cinelerra-5.1/cinelerra/ffmpeg.C

   1
   2 #include <stdio.h>
   3 #include <stdint.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6 #include <string.h>
   7 #include <stdarg.h>
   8 #include <fcntl.h>
   9 #include <limits.h>
  10 #include <ctype.h>
  11
  12 // work arounds (centos)
  13 #include <lzma.h>
  14 #ifndef INT64_MAX
  15 #define INT64_MAX 9223372036854775807LL
  16 #endif
  17 #define MAX_RETRY 1000
  18 // max pts/curr_pos drift allowed before correction (in seconds)
  19 #define AUDIO_PTS_TOLERANCE 0.04
  20
  21 #include "asset.h"
  22 #include "bccmodels.h"
  23 #include "bchash.h"
  24 #include "edl.h"
  25 #include "edlsession.h"
  26 #include "file.h"
  27 #include "fileffmpeg.h"
  28 #include "filesystem.h"
  29 #include "ffmpeg.h"
  30 #include "indexfile.h"
  31 #include "interlacemodes.h"
  32 #ifdef HAVE_DV
  33 #include "libdv.h"
  34 #endif
  35 #include "libmjpeg.h"
  36 #include "mainerror.h"
  37 #include "mwindow.h"
  38 #include "preferences.h"
  39 #include "vframe.h"
  40
  41 #ifdef FFMPEG3
  42 #define url filename
  43 #else
  44 #define av_register_all(s)
  45 #define avfilter_register_all(s)
  46 #endif
  47
  48 #define VIDEO_INBUF_SIZE 0x10000
  49 #define AUDIO_INBUF_SIZE 0x10000
  50 #define VIDEO_REFILL_THRESH 0
  51 #define AUDIO_REFILL_THRESH 0x1000
  52 #define AUDIO_MIN_FRAME_SZ 128
  53
  54 #define FF_ESTM_TIMES 0x0001
  55 #define FF_BAD_TIMES  0x0002
  56
  57 Mutex FFMPEG::fflock("FFMPEG::fflock");
  58
  59 static void ff_err(int ret, const char *fmt, ...)
  60 {
  61         char msg[BCTEXTLEN];
  62         va_list ap;
  63         va_start(ap, fmt);
  64         vsnprintf(msg, sizeof(msg), fmt, ap);
  65         va_end(ap);
  66         char errmsg[BCSTRLEN];
  67         av_strerror(ret, errmsg, sizeof(errmsg));
  68         fprintf(stderr,_("%s  err: %s\n"),msg, errmsg);
  69 }
  70
  71 void FFPacket::init()
  72 {
  73         av_init_packet(&pkt);
  74         pkt.data = 0; pkt.size = 0;
  75 }
  76 void FFPacket::finit()
  77 {
  78         av_packet_unref(&pkt);
  79 }
  80
  81 FFrame::FFrame(FFStream *fst)
  82 {
  83         this->fst = fst;
  84         frm = av_frame_alloc();
  85         init = fst->init_frame(frm);
  86 }
  87
  88 FFrame::~FFrame()
  89 {
  90         av_frame_free(&frm);
  91 }
  92
  93 void FFrame::queue(int64_t pos)
  94 {
  95         position = pos;
  96         fst->queue(this);
  97 }
  98
  99 void FFrame::dequeue()
 100 {
 101         fst->dequeue(this);
 102 }
 103
 104 void FFrame::set_hw_frame(AVFrame *frame)
 105 {
 106         av_frame_free(&frm);
 107         frm = frame;
 108 }
 109
 110 int FFAudioStream::read(float *fp, long len)
 111 {
 112         long n = len * nch;
 113         float *op = outp;
 114         while( n > 0 ) {
 115                 int k = lmt - op;
 116                 if( k > n ) k = n;
 117                 n -= k;
 118                 while( --k >= 0 ) *fp++ = *op++;
 119                 if( op >= lmt ) op = bfr;
 120         }
 121         return len;
 122 }
 123
 124 void FFAudioStream::realloc(long nsz, int nch, long len)
 125 {
 126         long bsz = nsz * nch;
 127         float *np = new float[bsz];
 128         inp = np + read(np, len) * nch;
 129         outp = np;
 130         lmt = np + bsz;
 131         this->nch = nch;
 132         sz = nsz;
 133         delete [] bfr;  bfr = np;
 134 }
 135
 136 void FFAudioStream::realloc(long nsz, int nch)
 137 {
 138         if( nsz > sz || this->nch != nch ) {
 139                 long len = this->nch != nch ? 0 : hpos;
 140                 if( len > sz ) len = sz;
 141                 iseek(len);
 142                 realloc(nsz, nch, len);
 143         }
 144 }
 145
 146 void FFAudioStream::reserve(long nsz, int nch)
 147 {
 148         long len = (inp - outp) / nch;
 149         nsz += len;
 150         if( nsz > sz || this->nch != nch ) {
 151                 if( this->nch != nch ) len = 0;
 152                 realloc(nsz, nch, len);
 153                 return;
 154         }
 155         if( (len*=nch) > 0 && bfr != outp )
 156                 memmove(bfr, outp, len*sizeof(*bfr));
 157         outp = bfr;
 158         inp = bfr + len;
 159 }
 160
 161 long FFAudioStream::used()
 162 {
 163         long len = inp>=outp ? inp-outp : inp-bfr + lmt-outp;
 164         return len / nch;
 165 }
 166 long FFAudioStream::avail()
 167 {
 168         float *in1 = inp+1;
 169         if( in1 >= lmt ) in1 = bfr;
 170         long len = outp >= in1 ? outp-in1 : outp-bfr + lmt-in1;
 171         return len / nch;
 172 }
 173 void FFAudioStream::reset_history()
 174 {
 175         inp = outp = bfr;
 176         hpos = 0;
 177         memset(bfr, 0, lmt-bfr);
 178 }
 179
 180 void FFAudioStream::iseek(int64_t ofs)
 181 {
 182         if( ofs > hpos ) ofs = hpos;
 183         if( ofs > sz ) ofs = sz;
 184         outp = inp - ofs*nch;
 185         if( outp < bfr ) outp += sz*nch;
 186 }
 187
 188 float *FFAudioStream::get_outp(int ofs)
 189 {
 190         float *ret = outp;
 191         outp += ofs*nch;
 192         return ret;
 193 }
 194
 195 int64_t FFAudioStream::put_inp(int ofs)
 196 {
 197         inp += ofs*nch;
 198         return (inp-outp) / nch;
 199 }
 200
 201 int FFAudioStream::write(const float *fp, long len)
 202 {
 203         long n = len * nch;
 204         float *ip = inp;
 205         while( n > 0 ) {
 206                 int k = lmt - ip;
 207                 if( k > n ) k = n;
 208                 n -= k;
 209                 while( --k >= 0 ) *ip++ = *fp++;
 210                 if( ip >= lmt ) ip = bfr;
 211         }
 212         inp = ip;
 213         hpos += len;
 214         return len;
 215 }
 216
 217 int FFAudioStream::zero(long len)
 218 {
 219         long n = len * nch;
 220         float *ip = inp;
 221         while( n > 0 ) {
 222                 int k = lmt - ip;
 223                 if( k > n ) k = n;
 224                 n -= k;
 225                 while( --k >= 0 ) *ip++ = 0;
 226                 if( ip >= lmt ) ip = bfr;
 227         }
 228         inp = ip;
 229         hpos += len;
 230         return len;
 231 }
 232
 233 // does not advance outp
 234 int FFAudioStream::read(double *dp, long len, int ch)
 235 {
 236         long n = len;
 237         float *op = outp + ch;
 238         float *lmt1 = lmt + nch-1;
 239         while( n > 0 ) {
 240                 int k = (lmt1 - op) / nch;
 241                 if( k > n ) k = n;
 242                 n -= k;
 243                 while( --k >= 0 ) { *dp++ = *op;  op += nch; }
 244                 if( op >= lmt ) op -= sz*nch;
 245         }
 246         return len;
 247 }
 248
 249 // load linear buffer, no wrapping allowed, does not advance inp
 250 int FFAudioStream::write(const double *dp, long len, int ch)
 251 {
 252         long n = len;
 253         float *ip = inp + ch;
 254         while( --n >= 0 ) { *ip = *dp++;  ip += nch; }
 255         return len;
 256 }
 257
 258
 259 FFStream::FFStream(FFMPEG *ffmpeg, AVStream *st, int fidx)
 260 {
 261         this->ffmpeg = ffmpeg;
 262         this->st = st;
 263         this->fidx = fidx;
 264         frm_lock = new Mutex("FFStream::frm_lock");
 265         fmt_ctx = 0;
 266         avctx = 0;
 267         filter_graph = 0;
 268         filt_ctx = 0;
 269         filt_id = 0;
 270         buffersrc_ctx = 0;
 271         buffersink_ctx = 0;
 272         frm_count = 0;
 273         nudge = AV_NOPTS_VALUE;
 274         seek_pos = curr_pos = 0;
 275         seeking = 0; seeked = 1;
 276         eof = 0;
 277         reading = writing = 0;
 278         hw_pixfmt = AV_PIX_FMT_NONE;
 279         hw_device_ctx = 0;
 280         flushed = 0;
 281         need_packet = 1;
 282         frame = fframe = 0;
 283         probe_frame = 0;
 284         bsfc = 0;
 285         stats_fp = 0;
 286         stats_filename = 0;
 287         stats_in = 0;
 288         pass = 0;
 289 }
 290
 291 FFStream::~FFStream()
 292 {
 293         frm_lock->lock("FFStream::~FFStream");
 294         if( reading > 0 || writing > 0 ) avcodec_close(avctx);
 295         if( avctx ) avcodec_free_context(&avctx);
 296         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
 297         if( hw_device_ctx ) av_buffer_unref(&hw_device_ctx);
 298         if( bsfc ) av_bsf_free(&bsfc);
 299         while( frms.first ) frms.remove(frms.first);
 300         if( filter_graph ) avfilter_graph_free(&filter_graph);
 301         if( frame ) av_frame_free(&frame);
 302         if( fframe ) av_frame_free(&fframe);
 303         if( probe_frame ) av_frame_free(&probe_frame);
 304         frm_lock->unlock();
 305         delete frm_lock;
 306         if( stats_fp ) fclose(stats_fp);
 307         if( stats_in ) av_freep(&stats_in);
 308         delete [] stats_filename;
 309 }
 310
 311 void FFStream::ff_lock(const char *cp)
 312 {
 313         FFMPEG::fflock.lock(cp);
 314 }
 315
 316 void FFStream::ff_unlock()
 317 {
 318         FFMPEG::fflock.unlock();
 319 }
 320
 321 void FFStream::queue(FFrame *frm)
 322 {
 323         frm_lock->lock("FFStream::queue");
 324         frms.append(frm);
 325         ++frm_count;
 326         frm_lock->unlock();
 327         ffmpeg->mux_lock->unlock();
 328 }
 329
 330 void FFStream::dequeue(FFrame *frm)
 331 {
 332         frm_lock->lock("FFStream::dequeue");
 333         --frm_count;
 334         frms.remove_pointer(frm);
 335         frm_lock->unlock();
 336 }
 337
 338 int FFStream::encode_activate()
 339 {
 340         if( writing < 0 )
 341                 writing = ffmpeg->encode_activate();
 342         return writing;
 343 }
 344
 345 // this is a global parameter that really should be in the context
 346 static AVPixelFormat hw_pix_fmt = AV_PIX_FMT_NONE; // protected by ff_lock
 347
 348 // goofy maneuver to attach a hw_format to an av_context
 349 #define GET_HW_PIXFMT(fn, fmt) \
 350 static AVPixelFormat get_hw_##fn(AVCodecContext *ctx, const enum AVPixelFormat *pix_fmts) { \
 351         return fmt; \
 352 }
 353 GET_HW_PIXFMT(vaapi, AV_PIX_FMT_VAAPI)
 354 GET_HW_PIXFMT(vdpau, AV_PIX_FMT_VDPAU)
 355 GET_HW_PIXFMT(cuda,  AV_PIX_FMT_CUDA)
 356 GET_HW_PIXFMT(nv12,  AV_PIX_FMT_NV12)
 357
 358 static enum AVPixelFormat get_hw_format(AVCodecContext *ctx,
 359                         const enum AVPixelFormat *pix_fmts)
 360 {
 361         for( const enum AVPixelFormat *p=pix_fmts; *p!=AV_PIX_FMT_NONE; ++p ) {
 362                 if( *p != hw_pix_fmt ) continue;
 363                 switch( *p ) {
 364                 case AV_PIX_FMT_VAAPI: ctx->get_format = get_hw_vaapi; return *p;
 365                 case AV_PIX_FMT_VDPAU: ctx->get_format = get_hw_vdpau; return *p;
 366                 case AV_PIX_FMT_CUDA:  ctx->get_format = get_hw_cuda;  return *p;
 367                 case AV_PIX_FMT_NV12:  ctx->get_format = get_hw_nv12;  return *p;
 368                 default:
 369                         fprintf(stderr, "Unknown HW surface format: %s\n",
 370                                 av_get_pix_fmt_name(*p));
 371                         continue;
 372                 }
 373         }
 374         fprintf(stderr, "Failed to get HW surface format.\n");
 375         return hw_pix_fmt = AV_PIX_FMT_NONE;
 376 }
 377
 378
 379 AVHWDeviceType FFStream::decode_hw_activate()
 380 {
 381         return AV_HWDEVICE_TYPE_NONE;
 382 }
 383 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
 384 int FFStream::decode_hw_format(const AVCodec *decoder, AVHWDeviceType type)
 385 #else
 386 int FFStream::decode_hw_format(AVCodec *decoder, AVHWDeviceType type)
 387 #endif
 388 {
 389         return 0;
 390 }
 391
 392 int FFStream::decode_activate()
 393 {
 394         if( reading < 0 && (reading=ffmpeg->decode_activate()) > 0 ) {
 395                 ff_lock("FFStream::decode_activate");
 396                 reading = 0;
 397                 AVDictionary *copts = 0;
 398                 av_dict_copy(&copts, ffmpeg->opts, 0);
 399                 int ret = 0;
 400                 AVHWDeviceType hw_type = decode_hw_activate();
 401
 402                 // this should be avformat_copy_context(), but no copy avail
 403                 ret = avformat_open_input(&fmt_ctx,
 404                         ffmpeg->fmt_ctx->url, ffmpeg->fmt_ctx->iformat, &copts);
 405                 if( ret >= 0 ) {
 406                         ret = avformat_find_stream_info(fmt_ctx, 0);
 407                         st = fmt_ctx->streams[fidx];
 408                         load_markers();
 409                 }
 410                 while( ret >= 0 && st != 0 && !reading ) {
 411                         AVCodecID codec_id = st->codecpar->codec_id;
 412 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
 413                         const AVCodec *decoder = 0;
 414 #else
 415                         AVCodec *decoder = 0;
 416 #endif
 417                         if( is_video() ) {
 418                                 if( ffmpeg->opt_video_decoder )
 419                                         decoder = avcodec_find_decoder_by_name(ffmpeg->opt_video_decoder);
 420                                 else
 421                                         ffmpeg->video_codec_remaps.update(codec_id, decoder);
 422                         }
 423                         else if( is_audio() ) {
 424                                 if( ffmpeg->opt_audio_decoder )
 425                                         decoder = avcodec_find_decoder_by_name(ffmpeg->opt_audio_decoder);
 426                                 else
 427                                         ffmpeg->audio_codec_remaps.update(codec_id, decoder);
 428                         }
 429                         if( !decoder )
 430                                 decoder = avcodec_find_decoder(codec_id);
 431                         avctx = avcodec_alloc_context3(decoder);
 432                         if( !avctx ) {
 433                                 eprintf(_("cant allocate codec context\n"));
 434                                 ret = AVERROR(ENOMEM);
 435                         }
 436                         if( ret >= 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 437                                 ret = decode_hw_format(decoder, hw_type);
 438                         }
 439                         if( ret >= 0 ) {
 440                                 avcodec_parameters_to_context(avctx, st->codecpar);
 441                                 if( !av_dict_get(copts, "threads", NULL, 0) )
 442                                         avctx->thread_count = ffmpeg->ff_cpus();
 443                                 ret = avcodec_open2(avctx, decoder, &copts);
 444                         }
 445                         AVFrame *hw_frame = 0;
 446                         if( ret >= 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 447                                 if( !(hw_frame=av_frame_alloc()) ) {
 448                                         fprintf(stderr, "FFStream::decode_activate: av_frame_alloc failed\n");
 449                                         ret = AVERROR(ENOMEM);
 450                                 }
 451                                 if( ret >= 0 )
 452                                         ret = decode(hw_frame);
 453                         }
 454                         if( ret < 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 455                                 ff_err(ret, "HW device init failed, using SW decode.\nfile:%s\n",
 456                                         ffmpeg->fmt_ctx->url);
 457                                 avcodec_close(avctx);
 458                                 avcodec_free_context(&avctx);
 459                                 av_buffer_unref(&hw_device_ctx);
 460                                 hw_device_ctx = 0;
 461                                 av_frame_free(&hw_frame);
 462                                 hw_type = AV_HWDEVICE_TYPE_NONE;
 463                                 int flags = AVSEEK_FLAG_BACKWARD | AVSEEK_FLAG_ANY;
 464                                 int idx = st->index;
 465                                 av_seek_frame(fmt_ctx, idx, 0, flags);
 466                                 need_packet = 1;  flushed = 0;
 467                                 seeked = 1;  st_eof(0);
 468                                 ret = 0;
 469                                 continue;
 470                         }
 471                         probe_frame = hw_frame;
 472                         if( ret >= 0 )
 473                                 reading = 1;
 474                         else
 475                                 eprintf(_("open decoder failed\n"));
 476                 }
 477                 if( ret < 0 )
 478                         eprintf(_("can't open input file: %s\n"), ffmpeg->fmt_ctx->url);
 479                 av_dict_free(&copts);
 480                 ff_unlock();
 481         }
 482         return reading;
 483 }
 484
 485 int FFStream::read_packet()
 486 {
 487         av_packet_unref(ipkt);
 488         int ret = av_read_frame(fmt_ctx, ipkt);
 489         if( ret < 0 ) {
 490                 st_eof(1);
 491                 if( ret == AVERROR_EOF ) return 0;
 492                 ff_err(ret, "FFStream::read_packet: av_read_frame failed\n");
 493                 flushed = 1;
 494                 return -1;
 495         }
 496         return 1;
 497 }
 498
 499 int FFStream::decode(AVFrame *frame)
 500 {
 501         if( probe_frame ) { // hw probe reads first frame
 502                 av_frame_ref(frame, probe_frame);
 503                 av_frame_free(&probe_frame);
 504                 return 1;
 505         }
 506         int ret = 0;
 507         int retries = MAX_RETRY;
 508         frm_lock->lock("FFStream::decode");
 509         while( ret >= 0 && !flushed && --retries >= 0 ) {
 510                 if( need_packet ) {
 511                         if( (ret=read_packet()) < 0 ) break;
 512                         AVPacket *pkt = ret > 0 ? (AVPacket*)ipkt : 0;
 513                         if( pkt ) {
 514                                 if( pkt->stream_index != st->index ) continue;
 515                                 if( !pkt->data || !pkt->size ) continue;
 516                         }
 517                         if( (ret=avcodec_send_packet(avctx, pkt)) < 0 ) {
 518                                 ff_err(ret, "FFStream::decode: avcodec_send_packet failed.\nfile:%s\n",
 519                                                 ffmpeg->fmt_ctx->url);
 520                                 break;
 521                         }
 522                         need_packet = 0;
 523                         retries = MAX_RETRY;
 524                 }
 525                 if( (ret=decode_frame(frame)) > 0 ) break;
 526                 if( !ret ) {
 527                         need_packet = 1;
 528                         flushed = st_eof();
 529                 }
 530         }
 531         frm_lock->unlock();
 532
 533         if( retries < 0 ) {
 534                 fprintf(stderr, "FFStream::decode: Retry limit\n");
 535                 ret = 0;
 536         }
 537         if( ret < 0 )
 538                 fprintf(stderr, "FFStream::decode: failed\n");
 539         return ret;
 540 }
 541
 542 int FFStream::load_filter(AVFrame *frame)
 543 {
 544         int ret = av_buffersrc_add_frame_flags(buffersrc_ctx, frame, 0);
 545         if( ret < 0 )
 546                 eprintf(_("av_buffersrc_add_frame_flags failed\n"));
 547         return ret;
 548 }
 549
 550 int FFStream::read_filter(AVFrame *frame)
 551 {
 552         int ret = av_buffersink_get_frame(buffersink_ctx, frame);
 553         if( ret < 0 ) {
 554                 if( ret == AVERROR(EAGAIN) ) return 0;
 555                 if( ret == AVERROR_EOF ) { st_eof(1); return -1; }
 556                 ff_err(ret, "FFStream::read_filter: av_buffersink_get_frame failed\n");
 557                 return ret;
 558         }
 559         return 1;
 560 }
 561
 562 int FFStream::read_frame(AVFrame *frame)
 563 {
 564         av_frame_unref(frame);
 565         if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
 566                 return decode(frame);
 567         if( !fframe && !(fframe=av_frame_alloc()) ) {
 568                 fprintf(stderr, "FFStream::read_frame: av_frame_alloc failed\n");
 569                 return -1;
 570         }
 571         int ret = -1;
 572         while( !flushed && !(ret=read_filter(frame)) ) {
 573                 if( (ret=decode(fframe)) < 0 ) break;
 574                 if( ret > 0 && (ret=load_filter(fframe)) < 0 ) break;
 575         }
 576         return ret;
 577 }
 578
 579 int FFStream::write_packet(FFPacket &pkt)
 580 {
 581         int ret = 0;
 582         if( !bsfc ) {
 583                 av_packet_rescale_ts(pkt, avctx->time_base, st->time_base);
 584                 pkt->stream_index = st->index;
 585                 ret = av_interleaved_write_frame(ffmpeg->fmt_ctx, pkt);
 586         }
 587         else {
 588         bsfc->time_base_in = st->time_base;
 589         avcodec_parameters_copy(bsfc->par_in, st->codecpar);
 590         av_bsf_init(bsfc);
 591
 592                 ret = av_bsf_send_packet(bsfc, pkt);
 593                 while( ret >= 0 ) {
 594                         FFPacket bs;
 595                         if( (ret=av_bsf_receive_packet(bsfc, bs)) < 0 ) {
 596                                 if( ret == AVERROR(EAGAIN) ) return 0;
 597                                 if( ret == AVERROR_EOF ) return -1;
 598                                 break;
 599                         }
 600                         //printf(" filter name %s \n", bsfc->filter[0].name);
 601                         //avcodec_parameters_copy(ffmpeg->fmt_ctx->streams[0]->codecpar, bsfc->par_out);
 602                         //avcodec_parameters_copy(st->codecpar, bsfc->par_out);
 603                         av_packet_rescale_ts(bs, avctx->time_base, st->time_base);
 604                         bs->stream_index = st->index;
 605                         ret = av_interleaved_write_frame(ffmpeg->fmt_ctx, bs);
 606                 }
 607         }
 608         if( ret < 0 )
 609                 ff_err(ret, "FFStream::write_packet: write packet failed.\nfile:%s\n",
 610                                 ffmpeg->fmt_ctx->url);
 611         return ret;
 612 }
 613
 614 int FFStream::encode_frame(AVFrame *frame)
 615 {
 616         int pkts = 0, ret = 0;
 617         for( int retry=MAX_RETRY; --retry>=0; ) {
 618                 if( frame || !pkts )
 619                         ret = avcodec_send_frame(avctx, frame);
 620                 if( !ret && frame ) return pkts;
 621                 if( ret < 0 && ret != AVERROR(EAGAIN) ) break;
 622                 if ( ret == AVERROR(EAGAIN) && !frame ) continue;
 623                 FFPacket opkt;
 624                 ret = avcodec_receive_packet(avctx, opkt);
 625                 if( !frame && ret == AVERROR_EOF ) return pkts;
 626                 if( ret < 0 ) break;
 627                 ret = write_packet(opkt);
 628                 if( ret < 0 ) break;
 629                 ++pkts;
 630                 if( frame && stats_fp ) {
 631                         ret = write_stats_file();
 632                         if( ret < 0 ) break;
 633                 }
 634         }
 635         ff_err(ret, "FFStream::encode_frame: encode failed.\nfile: %s\n",
 636                                 ffmpeg->fmt_ctx->url);
 637         return -1;
 638 }
 639
 640 int FFStream::flush()
 641 {
 642         if( writing < 0 )
 643                 return -1;
 644         int ret = encode_frame(0);
 645         if( ret >= 0 && stats_fp ) {
 646                 ret = write_stats_file();
 647                 close_stats_file();
 648         }
 649         if( ret < 0 )
 650                 ff_err(ret, "FFStream::flush failed\n:file:%s\n",
 651                                 ffmpeg->fmt_ctx->url);
 652         return ret >= 0 ? 0 : 1;
 653 }
 654
 655
 656 int FFStream::open_stats_file()
 657 {
 658         stats_fp = fopen(stats_filename,"w");
 659         return stats_fp ? 0 : AVERROR(errno);
 660 }
 661
 662 int FFStream::close_stats_file()
 663 {
 664         if( stats_fp ) {
 665                 fclose(stats_fp);  stats_fp = 0;
 666         }
 667         return 0;
 668 }
 669
 670 int FFStream::read_stats_file()
 671 {
 672         int64_t len = 0;  struct stat stats_st;
 673         int fd = open(stats_filename, O_RDONLY);
 674         int ret = fd >= 0 ? 0: ENOENT;
 675         if( !ret && fstat(fd, &stats_st) )
 676                 ret = EINVAL;
 677         if( !ret ) {
 678                 len = stats_st.st_size;
 679                 stats_in = (char *)av_malloc(len+1);
 680                 if( !stats_in )
 681                         ret = ENOMEM;
 682         }
 683         if( !ret && read(fd, stats_in, len+1) != len )
 684                 ret = EIO;
 685         if( !ret ) {
 686                 stats_in[len] = 0;
 687                 avctx->stats_in = stats_in;
 688         }
 689         if( fd >= 0 )
 690                 close(fd);
 691         return !ret ? 0 : AVERROR(ret);
 692 }
 693
 694 int FFStream::write_stats_file()
 695 {
 696         int ret = 0;
 697         if( avctx->stats_out && (ret=strlen(avctx->stats_out)) > 0 ) {
 698                 int len = fwrite(avctx->stats_out, 1, ret, stats_fp);
 699                 if( ret != len )
 700                         ff_err(ret = AVERROR(errno), "FFStream::write_stats_file.\n%file:%s\n",
 701                                 ffmpeg->fmt_ctx->url);
 702         }
 703         return ret;
 704 }
 705
 706 int FFStream::init_stats_file()
 707 {
 708         int ret = 0;
 709         if( (pass & 2) && (ret = read_stats_file()) < 0 )
 710                 ff_err(ret, "stat file read: %s", stats_filename);
 711         if( (pass & 1) && (ret=open_stats_file()) < 0 )
 712                 ff_err(ret, "stat file open: %s", stats_filename);
 713         return ret >= 0 ? 0 : ret;
 714 }
 715
 716 int FFStream::seek(int64_t no, double rate)
 717 {
 718 // default ffmpeg native seek
 719         int npkts = 1;
 720         int64_t pos = no, pkt_pos = -1;
 721         IndexMarks *index_markers = get_markers();
 722         if( index_markers && index_markers->size() > 1 ) {
 723                 IndexMarks &marks = *index_markers;
 724                 int i = marks.find(pos);
 725                 int64_t n = i < 0 ? (i=0) : marks[i].no;
 726 // if indexed seek point not too far away (<30 secs), use index
 727                 if( no-n < 30*rate ) {
 728                         if( n < 0 ) n = 0;
 729                         pos = n;
 730                         if( i < marks.size() ) pkt_pos = marks[i].pos;
 731                         npkts = MAX_RETRY;
 732                 }
 733         }
 734         if( pos == curr_pos ) return 0;
 735         seeking = -1;
 736         double secs = pos < 0 ? 0. : pos / rate;
 737         AVRational time_base = st->time_base;
 738         int64_t tstmp = time_base.num > 0 ? secs * time_base.den/time_base.num : 0;
 739 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
 740         int nb_index_entries = avformat_index_get_entries_count(st);
 741 #endif
 742         if( !tstmp ) {
 743 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
 744                 if( nb_index_entries > 0 ) tstmp = (avformat_index_get_entry(st, 0))->timestamp;
 745 #else
 746                 if( st->nb_index_entries > 0 ) tstmp = st->index_entries[0].timestamp;
 747 #endif
 748                 else if( st->start_time != AV_NOPTS_VALUE ) tstmp = st->start_time;
 749 #if LIBAVCODEC_VERSION_INT  <= AV_VERSION_INT(58,134,100)
 750                 else if( st->first_dts != AV_NOPTS_VALUE ) tstmp = st->first_dts;
 751 #endif
 752                 else tstmp = INT64_MIN+1;
 753         }
 754         else if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 755         int idx = st->index;
 756 #if 0
 757 // seek all streams using the default timebase.
 758 //   this is how ffmpeg and ffplay work.  stream seeks are less tested.
 759         tstmp = av_rescale_q(tstmp, time_base, AV_TIME_BASE_Q);
 760         idx = -1;
 761 #endif
 762         frm_lock->lock("FFStream::seek");
 763         av_frame_free(&probe_frame);
 764         avcodec_flush_buffers(avctx);
 765         avformat_flush(fmt_ctx);
 766 #if 0
 767         int64_t seek = tstmp;
 768         int flags = AVSEEK_FLAG_ANY;
 769         if( !(fmt_ctx->iformat->flags & AVFMT_NO_BYTE_SEEK) && pkt_pos >= 0 ) {
 770                 seek = pkt_pos;
 771                 flags = AVSEEK_FLAG_BYTE;
 772         }
 773         int ret = avformat_seek_file(fmt_ctx, st->index, -INT64_MAX, seek, INT64_MAX, flags);
 774 #else
 775 // finds the first index frame below the target time
 776         int flags = AVSEEK_FLAG_BACKWARD | AVSEEK_FLAG_ANY;
 777         int ret = av_seek_frame(fmt_ctx, idx, tstmp, flags);
 778 #endif
 779         int retry = MAX_RETRY;
 780         while( ret >= 0 ) {
 781                 need_packet = 0;  flushed = 0;
 782                 seeked = 1;  st_eof(0);
 783 // read up to retry packets, limited to npkts in stream, and not pkt.pos past pkt_pos
 784                 while( --retry >= 0 ) {
 785                         if( read_packet() <= 0 ) { ret = -1;  break; }
 786                         if( ipkt->stream_index != st->index ) continue;
 787                         if( !ipkt->data || !ipkt->size ) continue;
 788                         if( pkt_pos >= 0 && ipkt->pos >= pkt_pos ) break;
 789                         if( --npkts <= 0 ) break;
 790                         int64_t pkt_ts = ipkt->dts != AV_NOPTS_VALUE ? ipkt->dts : ipkt->pts;
 791                         if( pkt_ts == AV_NOPTS_VALUE ) continue;
 792                         if( pkt_ts >= tstmp ) break;
 793                 }
 794                 if( retry < 0 ) {
 795                         ff_err(AVERROR(EIO), "FFStream::seek: %s\n"
 796                                 " retry limit, pos=%jd tstmp=%jd, ",
 797                                 ffmpeg->fmt_ctx->url, pos, tstmp);
 798                         ret = -1;
 799                 }
 800                 if( ret < 0 ) break;
 801                 ret = avcodec_send_packet(avctx, ipkt);
 802                 if( !ret ) break;
 803 //some codecs need more than one pkt to resync
 804                 if( ret == AVERROR_INVALIDDATA ) ret = 0;
 805                 if( ret < 0 ) {
 806                         ff_err(ret, "FFStream::avcodec_send_packet failed.\nseek:%s\n",
 807                                 ffmpeg->fmt_ctx->url);
 808                         break;
 809                 }
 810         }
 811         frm_lock->unlock();
 812         if( ret < 0 ) {
 813 printf("** seek fail %jd, %jd\n", pos, tstmp);
 814                 seeked = need_packet = 0;
 815                 st_eof(flushed=1);
 816                 return -1;
 817         }
 818 //printf("seeked pos = %ld, %ld\n", pos, tstmp);
 819         seek_pos = curr_pos = pos;
 820         return 0;
 821 }
 822
 823 FFAudioStream::FFAudioStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 824  : FFStream(ffmpeg, strm, fidx)
 825 {
 826         this->idx = idx;
 827         channel0 = channels = 0;
 828         sample_rate = 0;
 829         mbsz = 0;
 830         frame_sz = AUDIO_MIN_FRAME_SZ;
 831         length = 0;
 832         resample_context = 0;
 833         swr_ichs = swr_ifmt = swr_irate = 0;
 834
 835         aud_bfr_sz = 0;
 836         aud_bfr = 0;
 837
 838 // history buffer
 839         nch = 2;
 840         sz = 0x10000;
 841         long bsz = sz * nch;
 842         bfr = new float[bsz];
 843         lmt = bfr + bsz;
 844         reset_history();
 845 }
 846
 847 FFAudioStream::~FFAudioStream()
 848 {
 849         if( resample_context ) swr_free(&resample_context);
 850         delete [] aud_bfr;
 851         delete [] bfr;
 852 }
 853
 854 void FFAudioStream::init_swr(int ichs, int ifmt, int irate)
 855 {
 856         if( resample_context ) {
 857                 if( swr_ichs == ichs && swr_ifmt == ifmt && swr_irate == irate )
 858                         return;
 859                 swr_free(&resample_context);
 860         }
 861         swr_ichs = ichs;  swr_ifmt = ifmt;  swr_irate = irate;
 862         if( ichs == channels && ifmt == AV_SAMPLE_FMT_FLT && irate == sample_rate )
 863                 return;
 864         uint64_t ilayout = av_get_default_channel_layout(ichs);
 865         if( !ilayout ) ilayout = ((uint64_t)1<<ichs) - 1;
 866         uint64_t olayout = av_get_default_channel_layout(channels);
 867         if( !olayout ) olayout = ((uint64_t)1<<channels) - 1;
 868         resample_context = swr_alloc_set_opts(NULL,
 869                 olayout, AV_SAMPLE_FMT_FLT, sample_rate,
 870                 ilayout, (AVSampleFormat)ifmt, irate,
 871                 0, NULL);
 872         if( resample_context )
 873                 swr_init(resample_context);
 874 }
 875
 876 int FFAudioStream::get_samples(float *&samples, uint8_t **data, int len)
 877 {
 878         samples = *(float **)data;
 879         if( resample_context ) {
 880                 if( len > aud_bfr_sz ) {
 881                         delete [] aud_bfr;
 882                         aud_bfr = 0;
 883                 }
 884                 if( !aud_bfr ) {
 885                         aud_bfr_sz = len;
 886                         aud_bfr = new float[aud_bfr_sz*channels];
 887                 }
 888                 int ret = swr_convert(resample_context,
 889                         (uint8_t**)&aud_bfr, aud_bfr_sz, (const uint8_t**)data, len);
 890                 if( ret < 0 ) {
 891                         ff_err(ret, "FFAudioStream::get_samples: swr_convert failed\n");
 892                         return -1;
 893                 }
 894                 samples = aud_bfr;
 895                 len = ret;
 896         }
 897         return len;
 898 }
 899
 900 int FFAudioStream::load_history(uint8_t **data, int len)
 901 {
 902         float *samples;
 903         len = get_samples(samples, data, len);
 904         if( len > 0 ) {
 905                 // biggest user bfr since seek + frame
 906                 realloc(mbsz + len + 1, channels);
 907                 write(samples, len);
 908         }
 909         return len;
 910 }
 911
 912 int FFAudioStream::decode_frame(AVFrame *frame)
 913 {
 914         int first_frame = seeked;  seeked = 0;
 915         frame->best_effort_timestamp = AV_NOPTS_VALUE;
 916         int ret = avcodec_receive_frame(avctx, frame);
 917         if( ret < 0 ) {
 918                 if( first_frame ) return 0;
 919                 if( ret == AVERROR(EAGAIN) ) return 0;
 920                 if( ret == AVERROR_EOF ) { st_eof(1); return 0; }
 921                 ff_err(ret, "FFAudioStream::decode_frame: Could not read audio frame.\nfile:%s\n",
 922                                 ffmpeg->fmt_ctx->url);
 923                 return -1;
 924         }
 925         int64_t pkt_ts = frame->best_effort_timestamp;
 926         if( pkt_ts != AV_NOPTS_VALUE ) {
 927                 double ts = ffmpeg->to_secs(pkt_ts - nudge, st->time_base);
 928                 double t = (double)curr_pos / sample_rate;
 929 // some time_base clocks are very grainy, too grainy for audio (clicks, pops)
 930                 if( fabs(ts - t) > AUDIO_PTS_TOLERANCE )
 931                         curr_pos = ts * sample_rate + 0.5;
 932         }
 933         return 1;
 934 }
 935
 936 int FFAudioStream::encode_activate()
 937 {
 938         if( writing >= 0 ) return writing;
 939         if( !avctx->codec ) return writing = 0;
 940         frame_sz = avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE ?
 941                 10000 : avctx->frame_size;
 942         return FFStream::encode_activate();
 943 }
 944
 945 int64_t FFAudioStream::load_buffer(double ** const sp, int len)
 946 {
 947         reserve(len+1, st->codecpar->channels);
 948         for( int ch=0; ch<nch; ++ch )
 949                 write(sp[ch], len, ch);
 950         return put_inp(len);
 951 }
 952
 953 int FFAudioStream::in_history(int64_t pos)
 954 {
 955         if( pos > curr_pos ) return 0;
 956         int64_t len = hpos;
 957         if( len > sz ) len = sz;
 958         if( pos < curr_pos - len ) return 0;
 959         return 1;
 960 }
 961
 962
 963 int FFAudioStream::init_frame(AVFrame *frame)
 964 {
 965         frame->nb_samples = frame_sz;
 966         frame->format = avctx->sample_fmt;
 967         frame->channel_layout = avctx->channel_layout;
 968         frame->sample_rate = avctx->sample_rate;
 969         int ret = av_frame_get_buffer(frame, 0);
 970         if (ret < 0)
 971                 ff_err(ret, "FFAudioStream::init_frame: av_frame_get_buffer failed\n");
 972         return ret;
 973 }
 974
 975 int FFAudioStream::load(int64_t pos, int len)
 976 {
 977         if( audio_seek(pos) < 0 ) return -1;
 978         if( !frame && !(frame=av_frame_alloc()) ) {
 979                 fprintf(stderr, "FFAudioStream::load: av_frame_alloc failed\n");
 980                 return -1;
 981         }
 982         if( mbsz < len ) mbsz = len;
 983         int64_t end_pos = pos + len;
 984         int ret = 0, i = len / frame_sz + MAX_RETRY;
 985         while( ret>=0 && !flushed && curr_pos<end_pos && --i>=0 ) {
 986                 ret = read_frame(frame);
 987                 if( ret > 0 && frame->nb_samples > 0 ) {
 988                         init_swr(frame->channels, frame->format, frame->sample_rate);
 989                         load_history(&frame->extended_data[0], frame->nb_samples);
 990                         curr_pos += frame->nb_samples;
 991                 }
 992         }
 993         if( end_pos > curr_pos ) {
 994                 zero(end_pos - curr_pos);
 995                 curr_pos = end_pos;
 996         }
 997         len = curr_pos - pos;
 998         iseek(len);
 999         return len;
1000 }
1001
1002 int FFAudioStream::audio_seek(int64_t pos)
1003 {
1004         if( decode_activate() <= 0 ) return -1;
1005         if( !st->codecpar ) return -1;
1006         if( in_history(pos) ) return 0;
1007         if( pos == curr_pos ) return 0;
1008         reset_history();  mbsz = 0;
1009 // guarentee preload > 1sec samples
1010         if( (pos-=sample_rate) < 0 ) pos = 0;
1011         if( seek(pos, sample_rate) < 0 ) return -1;
1012         return 1;
1013 }
1014
1015 int FFAudioStream::encode(double **samples, int len)
1016 {
1017         if( encode_activate() <= 0 ) return -1;
1018         ffmpeg->flow_ctl();
1019         int ret = 0;
1020         int64_t count = samples ? load_buffer(samples, len) : used();
1021         int frame_sz1 = samples ? frame_sz-1 : 0;
1022         FFrame *frm = 0;
1023
1024         while( ret >= 0 && count > frame_sz1 ) {
1025                 frm = new FFrame(this);
1026                 if( (ret=frm->initted()) < 0 ) break;
1027                 AVFrame *frame = *frm;
1028                 len = count >= frame_sz ? frame_sz : count;
1029                 float *bfrp = get_outp(len);
1030                 ret =  swr_convert(resample_context,
1031                         (uint8_t **)frame->extended_data, len,
1032                         (const uint8_t **)&bfrp, len);
1033                 if( ret < 0 ) {
1034                         ff_err(ret, "FFAudioStream::encode: swr_convert failed\n");
1035                         break;
1036                 }
1037                 frame->nb_samples = len;
1038                 frm->queue(curr_pos);
1039                 frm = 0;
1040                 curr_pos += len;
1041                 count -= len;
1042         }
1043
1044         delete frm;
1045         return ret >= 0 ? 0 : 1;
1046 }
1047
1048 int FFAudioStream::drain()
1049 {
1050         return encode(0,0);
1051 }
1052
1053 int FFAudioStream::encode_frame(AVFrame *frame)
1054 {
1055         return FFStream::encode_frame(frame);
1056 }
1057
1058 int FFAudioStream::write_packet(FFPacket &pkt)
1059 {
1060         return FFStream::write_packet(pkt);
1061 }
1062
1063 void FFAudioStream::load_markers()
1064 {
1065         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1066         if( !index_state || idx >= index_state->audio_markers.size() ) return;
1067         if( index_state->marker_status == MARKERS_NOTTESTED ) return;
1068         FFStream::load_markers(*index_state->audio_markers[idx], sample_rate);
1069 }
1070
1071 IndexMarks *FFAudioStream::get_markers()
1072 {
1073         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1074         if( !index_state || idx >= index_state->audio_markers.size() ) return 0;
1075         return index_state->audio_markers[idx];
1076 }
1077
1078 FFVideoStream::FFVideoStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
1079  : FFStream(ffmpeg, strm, fidx),
1080    FFVideoConvert(ffmpeg->ff_prefs())
1081 {
1082         this->idx = idx;
1083         width = height = 0;
1084         transpose = 0;
1085         frame_rate = 0;
1086         aspect_ratio = 0;
1087         length = 0;
1088         interlaced = 0;
1089         top_field_first = 0;
1090         color_space = -1;
1091         color_range = -1;
1092         fconvert_ctx = 0;
1093 }
1094
1095 FFVideoStream::~FFVideoStream()
1096 {
1097         if( fconvert_ctx ) sws_freeContext(fconvert_ctx);
1098 }
1099
1100 AVHWDeviceType FFVideoStream::decode_hw_activate()
1101 {
1102         AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
1103         const char *hw_dev = ffmpeg->opt_hw_dev;
1104         if( !hw_dev ) hw_dev = getenv("CIN_HW_DEV");
1105         if( !hw_dev ) hw_dev = ffmpeg->ff_hw_dev();
1106         if( hw_dev && *hw_dev &&
1107             strcmp("none", hw_dev) && strcmp(_("none"), hw_dev) ) {
1108                 type = av_hwdevice_find_type_by_name(hw_dev);
1109                 if( type == AV_HWDEVICE_TYPE_NONE ) {
1110                         fprintf(stderr, "Device type %s is not supported.\n", hw_dev);
1111                         fprintf(stderr, "Available device types:");
1112                         while( (type = av_hwdevice_iterate_types(type)) != AV_HWDEVICE_TYPE_NONE )
1113                                 fprintf(stderr, " %s", av_hwdevice_get_type_name(type));
1114                         fprintf(stderr, "\n");
1115                 }
1116         }
1117         return type;
1118 }
1119 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
1120 int FFVideoStream::decode_hw_format(const AVCodec *decoder, AVHWDeviceType type)
1121 #else
1122 int FFVideoStream::decode_hw_format(AVCodec *decoder, AVHWDeviceType type)
1123 #endif
1124 {
1125         int ret = 0;
1126         hw_pix_fmt = AV_PIX_FMT_NONE;
1127         for( int i=0; ; ++i ) {
1128                 const AVCodecHWConfig *config = avcodec_get_hw_config(decoder, i);
1129                 if( !config ) {
1130                         fprintf(stderr, "Decoder %s does not support device type %s.\n",
1131                                 decoder->name, av_hwdevice_get_type_name(type));
1132                         ret = -1;
1133                         break;
1134                 }
1135                 if( (config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX) != 0 &&
1136                     config->device_type == type ) {
1137                         hw_pix_fmt = config->pix_fmt;
1138                         break;
1139                 }
1140         }
1141         if( hw_pix_fmt >= 0 ) {
1142                 hw_pixfmt = hw_pix_fmt;
1143                 avctx->get_format  = get_hw_format;
1144                 ret = av_hwdevice_ctx_create(&hw_device_ctx, type, 0, 0, 0);
1145                 if( ret >= 0 ) {
1146                         avctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
1147                         ret = 1;
1148                 }
1149                 else {
1150                         ff_err(ret, "Failed HW device create.\ndev:%s\n",
1151                                 av_hwdevice_get_type_name(type));
1152                         ret = -1;
1153                 }
1154         }
1155         return ret;
1156 }
1157
1158 AVHWDeviceType FFVideoStream::encode_hw_activate(const char *hw_dev)
1159 {
1160         AVBufferRef *hw_device_ctx = 0;
1161         AVBufferRef *hw_frames_ref = 0;
1162         AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
1163         if( strcmp(_("none"), hw_dev) ) {
1164                 type = av_hwdevice_find_type_by_name(hw_dev);
1165                 if( type != AV_HWDEVICE_TYPE_VAAPI ) {
1166                         fprintf(stderr, "currently, only vaapi hw encode is supported\n");
1167                         type = AV_HWDEVICE_TYPE_NONE;
1168                 }
1169         }
1170         if( type != AV_HWDEVICE_TYPE_NONE ) {
1171                 int ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, 0, 0, 0);
1172                 if( ret < 0 ) {
1173                         ff_err(ret, "Failed to create a HW device.\n");
1174                         type = AV_HWDEVICE_TYPE_NONE;
1175                 }
1176         }
1177         if( type != AV_HWDEVICE_TYPE_NONE ) {
1178                 hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx);
1179                 if( !hw_frames_ref ) {
1180                         fprintf(stderr, "Failed to create HW frame context.\n");
1181                         type = AV_HWDEVICE_TYPE_NONE;
1182                 }
1183         }
1184         if( type != AV_HWDEVICE_TYPE_NONE ) {
1185                 AVHWFramesContext *frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);
1186                 frames_ctx->format = AV_PIX_FMT_VAAPI;
1187                 frames_ctx->sw_format = AV_PIX_FMT_NV12;
1188                 frames_ctx->width = width;
1189                 frames_ctx->height = height;
1190                 frames_ctx->initial_pool_size = 0; // 200;
1191                 int ret = av_hwframe_ctx_init(hw_frames_ref);
1192                 if( ret >= 0 ) {
1193                         avctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);
1194                         if( !avctx->hw_frames_ctx ) ret = AVERROR(ENOMEM);
1195                 }
1196                 if( ret < 0 ) {
1197                         ff_err(ret, "Failed to initialize HW frame context.\n");
1198                         type = AV_HWDEVICE_TYPE_NONE;
1199                 }
1200                 av_buffer_unref(&hw_frames_ref);
1201         }
1202         return type;
1203 }
1204
1205 int FFVideoStream::encode_hw_write(FFrame *picture)
1206 {
1207         int ret = 0;
1208         AVFrame *hw_frm = 0;
1209         switch( avctx->pix_fmt ) {
1210         case AV_PIX_FMT_VAAPI:
1211                 hw_frm = av_frame_alloc();
1212                 if( !hw_frm ) { ret = AVERROR(ENOMEM);  break; }
1213                 ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, hw_frm, 0);
1214                 if( ret < 0 ) break;
1215                 ret = av_hwframe_transfer_data(hw_frm, *picture, 0);
1216                 if( ret < 0 ) break;
1217                 picture->set_hw_frame(hw_frm);
1218                 return 0;
1219         default:
1220                 return 0;
1221         }
1222         av_frame_free(&hw_frm);
1223         ff_err(ret, "Error while transferring frame data to GPU.\n");
1224         return ret;
1225 }
1226
1227 int FFVideoStream::decode_frame(AVFrame *frame)
1228 {
1229         int first_frame = seeked;  seeked = 0;
1230         int ret = avcodec_receive_frame(avctx, frame);
1231         if( ret < 0 ) {
1232                 if( first_frame ) return 0;
1233                 if( ret == AVERROR(EAGAIN) ) return 0;
1234                 if( ret == AVERROR_EOF ) { st_eof(1); return 0; }
1235                 ff_err(ret, "FFVideoStream::decode_frame: Could not read video frame.\nfile:%s\n,",
1236                                 ffmpeg->fmt_ctx->url);
1237                 return -1;
1238         }
1239         int64_t pkt_ts = frame->best_effort_timestamp;
1240         if( pkt_ts != AV_NOPTS_VALUE )
1241                 curr_pos = ffmpeg->to_secs(pkt_ts - nudge, st->time_base) * frame_rate + 0.5;
1242         return 1;
1243 }
1244
1245 int FFVideoStream::probe(int64_t pos)
1246 {
1247         int ret = video_seek(pos);
1248         if( ret < 0 ) return -1;
1249         if( !frame && !(frame=av_frame_alloc()) ) {
1250                 fprintf(stderr, "FFVideoStream::probe: av_frame_alloc failed\n");
1251                 return -1;
1252         }
1253
1254         if (ffmpeg->interlace_from_codec) return 1;
1255
1256                 ret = read_frame(frame);
1257                 if( ret > 0 ) {
1258                         //printf("codec interlace: %i \n",frame->interlaced_frame);
1259                         //printf("codec tff: %i \n",frame->top_field_first);
1260
1261                         if (!frame->interlaced_frame)
1262                                 ffmpeg->interlace_from_codec = AV_FIELD_PROGRESSIVE;
1263                         if ((frame->interlaced_frame) && (frame->top_field_first))
1264                                 ffmpeg->interlace_from_codec = AV_FIELD_TT;
1265                         if ((frame->interlaced_frame) && (!frame->top_field_first))
1266                                 ffmpeg->interlace_from_codec = AV_FIELD_BB;
1267                         //printf("Interlace mode from codec: %i\n", ffmpeg->interlace_from_codec);
1268
1269         }
1270
1271         if( frame->format == AV_PIX_FMT_NONE || frame->width <= 0 || frame->height <= 0 )
1272                 ret = -1;
1273
1274         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
1275         av_frame_free(&frame);
1276         return ret;
1277 }
1278
1279 int FFVideoStream::load(VFrame *vframe, int64_t pos)
1280 {
1281         int ret = video_seek(pos);
1282         if( ret < 0 ) return -1;
1283         if( !frame && !(frame=av_frame_alloc()) ) {
1284                 fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
1285                 return -1;
1286         }
1287
1288
1289         int i = MAX_RETRY + pos - curr_pos;
1290         int64_t cache_start = 0;
1291         while( ret>=0 && !flushed && curr_pos<=pos && --i>=0 ) {
1292                 ret = read_frame(frame);
1293                 if( ret > 0 ) {
1294                         if( frame->key_frame && seeking < 0 ) {
1295                                 int use_cache = ffmpeg->get_use_cache();
1296                                 if( use_cache < 0 ) {
1297 // for reverse read, reload file frame_cache from keyframe to pos
1298                                         ffmpeg->purge_cache();
1299                                         int count = preferences->cache_size /
1300                                                 vframe->get_data_size() / 2;  // try to burn only 1/2 of cache
1301                                         cache_start = pos - count + 1;
1302                                         seeking = 1;
1303                                 }
1304                                 else
1305                                         seeking = 0;
1306                         }
1307                         if( seeking > 0 && curr_pos >= cache_start && curr_pos < pos ) {
1308                                 int vw =vframe->get_w(), vh = vframe->get_h();
1309                                 int vcolor_model = vframe->get_color_model();
1310 // do not use shm here, puts too much pressure on 32bit systems
1311                                 VFrame *cache_frame = new VFrame(vw, vh, vcolor_model, 0);
1312                                 ret = convert_cmodel(cache_frame, frame);
1313                                 if( ret > 0 )
1314                                         ffmpeg->put_cache_frame(cache_frame, curr_pos);
1315                         }
1316                         ++curr_pos;
1317                 }
1318         }
1319         seeking = 0;
1320         if( frame->format == AV_PIX_FMT_NONE || frame->width <= 0 || frame->height <= 0 )
1321                 ret = -1;
1322         if( ret >= 0 ) {
1323                 ret = convert_cmodel(vframe, frame);
1324         }
1325         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
1326         return ret;
1327 }
1328
1329 int FFVideoStream::video_seek(int64_t pos)
1330 {
1331         if( decode_activate() <= 0 ) return -1;
1332         if( !st->codecpar ) return -1;
1333         if( pos == curr_pos-1 && !seeked ) return 0;
1334 // if close enough, just read up to current
1335         int gop = avctx->gop_size;
1336         if( gop < 4 ) gop = 4;
1337         if( gop > 64 ) gop = 64;
1338         int read_limit = curr_pos + 3*gop;
1339         if( pos >= curr_pos && pos <= read_limit ) return 0;
1340 // guarentee preload more than 2*gop frames
1341         if( seek(pos - 3*gop, frame_rate) < 0 ) return -1;
1342         return 1;
1343 }
1344
1345 int FFVideoStream::init_frame(AVFrame *picture)
1346 {
1347         switch( avctx->pix_fmt ) {
1348         case AV_PIX_FMT_VAAPI:
1349                 picture->format = AV_PIX_FMT_NV12;
1350                 break;
1351         default:
1352                 picture->format = avctx->pix_fmt;
1353                 break;
1354         }
1355         picture->width  = avctx->width;
1356         picture->height = avctx->height;
1357         int ret = av_frame_get_buffer(picture, 32);
1358         return ret;
1359 }
1360
1361 int FFVideoStream::convert_hw_frame(AVFrame *ifrm, AVFrame *ofrm)
1362 {
1363         AVPixelFormat ifmt = (AVPixelFormat)ifrm->format;
1364         AVPixelFormat ofmt = (AVPixelFormat)st->codecpar->format;
1365         ofrm->width  = ifrm->width;
1366         ofrm->height = ifrm->height;
1367         ofrm->format = ofmt;
1368         int ret = av_frame_get_buffer(ofrm, 32);
1369         if( ret < 0 ) {
1370                 ff_err(ret, "FFVideoStream::convert_hw_frame:"
1371                                 " av_frame_get_buffer failed\n");
1372                 return -1;
1373         }
1374         fconvert_ctx = sws_getCachedContext(fconvert_ctx,
1375                 ifrm->width, ifrm->height, ifmt,
1376                 ofrm->width, ofrm->height, ofmt,
1377                 SWS_POINT, NULL, NULL, NULL);
1378         if( !fconvert_ctx ) {
1379                 ff_err(AVERROR(EINVAL), "FFVideoStream::convert_hw_frame:"
1380                                 " sws_getCachedContext() failed\n");
1381                 return -1;
1382         }
1383         int codec_range = st->codecpar->color_range;
1384         int codec_space = st->codecpar->color_space;
1385         const int *codec_table = sws_getCoefficients(codec_space);
1386         int *inv_table, *table, src_range, dst_range;
1387         int brightness, contrast, saturation;
1388         if( !sws_getColorspaceDetails(fconvert_ctx,
1389                         &inv_table, &src_range, &table, &dst_range,
1390                         &brightness, &contrast, &saturation) ) {
1391                 if( src_range != codec_range || dst_range != codec_range ||
1392                     inv_table != codec_table || table != codec_table )
1393                         sws_setColorspaceDetails(fconvert_ctx,
1394                                         codec_table, codec_range, codec_table, codec_range,
1395                                         brightness, contrast, saturation);
1396         }
1397         ret = sws_scale(fconvert_ctx,
1398                 ifrm->data, ifrm->linesize, 0, ifrm->height,
1399                 ofrm->data, ofrm->linesize);
1400         if( ret < 0 ) {
1401                 ff_err(ret, "FFVideoStream::convert_hw_frame:"
1402                                 " sws_scale() failed\nfile: %s\n",
1403                                 ffmpeg->fmt_ctx->url);
1404                 return -1;
1405         }
1406         return 0;
1407 }
1408
1409 int FFVideoStream::load_filter(AVFrame *frame)
1410 {
1411         AVPixelFormat pix_fmt = (AVPixelFormat)frame->format;
1412         if( pix_fmt == hw_pixfmt ) {
1413                 AVFrame *hw_frame = this->frame;
1414                 av_frame_unref(hw_frame);
1415                 int ret = av_hwframe_transfer_data(hw_frame, frame, 0);
1416                 if( ret < 0 ) {
1417                         eprintf(_("Error retrieving data from GPU to CPU\nfile: %s\n"),
1418                                 ffmpeg->fmt_ctx->url);
1419                         return -1;
1420                 }
1421                 av_frame_unref(frame);
1422                 ret = convert_hw_frame(hw_frame, frame);
1423                 if( ret < 0 ) {
1424                         eprintf(_("Error converting data from GPU to CPU\nfile: %s\n"),
1425                                 ffmpeg->fmt_ctx->url);
1426                         return -1;
1427                 }
1428                 av_frame_unref(hw_frame);
1429         }
1430         return FFStream::load_filter(frame);
1431 }
1432
1433 int FFVideoStream::encode(VFrame *vframe)
1434 {
1435         if( encode_activate() <= 0 ) return -1;
1436         ffmpeg->flow_ctl();
1437         FFrame *picture = new FFrame(this);
1438         int ret = picture->initted();
1439         if( ret >= 0 ) {
1440                 AVFrame *frame = *picture;
1441                 frame->pts = curr_pos;
1442                 ret = convert_pixfmt(vframe, frame);
1443         }
1444         if( ret >= 0 && avctx->hw_frames_ctx )
1445                 encode_hw_write(picture);
1446         if( ret >= 0 ) {
1447                 picture->queue(curr_pos);
1448                 ++curr_pos;
1449         }
1450         else {
1451                 fprintf(stderr, "FFVideoStream::encode: encode failed\n");
1452                 delete picture;
1453         }
1454         return ret >= 0 ? 0 : 1;
1455 }
1456
1457 int FFVideoStream::drain()
1458 {
1459
1460         return 0;
1461 }
1462
1463 int FFVideoStream::encode_frame(AVFrame *frame)
1464 {
1465         if( frame ) {
1466                 frame->interlaced_frame = interlaced;
1467                 frame->top_field_first = top_field_first;
1468         }
1469         if( frame && frame->format == AV_PIX_FMT_VAAPI ) { // ugly
1470                 int ret = avcodec_send_frame(avctx, frame);
1471                 for( int retry=MAX_RETRY; !ret && --retry>=0; ) {
1472                         FFPacket pkt;  av_init_packet(pkt);
1473                         pkt->data = NULL;  pkt->size = 0;
1474                         if( (ret=avcodec_receive_packet(avctx, pkt)) < 0 ) {
1475                                 if( ret == AVERROR(EAGAIN) ) ret = 0; // weird
1476                                 break;
1477                         }
1478                         ret = write_packet(pkt);
1479                         pkt->stream_index = 0;
1480                         av_packet_unref(pkt);
1481                 }
1482                 if( ret < 0 ) {
1483                         ff_err(ret, "FFStream::encode_frame: vaapi encode failed.\nfile: %s\n",
1484                                 ffmpeg->fmt_ctx->url);
1485                         return -1;
1486                 }
1487                 return 0;
1488         }
1489         return FFStream::encode_frame(frame);
1490 }
1491
1492 int FFVideoStream::write_packet(FFPacket &pkt)
1493 {
1494         if( !(ffmpeg->fmt_ctx->oformat->flags & AVFMT_VARIABLE_FPS) )
1495                 pkt->duration = 1;
1496         return FFStream::write_packet(pkt);
1497 }
1498
1499 AVPixelFormat FFVideoConvert::color_model_to_pix_fmt(int color_model)
1500 {
1501         switch( color_model ) {
1502         case BC_YUV422:         return AV_PIX_FMT_YUYV422;
1503         case BC_RGB888:         return AV_PIX_FMT_RGB24;
1504         case BC_RGBA8888:       return AV_PIX_FMT_RGBA;
1505         case BC_BGR8888:        return AV_PIX_FMT_BGR0;
1506         case BC_BGR888:         return AV_PIX_FMT_BGR24;
1507         case BC_ARGB8888:       return AV_PIX_FMT_ARGB;
1508         case BC_ABGR8888:       return AV_PIX_FMT_ABGR;
1509         case BC_RGB8:           return AV_PIX_FMT_RGB8;
1510         case BC_YUV420P:        return AV_PIX_FMT_YUV420P;
1511         case BC_YUV422P:        return AV_PIX_FMT_YUV422P;
1512         case BC_YUV444P:        return AV_PIX_FMT_YUV444P;
1513         case BC_YUV411P:        return AV_PIX_FMT_YUV411P;
1514         case BC_RGB565:         return AV_PIX_FMT_RGB565;
1515         case BC_RGB161616:      return AV_PIX_FMT_RGB48LE;
1516         case BC_RGBA16161616:   return AV_PIX_FMT_RGBA64LE;
1517         case BC_AYUV16161616:   return AV_PIX_FMT_AYUV64LE;
1518         case BC_GBRP:           return AV_PIX_FMT_GBRP;
1519         default: break;
1520         }
1521
1522         return AV_PIX_FMT_NB;
1523 }
1524
1525 int FFVideoConvert::pix_fmt_to_color_model(AVPixelFormat pix_fmt)
1526 {
1527         switch (pix_fmt) {
1528         case AV_PIX_FMT_YUYV422:        return BC_YUV422;
1529         case AV_PIX_FMT_RGB24:          return BC_RGB888;
1530         case AV_PIX_FMT_RGBA:           return BC_RGBA8888;
1531         case AV_PIX_FMT_BGR0:           return BC_BGR8888;
1532         case AV_PIX_FMT_BGR24:          return BC_BGR888;
1533         case AV_PIX_FMT_ARGB:           return BC_ARGB8888;
1534         case AV_PIX_FMT_ABGR:           return BC_ABGR8888;
1535         case AV_PIX_FMT_RGB8:           return BC_RGB8;
1536         case AV_PIX_FMT_YUV420P:        return BC_YUV420P;
1537         case AV_PIX_FMT_YUV422P:        return BC_YUV422P;
1538         case AV_PIX_FMT_YUV444P:        return BC_YUV444P;
1539         case AV_PIX_FMT_YUV411P:        return BC_YUV411P;
1540         case AV_PIX_FMT_RGB565:         return BC_RGB565;
1541         case AV_PIX_FMT_RGB48LE:        return BC_RGB161616;
1542         case AV_PIX_FMT_RGBA64LE:       return BC_RGBA16161616;
1543         case AV_PIX_FMT_AYUV64LE:       return BC_AYUV16161616;
1544         case AV_PIX_FMT_GBRP:           return BC_GBRP;
1545         default: break;
1546         }
1547
1548         return -1;
1549 }
1550
1551 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip)
1552 {
1553         AVFrame *ipic = av_frame_alloc();
1554         int ret = convert_picture_vframe(frame, ip, ipic);
1555         av_frame_free(&ipic);
1556         return ret;
1557 }
1558
1559 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip, AVFrame *ipic)
1560 { // picture = vframe
1561         int cmodel = frame->get_color_model();
1562         AVPixelFormat ofmt = color_model_to_pix_fmt(cmodel);
1563         if( ofmt == AV_PIX_FMT_NB ) return -1;
1564         int size = av_image_fill_arrays(ipic->data, ipic->linesize,
1565                 frame->get_data(), ofmt, frame->get_w(), frame->get_h(), 1);
1566         if( size < 0 ) return -1;
1567
1568         int bpp = BC_CModels::calculate_pixelsize(cmodel);
1569         int ysz = bpp * frame->get_w(), usz = ysz;
1570         switch( cmodel ) {
1571         case BC_YUV410P:
1572         case BC_YUV411P:
1573                 usz /= 2;
1574         case BC_YUV420P:
1575         case BC_YUV422P:
1576                 usz /= 2;
1577         case BC_YUV444P:
1578         case BC_GBRP:
1579                 // override av_image_fill_arrays() for planar types
1580                 ipic->data[0] = frame->get_y();  ipic->linesize[0] = ysz;
1581                 ipic->data[1] = frame->get_u();  ipic->linesize[1] = usz;
1582                 ipic->data[2] = frame->get_v();  ipic->linesize[2] = usz;
1583                 break;
1584         default:
1585                 ipic->data[0] = frame->get_data();
1586                 ipic->linesize[0] = frame->get_bytes_per_line();
1587                 break;
1588         }
1589
1590         AVPixelFormat pix_fmt = (AVPixelFormat)ip->format;
1591         FFVideoStream *vid =(FFVideoStream *)this;
1592         if( pix_fmt == vid->hw_pixfmt ) {
1593                 int ret = 0;
1594                 if( !sw_frame && !(sw_frame=av_frame_alloc()) )
1595                         ret = AVERROR(ENOMEM);
1596                 if( !ret ) {
1597                         ret = av_hwframe_transfer_data(sw_frame, ip, 0);
1598                         ip = sw_frame;
1599                         pix_fmt = (AVPixelFormat)ip->format;
1600                 }
1601                 if( ret < 0 ) {
1602                         eprintf(_("Error retrieving data from GPU to CPU\nfile: %s\n"),
1603                                 vid->ffmpeg->fmt_ctx->url);
1604                         return -1;
1605                 }
1606         }
1607         convert_ctx = sws_getCachedContext(convert_ctx, ip->width, ip->height, pix_fmt,
1608                 frame->get_w(), frame->get_h(), ofmt, SWS_POINT, NULL, NULL, NULL);
1609         if( !convert_ctx ) {
1610                 fprintf(stderr, "FFVideoConvert::convert_picture_frame:"
1611                                 " sws_getCachedContext() failed\n");
1612                 return -1;
1613         }
1614
1615         int color_range = 0;
1616         switch( preferences->yuv_color_range ) {
1617         case BC_COLORS_JPEG:  color_range = 1;  break;
1618         case BC_COLORS_MPEG:  color_range = 0;  break;
1619         }
1620         int color_space = SWS_CS_ITU601;
1621         switch( preferences->yuv_color_space ) {
1622         case BC_COLORS_BT601_PAL:  color_space = SWS_CS_ITU601;  break;
1623         case BC_COLORS_BT601_NTSC: color_space = SWS_CS_SMPTE170M; break;
1624         case BC_COLORS_BT709:  color_space = SWS_CS_ITU709;  break;
1625         case BC_COLORS_BT2020_NCL:
1626         case BC_COLORS_BT2020_CL: color_space = SWS_CS_BT2020;  break;
1627         }
1628         const int *color_table = sws_getCoefficients(color_space);
1629
1630         int *inv_table, *table, src_range, dst_range;
1631         int brightness, contrast, saturation;
1632         if( !sws_getColorspaceDetails(convert_ctx,
1633                         &inv_table, &src_range, &table, &dst_range,
1634                         &brightness, &contrast, &saturation) ) {
1635                 if( src_range != color_range || dst_range != color_range ||
1636                     inv_table != color_table || table != color_table )
1637                         sws_setColorspaceDetails(convert_ctx,
1638                                         color_table, color_range, color_table, color_range,
1639                                         brightness, contrast, saturation);
1640         }
1641
1642         int ret = sws_scale(convert_ctx, ip->data, ip->linesize, 0, ip->height,
1643             ipic->data, ipic->linesize);
1644         if( ret < 0 ) {
1645                 ff_err(ret, "FFVideoConvert::convert_picture_frame: sws_scale() failed\nfile: %s\n",
1646                         vid->ffmpeg->fmt_ctx->url);
1647                 return -1;
1648         }
1649         return 0;
1650 }
1651
1652 int FFVideoConvert::convert_cmodel(VFrame *frame, AVFrame *ip)
1653 {
1654         // try direct transfer
1655         if( !convert_picture_vframe(frame, ip) ) return 1;
1656         // use indirect transfer
1657         AVPixelFormat ifmt = (AVPixelFormat)ip->format;
1658         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ifmt);
1659         int max_bits = 0;
1660         for( int i = 0; i <desc->nb_components; ++i ) {
1661                 int bits = desc->comp[i].depth;
1662                 if( bits > max_bits ) max_bits = bits;
1663         }
1664         int imodel = pix_fmt_to_color_model(ifmt);
1665         int imodel_is_yuv = BC_CModels::is_yuv(imodel);
1666         int cmodel = frame->get_color_model();
1667         int cmodel_is_yuv = BC_CModels::is_yuv(cmodel);
1668         if( imodel < 0 || imodel_is_yuv != cmodel_is_yuv ) {
1669                 imodel = cmodel_is_yuv ?
1670                     (BC_CModels::has_alpha(cmodel) ?
1671                         BC_AYUV16161616 :
1672                         (max_bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
1673                     (BC_CModels::has_alpha(cmodel) ?
1674                         (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
1675                         (max_bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
1676         }
1677         VFrame vframe(ip->width, ip->height, imodel);
1678         if( convert_picture_vframe(&vframe, ip) ) return -1;
1679         frame->transfer_from(&vframe);
1680         return 1;
1681 }
1682
1683 int FFVideoConvert::transfer_cmodel(VFrame *frame, AVFrame *ifp)
1684 {
1685         int ret = convert_cmodel(frame, ifp);
1686         if( ret > 0 ) {
1687                 const AVDictionary *src = ifp->metadata;
1688                 AVDictionaryEntry *t = NULL;
1689                 BC_Hash *hp = frame->get_params();
1690                 //hp->clear();
1691                 while( (t=av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)) )
1692                         hp->update(t->key, t->value);
1693         }
1694         return ret;
1695 }
1696
1697 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op)
1698 {
1699         AVFrame *opic = av_frame_alloc();
1700         int ret = convert_vframe_picture(frame, op, opic);
1701         av_frame_free(&opic);
1702         return ret;
1703 }
1704
1705 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op, AVFrame *opic)
1706 { // vframe = picture
1707         int cmodel = frame->get_color_model();
1708         AVPixelFormat ifmt = color_model_to_pix_fmt(cmodel);
1709         if( ifmt == AV_PIX_FMT_NB ) return -1;
1710         int size = av_image_fill_arrays(opic->data, opic->linesize,
1711                  frame->get_data(), ifmt, frame->get_w(), frame->get_h(), 1);
1712         if( size < 0 ) return -1;
1713
1714         int bpp = BC_CModels::calculate_pixelsize(cmodel);
1715         int ysz = bpp * frame->get_w(), usz = ysz;
1716         switch( cmodel ) {
1717         case BC_YUV410P:
1718         case BC_YUV411P:
1719                 usz /= 2;
1720         case BC_YUV420P:
1721         case BC_YUV422P:
1722                 usz /= 2;
1723         case BC_YUV444P:
1724         case BC_GBRP:
1725                 // override av_image_fill_arrays() for planar types
1726                 opic->data[0] = frame->get_y();  opic->linesize[0] = ysz;
1727                 opic->data[1] = frame->get_u();  opic->linesize[1] = usz;
1728                 opic->data[2] = frame->get_v();  opic->linesize[2] = usz;
1729                 break;
1730         default:
1731                 opic->data[0] = frame->get_data();
1732                 opic->linesize[0] = frame->get_bytes_per_line();
1733                 break;
1734         }
1735
1736         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1737         convert_ctx = sws_getCachedContext(convert_ctx, frame->get_w(), frame->get_h(),
1738                 ifmt, op->width, op->height, ofmt, SWS_POINT, NULL, NULL, NULL);
1739         if( !convert_ctx ) {
1740                 fprintf(stderr, "FFVideoConvert::convert_frame_picture:"
1741                                 " sws_getCachedContext() failed\n");
1742                 return -1;
1743         }
1744
1745
1746         int color_range = 0;
1747         switch( preferences->yuv_color_range ) {
1748         case BC_COLORS_JPEG:  color_range = 1;  break;
1749         case BC_COLORS_MPEG:  color_range = 0;  break;
1750         }
1751         int color_space = SWS_CS_ITU601;
1752         switch( preferences->yuv_color_space ) {
1753         case BC_COLORS_BT601_PAL:  color_space = SWS_CS_ITU601;  break;
1754         case BC_COLORS_BT601_NTSC: color_space = SWS_CS_SMPTE170M; break;
1755         case BC_COLORS_BT709:  color_space = SWS_CS_ITU709;  break;
1756         case BC_COLORS_BT2020_NCL:
1757         case BC_COLORS_BT2020_CL: color_space = SWS_CS_BT2020;  break;
1758         }
1759         const int *color_table = sws_getCoefficients(color_space);
1760
1761         int *inv_table, *table, src_range, dst_range;
1762         int brightness, contrast, saturation;
1763         if( !sws_getColorspaceDetails(convert_ctx,
1764                         &inv_table, &src_range, &table, &dst_range,
1765                         &brightness, &contrast, &saturation) ) {
1766                 if( dst_range != color_range || table != color_table )
1767                         sws_setColorspaceDetails(convert_ctx,
1768                                         inv_table, src_range, color_table, color_range,
1769                                         brightness, contrast, saturation);
1770         }
1771
1772         int ret = sws_scale(convert_ctx, opic->data, opic->linesize, 0, frame->get_h(),
1773                         op->data, op->linesize);
1774         if( ret < 0 ) {
1775                 ff_err(ret, "FFVideoConvert::convert_frame_picture: sws_scale() failed\n");
1776                 return -1;
1777         }
1778         return 0;
1779 }
1780
1781 int FFVideoConvert::convert_pixfmt(VFrame *frame, AVFrame *op)
1782 {
1783         // try direct transfer
1784         if( !convert_vframe_picture(frame, op) ) return 1;
1785         // use indirect transfer
1786         int cmodel = frame->get_color_model();
1787         int max_bits = BC_CModels::calculate_pixelsize(cmodel) * 8;
1788         max_bits /= BC_CModels::components(cmodel);
1789         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1790         int imodel = pix_fmt_to_color_model(ofmt);
1791         int imodel_is_yuv = BC_CModels::is_yuv(imodel);
1792         int cmodel_is_yuv = BC_CModels::is_yuv(cmodel);
1793         if( imodel < 0 || imodel_is_yuv != cmodel_is_yuv ) {
1794                 imodel = cmodel_is_yuv ?
1795                     (BC_CModels::has_alpha(cmodel) ?
1796                         BC_AYUV16161616 :
1797                         (max_bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
1798                     (BC_CModels::has_alpha(cmodel) ?
1799                         (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
1800                         (max_bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
1801         }
1802         VFrame vframe(frame->get_w(), frame->get_h(), imodel);
1803         vframe.transfer_from(frame);
1804         if( !convert_vframe_picture(&vframe, op) ) return 1;
1805         return -1;
1806 }
1807
1808 int FFVideoConvert::transfer_pixfmt(VFrame *frame, AVFrame *ofp)
1809 {
1810         int ret = convert_pixfmt(frame, ofp);
1811         if( ret > 0 ) {
1812                 BC_Hash *hp = frame->get_params();
1813                 AVDictionary **dict = &ofp->metadata;
1814                 //av_dict_free(dict);
1815                 for( int i=0; i<hp->size(); ++i ) {
1816                         char *key = hp->get_key(i), *val = hp->get_value(i);
1817                         av_dict_set(dict, key, val, 0);
1818                 }
1819         }
1820         return ret;
1821 }
1822
1823 void FFVideoStream::load_markers()
1824 {
1825         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1826         if( !index_state || idx >= index_state->video_markers.size() ) return;
1827         FFStream::load_markers(*index_state->video_markers[idx], frame_rate);
1828 }
1829
1830 IndexMarks *FFVideoStream::get_markers()
1831 {
1832         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1833         if( !index_state || idx >= index_state->video_markers.size() ) return 0;
1834         return !index_state ? 0 : index_state->video_markers[idx];
1835 }
1836
1837
1838 FFMPEG::FFMPEG(FileBase *file_base)
1839 {
1840         fmt_ctx = 0;
1841         this->file_base = file_base;
1842         memset(file_format,0,sizeof(file_format));
1843         mux_lock = new Condition(0,"FFMPEG::mux_lock",0);
1844         flow_lock = new Condition(1,"FFStream::flow_lock",0);
1845         done = -1;
1846         flow = 1;
1847         decoding = encoding = 0;
1848         has_audio = has_video = 0;
1849         interlace_from_codec = 0;
1850         opts = 0;
1851         opt_duration = -1;
1852         opt_video_filter = 0;
1853         opt_audio_filter = 0;
1854         opt_hw_dev = 0;
1855         opt_video_decoder = 0;
1856         opt_audio_decoder = 0;
1857         fflags = 0;
1858         char option_path[BCTEXTLEN];
1859         set_option_path(option_path, "%s", "ffmpeg.opts");
1860         read_options(option_path, opts);
1861 }
1862
1863 FFMPEG::~FFMPEG()
1864 {
1865         ff_lock("FFMPEG::~FFMPEG()");
1866         close_encoder();
1867         ffaudio.remove_all_objects();
1868         ffvideo.remove_all_objects();
1869         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
1870         ff_unlock();
1871         delete flow_lock;
1872         delete mux_lock;
1873         av_dict_free(&opts);
1874         delete [] opt_video_filter;
1875         delete [] opt_audio_filter;
1876         delete [] opt_hw_dev;
1877 }
1878
1879 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
1880 int FFMPEG::check_sample_rate(const AVCodec *codec, int sample_rate)
1881 #else
1882 int FFMPEG::check_sample_rate(AVCodec *codec, int sample_rate)
1883 #endif
1884 {
1885         const int *p = codec->supported_samplerates;
1886         if( !p ) return sample_rate;
1887         while( *p != 0 ) {
1888                 if( *p == sample_rate ) return *p;
1889                 ++p;
1890         }
1891         return 0;
1892 }
1893
1894 // check_frame_rate and std_frame_rate needed for 23.976
1895 // and 59.94 fps mpeg2
1896 static inline AVRational std_frame_rate(int i)
1897 {
1898         static const int m1 = 1001*12, m2 = 1000*12;
1899         static const int freqs[] = {
1900                 40*m1, 48*m1, 50*m1, 60*m1, 80*m1,120*m1, 240*m1,
1901                 24*m2, 30*m2, 60*m2, 12*m2, 15*m2, 48*m2, 90*m2,
1902                 100*m2, 120*m2, 144*m2, 72*m2, 0,
1903         };
1904         int freq = i<30*12 ? (i+1)*1001 : freqs[i-30*12];
1905         return (AVRational) { freq, 1001*12 };
1906 }
1907
1908 AVRational FFMPEG::check_frame_rate(const AVRational *p, double frame_rate)
1909 {
1910         AVRational rate, best_rate = (AVRational) { 0, 0 };
1911         double max_err = 1.;  int i = 0;
1912         while( ((p ? (rate=*p++) : (rate=std_frame_rate(i++))), rate.num) != 0 ) {
1913                 double framerate = (double) rate.num / rate.den;
1914                 double err = fabs(frame_rate/framerate - 1.);
1915                 if( err >= max_err ) continue;
1916                 max_err = err;
1917                 best_rate = rate;
1918         }
1919         return max_err < 0.0001 ? best_rate : (AVRational) { 0, 0 };
1920 }
1921
1922 AVRational FFMPEG::to_sample_aspect_ratio(Asset *asset)
1923 {
1924 #if 1
1925         double display_aspect = asset->width / (double)asset->height;
1926         double sample_aspect = display_aspect / asset->aspect_ratio;
1927         int width = 1000000, height = width * sample_aspect + 0.5;
1928         float w, h;
1929         MWindow::create_aspect_ratio(w, h, width, height);
1930         return (AVRational){(int)w, (int)h};
1931 #else
1932 // square pixels
1933         return (AVRational){1, 1};
1934 #endif
1935 }
1936
1937 AVRational FFMPEG::to_time_base(int sample_rate)
1938 {
1939         return (AVRational){1, sample_rate};
1940 }
1941
1942 int FFMPEG::get_fmt_score(AVSampleFormat dst_fmt, AVSampleFormat src_fmt)
1943 {
1944         int score = 0;
1945         int dst_planar = av_sample_fmt_is_planar(dst_fmt);
1946         int src_planar = av_sample_fmt_is_planar(src_fmt);
1947         if( dst_planar != src_planar ) ++score;
1948         int dst_bytes = av_get_bytes_per_sample(dst_fmt);
1949         int src_bytes = av_get_bytes_per_sample(src_fmt);
1950         score += (src_bytes > dst_bytes ? 100 : -10) * (src_bytes - dst_bytes);
1951         int src_packed = av_get_packed_sample_fmt(src_fmt);
1952         int dst_packed = av_get_packed_sample_fmt(dst_fmt);
1953         if( dst_packed == AV_SAMPLE_FMT_S32 && src_packed == AV_SAMPLE_FMT_FLT ) score += 20;
1954         if( dst_packed == AV_SAMPLE_FMT_FLT && src_packed == AV_SAMPLE_FMT_S32 ) score += 2;
1955         return score;
1956 }
1957
1958 AVSampleFormat FFMPEG::find_best_sample_fmt_of_list(
1959                 const AVSampleFormat *sample_fmts, AVSampleFormat src_fmt)
1960 {
1961         AVSampleFormat best = AV_SAMPLE_FMT_NONE;
1962         int best_score = get_fmt_score(best, src_fmt);
1963         for( int i=0; sample_fmts[i] >= 0; ++i ) {
1964                 AVSampleFormat sample_fmt = sample_fmts[i];
1965                 int score = get_fmt_score(sample_fmt, src_fmt);
1966                 if( score >= best_score ) continue;
1967                 best = sample_fmt;  best_score = score;
1968         }
1969         return best;
1970 }
1971
1972
1973 void FFMPEG::set_option_path(char *path, const char *fmt, ...)
1974 {
1975         char *ep = path + BCTEXTLEN-1;
1976         strncpy(path, File::get_cindat_path(), ep-path);
1977         strncat(path, "/ffmpeg/", ep-path);
1978         path += strlen(path);
1979         va_list ap;
1980         va_start(ap, fmt);
1981         path += vsnprintf(path, ep-path, fmt, ap);
1982         va_end(ap);
1983         *path = 0;
1984 }
1985
1986 void FFMPEG::get_option_path(char *path, const char *type, const char *spec)
1987 {
1988         if( *spec == '/' )
1989                 strcpy(path, spec);
1990         else
1991                 set_option_path(path, "%s/%s", type, spec);
1992 }
1993
1994 int FFMPEG::get_format(char *format, const char *path, const char *spec)
1995 {
1996         char option_path[BCTEXTLEN], line[BCTEXTLEN], codec[BCTEXTLEN];
1997         get_option_path(option_path, path, spec);
1998         FILE *fp = fopen(option_path,"r");
1999         if( !fp ) return 1;
2000         int ret = 0;
2001         if( !fgets(line, sizeof(line), fp) ) ret = 1;
2002         if( !ret ) {
2003                 line[sizeof(line)-1] = 0;
2004                 ret = scan_option_line(line, format, codec);
2005         }
2006         fclose(fp);
2007         return ret;
2008 }
2009
2010 int FFMPEG::get_codec(char *codec, const char *path, const char *spec)
2011 {
2012         char option_path[BCTEXTLEN], line[BCTEXTLEN], format[BCTEXTLEN];
2013         get_option_path(option_path, path, spec);
2014         FILE *fp = fopen(option_path,"r");
2015         if( !fp ) return 1;
2016         int ret = 0;
2017         if( !fgets(line, sizeof(line), fp) ) ret = 1;
2018         fclose(fp);
2019         if( !ret ) {
2020                 line[sizeof(line)-1] = 0;
2021                 ret = scan_option_line(line, format, codec);
2022         }
2023         if( !ret ) {
2024                 char *vp = codec, *ep = vp+BCTEXTLEN-1;
2025                 while( vp < ep && *vp && *vp != '|' ) ++vp;
2026                 if( *vp == '|' ) --vp;
2027                 while( vp > codec && (*vp==' ' || *vp=='\t') ) *vp-- = 0;
2028         }
2029         return ret;
2030 }
2031
2032 int FFMPEG::get_file_format()
2033 {
2034         char audio_muxer[BCSTRLEN], video_muxer[BCSTRLEN];
2035         char audio_format[BCSTRLEN], video_format[BCSTRLEN];
2036         audio_muxer[0] = audio_format[0] = 0;
2037         video_muxer[0] = video_format[0] = 0;
2038         Asset *asset = file_base->asset;
2039         int ret = asset ? 0 : 1;
2040         if( !ret && asset->audio_data ) {
2041                 if( !(ret=get_format(audio_format, "audio", asset->acodec)) ) {
2042                         if( get_format(audio_muxer, "format", audio_format) ) {
2043                                 strcpy(audio_muxer, audio_format);
2044                                 audio_format[0] = 0;
2045                         }
2046                 }
2047         }
2048         if( !ret && asset->video_data ) {
2049                 if( !(ret=get_format(video_format, "video", asset->vcodec)) ) {
2050                         if( get_format(video_muxer, "format", video_format) ) {
2051                                 strcpy(video_muxer, video_format);
2052                                 video_format[0] = 0;
2053                         }
2054                 }
2055         }
2056         if( !ret && !audio_muxer[0] && !video_muxer[0] )
2057                 ret = 1;
2058         if( !ret && audio_muxer[0] && video_muxer[0] &&
2059             strcmp(audio_muxer, video_muxer) ) ret = -1;
2060         if( !ret && audio_format[0] && video_format[0] &&
2061             strcmp(audio_format, video_format) ) ret = -1;
2062         if( !ret )
2063                 strcpy(file_format, !audio_format[0] && !video_format[0] ?
2064                         (audio_muxer[0] ? audio_muxer : video_muxer) :
2065                         (audio_format[0] ? audio_format : video_format));
2066         return ret;
2067 }
2068
2069 int FFMPEG::scan_option_line(const char *cp, char *tag, char *val)
2070 {
2071         while( *cp == ' ' || *cp == '\t' ) ++cp;
2072         const char *bp = cp;
2073         while( *cp && *cp != ' ' && *cp != '\t' && *cp != '=' && *cp != '\n' ) ++cp;
2074         int len = cp - bp;
2075         if( !len || len > BCSTRLEN-1 ) return 1;
2076         while( bp < cp ) *tag++ = *bp++;
2077         *tag = 0;
2078         while( *cp == ' ' || *cp == '\t' ) ++cp;
2079         if( *cp == '=' ) ++cp;
2080         while( *cp == ' ' || *cp == '\t' ) ++cp;
2081         bp = cp;
2082         while( *cp && *cp != '\n' ) ++cp;
2083         len = cp - bp;
2084         if( len > BCTEXTLEN-1 ) return 1;
2085         while( bp < cp ) *val++ = *bp++;
2086         *val = 0;
2087         return 0;
2088 }
2089
2090 int FFMPEG::can_render(const char *fformat, const char *type)
2091 {
2092         FileSystem fs;
2093         char option_path[BCTEXTLEN];
2094         FFMPEG::set_option_path(option_path, type);
2095         fs.update(option_path);
2096         int total_files = fs.total_files();
2097         for( int i=0; i<total_files; ++i ) {
2098                 const char *name = fs.get_entry(i)->get_name();
2099                 const char *ext = strrchr(name,'.');
2100                 if( !ext ) continue;
2101                 if( !strcmp(fformat, ++ext) ) return 1;
2102         }
2103         return 0;
2104 }
2105
2106 int FFMPEG::get_ff_option(const char *nm, const char *options, char *value)
2107 {
2108         for( const char *cp=options; *cp!=0; ) {
2109                 char line[BCTEXTLEN], *bp = line, *ep = bp+sizeof(line)-1;
2110                 while( bp < ep && *cp && *cp!='\n' ) *bp++ = *cp++;
2111                 if( *cp ) ++cp;
2112                 *bp = 0;
2113                 if( !line[0] || line[0] == '#' || line[0] == ';' ) continue;
2114                 char key[BCSTRLEN], val[BCTEXTLEN];
2115                 if( FFMPEG::scan_option_line(line, key, val) ) continue;
2116                 if( !strcmp(key, nm) ) {
2117                         strncpy(value, val, BCSTRLEN);
2118                         return 0;
2119                 }
2120         }
2121         return 1;
2122 }
2123
2124 void FFMPEG::scan_audio_options(Asset *asset, EDL *edl)
2125 {
2126         char cin_sample_fmt[BCSTRLEN];
2127         int cin_fmt = AV_SAMPLE_FMT_NONE;
2128         const char *options = asset->ff_audio_options;
2129         if( !get_ff_option("cin_sample_fmt", options, cin_sample_fmt) )
2130                 cin_fmt = (int)av_get_sample_fmt(cin_sample_fmt);
2131         if( cin_fmt < 0 ) {
2132                 char audio_codec[BCSTRLEN]; audio_codec[0] = 0;
2133 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,18,100)
2134                 const AVCodec *av_codec = !FFMPEG::get_codec(audio_codec, "audio", asset->acodec) ?
2135 #else
2136                 AVCodec *av_codec = !FFMPEG::get_codec(audio_codec, "audio", asset->acodec) ?
2137 #endif
2138                         avcodec_find_encoder_by_name(audio_codec) : 0;
2139                 if( av_codec && av_codec->sample_fmts )
2140                         cin_fmt = find_best_sample_fmt_of_list(av_codec->sample_fmts, AV_SAMPLE_FMT_FLT);
2141         }
2142         if( cin_fmt < 0 ) cin_fmt = AV_SAMPLE_FMT_S16;
2143         const char *name = av_get_sample_fmt_name((AVSampleFormat)cin_fmt);
2144         if( !name ) name = _("None");
2145         strcpy(asset->ff_sample_format, name);
2146
2147         char value[BCSTRLEN];
2148         if( !get_ff_option("cin_bitrate", options, value) )
2149                 asset->ff_audio_bitrate = atoi(value);
2150         if( !get_ff_option("cin_quality", options, value) )
2151                 asset->ff_audio_quality = atoi(value);
2152 }
2153
2154 void FFMPEG::load_audio_options(Asset *asset, EDL *edl)
2155 {
2156         char options_path[BCTEXTLEN];
2157         set_option_path(options_path, "audio/%s", asset->acodec);
2158         if( !load_options(options_path,
2159                         asset->ff_audio_options,
2160                         sizeof(asset->ff_audio_options)) )
2161                 scan_audio_options(asset, edl);
2162 }
2163
2164 void FFMPEG::scan_video_options(Asset *asset, EDL *edl)
2165 {
2166         char cin_pix_fmt[BCSTRLEN];
2167         int cin_fmt = AV_PIX_FMT_NONE;
2168         const char *options = asset->ff_video_options;
2169         if( !get_ff_option("cin_pix_fmt", options, cin_pix_fmt) )
2170                         cin_fmt = (int)av_get_pix_fmt(cin_pix_fmt);
2171         if( cin_fmt < 0 ) {
2172                 char video_codec[BCSTRLEN];  video_codec[0] = 0;
2173 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,18,100)
2174                 const AVCodec *av_codec = !get_codec(video_codec, "video", asset->vcodec) ?
2175 #else
2176                 AVCodec *av_codec = !get_codec(video_codec, "video", asset->vcodec) ?
2177 #endif
2178                         avcodec_find_encoder_by_name(video_codec) : 0;
2179                 if( av_codec && av_codec->pix_fmts ) {
2180                         if( 0 && edl ) { // frequently picks a bad answer
2181                                 int color_model = edl->session->color_model;
2182                                 int max_bits = BC_CModels::calculate_pixelsize(color_model) * 8;
2183                                 max_bits /= BC_CModels::components(color_model);
2184                                 cin_fmt = avcodec_find_best_pix_fmt_of_list(av_codec->pix_fmts,
2185                                         (BC_CModels::is_yuv(color_model) ?
2186                                                 (max_bits > 8 ? AV_PIX_FMT_AYUV64LE : AV_PIX_FMT_YUV444P) :
2187                                                 (max_bits > 8 ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB24)), 0, 0);
2188                         }
2189                         else
2190                                 cin_fmt = av_codec->pix_fmts[0];
2191                 }
2192         }
2193         if( cin_fmt < 0 ) cin_fmt = AV_PIX_FMT_YUV420P;
2194         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get((AVPixelFormat)cin_fmt);
2195         const char *name = desc ? desc->name : _("None");
2196         strcpy(asset->ff_pixel_format, name);
2197
2198         char value[BCSTRLEN];
2199         if( !get_ff_option("cin_bitrate", options, value) )
2200                 asset->ff_video_bitrate = atoi(value);
2201         if( !get_ff_option("cin_quality", options, value) )
2202                 asset->ff_video_quality = atoi(value);
2203 }
2204
2205 void FFMPEG::load_video_options(Asset *asset, EDL *edl)
2206 {
2207         char options_path[BCTEXTLEN];
2208         set_option_path(options_path, "video/%s", asset->vcodec);
2209         if( !load_options(options_path,
2210                         asset->ff_video_options,
2211                         sizeof(asset->ff_video_options)) )
2212                 scan_video_options(asset, edl);
2213 }
2214
2215 void FFMPEG::scan_format_options(Asset *asset, EDL *edl)
2216 {
2217 }
2218
2219 void FFMPEG::load_format_options(Asset *asset, EDL *edl)
2220 {
2221         char options_path[BCTEXTLEN];
2222         set_option_path(options_path, "format/%s", asset->fformat);
2223         if( !load_options(options_path,
2224                         asset->ff_format_options,
2225                         sizeof(asset->ff_format_options)) )
2226                 scan_format_options(asset, edl);
2227 }
2228
2229 int FFMPEG::load_defaults(const char *path, const char *type,
2230                  char *codec, char *codec_options, int len)
2231 {
2232         char default_file[BCTEXTLEN];
2233         set_option_path(default_file, "%s/%s.dfl", path, type);
2234         FILE *fp = fopen(default_file,"r");
2235         if( !fp ) return 1;
2236         fgets(codec, BCSTRLEN, fp);
2237         char *cp = codec;
2238         while( *cp && *cp!='\n' ) ++cp;
2239         *cp = 0;
2240         while( len > 0 && fgets(codec_options, len, fp) ) {
2241                 int n = strlen(codec_options);
2242                 codec_options += n;  len -= n;
2243         }
2244         fclose(fp);
2245         set_option_path(default_file, "%s/%s", path, codec);
2246         return load_options(default_file, codec_options, len);
2247 }
2248
2249 void FFMPEG::set_asset_format(Asset *asset, EDL *edl, const char *text)
2250 {
2251         if( asset->format != FILE_FFMPEG ) return;
2252         if( text != asset->fformat )
2253                 strcpy(asset->fformat, text);
2254         if( !asset->ff_format_options[0] )
2255                 load_format_options(asset, edl);
2256         if( asset->audio_data && !asset->ff_audio_options[0] ) {
2257                 if( !load_defaults("audio", text, asset->acodec,
2258                                 asset->ff_audio_options, sizeof(asset->ff_audio_options)) )
2259                         scan_audio_options(asset, edl);
2260                 else
2261                         asset->audio_data = 0;
2262         }
2263         if( asset->video_data && !asset->ff_video_options[0] ) {
2264                 if( !load_defaults("video", text, asset->vcodec,
2265                                 asset->ff_video_options, sizeof(asset->ff_video_options)) )
2266                         scan_video_options(asset, edl);
2267                 else
2268                         asset->video_data = 0;
2269         }
2270 }
2271
2272 int FFMPEG::get_encoder(const char *options,
2273                 char *format, char *codec, char *bsfilter)
2274 {
2275         FILE *fp = fopen(options,"r");
2276         if( !fp ) {
2277                 eprintf(_("options open failed %s\n"),options);
2278                 return 1;
2279         }
2280         char line[BCTEXTLEN];
2281         if( !fgets(line, sizeof(line), fp) ||
2282             scan_encoder(line, format, codec, bsfilter) )
2283                 eprintf(_("format/codec not found %s\n"), options);
2284         fclose(fp);
2285         return 0;
2286 }
2287
2288 int FFMPEG::scan_encoder(const char *line,
2289                 char *format, char *codec, char *bsfilter)
2290 {
2291         format[0] = codec[0] = bsfilter[0] = 0;
2292         if( scan_option_line(line, format, codec) ) return 1;
2293         char *cp = codec;
2294         while( *cp && *cp != '|' ) ++cp;
2295         if( !*cp ) return 0;
2296         char *bp = cp;
2297         do { *bp-- = 0; } while( bp>=codec && (*bp==' ' || *bp == '\t' ) );
2298         while( *++cp && (*cp==' ' || *cp == '\t') );
2299         bp = bsfilter;
2300         for( int i=BCTEXTLEN; --i>0 && *cp; ) *bp++ = *cp++;
2301         *bp = 0;
2302         return 0;
2303 }
2304
2305 int FFMPEG::read_options(const char *options, AVDictionary *&opts, int skip)
2306 {
2307         FILE *fp = fopen(options,"r");
2308         if( !fp ) return 1;
2309         int ret = 0;
2310         while( !ret && --skip >= 0 ) {
2311                 int ch = getc(fp);
2312                 while( ch >= 0 && ch != '\n' ) ch = getc(fp);
2313                 if( ch < 0 ) ret = 1;
2314         }
2315         if( !ret )
2316                 ret = read_options(fp, options, opts);
2317         fclose(fp);
2318         return ret;
2319 }
2320
2321 int FFMPEG::scan_options(const char *options, AVDictionary *&opts, AVStream *st)
2322 {
2323         FILE *fp = fmemopen((void *)options,strlen(options),"r");
2324         if( !fp ) return 0;
2325         int ret = read_options(fp, options, opts);
2326         fclose(fp);
2327         if( !ret && st ) {
2328                 AVDictionaryEntry *tag = av_dict_get(opts, "id", NULL, 0);
2329                 if( tag ) st->id = strtol(tag->value,0,0);
2330         }
2331         return ret;
2332 }
2333
2334 void FFMPEG::put_cache_frame(VFrame *frame, int64_t position)
2335 {
2336         file_base->file->put_cache_frame(frame, position, 0);
2337 }
2338
2339 int FFMPEG::get_use_cache()
2340 {
2341         return file_base->file->get_use_cache();
2342 }
2343
2344 void FFMPEG::purge_cache()
2345 {
2346         file_base->file->purge_cache();
2347 }
2348
2349 FFCodecRemap::FFCodecRemap()
2350 {
2351         old_codec = 0;
2352         new_codec = 0;
2353 }
2354 FFCodecRemap::~FFCodecRemap()
2355 {
2356         delete [] old_codec;
2357         delete [] new_codec;
2358 }
2359
2360 int FFCodecRemaps::add(const char *val)
2361 {
2362         char old_codec[BCSTRLEN], new_codec[BCSTRLEN];
2363         if( sscanf(val, " %63[a-zA-z0-9_-] = %63[a-z0-9_-]",
2364                 &old_codec[0], &new_codec[0]) != 2 ) return 1;
2365         FFCodecRemap &remap = append();
2366         remap.old_codec = cstrdup(old_codec);
2367         remap.new_codec = cstrdup(new_codec);
2368         return 0;
2369 }
2370
2371 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
2372 int FFCodecRemaps::update(AVCodecID &codec_id, const AVCodec *&decoder)
2373 {
2374         const AVCodec *codec = avcodec_find_decoder(codec_id);
2375 #else
2376 int FFCodecRemaps::update(AVCodecID &codec_id, AVCodec *&decoder)
2377 {
2378         AVCodec *codec = avcodec_find_decoder(codec_id);
2379 #endif
2380         if( !codec ) return -1;
2381         const char *name = codec->name;
2382         FFCodecRemaps &map = *this;
2383         int k = map.size();
2384         while( --k >= 0 && strcmp(map[k].old_codec, name) );
2385         if( k < 0 ) return 1;
2386         const char *new_codec = map[k].new_codec;
2387         codec = avcodec_find_decoder_by_name(new_codec);
2388         if( !codec ) return -1;
2389         decoder = codec;
2390         return 0;
2391 }
2392
2393 int FFMPEG::read_options(FILE *fp, const char *options, AVDictionary *&opts)
2394 {
2395         int ret = 0, no = 0;
2396         char line[BCTEXTLEN];
2397         while( !ret && fgets(line, sizeof(line), fp) ) {
2398                 line[sizeof(line)-1] = 0;
2399                 if( line[0] == '#' ) continue;
2400                 if( line[0] == '\n' ) continue;
2401                 char key[BCSTRLEN], val[BCTEXTLEN];
2402                 if( scan_option_line(line, key, val) ) {
2403                         eprintf(_("err reading %s: line %d\n"), options, no);
2404                         ret = 1;
2405                 }
2406                 if( !ret ) {
2407                         if( !strcmp(key, "duration") )
2408                                 opt_duration = strtod(val, 0);
2409                         else if( !strcmp(key, "video_decoder") )
2410                                 opt_video_decoder = cstrdup(val);
2411                         else if( !strcmp(key, "audio_decoder") )
2412                                 opt_audio_decoder = cstrdup(val);
2413                         else if( !strcmp(key, "remap_video_decoder") )
2414                                 video_codec_remaps.add(val);
2415                         else if( !strcmp(key, "remap_audio_decoder") )
2416                                 audio_codec_remaps.add(val);
2417                         else if( !strcmp(key, "video_filter") )
2418                                 opt_video_filter = cstrdup(val);
2419                         else if( !strcmp(key, "audio_filter") )
2420                                 opt_audio_filter = cstrdup(val);
2421                         else if( !strcmp(key, "cin_hw_dev") )
2422                                 opt_hw_dev = cstrdup(val);
2423                         else if( !strcmp(key, "loglevel") )
2424                                 set_loglevel(val);
2425                         else
2426                                 av_dict_set(&opts, key, val, 0);
2427                 }
2428         }
2429         return ret;
2430 }
2431
2432 int FFMPEG::load_options(const char *options, AVDictionary *&opts)
2433 {
2434         char option_path[BCTEXTLEN];
2435         set_option_path(option_path, "%s", options);
2436         return read_options(option_path, opts);
2437 }
2438
2439 int FFMPEG::load_options(const char *path, char *bfr, int len)
2440 {
2441         *bfr = 0;
2442         FILE *fp = fopen(path, "r");
2443         if( !fp ) return 1;
2444         fgets(bfr, len, fp); // skip hdr
2445         len = fread(bfr, 1, len-1, fp);
2446         if( len < 0 ) len = 0;
2447         bfr[len] = 0;
2448         fclose(fp);
2449         return 0;
2450 }
2451
2452 void FFMPEG::set_loglevel(const char *ap)
2453 {
2454         if( !ap || !*ap ) return;
2455         const struct {
2456                 const char *name;
2457                 int level;
2458         } log_levels[] = {
2459                 { "quiet"  , AV_LOG_QUIET   },
2460                 { "panic"  , AV_LOG_PANIC   },
2461                 { "fatal"  , AV_LOG_FATAL   },
2462                 { "error"  , AV_LOG_ERROR   },
2463                 { "warning", AV_LOG_WARNING },
2464                 { "info"   , AV_LOG_INFO    },
2465                 { "verbose", AV_LOG_VERBOSE },
2466                 { "debug"  , AV_LOG_DEBUG   },
2467         };
2468         for( int i=0; i<(int)(sizeof(log_levels)/sizeof(log_levels[0])); ++i ) {
2469                 if( !strcmp(log_levels[i].name, ap) ) {
2470                         av_log_set_level(log_levels[i].level);
2471                         return;
2472                 }
2473         }
2474         av_log_set_level(atoi(ap));
2475 }
2476
2477 double FFMPEG::to_secs(int64_t time, AVRational time_base)
2478 {
2479         double base_time = time == AV_NOPTS_VALUE ? 0 :
2480                 av_rescale_q(time, time_base, AV_TIME_BASE_Q);
2481         return base_time / AV_TIME_BASE;
2482 }
2483
2484 int FFMPEG::info(char *text, int len)
2485 {
2486         if( len <= 0 ) return 0;
2487         decode_activate();
2488 #define report(s...) do { int n = snprintf(cp,len,s); cp += n;  len -= n; } while(0)
2489         char *cp = text;
2490         report("format: %s\n",fmt_ctx->iformat->name);
2491         if( ffvideo.size() > 0 )
2492                 report("\n%d video stream%s\n",ffvideo.size(), ffvideo.size()!=1 ? "s" : "");
2493         for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
2494                 const char *unkn = _("(unkn)");
2495                 FFVideoStream *vid = ffvideo[vidx];
2496                 AVStream *st = vid->st;
2497                 AVCodecID codec_id = st->codecpar->codec_id;
2498                 report(_("vid%d (%d),  id 0x%06x:\n"), vid->idx, vid->fidx, codec_id);
2499                 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2500                 report("  video%d %s ", vidx+1, desc ? desc->name : unkn);
2501                 report(" %dx%d %5.2f", vid->width, vid->height, vid->frame_rate);
2502                 AVPixelFormat pix_fmt = (AVPixelFormat)st->codecpar->format;
2503                 const char *pfn = av_get_pix_fmt_name(pix_fmt);
2504                 report(" pix %s\n", pfn ? pfn : unkn);
2505                 int interlace = st->codecpar->field_order;
2506                 report("  interlace (container level): %i\n", interlace ? interlace : -1);
2507                 int interlace_codec = interlace_from_codec;
2508                 report("  interlace (codec level): %i\n", interlace_codec ? interlace_codec : -1);
2509                 enum AVColorSpace space = st->codecpar->color_space;
2510                 const char *nm = av_color_space_name(space);
2511                 report("    color space:%s", nm ? nm : unkn);
2512                 enum AVColorRange range = st->codecpar->color_range;
2513                 const char *rg = av_color_range_name(range);
2514                 report("/ range:%s\n", rg ? rg : unkn);
2515                 double secs = to_secs(st->duration, st->time_base);
2516                 int64_t length = secs * vid->frame_rate + 0.5;
2517                 double ofs = to_secs((vid->nudge - st->start_time), st->time_base);
2518                 int64_t nudge = ofs * vid->frame_rate;
2519                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
2520                 report("    %jd%c%jd frms %0.2f secs", length,ch,nudge, secs);
2521                 int hrs = secs/3600;  secs -= hrs*3600;
2522                 int mins = secs/60;  secs -= mins*60;
2523                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
2524                 double theta = vid->get_rotation_angle();
2525                 if( fabs(theta) > 1 )
2526                         report("    rotation angle: %0.1f\n", theta);
2527         }
2528         if( ffaudio.size() > 0 )
2529                 report("\n%d audio stream%s\n",ffaudio.size(), ffaudio.size()!=1 ? "s" : "");
2530         for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
2531                 FFAudioStream *aud = ffaudio[aidx];
2532                 AVStream *st = aud->st;
2533                 AVCodecID codec_id = st->codecpar->codec_id;
2534                 report(_("aud%d (%d),  id 0x%06x:\n"), aud->idx, aud->fidx, codec_id);
2535                 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2536                 int nch = aud->channels, ch0 = aud->channel0+1;
2537                 report("  audio%d-%d %s", ch0, ch0+nch-1, desc ? desc->name : " (unkn)");
2538                 AVSampleFormat sample_fmt = (AVSampleFormat)st->codecpar->format;
2539                 const char *fmt = av_get_sample_fmt_name(sample_fmt);
2540                 report(" %s %d", fmt, aud->sample_rate);
2541                 int sample_bits = av_get_bits_per_sample(codec_id);
2542                 report(" %dbits\n", sample_bits);
2543                 double secs = to_secs(st->duration, st->time_base);
2544                 int64_t length = secs * aud->sample_rate + 0.5;
2545                 double ofs = to_secs((aud->nudge - st->start_time), st->time_base);
2546                 int64_t nudge = ofs * aud->sample_rate;
2547                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
2548                 report("    %jd%c%jd smpl %0.2f secs", length,ch,nudge, secs);
2549                 int hrs = secs/3600;  secs -= hrs*3600;
2550                 int mins = secs/60;  secs -= mins*60;
2551                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
2552         }
2553         if( fmt_ctx->nb_programs > 0 )
2554                 report("\n%d program%s\n",fmt_ctx->nb_programs, fmt_ctx->nb_programs!=1 ? "s" : "");
2555         for( int i=0; i<(int)fmt_ctx->nb_programs; ++i ) {
2556                 report("program %d", i+1);
2557                 AVProgram *pgrm = fmt_ctx->programs[i];
2558                 for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
2559                         int idx = pgrm->stream_index[j];
2560                         int vidx = ffvideo.size();
2561                         while( --vidx>=0 && ffvideo[vidx]->fidx != idx );
2562                         if( vidx >= 0 ) {
2563                                 report(", vid%d", vidx);
2564                                 continue;
2565                         }
2566                         int aidx = ffaudio.size();
2567                         while( --aidx>=0 && ffaudio[aidx]->fidx != idx );
2568                         if( aidx >= 0 ) {
2569                                 report(", aud%d", aidx);
2570                                 continue;
2571                         }
2572                         report(", (%d)", pgrm->stream_index[j]);
2573                 }
2574                 report("\n");
2575         }
2576         report("\n");
2577         AVDictionaryEntry *tag = 0;
2578         while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
2579                 report("%s=%s\n", tag->key, tag->value);
2580
2581         if( !len ) --cp;
2582         *cp = 0;
2583         return cp - text;
2584 #undef report
2585 }
2586
2587
2588 int FFMPEG::init_decoder(const char *filename)
2589 {
2590         ff_lock("FFMPEG::init_decoder");
2591         av_register_all();
2592         char file_opts[BCTEXTLEN];
2593         strcpy(file_opts, filename);
2594         char *bp = strrchr(file_opts, '/');
2595         if( !bp ) bp = file_opts;
2596         char *sp = strrchr(bp, '.');
2597         if( !sp ) sp = bp + strlen(bp);
2598         FILE *fp = 0;
2599 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,18,100)
2600         const AVInputFormat *ifmt = 0;
2601 #else
2602         AVInputFormat *ifmt = 0;
2603 #endif
2604         if( sp ) {
2605                 strcpy(sp, ".opts");
2606                 fp = fopen(file_opts, "r");
2607         }
2608         if( fp ) {
2609                 read_options(fp, file_opts, opts);
2610                 fclose(fp);
2611                 AVDictionaryEntry *tag;
2612                 if( (tag=av_dict_get(opts, "format", NULL, 0)) != 0 ) {
2613                         ifmt = av_find_input_format(tag->value);
2614                 }
2615         }
2616         else
2617                 load_options("decode.opts", opts);
2618         AVDictionary *fopts = 0;
2619         av_dict_copy(&fopts, opts, 0);
2620         int ret = avformat_open_input(&fmt_ctx, filename, ifmt, &fopts);
2621         av_dict_free(&fopts);
2622         if( ret >= 0 )
2623                 ret = avformat_find_stream_info(fmt_ctx, NULL);
2624         if( !ret ) {
2625                 decoding = -1;
2626         }
2627         ff_unlock();
2628         return !ret ? 0 : 1;
2629 }
2630
2631 int FFMPEG::open_decoder()
2632 {
2633         struct stat st;
2634         if( stat(fmt_ctx->url, &st) < 0 ) {
2635                 eprintf(_("can't stat file: %s\n"), fmt_ctx->url);
2636                 return 1;
2637         }
2638
2639         int64_t file_bits = 8 * st.st_size;
2640         if( !fmt_ctx->bit_rate && opt_duration > 0 )
2641                 fmt_ctx->bit_rate = file_bits / opt_duration;
2642
2643         int estimated = 0;
2644         if( fmt_ctx->bit_rate > 0 ) {
2645                 for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
2646                         AVStream *st = fmt_ctx->streams[i];
2647                         if( st->duration != AV_NOPTS_VALUE ) continue;
2648                         if( st->time_base.num > INT64_MAX / fmt_ctx->bit_rate ) continue;
2649                         st->duration = av_rescale(file_bits, st->time_base.den,
2650                                 fmt_ctx->bit_rate * (int64_t) st->time_base.num);
2651                         estimated = 1;
2652                 }
2653         }
2654         if( estimated && !(fflags & FF_ESTM_TIMES) ) {
2655                 fflags |= FF_ESTM_TIMES;
2656                 printf("FFMPEG::open_decoder: some stream times estimated: %s\n",
2657                         fmt_ctx->url);
2658         }
2659
2660         ff_lock("FFMPEG::open_decoder");
2661         int ret = 0, bad_time = 0;
2662         for( int i=0; !ret && i<(int)fmt_ctx->nb_streams; ++i ) {
2663                 AVStream *st = fmt_ctx->streams[i];
2664                 if( st->duration == AV_NOPTS_VALUE ) bad_time = 1;
2665                 AVCodecParameters *avpar = st->codecpar;
2666                 const AVCodecDescriptor *codec_desc = avcodec_descriptor_get(avpar->codec_id);
2667                 if( !codec_desc ) continue;
2668                 switch( avpar->codec_type ) {
2669                 case AVMEDIA_TYPE_VIDEO: {
2670                         if( avpar->width < 1 ) continue;
2671                         if( avpar->height < 1 ) continue;
2672                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
2673                         if( framerate.num < 1 ) continue;
2674                         has_video = 1;
2675                         int vidx = ffvideo.size();
2676                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, i);
2677                         vstrm_index.append(ffidx(vidx, 0));
2678                         ffvideo.append(vid);
2679                         vid->width = avpar->width;
2680                         vid->height = avpar->height;
2681                         vid->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
2682                         switch( avpar->color_range ) {
2683                         case AVCOL_RANGE_MPEG:
2684                                 vid->color_range = BC_COLORS_MPEG;
2685                                 break;
2686                         case AVCOL_RANGE_JPEG:
2687                                 vid->color_range = BC_COLORS_JPEG;
2688                                 break;
2689                         default:
2690                                 vid->color_range = !file_base ? BC_COLORS_JPEG :
2691                                         file_base->file->preferences->yuv_color_range;
2692                                 break;
2693                         }
2694                         switch( avpar->color_space ) {
2695                         case AVCOL_SPC_BT470BG:
2696                                 vid->color_space = BC_COLORS_BT601_PAL;
2697                                 break;
2698                         case AVCOL_SPC_SMPTE170M:
2699                                 vid->color_space = BC_COLORS_BT601_NTSC;
2700                                 break;
2701                         case AVCOL_SPC_BT709:
2702                                 vid->color_space = BC_COLORS_BT709;
2703                                 break;
2704                         case AVCOL_SPC_BT2020_NCL:
2705                                 vid->color_space = BC_COLORS_BT2020_NCL;
2706                                 break;
2707                         case AVCOL_SPC_BT2020_CL:
2708                                 vid->color_space = BC_COLORS_BT2020_CL;
2709                                 break;
2710                         default:
2711                                 vid->color_space = !file_base ? BC_COLORS_BT601_NTSC :
2712                                         file_base->file->preferences->yuv_color_space;
2713                                 break;
2714                         }
2715                         double secs = to_secs(st->duration, st->time_base);
2716                         vid->length = secs * vid->frame_rate;
2717                         vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den;
2718                         vid->nudge = st->start_time;
2719                         vid->reading = -1;
2720                         ret = vid->create_filter(opt_video_filter);
2721                         break; }
2722                 case AVMEDIA_TYPE_AUDIO: {
2723                         if( avpar->channels < 1 ) continue;
2724                         if( avpar->sample_rate < 1 ) continue;
2725                         has_audio = 1;
2726                         int aidx = ffaudio.size();
2727                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, i);
2728                         ffaudio.append(aud);
2729                         aud->channel0 = astrm_index.size();
2730                         aud->channels = avpar->channels;
2731                         for( int ch=0; ch<aud->channels; ++ch )
2732                                 astrm_index.append(ffidx(aidx, ch));
2733                         aud->sample_rate = avpar->sample_rate;
2734                         double secs = to_secs(st->duration, st->time_base);
2735                         aud->length = secs * aud->sample_rate;
2736                         aud->init_swr(aud->channels, avpar->format, aud->sample_rate);
2737                         aud->nudge = st->start_time;
2738                         aud->reading = -1;
2739                         ret = aud->create_filter(opt_audio_filter);
2740                         break; }
2741                 default: break;
2742                 }
2743         }
2744         if( bad_time && !(fflags & FF_BAD_TIMES) ) {
2745                 fflags |= FF_BAD_TIMES;
2746                 printf(_("FFMPEG::open_decoder: some stream have bad times: %s\n"),
2747                         fmt_ctx->url);
2748         }
2749         ff_unlock();
2750         return ret < 0 ? -1 : 0;
2751 }
2752
2753
2754 int FFMPEG::init_encoder(const char *filename)
2755 {
2756 // try access first for named pipes
2757         int ret = access(filename, W_OK);
2758         if( ret ) {
2759                 int fd = ::open(filename,O_WRONLY);
2760                 if( fd < 0 ) fd = open(filename,O_WRONLY+O_CREAT,0666);
2761                 if( fd >= 0 ) { close(fd);  ret = 0; }
2762         }
2763         if( ret ) {
2764                 eprintf(_("bad file path: %s\n"), filename);
2765                 return 1;
2766         }
2767         ret = get_file_format();
2768         if( ret > 0 ) {
2769                 eprintf(_("bad file format: %s\n"), filename);
2770                 return 1;
2771         }
2772         if( ret < 0 ) {
2773                 eprintf(_("mismatch audio/video file format: %s\n"), filename);
2774                 return 1;
2775         }
2776         ff_lock("FFMPEG::init_encoder");
2777         av_register_all();
2778         char format[BCSTRLEN];
2779         if( get_format(format, "format", file_format) )
2780                 strcpy(format, file_format);
2781         avformat_alloc_output_context2(&fmt_ctx, 0, format, filename);
2782         if( !fmt_ctx ) {
2783                 eprintf(_("failed: %s\n"), filename);
2784                 ret = 1;
2785         }
2786         if( !ret ) {
2787                 encoding = -1;
2788                 load_options("encode.opts", opts);
2789         }
2790         ff_unlock();
2791         return ret;
2792 }
2793
2794 int FFMPEG::open_encoder(const char *type, const char *spec)
2795 {
2796
2797         Asset *asset = file_base->asset;
2798         char *filename = asset->path;
2799         AVDictionary *sopts = 0;
2800         av_dict_copy(&sopts, opts, 0);
2801         char option_path[BCTEXTLEN];
2802         set_option_path(option_path, "%s/%s.opts", type, type);
2803         read_options(option_path, sopts);
2804         get_option_path(option_path, type, spec);
2805         char format_name[BCSTRLEN], codec_name[BCTEXTLEN], bsfilter[BCTEXTLEN];
2806         if( get_encoder(option_path, format_name, codec_name, bsfilter) ) {
2807                 eprintf(_("get_encoder failed %s:%s\n"), option_path, filename);
2808                 return 1;
2809         }
2810
2811 #ifdef HAVE_DV
2812         if( !strcmp(codec_name, CODEC_TAG_DVSD) ) strcpy(codec_name, "dv");
2813 #endif
2814         else if( !strcmp(codec_name, CODEC_TAG_MJPEG) ) strcpy(codec_name, "mjpeg");
2815         else if( !strcmp(codec_name, CODEC_TAG_JPEG) ) strcpy(codec_name, "jpeg");
2816
2817         int ret = 0;
2818         ff_lock("FFMPEG::open_encoder");
2819         FFStream *fst = 0;
2820         AVStream *st = 0;
2821         AVCodecContext *ctx = 0;
2822
2823         const AVCodecDescriptor *codec_desc = 0;
2824 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
2825         const AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
2826 #else
2827         AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
2828 #endif
2829         if( !codec ) {
2830                 eprintf(_("cant find codec %s:%s\n"), codec_name, filename);
2831                 ret = 1;
2832         }
2833         if( !ret ) {
2834                 codec_desc = avcodec_descriptor_get(codec->id);
2835                 if( !codec_desc ) {
2836                         eprintf(_("unknown codec %s:%s\n"), codec_name, filename);
2837                         ret = 1;
2838                 }
2839         }
2840         if( !ret ) {
2841                 st = avformat_new_stream(fmt_ctx, 0);
2842                 if( !st ) {
2843                         eprintf(_("cant create stream %s:%s\n"), codec_name, filename);
2844                         ret = 1;
2845                 }
2846         }
2847         if( !ret ) {
2848                 switch( codec_desc->type ) {
2849                 case AVMEDIA_TYPE_AUDIO: {
2850                         if( has_audio ) {
2851                                 eprintf(_("duplicate audio %s:%s\n"), codec_name, filename);
2852                                 ret = 1;
2853                                 break;
2854                         }
2855                         if( scan_options(asset->ff_audio_options, sopts, st) ) {
2856                                 eprintf(_("bad audio options %s:%s\n"), codec_name, filename);
2857                                 ret = 1;
2858                                 break;
2859                         }
2860                         has_audio = 1;
2861                         ctx = avcodec_alloc_context3(codec);
2862                         if( asset->ff_audio_bitrate > 0 ) {
2863                                 ctx->bit_rate = asset->ff_audio_bitrate;
2864                                 char arg[BCSTRLEN];
2865                                 sprintf(arg, "%d", asset->ff_audio_bitrate);
2866                                 av_dict_set(&sopts, "b", arg, 0);
2867                         }
2868                         else if( asset->ff_audio_quality >= 0 ) {
2869                                 ctx->global_quality = asset->ff_audio_quality * FF_QP2LAMBDA;
2870                                 ctx->qmin    = ctx->qmax =  asset->ff_audio_quality;
2871                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
2872                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
2873                                 ctx->flags |= AV_CODEC_FLAG_QSCALE;
2874                                 char arg[BCSTRLEN];
2875                                 av_dict_set(&sopts, "flags", "+qscale", 0);
2876                                 sprintf(arg, "%d", asset->ff_audio_quality);
2877                                 av_dict_set(&sopts, "qscale", arg, 0);
2878                                 sprintf(arg, "%d", ctx->global_quality);
2879                                 av_dict_set(&sopts, "global_quality", arg, 0);
2880                         }
2881                         int aidx = ffaudio.size();
2882                         int fidx = aidx + ffvideo.size();
2883                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, fidx);
2884                         aud->avctx = ctx;  ffaudio.append(aud);  fst = aud;
2885                         aud->sample_rate = asset->sample_rate;
2886                         ctx->channels = aud->channels = asset->channels;
2887                         for( int ch=0; ch<aud->channels; ++ch )
2888                                 astrm_index.append(ffidx(aidx, ch));
2889                         ctx->channel_layout =  av_get_default_channel_layout(ctx->channels);
2890                         ctx->sample_rate = check_sample_rate(codec, asset->sample_rate);
2891                         if( !ctx->sample_rate ) {
2892                                 eprintf(_("check_sample_rate failed %s\n"), filename);
2893                                 ret = 1;
2894                                 break;
2895                         }
2896                         ctx->time_base = st->time_base = (AVRational){1, aud->sample_rate};
2897                         AVSampleFormat sample_fmt = av_get_sample_fmt(asset->ff_sample_format);
2898                         if( sample_fmt == AV_SAMPLE_FMT_NONE )
2899                                 sample_fmt = codec->sample_fmts ? codec->sample_fmts[0] : AV_SAMPLE_FMT_S16;
2900                         ctx->sample_fmt = sample_fmt;
2901                         uint64_t layout = av_get_default_channel_layout(ctx->channels);
2902                         aud->resample_context = swr_alloc_set_opts(NULL,
2903                                 layout, ctx->sample_fmt, aud->sample_rate,
2904                                 layout, AV_SAMPLE_FMT_FLT, ctx->sample_rate,
2905                                 0, NULL);
2906                         swr_init(aud->resample_context);
2907                         aud->writing = -1;
2908                         break; }
2909                 case AVMEDIA_TYPE_VIDEO: {
2910                         if( has_video ) {
2911                                 eprintf(_("duplicate video %s:%s\n"), codec_name, filename);
2912                                 ret = 1;
2913                                 break;
2914                         }
2915                         if( scan_options(asset->ff_video_options, sopts, st) ) {
2916                                 eprintf(_("bad video options %s:%s\n"), codec_name, filename);
2917                                 ret = 1;
2918                                 break;
2919                         }
2920                         has_video = 1;
2921                         ctx = avcodec_alloc_context3(codec);
2922                         if( asset->ff_video_bitrate > 0 ) {
2923                                 ctx->bit_rate = asset->ff_video_bitrate;
2924                                 char arg[BCSTRLEN];
2925                                 sprintf(arg, "%d", asset->ff_video_bitrate);
2926                                 av_dict_set(&sopts, "b", arg, 0);
2927                         }
2928                         else if( asset->ff_video_quality >= 0 ) {
2929                                 ctx->global_quality = asset->ff_video_quality * FF_QP2LAMBDA;
2930                                 ctx->qmin    = ctx->qmax =  asset->ff_video_quality;
2931                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
2932                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
2933                                 ctx->flags |= AV_CODEC_FLAG_QSCALE;
2934                                 char arg[BCSTRLEN];
2935                                 av_dict_set(&sopts, "flags", "+qscale", 0);
2936                                 sprintf(arg, "%d", asset->ff_video_quality);
2937                                 av_dict_set(&sopts, "qscale", arg, 0);
2938                                 sprintf(arg, "%d", ctx->global_quality);
2939                                 av_dict_set(&sopts, "global_quality", arg, 0);
2940                         }
2941                         int vidx = ffvideo.size();
2942                         int fidx = vidx + ffaudio.size();
2943                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, fidx);
2944                         vstrm_index.append(ffidx(vidx, 0));
2945                         vid->avctx = ctx;  ffvideo.append(vid);  fst = vid;
2946                         vid->width = asset->width;
2947                         vid->height = asset->height;
2948                         vid->frame_rate = asset->frame_rate;
2949                         if( (vid->color_range = asset->ff_color_range) < 0 )
2950                                 vid->color_range = file_base->file->preferences->yuv_color_range;
2951                         switch( vid->color_range ) {
2952                         case BC_COLORS_MPEG:  ctx->color_range = AVCOL_RANGE_MPEG;  break;
2953                         case BC_COLORS_JPEG:  ctx->color_range = AVCOL_RANGE_JPEG;  break;
2954                         }
2955                         if( (vid->color_space = asset->ff_color_space) < 0 )
2956                                 vid->color_space = file_base->file->preferences->yuv_color_space;
2957                         switch( vid->color_space ) {
2958                         case BC_COLORS_BT601_NTSC:  ctx->colorspace = AVCOL_SPC_SMPTE170M;  break;
2959                         case BC_COLORS_BT601_PAL: ctx->colorspace = AVCOL_SPC_BT470BG; break;
2960                         case BC_COLORS_BT709:  ctx->colorspace = AVCOL_SPC_BT709;      break;
2961                         case BC_COLORS_BT2020_NCL: ctx->colorspace = AVCOL_SPC_BT2020_NCL; break;
2962                         case BC_COLORS_BT2020_CL: ctx->colorspace = AVCOL_SPC_BT2020_CL; break;
2963                         }
2964                         AVPixelFormat pix_fmt = av_get_pix_fmt(asset->ff_pixel_format);
2965                         if( opt_hw_dev != 0 ) {
2966                                 AVHWDeviceType hw_type = vid->encode_hw_activate(opt_hw_dev);
2967                                 switch( hw_type ) {
2968                                 case AV_HWDEVICE_TYPE_VAAPI:
2969                                         pix_fmt = AV_PIX_FMT_VAAPI;
2970                                         break;
2971                                 case AV_HWDEVICE_TYPE_NONE:
2972                                 default: break;
2973                                 }
2974                         }
2975                         if( pix_fmt == AV_PIX_FMT_NONE )
2976                                 pix_fmt = codec->pix_fmts ? codec->pix_fmts[0] : AV_PIX_FMT_YUV420P;
2977                         ctx->pix_fmt = pix_fmt;
2978
2979                         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
2980                         int mask_w = (1<<desc->log2_chroma_w)-1;
2981                         ctx->width = (vid->width+mask_w) & ~mask_w;
2982                         int mask_h = (1<<desc->log2_chroma_h)-1;
2983                         ctx->height = (vid->height+mask_h) & ~mask_h;
2984                         ctx->sample_aspect_ratio = to_sample_aspect_ratio(asset);
2985                         AVRational frame_rate;
2986                         if (ctx->codec->id == AV_CODEC_ID_MPEG1VIDEO ||
2987                             ctx->codec->id == AV_CODEC_ID_MPEG2VIDEO)
2988                         frame_rate = check_frame_rate(codec->supported_framerates, vid->frame_rate);
2989                         else
2990                         frame_rate = av_d2q(vid->frame_rate, INT_MAX);
2991                         if( !frame_rate.num || !frame_rate.den ) {
2992                                 eprintf(_("check_frame_rate failed %s\n"), filename);
2993                                 ret = 1;
2994                                 break;
2995                         }
2996                         av_reduce(&frame_rate.num, &frame_rate.den,
2997                                 frame_rate.num, frame_rate.den, INT_MAX);
2998                         ctx->framerate = (AVRational) { frame_rate.num, frame_rate.den };
2999                         ctx->time_base = (AVRational) { frame_rate.den, frame_rate.num };
3000                         st->avg_frame_rate = frame_rate;
3001                         st->time_base = ctx->time_base;
3002                         vid->writing = -1;
3003                         vid->interlaced = asset->interlace_mode == ILACE_MODE_TOP_FIRST ||
3004                                 asset->interlace_mode == ILACE_MODE_BOTTOM_FIRST ? 1 : 0;
3005                         vid->top_field_first = asset->interlace_mode == ILACE_MODE_TOP_FIRST ? 1 : 0;
3006                         switch (asset->interlace_mode)  {
3007                         case ILACE_MODE_TOP_FIRST:
3008                         if (ctx->codec->id == AV_CODEC_ID_MJPEG)
3009                         av_dict_set(&sopts, "field_order", "tt", 0);
3010                         else
3011                         av_dict_set(&sopts, "field_order", "tb", 0);
3012                         if (ctx->codec_id != AV_CODEC_ID_MJPEG)
3013                         av_dict_set(&sopts, "flags", "+ilme+ildct", 0);
3014                         break;
3015                         case ILACE_MODE_BOTTOM_FIRST:
3016                         if (ctx->codec->id == AV_CODEC_ID_MJPEG)
3017                         av_dict_set(&sopts, "field_order", "bb", 0);
3018                         else
3019                         av_dict_set(&sopts, "field_order", "bt", 0);
3020                         if (ctx->codec_id != AV_CODEC_ID_MJPEG)
3021                         av_dict_set(&sopts, "flags", "+ilme+ildct", 0);
3022                         break;
3023                         case ILACE_MODE_NOTINTERLACED: av_dict_set(&sopts, "field_order", "progressive", 0); break;
3024                         }
3025                         break; }
3026                 default:
3027                         eprintf(_("not audio/video, %s:%s\n"), codec_name, filename);
3028                         ret = 1;
3029                 }
3030
3031                 if( ctx ) {
3032                         AVDictionaryEntry *tag;
3033                         if( (tag=av_dict_get(sopts, "cin_stats_filename", NULL, 0)) != 0 ) {
3034                                 char suffix[BCSTRLEN];  sprintf(suffix,"-%d.log",fst->fidx);
3035                                 fst->stats_filename = cstrcat(2, tag->value, suffix);
3036                         }
3037                         if( (tag=av_dict_get(sopts, "flags", NULL, 0)) != 0 ) {
3038                                 int pass = fst->pass;
3039                                 char *cp = tag->value;
3040                                 while( *cp ) {
3041                                         int ch = *cp++, pfx = ch=='-' ? -1 : ch=='+' ? 1 : 0;
3042                                         if( !isalnum(!pfx ? ch : (ch=*cp++)) ) continue;
3043                                         char id[BCSTRLEN], *bp = id, *ep = bp+sizeof(id)-1;
3044                                         for( *bp++=ch; isalnum(ch=*cp); ++cp )
3045                                                 if( bp < ep ) *bp++ = ch;
3046                                         *bp = 0;
3047                                         if( !strcmp(id, "pass1") ) {
3048                                                 pass = pfx<0 ? (pass&~1) : pfx>0 ? (pass|1) : 1;
3049                                         }
3050                                         else if( !strcmp(id, "pass2") ) {
3051                                                 pass = pfx<0 ? (pass&~2) : pfx>0 ? (pass|2) : 2;
3052                                         }
3053                                 }
3054                                 if( (fst->pass=pass) ) {
3055                                         if( pass & 1 ) ctx->flags |= AV_CODEC_FLAG_PASS1;
3056                                         if( pass & 2 ) ctx->flags |= AV_CODEC_FLAG_PASS2;
3057                                 }
3058                         }
3059                 }
3060         }
3061         if( !ret ) {
3062                 if( fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER )
3063                         ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
3064                 if( fst->stats_filename && (ret=fst->init_stats_file()) )
3065                         eprintf(_("error: stats file = %s\n"), fst->stats_filename);
3066         }
3067         if( !ret ) {
3068                 av_dict_set(&sopts, "cin_bitrate", 0, 0);
3069                 av_dict_set(&sopts, "cin_quality", 0, 0);
3070
3071                 if( !av_dict_get(sopts, "threads", NULL, 0) )
3072                         ctx->thread_count = ff_cpus();
3073                 ret = avcodec_open2(ctx, codec, &sopts);
3074                 if( ret >= 0 ) {
3075                         ret = avcodec_parameters_from_context(st->codecpar, ctx);
3076                         if( ret < 0 )
3077                                 fprintf(stderr, "Could not copy the stream parameters\n");
3078                 }
3079                 if( ret >= 0 ) {
3080 _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
3081 #if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(58,134,100)
3082                         ret = avcodec_copy_context(st->codec, ctx);
3083 #else
3084                         ret = avcodec_parameters_to_context(ctx, st->codecpar);
3085 #endif
3086 _Pragma("GCC diagnostic warning \"-Wdeprecated-declarations\"")
3087                         if( ret < 0 )
3088                                 fprintf(stderr, "Could not copy the stream context\n");
3089                 }
3090                 if( ret < 0 ) {
3091                         ff_err(ret,"FFMPEG::open_encoder");
3092                         eprintf(_("open failed %s:%s\n"), codec_name, filename);
3093                         ret = 1;
3094                 }
3095                 else
3096                         ret = 0;
3097         }
3098         if( !ret && fst && bsfilter[0] ) {
3099                 ret = av_bsf_list_parse_str(bsfilter, &fst->bsfc);
3100                 if( ret < 0 ) {
3101                         ff_err(ret,"FFMPEG::open_encoder");
3102                         eprintf(_("bitstream filter failed %s:\n%s\n"), filename, bsfilter);
3103                         ret = 1;
3104                 }
3105                 else
3106                         ret = 0;
3107         }
3108
3109         if( !ret )
3110                 start_muxer();
3111
3112         ff_unlock();
3113         av_dict_free(&sopts);
3114         return ret;
3115 }
3116
3117 int FFMPEG::close_encoder()
3118 {
3119         stop_muxer();
3120         if( encoding > 0 ) {
3121                 av_write_trailer(fmt_ctx);
3122                 if( !(fmt_ctx->flags & AVFMT_NOFILE) )
3123                         avio_closep(&fmt_ctx->pb);
3124         }
3125         encoding = 0;
3126         return 0;
3127 }
3128
3129 int FFMPEG::decode_activate()
3130 {
3131         if( decoding < 0 ) {
3132                 decoding = 0;
3133                 for( int vidx=0; vidx<ffvideo.size(); ++vidx )
3134                         ffvideo[vidx]->nudge = AV_NOPTS_VALUE;
3135                 for( int aidx=0; aidx<ffaudio.size(); ++aidx )
3136                         ffaudio[aidx]->nudge = AV_NOPTS_VALUE;
3137                 // set nudges for each program stream set
3138                 const int64_t min_nudge = INT64_MIN+1;
3139                 int npgrms = fmt_ctx->nb_programs;
3140                 for( int i=0; i<npgrms; ++i ) {
3141                         AVProgram *pgrm = fmt_ctx->programs[i];
3142                         // first start time video stream
3143                         int64_t vstart_time = min_nudge, astart_time = min_nudge;
3144                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
3145                                 int fidx = pgrm->stream_index[j];
3146                                 AVStream *st = fmt_ctx->streams[fidx];
3147                                 AVCodecParameters *avpar = st->codecpar;
3148                                 if( avpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
3149                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
3150                                         if( vstart_time < st->start_time )
3151                                                 vstart_time = st->start_time;
3152                                         continue;
3153                                 }
3154                                 if( avpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
3155                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
3156                                         if( astart_time < st->start_time )
3157                                                 astart_time = st->start_time;
3158                                         continue;
3159                                 }
3160                         }
3161                         //since frame rate is much more grainy than sample rate, it is better to
3162                         // align using video, so that total absolute error is minimized.
3163                         int64_t nudge = vstart_time > min_nudge ? vstart_time :
3164                                 astart_time > min_nudge ? astart_time : AV_NOPTS_VALUE;
3165                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
3166                                 int fidx = pgrm->stream_index[j];
3167                                 AVStream *st = fmt_ctx->streams[fidx];
3168                                 AVCodecParameters *avpar = st->codecpar;
3169                                 if( avpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
3170                                         for( int k=0; k<ffvideo.size(); ++k ) {
3171                                                 if( ffvideo[k]->fidx != fidx ) continue;
3172                                                 ffvideo[k]->nudge = nudge;
3173                                         }
3174                                         continue;
3175                                 }
3176                                 if( avpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
3177                                         for( int k=0; k<ffaudio.size(); ++k ) {
3178                                                 if( ffaudio[k]->fidx != fidx ) continue;
3179                                                 ffaudio[k]->nudge = nudge;
3180                                         }
3181                                         continue;
3182                                 }
3183                         }
3184                 }
3185                 // set nudges for any streams not yet set
3186                 int64_t vstart_time = min_nudge, astart_time = min_nudge;
3187                 int nstreams = fmt_ctx->nb_streams;
3188                 for( int i=0; i<nstreams; ++i ) {
3189                         AVStream *st = fmt_ctx->streams[i];
3190                         AVCodecParameters *avpar = st->codecpar;
3191                         switch( avpar->codec_type ) {
3192                         case AVMEDIA_TYPE_VIDEO: {
3193                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
3194                                 int vidx = ffvideo.size();
3195                                 while( --vidx >= 0 && ffvideo[vidx]->fidx != i );
3196                                 if( vidx < 0 ) continue;
3197                                 if( ffvideo[vidx]->nudge != AV_NOPTS_VALUE ) continue;
3198                                 if( vstart_time < st->start_time )
3199                                         vstart_time = st->start_time;
3200                                 break; }
3201                         case AVMEDIA_TYPE_AUDIO: {
3202                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
3203                                 int aidx = ffaudio.size();
3204                                 while( --aidx >= 0 && ffaudio[aidx]->fidx != i );
3205                                 if( aidx < 0 ) continue;
3206                                 if( ffaudio[aidx]->frame_sz < avpar->frame_size )
3207                                         ffaudio[aidx]->frame_sz = avpar->frame_size;
3208                                 if( ffaudio[aidx]->nudge != AV_NOPTS_VALUE ) continue;
3209                                 if( astart_time < st->start_time )
3210                                         astart_time = st->start_time;
3211                                 break; }
3212                         default: break;
3213                         }
3214                 }
3215                 int64_t nudge = vstart_time > min_nudge ? vstart_time :
3216                         astart_time > min_nudge ? astart_time : 0;
3217                 for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
3218                         if( ffvideo[vidx]->nudge == AV_NOPTS_VALUE )
3219                                 ffvideo[vidx]->nudge = nudge;
3220                 }
3221                 for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
3222                         if( ffaudio[aidx]->nudge == AV_NOPTS_VALUE )
3223                                 ffaudio[aidx]->nudge = nudge;
3224                 }
3225                 decoding = 1;
3226         }
3227         return decoding;
3228 }
3229
3230 int FFMPEG::encode_activate()
3231 {
3232         int ret = 0;
3233         if( encoding < 0 ) {
3234                 encoding = 0;
3235                 if( !(fmt_ctx->flags & AVFMT_NOFILE) &&
3236                     (ret=avio_open(&fmt_ctx->pb, fmt_ctx->url, AVIO_FLAG_WRITE)) < 0 ) {
3237                         ff_err(ret, "FFMPEG::encode_activate: err opening : %s\n",
3238                                 fmt_ctx->url);
3239                         return -1;
3240                 }
3241                 if( !strcmp(file_format, "image2") ) {
3242                         Asset *asset = file_base->asset;
3243                         const char *filename = asset->path;
3244                         FILE *fp = fopen(filename,"w");
3245                         if( !fp ) {
3246                                 eprintf(_("Cant write image2 header file: %s\n  %m"), filename);
3247                                 return 1;
3248                         }
3249                         fprintf(fp, "IMAGE2\n");
3250                         fprintf(fp, "# Frame rate: %f\n", asset->frame_rate);
3251                         fprintf(fp, "# Width: %d\n", asset->width);
3252                         fprintf(fp, "# Height: %d\n", asset->height);
3253                         fclose(fp);
3254                 }
3255                 int prog_id = 1;
3256                 AVProgram *prog = av_new_program(fmt_ctx, prog_id);
3257                 for( int i=0; i< ffvideo.size(); ++i )
3258                         av_program_add_stream_index(fmt_ctx, prog_id, ffvideo[i]->fidx);
3259                 for( int i=0; i< ffaudio.size(); ++i )
3260                         av_program_add_stream_index(fmt_ctx, prog_id, ffaudio[i]->fidx);
3261                 int pi = fmt_ctx->nb_programs;
3262                 while(  --pi >= 0 && fmt_ctx->programs[pi]->id != prog_id );
3263                 AVDictionary **meta = &prog->metadata;
3264                 av_dict_set(meta, "service_provider", "cin5", 0);
3265                 const char *path = fmt_ctx->url, *bp = strrchr(path,'/');
3266                 if( bp ) path = bp + 1;
3267                 av_dict_set(meta, "title", path, 0);
3268
3269                 if( ffaudio.size() ) {
3270                         const char *ep = getenv("CIN_AUDIO_LANG"), *lp = 0;
3271                         if( !ep && (lp=getenv("LANG")) ) { // some are guesses
3272                                 static struct { const char lc[3], lng[4]; } lcode[] = {
3273                                         { "en", "eng" }, { "de", "ger" }, { "es", "spa" },
3274                                         { "eu", "bas" }, { "fr", "fre" }, { "el", "gre" },
3275                                         { "hi", "hin" }, { "it", "ita" }, { "ja", "jap" },
3276                                         { "ko", "kor" }, { "du", "dut" }, { "pl", "pol" },
3277                                         { "pt", "por" }, { "ru", "rus" }, { "sl", "slv" },
3278                                         { "uk", "ukr" }, { "vi", "vie" }, { "zh", "chi" },
3279                                 };
3280                                 for( int i=sizeof(lcode)/sizeof(lcode[0]); --i>=0 && !ep; )
3281                                         if( !strncmp(lcode[i].lc,lp,2) ) ep = lcode[i].lng;
3282                         }
3283                         if( !ep ) ep = "und";
3284                         char lang[5];
3285                         strncpy(lang,ep,3);  lang[3] = 0;
3286                         AVStream *st = ffaudio[0]->st;
3287                         av_dict_set(&st->metadata,"language",lang,0);
3288                 }
3289
3290                 AVDictionary *fopts = 0;
3291                 char option_path[BCTEXTLEN];
3292                 set_option_path(option_path, "format/%s", file_format);
3293                 read_options(option_path, fopts, 1);
3294                 av_dict_copy(&fopts, opts, 0);
3295                 if( scan_options(file_base->asset->ff_format_options, fopts, 0) ) {
3296                         eprintf(_("bad format options %s\n"), file_base->asset->path);
3297                         ret = -1;
3298                 }
3299                 if( ret >= 0 )
3300                         ret = avformat_write_header(fmt_ctx, &fopts);
3301                 if( ret < 0 ) {
3302                         ff_err(ret, "FFMPEG::encode_activate: write header failed %s\n",
3303                                 fmt_ctx->url);
3304                         return -1;
3305                 }
3306                 av_dict_free(&fopts);
3307                 encoding = 1;
3308         }
3309         return encoding;
3310 }
3311
3312
3313 int FFMPEG::audio_seek(int stream, int64_t pos)
3314 {
3315         int aidx = astrm_index[stream].st_idx;
3316         FFAudioStream *aud = ffaudio[aidx];
3317         aud->audio_seek(pos);
3318         return 0;
3319 }
3320
3321 int FFMPEG::video_probe(int64_t pos)
3322 {
3323         int vidx = vstrm_index[0].st_idx;
3324         FFVideoStream *vid = ffvideo[vidx];
3325         vid->probe(pos);
3326
3327         int interlace1 = interlace_from_codec;
3328         //printf("interlace from codec: %i\n", interlace1);
3329
3330         switch (interlace1)
3331         {
3332         case AV_FIELD_TT:
3333         case AV_FIELD_TB:
3334             return ILACE_MODE_TOP_FIRST;
3335         case AV_FIELD_BB:
3336         case AV_FIELD_BT:
3337             return ILACE_MODE_BOTTOM_FIRST;
3338         case AV_FIELD_PROGRESSIVE:
3339             return ILACE_MODE_NOTINTERLACED;
3340         default:
3341             return ILACE_MODE_UNDETECTED;
3342         }
3343
3344 }
3345
3346
3347
3348 int FFMPEG::video_seek(int stream, int64_t pos)
3349 {
3350         int vidx = vstrm_index[stream].st_idx;
3351         FFVideoStream *vid = ffvideo[vidx];
3352         vid->video_seek(pos);
3353         return 0;
3354 }
3355
3356
3357 int FFMPEG::decode(int chn, int64_t pos, double *samples, int len)
3358 {
3359         if( !has_audio || chn >= astrm_index.size() ) return -1;
3360         int aidx = astrm_index[chn].st_idx;
3361         FFAudioStream *aud = ffaudio[aidx];
3362         if( aud->load(pos, len) < len ) return -1;
3363         int ch = astrm_index[chn].st_ch;
3364         int ret = aud->read(samples,len,ch);
3365         return ret;
3366 }
3367
3368 int FFMPEG::decode(int layer, int64_t pos, VFrame *vframe)
3369 {
3370         if( !has_video || layer >= vstrm_index.size() ) return -1;
3371         int vidx = vstrm_index[layer].st_idx;
3372         FFVideoStream *vid = ffvideo[vidx];
3373         return vid->load(vframe, pos);
3374 }
3375
3376
3377 int FFMPEG::encode(int stream, double **samples, int len)
3378 {
3379         FFAudioStream *aud = ffaudio[stream];
3380         return aud->encode(samples, len);
3381 }
3382
3383
3384 int FFMPEG::encode(int stream, VFrame *frame)
3385 {
3386         FFVideoStream *vid = ffvideo[stream];
3387         return vid->encode(frame);
3388 }
3389
3390 void FFMPEG::start_muxer()
3391 {
3392         if( !running() ) {
3393                 done = 0;
3394                 start();
3395         }
3396 }
3397
3398 void FFMPEG::stop_muxer()
3399 {
3400         if( running() ) {
3401                 done = 1;
3402                 mux_lock->unlock();
3403         }
3404         join();
3405 }
3406
3407 void FFMPEG::flow_off()
3408 {
3409         if( !flow ) return;
3410         flow_lock->lock("FFMPEG::flow_off");
3411         flow = 0;
3412 }
3413
3414 void FFMPEG::flow_on()
3415 {
3416         if( flow ) return;
3417         flow = 1;
3418         flow_lock->unlock();
3419 }
3420
3421 void FFMPEG::flow_ctl()
3422 {
3423         while( !flow ) {
3424                 flow_lock->lock("FFMPEG::flow_ctl");
3425                 flow_lock->unlock();
3426         }
3427 }
3428
3429 int FFMPEG::mux_audio(FFrame *frm)
3430 {
3431         FFStream *fst = frm->fst;
3432         AVCodecContext *ctx = fst->avctx;
3433         AVFrame *frame = *frm;
3434         AVRational tick_rate = {1, ctx->sample_rate};
3435         frame->pts = av_rescale_q(frm->position, tick_rate, ctx->time_base);
3436         int ret = fst->encode_frame(frame);
3437         if( ret < 0 )
3438                 ff_err(ret, "FFMPEG::mux_audio");
3439         return ret >= 0 ? 0 : 1;
3440 }
3441
3442 int FFMPEG::mux_video(FFrame *frm)
3443 {
3444         FFStream *fst = frm->fst;
3445         AVFrame *frame = *frm;
3446         frame->pts = frm->position;
3447         int ret = fst->encode_frame(frame);
3448         if( ret < 0 )
3449                 ff_err(ret, "FFMPEG::mux_video");
3450         return ret >= 0 ? 0 : 1;
3451 }
3452
3453 void FFMPEG::mux()
3454 {
3455         for(;;) {
3456                 double atm = -1, vtm = -1;
3457                 FFrame *afrm = 0, *vfrm = 0;
3458                 int demand = 0;
3459                 for( int i=0; i<ffaudio.size(); ++i ) {  // earliest audio
3460                         FFStream *fst = ffaudio[i];
3461                         if( fst->frm_count < 3 ) { demand = 1; flow_on(); }
3462                         FFrame *frm = fst->frms.first;
3463                         if( !frm ) { if( !done ) return; continue; }
3464                         double tm = to_secs(frm->position, fst->avctx->time_base);
3465                         if( atm < 0 || tm < atm ) { atm = tm;  afrm = frm; }
3466                 }
3467                 for( int i=0; i<ffvideo.size(); ++i ) {  // earliest video
3468                         FFStream *fst = ffvideo[i];
3469                         if( fst->frm_count < 2 ) { demand = 1; flow_on(); }
3470                         FFrame *frm = fst->frms.first;
3471                         if( !frm ) { if( !done ) return; continue; }
3472                         double tm = to_secs(frm->position, fst->avctx->time_base);
3473                         if( vtm < 0 || tm < vtm ) { vtm = tm;  vfrm = frm; }
3474                 }
3475                 if( !demand ) flow_off();
3476                 if( !afrm && !vfrm ) break;
3477                 int v = !afrm ? -1 : !vfrm ? 1 : av_compare_ts(
3478                         vfrm->position, vfrm->fst->avctx->time_base,
3479                         afrm->position, afrm->fst->avctx->time_base);
3480                 FFrame *frm = v <= 0 ? vfrm : afrm;
3481                 if( frm == afrm ) mux_audio(frm);
3482                 if( frm == vfrm ) mux_video(frm);
3483                 frm->dequeue();
3484                 delete frm;
3485         }
3486 }
3487
3488 void FFMPEG::run()
3489 {
3490         while( !done ) {
3491                 mux_lock->lock("FFMPEG::run");
3492                 if( !done ) mux();
3493         }
3494         for( int i=0; i<ffaudio.size(); ++i )
3495                 ffaudio[i]->drain();
3496         for( int i=0; i<ffvideo.size(); ++i )
3497                 ffvideo[i]->drain();
3498         mux();
3499         for( int i=0; i<ffaudio.size(); ++i )
3500                 ffaudio[i]->flush();
3501         for( int i=0; i<ffvideo.size(); ++i )
3502                 ffvideo[i]->flush();
3503 }
3504
3505
3506 int FFMPEG::ff_total_audio_channels()
3507 {
3508         return astrm_index.size();
3509 }
3510
3511 int FFMPEG::ff_total_astreams()
3512 {
3513         return ffaudio.size();
3514 }
3515
3516 int FFMPEG::ff_audio_channels(int stream)
3517 {
3518         return ffaudio[stream]->channels;
3519 }
3520
3521 int FFMPEG::ff_sample_rate(int stream)
3522 {
3523         return ffaudio[stream]->sample_rate;
3524 }
3525
3526 const char* FFMPEG::ff_audio_format(int stream)
3527 {
3528         AVStream *st = ffaudio[stream]->st;
3529         AVCodecID id = st->codecpar->codec_id;
3530         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
3531         return desc ? desc->name : _("Unknown");
3532 }
3533
3534 int FFMPEG::ff_audio_pid(int stream)
3535 {
3536         return ffaudio[stream]->st->id;
3537 }
3538
3539 int64_t FFMPEG::ff_audio_samples(int stream)
3540 {
3541         return ffaudio[stream]->length;
3542 }
3543
3544 // find audio astream/channels with this program,
3545 //   or all program audio channels (astream=-1)
3546 int FFMPEG::ff_audio_for_video(int vstream, int astream, int64_t &channel_mask)
3547 {
3548         channel_mask = 0;
3549         int pidx = -1;
3550         int vidx = ffvideo[vstream]->fidx;
3551         // find first program with this video stream
3552         for( int i=0; pidx<0 && i<(int)fmt_ctx->nb_programs; ++i ) {
3553                 AVProgram *pgrm = fmt_ctx->programs[i];
3554                 for( int j=0;  pidx<0 && j<(int)pgrm->nb_stream_indexes; ++j ) {
3555                         int st_idx = pgrm->stream_index[j];
3556                         AVStream *st = fmt_ctx->streams[st_idx];
3557                         if( st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO ) continue;
3558                         if( st_idx == vidx ) pidx = i;
3559                 }
3560         }
3561         if( pidx < 0 ) return -1;
3562         int ret = -1;
3563         int64_t channels = 0;
3564         AVProgram *pgrm = fmt_ctx->programs[pidx];
3565         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
3566                 int aidx = pgrm->stream_index[j];
3567                 AVStream *st = fmt_ctx->streams[aidx];
3568                 if( st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
3569                 if( astream > 0 ) { --astream;  continue; }
3570                 int astrm = -1;
3571                 for( int i=0; astrm<0 && i<ffaudio.size(); ++i )
3572                         if( ffaudio[i]->fidx == aidx ) astrm = i;
3573                 if( astrm >= 0 ) {
3574                         if( ret < 0 ) ret = astrm;
3575                         int64_t mask = (1 << ffaudio[astrm]->channels) - 1;
3576                         channels |= mask << ffaudio[astrm]->channel0;
3577                 }
3578                 if( !astream ) break;
3579         }
3580         channel_mask = channels;
3581         return ret;
3582 }
3583
3584
3585 int FFMPEG::ff_total_video_layers()
3586 {
3587         return vstrm_index.size();
3588 }
3589
3590 int FFMPEG::ff_total_vstreams()
3591 {
3592         return ffvideo.size();
3593 }
3594
3595 int FFMPEG::ff_video_width(int stream)
3596 {
3597         FFVideoStream *vst = ffvideo[stream];
3598         return !vst->transpose ? vst->width : vst->height;
3599 }
3600
3601 int FFMPEG::ff_video_height(int stream)
3602 {
3603         FFVideoStream *vst = ffvideo[stream];
3604         return !vst->transpose ? vst->height : vst->width;
3605 }
3606
3607 int FFMPEG::ff_set_video_width(int stream, int width)
3608 {
3609         FFVideoStream *vst = ffvideo[stream];
3610         int *vw = !vst->transpose ? &vst->width : &vst->height, w = *vw;
3611         *vw = width;
3612         return w;
3613 }
3614
3615 int FFMPEG::ff_set_video_height(int stream, int height)
3616 {
3617         FFVideoStream *vst = ffvideo[stream];
3618         int *vh = !vst->transpose ? &vst->height : &vst->width, h = *vh;
3619         *vh = height;
3620         return h;
3621 }
3622
3623 int FFMPEG::ff_coded_width(int stream)
3624 {
3625         return ffvideo[stream]->avctx->coded_width;
3626 }
3627
3628 int FFMPEG::ff_coded_height(int stream)
3629 {
3630         return ffvideo[stream]->avctx->coded_height;
3631 }
3632
3633 float FFMPEG::ff_aspect_ratio(int stream)
3634 {
3635         //return ffvideo[stream]->aspect_ratio;
3636         AVFormatContext *fmt_ctx = ffvideo[stream]->fmt_ctx;
3637         AVStream *strm = ffvideo[stream]->st;
3638         AVCodecParameters *par = ffvideo[stream]->st->codecpar;
3639         AVRational dar;
3640         AVRational sar = av_guess_sample_aspect_ratio(fmt_ctx, strm, NULL);
3641         if (sar.num) {
3642             av_reduce(&dar.num, &dar.den,
3643                       par->width  * sar.num,
3644                       par->height * sar.den,
3645                       1024*1024);
3646                       return av_q2d(dar);
3647                       }
3648         return ffvideo[stream]->aspect_ratio;
3649 }
3650
3651 const char* FFMPEG::ff_video_codec(int stream)
3652 {
3653         AVStream *st = ffvideo[stream]->st;
3654         AVCodecID id = st->codecpar->codec_id;
3655         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
3656         return desc ? desc->name : _("Unknown");
3657 }
3658
3659 int FFMPEG::ff_color_range(int stream)
3660 {
3661         return ffvideo[stream]->color_range;
3662 }
3663
3664 int FFMPEG::ff_color_space(int stream)
3665 {
3666         return ffvideo[stream]->color_space;
3667 }
3668
3669 double FFMPEG::ff_frame_rate(int stream)
3670 {
3671         return ffvideo[stream]->frame_rate;
3672 }
3673
3674 int64_t FFMPEG::ff_video_frames(int stream)
3675 {
3676         return ffvideo[stream]->length;
3677 }
3678
3679 int FFMPEG::ff_video_pid(int stream)
3680 {
3681         return ffvideo[stream]->st->id;
3682 }
3683
3684 int FFMPEG::ff_video_mpeg_color_range(int stream)
3685 {
3686         return ffvideo[stream]->st->codecpar->color_range == AVCOL_RANGE_MPEG ? 1 : 0;
3687 }
3688
3689 int FFMPEG::ff_interlace(int stream)
3690 {
3691 // https://ffmpeg.org/doxygen/trunk/structAVCodecParserContext.html
3692 /* reads from demuxer because codec frame not ready */
3693         int interlace0 = ffvideo[stream]->st->codecpar->field_order;
3694
3695         switch (interlace0)
3696         {
3697         case AV_FIELD_TT:
3698         case AV_FIELD_TB:
3699             return ILACE_MODE_TOP_FIRST;
3700         case AV_FIELD_BB:
3701         case AV_FIELD_BT:
3702             return ILACE_MODE_BOTTOM_FIRST;
3703         case AV_FIELD_PROGRESSIVE:
3704             return ILACE_MODE_NOTINTERLACED;
3705         default:
3706             return ILACE_MODE_UNDETECTED;
3707         }
3708
3709 }
3710
3711
3712
3713 int FFMPEG::ff_cpus()
3714 {
3715         return !file_base ? 1 : file_base->file->cpus;
3716 }
3717
3718 const char *FFMPEG::ff_hw_dev()
3719 {
3720         return &file_base->file->preferences->use_hw_dev[0];
3721 }
3722
3723 Preferences *FFMPEG::ff_prefs()
3724 {
3725         return !file_base ? 0 : file_base->file->preferences;
3726 }
3727
3728 double FFVideoStream::get_rotation_angle()
3729 {
3730 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
3731         size_t size = 0;
3732 #else
3733         int size = 0;
3734 #endif
3735         int *matrix = (int*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX, &size);
3736         int len = size/sizeof(*matrix);
3737         if( !matrix || len < 5 ) return 0;
3738         const double s = 1/65536.;
3739         double theta = (!matrix[0] && !matrix[3]) || (!matrix[1] && !matrix[4]) ? 0 :
3740                  atan2( s*matrix[1] / hypot(s*matrix[1], s*matrix[4]),
3741                         s*matrix[0] / hypot(s*matrix[0], s*matrix[3])) * 180/M_PI;
3742         return theta;
3743 }
3744
3745 int FFVideoStream::flip(double theta)
3746 {
3747         int ret = 0;
3748         transpose = 0;
3749         Preferences *preferences = ffmpeg->ff_prefs();
3750         if( !preferences || !preferences->auto_rotate ) return ret;
3751         double tolerance = 1;
3752         if( fabs(theta-0) < tolerance ) return  ret;
3753         if( (theta=fmod(theta, 360)) < 0 ) theta += 360;
3754         if( fabs(theta-90) < tolerance ) {
3755                 if( (ret = insert_filter("transpose", "clock")) < 0 )
3756                         return ret;
3757                 transpose = 1;
3758         }
3759         else if( fabs(theta-180) < tolerance ) {
3760                 if( (ret=insert_filter("hflip", 0)) < 0 )
3761                         return ret;
3762                 if( (ret=insert_filter("vflip", 0)) < 0 )
3763                         return ret;
3764         }
3765         else if (fabs(theta-270) < tolerance ) {
3766                 if( (ret=insert_filter("transpose", "cclock")) < 0 )
3767                         return ret;
3768                 transpose = 1;
3769         }
3770         else {
3771                 char angle[BCSTRLEN];
3772                 sprintf(angle, "%f", theta*M_PI/180.);
3773                 if( (ret=insert_filter("rotate", angle)) < 0 )
3774                         return ret;
3775         }
3776         return 1;
3777 }
3778
3779 int FFVideoStream::create_filter(const char *filter_spec)
3780 {
3781         double theta = get_rotation_angle();
3782         if( !theta && !filter_spec )
3783                 return 0;
3784         avfilter_register_all();
3785         if( filter_spec ) {
3786                 const char *sp = filter_spec;
3787                 char filter_name[BCSTRLEN], *np = filter_name;
3788                 int i = sizeof(filter_name);
3789                 while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
3790                 *np = 0;
3791                 const AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
3792                 if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_VIDEO ) {
3793                         ff_err(AVERROR(EINVAL), "FFVideoStream::create_filter: %s\n", filter_spec);
3794                         return -1;
3795                 }
3796         }
3797         AVCodecParameters *avpar = st->codecpar;
3798         int sa_num = avpar->sample_aspect_ratio.num;
3799         if( !sa_num ) sa_num = 1;
3800         int sa_den = avpar->sample_aspect_ratio.den;
3801         if( !sa_den ) sa_num = 1;
3802
3803         int ret = 0;  char args[BCTEXTLEN];
3804         AVPixelFormat pix_fmt = (AVPixelFormat)avpar->format;
3805         snprintf(args, sizeof(args),
3806                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
3807                 avpar->width, avpar->height, (int)pix_fmt,
3808                 st->time_base.num, st->time_base.den, sa_num, sa_den);
3809         if( ret >= 0 ) {
3810                 filt_ctx = 0;
3811                 ret = insert_filter("buffer", args, "in");
3812                 buffersrc_ctx = filt_ctx;
3813         }
3814         if( ret >= 0 )
3815                 ret = flip(theta);
3816         AVFilterContext *fsrc = filt_ctx;
3817         if( ret >= 0 ) {
3818                 filt_ctx = 0;
3819                 ret = insert_filter("buffersink", 0, "out");
3820                 buffersink_ctx = filt_ctx;
3821         }
3822         if( ret >= 0 ) {
3823                 ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
3824                         (uint8_t*)&pix_fmt, sizeof(pix_fmt),
3825                         AV_OPT_SEARCH_CHILDREN);
3826         }
3827         if( ret >= 0 )
3828                 ret = config_filters(filter_spec, fsrc);
3829         else
3830                 ff_err(ret, "FFVideoStream::create_filter");
3831         return ret >= 0 ? 0 : -1;
3832 }
3833
3834 int FFAudioStream::create_filter(const char *filter_spec)
3835 {
3836         if( !filter_spec )
3837                 return 0;
3838         avfilter_register_all();
3839         if( filter_spec ) {
3840                 const char *sp = filter_spec;
3841                 char filter_name[BCSTRLEN], *np = filter_name;
3842                 int i = sizeof(filter_name);
3843                 while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
3844                 *np = 0;
3845                 const AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
3846                 if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_AUDIO ) {
3847                         ff_err(AVERROR(EINVAL), "FFAudioStream::create_filter: %s\n", filter_spec);
3848                         return -1;
3849                 }
3850         }
3851         int ret = 0;  char args[BCTEXTLEN];
3852         AVCodecParameters *avpar = st->codecpar;
3853         AVSampleFormat sample_fmt = (AVSampleFormat)avpar->format;
3854         snprintf(args, sizeof(args),
3855                 "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%jx",
3856                 st->time_base.num, st->time_base.den, avpar->sample_rate,
3857                 av_get_sample_fmt_name(sample_fmt), avpar->channel_layout);
3858         if( ret >= 0 ) {
3859                 filt_ctx = 0;
3860                 ret = insert_filter("abuffer", args, "in");
3861                 buffersrc_ctx = filt_ctx;
3862         }
3863         AVFilterContext *fsrc = filt_ctx;
3864         if( ret >= 0 ) {
3865                 filt_ctx = 0;
3866                 ret = insert_filter("abuffersink", 0, "out");
3867                 buffersink_ctx = filt_ctx;
3868         }
3869         if( ret >= 0 )
3870                 ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
3871                         (uint8_t*)&sample_fmt, sizeof(sample_fmt),
3872                         AV_OPT_SEARCH_CHILDREN);
3873         if( ret >= 0 )
3874                 ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
3875                         (uint8_t*)&avpar->channel_layout,
3876                         sizeof(avpar->channel_layout), AV_OPT_SEARCH_CHILDREN);
3877         if( ret >= 0 )
3878                 ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
3879                         (uint8_t*)&sample_rate, sizeof(sample_rate),
3880                         AV_OPT_SEARCH_CHILDREN);
3881         if( ret >= 0 )
3882                 ret = config_filters(filter_spec, fsrc);
3883         else
3884                 ff_err(ret, "FFAudioStream::create_filter");
3885         return ret >= 0 ? 0 : -1;
3886 }
3887
3888 int FFStream::insert_filter(const char *name, const char *arg, const char *inst_name)
3889 {
3890         const AVFilter *filter = avfilter_get_by_name(name);
3891         if( !filter ) return -1;
3892         char filt_inst[BCSTRLEN];
3893         if( !inst_name ) {
3894                 snprintf(filt_inst, sizeof(filt_inst), "%s_%d", name, ++filt_id);
3895                 inst_name = filt_inst;
3896         }
3897         if( !filter_graph )
3898                 filter_graph = avfilter_graph_alloc();
3899         AVFilterContext *fctx = 0;
3900         int ret = avfilter_graph_create_filter(&fctx,
3901                 filter, inst_name, arg, NULL, filter_graph);
3902         if( ret >= 0 && filt_ctx )
3903                 ret = avfilter_link(filt_ctx, 0, fctx, 0);
3904         if( ret >= 0 )
3905                 filt_ctx = fctx;
3906         else
3907                 avfilter_free(fctx);
3908         return ret;
3909 }
3910
3911 int FFStream::config_filters(const char *filter_spec, AVFilterContext *fsrc)
3912 {
3913         int ret = 0;
3914         AVFilterContext *fsink = buffersink_ctx;
3915         if( filter_spec ) {
3916                 /* Endpoints for the filter graph. */
3917                 AVFilterInOut *outputs = avfilter_inout_alloc();
3918                 AVFilterInOut *inputs = avfilter_inout_alloc();
3919                 if( !inputs || !outputs ) ret = -1;
3920                 if( ret >= 0 ) {
3921                         outputs->filter_ctx = fsrc;
3922                         outputs->pad_idx = 0;
3923                         outputs->next = 0;
3924                         if( !(outputs->name = av_strdup(fsrc->name)) ) ret = -1;
3925                 }
3926                 if( ret >= 0 ) {
3927                         inputs->filter_ctx = fsink;
3928                         inputs->pad_idx = 0;
3929                         inputs->next = 0;
3930                         if( !(inputs->name = av_strdup(fsink->name)) ) ret = -1;
3931                 }
3932                 if( ret >= 0 ) {
3933                         int len = strlen(fsrc->name)+2 + strlen(filter_spec) + 1;
3934                         char spec[len];  sprintf(spec, "[%s]%s", fsrc->name, filter_spec);
3935                         ret = avfilter_graph_parse_ptr(filter_graph, spec,
3936                                 &inputs, &outputs, NULL);
3937                 }
3938                 avfilter_inout_free(&inputs);
3939                 avfilter_inout_free(&outputs);
3940         }
3941         else
3942                 ret = avfilter_link(fsrc, 0, fsink, 0);
3943         if( ret >= 0 )
3944                 ret = avfilter_graph_config(filter_graph, NULL);
3945         if( ret < 0 ) {
3946                 ff_err(ret, "FFStream::create_filter");
3947                 avfilter_graph_free(&filter_graph);
3948                 filter_graph = 0;
3949         }
3950         return ret;
3951 }
3952
3953
3954 AVCodecContext *FFMPEG::activate_decoder(AVStream *st)
3955 {
3956         AVDictionary *copts = 0;
3957         av_dict_copy(&copts, opts, 0);
3958         AVCodecID codec_id = st->codecpar->codec_id;
3959 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
3960         const AVCodec *decoder = 0;
3961 #else
3962         AVCodec *decoder = 0;
3963 #endif
3964         switch( st->codecpar->codec_type ) {
3965         case AVMEDIA_TYPE_VIDEO:
3966                 if( opt_video_decoder )
3967                         decoder = avcodec_find_decoder_by_name(opt_video_decoder);
3968                 else
3969                         video_codec_remaps.update(codec_id, decoder);
3970                 break;
3971         case AVMEDIA_TYPE_AUDIO:
3972                 if( opt_audio_decoder )
3973                         decoder = avcodec_find_decoder_by_name(opt_audio_decoder);
3974                 else
3975                         audio_codec_remaps.update(codec_id, decoder);
3976                 break;
3977         default:
3978                 return 0;
3979         }
3980         if( !decoder && !(decoder = avcodec_find_decoder(codec_id)) ) {
3981                 eprintf(_("cant find decoder codec %d\n"), (int)codec_id);
3982                 return 0;
3983         }
3984         AVCodecContext *avctx = avcodec_alloc_context3(decoder);
3985         if( !avctx ) {
3986                 eprintf(_("cant allocate codec context\n"));
3987                 return 0;
3988         }
3989         avcodec_parameters_to_context(avctx, st->codecpar);
3990         if( !av_dict_get(copts, "threads", NULL, 0) )
3991                 avctx->thread_count = ff_cpus();
3992         int ret = avcodec_open2(avctx, decoder, &copts);
3993         av_dict_free(&copts);
3994         if( ret < 0 ) {
3995                 avcodec_free_context(&avctx);
3996                 avctx = 0;
3997         }
3998         return avctx;
3999 }
4000
4001 int FFMPEG::scan(IndexState *index_state, int64_t *scan_position, int *canceled)
4002 {
4003         AVPacket pkt;
4004         av_init_packet(&pkt);
4005         AVFrame *frame = av_frame_alloc();
4006         if( !frame ) {
4007                 fprintf(stderr,"FFMPEG::scan: ");
4008                 fprintf(stderr,_("av_frame_alloc failed\n"));
4009                 fprintf(stderr,"FFMPEG::scan:file=%s\n", file_base->asset->path);
4010                 return -1;
4011         }
4012
4013         index_state->add_video_markers(ffvideo.size());
4014         index_state->add_audio_markers(ffaudio.size());
4015
4016         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
4017                 AVStream *st = fmt_ctx->streams[i];
4018                 AVCodecContext *avctx = activate_decoder(st);
4019                 if( avctx ) {
4020                         AVCodecParameters *avpar = st->codecpar;
4021                         switch( avpar->codec_type ) {
4022                         case AVMEDIA_TYPE_VIDEO: {
4023                                 int vidx = ffvideo.size();
4024                                 while( --vidx>=0 && ffvideo[vidx]->fidx != i );
4025                                 if( vidx < 0 ) break;
4026                                 ffvideo[vidx]->avctx = avctx;
4027                                 continue; }
4028                         case AVMEDIA_TYPE_AUDIO: {
4029                                 int aidx = ffaudio.size();
4030                                 while( --aidx>=0 && ffaudio[aidx]->fidx != i );
4031                                 if( aidx < 0 ) break;
4032                                 ffaudio[aidx]->avctx = avctx;
4033                                 continue; }
4034                         default: break;
4035                         }
4036                 }
4037                 fprintf(stderr,"FFMPEG::scan: ");
4038                 fprintf(stderr,_("codec open failed\n"));
4039                 fprintf(stderr,"FFMPEG::scan:file=%s\n", file_base->asset->path);
4040                 avcodec_free_context(&avctx);
4041         }
4042
4043         decode_activate();
4044         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
4045                 AVStream *st = fmt_ctx->streams[i];
4046                 AVCodecParameters *avpar = st->codecpar;
4047                 if( avpar->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
4048                 int64_t tstmp = st->start_time;
4049                 if( tstmp == AV_NOPTS_VALUE ) continue;
4050                 int aidx = ffaudio.size();
4051                 while( --aidx>=0 && ffaudio[aidx]->fidx != i );
4052                 if( aidx < 0 ) continue;
4053                 FFAudioStream *aud = ffaudio[aidx];
4054                 tstmp -= aud->nudge;
4055                 double secs = to_secs(tstmp, st->time_base);
4056                 aud->curr_pos = secs * aud->sample_rate + 0.5;
4057         }
4058
4059         int errs = 0;
4060         for( int64_t count=0; !*canceled; ++count ) {
4061                 av_packet_unref(&pkt);
4062                 pkt.data = 0; pkt.size = 0;
4063
4064                 int ret = av_read_frame(fmt_ctx, &pkt);
4065                 if( ret < 0 ) {
4066                         if( ret == AVERROR_EOF ) break;
4067                         if( ++errs > 100 ) {
4068                                 ff_err(ret,_("over 100 read_frame errs\n"));
4069                                 break;
4070                         }
4071                         continue;
4072                 }
4073                 if( !pkt.data ) continue;
4074                 int i = pkt.stream_index;
4075                 if( i < 0 || i >= (int)fmt_ctx->nb_streams ) continue;
4076                 AVStream *st = fmt_ctx->streams[i];
4077                 if( pkt.pos > *scan_position ) *scan_position = pkt.pos;
4078
4079                 AVCodecParameters *avpar = st->codecpar;
4080                 switch( avpar->codec_type ) {
4081                 case AVMEDIA_TYPE_VIDEO: {
4082                         int vidx = ffvideo.size();
4083                         while( --vidx>=0 && ffvideo[vidx]->fidx != i );
4084                         if( vidx < 0 ) break;
4085                         FFVideoStream *vid = ffvideo[vidx];
4086                         if( !vid->avctx ) break;
4087                         int64_t tstmp = pkt.pts;
4088                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.dts;
4089                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
4090                                 if( vid->nudge != AV_NOPTS_VALUE ) tstmp -= vid->nudge;
4091                                 double secs = to_secs(tstmp, st->time_base);
4092                                 int64_t frm = secs * vid->frame_rate + 0.5;
4093                                 if( frm < 0 ) frm = 0;
4094                                 index_state->put_video_mark(vidx, frm, pkt.pos);
4095                         }
4096 #if 0
4097                         ret = avcodec_send_packet(vid->avctx, pkt);
4098                         if( ret < 0 ) break;
4099                         while( (ret=vid->decode_frame(frame)) > 0 ) {}
4100 #endif
4101                         break; }
4102                 case AVMEDIA_TYPE_AUDIO: {
4103                         int aidx = ffaudio.size();
4104                         while( --aidx>=0 && ffaudio[aidx]->fidx != i );
4105                         if( aidx < 0 ) break;
4106                         FFAudioStream *aud = ffaudio[aidx];
4107                         if( !aud->avctx ) break;
4108                         int64_t tstmp = pkt.pts;
4109                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.dts;
4110                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
4111                                 if( aud->nudge != AV_NOPTS_VALUE ) tstmp -= aud->nudge;
4112                                 double secs = to_secs(tstmp, st->time_base);
4113                                 int64_t sample = secs * aud->sample_rate + 0.5;
4114                                 if( sample >= 0 )
4115                                         index_state->put_audio_mark(aidx, sample, pkt.pos);
4116                         }
4117                         ret = avcodec_send_packet(aud->avctx, &pkt);
4118                         if( ret < 0 ) break;
4119                         int ch = aud->channel0,  nch = aud->channels;
4120                         int64_t pos = index_state->pos(ch);
4121                         if( pos != aud->curr_pos ) {
4122 if( abs(pos-aud->curr_pos) > 1 )
4123 printf("audio%d pad %jd %jd (%jd)\n", aud->idx, pos, aud->curr_pos, pos-aud->curr_pos);
4124                                 index_state->pad_data(ch, nch, aud->curr_pos);
4125                         }
4126                         while( (ret=aud->decode_frame(frame)) > 0 ) {
4127                                 //if( frame->channels != nch ) break;
4128                                 aud->init_swr(frame->channels, frame->format, frame->sample_rate);
4129                                 float *samples;
4130                                 int len = aud->get_samples(samples,
4131                                          &frame->extended_data[0], frame->nb_samples);
4132                                 pos = aud->curr_pos;
4133                                 if( (aud->curr_pos += len) >= 0 ) {
4134                                         if( pos < 0 ) {
4135                                                 samples += -pos * nch;
4136                                                 len = aud->curr_pos;
4137                                         }
4138                                         for( int i=0; i<nch; ++i )
4139                                                 index_state->put_data(ch+i,nch,samples+i,len);
4140                                 }
4141                         }
4142                         break; }
4143                 default: break;
4144                 }
4145         }
4146         av_frame_free(&frame);
4147         return 0;
4148 }
4149
4150 void FFStream::load_markers(IndexMarks &marks, double rate)
4151 {
4152         int in = 0;
4153         int64_t sz = marks.size();
4154         int max_entries = fmt_ctx->max_index_size / sizeof(AVIndexEntry) - 1;
4155 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
4156         int nb_ent = avformat_index_get_entries_count(st);
4157 #endif
4158 #if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(58,134,100)
4159         int nb_ent = st->nb_index_entries;
4160 #endif
4161 // some formats already have an index
4162         if( nb_ent > 0 ) {
4163 #if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(58,134,100)
4164                 AVIndexEntry *ep = &st->index_entries[nb_ent-1];
4165 #endif
4166 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(59,16,100)
4167                 const AVIndexEntry *ep = avformat_index_get_entry(st, nb_ent-1);
4168 #endif
4169                 int64_t tstmp = ep->timestamp;
4170                 if( nudge != AV_NOPTS_VALUE ) tstmp -= nudge;
4171                 double secs = ffmpeg->to_secs(tstmp, st->time_base);
4172                 int64_t no = secs * rate;
4173                 while( in < sz && marks[in].no <= no ) ++in;
4174         }
4175         int64_t len = sz - in;
4176         int64_t count = max_entries - nb_ent;
4177         if( count > len ) count = len;
4178         for( int i=0; i<count; ++i ) {
4179                 int k = in + i * len / count;
4180                 int64_t no = marks[k].no, pos = marks[k].pos;
4181                 double secs = (double)no / rate;
4182                 int64_t tstmp = secs * st->time_base.den / st->time_base.num;
4183                 if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
4184                 av_add_index_entry(st, pos, tstmp, 0, 0, AVINDEX_KEYFRAME);
4185         }
4186 }
4187
4188
4189 /*
4190  * 1) if the format context has a timecode
4191  *   return fmt_ctx->timecode - 0
4192  * 2) if the layer/channel has a timecode
4193  *   return st->timecode - (start_time-nudge)
4194  * 3) find the 1st program with stream, find 1st program video stream,
4195  *   if video stream has a timecode, return st->timecode - (start_time-nudge)
4196  * 4) find timecode in any stream, return st->timecode
4197  * 5) read 100 packets, save ofs=pkt.pts*st->time_base - st->nudge:
4198  *   decode frame for video stream of 1st program
4199  *   if frame->timecode has a timecode, return frame->timecode - ofs
4200  *   if side_data has gop timecode, return gop->timecode - ofs
4201  *   if side_data has smpte timecode, return smpte->timecode - ofs
4202  * 6) if the filename/url scans *date_time.ext, return date_time
4203  * 7) if stat works on the filename/url, return mtime
4204  * 8) return -1 failure
4205 */
4206 double FFMPEG::get_initial_timecode(int data_type, int channel, double frame_rate)
4207 {
4208         AVRational rate = check_frame_rate(0, frame_rate);
4209         if( !rate.num ) return -1;
4210 // format context timecode
4211         AVDictionaryEntry *tc = av_dict_get(fmt_ctx->metadata, "timecode", 0, 0);
4212         if( tc ) return ff_get_timecode(tc->value, rate, 0);
4213 // stream timecode
4214         if( open_decoder() ) return -1;
4215         AVStream *st = 0;
4216         int64_t nudge = 0;
4217         int codec_type = -1, fidx = -1;
4218         switch( data_type ) {
4219         case TRACK_AUDIO: {
4220                 codec_type = AVMEDIA_TYPE_AUDIO;
4221                 int aidx = astrm_index[channel].st_idx;
4222                 FFAudioStream *aud = ffaudio[aidx];
4223                 fidx = aud->fidx;
4224                 nudge = aud->nudge;
4225                 st = aud->st;
4226                 AVDictionaryEntry *tref = av_dict_get(fmt_ctx->metadata, "time_reference", 0, 0);
4227                 if( tref && aud && aud->sample_rate )
4228                         return strtod(tref->value, 0) / aud->sample_rate;
4229                 break; }
4230         case TRACK_VIDEO: {
4231                 codec_type = AVMEDIA_TYPE_VIDEO;
4232                 int vidx = vstrm_index[channel].st_idx;
4233                 FFVideoStream *vid = ffvideo[vidx];
4234                 fidx = vid->fidx;
4235                 nudge = vid->nudge;
4236                 st = vid->st;
4237                 break; }
4238         }
4239         if( codec_type < 0 ) return -1;
4240         if( st )
4241                 tc = av_dict_get(st->metadata, "timecode", 0, 0);
4242         if( !tc ) {
4243                 st = 0;
4244 // find first program which references this stream
4245                 int pidx = -1;
4246                 for( int i=0, m=fmt_ctx->nb_programs; pidx<0 && i<m; ++i ) {
4247                         AVProgram *pgrm = fmt_ctx->programs[i];
4248                         for( int j=0, n=pgrm->nb_stream_indexes; j<n; ++j ) {
4249                                 int st_idx = pgrm->stream_index[j];
4250                                 if( st_idx == fidx ) { pidx = i;  break; }
4251                         }
4252                 }
4253                 fidx = -1;
4254                 if( pidx >= 0 ) {
4255                         AVProgram *pgrm = fmt_ctx->programs[pidx];
4256                         for( int j=0, n=pgrm->nb_stream_indexes; j<n; ++j ) {
4257                                 int st_idx = pgrm->stream_index[j];
4258                                 AVStream *tst = fmt_ctx->streams[st_idx];
4259                                 if( !tst ) continue;
4260                                 if( tst->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
4261                                         st = tst;  fidx = st_idx;
4262                                         break;
4263                                 }
4264                         }
4265                 }
4266                 else {
4267                         for( int i=0, n=fmt_ctx->nb_streams; i<n; ++i ) {
4268                                 AVStream *tst = fmt_ctx->streams[i];
4269                                 if( !tst ) continue;
4270                                 if( tst->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
4271                                         st = tst;  fidx = i;
4272                                         break;
4273                                 }
4274                         }
4275                 }
4276                 if( st )
4277                         tc = av_dict_get(st->metadata, "timecode", 0, 0);
4278         }
4279
4280         if( !tc ) {
4281                 // any timecode, includes -data- streams
4282                 for( int i=0, n=fmt_ctx->nb_streams; i<n; ++i ) {
4283                         AVStream *tst = fmt_ctx->streams[i];
4284                         if( !tst ) continue;
4285                         if( (tc = av_dict_get(tst->metadata, "timecode", 0, 0)) ) {
4286                                 st = tst;  fidx = i;
4287                                 break;
4288                         }
4289                 }
4290         }
4291
4292         if( st && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
4293                 if( st->r_frame_rate.num && st->r_frame_rate.den )
4294                         rate = st->r_frame_rate;
4295                 nudge = st->start_time;
4296                 for( int i=0; i<ffvideo.size(); ++i ) {
4297                         if( ffvideo[i]->st == st ) {
4298                                 nudge = ffvideo[i]->nudge;
4299                                 break;
4300                         }
4301                 }
4302         }
4303
4304         if( tc ) { // return timecode
4305                 double secs = st->start_time == AV_NOPTS_VALUE ? 0 :
4306                         to_secs(st->start_time - nudge, st->time_base);
4307                 return ff_get_timecode(tc->value, rate, secs);
4308         }
4309
4310         if( !st || fidx < 0 ) return -1;
4311
4312         decode_activate();
4313         AVCodecContext *av_ctx = activate_decoder(st);
4314         if( !av_ctx ) {
4315                 fprintf(stderr,"activate_decoder failed\n");
4316                 return -1;
4317         }
4318         avCodecContext avctx(av_ctx); // auto deletes
4319         if( avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
4320             avctx->framerate.num && avctx->framerate.den )
4321                 rate = avctx->framerate;
4322
4323         avPacket pkt;   // auto deletes
4324         avFrame frame;  // auto deletes
4325         if( !frame ) {
4326                 fprintf(stderr,"av_frame_alloc failed\n");
4327                 return -1;
4328         }
4329         int errs = 0;
4330         int64_t max_packets = 100;
4331         char tcbuf[AV_TIMECODE_STR_SIZE];
4332
4333         for( int64_t count=0; count<max_packets; ++count ) {
4334                 av_packet_unref(pkt);
4335                 pkt->data = 0; pkt->size = 0;
4336
4337                 int ret = av_read_frame(fmt_ctx, pkt);
4338                 if( ret < 0 ) {
4339                         if( ret == AVERROR_EOF ) break;
4340                         if( ++errs > 100 ) {
4341                                 fprintf(stderr,"over 100 read_frame errs\n");
4342                                 break;
4343                         }
4344                         continue;
4345                 }
4346                 if( !pkt->data ) continue;
4347                 int i = pkt->stream_index;
4348                 if( i != fidx ) continue;
4349                 int64_t tstmp = pkt->pts;
4350                 if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt->dts;
4351                 double secs = to_secs(tstmp - nudge, st->time_base);
4352                 ret = avcodec_send_packet(avctx, pkt);
4353                 if( ret < 0 ) return -1;
4354
4355                 while( (ret = avcodec_receive_frame(avctx, frame)) >= 0 ) {
4356                         if( (tc = av_dict_get(frame->metadata, "timecode", 0, 0)) )
4357                                 return ff_get_timecode(tc->value, rate, secs);
4358                         int k = frame->nb_side_data;
4359                         AVFrameSideData *side_data = 0;
4360                         while( --k >= 0 ) {
4361                                 side_data = frame->side_data[k];
4362                                 switch( side_data->type ) {
4363                                 case AV_FRAME_DATA_GOP_TIMECODE: {
4364                                         int64_t data = *(int64_t *)side_data->data;
4365                                         int sz = sizeof(data);
4366                                         if( side_data->size >= sz ) {
4367                                                 av_timecode_make_mpeg_tc_string(tcbuf, data);
4368                                                 return ff_get_timecode(tcbuf, rate, secs);
4369                                         }
4370                                         break; }
4371                                 case AV_FRAME_DATA_S12M_TIMECODE: {
4372                                         uint32_t *data = (uint32_t *)side_data->data;
4373                                         int n = data[0], sz = (n+1)*sizeof(*data);
4374                                         if( side_data->size >= sz ) {
4375                                                 av_timecode_make_smpte_tc_string(tcbuf, data[n], 0);
4376                                                 return ff_get_timecode(tcbuf, rate, secs);
4377                                         }
4378                                         break; }
4379                                 default:
4380                                         break;
4381                                 }
4382                         }
4383                 }
4384         }
4385         char *path = fmt_ctx->url;
4386         char *bp = strrchr(path, '/');
4387         if( !bp ) bp = path; else ++bp;
4388         char *cp = strrchr(bp, '.');
4389         if( cp && (cp-=(8+1+6)) >= bp ) {
4390                 char sep[BCSTRLEN];
4391                 int year,mon,day, hour,min,sec, frm=0;
4392                 if( sscanf(cp,"%4d%2d%2d%[_-]%2d%2d%2d",
4393                                 &year,&mon,&day, sep, &hour,&min,&sec) == 7 ) {
4394                         int ch = sep[0];
4395                         // year>=1970,mon=1..12,day=1..31, hour=0..23,min=0..59,sec=0..60
4396                         if( (ch=='_' || ch=='-' ) &&
4397                             year >= 1970 && mon>=1 && mon<=12 && day>=1 && day<=31 &&
4398                             hour>=0 && hour<24 && min>=0 && min<60 && sec>=0 && sec<=60 ) {
4399                                 sprintf(tcbuf,"%d:%02d:%02d:%02d", hour,min,sec, frm);
4400                                 return ff_get_timecode(tcbuf, rate, 0);
4401                         }
4402                 }
4403         }
4404         struct stat tst;
4405         if( stat(path, &tst) >= 0 ) {
4406                 time_t t = (time_t)tst.st_mtim.tv_sec;
4407                 struct tm tm;
4408                 localtime_r(&t, &tm);
4409                 int64_t us = tst.st_mtim.tv_nsec / 1000;
4410                 int frm = us/1000000. * frame_rate;
4411                 sprintf(tcbuf,"%d:%02d:%02d:%02d", tm.tm_hour, tm.tm_min, tm.tm_sec, frm);
4412                 return ff_get_timecode(tcbuf, rate, 0);
4413         }
4414         return -1;
4415 }
4416
4417 double FFMPEG::ff_get_timecode(char *str, AVRational rate, double pos)
4418 {
4419         AVTimecode tc;
4420         if( av_timecode_init_from_string(&tc, rate, str, fmt_ctx) )
4421                 return -1;
4422         double secs = (double)tc.start / tc.fps - pos;
4423         if( secs < 0 ) secs = 0;
4424         return secs;
4425 }
4426
4427 double FFMPEG::get_timecode(const char *path, int data_type, int channel, double rate)
4428 {
4429         FFMPEG ffmpeg(0);
4430         if( ffmpeg.init_decoder(path) ) return -1;
4431         return ffmpeg.get_initial_timecode(data_type, channel, rate);
4432 }
4433