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 #include "libdv.h"
  33 #include "libmjpeg.h"
  34 #include "mainerror.h"
  35 #include "mwindow.h"
  36 #include "preferences.h"
  37 #include "vframe.h"
  38
  39 #ifdef FFMPEG3
  40 #define url filename
  41 #else
  42 #define av_register_all(s)
  43 #define avfilter_register_all(s)
  44 #endif
  45
  46 #define VIDEO_INBUF_SIZE 0x10000
  47 #define AUDIO_INBUF_SIZE 0x10000
  48 #define VIDEO_REFILL_THRESH 0
  49 #define AUDIO_REFILL_THRESH 0x1000
  50 #define AUDIO_MIN_FRAME_SZ 128
  51
  52 #define FF_ESTM_TIMES 0x0001
  53 #define FF_BAD_TIMES  0x0002
  54
  55 Mutex FFMPEG::fflock("FFMPEG::fflock");
  56
  57 static void ff_err(int ret, const char *fmt, ...)
  58 {
  59         char msg[BCTEXTLEN];
  60         va_list ap;
  61         va_start(ap, fmt);
  62         vsnprintf(msg, sizeof(msg), fmt, ap);
  63         va_end(ap);
  64         char errmsg[BCSTRLEN];
  65         av_strerror(ret, errmsg, sizeof(errmsg));
  66         fprintf(stderr,_("%s  err: %s\n"),msg, errmsg);
  67 }
  68
  69 void FFPacket::init()
  70 {
  71         av_init_packet(&pkt);
  72         pkt.data = 0; pkt.size = 0;
  73 }
  74 void FFPacket::finit()
  75 {
  76         av_packet_unref(&pkt);
  77 }
  78
  79 FFrame::FFrame(FFStream *fst)
  80 {
  81         this->fst = fst;
  82         frm = av_frame_alloc();
  83         init = fst->init_frame(frm);
  84 }
  85
  86 FFrame::~FFrame()
  87 {
  88         av_frame_free(&frm);
  89 }
  90
  91 void FFrame::queue(int64_t pos)
  92 {
  93         position = pos;
  94         fst->queue(this);
  95 }
  96
  97 void FFrame::dequeue()
  98 {
  99         fst->dequeue(this);
 100 }
 101
 102 void FFrame::set_hw_frame(AVFrame *frame)
 103 {
 104         av_frame_free(&frm);
 105         frm = frame;
 106 }
 107
 108 int FFAudioStream::read(float *fp, long len)
 109 {
 110         long n = len * nch;
 111         float *op = outp;
 112         while( n > 0 ) {
 113                 int k = lmt - op;
 114                 if( k > n ) k = n;
 115                 n -= k;
 116                 while( --k >= 0 ) *fp++ = *op++;
 117                 if( op >= lmt ) op = bfr;
 118         }
 119         return len;
 120 }
 121
 122 void FFAudioStream::realloc(long nsz, int nch, long len)
 123 {
 124         long bsz = nsz * nch;
 125         float *np = new float[bsz];
 126         inp = np + read(np, len) * nch;
 127         outp = np;
 128         lmt = np + bsz;
 129         this->nch = nch;
 130         sz = nsz;
 131         delete [] bfr;  bfr = np;
 132 }
 133
 134 void FFAudioStream::realloc(long nsz, int nch)
 135 {
 136         if( nsz > sz || this->nch != nch ) {
 137                 long len = this->nch != nch ? 0 : hpos;
 138                 if( len > sz ) len = sz;
 139                 iseek(len);
 140                 realloc(nsz, nch, len);
 141         }
 142 }
 143
 144 void FFAudioStream::reserve(long nsz, int nch)
 145 {
 146         long len = (inp - outp) / nch;
 147         nsz += len;
 148         if( nsz > sz || this->nch != nch ) {
 149                 if( this->nch != nch ) len = 0;
 150                 realloc(nsz, nch, len);
 151                 return;
 152         }
 153         if( (len*=nch) > 0 && bfr != outp )
 154                 memmove(bfr, outp, len*sizeof(*bfr));
 155         outp = bfr;
 156         inp = bfr + len;
 157 }
 158
 159 long FFAudioStream::used()
 160 {
 161         long len = inp>=outp ? inp-outp : inp-bfr + lmt-outp;
 162         return len / nch;
 163 }
 164 long FFAudioStream::avail()
 165 {
 166         float *in1 = inp+1;
 167         if( in1 >= lmt ) in1 = bfr;
 168         long len = outp >= in1 ? outp-in1 : outp-bfr + lmt-in1;
 169         return len / nch;
 170 }
 171 void FFAudioStream::reset_history()
 172 {
 173         inp = outp = bfr;
 174         hpos = 0;
 175         memset(bfr, 0, lmt-bfr);
 176 }
 177
 178 void FFAudioStream::iseek(int64_t ofs)
 179 {
 180         if( ofs > hpos ) ofs = hpos;
 181         if( ofs > sz ) ofs = sz;
 182         outp = inp - ofs*nch;
 183         if( outp < bfr ) outp += sz*nch;
 184 }
 185
 186 float *FFAudioStream::get_outp(int ofs)
 187 {
 188         float *ret = outp;
 189         outp += ofs*nch;
 190         return ret;
 191 }
 192
 193 int64_t FFAudioStream::put_inp(int ofs)
 194 {
 195         inp += ofs*nch;
 196         return (inp-outp) / nch;
 197 }
 198
 199 int FFAudioStream::write(const float *fp, long len)
 200 {
 201         long n = len * nch;
 202         float *ip = inp;
 203         while( n > 0 ) {
 204                 int k = lmt - ip;
 205                 if( k > n ) k = n;
 206                 n -= k;
 207                 while( --k >= 0 ) *ip++ = *fp++;
 208                 if( ip >= lmt ) ip = bfr;
 209         }
 210         inp = ip;
 211         hpos += len;
 212         return len;
 213 }
 214
 215 int FFAudioStream::zero(long len)
 216 {
 217         long n = len * nch;
 218         float *ip = inp;
 219         while( n > 0 ) {
 220                 int k = lmt - ip;
 221                 if( k > n ) k = n;
 222                 n -= k;
 223                 while( --k >= 0 ) *ip++ = 0;
 224                 if( ip >= lmt ) ip = bfr;
 225         }
 226         inp = ip;
 227         hpos += len;
 228         return len;
 229 }
 230
 231 // does not advance outp
 232 int FFAudioStream::read(double *dp, long len, int ch)
 233 {
 234         long n = len;
 235         float *op = outp + ch;
 236         float *lmt1 = lmt + nch-1;
 237         while( n > 0 ) {
 238                 int k = (lmt1 - op) / nch;
 239                 if( k > n ) k = n;
 240                 n -= k;
 241                 while( --k >= 0 ) { *dp++ = *op;  op += nch; }
 242                 if( op >= lmt ) op -= sz*nch;
 243         }
 244         return len;
 245 }
 246
 247 // load linear buffer, no wrapping allowed, does not advance inp
 248 int FFAudioStream::write(const double *dp, long len, int ch)
 249 {
 250         long n = len;
 251         float *ip = inp + ch;
 252         while( --n >= 0 ) { *ip = *dp++;  ip += nch; }
 253         return len;
 254 }
 255
 256
 257 FFStream::FFStream(FFMPEG *ffmpeg, AVStream *st, int fidx)
 258 {
 259         this->ffmpeg = ffmpeg;
 260         this->st = st;
 261         this->fidx = fidx;
 262         frm_lock = new Mutex("FFStream::frm_lock");
 263         fmt_ctx = 0;
 264         avctx = 0;
 265         filter_graph = 0;
 266         filt_ctx = 0;
 267         filt_id = 0;
 268         buffersrc_ctx = 0;
 269         buffersink_ctx = 0;
 270         frm_count = 0;
 271         nudge = AV_NOPTS_VALUE;
 272         seek_pos = curr_pos = 0;
 273         seeking = 0; seeked = 1;
 274         eof = 0;
 275         reading = writing = 0;
 276         hw_pixfmt = AV_PIX_FMT_NONE;
 277         hw_device_ctx = 0;
 278         flushed = 0;
 279         need_packet = 1;
 280         frame = fframe = 0;
 281         probe_frame = 0;
 282         bsfc = 0;
 283         stats_fp = 0;
 284         stats_filename = 0;
 285         stats_in = 0;
 286         pass = 0;
 287 }
 288
 289 FFStream::~FFStream()
 290 {
 291         frm_lock->lock("FFStream::~FFStream");
 292         if( reading > 0 || writing > 0 ) avcodec_close(avctx);
 293         if( avctx ) avcodec_free_context(&avctx);
 294         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
 295         if( hw_device_ctx ) av_buffer_unref(&hw_device_ctx);
 296         if( bsfc ) av_bsf_free(&bsfc);
 297         while( frms.first ) frms.remove(frms.first);
 298         if( filter_graph ) avfilter_graph_free(&filter_graph);
 299         if( frame ) av_frame_free(&frame);
 300         if( fframe ) av_frame_free(&fframe);
 301         if( probe_frame ) av_frame_free(&probe_frame);
 302         frm_lock->unlock();
 303         delete frm_lock;
 304         if( stats_fp ) fclose(stats_fp);
 305         if( stats_in ) av_freep(&stats_in);
 306         delete [] stats_filename;
 307 }
 308
 309 void FFStream::ff_lock(const char *cp)
 310 {
 311         FFMPEG::fflock.lock(cp);
 312 }
 313
 314 void FFStream::ff_unlock()
 315 {
 316         FFMPEG::fflock.unlock();
 317 }
 318
 319 void FFStream::queue(FFrame *frm)
 320 {
 321         frm_lock->lock("FFStream::queue");
 322         frms.append(frm);
 323         ++frm_count;
 324         frm_lock->unlock();
 325         ffmpeg->mux_lock->unlock();
 326 }
 327
 328 void FFStream::dequeue(FFrame *frm)
 329 {
 330         frm_lock->lock("FFStream::dequeue");
 331         --frm_count;
 332         frms.remove_pointer(frm);
 333         frm_lock->unlock();
 334 }
 335
 336 int FFStream::encode_activate()
 337 {
 338         if( writing < 0 )
 339                 writing = ffmpeg->encode_activate();
 340         return writing;
 341 }
 342
 343 // this is a global parameter that really should be in the context
 344 static AVPixelFormat hw_pix_fmt = AV_PIX_FMT_NONE; // protected by ff_lock
 345
 346 // goofy maneuver to attach a hw_format to an av_context
 347 #define GET_HW_PIXFMT(fn, fmt) \
 348 static AVPixelFormat get_hw_##fn(AVCodecContext *ctx, const enum AVPixelFormat *pix_fmts) { \
 349         return fmt; \
 350 }
 351 GET_HW_PIXFMT(vaapi, AV_PIX_FMT_VAAPI)
 352 GET_HW_PIXFMT(vdpau, AV_PIX_FMT_VDPAU)
 353 GET_HW_PIXFMT(cuda,  AV_PIX_FMT_CUDA)
 354 GET_HW_PIXFMT(nv12,  AV_PIX_FMT_NV12)
 355
 356 static enum AVPixelFormat get_hw_format(AVCodecContext *ctx,
 357                         const enum AVPixelFormat *pix_fmts)
 358 {
 359         for( const enum AVPixelFormat *p=pix_fmts; *p!=AV_PIX_FMT_NONE; ++p ) {
 360                 if( *p != hw_pix_fmt ) continue;
 361                 switch( *p ) {
 362                 case AV_PIX_FMT_VAAPI: ctx->get_format = get_hw_vaapi; return *p;
 363                 case AV_PIX_FMT_VDPAU: ctx->get_format = get_hw_vdpau; return *p;
 364                 case AV_PIX_FMT_CUDA:  ctx->get_format = get_hw_cuda;  return *p;
 365                 case AV_PIX_FMT_NV12:  ctx->get_format = get_hw_nv12;  return *p;
 366                 default:
 367                         fprintf(stderr, "Unknown HW surface format: %s\n",
 368                                 av_get_pix_fmt_name(*p));
 369                         continue;
 370                 }
 371         }
 372         fprintf(stderr, "Failed to get HW surface format.\n");
 373         return hw_pix_fmt = AV_PIX_FMT_NONE;
 374 }
 375
 376
 377 AVHWDeviceType FFStream::decode_hw_activate()
 378 {
 379         return AV_HWDEVICE_TYPE_NONE;
 380 }
 381
 382 int FFStream::decode_hw_format(AVCodec *decoder, AVHWDeviceType type)
 383 {
 384         return 0;
 385 }
 386
 387 int FFStream::decode_activate()
 388 {
 389         if( reading < 0 && (reading=ffmpeg->decode_activate()) > 0 ) {
 390                 ff_lock("FFStream::decode_activate");
 391                 reading = 0;
 392                 AVDictionary *copts = 0;
 393                 av_dict_copy(&copts, ffmpeg->opts, 0);
 394                 int ret = 0;
 395                 AVHWDeviceType hw_type = decode_hw_activate();
 396
 397                 // this should be avformat_copy_context(), but no copy avail
 398                 ret = avformat_open_input(&fmt_ctx,
 399                         ffmpeg->fmt_ctx->url, ffmpeg->fmt_ctx->iformat, &copts);
 400                 if( ret >= 0 ) {
 401                         ret = avformat_find_stream_info(fmt_ctx, 0);
 402                         st = fmt_ctx->streams[fidx];
 403                         load_markers();
 404                 }
 405                 while( ret >= 0 && st != 0 && !reading ) {
 406                         AVCodecID codec_id = st->codecpar->codec_id;
 407                         AVCodec *decoder = 0;
 408                         if( is_video() ) {
 409                                 if( ffmpeg->opt_video_decoder )
 410                                         decoder = avcodec_find_decoder_by_name(ffmpeg->opt_video_decoder);
 411                                 else
 412                                         ffmpeg->video_codec_remaps.update(codec_id, decoder);
 413                         }
 414                         else if( is_audio() ) {
 415                                 if( ffmpeg->opt_audio_decoder )
 416                                         decoder = avcodec_find_decoder_by_name(ffmpeg->opt_audio_decoder);
 417                                 else
 418                                         ffmpeg->audio_codec_remaps.update(codec_id, decoder);
 419                         }
 420                         if( !decoder )
 421                                 decoder = avcodec_find_decoder(codec_id);
 422                         avctx = avcodec_alloc_context3(decoder);
 423                         if( !avctx ) {
 424                                 eprintf(_("cant allocate codec context\n"));
 425                                 ret = AVERROR(ENOMEM);
 426                         }
 427                         if( ret >= 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 428                                 ret = decode_hw_format(decoder, hw_type);
 429                         }
 430                         if( ret >= 0 ) {
 431                                 avcodec_parameters_to_context(avctx, st->codecpar);
 432                                 if( !av_dict_get(copts, "threads", NULL, 0) )
 433                                         avctx->thread_count = ffmpeg->ff_cpus();
 434                                 ret = avcodec_open2(avctx, decoder, &copts);
 435                         }
 436                         AVFrame *hw_frame = 0;
 437                         if( ret >= 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 438                                 if( !(hw_frame=av_frame_alloc()) ) {
 439                                         fprintf(stderr, "FFStream::decode_activate: av_frame_alloc failed\n");
 440                                         ret = AVERROR(ENOMEM);
 441                                 }
 442                                 if( ret >= 0 )
 443                                         ret = decode(hw_frame);
 444                         }
 445                         if( ret < 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 446                                 ff_err(ret, "HW device init failed, using SW decode.\nfile:%s\n",
 447                                         ffmpeg->fmt_ctx->url);
 448                                 avcodec_close(avctx);
 449                                 avcodec_free_context(&avctx);
 450                                 av_buffer_unref(&hw_device_ctx);
 451                                 hw_device_ctx = 0;
 452                                 av_frame_free(&hw_frame);
 453                                 hw_type = AV_HWDEVICE_TYPE_NONE;
 454                                 int flags = AVSEEK_FLAG_BACKWARD | AVSEEK_FLAG_ANY;
 455                                 int idx = st->index;
 456                                 av_seek_frame(fmt_ctx, idx, 0, flags);
 457                                 need_packet = 1;  flushed = 0;
 458                                 seeked = 1;  st_eof(0);
 459                                 ret = 0;
 460                                 continue;
 461                         }
 462                         probe_frame = hw_frame;
 463                         if( ret >= 0 )
 464                                 reading = 1;
 465                         else
 466                                 eprintf(_("open decoder failed\n"));
 467                 }
 468                 if( ret < 0 )
 469                         eprintf(_("can't open input file: %s\n"), ffmpeg->fmt_ctx->url);
 470                 av_dict_free(&copts);
 471                 ff_unlock();
 472         }
 473         return reading;
 474 }
 475
 476 int FFStream::read_packet()
 477 {
 478         av_packet_unref(ipkt);
 479         int ret = av_read_frame(fmt_ctx, ipkt);
 480         if( ret < 0 ) {
 481                 st_eof(1);
 482                 if( ret == AVERROR_EOF ) return 0;
 483                 ff_err(ret, "FFStream::read_packet: av_read_frame failed\n");
 484                 flushed = 1;
 485                 return -1;
 486         }
 487         return 1;
 488 }
 489
 490 int FFStream::decode(AVFrame *frame)
 491 {
 492         if( probe_frame ) { // hw probe reads first frame
 493                 av_frame_ref(frame, probe_frame);
 494                 av_frame_free(&probe_frame);
 495                 return 1;
 496         }
 497         int ret = 0;
 498         int retries = MAX_RETRY;
 499         frm_lock->lock("FFStream::decode");
 500         while( ret >= 0 && !flushed && --retries >= 0 ) {
 501                 if( need_packet ) {
 502                         if( (ret=read_packet()) < 0 ) break;
 503                         AVPacket *pkt = ret > 0 ? (AVPacket*)ipkt : 0;
 504                         if( pkt ) {
 505                                 if( pkt->stream_index != st->index ) continue;
 506                                 if( !pkt->data || !pkt->size ) continue;
 507                         }
 508                         if( (ret=avcodec_send_packet(avctx, pkt)) < 0 ) {
 509                                 ff_err(ret, "FFStream::decode: avcodec_send_packet failed.\nfile:%s\n",
 510                                                 ffmpeg->fmt_ctx->url);
 511                                 break;
 512                         }
 513                         need_packet = 0;
 514                         retries = MAX_RETRY;
 515                 }
 516                 if( (ret=decode_frame(frame)) > 0 ) break;
 517                 if( !ret ) {
 518                         need_packet = 1;
 519                         flushed = st_eof();
 520                 }
 521         }
 522         frm_lock->unlock();
 523
 524         if( retries < 0 ) {
 525                 fprintf(stderr, "FFStream::decode: Retry limit\n");
 526                 ret = 0;
 527         }
 528         if( ret < 0 )
 529                 fprintf(stderr, "FFStream::decode: failed\n");
 530         return ret;
 531 }
 532
 533 int FFStream::load_filter(AVFrame *frame)
 534 {
 535         int ret = av_buffersrc_add_frame_flags(buffersrc_ctx, frame, 0);
 536         if( ret < 0 )
 537                 eprintf(_("av_buffersrc_add_frame_flags failed\n"));
 538         return ret;
 539 }
 540
 541 int FFStream::read_filter(AVFrame *frame)
 542 {
 543         int ret = av_buffersink_get_frame(buffersink_ctx, frame);
 544         if( ret < 0 ) {
 545                 if( ret == AVERROR(EAGAIN) ) return 0;
 546                 if( ret == AVERROR_EOF ) { st_eof(1); return -1; }
 547                 ff_err(ret, "FFStream::read_filter: av_buffersink_get_frame failed\n");
 548                 return ret;
 549         }
 550         return 1;
 551 }
 552
 553 int FFStream::read_frame(AVFrame *frame)
 554 {
 555         av_frame_unref(frame);
 556         if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
 557                 return decode(frame);
 558         if( !fframe && !(fframe=av_frame_alloc()) ) {
 559                 fprintf(stderr, "FFStream::read_frame: av_frame_alloc failed\n");
 560                 return -1;
 561         }
 562         int ret = -1;
 563         while( !flushed && !(ret=read_filter(frame)) ) {
 564                 if( (ret=decode(fframe)) < 0 ) break;
 565                 if( ret > 0 && (ret=load_filter(fframe)) < 0 ) break;
 566         }
 567         return ret;
 568 }
 569
 570 int FFStream::write_packet(FFPacket &pkt)
 571 {
 572         int ret = 0;
 573         if( !bsfc ) {
 574                 av_packet_rescale_ts(pkt, avctx->time_base, st->time_base);
 575                 pkt->stream_index = st->index;
 576                 ret = av_interleaved_write_frame(ffmpeg->fmt_ctx, pkt);
 577         }
 578         else {
 579                 ret = av_bsf_send_packet(bsfc, pkt);
 580                 while( ret >= 0 ) {
 581                         FFPacket bs;
 582                         if( (ret=av_bsf_receive_packet(bsfc, bs)) < 0 ) {
 583                                 if( ret == AVERROR(EAGAIN) ) return 0;
 584                                 if( ret == AVERROR_EOF ) return -1;
 585                                 break;
 586                         }
 587                         av_packet_rescale_ts(bs, avctx->time_base, st->time_base);
 588                         bs->stream_index = st->index;
 589                         ret = av_interleaved_write_frame(ffmpeg->fmt_ctx, bs);
 590                 }
 591         }
 592         if( ret < 0 )
 593                 ff_err(ret, "FFStream::write_packet: write packet failed.\nfile:%s\n",
 594                                 ffmpeg->fmt_ctx->url);
 595         return ret;
 596 }
 597
 598 int FFStream::encode_frame(AVFrame *frame)
 599 {
 600         int pkts = 0, ret = 0;
 601         for( int retry=MAX_RETRY; --retry>=0; ) {
 602                 if( frame || !pkts )
 603                         ret = avcodec_send_frame(avctx, frame);
 604                 if( !ret && frame ) return pkts;
 605                 if( ret < 0 && ret != AVERROR(EAGAIN) ) break;
 606                 FFPacket opkt;
 607                 ret = avcodec_receive_packet(avctx, opkt);
 608                 if( !frame && ret == AVERROR_EOF ) return pkts;
 609                 if( ret < 0 ) break;
 610                 ret = write_packet(opkt);
 611                 if( ret < 0 ) break;
 612                 ++pkts;
 613                 if( frame && stats_fp ) {
 614                         ret = write_stats_file();
 615                         if( ret < 0 ) break;
 616                 }
 617         }
 618         ff_err(ret, "FFStream::encode_frame: encode failed.\nfile: %s\n",
 619                                 ffmpeg->fmt_ctx->url);
 620         return -1;
 621 }
 622
 623 int FFStream::flush()
 624 {
 625         if( writing < 0 )
 626                 return -1;
 627         int ret = encode_frame(0);
 628         if( ret >= 0 && stats_fp ) {
 629                 ret = write_stats_file();
 630                 close_stats_file();
 631         }
 632         if( ret < 0 )
 633                 ff_err(ret, "FFStream::flush failed\n:file:%s\n",
 634                                 ffmpeg->fmt_ctx->url);
 635         return ret >= 0 ? 0 : 1;
 636 }
 637
 638
 639 int FFStream::open_stats_file()
 640 {
 641         stats_fp = fopen(stats_filename,"w");
 642         return stats_fp ? 0 : AVERROR(errno);
 643 }
 644
 645 int FFStream::close_stats_file()
 646 {
 647         if( stats_fp ) {
 648                 fclose(stats_fp);  stats_fp = 0;
 649         }
 650         return 0;
 651 }
 652
 653 int FFStream::read_stats_file()
 654 {
 655         int64_t len = 0;  struct stat stats_st;
 656         int fd = open(stats_filename, O_RDONLY);
 657         int ret = fd >= 0 ? 0: ENOENT;
 658         if( !ret && fstat(fd, &stats_st) )
 659                 ret = EINVAL;
 660         if( !ret ) {
 661                 len = stats_st.st_size;
 662                 stats_in = (char *)av_malloc(len+1);
 663                 if( !stats_in )
 664                         ret = ENOMEM;
 665         }
 666         if( !ret && read(fd, stats_in, len+1) != len )
 667                 ret = EIO;
 668         if( !ret ) {
 669                 stats_in[len] = 0;
 670                 avctx->stats_in = stats_in;
 671         }
 672         if( fd >= 0 )
 673                 close(fd);
 674         return !ret ? 0 : AVERROR(ret);
 675 }
 676
 677 int FFStream::write_stats_file()
 678 {
 679         int ret = 0;
 680         if( avctx->stats_out && (ret=strlen(avctx->stats_out)) > 0 ) {
 681                 int len = fwrite(avctx->stats_out, 1, ret, stats_fp);
 682                 if( ret != len )
 683                         ff_err(ret = AVERROR(errno), "FFStream::write_stats_file.\n%file:%s\n",
 684                                 ffmpeg->fmt_ctx->url);
 685         }
 686         return ret;
 687 }
 688
 689 int FFStream::init_stats_file()
 690 {
 691         int ret = 0;
 692         if( (pass & 2) && (ret = read_stats_file()) < 0 )
 693                 ff_err(ret, "stat file read: %s", stats_filename);
 694         if( (pass & 1) && (ret=open_stats_file()) < 0 )
 695                 ff_err(ret, "stat file open: %s", stats_filename);
 696         return ret >= 0 ? 0 : ret;
 697 }
 698
 699 int FFStream::seek(int64_t no, double rate)
 700 {
 701 // default ffmpeg native seek
 702         int npkts = 1;
 703         int64_t pos = no, pkt_pos = -1;
 704         IndexMarks *index_markers = get_markers();
 705         if( index_markers && index_markers->size() > 1 ) {
 706                 IndexMarks &marks = *index_markers;
 707                 int i = marks.find(pos);
 708                 int64_t n = i < 0 ? (i=0) : marks[i].no;
 709 // if indexed seek point not too far away (<30 secs), use index
 710                 if( no-n < 30*rate ) {
 711                         if( n < 0 ) n = 0;
 712                         pos = n;
 713                         if( i < marks.size() ) pkt_pos = marks[i].pos;
 714                         npkts = MAX_RETRY;
 715                 }
 716         }
 717         if( pos == curr_pos ) return 0;
 718         seeking = -1;
 719         double secs = pos < 0 ? 0. : pos / rate;
 720         AVRational time_base = st->time_base;
 721         int64_t tstmp = time_base.num > 0 ? secs * time_base.den/time_base.num : 0;
 722         if( !tstmp ) {
 723                 if( st->nb_index_entries > 0 ) tstmp = st->index_entries[0].timestamp;
 724                 else if( st->start_time != AV_NOPTS_VALUE ) tstmp = st->start_time;
 725                 else if( st->first_dts != AV_NOPTS_VALUE ) tstmp = st->first_dts;
 726                 else tstmp = INT64_MIN+1;
 727         }
 728         else if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 729         int idx = st->index;
 730 #if 0
 731 // seek all streams using the default timebase.
 732 //   this is how ffmpeg and ffplay work.  stream seeks are less tested.
 733         tstmp = av_rescale_q(tstmp, time_base, AV_TIME_BASE_Q);
 734         idx = -1;
 735 #endif
 736         frm_lock->lock("FFStream::seek");
 737         av_frame_free(&probe_frame);
 738         avcodec_flush_buffers(avctx);
 739         avformat_flush(fmt_ctx);
 740 #if 0
 741         int64_t seek = tstmp;
 742         int flags = AVSEEK_FLAG_ANY;
 743         if( !(fmt_ctx->iformat->flags & AVFMT_NO_BYTE_SEEK) && pkt_pos >= 0 ) {
 744                 seek = pkt_pos;
 745                 flags = AVSEEK_FLAG_BYTE;
 746         }
 747         int ret = avformat_seek_file(fmt_ctx, st->index, -INT64_MAX, seek, INT64_MAX, flags);
 748 #else
 749 // finds the first index frame below the target time
 750         int flags = AVSEEK_FLAG_BACKWARD | AVSEEK_FLAG_ANY;
 751         int ret = av_seek_frame(fmt_ctx, idx, tstmp, flags);
 752 #endif
 753         int retry = MAX_RETRY;
 754         while( ret >= 0 ) {
 755                 need_packet = 0;  flushed = 0;
 756                 seeked = 1;  st_eof(0);
 757 // read up to retry packets, limited to npkts in stream, and not pkt.pos past pkt_pos
 758                 while( --retry >= 0 ) {
 759                         if( read_packet() <= 0 ) { ret = -1;  break; }
 760                         if( ipkt->stream_index != st->index ) continue;
 761                         if( !ipkt->data || !ipkt->size ) continue;
 762                         if( pkt_pos >= 0 && ipkt->pos >= pkt_pos ) break;
 763                         if( --npkts <= 0 ) break;
 764                         int64_t pkt_ts = ipkt->dts != AV_NOPTS_VALUE ? ipkt->dts : ipkt->pts;
 765                         if( pkt_ts == AV_NOPTS_VALUE ) continue;
 766                         if( pkt_ts >= tstmp ) break;
 767                 }
 768                 if( retry < 0 ) {
 769                         ff_err(AVERROR(EIO), "FFStream::seek: %s\n"
 770                                 " retry limit, pos=%jd tstmp=%jd, ",
 771                                 ffmpeg->fmt_ctx->url, pos, tstmp);
 772                         ret = -1;
 773                 }
 774                 if( ret < 0 ) break;
 775                 ret = avcodec_send_packet(avctx, ipkt);
 776                 if( !ret ) break;
 777 //some codecs need more than one pkt to resync
 778                 if( ret == AVERROR_INVALIDDATA ) ret = 0;
 779                 if( ret < 0 ) {
 780                         ff_err(ret, "FFStream::avcodec_send_packet failed.\nseek:%s\n",
 781                                 ffmpeg->fmt_ctx->url);
 782                         break;
 783                 }
 784         }
 785         frm_lock->unlock();
 786         if( ret < 0 ) {
 787 printf("** seek fail %jd, %jd\n", pos, tstmp);
 788                 seeked = need_packet = 0;
 789                 st_eof(flushed=1);
 790                 return -1;
 791         }
 792 //printf("seeked pos = %ld, %ld\n", pos, tstmp);
 793         seek_pos = curr_pos = pos;
 794         return 0;
 795 }
 796
 797 FFAudioStream::FFAudioStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 798  : FFStream(ffmpeg, strm, fidx)
 799 {
 800         this->idx = idx;
 801         channel0 = channels = 0;
 802         sample_rate = 0;
 803         mbsz = 0;
 804         frame_sz = AUDIO_MIN_FRAME_SZ;
 805         length = 0;
 806         resample_context = 0;
 807         swr_ichs = swr_ifmt = swr_irate = 0;
 808
 809         aud_bfr_sz = 0;
 810         aud_bfr = 0;
 811
 812 // history buffer
 813         nch = 2;
 814         sz = 0x10000;
 815         long bsz = sz * nch;
 816         bfr = new float[bsz];
 817         lmt = bfr + bsz;
 818         reset_history();
 819 }
 820
 821 FFAudioStream::~FFAudioStream()
 822 {
 823         if( resample_context ) swr_free(&resample_context);
 824         delete [] aud_bfr;
 825         delete [] bfr;
 826 }
 827
 828 void FFAudioStream::init_swr(int ichs, int ifmt, int irate)
 829 {
 830         if( resample_context ) {
 831                 if( swr_ichs == ichs && swr_ifmt == ifmt && swr_irate == irate )
 832                         return;
 833                 swr_free(&resample_context);
 834         }
 835         swr_ichs = ichs;  swr_ifmt = ifmt;  swr_irate = irate;
 836         if( ichs == channels && ifmt == AV_SAMPLE_FMT_FLT && irate == sample_rate )
 837                 return;
 838         uint64_t ilayout = av_get_default_channel_layout(ichs);
 839         if( !ilayout ) ilayout = ((uint64_t)1<<ichs) - 1;
 840         uint64_t olayout = av_get_default_channel_layout(channels);
 841         if( !olayout ) olayout = ((uint64_t)1<<channels) - 1;
 842         resample_context = swr_alloc_set_opts(NULL,
 843                 olayout, AV_SAMPLE_FMT_FLT, sample_rate,
 844                 ilayout, (AVSampleFormat)ifmt, irate,
 845                 0, NULL);
 846         if( resample_context )
 847                 swr_init(resample_context);
 848 }
 849
 850 int FFAudioStream::get_samples(float *&samples, uint8_t **data, int len)
 851 {
 852         samples = *(float **)data;
 853         if( resample_context ) {
 854                 if( len > aud_bfr_sz ) {
 855                         delete [] aud_bfr;
 856                         aud_bfr = 0;
 857                 }
 858                 if( !aud_bfr ) {
 859                         aud_bfr_sz = len;
 860                         aud_bfr = new float[aud_bfr_sz*channels];
 861                 }
 862                 int ret = swr_convert(resample_context,
 863                         (uint8_t**)&aud_bfr, aud_bfr_sz, (const uint8_t**)data, len);
 864                 if( ret < 0 ) {
 865                         ff_err(ret, "FFAudioStream::get_samples: swr_convert failed\n");
 866                         return -1;
 867                 }
 868                 samples = aud_bfr;
 869                 len = ret;
 870         }
 871         return len;
 872 }
 873
 874 int FFAudioStream::load_history(uint8_t **data, int len)
 875 {
 876         float *samples;
 877         len = get_samples(samples, data, len);
 878         if( len > 0 ) {
 879                 // biggest user bfr since seek + frame
 880                 realloc(mbsz + len + 1, channels);
 881                 write(samples, len);
 882         }
 883         return len;
 884 }
 885
 886 int FFAudioStream::decode_frame(AVFrame *frame)
 887 {
 888         int first_frame = seeked;  seeked = 0;
 889         frame->best_effort_timestamp = AV_NOPTS_VALUE;
 890         int ret = avcodec_receive_frame(avctx, frame);
 891         if( ret < 0 ) {
 892                 if( first_frame ) return 0;
 893                 if( ret == AVERROR(EAGAIN) ) return 0;
 894                 if( ret == AVERROR_EOF ) { st_eof(1); return 0; }
 895                 ff_err(ret, "FFAudioStream::decode_frame: Could not read audio frame.\nfile:%s\n",
 896                                 ffmpeg->fmt_ctx->url);
 897                 return -1;
 898         }
 899         int64_t pkt_ts = frame->best_effort_timestamp;
 900         if( pkt_ts != AV_NOPTS_VALUE ) {
 901                 double ts = ffmpeg->to_secs(pkt_ts - nudge, st->time_base);
 902                 double t = (double)curr_pos / sample_rate;
 903 // some time_base clocks are very grainy, too grainy for audio (clicks, pops)
 904                 if( fabs(ts - t) > AUDIO_PTS_TOLERANCE )
 905                         curr_pos = ts * sample_rate + 0.5;
 906         }
 907         return 1;
 908 }
 909
 910 int FFAudioStream::encode_activate()
 911 {
 912         if( writing >= 0 ) return writing;
 913         if( !avctx->codec ) return writing = 0;
 914         frame_sz = avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE ?
 915                 10000 : avctx->frame_size;
 916         return FFStream::encode_activate();
 917 }
 918
 919 int64_t FFAudioStream::load_buffer(double ** const sp, int len)
 920 {
 921         reserve(len+1, st->codecpar->channels);
 922         for( int ch=0; ch<nch; ++ch )
 923                 write(sp[ch], len, ch);
 924         return put_inp(len);
 925 }
 926
 927 int FFAudioStream::in_history(int64_t pos)
 928 {
 929         if( pos > curr_pos ) return 0;
 930         int64_t len = hpos;
 931         if( len > sz ) len = sz;
 932         if( pos < curr_pos - len ) return 0;
 933         return 1;
 934 }
 935
 936
 937 int FFAudioStream::init_frame(AVFrame *frame)
 938 {
 939         frame->nb_samples = frame_sz;
 940         frame->format = avctx->sample_fmt;
 941         frame->channel_layout = avctx->channel_layout;
 942         frame->sample_rate = avctx->sample_rate;
 943         int ret = av_frame_get_buffer(frame, 0);
 944         if (ret < 0)
 945                 ff_err(ret, "FFAudioStream::init_frame: av_frame_get_buffer failed\n");
 946         return ret;
 947 }
 948
 949 int FFAudioStream::load(int64_t pos, int len)
 950 {
 951         if( audio_seek(pos) < 0 ) return -1;
 952         if( !frame && !(frame=av_frame_alloc()) ) {
 953                 fprintf(stderr, "FFAudioStream::load: av_frame_alloc failed\n");
 954                 return -1;
 955         }
 956         if( mbsz < len ) mbsz = len;
 957         int64_t end_pos = pos + len;
 958         int ret = 0, i = len / frame_sz + MAX_RETRY;
 959         while( ret>=0 && !flushed && curr_pos<end_pos && --i>=0 ) {
 960                 ret = read_frame(frame);
 961                 if( ret > 0 && frame->nb_samples > 0 ) {
 962                         init_swr(frame->channels, frame->format, frame->sample_rate);
 963                         load_history(&frame->extended_data[0], frame->nb_samples);
 964                         curr_pos += frame->nb_samples;
 965                 }
 966         }
 967         if( end_pos > curr_pos ) {
 968                 zero(end_pos - curr_pos);
 969                 curr_pos = end_pos;
 970         }
 971         len = curr_pos - pos;
 972         iseek(len);
 973         return len;
 974 }
 975
 976 int FFAudioStream::audio_seek(int64_t pos)
 977 {
 978         if( decode_activate() <= 0 ) return -1;
 979         if( !st->codecpar ) return -1;
 980         if( in_history(pos) ) return 0;
 981         if( pos == curr_pos ) return 0;
 982         reset_history();  mbsz = 0;
 983 // guarentee preload > 1sec samples
 984         if( (pos-=sample_rate) < 0 ) pos = 0;
 985         if( seek(pos, sample_rate) < 0 ) return -1;
 986         return 1;
 987 }
 988
 989 int FFAudioStream::encode(double **samples, int len)
 990 {
 991         if( encode_activate() <= 0 ) return -1;
 992         ffmpeg->flow_ctl();
 993         int ret = 0;
 994         int64_t count = samples ? load_buffer(samples, len) : used();
 995         int frame_sz1 = samples ? frame_sz-1 : 0;
 996         FFrame *frm = 0;
 997
 998         while( ret >= 0 && count > frame_sz1 ) {
 999                 frm = new FFrame(this);
1000                 if( (ret=frm->initted()) < 0 ) break;
1001                 AVFrame *frame = *frm;
1002                 len = count >= frame_sz ? frame_sz : count;
1003                 float *bfrp = get_outp(len);
1004                 ret =  swr_convert(resample_context,
1005                         (uint8_t **)frame->extended_data, len,
1006                         (const uint8_t **)&bfrp, len);
1007                 if( ret < 0 ) {
1008                         ff_err(ret, "FFAudioStream::encode: swr_convert failed\n");
1009                         break;
1010                 }
1011                 frame->nb_samples = len;
1012                 frm->queue(curr_pos);
1013                 frm = 0;
1014                 curr_pos += len;
1015                 count -= len;
1016         }
1017
1018         delete frm;
1019         return ret >= 0 ? 0 : 1;
1020 }
1021
1022 int FFAudioStream::drain()
1023 {
1024         return encode(0,0);
1025 }
1026
1027 int FFAudioStream::encode_frame(AVFrame *frame)
1028 {
1029         return FFStream::encode_frame(frame);
1030 }
1031
1032 int FFAudioStream::write_packet(FFPacket &pkt)
1033 {
1034         return FFStream::write_packet(pkt);
1035 }
1036
1037 void FFAudioStream::load_markers()
1038 {
1039         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1040         if( !index_state || idx >= index_state->audio_markers.size() ) return;
1041         if( index_state->marker_status == MARKERS_NOTTESTED ) return;
1042         FFStream::load_markers(*index_state->audio_markers[idx], sample_rate);
1043 }
1044
1045 IndexMarks *FFAudioStream::get_markers()
1046 {
1047         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1048         if( !index_state || idx >= index_state->audio_markers.size() ) return 0;
1049         return index_state->audio_markers[idx];
1050 }
1051
1052 FFVideoStream::FFVideoStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
1053  : FFStream(ffmpeg, strm, fidx),
1054    FFVideoConvert(ffmpeg->ff_prefs())
1055 {
1056         this->idx = idx;
1057         width = height = 0;
1058         transpose = 0;
1059         frame_rate = 0;
1060         aspect_ratio = 0;
1061         length = 0;
1062         interlaced = 0;
1063         top_field_first = 0;
1064         color_space = -1;
1065         color_range = -1;
1066         fconvert_ctx = 0;
1067 }
1068
1069 FFVideoStream::~FFVideoStream()
1070 {
1071         if( fconvert_ctx ) sws_freeContext(fconvert_ctx);
1072 }
1073
1074 AVHWDeviceType FFVideoStream::decode_hw_activate()
1075 {
1076         AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
1077         const char *hw_dev = ffmpeg->opt_hw_dev;
1078         if( !hw_dev ) hw_dev = getenv("CIN_HW_DEV");
1079         if( !hw_dev ) hw_dev = ffmpeg->ff_hw_dev();
1080         if( hw_dev && *hw_dev &&
1081             strcmp("none", hw_dev) && strcmp(_("none"), hw_dev) ) {
1082                 type = av_hwdevice_find_type_by_name(hw_dev);
1083                 if( type == AV_HWDEVICE_TYPE_NONE ) {
1084                         fprintf(stderr, "Device type %s is not supported.\n", hw_dev);
1085                         fprintf(stderr, "Available device types:");
1086                         while( (type = av_hwdevice_iterate_types(type)) != AV_HWDEVICE_TYPE_NONE )
1087                                 fprintf(stderr, " %s", av_hwdevice_get_type_name(type));
1088                         fprintf(stderr, "\n");
1089                 }
1090         }
1091         return type;
1092 }
1093
1094 int FFVideoStream::decode_hw_format(AVCodec *decoder, AVHWDeviceType type)
1095 {
1096         int ret = 0;
1097         hw_pix_fmt = AV_PIX_FMT_NONE;
1098         for( int i=0; ; ++i ) {
1099                 const AVCodecHWConfig *config = avcodec_get_hw_config(decoder, i);
1100                 if( !config ) {
1101                         fprintf(stderr, "Decoder %s does not support device type %s.\n",
1102                                 decoder->name, av_hwdevice_get_type_name(type));
1103                         ret = -1;
1104                         break;
1105                 }
1106                 if( (config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX) != 0 &&
1107                     config->device_type == type ) {
1108                         hw_pix_fmt = config->pix_fmt;
1109                         break;
1110                 }
1111         }
1112         if( hw_pix_fmt >= 0 ) {
1113                 hw_pixfmt = hw_pix_fmt;
1114                 avctx->get_format  = get_hw_format;
1115                 ret = av_hwdevice_ctx_create(&hw_device_ctx, type, 0, 0, 0);
1116                 if( ret >= 0 ) {
1117                         avctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
1118                         ret = 1;
1119                 }
1120                 else {
1121                         ff_err(ret, "Failed HW device create.\ndev:%s\n",
1122                                 av_hwdevice_get_type_name(type));
1123                         ret = -1;
1124                 }
1125         }
1126         return ret;
1127 }
1128
1129 AVHWDeviceType FFVideoStream::encode_hw_activate(const char *hw_dev)
1130 {
1131         AVBufferRef *hw_device_ctx = 0;
1132         AVBufferRef *hw_frames_ref = 0;
1133         AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
1134         if( strcmp(_("none"), hw_dev) ) {
1135                 type = av_hwdevice_find_type_by_name(hw_dev);
1136                 if( type != AV_HWDEVICE_TYPE_VAAPI ) {
1137                         fprintf(stderr, "currently, only vaapi hw encode is supported\n");
1138                         type = AV_HWDEVICE_TYPE_NONE;
1139                 }
1140         }
1141         if( type != AV_HWDEVICE_TYPE_NONE ) {
1142                 int ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, 0, 0, 0);
1143                 if( ret < 0 ) {
1144                         ff_err(ret, "Failed to create a HW device.\n");
1145                         type = AV_HWDEVICE_TYPE_NONE;
1146                 }
1147         }
1148         if( type != AV_HWDEVICE_TYPE_NONE ) {
1149                 hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx);
1150                 if( !hw_frames_ref ) {
1151                         fprintf(stderr, "Failed to create HW frame context.\n");
1152                         type = AV_HWDEVICE_TYPE_NONE;
1153                 }
1154         }
1155         if( type != AV_HWDEVICE_TYPE_NONE ) {
1156                 AVHWFramesContext *frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);
1157                 frames_ctx->format = AV_PIX_FMT_VAAPI;
1158                 frames_ctx->sw_format = AV_PIX_FMT_NV12;
1159                 frames_ctx->width = width;
1160                 frames_ctx->height = height;
1161                 frames_ctx->initial_pool_size = 0; // 200;
1162                 int ret = av_hwframe_ctx_init(hw_frames_ref);
1163                 if( ret >= 0 ) {
1164                         avctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);
1165                         if( !avctx->hw_frames_ctx ) ret = AVERROR(ENOMEM);
1166                 }
1167                 if( ret < 0 ) {
1168                         ff_err(ret, "Failed to initialize HW frame context.\n");
1169                         type = AV_HWDEVICE_TYPE_NONE;
1170                 }
1171                 av_buffer_unref(&hw_frames_ref);
1172         }
1173         return type;
1174 }
1175
1176 int FFVideoStream::encode_hw_write(FFrame *picture)
1177 {
1178         int ret = 0;
1179         AVFrame *hw_frm = 0;
1180         switch( avctx->pix_fmt ) {
1181         case AV_PIX_FMT_VAAPI:
1182                 hw_frm = av_frame_alloc();
1183                 if( !hw_frm ) { ret = AVERROR(ENOMEM);  break; }
1184                 ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, hw_frm, 0);
1185                 if( ret < 0 ) break;
1186                 ret = av_hwframe_transfer_data(hw_frm, *picture, 0);
1187                 if( ret < 0 ) break;
1188                 picture->set_hw_frame(hw_frm);
1189                 return 0;
1190         default:
1191                 return 0;
1192         }
1193         av_frame_free(&hw_frm);
1194         ff_err(ret, "Error while transferring frame data to GPU.\n");
1195         return ret;
1196 }
1197
1198 int FFVideoStream::decode_frame(AVFrame *frame)
1199 {
1200         int first_frame = seeked;  seeked = 0;
1201         int ret = avcodec_receive_frame(avctx, frame);
1202         if( ret < 0 ) {
1203                 if( first_frame ) return 0;
1204                 if( ret == AVERROR(EAGAIN) ) return 0;
1205                 if( ret == AVERROR_EOF ) { st_eof(1); return 0; }
1206                 ff_err(ret, "FFVideoStream::decode_frame: Could not read video frame.\nfile:%s\n,",
1207                                 ffmpeg->fmt_ctx->url);
1208                 return -1;
1209         }
1210         int64_t pkt_ts = frame->best_effort_timestamp;
1211         if( pkt_ts != AV_NOPTS_VALUE )
1212                 curr_pos = ffmpeg->to_secs(pkt_ts - nudge, st->time_base) * frame_rate + 0.5;
1213         return 1;
1214 }
1215
1216 int FFVideoStream::load(VFrame *vframe, int64_t pos)
1217 {
1218         int ret = video_seek(pos);
1219         if( ret < 0 ) return -1;
1220         if( !frame && !(frame=av_frame_alloc()) ) {
1221                 fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
1222                 return -1;
1223         }
1224         int i = MAX_RETRY + pos - curr_pos;
1225         while( ret>=0 && !flushed && curr_pos<=pos && --i>=0 ) {
1226                 ret = read_frame(frame);
1227                 if( ret > 0 ) {
1228                         if( frame->key_frame && seeking < 0 ) {
1229                                 int use_cache = ffmpeg->get_use_cache();
1230                                 if( use_cache < 0 ) {
1231 // for reverse read, reload file frame_cache from keyframe to pos
1232                                         ffmpeg->purge_cache();
1233                                         seeking = 1;
1234                                 }
1235                                 else
1236                                         seeking = 0;
1237                         }
1238                         if( seeking > 0 && curr_pos < pos ) {
1239                                 int vw =vframe->get_w(), vh = vframe->get_h();
1240                                 int vcolor_model = vframe->get_color_model();
1241                                 VFrame *cache_frame = new VFrame(vw, vh, vcolor_model);
1242                                 ret = convert_cmodel(cache_frame, frame);
1243                                 if( ret > 0 )
1244                                         ffmpeg->put_cache_frame(cache_frame, curr_pos);
1245                         }
1246                         ++curr_pos;
1247                 }
1248         }
1249         seeking = 0;
1250         if( frame->format == AV_PIX_FMT_NONE || frame->width <= 0 || frame->height <= 0 )
1251                 ret = -1;
1252         if( ret >= 0 ) {
1253                 ret = convert_cmodel(vframe, frame);
1254         }
1255         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
1256         return ret;
1257 }
1258
1259 int FFVideoStream::video_seek(int64_t pos)
1260 {
1261         if( decode_activate() <= 0 ) return -1;
1262         if( !st->codecpar ) return -1;
1263         if( pos == curr_pos-1 && !seeked ) return 0;
1264 // if close enough, just read up to current
1265         int gop = avctx->gop_size;
1266         if( gop < 4 ) gop = 4;
1267         if( gop > 64 ) gop = 64;
1268         int read_limit = curr_pos + 3*gop;
1269         if( pos >= curr_pos && pos <= read_limit ) return 0;
1270 // guarentee preload more than 2*gop frames
1271         if( seek(pos - 3*gop, frame_rate) < 0 ) return -1;
1272         return 1;
1273 }
1274
1275 int FFVideoStream::init_frame(AVFrame *picture)
1276 {
1277         switch( avctx->pix_fmt ) {
1278         case AV_PIX_FMT_VAAPI:
1279                 picture->format = AV_PIX_FMT_NV12;
1280                 break;
1281         default:
1282                 picture->format = avctx->pix_fmt;
1283                 break;
1284         }
1285         picture->width  = avctx->width;
1286         picture->height = avctx->height;
1287         int ret = av_frame_get_buffer(picture, 32);
1288         return ret;
1289 }
1290
1291 int FFVideoStream::convert_hw_frame(AVFrame *ifrm, AVFrame *ofrm)
1292 {
1293         AVPixelFormat ifmt = (AVPixelFormat)ifrm->format;
1294         AVPixelFormat ofmt = (AVPixelFormat)st->codecpar->format;
1295         ofrm->width  = ifrm->width;
1296         ofrm->height = ifrm->height;
1297         ofrm->format = ofmt;
1298         int ret = av_frame_get_buffer(ofrm, 32);
1299         if( ret < 0 ) {
1300                 ff_err(ret, "FFVideoStream::convert_hw_frame:"
1301                                 " av_frame_get_buffer failed\n");
1302                 return -1;
1303         }
1304         fconvert_ctx = sws_getCachedContext(fconvert_ctx,
1305                 ifrm->width, ifrm->height, ifmt,
1306                 ofrm->width, ofrm->height, ofmt,
1307                 SWS_POINT, NULL, NULL, NULL);
1308         if( !fconvert_ctx ) {
1309                 ff_err(AVERROR(EINVAL), "FFVideoStream::convert_hw_frame:"
1310                                 " sws_getCachedContext() failed\n");
1311                 return -1;
1312         }
1313         int codec_range = st->codecpar->color_range;
1314         int codec_space = st->codecpar->color_space;
1315         const int *codec_table = sws_getCoefficients(codec_space);
1316         int *inv_table, *table, src_range, dst_range;
1317         int brightness, contrast, saturation;
1318         if( !sws_getColorspaceDetails(fconvert_ctx,
1319                         &inv_table, &src_range, &table, &dst_range,
1320                         &brightness, &contrast, &saturation) ) {
1321                 if( src_range != codec_range || dst_range != codec_range ||
1322                     inv_table != codec_table || table != codec_table )
1323                         sws_setColorspaceDetails(fconvert_ctx,
1324                                         codec_table, codec_range, codec_table, codec_range,
1325                                         brightness, contrast, saturation);
1326         }
1327         ret = sws_scale(fconvert_ctx,
1328                 ifrm->data, ifrm->linesize, 0, ifrm->height,
1329                 ofrm->data, ofrm->linesize);
1330         if( ret < 0 ) {
1331                 ff_err(ret, "FFVideoStream::convert_hw_frame:"
1332                                 " sws_scale() failed\nfile: %s\n",
1333                                 ffmpeg->fmt_ctx->url);
1334                 return -1;
1335         }
1336         return 0;
1337 }
1338
1339 int FFVideoStream::load_filter(AVFrame *frame)
1340 {
1341         AVPixelFormat pix_fmt = (AVPixelFormat)frame->format;
1342         if( pix_fmt == hw_pixfmt ) {
1343                 AVFrame *hw_frame = this->frame;
1344                 av_frame_unref(hw_frame);
1345                 int ret = av_hwframe_transfer_data(hw_frame, frame, 0);
1346                 if( ret < 0 ) {
1347                         eprintf(_("Error retrieving data from GPU to CPU\nfile: %s\n"),
1348                                 ffmpeg->fmt_ctx->url);
1349                         return -1;
1350                 }
1351                 av_frame_unref(frame);
1352                 ret = convert_hw_frame(hw_frame, frame);
1353                 if( ret < 0 ) {
1354                         eprintf(_("Error converting data from GPU to CPU\nfile: %s\n"),
1355                                 ffmpeg->fmt_ctx->url);
1356                         return -1;
1357                 }
1358                 av_frame_unref(hw_frame);
1359         }
1360         return FFStream::load_filter(frame);
1361 }
1362
1363 int FFVideoStream::encode(VFrame *vframe)
1364 {
1365         if( encode_activate() <= 0 ) return -1;
1366         ffmpeg->flow_ctl();
1367         FFrame *picture = new FFrame(this);
1368         int ret = picture->initted();
1369         if( ret >= 0 ) {
1370                 AVFrame *frame = *picture;
1371                 frame->pts = curr_pos;
1372                 ret = convert_pixfmt(vframe, frame);
1373         }
1374         if( ret >= 0 && avctx->hw_frames_ctx )
1375                 encode_hw_write(picture);
1376         if( ret >= 0 ) {
1377                 picture->queue(curr_pos);
1378                 ++curr_pos;
1379         }
1380         else {
1381                 fprintf(stderr, "FFVideoStream::encode: encode failed\n");
1382                 delete picture;
1383         }
1384         return ret >= 0 ? 0 : 1;
1385 }
1386
1387 int FFVideoStream::drain()
1388 {
1389         return 0;
1390 }
1391
1392 int FFVideoStream::encode_frame(AVFrame *frame)
1393 {
1394         if( frame ) {
1395                 frame->interlaced_frame = interlaced;
1396                 frame->top_field_first = top_field_first;
1397         }
1398         if( frame && frame->format == AV_PIX_FMT_VAAPI ) { // ugly
1399                 int ret = avcodec_send_frame(avctx, frame);
1400                 for( int retry=MAX_RETRY; !ret && --retry>=0; ) {
1401                         FFPacket pkt;  av_init_packet(pkt);
1402                         pkt->data = NULL;  pkt->size = 0;
1403                         if( (ret=avcodec_receive_packet(avctx, pkt)) < 0 ) {
1404                                 if( ret == AVERROR(EAGAIN) ) ret = 0; // weird
1405                                 break;
1406                         }
1407                         ret = write_packet(pkt);
1408                         pkt->stream_index = 0;
1409                         av_packet_unref(pkt);
1410                 }
1411                 if( ret < 0 ) {
1412                         ff_err(ret, "FFStream::encode_frame: vaapi encode failed.\nfile: %s\n",
1413                                 ffmpeg->fmt_ctx->url);
1414                         return -1;
1415                 }
1416                 return 0;
1417         }
1418         return FFStream::encode_frame(frame);
1419 }
1420
1421 int FFVideoStream::write_packet(FFPacket &pkt)
1422 {
1423         if( !(ffmpeg->fmt_ctx->oformat->flags & AVFMT_VARIABLE_FPS) )
1424                 pkt->duration = 1;
1425         return FFStream::write_packet(pkt);
1426 }
1427
1428 AVPixelFormat FFVideoConvert::color_model_to_pix_fmt(int color_model)
1429 {
1430         switch( color_model ) {
1431         case BC_YUV422:         return AV_PIX_FMT_YUYV422;
1432         case BC_RGB888:         return AV_PIX_FMT_RGB24;
1433         case BC_RGBA8888:       return AV_PIX_FMT_RGBA;
1434         case BC_BGR8888:        return AV_PIX_FMT_BGR0;
1435         case BC_BGR888:         return AV_PIX_FMT_BGR24;
1436         case BC_ARGB8888:       return AV_PIX_FMT_ARGB;
1437         case BC_ABGR8888:       return AV_PIX_FMT_ABGR;
1438         case BC_RGB8:           return AV_PIX_FMT_RGB8;
1439         case BC_YUV420P:        return AV_PIX_FMT_YUV420P;
1440         case BC_YUV422P:        return AV_PIX_FMT_YUV422P;
1441         case BC_YUV444P:        return AV_PIX_FMT_YUV444P;
1442         case BC_YUV411P:        return AV_PIX_FMT_YUV411P;
1443         case BC_RGB565:         return AV_PIX_FMT_RGB565;
1444         case BC_RGB161616:      return AV_PIX_FMT_RGB48LE;
1445         case BC_RGBA16161616:   return AV_PIX_FMT_RGBA64LE;
1446         case BC_AYUV16161616:   return AV_PIX_FMT_AYUV64LE;
1447         case BC_GBRP:           return AV_PIX_FMT_GBRP;
1448         default: break;
1449         }
1450
1451         return AV_PIX_FMT_NB;
1452 }
1453
1454 int FFVideoConvert::pix_fmt_to_color_model(AVPixelFormat pix_fmt)
1455 {
1456         switch (pix_fmt) {
1457         case AV_PIX_FMT_YUYV422:        return BC_YUV422;
1458         case AV_PIX_FMT_RGB24:          return BC_RGB888;
1459         case AV_PIX_FMT_RGBA:           return BC_RGBA8888;
1460         case AV_PIX_FMT_BGR0:           return BC_BGR8888;
1461         case AV_PIX_FMT_BGR24:          return BC_BGR888;
1462         case AV_PIX_FMT_ARGB:           return BC_ARGB8888;
1463         case AV_PIX_FMT_ABGR:           return BC_ABGR8888;
1464         case AV_PIX_FMT_RGB8:           return BC_RGB8;
1465         case AV_PIX_FMT_YUV420P:        return BC_YUV420P;
1466         case AV_PIX_FMT_YUV422P:        return BC_YUV422P;
1467         case AV_PIX_FMT_YUV444P:        return BC_YUV444P;
1468         case AV_PIX_FMT_YUV411P:        return BC_YUV411P;
1469         case AV_PIX_FMT_RGB565:         return BC_RGB565;
1470         case AV_PIX_FMT_RGB48LE:        return BC_RGB161616;
1471         case AV_PIX_FMT_RGBA64LE:       return BC_RGBA16161616;
1472         case AV_PIX_FMT_AYUV64LE:       return BC_AYUV16161616;
1473         case AV_PIX_FMT_GBRP:           return BC_GBRP;
1474         default: break;
1475         }
1476
1477         return -1;
1478 }
1479
1480 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip)
1481 {
1482         AVFrame *ipic = av_frame_alloc();
1483         int ret = convert_picture_vframe(frame, ip, ipic);
1484         av_frame_free(&ipic);
1485         return ret;
1486 }
1487
1488 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip, AVFrame *ipic)
1489 { // picture = vframe
1490         int cmodel = frame->get_color_model();
1491         AVPixelFormat ofmt = color_model_to_pix_fmt(cmodel);
1492         if( ofmt == AV_PIX_FMT_NB ) return -1;
1493         int size = av_image_fill_arrays(ipic->data, ipic->linesize,
1494                 frame->get_data(), ofmt, frame->get_w(), frame->get_h(), 1);
1495         if( size < 0 ) return -1;
1496
1497         int bpp = BC_CModels::calculate_pixelsize(cmodel);
1498         int ysz = bpp * frame->get_w(), usz = ysz;
1499         switch( cmodel ) {
1500         case BC_YUV410P:
1501         case BC_YUV411P:
1502                 usz /= 2;
1503         case BC_YUV420P:
1504         case BC_YUV422P:
1505                 usz /= 2;
1506         case BC_YUV444P:
1507         case BC_GBRP:
1508                 // override av_image_fill_arrays() for planar types
1509                 ipic->data[0] = frame->get_y();  ipic->linesize[0] = ysz;
1510                 ipic->data[1] = frame->get_u();  ipic->linesize[1] = usz;
1511                 ipic->data[2] = frame->get_v();  ipic->linesize[2] = usz;
1512                 break;
1513         default:
1514                 ipic->data[0] = frame->get_data();
1515                 ipic->linesize[0] = frame->get_bytes_per_line();
1516                 break;
1517         }
1518
1519         AVPixelFormat pix_fmt = (AVPixelFormat)ip->format;
1520         FFVideoStream *vid =(FFVideoStream *)this;
1521         if( pix_fmt == vid->hw_pixfmt ) {
1522                 int ret = 0;
1523                 if( !sw_frame && !(sw_frame=av_frame_alloc()) )
1524                         ret = AVERROR(ENOMEM);
1525                 if( !ret ) {
1526                         ret = av_hwframe_transfer_data(sw_frame, ip, 0);
1527                         ip = sw_frame;
1528                         pix_fmt = (AVPixelFormat)ip->format;
1529                 }
1530                 if( ret < 0 ) {
1531                         eprintf(_("Error retrieving data from GPU to CPU\nfile: %s\n"),
1532                                 vid->ffmpeg->fmt_ctx->url);
1533                         return -1;
1534                 }
1535         }
1536         convert_ctx = sws_getCachedContext(convert_ctx, ip->width, ip->height, pix_fmt,
1537                 frame->get_w(), frame->get_h(), ofmt, SWS_POINT, NULL, NULL, NULL);
1538         if( !convert_ctx ) {
1539                 fprintf(stderr, "FFVideoConvert::convert_picture_frame:"
1540                                 " sws_getCachedContext() failed\n");
1541                 return -1;
1542         }
1543
1544         int color_range = 0;
1545         switch( preferences->yuv_color_range ) {
1546         case BC_COLORS_JPEG:  color_range = 1;  break;
1547         case BC_COLORS_MPEG:  color_range = 0;  break;
1548         }
1549         int color_space = SWS_CS_ITU601;
1550         switch( preferences->yuv_color_space ) {
1551         case BC_COLORS_BT601:  color_space = SWS_CS_ITU601;  break;
1552         case BC_COLORS_BT709:  color_space = SWS_CS_ITU709;  break;
1553         case BC_COLORS_BT2020: color_space = SWS_CS_BT2020;  break;
1554         }
1555         const int *color_table = sws_getCoefficients(color_space);
1556
1557         int *inv_table, *table, src_range, dst_range;
1558         int brightness, contrast, saturation;
1559         if( !sws_getColorspaceDetails(convert_ctx,
1560                         &inv_table, &src_range, &table, &dst_range,
1561                         &brightness, &contrast, &saturation) ) {
1562                 if( src_range != color_range || dst_range != color_range ||
1563                     inv_table != color_table || table != color_table )
1564                         sws_setColorspaceDetails(convert_ctx,
1565                                         color_table, color_range, color_table, color_range,
1566                                         brightness, contrast, saturation);
1567         }
1568
1569         int ret = sws_scale(convert_ctx, ip->data, ip->linesize, 0, ip->height,
1570             ipic->data, ipic->linesize);
1571         if( ret < 0 ) {
1572                 ff_err(ret, "FFVideoConvert::convert_picture_frame: sws_scale() failed\nfile: %s\n",
1573                         vid->ffmpeg->fmt_ctx->url);
1574                 return -1;
1575         }
1576         return 0;
1577 }
1578
1579 int FFVideoConvert::convert_cmodel(VFrame *frame, AVFrame *ip)
1580 {
1581         // try direct transfer
1582         if( !convert_picture_vframe(frame, ip) ) return 1;
1583         // use indirect transfer
1584         AVPixelFormat ifmt = (AVPixelFormat)ip->format;
1585         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ifmt);
1586         int max_bits = 0;
1587         for( int i = 0; i <desc->nb_components; ++i ) {
1588                 int bits = desc->comp[i].depth;
1589                 if( bits > max_bits ) max_bits = bits;
1590         }
1591         int imodel = pix_fmt_to_color_model(ifmt);
1592         int imodel_is_yuv = BC_CModels::is_yuv(imodel);
1593         int cmodel = frame->get_color_model();
1594         int cmodel_is_yuv = BC_CModels::is_yuv(cmodel);
1595         if( imodel < 0 || imodel_is_yuv != cmodel_is_yuv ) {
1596                 imodel = cmodel_is_yuv ?
1597                     (BC_CModels::has_alpha(cmodel) ?
1598                         BC_AYUV16161616 :
1599                         (max_bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
1600                     (BC_CModels::has_alpha(cmodel) ?
1601                         (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
1602                         (max_bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
1603         }
1604         VFrame vframe(ip->width, ip->height, imodel);
1605         if( convert_picture_vframe(&vframe, ip) ) return -1;
1606         frame->transfer_from(&vframe);
1607         return 1;
1608 }
1609
1610 int FFVideoConvert::transfer_cmodel(VFrame *frame, AVFrame *ifp)
1611 {
1612         int ret = convert_cmodel(frame, ifp);
1613         if( ret > 0 ) {
1614                 const AVDictionary *src = ifp->metadata;
1615                 AVDictionaryEntry *t = NULL;
1616                 BC_Hash *hp = frame->get_params();
1617                 //hp->clear();
1618                 while( (t=av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)) )
1619                         hp->update(t->key, t->value);
1620         }
1621         return ret;
1622 }
1623
1624 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op)
1625 {
1626         AVFrame *opic = av_frame_alloc();
1627         int ret = convert_vframe_picture(frame, op, opic);
1628         av_frame_free(&opic);
1629         return ret;
1630 }
1631
1632 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op, AVFrame *opic)
1633 { // vframe = picture
1634         int cmodel = frame->get_color_model();
1635         AVPixelFormat ifmt = color_model_to_pix_fmt(cmodel);
1636         if( ifmt == AV_PIX_FMT_NB ) return -1;
1637         int size = av_image_fill_arrays(opic->data, opic->linesize,
1638                  frame->get_data(), ifmt, frame->get_w(), frame->get_h(), 1);
1639         if( size < 0 ) return -1;
1640
1641         int bpp = BC_CModels::calculate_pixelsize(cmodel);
1642         int ysz = bpp * frame->get_w(), usz = ysz;
1643         switch( cmodel ) {
1644         case BC_YUV410P:
1645         case BC_YUV411P:
1646                 usz /= 2;
1647         case BC_YUV420P:
1648         case BC_YUV422P:
1649                 usz /= 2;
1650         case BC_YUV444P:
1651         case BC_GBRP:
1652                 // override av_image_fill_arrays() for planar types
1653                 opic->data[0] = frame->get_y();  opic->linesize[0] = ysz;
1654                 opic->data[1] = frame->get_u();  opic->linesize[1] = usz;
1655                 opic->data[2] = frame->get_v();  opic->linesize[2] = usz;
1656                 break;
1657         default:
1658                 opic->data[0] = frame->get_data();
1659                 opic->linesize[0] = frame->get_bytes_per_line();
1660                 break;
1661         }
1662
1663         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1664         convert_ctx = sws_getCachedContext(convert_ctx, frame->get_w(), frame->get_h(),
1665                 ifmt, op->width, op->height, ofmt, SWS_POINT, NULL, NULL, NULL);
1666         if( !convert_ctx ) {
1667                 fprintf(stderr, "FFVideoConvert::convert_frame_picture:"
1668                                 " sws_getCachedContext() failed\n");
1669                 return -1;
1670         }
1671
1672
1673         int color_range = 0;
1674         switch( preferences->yuv_color_range ) {
1675         case BC_COLORS_JPEG:  color_range = 1;  break;
1676         case BC_COLORS_MPEG:  color_range = 0;  break;
1677         }
1678         int color_space = SWS_CS_ITU601;
1679         switch( preferences->yuv_color_space ) {
1680         case BC_COLORS_BT601:  color_space = SWS_CS_ITU601;  break;
1681         case BC_COLORS_BT709:  color_space = SWS_CS_ITU709;  break;
1682         case BC_COLORS_BT2020: color_space = SWS_CS_BT2020;  break;
1683         }
1684         const int *color_table = sws_getCoefficients(color_space);
1685
1686         int *inv_table, *table, src_range, dst_range;
1687         int brightness, contrast, saturation;
1688         if( !sws_getColorspaceDetails(convert_ctx,
1689                         &inv_table, &src_range, &table, &dst_range,
1690                         &brightness, &contrast, &saturation) ) {
1691                 if( dst_range != color_range || table != color_table )
1692                         sws_setColorspaceDetails(convert_ctx,
1693                                         inv_table, src_range, color_table, color_range,
1694                                         brightness, contrast, saturation);
1695         }
1696
1697         int ret = sws_scale(convert_ctx, opic->data, opic->linesize, 0, frame->get_h(),
1698                         op->data, op->linesize);
1699         if( ret < 0 ) {
1700                 ff_err(ret, "FFVideoConvert::convert_frame_picture: sws_scale() failed\n");
1701                 return -1;
1702         }
1703         return 0;
1704 }
1705
1706 int FFVideoConvert::convert_pixfmt(VFrame *frame, AVFrame *op)
1707 {
1708         // try direct transfer
1709         if( !convert_vframe_picture(frame, op) ) return 1;
1710         // use indirect transfer
1711         int cmodel = frame->get_color_model();
1712         int max_bits = BC_CModels::calculate_pixelsize(cmodel) * 8;
1713         max_bits /= BC_CModels::components(cmodel);
1714         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1715         int imodel = pix_fmt_to_color_model(ofmt);
1716         int imodel_is_yuv = BC_CModels::is_yuv(imodel);
1717         int cmodel_is_yuv = BC_CModels::is_yuv(cmodel);
1718         if( imodel < 0 || imodel_is_yuv != cmodel_is_yuv ) {
1719                 imodel = cmodel_is_yuv ?
1720                     (BC_CModels::has_alpha(cmodel) ?
1721                         BC_AYUV16161616 :
1722                         (max_bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
1723                     (BC_CModels::has_alpha(cmodel) ?
1724                         (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
1725                         (max_bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
1726         }
1727         VFrame vframe(frame->get_w(), frame->get_h(), imodel);
1728         vframe.transfer_from(frame);
1729         if( !convert_vframe_picture(&vframe, op) ) return 1;
1730         return -1;
1731 }
1732
1733 int FFVideoConvert::transfer_pixfmt(VFrame *frame, AVFrame *ofp)
1734 {
1735         int ret = convert_pixfmt(frame, ofp);
1736         if( ret > 0 ) {
1737                 BC_Hash *hp = frame->get_params();
1738                 AVDictionary **dict = &ofp->metadata;
1739                 //av_dict_free(dict);
1740                 for( int i=0; i<hp->size(); ++i ) {
1741                         char *key = hp->get_key(i), *val = hp->get_value(i);
1742                         av_dict_set(dict, key, val, 0);
1743                 }
1744         }
1745         return ret;
1746 }
1747
1748 void FFVideoStream::load_markers()
1749 {
1750         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1751         if( !index_state || idx >= index_state->video_markers.size() ) return;
1752         FFStream::load_markers(*index_state->video_markers[idx], frame_rate);
1753 }
1754
1755 IndexMarks *FFVideoStream::get_markers()
1756 {
1757         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1758         if( !index_state || idx >= index_state->video_markers.size() ) return 0;
1759         return !index_state ? 0 : index_state->video_markers[idx];
1760 }
1761
1762
1763 FFMPEG::FFMPEG(FileBase *file_base)
1764 {
1765         fmt_ctx = 0;
1766         this->file_base = file_base;
1767         memset(file_format,0,sizeof(file_format));
1768         mux_lock = new Condition(0,"FFMPEG::mux_lock",0);
1769         flow_lock = new Condition(1,"FFStream::flow_lock",0);
1770         done = -1;
1771         flow = 1;
1772         decoding = encoding = 0;
1773         has_audio = has_video = 0;
1774         opts = 0;
1775         opt_duration = -1;
1776         opt_video_filter = 0;
1777         opt_audio_filter = 0;
1778         opt_hw_dev = 0;
1779         opt_video_decoder = 0;
1780         opt_audio_decoder = 0;
1781         fflags = 0;
1782         char option_path[BCTEXTLEN];
1783         set_option_path(option_path, "%s", "ffmpeg.opts");
1784         read_options(option_path, opts);
1785 }
1786
1787 FFMPEG::~FFMPEG()
1788 {
1789         ff_lock("FFMPEG::~FFMPEG()");
1790         close_encoder();
1791         ffaudio.remove_all_objects();
1792         ffvideo.remove_all_objects();
1793         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
1794         ff_unlock();
1795         delete flow_lock;
1796         delete mux_lock;
1797         av_dict_free(&opts);
1798         delete [] opt_video_filter;
1799         delete [] opt_audio_filter;
1800         delete [] opt_hw_dev;
1801 }
1802
1803 int FFMPEG::check_sample_rate(AVCodec *codec, int sample_rate)
1804 {
1805         const int *p = codec->supported_samplerates;
1806         if( !p ) return sample_rate;
1807         while( *p != 0 ) {
1808                 if( *p == sample_rate ) return *p;
1809                 ++p;
1810         }
1811         return 0;
1812 }
1813
1814 static inline AVRational std_frame_rate(int i)
1815 {
1816         static const int m1 = 1001*12, m2 = 1000*12;
1817         static const int freqs[] = {
1818                 40*m1, 48*m1, 50*m1, 60*m1, 80*m1,120*m1, 240*m1,
1819                 24*m2, 30*m2, 60*m2, 12*m2, 15*m2, 48*m2, 0,
1820         };
1821         int freq = i<30*12 ? (i+1)*1001 : freqs[i-30*12];
1822         return (AVRational) { freq, 1001*12 };
1823 }
1824
1825 AVRational FFMPEG::check_frame_rate(const AVRational *p, double frame_rate)
1826 {
1827         AVRational rate, best_rate = (AVRational) { 0, 0 };
1828         double max_err = 1.;  int i = 0;
1829         while( ((p ? (rate=*p++) : (rate=std_frame_rate(i++))), rate.num) != 0 ) {
1830                 double framerate = (double) rate.num / rate.den;
1831                 double err = fabs(frame_rate/framerate - 1.);
1832                 if( err >= max_err ) continue;
1833                 max_err = err;
1834                 best_rate = rate;
1835         }
1836         return max_err < 0.0001 ? best_rate : (AVRational) { 0, 0 };
1837 }
1838
1839 AVRational FFMPEG::to_sample_aspect_ratio(Asset *asset)
1840 {
1841 #if 1
1842         double display_aspect = asset->width / (double)asset->height;
1843         double sample_aspect = display_aspect / asset->aspect_ratio;
1844         int width = 1000000, height = width * sample_aspect + 0.5;
1845         float w, h;
1846         MWindow::create_aspect_ratio(w, h, width, height);
1847         return (AVRational){(int)w, (int)h};
1848 #else
1849 // square pixels
1850         return (AVRational){1, 1};
1851 #endif
1852 }
1853
1854 AVRational FFMPEG::to_time_base(int sample_rate)
1855 {
1856         return (AVRational){1, sample_rate};
1857 }
1858
1859 int FFMPEG::get_fmt_score(AVSampleFormat dst_fmt, AVSampleFormat src_fmt)
1860 {
1861         int score = 0;
1862         int dst_planar = av_sample_fmt_is_planar(dst_fmt);
1863         int src_planar = av_sample_fmt_is_planar(src_fmt);
1864         if( dst_planar != src_planar ) ++score;
1865         int dst_bytes = av_get_bytes_per_sample(dst_fmt);
1866         int src_bytes = av_get_bytes_per_sample(src_fmt);
1867         score += (src_bytes > dst_bytes ? 100 : -10) * (src_bytes - dst_bytes);
1868         int src_packed = av_get_packed_sample_fmt(src_fmt);
1869         int dst_packed = av_get_packed_sample_fmt(dst_fmt);
1870         if( dst_packed == AV_SAMPLE_FMT_S32 && src_packed == AV_SAMPLE_FMT_FLT ) score += 20;
1871         if( dst_packed == AV_SAMPLE_FMT_FLT && src_packed == AV_SAMPLE_FMT_S32 ) score += 2;
1872         return score;
1873 }
1874
1875 AVSampleFormat FFMPEG::find_best_sample_fmt_of_list(
1876                 const AVSampleFormat *sample_fmts, AVSampleFormat src_fmt)
1877 {
1878         AVSampleFormat best = AV_SAMPLE_FMT_NONE;
1879         int best_score = get_fmt_score(best, src_fmt);
1880         for( int i=0; sample_fmts[i] >= 0; ++i ) {
1881                 AVSampleFormat sample_fmt = sample_fmts[i];
1882                 int score = get_fmt_score(sample_fmt, src_fmt);
1883                 if( score >= best_score ) continue;
1884                 best = sample_fmt;  best_score = score;
1885         }
1886         return best;
1887 }
1888
1889
1890 void FFMPEG::set_option_path(char *path, const char *fmt, ...)
1891 {
1892         char *ep = path + BCTEXTLEN-1;
1893         strncpy(path, File::get_cindat_path(), ep-path);
1894         strncat(path, "/ffmpeg/", ep-path);
1895         path += strlen(path);
1896         va_list ap;
1897         va_start(ap, fmt);
1898         path += vsnprintf(path, ep-path, fmt, ap);
1899         va_end(ap);
1900         *path = 0;
1901 }
1902
1903 void FFMPEG::get_option_path(char *path, const char *type, const char *spec)
1904 {
1905         if( *spec == '/' )
1906                 strcpy(path, spec);
1907         else
1908                 set_option_path(path, "%s/%s", type, spec);
1909 }
1910
1911 int FFMPEG::get_format(char *format, const char *path, const char *spec)
1912 {
1913         char option_path[BCTEXTLEN], line[BCTEXTLEN], codec[BCTEXTLEN];
1914         get_option_path(option_path, path, spec);
1915         FILE *fp = fopen(option_path,"r");
1916         if( !fp ) return 1;
1917         int ret = 0;
1918         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1919         if( !ret ) {
1920                 line[sizeof(line)-1] = 0;
1921                 ret = scan_option_line(line, format, codec);
1922         }
1923         fclose(fp);
1924         return ret;
1925 }
1926
1927 int FFMPEG::get_codec(char *codec, const char *path, const char *spec)
1928 {
1929         char option_path[BCTEXTLEN], line[BCTEXTLEN], format[BCTEXTLEN];
1930         get_option_path(option_path, path, spec);
1931         FILE *fp = fopen(option_path,"r");
1932         if( !fp ) return 1;
1933         int ret = 0;
1934         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1935         fclose(fp);
1936         if( !ret ) {
1937                 line[sizeof(line)-1] = 0;
1938                 ret = scan_option_line(line, format, codec);
1939         }
1940         if( !ret ) {
1941                 char *vp = codec, *ep = vp+BCTEXTLEN-1;
1942                 while( vp < ep && *vp && *vp != '|' ) ++vp;
1943                 if( *vp == '|' ) --vp;
1944                 while( vp > codec && (*vp==' ' || *vp=='\t') ) *vp-- = 0;
1945         }
1946         return ret;
1947 }
1948
1949 int FFMPEG::get_file_format()
1950 {
1951         char audio_muxer[BCSTRLEN], video_muxer[BCSTRLEN];
1952         char audio_format[BCSTRLEN], video_format[BCSTRLEN];
1953         audio_muxer[0] = audio_format[0] = 0;
1954         video_muxer[0] = video_format[0] = 0;
1955         Asset *asset = file_base->asset;
1956         int ret = asset ? 0 : 1;
1957         if( !ret && asset->audio_data ) {
1958                 if( !(ret=get_format(audio_format, "audio", asset->acodec)) ) {
1959                         if( get_format(audio_muxer, "format", audio_format) ) {
1960                                 strcpy(audio_muxer, audio_format);
1961                                 audio_format[0] = 0;
1962                         }
1963                 }
1964         }
1965         if( !ret && asset->video_data ) {
1966                 if( !(ret=get_format(video_format, "video", asset->vcodec)) ) {
1967                         if( get_format(video_muxer, "format", video_format) ) {
1968                                 strcpy(video_muxer, video_format);
1969                                 video_format[0] = 0;
1970                         }
1971                 }
1972         }
1973         if( !ret && !audio_muxer[0] && !video_muxer[0] )
1974                 ret = 1;
1975         if( !ret && audio_muxer[0] && video_muxer[0] &&
1976             strcmp(audio_muxer, video_muxer) ) ret = -1;
1977         if( !ret && audio_format[0] && video_format[0] &&
1978             strcmp(audio_format, video_format) ) ret = -1;
1979         if( !ret )
1980                 strcpy(file_format, !audio_format[0] && !video_format[0] ?
1981                         (audio_muxer[0] ? audio_muxer : video_muxer) :
1982                         (audio_format[0] ? audio_format : video_format));
1983         return ret;
1984 }
1985
1986 int FFMPEG::scan_option_line(const char *cp, char *tag, char *val)
1987 {
1988         while( *cp == ' ' || *cp == '\t' ) ++cp;
1989         const char *bp = cp;
1990         while( *cp && *cp != ' ' && *cp != '\t' && *cp != '=' && *cp != '\n' ) ++cp;
1991         int len = cp - bp;
1992         if( !len || len > BCSTRLEN-1 ) return 1;
1993         while( bp < cp ) *tag++ = *bp++;
1994         *tag = 0;
1995         while( *cp == ' ' || *cp == '\t' ) ++cp;
1996         if( *cp == '=' ) ++cp;
1997         while( *cp == ' ' || *cp == '\t' ) ++cp;
1998         bp = cp;
1999         while( *cp && *cp != '\n' ) ++cp;
2000         len = cp - bp;
2001         if( len > BCTEXTLEN-1 ) return 1;
2002         while( bp < cp ) *val++ = *bp++;
2003         *val = 0;
2004         return 0;
2005 }
2006
2007 int FFMPEG::can_render(const char *fformat, const char *type)
2008 {
2009         FileSystem fs;
2010         char option_path[BCTEXTLEN];
2011         FFMPEG::set_option_path(option_path, type);
2012         fs.update(option_path);
2013         int total_files = fs.total_files();
2014         for( int i=0; i<total_files; ++i ) {
2015                 const char *name = fs.get_entry(i)->get_name();
2016                 const char *ext = strrchr(name,'.');
2017                 if( !ext ) continue;
2018                 if( !strcmp(fformat, ++ext) ) return 1;
2019         }
2020         return 0;
2021 }
2022
2023 int FFMPEG::get_ff_option(const char *nm, const char *options, char *value)
2024 {
2025         for( const char *cp=options; *cp!=0; ) {
2026                 char line[BCTEXTLEN], *bp = line, *ep = bp+sizeof(line)-1;
2027                 while( bp < ep && *cp && *cp!='\n' ) *bp++ = *cp++;
2028                 if( *cp ) ++cp;
2029                 *bp = 0;
2030                 if( !line[0] || line[0] == '#' || line[0] == ';' ) continue;
2031                 char key[BCSTRLEN], val[BCTEXTLEN];
2032                 if( FFMPEG::scan_option_line(line, key, val) ) continue;
2033                 if( !strcmp(key, nm) ) {
2034                         strncpy(value, val, BCSTRLEN);
2035                         return 0;
2036                 }
2037         }
2038         return 1;
2039 }
2040
2041 void FFMPEG::scan_audio_options(Asset *asset, EDL *edl)
2042 {
2043         char cin_sample_fmt[BCSTRLEN];
2044         int cin_fmt = AV_SAMPLE_FMT_NONE;
2045         const char *options = asset->ff_audio_options;
2046         if( !get_ff_option("cin_sample_fmt", options, cin_sample_fmt) )
2047                 cin_fmt = (int)av_get_sample_fmt(cin_sample_fmt);
2048         if( cin_fmt < 0 ) {
2049                 char audio_codec[BCSTRLEN]; audio_codec[0] = 0;
2050                 AVCodec *av_codec = !FFMPEG::get_codec(audio_codec, "audio", asset->acodec) ?
2051                         avcodec_find_encoder_by_name(audio_codec) : 0;
2052                 if( av_codec && av_codec->sample_fmts )
2053                         cin_fmt = find_best_sample_fmt_of_list(av_codec->sample_fmts, AV_SAMPLE_FMT_FLT);
2054         }
2055         if( cin_fmt < 0 ) cin_fmt = AV_SAMPLE_FMT_S16;
2056         const char *name = av_get_sample_fmt_name((AVSampleFormat)cin_fmt);
2057         if( !name ) name = _("None");
2058         strcpy(asset->ff_sample_format, name);
2059
2060         char value[BCSTRLEN];
2061         if( !get_ff_option("cin_bitrate", options, value) )
2062                 asset->ff_audio_bitrate = atoi(value);
2063         if( !get_ff_option("cin_quality", options, value) )
2064                 asset->ff_audio_quality = atoi(value);
2065 }
2066
2067 void FFMPEG::load_audio_options(Asset *asset, EDL *edl)
2068 {
2069         char options_path[BCTEXTLEN];
2070         set_option_path(options_path, "audio/%s", asset->acodec);
2071         if( !load_options(options_path,
2072                         asset->ff_audio_options,
2073                         sizeof(asset->ff_audio_options)) )
2074                 scan_audio_options(asset, edl);
2075 }
2076
2077 void FFMPEG::scan_video_options(Asset *asset, EDL *edl)
2078 {
2079         char cin_pix_fmt[BCSTRLEN];
2080         int cin_fmt = AV_PIX_FMT_NONE;
2081         const char *options = asset->ff_video_options;
2082         if( !get_ff_option("cin_pix_fmt", options, cin_pix_fmt) )
2083                         cin_fmt = (int)av_get_pix_fmt(cin_pix_fmt);
2084         if( cin_fmt < 0 ) {
2085                 char video_codec[BCSTRLEN];  video_codec[0] = 0;
2086                 AVCodec *av_codec = !get_codec(video_codec, "video", asset->vcodec) ?
2087                         avcodec_find_encoder_by_name(video_codec) : 0;
2088                 if( av_codec && av_codec->pix_fmts ) {
2089                         if( 0 && edl ) { // frequently picks a bad answer
2090                                 int color_model = edl->session->color_model;
2091                                 int max_bits = BC_CModels::calculate_pixelsize(color_model) * 8;
2092                                 max_bits /= BC_CModels::components(color_model);
2093                                 cin_fmt = avcodec_find_best_pix_fmt_of_list(av_codec->pix_fmts,
2094                                         (BC_CModels::is_yuv(color_model) ?
2095                                                 (max_bits > 8 ? AV_PIX_FMT_AYUV64LE : AV_PIX_FMT_YUV444P) :
2096                                                 (max_bits > 8 ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB24)), 0, 0);
2097                         }
2098                         else
2099                                 cin_fmt = av_codec->pix_fmts[0];
2100                 }
2101         }
2102         if( cin_fmt < 0 ) cin_fmt = AV_PIX_FMT_YUV420P;
2103         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get((AVPixelFormat)cin_fmt);
2104         const char *name = desc ? desc->name : _("None");
2105         strcpy(asset->ff_pixel_format, name);
2106
2107         char value[BCSTRLEN];
2108         if( !get_ff_option("cin_bitrate", options, value) )
2109                 asset->ff_video_bitrate = atoi(value);
2110         if( !get_ff_option("cin_quality", options, value) )
2111                 asset->ff_video_quality = atoi(value);
2112 }
2113
2114 void FFMPEG::load_video_options(Asset *asset, EDL *edl)
2115 {
2116         char options_path[BCTEXTLEN];
2117         set_option_path(options_path, "video/%s", asset->vcodec);
2118         if( !load_options(options_path,
2119                         asset->ff_video_options,
2120                         sizeof(asset->ff_video_options)) )
2121                 scan_video_options(asset, edl);
2122 }
2123
2124 void FFMPEG::scan_format_options(Asset *asset, EDL *edl)
2125 {
2126 }
2127
2128 void FFMPEG::load_format_options(Asset *asset, EDL *edl)
2129 {
2130         char options_path[BCTEXTLEN];
2131         set_option_path(options_path, "format/%s", asset->fformat);
2132         if( !load_options(options_path,
2133                         asset->ff_format_options,
2134                         sizeof(asset->ff_format_options)) )
2135                 scan_format_options(asset, edl);
2136 }
2137
2138 int FFMPEG::load_defaults(const char *path, const char *type,
2139                  char *codec, char *codec_options, int len)
2140 {
2141         char default_file[BCTEXTLEN];
2142         set_option_path(default_file, "%s/%s.dfl", path, type);
2143         FILE *fp = fopen(default_file,"r");
2144         if( !fp ) return 1;
2145         fgets(codec, BCSTRLEN, fp);
2146         char *cp = codec;
2147         while( *cp && *cp!='\n' ) ++cp;
2148         *cp = 0;
2149         while( len > 0 && fgets(codec_options, len, fp) ) {
2150                 int n = strlen(codec_options);
2151                 codec_options += n;  len -= n;
2152         }
2153         fclose(fp);
2154         set_option_path(default_file, "%s/%s", path, codec);
2155         return load_options(default_file, codec_options, len);
2156 }
2157
2158 void FFMPEG::set_asset_format(Asset *asset, EDL *edl, const char *text)
2159 {
2160         if( asset->format != FILE_FFMPEG ) return;
2161         if( text != asset->fformat )
2162                 strcpy(asset->fformat, text);
2163         if( !asset->ff_format_options[0] )
2164                 load_format_options(asset, edl);
2165         if( asset->audio_data && !asset->ff_audio_options[0] ) {
2166                 if( !load_defaults("audio", text, asset->acodec,
2167                                 asset->ff_audio_options, sizeof(asset->ff_audio_options)) )
2168                         scan_audio_options(asset, edl);
2169                 else
2170                         asset->audio_data = 0;
2171         }
2172         if( asset->video_data && !asset->ff_video_options[0] ) {
2173                 if( !load_defaults("video", text, asset->vcodec,
2174                                 asset->ff_video_options, sizeof(asset->ff_video_options)) )
2175                         scan_video_options(asset, edl);
2176                 else
2177                         asset->video_data = 0;
2178         }
2179 }
2180
2181 int FFMPEG::get_encoder(const char *options,
2182                 char *format, char *codec, char *bsfilter)
2183 {
2184         FILE *fp = fopen(options,"r");
2185         if( !fp ) {
2186                 eprintf(_("options open failed %s\n"),options);
2187                 return 1;
2188         }
2189         char line[BCTEXTLEN];
2190         if( !fgets(line, sizeof(line), fp) ||
2191             scan_encoder(line, format, codec, bsfilter) )
2192                 eprintf(_("format/codec not found %s\n"), options);
2193         fclose(fp);
2194         return 0;
2195 }
2196
2197 int FFMPEG::scan_encoder(const char *line,
2198                 char *format, char *codec, char *bsfilter)
2199 {
2200         format[0] = codec[0] = bsfilter[0] = 0;
2201         if( scan_option_line(line, format, codec) ) return 1;
2202         char *cp = codec;
2203         while( *cp && *cp != '|' ) ++cp;
2204         if( !*cp ) return 0;
2205         char *bp = cp;
2206         do { *bp-- = 0; } while( bp>=codec && (*bp==' ' || *bp == '\t' ) );
2207         while( *++cp && (*cp==' ' || *cp == '\t') );
2208         bp = bsfilter;
2209         for( int i=BCTEXTLEN; --i>0 && *cp; ) *bp++ = *cp++;
2210         *bp = 0;
2211         return 0;
2212 }
2213
2214 int FFMPEG::read_options(const char *options, AVDictionary *&opts, int skip)
2215 {
2216         FILE *fp = fopen(options,"r");
2217         if( !fp ) return 1;
2218         int ret = 0;
2219         while( !ret && --skip >= 0 ) {
2220                 int ch = getc(fp);
2221                 while( ch >= 0 && ch != '\n' ) ch = getc(fp);
2222                 if( ch < 0 ) ret = 1;
2223         }
2224         if( !ret )
2225                 ret = read_options(fp, options, opts);
2226         fclose(fp);
2227         return ret;
2228 }
2229
2230 int FFMPEG::scan_options(const char *options, AVDictionary *&opts, AVStream *st)
2231 {
2232         FILE *fp = fmemopen((void *)options,strlen(options),"r");
2233         if( !fp ) return 0;
2234         int ret = read_options(fp, options, opts);
2235         fclose(fp);
2236         if( !ret && st ) {
2237                 AVDictionaryEntry *tag = av_dict_get(opts, "id", NULL, 0);
2238                 if( tag ) st->id = strtol(tag->value,0,0);
2239         }
2240         return ret;
2241 }
2242
2243 void FFMPEG::put_cache_frame(VFrame *frame, int64_t position)
2244 {
2245         file_base->file->put_cache_frame(frame, position, 0);
2246 }
2247
2248 int FFMPEG::get_use_cache()
2249 {
2250         return file_base->file->get_use_cache();
2251 }
2252
2253 void FFMPEG::purge_cache()
2254 {
2255         file_base->file->purge_cache();
2256 }
2257
2258 FFCodecRemap::FFCodecRemap()
2259 {
2260         old_codec = 0;
2261         new_codec = 0;
2262 }
2263 FFCodecRemap::~FFCodecRemap()
2264 {
2265         delete [] old_codec;
2266         delete [] new_codec;
2267 }
2268
2269 int FFCodecRemaps::add(const char *val)
2270 {
2271         char old_codec[BCSTRLEN], new_codec[BCSTRLEN];
2272         if( sscanf(val, " %63[a-zA-z0-9_-] = %63[a-z0-9_-]",
2273                 &old_codec[0], &new_codec[0]) != 2 ) return 1;
2274         FFCodecRemap &remap = append();
2275         remap.old_codec = cstrdup(old_codec);
2276         remap.new_codec = cstrdup(new_codec);
2277         return 0;
2278 }
2279
2280
2281 int FFCodecRemaps::update(AVCodecID &codec_id, AVCodec *&decoder)
2282 {
2283         AVCodec *codec = avcodec_find_decoder(codec_id);
2284         if( !codec ) return -1;
2285         const char *name = codec->name;
2286         FFCodecRemaps &map = *this;
2287         int k = map.size();
2288         while( --k >= 0 && strcmp(map[k].old_codec, name) );
2289         if( k < 0 ) return 1;
2290         const char *new_codec = map[k].new_codec;
2291         codec = avcodec_find_decoder_by_name(new_codec);
2292         if( !codec ) return -1;
2293         decoder = codec;
2294         return 0;
2295 }
2296
2297 int FFMPEG::read_options(FILE *fp, const char *options, AVDictionary *&opts)
2298 {
2299         int ret = 0, no = 0;
2300         char line[BCTEXTLEN];
2301         while( !ret && fgets(line, sizeof(line), fp) ) {
2302                 line[sizeof(line)-1] = 0;
2303                 if( line[0] == '#' ) continue;
2304                 if( line[0] == '\n' ) continue;
2305                 char key[BCSTRLEN], val[BCTEXTLEN];
2306                 if( scan_option_line(line, key, val) ) {
2307                         eprintf(_("err reading %s: line %d\n"), options, no);
2308                         ret = 1;
2309                 }
2310                 if( !ret ) {
2311                         if( !strcmp(key, "duration") )
2312                                 opt_duration = strtod(val, 0);
2313                         else if( !strcmp(key, "video_decoder") )
2314                                 opt_video_decoder = cstrdup(val);
2315                         else if( !strcmp(key, "audio_decoder") )
2316                                 opt_audio_decoder = cstrdup(val);
2317                         else if( !strcmp(key, "remap_video_decoder") )
2318                                 video_codec_remaps.add(val);
2319                         else if( !strcmp(key, "remap_audio_decoder") )
2320                                 audio_codec_remaps.add(val);
2321                         else if( !strcmp(key, "video_filter") )
2322                                 opt_video_filter = cstrdup(val);
2323                         else if( !strcmp(key, "audio_filter") )
2324                                 opt_audio_filter = cstrdup(val);
2325                         else if( !strcmp(key, "cin_hw_dev") )
2326                                 opt_hw_dev = cstrdup(val);
2327                         else if( !strcmp(key, "loglevel") )
2328                                 set_loglevel(val);
2329                         else
2330                                 av_dict_set(&opts, key, val, 0);
2331                 }
2332         }
2333         return ret;
2334 }
2335
2336 int FFMPEG::load_options(const char *options, AVDictionary *&opts)
2337 {
2338         char option_path[BCTEXTLEN];
2339         set_option_path(option_path, "%s", options);
2340         return read_options(option_path, opts);
2341 }
2342
2343 int FFMPEG::load_options(const char *path, char *bfr, int len)
2344 {
2345         *bfr = 0;
2346         FILE *fp = fopen(path, "r");
2347         if( !fp ) return 1;
2348         fgets(bfr, len, fp); // skip hdr
2349         len = fread(bfr, 1, len-1, fp);
2350         if( len < 0 ) len = 0;
2351         bfr[len] = 0;
2352         fclose(fp);
2353         return 0;
2354 }
2355
2356 void FFMPEG::set_loglevel(const char *ap)
2357 {
2358         if( !ap || !*ap ) return;
2359         const struct {
2360                 const char *name;
2361                 int level;
2362         } log_levels[] = {
2363                 { "quiet"  , AV_LOG_QUIET   },
2364                 { "panic"  , AV_LOG_PANIC   },
2365                 { "fatal"  , AV_LOG_FATAL   },
2366                 { "error"  , AV_LOG_ERROR   },
2367                 { "warning", AV_LOG_WARNING },
2368                 { "info"   , AV_LOG_INFO    },
2369                 { "verbose", AV_LOG_VERBOSE },
2370                 { "debug"  , AV_LOG_DEBUG   },
2371         };
2372         for( int i=0; i<(int)(sizeof(log_levels)/sizeof(log_levels[0])); ++i ) {
2373                 if( !strcmp(log_levels[i].name, ap) ) {
2374                         av_log_set_level(log_levels[i].level);
2375                         return;
2376                 }
2377         }
2378         av_log_set_level(atoi(ap));
2379 }
2380
2381 double FFMPEG::to_secs(int64_t time, AVRational time_base)
2382 {
2383         double base_time = time == AV_NOPTS_VALUE ? 0 :
2384                 av_rescale_q(time, time_base, AV_TIME_BASE_Q);
2385         return base_time / AV_TIME_BASE;
2386 }
2387
2388 int FFMPEG::info(char *text, int len)
2389 {
2390         if( len <= 0 ) return 0;
2391         decode_activate();
2392 #define report(s...) do { int n = snprintf(cp,len,s); cp += n;  len -= n; } while(0)
2393         char *cp = text;
2394         report("format: %s\n",fmt_ctx->iformat->name);
2395         if( ffvideo.size() > 0 )
2396                 report("\n%d video stream%s\n",ffvideo.size(), ffvideo.size()!=1 ? "s" : "");
2397         for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
2398                 const char *unkn = _("(unkn)");
2399                 FFVideoStream *vid = ffvideo[vidx];
2400                 AVStream *st = vid->st;
2401                 AVCodecID codec_id = st->codecpar->codec_id;
2402                 report(_("vid%d (%d),  id 0x%06x:\n"), vid->idx, vid->fidx, codec_id);
2403                 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2404                 report("  video%d %s ", vidx+1, desc ? desc->name : unkn);
2405                 report(" %dx%d %5.2f", vid->width, vid->height, vid->frame_rate);
2406                 AVPixelFormat pix_fmt = (AVPixelFormat)st->codecpar->format;
2407                 const char *pfn = av_get_pix_fmt_name(pix_fmt);
2408                 report(" pix %s\n", pfn ? pfn : unkn);
2409                 enum AVColorSpace space = st->codecpar->color_space;
2410                 const char *nm = av_color_space_name(space);
2411                 report("    color space:%s", nm ? nm : unkn);
2412                 enum AVColorRange range = st->codecpar->color_range;
2413                 const char *rg = av_color_range_name(range);
2414                 report("/ range:%s\n", rg ? rg : unkn);
2415                 double secs = to_secs(st->duration, st->time_base);
2416                 int64_t length = secs * vid->frame_rate + 0.5;
2417                 double ofs = to_secs((vid->nudge - st->start_time), st->time_base);
2418                 int64_t nudge = ofs * vid->frame_rate;
2419                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
2420                 report("    %jd%c%jd frms %0.2f secs", length,ch,nudge, secs);
2421                 int hrs = secs/3600;  secs -= hrs*3600;
2422                 int mins = secs/60;  secs -= mins*60;
2423                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
2424                 double theta = vid->get_rotation_angle();
2425                 if( fabs(theta) > 1 )
2426                         report("    rotation angle: %0.1f\n", theta);
2427         }
2428         if( ffaudio.size() > 0 )
2429                 report("\n%d audio stream%s\n",ffaudio.size(), ffaudio.size()!=1 ? "s" : "");
2430         for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
2431                 FFAudioStream *aud = ffaudio[aidx];
2432                 AVStream *st = aud->st;
2433                 AVCodecID codec_id = st->codecpar->codec_id;
2434                 report(_("aud%d (%d),  id 0x%06x:\n"), aud->idx, aud->fidx, codec_id);
2435                 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2436                 int nch = aud->channels, ch0 = aud->channel0+1;
2437                 report("  audio%d-%d %s", ch0, ch0+nch-1, desc ? desc->name : " (unkn)");
2438                 AVSampleFormat sample_fmt = (AVSampleFormat)st->codecpar->format;
2439                 const char *fmt = av_get_sample_fmt_name(sample_fmt);
2440                 report(" %s %d", fmt, aud->sample_rate);
2441                 int sample_bits = av_get_bits_per_sample(codec_id);
2442                 report(" %dbits\n", sample_bits);
2443                 double secs = to_secs(st->duration, st->time_base);
2444                 int64_t length = secs * aud->sample_rate + 0.5;
2445                 double ofs = to_secs((aud->nudge - st->start_time), st->time_base);
2446                 int64_t nudge = ofs * aud->sample_rate;
2447                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
2448                 report("    %jd%c%jd smpl %0.2f secs", length,ch,nudge, secs);
2449                 int hrs = secs/3600;  secs -= hrs*3600;
2450                 int mins = secs/60;  secs -= mins*60;
2451                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
2452         }
2453         if( fmt_ctx->nb_programs > 0 )
2454                 report("\n%d program%s\n",fmt_ctx->nb_programs, fmt_ctx->nb_programs!=1 ? "s" : "");
2455         for( int i=0; i<(int)fmt_ctx->nb_programs; ++i ) {
2456                 report("program %d", i+1);
2457                 AVProgram *pgrm = fmt_ctx->programs[i];
2458                 for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
2459                         int idx = pgrm->stream_index[j];
2460                         int vidx = ffvideo.size();
2461                         while( --vidx>=0 && ffvideo[vidx]->fidx != idx );
2462                         if( vidx >= 0 ) {
2463                                 report(", vid%d", vidx);
2464                                 continue;
2465                         }
2466                         int aidx = ffaudio.size();
2467                         while( --aidx>=0 && ffaudio[aidx]->fidx != idx );
2468                         if( aidx >= 0 ) {
2469                                 report(", aud%d", aidx);
2470                                 continue;
2471                         }
2472                         report(", (%d)", pgrm->stream_index[j]);
2473                 }
2474                 report("\n");
2475         }
2476         report("\n");
2477         AVDictionaryEntry *tag = 0;
2478         while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
2479                 report("%s=%s\n", tag->key, tag->value);
2480
2481         if( !len ) --cp;
2482         *cp = 0;
2483         return cp - text;
2484 #undef report
2485 }
2486
2487
2488 int FFMPEG::init_decoder(const char *filename)
2489 {
2490         ff_lock("FFMPEG::init_decoder");
2491         av_register_all();
2492         char file_opts[BCTEXTLEN];
2493         strcpy(file_opts, filename);
2494         char *bp = strrchr(file_opts, '/');
2495         if( !bp ) bp = file_opts;
2496         char *sp = strrchr(bp, '.');
2497         if( !sp ) sp = bp + strlen(bp);
2498         FILE *fp = 0;
2499         AVInputFormat *ifmt = 0;
2500         if( sp ) {
2501                 strcpy(sp, ".opts");
2502                 fp = fopen(file_opts, "r");
2503         }
2504         if( fp ) {
2505                 read_options(fp, file_opts, opts);
2506                 fclose(fp);
2507                 AVDictionaryEntry *tag;
2508                 if( (tag=av_dict_get(opts, "format", NULL, 0)) != 0 ) {
2509                         ifmt = av_find_input_format(tag->value);
2510                 }
2511         }
2512         else
2513                 load_options("decode.opts", opts);
2514         AVDictionary *fopts = 0;
2515         av_dict_copy(&fopts, opts, 0);
2516         int ret = avformat_open_input(&fmt_ctx, filename, ifmt, &fopts);
2517         av_dict_free(&fopts);
2518         if( ret >= 0 )
2519                 ret = avformat_find_stream_info(fmt_ctx, NULL);
2520         if( !ret ) {
2521                 decoding = -1;
2522         }
2523         ff_unlock();
2524         return !ret ? 0 : 1;
2525 }
2526
2527 int FFMPEG::open_decoder()
2528 {
2529         struct stat st;
2530         if( stat(fmt_ctx->url, &st) < 0 ) {
2531                 eprintf(_("can't stat file: %s\n"), fmt_ctx->url);
2532                 return 1;
2533         }
2534
2535         int64_t file_bits = 8 * st.st_size;
2536         if( !fmt_ctx->bit_rate && opt_duration > 0 )
2537                 fmt_ctx->bit_rate = file_bits / opt_duration;
2538
2539         int estimated = 0;
2540         if( fmt_ctx->bit_rate > 0 ) {
2541                 for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
2542                         AVStream *st = fmt_ctx->streams[i];
2543                         if( st->duration != AV_NOPTS_VALUE ) continue;
2544                         if( st->time_base.num > INT64_MAX / fmt_ctx->bit_rate ) continue;
2545                         st->duration = av_rescale(file_bits, st->time_base.den,
2546                                 fmt_ctx->bit_rate * (int64_t) st->time_base.num);
2547                         estimated = 1;
2548                 }
2549         }
2550         if( estimated && !(fflags & FF_ESTM_TIMES) ) {
2551                 fflags |= FF_ESTM_TIMES;
2552                 printf("FFMPEG::open_decoder: some stream times estimated: %s\n",
2553                         fmt_ctx->url);
2554         }
2555
2556         ff_lock("FFMPEG::open_decoder");
2557         int ret = 0, bad_time = 0;
2558         for( int i=0; !ret && i<(int)fmt_ctx->nb_streams; ++i ) {
2559                 AVStream *st = fmt_ctx->streams[i];
2560                 if( st->duration == AV_NOPTS_VALUE ) bad_time = 1;
2561                 AVCodecParameters *avpar = st->codecpar;
2562                 const AVCodecDescriptor *codec_desc = avcodec_descriptor_get(avpar->codec_id);
2563                 if( !codec_desc ) continue;
2564                 switch( avpar->codec_type ) {
2565                 case AVMEDIA_TYPE_VIDEO: {
2566                         if( avpar->width < 1 ) continue;
2567                         if( avpar->height < 1 ) continue;
2568                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
2569                         if( framerate.num < 1 ) continue;
2570                         has_video = 1;
2571                         int vidx = ffvideo.size();
2572                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, i);
2573                         vstrm_index.append(ffidx(vidx, 0));
2574                         ffvideo.append(vid);
2575                         vid->width = avpar->width;
2576                         vid->height = avpar->height;
2577                         vid->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
2578                         switch( avpar->color_range ) {
2579                         case AVCOL_RANGE_MPEG:
2580                                 vid->color_range = BC_COLORS_MPEG;
2581                                 break;
2582                         case AVCOL_RANGE_JPEG:
2583                                 vid->color_range = BC_COLORS_JPEG;
2584                                 break;
2585                         default:
2586                                 vid->color_range = !file_base ? BC_COLORS_JPEG :
2587                                         file_base->file->preferences->yuv_color_range;
2588                                 break;
2589                         }
2590                         switch( avpar->color_space ) {
2591                         case AVCOL_SPC_BT470BG:
2592                         case AVCOL_SPC_SMPTE170M:
2593                                 vid->color_space = BC_COLORS_BT601;
2594                                 break;
2595                         case AVCOL_SPC_BT709:
2596                                 vid->color_space = BC_COLORS_BT709;
2597                                 break;
2598                         case AVCOL_SPC_BT2020_NCL:
2599                         case AVCOL_SPC_BT2020_CL:
2600                                 vid->color_space = BC_COLORS_BT2020;
2601                                 break;
2602                         default:
2603                                 vid->color_space = !file_base ? BC_COLORS_BT601 :
2604                                         file_base->file->preferences->yuv_color_space;
2605                                 break;
2606                         }
2607                         double secs = to_secs(st->duration, st->time_base);
2608                         vid->length = secs * vid->frame_rate;
2609                         vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den;
2610                         vid->nudge = st->start_time;
2611                         vid->reading = -1;
2612                         ret = vid->create_filter(opt_video_filter);
2613                         break; }
2614                 case AVMEDIA_TYPE_AUDIO: {
2615                         if( avpar->channels < 1 ) continue;
2616                         if( avpar->sample_rate < 1 ) continue;
2617                         has_audio = 1;
2618                         int aidx = ffaudio.size();
2619                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, i);
2620                         ffaudio.append(aud);
2621                         aud->channel0 = astrm_index.size();
2622                         aud->channels = avpar->channels;
2623                         for( int ch=0; ch<aud->channels; ++ch )
2624                                 astrm_index.append(ffidx(aidx, ch));
2625                         aud->sample_rate = avpar->sample_rate;
2626                         double secs = to_secs(st->duration, st->time_base);
2627                         aud->length = secs * aud->sample_rate;
2628                         aud->init_swr(aud->channels, avpar->format, aud->sample_rate);
2629                         aud->nudge = st->start_time;
2630                         aud->reading = -1;
2631                         ret = aud->create_filter(opt_audio_filter);
2632                         break; }
2633                 default: break;
2634                 }
2635         }
2636         if( bad_time && !(fflags & FF_BAD_TIMES) ) {
2637                 fflags |= FF_BAD_TIMES;
2638                 printf(_("FFMPEG::open_decoder: some stream have bad times: %s\n"),
2639                         fmt_ctx->url);
2640         }
2641         ff_unlock();
2642         return ret < 0 ? -1 : 0;
2643 }
2644
2645
2646 int FFMPEG::init_encoder(const char *filename)
2647 {
2648 // try access first for named pipes
2649         int ret = access(filename, W_OK);
2650         if( ret ) {
2651                 int fd = ::open(filename,O_WRONLY);
2652                 if( fd < 0 ) fd = open(filename,O_WRONLY+O_CREAT,0666);
2653                 if( fd >= 0 ) { close(fd);  ret = 0; }
2654         }
2655         if( ret ) {
2656                 eprintf(_("bad file path: %s\n"), filename);
2657                 return 1;
2658         }
2659         ret = get_file_format();
2660         if( ret > 0 ) {
2661                 eprintf(_("bad file format: %s\n"), filename);
2662                 return 1;
2663         }
2664         if( ret < 0 ) {
2665                 eprintf(_("mismatch audio/video file format: %s\n"), filename);
2666                 return 1;
2667         }
2668         ff_lock("FFMPEG::init_encoder");
2669         av_register_all();
2670         char format[BCSTRLEN];
2671         if( get_format(format, "format", file_format) )
2672                 strcpy(format, file_format);
2673         avformat_alloc_output_context2(&fmt_ctx, 0, format, filename);
2674         if( !fmt_ctx ) {
2675                 eprintf(_("failed: %s\n"), filename);
2676                 ret = 1;
2677         }
2678         if( !ret ) {
2679                 encoding = -1;
2680                 load_options("encode.opts", opts);
2681         }
2682         ff_unlock();
2683         return ret;
2684 }
2685
2686 int FFMPEG::open_encoder(const char *type, const char *spec)
2687 {
2688
2689         Asset *asset = file_base->asset;
2690         char *filename = asset->path;
2691         AVDictionary *sopts = 0;
2692         av_dict_copy(&sopts, opts, 0);
2693         char option_path[BCTEXTLEN];
2694         set_option_path(option_path, "%s/%s.opts", type, type);
2695         read_options(option_path, sopts);
2696         get_option_path(option_path, type, spec);
2697         char format_name[BCSTRLEN], codec_name[BCTEXTLEN], bsfilter[BCTEXTLEN];
2698         if( get_encoder(option_path, format_name, codec_name, bsfilter) ) {
2699                 eprintf(_("get_encoder failed %s:%s\n"), option_path, filename);
2700                 return 1;
2701         }
2702
2703 #ifdef HAVE_DV
2704         if( !strcmp(codec_name, CODEC_TAG_DVSD) ) strcpy(codec_name, "dv");
2705 #endif
2706         else if( !strcmp(codec_name, CODEC_TAG_MJPEG) ) strcpy(codec_name, "mjpeg");
2707         else if( !strcmp(codec_name, CODEC_TAG_JPEG) ) strcpy(codec_name, "jpeg");
2708
2709         int ret = 0;
2710         ff_lock("FFMPEG::open_encoder");
2711         FFStream *fst = 0;
2712         AVStream *st = 0;
2713         AVCodecContext *ctx = 0;
2714
2715         const AVCodecDescriptor *codec_desc = 0;
2716         AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
2717         if( !codec ) {
2718                 eprintf(_("cant find codec %s:%s\n"), codec_name, filename);
2719                 ret = 1;
2720         }
2721         if( !ret ) {
2722                 codec_desc = avcodec_descriptor_get(codec->id);
2723                 if( !codec_desc ) {
2724                         eprintf(_("unknown codec %s:%s\n"), codec_name, filename);
2725                         ret = 1;
2726                 }
2727         }
2728         if( !ret ) {
2729                 st = avformat_new_stream(fmt_ctx, 0);
2730                 if( !st ) {
2731                         eprintf(_("cant create stream %s:%s\n"), codec_name, filename);
2732                         ret = 1;
2733                 }
2734         }
2735         if( !ret ) {
2736                 switch( codec_desc->type ) {
2737                 case AVMEDIA_TYPE_AUDIO: {
2738                         if( has_audio ) {
2739                                 eprintf(_("duplicate audio %s:%s\n"), codec_name, filename);
2740                                 ret = 1;
2741                                 break;
2742                         }
2743                         if( scan_options(asset->ff_audio_options, sopts, st) ) {
2744                                 eprintf(_("bad audio options %s:%s\n"), codec_name, filename);
2745                                 ret = 1;
2746                                 break;
2747                         }
2748                         has_audio = 1;
2749                         ctx = avcodec_alloc_context3(codec);
2750                         if( asset->ff_audio_bitrate > 0 ) {
2751                                 ctx->bit_rate = asset->ff_audio_bitrate;
2752                                 char arg[BCSTRLEN];
2753                                 sprintf(arg, "%d", asset->ff_audio_bitrate);
2754                                 av_dict_set(&sopts, "b", arg, 0);
2755                         }
2756                         else if( asset->ff_audio_quality >= 0 ) {
2757                                 ctx->global_quality = asset->ff_audio_quality * FF_QP2LAMBDA;
2758                                 ctx->qmin    = ctx->qmax =  asset->ff_audio_quality;
2759                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
2760                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
2761                                 ctx->flags |= AV_CODEC_FLAG_QSCALE;
2762                                 char arg[BCSTRLEN];
2763                                 av_dict_set(&sopts, "flags", "+qscale", 0);
2764                                 sprintf(arg, "%d", asset->ff_audio_quality);
2765                                 av_dict_set(&sopts, "qscale", arg, 0);
2766                                 sprintf(arg, "%d", ctx->global_quality);
2767                                 av_dict_set(&sopts, "global_quality", arg, 0);
2768                         }
2769                         int aidx = ffaudio.size();
2770                         int fidx = aidx + ffvideo.size();
2771                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, fidx);
2772                         aud->avctx = ctx;  ffaudio.append(aud);  fst = aud;
2773                         aud->sample_rate = asset->sample_rate;
2774                         ctx->channels = aud->channels = asset->channels;
2775                         for( int ch=0; ch<aud->channels; ++ch )
2776                                 astrm_index.append(ffidx(aidx, ch));
2777                         ctx->channel_layout =  av_get_default_channel_layout(ctx->channels);
2778                         ctx->sample_rate = check_sample_rate(codec, asset->sample_rate);
2779                         if( !ctx->sample_rate ) {
2780                                 eprintf(_("check_sample_rate failed %s\n"), filename);
2781                                 ret = 1;
2782                                 break;
2783                         }
2784                         ctx->time_base = st->time_base = (AVRational){1, aud->sample_rate};
2785                         AVSampleFormat sample_fmt = av_get_sample_fmt(asset->ff_sample_format);
2786                         if( sample_fmt == AV_SAMPLE_FMT_NONE )
2787                                 sample_fmt = codec->sample_fmts ? codec->sample_fmts[0] : AV_SAMPLE_FMT_S16;
2788                         ctx->sample_fmt = sample_fmt;
2789                         uint64_t layout = av_get_default_channel_layout(ctx->channels);
2790                         aud->resample_context = swr_alloc_set_opts(NULL,
2791                                 layout, ctx->sample_fmt, aud->sample_rate,
2792                                 layout, AV_SAMPLE_FMT_FLT, ctx->sample_rate,
2793                                 0, NULL);
2794                         swr_init(aud->resample_context);
2795                         aud->writing = -1;
2796                         break; }
2797                 case AVMEDIA_TYPE_VIDEO: {
2798                         if( has_video ) {
2799                                 eprintf(_("duplicate video %s:%s\n"), codec_name, filename);
2800                                 ret = 1;
2801                                 break;
2802                         }
2803                         if( scan_options(asset->ff_video_options, sopts, st) ) {
2804                                 eprintf(_("bad video options %s:%s\n"), codec_name, filename);
2805                                 ret = 1;
2806                                 break;
2807                         }
2808                         has_video = 1;
2809                         ctx = avcodec_alloc_context3(codec);
2810                         if( asset->ff_video_bitrate > 0 ) {
2811                                 ctx->bit_rate = asset->ff_video_bitrate;
2812                                 char arg[BCSTRLEN];
2813                                 sprintf(arg, "%d", asset->ff_video_bitrate);
2814                                 av_dict_set(&sopts, "b", arg, 0);
2815                         }
2816                         else if( asset->ff_video_quality >= 0 ) {
2817                                 ctx->global_quality = asset->ff_video_quality * FF_QP2LAMBDA;
2818                                 ctx->qmin    = ctx->qmax =  asset->ff_video_quality;
2819                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
2820                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
2821                                 ctx->flags |= AV_CODEC_FLAG_QSCALE;
2822                                 char arg[BCSTRLEN];
2823                                 av_dict_set(&sopts, "flags", "+qscale", 0);
2824                                 sprintf(arg, "%d", asset->ff_video_quality);
2825                                 av_dict_set(&sopts, "qscale", arg, 0);
2826                                 sprintf(arg, "%d", ctx->global_quality);
2827                                 av_dict_set(&sopts, "global_quality", arg, 0);
2828                         }
2829                         int vidx = ffvideo.size();
2830                         int fidx = vidx + ffaudio.size();
2831                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, fidx);
2832                         vstrm_index.append(ffidx(vidx, 0));
2833                         vid->avctx = ctx;  ffvideo.append(vid);  fst = vid;
2834                         vid->width = asset->width;
2835                         vid->height = asset->height;
2836                         vid->frame_rate = asset->frame_rate;
2837                         if( (vid->color_range = asset->ff_color_range) < 0 )
2838                                 vid->color_range = file_base->file->preferences->yuv_color_range;
2839                         switch( vid->color_range ) {
2840                         case BC_COLORS_MPEG:  ctx->color_range = AVCOL_RANGE_MPEG;  break;
2841                         case BC_COLORS_JPEG:  ctx->color_range = AVCOL_RANGE_JPEG;  break;
2842                         }
2843                         if( (vid->color_space = asset->ff_color_space) < 0 )
2844                                 vid->color_space = file_base->file->preferences->yuv_color_space;
2845                         switch( vid->color_space ) {
2846                         case BC_COLORS_BT601:  ctx->colorspace = AVCOL_SPC_SMPTE170M;  break;
2847                         case BC_COLORS_BT709:  ctx->colorspace = AVCOL_SPC_BT709;      break;
2848                         case BC_COLORS_BT2020: ctx->colorspace = AVCOL_SPC_BT2020_NCL; break;
2849                         }
2850                         AVPixelFormat pix_fmt = av_get_pix_fmt(asset->ff_pixel_format);
2851                         if( opt_hw_dev != 0 ) {
2852                                 AVHWDeviceType hw_type = vid->encode_hw_activate(opt_hw_dev);
2853                                 switch( hw_type ) {
2854                                 case AV_HWDEVICE_TYPE_VAAPI:
2855                                         pix_fmt = AV_PIX_FMT_VAAPI;
2856                                         break;
2857                                 case AV_HWDEVICE_TYPE_NONE:
2858                                 default: break;
2859                                 }
2860                         }
2861                         if( pix_fmt == AV_PIX_FMT_NONE )
2862                                 pix_fmt = codec->pix_fmts ? codec->pix_fmts[0] : AV_PIX_FMT_YUV420P;
2863                         ctx->pix_fmt = pix_fmt;
2864
2865                         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
2866                         int mask_w = (1<<desc->log2_chroma_w)-1;
2867                         ctx->width = (vid->width+mask_w) & ~mask_w;
2868                         int mask_h = (1<<desc->log2_chroma_h)-1;
2869                         ctx->height = (vid->height+mask_h) & ~mask_h;
2870                         ctx->sample_aspect_ratio = to_sample_aspect_ratio(asset);
2871                         AVRational frame_rate = check_frame_rate(codec->supported_framerates, vid->frame_rate);
2872                         if( !frame_rate.num || !frame_rate.den ) {
2873                                 eprintf(_("check_frame_rate failed %s\n"), filename);
2874                                 ret = 1;
2875                                 break;
2876                         }
2877                         av_reduce(&frame_rate.num, &frame_rate.den,
2878                                 frame_rate.num, frame_rate.den, INT_MAX);
2879                         ctx->framerate = (AVRational) { frame_rate.num, frame_rate.den };
2880                         ctx->time_base = (AVRational) { frame_rate.den, frame_rate.num };
2881                         st->avg_frame_rate = frame_rate;
2882                         st->time_base = ctx->time_base;
2883                         vid->writing = -1;
2884                         vid->interlaced = asset->interlace_mode == ILACE_MODE_TOP_FIRST ||
2885                                 asset->interlace_mode == ILACE_MODE_BOTTOM_FIRST ? 1 : 0;
2886                         vid->top_field_first = asset->interlace_mode == ILACE_MODE_TOP_FIRST ? 1 : 0;
2887                         break; }
2888                 default:
2889                         eprintf(_("not audio/video, %s:%s\n"), codec_name, filename);
2890                         ret = 1;
2891                 }
2892
2893                 if( ctx ) {
2894                         AVDictionaryEntry *tag;
2895                         if( (tag=av_dict_get(sopts, "cin_stats_filename", NULL, 0)) != 0 ) {
2896                                 char suffix[BCSTRLEN];  sprintf(suffix,"-%d.log",fst->fidx);
2897                                 fst->stats_filename = cstrcat(2, tag->value, suffix);
2898                         }
2899                         if( (tag=av_dict_get(sopts, "flags", NULL, 0)) != 0 ) {
2900                                 int pass = fst->pass;
2901                                 char *cp = tag->value;
2902                                 while( *cp ) {
2903                                         int ch = *cp++, pfx = ch=='-' ? -1 : ch=='+' ? 1 : 0;
2904                                         if( !isalnum(!pfx ? ch : (ch=*cp++)) ) continue;
2905                                         char id[BCSTRLEN], *bp = id, *ep = bp+sizeof(id)-1;
2906                                         for( *bp++=ch; isalnum(ch=*cp); ++cp )
2907                                                 if( bp < ep ) *bp++ = ch;
2908                                         *bp = 0;
2909                                         if( !strcmp(id, "pass1") ) {
2910                                                 pass = pfx<0 ? (pass&~1) : pfx>0 ? (pass|1) : 1;
2911                                         }
2912                                         else if( !strcmp(id, "pass2") ) {
2913                                                 pass = pfx<0 ? (pass&~2) : pfx>0 ? (pass|2) : 2;
2914                                         }
2915                                 }
2916                                 if( (fst->pass=pass) ) {
2917                                         if( pass & 1 ) ctx->flags |= AV_CODEC_FLAG_PASS1;
2918                                         if( pass & 2 ) ctx->flags |= AV_CODEC_FLAG_PASS2;
2919                                 }
2920                         }
2921                 }
2922         }
2923         if( !ret ) {
2924                 if( fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER )
2925                         ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
2926                 if( fst->stats_filename && (ret=fst->init_stats_file()) )
2927                         eprintf(_("error: stats file = %s\n"), fst->stats_filename);
2928         }
2929         if( !ret ) {
2930                 av_dict_set(&sopts, "cin_bitrate", 0, 0);
2931                 av_dict_set(&sopts, "cin_quality", 0, 0);
2932
2933                 if( !av_dict_get(sopts, "threads", NULL, 0) )
2934                         ctx->thread_count = ff_cpus();
2935                 ret = avcodec_open2(ctx, codec, &sopts);
2936                 if( ret >= 0 ) {
2937                         ret = avcodec_parameters_from_context(st->codecpar, ctx);
2938                         if( ret < 0 )
2939                                 fprintf(stderr, "Could not copy the stream parameters\n");
2940                 }
2941                 if( ret >= 0 ) {
2942 _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
2943                         ret = avcodec_copy_context(st->codec, ctx);
2944 _Pragma("GCC diagnostic warning \"-Wdeprecated-declarations\"")
2945                         if( ret < 0 )
2946                                 fprintf(stderr, "Could not copy the stream context\n");
2947                 }
2948                 if( ret < 0 ) {
2949                         ff_err(ret,"FFMPEG::open_encoder");
2950                         eprintf(_("open failed %s:%s\n"), codec_name, filename);
2951                         ret = 1;
2952                 }
2953                 else
2954                         ret = 0;
2955         }
2956         if( !ret && fst && bsfilter[0] ) {
2957                 ret = av_bsf_list_parse_str(bsfilter, &fst->bsfc);
2958                 if( ret < 0 ) {
2959                         ff_err(ret,"FFMPEG::open_encoder");
2960                         eprintf(_("bitstream filter failed %s:\n%s\n"), filename, bsfilter);
2961                         ret = 1;
2962                 }
2963                 else
2964                         ret = 0;
2965         }
2966
2967         if( !ret )
2968                 start_muxer();
2969
2970         ff_unlock();
2971         av_dict_free(&sopts);
2972         return ret;
2973 }
2974
2975 int FFMPEG::close_encoder()
2976 {
2977         stop_muxer();
2978         if( encoding > 0 ) {
2979                 av_write_trailer(fmt_ctx);
2980                 if( !(fmt_ctx->flags & AVFMT_NOFILE) )
2981                         avio_closep(&fmt_ctx->pb);
2982         }
2983         encoding = 0;
2984         return 0;
2985 }
2986
2987 int FFMPEG::decode_activate()
2988 {
2989         if( decoding < 0 ) {
2990                 decoding = 0;
2991                 for( int vidx=0; vidx<ffvideo.size(); ++vidx )
2992                         ffvideo[vidx]->nudge = AV_NOPTS_VALUE;
2993                 for( int aidx=0; aidx<ffaudio.size(); ++aidx )
2994                         ffaudio[aidx]->nudge = AV_NOPTS_VALUE;
2995                 // set nudges for each program stream set
2996                 const int64_t min_nudge = INT64_MIN+1;
2997                 int npgrms = fmt_ctx->nb_programs;
2998                 for( int i=0; i<npgrms; ++i ) {
2999                         AVProgram *pgrm = fmt_ctx->programs[i];
3000                         // first start time video stream
3001                         int64_t vstart_time = min_nudge, astart_time = min_nudge;
3002                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
3003                                 int fidx = pgrm->stream_index[j];
3004                                 AVStream *st = fmt_ctx->streams[fidx];
3005                                 AVCodecParameters *avpar = st->codecpar;
3006                                 if( avpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
3007                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
3008                                         if( vstart_time < st->start_time )
3009                                                 vstart_time = st->start_time;
3010                                         continue;
3011                                 }
3012                                 if( avpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
3013                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
3014                                         if( astart_time < st->start_time )
3015                                                 astart_time = st->start_time;
3016                                         continue;
3017                                 }
3018                         }
3019                         //since frame rate is much more grainy than sample rate, it is better to
3020                         // align using video, so that total absolute error is minimized.
3021                         int64_t nudge = vstart_time > min_nudge ? vstart_time :
3022                                 astart_time > min_nudge ? astart_time : AV_NOPTS_VALUE;
3023                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
3024                                 int fidx = pgrm->stream_index[j];
3025                                 AVStream *st = fmt_ctx->streams[fidx];
3026                                 AVCodecParameters *avpar = st->codecpar;
3027                                 if( avpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
3028                                         for( int k=0; k<ffvideo.size(); ++k ) {
3029                                                 if( ffvideo[k]->fidx != fidx ) continue;
3030                                                 ffvideo[k]->nudge = nudge;
3031                                         }
3032                                         continue;
3033                                 }
3034                                 if( avpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
3035                                         for( int k=0; k<ffaudio.size(); ++k ) {
3036                                                 if( ffaudio[k]->fidx != fidx ) continue;
3037                                                 ffaudio[k]->nudge = nudge;
3038                                         }
3039                                         continue;
3040                                 }
3041                         }
3042                 }
3043                 // set nudges for any streams not yet set
3044                 int64_t vstart_time = min_nudge, astart_time = min_nudge;
3045                 int nstreams = fmt_ctx->nb_streams;
3046                 for( int i=0; i<nstreams; ++i ) {
3047                         AVStream *st = fmt_ctx->streams[i];
3048                         AVCodecParameters *avpar = st->codecpar;
3049                         switch( avpar->codec_type ) {
3050                         case AVMEDIA_TYPE_VIDEO: {
3051                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
3052                                 int vidx = ffvideo.size();
3053                                 while( --vidx >= 0 && ffvideo[vidx]->fidx != i );
3054                                 if( vidx < 0 ) continue;
3055                                 if( ffvideo[vidx]->nudge != AV_NOPTS_VALUE ) continue;
3056                                 if( vstart_time < st->start_time )
3057                                         vstart_time = st->start_time;
3058                                 break; }
3059                         case AVMEDIA_TYPE_AUDIO: {
3060                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
3061                                 int aidx = ffaudio.size();
3062                                 while( --aidx >= 0 && ffaudio[aidx]->fidx != i );
3063                                 if( aidx < 0 ) continue;
3064                                 if( ffaudio[aidx]->frame_sz < avpar->frame_size )
3065                                         ffaudio[aidx]->frame_sz = avpar->frame_size;
3066                                 if( ffaudio[aidx]->nudge != AV_NOPTS_VALUE ) continue;
3067                                 if( astart_time < st->start_time )
3068                                         astart_time = st->start_time;
3069                                 break; }
3070                         default: break;
3071                         }
3072                 }
3073                 int64_t nudge = vstart_time > min_nudge ? vstart_time :
3074                         astart_time > min_nudge ? astart_time : 0;
3075                 for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
3076                         if( ffvideo[vidx]->nudge == AV_NOPTS_VALUE )
3077                                 ffvideo[vidx]->nudge = nudge;
3078                 }
3079                 for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
3080                         if( ffaudio[aidx]->nudge == AV_NOPTS_VALUE )
3081                                 ffaudio[aidx]->nudge = nudge;
3082                 }
3083                 decoding = 1;
3084         }
3085         return decoding;
3086 }
3087
3088 int FFMPEG::encode_activate()
3089 {
3090         int ret = 0;
3091         if( encoding < 0 ) {
3092                 encoding = 0;
3093                 if( !(fmt_ctx->flags & AVFMT_NOFILE) &&
3094                     (ret=avio_open(&fmt_ctx->pb, fmt_ctx->url, AVIO_FLAG_WRITE)) < 0 ) {
3095                         ff_err(ret, "FFMPEG::encode_activate: err opening : %s\n",
3096                                 fmt_ctx->url);
3097                         return -1;
3098                 }
3099                 if( !strcmp(file_format, "image2") ) {
3100                         Asset *asset = file_base->asset;
3101                         const char *filename = asset->path;
3102                         FILE *fp = fopen(filename,"w");
3103                         if( !fp ) {
3104                                 eprintf(_("Cant write image2 header file: %s\n  %m"), filename);
3105                                 return 1;
3106                         }
3107                         fprintf(fp, "IMAGE2\n");
3108                         fprintf(fp, "# Frame rate: %f\n", asset->frame_rate);
3109                         fprintf(fp, "# Width: %d\n", asset->width);
3110                         fprintf(fp, "# Height: %d\n", asset->height);
3111                         fclose(fp);
3112                 }
3113                 int prog_id = 1;
3114                 AVProgram *prog = av_new_program(fmt_ctx, prog_id);
3115                 for( int i=0; i< ffvideo.size(); ++i )
3116                         av_program_add_stream_index(fmt_ctx, prog_id, ffvideo[i]->fidx);
3117                 for( int i=0; i< ffaudio.size(); ++i )
3118                         av_program_add_stream_index(fmt_ctx, prog_id, ffaudio[i]->fidx);
3119                 int pi = fmt_ctx->nb_programs;
3120                 while(  --pi >= 0 && fmt_ctx->programs[pi]->id != prog_id );
3121                 AVDictionary **meta = &prog->metadata;
3122                 av_dict_set(meta, "service_provider", "cin5", 0);
3123                 const char *path = fmt_ctx->url, *bp = strrchr(path,'/');
3124                 if( bp ) path = bp + 1;
3125                 av_dict_set(meta, "title", path, 0);
3126
3127                 if( ffaudio.size() ) {
3128                         const char *ep = getenv("CIN_AUDIO_LANG"), *lp = 0;
3129                         if( !ep && (lp=getenv("LANG")) ) { // some are guesses
3130                                 static struct { const char lc[3], lng[4]; } lcode[] = {
3131                                         { "en", "eng" }, { "de", "ger" }, { "es", "spa" },
3132                                         { "eu", "bas" }, { "fr", "fre" }, { "el", "gre" },
3133                                         { "hi", "hin" }, { "it", "ita" }, { "ja", "jap" },
3134                                         { "ko", "kor" }, { "du", "dut" }, { "pl", "pol" },
3135                                         { "pt", "por" }, { "ru", "rus" }, { "sl", "slv" },
3136                                         { "uk", "ukr" }, { "vi", "vie" }, { "zh", "chi" },
3137                                 };
3138                                 for( int i=sizeof(lcode)/sizeof(lcode[0]); --i>=0 && !ep; )
3139                                         if( !strncmp(lcode[i].lc,lp,2) ) ep = lcode[i].lng;
3140                         }
3141                         if( !ep ) ep = "und";
3142                         char lang[5];
3143                         strncpy(lang,ep,3);  lang[3] = 0;
3144                         AVStream *st = ffaudio[0]->st;
3145                         av_dict_set(&st->metadata,"language",lang,0);
3146                 }
3147
3148                 AVDictionary *fopts = 0;
3149                 char option_path[BCTEXTLEN];
3150                 set_option_path(option_path, "format/%s", file_format);
3151                 read_options(option_path, fopts, 1);
3152                 av_dict_copy(&fopts, opts, 0);
3153                 if( scan_options(file_base->asset->ff_format_options, fopts, 0) ) {
3154                         eprintf(_("bad format options %s\n"), file_base->asset->path);
3155                         ret = -1;
3156                 }
3157                 if( ret >= 0 )
3158                         ret = avformat_write_header(fmt_ctx, &fopts);
3159                 if( ret < 0 ) {
3160                         ff_err(ret, "FFMPEG::encode_activate: write header failed %s\n",
3161                                 fmt_ctx->url);
3162                         return -1;
3163                 }
3164                 av_dict_free(&fopts);
3165                 encoding = 1;
3166         }
3167         return encoding;
3168 }
3169
3170
3171 int FFMPEG::audio_seek(int stream, int64_t pos)
3172 {
3173         int aidx = astrm_index[stream].st_idx;
3174         FFAudioStream *aud = ffaudio[aidx];
3175         aud->audio_seek(pos);
3176         return 0;
3177 }
3178
3179 int FFMPEG::video_seek(int stream, int64_t pos)
3180 {
3181         int vidx = vstrm_index[stream].st_idx;
3182         FFVideoStream *vid = ffvideo[vidx];
3183         vid->video_seek(pos);
3184         return 0;
3185 }
3186
3187
3188 int FFMPEG::decode(int chn, int64_t pos, double *samples, int len)
3189 {
3190         if( !has_audio || chn >= astrm_index.size() ) return -1;
3191         int aidx = astrm_index[chn].st_idx;
3192         FFAudioStream *aud = ffaudio[aidx];
3193         if( aud->load(pos, len) < len ) return -1;
3194         int ch = astrm_index[chn].st_ch;
3195         int ret = aud->read(samples,len,ch);
3196         return ret;
3197 }
3198
3199 int FFMPEG::decode(int layer, int64_t pos, VFrame *vframe)
3200 {
3201         if( !has_video || layer >= vstrm_index.size() ) return -1;
3202         int vidx = vstrm_index[layer].st_idx;
3203         FFVideoStream *vid = ffvideo[vidx];
3204         return vid->load(vframe, pos);
3205 }
3206
3207
3208 int FFMPEG::encode(int stream, double **samples, int len)
3209 {
3210         FFAudioStream *aud = ffaudio[stream];
3211         return aud->encode(samples, len);
3212 }
3213
3214
3215 int FFMPEG::encode(int stream, VFrame *frame)
3216 {
3217         FFVideoStream *vid = ffvideo[stream];
3218         return vid->encode(frame);
3219 }
3220
3221 void FFMPEG::start_muxer()
3222 {
3223         if( !running() ) {
3224                 done = 0;
3225                 start();
3226         }
3227 }
3228
3229 void FFMPEG::stop_muxer()
3230 {
3231         if( running() ) {
3232                 done = 1;
3233                 mux_lock->unlock();
3234         }
3235         join();
3236 }
3237
3238 void FFMPEG::flow_off()
3239 {
3240         if( !flow ) return;
3241         flow_lock->lock("FFMPEG::flow_off");
3242         flow = 0;
3243 }
3244
3245 void FFMPEG::flow_on()
3246 {
3247         if( flow ) return;
3248         flow = 1;
3249         flow_lock->unlock();
3250 }
3251
3252 void FFMPEG::flow_ctl()
3253 {
3254         while( !flow ) {
3255                 flow_lock->lock("FFMPEG::flow_ctl");
3256                 flow_lock->unlock();
3257         }
3258 }
3259
3260 int FFMPEG::mux_audio(FFrame *frm)
3261 {
3262         FFStream *fst = frm->fst;
3263         AVCodecContext *ctx = fst->avctx;
3264         AVFrame *frame = *frm;
3265         AVRational tick_rate = {1, ctx->sample_rate};
3266         frame->pts = av_rescale_q(frm->position, tick_rate, ctx->time_base);
3267         int ret = fst->encode_frame(frame);
3268         if( ret < 0 )
3269                 ff_err(ret, "FFMPEG::mux_audio");
3270         return ret >= 0 ? 0 : 1;
3271 }
3272
3273 int FFMPEG::mux_video(FFrame *frm)
3274 {
3275         FFStream *fst = frm->fst;
3276         AVFrame *frame = *frm;
3277         frame->pts = frm->position;
3278         int ret = fst->encode_frame(frame);
3279         if( ret < 0 )
3280                 ff_err(ret, "FFMPEG::mux_video");
3281         return ret >= 0 ? 0 : 1;
3282 }
3283
3284 void FFMPEG::mux()
3285 {
3286         for(;;) {
3287                 double atm = -1, vtm = -1;
3288                 FFrame *afrm = 0, *vfrm = 0;
3289                 int demand = 0;
3290                 for( int i=0; i<ffaudio.size(); ++i ) {  // earliest audio
3291                         FFStream *fst = ffaudio[i];
3292                         if( fst->frm_count < 3 ) { demand = 1; flow_on(); }
3293                         FFrame *frm = fst->frms.first;
3294                         if( !frm ) { if( !done ) return; continue; }
3295                         double tm = to_secs(frm->position, fst->avctx->time_base);
3296                         if( atm < 0 || tm < atm ) { atm = tm;  afrm = frm; }
3297                 }
3298                 for( int i=0; i<ffvideo.size(); ++i ) {  // earliest video
3299                         FFStream *fst = ffvideo[i];
3300                         if( fst->frm_count < 2 ) { demand = 1; flow_on(); }
3301                         FFrame *frm = fst->frms.first;
3302                         if( !frm ) { if( !done ) return; continue; }
3303                         double tm = to_secs(frm->position, fst->avctx->time_base);
3304                         if( vtm < 0 || tm < vtm ) { vtm = tm;  vfrm = frm; }
3305                 }
3306                 if( !demand ) flow_off();
3307                 if( !afrm && !vfrm ) break;
3308                 int v = !afrm ? -1 : !vfrm ? 1 : av_compare_ts(
3309                         vfrm->position, vfrm->fst->avctx->time_base,
3310                         afrm->position, afrm->fst->avctx->time_base);
3311                 FFrame *frm = v <= 0 ? vfrm : afrm;
3312                 if( frm == afrm ) mux_audio(frm);
3313                 if( frm == vfrm ) mux_video(frm);
3314                 frm->dequeue();
3315                 delete frm;
3316         }
3317 }
3318
3319 void FFMPEG::run()
3320 {
3321         while( !done ) {
3322                 mux_lock->lock("FFMPEG::run");
3323                 if( !done ) mux();
3324         }
3325         for( int i=0; i<ffaudio.size(); ++i )
3326                 ffaudio[i]->drain();
3327         for( int i=0; i<ffvideo.size(); ++i )
3328                 ffvideo[i]->drain();
3329         mux();
3330         for( int i=0; i<ffaudio.size(); ++i )
3331                 ffaudio[i]->flush();
3332         for( int i=0; i<ffvideo.size(); ++i )
3333                 ffvideo[i]->flush();
3334 }
3335
3336
3337 int FFMPEG::ff_total_audio_channels()
3338 {
3339         return astrm_index.size();
3340 }
3341
3342 int FFMPEG::ff_total_astreams()
3343 {
3344         return ffaudio.size();
3345 }
3346
3347 int FFMPEG::ff_audio_channels(int stream)
3348 {
3349         return ffaudio[stream]->channels;
3350 }
3351
3352 int FFMPEG::ff_sample_rate(int stream)
3353 {
3354         return ffaudio[stream]->sample_rate;
3355 }
3356
3357 const char* FFMPEG::ff_audio_format(int stream)
3358 {
3359         AVStream *st = ffaudio[stream]->st;
3360         AVCodecID id = st->codecpar->codec_id;
3361         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
3362         return desc ? desc->name : _("Unknown");
3363 }
3364
3365 int FFMPEG::ff_audio_pid(int stream)
3366 {
3367         return ffaudio[stream]->st->id;
3368 }
3369
3370 int64_t FFMPEG::ff_audio_samples(int stream)
3371 {
3372         return ffaudio[stream]->length;
3373 }
3374
3375 // find audio astream/channels with this program,
3376 //   or all program audio channels (astream=-1)
3377 int FFMPEG::ff_audio_for_video(int vstream, int astream, int64_t &channel_mask)
3378 {
3379         channel_mask = 0;
3380         int pidx = -1;
3381         int vidx = ffvideo[vstream]->fidx;
3382         // find first program with this video stream
3383         for( int i=0; pidx<0 && i<(int)fmt_ctx->nb_programs; ++i ) {
3384                 AVProgram *pgrm = fmt_ctx->programs[i];
3385                 for( int j=0;  pidx<0 && j<(int)pgrm->nb_stream_indexes; ++j ) {
3386                         int st_idx = pgrm->stream_index[j];
3387                         AVStream *st = fmt_ctx->streams[st_idx];
3388                         if( st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO ) continue;
3389                         if( st_idx == vidx ) pidx = i;
3390                 }
3391         }
3392         if( pidx < 0 ) return -1;
3393         int ret = -1;
3394         int64_t channels = 0;
3395         AVProgram *pgrm = fmt_ctx->programs[pidx];
3396         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
3397                 int aidx = pgrm->stream_index[j];
3398                 AVStream *st = fmt_ctx->streams[aidx];
3399                 if( st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
3400                 if( astream > 0 ) { --astream;  continue; }
3401                 int astrm = -1;
3402                 for( int i=0; astrm<0 && i<ffaudio.size(); ++i )
3403                         if( ffaudio[i]->fidx == aidx ) astrm = i;
3404                 if( astrm >= 0 ) {
3405                         if( ret < 0 ) ret = astrm;
3406                         int64_t mask = (1 << ffaudio[astrm]->channels) - 1;
3407                         channels |= mask << ffaudio[astrm]->channel0;
3408                 }
3409                 if( !astream ) break;
3410         }
3411         channel_mask = channels;
3412         return ret;
3413 }
3414
3415
3416 int FFMPEG::ff_total_video_layers()
3417 {
3418         return vstrm_index.size();
3419 }
3420
3421 int FFMPEG::ff_total_vstreams()
3422 {
3423         return ffvideo.size();
3424 }
3425
3426 int FFMPEG::ff_video_width(int stream)
3427 {
3428         FFVideoStream *vst = ffvideo[stream];
3429         return !vst->transpose ? vst->width : vst->height;
3430 }
3431
3432 int FFMPEG::ff_video_height(int stream)
3433 {
3434         FFVideoStream *vst = ffvideo[stream];
3435         return !vst->transpose ? vst->height : vst->width;
3436 }
3437
3438 int FFMPEG::ff_set_video_width(int stream, int width)
3439 {
3440         FFVideoStream *vst = ffvideo[stream];
3441         int *vw = !vst->transpose ? &vst->width : &vst->height, w = *vw;
3442         *vw = width;
3443         return w;
3444 }
3445
3446 int FFMPEG::ff_set_video_height(int stream, int height)
3447 {
3448         FFVideoStream *vst = ffvideo[stream];
3449         int *vh = !vst->transpose ? &vst->height : &vst->width, h = *vh;
3450         *vh = height;
3451         return h;
3452 }
3453
3454 int FFMPEG::ff_coded_width(int stream)
3455 {
3456         return ffvideo[stream]->avctx->coded_width;
3457 }
3458
3459 int FFMPEG::ff_coded_height(int stream)
3460 {
3461         return ffvideo[stream]->avctx->coded_height;
3462 }
3463
3464 float FFMPEG::ff_aspect_ratio(int stream)
3465 {
3466         return ffvideo[stream]->aspect_ratio;
3467 }
3468
3469 const char* FFMPEG::ff_video_codec(int stream)
3470 {
3471         AVStream *st = ffvideo[stream]->st;
3472         AVCodecID id = st->codecpar->codec_id;
3473         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
3474         return desc ? desc->name : _("Unknown");
3475 }
3476
3477 int FFMPEG::ff_color_range(int stream)
3478 {
3479         return ffvideo[stream]->color_range;
3480 }
3481
3482 int FFMPEG::ff_color_space(int stream)
3483 {
3484         return ffvideo[stream]->color_space;
3485 }
3486
3487 double FFMPEG::ff_frame_rate(int stream)
3488 {
3489         return ffvideo[stream]->frame_rate;
3490 }
3491
3492 int64_t FFMPEG::ff_video_frames(int stream)
3493 {
3494         return ffvideo[stream]->length;
3495 }
3496
3497 int FFMPEG::ff_video_pid(int stream)
3498 {
3499         return ffvideo[stream]->st->id;
3500 }
3501
3502 int FFMPEG::ff_video_mpeg_color_range(int stream)
3503 {
3504         return ffvideo[stream]->st->codecpar->color_range == AVCOL_RANGE_MPEG ? 1 : 0;
3505 }
3506
3507 int FFMPEG::ff_cpus()
3508 {
3509         return !file_base ? 1 : file_base->file->cpus;
3510 }
3511
3512 const char *FFMPEG::ff_hw_dev()
3513 {
3514         return &file_base->file->preferences->use_hw_dev[0];
3515 }
3516
3517 Preferences *FFMPEG::ff_prefs()
3518 {
3519         return !file_base ? 0 : file_base->file->preferences;
3520 }
3521
3522 double FFVideoStream::get_rotation_angle()
3523 {
3524         int size = 0;
3525         int *matrix = (int*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX, &size);
3526         int len = size/sizeof(*matrix);
3527         if( !matrix || len < 5 ) return 0;
3528         const double s = 1/65536.;
3529         double theta = (!matrix[0] && !matrix[3]) || (!matrix[1] && !matrix[4]) ? 0 :
3530                  atan2( s*matrix[1] / hypot(s*matrix[1], s*matrix[4]),
3531                         s*matrix[0] / hypot(s*matrix[0], s*matrix[3])) * 180/M_PI;
3532         return theta;
3533 }
3534
3535 int FFVideoStream::flip(double theta)
3536 {
3537         int ret = 0;
3538         transpose = 0;
3539         Preferences *preferences = ffmpeg->ff_prefs();
3540         if( !preferences || !preferences->auto_rotate ) return ret;
3541         double tolerance = 1;
3542         if( fabs(theta-0) < tolerance ) return  ret;
3543         if( (theta=fmod(theta, 360)) < 0 ) theta += 360;
3544         if( fabs(theta-90) < tolerance ) {
3545                 if( (ret = insert_filter("transpose", "clock")) < 0 )
3546                         return ret;
3547                 transpose = 1;
3548         }
3549         else if( fabs(theta-180) < tolerance ) {
3550                 if( (ret=insert_filter("hflip", 0)) < 0 )
3551                         return ret;
3552                 if( (ret=insert_filter("vflip", 0)) < 0 )
3553                         return ret;
3554         }
3555         else if (fabs(theta-270) < tolerance ) {
3556                 if( (ret=insert_filter("transpose", "cclock")) < 0 )
3557                         return ret;
3558                 transpose = 1;
3559         }
3560         else {
3561                 char angle[BCSTRLEN];
3562                 sprintf(angle, "%f", theta*M_PI/180.);
3563                 if( (ret=insert_filter("rotate", angle)) < 0 )
3564                         return ret;
3565         }
3566         return 1;
3567 }
3568
3569 int FFVideoStream::create_filter(const char *filter_spec)
3570 {
3571         double theta = get_rotation_angle();
3572         if( !theta && !filter_spec )
3573                 return 0;
3574         avfilter_register_all();
3575         if( filter_spec ) {
3576                 const char *sp = filter_spec;
3577                 char filter_name[BCSTRLEN], *np = filter_name;
3578                 int i = sizeof(filter_name);
3579                 while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
3580                 *np = 0;
3581                 const AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
3582                 if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_VIDEO ) {
3583                         ff_err(AVERROR(EINVAL), "FFVideoStream::create_filter: %s\n", filter_spec);
3584                         return -1;
3585                 }
3586         }
3587         AVCodecParameters *avpar = st->codecpar;
3588         int sa_num = avpar->sample_aspect_ratio.num;
3589         if( !sa_num ) sa_num = 1;
3590         int sa_den = avpar->sample_aspect_ratio.den;
3591         if( !sa_den ) sa_num = 1;
3592
3593         int ret = 0;  char args[BCTEXTLEN];
3594         AVPixelFormat pix_fmt = (AVPixelFormat)avpar->format;
3595         snprintf(args, sizeof(args),
3596                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
3597                 avpar->width, avpar->height, (int)pix_fmt,
3598                 st->time_base.num, st->time_base.den, sa_num, sa_den);
3599         if( ret >= 0 ) {
3600                 filt_ctx = 0;
3601                 ret = insert_filter("buffer", args, "in");
3602                 buffersrc_ctx = filt_ctx;
3603         }
3604         if( ret >= 0 )
3605                 ret = flip(theta);
3606         AVFilterContext *fsrc = filt_ctx;
3607         if( ret >= 0 ) {
3608                 filt_ctx = 0;
3609                 ret = insert_filter("buffersink", 0, "out");
3610                 buffersink_ctx = filt_ctx;
3611         }
3612         if( ret >= 0 ) {
3613                 ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
3614                         (uint8_t*)&pix_fmt, sizeof(pix_fmt),
3615                         AV_OPT_SEARCH_CHILDREN);
3616         }
3617         if( ret >= 0 )
3618                 ret = config_filters(filter_spec, fsrc);
3619         else
3620                 ff_err(ret, "FFVideoStream::create_filter");
3621         return ret >= 0 ? 0 : -1;
3622 }
3623
3624 int FFAudioStream::create_filter(const char *filter_spec)
3625 {
3626         if( !filter_spec )
3627                 return 0;
3628         avfilter_register_all();
3629         if( filter_spec ) {
3630                 const char *sp = filter_spec;
3631                 char filter_name[BCSTRLEN], *np = filter_name;
3632                 int i = sizeof(filter_name);
3633                 while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
3634                 *np = 0;
3635                 const AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
3636                 if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_AUDIO ) {
3637                         ff_err(AVERROR(EINVAL), "FFAudioStream::create_filter: %s\n", filter_spec);
3638                         return -1;
3639                 }
3640         }
3641         int ret = 0;  char args[BCTEXTLEN];
3642         AVCodecParameters *avpar = st->codecpar;
3643         AVSampleFormat sample_fmt = (AVSampleFormat)avpar->format;
3644         snprintf(args, sizeof(args),
3645                 "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%jx",
3646                 st->time_base.num, st->time_base.den, avpar->sample_rate,
3647                 av_get_sample_fmt_name(sample_fmt), avpar->channel_layout);
3648         if( ret >= 0 ) {
3649                 filt_ctx = 0;
3650                 ret = insert_filter("abuffer", args, "in");
3651                 buffersrc_ctx = filt_ctx;
3652         }
3653         AVFilterContext *fsrc = filt_ctx;
3654         if( ret >= 0 ) {
3655                 filt_ctx = 0;
3656                 ret = insert_filter("abuffersink", 0, "out");
3657                 buffersink_ctx = filt_ctx;
3658         }
3659         if( ret >= 0 )
3660                 ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
3661                         (uint8_t*)&sample_fmt, sizeof(sample_fmt),
3662                         AV_OPT_SEARCH_CHILDREN);
3663         if( ret >= 0 )
3664                 ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
3665                         (uint8_t*)&avpar->channel_layout,
3666                         sizeof(avpar->channel_layout), AV_OPT_SEARCH_CHILDREN);
3667         if( ret >= 0 )
3668                 ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
3669                         (uint8_t*)&sample_rate, sizeof(sample_rate),
3670                         AV_OPT_SEARCH_CHILDREN);
3671         if( ret >= 0 )
3672                 ret = config_filters(filter_spec, fsrc);
3673         else
3674                 ff_err(ret, "FFAudioStream::create_filter");
3675         return ret >= 0 ? 0 : -1;
3676 }
3677
3678 int FFStream::insert_filter(const char *name, const char *arg, const char *inst_name)
3679 {
3680         const AVFilter *filter = avfilter_get_by_name(name);
3681         if( !filter ) return -1;
3682         char filt_inst[BCSTRLEN];
3683         if( !inst_name ) {
3684                 snprintf(filt_inst, sizeof(filt_inst), "%s_%d", name, ++filt_id);
3685                 inst_name = filt_inst;
3686         }
3687         if( !filter_graph )
3688                 filter_graph = avfilter_graph_alloc();
3689         AVFilterContext *fctx = 0;
3690         int ret = avfilter_graph_create_filter(&fctx,
3691                 filter, inst_name, arg, NULL, filter_graph);
3692         if( ret >= 0 && filt_ctx )
3693                 ret = avfilter_link(filt_ctx, 0, fctx, 0);
3694         if( ret >= 0 )
3695                 filt_ctx = fctx;
3696         else
3697                 avfilter_free(fctx);
3698         return ret;
3699 }
3700
3701 int FFStream::config_filters(const char *filter_spec, AVFilterContext *fsrc)
3702 {
3703         int ret = 0;
3704         AVFilterContext *fsink = buffersink_ctx;
3705         if( filter_spec ) {
3706                 /* Endpoints for the filter graph. */
3707                 AVFilterInOut *outputs = avfilter_inout_alloc();
3708                 AVFilterInOut *inputs = avfilter_inout_alloc();
3709                 if( !inputs || !outputs ) ret = -1;
3710                 if( ret >= 0 ) {
3711                         outputs->filter_ctx = fsrc;
3712                         outputs->pad_idx = 0;
3713                         outputs->next = 0;
3714                         if( !(outputs->name = av_strdup(fsrc->name)) ) ret = -1;
3715                 }
3716                 if( ret >= 0 ) {
3717                         inputs->filter_ctx = fsink;
3718                         inputs->pad_idx = 0;
3719                         inputs->next = 0;
3720                         if( !(inputs->name = av_strdup(fsink->name)) ) ret = -1;
3721                 }
3722                 if( ret >= 0 ) {
3723                         int len = strlen(fsrc->name)+2 + strlen(filter_spec) + 1;
3724                         char spec[len];  sprintf(spec, "[%s]%s", fsrc->name, filter_spec);
3725                         ret = avfilter_graph_parse_ptr(filter_graph, spec,
3726                                 &inputs, &outputs, NULL);
3727                 }
3728                 avfilter_inout_free(&inputs);
3729                 avfilter_inout_free(&outputs);
3730         }
3731         else
3732                 ret = avfilter_link(fsrc, 0, fsink, 0);
3733         if( ret >= 0 )
3734                 ret = avfilter_graph_config(filter_graph, NULL);
3735         if( ret < 0 ) {
3736                 ff_err(ret, "FFStream::create_filter");
3737                 avfilter_graph_free(&filter_graph);
3738                 filter_graph = 0;
3739         }
3740         return ret;
3741 }
3742
3743
3744 AVCodecContext *FFMPEG::activate_decoder(AVStream *st)
3745 {
3746         AVDictionary *copts = 0;
3747         av_dict_copy(&copts, opts, 0);
3748         AVCodecID codec_id = st->codecpar->codec_id;
3749         AVCodec *decoder = 0;
3750         switch( st->codecpar->codec_type ) {
3751         case AVMEDIA_TYPE_VIDEO:
3752                 if( opt_video_decoder )
3753                         decoder = avcodec_find_decoder_by_name(opt_video_decoder);
3754                 else
3755                         video_codec_remaps.update(codec_id, decoder);
3756                 break;
3757         case AVMEDIA_TYPE_AUDIO:
3758                 if( opt_audio_decoder )
3759                         decoder = avcodec_find_decoder_by_name(opt_audio_decoder);
3760                 else
3761                         audio_codec_remaps.update(codec_id, decoder);
3762                 break;
3763         default:
3764                 return 0;
3765         }
3766         if( !decoder && !(decoder = avcodec_find_decoder(codec_id)) ) {
3767                 eprintf(_("cant find decoder codec %d\n"), (int)codec_id);
3768                 return 0;
3769         }
3770         AVCodecContext *avctx = avcodec_alloc_context3(decoder);
3771         if( !avctx ) {
3772                 eprintf(_("cant allocate codec context\n"));
3773                 return 0;
3774         }
3775         avcodec_parameters_to_context(avctx, st->codecpar);
3776         if( !av_dict_get(copts, "threads", NULL, 0) )
3777                 avctx->thread_count = ff_cpus();
3778         int ret = avcodec_open2(avctx, decoder, &copts);
3779         av_dict_free(&copts);
3780         if( ret < 0 ) {
3781                 avcodec_free_context(&avctx);
3782                 avctx = 0;
3783         }
3784         return avctx;
3785 }
3786
3787 int FFMPEG::scan(IndexState *index_state, int64_t *scan_position, int *canceled)
3788 {
3789         AVPacket pkt;
3790         av_init_packet(&pkt);
3791         AVFrame *frame = av_frame_alloc();
3792         if( !frame ) {
3793                 fprintf(stderr,"FFMPEG::scan: ");
3794                 fprintf(stderr,_("av_frame_alloc failed\n"));
3795                 fprintf(stderr,"FFMPEG::scan:file=%s\n", file_base->asset->path);
3796                 return -1;
3797         }
3798
3799         index_state->add_video_markers(ffvideo.size());
3800         index_state->add_audio_markers(ffaudio.size());
3801
3802         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
3803                 AVStream *st = fmt_ctx->streams[i];
3804                 AVCodecContext *avctx = activate_decoder(st);
3805                 if( avctx ) {
3806                         AVCodecParameters *avpar = st->codecpar;
3807                         switch( avpar->codec_type ) {
3808                         case AVMEDIA_TYPE_VIDEO: {
3809                                 int vidx = ffvideo.size();
3810                                 while( --vidx>=0 && ffvideo[vidx]->fidx != i );
3811                                 if( vidx < 0 ) break;
3812                                 ffvideo[vidx]->avctx = avctx;
3813                                 continue; }
3814                         case AVMEDIA_TYPE_AUDIO: {
3815                                 int aidx = ffaudio.size();
3816                                 while( --aidx>=0 && ffaudio[aidx]->fidx != i );
3817                                 if( aidx < 0 ) break;
3818                                 ffaudio[aidx]->avctx = avctx;
3819                                 continue; }
3820                         default: break;
3821                         }
3822                 }
3823                 fprintf(stderr,"FFMPEG::scan: ");
3824                 fprintf(stderr,_("codec open failed\n"));
3825                 fprintf(stderr,"FFMPEG::scan:file=%s\n", file_base->asset->path);
3826                 avcodec_free_context(&avctx);
3827         }
3828
3829         decode_activate();
3830         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
3831                 AVStream *st = fmt_ctx->streams[i];
3832                 AVCodecParameters *avpar = st->codecpar;
3833                 if( avpar->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
3834                 int64_t tstmp = st->start_time;
3835                 if( tstmp == AV_NOPTS_VALUE ) continue;
3836                 int aidx = ffaudio.size();
3837                 while( --aidx>=0 && ffaudio[aidx]->fidx != i );
3838                 if( aidx < 0 ) continue;
3839                 FFAudioStream *aud = ffaudio[aidx];
3840                 tstmp -= aud->nudge;
3841                 double secs = to_secs(tstmp, st->time_base);
3842                 aud->curr_pos = secs * aud->sample_rate + 0.5;
3843         }
3844
3845         int errs = 0;
3846         for( int64_t count=0; !*canceled; ++count ) {
3847                 av_packet_unref(&pkt);
3848                 pkt.data = 0; pkt.size = 0;
3849
3850                 int ret = av_read_frame(fmt_ctx, &pkt);
3851                 if( ret < 0 ) {
3852                         if( ret == AVERROR_EOF ) break;
3853                         if( ++errs > 100 ) {
3854                                 ff_err(ret,_("over 100 read_frame errs\n"));
3855                                 break;
3856                         }
3857                         continue;
3858                 }
3859                 if( !pkt.data ) continue;
3860                 int i = pkt.stream_index;
3861                 if( i < 0 || i >= (int)fmt_ctx->nb_streams ) continue;
3862                 AVStream *st = fmt_ctx->streams[i];
3863                 if( pkt.pos > *scan_position ) *scan_position = pkt.pos;
3864
3865                 AVCodecParameters *avpar = st->codecpar;
3866                 switch( avpar->codec_type ) {
3867                 case AVMEDIA_TYPE_VIDEO: {
3868                         int vidx = ffvideo.size();
3869                         while( --vidx>=0 && ffvideo[vidx]->fidx != i );
3870                         if( vidx < 0 ) break;
3871                         FFVideoStream *vid = ffvideo[vidx];
3872                         if( !vid->avctx ) break;
3873                         int64_t tstmp = pkt.pts;
3874                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.dts;
3875                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
3876                                 if( vid->nudge != AV_NOPTS_VALUE ) tstmp -= vid->nudge;
3877                                 double secs = to_secs(tstmp, st->time_base);
3878                                 int64_t frm = secs * vid->frame_rate + 0.5;
3879                                 if( frm < 0 ) frm = 0;
3880                                 index_state->put_video_mark(vidx, frm, pkt.pos);
3881                         }
3882 #if 0
3883                         ret = avcodec_send_packet(vid->avctx, pkt);
3884                         if( ret < 0 ) break;
3885                         while( (ret=vid->decode_frame(frame)) > 0 ) {}
3886 #endif
3887                         break; }
3888                 case AVMEDIA_TYPE_AUDIO: {
3889                         int aidx = ffaudio.size();
3890                         while( --aidx>=0 && ffaudio[aidx]->fidx != i );
3891                         if( aidx < 0 ) break;
3892                         FFAudioStream *aud = ffaudio[aidx];
3893                         if( !aud->avctx ) break;
3894                         int64_t tstmp = pkt.pts;
3895                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.dts;
3896                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
3897                                 if( aud->nudge != AV_NOPTS_VALUE ) tstmp -= aud->nudge;
3898                                 double secs = to_secs(tstmp, st->time_base);
3899                                 int64_t sample = secs * aud->sample_rate + 0.5;
3900                                 if( sample >= 0 )
3901                                         index_state->put_audio_mark(aidx, sample, pkt.pos);
3902                         }
3903                         ret = avcodec_send_packet(aud->avctx, &pkt);
3904                         if( ret < 0 ) break;
3905                         int ch = aud->channel0,  nch = aud->channels;
3906                         int64_t pos = index_state->pos(ch);
3907                         if( pos != aud->curr_pos ) {
3908 if( abs(pos-aud->curr_pos) > 1 )
3909 printf("audio%d pad %jd %jd (%jd)\n", aud->idx, pos, aud->curr_pos, pos-aud->curr_pos);
3910                                 index_state->pad_data(ch, nch, aud->curr_pos);
3911                         }
3912                         while( (ret=aud->decode_frame(frame)) > 0 ) {
3913                                 //if( frame->channels != nch ) break;
3914                                 aud->init_swr(frame->channels, frame->format, frame->sample_rate);
3915                                 float *samples;
3916                                 int len = aud->get_samples(samples,
3917                                          &frame->extended_data[0], frame->nb_samples);
3918                                 pos = aud->curr_pos;
3919                                 if( (aud->curr_pos += len) >= 0 ) {
3920                                         if( pos < 0 ) {
3921                                                 samples += -pos * nch;
3922                                                 len = aud->curr_pos;
3923                                         }
3924                                         for( int i=0; i<nch; ++i )
3925                                                 index_state->put_data(ch+i,nch,samples+i,len);
3926                                 }
3927                         }
3928                         break; }
3929                 default: break;
3930                 }
3931         }
3932         av_frame_free(&frame);
3933         return 0;
3934 }
3935
3936 void FFStream::load_markers(IndexMarks &marks, double rate)
3937 {
3938         int in = 0;
3939         int64_t sz = marks.size();
3940         int max_entries = fmt_ctx->max_index_size / sizeof(AVIndexEntry) - 1;
3941         int nb_ent = st->nb_index_entries;
3942 // some formats already have an index
3943         if( nb_ent > 0 ) {
3944                 AVIndexEntry *ep = &st->index_entries[nb_ent-1];
3945                 int64_t tstmp = ep->timestamp;
3946                 if( nudge != AV_NOPTS_VALUE ) tstmp -= nudge;
3947                 double secs = ffmpeg->to_secs(tstmp, st->time_base);
3948                 int64_t no = secs * rate;
3949                 while( in < sz && marks[in].no <= no ) ++in;
3950         }
3951         int64_t len = sz - in;
3952         int64_t count = max_entries - nb_ent;
3953         if( count > len ) count = len;
3954         for( int i=0; i<count; ++i ) {
3955                 int k = in + i * len / count;
3956                 int64_t no = marks[k].no, pos = marks[k].pos;
3957                 double secs = (double)no / rate;
3958                 int64_t tstmp = secs * st->time_base.den / st->time_base.num;
3959                 if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
3960                 av_add_index_entry(st, pos, tstmp, 0, 0, AVINDEX_KEYFRAME);
3961         }
3962 }
3963
3964
3965 /*
3966  * 1) if the format context has a timecode
3967  *   return fmt_ctx->timecode - 0
3968  * 2) if the layer/channel has a timecode
3969  *   return st->timecode - (start_time-nudge)
3970  * 3) find the 1st program with stream, find 1st program video stream,
3971  *   if video stream has a timecode, return st->timecode - (start_time-nudge)
3972  * 4) find timecode in any stream, return st->timecode
3973  * 5) read 100 packets, save ofs=pkt.pts*st->time_base - st->nudge:
3974  *   decode frame for video stream of 1st program
3975  *   if frame->timecode has a timecode, return frame->timecode - ofs
3976  *   if side_data has gop timecode, return gop->timecode - ofs
3977  *   if side_data has smpte timecode, return smpte->timecode - ofs
3978  * 6) if the filename/url scans *date_time.ext, return date_time
3979  * 7) if stat works on the filename/url, return mtime
3980  * 8) return -1 failure
3981 */
3982 double FFMPEG::get_initial_timecode(int data_type, int channel, double frame_rate)
3983 {
3984         AVRational rate = check_frame_rate(0, frame_rate);
3985         if( !rate.num ) return -1;
3986 // format context timecode
3987         AVDictionaryEntry *tc = av_dict_get(fmt_ctx->metadata, "timecode", 0, 0);
3988         if( tc ) return ff_get_timecode(tc->value, rate, 0);
3989 // stream timecode
3990         if( open_decoder() ) return -1;
3991         AVStream *st = 0;
3992         int64_t nudge = 0;
3993         int codec_type = -1, fidx = -1;
3994         switch( data_type ) {
3995         case TRACK_AUDIO: {
3996                 codec_type = AVMEDIA_TYPE_AUDIO;
3997                 int aidx = astrm_index[channel].st_idx;
3998                 FFAudioStream *aud = ffaudio[aidx];
3999                 fidx = aud->fidx;
4000                 nudge = aud->nudge;
4001                 st = aud->st;
4002                 AVDictionaryEntry *tref = av_dict_get(fmt_ctx->metadata, "time_reference", 0, 0);
4003                 if( tref && aud && aud->sample_rate )
4004                         return strtod(tref->value, 0) / aud->sample_rate;
4005                 break; }
4006         case TRACK_VIDEO: {
4007                 codec_type = AVMEDIA_TYPE_VIDEO;
4008                 int vidx = vstrm_index[channel].st_idx;
4009                 FFVideoStream *vid = ffvideo[vidx];
4010                 fidx = vid->fidx;
4011                 nudge = vid->nudge;
4012                 st = vid->st;
4013                 break; }
4014         }
4015         if( codec_type < 0 ) return -1;
4016         if( st )
4017                 tc = av_dict_get(st->metadata, "timecode", 0, 0);
4018         if( !tc ) {
4019                 st = 0;
4020 // find first program which references this stream
4021                 int pidx = -1;
4022                 for( int i=0, m=fmt_ctx->nb_programs; pidx<0 && i<m; ++i ) {
4023                         AVProgram *pgrm = fmt_ctx->programs[i];
4024                         for( int j=0, n=pgrm->nb_stream_indexes; j<n; ++j ) {
4025                                 int st_idx = pgrm->stream_index[j];
4026                                 if( st_idx == fidx ) { pidx = i;  break; }
4027                         }
4028                 }
4029                 fidx = -1;
4030                 if( pidx >= 0 ) {
4031                         AVProgram *pgrm = fmt_ctx->programs[pidx];
4032                         for( int j=0, n=pgrm->nb_stream_indexes; j<n; ++j ) {
4033                                 int st_idx = pgrm->stream_index[j];
4034                                 AVStream *tst = fmt_ctx->streams[st_idx];
4035                                 if( !tst ) continue;
4036                                 if( tst->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
4037                                         st = tst;  fidx = st_idx;
4038                                         break;
4039                                 }
4040                         }
4041                 }
4042                 else {
4043                         for( int i=0, n=fmt_ctx->nb_streams; i<n; ++i ) {
4044                                 AVStream *tst = fmt_ctx->streams[i];
4045                                 if( !tst ) continue;
4046                                 if( tst->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
4047                                         st = tst;  fidx = i;
4048                                         break;
4049                                 }
4050                         }
4051                 }
4052                 if( st )
4053                         tc = av_dict_get(st->metadata, "timecode", 0, 0);
4054         }
4055
4056         if( !tc ) {
4057                 // any timecode, includes -data- streams
4058                 for( int i=0, n=fmt_ctx->nb_streams; i<n; ++i ) {
4059                         AVStream *tst = fmt_ctx->streams[i];
4060                         if( !tst ) continue;
4061                         if( (tc = av_dict_get(tst->metadata, "timecode", 0, 0)) ) {
4062                                 st = tst;  fidx = i;
4063                                 break;
4064                         }
4065                 }
4066         }
4067
4068         if( st && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
4069                 if( st->r_frame_rate.num && st->r_frame_rate.den )
4070                         rate = st->r_frame_rate;
4071                 nudge = st->start_time;
4072                 for( int i=0; i<ffvideo.size(); ++i ) {
4073                         if( ffvideo[i]->st == st ) {
4074                                 nudge = ffvideo[i]->nudge;
4075                                 break;
4076                         }
4077                 }
4078         }
4079
4080         if( tc ) { // return timecode
4081                 double secs = st->start_time == AV_NOPTS_VALUE ? 0 :
4082                         to_secs(st->start_time - nudge, st->time_base);
4083                 return ff_get_timecode(tc->value, rate, secs);
4084         }
4085
4086         if( !st || fidx < 0 ) return -1;
4087
4088         decode_activate();
4089         AVCodecContext *av_ctx = activate_decoder(st);
4090         if( !av_ctx ) {
4091                 fprintf(stderr,"activate_decoder failed\n");
4092                 return -1;
4093         }
4094         avCodecContext avctx(av_ctx); // auto deletes
4095         if( avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
4096             avctx->framerate.num && avctx->framerate.den )
4097                 rate = avctx->framerate;
4098
4099         avPacket pkt;   // auto deletes
4100         avFrame frame;  // auto deletes
4101         if( !frame ) {
4102                 fprintf(stderr,"av_frame_alloc failed\n");
4103                 return -1;
4104         }
4105         int errs = 0;
4106         int64_t max_packets = 100;
4107         char tcbuf[AV_TIMECODE_STR_SIZE];
4108
4109         for( int64_t count=0; count<max_packets; ++count ) {
4110                 av_packet_unref(pkt);
4111                 pkt->data = 0; pkt->size = 0;
4112
4113                 int ret = av_read_frame(fmt_ctx, pkt);
4114                 if( ret < 0 ) {
4115                         if( ret == AVERROR_EOF ) break;
4116                         if( ++errs > 100 ) {
4117                                 fprintf(stderr,"over 100 read_frame errs\n");
4118                                 break;
4119                         }
4120                         continue;
4121                 }
4122                 if( !pkt->data ) continue;
4123                 int i = pkt->stream_index;
4124                 if( i != fidx ) continue;
4125                 int64_t tstmp = pkt->pts;
4126                 if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt->dts;
4127                 double secs = to_secs(tstmp - nudge, st->time_base);
4128                 ret = avcodec_send_packet(avctx, pkt);
4129                 if( ret < 0 ) return -1;
4130
4131                 while( (ret = avcodec_receive_frame(avctx, frame)) >= 0 ) {
4132                         if( (tc = av_dict_get(frame->metadata, "timecode", 0, 0)) )
4133                                 return ff_get_timecode(tc->value, rate, secs);
4134                         int k = frame->nb_side_data;
4135                         AVFrameSideData *side_data = 0;
4136                         while( --k >= 0 ) {
4137                                 side_data = frame->side_data[k];
4138                                 switch( side_data->type ) {
4139                                 case AV_FRAME_DATA_GOP_TIMECODE: {
4140                                         int64_t data = *(int64_t *)side_data->data;
4141                                         int sz = sizeof(data);
4142                                         if( side_data->size >= sz ) {
4143                                                 av_timecode_make_mpeg_tc_string(tcbuf, data);
4144                                                 return ff_get_timecode(tcbuf, rate, secs);
4145                                         }
4146                                         break; }
4147                                 case AV_FRAME_DATA_S12M_TIMECODE: {
4148                                         uint32_t *data = (uint32_t *)side_data->data;
4149                                         int n = data[0], sz = (n+1)*sizeof(*data);
4150                                         if( side_data->size >= sz ) {
4151                                                 av_timecode_make_smpte_tc_string(tcbuf, data[n], 0);
4152                                                 return ff_get_timecode(tcbuf, rate, secs);
4153                                         }
4154                                         break; }
4155                                 default:
4156                                         break;
4157                                 }
4158                         }
4159                 }
4160         }
4161         char *path = fmt_ctx->url;
4162         char *bp = strrchr(path, '/');
4163         if( !bp ) bp = path; else ++bp;
4164         char *cp = strrchr(bp, '.');
4165         if( cp && (cp-=(8+1+6)) >= bp ) {
4166                 char sep[BCSTRLEN];
4167                 int year,mon,day, hour,min,sec, frm=0;
4168                 if( sscanf(cp,"%4d%2d%2d%[_-]%2d%2d%2d",
4169                                 &year,&mon,&day, sep, &hour,&min,&sec) == 7 ) {
4170                         int ch = sep[0];
4171                         // year>=1970,mon=1..12,day=1..31, hour=0..23,min=0..59,sec=0..60
4172                         if( (ch=='_' || ch=='-' ) &&
4173                             year >= 1970 && mon>=1 && mon<=12 && day>=1 && day<=31 &&
4174                             hour>=0 && hour<24 && min>=0 && min<60 && sec>=0 && sec<=60 ) {
4175                                 sprintf(tcbuf,"%d:%02d:%02d:%02d", hour,min,sec, frm);
4176                                 return ff_get_timecode(tcbuf, rate, 0);
4177                         }
4178                 }
4179         }
4180         struct stat tst;
4181         if( stat(path, &tst) >= 0 ) {
4182                 time_t t = (time_t)tst.st_mtim.tv_sec;
4183                 struct tm tm;
4184                 localtime_r(&t, &tm);
4185                 int64_t us = tst.st_mtim.tv_nsec / 1000;
4186                 int frm = us/1000000. * frame_rate;
4187                 sprintf(tcbuf,"%d:%02d:%02d:%02d", tm.tm_hour, tm.tm_min, tm.tm_sec, frm);
4188                 return ff_get_timecode(tcbuf, rate, 0);
4189         }
4190         return -1;
4191 }
4192
4193 double FFMPEG::ff_get_timecode(char *str, AVRational rate, double pos)
4194 {
4195         AVTimecode tc;
4196         if( av_timecode_init_from_string(&tc, rate, str, fmt_ctx) )
4197                 return -1;
4198         double secs = (double)tc.start / tc.fps - pos;
4199         if( secs < 0 ) secs = 0;
4200         return secs;
4201 }
4202
4203 double FFMPEG::get_timecode(const char *path, int data_type, int channel, double rate)
4204 {
4205         FFMPEG ffmpeg(0);
4206         if( ffmpeg.init_decoder(path) ) return -1;
4207         return ffmpeg.get_initial_timecode(data_type, channel, rate);
4208 }
4209