cinelerra-5.0/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 // work arounds (centos)
  11 #include <lzma.h>
  12 #ifndef INT64_MAX
  13 #define INT64_MAX 9223372036854775807LL
  14 #endif
  15
  16 #include "asset.h"
  17 #include "bccmodels.h"
  18 #include "fileffmpeg.h"
  19 #include "file.h"
  20 #include "ffmpeg.h"
  21 #include "mainerror.h"
  22 #include "mwindow.h"
  23 #include "vframe.h"
  24
  25
  26 #define VIDEO_INBUF_SIZE 0x10000
  27 #define AUDIO_INBUF_SIZE 0x10000
  28 #define VIDEO_REFILL_THRESH 0
  29 #define AUDIO_REFILL_THRESH 0x1000
  30
  31 Mutex FFMPEG::fflock("FFMPEG::fflock");
  32
  33 static void ff_err(int ret, const char *msg)
  34 {
  35         char errmsg[BCSTRLEN];  av_strerror(ret, errmsg, sizeof(errmsg));
  36         fprintf(stderr,"%s: %s\n",msg, errmsg);
  37 }
  38
  39 FFPacket::FFPacket()
  40 {
  41         init();
  42 }
  43
  44 FFPacket::~FFPacket()
  45 {
  46         av_free_packet(&pkt);
  47 }
  48
  49 void FFPacket::init()
  50 {
  51         av_init_packet(&pkt);
  52         pkt.data = 0; pkt.size = 0;
  53 }
  54
  55 FFrame::FFrame(FFStream *fst)
  56 {
  57         this->fst = fst;
  58         frm = av_frame_alloc();
  59         init = fst->init_frame(frm);
  60 }
  61
  62 FFrame::~FFrame()
  63 {
  64         av_frame_free(&frm);
  65 }
  66
  67 void FFrame::queue(int64_t pos)
  68 {
  69         position = pos;
  70         fst->queue(this);
  71 }
  72
  73 void FFrame::dequeue()
  74 {
  75         fst->dequeue(this);
  76 }
  77
  78 int FFAudioStream::read(float *fp, long len)
  79 {
  80         long n = len * nch;
  81         float *op = outp;
  82         while( n > 0 ) {
  83                 int k = lmt - op;
  84                 if( k > n ) k = n;
  85                 n -= k;
  86                 while( --k >= 0 ) *fp++ = *op++;
  87                 if( op >= lmt ) op = bfr;
  88         }
  89         return len;
  90 }
  91
  92 void FFAudioStream::realloc(long sz, int nch, long len)
  93 {
  94         long bsz = sz * nch;
  95         float *np = new float[bsz];
  96         inp = np + read(np, len) * nch;
  97         outp = np;
  98         lmt = np + bsz;
  99         this->nch = nch;
 100         this->sz = sz;
 101         delete [] bfr;  bfr = np;
 102 }
 103
 104 void FFAudioStream::realloc(long sz, int nch)
 105 {
 106         if( sz > this->sz || this->nch != nch ) {
 107                 long len = this->nch != nch ? 0 : curr_pos - seek_pos;
 108                 if( len > this->sz ) len = this->sz;
 109                 iseek(len);
 110                 realloc(sz, nch, len);
 111         }
 112 }
 113
 114 void FFAudioStream::reserve(long sz, int nch)
 115 {
 116         long len = (inp - outp) / nch;
 117         sz += len;
 118         if( sz > this->sz || this->nch != nch ) {
 119                 if( this->nch != nch ) len = 0;
 120                 realloc(sz, nch, len);
 121                 return;
 122         }
 123         if( (len*=nch) > 0 && bfr != outp )
 124                 memmove(bfr, outp, len*sizeof(*bfr));
 125         outp = bfr;
 126         inp = bfr + len;
 127 }
 128
 129 long FFAudioStream::used()
 130 {
 131         long len = inp>=outp ? inp-outp : inp-bfr + lmt-outp;
 132         return len / nch;
 133 }
 134 long FFAudioStream::avail()
 135 {
 136         float *in1 = inp+1;
 137         if( in1 >= lmt ) in1 = bfr;
 138         long len = outp >= in1 ? outp-in1 : outp-bfr + lmt-in1;
 139         return len / nch;
 140 }
 141 void FFAudioStream::reset() // clear bfr
 142 {
 143         inp = outp = bfr;
 144 }
 145
 146 void FFAudioStream::iseek(int64_t ofs)
 147 {
 148         outp = inp - ofs*nch;
 149         if( outp < bfr ) outp += sz*nch;
 150 }
 151
 152 float *FFAudioStream::get_outp(int ofs)
 153 {
 154         float *ret = outp;
 155         outp += ofs*nch;
 156         return ret;
 157 }
 158
 159 int64_t FFAudioStream::put_inp(int ofs)
 160 {
 161         inp += ofs*nch;
 162         return (inp-outp) / nch;
 163 }
 164
 165 int FFAudioStream::write(const float *fp, long len)
 166 {
 167         long n = len * nch;
 168         float *ip = inp;
 169         while( n > 0 ) {
 170                 int k = lmt - ip;
 171                 if( k > n ) k = n;
 172                 n -= k;
 173                 while( --k >= 0 ) *ip++ = *fp++;
 174                 if( ip >= lmt ) ip = bfr;
 175         }
 176         inp = ip;
 177         return len;
 178 }
 179
 180 int FFAudioStream::zero(long len)
 181 {
 182         long n = len * nch;
 183         float *ip = inp;
 184         while( n > 0 ) {
 185                 int k = lmt - ip;
 186                 if( k > n ) k = n;
 187                 n -= k;
 188                 while( --k >= 0 ) *ip++ = 0;
 189                 if( ip >= lmt ) ip = bfr;
 190         }
 191         inp = ip;
 192         return len;
 193 }
 194
 195 // does not advance outp
 196 int FFAudioStream::read(double *dp, long len, int ch)
 197 {
 198         long n = len;
 199         float *op = outp + ch;
 200         float *lmt1 = lmt + nch-1;
 201         while( n > 0 ) {
 202                 int k = (lmt1 - op) / nch;
 203                 if( k > n ) k = n;
 204                 n -= k;
 205                 while( --k >= 0 ) { *dp++ = *op;  op += nch; }
 206                 if( op >= lmt ) op -= sz*nch;
 207         }
 208         return len;
 209 }
 210
 211 // load linear buffer, no wrapping allowed, does not advance inp
 212 int FFAudioStream::write(const double *dp, long len, int ch)
 213 {
 214         long n = len;
 215         float *ip = inp + ch;
 216         while( --n >= 0 ) { *ip = *dp++;  ip += nch; }
 217         return len;
 218 }
 219
 220
 221 FFStream::FFStream(FFMPEG *ffmpeg, AVStream *st, int idx)
 222 {
 223         this->ffmpeg = ffmpeg;
 224         this->st = st;
 225         this->idx = idx;
 226         frm_lock = new Mutex("FFStream::frm_lock");
 227         fmt_ctx = 0;
 228         filter_graph = 0;
 229         buffersrc_ctx = 0;
 230         buffersink_ctx = 0;
 231         frm_count = 0;
 232         nudge = AV_NOPTS_VALUE;
 233         eof = 0;
 234         reading = writing = 0;
 235         need_packet = 1;
 236         flushed = 0;
 237         frame = fframe = 0;
 238 }
 239
 240 FFStream::~FFStream()
 241 {
 242         if( reading > 0 || writing > 0 ) avcodec_close(st->codec);
 243         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
 244         while( frms.first ) frms.remove(frms.first);
 245         if( filter_graph ) avfilter_graph_free(&filter_graph);
 246         if( frame ) av_frame_free(&frame);
 247         if( fframe ) av_frame_free(&fframe);
 248         bsfilter.remove_all_objects();
 249         delete frm_lock;
 250 }
 251
 252 void FFStream::ff_lock(const char *cp)
 253 {
 254         FFMPEG::fflock.lock(cp);
 255 }
 256
 257 void FFStream::ff_unlock()
 258 {
 259         FFMPEG::fflock.unlock();
 260 }
 261
 262 void FFStream::queue(FFrame *frm)
 263 {
 264         frm_lock->lock("FFStream::queue");
 265         frms.append(frm);
 266         ++frm_count;
 267         frm_lock->unlock();
 268         ffmpeg->mux_lock->unlock();
 269 }
 270
 271 void FFStream::dequeue(FFrame *frm)
 272 {
 273         frm_lock->lock("FFStream::dequeue");
 274         --frm_count;
 275         frms.remove_pointer(frm);
 276         frm_lock->unlock();
 277 }
 278
 279 int FFStream::encode_activate()
 280 {
 281         if( writing < 0 )
 282                 writing = ffmpeg->encode_activate();
 283         return writing;
 284 }
 285
 286 int FFStream::decode_activate()
 287 {
 288         if( reading < 0 && (reading=ffmpeg->decode_activate()) > 0 ) {
 289                 ff_lock("FFStream::decode_activate");
 290                 reading = 0;
 291                 AVDictionary *copts = 0;
 292                 av_dict_copy(&copts, ffmpeg->opts, 0);
 293                 int ret = 0;
 294                 // this should be avformat_copy_context(), but no copy avail
 295                 ret = avformat_open_input(&fmt_ctx, ffmpeg->fmt_ctx->filename, NULL, &copts);
 296                 if( ret >= 0 ) {
 297                         ret = avformat_find_stream_info(fmt_ctx, 0);
 298                         st = fmt_ctx->streams[idx];
 299                 }
 300                 if( ret >= 0 ) {
 301                         AVCodecID codec_id = st->codec->codec_id;
 302                         AVCodec *decoder = avcodec_find_decoder(codec_id);
 303                         ret = avcodec_open2(st->codec, decoder, &copts);
 304                         if( ret >= 0 )
 305                                 reading = 1;
 306                         else
 307                                 eprintf("FFStream::decode_activate: open decoder failed\n");
 308                 }
 309                 else
 310                         eprintf("FFStream::decode_activate: can't clone input file\n");
 311                 av_dict_free(&copts);
 312                 ff_unlock();
 313         }
 314         return reading;
 315 }
 316
 317 int FFStream::read_packet()
 318 {
 319         av_packet_unref(ipkt);
 320         int ret = av_read_frame(fmt_ctx, ipkt);
 321         if( ret >= 0 ) return 1;
 322         st_eof(1);
 323         if( ret == AVERROR_EOF ) return 0;
 324         fprintf(stderr, "FFStream::read_packet: av_read_frame failed\n");
 325         flushed = 1;
 326         return -1;
 327 }
 328
 329 int FFStream::decode(AVFrame *frame)
 330 {
 331         int ret = 0;
 332         int retries = 100;
 333         int got_frame = 0;
 334
 335         while( ret >= 0 && !flushed && --retries >= 0 && !got_frame ) {
 336                 if( need_packet ) {
 337                         need_packet = 0;
 338                         ret = read_packet();
 339                         if( ret < 0 ) break;
 340                         if( !ret ) ipkt->stream_index = st->index;
 341                 }
 342                 if( ipkt->stream_index == st->index ) {
 343                         while( (ipkt->size > 0 || !ipkt->data) && !got_frame ) {
 344                                 ret = decode_frame(frame, got_frame);
 345                                 if( ret < 0 || !ipkt->data ) break;
 346                                 ipkt->data += ret;
 347                                 ipkt->size -= ret;
 348                         }
 349                         retries = 100;
 350                 }
 351                 if( !got_frame ) {
 352                         need_packet = 1;
 353                         flushed = st_eof();
 354                 }
 355         }
 356
 357         if( retries < 0 )
 358                 fprintf(stderr, "FFStream::decode: Retry limit\n");
 359         if( ret >= 0 )
 360                 ret = got_frame;
 361         else
 362                 fprintf(stderr, "FFStream::decode: failed\n");
 363
 364         return ret;
 365 }
 366
 367 int FFStream::load_filter(AVFrame *frame)
 368 {
 369         int ret = av_buffersrc_add_frame_flags(buffersrc_ctx,
 370                         frame, AV_BUFFERSRC_FLAG_KEEP_REF);
 371         if( ret < 0 ) {
 372                 av_frame_unref(frame);
 373                 eprintf("FFStream::load_filter: av_buffersrc_add_frame_flags failed\n");
 374         }
 375         return ret;
 376 }
 377
 378 int FFStream::read_filter(AVFrame *frame)
 379 {
 380         int ret = av_buffersink_get_frame(buffersink_ctx, frame);
 381         if( ret < 0 ) {
 382                 if( ret == AVERROR(EAGAIN) ) return 0;
 383                 if( ret == AVERROR_EOF ) { st_eof(1); return -1; }
 384                 fprintf(stderr, "FFStream::read_filter: av_buffersink_get_frame failed\n");
 385                 return ret;
 386         }
 387         return 1;
 388 }
 389
 390 int FFStream::read_frame(AVFrame *frame)
 391 {
 392         if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
 393                 return decode(frame);
 394         if( !fframe && !(fframe=av_frame_alloc()) ) {
 395                 fprintf(stderr, "FFStream::read_frame: av_frame_alloc failed\n");
 396                 return -1;
 397         }
 398         int ret = -1;
 399         while( !flushed && !(ret=read_filter(frame)) ) {
 400                 if( (ret=decode(fframe)) < 0 ) break;
 401                 if( ret > 0 && (ret=load_filter(fframe)) < 0 ) break;
 402         }
 403         return ret;
 404 }
 405
 406 FFAudioStream::FFAudioStream(FFMPEG *ffmpeg, AVStream *strm, int idx)
 407  : FFStream(ffmpeg, strm, idx)
 408 {
 409         channel0 = channels = 0;
 410         sample_rate = 0;
 411         mbsz = 0;
 412         seek_pos = curr_pos = 0;
 413         length = 0;
 414         resample_context = 0;
 415
 416         aud_bfr_sz = 0;
 417         aud_bfr = 0;
 418
 419 // history buffer
 420         nch = 2;
 421         sz = 0x10000;
 422         long bsz = sz * nch;
 423         bfr = new float[bsz];
 424         inp = outp = bfr;
 425         lmt = bfr + bsz;
 426 }
 427
 428 FFAudioStream::~FFAudioStream()
 429 {
 430         if( resample_context ) swr_free(&resample_context);
 431         delete [] aud_bfr;
 432         delete [] bfr;
 433 }
 434
 435 int FFAudioStream::load_history(uint8_t **data, int len)
 436 {
 437         float *samples = *(float **)data;
 438         if( resample_context ) {
 439                 if( len > aud_bfr_sz ) {
 440                         delete [] aud_bfr;
 441                         aud_bfr = 0;
 442                 }
 443                 if( !aud_bfr ) {
 444                         aud_bfr_sz = len;
 445                         aud_bfr = new float[aud_bfr_sz*channels];
 446                 }
 447                 int ret = swr_convert(resample_context,
 448                         (uint8_t**)&aud_bfr, aud_bfr_sz, (const uint8_t**)data, len);
 449                 if( ret < 0 ) {
 450                         fprintf(stderr, "FFAudioStream::load_history: swr_convert failed\n");
 451                         return -1;
 452                 }
 453                 samples = aud_bfr;
 454                 len = ret;
 455         }
 456         // biggest user bfr since seek + frame
 457         realloc(mbsz + len + 1, channels);
 458         write(samples, len);
 459         return len;
 460 }
 461
 462 int FFAudioStream::decode_frame(AVFrame *frame, int &got_frame)
 463 {
 464         int ret = avcodec_decode_audio4(st->codec, frame, &got_frame, ipkt);
 465         if( ret < 0 ) {
 466                 fprintf(stderr, "FFAudioStream::decode_frame: Could not read audio frame\n");
 467                 return -1;
 468         }
 469         return ret;
 470 }
 471
 472 int FFAudioStream::encode_activate()
 473 {
 474         if( writing >= 0 ) return writing;
 475         AVCodecContext *ctx = st->codec;
 476         frame_sz = ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 477                 10000 : ctx->frame_size;
 478         return FFStream::encode_activate();
 479 }
 480
 481 int FFAudioStream::nb_samples()
 482 {
 483         AVCodecContext *ctx = st->codec;
 484         return ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 485                 10000 : ctx->frame_size;
 486 }
 487
 488 int64_t FFAudioStream::load_buffer(double ** const sp, int len)
 489 {
 490         reserve(len+1, st->codec->channels);
 491         for( int ch=0; ch<nch; ++ch )
 492                 write(sp[ch], len, ch);
 493         return put_inp(len);
 494 }
 495
 496 int FFAudioStream::in_history(int64_t pos)
 497 {
 498         if( pos > curr_pos ) return 0;
 499         int64_t len = curr_pos - seek_pos;
 500         if( len > sz ) len = sz;
 501         if( pos < curr_pos - len ) return 0;
 502         return 1;
 503 }
 504
 505
 506 int FFAudioStream::init_frame(AVFrame *frame)
 507 {
 508         AVCodecContext *ctx = st->codec;
 509         frame->nb_samples = frame_sz;
 510         frame->format = ctx->sample_fmt;
 511         frame->channel_layout = ctx->channel_layout;
 512         frame->sample_rate = ctx->sample_rate;
 513         int ret = av_frame_get_buffer(frame, 0);
 514         if (ret < 0)
 515                 fprintf(stderr, "FFAudioStream::init_frame: av_frame_get_buffer failed\n");
 516         return ret;
 517 }
 518
 519 int FFAudioStream::load(int64_t pos, int len)
 520 {
 521         if( audio_seek(pos) < 0 ) return -1;
 522         if( mbsz < len ) mbsz = len;
 523         int ret = 0;
 524         int64_t end_pos = pos + len;
 525         if( !frame && !(frame=av_frame_alloc()) ) {
 526                 fprintf(stderr, "FFAudioStream::load: av_frame_alloc failed\n");
 527                 return -1;
 528         }
 529         for( int i=0; ret>=0 && !flushed && curr_pos<end_pos && i<1000; ++i ) {
 530                 ret = read_frame(frame);
 531                 if( ret > 0 ) {
 532                         load_history(&frame->extended_data[0], frame->nb_samples);
 533                         curr_pos += frame->nb_samples;
 534                 }
 535         }
 536         if( flushed && end_pos > curr_pos ) {
 537                 zero(end_pos - curr_pos);
 538                 curr_pos = end_pos;
 539         }
 540         return curr_pos - pos;
 541 }
 542
 543 int FFAudioStream::audio_seek(int64_t pos)
 544 {
 545         if( decode_activate() < 0 ) return -1;
 546         if( in_history(pos) ) {
 547                 iseek(curr_pos - pos);
 548                 return 0;
 549         }
 550         if( pos == curr_pos ) return 0;
 551         double secs = (double)pos / sample_rate;
 552         int64_t tstmp = secs * st->time_base.den / st->time_base.num;
 553         if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 554         avformat_seek_file(fmt_ctx, st->index, -INT64_MAX, tstmp, INT64_MAX, 0);
 555         seek_pos = curr_pos = pos;
 556         mbsz = 0;
 557         reset();
 558         st_eof(0);
 559         return 1;
 560 }
 561
 562 int FFAudioStream::encode(double **samples, int len)
 563 {
 564         if( encode_activate() <= 0 ) return -1;
 565         ffmpeg->flow_ctl();
 566         int ret = 0;
 567         int64_t count = load_buffer(samples, len);
 568         FFrame *frm = 0;
 569
 570         while( ret >= 0 && count >= frame_sz ) {
 571                 frm = new FFrame(this);
 572                 if( (ret=frm->initted()) < 0 ) break;
 573                 AVFrame *frame = *frm;
 574                 float *bfrp = get_outp(frame_sz);
 575                 ret =  swr_convert(resample_context,
 576                         (uint8_t **)frame->extended_data, frame_sz,
 577                         (const uint8_t **)&bfrp, frame_sz);
 578                 if( ret < 0 ) {
 579                         fprintf(stderr, "FFAudioStream::encode: swr_convert failed\n");
 580                         break;
 581                 }
 582                 frm->queue(curr_pos);
 583                 frm = 0;
 584                 curr_pos += frame_sz;
 585                 count -= frame_sz;
 586         }
 587
 588         delete frm;
 589         return ret >= 0 ? 0 : 1;
 590 }
 591
 592 FFVideoStream::FFVideoStream(FFMPEG *ffmpeg, AVStream *strm, int idx)
 593  : FFStream(ffmpeg, strm, idx)
 594 {
 595         width = height = 0;
 596         frame_rate = 0;
 597         aspect_ratio = 0;
 598         seek_pos = curr_pos = 0;
 599         length = 0;
 600         convert_ctx = 0;
 601 }
 602
 603 FFVideoStream::~FFVideoStream()
 604 {
 605         if( convert_ctx ) sws_freeContext(convert_ctx);
 606 }
 607
 608 int FFVideoStream::decode_frame(AVFrame *frame, int &got_frame)
 609 {
 610         int ret = avcodec_decode_video2(st->codec, frame, &got_frame, ipkt);
 611         if( ret < 0 ) {
 612                 fprintf(stderr, "FFVideoStream::decode_frame: Could not read video frame\n");
 613                 return -1;
 614         }
 615         if( got_frame )
 616                 ++curr_pos;
 617         return ret;
 618 }
 619
 620 int FFVideoStream::load(VFrame *vframe, int64_t pos)
 621 {
 622         if( video_seek(pos) < 0 ) return -1;
 623         if( !frame && !(frame=av_frame_alloc()) ) {
 624                 fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
 625                 return -1;
 626         }
 627         int ret = 0;
 628         for( int i=0; ret>=0 && !flushed && curr_pos<=pos && i<1000; ++i ) {
 629                 ret = read_frame(frame);
 630         }
 631         if( ret > 0 ) {
 632                 AVCodecContext *ctx = st->codec;
 633                 ret = convert_cmodel(vframe, (AVPicture *)frame,
 634                         ctx->pix_fmt, ctx->width, ctx->height);
 635         }
 636         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
 637         return ret;
 638 }
 639
 640 int FFVideoStream::video_seek(int64_t pos)
 641 {
 642         if( decode_activate() < 0 ) return -1;
 643 // if close enough, just read up to current
 644 //   3*gop_size seems excessive, but less causes tears
 645         int gop = 3*st->codec->gop_size;
 646         if( gop < 4 ) gop = 4;
 647         if( gop > 64 ) gop = 64;
 648         if( pos >= curr_pos && pos <= curr_pos + gop ) return 0;
 649 // back up a few frames to read up to current to help repair damages
 650         if( (pos-=gop) < 0 ) pos = 0;
 651         double secs = (double)pos / frame_rate;
 652         int64_t tstmp = secs * st->time_base.den / st->time_base.num;
 653         if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 654         avformat_seek_file(fmt_ctx, st->index, -INT64_MAX, tstmp, INT64_MAX, 0);
 655         seek_pos = curr_pos = pos;
 656         st_eof(0);
 657         return 1;
 658 }
 659
 660 int FFVideoStream::init_frame(AVFrame *picture)
 661 {
 662         AVCodecContext *ctx = st->codec;
 663         picture->format = ctx->pix_fmt;
 664         picture->width  = ctx->width;
 665         picture->height = ctx->height;
 666         int ret = av_frame_get_buffer(picture, 32);
 667         return ret;
 668 }
 669
 670 int FFVideoStream::encode(VFrame *vframe)
 671 {
 672         if( encode_activate() <= 0 ) return -1;
 673         ffmpeg->flow_ctl();
 674         FFrame *picture = new FFrame(this);
 675         int ret = picture->initted();
 676         if( ret >= 0 ) {
 677                 AVFrame *frame = *picture;
 678                 frame->pts = curr_pos;
 679                 AVCodecContext *ctx = st->codec;
 680                 ret = convert_pixfmt(vframe, (AVPicture*)frame,
 681                         ctx->pix_fmt, ctx->width, ctx->height);
 682         }
 683         if( ret >= 0 ) {
 684                 picture->queue(curr_pos);
 685                 ++curr_pos;
 686         }
 687         else {
 688                 fprintf(stderr, "FFVideoStream::encode: encode failed\n");
 689                 delete picture;
 690         }
 691         return ret >= 0 ? 0 : 1;
 692 }
 693
 694
 695 PixelFormat FFVideoStream::color_model_to_pix_fmt(int color_model)
 696 {
 697         switch( color_model ) {
 698         case BC_YUV422:         return AV_PIX_FMT_YUYV422;
 699         case BC_RGB888:         return AV_PIX_FMT_RGB24;
 700         case BC_RGBA8888:       return AV_PIX_FMT_RGBA;
 701         case BC_BGR8888:        return AV_PIX_FMT_BGR0;
 702         case BC_BGR888:         return AV_PIX_FMT_BGR24;
 703         case BC_YUV420P:        return AV_PIX_FMT_YUV420P;
 704         case BC_YUV422P:        return AV_PIX_FMT_YUV422P;
 705         case BC_YUV444P:        return AV_PIX_FMT_YUV444P;
 706         case BC_YUV411P:        return AV_PIX_FMT_YUV411P;
 707         case BC_RGB565:         return AV_PIX_FMT_RGB565;
 708         case BC_RGB161616:      return AV_PIX_FMT_RGB48LE;
 709         case BC_RGBA16161616:   return AV_PIX_FMT_RGBA64LE;
 710         default: break;
 711         }
 712
 713         return AV_PIX_FMT_NB;
 714 }
 715
 716 int FFVideoStream::pix_fmt_to_color_model(PixelFormat pix_fmt)
 717 {
 718         switch (pix_fmt) {
 719         case AV_PIX_FMT_YUYV422:        return BC_YUV422;
 720         case AV_PIX_FMT_RGB24:          return BC_RGB888;
 721         case AV_PIX_FMT_RGBA:           return BC_RGBA8888;
 722         case AV_PIX_FMT_BGR0:           return BC_BGR8888;
 723         case AV_PIX_FMT_BGR24:          return BC_BGR888;
 724         case AV_PIX_FMT_YUV420P:        return BC_YUV420P;
 725         case AV_PIX_FMT_YUV422P:        return BC_YUV422P;
 726         case AV_PIX_FMT_YUV444P:        return BC_YUV444P;
 727         case AV_PIX_FMT_YUV411P:        return BC_YUV411P;
 728         case AV_PIX_FMT_RGB565:         return BC_RGB565;
 729         case AV_PIX_FMT_RGB48LE:        return BC_RGB161616;
 730         case AV_PIX_FMT_RGBA64LE:       return BC_RGBA16161616;
 731         default: break;
 732         }
 733
 734         return BC_TRANSPARENCY;
 735 }
 736
 737 int FFVideoStream::convert_picture_vframe(VFrame *frame,
 738                 AVPicture *ip, PixelFormat ifmt, int iw, int ih)
 739 {
 740         AVPicture opic;
 741         int cmodel = frame->get_color_model();
 742         PixelFormat ofmt = color_model_to_pix_fmt(cmodel);
 743         if( ofmt == AV_PIX_FMT_NB ) return -1;
 744         int size = avpicture_fill(&opic, frame->get_data(), ofmt,
 745                                   frame->get_w(), frame->get_h());
 746         if( size < 0 ) return -1;
 747
 748         // transfer line sizes must match also
 749         int planar = BC_CModels::is_planar(cmodel);
 750         int packed_width = !planar ? frame->get_bytes_per_line() :
 751                  BC_CModels::calculate_pixelsize(cmodel) * frame->get_w();
 752         if( packed_width != opic.linesize[0] )  return -1;
 753
 754         if( planar ) {
 755                 // override avpicture_fill() for planar types
 756                 opic.data[0] = frame->get_y();
 757                 opic.data[1] = frame->get_u();
 758                 opic.data[2] = frame->get_v();
 759         }
 760
 761         convert_ctx = sws_getCachedContext(convert_ctx, iw, ih, ifmt,
 762                 frame->get_w(), frame->get_h(), ofmt, SWS_BICUBIC, NULL, NULL, NULL);
 763         if( !convert_ctx ) {
 764                 fprintf(stderr, "FFVideoStream::convert_picture_frame:"
 765                                 " sws_getCachedContext() failed\n");
 766                 return 1;
 767         }
 768         if( sws_scale(convert_ctx, ip->data, ip->linesize, 0, ih,
 769             opic.data, opic.linesize) < 0 ) {
 770                 fprintf(stderr, "FFVideoStream::convert_picture_frame: sws_scale() failed\n");
 771                 return 1;
 772         }
 773         return 0;
 774 }
 775
 776 int FFVideoStream::convert_cmodel(VFrame *frame,
 777                  AVPicture *ip, PixelFormat ifmt, int iw, int ih)
 778 {
 779         // try direct transfer
 780         if( !convert_picture_vframe(frame, ip, ifmt, iw, ih) ) return 1;
 781         // use indirect transfer
 782         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ifmt);
 783         int max_bits = 0;
 784         for( int i = 0; i <desc->nb_components; ++i ) {
 785                 int bits = desc->comp[i].depth_minus1 + 1;
 786                 if( bits > max_bits ) max_bits = bits;
 787         }
 788 // from libavcodec/pixdesc.c
 789 #define pixdesc_has_alpha(pixdesc) ((pixdesc)->nb_components == 2 || \
 790  (pixdesc)->nb_components == 4 || (pixdesc)->flags & AV_PIX_FMT_FLAG_PAL)
 791         int icolor_model = pixdesc_has_alpha(desc) ?
 792                 (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
 793                 (max_bits > 8 ? BC_RGB161616 : BC_RGB888) ;
 794         VFrame vframe(iw, ih, icolor_model);
 795         if( convert_picture_vframe(&vframe, ip, ifmt, iw, ih) ) return -1;
 796         frame->transfer_from(&vframe);
 797         return 1;
 798 }
 799
 800 int FFVideoStream::convert_vframe_picture(VFrame *frame,
 801                 AVPicture *op, PixelFormat ofmt, int ow, int oh)
 802 {
 803         AVPicture opic;
 804         int cmodel = frame->get_color_model();
 805         PixelFormat ifmt = color_model_to_pix_fmt(cmodel);
 806         if( ifmt == AV_PIX_FMT_NB ) return -1;
 807         int size = avpicture_fill(&opic, frame->get_data(), ifmt,
 808                                   frame->get_w(), frame->get_h());
 809         if( size < 0 ) return -1;
 810
 811         // transfer line sizes must match also
 812         int planar = BC_CModels::is_planar(cmodel);
 813         int packed_width = !planar ? frame->get_bytes_per_line() :
 814                  BC_CModels::calculate_pixelsize(cmodel) * frame->get_w();
 815         if( packed_width != opic.linesize[0] )  return -1;
 816
 817         if( planar ) {
 818                 // override avpicture_fill() for planar types
 819                 opic.data[0] = frame->get_y();
 820                 opic.data[1] = frame->get_u();
 821                 opic.data[2] = frame->get_v();
 822         }
 823
 824         convert_ctx = sws_getCachedContext(convert_ctx, frame->get_w(), frame->get_h(), ifmt,
 825                 ow, oh, ofmt, SWS_BICUBIC, NULL, NULL, NULL);
 826         if( !convert_ctx ) {
 827                 fprintf(stderr, "FFVideoStream::convert_frame_picture:"
 828                                 " sws_getCachedContext() failed\n");
 829                 return 1;
 830         }
 831         if( sws_scale(convert_ctx, opic.data, opic.linesize, 0, frame->get_h(),
 832                         op->data, op->linesize) < 0 ) {
 833                 fprintf(stderr, "FFVideoStream::convert_frame_picture: sws_scale() failed\n");
 834                 return 1;
 835         }
 836         return 0;
 837 }
 838
 839 int FFVideoStream::convert_pixfmt(VFrame *frame,
 840                  AVPicture *op, PixelFormat ofmt, int ow, int oh)
 841 {
 842         // try direct transfer
 843         if( !convert_vframe_picture(frame, op, ofmt, ow, oh) ) return 0;
 844         // use indirect transfer
 845         int colormodel = frame->get_color_model();
 846         int bits = BC_CModels::calculate_pixelsize(colormodel) * 8;
 847         bits /= BC_CModels::components(colormodel);
 848         int icolor_model =  BC_CModels::has_alpha(colormodel) ?
 849                 (bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
 850                 (bits > 8 ? BC_RGB161616: BC_RGB888) ;
 851         VFrame vframe(frame->get_w(), frame->get_h(), icolor_model);
 852         vframe.transfer_from(frame);
 853         if( convert_vframe_picture(&vframe, op, ofmt, ow, oh) ) return 1;
 854         return 0;
 855 }
 856
 857
 858 FFMPEG::FFMPEG(FileBase *file_base)
 859 {
 860         fmt_ctx = 0;
 861         this->file_base = file_base;
 862         memset(file_format,0,sizeof(file_format));
 863         mux_lock = new Condition(0,"FFMPEG::mux_lock",0);
 864         flow_lock = new Condition(1,"FFStream::flow_lock",0);
 865         done = -1;
 866         flow = 1;
 867         decoding = encoding = 0;
 868         has_audio = has_video = 0;
 869         opts = 0;
 870         opt_duration = -1;
 871         opt_video_filter = 0;
 872         opt_audio_filter = 0;
 873         char option_path[BCTEXTLEN];
 874         set_option_path(option_path, "%s", "ffmpeg.opts");
 875         read_options(option_path, opts);
 876 }
 877
 878 FFMPEG::~FFMPEG()
 879 {
 880         ff_lock("FFMPEG::~FFMPEG()");
 881         close_encoder();
 882         ffaudio.remove_all_objects();
 883         ffvideo.remove_all_objects();
 884         if( encoding ) avformat_free_context(fmt_ctx);
 885         ff_unlock();
 886         delete flow_lock;
 887         delete mux_lock;
 888         av_dict_free(&opts);
 889         delete opt_video_filter;
 890         delete opt_audio_filter;
 891 }
 892
 893 int FFMPEG::check_sample_rate(AVCodec *codec, int sample_rate)
 894 {
 895         const int *p = codec->supported_samplerates;
 896         if( !p ) return sample_rate;
 897         while( *p != 0 ) {
 898                 if( *p == sample_rate ) return *p;
 899                 ++p;
 900         }
 901         return 0;
 902 }
 903
 904 static inline AVRational std_frame_rate(int i)
 905 {
 906         static const int m1 = 1001*12, m2 = 1000*12;
 907         static const int freqs[] = {
 908                 40*m1, 48*m1, 50*m1, 60*m1, 80*m1,120*m1, 240*m1,
 909                 24*m2, 30*m2, 60*m2, 12*m2, 15*m2, 48*m2, 0,
 910         };
 911         int freq = i<30*12 ? (i+1)*1001 : freqs[i-30*12];
 912         return (AVRational) { freq, 1001*12 };
 913 }
 914
 915 AVRational FFMPEG::check_frame_rate(AVCodec *codec, double frame_rate)
 916 {
 917         const AVRational *p = codec->supported_framerates;
 918         AVRational rate, best_rate = (AVRational) { 0, 0 };
 919         double max_err = 1.;  int i = 0;
 920         while( ((p ? (rate=*p++) : (rate=std_frame_rate(i++))), rate.num) != 0 ) {
 921                 double framerate = (double) rate.num / rate.den;
 922                 double err = fabs(frame_rate/framerate - 1.);
 923                 if( err >= max_err ) continue;
 924                 max_err = err;
 925                 best_rate = rate;
 926         }
 927         return max_err < 0.0001 ? best_rate : (AVRational) { 0, 0 };
 928 }
 929
 930 AVRational FFMPEG::to_sample_aspect_ratio(double aspect_ratio)
 931 {
 932         int height = 1000000, width = height * aspect_ratio;
 933         float w, h;
 934         MWindow::create_aspect_ratio(w, h, width, height);
 935         return (AVRational){(int)w, (int)h};
 936 }
 937
 938 AVRational FFMPEG::to_time_base(int sample_rate)
 939 {
 940         return (AVRational){1, sample_rate};
 941 }
 942
 943 extern void get_exe_path(char *result); // from main.C
 944
 945 void FFMPEG::set_option_path(char *path, const char *fmt, ...)
 946 {
 947         get_exe_path(path);
 948         strcat(path, "/ffmpeg/");
 949         path += strlen(path);
 950         va_list ap;
 951         va_start(ap, fmt);
 952         vsprintf(path, fmt, ap);
 953         va_end(ap);
 954 }
 955
 956 void FFMPEG::get_option_path(char *path, const char *type, const char *spec)
 957 {
 958         if( *spec == '/' )
 959                 strcpy(path, spec);
 960         else
 961                 set_option_path(path, "%s/%s", type, spec);
 962 }
 963
 964 int FFMPEG::get_format(char *format, const char *path, char *spec)
 965 {
 966         char option_path[BCTEXTLEN], line[BCTEXTLEN], codec[BCSTRLEN];
 967         get_option_path(option_path, path, spec);
 968         FILE *fp = fopen(option_path,"r");
 969         if( !fp ) return 1;
 970         int ret = 0;
 971         if( !fgets(line, sizeof(line), fp) ) ret = 1;
 972         if( !ret ) {
 973                 line[sizeof(line)-1] = 0;
 974                 ret = scan_option_line(line, format, codec);
 975         }
 976         fclose(fp);
 977         return ret;
 978 }
 979
 980 int FFMPEG::get_file_format()
 981 {
 982         int ret = 0;
 983         char audio_format[BCSTRLEN], video_format[BCSTRLEN];
 984         file_format[0] = audio_format[0] = video_format[0] = 0;
 985         Asset *asset = file_base->asset;
 986         if( !ret && asset->audio_data )
 987                 ret = get_format(audio_format, "audio", asset->acodec);
 988         if( !ret && asset->video_data )
 989                 ret = get_format(video_format, "video", asset->vcodec);
 990         if( !ret && !audio_format[0] && !video_format[0] )
 991                 ret = 1;
 992         if( !ret && audio_format[0] && video_format[0] &&
 993             strcmp(audio_format, video_format) ) ret = -1;
 994         if( !ret )
 995                 strcpy(file_format, audio_format[0] ? audio_format : video_format);
 996         return ret;
 997 }
 998
 999 int FFMPEG::scan_option_line(char *cp, char *tag, char *val)
1000 {
1001         while( *cp == ' ' || *cp == '\t' ) ++cp;
1002         char *bp = cp;
1003         while( *cp && *cp != ' ' && *cp != '\t' && *cp != '=' ) ++cp;
1004         int len = cp - bp;
1005         if( !len || len > BCSTRLEN-1 ) return 1;
1006         while( bp < cp ) *tag++ = *bp++;
1007         *tag = 0;
1008         while( *cp == ' ' || *cp == '\t' ) ++cp;
1009         if( *cp == '=' ) ++cp;
1010         while( *cp == ' ' || *cp == '\t' ) ++cp;
1011         bp = cp;
1012         while( *cp && *cp != '\n' ) ++cp;
1013         len = cp - bp;
1014         if( len > BCTEXTLEN-1 ) return 1;
1015         while( bp < cp ) *val++ = *bp++;
1016         *val = 0;
1017         return 0;
1018 }
1019
1020 int FFMPEG::get_encoder(const char *options,
1021                 char *format, char *codec, char *bsfilter, char *bsargs)
1022 {
1023         FILE *fp = fopen(options,"r");
1024         if( !fp ) {
1025                 eprintf("FFMPEG::get_encoder: options open failed %s\n",options);
1026                 return 1;
1027         }
1028         if( get_encoder(fp, format, codec, bsfilter, bsargs) )
1029                 eprintf("FFMPEG::get_encoder:"
1030                         " err: format/codec not found %s\n", options);
1031         fclose(fp);
1032         return 0;
1033 }
1034
1035 int FFMPEG::get_encoder(FILE *fp,
1036                 char *format, char *codec, char *bsfilter, char *bsargs)
1037 {
1038         format[0] = codec[0] = bsfilter[0] = bsargs[0] = 0;
1039         char line[BCTEXTLEN];
1040         if( !fgets(line, sizeof(line), fp) ) return 1;
1041         line[sizeof(line)-1] = 0;
1042         if( scan_option_line(line, format, codec) ) return 1;
1043         char *cp = codec;
1044         while( *cp && *cp != '|' ) ++cp;
1045         if( !*cp ) return 0;
1046         if( scan_option_line(cp+1, bsfilter, bsargs) ) return 1;
1047         do { *cp-- = 0; } while( cp>=codec && (*cp==' ' || *cp == '\t' ) );
1048         return 0;
1049 }
1050
1051 int FFMPEG::read_options(const char *options, AVDictionary *&opts)
1052 {
1053         FILE *fp = fopen(options,"r");
1054         if( !fp ) return 1;
1055         int ret = read_options(fp, options, opts);
1056         fclose(fp);
1057         return ret;
1058 }
1059
1060 int FFMPEG::scan_options(const char *options, AVDictionary *&opts)
1061 {
1062         FILE *fp = fmemopen((void *)options,strlen(options),"r");
1063         if( !fp ) return 0;
1064         int ret = read_options(fp, options, opts);
1065         fclose(fp);
1066         return ret;
1067 }
1068
1069 int FFMPEG::read_options(FILE *fp, const char *options, AVDictionary *&opts)
1070 {
1071         int ret = 0, no = 0;
1072         char line[BCTEXTLEN];
1073         while( !ret && fgets(line, sizeof(line), fp) ) {
1074                 line[sizeof(line)-1] = 0;
1075                 ++no;
1076                 if( line[0] == '#' ) continue;
1077                 if( line[0] == '\n' ) continue;
1078                 char key[BCSTRLEN], val[BCTEXTLEN];
1079                 if( scan_option_line(line, key, val) ) {
1080                         eprintf("FFMPEG::read_options:"
1081                                 " err reading %s: line %d\n", options, no);
1082                         ret = 1;
1083                 }
1084                 if( !ret ) {
1085                         if( !strcmp(key, "duration") )
1086                                 opt_duration = strtod(val, 0);
1087                         if( !strcmp(key, "video_filter") )
1088                                 opt_video_filter = cstrdup(val);
1089                         if( !strcmp(key, "audio_filter") )
1090                                 opt_audio_filter = cstrdup(val);
1091                         else if( !strcmp(key, "loglevel") )
1092                                 set_loglevel(val);
1093                         else
1094                                 av_dict_set(&opts, key, val, 0);
1095                 }
1096         }
1097         return ret;
1098 }
1099
1100 int FFMPEG::load_options(const char *options, AVDictionary *&opts)
1101 {
1102         char option_path[BCTEXTLEN];
1103         set_option_path(option_path, "%s", options);
1104         return read_options(option_path, opts);
1105 }
1106
1107 void FFMPEG::set_loglevel(const char *ap)
1108 {
1109         if( !ap || !*ap ) return;
1110         const struct {
1111                 const char *name;
1112                 int level;
1113         } log_levels[] = {
1114                 { "quiet"  , AV_LOG_QUIET   },
1115                 { "panic"  , AV_LOG_PANIC   },
1116                 { "fatal"  , AV_LOG_FATAL   },
1117                 { "error"  , AV_LOG_ERROR   },
1118                 { "warning", AV_LOG_WARNING },
1119                 { "info"   , AV_LOG_INFO    },
1120                 { "verbose", AV_LOG_VERBOSE },
1121                 { "debug"  , AV_LOG_DEBUG   },
1122         };
1123         for( int i=0; i<(int)(sizeof(log_levels)/sizeof(log_levels[0])); ++i ) {
1124                 if( !strcmp(log_levels[i].name, ap) ) {
1125                         av_log_set_level(log_levels[i].level);
1126                         return;
1127                 }
1128         }
1129         av_log_set_level(atoi(ap));
1130 }
1131
1132 double FFMPEG::to_secs(int64_t time, AVRational time_base)
1133 {
1134         double base_time = time == AV_NOPTS_VALUE ? 0 :
1135                 av_rescale_q(time, time_base, AV_TIME_BASE_Q);
1136         return base_time / AV_TIME_BASE;
1137 }
1138
1139 int FFMPEG::info(char *text, int len)
1140 {
1141         if( len <= 0 ) return 0;
1142 #define report(s...) do { int n = snprintf(cp,len,s); cp += n;  len -= n; } while(0)
1143         char *cp = text;
1144         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1145                 AVStream *st = fmt_ctx->streams[i];
1146                 AVCodecContext *avctx = st->codec;
1147                 report("stream %d,  id 0x%06x:\n", i, avctx->codec_id);
1148                 const AVCodecDescriptor *desc = avcodec_descriptor_get(avctx->codec_id);
1149                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1150                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
1151                         double frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
1152                         report("  video %s",desc ? desc->name : " (unkn)");
1153                         report(" %dx%d %5.2f", avctx->width, avctx->height, frame_rate);
1154                         const char *pfn = av_get_pix_fmt_name(avctx->pix_fmt);
1155                         report(" pix %s\n", pfn ? pfn : "(unkn)");
1156                         double secs = to_secs(st->duration, st->time_base);
1157                         int64_t length = secs * frame_rate + 0.5;
1158                         report("    %jd frms %0.2f secs", length, secs);
1159                         int hrs = secs/3600;  secs -= hrs*3600;
1160                         int mins = secs/60;  secs -= mins*60;
1161                         report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1162
1163                 }
1164                 else if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1165                         int sample_rate = avctx->sample_rate;
1166                         const char *fmt = av_get_sample_fmt_name(avctx->sample_fmt);
1167                         report("  audio %s",desc ? desc->name : " (unkn)");
1168                         report(" %dch %s %d",avctx->channels, fmt, sample_rate);
1169                         int sample_bits = av_get_bits_per_sample(avctx->codec_id);
1170                         report(" %dbits\n", sample_bits);
1171                         double secs = to_secs(st->duration, st->time_base);
1172                         int64_t length = secs * sample_rate + 0.5;
1173                         report("    %jd smpl %0.2f secs", length, secs);
1174                         int hrs = secs/3600;  secs -= hrs*3600;
1175                         int mins = secs/60;  secs -= mins*60;
1176                         report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1177                 }
1178                 else
1179                         report("  codec_type unknown\n");
1180         }
1181         report("\n");
1182         for( int i=0; i<(int)fmt_ctx->nb_programs; ++i ) {
1183                 report("program %d", i+1);
1184                 AVProgram *pgrm = fmt_ctx->programs[i];
1185                 for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j )
1186                         report(", %d", pgrm->stream_index[j]);
1187                 report("\n");
1188         }
1189         report("\n");
1190         AVDictionaryEntry *tag = 0;
1191         while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
1192                 report("%s=%s\n", tag->key, tag->value);
1193
1194         if( !len ) --cp;
1195         *cp = 0;
1196         return cp - text;
1197 #undef report
1198 }
1199
1200
1201 int FFMPEG::init_decoder(const char *filename)
1202 {
1203         ff_lock("FFMPEG::init_decoder");
1204         av_register_all();
1205         char file_opts[BCTEXTLEN];
1206         char *bp = strrchr(strcpy(file_opts, filename), '/');
1207         char *sp = strrchr(!bp ? file_opts : bp, '.');
1208         FILE *fp = 0;
1209         if( sp ) {
1210                 strcpy(sp, ".opts");
1211                 fp = fopen(file_opts, "r");
1212         }
1213         if( fp ) {
1214                 read_options(fp, file_opts, opts);
1215                 fclose(fp);
1216         }
1217         else
1218                 load_options("decode.opts", opts);
1219         AVDictionary *fopts = 0;
1220         av_dict_copy(&fopts, opts, 0);
1221         int ret = avformat_open_input(&fmt_ctx, filename, NULL, &fopts);
1222         av_dict_free(&fopts);
1223         if( ret >= 0 )
1224                 ret = avformat_find_stream_info(fmt_ctx, NULL);
1225         if( !ret ) {
1226                 decoding = -1;
1227         }
1228         ff_unlock();
1229         return !ret ? 0 : 1;
1230 }
1231
1232 int FFMPEG::open_decoder()
1233 {
1234         struct stat st;
1235         if( stat(fmt_ctx->filename, &st) < 0 ) {
1236                 eprintf("FFMPEG::open_decoder: can't stat file: %s\n",
1237                         fmt_ctx->filename);
1238                 return 1;
1239         }
1240
1241         int64_t file_bits = 8 * st.st_size;
1242         if( !fmt_ctx->bit_rate && opt_duration > 0 )
1243                 fmt_ctx->bit_rate = file_bits / opt_duration;
1244
1245         int estimated = 0;
1246         if( fmt_ctx->bit_rate > 0 ) {
1247                 for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1248                         AVStream *st = fmt_ctx->streams[i];
1249                         if( st->duration != AV_NOPTS_VALUE ) continue;
1250                         if( st->time_base.num > INT64_MAX / fmt_ctx->bit_rate ) continue;
1251                         st->duration = av_rescale(file_bits, st->time_base.den,
1252                                 fmt_ctx->bit_rate * (int64_t) st->time_base.num);
1253                         estimated = 1;
1254                 }
1255         }
1256         if( estimated )
1257                 printf("FFMPEG::open_decoder: some stream times estimated\n");
1258
1259         ff_lock("FFMPEG::open_decoder");
1260         int bad_time = 0;
1261         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1262                 AVStream *st = fmt_ctx->streams[i];
1263                 if( st->duration == AV_NOPTS_VALUE ) bad_time = 1;
1264                 AVCodecContext *avctx = st->codec;
1265                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1266                         has_video = 1;
1267                         FFVideoStream *vid = new FFVideoStream(this, st, i);
1268                         int vidx = ffvideo.size();
1269                         vstrm_index.append(ffidx(vidx, 0));
1270                         ffvideo.append(vid);
1271                         vid->width = avctx->width;
1272                         vid->height = avctx->height;
1273                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
1274                         vid->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
1275                         double secs = to_secs(st->duration, st->time_base);
1276                         vid->length = secs * vid->frame_rate;
1277                         vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den;
1278                         vid->nudge = st->start_time;
1279                         vid->reading = -1;
1280                         if( opt_video_filter )
1281                                 vid->create_filter(opt_video_filter, avctx,avctx);
1282                 }
1283                 else if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1284                         has_audio = 1;
1285                         FFAudioStream *aud = new FFAudioStream(this, st, i);
1286                         int aidx = ffaudio.size();
1287                         ffaudio.append(aud);
1288                         aud->channel0 = astrm_index.size();
1289                         aud->channels = avctx->channels;
1290                         for( int ch=0; ch<aud->channels; ++ch )
1291                                 astrm_index.append(ffidx(aidx, ch));
1292                         aud->sample_rate = avctx->sample_rate;
1293                         double secs = to_secs(st->duration, st->time_base);
1294                         aud->length = secs * aud->sample_rate;
1295                         if( avctx->sample_fmt != AV_SAMPLE_FMT_FLT ) {
1296                                 uint64_t layout = av_get_default_channel_layout(avctx->channels);
1297                                 if( !layout ) layout = ((uint64_t)1<<aud->channels) - 1;
1298                                 aud->resample_context = swr_alloc_set_opts(NULL,
1299                                         layout, AV_SAMPLE_FMT_FLT, avctx->sample_rate,
1300                                         layout, avctx->sample_fmt, avctx->sample_rate,
1301                                         0, NULL);
1302                                 swr_init(aud->resample_context);
1303                         }
1304                         aud->nudge = st->start_time;
1305                         aud->reading = -1;
1306                         if( opt_audio_filter )
1307                                 aud->create_filter(opt_audio_filter, avctx,avctx);
1308                 }
1309         }
1310         if( bad_time )
1311                 printf("FFMPEG::open_decoder: some stream have bad times\n");
1312         ff_unlock();
1313         return 0;
1314 }
1315
1316
1317 int FFMPEG::init_encoder(const char *filename)
1318 {
1319         int fd = ::open(filename,O_WRONLY);
1320         if( fd < 0 ) fd = open(filename,O_WRONLY+O_CREAT,0666);
1321         if( fd < 0 ) {
1322                 eprintf("FFMPEG::init_encoder: bad file path: %s\n", filename);
1323                 return 1;
1324         }
1325         ::close(fd);
1326         int ret = get_file_format();
1327         if( ret > 0 ) {
1328                 eprintf("FFMPEG::init_encoder: bad file format: %s\n", filename);
1329                 return 1;
1330         }
1331         if( ret < 0 ) {
1332                 eprintf("FFMPEG::init_encoder: mismatch audio/video file format: %s\n", filename);
1333                 return 1;
1334         }
1335         ff_lock("FFMPEG::init_encoder");
1336         av_register_all();
1337         avformat_alloc_output_context2(&fmt_ctx, 0, file_format, filename);
1338         if( !fmt_ctx ) {
1339                 eprintf("FFMPEG::init_encoder: failed: %s\n", filename);
1340                 ret = 1;
1341         }
1342         if( !ret ) {
1343                 encoding = -1;
1344                 load_options("encode.opts", opts);
1345         }
1346         ff_unlock();
1347         start_muxer();
1348         return ret;
1349 }
1350
1351 int FFMPEG::open_encoder(const char *type, const char *spec)
1352 {
1353
1354         Asset *asset = file_base->asset;
1355         char *filename = asset->path;
1356         AVDictionary *sopts = 0;
1357         av_dict_copy(&sopts, opts, 0);
1358         char option_path[BCTEXTLEN];
1359         set_option_path(option_path, "%s/%s.opts", type, type);
1360         read_options(option_path, sopts);
1361         get_option_path(option_path, type, spec);
1362         char format_name[BCSTRLEN], codec_name[BCTEXTLEN];
1363         char bsfilter[BCSTRLEN], bsargs[BCTEXTLEN];
1364         if( get_encoder(option_path, format_name, codec_name, bsfilter, bsargs) ) {
1365                 eprintf("FFMPEG::open_encoder: get_encoder failed %s:%s\n",
1366                         option_path, filename);
1367                 return 1;
1368         }
1369
1370         int ret = 0;
1371         ff_lock("FFMPEG::open_encoder");
1372         FFStream *fst = 0;
1373         AVStream *st = 0;
1374
1375         const AVCodecDescriptor *codec_desc = 0;
1376         AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
1377         if( !codec ) {
1378                 eprintf("FFMPEG::open_encoder: cant find codec %s:%s\n",
1379                         codec_name, filename);
1380                 ret = 1;
1381         }
1382         if( !ret ) {
1383                 codec_desc = avcodec_descriptor_get(codec->id);
1384                 if( !codec_desc ) {
1385                         eprintf("FFMPEG::open_encoder: unknown codec %s:%s\n",
1386                                 codec_name, filename);
1387                         ret = 1;
1388                 }
1389         }
1390         if( !ret ) {
1391                 st = avformat_new_stream(fmt_ctx, 0);
1392                 if( !st ) {
1393                         eprintf("FFMPEG::open_encoder: cant create stream %s:%s\n",
1394                                 codec_name, filename);
1395                         ret = 1;
1396                 }
1397         }
1398         if( !ret ) {
1399                 AVCodecContext *ctx = st->codec;
1400                 switch( codec_desc->type ) {
1401                 case AVMEDIA_TYPE_AUDIO: {
1402                         if( has_audio ) {
1403                                 eprintf("FFMPEG::open_encoder: duplicate audio %s:%s\n",
1404                                         codec_name, filename);
1405                                 ret = 1;
1406                                 break;
1407                         }
1408                         has_audio = 1;
1409                         if( scan_options(asset->ff_audio_options, sopts) ) {
1410                                 eprintf("FFMPEG::open_encoder: bad audio options %s:%s\n",
1411                                         codec_name, filename);
1412                                 ret = 1;
1413                                 break;
1414                         }
1415                         if( asset->ff_audio_bitrate > 0 ) {
1416                                 char arg[BCSTRLEN];
1417                                 sprintf(arg, "%d", asset->ff_audio_bitrate);
1418                                 av_dict_set(&sopts, "b", arg, 0);
1419                         }
1420                         int aidx = ffaudio.size();
1421                         int idx = aidx + ffvideo.size();
1422                         FFAudioStream *aud = new FFAudioStream(this, st, idx);
1423                         ffaudio.append(aud);  fst = aud;
1424                         aud->sample_rate = asset->sample_rate;
1425                         ctx->channels = aud->channels = asset->channels;
1426                         for( int ch=0; ch<aud->channels; ++ch )
1427                                 astrm_index.append(ffidx(aidx, ch));
1428                         ctx->channel_layout =  av_get_default_channel_layout(ctx->channels);
1429                         ctx->sample_rate = check_sample_rate(codec, asset->sample_rate);
1430                         if( !ctx->sample_rate ) {
1431                                 eprintf("FFMPEG::open_audio_encode:"
1432                                         " check_sample_rate failed %s\n", filename);
1433                                 ret = 1;
1434                                 break;
1435                         }
1436                         ctx->time_base = st->time_base = (AVRational){1, aud->sample_rate};
1437                         ctx->sample_fmt = codec->sample_fmts[0];
1438                         uint64_t layout = av_get_default_channel_layout(ctx->channels);
1439                         aud->resample_context = swr_alloc_set_opts(NULL,
1440                                 layout, ctx->sample_fmt, aud->sample_rate,
1441                                 layout, AV_SAMPLE_FMT_FLT, ctx->sample_rate,
1442                                 0, NULL);
1443                         swr_init(aud->resample_context);
1444                         aud->writing = -1;
1445                         break; }
1446                 case AVMEDIA_TYPE_VIDEO: {
1447                         if( has_video ) {
1448                                 eprintf("FFMPEG::open_encoder: duplicate video %s:%s\n",
1449                                         codec_name, filename);
1450                                 ret = 1;
1451                                 break;
1452                         }
1453                         has_video = 1;
1454                         if( scan_options(asset->ff_video_options, sopts) ) {
1455                                 eprintf("FFMPEG::open_encoder: bad video options %s:%s\n",
1456                                         codec_name, filename);
1457                                 ret = 1;
1458                                 break;
1459                         }
1460                         if( asset->ff_video_bitrate > 0 ) {
1461                                 char arg[BCSTRLEN];
1462                                 sprintf(arg, "%d", asset->ff_video_bitrate);
1463                                 av_dict_set(&sopts, "b", arg, 0);
1464                         }
1465                         else if( asset->ff_video_quality > 0 ) {
1466                                 ctx->global_quality = asset->ff_video_quality * FF_QP2LAMBDA;
1467                                 ctx->qmin    = ctx->qmax =  asset->ff_video_quality;
1468                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
1469                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
1470                                 ctx->flags |= CODEC_FLAG_QSCALE;
1471                                 char arg[BCSTRLEN];
1472                                 av_dict_set(&sopts, "flags", "+qscale", 0);
1473                                 sprintf(arg, "%d", asset->ff_video_quality);
1474                                 av_dict_set(&sopts, "qscale", arg, 0);
1475                                 sprintf(arg, "%d", ctx->global_quality);
1476                                 av_dict_set(&sopts, "global_quality", arg, 0);
1477                         }
1478                         int vidx = ffvideo.size();
1479                         int idx = vidx + ffaudio.size();
1480                         FFVideoStream *vid = new FFVideoStream(this, st, idx);
1481                         vstrm_index.append(ffidx(vidx, 0));
1482                         ffvideo.append(vid);  fst = vid;
1483                         vid->width = asset->width;
1484                         ctx->width = (vid->width+3) & ~3;
1485                         vid->height = asset->height;
1486                         ctx->height = (vid->height+3) & ~3;
1487                         vid->frame_rate = asset->frame_rate;
1488                         ctx->sample_aspect_ratio = to_sample_aspect_ratio(asset->aspect_ratio);
1489                         ctx->pix_fmt = codec->pix_fmts ? codec->pix_fmts[0] : AV_PIX_FMT_YUV420P;
1490                         AVRational frame_rate = check_frame_rate(codec, vid->frame_rate);
1491                         if( !frame_rate.num || !frame_rate.den ) {
1492                                 eprintf("FFMPEG::open_audio_encode:"
1493                                         " check_frame_rate failed %s\n", filename);
1494                                 ret = 1;
1495                                 break;
1496                         }
1497                         ctx->time_base = (AVRational) { frame_rate.den, frame_rate.num };
1498                         st->time_base = ctx->time_base;
1499                         vid->writing = -1;
1500                         break; }
1501                 default:
1502                         eprintf("FFMPEG::open_encoder: not audio/video, %s:%s\n",
1503                                 codec_name, filename);
1504                         ret = 1;
1505                 }
1506         }
1507         if( !ret ) {
1508                 ret = avcodec_open2(st->codec, codec, &sopts);
1509                 if( ret < 0 ) {
1510                         ff_err(ret,"FFMPEG::open_encoder");
1511                         eprintf("FFMPEG::open_encoder: open failed %s:%s\n",
1512                                 codec_name, filename);
1513                         ret = 1;
1514                 }
1515                 else
1516                         ret = 0;
1517         }
1518         if( !ret ) {
1519                 if( fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER )
1520                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
1521                 if( fst && bsfilter[0] )
1522                         fst->add_bsfilter(bsfilter, !bsargs[0] ? 0 : bsargs);
1523         }
1524
1525         ff_unlock();
1526         av_dict_free(&sopts);
1527         return ret;
1528 }
1529
1530 int FFMPEG::close_encoder()
1531 {
1532         stop_muxer();
1533         if( encoding > 0 ) {
1534                 av_write_trailer(fmt_ctx);
1535                 if( !(fmt_ctx->flags & AVFMT_NOFILE) )
1536                         avio_closep(&fmt_ctx->pb);
1537         }
1538         encoding = 0;
1539         return 0;
1540 }
1541
1542 int FFMPEG::decode_activate()
1543 {
1544         if( decoding < 0 ) {
1545                 decoding = 0;
1546                 int npgrms = fmt_ctx->nb_programs;
1547                 for( int i=0; i<npgrms; ++i ) {
1548                         AVProgram *pgrm = fmt_ctx->programs[i];
1549                         // first start time video stream
1550                         int64_t vstart_time = -1;
1551                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1552                                 int st_idx = pgrm->stream_index[j];
1553                                 AVStream *st = fmt_ctx->streams[st_idx];
1554                                 AVCodecContext *avctx = st->codec;
1555                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1556                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1557                                         vstart_time = st->start_time;
1558                                         break;
1559                                 }
1560                         }
1561                         // max start time audio stream
1562                         int64_t astart_time = -1;
1563                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1564                                 int st_idx = pgrm->stream_index[j];
1565                                 AVStream *st = fmt_ctx->streams[st_idx];
1566                                 AVCodecContext *avctx = st->codec;
1567                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1568                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1569                                         if( astart_time > st->start_time ) continue;
1570                                         astart_time = st->start_time;
1571                                 }
1572                         }
1573                         if( astart_time < 0 || vstart_time < 0 ) continue;
1574                         // match program streams to max start_time
1575                         int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1576                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1577                                 int st_idx = pgrm->stream_index[j];
1578                                 AVStream *st = fmt_ctx->streams[st_idx];
1579                                 AVCodecContext *avctx = st->codec;
1580                                 if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1581                                         for( int k=0; k<ffaudio.size(); ++k ) {
1582                                                 if( ffaudio[k]->idx == st_idx )
1583                                                         ffaudio[k]->nudge = nudge;
1584                                         }
1585                                 }
1586                                 else if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1587                                         for( int k=0; k<ffvideo.size(); ++k ) {
1588                                                 if( ffvideo[k]->idx == st_idx )
1589                                                         ffvideo[k]->nudge = nudge;
1590                                         }
1591                                 }
1592                         }
1593                 }
1594                 int64_t vstart_time = 0, astart_time = 0;
1595                 int nstreams = fmt_ctx->nb_streams;
1596                 for( int i=0; i<nstreams; ++i ) {
1597                         AVStream *st = fmt_ctx->streams[i];
1598                         AVCodecContext *avctx = st->codec;
1599                         switch( avctx->codec_type ) {
1600                         case AVMEDIA_TYPE_VIDEO:
1601                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1602                                 if( vstart_time >= st->start_time ) continue;
1603                                 vstart_time = st->start_time;
1604                                 break;
1605                         case AVMEDIA_TYPE_AUDIO:
1606                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1607                                 if( astart_time >= st->start_time ) continue;
1608                                 astart_time = st->start_time;
1609                         default: break;
1610                         }
1611                 }
1612                 int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1613                 for( int k=0; k<ffvideo.size(); ++k ) {
1614                         if( ffvideo[k]->nudge != AV_NOPTS_VALUE ) continue;
1615                         ffvideo[k]->nudge = nudge;
1616                 }
1617                 for( int k=0; k<ffaudio.size(); ++k ) {
1618                         if( ffaudio[k]->nudge != AV_NOPTS_VALUE ) continue;
1619                         ffaudio[k]->nudge = nudge;
1620                 }
1621                 decoding = 1;
1622         }
1623         return decoding;
1624 }
1625
1626 int FFMPEG::encode_activate()
1627 {
1628         if( encoding < 0 ) {
1629                 encoding = 0;
1630                 if( !(fmt_ctx->flags & AVFMT_NOFILE) &&
1631                     avio_open(&fmt_ctx->pb, fmt_ctx->filename, AVIO_FLAG_WRITE) < 0 ) {
1632                         fprintf(stderr, "FFMPEG::encode_activate: err opening : %s\n",
1633                                 fmt_ctx->filename);
1634                         return 1;
1635                 }
1636
1637                 AVDictionary *fopts = 0;
1638                 char option_path[BCTEXTLEN];
1639                 set_option_path(option_path, "format/%s", file_format);
1640                 read_options(option_path, fopts);
1641                 int ret = avformat_write_header(fmt_ctx, &fopts);
1642                 av_dict_free(&fopts);
1643                 if( ret < 0 ) {
1644                         fprintf(stderr, "FFMPEG::encode_activate: write header failed %s\n",
1645                                 fmt_ctx->filename);
1646                         return 1;
1647                 }
1648                 encoding = 1;
1649         }
1650         return encoding;
1651 }
1652
1653 int FFMPEG::audio_seek(int stream, int64_t pos)
1654 {
1655         int aidx = astrm_index[stream].st_idx;
1656         FFAudioStream *aud = ffaudio[aidx];
1657         aud->audio_seek(pos);
1658         aud->seek_pos = aud->curr_pos = pos;
1659         return 0;
1660 }
1661
1662 int FFMPEG::video_seek(int stream, int64_t pos)
1663 {
1664         int vidx = vstrm_index[stream].st_idx;
1665         FFVideoStream *vid = ffvideo[vidx];
1666         vid->video_seek(pos);
1667         vid->seek_pos = vid->curr_pos = pos;
1668         return 0;
1669 }
1670
1671
1672 int FFMPEG::decode(int chn, int64_t pos, double *samples, int len)
1673 {
1674         if( !has_audio || chn >= astrm_index.size() ) return -1;
1675         int aidx = astrm_index[chn].st_idx;
1676         FFAudioStream *aud = ffaudio[aidx];
1677         if( aud->load(pos, len) < len ) return -1;
1678         int ch = astrm_index[chn].st_ch;
1679         return aud->read(samples,len,ch);
1680 }
1681
1682 int FFMPEG::decode(int layer, int64_t pos, VFrame *vframe)
1683 {
1684         if( !has_video || layer >= vstrm_index.size() ) return -1;
1685         int vidx = vstrm_index[layer].st_idx;
1686         FFVideoStream *vid = ffvideo[vidx];
1687         return vid->load(vframe, pos);
1688 }
1689
1690 int FFMPEG::encode(int stream, double **samples, int len)
1691 {
1692         FFAudioStream *aud = ffaudio[stream];
1693         return aud->encode(samples, len);
1694 }
1695
1696
1697 int FFMPEG::encode(int stream, VFrame *frame)
1698 {
1699         FFVideoStream *vid = ffvideo[stream];
1700         return vid->encode(frame);
1701 }
1702
1703 void FFMPEG::start_muxer()
1704 {
1705         if( !running() ) {
1706                 done = 0;
1707                 start();
1708         }
1709 }
1710
1711 void FFMPEG::stop_muxer()
1712 {
1713         if( running() ) {
1714                 done = 1;
1715                 mux_lock->unlock();
1716                 join();
1717         }
1718 }
1719
1720 void FFMPEG::flow_off()
1721 {
1722         if( !flow ) return;
1723         flow_lock->lock("FFMPEG::flow_off");
1724         flow = 0;
1725 }
1726
1727 void FFMPEG::flow_on()
1728 {
1729         if( flow ) return;
1730         flow = 1;
1731         flow_lock->unlock();
1732 }
1733
1734 void FFMPEG::flow_ctl()
1735 {
1736         while( !flow ) {
1737                 flow_lock->lock("FFMPEG::flow_ctl");
1738                 flow_lock->unlock();
1739         }
1740 }
1741
1742 int FFMPEG::mux_audio(FFrame *frm)
1743 {
1744         FFPacket pkt;
1745         AVStream *st = frm->fst->st;
1746         AVCodecContext *ctx = st->codec;
1747         AVFrame *frame = *frm;
1748         AVRational tick_rate = {1, ctx->sample_rate};
1749         frame->pts = av_rescale_q(frm->position, tick_rate, ctx->time_base);
1750         int got_packet = 0;
1751         int ret = avcodec_encode_audio2(ctx, pkt, frame, &got_packet);
1752         if( ret >= 0 && got_packet ) {
1753                 frm->fst->bs_filter(pkt);
1754                 av_packet_rescale_ts(pkt, ctx->time_base, st->time_base);
1755                 pkt->stream_index = st->index;
1756                 ret = av_interleaved_write_frame(fmt_ctx, pkt);
1757         }
1758         if( ret < 0 )
1759                 ff_err(ret, "FFMPEG::mux_audio");
1760         return ret >= 0 ? 0 : 1;
1761 }
1762
1763 int FFMPEG::mux_video(FFrame *frm)
1764 {
1765         FFPacket pkt;
1766         AVStream *st = frm->fst->st;
1767         AVFrame *frame = *frm;
1768         frame->pts = frm->position;
1769         int ret = 1, got_packet = 0;
1770         if( fmt_ctx->oformat->flags & AVFMT_RAWPICTURE ) {
1771                 /* a hack to avoid data copy with some raw video muxers */
1772                 pkt->flags |= AV_PKT_FLAG_KEY;
1773                 pkt->stream_index  = st->index;
1774                 AVPicture *picture = (AVPicture *)frame;
1775                 pkt->data = (uint8_t *)picture;
1776                 pkt->size = sizeof(AVPicture);
1777                 pkt->pts = pkt->dts = frame->pts;
1778                 got_packet = 1;
1779         }
1780         else
1781                 ret = avcodec_encode_video2(st->codec, pkt, frame, &got_packet);
1782         if( ret >= 0 && got_packet ) {
1783                 frm->fst->bs_filter(pkt);
1784                 av_packet_rescale_ts(pkt, st->codec->time_base, st->time_base);
1785                 pkt->stream_index = st->index;
1786                 ret = av_interleaved_write_frame(fmt_ctx, pkt);
1787         }
1788         if( ret < 0 )
1789                 ff_err(ret, "FFMPEG::mux_video");
1790         return ret >= 0 ? 0 : 1;
1791 }
1792
1793 void FFMPEG::mux()
1794 {
1795         for(;;) {
1796                 double atm = -1, vtm = -1;
1797                 FFrame *afrm = 0, *vfrm = 0;
1798                 int demand = 0;
1799                 for( int i=0; i<ffaudio.size(); ++i ) {  // earliest audio
1800                         FFStream *fst = ffaudio[i];
1801                         if( fst->frm_count < 3 ) { demand = 1; flow_on(); }
1802                         FFrame *frm = fst->frms.first;
1803                         if( !frm ) { if( !done ) return; continue; }
1804                         double tm = to_secs(frm->position, fst->st->codec->time_base);
1805                         if( atm < 0 || tm < atm ) { atm = tm;  afrm = frm; }
1806                 }
1807                 for( int i=0; i<ffvideo.size(); ++i ) {  // earliest video
1808                         FFStream *fst = ffvideo[i];
1809                         if( fst->frm_count < 2 ) { demand = 1; flow_on(); }
1810                         FFrame *frm = fst->frms.first;
1811                         if( !frm ) { if( !done ) return; continue; }
1812                         double tm = to_secs(frm->position, fst->st->codec->time_base);
1813                         if( vtm < 0 || tm < vtm ) { vtm = tm;  vfrm = frm; }
1814                 }
1815                 if( !demand ) flow_off();
1816                 if( !afrm && !vfrm ) break;
1817                 int v = !afrm ? -1 : !vfrm ? 1 : av_compare_ts(
1818                         vfrm->position, vfrm->fst->st->codec->time_base,
1819                         afrm->position, afrm->fst->st->codec->time_base);
1820                 FFrame *frm = v <= 0 ? vfrm : afrm;
1821                 if( frm == afrm ) mux_audio(frm);
1822                 if( frm == vfrm ) mux_video(frm);
1823                 frm->dequeue();
1824                 delete frm;
1825         }
1826 }
1827
1828 void FFMPEG::run()
1829 {
1830         while( !done ) {
1831                 mux_lock->lock("FFMPEG::run");
1832                 if( !done ) mux();
1833         }
1834         mux();
1835 }
1836
1837
1838 int FFMPEG::ff_total_audio_channels()
1839 {
1840         return astrm_index.size();
1841 }
1842
1843 int FFMPEG::ff_total_astreams()
1844 {
1845         return ffaudio.size();
1846 }
1847
1848 int FFMPEG::ff_audio_channels(int stream)
1849 {
1850         return ffaudio[stream]->channels;
1851 }
1852
1853 int FFMPEG::ff_sample_rate(int stream)
1854 {
1855         return ffaudio[stream]->sample_rate;
1856 }
1857
1858 const char* FFMPEG::ff_audio_format(int stream)
1859 {
1860         AVStream *st = ffaudio[stream]->st;
1861         AVCodecID id = st->codec->codec_id;
1862         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
1863         return desc ? desc->name : "Unknown";
1864 }
1865
1866 int FFMPEG::ff_audio_pid(int stream)
1867 {
1868         return ffaudio[stream]->st->id;
1869 }
1870
1871 int64_t FFMPEG::ff_audio_samples(int stream)
1872 {
1873         return ffaudio[stream]->length;
1874 }
1875
1876 // find audio astream/channels with this program,
1877 //   or all program audio channels (astream=-1)
1878 int FFMPEG::ff_audio_for_video(int vstream, int astream, int64_t &channel_mask)
1879 {
1880         channel_mask = 0;
1881         int pidx = -1;
1882         int vidx = ffvideo[vstream]->idx;
1883         // find first program with this video stream
1884         for( int i=0; pidx<0 && i<(int)fmt_ctx->nb_programs; ++i ) {
1885                 AVProgram *pgrm = fmt_ctx->programs[i];
1886                 for( int j=0;  pidx<0 && j<(int)pgrm->nb_stream_indexes; ++j ) {
1887                         int st_idx = pgrm->stream_index[j];
1888                         AVStream *st = fmt_ctx->streams[st_idx];
1889                         if( st->codec->codec_type != AVMEDIA_TYPE_VIDEO ) continue;
1890                         if( st_idx == vidx ) pidx = i;
1891                 }
1892         }
1893         if( pidx < 0 ) return -1;
1894         int ret = -1;
1895         int64_t channels = 0;
1896         AVProgram *pgrm = fmt_ctx->programs[pidx];
1897         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1898                 int aidx = pgrm->stream_index[j];
1899                 AVStream *st = fmt_ctx->streams[aidx];
1900                 if( st->codec->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
1901                 if( astream > 0 ) { --astream;  continue; }
1902                 int astrm = -1;
1903                 for( int i=0; astrm<0 && i<ffaudio.size(); ++i )
1904                         if( ffaudio[i]->idx == aidx ) astrm = i;
1905                 if( astrm >= 0 ) {
1906                         if( ret < 0 ) ret = astrm;
1907                         int64_t mask = (1 << ffaudio[astrm]->channels) - 1;
1908                         channels |= mask << ffaudio[astrm]->channel0;
1909                 }
1910                 if( !astream ) break;
1911         }
1912         channel_mask = channels;
1913         return ret;
1914 }
1915
1916
1917 int FFMPEG::ff_total_video_layers()
1918 {
1919         return vstrm_index.size();
1920 }
1921
1922 int FFMPEG::ff_total_vstreams()
1923 {
1924         return ffvideo.size();
1925 }
1926
1927 int FFMPEG::ff_video_width(int stream)
1928 {
1929         return ffvideo[stream]->width;
1930 }
1931
1932 int FFMPEG::ff_video_height(int stream)
1933 {
1934         return ffvideo[stream]->height;
1935 }
1936
1937 int FFMPEG::ff_set_video_width(int stream, int width)
1938 {
1939         int w = ffvideo[stream]->width;
1940         ffvideo[stream]->width = width;
1941         return w;
1942 }
1943
1944 int FFMPEG::ff_set_video_height(int stream, int height)
1945 {
1946         int h = ffvideo[stream]->height;
1947         ffvideo[stream]->height = height;
1948         return h;
1949 }
1950
1951 int FFMPEG::ff_coded_width(int stream)
1952 {
1953         AVStream *st = ffvideo[stream]->st;
1954         return st->codec->coded_width;
1955 }
1956
1957 int FFMPEG::ff_coded_height(int stream)
1958 {
1959         AVStream *st = ffvideo[stream]->st;
1960         return st->codec->coded_height;
1961 }
1962
1963 float FFMPEG::ff_aspect_ratio(int stream)
1964 {
1965         return ffvideo[stream]->aspect_ratio;
1966 }
1967
1968 const char* FFMPEG::ff_video_format(int stream)
1969 {
1970         AVStream *st = ffvideo[stream]->st;
1971         AVCodecID id = st->codec->codec_id;
1972         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
1973         return desc ? desc->name : "Unknown";
1974 }
1975
1976 double FFMPEG::ff_frame_rate(int stream)
1977 {
1978         return ffvideo[stream]->frame_rate;
1979 }
1980
1981 int64_t FFMPEG::ff_video_frames(int stream)
1982 {
1983         return ffvideo[stream]->length;
1984 }
1985
1986 int FFMPEG::ff_video_pid(int stream)
1987 {
1988         return ffvideo[stream]->st->id;
1989 }
1990
1991
1992 int FFMPEG::ff_cpus()
1993 {
1994         return file_base->file->cpus;
1995 }
1996
1997 int FFVideoStream::create_filter(const char *filter_spec,
1998                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
1999 {
2000         avfilter_register_all();
2001         filter_graph = avfilter_graph_alloc();
2002         AVFilter *buffersrc = avfilter_get_by_name("buffer");
2003         AVFilter *buffersink = avfilter_get_by_name("buffersink");
2004
2005         int ret = 0;  char args[BCTEXTLEN];
2006         snprintf(args, sizeof(args),
2007                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
2008                 src_ctx->width, src_ctx->height, src_ctx->pix_fmt,
2009                 st->time_base.num, st->time_base.den,
2010                 src_ctx->sample_aspect_ratio.num, src_ctx->sample_aspect_ratio.den);
2011         if( ret >= 0 )
2012                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2013                         args, NULL, filter_graph);
2014         if( ret >= 0 )
2015                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2016                         NULL, NULL, filter_graph);
2017         if( ret >= 0 )
2018                 ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
2019                         (uint8_t*)&sink_ctx->pix_fmt, sizeof(sink_ctx->pix_fmt),
2020                         AV_OPT_SEARCH_CHILDREN);
2021         if( ret < 0 )
2022                 ff_err(ret, "FFVideoStream::create_filter");
2023         else
2024                 ret = FFStream::create_filter(filter_spec);
2025         return ret >= 0 ? 0 : 1;
2026 }
2027
2028 int FFAudioStream::create_filter(const char *filter_spec,
2029                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
2030 {
2031         avfilter_register_all();
2032         filter_graph = avfilter_graph_alloc();
2033         AVFilter *buffersrc = avfilter_get_by_name("abuffer");
2034         AVFilter *buffersink = avfilter_get_by_name("abuffersink");
2035         int ret = 0;  char args[BCTEXTLEN];
2036         snprintf(args, sizeof(args),
2037                 "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%jx",
2038                 st->time_base.num, st->time_base.den, src_ctx->sample_rate,
2039                 av_get_sample_fmt_name(src_ctx->sample_fmt), src_ctx->channel_layout);
2040         if( ret >= 0 )
2041                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2042                         args, NULL, filter_graph);
2043         if( ret >= 0 )
2044                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2045                         NULL, NULL, filter_graph);
2046         if( ret >= 0 )
2047                 ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
2048                         (uint8_t*)&sink_ctx->sample_fmt, sizeof(sink_ctx->sample_fmt),
2049                         AV_OPT_SEARCH_CHILDREN);
2050         if( ret >= 0 )
2051                 ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
2052                         (uint8_t*)&sink_ctx->channel_layout,
2053                         sizeof(sink_ctx->channel_layout), AV_OPT_SEARCH_CHILDREN);
2054         if( ret >= 0 )
2055                 ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
2056                         (uint8_t*)&sink_ctx->sample_rate, sizeof(sink_ctx->sample_rate),
2057                         AV_OPT_SEARCH_CHILDREN);
2058         if( ret < 0 )
2059                 ff_err(ret, "FFAudioStream::create_filter");
2060         else
2061                 ret = FFStream::create_filter(filter_spec);
2062         return ret >= 0 ? 0 : 1;
2063 }
2064
2065 int FFStream::create_filter(const char *filter_spec)
2066 {
2067         /* Endpoints for the filter graph. */
2068         AVFilterInOut *outputs = avfilter_inout_alloc();
2069         outputs->name = av_strdup("in");
2070         outputs->filter_ctx = buffersrc_ctx;
2071         outputs->pad_idx = 0;
2072         outputs->next = 0;
2073
2074         AVFilterInOut *inputs  = avfilter_inout_alloc();
2075         inputs->name = av_strdup("out");
2076         inputs->filter_ctx = buffersink_ctx;
2077         inputs->pad_idx = 0;
2078         inputs->next = 0;
2079
2080         int ret = !outputs->name || !inputs->name ? -1 : 0;
2081         if( ret >= 0 )
2082                 ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
2083                         &inputs, &outputs, NULL);
2084         if( ret >= 0 )
2085                 ret = avfilter_graph_config(filter_graph, NULL);
2086
2087         if( ret < 0 )
2088                 ff_err(ret, "FFStream::create_filter");
2089         avfilter_inout_free(&inputs);
2090         avfilter_inout_free(&outputs);
2091         return ret;
2092 }
2093
2094 void FFStream::add_bsfilter(const char *bsf, const char *ap)
2095 {
2096         bsfilter.append(new BSFilter(bsf,ap));
2097 }
2098
2099 int FFStream::bs_filter(AVPacket *pkt)
2100 {
2101         if( !bsfilter.size() ) return 0;
2102         av_packet_split_side_data(pkt);
2103
2104         int ret = 0;
2105         for( int i=0; i<bsfilter.size(); ++i ) {
2106                 AVPacket bspkt = *pkt;
2107                 ret = av_bitstream_filter_filter(bsfilter[i]->bsfc,
2108                          st->codec, bsfilter[i]->args, &bspkt.data, &bspkt.size,
2109                          pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY);
2110                 if( ret < 0 ) break;
2111                 int size = bspkt.size;
2112                 uint8_t *data = bspkt.data;
2113                 if( !ret && bspkt.data != pkt->data ) {
2114                         size = bspkt.size;
2115                         data = (uint8_t *)av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2116                         if( !data ) { ret = AVERROR(ENOMEM);  break; }
2117                         memcpy(data, bspkt.data, size);
2118                         memset(data+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2119                         ret = 1;
2120                 }
2121                 if( ret > 0 ) {
2122                         pkt->side_data = 0;  pkt->side_data_elems = 0;
2123                         av_free_packet(pkt);
2124                         ret = av_packet_from_data(&bspkt, data, size);
2125                         if( ret < 0 ) break;
2126                 }
2127                 *pkt = bspkt;
2128         }
2129         if( ret < 0 )
2130                 ff_err(ret,"FFStream::bs_filter");
2131         return ret;
2132 }
2133