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