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 "libdv.h"
  22 #include "libmjpeg.h"
  23 #include "mainerror.h"
  24 #include "mwindow.h"
  25 #include "vframe.h"
  26
  27
  28 #define VIDEO_INBUF_SIZE 0x10000
  29 #define AUDIO_INBUF_SIZE 0x10000
  30 #define VIDEO_REFILL_THRESH 0
  31 #define AUDIO_REFILL_THRESH 0x1000
  32
  33 Mutex FFMPEG::fflock("FFMPEG::fflock");
  34
  35 static void ff_err(int ret, const char *fmt, ...)
  36 {
  37         char msg[BCTEXTLEN];
  38         va_list ap;
  39         va_start(ap, fmt);
  40         vsnprintf(msg, sizeof(msg), fmt, ap);
  41         va_end(ap);
  42         char errmsg[BCSTRLEN];
  43         av_strerror(ret, errmsg, sizeof(errmsg));
  44         fprintf(stderr,_("%s  err: %s\n"),msg, errmsg);
  45 }
  46
  47 FFPacket::FFPacket()
  48 {
  49         init();
  50 }
  51
  52 FFPacket::~FFPacket()
  53 {
  54         av_free_packet(&pkt);
  55 }
  56
  57 void FFPacket::init()
  58 {
  59         av_init_packet(&pkt);
  60         pkt.data = 0; pkt.size = 0;
  61 }
  62
  63 FFrame::FFrame(FFStream *fst)
  64 {
  65         this->fst = fst;
  66         frm = av_frame_alloc();
  67         init = fst->init_frame(frm);
  68 }
  69
  70 FFrame::~FFrame()
  71 {
  72         av_frame_free(&frm);
  73 }
  74
  75 void FFrame::queue(int64_t pos)
  76 {
  77         position = pos;
  78         fst->queue(this);
  79 }
  80
  81 void FFrame::dequeue()
  82 {
  83         fst->dequeue(this);
  84 }
  85
  86 int FFAudioStream::read(float *fp, long len)
  87 {
  88         long n = len * nch;
  89         float *op = outp;
  90         while( n > 0 ) {
  91                 int k = lmt - op;
  92                 if( k > n ) k = n;
  93                 n -= k;
  94                 while( --k >= 0 ) *fp++ = *op++;
  95                 if( op >= lmt ) op = bfr;
  96         }
  97         return len;
  98 }
  99
 100 void FFAudioStream::realloc(long sz, int nch, long len)
 101 {
 102         long bsz = sz * nch;
 103         float *np = new float[bsz];
 104         inp = np + read(np, len) * nch;
 105         outp = np;
 106         lmt = np + bsz;
 107         this->nch = nch;
 108         this->sz = sz;
 109         delete [] bfr;  bfr = np;
 110 }
 111
 112 void FFAudioStream::realloc(long sz, int nch)
 113 {
 114         if( sz > this->sz || this->nch != nch ) {
 115                 long len = this->nch != nch ? 0 : curr_pos - seek_pos;
 116                 if( len > this->sz ) len = this->sz;
 117                 iseek(len);
 118                 realloc(sz, nch, len);
 119         }
 120 }
 121
 122 void FFAudioStream::reserve(long sz, int nch)
 123 {
 124         long len = (inp - outp) / nch;
 125         sz += len;
 126         if( sz > this->sz || this->nch != nch ) {
 127                 if( this->nch != nch ) len = 0;
 128                 realloc(sz, nch, len);
 129                 return;
 130         }
 131         if( (len*=nch) > 0 && bfr != outp )
 132                 memmove(bfr, outp, len*sizeof(*bfr));
 133         outp = bfr;
 134         inp = bfr + len;
 135 }
 136
 137 long FFAudioStream::used()
 138 {
 139         long len = inp>=outp ? inp-outp : inp-bfr + lmt-outp;
 140         return len / nch;
 141 }
 142 long FFAudioStream::avail()
 143 {
 144         float *in1 = inp+1;
 145         if( in1 >= lmt ) in1 = bfr;
 146         long len = outp >= in1 ? outp-in1 : outp-bfr + lmt-in1;
 147         return len / nch;
 148 }
 149 void FFAudioStream::reset() // clear bfr
 150 {
 151         inp = outp = bfr;
 152 }
 153
 154 void FFAudioStream::iseek(int64_t ofs)
 155 {
 156         outp = inp - ofs*nch;
 157         if( outp < bfr ) outp += sz*nch;
 158 }
 159
 160 float *FFAudioStream::get_outp(int ofs)
 161 {
 162         float *ret = outp;
 163         outp += ofs*nch;
 164         return ret;
 165 }
 166
 167 int64_t FFAudioStream::put_inp(int ofs)
 168 {
 169         inp += ofs*nch;
 170         return (inp-outp) / nch;
 171 }
 172
 173 int FFAudioStream::write(const float *fp, long len)
 174 {
 175         long n = len * nch;
 176         float *ip = inp;
 177         while( n > 0 ) {
 178                 int k = lmt - ip;
 179                 if( k > n ) k = n;
 180                 n -= k;
 181                 while( --k >= 0 ) *ip++ = *fp++;
 182                 if( ip >= lmt ) ip = bfr;
 183         }
 184         inp = ip;
 185         return len;
 186 }
 187
 188 int FFAudioStream::zero(long len)
 189 {
 190         long n = len * nch;
 191         float *ip = inp;
 192         while( n > 0 ) {
 193                 int k = lmt - ip;
 194                 if( k > n ) k = n;
 195                 n -= k;
 196                 while( --k >= 0 ) *ip++ = 0;
 197                 if( ip >= lmt ) ip = bfr;
 198         }
 199         inp = ip;
 200         return len;
 201 }
 202
 203 // does not advance outp
 204 int FFAudioStream::read(double *dp, long len, int ch)
 205 {
 206         long n = len;
 207         float *op = outp + ch;
 208         float *lmt1 = lmt + nch-1;
 209         while( n > 0 ) {
 210                 int k = (lmt1 - op) / nch;
 211                 if( k > n ) k = n;
 212                 n -= k;
 213                 while( --k >= 0 ) { *dp++ = *op;  op += nch; }
 214                 if( op >= lmt ) op -= sz*nch;
 215         }
 216         return len;
 217 }
 218
 219 // load linear buffer, no wrapping allowed, does not advance inp
 220 int FFAudioStream::write(const double *dp, long len, int ch)
 221 {
 222         long n = len;
 223         float *ip = inp + ch;
 224         while( --n >= 0 ) { *ip = *dp++;  ip += nch; }
 225         return len;
 226 }
 227
 228
 229 FFStream::FFStream(FFMPEG *ffmpeg, AVStream *st, int idx)
 230 {
 231         this->ffmpeg = ffmpeg;
 232         this->st = st;
 233         this->idx = idx;
 234         frm_lock = new Mutex("FFStream::frm_lock");
 235         fmt_ctx = 0;
 236         filter_graph = 0;
 237         buffersrc_ctx = 0;
 238         buffersink_ctx = 0;
 239         frm_count = 0;
 240         nudge = AV_NOPTS_VALUE;
 241         eof = 0;
 242         reading = writing = 0;
 243         need_packet = 1;
 244         flushed = 0;
 245         frame = fframe = 0;
 246 }
 247
 248 FFStream::~FFStream()
 249 {
 250         if( reading > 0 || writing > 0 ) avcodec_close(st->codec);
 251         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
 252         while( frms.first ) frms.remove(frms.first);
 253         if( filter_graph ) avfilter_graph_free(&filter_graph);
 254         if( frame ) av_frame_free(&frame);
 255         if( fframe ) av_frame_free(&fframe);
 256         bsfilter.remove_all_objects();
 257         delete frm_lock;
 258 }
 259
 260 void FFStream::ff_lock(const char *cp)
 261 {
 262         FFMPEG::fflock.lock(cp);
 263 }
 264
 265 void FFStream::ff_unlock()
 266 {
 267         FFMPEG::fflock.unlock();
 268 }
 269
 270 void FFStream::queue(FFrame *frm)
 271 {
 272         frm_lock->lock("FFStream::queue");
 273         frms.append(frm);
 274         ++frm_count;
 275         frm_lock->unlock();
 276         ffmpeg->mux_lock->unlock();
 277 }
 278
 279 void FFStream::dequeue(FFrame *frm)
 280 {
 281         frm_lock->lock("FFStream::dequeue");
 282         --frm_count;
 283         frms.remove_pointer(frm);
 284         frm_lock->unlock();
 285 }
 286
 287 int FFStream::encode_activate()
 288 {
 289         if( writing < 0 )
 290                 writing = ffmpeg->encode_activate();
 291         return writing;
 292 }
 293
 294 int FFStream::decode_activate()
 295 {
 296         if( reading < 0 && (reading=ffmpeg->decode_activate()) > 0 ) {
 297                 ff_lock("FFStream::decode_activate");
 298                 reading = 0;
 299                 AVDictionary *copts = 0;
 300                 av_dict_copy(&copts, ffmpeg->opts, 0);
 301                 int ret = 0;
 302                 // this should be avformat_copy_context(), but no copy avail
 303                 ret = avformat_open_input(&fmt_ctx, ffmpeg->fmt_ctx->filename, NULL, &copts);
 304                 if( ret >= 0 ) {
 305                         ret = avformat_find_stream_info(fmt_ctx, 0);
 306                         st = fmt_ctx->streams[idx];
 307                 }
 308                 if( ret >= 0 ) {
 309                         AVCodecID codec_id = st->codec->codec_id;
 310                         AVCodec *decoder = avcodec_find_decoder(codec_id);
 311                         ret = avcodec_open2(st->codec, decoder, &copts);
 312                         if( ret >= 0 )
 313                                 reading = 1;
 314                         else
 315                                 eprintf("FFStream::decode_activate: open decoder failed\n");
 316                 }
 317                 else
 318                         eprintf("FFStream::decode_activate: can't clone input file\n");
 319                 av_dict_free(&copts);
 320                 ff_unlock();
 321         }
 322         return reading;
 323 }
 324
 325 int FFStream::read_packet()
 326 {
 327         av_packet_unref(ipkt);
 328         int ret = av_read_frame(fmt_ctx, ipkt);
 329         if( ret >= 0 ) return 1;
 330         st_eof(1);
 331         if( ret == AVERROR_EOF ) return 0;
 332         ff_err(ret, "FFStream::read_packet: av_read_frame failed\n");
 333         flushed = 1;
 334         return -1;
 335 }
 336
 337 int FFStream::decode(AVFrame *frame)
 338 {
 339         int ret = 0;
 340         int retries = 100;
 341         int got_frame = 0;
 342
 343         while( ret >= 0 && !flushed && --retries >= 0 && !got_frame ) {
 344                 if( need_packet ) {
 345                         need_packet = 0;
 346                         ret = read_packet();
 347                         if( ret < 0 ) break;
 348                         if( !ret ) ipkt->stream_index = st->index;
 349                 }
 350                 if( ipkt->stream_index == st->index ) {
 351                         while( (ipkt->size > 0 || !ipkt->data) && !got_frame ) {
 352                                 ret = decode_frame(frame, got_frame);
 353                                 if( ret < 0 || !ipkt->data ) break;
 354                                 ipkt->data += ret;
 355                                 ipkt->size -= ret;
 356                         }
 357                         retries = 100;
 358                 }
 359                 if( !got_frame ) {
 360                         need_packet = 1;
 361                         flushed = st_eof();
 362                 }
 363         }
 364
 365         if( retries < 0 )
 366                 fprintf(stderr, "FFStream::decode: Retry limit\n");
 367         if( ret >= 0 )
 368                 ret = got_frame;
 369         else
 370                 fprintf(stderr, "FFStream::decode: failed\n");
 371
 372         return ret;
 373 }
 374
 375 int FFStream::load_filter(AVFrame *frame)
 376 {
 377         int ret = av_buffersrc_add_frame_flags(buffersrc_ctx,
 378                         frame, AV_BUFFERSRC_FLAG_KEEP_REF);
 379         if( ret < 0 ) {
 380                 av_frame_unref(frame);
 381                 eprintf("FFStream::load_filter: av_buffersrc_add_frame_flags failed\n");
 382         }
 383         return ret;
 384 }
 385
 386 int FFStream::read_filter(AVFrame *frame)
 387 {
 388         int ret = av_buffersink_get_frame(buffersink_ctx, frame);
 389         if( ret < 0 ) {
 390                 if( ret == AVERROR(EAGAIN) ) return 0;
 391                 if( ret == AVERROR_EOF ) { st_eof(1); return -1; }
 392                 ff_err(ret, "FFStream::read_filter: av_buffersink_get_frame failed\n");
 393                 return ret;
 394         }
 395         return 1;
 396 }
 397
 398 int FFStream::read_frame(AVFrame *frame)
 399 {
 400         if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
 401                 return decode(frame);
 402         if( !fframe && !(fframe=av_frame_alloc()) ) {
 403                 fprintf(stderr, "FFStream::read_frame: av_frame_alloc failed\n");
 404                 return -1;
 405         }
 406         int ret = -1;
 407         while( !flushed && !(ret=read_filter(frame)) ) {
 408                 if( (ret=decode(fframe)) < 0 ) break;
 409                 if( ret > 0 && (ret=load_filter(fframe)) < 0 ) break;
 410         }
 411         return ret;
 412 }
 413
 414 int FFStream::write_packet(FFPacket &pkt)
 415 {
 416         bs_filter(pkt);
 417         av_packet_rescale_ts(pkt, st->codec->time_base, st->time_base);
 418         pkt->stream_index = st->index;
 419         return av_interleaved_write_frame(ffmpeg->fmt_ctx, pkt);
 420 }
 421
 422 int FFStream::flush()
 423 {
 424         int ret = 0;
 425         while( ret >= 0 ) {
 426                 FFPacket pkt;
 427                 int got_packet = 0;
 428                 ret = encode_frame(pkt, 0, got_packet);
 429                 if( ret < 0 || !got_packet ) break;
 430                 ret = write_packet(pkt);
 431         }
 432         if( ret < 0 )
 433                 ff_err(ret, "FFStream::flush");
 434         return ret >= 0 ? 0 : 1;
 435 }
 436
 437 FFAudioStream::FFAudioStream(FFMPEG *ffmpeg, AVStream *strm, int idx)
 438  : FFStream(ffmpeg, strm, idx)
 439 {
 440         channel0 = channels = 0;
 441         sample_rate = 0;
 442         mbsz = 0;
 443         seek_pos = curr_pos = 0;
 444         length = 0;
 445         resample_context = 0;
 446
 447         aud_bfr_sz = 0;
 448         aud_bfr = 0;
 449
 450 // history buffer
 451         nch = 2;
 452         sz = 0x10000;
 453         long bsz = sz * nch;
 454         bfr = new float[bsz];
 455         inp = outp = bfr;
 456         lmt = bfr + bsz;
 457 }
 458
 459 FFAudioStream::~FFAudioStream()
 460 {
 461         if( resample_context ) swr_free(&resample_context);
 462         delete [] aud_bfr;
 463         delete [] bfr;
 464 }
 465
 466 int FFAudioStream::load_history(uint8_t **data, int len)
 467 {
 468         float *samples = *(float **)data;
 469         if( resample_context ) {
 470                 if( len > aud_bfr_sz ) {
 471                         delete [] aud_bfr;
 472                         aud_bfr = 0;
 473                 }
 474                 if( !aud_bfr ) {
 475                         aud_bfr_sz = len;
 476                         aud_bfr = new float[aud_bfr_sz*channels];
 477                 }
 478                 int ret = swr_convert(resample_context,
 479                         (uint8_t**)&aud_bfr, aud_bfr_sz, (const uint8_t**)data, len);
 480                 if( ret < 0 ) {
 481                         ff_err(ret, "FFAudioStream::load_history: swr_convert failed\n");
 482                         return -1;
 483                 }
 484                 samples = aud_bfr;
 485                 len = ret;
 486         }
 487         // biggest user bfr since seek + frame
 488         realloc(mbsz + len + 1, channels);
 489         write(samples, len);
 490         return len;
 491 }
 492
 493 int FFAudioStream::decode_frame(AVFrame *frame, int &got_frame)
 494 {
 495         int ret = avcodec_decode_audio4(st->codec, frame, &got_frame, ipkt);
 496         if( ret < 0 ) {
 497                 ff_err(ret, "FFAudioStream::decode_frame: Could not read audio frame\n");
 498                 return -1;
 499         }
 500         return ret;
 501 }
 502
 503 int FFAudioStream::encode_activate()
 504 {
 505         if( writing >= 0 ) return writing;
 506         AVCodecContext *ctx = st->codec;
 507         frame_sz = ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 508                 10000 : ctx->frame_size;
 509         return FFStream::encode_activate();
 510 }
 511
 512 int FFAudioStream::nb_samples()
 513 {
 514         AVCodecContext *ctx = st->codec;
 515         return ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 516                 10000 : ctx->frame_size;
 517 }
 518
 519 int64_t FFAudioStream::load_buffer(double ** const sp, int len)
 520 {
 521         reserve(len+1, st->codec->channels);
 522         for( int ch=0; ch<nch; ++ch )
 523                 write(sp[ch], len, ch);
 524         return put_inp(len);
 525 }
 526
 527 int FFAudioStream::in_history(int64_t pos)
 528 {
 529         if( pos > curr_pos ) return 0;
 530         int64_t len = curr_pos - seek_pos;
 531         if( len > sz ) len = sz;
 532         if( pos < curr_pos - len ) return 0;
 533         return 1;
 534 }
 535
 536
 537 int FFAudioStream::init_frame(AVFrame *frame)
 538 {
 539         AVCodecContext *ctx = st->codec;
 540         frame->nb_samples = frame_sz;
 541         frame->format = ctx->sample_fmt;
 542         frame->channel_layout = ctx->channel_layout;
 543         frame->sample_rate = ctx->sample_rate;
 544         int ret = av_frame_get_buffer(frame, 0);
 545         if (ret < 0)
 546                 ff_err(ret, "FFAudioStream::init_frame: av_frame_get_buffer failed\n");
 547         return ret;
 548 }
 549
 550 int FFAudioStream::load(int64_t pos, int len)
 551 {
 552         if( audio_seek(pos) < 0 ) return -1;
 553         if( mbsz < len ) mbsz = len;
 554         int ret = 0;
 555         int64_t end_pos = pos + len;
 556         if( !frame && !(frame=av_frame_alloc()) ) {
 557                 fprintf(stderr, "FFAudioStream::load: av_frame_alloc failed\n");
 558                 return -1;
 559         }
 560         for( int i=0; ret>=0 && !flushed && curr_pos<end_pos && i<1000; ++i ) {
 561                 ret = read_frame(frame);
 562                 if( ret > 0 ) {
 563                         load_history(&frame->extended_data[0], frame->nb_samples);
 564                         curr_pos += frame->nb_samples;
 565                 }
 566         }
 567         if( end_pos > curr_pos ) {
 568                 zero(end_pos - curr_pos);
 569                 curr_pos = end_pos;
 570         }
 571         return curr_pos - pos;
 572 }
 573
 574 int FFAudioStream::audio_seek(int64_t pos)
 575 {
 576         if( decode_activate() < 0 ) return -1;
 577         if( in_history(pos) ) {
 578                 iseek(curr_pos - pos);
 579                 return 0;
 580         }
 581         if( pos == curr_pos ) return 0;
 582         if( !st->codec || !st->codec->codec ) return -1;
 583         avcodec_flush_buffers(st->codec);
 584         double secs = (double)pos / sample_rate;
 585         int64_t tstmp = secs * st->time_base.den / st->time_base.num;
 586         if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 587         avformat_seek_file(fmt_ctx, st->index, -INT64_MAX, tstmp, INT64_MAX, 0);
 588         seek_pos = curr_pos = pos;
 589         reset();  st_eof(0);
 590         mbsz = 0; flushed = 0;  need_packet = 1;
 591         return 1;
 592 }
 593
 594 int FFAudioStream::encode(double **samples, int len)
 595 {
 596         if( encode_activate() <= 0 ) return -1;
 597         ffmpeg->flow_ctl();
 598         int ret = 0;
 599         int64_t count = load_buffer(samples, len);
 600         FFrame *frm = 0;
 601
 602         while( ret >= 0 && count >= frame_sz ) {
 603                 frm = new FFrame(this);
 604                 if( (ret=frm->initted()) < 0 ) break;
 605                 AVFrame *frame = *frm;
 606                 float *bfrp = get_outp(frame_sz);
 607                 ret =  swr_convert(resample_context,
 608                         (uint8_t **)frame->extended_data, frame_sz,
 609                         (const uint8_t **)&bfrp, frame_sz);
 610                 if( ret < 0 ) {
 611                         ff_err(ret, "FFAudioStream::encode: swr_convert failed\n");
 612                         break;
 613                 }
 614                 frm->queue(curr_pos);
 615                 frm = 0;
 616                 curr_pos += frame_sz;
 617                 count -= frame_sz;
 618         }
 619
 620         delete frm;
 621         return ret >= 0 ? 0 : 1;
 622 }
 623
 624 int FFAudioStream::encode_frame(FFPacket &pkt, AVFrame *frame, int &got_packet)
 625 {
 626         int ret = avcodec_encode_audio2(st->codec, pkt, frame, &got_packet);
 627         if( ret < 0 ) {
 628                 ff_err(ret, "FFAudioStream::encode_frame: encode audio failed\n");
 629                 return -1;
 630         }
 631         return ret;
 632 }
 633
 634 FFVideoStream::FFVideoStream(FFMPEG *ffmpeg, AVStream *strm, int idx)
 635  : FFStream(ffmpeg, strm, idx)
 636 {
 637         width = height = 0;
 638         frame_rate = 0;
 639         aspect_ratio = 0;
 640         seek_pos = curr_pos = 0;
 641         length = 0;
 642         convert_ctx = 0;
 643 }
 644
 645 FFVideoStream::~FFVideoStream()
 646 {
 647         if( convert_ctx ) sws_freeContext(convert_ctx);
 648 }
 649
 650 int FFVideoStream::decode_frame(AVFrame *frame, int &got_frame)
 651 {
 652         int ret = avcodec_decode_video2(st->codec, frame, &got_frame, ipkt);
 653         if( ret < 0 ) {
 654                 ff_err(ret, "FFVideoStream::decode_frame: Could not read video frame\n");
 655                 return -1;
 656         }
 657         if( got_frame )
 658                 ++curr_pos;
 659         return ret;
 660 }
 661
 662 int FFVideoStream::load(VFrame *vframe, int64_t pos)
 663 {
 664         int ret = video_seek(pos);
 665         if( ret < 0 ) return -1;
 666         if( !frame && !(frame=av_frame_alloc()) ) {
 667                 fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
 668                 return -1;
 669         }
 670         for( int i=0; ret>=0 && !flushed && curr_pos<=pos && i<1000; ++i ) {
 671                 ret = read_frame(frame);
 672         }
 673         if( ret > 0 ) {
 674                 AVCodecContext *ctx = st->codec;
 675                 ret = convert_cmodel(vframe, (AVPicture *)frame,
 676                         ctx->pix_fmt, ctx->width, ctx->height);
 677         }
 678         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
 679         return ret;
 680 }
 681
 682 int FFVideoStream::video_seek(int64_t pos)
 683 {
 684         if( decode_activate() < 0 ) return -1;
 685 // if close enough, just read up to current
 686 //   3*gop_size seems excessive, but less causes tears
 687         int gop = 3*st->codec->gop_size;
 688         if( gop < 4 ) gop = 4;
 689         if( gop > 64 ) gop = 64;
 690         if( pos >= curr_pos && pos <= curr_pos + gop ) return 0;
 691         if( pos == curr_pos-1 && curr_pos > seek_pos ) return 1;
 692         if( !st->codec || !st->codec->codec ) return -1;
 693         avcodec_flush_buffers(st->codec);
 694 // back up a few frames to read up to current to help repair damages
 695         if( (pos-=gop) < 0 ) pos = 0;
 696         double secs = (double)pos / frame_rate;
 697         int64_t tstmp = secs * st->time_base.den / st->time_base.num;
 698         if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 699         avformat_seek_file(fmt_ctx, st->index, -INT64_MAX, tstmp, INT64_MAX, 0);
 700         seek_pos = curr_pos = pos;
 701         st_eof(0);
 702         flushed = 0;  need_packet = 1;
 703         return 1;
 704 }
 705
 706 int FFVideoStream::init_frame(AVFrame *picture)
 707 {
 708         AVCodecContext *ctx = st->codec;
 709         picture->format = ctx->pix_fmt;
 710         picture->width  = ctx->width;
 711         picture->height = ctx->height;
 712         int ret = av_frame_get_buffer(picture, 32);
 713         return ret;
 714 }
 715
 716 int FFVideoStream::encode(VFrame *vframe)
 717 {
 718         if( encode_activate() <= 0 ) return -1;
 719         ffmpeg->flow_ctl();
 720         FFrame *picture = new FFrame(this);
 721         int ret = picture->initted();
 722         if( ret >= 0 ) {
 723                 AVFrame *frame = *picture;
 724                 frame->pts = curr_pos;
 725                 AVCodecContext *ctx = st->codec;
 726                 ret = convert_pixfmt(vframe, (AVPicture*)frame,
 727                         ctx->pix_fmt, ctx->width, ctx->height);
 728         }
 729         if( ret >= 0 ) {
 730                 picture->queue(curr_pos);
 731                 ++curr_pos;
 732         }
 733         else {
 734                 fprintf(stderr, "FFVideoStream::encode: encode failed\n");
 735                 delete picture;
 736         }
 737         return ret >= 0 ? 0 : 1;
 738 }
 739
 740 int FFVideoStream::encode_frame(FFPacket &pkt, AVFrame *frame, int &got_packet)
 741 {
 742         int ret = avcodec_encode_video2(st->codec, pkt, frame, &got_packet);
 743         if( ret < 0 ) {
 744                 ff_err(ret, "FFVideoStream::encode_frame: encode video failed\n");
 745                 return -1;
 746         }
 747         return ret;
 748 }
 749
 750 PixelFormat FFVideoStream::color_model_to_pix_fmt(int color_model)
 751 {
 752         switch( color_model ) {
 753         case BC_YUV422:         return AV_PIX_FMT_YUYV422;
 754         case BC_RGB888:         return AV_PIX_FMT_RGB24;
 755         case BC_RGBA8888:       return AV_PIX_FMT_RGBA;
 756         case BC_BGR8888:        return AV_PIX_FMT_BGR0;
 757         case BC_BGR888:         return AV_PIX_FMT_BGR24;
 758         case BC_YUV420P:        return AV_PIX_FMT_YUV420P;
 759         case BC_YUV422P:        return AV_PIX_FMT_YUV422P;
 760         case BC_YUV444P:        return AV_PIX_FMT_YUV444P;
 761         case BC_YUV411P:        return AV_PIX_FMT_YUV411P;
 762         case BC_RGB565:         return AV_PIX_FMT_RGB565;
 763         case BC_RGB161616:      return AV_PIX_FMT_RGB48LE;
 764         case BC_RGBA16161616:   return AV_PIX_FMT_RGBA64LE;
 765         default: break;
 766         }
 767
 768         return AV_PIX_FMT_NB;
 769 }
 770
 771 int FFVideoStream::pix_fmt_to_color_model(PixelFormat pix_fmt)
 772 {
 773         switch (pix_fmt) {
 774         case AV_PIX_FMT_YUYV422:        return BC_YUV422;
 775         case AV_PIX_FMT_RGB24:          return BC_RGB888;
 776         case AV_PIX_FMT_RGBA:           return BC_RGBA8888;
 777         case AV_PIX_FMT_BGR0:           return BC_BGR8888;
 778         case AV_PIX_FMT_BGR24:          return BC_BGR888;
 779         case AV_PIX_FMT_YUV420P:        return BC_YUV420P;
 780         case AV_PIX_FMT_YUV422P:        return BC_YUV422P;
 781         case AV_PIX_FMT_YUV444P:        return BC_YUV444P;
 782         case AV_PIX_FMT_YUV411P:        return BC_YUV411P;
 783         case AV_PIX_FMT_RGB565:         return BC_RGB565;
 784         case AV_PIX_FMT_RGB48LE:        return BC_RGB161616;
 785         case AV_PIX_FMT_RGBA64LE:       return BC_RGBA16161616;
 786         default: break;
 787         }
 788
 789         return BC_TRANSPARENCY;
 790 }
 791
 792 int FFVideoStream::convert_picture_vframe(VFrame *frame,
 793                 AVPicture *ip, PixelFormat ifmt, int iw, int ih)
 794 {
 795         AVPicture opic;
 796         int cmodel = frame->get_color_model();
 797         PixelFormat ofmt = color_model_to_pix_fmt(cmodel);
 798         if( ofmt == AV_PIX_FMT_NB ) return -1;
 799         int size = avpicture_fill(&opic, frame->get_data(), ofmt,
 800                                   frame->get_w(), frame->get_h());
 801         if( size < 0 ) return -1;
 802
 803         // transfer line sizes must match also
 804         int planar = BC_CModels::is_planar(cmodel);
 805         int packed_width = !planar ? frame->get_bytes_per_line() :
 806                  BC_CModels::calculate_pixelsize(cmodel) * frame->get_w();
 807         if( packed_width != opic.linesize[0] )  return -1;
 808
 809         if( planar ) {
 810                 // override avpicture_fill() for planar types
 811                 opic.data[0] = frame->get_y();
 812                 opic.data[1] = frame->get_u();
 813                 opic.data[2] = frame->get_v();
 814         }
 815
 816         convert_ctx = sws_getCachedContext(convert_ctx, iw, ih, ifmt,
 817                 frame->get_w(), frame->get_h(), ofmt, SWS_BICUBIC, NULL, NULL, NULL);
 818         if( !convert_ctx ) {
 819                 fprintf(stderr, "FFVideoStream::convert_picture_frame:"
 820                                 " sws_getCachedContext() failed\n");
 821                 return 1;
 822         }
 823         int ret = sws_scale(convert_ctx, ip->data, ip->linesize, 0, ih,
 824             opic.data, opic.linesize);
 825         if( ret < 0 ) {
 826                 ff_err(ret, "FFVideoStream::convert_picture_frame: sws_scale() failed\n");
 827                 return 1;
 828         }
 829         return 0;
 830 }
 831
 832 int FFVideoStream::convert_cmodel(VFrame *frame,
 833                  AVPicture *ip, PixelFormat ifmt, int iw, int ih)
 834 {
 835         // try direct transfer
 836         if( !convert_picture_vframe(frame, ip, ifmt, iw, ih) ) return 1;
 837         // use indirect transfer
 838         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ifmt);
 839         int max_bits = 0;
 840         for( int i = 0; i <desc->nb_components; ++i ) {
 841                 int bits = desc->comp[i].depth_minus1 + 1;
 842                 if( bits > max_bits ) max_bits = bits;
 843         }
 844 // from libavcodec/pixdesc.c
 845 #define pixdesc_has_alpha(pixdesc) ((pixdesc)->nb_components == 2 || \
 846  (pixdesc)->nb_components == 4 || (pixdesc)->flags & AV_PIX_FMT_FLAG_PAL)
 847         int icolor_model = pixdesc_has_alpha(desc) ?
 848                 (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
 849                 (max_bits > 8 ? BC_RGB161616 : BC_RGB888) ;
 850         VFrame vframe(iw, ih, icolor_model);
 851         if( convert_picture_vframe(&vframe, ip, ifmt, iw, ih) ) return -1;
 852         frame->transfer_from(&vframe);
 853         return 1;
 854 }
 855
 856 int FFVideoStream::convert_vframe_picture(VFrame *frame,
 857                 AVPicture *op, PixelFormat ofmt, int ow, int oh)
 858 {
 859         AVPicture opic;
 860         int cmodel = frame->get_color_model();
 861         PixelFormat ifmt = color_model_to_pix_fmt(cmodel);
 862         if( ifmt == AV_PIX_FMT_NB ) return -1;
 863         int size = avpicture_fill(&opic, frame->get_data(), ifmt,
 864                                   frame->get_w(), frame->get_h());
 865         if( size < 0 ) return -1;
 866
 867         // transfer line sizes must match also
 868         int planar = BC_CModels::is_planar(cmodel);
 869         int packed_width = !planar ? frame->get_bytes_per_line() :
 870                  BC_CModels::calculate_pixelsize(cmodel) * frame->get_w();
 871         if( packed_width != opic.linesize[0] )  return -1;
 872
 873         if( planar ) {
 874                 // override avpicture_fill() for planar types
 875                 opic.data[0] = frame->get_y();
 876                 opic.data[1] = frame->get_u();
 877                 opic.data[2] = frame->get_v();
 878         }
 879
 880         convert_ctx = sws_getCachedContext(convert_ctx, frame->get_w(), frame->get_h(), ifmt,
 881                 ow, oh, ofmt, SWS_BICUBIC, NULL, NULL, NULL);
 882         if( !convert_ctx ) {
 883                 fprintf(stderr, "FFVideoStream::convert_frame_picture:"
 884                                 " sws_getCachedContext() failed\n");
 885                 return 1;
 886         }
 887         int ret = sws_scale(convert_ctx, opic.data, opic.linesize, 0, frame->get_h(),
 888                         op->data, op->linesize);
 889         if( ret < 0 ) {
 890                 ff_err(ret, "FFVideoStream::convert_frame_picture: sws_scale() failed\n");
 891                 return 1;
 892         }
 893         return 0;
 894 }
 895
 896 int FFVideoStream::convert_pixfmt(VFrame *frame,
 897                  AVPicture *op, PixelFormat ofmt, int ow, int oh)
 898 {
 899         // try direct transfer
 900         if( !convert_vframe_picture(frame, op, ofmt, ow, oh) ) return 0;
 901         // use indirect transfer
 902         int colormodel = frame->get_color_model();
 903         int bits = BC_CModels::calculate_pixelsize(colormodel) * 8;
 904         bits /= BC_CModels::components(colormodel);
 905         int icolor_model =  BC_CModels::has_alpha(colormodel) ?
 906                 (bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
 907                 (bits > 8 ? BC_RGB161616: BC_RGB888) ;
 908         VFrame vframe(frame->get_w(), frame->get_h(), icolor_model);
 909         vframe.transfer_from(frame);
 910         if( convert_vframe_picture(&vframe, op, ofmt, ow, oh) ) return 1;
 911         return 0;
 912 }
 913
 914
 915 FFMPEG::FFMPEG(FileBase *file_base)
 916 {
 917         fmt_ctx = 0;
 918         this->file_base = file_base;
 919         memset(file_format,0,sizeof(file_format));
 920         mux_lock = new Condition(0,"FFMPEG::mux_lock",0);
 921         flow_lock = new Condition(1,"FFStream::flow_lock",0);
 922         done = -1;
 923         flow = 1;
 924         decoding = encoding = 0;
 925         has_audio = has_video = 0;
 926         opts = 0;
 927         opt_duration = -1;
 928         opt_video_filter = 0;
 929         opt_audio_filter = 0;
 930         char option_path[BCTEXTLEN];
 931         set_option_path(option_path, "%s", "ffmpeg.opts");
 932         read_options(option_path, opts);
 933 }
 934
 935 FFMPEG::~FFMPEG()
 936 {
 937         ff_lock("FFMPEG::~FFMPEG()");
 938         close_encoder();
 939         ffaudio.remove_all_objects();
 940         ffvideo.remove_all_objects();
 941         if( encoding ) avformat_free_context(fmt_ctx);
 942         ff_unlock();
 943         delete flow_lock;
 944         delete mux_lock;
 945         av_dict_free(&opts);
 946         delete [] opt_video_filter;
 947         delete [] opt_audio_filter;
 948 }
 949
 950 int FFMPEG::check_sample_rate(AVCodec *codec, int sample_rate)
 951 {
 952         const int *p = codec->supported_samplerates;
 953         if( !p ) return sample_rate;
 954         while( *p != 0 ) {
 955                 if( *p == sample_rate ) return *p;
 956                 ++p;
 957         }
 958         return 0;
 959 }
 960
 961 static inline AVRational std_frame_rate(int i)
 962 {
 963         static const int m1 = 1001*12, m2 = 1000*12;
 964         static const int freqs[] = {
 965                 40*m1, 48*m1, 50*m1, 60*m1, 80*m1,120*m1, 240*m1,
 966                 24*m2, 30*m2, 60*m2, 12*m2, 15*m2, 48*m2, 0,
 967         };
 968         int freq = i<30*12 ? (i+1)*1001 : freqs[i-30*12];
 969         return (AVRational) { freq, 1001*12 };
 970 }
 971
 972 AVRational FFMPEG::check_frame_rate(AVCodec *codec, double frame_rate)
 973 {
 974         const AVRational *p = codec->supported_framerates;
 975         AVRational rate, best_rate = (AVRational) { 0, 0 };
 976         double max_err = 1.;  int i = 0;
 977         while( ((p ? (rate=*p++) : (rate=std_frame_rate(i++))), rate.num) != 0 ) {
 978                 double framerate = (double) rate.num / rate.den;
 979                 double err = fabs(frame_rate/framerate - 1.);
 980                 if( err >= max_err ) continue;
 981                 max_err = err;
 982                 best_rate = rate;
 983         }
 984         return max_err < 0.0001 ? best_rate : (AVRational) { 0, 0 };
 985 }
 986
 987 AVRational FFMPEG::to_sample_aspect_ratio(double aspect_ratio)
 988 {
 989 #if 1
 990         int height = 1000000, width = height * aspect_ratio;
 991         float w, h;
 992         MWindow::create_aspect_ratio(w, h, width, height);
 993         return (AVRational){(int)w, (int)h};
 994 #else
 995 // square pixels
 996         return (AVRational){1, 1};
 997 #endif
 998 }
 999
1000 AVRational FFMPEG::to_time_base(int sample_rate)
1001 {
1002         return (AVRational){1, sample_rate};
1003 }
1004
1005 void FFMPEG::set_option_path(char *path, const char *fmt, ...)
1006 {
1007         get_exe_path(path);
1008         strcat(path, "/ffmpeg/");
1009         path += strlen(path);
1010         va_list ap;
1011         va_start(ap, fmt);
1012         vsprintf(path, fmt, ap);
1013         va_end(ap);
1014 }
1015
1016 void FFMPEG::get_option_path(char *path, const char *type, const char *spec)
1017 {
1018         if( *spec == '/' )
1019                 strcpy(path, spec);
1020         else
1021                 set_option_path(path, "%s/%s", type, spec);
1022 }
1023
1024 int FFMPEG::get_format(char *format, const char *path, char *spec)
1025 {
1026         char option_path[BCTEXTLEN], line[BCTEXTLEN], codec[BCTEXTLEN];
1027         get_option_path(option_path, path, spec);
1028         FILE *fp = fopen(option_path,"r");
1029         if( !fp ) return 1;
1030         int ret = 0;
1031         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1032         if( !ret ) {
1033                 line[sizeof(line)-1] = 0;
1034                 ret = scan_option_line(line, format, codec);
1035         }
1036         fclose(fp);
1037         return ret;
1038 }
1039
1040 int FFMPEG::get_file_format()
1041 {
1042         int ret = 0;
1043         char audio_format[BCSTRLEN], video_format[BCSTRLEN];
1044         file_format[0] = audio_format[0] = video_format[0] = 0;
1045         Asset *asset = file_base->asset;
1046         if( !ret && asset->audio_data )
1047                 ret = get_format(audio_format, "audio", asset->acodec);
1048         if( !ret && asset->video_data )
1049                 ret = get_format(video_format, "video", asset->vcodec);
1050         if( !ret && !audio_format[0] && !video_format[0] )
1051                 ret = 1;
1052         if( !ret && audio_format[0] && video_format[0] &&
1053             strcmp(audio_format, video_format) ) ret = -1;
1054         if( !ret )
1055                 strcpy(file_format, audio_format[0] ? audio_format : video_format);
1056         return ret;
1057 }
1058
1059 int FFMPEG::scan_option_line(char *cp, char *tag, char *val)
1060 {
1061         while( *cp == ' ' || *cp == '\t' ) ++cp;
1062         char *bp = cp;
1063         while( *cp && *cp != ' ' && *cp != '\t' && *cp != '=' ) ++cp;
1064         int len = cp - bp;
1065         if( !len || len > BCSTRLEN-1 ) return 1;
1066         while( bp < cp ) *tag++ = *bp++;
1067         *tag = 0;
1068         while( *cp == ' ' || *cp == '\t' ) ++cp;
1069         if( *cp == '=' ) ++cp;
1070         while( *cp == ' ' || *cp == '\t' ) ++cp;
1071         bp = cp;
1072         while( *cp && *cp != '\n' ) ++cp;
1073         len = cp - bp;
1074         if( len > BCTEXTLEN-1 ) return 1;
1075         while( bp < cp ) *val++ = *bp++;
1076         *val = 0;
1077         return 0;
1078 }
1079
1080 int FFMPEG::get_encoder(const char *options,
1081                 char *format, char *codec, char *bsfilter, char *bsargs)
1082 {
1083         FILE *fp = fopen(options,"r");
1084         if( !fp ) {
1085                 eprintf("FFMPEG::get_encoder: options open failed %s\n",options);
1086                 return 1;
1087         }
1088         if( get_encoder(fp, format, codec, bsfilter, bsargs) )
1089                 eprintf(_("FFMPEG::get_encoder:"
1090                           " err: format/codec not found %s\n"), options);
1091         fclose(fp);
1092         return 0;
1093 }
1094
1095 int FFMPEG::get_encoder(FILE *fp,
1096                 char *format, char *codec, char *bsfilter, char *bsargs)
1097 {
1098         format[0] = codec[0] = bsfilter[0] = bsargs[0] = 0;
1099         char line[BCTEXTLEN];
1100         if( !fgets(line, sizeof(line), fp) ) return 1;
1101         line[sizeof(line)-1] = 0;
1102         if( scan_option_line(line, format, codec) ) return 1;
1103         char *cp = codec;
1104         while( *cp && *cp != '|' ) ++cp;
1105         if( !*cp ) return 0;
1106         if( scan_option_line(cp+1, bsfilter, bsargs) ) return 1;
1107         do { *cp-- = 0; } while( cp>=codec && (*cp==' ' || *cp == '\t' ) );
1108         return 0;
1109 }
1110
1111 int FFMPEG::read_options(const char *options, AVDictionary *&opts)
1112 {
1113         FILE *fp = fopen(options,"r");
1114         if( !fp ) return 1;
1115         int ret = read_options(fp, options, opts);
1116         fclose(fp);
1117         return ret;
1118 }
1119
1120 int FFMPEG::scan_options(const char *options, AVDictionary *&opts, AVStream *st)
1121 {
1122         FILE *fp = fmemopen((void *)options,strlen(options),"r");
1123         if( !fp ) return 0;
1124         int ret = read_options(fp, options, opts);
1125         fclose(fp);
1126         AVDictionaryEntry *tag = av_dict_get(opts, "id", NULL, 0);
1127         if( tag ) st->id = strtol(tag->value,0,0);
1128         return ret;
1129 }
1130
1131 int FFMPEG::read_options(FILE *fp, const char *options, AVDictionary *&opts)
1132 {
1133         int ret = 0, no = 0;
1134         char line[BCTEXTLEN];
1135         while( !ret && fgets(line, sizeof(line), fp) ) {
1136                 line[sizeof(line)-1] = 0;
1137                 ++no;
1138                 if( line[0] == '#' ) continue;
1139                 if( line[0] == '\n' ) continue;
1140                 char key[BCSTRLEN], val[BCTEXTLEN];
1141                 if( scan_option_line(line, key, val) ) {
1142                         eprintf(_("FFMPEG::read_options:"
1143                                   " err reading %s: line %d\n"), options, no);
1144                         ret = 1;
1145                 }
1146                 if( !ret ) {
1147                         if( !strcmp(key, "duration") )
1148                                 opt_duration = strtod(val, 0);
1149                         if( !strcmp(key, "video_filter") )
1150                                 opt_video_filter = cstrdup(val);
1151                         if( !strcmp(key, "audio_filter") )
1152                                 opt_audio_filter = cstrdup(val);
1153                         else if( !strcmp(key, "loglevel") )
1154                                 set_loglevel(val);
1155                         else
1156                                 av_dict_set(&opts, key, val, 0);
1157                 }
1158         }
1159         return ret;
1160 }
1161
1162 int FFMPEG::load_options(const char *options, AVDictionary *&opts)
1163 {
1164         char option_path[BCTEXTLEN];
1165         set_option_path(option_path, "%s", options);
1166         return read_options(option_path, opts);
1167 }
1168
1169 int FFMPEG::load_options(const char *path, char *bfr, int len)
1170 {
1171         *bfr = 0;
1172         FILE *fp = fopen(path, "r");
1173         if( !fp ) return 1;
1174         fgets(bfr, len, fp); // skip hdr
1175         len = fread(bfr, 1, len-1, fp);
1176         if( len < 0 ) len = 0;
1177         bfr[len] = 0;
1178         fclose(fp);
1179         return 0;
1180 }
1181
1182 void FFMPEG::set_loglevel(const char *ap)
1183 {
1184         if( !ap || !*ap ) return;
1185         const struct {
1186                 const char *name;
1187                 int level;
1188         } log_levels[] = {
1189                 { "quiet"  , AV_LOG_QUIET   },
1190                 { "panic"  , AV_LOG_PANIC   },
1191                 { "fatal"  , AV_LOG_FATAL   },
1192                 { "error"  , AV_LOG_ERROR   },
1193                 { "warning", AV_LOG_WARNING },
1194                 { "info"   , AV_LOG_INFO    },
1195                 { "verbose", AV_LOG_VERBOSE },
1196                 { "debug"  , AV_LOG_DEBUG   },
1197         };
1198         for( int i=0; i<(int)(sizeof(log_levels)/sizeof(log_levels[0])); ++i ) {
1199                 if( !strcmp(log_levels[i].name, ap) ) {
1200                         av_log_set_level(log_levels[i].level);
1201                         return;
1202                 }
1203         }
1204         av_log_set_level(atoi(ap));
1205 }
1206
1207 double FFMPEG::to_secs(int64_t time, AVRational time_base)
1208 {
1209         double base_time = time == AV_NOPTS_VALUE ? 0 :
1210                 av_rescale_q(time, time_base, AV_TIME_BASE_Q);
1211         return base_time / AV_TIME_BASE;
1212 }
1213
1214 int FFMPEG::info(char *text, int len)
1215 {
1216         if( len <= 0 ) return 0;
1217 #define report(s...) do { int n = snprintf(cp,len,s); cp += n;  len -= n; } while(0)
1218         char *cp = text;
1219         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1220                 AVStream *st = fmt_ctx->streams[i];
1221                 AVCodecContext *avctx = st->codec;
1222                 report(_("stream %d,  id 0x%06x:\n"), i, avctx->codec_id);
1223                 const AVCodecDescriptor *desc = avcodec_descriptor_get(avctx->codec_id);
1224                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1225                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
1226                         double frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
1227                         report("  video %s",desc ? desc->name : " (unkn)");
1228                         report(" %dx%d %5.2f", avctx->width, avctx->height, frame_rate);
1229                         const char *pfn = av_get_pix_fmt_name(avctx->pix_fmt);
1230                         report(" pix %s\n", pfn ? pfn : "(unkn)");
1231                         double secs = to_secs(st->duration, st->time_base);
1232                         int64_t length = secs * frame_rate + 0.5;
1233                         report("    %jd frms %0.2f secs", length, secs);
1234                         int hrs = secs/3600;  secs -= hrs*3600;
1235                         int mins = secs/60;  secs -= mins*60;
1236                         report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1237
1238                 }
1239                 else if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1240                         int sample_rate = avctx->sample_rate;
1241                         const char *fmt = av_get_sample_fmt_name(avctx->sample_fmt);
1242                         report("  audio %s",desc ? desc->name : " (unkn)");
1243                         report(" %dch %s %d",avctx->channels, fmt, sample_rate);
1244                         int sample_bits = av_get_bits_per_sample(avctx->codec_id);
1245                         report(" %dbits\n", sample_bits);
1246                         double secs = to_secs(st->duration, st->time_base);
1247                         int64_t length = secs * sample_rate + 0.5;
1248                         report("    %jd smpl %0.2f secs", length, secs);
1249                         int hrs = secs/3600;  secs -= hrs*3600;
1250                         int mins = secs/60;  secs -= mins*60;
1251                         report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1252                 }
1253                 else
1254                         report(_("  codec_type unknown\n"));
1255         }
1256         report("\n");
1257         for( int i=0; i<(int)fmt_ctx->nb_programs; ++i ) {
1258                 report("program %d", i+1);
1259                 AVProgram *pgrm = fmt_ctx->programs[i];
1260                 for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j )
1261                         report(", %d", pgrm->stream_index[j]);
1262                 report("\n");
1263         }
1264         report("\n");
1265         AVDictionaryEntry *tag = 0;
1266         while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
1267                 report("%s=%s\n", tag->key, tag->value);
1268
1269         if( !len ) --cp;
1270         *cp = 0;
1271         return cp - text;
1272 #undef report
1273 }
1274
1275
1276 int FFMPEG::init_decoder(const char *filename)
1277 {
1278         ff_lock("FFMPEG::init_decoder");
1279         av_register_all();
1280         char file_opts[BCTEXTLEN];
1281         char *bp = strrchr(strcpy(file_opts, filename), '/');
1282         char *sp = strrchr(!bp ? file_opts : bp, '.');
1283         FILE *fp = 0;
1284         if( sp ) {
1285                 strcpy(sp, ".opts");
1286                 fp = fopen(file_opts, "r");
1287         }
1288         if( fp ) {
1289                 read_options(fp, file_opts, opts);
1290                 fclose(fp);
1291         }
1292         else
1293                 load_options("decode.opts", opts);
1294         AVDictionary *fopts = 0;
1295         av_dict_copy(&fopts, opts, 0);
1296         int ret = avformat_open_input(&fmt_ctx, filename, NULL, &fopts);
1297         av_dict_free(&fopts);
1298         if( ret >= 0 )
1299                 ret = avformat_find_stream_info(fmt_ctx, NULL);
1300         if( !ret ) {
1301                 decoding = -1;
1302         }
1303         ff_unlock();
1304         return !ret ? 0 : 1;
1305 }
1306
1307 int FFMPEG::open_decoder()
1308 {
1309         struct stat st;
1310         if( stat(fmt_ctx->filename, &st) < 0 ) {
1311                 eprintf("FFMPEG::open_decoder: can't stat file: %s\n",
1312                         fmt_ctx->filename);
1313                 return 1;
1314         }
1315
1316         int64_t file_bits = 8 * st.st_size;
1317         if( !fmt_ctx->bit_rate && opt_duration > 0 )
1318                 fmt_ctx->bit_rate = file_bits / opt_duration;
1319
1320         int estimated = 0;
1321         if( fmt_ctx->bit_rate > 0 ) {
1322                 for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1323                         AVStream *st = fmt_ctx->streams[i];
1324                         if( st->duration != AV_NOPTS_VALUE ) continue;
1325                         if( st->time_base.num > INT64_MAX / fmt_ctx->bit_rate ) continue;
1326                         st->duration = av_rescale(file_bits, st->time_base.den,
1327                                 fmt_ctx->bit_rate * (int64_t) st->time_base.num);
1328                         estimated = 1;
1329                 }
1330         }
1331         if( estimated )
1332                 printf("FFMPEG::open_decoder: some stream times estimated\n");
1333
1334         ff_lock("FFMPEG::open_decoder");
1335         int bad_time = 0;
1336         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1337                 AVStream *st = fmt_ctx->streams[i];
1338                 if( st->duration == AV_NOPTS_VALUE ) bad_time = 1;
1339                 AVCodecContext *avctx = st->codec;
1340                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1341                         has_video = 1;
1342                         FFVideoStream *vid = new FFVideoStream(this, st, i);
1343                         int vidx = ffvideo.size();
1344                         vstrm_index.append(ffidx(vidx, 0));
1345                         ffvideo.append(vid);
1346                         vid->width = avctx->width;
1347                         vid->height = avctx->height;
1348                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
1349                         vid->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
1350                         double secs = to_secs(st->duration, st->time_base);
1351                         vid->length = secs * vid->frame_rate;
1352                         vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den;
1353                         vid->nudge = st->start_time;
1354                         vid->reading = -1;
1355                         if( opt_video_filter )
1356                                 vid->create_filter(opt_video_filter, avctx,avctx);
1357                 }
1358                 else if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1359                         has_audio = 1;
1360                         FFAudioStream *aud = new FFAudioStream(this, st, i);
1361                         int aidx = ffaudio.size();
1362                         ffaudio.append(aud);
1363                         aud->channel0 = astrm_index.size();
1364                         aud->channels = avctx->channels;
1365                         for( int ch=0; ch<aud->channels; ++ch )
1366                                 astrm_index.append(ffidx(aidx, ch));
1367                         aud->sample_rate = avctx->sample_rate;
1368                         double secs = to_secs(st->duration, st->time_base);
1369                         aud->length = secs * aud->sample_rate;
1370                         if( avctx->sample_fmt != AV_SAMPLE_FMT_FLT ) {
1371                                 uint64_t layout = av_get_default_channel_layout(avctx->channels);
1372                                 if( !layout ) layout = ((uint64_t)1<<aud->channels) - 1;
1373                                 aud->resample_context = swr_alloc_set_opts(NULL,
1374                                         layout, AV_SAMPLE_FMT_FLT, avctx->sample_rate,
1375                                         layout, avctx->sample_fmt, avctx->sample_rate,
1376                                         0, NULL);
1377                                 swr_init(aud->resample_context);
1378                         }
1379                         aud->nudge = st->start_time;
1380                         aud->reading = -1;
1381                         if( opt_audio_filter )
1382                                 aud->create_filter(opt_audio_filter, avctx,avctx);
1383                 }
1384         }
1385         if( bad_time )
1386                 printf("FFMPEG::open_decoder: some stream have bad times\n");
1387         ff_unlock();
1388         return 0;
1389 }
1390
1391
1392 int FFMPEG::init_encoder(const char *filename)
1393 {
1394         int fd = ::open(filename,O_WRONLY);
1395         if( fd < 0 ) fd = open(filename,O_WRONLY+O_CREAT,0666);
1396         if( fd < 0 ) {
1397                 eprintf("FFMPEG::init_encoder: bad file path: %s\n", filename);
1398                 return 1;
1399         }
1400         ::close(fd);
1401         int ret = get_file_format();
1402         if( ret > 0 ) {
1403                 eprintf("FFMPEG::init_encoder: bad file format: %s\n", filename);
1404                 return 1;
1405         }
1406         if( ret < 0 ) {
1407                 eprintf("FFMPEG::init_encoder: mismatch audio/video file format: %s\n", filename);
1408                 return 1;
1409         }
1410         ff_lock("FFMPEG::init_encoder");
1411         av_register_all();
1412         avformat_alloc_output_context2(&fmt_ctx, 0, file_format, filename);
1413         if( !fmt_ctx ) {
1414                 eprintf("FFMPEG::init_encoder: failed: %s\n", filename);
1415                 ret = 1;
1416         }
1417         if( !ret ) {
1418                 encoding = -1;
1419                 load_options("encode.opts", opts);
1420         }
1421         ff_unlock();
1422         start_muxer();
1423         return ret;
1424 }
1425
1426 int FFMPEG::open_encoder(const char *type, const char *spec)
1427 {
1428
1429         Asset *asset = file_base->asset;
1430         char *filename = asset->path;
1431         AVDictionary *sopts = 0;
1432         av_dict_copy(&sopts, opts, 0);
1433         char option_path[BCTEXTLEN];
1434         set_option_path(option_path, "%s/%s.opts", type, type);
1435         read_options(option_path, sopts);
1436         get_option_path(option_path, type, spec);
1437         char format_name[BCSTRLEN], codec_name[BCTEXTLEN];
1438         char bsfilter[BCSTRLEN], bsargs[BCTEXTLEN];
1439         if( get_encoder(option_path, format_name, codec_name, bsfilter, bsargs) ) {
1440                 eprintf("FFMPEG::open_encoder: get_encoder failed %s:%s\n",
1441                         option_path, filename);
1442                 return 1;
1443         }
1444
1445         if( !strcmp(codec_name, CODEC_TAG_DVSD) ) strcpy(codec_name, "dv");
1446         else if( !strcmp(codec_name, CODEC_TAG_MJPEG) ) strcpy(codec_name, "mjpeg");
1447         else if( !strcmp(codec_name, CODEC_TAG_JPEG) ) strcpy(codec_name, "jpeg");
1448
1449         int ret = 0;
1450         ff_lock("FFMPEG::open_encoder");
1451         FFStream *fst = 0;
1452         AVStream *st = 0;
1453
1454         const AVCodecDescriptor *codec_desc = 0;
1455         AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
1456         if( !codec ) {
1457                 eprintf("FFMPEG::open_encoder: cant find codec %s:%s\n",
1458                         codec_name, filename);
1459                 ret = 1;
1460         }
1461         if( !ret ) {
1462                 codec_desc = avcodec_descriptor_get(codec->id);
1463                 if( !codec_desc ) {
1464                         eprintf("FFMPEG::open_encoder: unknown codec %s:%s\n",
1465                                 codec_name, filename);
1466                         ret = 1;
1467                 }
1468         }
1469         if( !ret ) {
1470                 st = avformat_new_stream(fmt_ctx, 0);
1471                 if( !st ) {
1472                         eprintf("FFMPEG::open_encoder: cant create stream %s:%s\n",
1473                                 codec_name, filename);
1474                         ret = 1;
1475                 }
1476         }
1477         if( !ret ) {
1478                 AVCodecContext *ctx = st->codec;
1479                 switch( codec_desc->type ) {
1480                 case AVMEDIA_TYPE_AUDIO: {
1481                         if( has_audio ) {
1482                                 eprintf("FFMPEG::open_encoder: duplicate audio %s:%s\n",
1483                                         codec_name, filename);
1484                                 ret = 1;
1485                                 break;
1486                         }
1487                         has_audio = 1;
1488                         if( scan_options(asset->ff_audio_options, sopts, st) ) {
1489                                 eprintf("FFMPEG::open_encoder: bad audio options %s:%s\n",
1490                                         codec_name, filename);
1491                                 ret = 1;
1492                                 break;
1493                         }
1494                         if( asset->ff_audio_bitrate > 0 ) {
1495                                 ctx->bit_rate = asset->ff_audio_bitrate;
1496                                 char arg[BCSTRLEN];
1497                                 sprintf(arg, "%d", asset->ff_audio_bitrate);
1498                                 av_dict_set(&sopts, "b", arg, 0);
1499                         }
1500                         int aidx = ffaudio.size();
1501                         int idx = aidx + ffvideo.size();
1502                         FFAudioStream *aud = new FFAudioStream(this, st, idx);
1503                         ffaudio.append(aud);  fst = aud;
1504                         aud->sample_rate = asset->sample_rate;
1505                         ctx->channels = aud->channels = asset->channels;
1506                         for( int ch=0; ch<aud->channels; ++ch )
1507                                 astrm_index.append(ffidx(aidx, ch));
1508                         ctx->channel_layout =  av_get_default_channel_layout(ctx->channels);
1509                         ctx->sample_rate = check_sample_rate(codec, asset->sample_rate);
1510                         if( !ctx->sample_rate ) {
1511                                 eprintf("FFMPEG::open_audio_encode:"
1512                                         " check_sample_rate failed %s\n", filename);
1513                                 ret = 1;
1514                                 break;
1515                         }
1516                         ctx->time_base = st->time_base = (AVRational){1, aud->sample_rate};
1517                         ctx->sample_fmt = codec->sample_fmts[0];
1518                         uint64_t layout = av_get_default_channel_layout(ctx->channels);
1519                         aud->resample_context = swr_alloc_set_opts(NULL,
1520                                 layout, ctx->sample_fmt, aud->sample_rate,
1521                                 layout, AV_SAMPLE_FMT_FLT, ctx->sample_rate,
1522                                 0, NULL);
1523                         swr_init(aud->resample_context);
1524                         aud->writing = -1;
1525                         break; }
1526                 case AVMEDIA_TYPE_VIDEO: {
1527                         if( has_video ) {
1528                                 eprintf("FFMPEG::open_encoder: duplicate video %s:%s\n",
1529                                         codec_name, filename);
1530                                 ret = 1;
1531                                 break;
1532                         }
1533                         has_video = 1;
1534                         if( scan_options(asset->ff_video_options, sopts, st) ) {
1535                                 eprintf("FFMPEG::open_encoder: bad video options %s:%s\n",
1536                                         codec_name, filename);
1537                                 ret = 1;
1538                                 break;
1539                         }
1540                         if( asset->ff_video_bitrate > 0 ) {
1541                                 ctx->bit_rate = asset->ff_video_bitrate;
1542                                 char arg[BCSTRLEN];
1543                                 sprintf(arg, "%d", asset->ff_video_bitrate);
1544                                 av_dict_set(&sopts, "b", arg, 0);
1545                         }
1546                         else if( asset->ff_video_quality > 0 ) {
1547                                 ctx->global_quality = asset->ff_video_quality * FF_QP2LAMBDA;
1548                                 ctx->qmin    = ctx->qmax =  asset->ff_video_quality;
1549                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
1550                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
1551                                 ctx->flags |= CODEC_FLAG_QSCALE;
1552                                 char arg[BCSTRLEN];
1553                                 av_dict_set(&sopts, "flags", "+qscale", 0);
1554                                 sprintf(arg, "%d", asset->ff_video_quality);
1555                                 av_dict_set(&sopts, "qscale", arg, 0);
1556                                 sprintf(arg, "%d", ctx->global_quality);
1557                                 av_dict_set(&sopts, "global_quality", arg, 0);
1558                         }
1559                         int vidx = ffvideo.size();
1560                         int idx = vidx + ffaudio.size();
1561                         FFVideoStream *vid = new FFVideoStream(this, st, idx);
1562                         vstrm_index.append(ffidx(vidx, 0));
1563                         ffvideo.append(vid);  fst = vid;
1564                         vid->width = asset->width;
1565                         ctx->width = (vid->width+3) & ~3;
1566                         vid->height = asset->height;
1567                         ctx->height = (vid->height+3) & ~3;
1568                         vid->frame_rate = asset->frame_rate;
1569                         ctx->sample_aspect_ratio = to_sample_aspect_ratio(asset->aspect_ratio);
1570                         ctx->pix_fmt = codec->pix_fmts ? codec->pix_fmts[0] : AV_PIX_FMT_YUV420P;
1571                         AVRational frame_rate = check_frame_rate(codec, vid->frame_rate);
1572                         if( !frame_rate.num || !frame_rate.den ) {
1573                                 eprintf("FFMPEG::open_audio_encode:"
1574                                         " check_frame_rate failed %s\n", filename);
1575                                 ret = 1;
1576                                 break;
1577                         }
1578                         ctx->time_base = (AVRational) { frame_rate.den, frame_rate.num };
1579                         st->time_base = ctx->time_base;
1580                         vid->writing = -1;
1581                         break; }
1582                 default:
1583                         eprintf("FFMPEG::open_encoder: not audio/video, %s:%s\n",
1584                                 codec_name, filename);
1585                         ret = 1;
1586                 }
1587         }
1588         if( !ret ) {
1589                 if( fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER )
1590                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
1591
1592                 ret = avcodec_open2(st->codec, codec, &sopts);
1593                 if( ret < 0 ) {
1594                         ff_err(ret,"FFMPEG::open_encoder");
1595                         eprintf("FFMPEG::open_encoder: open failed %s:%s\n",
1596                                 codec_name, filename);
1597                         ret = 1;
1598                 }
1599                 else
1600                         ret = 0;
1601         }
1602         if( !ret ) {
1603                 if( fst && bsfilter[0] )
1604                         fst->add_bsfilter(bsfilter, !bsargs[0] ? 0 : bsargs);
1605         }
1606
1607         ff_unlock();
1608         av_dict_free(&sopts);
1609         return ret;
1610 }
1611
1612 int FFMPEG::close_encoder()
1613 {
1614         stop_muxer();
1615         if( encoding > 0 ) {
1616                 av_write_trailer(fmt_ctx);
1617                 if( !(fmt_ctx->flags & AVFMT_NOFILE) )
1618                         avio_closep(&fmt_ctx->pb);
1619         }
1620         encoding = 0;
1621         return 0;
1622 }
1623
1624 int FFMPEG::decode_activate()
1625 {
1626         if( decoding < 0 ) {
1627                 decoding = 0;
1628                 int npgrms = fmt_ctx->nb_programs;
1629                 for( int i=0; i<npgrms; ++i ) {
1630                         AVProgram *pgrm = fmt_ctx->programs[i];
1631                         // first start time video stream
1632                         int64_t vstart_time = -1;
1633                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1634                                 int st_idx = pgrm->stream_index[j];
1635                                 AVStream *st = fmt_ctx->streams[st_idx];
1636                                 AVCodecContext *avctx = st->codec;
1637                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1638                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1639                                         vstart_time = st->start_time;
1640                                         break;
1641                                 }
1642                         }
1643                         // max start time audio stream
1644                         int64_t astart_time = -1;
1645                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1646                                 int st_idx = pgrm->stream_index[j];
1647                                 AVStream *st = fmt_ctx->streams[st_idx];
1648                                 AVCodecContext *avctx = st->codec;
1649                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1650                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1651                                         if( astart_time > st->start_time ) continue;
1652                                         astart_time = st->start_time;
1653                                 }
1654                         }
1655                         if( astart_time < 0 || vstart_time < 0 ) continue;
1656                         // match program streams to max start_time
1657                         int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1658                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1659                                 int st_idx = pgrm->stream_index[j];
1660                                 AVStream *st = fmt_ctx->streams[st_idx];
1661                                 AVCodecContext *avctx = st->codec;
1662                                 if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1663                                         for( int k=0; k<ffaudio.size(); ++k ) {
1664                                                 if( ffaudio[k]->idx == st_idx )
1665                                                         ffaudio[k]->nudge = nudge;
1666                                         }
1667                                 }
1668                                 else if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1669                                         for( int k=0; k<ffvideo.size(); ++k ) {
1670                                                 if( ffvideo[k]->idx == st_idx )
1671                                                         ffvideo[k]->nudge = nudge;
1672                                         }
1673                                 }
1674                         }
1675                 }
1676                 int64_t vstart_time = 0, astart_time = 0;
1677                 int nstreams = fmt_ctx->nb_streams;
1678                 for( int i=0; i<nstreams; ++i ) {
1679                         AVStream *st = fmt_ctx->streams[i];
1680                         AVCodecContext *avctx = st->codec;
1681                         switch( avctx->codec_type ) {
1682                         case AVMEDIA_TYPE_VIDEO:
1683                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1684                                 if( vstart_time >= st->start_time ) continue;
1685                                 vstart_time = st->start_time;
1686                                 break;
1687                         case AVMEDIA_TYPE_AUDIO:
1688                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1689                                 if( astart_time >= st->start_time ) continue;
1690                                 astart_time = st->start_time;
1691                         default: break;
1692                         }
1693                 }
1694                 int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1695                 for( int k=0; k<ffvideo.size(); ++k ) {
1696                         if( ffvideo[k]->nudge != AV_NOPTS_VALUE ) continue;
1697                         ffvideo[k]->nudge = nudge;
1698                 }
1699                 for( int k=0; k<ffaudio.size(); ++k ) {
1700                         if( ffaudio[k]->nudge != AV_NOPTS_VALUE ) continue;
1701                         ffaudio[k]->nudge = nudge;
1702                 }
1703                 decoding = 1;
1704         }
1705         return decoding;
1706 }
1707
1708 int FFMPEG::encode_activate()
1709 {
1710         int ret = 0;
1711         if( encoding < 0 ) {
1712                 encoding = 0;
1713                 if( !(fmt_ctx->flags & AVFMT_NOFILE) &&
1714                     (ret=avio_open(&fmt_ctx->pb, fmt_ctx->filename, AVIO_FLAG_WRITE)) < 0 ) {
1715                         ff_err(ret, "FFMPEG::encode_activate: err opening : %s\n",
1716                                 fmt_ctx->filename);
1717                         return 1;
1718                 }
1719
1720                 AVDictionary *fopts = 0;
1721                 char option_path[BCTEXTLEN];
1722                 set_option_path(option_path, "format/%s", file_format);
1723                 read_options(option_path, fopts);
1724                 ret = avformat_write_header(fmt_ctx, &fopts);
1725                 av_dict_free(&fopts);
1726                 if( ret < 0 ) {
1727                         ff_err(ret, "FFMPEG::encode_activate: write header failed %s\n",
1728                                 fmt_ctx->filename);
1729                         return 1;
1730                 }
1731                 encoding = 1;
1732         }
1733         return encoding;
1734 }
1735
1736 int FFMPEG::audio_seek(int stream, int64_t pos)
1737 {
1738         int aidx = astrm_index[stream].st_idx;
1739         FFAudioStream *aud = ffaudio[aidx];
1740         aud->audio_seek(pos);
1741         aud->seek_pos = aud->curr_pos = pos;
1742         return 0;
1743 }
1744
1745 int FFMPEG::video_seek(int stream, int64_t pos)
1746 {
1747         int vidx = vstrm_index[stream].st_idx;
1748         FFVideoStream *vid = ffvideo[vidx];
1749         vid->video_seek(pos);
1750         vid->seek_pos = vid->curr_pos = pos;
1751         return 0;
1752 }
1753
1754
1755 int FFMPEG::decode(int chn, int64_t pos, double *samples, int len)
1756 {
1757         if( !has_audio || chn >= astrm_index.size() ) return -1;
1758         int aidx = astrm_index[chn].st_idx;
1759         FFAudioStream *aud = ffaudio[aidx];
1760         if( aud->load(pos, len) < len ) return -1;
1761         int ch = astrm_index[chn].st_ch;
1762         return aud->read(samples,len,ch);
1763 }
1764
1765 int FFMPEG::decode(int layer, int64_t pos, VFrame *vframe)
1766 {
1767         if( !has_video || layer >= vstrm_index.size() ) return -1;
1768         int vidx = vstrm_index[layer].st_idx;
1769         FFVideoStream *vid = ffvideo[vidx];
1770         return vid->load(vframe, pos);
1771 }
1772
1773 int FFMPEG::encode(int stream, double **samples, int len)
1774 {
1775         FFAudioStream *aud = ffaudio[stream];
1776         return aud->encode(samples, len);
1777 }
1778
1779
1780 int FFMPEG::encode(int stream, VFrame *frame)
1781 {
1782         FFVideoStream *vid = ffvideo[stream];
1783         return vid->encode(frame);
1784 }
1785
1786 void FFMPEG::start_muxer()
1787 {
1788         if( !running() ) {
1789                 done = 0;
1790                 start();
1791         }
1792 }
1793
1794 void FFMPEG::stop_muxer()
1795 {
1796         if( running() ) {
1797                 done = 1;
1798                 mux_lock->unlock();
1799                 join();
1800         }
1801 }
1802
1803 void FFMPEG::flow_off()
1804 {
1805         if( !flow ) return;
1806         flow_lock->lock("FFMPEG::flow_off");
1807         flow = 0;
1808 }
1809
1810 void FFMPEG::flow_on()
1811 {
1812         if( flow ) return;
1813         flow = 1;
1814         flow_lock->unlock();
1815 }
1816
1817 void FFMPEG::flow_ctl()
1818 {
1819         while( !flow ) {
1820                 flow_lock->lock("FFMPEG::flow_ctl");
1821                 flow_lock->unlock();
1822         }
1823 }
1824
1825 int FFMPEG::mux_audio(FFrame *frm)
1826 {
1827         FFPacket pkt;
1828         FFStream *fst = frm->fst;
1829         AVCodecContext *ctx = fst->st->codec;
1830         AVFrame *frame = *frm;
1831         AVRational tick_rate = {1, ctx->sample_rate};
1832         frame->pts = av_rescale_q(frm->position, tick_rate, ctx->time_base);
1833         int got_packet = 0;
1834         int ret = fst->encode_frame(pkt, frame, got_packet);
1835         if( ret >= 0 && got_packet )
1836                 ret = fst->write_packet(pkt);
1837         if( ret < 0 )
1838                 ff_err(ret, "FFMPEG::mux_audio");
1839         return ret >= 0 ? 0 : 1;
1840 }
1841
1842 int FFMPEG::mux_video(FFrame *frm)
1843 {
1844         FFPacket pkt;
1845         FFStream *fst = frm->fst;
1846         AVFrame *frame = *frm;
1847         frame->pts = frm->position;
1848         int ret = 1, got_packet = 0;
1849         if( fmt_ctx->oformat->flags & AVFMT_RAWPICTURE ) {
1850                 /* a hack to avoid data copy with some raw video muxers */
1851                 pkt->flags |= AV_PKT_FLAG_KEY;
1852                 pkt->stream_index  = fst->st->index;
1853                 AVPicture *picture = (AVPicture *)frame;
1854                 pkt->data = (uint8_t *)picture;
1855                 pkt->size = sizeof(AVPicture);
1856                 pkt->pts = pkt->dts = frame->pts;
1857                 got_packet = 1;
1858         }
1859         else
1860                 ret = fst->encode_frame(pkt, frame, got_packet);
1861         if( ret >= 0 && got_packet )
1862                 ret = fst->write_packet(pkt);
1863         if( ret < 0 )
1864                 ff_err(ret, "FFMPEG::mux_video");
1865         return ret >= 0 ? 0 : 1;
1866 }
1867
1868 void FFMPEG::mux()
1869 {
1870         for(;;) {
1871                 double atm = -1, vtm = -1;
1872                 FFrame *afrm = 0, *vfrm = 0;
1873                 int demand = 0;
1874                 for( int i=0; i<ffaudio.size(); ++i ) {  // earliest audio
1875                         FFStream *fst = ffaudio[i];
1876                         if( fst->frm_count < 3 ) { demand = 1; flow_on(); }
1877                         FFrame *frm = fst->frms.first;
1878                         if( !frm ) { if( !done ) return; continue; }
1879                         double tm = to_secs(frm->position, fst->st->codec->time_base);
1880                         if( atm < 0 || tm < atm ) { atm = tm;  afrm = frm; }
1881                 }
1882                 for( int i=0; i<ffvideo.size(); ++i ) {  // earliest video
1883                         FFStream *fst = ffvideo[i];
1884                         if( fst->frm_count < 2 ) { demand = 1; flow_on(); }
1885                         FFrame *frm = fst->frms.first;
1886                         if( !frm ) { if( !done ) return; continue; }
1887                         double tm = to_secs(frm->position, fst->st->codec->time_base);
1888                         if( vtm < 0 || tm < vtm ) { vtm = tm;  vfrm = frm; }
1889                 }
1890                 if( !demand ) flow_off();
1891                 if( !afrm && !vfrm ) break;
1892                 int v = !afrm ? -1 : !vfrm ? 1 : av_compare_ts(
1893                         vfrm->position, vfrm->fst->st->codec->time_base,
1894                         afrm->position, afrm->fst->st->codec->time_base);
1895                 FFrame *frm = v <= 0 ? vfrm : afrm;
1896                 if( frm == afrm ) mux_audio(frm);
1897                 if( frm == vfrm ) mux_video(frm);
1898                 frm->dequeue();
1899                 delete frm;
1900         }
1901 }
1902
1903 void FFMPEG::run()
1904 {
1905         while( !done ) {
1906                 mux_lock->lock("FFMPEG::run");
1907                 if( !done ) mux();
1908         }
1909         mux();
1910         for( int i=0; i<ffaudio.size(); ++i )
1911                 ffaudio[i]->flush();
1912         for( int i=0; i<ffvideo.size(); ++i )
1913                 ffvideo[i]->flush();
1914 }
1915
1916
1917 int FFMPEG::ff_total_audio_channels()
1918 {
1919         return astrm_index.size();
1920 }
1921
1922 int FFMPEG::ff_total_astreams()
1923 {
1924         return ffaudio.size();
1925 }
1926
1927 int FFMPEG::ff_audio_channels(int stream)
1928 {
1929         return ffaudio[stream]->channels;
1930 }
1931
1932 int FFMPEG::ff_sample_rate(int stream)
1933 {
1934         return ffaudio[stream]->sample_rate;
1935 }
1936
1937 const char* FFMPEG::ff_audio_format(int stream)
1938 {
1939         AVStream *st = ffaudio[stream]->st;
1940         AVCodecID id = st->codec->codec_id;
1941         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
1942         return desc ? desc->name : "Unknown";
1943 }
1944
1945 int FFMPEG::ff_audio_pid(int stream)
1946 {
1947         return ffaudio[stream]->st->id;
1948 }
1949
1950 int64_t FFMPEG::ff_audio_samples(int stream)
1951 {
1952         return ffaudio[stream]->length;
1953 }
1954
1955 // find audio astream/channels with this program,
1956 //   or all program audio channels (astream=-1)
1957 int FFMPEG::ff_audio_for_video(int vstream, int astream, int64_t &channel_mask)
1958 {
1959         channel_mask = 0;
1960         int pidx = -1;
1961         int vidx = ffvideo[vstream]->idx;
1962         // find first program with this video stream
1963         for( int i=0; pidx<0 && i<(int)fmt_ctx->nb_programs; ++i ) {
1964                 AVProgram *pgrm = fmt_ctx->programs[i];
1965                 for( int j=0;  pidx<0 && j<(int)pgrm->nb_stream_indexes; ++j ) {
1966                         int st_idx = pgrm->stream_index[j];
1967                         AVStream *st = fmt_ctx->streams[st_idx];
1968                         if( st->codec->codec_type != AVMEDIA_TYPE_VIDEO ) continue;
1969                         if( st_idx == vidx ) pidx = i;
1970                 }
1971         }
1972         if( pidx < 0 ) return -1;
1973         int ret = -1;
1974         int64_t channels = 0;
1975         AVProgram *pgrm = fmt_ctx->programs[pidx];
1976         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1977                 int aidx = pgrm->stream_index[j];
1978                 AVStream *st = fmt_ctx->streams[aidx];
1979                 if( st->codec->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
1980                 if( astream > 0 ) { --astream;  continue; }
1981                 int astrm = -1;
1982                 for( int i=0; astrm<0 && i<ffaudio.size(); ++i )
1983                         if( ffaudio[i]->idx == aidx ) astrm = i;
1984                 if( astrm >= 0 ) {
1985                         if( ret < 0 ) ret = astrm;
1986                         int64_t mask = (1 << ffaudio[astrm]->channels) - 1;
1987                         channels |= mask << ffaudio[astrm]->channel0;
1988                 }
1989                 if( !astream ) break;
1990         }
1991         channel_mask = channels;
1992         return ret;
1993 }
1994
1995
1996 int FFMPEG::ff_total_video_layers()
1997 {
1998         return vstrm_index.size();
1999 }
2000
2001 int FFMPEG::ff_total_vstreams()
2002 {
2003         return ffvideo.size();
2004 }
2005
2006 int FFMPEG::ff_video_width(int stream)
2007 {
2008         return ffvideo[stream]->width;
2009 }
2010
2011 int FFMPEG::ff_video_height(int stream)
2012 {
2013         return ffvideo[stream]->height;
2014 }
2015
2016 int FFMPEG::ff_set_video_width(int stream, int width)
2017 {
2018         int w = ffvideo[stream]->width;
2019         ffvideo[stream]->width = width;
2020         return w;
2021 }
2022
2023 int FFMPEG::ff_set_video_height(int stream, int height)
2024 {
2025         int h = ffvideo[stream]->height;
2026         ffvideo[stream]->height = height;
2027         return h;
2028 }
2029
2030 int FFMPEG::ff_coded_width(int stream)
2031 {
2032         AVStream *st = ffvideo[stream]->st;
2033         return st->codec->coded_width;
2034 }
2035
2036 int FFMPEG::ff_coded_height(int stream)
2037 {
2038         AVStream *st = ffvideo[stream]->st;
2039         return st->codec->coded_height;
2040 }
2041
2042 float FFMPEG::ff_aspect_ratio(int stream)
2043 {
2044         return ffvideo[stream]->aspect_ratio;
2045 }
2046
2047 const char* FFMPEG::ff_video_format(int stream)
2048 {
2049         AVStream *st = ffvideo[stream]->st;
2050         AVCodecID id = st->codec->codec_id;
2051         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
2052         return desc ? desc->name : "Unknown";
2053 }
2054
2055 double FFMPEG::ff_frame_rate(int stream)
2056 {
2057         return ffvideo[stream]->frame_rate;
2058 }
2059
2060 int64_t FFMPEG::ff_video_frames(int stream)
2061 {
2062         return ffvideo[stream]->length;
2063 }
2064
2065 int FFMPEG::ff_video_pid(int stream)
2066 {
2067         return ffvideo[stream]->st->id;
2068 }
2069
2070
2071 int FFMPEG::ff_cpus()
2072 {
2073         return file_base->file->cpus;
2074 }
2075
2076 int FFVideoStream::create_filter(const char *filter_spec,
2077                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
2078 {
2079         avfilter_register_all();
2080         AVFilter *filter = avfilter_get_by_name(filter_spec);
2081         if( !filter || filter->inputs->type != AVMEDIA_TYPE_VIDEO ) {
2082                 ff_err(AVERROR(EINVAL), "FFVideoStream::create_filter: %s\n", filter_spec);
2083                 return -1;
2084         }
2085         filter_graph = avfilter_graph_alloc();
2086         AVFilter *buffersrc = avfilter_get_by_name("buffer");
2087         AVFilter *buffersink = avfilter_get_by_name("buffersink");
2088
2089         int ret = 0;  char args[BCTEXTLEN];
2090         snprintf(args, sizeof(args),
2091                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
2092                 src_ctx->width, src_ctx->height, src_ctx->pix_fmt,
2093                 st->time_base.num, st->time_base.den,
2094                 src_ctx->sample_aspect_ratio.num, src_ctx->sample_aspect_ratio.den);
2095         if( ret >= 0 )
2096                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2097                         args, NULL, filter_graph);
2098         if( ret >= 0 )
2099                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2100                         NULL, NULL, filter_graph);
2101         if( ret >= 0 )
2102                 ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
2103                         (uint8_t*)&sink_ctx->pix_fmt, sizeof(sink_ctx->pix_fmt),
2104                         AV_OPT_SEARCH_CHILDREN);
2105         if( ret < 0 )
2106                 ff_err(ret, "FFVideoStream::create_filter");
2107         else
2108                 ret = FFStream::create_filter(filter_spec);
2109         return ret >= 0 ? 0 : 1;
2110 }
2111
2112 int FFAudioStream::create_filter(const char *filter_spec,
2113                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
2114 {
2115         avfilter_register_all();
2116         AVFilter *filter = avfilter_get_by_name(filter_spec);
2117         if( !filter || filter->inputs->type != AVMEDIA_TYPE_AUDIO ) {
2118                 ff_err(AVERROR(EINVAL), "FFAudioStream::create_filter: %s\n", filter_spec);
2119                 return -1;
2120         }
2121         filter_graph = avfilter_graph_alloc();
2122         AVFilter *buffersrc = avfilter_get_by_name("abuffer");
2123         AVFilter *buffersink = avfilter_get_by_name("abuffersink");
2124         int ret = 0;  char args[BCTEXTLEN];
2125         snprintf(args, sizeof(args),
2126                 "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%jx",
2127                 st->time_base.num, st->time_base.den, src_ctx->sample_rate,
2128                 av_get_sample_fmt_name(src_ctx->sample_fmt), src_ctx->channel_layout);
2129         if( ret >= 0 )
2130                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2131                         args, NULL, filter_graph);
2132         if( ret >= 0 )
2133                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2134                         NULL, NULL, filter_graph);
2135         if( ret >= 0 )
2136                 ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
2137                         (uint8_t*)&sink_ctx->sample_fmt, sizeof(sink_ctx->sample_fmt),
2138                         AV_OPT_SEARCH_CHILDREN);
2139         if( ret >= 0 )
2140                 ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
2141                         (uint8_t*)&sink_ctx->channel_layout,
2142                         sizeof(sink_ctx->channel_layout), AV_OPT_SEARCH_CHILDREN);
2143         if( ret >= 0 )
2144                 ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
2145                         (uint8_t*)&sink_ctx->sample_rate, sizeof(sink_ctx->sample_rate),
2146                         AV_OPT_SEARCH_CHILDREN);
2147         if( ret < 0 )
2148                 ff_err(ret, "FFAudioStream::create_filter");
2149         else
2150                 ret = FFStream::create_filter(filter_spec);
2151         return ret >= 0 ? 0 : 1;
2152 }
2153
2154 int FFStream::create_filter(const char *filter_spec)
2155 {
2156         /* Endpoints for the filter graph. */
2157         AVFilterInOut *outputs = avfilter_inout_alloc();
2158         outputs->name = av_strdup("in");
2159         outputs->filter_ctx = buffersrc_ctx;
2160         outputs->pad_idx = 0;
2161         outputs->next = 0;
2162
2163         AVFilterInOut *inputs  = avfilter_inout_alloc();
2164         inputs->name = av_strdup("out");
2165         inputs->filter_ctx = buffersink_ctx;
2166         inputs->pad_idx = 0;
2167         inputs->next = 0;
2168
2169         int ret = !outputs->name || !inputs->name ? -1 : 0;
2170         if( ret >= 0 )
2171                 ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
2172                         &inputs, &outputs, NULL);
2173         if( ret >= 0 )
2174                 ret = avfilter_graph_config(filter_graph, NULL);
2175
2176         if( ret < 0 )
2177                 ff_err(ret, "FFStream::create_filter");
2178         avfilter_inout_free(&inputs);
2179         avfilter_inout_free(&outputs);
2180         return ret;
2181 }
2182
2183 void FFStream::add_bsfilter(const char *bsf, const char *ap)
2184 {
2185         bsfilter.append(new BSFilter(bsf,ap));
2186 }
2187
2188 int FFStream::bs_filter(AVPacket *pkt)
2189 {
2190         if( !bsfilter.size() ) return 0;
2191         av_packet_split_side_data(pkt);
2192
2193         int ret = 0;
2194         for( int i=0; i<bsfilter.size(); ++i ) {
2195                 AVPacket bspkt = *pkt;
2196                 ret = av_bitstream_filter_filter(bsfilter[i]->bsfc,
2197                          st->codec, bsfilter[i]->args, &bspkt.data, &bspkt.size,
2198                          pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY);
2199                 if( ret < 0 ) break;
2200                 int size = bspkt.size;
2201                 uint8_t *data = bspkt.data;
2202                 if( !ret && bspkt.data != pkt->data ) {
2203                         size = bspkt.size;
2204                         data = (uint8_t *)av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2205                         if( !data ) { ret = AVERROR(ENOMEM);  break; }
2206                         memcpy(data, bspkt.data, size);
2207                         memset(data+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2208                         ret = 1;
2209                 }
2210                 if( ret > 0 ) {
2211                         pkt->side_data = 0;  pkt->side_data_elems = 0;
2212                         av_free_packet(pkt);
2213                         ret = av_packet_from_data(&bspkt, data, size);
2214                         if( ret < 0 ) break;
2215                 }
2216                 *pkt = bspkt;
2217         }
2218         if( ret < 0 )
2219                 ff_err(ret,"FFStream::bs_filter");
2220         return ret;
2221 }
2222