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         buffersrc_ctx = 0;
 267         buffersink_ctx = 0;
 268         frm_count = 0;
 269         nudge = AV_NOPTS_VALUE;
 270         seek_pos = curr_pos = 0;
 271         seeked = 1;  eof = 0;
 272         reading = writing = 0;
 273         hw_pixfmt = AV_PIX_FMT_NONE;
 274         hw_device_ctx = 0;
 275         flushed = 0;
 276         need_packet = 1;
 277         frame = fframe = 0;
 278         bsfc = 0;
 279         stats_fp = 0;
 280         stats_filename = 0;
 281         stats_in = 0;
 282         pass = 0;
 283 }
 284
 285 FFStream::~FFStream()
 286 {
 287         if( reading > 0 || writing > 0 ) avcodec_close(avctx);
 288         if( avctx ) avcodec_free_context(&avctx);
 289         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
 290         if( hw_device_ctx ) av_buffer_unref(&hw_device_ctx);
 291         if( bsfc ) av_bsf_free(&bsfc);
 292         while( frms.first ) frms.remove(frms.first);
 293         if( filter_graph ) avfilter_graph_free(&filter_graph);
 294         if( frame ) av_frame_free(&frame);
 295         if( fframe ) av_frame_free(&fframe);
 296         delete frm_lock;
 297         if( stats_fp ) fclose(stats_fp);
 298         if( stats_in ) av_freep(&stats_in);
 299         delete [] stats_filename;
 300 }
 301
 302 void FFStream::ff_lock(const char *cp)
 303 {
 304         FFMPEG::fflock.lock(cp);
 305 }
 306
 307 void FFStream::ff_unlock()
 308 {
 309         FFMPEG::fflock.unlock();
 310 }
 311
 312 void FFStream::queue(FFrame *frm)
 313 {
 314         frm_lock->lock("FFStream::queue");
 315         frms.append(frm);
 316         ++frm_count;
 317         frm_lock->unlock();
 318         ffmpeg->mux_lock->unlock();
 319 }
 320
 321 void FFStream::dequeue(FFrame *frm)
 322 {
 323         frm_lock->lock("FFStream::dequeue");
 324         --frm_count;
 325         frms.remove_pointer(frm);
 326         frm_lock->unlock();
 327 }
 328
 329 int FFStream::encode_activate()
 330 {
 331         if( writing < 0 )
 332                 writing = ffmpeg->encode_activate();
 333         return writing;
 334 }
 335
 336 static AVPixelFormat hw_pix_fmt = AV_PIX_FMT_NONE; // protected by ff_lock
 337 static enum AVPixelFormat get_hw_format(AVCodecContext *ctx,
 338                         const enum AVPixelFormat *pix_fmts)
 339 {
 340         for( const enum AVPixelFormat *p=pix_fmts; *p!=AV_PIX_FMT_NONE; ++p )
 341                 if( *p == hw_pix_fmt ) return *p;
 342         fprintf(stderr, "Failed to get HW surface format.\n");
 343         return hw_pix_fmt = AV_PIX_FMT_NONE;
 344 }
 345
 346
 347 AVHWDeviceType FFStream::decode_hw_activate()
 348 {
 349         return AV_HWDEVICE_TYPE_NONE;
 350 }
 351
 352 int FFStream::decode_hw_format(AVCodec *decoder, AVHWDeviceType type)
 353 {
 354         return 0;
 355 }
 356
 357 int FFStream::decode_activate()
 358 {
 359         if( reading < 0 && (reading=ffmpeg->decode_activate()) > 0 ) {
 360                 ff_lock("FFStream::decode_activate");
 361                 reading = 0;
 362                 AVDictionary *copts = 0;
 363                 av_dict_copy(&copts, ffmpeg->opts, 0);
 364                 int ret = 0;
 365                 AVHWDeviceType hw_type = decode_hw_activate();
 366
 367                 // this should be avformat_copy_context(), but no copy avail
 368                 ret = avformat_open_input(&fmt_ctx,
 369                         ffmpeg->fmt_ctx->url, ffmpeg->fmt_ctx->iformat, &copts);
 370                 if( ret >= 0 ) {
 371                         ret = avformat_find_stream_info(fmt_ctx, 0);
 372                         st = fmt_ctx->streams[fidx];
 373                         load_markers();
 374                 }
 375                 while( ret >= 0 && st != 0 && !reading ) {
 376                         AVCodecID codec_id = st->codecpar->codec_id;
 377                         AVCodec *decoder = avcodec_find_decoder(codec_id);
 378                         avctx = avcodec_alloc_context3(decoder);
 379                         if( !avctx ) {
 380                                 eprintf(_("cant allocate codec context\n"));
 381                                 ret = AVERROR(ENOMEM);
 382                         }
 383                         if( ret >= 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 384                                 ret = decode_hw_format(decoder, hw_type);
 385                                 if( !ret ) hw_type = AV_HWDEVICE_TYPE_NONE;
 386                         }
 387                         if( ret >= 0 ) {
 388                                 avcodec_parameters_to_context(avctx, st->codecpar);
 389                                 if( !av_dict_get(copts, "threads", NULL, 0) )
 390                                         avctx->thread_count = ffmpeg->ff_cpus();
 391                                 ret = avcodec_open2(avctx, decoder, &copts);
 392                         }
 393                         if( ret >= 0 && hw_type != AV_HWDEVICE_TYPE_NONE ) {
 394                                 if( need_packet ) {
 395                                         need_packet = 0;
 396                                         ret = read_packet();
 397                                 }
 398                                 if( ret >= 0 ) {
 399                                         AVPacket *pkt = (AVPacket*)ipkt;
 400                                         ret = avcodec_send_packet(avctx, pkt);
 401                                         if( ret < 0 || hw_pix_fmt == AV_PIX_FMT_NONE ) {
 402                                                 ff_err(ret, "HW device init failed, using SW decode.\nfile:%s\n",
 403                                                         ffmpeg->fmt_ctx->url);
 404                                                 avcodec_close(avctx);
 405                                                 avcodec_free_context(&avctx);
 406                                                 av_buffer_unref(&hw_device_ctx);
 407                                                 hw_device_ctx = 0;
 408                                                 hw_type = AV_HWDEVICE_TYPE_NONE;
 409                                                 int flags = AVSEEK_FLAG_BACKWARD | AVSEEK_FLAG_ANY;
 410                                                 int idx = st->index;
 411                                                 av_seek_frame(fmt_ctx, idx, INT64_MIN, flags);
 412                                                 need_packet = 1;  flushed = 0;
 413                                                 seeked = 1;  st_eof(0);
 414                                                 ret = 0;
 415                                                 continue;
 416                                         }
 417                                 }
 418                         }
 419                         if( ret >= 0 ) {
 420                                 reading = 1;
 421                         }
 422                         else
 423                                 eprintf(_("open decoder failed\n"));
 424                 }
 425                 if( ret < 0 )
 426                         eprintf(_("can't open input file: %s\n"), ffmpeg->fmt_ctx->url);
 427                 av_dict_free(&copts);
 428                 ff_unlock();
 429         }
 430         return reading;
 431 }
 432
 433 int FFStream::read_packet()
 434 {
 435         av_packet_unref(ipkt);
 436         int ret = av_read_frame(fmt_ctx, ipkt);
 437         if( ret < 0 ) {
 438                 st_eof(1);
 439                 if( ret == AVERROR_EOF ) return 0;
 440                 ff_err(ret, "FFStream::read_packet: av_read_frame failed\n");
 441                 flushed = 1;
 442                 return -1;
 443         }
 444         return 1;
 445 }
 446
 447 int FFStream::decode(AVFrame *frame)
 448 {
 449         int ret = 0;
 450         int retries = MAX_RETRY;
 451
 452         while( ret >= 0 && !flushed && --retries >= 0 ) {
 453                 if( need_packet ) {
 454                         if( (ret=read_packet()) < 0 ) break;
 455                         AVPacket *pkt = ret > 0 ? (AVPacket*)ipkt : 0;
 456                         if( pkt ) {
 457                                 if( pkt->stream_index != st->index ) continue;
 458                                 if( !pkt->data | !pkt->size ) continue;
 459                         }
 460                         if( (ret=avcodec_send_packet(avctx, pkt)) < 0 ) {
 461                                 ff_err(ret, "FFStream::decode: avcodec_send_packet failed.\nfile:%s\n",
 462                                                 ffmpeg->fmt_ctx->url);
 463                                 break;
 464                         }
 465                         need_packet = 0;
 466                         retries = MAX_RETRY;
 467                 }
 468                 if( (ret=decode_frame(frame)) > 0 ) break;
 469                 if( !ret ) {
 470                         need_packet = 1;
 471                         flushed = st_eof();
 472                 }
 473         }
 474
 475         if( retries < 0 ) {
 476                 fprintf(stderr, "FFStream::decode: Retry limit\n");
 477                 ret = 0;
 478         }
 479         if( ret < 0 )
 480                 fprintf(stderr, "FFStream::decode: failed\n");
 481         return ret;
 482 }
 483
 484 int FFStream::load_filter(AVFrame *frame)
 485 {
 486         int ret = av_buffersrc_add_frame_flags(buffersrc_ctx, frame, 0);
 487         if( ret < 0 )
 488                 eprintf(_("av_buffersrc_add_frame_flags failed\n"));
 489         return ret;
 490 }
 491
 492 int FFStream::read_filter(AVFrame *frame)
 493 {
 494         int ret = av_buffersink_get_frame(buffersink_ctx, frame);
 495         if( ret < 0 ) {
 496                 if( ret == AVERROR(EAGAIN) ) return 0;
 497                 if( ret == AVERROR_EOF ) { st_eof(1); return -1; }
 498                 ff_err(ret, "FFStream::read_filter: av_buffersink_get_frame failed\n");
 499                 return ret;
 500         }
 501         return 1;
 502 }
 503
 504 int FFStream::read_frame(AVFrame *frame)
 505 {
 506         av_frame_unref(frame);
 507         if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
 508                 return decode(frame);
 509         if( !fframe && !(fframe=av_frame_alloc()) ) {
 510                 fprintf(stderr, "FFStream::read_frame: av_frame_alloc failed\n");
 511                 return -1;
 512         }
 513         int ret = -1;
 514         while( !flushed && !(ret=read_filter(frame)) ) {
 515                 if( (ret=decode(fframe)) < 0 ) break;
 516                 if( ret > 0 && (ret=load_filter(fframe)) < 0 ) break;
 517         }
 518         return ret;
 519 }
 520
 521 int FFStream::write_packet(FFPacket &pkt)
 522 {
 523         int ret = 0;
 524         if( !bsfc ) {
 525                 av_packet_rescale_ts(pkt, avctx->time_base, st->time_base);
 526                 pkt->stream_index = st->index;
 527                 ret = av_interleaved_write_frame(ffmpeg->fmt_ctx, pkt);
 528         }
 529         else {
 530                 ret = av_bsf_send_packet(bsfc, pkt);
 531                 while( ret >= 0 ) {
 532                         FFPacket bs;
 533                         if( (ret=av_bsf_receive_packet(bsfc, bs)) < 0 ) {
 534                                 if( ret == AVERROR(EAGAIN) ) return 0;
 535                                 if( ret == AVERROR_EOF ) return -1;
 536                                 break;
 537                         }
 538                         av_packet_rescale_ts(bs, avctx->time_base, st->time_base);
 539                         bs->stream_index = st->index;
 540                         ret = av_interleaved_write_frame(ffmpeg->fmt_ctx, bs);
 541                 }
 542         }
 543         if( ret < 0 )
 544                 ff_err(ret, "FFStream::write_packet: write packet failed.\nfile:%s\n",
 545                                 ffmpeg->fmt_ctx->url);
 546         return ret;
 547 }
 548
 549 int FFStream::encode_frame(AVFrame *frame)
 550 {
 551         int pkts = 0, ret = 0;
 552         for( int retry=MAX_RETRY; --retry>=0; ) {
 553                 if( frame || !pkts )
 554                         ret = avcodec_send_frame(avctx, frame);
 555                 if( !ret && frame ) return pkts;
 556                 if( ret < 0 && ret != AVERROR(EAGAIN) ) break;
 557                 FFPacket opkt;
 558                 ret = avcodec_receive_packet(avctx, opkt);
 559                 if( !frame && ret == AVERROR_EOF ) return pkts;
 560                 if( ret < 0 ) break;
 561                 ret = write_packet(opkt);
 562                 if( ret < 0 ) break;
 563                 ++pkts;
 564                 if( frame && stats_fp ) {
 565                         ret = write_stats_file();
 566                         if( ret < 0 ) break;
 567                 }
 568         }
 569         ff_err(ret, "FFStream::encode_frame: encode failed.\nfile: %s\n",
 570                                 ffmpeg->fmt_ctx->url);
 571         return -1;
 572 }
 573
 574 int FFStream::flush()
 575 {
 576         if( writing < 0 )
 577                 return -1;
 578         int ret = encode_frame(0);
 579         if( ret >= 0 && stats_fp ) {
 580                 ret = write_stats_file();
 581                 close_stats_file();
 582         }
 583         if( ret < 0 )
 584                 ff_err(ret, "FFStream::flush failed\n:file:%s\n",
 585                                 ffmpeg->fmt_ctx->url);
 586         return ret >= 0 ? 0 : 1;
 587 }
 588
 589
 590 int FFStream::open_stats_file()
 591 {
 592         stats_fp = fopen(stats_filename,"w");
 593         return stats_fp ? 0 : AVERROR(errno);
 594 }
 595
 596 int FFStream::close_stats_file()
 597 {
 598         if( stats_fp ) {
 599                 fclose(stats_fp);  stats_fp = 0;
 600         }
 601         return 0;
 602 }
 603
 604 int FFStream::read_stats_file()
 605 {
 606         int64_t len = 0;  struct stat stats_st;
 607         int fd = open(stats_filename, O_RDONLY);
 608         int ret = fd >= 0 ? 0: ENOENT;
 609         if( !ret && fstat(fd, &stats_st) )
 610                 ret = EINVAL;
 611         if( !ret ) {
 612                 len = stats_st.st_size;
 613                 stats_in = (char *)av_malloc(len+1);
 614                 if( !stats_in )
 615                         ret = ENOMEM;
 616         }
 617         if( !ret && read(fd, stats_in, len+1) != len )
 618                 ret = EIO;
 619         if( !ret ) {
 620                 stats_in[len] = 0;
 621                 avctx->stats_in = stats_in;
 622         }
 623         if( fd >= 0 )
 624                 close(fd);
 625         return !ret ? 0 : AVERROR(ret);
 626 }
 627
 628 int FFStream::write_stats_file()
 629 {
 630         int ret = 0;
 631         if( avctx->stats_out && (ret=strlen(avctx->stats_out)) > 0 ) {
 632                 int len = fwrite(avctx->stats_out, 1, ret, stats_fp);
 633                 if( ret != len )
 634                         ff_err(ret = AVERROR(errno), "FFStream::write_stats_file.\n%file:%s\n",
 635                                 ffmpeg->fmt_ctx->url);
 636         }
 637         return ret;
 638 }
 639
 640 int FFStream::init_stats_file()
 641 {
 642         int ret = 0;
 643         if( (pass & 2) && (ret = read_stats_file()) < 0 )
 644                 ff_err(ret, "stat file read: %s", stats_filename);
 645         if( (pass & 1) && (ret=open_stats_file()) < 0 )
 646                 ff_err(ret, "stat file open: %s", stats_filename);
 647         return ret >= 0 ? 0 : ret;
 648 }
 649
 650 int FFStream::seek(int64_t no, double rate)
 651 {
 652 // default ffmpeg native seek
 653         int npkts = 1;
 654         int64_t pos = no, pkt_pos = -1;
 655         IndexMarks *index_markers = get_markers();
 656         if( index_markers && index_markers->size() > 1 ) {
 657                 IndexMarks &marks = *index_markers;
 658                 int i = marks.find(pos);
 659                 int64_t n = i < 0 ? (i=0) : marks[i].no;
 660 // if indexed seek point not too far away (<30 secs), use index
 661                 if( no-n < 30*rate ) {
 662                         if( n < 0 ) n = 0;
 663                         pos = n;
 664                         if( i < marks.size() ) pkt_pos = marks[i].pos;
 665                         npkts = MAX_RETRY;
 666                 }
 667         }
 668         if( pos == curr_pos ) return 0;
 669         double secs = pos < 0 ? 0. : pos / rate;
 670         AVRational time_base = st->time_base;
 671         int64_t tstmp = time_base.num > 0 ? secs * time_base.den/time_base.num : 0;
 672         if( !tstmp ) {
 673                 if( st->nb_index_entries > 0 ) tstmp = st->index_entries[0].timestamp;
 674                 else if( st->start_time != AV_NOPTS_VALUE ) tstmp = st->start_time;
 675                 else if( st->first_dts != AV_NOPTS_VALUE ) tstmp = st->first_dts;
 676                 else tstmp = INT64_MIN+1;
 677         }
 678         else if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 679         int idx = st->index;
 680 #if 0
 681 // seek all streams using the default timebase.
 682 //   this is how ffmpeg and ffplay work.  stream seeks are less tested.
 683         tstmp = av_rescale_q(tstmp, time_base, AV_TIME_BASE_Q);
 684         idx = -1;
 685 #endif
 686
 687         avcodec_flush_buffers(avctx);
 688         avformat_flush(fmt_ctx);
 689 #if 0
 690         int64_t seek = tstmp;
 691         int flags = AVSEEK_FLAG_ANY;
 692         if( !(fmt_ctx->iformat->flags & AVFMT_NO_BYTE_SEEK) && pkt_pos >= 0 ) {
 693                 seek = pkt_pos;
 694                 flags = AVSEEK_FLAG_BYTE;
 695         }
 696         int ret = avformat_seek_file(fmt_ctx, st->index, -INT64_MAX, seek, INT64_MAX, flags);
 697 #else
 698 // finds the first index frame below the target time
 699         int flags = AVSEEK_FLAG_BACKWARD | AVSEEK_FLAG_ANY;
 700         int ret = av_seek_frame(fmt_ctx, idx, tstmp, flags);
 701 #endif
 702         int retry = MAX_RETRY;
 703         while( ret >= 0 ) {
 704                 need_packet = 0;  flushed = 0;
 705                 seeked = 1;  st_eof(0);
 706 // read up to retry packets, limited to npkts in stream, and not pkt.pos past pkt_pos
 707                 while( --retry >= 0 ) {
 708                         if( read_packet() <= 0 ) { ret = -1;  break; }
 709                         if( ipkt->stream_index != st->index ) continue;
 710                         if( !ipkt->data || !ipkt->size ) continue;
 711                         if( pkt_pos >= 0 && ipkt->pos >= pkt_pos ) break;
 712                         if( --npkts <= 0 ) break;
 713                         int64_t pkt_ts = ipkt->dts != AV_NOPTS_VALUE ? ipkt->dts : ipkt->pts;
 714                         if( pkt_ts == AV_NOPTS_VALUE ) continue;
 715                         if( pkt_ts >= tstmp ) break;
 716                 }
 717                 if( retry < 0 ) {
 718                         fprintf(stderr,"FFStream::seek: retry limit, pos=%jd tstmp=%jd\n",pos,tstmp);
 719                         ret = -1;
 720                 }
 721                 if( ret < 0 ) break;
 722                 ret = avcodec_send_packet(avctx, ipkt);
 723                 if( !ret ) break;
 724 //some codecs need more than one pkt to resync
 725                 if( ret == AVERROR_INVALIDDATA ) ret = 0;
 726                 if( ret < 0 ) {
 727                         ff_err(ret, "FFStream::avcodec_send_packet failed.\nseek:%s\n",
 728                                 ffmpeg->fmt_ctx->url);
 729                         break;
 730                 }
 731         }
 732         if( ret < 0 ) {
 733 printf("** seek fail %jd, %jd\n", pos, tstmp);
 734                 seeked = need_packet = 0;
 735                 st_eof(flushed=1);
 736                 return -1;
 737         }
 738 //printf("seeked pos = %ld, %ld\n", pos, tstmp);
 739         seek_pos = curr_pos = pos;
 740         return 0;
 741 }
 742
 743 FFAudioStream::FFAudioStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 744  : FFStream(ffmpeg, strm, fidx)
 745 {
 746         this->idx = idx;
 747         channel0 = channels = 0;
 748         sample_rate = 0;
 749         mbsz = 0;
 750         frame_sz = AUDIO_MIN_FRAME_SZ;
 751         length = 0;
 752         resample_context = 0;
 753         swr_ichs = swr_ifmt = swr_irate = 0;
 754
 755         aud_bfr_sz = 0;
 756         aud_bfr = 0;
 757
 758 // history buffer
 759         nch = 2;
 760         sz = 0x10000;
 761         long bsz = sz * nch;
 762         bfr = new float[bsz];
 763         lmt = bfr + bsz;
 764         reset_history();
 765 }
 766
 767 FFAudioStream::~FFAudioStream()
 768 {
 769         if( resample_context ) swr_free(&resample_context);
 770         delete [] aud_bfr;
 771         delete [] bfr;
 772 }
 773
 774 void FFAudioStream::init_swr(int ichs, int ifmt, int irate)
 775 {
 776         if( resample_context ) {
 777                 if( swr_ichs == ichs && swr_ifmt == ifmt && swr_irate == irate )
 778                         return;
 779                 swr_free(&resample_context);
 780         }
 781         swr_ichs = ichs;  swr_ifmt = ifmt;  swr_irate = irate;
 782         if( ichs == channels && ifmt == AV_SAMPLE_FMT_FLT && irate == sample_rate )
 783                 return;
 784         uint64_t ilayout = av_get_default_channel_layout(ichs);
 785         if( !ilayout ) ilayout = ((uint64_t)1<<ichs) - 1;
 786         uint64_t olayout = av_get_default_channel_layout(channels);
 787         if( !olayout ) olayout = ((uint64_t)1<<channels) - 1;
 788         resample_context = swr_alloc_set_opts(NULL,
 789                 olayout, AV_SAMPLE_FMT_FLT, sample_rate,
 790                 ilayout, (AVSampleFormat)ifmt, irate,
 791                 0, NULL);
 792         if( resample_context )
 793                 swr_init(resample_context);
 794 }
 795
 796 int FFAudioStream::get_samples(float *&samples, uint8_t **data, int len)
 797 {
 798         samples = *(float **)data;
 799         if( resample_context ) {
 800                 if( len > aud_bfr_sz ) {
 801                         delete [] aud_bfr;
 802                         aud_bfr = 0;
 803                 }
 804                 if( !aud_bfr ) {
 805                         aud_bfr_sz = len;
 806                         aud_bfr = new float[aud_bfr_sz*channels];
 807                 }
 808                 int ret = swr_convert(resample_context,
 809                         (uint8_t**)&aud_bfr, aud_bfr_sz, (const uint8_t**)data, len);
 810                 if( ret < 0 ) {
 811                         ff_err(ret, "FFAudioStream::get_samples: swr_convert failed\n");
 812                         return -1;
 813                 }
 814                 samples = aud_bfr;
 815                 len = ret;
 816         }
 817         return len;
 818 }
 819
 820 int FFAudioStream::load_history(uint8_t **data, int len)
 821 {
 822         float *samples;
 823         len = get_samples(samples, data, len);
 824         if( len > 0 ) {
 825                 // biggest user bfr since seek + frame
 826                 realloc(mbsz + len + 1, channels);
 827                 write(samples, len);
 828         }
 829         return len;
 830 }
 831
 832 int FFAudioStream::decode_frame(AVFrame *frame)
 833 {
 834         int first_frame = seeked;  seeked = 0;
 835         frame->best_effort_timestamp = AV_NOPTS_VALUE;
 836         int ret = avcodec_receive_frame(avctx, frame);
 837         if( ret < 0 ) {
 838                 if( first_frame || ret == AVERROR(EAGAIN) ) return 0;
 839                 if( ret == AVERROR_EOF ) { st_eof(1); return 0; }
 840                 ff_err(ret, "FFAudioStream::decode_frame: Could not read audio frame.\nfile:%s\n",
 841                                 ffmpeg->fmt_ctx->url);
 842                 return -1;
 843         }
 844         int64_t pkt_ts = frame->best_effort_timestamp;
 845         if( pkt_ts != AV_NOPTS_VALUE ) {
 846                 double ts = ffmpeg->to_secs(pkt_ts - nudge, st->time_base);
 847                 double t = (double)curr_pos / sample_rate;
 848 // some time_base clocks are very grainy, too grainy for audio (clicks, pops)
 849                 if( fabs(ts - t) > AUDIO_PTS_TOLERANCE )
 850                         curr_pos = ts * sample_rate + 0.5;
 851         }
 852         return 1;
 853 }
 854
 855 int FFAudioStream::encode_activate()
 856 {
 857         if( writing >= 0 ) return writing;
 858         if( !avctx->codec ) return writing = 0;
 859         frame_sz = avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE ?
 860                 10000 : avctx->frame_size;
 861         return FFStream::encode_activate();
 862 }
 863
 864 int64_t FFAudioStream::load_buffer(double ** const sp, int len)
 865 {
 866         reserve(len+1, st->codecpar->channels);
 867         for( int ch=0; ch<nch; ++ch )
 868                 write(sp[ch], len, ch);
 869         return put_inp(len);
 870 }
 871
 872 int FFAudioStream::in_history(int64_t pos)
 873 {
 874         if( pos > curr_pos ) return 0;
 875         int64_t len = hpos;
 876         if( len > sz ) len = sz;
 877         if( pos < curr_pos - len ) return 0;
 878         return 1;
 879 }
 880
 881
 882 int FFAudioStream::init_frame(AVFrame *frame)
 883 {
 884         frame->nb_samples = frame_sz;
 885         frame->format = avctx->sample_fmt;
 886         frame->channel_layout = avctx->channel_layout;
 887         frame->sample_rate = avctx->sample_rate;
 888         int ret = av_frame_get_buffer(frame, 0);
 889         if (ret < 0)
 890                 ff_err(ret, "FFAudioStream::init_frame: av_frame_get_buffer failed\n");
 891         return ret;
 892 }
 893
 894 int FFAudioStream::load(int64_t pos, int len)
 895 {
 896         if( audio_seek(pos) < 0 ) return -1;
 897         if( !frame && !(frame=av_frame_alloc()) ) {
 898                 fprintf(stderr, "FFAudioStream::load: av_frame_alloc failed\n");
 899                 return -1;
 900         }
 901         if( mbsz < len ) mbsz = len;
 902         int64_t end_pos = pos + len;
 903         int ret = 0, i = len / frame_sz + MAX_RETRY;
 904         while( ret>=0 && !flushed && curr_pos<end_pos && --i>=0 ) {
 905                 ret = read_frame(frame);
 906                 if( ret > 0 && frame->nb_samples > 0 ) {
 907                         init_swr(frame->channels, frame->format, frame->sample_rate);
 908                         load_history(&frame->extended_data[0], frame->nb_samples);
 909                         curr_pos += frame->nb_samples;
 910                 }
 911         }
 912         if( end_pos > curr_pos ) {
 913                 zero(end_pos - curr_pos);
 914                 curr_pos = end_pos;
 915         }
 916         len = curr_pos - pos;
 917         iseek(len);
 918         return len;
 919 }
 920
 921 int FFAudioStream::audio_seek(int64_t pos)
 922 {
 923         if( decode_activate() <= 0 ) return -1;
 924         if( !st->codecpar ) return -1;
 925         if( in_history(pos) ) return 0;
 926         if( pos == curr_pos ) return 0;
 927         reset_history();  mbsz = 0;
 928 // guarentee preload > 1sec samples
 929         if( (pos-=sample_rate) < 0 ) pos = 0;
 930         if( seek(pos, sample_rate) < 0 ) return -1;
 931         return 1;
 932 }
 933
 934 int FFAudioStream::encode(double **samples, int len)
 935 {
 936         if( encode_activate() <= 0 ) return -1;
 937         ffmpeg->flow_ctl();
 938         int ret = 0;
 939         int64_t count = samples ? load_buffer(samples, len) : used();
 940         int frame_sz1 = samples ? frame_sz-1 : 0;
 941         FFrame *frm = 0;
 942
 943         while( ret >= 0 && count > frame_sz1 ) {
 944                 frm = new FFrame(this);
 945                 if( (ret=frm->initted()) < 0 ) break;
 946                 AVFrame *frame = *frm;
 947                 len = count >= frame_sz ? frame_sz : count;
 948                 float *bfrp = get_outp(len);
 949                 ret =  swr_convert(resample_context,
 950                         (uint8_t **)frame->extended_data, len,
 951                         (const uint8_t **)&bfrp, len);
 952                 if( ret < 0 ) {
 953                         ff_err(ret, "FFAudioStream::encode: swr_convert failed\n");
 954                         break;
 955                 }
 956                 frame->nb_samples = len;
 957                 frm->queue(curr_pos);
 958                 frm = 0;
 959                 curr_pos += len;
 960                 count -= len;
 961         }
 962
 963         delete frm;
 964         return ret >= 0 ? 0 : 1;
 965 }
 966
 967 int FFAudioStream::drain()
 968 {
 969         return encode(0,0);
 970 }
 971
 972 int FFAudioStream::encode_frame(AVFrame *frame)
 973 {
 974         return FFStream::encode_frame(frame);
 975 }
 976
 977 int FFAudioStream::write_packet(FFPacket &pkt)
 978 {
 979         return FFStream::write_packet(pkt);
 980 }
 981
 982 void FFAudioStream::load_markers()
 983 {
 984         IndexState *index_state = ffmpeg->file_base->asset->index_state;
 985         if( !index_state || idx >= index_state->audio_markers.size() ) return;
 986         if( index_state->marker_status == MARKERS_NOTTESTED ) return;
 987         FFStream::load_markers(*index_state->audio_markers[idx], sample_rate);
 988 }
 989
 990 IndexMarks *FFAudioStream::get_markers()
 991 {
 992         IndexState *index_state = ffmpeg->file_base->asset->index_state;
 993         if( !index_state || idx >= index_state->audio_markers.size() ) return 0;
 994         return index_state->audio_markers[idx];
 995 }
 996
 997 FFVideoStream::FFVideoStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 998  : FFStream(ffmpeg, strm, fidx)
 999 {
1000         this->idx = idx;
1001         width = height = 0;
1002         frame_rate = 0;
1003         aspect_ratio = 0;
1004         length = 0;
1005         interlaced = 0;
1006         top_field_first = 0;
1007 }
1008
1009 FFVideoStream::~FFVideoStream()
1010 {
1011 }
1012
1013 AVHWDeviceType FFVideoStream::decode_hw_activate()
1014 {
1015         AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
1016         const char *hw_dev = ffmpeg->opt_hw_dev;
1017         if( !hw_dev ) hw_dev = getenv("CIN_HW_DEV");
1018         if( !hw_dev ) hw_dev = ffmpeg->ff_hw_dev();
1019         if( hw_dev && *hw_dev && strcmp(_("none"), hw_dev) ) {
1020                 type = av_hwdevice_find_type_by_name(hw_dev);
1021                 if( type == AV_HWDEVICE_TYPE_NONE ) {
1022                         fprintf(stderr, "Device type %s is not supported.\n", hw_dev);
1023                         fprintf(stderr, "Available device types:");
1024                         while( (type = av_hwdevice_iterate_types(type)) != AV_HWDEVICE_TYPE_NONE )
1025                                 fprintf(stderr, " %s", av_hwdevice_get_type_name(type));
1026                         fprintf(stderr, "\n");
1027                 }
1028         }
1029         return type;
1030 }
1031
1032 int FFVideoStream::decode_hw_format(AVCodec *decoder, AVHWDeviceType type)
1033 {
1034         int ret = 0;
1035         hw_pix_fmt = AV_PIX_FMT_NONE;
1036         for( int i=0; ; ++i ) {
1037                 const AVCodecHWConfig *config = avcodec_get_hw_config(decoder, i);
1038                 if( !config ) {
1039                         fprintf(stderr, "Decoder %s does not support device type %s.\n",
1040                                 decoder->name, av_hwdevice_get_type_name(type));
1041                         break;
1042                 }
1043                 if( (config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX) != 0 &&
1044                     config->device_type == type ) {
1045                         hw_pix_fmt = config->pix_fmt;
1046                         break;
1047                 }
1048         }
1049         if( hw_pix_fmt >= 0 ) {
1050                 hw_pixfmt = hw_pix_fmt;
1051                 avctx->get_format  = get_hw_format;
1052                 ret = av_hwdevice_ctx_create(&hw_device_ctx, type, 0, 0, 0);
1053                 if( ret >= 0 ) {
1054                         avctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
1055                         ret = 1;
1056                 }
1057                 else
1058                         ff_err(ret, "Failed HW device create.\ndev:%s\n",
1059                                 av_hwdevice_get_type_name(type));
1060         }
1061         return ret;
1062 }
1063
1064 AVHWDeviceType FFVideoStream::encode_hw_activate(const char *hw_dev)
1065 {
1066         AVBufferRef *hw_device_ctx = 0;
1067         AVBufferRef *hw_frames_ref = 0;
1068         AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
1069         if( strcmp(_("none"), hw_dev) ) {
1070                 type = av_hwdevice_find_type_by_name(hw_dev);
1071                 if( type != AV_HWDEVICE_TYPE_VAAPI ) {
1072                         fprintf(stderr, "currently, only vaapi hw encode is supported\n");
1073                         type = AV_HWDEVICE_TYPE_NONE;
1074                 }
1075         }
1076         if( type != AV_HWDEVICE_TYPE_NONE ) {
1077                 int ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, 0, 0, 0);
1078                 if( ret < 0 ) {
1079                         ff_err(ret, "Failed to create a HW device.\n");
1080                         type = AV_HWDEVICE_TYPE_NONE;
1081                 }
1082         }
1083         if( type != AV_HWDEVICE_TYPE_NONE ) {
1084                 hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx);
1085                 if( !hw_frames_ref ) {
1086                         fprintf(stderr, "Failed to create HW frame context.\n");
1087                         type = AV_HWDEVICE_TYPE_NONE;
1088                 }
1089         }
1090         if( type != AV_HWDEVICE_TYPE_NONE ) {
1091                 AVHWFramesContext *frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data);
1092                 frames_ctx->format = AV_PIX_FMT_VAAPI;
1093                 frames_ctx->sw_format = AV_PIX_FMT_NV12;
1094                 frames_ctx->width = width;
1095                 frames_ctx->height = height;
1096                 frames_ctx->initial_pool_size = 0; // 200;
1097                 int ret = av_hwframe_ctx_init(hw_frames_ref);
1098                 if( ret >= 0 ) {
1099                         avctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref);
1100                         if( !avctx->hw_frames_ctx ) ret = AVERROR(ENOMEM);
1101                 }
1102                 if( ret < 0 ) {
1103                         ff_err(ret, "Failed to initialize HW frame context.\n");
1104                         type = AV_HWDEVICE_TYPE_NONE;
1105                 }
1106                 av_buffer_unref(&hw_frames_ref);
1107         }
1108         return type;
1109 }
1110
1111 int FFVideoStream::encode_hw_write(FFrame *picture)
1112 {
1113         int ret = 0;
1114         AVFrame *hw_frm = 0;
1115         switch( avctx->pix_fmt ) {
1116         case AV_PIX_FMT_VAAPI:
1117                 hw_frm = av_frame_alloc();
1118                 if( !hw_frm ) { ret = AVERROR(ENOMEM);  break; }
1119                 ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, hw_frm, 0);
1120                 if( ret < 0 ) break;
1121                 ret = av_hwframe_transfer_data(hw_frm, *picture, 0);
1122                 if( ret < 0 ) break;
1123                 picture->set_hw_frame(hw_frm);
1124                 return 0;
1125         default:
1126                 return 0;
1127         }
1128         av_frame_free(&hw_frm);
1129         ff_err(ret, "Error while transferring frame data to GPU.\n");
1130         return ret;
1131 }
1132
1133 int FFVideoStream::decode_frame(AVFrame *frame)
1134 {
1135         int first_frame = seeked;  seeked = 0;
1136         int ret = avcodec_receive_frame(avctx, frame);
1137         if( ret < 0 ) {
1138                 if( first_frame || ret == AVERROR(EAGAIN) ) return 0;
1139                 if( ret == AVERROR(EAGAIN) ) return 0;
1140                 if( ret == AVERROR_EOF ) { st_eof(1); return 0; }
1141                 ff_err(ret, "FFVideoStream::decode_frame: Could not read video frame.\nfile:%s\n,",
1142                                 ffmpeg->fmt_ctx->url);
1143                 return -1;
1144         }
1145         int64_t pkt_ts = frame->best_effort_timestamp;
1146         if( pkt_ts != AV_NOPTS_VALUE )
1147                 curr_pos = ffmpeg->to_secs(pkt_ts - nudge, st->time_base) * frame_rate + 0.5;
1148         return 1;
1149 }
1150
1151 int FFVideoStream::load(VFrame *vframe, int64_t pos)
1152 {
1153         int ret = video_seek(pos);
1154         if( ret < 0 ) return -1;
1155         if( !frame && !(frame=av_frame_alloc()) ) {
1156                 fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
1157                 return -1;
1158         }
1159         int i = MAX_RETRY + pos - curr_pos;
1160         while( ret>=0 && !flushed && curr_pos<=pos && --i>=0 ) {
1161                 ret = read_frame(frame);
1162                 if( ret > 0 ) ++curr_pos;
1163         }
1164         if( frame->format == AV_PIX_FMT_NONE || frame->width <= 0 || frame->height <= 0 )
1165                 ret = -1;
1166         if( ret >= 0 ) {
1167                 ret = convert_cmodel(vframe, frame);
1168         }
1169         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
1170         return ret;
1171 }
1172
1173 int FFVideoStream::video_seek(int64_t pos)
1174 {
1175         if( decode_activate() <= 0 ) return -1;
1176         if( !st->codecpar ) return -1;
1177         if( pos == curr_pos-1 && !seeked ) return 0;
1178 // if close enough, just read up to current
1179         int gop = avctx->gop_size;
1180         if( gop < 4 ) gop = 4;
1181         if( gop > 64 ) gop = 64;
1182         int read_limit = curr_pos + 3*gop;
1183         if( pos >= curr_pos && pos <= read_limit ) return 0;
1184 // guarentee preload more than 2*gop frames
1185         if( seek(pos - 3*gop, frame_rate) < 0 ) return -1;
1186         return 1;
1187 }
1188
1189 int FFVideoStream::init_frame(AVFrame *picture)
1190 {
1191         switch( avctx->pix_fmt ) {
1192         case AV_PIX_FMT_VAAPI:
1193                 picture->format = AV_PIX_FMT_NV12;
1194                 break;
1195         default:
1196                 picture->format = avctx->pix_fmt;
1197                 break;
1198         }
1199         picture->width  = avctx->width;
1200         picture->height = avctx->height;
1201         int ret = av_frame_get_buffer(picture, 32);
1202         return ret;
1203 }
1204
1205 int FFVideoStream::encode(VFrame *vframe)
1206 {
1207         if( encode_activate() <= 0 ) return -1;
1208         ffmpeg->flow_ctl();
1209         FFrame *picture = new FFrame(this);
1210         int ret = picture->initted();
1211         if( ret >= 0 ) {
1212                 AVFrame *frame = *picture;
1213                 frame->pts = curr_pos;
1214                 ret = convert_pixfmt(vframe, frame);
1215         }
1216         if( ret >= 0 && avctx->hw_frames_ctx )
1217                 encode_hw_write(picture);
1218         if( ret >= 0 ) {
1219                 picture->queue(curr_pos);
1220                 ++curr_pos;
1221         }
1222         else {
1223                 fprintf(stderr, "FFVideoStream::encode: encode failed\n");
1224                 delete picture;
1225         }
1226         return ret >= 0 ? 0 : 1;
1227 }
1228
1229 int FFVideoStream::drain()
1230 {
1231         return 0;
1232 }
1233
1234 int FFVideoStream::encode_frame(AVFrame *frame)
1235 {
1236         if( frame ) {
1237                 frame->interlaced_frame = interlaced;
1238                 frame->top_field_first = top_field_first;
1239         }
1240         return FFStream::encode_frame(frame);
1241 }
1242
1243 int FFVideoStream::write_packet(FFPacket &pkt)
1244 {
1245         if( !(ffmpeg->fmt_ctx->oformat->flags & AVFMT_VARIABLE_FPS) )
1246                 pkt->duration = 1;
1247         return FFStream::write_packet(pkt);
1248 }
1249
1250 AVPixelFormat FFVideoConvert::color_model_to_pix_fmt(int color_model)
1251 {
1252         switch( color_model ) {
1253         case BC_YUV422:         return AV_PIX_FMT_YUYV422;
1254         case BC_RGB888:         return AV_PIX_FMT_RGB24;
1255         case BC_RGBA8888:       return AV_PIX_FMT_RGBA;
1256         case BC_BGR8888:        return AV_PIX_FMT_BGR0;
1257         case BC_BGR888:         return AV_PIX_FMT_BGR24;
1258         case BC_ARGB8888:       return AV_PIX_FMT_ARGB;
1259         case BC_ABGR8888:       return AV_PIX_FMT_ABGR;
1260         case BC_RGB8:           return AV_PIX_FMT_RGB8;
1261         case BC_YUV420P:        return AV_PIX_FMT_YUV420P;
1262         case BC_YUV422P:        return AV_PIX_FMT_YUV422P;
1263         case BC_YUV444P:        return AV_PIX_FMT_YUV444P;
1264         case BC_YUV411P:        return AV_PIX_FMT_YUV411P;
1265         case BC_RGB565:         return AV_PIX_FMT_RGB565;
1266         case BC_RGB161616:      return AV_PIX_FMT_RGB48LE;
1267         case BC_RGBA16161616:   return AV_PIX_FMT_RGBA64LE;
1268         case BC_AYUV16161616:   return AV_PIX_FMT_AYUV64LE;
1269         case BC_GBRP:           return AV_PIX_FMT_GBRP;
1270         default: break;
1271         }
1272
1273         return AV_PIX_FMT_NB;
1274 }
1275
1276 int FFVideoConvert::pix_fmt_to_color_model(AVPixelFormat pix_fmt)
1277 {
1278         switch (pix_fmt) {
1279         case AV_PIX_FMT_YUYV422:        return BC_YUV422;
1280         case AV_PIX_FMT_RGB24:          return BC_RGB888;
1281         case AV_PIX_FMT_RGBA:           return BC_RGBA8888;
1282         case AV_PIX_FMT_BGR0:           return BC_BGR8888;
1283         case AV_PIX_FMT_BGR24:          return BC_BGR888;
1284         case AV_PIX_FMT_ARGB:           return BC_ARGB8888;
1285         case AV_PIX_FMT_ABGR:           return BC_ABGR8888;
1286         case AV_PIX_FMT_RGB8:           return BC_RGB8;
1287         case AV_PIX_FMT_YUV420P:        return BC_YUV420P;
1288         case AV_PIX_FMT_YUV422P:        return BC_YUV422P;
1289         case AV_PIX_FMT_YUV444P:        return BC_YUV444P;
1290         case AV_PIX_FMT_YUV411P:        return BC_YUV411P;
1291         case AV_PIX_FMT_RGB565:         return BC_RGB565;
1292         case AV_PIX_FMT_RGB48LE:        return BC_RGB161616;
1293         case AV_PIX_FMT_RGBA64LE:       return BC_RGBA16161616;
1294         case AV_PIX_FMT_AYUV64LE:       return BC_AYUV16161616;
1295         case AV_PIX_FMT_GBRP:           return BC_GBRP;
1296         default: break;
1297         }
1298
1299         return -1;
1300 }
1301
1302 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip)
1303 {
1304         AVFrame *ipic = av_frame_alloc();
1305         int ret = convert_picture_vframe(frame, ip, ipic);
1306         av_frame_free(&ipic);
1307         return ret;
1308 }
1309
1310 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip, AVFrame *ipic)
1311 {
1312         int cmodel = frame->get_color_model();
1313         AVPixelFormat ofmt = color_model_to_pix_fmt(cmodel);
1314         if( ofmt == AV_PIX_FMT_NB ) return -1;
1315         int size = av_image_fill_arrays(ipic->data, ipic->linesize,
1316                 frame->get_data(), ofmt, frame->get_w(), frame->get_h(), 1);
1317         if( size < 0 ) return -1;
1318
1319         int bpp = BC_CModels::calculate_pixelsize(cmodel);
1320         int ysz = bpp * frame->get_w(), usz = ysz;
1321         switch( cmodel ) {
1322         case BC_YUV410P:
1323         case BC_YUV411P:
1324                 usz /= 2;
1325         case BC_YUV420P:
1326         case BC_YUV422P:
1327                 usz /= 2;
1328         case BC_YUV444P:
1329         case BC_GBRP:
1330                 // override av_image_fill_arrays() for planar types
1331                 ipic->data[0] = frame->get_y();  ipic->linesize[0] = ysz;
1332                 ipic->data[1] = frame->get_u();  ipic->linesize[1] = usz;
1333                 ipic->data[2] = frame->get_v();  ipic->linesize[2] = usz;
1334                 break;
1335         default:
1336                 ipic->data[0] = frame->get_data();
1337                 ipic->linesize[0] = frame->get_bytes_per_line();
1338                 break;
1339         }
1340
1341         AVPixelFormat pix_fmt = (AVPixelFormat)ip->format;
1342         FFVideoStream *vid =(FFVideoStream *)this;
1343         if( pix_fmt == vid->hw_pixfmt ) {
1344                 int ret = 0;
1345                 if( !sw_frame && !(sw_frame=av_frame_alloc()) )
1346                         ret = AVERROR(ENOMEM);
1347                 if( !ret ) {
1348                         ret = av_hwframe_transfer_data(sw_frame, ip, 0);
1349                         ip = sw_frame;
1350                         pix_fmt = (AVPixelFormat)ip->format;
1351                 }
1352                 if( ret < 0 ) {
1353                         eprintf(_("Error retrieving data from GPU to CPU\nfile: %s\n"),
1354                                 vid->ffmpeg->fmt_ctx->url);
1355                         return -1;
1356                 }
1357         }
1358         convert_ctx = sws_getCachedContext(convert_ctx, ip->width, ip->height, pix_fmt,
1359                 frame->get_w(), frame->get_h(), ofmt, SWS_POINT, NULL, NULL, NULL);
1360         if( !convert_ctx ) {
1361                 fprintf(stderr, "FFVideoConvert::convert_picture_frame:"
1362                                 " sws_getCachedContext() failed\n");
1363                 return -1;
1364         }
1365         int ret = sws_scale(convert_ctx, ip->data, ip->linesize, 0, ip->height,
1366             ipic->data, ipic->linesize);
1367         if( ret < 0 ) {
1368                 ff_err(ret, "FFVideoConvert::convert_picture_frame: sws_scale() failed\nfile: %s\n",
1369                         vid->ffmpeg->fmt_ctx->url);
1370                 return -1;
1371         }
1372         return 0;
1373 }
1374
1375 int FFVideoConvert::convert_cmodel(VFrame *frame, AVFrame *ip)
1376 {
1377         // try direct transfer
1378         if( !convert_picture_vframe(frame, ip) ) return 1;
1379         // use indirect transfer
1380         AVPixelFormat ifmt = (AVPixelFormat)ip->format;
1381         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ifmt);
1382         int max_bits = 0;
1383         for( int i = 0; i <desc->nb_components; ++i ) {
1384                 int bits = desc->comp[i].depth;
1385                 if( bits > max_bits ) max_bits = bits;
1386         }
1387         int imodel = pix_fmt_to_color_model(ifmt);
1388         int imodel_is_yuv = BC_CModels::is_yuv(imodel);
1389         int cmodel = frame->get_color_model();
1390         int cmodel_is_yuv = BC_CModels::is_yuv(cmodel);
1391         if( imodel < 0 || imodel_is_yuv != cmodel_is_yuv ) {
1392                 imodel = cmodel_is_yuv ?
1393                     (BC_CModels::has_alpha(cmodel) ?
1394                         BC_AYUV16161616 :
1395                         (max_bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
1396                     (BC_CModels::has_alpha(cmodel) ?
1397                         (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
1398                         (max_bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
1399         }
1400         VFrame vframe(ip->width, ip->height, imodel);
1401         if( convert_picture_vframe(&vframe, ip) ) return -1;
1402         frame->transfer_from(&vframe);
1403         return 1;
1404 }
1405
1406 int FFVideoConvert::transfer_cmodel(VFrame *frame, AVFrame *ifp)
1407 {
1408         int ret = convert_cmodel(frame, ifp);
1409         if( ret > 0 ) {
1410                 const AVDictionary *src = ifp->metadata;
1411                 AVDictionaryEntry *t = NULL;
1412                 BC_Hash *hp = frame->get_params();
1413                 //hp->clear();
1414                 while( (t=av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)) )
1415                         hp->update(t->key, t->value);
1416         }
1417         return ret;
1418 }
1419
1420 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op)
1421 {
1422         AVFrame *opic = av_frame_alloc();
1423         int ret = convert_vframe_picture(frame, op, opic);
1424         av_frame_free(&opic);
1425         return ret;
1426 }
1427
1428 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op, AVFrame *opic)
1429 {
1430         int cmodel = frame->get_color_model();
1431         AVPixelFormat ifmt = color_model_to_pix_fmt(cmodel);
1432         if( ifmt == AV_PIX_FMT_NB ) return -1;
1433         int size = av_image_fill_arrays(opic->data, opic->linesize,
1434                  frame->get_data(), ifmt, frame->get_w(), frame->get_h(), 1);
1435         if( size < 0 ) return -1;
1436
1437         int bpp = BC_CModels::calculate_pixelsize(cmodel);
1438         int ysz = bpp * frame->get_w(), usz = ysz;
1439         switch( cmodel ) {
1440         case BC_YUV410P:
1441         case BC_YUV411P:
1442                 usz /= 2;
1443         case BC_YUV420P:
1444         case BC_YUV422P:
1445                 usz /= 2;
1446         case BC_YUV444P:
1447         case BC_GBRP:
1448                 // override av_image_fill_arrays() for planar types
1449                 opic->data[0] = frame->get_y();  opic->linesize[0] = ysz;
1450                 opic->data[1] = frame->get_u();  opic->linesize[1] = usz;
1451                 opic->data[2] = frame->get_v();  opic->linesize[2] = usz;
1452                 break;
1453         default:
1454                 opic->data[0] = frame->get_data();
1455                 opic->linesize[0] = frame->get_bytes_per_line();
1456                 break;
1457         }
1458
1459         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1460         convert_ctx = sws_getCachedContext(convert_ctx, frame->get_w(), frame->get_h(),
1461                 ifmt, op->width, op->height, ofmt, SWS_POINT, NULL, NULL, NULL);
1462         if( !convert_ctx ) {
1463                 fprintf(stderr, "FFVideoConvert::convert_frame_picture:"
1464                                 " sws_getCachedContext() failed\n");
1465                 return -1;
1466         }
1467         int ret = sws_scale(convert_ctx, opic->data, opic->linesize, 0, frame->get_h(),
1468                         op->data, op->linesize);
1469         if( ret < 0 ) {
1470                 ff_err(ret, "FFVideoConvert::convert_frame_picture: sws_scale() failed\n");
1471                 return -1;
1472         }
1473         return 0;
1474 }
1475
1476 int FFVideoConvert::convert_pixfmt(VFrame *frame, AVFrame *op)
1477 {
1478         // try direct transfer
1479         if( !convert_vframe_picture(frame, op) ) return 1;
1480         // use indirect transfer
1481         int cmodel = frame->get_color_model();
1482         int max_bits = BC_CModels::calculate_pixelsize(cmodel) * 8;
1483         max_bits /= BC_CModels::components(cmodel);
1484         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1485         int imodel = pix_fmt_to_color_model(ofmt);
1486         int imodel_is_yuv = BC_CModels::is_yuv(imodel);
1487         int cmodel_is_yuv = BC_CModels::is_yuv(cmodel);
1488         if( imodel < 0 || imodel_is_yuv != cmodel_is_yuv ) {
1489                 imodel = cmodel_is_yuv ?
1490                     (BC_CModels::has_alpha(cmodel) ?
1491                         BC_AYUV16161616 :
1492                         (max_bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
1493                     (BC_CModels::has_alpha(cmodel) ?
1494                         (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
1495                         (max_bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
1496         }
1497         VFrame vframe(frame->get_w(), frame->get_h(), imodel);
1498         vframe.transfer_from(frame);
1499         if( !convert_vframe_picture(&vframe, op) ) return 1;
1500         return -1;
1501 }
1502
1503 int FFVideoConvert::transfer_pixfmt(VFrame *frame, AVFrame *ofp)
1504 {
1505         int ret = convert_pixfmt(frame, ofp);
1506         if( ret > 0 ) {
1507                 BC_Hash *hp = frame->get_params();
1508                 AVDictionary **dict = &ofp->metadata;
1509                 //av_dict_free(dict);
1510                 for( int i=0; i<hp->size(); ++i ) {
1511                         char *key = hp->get_key(i), *val = hp->get_value(i);
1512                         av_dict_set(dict, key, val, 0);
1513                 }
1514         }
1515         return ret;
1516 }
1517
1518 void FFVideoStream::load_markers()
1519 {
1520         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1521         if( !index_state || idx >= index_state->video_markers.size() ) return;
1522         FFStream::load_markers(*index_state->video_markers[idx], frame_rate);
1523 }
1524
1525 IndexMarks *FFVideoStream::get_markers()
1526 {
1527         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1528         if( !index_state || idx >= index_state->video_markers.size() ) return 0;
1529         return !index_state ? 0 : index_state->video_markers[idx];
1530 }
1531
1532
1533 FFMPEG::FFMPEG(FileBase *file_base)
1534 {
1535         fmt_ctx = 0;
1536         this->file_base = file_base;
1537         memset(file_format,0,sizeof(file_format));
1538         mux_lock = new Condition(0,"FFMPEG::mux_lock",0);
1539         flow_lock = new Condition(1,"FFStream::flow_lock",0);
1540         done = -1;
1541         flow = 1;
1542         decoding = encoding = 0;
1543         has_audio = has_video = 0;
1544         opts = 0;
1545         opt_duration = -1;
1546         opt_video_filter = 0;
1547         opt_audio_filter = 0;
1548         opt_hw_dev = 0;
1549         fflags = 0;
1550         char option_path[BCTEXTLEN];
1551         set_option_path(option_path, "%s", "ffmpeg.opts");
1552         read_options(option_path, opts);
1553 }
1554
1555 FFMPEG::~FFMPEG()
1556 {
1557         ff_lock("FFMPEG::~FFMPEG()");
1558         close_encoder();
1559         ffaudio.remove_all_objects();
1560         ffvideo.remove_all_objects();
1561         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
1562         ff_unlock();
1563         delete flow_lock;
1564         delete mux_lock;
1565         av_dict_free(&opts);
1566         delete [] opt_video_filter;
1567         delete [] opt_audio_filter;
1568         delete [] opt_hw_dev;
1569 }
1570
1571 int FFMPEG::check_sample_rate(AVCodec *codec, int sample_rate)
1572 {
1573         const int *p = codec->supported_samplerates;
1574         if( !p ) return sample_rate;
1575         while( *p != 0 ) {
1576                 if( *p == sample_rate ) return *p;
1577                 ++p;
1578         }
1579         return 0;
1580 }
1581
1582 static inline AVRational std_frame_rate(int i)
1583 {
1584         static const int m1 = 1001*12, m2 = 1000*12;
1585         static const int freqs[] = {
1586                 40*m1, 48*m1, 50*m1, 60*m1, 80*m1,120*m1, 240*m1,
1587                 24*m2, 30*m2, 60*m2, 12*m2, 15*m2, 48*m2, 0,
1588         };
1589         int freq = i<30*12 ? (i+1)*1001 : freqs[i-30*12];
1590         return (AVRational) { freq, 1001*12 };
1591 }
1592
1593 AVRational FFMPEG::check_frame_rate(AVCodec *codec, double frame_rate)
1594 {
1595         const AVRational *p = codec->supported_framerates;
1596         AVRational rate, best_rate = (AVRational) { 0, 0 };
1597         double max_err = 1.;  int i = 0;
1598         while( ((p ? (rate=*p++) : (rate=std_frame_rate(i++))), rate.num) != 0 ) {
1599                 double framerate = (double) rate.num / rate.den;
1600                 double err = fabs(frame_rate/framerate - 1.);
1601                 if( err >= max_err ) continue;
1602                 max_err = err;
1603                 best_rate = rate;
1604         }
1605         return max_err < 0.0001 ? best_rate : (AVRational) { 0, 0 };
1606 }
1607
1608 AVRational FFMPEG::to_sample_aspect_ratio(Asset *asset)
1609 {
1610 #if 1
1611         double display_aspect = asset->width / (double)asset->height;
1612         double sample_aspect = display_aspect / asset->aspect_ratio;
1613         int width = 1000000, height = width * sample_aspect + 0.5;
1614         float w, h;
1615         MWindow::create_aspect_ratio(w, h, width, height);
1616         return (AVRational){(int)w, (int)h};
1617 #else
1618 // square pixels
1619         return (AVRational){1, 1};
1620 #endif
1621 }
1622
1623 AVRational FFMPEG::to_time_base(int sample_rate)
1624 {
1625         return (AVRational){1, sample_rate};
1626 }
1627
1628 int FFMPEG::get_fmt_score(AVSampleFormat dst_fmt, AVSampleFormat src_fmt)
1629 {
1630         int score = 0;
1631         int dst_planar = av_sample_fmt_is_planar(dst_fmt);
1632         int src_planar = av_sample_fmt_is_planar(src_fmt);
1633         if( dst_planar != src_planar ) ++score;
1634         int dst_bytes = av_get_bytes_per_sample(dst_fmt);
1635         int src_bytes = av_get_bytes_per_sample(src_fmt);
1636         score += (src_bytes > dst_bytes ? 100 : -10) * (src_bytes - dst_bytes);
1637         int src_packed = av_get_packed_sample_fmt(src_fmt);
1638         int dst_packed = av_get_packed_sample_fmt(dst_fmt);
1639         if( dst_packed == AV_SAMPLE_FMT_S32 && src_packed == AV_SAMPLE_FMT_FLT ) score += 20;
1640         if( dst_packed == AV_SAMPLE_FMT_FLT && src_packed == AV_SAMPLE_FMT_S32 ) score += 2;
1641         return score;
1642 }
1643
1644 AVSampleFormat FFMPEG::find_best_sample_fmt_of_list(
1645                 const AVSampleFormat *sample_fmts, AVSampleFormat src_fmt)
1646 {
1647         AVSampleFormat best = AV_SAMPLE_FMT_NONE;
1648         int best_score = get_fmt_score(best, src_fmt);
1649         for( int i=0; sample_fmts[i] >= 0; ++i ) {
1650                 AVSampleFormat sample_fmt = sample_fmts[i];
1651                 int score = get_fmt_score(sample_fmt, src_fmt);
1652                 if( score >= best_score ) continue;
1653                 best = sample_fmt;  best_score = score;
1654         }
1655         return best;
1656 }
1657
1658
1659 void FFMPEG::set_option_path(char *path, const char *fmt, ...)
1660 {
1661         char *ep = path + BCTEXTLEN-1;
1662         strncpy(path, File::get_cindat_path(), ep-path);
1663         strncat(path, "/ffmpeg/", ep-path);
1664         path += strlen(path);
1665         va_list ap;
1666         va_start(ap, fmt);
1667         path += vsnprintf(path, ep-path, fmt, ap);
1668         va_end(ap);
1669         *path = 0;
1670 }
1671
1672 void FFMPEG::get_option_path(char *path, const char *type, const char *spec)
1673 {
1674         if( *spec == '/' )
1675                 strcpy(path, spec);
1676         else
1677                 set_option_path(path, "%s/%s", type, spec);
1678 }
1679
1680 int FFMPEG::get_format(char *format, const char *path, const char *spec)
1681 {
1682         char option_path[BCTEXTLEN], line[BCTEXTLEN], codec[BCTEXTLEN];
1683         get_option_path(option_path, path, spec);
1684         FILE *fp = fopen(option_path,"r");
1685         if( !fp ) return 1;
1686         int ret = 0;
1687         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1688         if( !ret ) {
1689                 line[sizeof(line)-1] = 0;
1690                 ret = scan_option_line(line, format, codec);
1691         }
1692         fclose(fp);
1693         return ret;
1694 }
1695
1696 int FFMPEG::get_codec(char *codec, const char *path, const char *spec)
1697 {
1698         char option_path[BCTEXTLEN], line[BCTEXTLEN], format[BCTEXTLEN];
1699         get_option_path(option_path, path, spec);
1700         FILE *fp = fopen(option_path,"r");
1701         if( !fp ) return 1;
1702         int ret = 0;
1703         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1704         fclose(fp);
1705         if( !ret ) {
1706                 line[sizeof(line)-1] = 0;
1707                 ret = scan_option_line(line, format, codec);
1708         }
1709         if( !ret ) {
1710                 char *vp = codec, *ep = vp+BCTEXTLEN-1;
1711                 while( vp < ep && *vp && *vp != '|' ) ++vp;
1712                 if( *vp == '|' ) --vp;
1713                 while( vp > codec && (*vp==' ' || *vp=='\t') ) *vp-- = 0;
1714         }
1715         return ret;
1716 }
1717
1718 int FFMPEG::get_file_format()
1719 {
1720         char audio_muxer[BCSTRLEN], video_muxer[BCSTRLEN];
1721         char audio_format[BCSTRLEN], video_format[BCSTRLEN];
1722         audio_muxer[0] = audio_format[0] = 0;
1723         video_muxer[0] = video_format[0] = 0;
1724         Asset *asset = file_base->asset;
1725         int ret = asset ? 0 : 1;
1726         if( !ret && asset->audio_data ) {
1727                 if( !(ret=get_format(audio_format, "audio", asset->acodec)) ) {
1728                         if( get_format(audio_muxer, "format", audio_format) ) {
1729                                 strcpy(audio_muxer, audio_format);
1730                                 audio_format[0] = 0;
1731                         }
1732                 }
1733         }
1734         if( !ret && asset->video_data ) {
1735                 if( !(ret=get_format(video_format, "video", asset->vcodec)) ) {
1736                         if( get_format(video_muxer, "format", video_format) ) {
1737                                 strcpy(video_muxer, video_format);
1738                                 video_format[0] = 0;
1739                         }
1740                 }
1741         }
1742         if( !ret && !audio_muxer[0] && !video_muxer[0] )
1743                 ret = 1;
1744         if( !ret && audio_muxer[0] && video_muxer[0] &&
1745             strcmp(audio_muxer, video_muxer) ) ret = -1;
1746         if( !ret && audio_format[0] && video_format[0] &&
1747             strcmp(audio_format, video_format) ) ret = -1;
1748         if( !ret )
1749                 strcpy(file_format, !audio_format[0] && !video_format[0] ?
1750                         (audio_muxer[0] ? audio_muxer : video_muxer) :
1751                         (audio_format[0] ? audio_format : video_format));
1752         return ret;
1753 }
1754
1755 int FFMPEG::scan_option_line(const char *cp, char *tag, char *val)
1756 {
1757         while( *cp == ' ' || *cp == '\t' ) ++cp;
1758         const char *bp = cp;
1759         while( *cp && *cp != ' ' && *cp != '\t' && *cp != '=' && *cp != '\n' ) ++cp;
1760         int len = cp - bp;
1761         if( !len || len > BCSTRLEN-1 ) return 1;
1762         while( bp < cp ) *tag++ = *bp++;
1763         *tag = 0;
1764         while( *cp == ' ' || *cp == '\t' ) ++cp;
1765         if( *cp == '=' ) ++cp;
1766         while( *cp == ' ' || *cp == '\t' ) ++cp;
1767         bp = cp;
1768         while( *cp && *cp != '\n' ) ++cp;
1769         len = cp - bp;
1770         if( len > BCTEXTLEN-1 ) return 1;
1771         while( bp < cp ) *val++ = *bp++;
1772         *val = 0;
1773         return 0;
1774 }
1775
1776 int FFMPEG::can_render(const char *fformat, const char *type)
1777 {
1778         FileSystem fs;
1779         char option_path[BCTEXTLEN];
1780         FFMPEG::set_option_path(option_path, type);
1781         fs.update(option_path);
1782         int total_files = fs.total_files();
1783         for( int i=0; i<total_files; ++i ) {
1784                 const char *name = fs.get_entry(i)->get_name();
1785                 const char *ext = strrchr(name,'.');
1786                 if( !ext ) continue;
1787                 if( !strcmp(fformat, ++ext) ) return 1;
1788         }
1789         return 0;
1790 }
1791
1792 int FFMPEG::get_ff_option(const char *nm, const char *options, char *value)
1793 {
1794         for( const char *cp=options; *cp!=0; ) {
1795                 char line[BCTEXTLEN], *bp = line, *ep = bp+sizeof(line)-1;
1796                 while( bp < ep && *cp && *cp!='\n' ) *bp++ = *cp++;
1797                 if( *cp ) ++cp;
1798                 *bp = 0;
1799                 if( !line[0] || line[0] == '#' || line[0] == ';' ) continue;
1800                 char key[BCSTRLEN], val[BCTEXTLEN];
1801                 if( FFMPEG::scan_option_line(line, key, val) ) continue;
1802                 if( !strcmp(key, nm) ) {
1803                         strncpy(value, val, BCSTRLEN);
1804                         return 0;
1805                 }
1806         }
1807         return 1;
1808 }
1809
1810 void FFMPEG::scan_audio_options(Asset *asset, EDL *edl)
1811 {
1812         char cin_sample_fmt[BCSTRLEN];
1813         int cin_fmt = AV_SAMPLE_FMT_NONE;
1814         const char *options = asset->ff_audio_options;
1815         if( !get_ff_option("cin_sample_fmt", options, cin_sample_fmt) )
1816                 cin_fmt = (int)av_get_sample_fmt(cin_sample_fmt);
1817         if( cin_fmt < 0 ) {
1818                 char audio_codec[BCSTRLEN]; audio_codec[0] = 0;
1819                 AVCodec *av_codec = !FFMPEG::get_codec(audio_codec, "audio", asset->acodec) ?
1820                         avcodec_find_encoder_by_name(audio_codec) : 0;
1821                 if( av_codec && av_codec->sample_fmts )
1822                         cin_fmt = find_best_sample_fmt_of_list(av_codec->sample_fmts, AV_SAMPLE_FMT_FLT);
1823         }
1824         if( cin_fmt < 0 ) cin_fmt = AV_SAMPLE_FMT_S16;
1825         const char *name = av_get_sample_fmt_name((AVSampleFormat)cin_fmt);
1826         if( !name ) name = _("None");
1827         strcpy(asset->ff_sample_format, name);
1828
1829         char value[BCSTRLEN];
1830         if( !get_ff_option("cin_bitrate", options, value) )
1831                 asset->ff_audio_bitrate = atoi(value);
1832         if( !get_ff_option("cin_quality", options, value) )
1833                 asset->ff_audio_quality = atoi(value);
1834 }
1835
1836 void FFMPEG::load_audio_options(Asset *asset, EDL *edl)
1837 {
1838         char options_path[BCTEXTLEN];
1839         set_option_path(options_path, "audio/%s", asset->acodec);
1840         if( !load_options(options_path,
1841                         asset->ff_audio_options,
1842                         sizeof(asset->ff_audio_options)) )
1843                 scan_audio_options(asset, edl);
1844 }
1845
1846 void FFMPEG::scan_video_options(Asset *asset, EDL *edl)
1847 {
1848         char cin_pix_fmt[BCSTRLEN];
1849         int cin_fmt = AV_PIX_FMT_NONE;
1850         const char *options = asset->ff_video_options;
1851         if( !get_ff_option("cin_pix_fmt", options, cin_pix_fmt) )
1852                         cin_fmt = (int)av_get_pix_fmt(cin_pix_fmt);
1853         if( cin_fmt < 0 ) {
1854                 char video_codec[BCSTRLEN];  video_codec[0] = 0;
1855                 AVCodec *av_codec = !get_codec(video_codec, "video", asset->vcodec) ?
1856                         avcodec_find_encoder_by_name(video_codec) : 0;
1857                 if( av_codec && av_codec->pix_fmts ) {
1858                         if( 0 && edl ) { // frequently picks a bad answer
1859                                 int color_model = edl->session->color_model;
1860                                 int max_bits = BC_CModels::calculate_pixelsize(color_model) * 8;
1861                                 max_bits /= BC_CModels::components(color_model);
1862                                 cin_fmt = avcodec_find_best_pix_fmt_of_list(av_codec->pix_fmts,
1863                                         (BC_CModels::is_yuv(color_model) ?
1864                                                 (max_bits > 8 ? AV_PIX_FMT_AYUV64LE : AV_PIX_FMT_YUV444P) :
1865                                                 (max_bits > 8 ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB24)), 0, 0);
1866                         }
1867                         else
1868                                 cin_fmt = av_codec->pix_fmts[0];
1869                 }
1870         }
1871         if( cin_fmt < 0 ) cin_fmt = AV_PIX_FMT_YUV420P;
1872         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get((AVPixelFormat)cin_fmt);
1873         const char *name = desc ? desc->name : _("None");
1874         strcpy(asset->ff_pixel_format, name);
1875
1876         char value[BCSTRLEN];
1877         if( !get_ff_option("cin_bitrate", options, value) )
1878                 asset->ff_video_bitrate = atoi(value);
1879         if( !get_ff_option("cin_quality", options, value) )
1880                 asset->ff_video_quality = atoi(value);
1881 }
1882
1883 void FFMPEG::load_video_options(Asset *asset, EDL *edl)
1884 {
1885         char options_path[BCTEXTLEN];
1886         set_option_path(options_path, "video/%s", asset->vcodec);
1887         if( !load_options(options_path,
1888                         asset->ff_video_options,
1889                         sizeof(asset->ff_video_options)) )
1890                 scan_video_options(asset, edl);
1891 }
1892
1893 int FFMPEG::load_defaults(const char *path, const char *type,
1894                  char *codec, char *codec_options, int len)
1895 {
1896         char default_file[BCTEXTLEN];
1897         set_option_path(default_file, "%s/%s.dfl", path, type);
1898         FILE *fp = fopen(default_file,"r");
1899         if( !fp ) return 1;
1900         fgets(codec, BCSTRLEN, fp);
1901         char *cp = codec;
1902         while( *cp && *cp!='\n' ) ++cp;
1903         *cp = 0;
1904         while( len > 0 && fgets(codec_options, len, fp) ) {
1905                 int n = strlen(codec_options);
1906                 codec_options += n;  len -= n;
1907         }
1908         fclose(fp);
1909         set_option_path(default_file, "%s/%s", path, codec);
1910         return load_options(default_file, codec_options, len);
1911 }
1912
1913 void FFMPEG::set_asset_format(Asset *asset, EDL *edl, const char *text)
1914 {
1915         if( asset->format != FILE_FFMPEG ) return;
1916         if( text != asset->fformat )
1917                 strcpy(asset->fformat, text);
1918         if( asset->audio_data && !asset->ff_audio_options[0] ) {
1919                 if( !load_defaults("audio", text, asset->acodec,
1920                                 asset->ff_audio_options, sizeof(asset->ff_audio_options)) )
1921                         scan_audio_options(asset, edl);
1922                 else
1923                         asset->audio_data = 0;
1924         }
1925         if( asset->video_data && !asset->ff_video_options[0] ) {
1926                 if( !load_defaults("video", text, asset->vcodec,
1927                                 asset->ff_video_options, sizeof(asset->ff_video_options)) )
1928                         scan_video_options(asset, edl);
1929                 else
1930                         asset->video_data = 0;
1931         }
1932 }
1933
1934 int FFMPEG::get_encoder(const char *options,
1935                 char *format, char *codec, char *bsfilter)
1936 {
1937         FILE *fp = fopen(options,"r");
1938         if( !fp ) {
1939                 eprintf(_("options open failed %s\n"),options);
1940                 return 1;
1941         }
1942         char line[BCTEXTLEN];
1943         if( !fgets(line, sizeof(line), fp) ||
1944             scan_encoder(line, format, codec, bsfilter) )
1945                 eprintf(_("format/codec not found %s\n"), options);
1946         fclose(fp);
1947         return 0;
1948 }
1949
1950 int FFMPEG::scan_encoder(const char *line,
1951                 char *format, char *codec, char *bsfilter)
1952 {
1953         format[0] = codec[0] = bsfilter[0] = 0;
1954         if( scan_option_line(line, format, codec) ) return 1;
1955         char *cp = codec;
1956         while( *cp && *cp != '|' ) ++cp;
1957         if( !*cp ) return 0;
1958         char *bp = cp;
1959         do { *bp-- = 0; } while( bp>=codec && (*bp==' ' || *bp == '\t' ) );
1960         while( *++cp && (*cp==' ' || *cp == '\t') );
1961         bp = bsfilter;
1962         for( int i=BCTEXTLEN; --i>0 && *cp; ) *bp++ = *cp++;
1963         *bp = 0;
1964         return 0;
1965 }
1966
1967 int FFMPEG::read_options(const char *options, AVDictionary *&opts, int skip)
1968 {
1969         FILE *fp = fopen(options,"r");
1970         if( !fp ) return 1;
1971         int ret = 0;
1972         while( !ret && --skip >= 0 ) {
1973                 int ch = getc(fp);
1974                 while( ch >= 0 && ch != '\n' ) ch = getc(fp);
1975                 if( ch < 0 ) ret = 1;
1976         }
1977         if( !ret )
1978                 ret = read_options(fp, options, opts);
1979         fclose(fp);
1980         return ret;
1981 }
1982
1983 int FFMPEG::scan_options(const char *options, AVDictionary *&opts, AVStream *st)
1984 {
1985         FILE *fp = fmemopen((void *)options,strlen(options),"r");
1986         if( !fp ) return 0;
1987         int ret = read_options(fp, options, opts);
1988         fclose(fp);
1989         AVDictionaryEntry *tag = av_dict_get(opts, "id", NULL, 0);
1990         if( tag ) st->id = strtol(tag->value,0,0);
1991         return ret;
1992 }
1993
1994 int FFMPEG::read_options(FILE *fp, const char *options, AVDictionary *&opts)
1995 {
1996         int ret = 0, no = 0;
1997         char line[BCTEXTLEN];
1998         while( !ret && fgets(line, sizeof(line), fp) ) {
1999                 line[sizeof(line)-1] = 0;
2000                 if( line[0] == '#' ) continue;
2001                 if( line[0] == '\n' ) continue;
2002                 char key[BCSTRLEN], val[BCTEXTLEN];
2003                 if( scan_option_line(line, key, val) ) {
2004                         eprintf(_("err reading %s: line %d\n"), options, no);
2005                         ret = 1;
2006                 }
2007                 if( !ret ) {
2008                         if( !strcmp(key, "duration") )
2009                                 opt_duration = strtod(val, 0);
2010                         else if( !strcmp(key, "video_filter") )
2011                                 opt_video_filter = cstrdup(val);
2012                         else if( !strcmp(key, "audio_filter") )
2013                                 opt_audio_filter = cstrdup(val);
2014                         else if( !strcmp(key, "cin_hw_dev") )
2015                                 opt_hw_dev = cstrdup(val);
2016                         else if( !strcmp(key, "loglevel") )
2017                                 set_loglevel(val);
2018                         else
2019                                 av_dict_set(&opts, key, val, 0);
2020                 }
2021         }
2022         return ret;
2023 }
2024
2025 int FFMPEG::load_options(const char *options, AVDictionary *&opts)
2026 {
2027         char option_path[BCTEXTLEN];
2028         set_option_path(option_path, "%s", options);
2029         return read_options(option_path, opts);
2030 }
2031
2032 int FFMPEG::load_options(const char *path, char *bfr, int len)
2033 {
2034         *bfr = 0;
2035         FILE *fp = fopen(path, "r");
2036         if( !fp ) return 1;
2037         fgets(bfr, len, fp); // skip hdr
2038         len = fread(bfr, 1, len-1, fp);
2039         if( len < 0 ) len = 0;
2040         bfr[len] = 0;
2041         fclose(fp);
2042         return 0;
2043 }
2044
2045 void FFMPEG::set_loglevel(const char *ap)
2046 {
2047         if( !ap || !*ap ) return;
2048         const struct {
2049                 const char *name;
2050                 int level;
2051         } log_levels[] = {
2052                 { "quiet"  , AV_LOG_QUIET   },
2053                 { "panic"  , AV_LOG_PANIC   },
2054                 { "fatal"  , AV_LOG_FATAL   },
2055                 { "error"  , AV_LOG_ERROR   },
2056                 { "warning", AV_LOG_WARNING },
2057                 { "info"   , AV_LOG_INFO    },
2058                 { "verbose", AV_LOG_VERBOSE },
2059                 { "debug"  , AV_LOG_DEBUG   },
2060         };
2061         for( int i=0; i<(int)(sizeof(log_levels)/sizeof(log_levels[0])); ++i ) {
2062                 if( !strcmp(log_levels[i].name, ap) ) {
2063                         av_log_set_level(log_levels[i].level);
2064                         return;
2065                 }
2066         }
2067         av_log_set_level(atoi(ap));
2068 }
2069
2070 double FFMPEG::to_secs(int64_t time, AVRational time_base)
2071 {
2072         double base_time = time == AV_NOPTS_VALUE ? 0 :
2073                 av_rescale_q(time, time_base, AV_TIME_BASE_Q);
2074         return base_time / AV_TIME_BASE;
2075 }
2076
2077 int FFMPEG::info(char *text, int len)
2078 {
2079         if( len <= 0 ) return 0;
2080         decode_activate();
2081 #define report(s...) do { int n = snprintf(cp,len,s); cp += n;  len -= n; } while(0)
2082         char *cp = text;
2083         report("format: %s\n",fmt_ctx->iformat->name);
2084         if( ffvideo.size() > 0 )
2085                 report("\n%d video stream%s\n",ffvideo.size(), ffvideo.size()!=1 ? "s" : "");
2086         for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
2087                 FFVideoStream *vid = ffvideo[vidx];
2088                 AVStream *st = vid->st;
2089                 AVCodecID codec_id = st->codecpar->codec_id;
2090                 report(_("vid%d (%d),  id 0x%06x:\n"), vid->idx, vid->fidx, codec_id);
2091                 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2092                 report("  video%d %s", vidx+1, desc ? desc->name : " (unkn)");
2093                 report(" %dx%d %5.2f", vid->width, vid->height, vid->frame_rate);
2094                 AVPixelFormat pix_fmt = (AVPixelFormat)st->codecpar->format;
2095                 const char *pfn = av_get_pix_fmt_name(pix_fmt);
2096                 report(" pix %s\n", pfn ? pfn : "(unkn)");
2097                 double secs = to_secs(st->duration, st->time_base);
2098                 int64_t length = secs * vid->frame_rate + 0.5;
2099                 double ofs = to_secs((vid->nudge - st->start_time), st->time_base);
2100                 int64_t nudge = ofs * vid->frame_rate;
2101                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
2102                 report("    %jd%c%jd frms %0.2f secs", length,ch,nudge, secs);
2103                 int hrs = secs/3600;  secs -= hrs*3600;
2104                 int mins = secs/60;  secs -= mins*60;
2105                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
2106         }
2107         if( ffaudio.size() > 0 )
2108                 report("\n%d audio stream%s\n",ffaudio.size(), ffaudio.size()!=1 ? "s" : "");
2109         for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
2110                 FFAudioStream *aud = ffaudio[aidx];
2111                 AVStream *st = aud->st;
2112                 AVCodecID codec_id = st->codecpar->codec_id;
2113                 report(_("aud%d (%d),  id 0x%06x:\n"), aud->idx, aud->fidx, codec_id);
2114                 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2115                 int nch = aud->channels, ch0 = aud->channel0+1;
2116                 report("  audio%d-%d %s", ch0, ch0+nch-1, desc ? desc->name : " (unkn)");
2117                 AVSampleFormat sample_fmt = (AVSampleFormat)st->codecpar->format;
2118                 const char *fmt = av_get_sample_fmt_name(sample_fmt);
2119                 report(" %s %d", fmt, aud->sample_rate);
2120                 int sample_bits = av_get_bits_per_sample(codec_id);
2121                 report(" %dbits\n", sample_bits);
2122                 double secs = to_secs(st->duration, st->time_base);
2123                 int64_t length = secs * aud->sample_rate + 0.5;
2124                 double ofs = to_secs((aud->nudge - st->start_time), st->time_base);
2125                 int64_t nudge = ofs * aud->sample_rate;
2126                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
2127                 report("    %jd%c%jd smpl %0.2f secs", length,ch,nudge, secs);
2128                 int hrs = secs/3600;  secs -= hrs*3600;
2129                 int mins = secs/60;  secs -= mins*60;
2130                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
2131         }
2132         if( fmt_ctx->nb_programs > 0 )
2133                 report("\n%d program%s\n",fmt_ctx->nb_programs, fmt_ctx->nb_programs!=1 ? "s" : "");
2134         for( int i=0; i<(int)fmt_ctx->nb_programs; ++i ) {
2135                 report("program %d", i+1);
2136                 AVProgram *pgrm = fmt_ctx->programs[i];
2137                 for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
2138                         int idx = pgrm->stream_index[j];
2139                         int vidx = ffvideo.size();
2140                         while( --vidx>=0 && ffvideo[vidx]->fidx != idx );
2141                         if( vidx >= 0 ) {
2142                                 report(", vid%d", vidx);
2143                                 continue;
2144                         }
2145                         int aidx = ffaudio.size();
2146                         while( --aidx>=0 && ffaudio[aidx]->fidx != idx );
2147                         if( aidx >= 0 ) {
2148                                 report(", aud%d", aidx);
2149                                 continue;
2150                         }
2151                         report(", (%d)", pgrm->stream_index[j]);
2152                 }
2153                 report("\n");
2154         }
2155         report("\n");
2156         AVDictionaryEntry *tag = 0;
2157         while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
2158                 report("%s=%s\n", tag->key, tag->value);
2159
2160         if( !len ) --cp;
2161         *cp = 0;
2162         return cp - text;
2163 #undef report
2164 }
2165
2166
2167 int FFMPEG::init_decoder(const char *filename)
2168 {
2169         ff_lock("FFMPEG::init_decoder");
2170         av_register_all();
2171         char file_opts[BCTEXTLEN];
2172         strcpy(file_opts, filename);
2173         char *bp = strrchr(file_opts, '/');
2174         if( !bp ) bp = file_opts;
2175         char *sp = strrchr(bp, '.');
2176         if( !sp ) sp = bp + strlen(bp);
2177         FILE *fp = 0;
2178         AVInputFormat *ifmt = 0;
2179         if( sp ) {
2180                 strcpy(sp, ".opts");
2181                 fp = fopen(file_opts, "r");
2182         }
2183         if( fp ) {
2184                 read_options(fp, file_opts, opts);
2185                 fclose(fp);
2186                 AVDictionaryEntry *tag;
2187                 if( (tag=av_dict_get(opts, "format", NULL, 0)) != 0 ) {
2188                         ifmt = av_find_input_format(tag->value);
2189                 }
2190         }
2191         else
2192                 load_options("decode.opts", opts);
2193         AVDictionary *fopts = 0;
2194         av_dict_copy(&fopts, opts, 0);
2195         int ret = avformat_open_input(&fmt_ctx, filename, ifmt, &fopts);
2196         av_dict_free(&fopts);
2197         if( ret >= 0 )
2198                 ret = avformat_find_stream_info(fmt_ctx, NULL);
2199         if( !ret ) {
2200                 decoding = -1;
2201         }
2202         ff_unlock();
2203         return !ret ? 0 : 1;
2204 }
2205
2206 int FFMPEG::open_decoder()
2207 {
2208         struct stat st;
2209         if( stat(fmt_ctx->url, &st) < 0 ) {
2210                 eprintf(_("can't stat file: %s\n"), fmt_ctx->url);
2211                 return 1;
2212         }
2213
2214         int64_t file_bits = 8 * st.st_size;
2215         if( !fmt_ctx->bit_rate && opt_duration > 0 )
2216                 fmt_ctx->bit_rate = file_bits / opt_duration;
2217
2218         int estimated = 0;
2219         if( fmt_ctx->bit_rate > 0 ) {
2220                 for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
2221                         AVStream *st = fmt_ctx->streams[i];
2222                         if( st->duration != AV_NOPTS_VALUE ) continue;
2223                         if( st->time_base.num > INT64_MAX / fmt_ctx->bit_rate ) continue;
2224                         st->duration = av_rescale(file_bits, st->time_base.den,
2225                                 fmt_ctx->bit_rate * (int64_t) st->time_base.num);
2226                         estimated = 1;
2227                 }
2228         }
2229         if( estimated && !(fflags & FF_ESTM_TIMES) ) {
2230                 fflags |= FF_ESTM_TIMES;
2231                 printf("FFMPEG::open_decoder: some stream times estimated: %s\n",
2232                         fmt_ctx->url);
2233         }
2234
2235         ff_lock("FFMPEG::open_decoder");
2236         int ret = 0, bad_time = 0;
2237         for( int i=0; !ret && i<(int)fmt_ctx->nb_streams; ++i ) {
2238                 AVStream *st = fmt_ctx->streams[i];
2239                 if( st->duration == AV_NOPTS_VALUE ) bad_time = 1;
2240                 AVCodecParameters *avpar = st->codecpar;
2241                 const AVCodecDescriptor *codec_desc = avcodec_descriptor_get(avpar->codec_id);
2242                 if( !codec_desc ) continue;
2243                 switch( avpar->codec_type ) {
2244                 case AVMEDIA_TYPE_VIDEO: {
2245                         if( avpar->width < 1 ) continue;
2246                         if( avpar->height < 1 ) continue;
2247                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
2248                         if( framerate.num < 1 ) continue;
2249                         has_video = 1;
2250                         int vidx = ffvideo.size();
2251                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, i);
2252                         vstrm_index.append(ffidx(vidx, 0));
2253                         ffvideo.append(vid);
2254                         vid->width = avpar->width;
2255                         vid->height = avpar->height;
2256                         vid->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
2257                         double secs = to_secs(st->duration, st->time_base);
2258                         vid->length = secs * vid->frame_rate;
2259                         vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den;
2260                         vid->nudge = st->start_time;
2261                         vid->reading = -1;
2262                         if( opt_video_filter )
2263                                 ret = vid->create_filter(opt_video_filter, avpar);
2264                         break; }
2265                 case AVMEDIA_TYPE_AUDIO: {
2266                         if( avpar->channels < 1 ) continue;
2267                         if( avpar->sample_rate < 1 ) continue;
2268                         has_audio = 1;
2269                         int aidx = ffaudio.size();
2270                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, i);
2271                         ffaudio.append(aud);
2272                         aud->channel0 = astrm_index.size();
2273                         aud->channels = avpar->channels;
2274                         for( int ch=0; ch<aud->channels; ++ch )
2275                                 astrm_index.append(ffidx(aidx, ch));
2276                         aud->sample_rate = avpar->sample_rate;
2277                         double secs = to_secs(st->duration, st->time_base);
2278                         aud->length = secs * aud->sample_rate;
2279                         aud->init_swr(aud->channels, avpar->format, aud->sample_rate);
2280                         aud->nudge = st->start_time;
2281                         aud->reading = -1;
2282                         if( opt_audio_filter )
2283                                 ret = aud->create_filter(opt_audio_filter, avpar);
2284                         break; }
2285                 default: break;
2286                 }
2287         }
2288         if( bad_time && !(fflags & FF_BAD_TIMES) ) {
2289                 fflags |= FF_BAD_TIMES;
2290                 printf("FFMPEG::open_decoder: some stream have bad times: %s\n",
2291                         fmt_ctx->url);
2292         }
2293         ff_unlock();
2294         return ret < 0 ? -1 : 0;
2295 }
2296
2297
2298 int FFMPEG::init_encoder(const char *filename)
2299 {
2300 // try access first for named pipes
2301         int ret = access(filename, W_OK);
2302         if( ret ) {
2303                 int fd = ::open(filename,O_WRONLY);
2304                 if( fd < 0 ) fd = open(filename,O_WRONLY+O_CREAT,0666);
2305                 if( fd >= 0 ) { close(fd);  ret = 0; }
2306         }
2307         if( ret ) {
2308                 eprintf(_("bad file path: %s\n"), filename);
2309                 return 1;
2310         }
2311         ret = get_file_format();
2312         if( ret > 0 ) {
2313                 eprintf(_("bad file format: %s\n"), filename);
2314                 return 1;
2315         }
2316         if( ret < 0 ) {
2317                 eprintf(_("mismatch audio/video file format: %s\n"), filename);
2318                 return 1;
2319         }
2320         ff_lock("FFMPEG::init_encoder");
2321         av_register_all();
2322         char format[BCSTRLEN];
2323         if( get_format(format, "format", file_format) )
2324                 strcpy(format, file_format);
2325         avformat_alloc_output_context2(&fmt_ctx, 0, format, filename);
2326         if( !fmt_ctx ) {
2327                 eprintf(_("failed: %s\n"), filename);
2328                 ret = 1;
2329         }
2330         if( !ret ) {
2331                 encoding = -1;
2332                 load_options("encode.opts", opts);
2333         }
2334         ff_unlock();
2335         return ret;
2336 }
2337
2338 int FFMPEG::open_encoder(const char *type, const char *spec)
2339 {
2340
2341         Asset *asset = file_base->asset;
2342         char *filename = asset->path;
2343         AVDictionary *sopts = 0;
2344         av_dict_copy(&sopts, opts, 0);
2345         char option_path[BCTEXTLEN];
2346         set_option_path(option_path, "%s/%s.opts", type, type);
2347         read_options(option_path, sopts);
2348         get_option_path(option_path, type, spec);
2349         char format_name[BCSTRLEN], codec_name[BCTEXTLEN], bsfilter[BCTEXTLEN];
2350         if( get_encoder(option_path, format_name, codec_name, bsfilter) ) {
2351                 eprintf(_("get_encoder failed %s:%s\n"), option_path, filename);
2352                 return 1;
2353         }
2354
2355 #ifdef HAVE_DV
2356         if( !strcmp(codec_name, CODEC_TAG_DVSD) ) strcpy(codec_name, "dv");
2357 #endif
2358         else if( !strcmp(codec_name, CODEC_TAG_MJPEG) ) strcpy(codec_name, "mjpeg");
2359         else if( !strcmp(codec_name, CODEC_TAG_JPEG) ) strcpy(codec_name, "jpeg");
2360
2361         int ret = 0;
2362         ff_lock("FFMPEG::open_encoder");
2363         FFStream *fst = 0;
2364         AVStream *st = 0;
2365         AVCodecContext *ctx = 0;
2366
2367         const AVCodecDescriptor *codec_desc = 0;
2368         AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
2369         if( !codec ) {
2370                 eprintf(_("cant find codec %s:%s\n"), codec_name, filename);
2371                 ret = 1;
2372         }
2373         if( !ret ) {
2374                 codec_desc = avcodec_descriptor_get(codec->id);
2375                 if( !codec_desc ) {
2376                         eprintf(_("unknown codec %s:%s\n"), codec_name, filename);
2377                         ret = 1;
2378                 }
2379         }
2380         if( !ret ) {
2381                 st = avformat_new_stream(fmt_ctx, 0);
2382                 if( !st ) {
2383                         eprintf(_("cant create stream %s:%s\n"), codec_name, filename);
2384                         ret = 1;
2385                 }
2386         }
2387         if( !ret ) {
2388                 switch( codec_desc->type ) {
2389                 case AVMEDIA_TYPE_AUDIO: {
2390                         if( has_audio ) {
2391                                 eprintf(_("duplicate audio %s:%s\n"), codec_name, filename);
2392                                 ret = 1;
2393                                 break;
2394                         }
2395                         if( scan_options(asset->ff_audio_options, sopts, st) ) {
2396                                 eprintf(_("bad audio options %s:%s\n"), codec_name, filename);
2397                                 ret = 1;
2398                                 break;
2399                         }
2400                         has_audio = 1;
2401                         ctx = avcodec_alloc_context3(codec);
2402                         if( asset->ff_audio_bitrate > 0 ) {
2403                                 ctx->bit_rate = asset->ff_audio_bitrate;
2404                                 char arg[BCSTRLEN];
2405                                 sprintf(arg, "%d", asset->ff_audio_bitrate);
2406                                 av_dict_set(&sopts, "b", arg, 0);
2407                         }
2408                         else if( asset->ff_audio_quality >= 0 ) {
2409                                 ctx->global_quality = asset->ff_audio_quality * FF_QP2LAMBDA;
2410                                 ctx->qmin    = ctx->qmax =  asset->ff_audio_quality;
2411                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
2412                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
2413                                 ctx->flags |= AV_CODEC_FLAG_QSCALE;
2414                                 char arg[BCSTRLEN];
2415                                 av_dict_set(&sopts, "flags", "+qscale", 0);
2416                                 sprintf(arg, "%d", asset->ff_audio_quality);
2417                                 av_dict_set(&sopts, "qscale", arg, 0);
2418                                 sprintf(arg, "%d", ctx->global_quality);
2419                                 av_dict_set(&sopts, "global_quality", arg, 0);
2420                         }
2421                         int aidx = ffaudio.size();
2422                         int fidx = aidx + ffvideo.size();
2423                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, fidx);
2424                         aud->avctx = ctx;  ffaudio.append(aud);  fst = aud;
2425                         aud->sample_rate = asset->sample_rate;
2426                         ctx->channels = aud->channels = asset->channels;
2427                         for( int ch=0; ch<aud->channels; ++ch )
2428                                 astrm_index.append(ffidx(aidx, ch));
2429                         ctx->channel_layout =  av_get_default_channel_layout(ctx->channels);
2430                         ctx->sample_rate = check_sample_rate(codec, asset->sample_rate);
2431                         if( !ctx->sample_rate ) {
2432                                 eprintf(_("check_sample_rate failed %s\n"), filename);
2433                                 ret = 1;
2434                                 break;
2435                         }
2436                         ctx->time_base = st->time_base = (AVRational){1, aud->sample_rate};
2437                         AVSampleFormat sample_fmt = av_get_sample_fmt(asset->ff_sample_format);
2438                         if( sample_fmt == AV_SAMPLE_FMT_NONE )
2439                                 sample_fmt = codec->sample_fmts ? codec->sample_fmts[0] : AV_SAMPLE_FMT_S16;
2440                         ctx->sample_fmt = sample_fmt;
2441                         uint64_t layout = av_get_default_channel_layout(ctx->channels);
2442                         aud->resample_context = swr_alloc_set_opts(NULL,
2443                                 layout, ctx->sample_fmt, aud->sample_rate,
2444                                 layout, AV_SAMPLE_FMT_FLT, ctx->sample_rate,
2445                                 0, NULL);
2446                         swr_init(aud->resample_context);
2447                         aud->writing = -1;
2448                         break; }
2449                 case AVMEDIA_TYPE_VIDEO: {
2450                         if( has_video ) {
2451                                 eprintf(_("duplicate video %s:%s\n"), codec_name, filename);
2452                                 ret = 1;
2453                                 break;
2454                         }
2455                         if( scan_options(asset->ff_video_options, sopts, st) ) {
2456                                 eprintf(_("bad video options %s:%s\n"), codec_name, filename);
2457                                 ret = 1;
2458                                 break;
2459                         }
2460                         has_video = 1;
2461                         ctx = avcodec_alloc_context3(codec);
2462                         if( asset->ff_video_bitrate > 0 ) {
2463                                 ctx->bit_rate = asset->ff_video_bitrate;
2464                                 char arg[BCSTRLEN];
2465                                 sprintf(arg, "%d", asset->ff_video_bitrate);
2466                                 av_dict_set(&sopts, "b", arg, 0);
2467                         }
2468                         else if( asset->ff_video_quality >= 0 ) {
2469                                 ctx->global_quality = asset->ff_video_quality * FF_QP2LAMBDA;
2470                                 ctx->qmin    = ctx->qmax =  asset->ff_video_quality;
2471                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
2472                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
2473                                 ctx->flags |= AV_CODEC_FLAG_QSCALE;
2474                                 char arg[BCSTRLEN];
2475                                 av_dict_set(&sopts, "flags", "+qscale", 0);
2476                                 sprintf(arg, "%d", asset->ff_video_quality);
2477                                 av_dict_set(&sopts, "qscale", arg, 0);
2478                                 sprintf(arg, "%d", ctx->global_quality);
2479                                 av_dict_set(&sopts, "global_quality", arg, 0);
2480                         }
2481                         int vidx = ffvideo.size();
2482                         int fidx = vidx + ffaudio.size();
2483                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, fidx);
2484                         vstrm_index.append(ffidx(vidx, 0));
2485                         vid->avctx = ctx;  ffvideo.append(vid);  fst = vid;
2486                         vid->width = asset->width;
2487                         vid->height = asset->height;
2488                         vid->frame_rate = asset->frame_rate;
2489
2490                         AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
2491                         if( opt_hw_dev != 0 ) {
2492                                 AVHWDeviceType hw_type = vid->encode_hw_activate(opt_hw_dev);
2493                                 switch( hw_type ) {
2494                                 case AV_HWDEVICE_TYPE_VAAPI:
2495                                         pix_fmt = AV_PIX_FMT_VAAPI;
2496                                         break;
2497                                 case AV_HWDEVICE_TYPE_NONE:
2498                                 default:
2499                                         pix_fmt = av_get_pix_fmt(asset->ff_pixel_format);
2500                                         break;
2501                                 }
2502                         }
2503                         if( pix_fmt == AV_PIX_FMT_NONE )
2504                                 pix_fmt = codec->pix_fmts ? codec->pix_fmts[0] : AV_PIX_FMT_YUV420P;
2505                         ctx->pix_fmt = pix_fmt;
2506
2507                         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
2508                         int mask_w = (1<<desc->log2_chroma_w)-1;
2509                         ctx->width = (vid->width+mask_w) & ~mask_w;
2510                         int mask_h = (1<<desc->log2_chroma_h)-1;
2511                         ctx->height = (vid->height+mask_h) & ~mask_h;
2512                         ctx->sample_aspect_ratio = to_sample_aspect_ratio(asset);
2513                         AVRational frame_rate = check_frame_rate(codec, vid->frame_rate);
2514                         if( !frame_rate.num || !frame_rate.den ) {
2515                                 eprintf(_("check_frame_rate failed %s\n"), filename);
2516                                 ret = 1;
2517                                 break;
2518                         }
2519                         av_reduce(&frame_rate.num, &frame_rate.den,
2520                                 frame_rate.num, frame_rate.den, INT_MAX);
2521                         ctx->framerate = (AVRational) { frame_rate.num, frame_rate.den };
2522                         ctx->time_base = (AVRational) { frame_rate.den, frame_rate.num };
2523                         st->avg_frame_rate = frame_rate;
2524                         st->time_base = ctx->time_base;
2525                         vid->writing = -1;
2526                         vid->interlaced = asset->interlace_mode == ILACE_MODE_TOP_FIRST ||
2527                                 asset->interlace_mode == ILACE_MODE_BOTTOM_FIRST ? 1 : 0;
2528                         vid->top_field_first = asset->interlace_mode == ILACE_MODE_TOP_FIRST ? 1 : 0;
2529                         break; }
2530                 default:
2531                         eprintf(_("not audio/video, %s:%s\n"), codec_name, filename);
2532                         ret = 1;
2533                 }
2534
2535                 if( ctx ) {
2536                         AVDictionaryEntry *tag;
2537                         if( (tag=av_dict_get(sopts, "cin_stats_filename", NULL, 0)) != 0 ) {
2538                                 char suffix[BCSTRLEN];  sprintf(suffix,"-%d.log",fst->fidx);
2539                                 fst->stats_filename = cstrcat(2, tag->value, suffix);
2540                         }
2541                         if( (tag=av_dict_get(sopts, "flags", NULL, 0)) != 0 ) {
2542                                 int pass = fst->pass;
2543                                 char *cp = tag->value;
2544                                 while( *cp ) {
2545                                         int ch = *cp++, pfx = ch=='-' ? -1 : ch=='+' ? 1 : 0;
2546                                         if( !isalnum(!pfx ? ch : (ch=*cp++)) ) continue;
2547                                         char id[BCSTRLEN], *bp = id, *ep = bp+sizeof(id)-1;
2548                                         for( *bp++=ch; isalnum(ch=*cp); ++cp )
2549                                                 if( bp < ep ) *bp++ = ch;
2550                                         *bp = 0;
2551                                         if( !strcmp(id, "pass1") ) {
2552                                                 pass = pfx<0 ? (pass&~1) : pfx>0 ? (pass|1) : 1;
2553                                         }
2554                                         else if( !strcmp(id, "pass2") ) {
2555                                                 pass = pfx<0 ? (pass&~2) : pfx>0 ? (pass|2) : 2;
2556                                         }
2557                                 }
2558                                 if( (fst->pass=pass) ) {
2559                                         if( pass & 1 ) ctx->flags |= AV_CODEC_FLAG_PASS1;
2560                                         if( pass & 2 ) ctx->flags |= AV_CODEC_FLAG_PASS2;
2561                                 }
2562                         }
2563                 }
2564         }
2565         if( !ret ) {
2566                 if( fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER )
2567                         ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
2568                 if( fst->stats_filename && (ret=fst->init_stats_file()) )
2569                         eprintf(_("error: stats file = %s\n"), fst->stats_filename);
2570         }
2571         if( !ret ) {
2572                 av_dict_set(&sopts, "cin_bitrate", 0, 0);
2573                 av_dict_set(&sopts, "cin_quality", 0, 0);
2574
2575                 if( !av_dict_get(sopts, "threads", NULL, 0) )
2576                         ctx->thread_count = ff_cpus();
2577                 ret = avcodec_open2(ctx, codec, &sopts);
2578                 if( ret >= 0 ) {
2579                         ret = avcodec_parameters_from_context(st->codecpar, ctx);
2580                         if( ret < 0 )
2581                                 fprintf(stderr, "Could not copy the stream parameters\n");
2582                 }
2583                 if( ret >= 0 ) {
2584 _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
2585                         ret = avcodec_copy_context(st->codec, ctx);
2586 _Pragma("GCC diagnostic warning \"-Wdeprecated-declarations\"")
2587                         if( ret < 0 )
2588                                 fprintf(stderr, "Could not copy the stream context\n");
2589                 }
2590                 if( ret < 0 ) {
2591                         ff_err(ret,"FFMPEG::open_encoder");
2592                         eprintf(_("open failed %s:%s\n"), codec_name, filename);
2593                         ret = 1;
2594                 }
2595                 else
2596                         ret = 0;
2597         }
2598         if( !ret && fst && bsfilter[0] ) {
2599                 ret = av_bsf_list_parse_str(bsfilter, &fst->bsfc);
2600                 if( ret < 0 ) {
2601                         ff_err(ret,"FFMPEG::open_encoder");
2602                         eprintf(_("bitstream filter failed %s:\n%s\n"), filename, bsfilter);
2603                         ret = 1;
2604                 }
2605                 else
2606                         ret = 0;
2607         }
2608
2609         if( !ret )
2610                 start_muxer();
2611
2612         ff_unlock();
2613         av_dict_free(&sopts);
2614         return ret;
2615 }
2616
2617 int FFMPEG::close_encoder()
2618 {
2619         stop_muxer();
2620         if( encoding > 0 ) {
2621                 av_write_trailer(fmt_ctx);
2622                 if( !(fmt_ctx->flags & AVFMT_NOFILE) )
2623                         avio_closep(&fmt_ctx->pb);
2624         }
2625         encoding = 0;
2626         return 0;
2627 }
2628
2629 int FFMPEG::decode_activate()
2630 {
2631         if( decoding < 0 ) {
2632                 decoding = 0;
2633                 for( int vidx=0; vidx<ffvideo.size(); ++vidx )
2634                         ffvideo[vidx]->nudge = AV_NOPTS_VALUE;
2635                 for( int aidx=0; aidx<ffaudio.size(); ++aidx )
2636                         ffaudio[aidx]->nudge = AV_NOPTS_VALUE;
2637                 // set nudges for each program stream set
2638                 const int64_t min_nudge = INT64_MIN+1;
2639                 int npgrms = fmt_ctx->nb_programs;
2640                 for( int i=0; i<npgrms; ++i ) {
2641                         AVProgram *pgrm = fmt_ctx->programs[i];
2642                         // first start time video stream
2643                         int64_t vstart_time = min_nudge, astart_time = min_nudge;
2644                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
2645                                 int fidx = pgrm->stream_index[j];
2646                                 AVStream *st = fmt_ctx->streams[fidx];
2647                                 AVCodecParameters *avpar = st->codecpar;
2648                                 if( avpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
2649                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
2650                                         if( vstart_time < st->start_time )
2651                                                 vstart_time = st->start_time;
2652                                         continue;
2653                                 }
2654                                 if( avpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
2655                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
2656                                         if( astart_time < st->start_time )
2657                                                 astart_time = st->start_time;
2658                                         continue;
2659                                 }
2660                         }
2661                         //since frame rate is much more grainy than sample rate, it is better to
2662                         // align using video, so that total absolute error is minimized.
2663                         int64_t nudge = vstart_time > min_nudge ? vstart_time :
2664                                 astart_time > min_nudge ? astart_time : AV_NOPTS_VALUE;
2665                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
2666                                 int fidx = pgrm->stream_index[j];
2667                                 AVStream *st = fmt_ctx->streams[fidx];
2668                                 AVCodecParameters *avpar = st->codecpar;
2669                                 if( avpar->codec_type == AVMEDIA_TYPE_VIDEO ) {
2670                                         for( int k=0; k<ffvideo.size(); ++k ) {
2671                                                 if( ffvideo[k]->fidx != fidx ) continue;
2672                                                 ffvideo[k]->nudge = nudge;
2673                                         }
2674                                         continue;
2675                                 }
2676                                 if( avpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
2677                                         for( int k=0; k<ffaudio.size(); ++k ) {
2678                                                 if( ffaudio[k]->fidx != fidx ) continue;
2679                                                 ffaudio[k]->nudge = nudge;
2680                                         }
2681                                         continue;
2682                                 }
2683                         }
2684                 }
2685                 // set nudges for any streams not yet set
2686                 int64_t vstart_time = min_nudge, astart_time = min_nudge;
2687                 int nstreams = fmt_ctx->nb_streams;
2688                 for( int i=0; i<nstreams; ++i ) {
2689                         AVStream *st = fmt_ctx->streams[i];
2690                         AVCodecParameters *avpar = st->codecpar;
2691                         switch( avpar->codec_type ) {
2692                         case AVMEDIA_TYPE_VIDEO: {
2693                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
2694                                 int vidx = ffvideo.size();
2695                                 while( --vidx >= 0 && ffvideo[vidx]->fidx != i );
2696                                 if( vidx < 0 ) continue;
2697                                 if( ffvideo[vidx]->nudge != AV_NOPTS_VALUE ) continue;
2698                                 if( vstart_time < st->start_time )
2699                                         vstart_time = st->start_time;
2700                                 break; }
2701                         case AVMEDIA_TYPE_AUDIO: {
2702                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
2703                                 int aidx = ffaudio.size();
2704                                 while( --aidx >= 0 && ffaudio[aidx]->fidx != i );
2705                                 if( aidx < 0 ) continue;
2706                                 if( ffaudio[aidx]->frame_sz < avpar->frame_size )
2707                                         ffaudio[aidx]->frame_sz = avpar->frame_size;
2708                                 if( ffaudio[aidx]->nudge != AV_NOPTS_VALUE ) continue;
2709                                 if( astart_time < st->start_time )
2710                                         astart_time = st->start_time;
2711                                 break; }
2712                         default: break;
2713                         }
2714                 }
2715                 int64_t nudge = vstart_time > min_nudge ? vstart_time :
2716                         astart_time > min_nudge ? astart_time : 0;
2717                 for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
2718                         if( ffvideo[vidx]->nudge == AV_NOPTS_VALUE )
2719                                 ffvideo[vidx]->nudge = nudge;
2720                 }
2721                 for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
2722                         if( ffaudio[aidx]->nudge == AV_NOPTS_VALUE )
2723                                 ffaudio[aidx]->nudge = nudge;
2724                 }
2725                 decoding = 1;
2726         }
2727         return decoding;
2728 }
2729
2730 int FFMPEG::encode_activate()
2731 {
2732         int ret = 0;
2733         if( encoding < 0 ) {
2734                 encoding = 0;
2735                 if( !(fmt_ctx->flags & AVFMT_NOFILE) &&
2736                     (ret=avio_open(&fmt_ctx->pb, fmt_ctx->url, AVIO_FLAG_WRITE)) < 0 ) {
2737                         ff_err(ret, "FFMPEG::encode_activate: err opening : %s\n",
2738                                 fmt_ctx->url);
2739                         return -1;
2740                 }
2741
2742                 int prog_id = 1;
2743                 AVProgram *prog = av_new_program(fmt_ctx, prog_id);
2744                 for( int i=0; i< ffvideo.size(); ++i )
2745                         av_program_add_stream_index(fmt_ctx, prog_id, ffvideo[i]->fidx);
2746                 for( int i=0; i< ffaudio.size(); ++i )
2747                         av_program_add_stream_index(fmt_ctx, prog_id, ffaudio[i]->fidx);
2748                 int pi = fmt_ctx->nb_programs;
2749                 while(  --pi >= 0 && fmt_ctx->programs[pi]->id != prog_id );
2750                 AVDictionary **meta = &prog->metadata;
2751                 av_dict_set(meta, "service_provider", "cin5", 0);
2752                 const char *path = fmt_ctx->url, *bp = strrchr(path,'/');
2753                 if( bp ) path = bp + 1;
2754                 av_dict_set(meta, "title", path, 0);
2755
2756                 if( ffaudio.size() ) {
2757                         const char *ep = getenv("CIN_AUDIO_LANG"), *lp = 0;
2758                         if( !ep && (lp=getenv("LANG")) ) { // some are guesses
2759                                 static struct { const char lc[3], lng[4]; } lcode[] = {
2760                                         { "en", "eng" }, { "de", "ger" }, { "es", "spa" },
2761                                         { "eu", "bas" }, { "fr", "fre" }, { "el", "gre" },
2762                                         { "hi", "hin" }, { "it", "ita" }, { "ja", "jap" },
2763                                         { "ko", "kor" }, { "du", "dut" }, { "pl", "pol" },
2764                                         { "pt", "por" }, { "ru", "rus" }, { "sl", "slv" },
2765                                         { "uk", "ukr" }, { "vi", "vie" }, { "zh", "chi" },
2766                                 };
2767                                 for( int i=sizeof(lcode)/sizeof(lcode[0]); --i>=0 && !ep; )
2768                                         if( !strncmp(lcode[i].lc,lp,2) ) ep = lcode[i].lng;
2769                         }
2770                         if( !ep ) ep = "und";
2771                         char lang[5];
2772                         strncpy(lang,ep,3);  lang[3] = 0;
2773                         AVStream *st = ffaudio[0]->st;
2774                         av_dict_set(&st->metadata,"language",lang,0);
2775                 }
2776
2777                 AVDictionary *fopts = 0;
2778                 char option_path[BCTEXTLEN];
2779                 set_option_path(option_path, "format/%s", file_format);
2780                 read_options(option_path, fopts, 1);
2781                 ret = avformat_write_header(fmt_ctx, &fopts);
2782                 if( ret < 0 ) {
2783                         ff_err(ret, "FFMPEG::encode_activate: write header failed %s\n",
2784                                 fmt_ctx->url);
2785                         return -1;
2786                 }
2787                 av_dict_free(&fopts);
2788                 encoding = 1;
2789         }
2790         return encoding;
2791 }
2792
2793
2794 int FFMPEG::audio_seek(int stream, int64_t pos)
2795 {
2796         int aidx = astrm_index[stream].st_idx;
2797         FFAudioStream *aud = ffaudio[aidx];
2798         aud->audio_seek(pos);
2799         return 0;
2800 }
2801
2802 int FFMPEG::video_seek(int stream, int64_t pos)
2803 {
2804         int vidx = vstrm_index[stream].st_idx;
2805         FFVideoStream *vid = ffvideo[vidx];
2806         vid->video_seek(pos);
2807         return 0;
2808 }
2809
2810
2811 int FFMPEG::decode(int chn, int64_t pos, double *samples, int len)
2812 {
2813         if( !has_audio || chn >= astrm_index.size() ) return -1;
2814         int aidx = astrm_index[chn].st_idx;
2815         FFAudioStream *aud = ffaudio[aidx];
2816         if( aud->load(pos, len) < len ) return -1;
2817         int ch = astrm_index[chn].st_ch;
2818         int ret = aud->read(samples,len,ch);
2819         return ret;
2820 }
2821
2822 int FFMPEG::decode(int layer, int64_t pos, VFrame *vframe)
2823 {
2824         if( !has_video || layer >= vstrm_index.size() ) return -1;
2825         int vidx = vstrm_index[layer].st_idx;
2826         FFVideoStream *vid = ffvideo[vidx];
2827         return vid->load(vframe, pos);
2828 }
2829
2830
2831 int FFMPEG::encode(int stream, double **samples, int len)
2832 {
2833         FFAudioStream *aud = ffaudio[stream];
2834         return aud->encode(samples, len);
2835 }
2836
2837
2838 int FFMPEG::encode(int stream, VFrame *frame)
2839 {
2840         FFVideoStream *vid = ffvideo[stream];
2841         return vid->encode(frame);
2842 }
2843
2844 void FFMPEG::start_muxer()
2845 {
2846         if( !running() ) {
2847                 done = 0;
2848                 start();
2849         }
2850 }
2851
2852 void FFMPEG::stop_muxer()
2853 {
2854         if( running() ) {
2855                 done = 1;
2856                 mux_lock->unlock();
2857         }
2858         join();
2859 }
2860
2861 void FFMPEG::flow_off()
2862 {
2863         if( !flow ) return;
2864         flow_lock->lock("FFMPEG::flow_off");
2865         flow = 0;
2866 }
2867
2868 void FFMPEG::flow_on()
2869 {
2870         if( flow ) return;
2871         flow = 1;
2872         flow_lock->unlock();
2873 }
2874
2875 void FFMPEG::flow_ctl()
2876 {
2877         while( !flow ) {
2878                 flow_lock->lock("FFMPEG::flow_ctl");
2879                 flow_lock->unlock();
2880         }
2881 }
2882
2883 int FFMPEG::mux_audio(FFrame *frm)
2884 {
2885         FFStream *fst = frm->fst;
2886         AVCodecContext *ctx = fst->avctx;
2887         AVFrame *frame = *frm;
2888         AVRational tick_rate = {1, ctx->sample_rate};
2889         frame->pts = av_rescale_q(frm->position, tick_rate, ctx->time_base);
2890         int ret = fst->encode_frame(frame);
2891         if( ret < 0 )
2892                 ff_err(ret, "FFMPEG::mux_audio");
2893         return ret >= 0 ? 0 : 1;
2894 }
2895
2896 int FFMPEG::mux_video(FFrame *frm)
2897 {
2898         FFStream *fst = frm->fst;
2899         AVFrame *frame = *frm;
2900         frame->pts = frm->position;
2901         int ret = fst->encode_frame(frame);
2902         if( ret < 0 )
2903                 ff_err(ret, "FFMPEG::mux_video");
2904         return ret >= 0 ? 0 : 1;
2905 }
2906
2907 void FFMPEG::mux()
2908 {
2909         for(;;) {
2910                 double atm = -1, vtm = -1;
2911                 FFrame *afrm = 0, *vfrm = 0;
2912                 int demand = 0;
2913                 for( int i=0; i<ffaudio.size(); ++i ) {  // earliest audio
2914                         FFStream *fst = ffaudio[i];
2915                         if( fst->frm_count < 3 ) { demand = 1; flow_on(); }
2916                         FFrame *frm = fst->frms.first;
2917                         if( !frm ) { if( !done ) return; continue; }
2918                         double tm = to_secs(frm->position, fst->avctx->time_base);
2919                         if( atm < 0 || tm < atm ) { atm = tm;  afrm = frm; }
2920                 }
2921                 for( int i=0; i<ffvideo.size(); ++i ) {  // earliest video
2922                         FFStream *fst = ffvideo[i];
2923                         if( fst->frm_count < 2 ) { demand = 1; flow_on(); }
2924                         FFrame *frm = fst->frms.first;
2925                         if( !frm ) { if( !done ) return; continue; }
2926                         double tm = to_secs(frm->position, fst->avctx->time_base);
2927                         if( vtm < 0 || tm < vtm ) { vtm = tm;  vfrm = frm; }
2928                 }
2929                 if( !demand ) flow_off();
2930                 if( !afrm && !vfrm ) break;
2931                 int v = !afrm ? -1 : !vfrm ? 1 : av_compare_ts(
2932                         vfrm->position, vfrm->fst->avctx->time_base,
2933                         afrm->position, afrm->fst->avctx->time_base);
2934                 FFrame *frm = v <= 0 ? vfrm : afrm;
2935                 if( frm == afrm ) mux_audio(frm);
2936                 if( frm == vfrm ) mux_video(frm);
2937                 frm->dequeue();
2938                 delete frm;
2939         }
2940 }
2941
2942 void FFMPEG::run()
2943 {
2944         while( !done ) {
2945                 mux_lock->lock("FFMPEG::run");
2946                 if( !done ) mux();
2947         }
2948         for( int i=0; i<ffaudio.size(); ++i )
2949                 ffaudio[i]->drain();
2950         for( int i=0; i<ffvideo.size(); ++i )
2951                 ffvideo[i]->drain();
2952         mux();
2953         for( int i=0; i<ffaudio.size(); ++i )
2954                 ffaudio[i]->flush();
2955         for( int i=0; i<ffvideo.size(); ++i )
2956                 ffvideo[i]->flush();
2957 }
2958
2959
2960 int FFMPEG::ff_total_audio_channels()
2961 {
2962         return astrm_index.size();
2963 }
2964
2965 int FFMPEG::ff_total_astreams()
2966 {
2967         return ffaudio.size();
2968 }
2969
2970 int FFMPEG::ff_audio_channels(int stream)
2971 {
2972         return ffaudio[stream]->channels;
2973 }
2974
2975 int FFMPEG::ff_sample_rate(int stream)
2976 {
2977         return ffaudio[stream]->sample_rate;
2978 }
2979
2980 const char* FFMPEG::ff_audio_format(int stream)
2981 {
2982         AVStream *st = ffaudio[stream]->st;
2983         AVCodecID id = st->codecpar->codec_id;
2984         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
2985         return desc ? desc->name : _("Unknown");
2986 }
2987
2988 int FFMPEG::ff_audio_pid(int stream)
2989 {
2990         return ffaudio[stream]->st->id;
2991 }
2992
2993 int64_t FFMPEG::ff_audio_samples(int stream)
2994 {
2995         return ffaudio[stream]->length;
2996 }
2997
2998 // find audio astream/channels with this program,
2999 //   or all program audio channels (astream=-1)
3000 int FFMPEG::ff_audio_for_video(int vstream, int astream, int64_t &channel_mask)
3001 {
3002         channel_mask = 0;
3003         int pidx = -1;
3004         int vidx = ffvideo[vstream]->fidx;
3005         // find first program with this video stream
3006         for( int i=0; pidx<0 && i<(int)fmt_ctx->nb_programs; ++i ) {
3007                 AVProgram *pgrm = fmt_ctx->programs[i];
3008                 for( int j=0;  pidx<0 && j<(int)pgrm->nb_stream_indexes; ++j ) {
3009                         int st_idx = pgrm->stream_index[j];
3010                         AVStream *st = fmt_ctx->streams[st_idx];
3011                         if( st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO ) continue;
3012                         if( st_idx == vidx ) pidx = i;
3013                 }
3014         }
3015         if( pidx < 0 ) return -1;
3016         int ret = -1;
3017         int64_t channels = 0;
3018         AVProgram *pgrm = fmt_ctx->programs[pidx];
3019         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
3020                 int aidx = pgrm->stream_index[j];
3021                 AVStream *st = fmt_ctx->streams[aidx];
3022                 if( st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
3023                 if( astream > 0 ) { --astream;  continue; }
3024                 int astrm = -1;
3025                 for( int i=0; astrm<0 && i<ffaudio.size(); ++i )
3026                         if( ffaudio[i]->fidx == aidx ) astrm = i;
3027                 if( astrm >= 0 ) {
3028                         if( ret < 0 ) ret = astrm;
3029                         int64_t mask = (1 << ffaudio[astrm]->channels) - 1;
3030                         channels |= mask << ffaudio[astrm]->channel0;
3031                 }
3032                 if( !astream ) break;
3033         }
3034         channel_mask = channels;
3035         return ret;
3036 }
3037
3038
3039 int FFMPEG::ff_total_video_layers()
3040 {
3041         return vstrm_index.size();
3042 }
3043
3044 int FFMPEG::ff_total_vstreams()
3045 {
3046         return ffvideo.size();
3047 }
3048
3049 int FFMPEG::ff_video_width(int stream)
3050 {
3051         return ffvideo[stream]->width;
3052 }
3053
3054 int FFMPEG::ff_video_height(int stream)
3055 {
3056         return ffvideo[stream]->height;
3057 }
3058
3059 int FFMPEG::ff_set_video_width(int stream, int width)
3060 {
3061         int w = ffvideo[stream]->width;
3062         ffvideo[stream]->width = width;
3063         return w;
3064 }
3065
3066 int FFMPEG::ff_set_video_height(int stream, int height)
3067 {
3068         int h = ffvideo[stream]->height;
3069         ffvideo[stream]->height = height;
3070         return h;
3071 }
3072
3073 int FFMPEG::ff_coded_width(int stream)
3074 {
3075         return ffvideo[stream]->avctx->coded_width;
3076 }
3077
3078 int FFMPEG::ff_coded_height(int stream)
3079 {
3080         return ffvideo[stream]->avctx->coded_height;
3081 }
3082
3083 float FFMPEG::ff_aspect_ratio(int stream)
3084 {
3085         return ffvideo[stream]->aspect_ratio;
3086 }
3087
3088 const char* FFMPEG::ff_video_format(int stream)
3089 {
3090         AVStream *st = ffvideo[stream]->st;
3091         AVCodecID id = st->codecpar->codec_id;
3092         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
3093         return desc ? desc->name : _("Unknown");
3094 }
3095
3096 double FFMPEG::ff_frame_rate(int stream)
3097 {
3098         return ffvideo[stream]->frame_rate;
3099 }
3100
3101 int64_t FFMPEG::ff_video_frames(int stream)
3102 {
3103         return ffvideo[stream]->length;
3104 }
3105
3106 int FFMPEG::ff_video_pid(int stream)
3107 {
3108         return ffvideo[stream]->st->id;
3109 }
3110
3111 int FFMPEG::ff_video_mpeg_color_range(int stream)
3112 {
3113         return ffvideo[stream]->st->codecpar->color_range == AVCOL_RANGE_MPEG ? 1 : 0;
3114 }
3115
3116 int FFMPEG::ff_cpus()
3117 {
3118         return file_base->file->cpus;
3119 }
3120
3121 const char *FFMPEG::ff_hw_dev()
3122 {
3123         return &file_base->file->preferences->use_hw_dev[0];
3124 }
3125
3126 int FFVideoStream::create_filter(const char *filter_spec, AVCodecParameters *avpar)
3127 {
3128         avfilter_register_all();
3129         const char *sp = filter_spec;
3130         char filter_name[BCSTRLEN], *np = filter_name;
3131         int i = sizeof(filter_name);
3132         while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
3133         *np = 0;
3134         const AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
3135         if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_VIDEO ) {
3136                 ff_err(AVERROR(EINVAL), "FFVideoStream::create_filter: %s\n", filter_spec);
3137                 return -1;
3138         }
3139         filter_graph = avfilter_graph_alloc();
3140         const AVFilter *buffersrc = avfilter_get_by_name("buffer");
3141         const AVFilter *buffersink = avfilter_get_by_name("buffersink");
3142
3143         int ret = 0;  char args[BCTEXTLEN];
3144         AVPixelFormat pix_fmt = (AVPixelFormat)avpar->format;
3145         snprintf(args, sizeof(args),
3146                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
3147                 avpar->width, avpar->height, (int)pix_fmt,
3148                 st->time_base.num, st->time_base.den,
3149                 avpar->sample_aspect_ratio.num, avpar->sample_aspect_ratio.den);
3150         if( ret >= 0 )
3151                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
3152                         args, NULL, filter_graph);
3153         if( ret >= 0 )
3154                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
3155                         NULL, NULL, filter_graph);
3156         if( ret >= 0 )
3157                 ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
3158                         (uint8_t*)&pix_fmt, sizeof(pix_fmt),
3159                         AV_OPT_SEARCH_CHILDREN);
3160         if( ret < 0 )
3161                 ff_err(ret, "FFVideoStream::create_filter");
3162         else
3163                 ret = FFStream::create_filter(filter_spec);
3164         return ret >= 0 ? 0 : -1;
3165 }
3166
3167 int FFAudioStream::create_filter(const char *filter_spec, AVCodecParameters *avpar)
3168 {
3169         avfilter_register_all();
3170         const char *sp = filter_spec;
3171         char filter_name[BCSTRLEN], *np = filter_name;
3172         int i = sizeof(filter_name);
3173         while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
3174         *np = 0;
3175         const AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
3176         if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_AUDIO ) {
3177                 ff_err(AVERROR(EINVAL), "FFAudioStream::create_filter: %s\n", filter_spec);
3178                 return -1;
3179         }
3180         filter_graph = avfilter_graph_alloc();
3181         const AVFilter *buffersrc = avfilter_get_by_name("abuffer");
3182         const AVFilter *buffersink = avfilter_get_by_name("abuffersink");
3183         int ret = 0;  char args[BCTEXTLEN];
3184         AVSampleFormat sample_fmt = (AVSampleFormat)avpar->format;
3185         snprintf(args, sizeof(args),
3186                 "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%jx",
3187                 st->time_base.num, st->time_base.den, avpar->sample_rate,
3188                 av_get_sample_fmt_name(sample_fmt), avpar->channel_layout);
3189         if( ret >= 0 )
3190                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
3191                         args, NULL, filter_graph);
3192         if( ret >= 0 )
3193                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
3194                         NULL, NULL, filter_graph);
3195         if( ret >= 0 )
3196                 ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
3197                         (uint8_t*)&sample_fmt, sizeof(sample_fmt),
3198                         AV_OPT_SEARCH_CHILDREN);
3199         if( ret >= 0 )
3200                 ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
3201                         (uint8_t*)&avpar->channel_layout,
3202                         sizeof(avpar->channel_layout), AV_OPT_SEARCH_CHILDREN);
3203         if( ret >= 0 )
3204                 ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
3205                         (uint8_t*)&sample_rate, sizeof(sample_rate),
3206                         AV_OPT_SEARCH_CHILDREN);
3207         if( ret < 0 )
3208                 ff_err(ret, "FFAudioStream::create_filter");
3209         else
3210                 ret = FFStream::create_filter(filter_spec);
3211         return ret >= 0 ? 0 : -1;
3212 }
3213
3214 int FFStream::create_filter(const char *filter_spec)
3215 {
3216         /* Endpoints for the filter graph. */
3217         AVFilterInOut *outputs = avfilter_inout_alloc();
3218         outputs->name = av_strdup("in");
3219         outputs->filter_ctx = buffersrc_ctx;
3220         outputs->pad_idx = 0;
3221         outputs->next = 0;
3222
3223         AVFilterInOut *inputs  = avfilter_inout_alloc();
3224         inputs->name = av_strdup("out");
3225         inputs->filter_ctx = buffersink_ctx;
3226         inputs->pad_idx = 0;
3227         inputs->next = 0;
3228
3229         int ret = !outputs->name || !inputs->name ? -1 : 0;
3230         if( ret >= 0 )
3231                 ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
3232                         &inputs, &outputs, NULL);
3233         if( ret >= 0 )
3234                 ret = avfilter_graph_config(filter_graph, NULL);
3235
3236         if( ret < 0 ) {
3237                 ff_err(ret, "FFStream::create_filter");
3238                 avfilter_graph_free(&filter_graph);
3239                 filter_graph = 0;
3240         }
3241         avfilter_inout_free(&inputs);
3242         avfilter_inout_free(&outputs);
3243         return ret;
3244 }
3245
3246 int FFMPEG::scan(IndexState *index_state, int64_t *scan_position, int *canceled)
3247 {
3248         AVPacket pkt;
3249         av_init_packet(&pkt);
3250         AVFrame *frame = av_frame_alloc();
3251         if( !frame ) {
3252                 fprintf(stderr,"FFMPEG::scan: ");
3253                 fprintf(stderr,_("av_frame_alloc failed\n"));
3254                 fprintf(stderr,"FFMPEG::scan:file=%s\n", file_base->asset->path);
3255                 return -1;
3256         }
3257
3258         index_state->add_video_markers(ffvideo.size());
3259         index_state->add_audio_markers(ffaudio.size());
3260
3261         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
3262                 int ret = 0;
3263                 AVDictionary *copts = 0;
3264                 av_dict_copy(&copts, opts, 0);
3265                 AVStream *st = fmt_ctx->streams[i];
3266                 AVCodecID codec_id = st->codecpar->codec_id;
3267                 AVCodec *decoder = avcodec_find_decoder(codec_id);
3268                 AVCodecContext *avctx = avcodec_alloc_context3(decoder);
3269                 if( !avctx ) {
3270                         eprintf(_("cant allocate codec context\n"));
3271                         ret = AVERROR(ENOMEM);
3272                 }
3273                 if( ret >= 0 ) {
3274                         avcodec_parameters_to_context(avctx, st->codecpar);
3275                         if( !av_dict_get(copts, "threads", NULL, 0) )
3276                                 avctx->thread_count = ff_cpus();
3277                         ret = avcodec_open2(avctx, decoder, &copts);
3278                 }
3279                 av_dict_free(&copts);
3280                 if( ret >= 0 ) {
3281                         AVCodecParameters *avpar = st->codecpar;
3282                         switch( avpar->codec_type ) {
3283                         case AVMEDIA_TYPE_VIDEO: {
3284                                 int vidx = ffvideo.size();
3285                                 while( --vidx>=0 && ffvideo[vidx]->fidx != i );
3286                                 if( vidx < 0 ) break;
3287                                 ffvideo[vidx]->avctx = avctx;
3288                                 continue; }
3289                         case AVMEDIA_TYPE_AUDIO: {
3290                                 int aidx = ffaudio.size();
3291                                 while( --aidx>=0 && ffaudio[aidx]->fidx != i );
3292                                 if( aidx < 0 ) break;
3293                                 ffaudio[aidx]->avctx = avctx;
3294                                 continue; }
3295                         default: break;
3296                         }
3297                 }
3298                 fprintf(stderr,"FFMPEG::scan: ");
3299                 fprintf(stderr,_("codec open failed\n"));
3300                 fprintf(stderr,"FFMPEG::scan:file=%s\n", file_base->asset->path);
3301                 avcodec_free_context(&avctx);
3302         }
3303
3304         decode_activate();
3305         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
3306                 AVStream *st = fmt_ctx->streams[i];
3307                 AVCodecParameters *avpar = st->codecpar;
3308                 if( avpar->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
3309                 int64_t tstmp = st->start_time;
3310                 if( tstmp == AV_NOPTS_VALUE ) continue;
3311                 int aidx = ffaudio.size();
3312                 while( --aidx>=0 && ffaudio[aidx]->fidx != i );
3313                 if( aidx < 0 ) continue;
3314                 FFAudioStream *aud = ffaudio[aidx];
3315                 tstmp -= aud->nudge;
3316                 double secs = to_secs(tstmp, st->time_base);
3317                 aud->curr_pos = secs * aud->sample_rate + 0.5;
3318         }
3319
3320         int errs = 0;
3321         for( int64_t count=0; !*canceled; ++count ) {
3322                 av_packet_unref(&pkt);
3323                 pkt.data = 0; pkt.size = 0;
3324
3325                 int ret = av_read_frame(fmt_ctx, &pkt);
3326                 if( ret < 0 ) {
3327                         if( ret == AVERROR_EOF ) break;
3328                         if( ++errs > 100 ) {
3329                                 ff_err(ret,_("over 100 read_frame errs\n"));
3330                                 break;
3331                         }
3332                         continue;
3333                 }
3334                 if( !pkt.data ) continue;
3335                 int i = pkt.stream_index;
3336                 if( i < 0 || i >= (int)fmt_ctx->nb_streams ) continue;
3337                 AVStream *st = fmt_ctx->streams[i];
3338                 if( pkt.pos > *scan_position ) *scan_position = pkt.pos;
3339
3340                 AVCodecParameters *avpar = st->codecpar;
3341                 switch( avpar->codec_type ) {
3342                 case AVMEDIA_TYPE_VIDEO: {
3343                         int vidx = ffvideo.size();
3344                         while( --vidx>=0 && ffvideo[vidx]->fidx != i );
3345                         if( vidx < 0 ) break;
3346                         FFVideoStream *vid = ffvideo[vidx];
3347                         if( !vid->avctx ) break;
3348                         int64_t tstmp = pkt.dts;
3349                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.pts;
3350                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
3351                                 if( vid->nudge != AV_NOPTS_VALUE ) tstmp -= vid->nudge;
3352                                 double secs = to_secs(tstmp, st->time_base);
3353                                 int64_t frm = secs * vid->frame_rate + 0.5;
3354                                 if( frm < 0 ) frm = 0;
3355                                 index_state->put_video_mark(vidx, frm, pkt.pos);
3356                         }
3357 #if 0
3358                         ret = avcodec_send_packet(vid->avctx, pkt);
3359                         if( ret < 0 ) break;
3360                         while( (ret=vid->decode_frame(frame)) > 0 ) {}
3361 #endif
3362                         break; }
3363                 case AVMEDIA_TYPE_AUDIO: {
3364                         int aidx = ffaudio.size();
3365                         while( --aidx>=0 && ffaudio[aidx]->fidx != i );
3366                         if( aidx < 0 ) break;
3367                         FFAudioStream *aud = ffaudio[aidx];
3368                         if( !aud->avctx ) break;
3369                         int64_t tstmp = pkt.pts;
3370                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.dts;
3371                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
3372                                 if( aud->nudge != AV_NOPTS_VALUE ) tstmp -= aud->nudge;
3373                                 double secs = to_secs(tstmp, st->time_base);
3374                                 int64_t sample = secs * aud->sample_rate + 0.5;
3375                                 if( sample >= 0 )
3376                                         index_state->put_audio_mark(aidx, sample, pkt.pos);
3377                         }
3378                         ret = avcodec_send_packet(aud->avctx, &pkt);
3379                         if( ret < 0 ) break;
3380                         int ch = aud->channel0,  nch = aud->channels;
3381                         int64_t pos = index_state->pos(ch);
3382                         if( pos != aud->curr_pos ) {
3383 if( abs(pos-aud->curr_pos) > 1 )
3384 printf("audio%d pad %jd %jd (%jd)\n", aud->idx, pos, aud->curr_pos, pos-aud->curr_pos);
3385                                 index_state->pad_data(ch, nch, aud->curr_pos);
3386                         }
3387                         while( (ret=aud->decode_frame(frame)) > 0 ) {
3388                                 //if( frame->channels != nch ) break;
3389                                 aud->init_swr(frame->channels, frame->format, frame->sample_rate);
3390                                 float *samples;
3391                                 int len = aud->get_samples(samples,
3392                                          &frame->extended_data[0], frame->nb_samples);
3393                                 pos = aud->curr_pos;
3394                                 if( (aud->curr_pos += len) >= 0 ) {
3395                                         if( pos < 0 ) {
3396                                                 samples += -pos * nch;
3397                                                 len = aud->curr_pos;
3398                                         }
3399                                         for( int i=0; i<nch; ++i )
3400                                                 index_state->put_data(ch+i,nch,samples+i,len);
3401                                 }
3402                         }
3403                         break; }
3404                 default: break;
3405                 }
3406         }
3407         av_frame_free(&frame);
3408         return 0;
3409 }
3410
3411 void FFStream::load_markers(IndexMarks &marks, double rate)
3412 {
3413         int in = 0;
3414         int64_t sz = marks.size();
3415         int max_entries = fmt_ctx->max_index_size / sizeof(AVIndexEntry) - 1;
3416         int nb_ent = st->nb_index_entries;
3417 // some formats already have an index
3418         if( nb_ent > 0 ) {
3419                 AVIndexEntry *ep = &st->index_entries[nb_ent-1];
3420                 int64_t tstmp = ep->timestamp;
3421                 if( nudge != AV_NOPTS_VALUE ) tstmp -= nudge;
3422                 double secs = ffmpeg->to_secs(tstmp, st->time_base);
3423                 int64_t no = secs * rate;
3424                 while( in < sz && marks[in].no <= no ) ++in;
3425         }
3426         int64_t len = sz - in;
3427         int64_t count = max_entries - nb_ent;
3428         if( count > len ) count = len;
3429         for( int i=0; i<count; ++i ) {
3430                 int k = in + i * len / count;
3431                 int64_t no = marks[k].no, pos = marks[k].pos;
3432                 double secs = (double)no / rate;
3433                 int64_t tstmp = secs * st->time_base.den / st->time_base.num;
3434                 if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
3435                 av_add_index_entry(st, pos, tstmp, 0, 0, AVINDEX_KEYFRAME);
3436         }
3437 }
3438