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 #define MAX_RETRY 1000
  16
  17 #include "asset.h"
  18 #include "bccmodels.h"
  19 #include "bchash.h"
  20 #include "fileffmpeg.h"
  21 #include "file.h"
  22 #include "ffmpeg.h"
  23 #include "indexfile.h"
  24 #include "libdv.h"
  25 #include "libmjpeg.h"
  26 #include "mainerror.h"
  27 #include "mwindow.h"
  28 #include "vframe.h"
  29
  30
  31 #define VIDEO_INBUF_SIZE 0x10000
  32 #define AUDIO_INBUF_SIZE 0x10000
  33 #define VIDEO_REFILL_THRESH 0
  34 #define AUDIO_REFILL_THRESH 0x1000
  35
  36 Mutex FFMPEG::fflock("FFMPEG::fflock");
  37
  38 static void ff_err(int ret, const char *fmt, ...)
  39 {
  40         char msg[BCTEXTLEN];
  41         va_list ap;
  42         va_start(ap, fmt);
  43         vsnprintf(msg, sizeof(msg), fmt, ap);
  44         va_end(ap);
  45         char errmsg[BCSTRLEN];
  46         av_strerror(ret, errmsg, sizeof(errmsg));
  47         fprintf(stderr,_("%s  err: %s\n"),msg, errmsg);
  48 }
  49
  50 FFPacket::FFPacket()
  51 {
  52         init();
  53 }
  54
  55 FFPacket::~FFPacket()
  56 {
  57         av_free_packet(&pkt);
  58 }
  59
  60 void FFPacket::init()
  61 {
  62         av_init_packet(&pkt);
  63         pkt.data = 0; pkt.size = 0;
  64 }
  65
  66 FFrame::FFrame(FFStream *fst)
  67 {
  68         this->fst = fst;
  69         frm = av_frame_alloc();
  70         init = fst->init_frame(frm);
  71 }
  72
  73 FFrame::~FFrame()
  74 {
  75         av_frame_free(&frm);
  76 }
  77
  78 void FFrame::queue(int64_t pos)
  79 {
  80         position = pos;
  81         fst->queue(this);
  82 }
  83
  84 void FFrame::dequeue()
  85 {
  86         fst->dequeue(this);
  87 }
  88
  89 int FFAudioStream::read(float *fp, long len)
  90 {
  91         long n = len * nch;
  92         float *op = outp;
  93         while( n > 0 ) {
  94                 int k = lmt - op;
  95                 if( k > n ) k = n;
  96                 n -= k;
  97                 while( --k >= 0 ) *fp++ = *op++;
  98                 if( op >= lmt ) op = bfr;
  99         }
 100         return len;
 101 }
 102
 103 void FFAudioStream::realloc(long nsz, int nch, long len)
 104 {
 105         long bsz = nsz * nch;
 106         float *np = new float[bsz];
 107         inp = np + read(np, len) * nch;
 108         outp = np;
 109         lmt = np + bsz;
 110         this->nch = nch;
 111         sz = nsz;
 112         delete [] bfr;  bfr = np;
 113 }
 114
 115 void FFAudioStream::realloc(long nsz, int nch)
 116 {
 117         if( nsz > sz || this->nch != nch ) {
 118                 long len = this->nch != nch ? 0 : hpos;
 119                 if( len > sz ) len = sz;
 120                 iseek(len);
 121                 realloc(nsz, nch, len);
 122         }
 123 }
 124
 125 void FFAudioStream::reserve(long nsz, int nch)
 126 {
 127         long len = (inp - outp) / nch;
 128         nsz += len;
 129         if( nsz > sz || this->nch != nch ) {
 130                 if( this->nch != nch ) len = 0;
 131                 realloc(nsz, nch, len);
 132                 return;
 133         }
 134         if( (len*=nch) > 0 && bfr != outp )
 135                 memmove(bfr, outp, len*sizeof(*bfr));
 136         outp = bfr;
 137         inp = bfr + len;
 138 }
 139
 140 long FFAudioStream::used()
 141 {
 142         long len = inp>=outp ? inp-outp : inp-bfr + lmt-outp;
 143         return len / nch;
 144 }
 145 long FFAudioStream::avail()
 146 {
 147         float *in1 = inp+1;
 148         if( in1 >= lmt ) in1 = bfr;
 149         long len = outp >= in1 ? outp-in1 : outp-bfr + lmt-in1;
 150         return len / nch;
 151 }
 152 void FFAudioStream::reset_history()
 153 {
 154         inp = outp = bfr;
 155         hpos = 0;
 156 }
 157
 158 void FFAudioStream::iseek(int64_t ofs)
 159 {
 160         outp = inp - ofs*nch;
 161         if( outp < bfr ) outp += sz*nch;
 162 }
 163
 164 float *FFAudioStream::get_outp(int ofs)
 165 {
 166         float *ret = outp;
 167         outp += ofs*nch;
 168         return ret;
 169 }
 170
 171 int64_t FFAudioStream::put_inp(int ofs)
 172 {
 173         inp += ofs*nch;
 174         return (inp-outp) / nch;
 175 }
 176
 177 int FFAudioStream::write(const float *fp, long len)
 178 {
 179         long n = len * nch;
 180         float *ip = inp;
 181         while( n > 0 ) {
 182                 int k = lmt - ip;
 183                 if( k > n ) k = n;
 184                 n -= k;
 185                 while( --k >= 0 ) *ip++ = *fp++;
 186                 if( ip >= lmt ) ip = bfr;
 187         }
 188         inp = ip;
 189         hpos += len;
 190         return len;
 191 }
 192
 193 int FFAudioStream::zero(long len)
 194 {
 195         long n = len * nch;
 196         float *ip = inp;
 197         while( n > 0 ) {
 198                 int k = lmt - ip;
 199                 if( k > n ) k = n;
 200                 n -= k;
 201                 while( --k >= 0 ) *ip++ = 0;
 202                 if( ip >= lmt ) ip = bfr;
 203         }
 204         inp = ip;
 205         hpos += len;
 206         return len;
 207 }
 208
 209 // does not advance outp
 210 int FFAudioStream::read(double *dp, long len, int ch)
 211 {
 212         long n = len;
 213         float *op = outp + ch;
 214         float *lmt1 = lmt + nch-1;
 215         while( n > 0 ) {
 216                 int k = (lmt1 - op) / nch;
 217                 if( k > n ) k = n;
 218                 n -= k;
 219                 while( --k >= 0 ) { *dp++ = *op;  op += nch; }
 220                 if( op >= lmt ) op -= sz*nch;
 221         }
 222         return len;
 223 }
 224
 225 // load linear buffer, no wrapping allowed, does not advance inp
 226 int FFAudioStream::write(const double *dp, long len, int ch)
 227 {
 228         long n = len;
 229         float *ip = inp + ch;
 230         while( --n >= 0 ) { *ip = *dp++;  ip += nch; }
 231         return len;
 232 }
 233
 234
 235 FFStream::FFStream(FFMPEG *ffmpeg, AVStream *st, int fidx)
 236 {
 237         this->ffmpeg = ffmpeg;
 238         this->st = st;
 239         this->fidx = fidx;
 240         frm_lock = new Mutex("FFStream::frm_lock");
 241         fmt_ctx = 0;
 242         filter_graph = 0;
 243         buffersrc_ctx = 0;
 244         buffersink_ctx = 0;
 245         frm_count = 0;
 246         nudge = AV_NOPTS_VALUE;
 247         seek_pos = curr_pos = 0;
 248         seeked = 1;  eof = 0;
 249         index_markers = 0;
 250         reading = writing = 0;
 251         flushed = 0;
 252         need_packet = 1;
 253         frame = fframe = 0;
 254 }
 255
 256 FFStream::~FFStream()
 257 {
 258         if( reading > 0 || writing > 0 ) avcodec_close(st->codec);
 259         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
 260         while( frms.first ) frms.remove(frms.first);
 261         if( filter_graph ) avfilter_graph_free(&filter_graph);
 262         if( frame ) av_frame_free(&frame);
 263         if( fframe ) av_frame_free(&fframe);
 264         bsfilter.remove_all_objects();
 265         delete frm_lock;
 266 }
 267
 268 void FFStream::ff_lock(const char *cp)
 269 {
 270         FFMPEG::fflock.lock(cp);
 271 }
 272
 273 void FFStream::ff_unlock()
 274 {
 275         FFMPEG::fflock.unlock();
 276 }
 277
 278 void FFStream::queue(FFrame *frm)
 279 {
 280         frm_lock->lock("FFStream::queue");
 281         frms.append(frm);
 282         ++frm_count;
 283         frm_lock->unlock();
 284         ffmpeg->mux_lock->unlock();
 285 }
 286
 287 void FFStream::dequeue(FFrame *frm)
 288 {
 289         frm_lock->lock("FFStream::dequeue");
 290         --frm_count;
 291         frms.remove_pointer(frm);
 292         frm_lock->unlock();
 293 }
 294
 295 int FFStream::encode_activate()
 296 {
 297         if( writing < 0 )
 298                 writing = ffmpeg->encode_activate();
 299         return writing;
 300 }
 301
 302 int FFStream::decode_activate()
 303 {
 304         if( reading < 0 && (reading=ffmpeg->decode_activate()) > 0 ) {
 305                 ff_lock("FFStream::decode_activate");
 306                 reading = 0;
 307                 AVDictionary *copts = 0;
 308                 av_dict_copy(&copts, ffmpeg->opts, 0);
 309                 int ret = 0;
 310                 // this should be avformat_copy_context(), but no copy avail
 311                 ret = avformat_open_input(&fmt_ctx, ffmpeg->fmt_ctx->filename, NULL, &copts);
 312                 if( ret >= 0 ) {
 313                         ret = avformat_find_stream_info(fmt_ctx, 0);
 314                         st = fmt_ctx->streams[fidx];
 315                         load_markers();
 316                 }
 317                 if( ret >= 0 ) {
 318                         AVCodecID codec_id = st->codec->codec_id;
 319                         AVCodec *decoder = avcodec_find_decoder(codec_id);
 320                         ret = avcodec_open2(st->codec, decoder, &copts);
 321                         if( ret >= 0 )
 322                                 reading = 1;
 323                         else
 324                                 eprintf("FFStream::decode_activate: open decoder failed\n");
 325                 }
 326                 else
 327                         eprintf("FFStream::decode_activate: can't clone input file\n");
 328                 av_dict_free(&copts);
 329                 ff_unlock();
 330         }
 331         return reading;
 332 }
 333
 334 int FFStream::read_packet()
 335 {
 336         av_packet_unref(ipkt);
 337         int ret = av_read_frame(fmt_ctx, ipkt);
 338         if( ret < 0 ) {
 339                 st_eof(1);
 340                 if( ret == AVERROR_EOF ) {
 341                         ipkt->stream_index = st->index;
 342                         return 0;
 343                 }
 344                 ff_err(ret, "FFStream::read_packet: av_read_frame failed\n");
 345                 flushed = 1;
 346                 return -1;
 347         }
 348         return 1;
 349 }
 350
 351 int FFStream::decode(AVFrame *frame)
 352 {
 353         int ret = 0;
 354         int retries = MAX_RETRY;
 355         int got_frame = 0;
 356
 357         while( ret >= 0 && !flushed && --retries >= 0 && !got_frame ) {
 358                 if( need_packet ) {
 359                         need_packet = 0;
 360                         if( (ret=read_packet()) < 0 ) break;
 361                 }
 362                 if( ipkt->stream_index == st->index ) {
 363                         while( (ipkt->size > 0 || !ipkt->data) && !got_frame ) {
 364                                 ret = decode_frame(ipkt, frame, got_frame);
 365                                 if( ret <= 0 || !ipkt->data ) break;
 366                                 ipkt->data += ret;
 367                                 ipkt->size -= ret;
 368                         }
 369                         retries = MAX_RETRY;
 370                 }
 371                 if( !got_frame ) {
 372                         need_packet = 1;
 373                         flushed = st_eof();
 374                 }
 375         }
 376
 377         if( retries < 0 )
 378                 fprintf(stderr, "FFStream::decode: Retry limit\n");
 379         if( ret >= 0 )
 380                 ret = got_frame;
 381         else
 382                 fprintf(stderr, "FFStream::decode: failed\n");
 383
 384         return ret;
 385 }
 386
 387 int FFStream::load_filter(AVFrame *frame)
 388 {
 389         int ret = av_buffersrc_add_frame_flags(buffersrc_ctx,
 390                         frame, AV_BUFFERSRC_FLAG_KEEP_REF);
 391         if( ret < 0 ) {
 392                 av_frame_unref(frame);
 393                 eprintf("FFStream::load_filter: av_buffersrc_add_frame_flags failed\n");
 394         }
 395         return ret;
 396 }
 397
 398 int FFStream::read_filter(AVFrame *frame)
 399 {
 400         int ret = av_buffersink_get_frame(buffersink_ctx, frame);
 401         if( ret < 0 ) {
 402                 if( ret == AVERROR(EAGAIN) ) return 0;
 403                 if( ret == AVERROR_EOF ) { st_eof(1); return -1; }
 404                 ff_err(ret, "FFStream::read_filter: av_buffersink_get_frame failed\n");
 405                 return ret;
 406         }
 407         return 1;
 408 }
 409
 410 int FFStream::read_frame(AVFrame *frame)
 411 {
 412         if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
 413                 return decode(frame);
 414         if( !fframe && !(fframe=av_frame_alloc()) ) {
 415                 fprintf(stderr, "FFStream::read_frame: av_frame_alloc failed\n");
 416                 return -1;
 417         }
 418         int ret = -1;
 419         while( !flushed && !(ret=read_filter(frame)) ) {
 420                 if( (ret=decode(fframe)) < 0 ) break;
 421                 if( ret > 0 && (ret=load_filter(fframe)) < 0 ) break;
 422         }
 423         return ret;
 424 }
 425
 426 int FFStream::write_packet(FFPacket &pkt)
 427 {
 428         bs_filter(pkt);
 429         av_packet_rescale_ts(pkt, st->codec->time_base, st->time_base);
 430         pkt->stream_index = st->index;
 431         return av_interleaved_write_frame(ffmpeg->fmt_ctx, pkt);
 432 }
 433
 434 int FFStream::flush()
 435 {
 436         int ret = 0;
 437         while( ret >= 0 ) {
 438                 FFPacket pkt;
 439                 int got_packet = 0;
 440                 ret = encode_frame(pkt, 0, got_packet);
 441                 if( ret < 0 || !got_packet ) break;
 442                 ret = write_packet(pkt);
 443         }
 444         if( ret < 0 )
 445                 ff_err(ret, "FFStream::flush");
 446         return ret >= 0 ? 0 : 1;
 447 }
 448
 449 int FFStream::seek(int64_t no, double rate)
 450 {
 451         if( no < 0 ) no = 0;
 452 // default ffmpeg native seek
 453         int npkts = 1;
 454         int64_t pos = no, plmt = -1;
 455         if( index_markers && index_markers->size() > 1 ) {
 456                 IndexMarks &marks = *index_markers;
 457                 int i = marks.find(pos);
 458                 int64_t n = i < 0 ? (i=0) : marks[i].no;
 459 // if indexed seek point not too far away (<30 secs), use index
 460                 if( no-n < 30*rate ) {
 461                         if( n < 0 ) n = 0;
 462                         pos = n;
 463                         plmt = marks[i].pos;
 464                         npkts = MAX_RETRY;
 465                 }
 466         }
 467         double secs = pos / rate;
 468         int64_t pkt_ts, tstmp = secs * st->time_base.den / st->time_base.num;
 469         if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 470         int ret = avformat_seek_file(fmt_ctx, st->index,
 471                 -INT64_MAX, tstmp, INT64_MAX, AVSEEK_FLAG_ANY);
 472         if( ret >= 0 ) {
 473                 avcodec_flush_buffers(st->codec);
 474                 need_packet = 0;  flushed = 0;
 475                 seeked = 1;  st_eof(0);
 476 // read up to retry packets, limited to npkts in stream, and not past pkt.pos plmt
 477                 for( int retry=MAX_RETRY; ret>=0 && --retry>=0; ) {
 478                         if( read_packet() <= 0 || ( plmt >= 0 && ipkt->pos > plmt ) ) {
 479                                 ret = -1;  break;
 480                         }
 481                         if( ipkt->stream_index != st->index ) continue;
 482                         if( --npkts <= 0 ) break;
 483                         if( (pkt_ts=ipkt->dts) == AV_NOPTS_VALUE &&
 484                             (pkt_ts=ipkt->pts) == AV_NOPTS_VALUE ) continue;
 485                         if( pkt_ts >= tstmp ) break;
 486                 }
 487         }
 488         if( ret < 0 ) {
 489 //printf("** seek fail %ld, %ld\n", pos, tstmp);
 490                 seeked = need_packet = 0;
 491                 st_eof(flushed=1);
 492                 return -1;
 493         }
 494 //printf("seeked pos = %ld, %ld\n", pos, tstmp);
 495         seek_pos = curr_pos = pos;
 496         return 0;
 497 }
 498
 499 FFAudioStream::FFAudioStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 500  : FFStream(ffmpeg, strm, fidx)
 501 {
 502         this->idx = idx;
 503         channel0 = channels = 0;
 504         sample_rate = 0;
 505         mbsz = 0;
 506         length = 0;
 507         resample_context = 0;
 508
 509         aud_bfr_sz = 0;
 510         aud_bfr = 0;
 511
 512 // history buffer
 513         nch = 2;
 514         sz = 0x10000;
 515         long bsz = sz * nch;
 516         bfr = new float[bsz];
 517         lmt = bfr + bsz;
 518         reset_history();
 519 }
 520
 521 FFAudioStream::~FFAudioStream()
 522 {
 523         if( resample_context ) swr_free(&resample_context);
 524         delete [] aud_bfr;
 525         delete [] bfr;
 526 }
 527
 528 int FFAudioStream::get_samples(float *&samples, uint8_t **data, int len)
 529 {
 530         samples = *(float **)data;
 531         if( resample_context ) {
 532                 if( len > aud_bfr_sz ) {
 533                         delete [] aud_bfr;
 534                         aud_bfr = 0;
 535                 }
 536                 if( !aud_bfr ) {
 537                         aud_bfr_sz = len;
 538                         aud_bfr = new float[aud_bfr_sz*channels];
 539                 }
 540                 int ret = swr_convert(resample_context,
 541                         (uint8_t**)&aud_bfr, aud_bfr_sz, (const uint8_t**)data, len);
 542                 if( ret < 0 ) {
 543                         ff_err(ret, "FFAudioStream::get_samples: swr_convert failed\n");
 544                         return -1;
 545                 }
 546                 samples = aud_bfr;
 547                 len = ret;
 548         }
 549         return len;
 550 }
 551
 552 int FFAudioStream::load_history(uint8_t **data, int len)
 553 {
 554         float *samples;
 555         len = get_samples(samples, data, len);
 556         if( len > 0 ) {
 557                 // biggest user bfr since seek + frame
 558                 realloc(mbsz + len + 1, channels);
 559                 write(samples, len);
 560         }
 561         return len;
 562 }
 563
 564 int FFAudioStream::decode_frame(AVPacket *pkt, AVFrame *frame, int &got_frame)
 565 {
 566         int first_frame = seeked;  seeked = 0;
 567         int ret = avcodec_decode_audio4(st->codec, frame, &got_frame, pkt);
 568         if( ret < 0 ) {
 569                 if( first_frame ) return 0;
 570                 ff_err(ret, "FFAudioStream::decode_frame: Could not read audio frame\n");
 571                 return -1;
 572         }
 573         if( got_frame ) {
 574                 int64_t pkt_ts = av_frame_get_best_effort_timestamp(frame);
 575                 if( pkt_ts != AV_NOPTS_VALUE )
 576                         curr_pos = ffmpeg->to_secs(pkt_ts - nudge, st->time_base) * sample_rate + 0.5;
 577         }
 578         return ret;
 579 }
 580
 581 int FFAudioStream::encode_activate()
 582 {
 583         if( writing >= 0 ) return writing;
 584         AVCodecContext *ctx = st->codec;
 585         frame_sz = ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 586                 10000 : ctx->frame_size;
 587         return FFStream::encode_activate();
 588 }
 589
 590 int FFAudioStream::nb_samples()
 591 {
 592         AVCodecContext *ctx = st->codec;
 593         return ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 594                 10000 : ctx->frame_size;
 595 }
 596
 597 int64_t FFAudioStream::load_buffer(double ** const sp, int len)
 598 {
 599         reserve(len+1, st->codec->channels);
 600         for( int ch=0; ch<nch; ++ch )
 601                 write(sp[ch], len, ch);
 602         return put_inp(len);
 603 }
 604
 605 int FFAudioStream::in_history(int64_t pos)
 606 {
 607         if( pos > curr_pos ) return 0;
 608         int64_t len = hpos;
 609         if( len > sz ) len = sz;
 610         if( pos < curr_pos - len ) return 0;
 611         return 1;
 612 }
 613
 614
 615 int FFAudioStream::init_frame(AVFrame *frame)
 616 {
 617         AVCodecContext *ctx = st->codec;
 618         frame->nb_samples = frame_sz;
 619         frame->format = ctx->sample_fmt;
 620         frame->channel_layout = ctx->channel_layout;
 621         frame->sample_rate = ctx->sample_rate;
 622         int ret = av_frame_get_buffer(frame, 0);
 623         if (ret < 0)
 624                 ff_err(ret, "FFAudioStream::init_frame: av_frame_get_buffer failed\n");
 625         return ret;
 626 }
 627
 628 int FFAudioStream::load(int64_t pos, int len)
 629 {
 630         if( audio_seek(pos) < 0 ) return -1;
 631         if( !frame && !(frame=av_frame_alloc()) ) {
 632                 fprintf(stderr, "FFAudioStream::load: av_frame_alloc failed\n");
 633                 return -1;
 634         }
 635         if( mbsz < len ) mbsz = len;
 636         int64_t end_pos = pos + len;
 637         int ret = 0;
 638         for( int i=0; ret>=0 && !flushed && curr_pos<end_pos && i<MAX_RETRY; ++i ) {
 639                 ret = read_frame(frame);
 640                 if( ret > 0 ) {
 641                         load_history(&frame->extended_data[0], frame->nb_samples);
 642                         curr_pos += frame->nb_samples;
 643                 }
 644         }
 645         if( end_pos > curr_pos ) {
 646                 zero(end_pos - curr_pos);
 647                 curr_pos = end_pos;
 648         }
 649         len = curr_pos - pos;
 650         iseek(len);
 651         return len;
 652 }
 653
 654 int FFAudioStream::audio_seek(int64_t pos)
 655 {
 656         if( decode_activate() < 0 ) return -1;
 657         if( !st->codec || !st->codec->codec ) return -1;
 658         if( in_history(pos) ) return 0;
 659         if( pos == curr_pos ) return 0;
 660         reset_history();  mbsz = 0;
 661 // guarentee preload > 1sec samples
 662         if( seek(pos-sample_rate, sample_rate) < 0 ) return -1;
 663         return 1;
 664 }
 665
 666 int FFAudioStream::encode(double **samples, int len)
 667 {
 668         if( encode_activate() <= 0 ) return -1;
 669         ffmpeg->flow_ctl();
 670         int ret = 0;
 671         int64_t count = load_buffer(samples, len);
 672         FFrame *frm = 0;
 673
 674         while( ret >= 0 && count >= frame_sz ) {
 675                 frm = new FFrame(this);
 676                 if( (ret=frm->initted()) < 0 ) break;
 677                 AVFrame *frame = *frm;
 678                 float *bfrp = get_outp(frame_sz);
 679                 ret =  swr_convert(resample_context,
 680                         (uint8_t **)frame->extended_data, frame_sz,
 681                         (const uint8_t **)&bfrp, frame_sz);
 682                 if( ret < 0 ) {
 683                         ff_err(ret, "FFAudioStream::encode: swr_convert failed\n");
 684                         break;
 685                 }
 686                 frm->queue(curr_pos);
 687                 frm = 0;
 688                 curr_pos += frame_sz;
 689                 count -= frame_sz;
 690         }
 691
 692         delete frm;
 693         return ret >= 0 ? 0 : 1;
 694 }
 695
 696 int FFAudioStream::encode_frame(AVPacket *pkt, AVFrame *frame, int &got_packet)
 697 {
 698         int ret = avcodec_encode_audio2(st->codec, pkt, frame, &got_packet);
 699         if( ret < 0 ) {
 700                 ff_err(ret, "FFAudioStream::encode_frame: encode audio failed\n");
 701                 return -1;
 702         }
 703         return ret;
 704 }
 705
 706 void FFAudioStream::load_markers()
 707 {
 708         IndexState *index_state = ffmpeg->file_base->asset->index_state;
 709         if( !index_state || idx >= index_state->audio_markers.size() ) return;
 710         FFStream::load_markers(*index_state->audio_markers[idx], sample_rate);
 711 }
 712
 713 FFVideoStream::FFVideoStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 714  : FFStream(ffmpeg, strm, fidx)
 715 {
 716         this->idx = idx;
 717         width = height = 0;
 718         frame_rate = 0;
 719         aspect_ratio = 0;
 720         length = 0;
 721 }
 722
 723 FFVideoStream::~FFVideoStream()
 724 {
 725 }
 726
 727 int FFVideoStream::decode_frame(AVPacket *pkt, AVFrame *frame, int &got_frame)
 728 {
 729         int first_frame = seeked;  seeked = 0;
 730         int ret = avcodec_decode_video2(st->codec, frame, &got_frame, pkt);
 731         if( ret < 0 ) {
 732                 if( first_frame ) return 0;
 733                 ff_err(ret, "FFVideoStream::decode_frame: Could not read video frame\n");
 734                 return -1;
 735         }
 736         if( got_frame ) {
 737                 int64_t pkt_ts = av_frame_get_best_effort_timestamp(frame);
 738                 if( pkt_ts != AV_NOPTS_VALUE )
 739                         curr_pos = ffmpeg->to_secs(pkt_ts - nudge, st->time_base) * frame_rate + 0.5;
 740         }
 741         return ret;
 742 }
 743
 744 int FFVideoStream::load(VFrame *vframe, int64_t pos)
 745 {
 746         int ret = video_seek(pos);
 747         if( ret < 0 ) return -1;
 748         if( !frame && !(frame=av_frame_alloc()) ) {
 749                 fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
 750                 return -1;
 751         }
 752         for( int i=0; ret>=0 && !flushed && curr_pos<=pos && i<MAX_RETRY; ++i ) {
 753                 ret = read_frame(frame);
 754                 if( ret > 0 ) ++curr_pos;
 755         }
 756         if( ret >= 0 ) {
 757                 AVCodecContext *ctx = st->codec;
 758                 ret = convert_cmodel(vframe, (AVPicture *)frame,
 759                         ctx->pix_fmt, ctx->width, ctx->height);
 760         }
 761         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
 762         return ret;
 763 }
 764
 765 int FFVideoStream::video_seek(int64_t pos)
 766 {
 767         if( decode_activate() < 0 ) return -1;
 768         if( !st->codec || !st->codec->codec ) return -1;
 769         if( pos == curr_pos-1 && !seeked ) return 0;
 770 // if close enough, just read up to current
 771         int gop = st->codec->gop_size;
 772         if( gop < 4 ) gop = 4;
 773         if( gop > 64 ) gop = 64;
 774         int read_limit = curr_pos + 3*gop;
 775         if( pos >= curr_pos && pos <= read_limit ) return 0;
 776 // guarentee preload more than 2*gop frames
 777         if( seek(pos - 3*gop, frame_rate) < 0 ) return -1;
 778         return 1;
 779 }
 780
 781 int FFVideoStream::init_frame(AVFrame *picture)
 782 {
 783         AVCodecContext *ctx = st->codec;
 784         picture->format = ctx->pix_fmt;
 785         picture->width  = ctx->width;
 786         picture->height = ctx->height;
 787         int ret = av_frame_get_buffer(picture, 32);
 788         return ret;
 789 }
 790
 791 int FFVideoStream::encode(VFrame *vframe)
 792 {
 793         if( encode_activate() <= 0 ) return -1;
 794         ffmpeg->flow_ctl();
 795         FFrame *picture = new FFrame(this);
 796         int ret = picture->initted();
 797         if( ret >= 0 ) {
 798                 AVFrame *frame = *picture;
 799                 frame->pts = curr_pos;
 800                 AVCodecContext *ctx = st->codec;
 801                 ret = convert_pixfmt(vframe, (AVPicture*)frame,
 802                         ctx->pix_fmt, ctx->width, ctx->height);
 803         }
 804         if( ret >= 0 ) {
 805                 picture->queue(curr_pos);
 806                 ++curr_pos;
 807         }
 808         else {
 809                 fprintf(stderr, "FFVideoStream::encode: encode failed\n");
 810                 delete picture;
 811         }
 812         return ret >= 0 ? 0 : 1;
 813 }
 814
 815 int FFVideoStream::encode_frame(AVPacket *pkt, AVFrame *frame, int &got_packet)
 816 {
 817         int ret = avcodec_encode_video2(st->codec, pkt, frame, &got_packet);
 818         if( ret < 0 ) {
 819                 ff_err(ret, "FFVideoStream::encode_frame: encode video failed\n");
 820                 return -1;
 821         }
 822         return ret;
 823 }
 824
 825 PixelFormat FFVideoConvert::color_model_to_pix_fmt(int color_model)
 826 {
 827         switch( color_model ) {
 828         case BC_YUV422:         return AV_PIX_FMT_YUYV422;
 829         case BC_RGB888:         return AV_PIX_FMT_RGB24;
 830         case BC_RGBA8888:       return AV_PIX_FMT_RGBA;
 831         case BC_BGR8888:        return AV_PIX_FMT_BGR0;
 832         case BC_BGR888:         return AV_PIX_FMT_BGR24;
 833         case BC_YUV420P:        return AV_PIX_FMT_YUV420P;
 834         case BC_YUV422P:        return AV_PIX_FMT_YUV422P;
 835         case BC_YUV444P:        return AV_PIX_FMT_YUV444P;
 836         case BC_YUV411P:        return AV_PIX_FMT_YUV411P;
 837         case BC_RGB565:         return AV_PIX_FMT_RGB565;
 838         case BC_RGB161616:      return AV_PIX_FMT_RGB48LE;
 839         case BC_RGBA16161616:   return AV_PIX_FMT_RGBA64LE;
 840         default: break;
 841         }
 842
 843         return AV_PIX_FMT_NB;
 844 }
 845
 846 int FFVideoConvert::pix_fmt_to_color_model(PixelFormat pix_fmt)
 847 {
 848         switch (pix_fmt) {
 849         case AV_PIX_FMT_YUYV422:        return BC_YUV422;
 850         case AV_PIX_FMT_RGB24:          return BC_RGB888;
 851         case AV_PIX_FMT_RGBA:           return BC_RGBA8888;
 852         case AV_PIX_FMT_BGR0:           return BC_BGR8888;
 853         case AV_PIX_FMT_BGR24:          return BC_BGR888;
 854         case AV_PIX_FMT_YUV420P:        return BC_YUV420P;
 855         case AV_PIX_FMT_YUV422P:        return BC_YUV422P;
 856         case AV_PIX_FMT_YUV444P:        return BC_YUV444P;
 857         case AV_PIX_FMT_YUV411P:        return BC_YUV411P;
 858         case AV_PIX_FMT_RGB565:         return BC_RGB565;
 859         case AV_PIX_FMT_RGB48LE:        return BC_RGB161616;
 860         case AV_PIX_FMT_RGBA64LE:       return BC_RGBA16161616;
 861         default: break;
 862         }
 863
 864         return BC_TRANSPARENCY;
 865 }
 866
 867 int FFVideoConvert::convert_picture_vframe(VFrame *frame,
 868                 AVPicture *ip, PixelFormat ifmt, int iw, int ih)
 869 {
 870         AVPicture opic;
 871         int cmodel = frame->get_color_model();
 872         PixelFormat ofmt = color_model_to_pix_fmt(cmodel);
 873         if( ofmt == AV_PIX_FMT_NB ) return -1;
 874         int size = avpicture_fill(&opic, frame->get_data(), ofmt,
 875                                   frame->get_w(), frame->get_h());
 876         if( size < 0 ) return -1;
 877
 878         // transfer line sizes must match also
 879         int planar = BC_CModels::is_planar(cmodel);
 880         int packed_width = !planar ? frame->get_bytes_per_line() :
 881                  BC_CModels::calculate_pixelsize(cmodel) * frame->get_w();
 882         if( packed_width != opic.linesize[0] )  return -1;
 883
 884         if( planar ) {
 885                 // override avpicture_fill() for planar types
 886                 opic.data[0] = frame->get_y();
 887                 opic.data[1] = frame->get_u();
 888                 opic.data[2] = frame->get_v();
 889         }
 890
 891         convert_ctx = sws_getCachedContext(convert_ctx, iw, ih, ifmt,
 892                 frame->get_w(), frame->get_h(), ofmt, SWS_BICUBIC, NULL, NULL, NULL);
 893         if( !convert_ctx ) {
 894                 fprintf(stderr, "FFVideoConvert::convert_picture_frame:"
 895                                 " sws_getCachedContext() failed\n");
 896                 return -1;
 897         }
 898         int ret = sws_scale(convert_ctx, ip->data, ip->linesize, 0, ih,
 899             opic.data, opic.linesize);
 900         if( ret < 0 ) {
 901                 ff_err(ret, "FFVideoConvert::convert_picture_frame: sws_scale() failed\n");
 902                 return -1;
 903         }
 904         return 0;
 905 }
 906
 907 int FFVideoConvert::convert_cmodel(VFrame *frame,
 908                  AVPicture *ip, PixelFormat ifmt, int iw, int ih)
 909 {
 910         // try direct transfer
 911         if( !convert_picture_vframe(frame, ip, ifmt, iw, ih) ) return 1;
 912         // use indirect transfer
 913         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ifmt);
 914         int max_bits = 0;
 915         for( int i = 0; i <desc->nb_components; ++i ) {
 916                 int bits = desc->comp[i].depth_minus1 + 1;
 917                 if( bits > max_bits ) max_bits = bits;
 918         }
 919 // from libavcodec/pixdesc.c
 920 #define pixdesc_has_alpha(pixdesc) ((pixdesc)->nb_components == 2 || \
 921  (pixdesc)->nb_components == 4 || (pixdesc)->flags & AV_PIX_FMT_FLAG_PAL)
 922         int icolor_model = pixdesc_has_alpha(desc) ?
 923                 (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
 924                 (max_bits > 8 ? BC_RGB161616 : BC_RGB888) ;
 925         VFrame vframe(iw, ih, icolor_model);
 926         if( convert_picture_vframe(&vframe, ip, ifmt, iw, ih) ) return -1;
 927         frame->transfer_from(&vframe);
 928         return 1;
 929 }
 930
 931 int FFVideoConvert::transfer_cmodel(VFrame *frame,
 932                  AVFrame *ifp, PixelFormat ifmt, int iw, int ih)
 933 {
 934         int ret = convert_cmodel(frame, (AVPicture *)ifp, ifmt, iw, ih);
 935         if( ret > 0 ) {
 936                 const AVDictionary *src = av_frame_get_metadata(ifp);
 937                 AVDictionaryEntry *t = NULL;
 938                 BC_Hash *hp = frame->get_params();
 939                 //hp->clear();
 940                 while( (t=av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)) )
 941                         hp->update(t->key, t->value);
 942         }
 943         return ret;
 944 }
 945
 946 int FFVideoConvert::convert_vframe_picture(VFrame *frame,
 947                 AVPicture *op, PixelFormat ofmt, int ow, int oh)
 948 {
 949         AVPicture opic;
 950         int cmodel = frame->get_color_model();
 951         PixelFormat ifmt = color_model_to_pix_fmt(cmodel);
 952         if( ifmt == AV_PIX_FMT_NB ) return -1;
 953         int size = avpicture_fill(&opic, frame->get_data(), ifmt,
 954                                   frame->get_w(), frame->get_h());
 955         if( size < 0 ) return -1;
 956
 957         // transfer line sizes must match also
 958         int planar = BC_CModels::is_planar(cmodel);
 959         int packed_width = !planar ? frame->get_bytes_per_line() :
 960                  BC_CModels::calculate_pixelsize(cmodel) * frame->get_w();
 961         if( packed_width != opic.linesize[0] )  return -1;
 962
 963         if( planar ) {
 964                 // override avpicture_fill() for planar types
 965                 opic.data[0] = frame->get_y();
 966                 opic.data[1] = frame->get_u();
 967                 opic.data[2] = frame->get_v();
 968         }
 969
 970         convert_ctx = sws_getCachedContext(convert_ctx, frame->get_w(), frame->get_h(), ifmt,
 971                 ow, oh, ofmt, SWS_BICUBIC, NULL, NULL, NULL);
 972         if( !convert_ctx ) {
 973                 fprintf(stderr, "FFVideoConvert::convert_frame_picture:"
 974                                 " sws_getCachedContext() failed\n");
 975                 return -1;
 976         }
 977         int ret = sws_scale(convert_ctx, opic.data, opic.linesize, 0, frame->get_h(),
 978                         op->data, op->linesize);
 979         if( ret < 0 ) {
 980                 ff_err(ret, "FFVideoConvert::convert_frame_picture: sws_scale() failed\n");
 981                 return -1;
 982         }
 983         return 0;
 984 }
 985
 986 int FFVideoConvert::convert_pixfmt(VFrame *frame,
 987                  AVPicture *op, PixelFormat ofmt, int ow, int oh)
 988 {
 989         // try direct transfer
 990         if( !convert_vframe_picture(frame, op, ofmt, ow, oh) ) return 1;
 991         // use indirect transfer
 992         int colormodel = frame->get_color_model();
 993         int bits = BC_CModels::calculate_pixelsize(colormodel) * 8;
 994         bits /= BC_CModels::components(colormodel);
 995         int icolor_model =  BC_CModels::has_alpha(colormodel) ?
 996                 (bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
 997                 (bits > 8 ? BC_RGB161616: BC_RGB888) ;
 998         VFrame vframe(frame->get_w(), frame->get_h(), icolor_model);
 999         vframe.transfer_from(frame);
1000         if( !convert_vframe_picture(&vframe, op, ofmt, ow, oh) ) return 1;
1001         return -1;
1002 }
1003
1004 int FFVideoConvert::transfer_pixfmt(VFrame *frame,
1005                  AVFrame *ofp, PixelFormat ofmt, int ow, int oh)
1006 {
1007         int ret = convert_pixfmt(frame, (AVPicture *)ofp, ofmt, ow, oh);
1008         if( ret > 0 ) {
1009                 BC_Hash *hp = frame->get_params();
1010                 AVDictionary **dict = avpriv_frame_get_metadatap(ofp);
1011                 //av_dict_free(dict);
1012                 for( int i=0; i<hp->size(); ++i ) {
1013                         char *key = hp->get_key(i), *val = hp->get_value(i);
1014                         av_dict_set(dict, key, val, 0);
1015                 }
1016         }
1017         return ret;
1018 }
1019
1020 void FFVideoStream::load_markers()
1021 {
1022         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1023         if( idx >= index_state->video_markers.size() ) return;
1024         FFStream::load_markers(*index_state->video_markers[idx], frame_rate);
1025 }
1026
1027
1028 FFMPEG::FFMPEG(FileBase *file_base)
1029 {
1030         fmt_ctx = 0;
1031         this->file_base = file_base;
1032         memset(file_format,0,sizeof(file_format));
1033         mux_lock = new Condition(0,"FFMPEG::mux_lock",0);
1034         flow_lock = new Condition(1,"FFStream::flow_lock",0);
1035         done = -1;
1036         flow = 1;
1037         decoding = encoding = 0;
1038         has_audio = has_video = 0;
1039         opts = 0;
1040         opt_duration = -1;
1041         opt_video_filter = 0;
1042         opt_audio_filter = 0;
1043         char option_path[BCTEXTLEN];
1044         set_option_path(option_path, "%s", "ffmpeg.opts");
1045         read_options(option_path, opts);
1046 }
1047
1048 FFMPEG::~FFMPEG()
1049 {
1050         ff_lock("FFMPEG::~FFMPEG()");
1051         close_encoder();
1052         ffaudio.remove_all_objects();
1053         ffvideo.remove_all_objects();
1054         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
1055         ff_unlock();
1056         delete flow_lock;
1057         delete mux_lock;
1058         av_dict_free(&opts);
1059         delete [] opt_video_filter;
1060         delete [] opt_audio_filter;
1061 }
1062
1063 int FFMPEG::check_sample_rate(AVCodec *codec, int sample_rate)
1064 {
1065         const int *p = codec->supported_samplerates;
1066         if( !p ) return sample_rate;
1067         while( *p != 0 ) {
1068                 if( *p == sample_rate ) return *p;
1069                 ++p;
1070         }
1071         return 0;
1072 }
1073
1074 static inline AVRational std_frame_rate(int i)
1075 {
1076         static const int m1 = 1001*12, m2 = 1000*12;
1077         static const int freqs[] = {
1078                 40*m1, 48*m1, 50*m1, 60*m1, 80*m1,120*m1, 240*m1,
1079                 24*m2, 30*m2, 60*m2, 12*m2, 15*m2, 48*m2, 0,
1080         };
1081         int freq = i<30*12 ? (i+1)*1001 : freqs[i-30*12];
1082         return (AVRational) { freq, 1001*12 };
1083 }
1084
1085 AVRational FFMPEG::check_frame_rate(AVCodec *codec, double frame_rate)
1086 {
1087         const AVRational *p = codec->supported_framerates;
1088         AVRational rate, best_rate = (AVRational) { 0, 0 };
1089         double max_err = 1.;  int i = 0;
1090         while( ((p ? (rate=*p++) : (rate=std_frame_rate(i++))), rate.num) != 0 ) {
1091                 double framerate = (double) rate.num / rate.den;
1092                 double err = fabs(frame_rate/framerate - 1.);
1093                 if( err >= max_err ) continue;
1094                 max_err = err;
1095                 best_rate = rate;
1096         }
1097         return max_err < 0.0001 ? best_rate : (AVRational) { 0, 0 };
1098 }
1099
1100 AVRational FFMPEG::to_sample_aspect_ratio(Asset *asset)
1101 {
1102 #if 1
1103         double display_aspect = asset->width / (double)asset->height;
1104         double sample_aspect = asset->aspect_ratio / display_aspect;
1105         int width = 1000000, height = width * sample_aspect + 0.5;
1106         float w, h;
1107         MWindow::create_aspect_ratio(w, h, width, height);
1108         return (AVRational){(int)h, (int)w};
1109 #else
1110 // square pixels
1111         return (AVRational){1, 1};
1112 #endif
1113 }
1114
1115 AVRational FFMPEG::to_time_base(int sample_rate)
1116 {
1117         return (AVRational){1, sample_rate};
1118 }
1119
1120 void FFMPEG::set_option_path(char *path, const char *fmt, ...)
1121 {
1122         get_exe_path(path);
1123         strcat(path, "/ffmpeg/");
1124         path += strlen(path);
1125         va_list ap;
1126         va_start(ap, fmt);
1127         vsprintf(path, fmt, ap);
1128         va_end(ap);
1129 }
1130
1131 void FFMPEG::get_option_path(char *path, const char *type, const char *spec)
1132 {
1133         if( *spec == '/' )
1134                 strcpy(path, spec);
1135         else
1136                 set_option_path(path, "%s/%s", type, spec);
1137 }
1138
1139 int FFMPEG::get_format(char *format, const char *path, char *spec)
1140 {
1141         char option_path[BCTEXTLEN], line[BCTEXTLEN], codec[BCTEXTLEN];
1142         get_option_path(option_path, path, spec);
1143         FILE *fp = fopen(option_path,"r");
1144         if( !fp ) return 1;
1145         int ret = 0;
1146         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1147         if( !ret ) {
1148                 line[sizeof(line)-1] = 0;
1149                 ret = scan_option_line(line, format, codec);
1150         }
1151         fclose(fp);
1152         return ret;
1153 }
1154
1155 int FFMPEG::get_file_format()
1156 {
1157         int ret = 0;
1158         char audio_format[BCSTRLEN], video_format[BCSTRLEN];
1159         file_format[0] = audio_format[0] = video_format[0] = 0;
1160         Asset *asset = file_base->asset;
1161         if( !ret && asset->audio_data )
1162                 ret = get_format(audio_format, "audio", asset->acodec);
1163         if( !ret && asset->video_data )
1164                 ret = get_format(video_format, "video", asset->vcodec);
1165         if( !ret && !audio_format[0] && !video_format[0] )
1166                 ret = 1;
1167         if( !ret && audio_format[0] && video_format[0] &&
1168             strcmp(audio_format, video_format) ) ret = -1;
1169         if( !ret )
1170                 strcpy(file_format, audio_format[0] ? audio_format : video_format);
1171         return ret;
1172 }
1173
1174 int FFMPEG::scan_option_line(char *cp, char *tag, char *val)
1175 {
1176         while( *cp == ' ' || *cp == '\t' ) ++cp;
1177         char *bp = cp;
1178         while( *cp && *cp != ' ' && *cp != '\t' && *cp != '=' ) ++cp;
1179         int len = cp - bp;
1180         if( !len || len > BCSTRLEN-1 ) return 1;
1181         while( bp < cp ) *tag++ = *bp++;
1182         *tag = 0;
1183         while( *cp == ' ' || *cp == '\t' ) ++cp;
1184         if( *cp == '=' ) ++cp;
1185         while( *cp == ' ' || *cp == '\t' ) ++cp;
1186         bp = cp;
1187         while( *cp && *cp != '\n' ) ++cp;
1188         len = cp - bp;
1189         if( len > BCTEXTLEN-1 ) return 1;
1190         while( bp < cp ) *val++ = *bp++;
1191         *val = 0;
1192         return 0;
1193 }
1194
1195 int FFMPEG::get_encoder(const char *options,
1196                 char *format, char *codec, char *bsfilter, char *bsargs)
1197 {
1198         FILE *fp = fopen(options,"r");
1199         if( !fp ) {
1200                 eprintf("FFMPEG::get_encoder: options open failed %s\n",options);
1201                 return 1;
1202         }
1203         if( get_encoder(fp, format, codec, bsfilter, bsargs) )
1204                 eprintf(_("FFMPEG::get_encoder:"
1205                           " err: format/codec not found %s\n"), options);
1206         fclose(fp);
1207         return 0;
1208 }
1209
1210 int FFMPEG::get_encoder(FILE *fp,
1211                 char *format, char *codec, char *bsfilter, char *bsargs)
1212 {
1213         format[0] = codec[0] = bsfilter[0] = bsargs[0] = 0;
1214         char line[BCTEXTLEN];
1215         if( !fgets(line, sizeof(line), fp) ) return 1;
1216         line[sizeof(line)-1] = 0;
1217         if( scan_option_line(line, format, codec) ) return 1;
1218         char *cp = codec;
1219         while( *cp && *cp != '|' ) ++cp;
1220         if( !*cp ) return 0;
1221         if( scan_option_line(cp+1, bsfilter, bsargs) ) return 1;
1222         do { *cp-- = 0; } while( cp>=codec && (*cp==' ' || *cp == '\t' ) );
1223         return 0;
1224 }
1225
1226 int FFMPEG::read_options(const char *options, AVDictionary *&opts)
1227 {
1228         FILE *fp = fopen(options,"r");
1229         if( !fp ) return 1;
1230         int ret = read_options(fp, options, opts);
1231         fclose(fp);
1232         return ret;
1233 }
1234
1235 int FFMPEG::scan_options(const char *options, AVDictionary *&opts, AVStream *st)
1236 {
1237         FILE *fp = fmemopen((void *)options,strlen(options),"r");
1238         if( !fp ) return 0;
1239         int ret = read_options(fp, options, opts);
1240         fclose(fp);
1241         AVDictionaryEntry *tag = av_dict_get(opts, "id", NULL, 0);
1242         if( tag ) st->id = strtol(tag->value,0,0);
1243         return ret;
1244 }
1245
1246 int FFMPEG::read_options(FILE *fp, const char *options, AVDictionary *&opts)
1247 {
1248         int ret = 0, no = 0;
1249         char line[BCTEXTLEN];
1250         while( !ret && fgets(line, sizeof(line), fp) ) {
1251                 line[sizeof(line)-1] = 0;
1252                 ++no;
1253                 if( line[0] == '#' ) continue;
1254                 if( line[0] == '\n' ) continue;
1255                 char key[BCSTRLEN], val[BCTEXTLEN];
1256                 if( scan_option_line(line, key, val) ) {
1257                         eprintf(_("FFMPEG::read_options:"
1258                                   " err reading %s: line %d\n"), options, no);
1259                         ret = 1;
1260                 }
1261                 if( !ret ) {
1262                         if( !strcmp(key, "duration") )
1263                                 opt_duration = strtod(val, 0);
1264                         else if( !strcmp(key, "video_filter") )
1265                                 opt_video_filter = cstrdup(val);
1266                         else if( !strcmp(key, "audio_filter") )
1267                                 opt_audio_filter = cstrdup(val);
1268                         else if( !strcmp(key, "loglevel") )
1269                                 set_loglevel(val);
1270                         else
1271                                 av_dict_set(&opts, key, val, 0);
1272                 }
1273         }
1274         return ret;
1275 }
1276
1277 int FFMPEG::load_options(const char *options, AVDictionary *&opts)
1278 {
1279         char option_path[BCTEXTLEN];
1280         set_option_path(option_path, "%s", options);
1281         return read_options(option_path, opts);
1282 }
1283
1284 int FFMPEG::load_options(const char *path, char *bfr, int len)
1285 {
1286         *bfr = 0;
1287         FILE *fp = fopen(path, "r");
1288         if( !fp ) return 1;
1289         fgets(bfr, len, fp); // skip hdr
1290         len = fread(bfr, 1, len-1, fp);
1291         if( len < 0 ) len = 0;
1292         bfr[len] = 0;
1293         fclose(fp);
1294         return 0;
1295 }
1296
1297 void FFMPEG::set_loglevel(const char *ap)
1298 {
1299         if( !ap || !*ap ) return;
1300         const struct {
1301                 const char *name;
1302                 int level;
1303         } log_levels[] = {
1304                 { "quiet"  , AV_LOG_QUIET   },
1305                 { "panic"  , AV_LOG_PANIC   },
1306                 { "fatal"  , AV_LOG_FATAL   },
1307                 { "error"  , AV_LOG_ERROR   },
1308                 { "warning", AV_LOG_WARNING },
1309                 { "info"   , AV_LOG_INFO    },
1310                 { "verbose", AV_LOG_VERBOSE },
1311                 { "debug"  , AV_LOG_DEBUG   },
1312         };
1313         for( int i=0; i<(int)(sizeof(log_levels)/sizeof(log_levels[0])); ++i ) {
1314                 if( !strcmp(log_levels[i].name, ap) ) {
1315                         av_log_set_level(log_levels[i].level);
1316                         return;
1317                 }
1318         }
1319         av_log_set_level(atoi(ap));
1320 }
1321
1322 double FFMPEG::to_secs(int64_t time, AVRational time_base)
1323 {
1324         double base_time = time == AV_NOPTS_VALUE ? 0 :
1325                 av_rescale_q(time, time_base, AV_TIME_BASE_Q);
1326         return base_time / AV_TIME_BASE;
1327 }
1328
1329 int FFMPEG::info(char *text, int len)
1330 {
1331         if( len <= 0 ) return 0;
1332         decode_activate();
1333 #define report(s...) do { int n = snprintf(cp,len,s); cp += n;  len -= n; } while(0)
1334         char *cp = text;
1335         if( ffvideo.size() > 0 )
1336                 report("\n%d video stream%s\n",ffvideo.size(), ffvideo.size()!=1 ? "s" : "");
1337         for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
1338                 FFVideoStream *vid = ffvideo[vidx];
1339                 AVStream *st = vid->st;
1340                 AVCodecContext *avctx = st->codec;
1341                 report(_("vid%d (%d),  id 0x%06x:\n"), vid->idx, vid->fidx, avctx->codec_id);
1342                 const AVCodecDescriptor *desc = avcodec_descriptor_get(avctx->codec_id);
1343                 report("  video%d %s", vidx+1, desc ? desc->name : " (unkn)");
1344                 report(" %dx%d %5.2f", vid->width, vid->height, vid->frame_rate);
1345                 const char *pfn = av_get_pix_fmt_name(avctx->pix_fmt);
1346                 report(" pix %s\n", pfn ? pfn : "(unkn)");
1347                 double secs = to_secs(st->duration, st->time_base);
1348                 int64_t length = secs * vid->frame_rate + 0.5;
1349                 double ofs = to_secs((vid->nudge - st->start_time), st->time_base);
1350                 int64_t nudge = ofs * vid->frame_rate;
1351                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
1352                 report("    %jd%c%jd frms %0.2f secs", length,ch,nudge, secs);
1353                 int hrs = secs/3600;  secs -= hrs*3600;
1354                 int mins = secs/60;  secs -= mins*60;
1355                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1356         }
1357         if( ffaudio.size() > 0 )
1358                 report("\n%d audio stream%s\n",ffaudio.size(), ffaudio.size()!=1 ? "s" : "");
1359         for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
1360                 FFAudioStream *aud = ffaudio[aidx];
1361                 AVStream *st = aud->st;
1362                 AVCodecContext *avctx = st->codec;
1363                 report(_("aud%d (%d),  id 0x%06x:\n"), aud->idx, aud->fidx, avctx->codec_id);
1364                 const AVCodecDescriptor *desc = avcodec_descriptor_get(avctx->codec_id);
1365                 int nch = aud->channels, ch0 = aud->channel0+1;
1366                 report("  audio%d-%d %s", ch0, ch0+nch-1, desc ? desc->name : " (unkn)");
1367                 const char *fmt = av_get_sample_fmt_name(avctx->sample_fmt);
1368                 report(" %s %d", fmt, aud->sample_rate);
1369                 int sample_bits = av_get_bits_per_sample(avctx->codec_id);
1370                 report(" %dbits\n", sample_bits);
1371                 double secs = to_secs(st->duration, st->time_base);
1372                 int64_t length = secs * aud->sample_rate + 0.5;
1373                 double ofs = to_secs((aud->nudge - st->start_time), st->time_base);
1374                 int64_t nudge = ofs * aud->sample_rate;
1375                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
1376                 report("    %jd%c%jd smpl %0.2f secs", length,ch,nudge, secs);
1377                 int hrs = secs/3600;  secs -= hrs*3600;
1378                 int mins = secs/60;  secs -= mins*60;
1379                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1380         }
1381         if( fmt_ctx->nb_programs > 0 )
1382                 report("\n%d program%s\n",fmt_ctx->nb_programs, fmt_ctx->nb_programs!=1 ? "s" : "");
1383         for( int i=0; i<(int)fmt_ctx->nb_programs; ++i ) {
1384                 report("program %d", i+1);
1385                 AVProgram *pgrm = fmt_ctx->programs[i];
1386                 for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1387                         int idx = pgrm->stream_index[j];
1388                         int vidx = ffvideo.size();
1389                         while( --vidx>=0 && ffvideo[vidx]->fidx != idx );
1390                         if( vidx >= 0 ) {
1391                                 report(", vid%d", vidx);
1392                                 continue;
1393                         }
1394                         int aidx = ffaudio.size();
1395                         while( --aidx>=0 && ffaudio[aidx]->fidx != idx );
1396                         if( aidx >= 0 ) {
1397                                 report(", aud%d", aidx);
1398                                 continue;
1399                         }
1400                         report(", (%d)", pgrm->stream_index[j]);
1401                 }
1402                 report("\n");
1403         }
1404         report("\n");
1405         AVDictionaryEntry *tag = 0;
1406         while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
1407                 report("%s=%s\n", tag->key, tag->value);
1408
1409         if( !len ) --cp;
1410         *cp = 0;
1411         return cp - text;
1412 #undef report
1413 }
1414
1415
1416 int FFMPEG::init_decoder(const char *filename)
1417 {
1418         ff_lock("FFMPEG::init_decoder");
1419         av_register_all();
1420         char file_opts[BCTEXTLEN];
1421         char *bp = strrchr(strcpy(file_opts, filename), '/');
1422         char *sp = strrchr(!bp ? file_opts : bp, '.');
1423         FILE *fp = 0;
1424         if( sp ) {
1425                 strcpy(sp, ".opts");
1426                 fp = fopen(file_opts, "r");
1427         }
1428         if( fp ) {
1429                 read_options(fp, file_opts, opts);
1430                 fclose(fp);
1431         }
1432         else
1433                 load_options("decode.opts", opts);
1434         AVDictionary *fopts = 0;
1435         av_dict_copy(&fopts, opts, 0);
1436         int ret = avformat_open_input(&fmt_ctx, filename, NULL, &fopts);
1437         av_dict_free(&fopts);
1438         if( ret >= 0 )
1439                 ret = avformat_find_stream_info(fmt_ctx, NULL);
1440         if( !ret ) {
1441                 decoding = -1;
1442         }
1443         ff_unlock();
1444         return !ret ? 0 : 1;
1445 }
1446
1447 int FFMPEG::open_decoder()
1448 {
1449         struct stat st;
1450         if( stat(fmt_ctx->filename, &st) < 0 ) {
1451                 eprintf("FFMPEG::open_decoder: can't stat file: %s\n",
1452                         fmt_ctx->filename);
1453                 return 1;
1454         }
1455
1456         int64_t file_bits = 8 * st.st_size;
1457         if( !fmt_ctx->bit_rate && opt_duration > 0 )
1458                 fmt_ctx->bit_rate = file_bits / opt_duration;
1459
1460         int estimated = 0;
1461         if( fmt_ctx->bit_rate > 0 ) {
1462                 for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1463                         AVStream *st = fmt_ctx->streams[i];
1464                         if( st->duration != AV_NOPTS_VALUE ) continue;
1465                         if( st->time_base.num > INT64_MAX / fmt_ctx->bit_rate ) continue;
1466                         st->duration = av_rescale(file_bits, st->time_base.den,
1467                                 fmt_ctx->bit_rate * (int64_t) st->time_base.num);
1468                         estimated = 1;
1469                 }
1470         }
1471         if( estimated )
1472                 printf("FFMPEG::open_decoder: some stream times estimated\n");
1473
1474         ff_lock("FFMPEG::open_decoder");
1475         int bad_time = 0;
1476         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1477                 AVStream *st = fmt_ctx->streams[i];
1478                 if( st->duration == AV_NOPTS_VALUE ) bad_time = 1;
1479                 AVCodecContext *avctx = st->codec;
1480                 const AVCodecDescriptor *codec_desc = avcodec_descriptor_get(avctx->codec_id);
1481                 if( !codec_desc ) continue;
1482                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1483                         if( avctx->width < 1 ) continue;
1484                         if( avctx->height < 1 ) continue;
1485                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
1486                         if( framerate.num < 1 ) continue;
1487                         has_video = 1;
1488                         int vidx = ffvideo.size();
1489                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, i);
1490                         vstrm_index.append(ffidx(vidx, 0));
1491                         ffvideo.append(vid);
1492                         vid->width = avctx->width;
1493                         vid->height = avctx->height;
1494                         vid->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
1495                         double secs = to_secs(st->duration, st->time_base);
1496                         vid->length = secs * vid->frame_rate;
1497                         vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den;
1498                         vid->nudge = st->start_time;
1499                         vid->reading = -1;
1500                         if( opt_video_filter )
1501                                 vid->create_filter(opt_video_filter, avctx,avctx);
1502                 }
1503                 else if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1504                         if( avctx->channels < 1 ) continue;
1505                         if( avctx->sample_rate < 1 ) continue;
1506                         has_audio = 1;
1507                         int aidx = ffaudio.size();
1508                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, i);
1509                         ffaudio.append(aud);
1510                         aud->channel0 = astrm_index.size();
1511                         aud->channels = avctx->channels;
1512                         for( int ch=0; ch<aud->channels; ++ch )
1513                                 astrm_index.append(ffidx(aidx, ch));
1514                         aud->sample_rate = avctx->sample_rate;
1515                         double secs = to_secs(st->duration, st->time_base);
1516                         aud->length = secs * aud->sample_rate;
1517                         if( avctx->sample_fmt != AV_SAMPLE_FMT_FLT ) {
1518                                 uint64_t layout = av_get_default_channel_layout(avctx->channels);
1519                                 if( !layout ) layout = ((uint64_t)1<<aud->channels) - 1;
1520                                 aud->resample_context = swr_alloc_set_opts(NULL,
1521                                         layout, AV_SAMPLE_FMT_FLT, avctx->sample_rate,
1522                                         layout, avctx->sample_fmt, avctx->sample_rate,
1523                                         0, NULL);
1524                                 swr_init(aud->resample_context);
1525                         }
1526                         aud->nudge = st->start_time;
1527                         aud->reading = -1;
1528                         if( opt_audio_filter )
1529                                 aud->create_filter(opt_audio_filter, avctx,avctx);
1530                 }
1531         }
1532         if( bad_time )
1533                 printf("FFMPEG::open_decoder: some stream have bad times\n");
1534         ff_unlock();
1535         return 0;
1536 }
1537
1538
1539 int FFMPEG::init_encoder(const char *filename)
1540 {
1541         int fd = ::open(filename,O_WRONLY);
1542         if( fd < 0 ) fd = open(filename,O_WRONLY+O_CREAT,0666);
1543         if( fd < 0 ) {
1544                 eprintf("FFMPEG::init_encoder: bad file path: %s\n", filename);
1545                 return 1;
1546         }
1547         ::close(fd);
1548         int ret = get_file_format();
1549         if( ret > 0 ) {
1550                 eprintf("FFMPEG::init_encoder: bad file format: %s\n", filename);
1551                 return 1;
1552         }
1553         if( ret < 0 ) {
1554                 eprintf("FFMPEG::init_encoder: mismatch audio/video file format: %s\n", filename);
1555                 return 1;
1556         }
1557         ff_lock("FFMPEG::init_encoder");
1558         av_register_all();
1559         avformat_alloc_output_context2(&fmt_ctx, 0, file_format, filename);
1560         if( !fmt_ctx ) {
1561                 eprintf("FFMPEG::init_encoder: failed: %s\n", filename);
1562                 ret = 1;
1563         }
1564         if( !ret ) {
1565                 encoding = -1;
1566                 load_options("encode.opts", opts);
1567         }
1568         ff_unlock();
1569         start_muxer();
1570         return ret;
1571 }
1572
1573 int FFMPEG::open_encoder(const char *type, const char *spec)
1574 {
1575
1576         Asset *asset = file_base->asset;
1577         char *filename = asset->path;
1578         AVDictionary *sopts = 0;
1579         av_dict_copy(&sopts, opts, 0);
1580         char option_path[BCTEXTLEN];
1581         set_option_path(option_path, "%s/%s.opts", type, type);
1582         read_options(option_path, sopts);
1583         get_option_path(option_path, type, spec);
1584         char format_name[BCSTRLEN], codec_name[BCTEXTLEN];
1585         char bsfilter[BCSTRLEN], bsargs[BCTEXTLEN];
1586         if( get_encoder(option_path, format_name, codec_name, bsfilter, bsargs) ) {
1587                 eprintf("FFMPEG::open_encoder: get_encoder failed %s:%s\n",
1588                         option_path, filename);
1589                 return 1;
1590         }
1591
1592         if( !strcmp(codec_name, CODEC_TAG_DVSD) ) strcpy(codec_name, "dv");
1593         else if( !strcmp(codec_name, CODEC_TAG_MJPEG) ) strcpy(codec_name, "mjpeg");
1594         else if( !strcmp(codec_name, CODEC_TAG_JPEG) ) strcpy(codec_name, "jpeg");
1595
1596         int ret = 0;
1597         ff_lock("FFMPEG::open_encoder");
1598         FFStream *fst = 0;
1599         AVStream *st = 0;
1600
1601         const AVCodecDescriptor *codec_desc = 0;
1602         AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
1603         if( !codec ) {
1604                 eprintf("FFMPEG::open_encoder: cant find codec %s:%s\n",
1605                         codec_name, filename);
1606                 ret = 1;
1607         }
1608         if( !ret ) {
1609                 codec_desc = avcodec_descriptor_get(codec->id);
1610                 if( !codec_desc ) {
1611                         eprintf("FFMPEG::open_encoder: unknown codec %s:%s\n",
1612                                 codec_name, filename);
1613                         ret = 1;
1614                 }
1615         }
1616         if( !ret ) {
1617                 st = avformat_new_stream(fmt_ctx, 0);
1618                 if( !st ) {
1619                         eprintf("FFMPEG::open_encoder: cant create stream %s:%s\n",
1620                                 codec_name, filename);
1621                         ret = 1;
1622                 }
1623         }
1624         if( !ret ) {
1625                 AVCodecContext *ctx = st->codec;
1626                 switch( codec_desc->type ) {
1627                 case AVMEDIA_TYPE_AUDIO: {
1628                         if( has_audio ) {
1629                                 eprintf("FFMPEG::open_encoder: duplicate audio %s:%s\n",
1630                                         codec_name, filename);
1631                                 ret = 1;
1632                                 break;
1633                         }
1634                         has_audio = 1;
1635                         if( scan_options(asset->ff_audio_options, sopts, st) ) {
1636                                 eprintf("FFMPEG::open_encoder: bad audio options %s:%s\n",
1637                                         codec_name, filename);
1638                                 ret = 1;
1639                                 break;
1640                         }
1641                         if( asset->ff_audio_bitrate > 0 ) {
1642                                 ctx->bit_rate = asset->ff_audio_bitrate;
1643                                 char arg[BCSTRLEN];
1644                                 sprintf(arg, "%d", asset->ff_audio_bitrate);
1645                                 av_dict_set(&sopts, "b", arg, 0);
1646                         }
1647                         int aidx = ffaudio.size();
1648                         int fidx = aidx + ffvideo.size();
1649                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, fidx);
1650                         ffaudio.append(aud);  fst = aud;
1651                         aud->sample_rate = asset->sample_rate;
1652                         ctx->channels = aud->channels = asset->channels;
1653                         for( int ch=0; ch<aud->channels; ++ch )
1654                                 astrm_index.append(ffidx(aidx, ch));
1655                         ctx->channel_layout =  av_get_default_channel_layout(ctx->channels);
1656                         ctx->sample_rate = check_sample_rate(codec, asset->sample_rate);
1657                         if( !ctx->sample_rate ) {
1658                                 eprintf("FFMPEG::open_audio_encode:"
1659                                         " check_sample_rate failed %s\n", filename);
1660                                 ret = 1;
1661                                 break;
1662                         }
1663                         ctx->time_base = st->time_base = (AVRational){1, aud->sample_rate};
1664                         ctx->sample_fmt = codec->sample_fmts[0];
1665                         uint64_t layout = av_get_default_channel_layout(ctx->channels);
1666                         aud->resample_context = swr_alloc_set_opts(NULL,
1667                                 layout, ctx->sample_fmt, aud->sample_rate,
1668                                 layout, AV_SAMPLE_FMT_FLT, ctx->sample_rate,
1669                                 0, NULL);
1670                         swr_init(aud->resample_context);
1671                         aud->writing = -1;
1672                         break; }
1673                 case AVMEDIA_TYPE_VIDEO: {
1674                         if( has_video ) {
1675                                 eprintf("FFMPEG::open_encoder: duplicate video %s:%s\n",
1676                                         codec_name, filename);
1677                                 ret = 1;
1678                                 break;
1679                         }
1680                         has_video = 1;
1681                         if( scan_options(asset->ff_video_options, sopts, st) ) {
1682                                 eprintf("FFMPEG::open_encoder: bad video options %s:%s\n",
1683                                         codec_name, filename);
1684                                 ret = 1;
1685                                 break;
1686                         }
1687                         if( asset->ff_video_bitrate > 0 ) {
1688                                 ctx->bit_rate = asset->ff_video_bitrate;
1689                                 char arg[BCSTRLEN];
1690                                 sprintf(arg, "%d", asset->ff_video_bitrate);
1691                                 av_dict_set(&sopts, "b", arg, 0);
1692                         }
1693                         else if( asset->ff_video_quality > 0 ) {
1694                                 ctx->global_quality = asset->ff_video_quality * FF_QP2LAMBDA;
1695                                 ctx->qmin    = ctx->qmax =  asset->ff_video_quality;
1696                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
1697                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
1698                                 ctx->flags |= CODEC_FLAG_QSCALE;
1699                                 char arg[BCSTRLEN];
1700                                 av_dict_set(&sopts, "flags", "+qscale", 0);
1701                                 sprintf(arg, "%d", asset->ff_video_quality);
1702                                 av_dict_set(&sopts, "qscale", arg, 0);
1703                                 sprintf(arg, "%d", ctx->global_quality);
1704                                 av_dict_set(&sopts, "global_quality", arg, 0);
1705                         }
1706                         int vidx = ffvideo.size();
1707                         int fidx = vidx + ffaudio.size();
1708                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, fidx);
1709                         vstrm_index.append(ffidx(vidx, 0));
1710                         ffvideo.append(vid);  fst = vid;
1711                         vid->width = asset->width;
1712                         ctx->width = (vid->width+3) & ~3;
1713                         vid->height = asset->height;
1714                         ctx->height = (vid->height+3) & ~3;
1715                         vid->frame_rate = asset->frame_rate;
1716                         ctx->sample_aspect_ratio = to_sample_aspect_ratio(asset);
1717                         ctx->pix_fmt = codec->pix_fmts ? codec->pix_fmts[0] : AV_PIX_FMT_YUV420P;
1718                         AVRational frame_rate = check_frame_rate(codec, vid->frame_rate);
1719                         if( !frame_rate.num || !frame_rate.den ) {
1720                                 eprintf("FFMPEG::open_audio_encode:"
1721                                         " check_frame_rate failed %s\n", filename);
1722                                 ret = 1;
1723                                 break;
1724                         }
1725                         ctx->time_base = (AVRational) { frame_rate.den, frame_rate.num };
1726                         st->time_base = ctx->time_base;
1727                         vid->writing = -1;
1728                         break; }
1729                 default:
1730                         eprintf("FFMPEG::open_encoder: not audio/video, %s:%s\n",
1731                                 codec_name, filename);
1732                         ret = 1;
1733                 }
1734         }
1735         if( !ret ) {
1736                 if( fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER )
1737                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
1738
1739                 ret = avcodec_open2(st->codec, codec, &sopts);
1740                 if( ret < 0 ) {
1741                         ff_err(ret,"FFMPEG::open_encoder");
1742                         eprintf("FFMPEG::open_encoder: open failed %s:%s\n",
1743                                 codec_name, filename);
1744                         ret = 1;
1745                 }
1746                 else
1747                         ret = 0;
1748         }
1749         if( !ret ) {
1750                 if( fst && bsfilter[0] )
1751                         fst->add_bsfilter(bsfilter, !bsargs[0] ? 0 : bsargs);
1752         }
1753
1754         ff_unlock();
1755         av_dict_free(&sopts);
1756         return ret;
1757 }
1758
1759 int FFMPEG::close_encoder()
1760 {
1761         stop_muxer();
1762         if( encoding > 0 ) {
1763                 av_write_trailer(fmt_ctx);
1764                 if( !(fmt_ctx->flags & AVFMT_NOFILE) )
1765                         avio_closep(&fmt_ctx->pb);
1766         }
1767         encoding = 0;
1768         return 0;
1769 }
1770
1771 int FFMPEG::decode_activate()
1772 {
1773         if( decoding < 0 ) {
1774                 decoding = 0;
1775                 for( int vidx=0; vidx<ffvideo.size(); ++vidx )
1776                         ffvideo[vidx]->nudge = AV_NOPTS_VALUE;
1777                 for( int aidx=0; aidx<ffaudio.size(); ++aidx )
1778                         ffaudio[aidx]->nudge = AV_NOPTS_VALUE;
1779                 // set nudges for each program stream set
1780                 int npgrms = fmt_ctx->nb_programs;
1781                 for( int i=0; i<npgrms; ++i ) {
1782                         AVProgram *pgrm = fmt_ctx->programs[i];
1783                         // first start time video stream
1784                         int64_t vstart_time = -1, astart_time = -1;
1785                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1786                                 int fidx = pgrm->stream_index[j];
1787                                 AVStream *st = fmt_ctx->streams[fidx];
1788                                 AVCodecContext *avctx = st->codec;
1789                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1790                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1791                                         if( vstart_time > st->start_time ) continue;
1792                                         vstart_time = st->start_time;
1793                                         continue;
1794                                 }
1795                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1796                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1797                                         if( astart_time > st->start_time ) continue;
1798                                         astart_time = st->start_time;
1799                                         continue;
1800                                 }
1801                         }
1802                         // match program streams to max start_time
1803                         int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1804                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1805                                 int fidx = pgrm->stream_index[j];
1806                                 AVStream *st = fmt_ctx->streams[fidx];
1807                                 AVCodecContext *avctx = st->codec;
1808                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1809                                         for( int k=0; k<ffvideo.size(); ++k ) {
1810                                                 if( ffvideo[k]->fidx != fidx ) continue;
1811                                                 ffvideo[k]->nudge = nudge;
1812                                         }
1813                                         continue;
1814                                 }
1815                                 if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1816                                         for( int k=0; k<ffaudio.size(); ++k ) {
1817                                                 if( ffaudio[k]->fidx != fidx ) continue;
1818                                                 ffaudio[k]->nudge = nudge;
1819                                         }
1820                                         continue;
1821                                 }
1822                         }
1823                 }
1824                 // set nudges for any streams not yet set
1825                 int64_t vstart_time = 0, astart_time = 0;
1826                 int nstreams = fmt_ctx->nb_streams;
1827                 for( int i=0; i<nstreams; ++i ) {
1828                         AVStream *st = fmt_ctx->streams[i];
1829                         AVCodecContext *avctx = st->codec;
1830                         switch( avctx->codec_type ) {
1831                         case AVMEDIA_TYPE_VIDEO: {
1832                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1833                                 int vidx = ffvideo.size();
1834                                 while( --vidx >= 0 && ffvideo[vidx]->fidx != i );
1835                                 if( vidx >= 0 && ffvideo[vidx]->nudge != AV_NOPTS_VALUE ) continue;
1836                                 if( vstart_time >= st->start_time ) continue;
1837                                 vstart_time = st->start_time;
1838                                 break; }
1839                         case AVMEDIA_TYPE_AUDIO: {
1840                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1841                                 int aidx = ffaudio.size();
1842                                 while( --aidx >= 0 && ffaudio[aidx]->fidx != i );
1843                                 if( aidx >= 0 && ffaudio[aidx]->nudge != AV_NOPTS_VALUE ) continue;
1844                                 if( astart_time >= st->start_time ) continue;
1845                                 astart_time = st->start_time;
1846                                 break; }
1847                         default: break;
1848                         }
1849                 }
1850                 int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1851                 for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
1852                         if( ffvideo[vidx]->nudge != AV_NOPTS_VALUE ) continue;
1853                         ffvideo[vidx]->nudge = nudge;
1854                 }
1855                 for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
1856                         if( ffaudio[aidx]->nudge != AV_NOPTS_VALUE ) continue;
1857                         ffaudio[aidx]->nudge = nudge;
1858                 }
1859                 decoding = 1;
1860         }
1861         return decoding;
1862 }
1863
1864 int FFMPEG::encode_activate()
1865 {
1866         int ret = 0;
1867         if( encoding < 0 ) {
1868                 encoding = 0;
1869                 if( !(fmt_ctx->flags & AVFMT_NOFILE) &&
1870                     (ret=avio_open(&fmt_ctx->pb, fmt_ctx->filename, AVIO_FLAG_WRITE)) < 0 ) {
1871                         ff_err(ret, "FFMPEG::encode_activate: err opening : %s\n",
1872                                 fmt_ctx->filename);
1873                         return 1;
1874                 }
1875
1876                 AVDictionary *fopts = 0;
1877                 char option_path[BCTEXTLEN];
1878                 set_option_path(option_path, "format/%s", file_format);
1879                 read_options(option_path, fopts);
1880                 ret = avformat_write_header(fmt_ctx, &fopts);
1881                 av_dict_free(&fopts);
1882                 if( ret < 0 ) {
1883                         ff_err(ret, "FFMPEG::encode_activate: write header failed %s\n",
1884                                 fmt_ctx->filename);
1885                         return 1;
1886                 }
1887                 encoding = 1;
1888         }
1889         return encoding;
1890 }
1891
1892
1893 int FFMPEG::audio_seek(int stream, int64_t pos)
1894 {
1895         int aidx = astrm_index[stream].st_idx;
1896         FFAudioStream *aud = ffaudio[aidx];
1897         aud->audio_seek(pos);
1898         return 0;
1899 }
1900
1901 int FFMPEG::video_seek(int stream, int64_t pos)
1902 {
1903         int vidx = vstrm_index[stream].st_idx;
1904         FFVideoStream *vid = ffvideo[vidx];
1905         vid->video_seek(pos);
1906         return 0;
1907 }
1908
1909
1910 int FFMPEG::decode(int chn, int64_t pos, double *samples, int len)
1911 {
1912         if( !has_audio || chn >= astrm_index.size() ) return -1;
1913         int aidx = astrm_index[chn].st_idx;
1914         FFAudioStream *aud = ffaudio[aidx];
1915         if( aud->load(pos, len) < len ) return -1;
1916         int ch = astrm_index[chn].st_ch;
1917         int ret = aud->read(samples,len,ch);
1918         return ret;
1919 }
1920
1921 int FFMPEG::decode(int layer, int64_t pos, VFrame *vframe)
1922 {
1923         if( !has_video || layer >= vstrm_index.size() ) return -1;
1924         int vidx = vstrm_index[layer].st_idx;
1925         FFVideoStream *vid = ffvideo[vidx];
1926         return vid->load(vframe, pos);
1927 }
1928
1929
1930 int FFMPEG::encode(int stream, double **samples, int len)
1931 {
1932         FFAudioStream *aud = ffaudio[stream];
1933         return aud->encode(samples, len);
1934 }
1935
1936
1937 int FFMPEG::encode(int stream, VFrame *frame)
1938 {
1939         FFVideoStream *vid = ffvideo[stream];
1940         return vid->encode(frame);
1941 }
1942
1943 void FFMPEG::start_muxer()
1944 {
1945         if( !running() ) {
1946                 done = 0;
1947                 start();
1948         }
1949 }
1950
1951 void FFMPEG::stop_muxer()
1952 {
1953         if( running() ) {
1954                 done = 1;
1955                 mux_lock->unlock();
1956                 join();
1957         }
1958 }
1959
1960 void FFMPEG::flow_off()
1961 {
1962         if( !flow ) return;
1963         flow_lock->lock("FFMPEG::flow_off");
1964         flow = 0;
1965 }
1966
1967 void FFMPEG::flow_on()
1968 {
1969         if( flow ) return;
1970         flow = 1;
1971         flow_lock->unlock();
1972 }
1973
1974 void FFMPEG::flow_ctl()
1975 {
1976         while( !flow ) {
1977                 flow_lock->lock("FFMPEG::flow_ctl");
1978                 flow_lock->unlock();
1979         }
1980 }
1981
1982 int FFMPEG::mux_audio(FFrame *frm)
1983 {
1984         FFPacket pkt;
1985         FFStream *fst = frm->fst;
1986         AVCodecContext *ctx = fst->st->codec;
1987         AVFrame *frame = *frm;
1988         AVRational tick_rate = {1, ctx->sample_rate};
1989         frame->pts = av_rescale_q(frm->position, tick_rate, ctx->time_base);
1990         int got_packet = 0;
1991         int ret = fst->encode_frame(pkt, frame, got_packet);
1992         if( ret >= 0 && got_packet )
1993                 ret = fst->write_packet(pkt);
1994         if( ret < 0 )
1995                 ff_err(ret, "FFMPEG::mux_audio");
1996         return ret >= 0 ? 0 : 1;
1997 }
1998
1999 int FFMPEG::mux_video(FFrame *frm)
2000 {
2001         FFPacket pkt;
2002         FFStream *fst = frm->fst;
2003         AVFrame *frame = *frm;
2004         frame->pts = frm->position;
2005         int ret = 1, got_packet = 0;
2006         if( fmt_ctx->oformat->flags & AVFMT_RAWPICTURE ) {
2007                 /* a hack to avoid data copy with some raw video muxers */
2008                 pkt->flags |= AV_PKT_FLAG_KEY;
2009                 pkt->stream_index  = fst->st->index;
2010                 AVPicture *picture = (AVPicture *)frame;
2011                 pkt->data = (uint8_t *)picture;
2012                 pkt->size = sizeof(AVPicture);
2013                 pkt->pts = pkt->dts = frame->pts;
2014                 got_packet = 1;
2015         }
2016         else
2017                 ret = fst->encode_frame(pkt, frame, got_packet);
2018         if( ret >= 0 && got_packet )
2019                 ret = fst->write_packet(pkt);
2020         if( ret < 0 )
2021                 ff_err(ret, "FFMPEG::mux_video");
2022         return ret >= 0 ? 0 : 1;
2023 }
2024
2025 void FFMPEG::mux()
2026 {
2027         for(;;) {
2028                 double atm = -1, vtm = -1;
2029                 FFrame *afrm = 0, *vfrm = 0;
2030                 int demand = 0;
2031                 for( int i=0; i<ffaudio.size(); ++i ) {  // earliest audio
2032                         FFStream *fst = ffaudio[i];
2033                         if( fst->frm_count < 3 ) { demand = 1; flow_on(); }
2034                         FFrame *frm = fst->frms.first;
2035                         if( !frm ) { if( !done ) return; continue; }
2036                         double tm = to_secs(frm->position, fst->st->codec->time_base);
2037                         if( atm < 0 || tm < atm ) { atm = tm;  afrm = frm; }
2038                 }
2039                 for( int i=0; i<ffvideo.size(); ++i ) {  // earliest video
2040                         FFStream *fst = ffvideo[i];
2041                         if( fst->frm_count < 2 ) { demand = 1; flow_on(); }
2042                         FFrame *frm = fst->frms.first;
2043                         if( !frm ) { if( !done ) return; continue; }
2044                         double tm = to_secs(frm->position, fst->st->codec->time_base);
2045                         if( vtm < 0 || tm < vtm ) { vtm = tm;  vfrm = frm; }
2046                 }
2047                 if( !demand ) flow_off();
2048                 if( !afrm && !vfrm ) break;
2049                 int v = !afrm ? -1 : !vfrm ? 1 : av_compare_ts(
2050                         vfrm->position, vfrm->fst->st->codec->time_base,
2051                         afrm->position, afrm->fst->st->codec->time_base);
2052                 FFrame *frm = v <= 0 ? vfrm : afrm;
2053                 if( frm == afrm ) mux_audio(frm);
2054                 if( frm == vfrm ) mux_video(frm);
2055                 frm->dequeue();
2056                 delete frm;
2057         }
2058 }
2059
2060 void FFMPEG::run()
2061 {
2062         while( !done ) {
2063                 mux_lock->lock("FFMPEG::run");
2064                 if( !done ) mux();
2065         }
2066         mux();
2067         for( int i=0; i<ffaudio.size(); ++i )
2068                 ffaudio[i]->flush();
2069         for( int i=0; i<ffvideo.size(); ++i )
2070                 ffvideo[i]->flush();
2071 }
2072
2073
2074 int FFMPEG::ff_total_audio_channels()
2075 {
2076         return astrm_index.size();
2077 }
2078
2079 int FFMPEG::ff_total_astreams()
2080 {
2081         return ffaudio.size();
2082 }
2083
2084 int FFMPEG::ff_audio_channels(int stream)
2085 {
2086         return ffaudio[stream]->channels;
2087 }
2088
2089 int FFMPEG::ff_sample_rate(int stream)
2090 {
2091         return ffaudio[stream]->sample_rate;
2092 }
2093
2094 const char* FFMPEG::ff_audio_format(int stream)
2095 {
2096         AVStream *st = ffaudio[stream]->st;
2097         AVCodecID id = st->codec->codec_id;
2098         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
2099         return desc ? desc->name : "Unknown";
2100 }
2101
2102 int FFMPEG::ff_audio_pid(int stream)
2103 {
2104         return ffaudio[stream]->st->id;
2105 }
2106
2107 int64_t FFMPEG::ff_audio_samples(int stream)
2108 {
2109         return ffaudio[stream]->length;
2110 }
2111
2112 // find audio astream/channels with this program,
2113 //   or all program audio channels (astream=-1)
2114 int FFMPEG::ff_audio_for_video(int vstream, int astream, int64_t &channel_mask)
2115 {
2116         channel_mask = 0;
2117         int pidx = -1;
2118         int vidx = ffvideo[vstream]->fidx;
2119         // find first program with this video stream
2120         for( int i=0; pidx<0 && i<(int)fmt_ctx->nb_programs; ++i ) {
2121                 AVProgram *pgrm = fmt_ctx->programs[i];
2122                 for( int j=0;  pidx<0 && j<(int)pgrm->nb_stream_indexes; ++j ) {
2123                         int st_idx = pgrm->stream_index[j];
2124                         AVStream *st = fmt_ctx->streams[st_idx];
2125                         if( st->codec->codec_type != AVMEDIA_TYPE_VIDEO ) continue;
2126                         if( st_idx == vidx ) pidx = i;
2127                 }
2128         }
2129         if( pidx < 0 ) return -1;
2130         int ret = -1;
2131         int64_t channels = 0;
2132         AVProgram *pgrm = fmt_ctx->programs[pidx];
2133         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
2134                 int aidx = pgrm->stream_index[j];
2135                 AVStream *st = fmt_ctx->streams[aidx];
2136                 if( st->codec->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
2137                 if( astream > 0 ) { --astream;  continue; }
2138                 int astrm = -1;
2139                 for( int i=0; astrm<0 && i<ffaudio.size(); ++i )
2140                         if( ffaudio[i]->fidx == aidx ) astrm = i;
2141                 if( astrm >= 0 ) {
2142                         if( ret < 0 ) ret = astrm;
2143                         int64_t mask = (1 << ffaudio[astrm]->channels) - 1;
2144                         channels |= mask << ffaudio[astrm]->channel0;
2145                 }
2146                 if( !astream ) break;
2147         }
2148         channel_mask = channels;
2149         return ret;
2150 }
2151
2152
2153 int FFMPEG::ff_total_video_layers()
2154 {
2155         return vstrm_index.size();
2156 }
2157
2158 int FFMPEG::ff_total_vstreams()
2159 {
2160         return ffvideo.size();
2161 }
2162
2163 int FFMPEG::ff_video_width(int stream)
2164 {
2165         return ffvideo[stream]->width;
2166 }
2167
2168 int FFMPEG::ff_video_height(int stream)
2169 {
2170         return ffvideo[stream]->height;
2171 }
2172
2173 int FFMPEG::ff_set_video_width(int stream, int width)
2174 {
2175         int w = ffvideo[stream]->width;
2176         ffvideo[stream]->width = width;
2177         return w;
2178 }
2179
2180 int FFMPEG::ff_set_video_height(int stream, int height)
2181 {
2182         int h = ffvideo[stream]->height;
2183         ffvideo[stream]->height = height;
2184         return h;
2185 }
2186
2187 int FFMPEG::ff_coded_width(int stream)
2188 {
2189         AVStream *st = ffvideo[stream]->st;
2190         return st->codec->coded_width;
2191 }
2192
2193 int FFMPEG::ff_coded_height(int stream)
2194 {
2195         AVStream *st = ffvideo[stream]->st;
2196         return st->codec->coded_height;
2197 }
2198
2199 float FFMPEG::ff_aspect_ratio(int stream)
2200 {
2201         return ffvideo[stream]->aspect_ratio;
2202 }
2203
2204 const char* FFMPEG::ff_video_format(int stream)
2205 {
2206         AVStream *st = ffvideo[stream]->st;
2207         AVCodecID id = st->codec->codec_id;
2208         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
2209         return desc ? desc->name : "Unknown";
2210 }
2211
2212 double FFMPEG::ff_frame_rate(int stream)
2213 {
2214         return ffvideo[stream]->frame_rate;
2215 }
2216
2217 int64_t FFMPEG::ff_video_frames(int stream)
2218 {
2219         return ffvideo[stream]->length;
2220 }
2221
2222 int FFMPEG::ff_video_pid(int stream)
2223 {
2224         return ffvideo[stream]->st->id;
2225 }
2226
2227
2228 int FFMPEG::ff_cpus()
2229 {
2230         return file_base->file->cpus;
2231 }
2232
2233 int FFVideoStream::create_filter(const char *filter_spec,
2234                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
2235 {
2236         avfilter_register_all();
2237         AVFilter *filter = avfilter_get_by_name(filter_spec);
2238         if( !filter || filter->inputs->type != AVMEDIA_TYPE_VIDEO ) {
2239                 ff_err(AVERROR(EINVAL), "FFVideoStream::create_filter: %s\n", filter_spec);
2240                 return -1;
2241         }
2242         filter_graph = avfilter_graph_alloc();
2243         AVFilter *buffersrc = avfilter_get_by_name("buffer");
2244         AVFilter *buffersink = avfilter_get_by_name("buffersink");
2245
2246         int ret = 0;  char args[BCTEXTLEN];
2247         snprintf(args, sizeof(args),
2248                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
2249                 src_ctx->width, src_ctx->height, src_ctx->pix_fmt,
2250                 src_ctx->time_base.num, src_ctx->time_base.den,
2251                 src_ctx->sample_aspect_ratio.num, src_ctx->sample_aspect_ratio.den);
2252         if( ret >= 0 )
2253                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2254                         args, NULL, filter_graph);
2255         if( ret >= 0 )
2256                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2257                         NULL, NULL, filter_graph);
2258         if( ret >= 0 )
2259                 ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
2260                         (uint8_t*)&sink_ctx->pix_fmt, sizeof(sink_ctx->pix_fmt),
2261                         AV_OPT_SEARCH_CHILDREN);
2262         if( ret < 0 )
2263                 ff_err(ret, "FFVideoStream::create_filter");
2264         else
2265                 ret = FFStream::create_filter(filter_spec);
2266         return ret >= 0 ? 0 : 1;
2267 }
2268
2269 int FFAudioStream::create_filter(const char *filter_spec,
2270                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
2271 {
2272         avfilter_register_all();
2273         AVFilter *filter = avfilter_get_by_name(filter_spec);
2274         if( !filter || filter->inputs->type != AVMEDIA_TYPE_AUDIO ) {
2275                 ff_err(AVERROR(EINVAL), "FFAudioStream::create_filter: %s\n", filter_spec);
2276                 return -1;
2277         }
2278         filter_graph = avfilter_graph_alloc();
2279         AVFilter *buffersrc = avfilter_get_by_name("abuffer");
2280         AVFilter *buffersink = avfilter_get_by_name("abuffersink");
2281         int ret = 0;  char args[BCTEXTLEN];
2282         snprintf(args, sizeof(args),
2283                 "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%jx",
2284                 src_ctx->time_base.num, src_ctx->time_base.den, src_ctx->sample_rate,
2285                 av_get_sample_fmt_name(src_ctx->sample_fmt), src_ctx->channel_layout);
2286         if( ret >= 0 )
2287                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2288                         args, NULL, filter_graph);
2289         if( ret >= 0 )
2290                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2291                         NULL, NULL, filter_graph);
2292         if( ret >= 0 )
2293                 ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
2294                         (uint8_t*)&sink_ctx->sample_fmt, sizeof(sink_ctx->sample_fmt),
2295                         AV_OPT_SEARCH_CHILDREN);
2296         if( ret >= 0 )
2297                 ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
2298                         (uint8_t*)&sink_ctx->channel_layout,
2299                         sizeof(sink_ctx->channel_layout), AV_OPT_SEARCH_CHILDREN);
2300         if( ret >= 0 )
2301                 ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
2302                         (uint8_t*)&sink_ctx->sample_rate, sizeof(sink_ctx->sample_rate),
2303                         AV_OPT_SEARCH_CHILDREN);
2304         if( ret < 0 )
2305                 ff_err(ret, "FFAudioStream::create_filter");
2306         else
2307                 ret = FFStream::create_filter(filter_spec);
2308         return ret >= 0 ? 0 : 1;
2309 }
2310
2311 int FFStream::create_filter(const char *filter_spec)
2312 {
2313         /* Endpoints for the filter graph. */
2314         AVFilterInOut *outputs = avfilter_inout_alloc();
2315         outputs->name = av_strdup("in");
2316         outputs->filter_ctx = buffersrc_ctx;
2317         outputs->pad_idx = 0;
2318         outputs->next = 0;
2319
2320         AVFilterInOut *inputs  = avfilter_inout_alloc();
2321         inputs->name = av_strdup("out");
2322         inputs->filter_ctx = buffersink_ctx;
2323         inputs->pad_idx = 0;
2324         inputs->next = 0;
2325
2326         int ret = !outputs->name || !inputs->name ? -1 : 0;
2327         if( ret >= 0 )
2328                 ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
2329                         &inputs, &outputs, NULL);
2330         if( ret >= 0 )
2331                 ret = avfilter_graph_config(filter_graph, NULL);
2332
2333         if( ret < 0 )
2334                 ff_err(ret, "FFStream::create_filter");
2335         avfilter_inout_free(&inputs);
2336         avfilter_inout_free(&outputs);
2337         return ret;
2338 }
2339
2340 void FFStream::add_bsfilter(const char *bsf, const char *ap)
2341 {
2342         bsfilter.append(new BSFilter(bsf,ap));
2343 }
2344
2345 int FFStream::bs_filter(AVPacket *pkt)
2346 {
2347         if( !bsfilter.size() ) return 0;
2348         av_packet_split_side_data(pkt);
2349
2350         int ret = 0;
2351         for( int i=0; i<bsfilter.size(); ++i ) {
2352                 AVPacket bspkt = *pkt;
2353                 ret = av_bitstream_filter_filter(bsfilter[i]->bsfc,
2354                          st->codec, bsfilter[i]->args, &bspkt.data, &bspkt.size,
2355                          pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY);
2356                 if( ret < 0 ) break;
2357                 int size = bspkt.size;
2358                 uint8_t *data = bspkt.data;
2359                 if( !ret && bspkt.data != pkt->data ) {
2360                         size = bspkt.size;
2361                         data = (uint8_t *)av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2362                         if( !data ) { ret = AVERROR(ENOMEM);  break; }
2363                         memcpy(data, bspkt.data, size);
2364                         memset(data+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2365                         ret = 1;
2366                 }
2367                 if( ret > 0 ) {
2368                         pkt->side_data = 0;  pkt->side_data_elems = 0;
2369                         av_free_packet(pkt);
2370                         ret = av_packet_from_data(&bspkt, data, size);
2371                         if( ret < 0 ) break;
2372                 }
2373                 *pkt = bspkt;
2374         }
2375         if( ret < 0 )
2376                 ff_err(ret,"FFStream::bs_filter");
2377         return ret;
2378 }
2379
2380 int FFMPEG::scan(IndexState *index_state, int64_t *scan_position, int *canceled)
2381 {
2382         AVPacket pkt;
2383         av_init_packet(&pkt);
2384         AVFrame *frame = av_frame_alloc();
2385         if( !frame ) {
2386                 fprintf(stderr, "FFMPEG::scan: av_frame_alloc failed\n");
2387                 return -1;
2388         }
2389
2390         index_state->add_video_markers(ffvideo.size());
2391         index_state->add_audio_markers(ffaudio.size());
2392
2393         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
2394                 AVDictionary *copts = 0;
2395                 av_dict_copy(&copts, opts, 0);
2396                 AVStream *st = fmt_ctx->streams[i];
2397                 AVCodecID codec_id = st->codec->codec_id;
2398                 AVCodec *decoder = avcodec_find_decoder(codec_id);
2399                 if( avcodec_open2(st->codec, decoder, &copts) < 0 )
2400                         fprintf(stderr, "FFMPEG::scan: codec open failed\n");
2401                 av_dict_free(&copts);
2402         }
2403         int errs = 0;
2404         for( int64_t count=0; !*canceled; ++count ) {
2405                 av_packet_unref(&pkt);
2406                 pkt.data = 0; pkt.size = 0;
2407
2408                 int ret = av_read_frame(fmt_ctx, &pkt);
2409                 if( ret < 0 ) {
2410                         if( ret == AVERROR_EOF ) break;
2411                         if( ++errs > 100 ) {
2412                                 ff_err(ret, "over 100 read_frame errs\n");
2413                                 break;
2414                         }
2415                         continue;
2416                 }
2417                 if( !pkt.data ) continue;
2418                 int i = pkt.stream_index;
2419                 if( i < 0 || i >= (int)fmt_ctx->nb_streams ) continue;
2420                 AVStream *st = fmt_ctx->streams[i];
2421                 AVCodecContext *avctx = st->codec;
2422                 if( pkt.pos > *scan_position ) *scan_position = pkt.pos;
2423
2424                 switch( avctx->codec_type ) {
2425                 case AVMEDIA_TYPE_VIDEO: {
2426                         int vidx = ffvideo.size();
2427                         while( --vidx>=0 && ffvideo[vidx]->fidx != i );
2428                         if( vidx < 0 ) break;
2429                         FFVideoStream *vid = ffvideo[vidx];
2430                         int64_t tstmp = pkt.dts;
2431                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.pts;
2432                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
2433                                 if( vid->nudge != AV_NOPTS_VALUE ) tstmp -= vid->nudge;
2434                                 double secs = to_secs(tstmp, st->time_base);
2435                                 int64_t frm = secs * vid->frame_rate + 0.5;
2436                                 if( frm < 0 ) frm = 0;
2437                                 index_state->put_video_mark(vidx, frm, pkt.pos);
2438                         }
2439 #if 0
2440                         while( pkt.size > 0 ) {
2441                                 av_frame_unref(frame);
2442                                 int got_frame = 0;
2443                                 int ret = vid->decode_frame(&pkt, frame, got_frame);
2444                                 if( ret <= 0 ) break;
2445 //                              if( got_frame ) {}
2446                                 pkt.data += ret;
2447                                 pkt.size -= ret;
2448                         }
2449 #endif
2450                         break; }
2451                 case AVMEDIA_TYPE_AUDIO: {
2452                         int aidx = ffaudio.size();
2453                         while( --aidx>=0 && ffaudio[aidx]->fidx != i );
2454                         if( aidx < 0 ) break;
2455                         FFAudioStream *aud = ffaudio[aidx];
2456                         int64_t tstmp = pkt.pts;
2457                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.dts;
2458                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
2459                                 if( aud->nudge != AV_NOPTS_VALUE ) tstmp -= aud->nudge;
2460                                 double secs = to_secs(tstmp, st->time_base);
2461                                 int64_t sample = secs * aud->sample_rate + 0.5;
2462                                 if( sample < 0 ) sample = 0;
2463                                 index_state->put_audio_mark(aidx, sample, pkt.pos);
2464                         }
2465                         while( pkt.size > 0 ) {
2466                                 int ch = aud->channel0,  nch = aud->channels;
2467                                 int64_t pos = index_state->pos(ch);
2468                                 if( pos != aud->curr_pos ) {
2469 if( abs(pos-aud->curr_pos) > 1 )
2470 printf("audio%d pad %ld %ld (%ld)\n", aud->idx, pos, aud->curr_pos, pos-aud->curr_pos);
2471                                         index_state->pad_data(ch, nch, aud->curr_pos);
2472                                 }
2473                                 av_frame_unref(frame);
2474                                 int got_frame = 0;
2475                                 int ret = aud->decode_frame(&pkt, frame, got_frame);
2476                                 if( ret <= 0 ) break;
2477                                 if( got_frame ) {
2478                                         float *samples;
2479                                         int len = aud->get_samples(samples,
2480                                                  &frame->extended_data[0], frame->nb_samples);
2481                                         for( int i=0; i<nch; ++i )
2482                                                 index_state->put_data(ch+i,nch,samples+i,len);
2483                                         aud->curr_pos += len;
2484                                 }
2485                                 pkt.data += ret;
2486                                 pkt.size -= ret;
2487                         }
2488                         break; }
2489                 default: break;
2490                 }
2491         }
2492         av_frame_free(&frame);
2493         return 0;
2494 }
2495
2496 void FFStream::load_markers(IndexMarks &marks, double rate)
2497 {
2498         index_markers = &marks;
2499         int in = 0;
2500         int64_t sz = marks.size();
2501         int max_entries = fmt_ctx->max_index_size / sizeof(AVIndexEntry) - 1;
2502         int nb_ent = st->nb_index_entries;
2503 // some formats already have an index
2504         if( nb_ent > 0 ) {
2505                 AVIndexEntry *ep = &st->index_entries[nb_ent-1];
2506                 int64_t tstmp = ep->timestamp;
2507                 if( nudge != AV_NOPTS_VALUE ) tstmp -= nudge;
2508                 double secs = ffmpeg->to_secs(tstmp, st->time_base);
2509                 int64_t no = secs * rate;
2510                 while( in < sz && marks[in].no <= no ) ++in;
2511         }
2512         int64_t len = sz - in;
2513         int64_t count = max_entries - nb_ent;
2514         if( count > len ) count = len;
2515         for( int i=0; i<count; ++i ) {
2516                 int k = in + i * len / count;
2517                 int64_t no = marks[k].no, pos = marks[k].pos;
2518                 double secs = (double)no / rate;
2519                 int64_t tstmp = secs * st->time_base.den / st->time_base.num;
2520                 if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
2521                 av_add_index_entry(st, pos, tstmp, 0, 0, AVINDEX_KEYFRAME);
2522         }
2523 }
2524