cinelerra-5.1/cinelerra/ffmpeg.C

   1
   2 #include <stdio.h>
   3 #include <stdint.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6 #include <string.h>
   7 #include <stdarg.h>
   8 #include <fcntl.h>
   9 #include <limits.h>
  10 // 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 void FFPacket::init()
  51 {
  52         av_init_packet(&pkt);
  53         pkt.data = 0; pkt.size = 0;
  54 }
  55 void FFPacket::finit()
  56 {
  57         av_packet_unref(&pkt);
  58 }
  59
  60 FFrame::FFrame(FFStream *fst)
  61 {
  62         this->fst = fst;
  63         frm = av_frame_alloc();
  64         init = fst->init_frame(frm);
  65 }
  66
  67 FFrame::~FFrame()
  68 {
  69         av_frame_free(&frm);
  70 }
  71
  72 void FFrame::queue(int64_t pos)
  73 {
  74         position = pos;
  75         fst->queue(this);
  76 }
  77
  78 void FFrame::dequeue()
  79 {
  80         fst->dequeue(this);
  81 }
  82
  83 int FFAudioStream::read(float *fp, long len)
  84 {
  85         long n = len * nch;
  86         float *op = outp;
  87         while( n > 0 ) {
  88                 int k = lmt - op;
  89                 if( k > n ) k = n;
  90                 n -= k;
  91                 while( --k >= 0 ) *fp++ = *op++;
  92                 if( op >= lmt ) op = bfr;
  93         }
  94         return len;
  95 }
  96
  97 void FFAudioStream::realloc(long nsz, int nch, long len)
  98 {
  99         long bsz = nsz * nch;
 100         float *np = new float[bsz];
 101         inp = np + read(np, len) * nch;
 102         outp = np;
 103         lmt = np + bsz;
 104         this->nch = nch;
 105         sz = nsz;
 106         delete [] bfr;  bfr = np;
 107 }
 108
 109 void FFAudioStream::realloc(long nsz, int nch)
 110 {
 111         if( nsz > sz || this->nch != nch ) {
 112                 long len = this->nch != nch ? 0 : hpos;
 113                 if( len > sz ) len = sz;
 114                 iseek(len);
 115                 realloc(nsz, nch, len);
 116         }
 117 }
 118
 119 void FFAudioStream::reserve(long nsz, int nch)
 120 {
 121         long len = (inp - outp) / nch;
 122         nsz += len;
 123         if( nsz > sz || this->nch != nch ) {
 124                 if( this->nch != nch ) len = 0;
 125                 realloc(nsz, nch, len);
 126                 return;
 127         }
 128         if( (len*=nch) > 0 && bfr != outp )
 129                 memmove(bfr, outp, len*sizeof(*bfr));
 130         outp = bfr;
 131         inp = bfr + len;
 132 }
 133
 134 long FFAudioStream::used()
 135 {
 136         long len = inp>=outp ? inp-outp : inp-bfr + lmt-outp;
 137         return len / nch;
 138 }
 139 long FFAudioStream::avail()
 140 {
 141         float *in1 = inp+1;
 142         if( in1 >= lmt ) in1 = bfr;
 143         long len = outp >= in1 ? outp-in1 : outp-bfr + lmt-in1;
 144         return len / nch;
 145 }
 146 void FFAudioStream::reset_history()
 147 {
 148         inp = outp = bfr;
 149         hpos = 0;
 150 }
 151
 152 void FFAudioStream::iseek(int64_t ofs)
 153 {
 154         outp = inp - ofs*nch;
 155         if( outp < bfr ) outp += sz*nch;
 156 }
 157
 158 float *FFAudioStream::get_outp(int ofs)
 159 {
 160         float *ret = outp;
 161         outp += ofs*nch;
 162         return ret;
 163 }
 164
 165 int64_t FFAudioStream::put_inp(int ofs)
 166 {
 167         inp += ofs*nch;
 168         return (inp-outp) / nch;
 169 }
 170
 171 int FFAudioStream::write(const float *fp, long len)
 172 {
 173         long n = len * nch;
 174         float *ip = inp;
 175         while( n > 0 ) {
 176                 int k = lmt - ip;
 177                 if( k > n ) k = n;
 178                 n -= k;
 179                 while( --k >= 0 ) *ip++ = *fp++;
 180                 if( ip >= lmt ) ip = bfr;
 181         }
 182         inp = ip;
 183         hpos += len;
 184         return len;
 185 }
 186
 187 int FFAudioStream::zero(long len)
 188 {
 189         long n = len * nch;
 190         float *ip = inp;
 191         while( n > 0 ) {
 192                 int k = lmt - ip;
 193                 if( k > n ) k = n;
 194                 n -= k;
 195                 while( --k >= 0 ) *ip++ = 0;
 196                 if( ip >= lmt ) ip = bfr;
 197         }
 198         inp = ip;
 199         hpos += len;
 200         return len;
 201 }
 202
 203 // does not advance outp
 204 int FFAudioStream::read(double *dp, long len, int ch)
 205 {
 206         long n = len;
 207         float *op = outp + ch;
 208         float *lmt1 = lmt + nch-1;
 209         while( n > 0 ) {
 210                 int k = (lmt1 - op) / nch;
 211                 if( k > n ) k = n;
 212                 n -= k;
 213                 while( --k >= 0 ) { *dp++ = *op;  op += nch; }
 214                 if( op >= lmt ) op -= sz*nch;
 215         }
 216         return len;
 217 }
 218
 219 // load linear buffer, no wrapping allowed, does not advance inp
 220 int FFAudioStream::write(const double *dp, long len, int ch)
 221 {
 222         long n = len;
 223         float *ip = inp + ch;
 224         while( --n >= 0 ) { *ip = *dp++;  ip += nch; }
 225         return len;
 226 }
 227
 228
 229 FFStream::FFStream(FFMPEG *ffmpeg, AVStream *st, int fidx)
 230 {
 231         this->ffmpeg = ffmpeg;
 232         this->st = st;
 233         this->fidx = fidx;
 234         frm_lock = new Mutex("FFStream::frm_lock");
 235         fmt_ctx = 0;
 236         filter_graph = 0;
 237         buffersrc_ctx = 0;
 238         buffersink_ctx = 0;
 239         frm_count = 0;
 240         nudge = AV_NOPTS_VALUE;
 241         seek_pos = curr_pos = 0;
 242         seeked = 1;  eof = 0;
 243         reading = writing = 0;
 244         flushed = 0;
 245         need_packet = 1;
 246         frame = fframe = 0;
 247 }
 248
 249 FFStream::~FFStream()
 250 {
 251         if( reading > 0 || writing > 0 ) avcodec_close(st->codec);
 252         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
 253         while( frms.first ) frms.remove(frms.first);
 254         if( filter_graph ) avfilter_graph_free(&filter_graph);
 255         if( frame ) av_frame_free(&frame);
 256         if( fframe ) av_frame_free(&fframe);
 257         bsfilter.remove_all_objects();
 258         delete frm_lock;
 259 }
 260
 261 void FFStream::ff_lock(const char *cp)
 262 {
 263         FFMPEG::fflock.lock(cp);
 264 }
 265
 266 void FFStream::ff_unlock()
 267 {
 268         FFMPEG::fflock.unlock();
 269 }
 270
 271 void FFStream::queue(FFrame *frm)
 272 {
 273         frm_lock->lock("FFStream::queue");
 274         frms.append(frm);
 275         ++frm_count;
 276         frm_lock->unlock();
 277         ffmpeg->mux_lock->unlock();
 278 }
 279
 280 void FFStream::dequeue(FFrame *frm)
 281 {
 282         frm_lock->lock("FFStream::dequeue");
 283         --frm_count;
 284         frms.remove_pointer(frm);
 285         frm_lock->unlock();
 286 }
 287
 288 int FFStream::encode_activate()
 289 {
 290         if( writing < 0 )
 291                 writing = ffmpeg->encode_activate();
 292         return writing;
 293 }
 294
 295 int FFStream::decode_activate()
 296 {
 297         if( reading < 0 && (reading=ffmpeg->decode_activate()) > 0 ) {
 298                 ff_lock("FFStream::decode_activate");
 299                 reading = 0;
 300                 AVDictionary *copts = 0;
 301                 av_dict_copy(&copts, ffmpeg->opts, 0);
 302                 int ret = 0;
 303                 // this should be avformat_copy_context(), but no copy avail
 304                 ret = avformat_open_input(&fmt_ctx, ffmpeg->fmt_ctx->filename, NULL, &copts);
 305                 if( ret >= 0 ) {
 306                         ret = avformat_find_stream_info(fmt_ctx, 0);
 307                         st = fmt_ctx->streams[fidx];
 308                         load_markers();
 309                 }
 310                 if( ret >= 0 ) {
 311                         AVCodecID codec_id = st->codec->codec_id;
 312                         AVCodec *decoder = avcodec_find_decoder(codec_id);
 313                         ret = avcodec_open2(st->codec, decoder, &copts);
 314                         if( ret >= 0 )
 315                                 reading = 1;
 316                         else
 317                                 eprintf(_("open decoder failed\n"));
 318                 }
 319                 else
 320                         eprintf(_("can't clone input file\n"));
 321                 av_dict_free(&copts);
 322                 ff_unlock();
 323         }
 324         return reading;
 325 }
 326
 327 int FFStream::read_packet()
 328 {
 329         av_packet_unref(ipkt);
 330         int ret = av_read_frame(fmt_ctx, ipkt);
 331         if( ret < 0 ) {
 332                 st_eof(1);
 333                 if( ret == AVERROR_EOF ) {
 334                         ipkt->stream_index = st->index;
 335                         return 0;
 336                 }
 337                 ff_err(ret, "FFStream::read_packet: av_read_frame failed\n");
 338                 flushed = 1;
 339                 return -1;
 340         }
 341         return 1;
 342 }
 343
 344 int FFStream::decode(AVFrame *frame)
 345 {
 346         int ret = 0;
 347         int retries = MAX_RETRY;
 348         int got_frame = 0;
 349
 350         while( ret >= 0 && !flushed && --retries >= 0 && !got_frame ) {
 351                 if( need_packet ) {
 352                         need_packet = 0;
 353                         if( (ret=read_packet()) < 0 ) break;
 354                 }
 355                 if( ipkt->stream_index == st->index ) {
 356                         while( (ipkt->size > 0 || !ipkt->data) && !got_frame ) {
 357                                 ret = decode_frame(ipkt, frame, got_frame);
 358                                 if( ret < 0 ) need_packet = 1;
 359                                 if( ret <= 0 || !ipkt->data ) break;
 360                                 ipkt->data += ret;
 361                                 ipkt->size -= ret;
 362                         }
 363                         retries = MAX_RETRY;
 364                 }
 365                 if( !got_frame ) {
 366                         need_packet = 1;
 367                         flushed = st_eof();
 368                 }
 369         }
 370
 371         if( retries < 0 )
 372                 fprintf(stderr, "FFStream::decode: Retry limit\n");
 373         if( ret >= 0 )
 374                 ret = got_frame;
 375         else
 376                 fprintf(stderr, "FFStream::decode: failed\n");
 377
 378         return ret;
 379 }
 380
 381 int FFStream::load_filter(AVFrame *frame)
 382 {
 383         int ret = av_buffersrc_add_frame_flags(buffersrc_ctx,
 384                         frame, AV_BUFFERSRC_FLAG_KEEP_REF);
 385         if( ret < 0 ) {
 386                 av_frame_unref(frame);
 387                 eprintf(_("av_buffersrc_add_frame_flags failed\n"));
 388         }
 389         return ret;
 390 }
 391
 392 int FFStream::read_filter(AVFrame *frame)
 393 {
 394         int ret = av_buffersink_get_frame(buffersink_ctx, frame);
 395         if( ret < 0 ) {
 396                 if( ret == AVERROR(EAGAIN) ) return 0;
 397                 if( ret == AVERROR_EOF ) { st_eof(1); return -1; }
 398                 ff_err(ret, "FFStream::read_filter: av_buffersink_get_frame failed\n");
 399                 return ret;
 400         }
 401         return 1;
 402 }
 403
 404 int FFStream::read_frame(AVFrame *frame)
 405 {
 406         if( !filter_graph || !buffersrc_ctx || !buffersink_ctx )
 407                 return decode(frame);
 408         if( !fframe && !(fframe=av_frame_alloc()) ) {
 409                 fprintf(stderr, "FFStream::read_frame: av_frame_alloc failed\n");
 410                 return -1;
 411         }
 412         int ret = -1;
 413         while( !flushed && !(ret=read_filter(frame)) ) {
 414                 if( (ret=decode(fframe)) < 0 ) break;
 415                 if( ret > 0 && (ret=load_filter(fframe)) < 0 ) break;
 416         }
 417         return ret;
 418 }
 419
 420 int FFStream::write_packet(FFPacket &pkt)
 421 {
 422         bs_filter(pkt);
 423         av_packet_rescale_ts(pkt, st->codec->time_base, st->time_base);
 424         pkt->stream_index = st->index;
 425         return av_interleaved_write_frame(ffmpeg->fmt_ctx, pkt);
 426 }
 427
 428 int FFStream::flush()
 429 {
 430         if( writing < 0 )
 431                 return -1;
 432         int ret = 0;
 433         while( ret >= 0 ) {
 434                 FFPacket pkt;
 435                 int got_packet = 0;
 436                 ret = encode_frame(pkt, 0, got_packet);
 437                 if( ret < 0 || !got_packet ) break;
 438                 ret = write_packet(pkt);
 439         }
 440         if( ret < 0 )
 441                 ff_err(ret, "FFStream::flush");
 442         return ret >= 0 ? 0 : 1;
 443 }
 444
 445 int FFStream::seek(int64_t no, double rate)
 446 {
 447         int64_t tstmp = -INT64_MAX+1;
 448 // default ffmpeg native seek
 449         int npkts = 1;
 450         int64_t pos = no, plmt = -1;
 451         IndexMarks *index_markers = get_markers();
 452         if( index_markers && index_markers->size() > 1 ) {
 453                 IndexMarks &marks = *index_markers;
 454                 int i = marks.find(pos);
 455                 int64_t n = i < 0 ? (i=0) : marks[i].no;
 456 // if indexed seek point not too far away (<30 secs), use index
 457                 if( no-n < 30*rate ) {
 458                         if( n < 0 ) n = 0;
 459                         pos = n;
 460                         if( i < marks.size() ) plmt = marks[i].pos;
 461                         npkts = MAX_RETRY;
 462                 }
 463         }
 464         if( pos > 0 ) {
 465                 double secs = pos / rate;
 466                 tstmp = secs * st->time_base.den / st->time_base.num;
 467                 if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
 468         }
 469         int ret = avformat_seek_file(fmt_ctx, st->index,
 470                 -INT64_MAX, tstmp, INT64_MAX, AVSEEK_FLAG_ANY);
 471         if( ret >= 0 ) {
 472                 avcodec_flush_buffers(st->codec);
 473                 ipkt.finit();  ipkt.init();
 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(;;) {
 478                         if( read_packet() <= 0 ) { ret = -1;  break; }
 479                         if( plmt >= 0 && ipkt->pos >= plmt ) break;
 480                         if( ipkt->stream_index != st->index ) continue;
 481                         if( --npkts <= 0 ) break;
 482                         int64_t pkt_ts = ipkt->dts != AV_NOPTS_VALUE ? ipkt->dts : ipkt->pts;
 483                         if( pkt_ts == AV_NOPTS_VALUE ) continue;
 484                         if( pkt_ts >= tstmp ) break;
 485                 }
 486         }
 487         if( ret < 0 ) {
 488 //printf("** seek fail %ld, %ld\n", pos, tstmp);
 489                 seeked = need_packet = 0;
 490                 st_eof(flushed=1);
 491                 return -1;
 492         }
 493 //printf("seeked pos = %ld, %ld\n", pos, tstmp);
 494         seek_pos = curr_pos = pos;
 495         return 0;
 496 }
 497
 498 FFAudioStream::FFAudioStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 499  : FFStream(ffmpeg, strm, fidx)
 500 {
 501         this->idx = idx;
 502         channel0 = channels = 0;
 503         sample_rate = 0;
 504         mbsz = 0;
 505         length = 0;
 506         resample_context = 0;
 507
 508         aud_bfr_sz = 0;
 509         aud_bfr = 0;
 510
 511 // history buffer
 512         nch = 2;
 513         sz = 0x10000;
 514         long bsz = sz * nch;
 515         bfr = new float[bsz];
 516         lmt = bfr + bsz;
 517         reset_history();
 518 }
 519
 520 FFAudioStream::~FFAudioStream()
 521 {
 522         if( resample_context ) swr_free(&resample_context);
 523         delete [] aud_bfr;
 524         delete [] bfr;
 525 }
 526
 527 int FFAudioStream::get_samples(float *&samples, uint8_t **data, int len)
 528 {
 529         samples = *(float **)data;
 530         if( resample_context ) {
 531                 if( len > aud_bfr_sz ) {
 532                         delete [] aud_bfr;
 533                         aud_bfr = 0;
 534                 }
 535                 if( !aud_bfr ) {
 536                         aud_bfr_sz = len;
 537                         aud_bfr = new float[aud_bfr_sz*channels];
 538                 }
 539                 int ret = swr_convert(resample_context,
 540                         (uint8_t**)&aud_bfr, aud_bfr_sz, (const uint8_t**)data, len);
 541                 if( ret < 0 ) {
 542                         ff_err(ret, "FFAudioStream::get_samples: swr_convert failed\n");
 543                         return -1;
 544                 }
 545                 samples = aud_bfr;
 546                 len = ret;
 547         }
 548         return len;
 549 }
 550
 551 int FFAudioStream::load_history(uint8_t **data, int len)
 552 {
 553         float *samples;
 554         len = get_samples(samples, data, len);
 555         if( len > 0 ) {
 556                 // biggest user bfr since seek + frame
 557                 realloc(mbsz + len + 1, channels);
 558                 write(samples, len);
 559         }
 560         return len;
 561 }
 562
 563 int FFAudioStream::decode_frame(AVPacket *pkt, AVFrame *frame, int &got_frame)
 564 {
 565         int first_frame = seeked;  seeked = 0;
 566         int ret = avcodec_decode_audio4(st->codec, frame, &got_frame, pkt);
 567         if( ret < 0 ) {
 568                 if( first_frame ) return 0;
 569                 ff_err(ret, "FFAudioStream::decode_frame: Could not read audio frame\n");
 570                 return -1;
 571         }
 572         if( got_frame ) {
 573                 int64_t pkt_ts = av_frame_get_best_effort_timestamp(frame);
 574                 if( pkt_ts != AV_NOPTS_VALUE )
 575                         curr_pos = ffmpeg->to_secs(pkt_ts - nudge, st->time_base) * sample_rate + 0.5;
 576         }
 577         return ret;
 578 }
 579
 580 int FFAudioStream::encode_activate()
 581 {
 582         if( writing >= 0 ) return writing;
 583         AVCodecContext *ctx = st->codec;
 584         frame_sz = ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 585                 10000 : ctx->frame_size;
 586         return FFStream::encode_activate();
 587 }
 588
 589 int FFAudioStream::nb_samples()
 590 {
 591         AVCodecContext *ctx = st->codec;
 592         return ctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
 593                 10000 : ctx->frame_size;
 594 }
 595
 596 int64_t FFAudioStream::load_buffer(double ** const sp, int len)
 597 {
 598         reserve(len+1, st->codec->channels);
 599         for( int ch=0; ch<nch; ++ch )
 600                 write(sp[ch], len, ch);
 601         return put_inp(len);
 602 }
 603
 604 int FFAudioStream::in_history(int64_t pos)
 605 {
 606         if( pos > curr_pos ) return 0;
 607         int64_t len = hpos;
 608         if( len > sz ) len = sz;
 609         if( pos < curr_pos - len ) return 0;
 610         return 1;
 611 }
 612
 613
 614 int FFAudioStream::init_frame(AVFrame *frame)
 615 {
 616         AVCodecContext *ctx = st->codec;
 617         frame->nb_samples = frame_sz;
 618         frame->format = ctx->sample_fmt;
 619         frame->channel_layout = ctx->channel_layout;
 620         frame->sample_rate = ctx->sample_rate;
 621         int ret = av_frame_get_buffer(frame, 0);
 622         if (ret < 0)
 623                 ff_err(ret, "FFAudioStream::init_frame: av_frame_get_buffer failed\n");
 624         return ret;
 625 }
 626
 627 int FFAudioStream::load(int64_t pos, int len)
 628 {
 629         if( audio_seek(pos) < 0 ) return -1;
 630         if( !frame && !(frame=av_frame_alloc()) ) {
 631                 fprintf(stderr, "FFAudioStream::load: av_frame_alloc failed\n");
 632                 return -1;
 633         }
 634         if( mbsz < len ) mbsz = len;
 635         int64_t end_pos = pos + len;
 636         int ret = 0;
 637         for( int i=0; ret>=0 && !flushed && curr_pos<end_pos && i<MAX_RETRY; ++i ) {
 638                 ret = read_frame(frame);
 639                 if( ret > 0 ) {
 640                         load_history(&frame->extended_data[0], frame->nb_samples);
 641                         curr_pos += frame->nb_samples;
 642                 }
 643         }
 644         if( end_pos > curr_pos ) {
 645                 zero(end_pos - curr_pos);
 646                 curr_pos = end_pos;
 647         }
 648         len = curr_pos - pos;
 649         iseek(len);
 650         return len;
 651 }
 652
 653 int FFAudioStream::audio_seek(int64_t pos)
 654 {
 655         if( decode_activate() < 0 ) return -1;
 656         if( !st->codec || !st->codec->codec ) return -1;
 657         if( in_history(pos) ) return 0;
 658         if( pos == curr_pos ) return 0;
 659         reset_history();  mbsz = 0;
 660 // guarentee preload > 1sec samples
 661         if( seek(pos-sample_rate, sample_rate) < 0 ) return -1;
 662         return 1;
 663 }
 664
 665 int FFAudioStream::encode(double **samples, int len)
 666 {
 667         if( encode_activate() <= 0 ) return -1;
 668         ffmpeg->flow_ctl();
 669         int ret = 0;
 670         int64_t count = load_buffer(samples, len);
 671         FFrame *frm = 0;
 672
 673         while( ret >= 0 && count >= frame_sz ) {
 674                 frm = new FFrame(this);
 675                 if( (ret=frm->initted()) < 0 ) break;
 676                 AVFrame *frame = *frm;
 677                 float *bfrp = get_outp(frame_sz);
 678                 ret =  swr_convert(resample_context,
 679                         (uint8_t **)frame->extended_data, frame_sz,
 680                         (const uint8_t **)&bfrp, frame_sz);
 681                 if( ret < 0 ) {
 682                         ff_err(ret, "FFAudioStream::encode: swr_convert failed\n");
 683                         break;
 684                 }
 685                 frm->queue(curr_pos);
 686                 frm = 0;
 687                 curr_pos += frame_sz;
 688                 count -= frame_sz;
 689         }
 690
 691         delete frm;
 692         return ret >= 0 ? 0 : 1;
 693 }
 694
 695 int FFAudioStream::encode_frame(AVPacket *pkt, AVFrame *frame, int &got_packet)
 696 {
 697         int ret = avcodec_encode_audio2(st->codec, pkt, frame, &got_packet);
 698         if( ret < 0 ) {
 699                 ff_err(ret, "FFAudioStream::encode_frame: encode audio failed\n");
 700                 return -1;
 701         }
 702         return ret;
 703 }
 704
 705 void FFAudioStream::load_markers()
 706 {
 707         IndexState *index_state = ffmpeg->file_base->asset->index_state;
 708         if( !index_state || idx >= index_state->audio_markers.size() ) return;
 709         if( index_state->marker_status == MARKERS_NOTTESTED ) return;
 710         FFStream::load_markers(*index_state->audio_markers[idx], sample_rate);
 711 }
 712
 713 IndexMarks *FFAudioStream::get_markers()
 714 {
 715         IndexState *index_state = ffmpeg->file_base->asset->index_state;
 716         if( !index_state || idx >= index_state->audio_markers.size() ) return 0;
 717         return index_state->audio_markers[idx];
 718 }
 719
 720 FFVideoStream::FFVideoStream(FFMPEG *ffmpeg, AVStream *strm, int idx, int fidx)
 721  : FFStream(ffmpeg, strm, fidx)
 722 {
 723         this->idx = idx;
 724         width = height = 0;
 725         frame_rate = 0;
 726         aspect_ratio = 0;
 727         length = 0;
 728 }
 729
 730 FFVideoStream::~FFVideoStream()
 731 {
 732 }
 733
 734 int FFVideoStream::decode_frame(AVPacket *pkt, AVFrame *frame, int &got_frame)
 735 {
 736         int first_frame = seeked;  seeked = 0;
 737         int ret = avcodec_decode_video2(st->codec, frame, &got_frame, pkt);
 738         if( ret < 0 ) {
 739                 if( first_frame ) return 0;
 740                 ff_err(ret, "FFVideoStream::decode_frame: Could not read video frame\n");
 741                 return -1;
 742         }
 743         else // this is right out of ffplay, looks questionable ???
 744                 ret = pkt->size;
 745
 746         if( got_frame ) {
 747                 int64_t pkt_ts = av_frame_get_best_effort_timestamp(frame);
 748                 if( pkt_ts != AV_NOPTS_VALUE )
 749                         curr_pos = ffmpeg->to_secs(pkt_ts - nudge, st->time_base) * frame_rate + 0.5;
 750         }
 751         return ret;
 752 }
 753
 754 int FFVideoStream::load(VFrame *vframe, int64_t pos)
 755 {
 756         int ret = video_seek(pos);
 757         if( ret < 0 ) return -1;
 758         if( !frame && !(frame=av_frame_alloc()) ) {
 759                 fprintf(stderr, "FFVideoStream::load: av_frame_alloc failed\n");
 760                 return -1;
 761         }
 762         for( int i=0; ret>=0 && !flushed && curr_pos<=pos && i<MAX_RETRY; ++i ) {
 763                 ret = read_frame(frame);
 764                 if( ret > 0 ) ++curr_pos;
 765         }
 766         if( frame->format == AV_PIX_FMT_NONE || frame->width <= 0 || frame->height <= 0 )
 767                 ret = -1;
 768         if( ret >= 0 ) {
 769                 ret = convert_cmodel(vframe, frame);
 770         }
 771         ret = ret > 0 ? 1 : ret < 0 ? -1 : 0;
 772         return ret;
 773 }
 774
 775 int FFVideoStream::video_seek(int64_t pos)
 776 {
 777         if( decode_activate() < 0 ) return -1;
 778         if( !st->codec || !st->codec->codec ) return -1;
 779         if( pos == curr_pos-1 && !seeked ) return 0;
 780 // if close enough, just read up to current
 781         int gop = st->codec->gop_size;
 782         if( gop < 4 ) gop = 4;
 783         if( gop > 64 ) gop = 64;
 784         int read_limit = curr_pos + 3*gop;
 785         if( pos >= curr_pos && pos <= read_limit ) return 0;
 786 // guarentee preload more than 2*gop frames
 787         if( seek(pos - 3*gop, frame_rate) < 0 ) return -1;
 788         return 1;
 789 }
 790
 791 int FFVideoStream::init_frame(AVFrame *picture)
 792 {
 793         AVCodecContext *ctx = st->codec;
 794         picture->format = ctx->pix_fmt;
 795         picture->width  = ctx->width;
 796         picture->height = ctx->height;
 797         int ret = av_frame_get_buffer(picture, 32);
 798         return ret;
 799 }
 800
 801 int FFVideoStream::encode(VFrame *vframe)
 802 {
 803         if( encode_activate() <= 0 ) return -1;
 804         ffmpeg->flow_ctl();
 805         FFrame *picture = new FFrame(this);
 806         int ret = picture->initted();
 807         if( ret >= 0 ) {
 808                 AVFrame *frame = *picture;
 809                 frame->pts = curr_pos;
 810                 ret = convert_pixfmt(vframe, frame);
 811         }
 812         if( ret >= 0 ) {
 813                 picture->queue(curr_pos);
 814                 ++curr_pos;
 815         }
 816         else {
 817                 fprintf(stderr, "FFVideoStream::encode: encode failed\n");
 818                 delete picture;
 819         }
 820         return ret >= 0 ? 0 : 1;
 821 }
 822
 823 int FFVideoStream::encode_frame(AVPacket *pkt, AVFrame *frame, int &got_packet)
 824 {
 825         int ret = avcodec_encode_video2(st->codec, pkt, frame, &got_packet);
 826         if( ret < 0 ) {
 827                 ff_err(ret, "FFVideoStream::encode_frame: encode video failed\n");
 828                 return -1;
 829         }
 830         return ret;
 831 }
 832
 833 AVPixelFormat FFVideoConvert::color_model_to_pix_fmt(int color_model)
 834 {
 835         switch( color_model ) {
 836         case BC_YUV422:         return AV_PIX_FMT_YUYV422;
 837         case BC_RGB888:         return AV_PIX_FMT_RGB24;
 838         case BC_RGBA8888:       return AV_PIX_FMT_RGBA;
 839         case BC_BGR8888:        return AV_PIX_FMT_BGR0;
 840         case BC_BGR888:         return AV_PIX_FMT_BGR24;
 841         case BC_ARGB8888:       return AV_PIX_FMT_ARGB;
 842         case BC_ABGR8888:       return AV_PIX_FMT_ABGR;
 843         case BC_RGB8:           return AV_PIX_FMT_RGB8;
 844         case BC_YUV420P:        return AV_PIX_FMT_YUV420P;
 845         case BC_YUV422P:        return AV_PIX_FMT_YUV422P;
 846         case BC_YUV444P:        return AV_PIX_FMT_YUV444P;
 847         case BC_YUV411P:        return AV_PIX_FMT_YUV411P;
 848         case BC_RGB565:         return AV_PIX_FMT_RGB565;
 849         case BC_RGB161616:      return AV_PIX_FMT_RGB48LE;
 850         case BC_RGBA16161616:   return AV_PIX_FMT_RGBA64LE;
 851         case BC_AYUV16161616:   return AV_PIX_FMT_AYUV64LE;
 852         default: break;
 853         }
 854
 855         return AV_PIX_FMT_NB;
 856 }
 857
 858 int FFVideoConvert::pix_fmt_to_color_model(AVPixelFormat pix_fmt)
 859 {
 860         switch (pix_fmt) {
 861         case AV_PIX_FMT_YUYV422:        return BC_YUV422;
 862         case AV_PIX_FMT_RGB24:          return BC_RGB888;
 863         case AV_PIX_FMT_RGBA:           return BC_RGBA8888;
 864         case AV_PIX_FMT_BGR0:           return BC_BGR8888;
 865         case AV_PIX_FMT_BGR24:          return BC_BGR888;
 866         case AV_PIX_FMT_ARGB:           return BC_ARGB8888;
 867         case AV_PIX_FMT_ABGR:           return BC_ABGR8888;
 868         case AV_PIX_FMT_RGB8:           return BC_RGB8;
 869         case AV_PIX_FMT_YUV420P:        return BC_YUV420P;
 870         case AV_PIX_FMT_YUV422P:        return BC_YUV422P;
 871         case AV_PIX_FMT_YUV444P:        return BC_YUV444P;
 872         case AV_PIX_FMT_YUV411P:        return BC_YUV411P;
 873         case AV_PIX_FMT_RGB565:         return BC_RGB565;
 874         case AV_PIX_FMT_RGB48LE:        return BC_RGB161616;
 875         case AV_PIX_FMT_RGBA64LE:       return BC_RGBA16161616;
 876         case AV_PIX_FMT_AYUV64LE:       return BC_AYUV16161616;
 877         default: break;
 878         }
 879
 880         return -1;
 881 }
 882
 883 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip)
 884 {
 885         AVFrame *ipic = av_frame_alloc();
 886         int ret = convert_picture_vframe(frame, ip, ipic);
 887         av_frame_free(&ipic);
 888         return ret;
 889 }
 890
 891 int FFVideoConvert::convert_picture_vframe(VFrame *frame, AVFrame *ip, AVFrame *ipic)
 892 {
 893         int cmodel = frame->get_color_model();
 894         AVPixelFormat ofmt = color_model_to_pix_fmt(cmodel);
 895         if( ofmt == AV_PIX_FMT_NB ) return -1;
 896         int size = av_image_fill_arrays(ipic->data, ipic->linesize,
 897                 frame->get_data(), ofmt, frame->get_w(), frame->get_h(), 1);
 898         if( size < 0 ) return -1;
 899
 900         int bpp = BC_CModels::calculate_pixelsize(cmodel);
 901         int ysz = bpp * frame->get_w(), usz = ysz;
 902         switch( cmodel ) {
 903         case BC_YUV410P:
 904         case BC_YUV411P:
 905                 usz /= 2;
 906         case BC_YUV420P:
 907         case BC_YUV422P:
 908                 usz /= 2;
 909         case BC_YUV444P:
 910                 // override av_image_fill_arrays() for planar types
 911                 ipic->data[0] = frame->get_y();  ipic->linesize[0] = ysz;
 912                 ipic->data[1] = frame->get_u();  ipic->linesize[1] = usz;
 913                 ipic->data[2] = frame->get_v();  ipic->linesize[2] = usz;
 914                 break;
 915         default:
 916                 ipic->data[0] = frame->get_data();
 917                 ipic->linesize[0] = frame->get_bytes_per_line();
 918                 break;
 919         }
 920
 921         AVPixelFormat pix_fmt = (AVPixelFormat)ip->format;
 922         convert_ctx = sws_getCachedContext(convert_ctx, ip->width, ip->height, pix_fmt,
 923                 frame->get_w(), frame->get_h(), ofmt, SWS_POINT, NULL, NULL, NULL);
 924         if( !convert_ctx ) {
 925                 fprintf(stderr, "FFVideoConvert::convert_picture_frame:"
 926                                 " sws_getCachedContext() failed\n");
 927                 return -1;
 928         }
 929         int ret = sws_scale(convert_ctx, ip->data, ip->linesize, 0, ip->height,
 930             ipic->data, ipic->linesize);
 931         if( ret < 0 ) {
 932                 ff_err(ret, "FFVideoConvert::convert_picture_frame: sws_scale() failed\n");
 933                 return -1;
 934         }
 935         return 0;
 936 }
 937
 938 int FFVideoConvert::convert_cmodel(VFrame *frame, AVFrame *ip)
 939 {
 940         // try direct transfer
 941         if( !convert_picture_vframe(frame, ip) ) return 1;
 942         // use indirect transfer
 943         AVPixelFormat ifmt = (AVPixelFormat)ip->format;
 944         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ifmt);
 945         int max_bits = 0;
 946         for( int i = 0; i <desc->nb_components; ++i ) {
 947                 int bits = desc->comp[i].depth;
 948                 if( bits > max_bits ) max_bits = bits;
 949         }
 950         int imodel = pix_fmt_to_color_model(ifmt);
 951         if( imodel < 0 )  {
 952                 int cmodel = frame->get_color_model();
 953                 BC_CModels::is_yuv(cmodel) ?
 954                     (BC_CModels::has_alpha(cmodel) ?
 955                         BC_AYUV16161616 :
 956                         (max_bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
 957                     (BC_CModels::has_alpha(cmodel) ?
 958                         (max_bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
 959                         (max_bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
 960         }
 961         VFrame vframe(ip->width, ip->height, imodel);
 962         if( convert_picture_vframe(&vframe, ip) ) return -1;
 963         frame->transfer_from(&vframe);
 964         return 1;
 965 }
 966
 967 int FFVideoConvert::transfer_cmodel(VFrame *frame, AVFrame *ifp)
 968 {
 969         int ret = convert_cmodel(frame, ifp);
 970         if( ret > 0 ) {
 971                 const AVDictionary *src = av_frame_get_metadata(ifp);
 972                 AVDictionaryEntry *t = NULL;
 973                 BC_Hash *hp = frame->get_params();
 974                 //hp->clear();
 975                 while( (t=av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)) )
 976                         hp->update(t->key, t->value);
 977         }
 978         return ret;
 979 }
 980
 981 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op)
 982 {
 983         AVFrame *opic = av_frame_alloc();
 984         int ret = convert_vframe_picture(frame, op, opic);
 985         av_frame_free(&opic);
 986         return ret;
 987 }
 988
 989 int FFVideoConvert::convert_vframe_picture(VFrame *frame, AVFrame *op, AVFrame *opic)
 990 {
 991         int cmodel = frame->get_color_model();
 992         AVPixelFormat ifmt = color_model_to_pix_fmt(cmodel);
 993         if( ifmt == AV_PIX_FMT_NB ) return -1;
 994         int size = av_image_fill_arrays(opic->data, opic->linesize,
 995                  frame->get_data(), ifmt, frame->get_w(), frame->get_h(), 1);
 996         if( size < 0 ) return -1;
 997
 998         int bpp = BC_CModels::calculate_pixelsize(cmodel);
 999         int ysz = bpp * frame->get_w(), usz = ysz;
1000         switch( cmodel ) {
1001         case BC_YUV410P:
1002         case BC_YUV411P:
1003                 usz /= 2;
1004         case BC_YUV420P:
1005         case BC_YUV422P:
1006                 usz /= 2;
1007         case BC_YUV444P:
1008                 // override av_image_fill_arrays() for planar types
1009                 opic->data[0] = frame->get_y();  opic->linesize[0] = ysz;
1010                 opic->data[1] = frame->get_u();  opic->linesize[1] = usz;
1011                 opic->data[2] = frame->get_v();  opic->linesize[2] = usz;
1012                 break;
1013         default:
1014                 opic->data[0] = frame->get_data();
1015                 opic->linesize[0] = frame->get_bytes_per_line();
1016                 break;
1017         }
1018
1019         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1020         convert_ctx = sws_getCachedContext(convert_ctx, frame->get_w(), frame->get_h(),
1021                 ifmt, op->width, op->height, ofmt, SWS_POINT, NULL, NULL, NULL);
1022         if( !convert_ctx ) {
1023                 fprintf(stderr, "FFVideoConvert::convert_frame_picture:"
1024                                 " sws_getCachedContext() failed\n");
1025                 return -1;
1026         }
1027         int ret = sws_scale(convert_ctx, opic->data, opic->linesize, 0, frame->get_h(),
1028                         op->data, op->linesize);
1029         if( ret < 0 ) {
1030                 ff_err(ret, "FFVideoConvert::convert_frame_picture: sws_scale() failed\n");
1031                 return -1;
1032         }
1033         return 0;
1034 }
1035
1036 int FFVideoConvert::convert_pixfmt(VFrame *frame, AVFrame *op)
1037 {
1038         // try direct transfer
1039         if( !convert_vframe_picture(frame, op) ) return 1;
1040         // use indirect transfer
1041         int cmodel = frame->get_color_model();
1042         int bits = BC_CModels::calculate_pixelsize(cmodel) * 8;
1043         bits /= BC_CModels::components(cmodel);
1044         AVPixelFormat ofmt = (AVPixelFormat)op->format;
1045         int imodel = pix_fmt_to_color_model(ofmt);
1046         if( imodel < 0 ) {
1047                 imodel =
1048                     BC_CModels::is_yuv(cmodel) ?
1049                         (BC_CModels::has_alpha(cmodel) ?
1050                         BC_AYUV16161616 :
1051                         (bits > 8 ? BC_AYUV16161616 : BC_YUV444P)) :
1052                     (BC_CModels::has_alpha(cmodel) ?
1053                         (bits > 8 ? BC_RGBA16161616 : BC_RGBA8888) :
1054                         (bits > 8 ? BC_RGB161616 : BC_RGB888)) ;
1055         }
1056         VFrame vframe(frame->get_w(), frame->get_h(), imodel);
1057         vframe.transfer_from(frame);
1058         if( !convert_vframe_picture(&vframe, op) ) return 1;
1059         return -1;
1060 }
1061
1062 int FFVideoConvert::transfer_pixfmt(VFrame *frame, AVFrame *ofp)
1063 {
1064         int ret = convert_pixfmt(frame, ofp);
1065         if( ret > 0 ) {
1066                 BC_Hash *hp = frame->get_params();
1067                 AVDictionary **dict = avpriv_frame_get_metadatap(ofp);
1068                 //av_dict_free(dict);
1069                 for( int i=0; i<hp->size(); ++i ) {
1070                         char *key = hp->get_key(i), *val = hp->get_value(i);
1071                         av_dict_set(dict, key, val, 0);
1072                 }
1073         }
1074         return ret;
1075 }
1076
1077 void FFVideoStream::load_markers()
1078 {
1079         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1080         if( !index_state || idx >= index_state->video_markers.size() ) return;
1081         FFStream::load_markers(*index_state->video_markers[idx], frame_rate);
1082 }
1083
1084 IndexMarks *FFVideoStream::get_markers()
1085 {
1086         IndexState *index_state = ffmpeg->file_base->asset->index_state;
1087         if( !index_state || idx >= index_state->video_markers.size() ) return 0;
1088         return !index_state ? 0 : index_state->video_markers[idx];
1089 }
1090
1091
1092 FFMPEG::FFMPEG(FileBase *file_base)
1093 {
1094         fmt_ctx = 0;
1095         this->file_base = file_base;
1096         memset(file_format,0,sizeof(file_format));
1097         mux_lock = new Condition(0,"FFMPEG::mux_lock",0);
1098         flow_lock = new Condition(1,"FFStream::flow_lock",0);
1099         done = -1;
1100         flow = 1;
1101         decoding = encoding = 0;
1102         has_audio = has_video = 0;
1103         opts = 0;
1104         opt_duration = -1;
1105         opt_video_filter = 0;
1106         opt_audio_filter = 0;
1107         char option_path[BCTEXTLEN];
1108         set_option_path(option_path, "%s", "ffmpeg.opts");
1109         read_options(option_path, opts);
1110 }
1111
1112 FFMPEG::~FFMPEG()
1113 {
1114         ff_lock("FFMPEG::~FFMPEG()");
1115         close_encoder();
1116         ffaudio.remove_all_objects();
1117         ffvideo.remove_all_objects();
1118         if( fmt_ctx ) avformat_close_input(&fmt_ctx);
1119         ff_unlock();
1120         delete flow_lock;
1121         delete mux_lock;
1122         av_dict_free(&opts);
1123         delete [] opt_video_filter;
1124         delete [] opt_audio_filter;
1125 }
1126
1127 int FFMPEG::check_sample_rate(AVCodec *codec, int sample_rate)
1128 {
1129         const int *p = codec->supported_samplerates;
1130         if( !p ) return sample_rate;
1131         while( *p != 0 ) {
1132                 if( *p == sample_rate ) return *p;
1133                 ++p;
1134         }
1135         return 0;
1136 }
1137
1138 static inline AVRational std_frame_rate(int i)
1139 {
1140         static const int m1 = 1001*12, m2 = 1000*12;
1141         static const int freqs[] = {
1142                 40*m1, 48*m1, 50*m1, 60*m1, 80*m1,120*m1, 240*m1,
1143                 24*m2, 30*m2, 60*m2, 12*m2, 15*m2, 48*m2, 0,
1144         };
1145         int freq = i<30*12 ? (i+1)*1001 : freqs[i-30*12];
1146         return (AVRational) { freq, 1001*12 };
1147 }
1148
1149 AVRational FFMPEG::check_frame_rate(AVCodec *codec, double frame_rate)
1150 {
1151         const AVRational *p = codec->supported_framerates;
1152         AVRational rate, best_rate = (AVRational) { 0, 0 };
1153         double max_err = 1.;  int i = 0;
1154         while( ((p ? (rate=*p++) : (rate=std_frame_rate(i++))), rate.num) != 0 ) {
1155                 double framerate = (double) rate.num / rate.den;
1156                 double err = fabs(frame_rate/framerate - 1.);
1157                 if( err >= max_err ) continue;
1158                 max_err = err;
1159                 best_rate = rate;
1160         }
1161         return max_err < 0.0001 ? best_rate : (AVRational) { 0, 0 };
1162 }
1163
1164 AVRational FFMPEG::to_sample_aspect_ratio(Asset *asset)
1165 {
1166 #if 1
1167         double display_aspect = asset->width / (double)asset->height;
1168         double sample_aspect = asset->aspect_ratio / display_aspect;
1169         int width = 1000000, height = width * sample_aspect + 0.5;
1170         float w, h;
1171         MWindow::create_aspect_ratio(w, h, width, height);
1172         return (AVRational){(int)h, (int)w};
1173 #else
1174 // square pixels
1175         return (AVRational){1, 1};
1176 #endif
1177 }
1178
1179 AVRational FFMPEG::to_time_base(int sample_rate)
1180 {
1181         return (AVRational){1, sample_rate};
1182 }
1183
1184 void FFMPEG::set_option_path(char *path, const char *fmt, ...)
1185 {
1186         char *ep = path + BCTEXTLEN-1;
1187         strncpy(path, File::get_cindat_path(), ep-path);
1188         strncat(path, "/ffmpeg/", ep-path);
1189         path += strlen(path);
1190         va_list ap;
1191         va_start(ap, fmt);
1192         path += vsnprintf(path, ep-path, fmt, ap);
1193         va_end(ap);
1194         *path = 0;
1195 }
1196
1197 void FFMPEG::get_option_path(char *path, const char *type, const char *spec)
1198 {
1199         if( *spec == '/' )
1200                 strcpy(path, spec);
1201         else
1202                 set_option_path(path, "%s/%s", type, spec);
1203 }
1204
1205 int FFMPEG::get_format(char *format, const char *path, const char *spec)
1206 {
1207         char option_path[BCTEXTLEN], line[BCTEXTLEN], codec[BCTEXTLEN];
1208         get_option_path(option_path, path, spec);
1209         FILE *fp = fopen(option_path,"r");
1210         if( !fp ) return 1;
1211         int ret = 0;
1212         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1213         if( !ret ) {
1214                 line[sizeof(line)-1] = 0;
1215                 ret = scan_option_line(line, format, codec);
1216         }
1217         fclose(fp);
1218         return ret;
1219 }
1220
1221 int FFMPEG::get_codec(char *codec, const char *path, const char *spec)
1222 {
1223         char option_path[BCTEXTLEN], line[BCTEXTLEN], format[BCTEXTLEN];
1224         get_option_path(option_path, path, spec);
1225         FILE *fp = fopen(option_path,"r");
1226         if( !fp ) return 1;
1227         int ret = 0;
1228         if( !fgets(line, sizeof(line), fp) ) ret = 1;
1229         fclose(fp);
1230         if( !ret ) {
1231                 line[sizeof(line)-1] = 0;
1232                 ret = scan_option_line(line, format, codec);
1233         }
1234         if( !ret ) {
1235                 char *vp = codec, *ep = vp+BCTEXTLEN-1;
1236                 while( vp < ep && *vp && *vp != '|' ) ++vp;
1237                 if( *vp == '|' ) --vp;
1238                 while( vp > codec && (*vp==' ' || *vp=='\t') ) *vp-- = 0;
1239         }
1240         return ret;
1241 }
1242
1243 int FFMPEG::get_file_format()
1244 {
1245         int ret = 0;
1246         char audio_format[BCSTRLEN], video_format[BCSTRLEN];
1247         file_format[0] = audio_format[0] = video_format[0] = 0;
1248         Asset *asset = file_base->asset;
1249         if( !ret && asset->audio_data )
1250                 ret = get_format(audio_format, "audio", asset->acodec);
1251         if( !ret && asset->video_data )
1252                 ret = get_format(video_format, "video", asset->vcodec);
1253         if( !ret && !audio_format[0] && !video_format[0] )
1254                 ret = 1;
1255         if( !ret && audio_format[0] && video_format[0] &&
1256             strcmp(audio_format, video_format) ) ret = -1;
1257         if( !ret )
1258                 strcpy(file_format, audio_format[0] ? audio_format : video_format);
1259         return ret;
1260 }
1261
1262 int FFMPEG::scan_option_line(char *cp, char *tag, char *val)
1263 {
1264         while( *cp == ' ' || *cp == '\t' ) ++cp;
1265         char *bp = cp;
1266         while( *cp && *cp != ' ' && *cp != '\t' && *cp != '=' ) ++cp;
1267         int len = cp - bp;
1268         if( !len || len > BCSTRLEN-1 ) return 1;
1269         while( bp < cp ) *tag++ = *bp++;
1270         *tag = 0;
1271         while( *cp == ' ' || *cp == '\t' ) ++cp;
1272         if( *cp == '=' ) ++cp;
1273         while( *cp == ' ' || *cp == '\t' ) ++cp;
1274         bp = cp;
1275         while( *cp && *cp != '\n' ) ++cp;
1276         len = cp - bp;
1277         if( len > BCTEXTLEN-1 ) return 1;
1278         while( bp < cp ) *val++ = *bp++;
1279         *val = 0;
1280         return 0;
1281 }
1282
1283 int FFMPEG::load_defaults(const char *path, const char *type,
1284                  char *codec, char *codec_options, int len)
1285 {
1286         char default_file[BCTEXTLEN];
1287         FFMPEG::set_option_path(default_file, "%s/%s.dfl", path, type);
1288         FILE *fp = fopen(default_file,"r");
1289         if( !fp ) return 1;
1290         fgets(codec, BCSTRLEN, fp);
1291         char *cp = codec;
1292         while( *cp && *cp!='\n' ) ++cp;
1293         *cp = 0;
1294         while( len > 0 && fgets(codec_options, len, fp) ) {
1295                 int n = strlen(codec_options);
1296                 codec_options += n;  len -= n;
1297         }
1298         fclose(fp);
1299         FFMPEG::set_option_path(default_file, "%s/%s", path, codec);
1300         return FFMPEG::load_options(default_file, codec_options, len);
1301 }
1302
1303 void FFMPEG::set_asset_format(Asset *asset, const char *text)
1304 {
1305         if( asset->format != FILE_FFMPEG ) return;
1306         strcpy(asset->fformat, text);
1307         if( !asset->ff_audio_options[0] ) {
1308                 asset->audio_data = !load_defaults("audio", text, asset->acodec,
1309                         asset->ff_audio_options, sizeof(asset->ff_audio_options));
1310         }
1311         if( !asset->ff_video_options[0] ) {
1312                 asset->video_data = !load_defaults("video", text, asset->vcodec,
1313                         asset->ff_video_options, sizeof(asset->ff_video_options));
1314         }
1315 }
1316
1317 int FFMPEG::get_encoder(const char *options,
1318                 char *format, char *codec, char *bsfilter, char *bsargs)
1319 {
1320         FILE *fp = fopen(options,"r");
1321         if( !fp ) {
1322                 eprintf(_("options open failed %s\n"),options);
1323                 return 1;
1324         }
1325         if( get_encoder(fp, format, codec, bsfilter, bsargs) )
1326                 eprintf(_("format/codec not found %s\n"), options);
1327         fclose(fp);
1328         return 0;
1329 }
1330
1331 int FFMPEG::get_encoder(FILE *fp,
1332                 char *format, char *codec, char *bsfilter, char *bsargs)
1333 {
1334         format[0] = codec[0] = bsfilter[0] = bsargs[0] = 0;
1335         char line[BCTEXTLEN];
1336         if( !fgets(line, sizeof(line), fp) ) return 1;
1337         line[sizeof(line)-1] = 0;
1338         if( scan_option_line(line, format, codec) ) return 1;
1339         char *cp = codec;
1340         while( *cp && *cp != '|' ) ++cp;
1341         if( !*cp ) return 0;
1342         if( scan_option_line(cp+1, bsfilter, bsargs) ) return 1;
1343         do { *cp-- = 0; } while( cp>=codec && (*cp==' ' || *cp == '\t' ) );
1344         return 0;
1345 }
1346
1347 int FFMPEG::read_options(const char *options, AVDictionary *&opts)
1348 {
1349         FILE *fp = fopen(options,"r");
1350         if( !fp ) return 1;
1351         int ret = read_options(fp, options, opts);
1352         fclose(fp);
1353         return ret;
1354 }
1355
1356 int FFMPEG::scan_options(const char *options, AVDictionary *&opts, AVStream *st)
1357 {
1358         FILE *fp = fmemopen((void *)options,strlen(options),"r");
1359         if( !fp ) return 0;
1360         int ret = read_options(fp, options, opts);
1361         fclose(fp);
1362         AVDictionaryEntry *tag = av_dict_get(opts, "id", NULL, 0);
1363         if( tag ) st->id = strtol(tag->value,0,0);
1364         return ret;
1365 }
1366
1367 int FFMPEG::read_options(FILE *fp, const char *options, AVDictionary *&opts)
1368 {
1369         int ret = 0, no = 0;
1370         char line[BCTEXTLEN];
1371         while( !ret && fgets(line, sizeof(line), fp) ) {
1372                 line[sizeof(line)-1] = 0;
1373                 ++no;
1374                 if( line[0] == '#' ) continue;
1375                 if( line[0] == '\n' ) continue;
1376                 char key[BCSTRLEN], val[BCTEXTLEN];
1377                 if( scan_option_line(line, key, val) ) {
1378                         eprintf(_("err reading %s: line %d\n"), options, no);
1379                         ret = 1;
1380                 }
1381                 if( !ret ) {
1382                         if( !strcmp(key, "duration") )
1383                                 opt_duration = strtod(val, 0);
1384                         else if( !strcmp(key, "video_filter") )
1385                                 opt_video_filter = cstrdup(val);
1386                         else if( !strcmp(key, "audio_filter") )
1387                                 opt_audio_filter = cstrdup(val);
1388                         else if( !strcmp(key, "loglevel") )
1389                                 set_loglevel(val);
1390                         else
1391                                 av_dict_set(&opts, key, val, 0);
1392                 }
1393         }
1394         return ret;
1395 }
1396
1397 int FFMPEG::load_options(const char *options, AVDictionary *&opts)
1398 {
1399         char option_path[BCTEXTLEN];
1400         set_option_path(option_path, "%s", options);
1401         return read_options(option_path, opts);
1402 }
1403
1404 int FFMPEG::load_options(const char *path, char *bfr, int len)
1405 {
1406         *bfr = 0;
1407         FILE *fp = fopen(path, "r");
1408         if( !fp ) return 1;
1409         fgets(bfr, len, fp); // skip hdr
1410         len = fread(bfr, 1, len-1, fp);
1411         if( len < 0 ) len = 0;
1412         bfr[len] = 0;
1413         fclose(fp);
1414         return 0;
1415 }
1416
1417 void FFMPEG::set_loglevel(const char *ap)
1418 {
1419         if( !ap || !*ap ) return;
1420         const struct {
1421                 const char *name;
1422                 int level;
1423         } log_levels[] = {
1424                 { "quiet"  , AV_LOG_QUIET   },
1425                 { "panic"  , AV_LOG_PANIC   },
1426                 { "fatal"  , AV_LOG_FATAL   },
1427                 { "error"  , AV_LOG_ERROR   },
1428                 { "warning", AV_LOG_WARNING },
1429                 { "info"   , AV_LOG_INFO    },
1430                 { "verbose", AV_LOG_VERBOSE },
1431                 { "debug"  , AV_LOG_DEBUG   },
1432         };
1433         for( int i=0; i<(int)(sizeof(log_levels)/sizeof(log_levels[0])); ++i ) {
1434                 if( !strcmp(log_levels[i].name, ap) ) {
1435                         av_log_set_level(log_levels[i].level);
1436                         return;
1437                 }
1438         }
1439         av_log_set_level(atoi(ap));
1440 }
1441
1442 double FFMPEG::to_secs(int64_t time, AVRational time_base)
1443 {
1444         double base_time = time == AV_NOPTS_VALUE ? 0 :
1445                 av_rescale_q(time, time_base, AV_TIME_BASE_Q);
1446         return base_time / AV_TIME_BASE;
1447 }
1448
1449 int FFMPEG::info(char *text, int len)
1450 {
1451         if( len <= 0 ) return 0;
1452         decode_activate();
1453 #define report(s...) do { int n = snprintf(cp,len,s); cp += n;  len -= n; } while(0)
1454         char *cp = text;
1455         if( ffvideo.size() > 0 )
1456                 report("\n%d video stream%s\n",ffvideo.size(), ffvideo.size()!=1 ? "s" : "");
1457         for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
1458                 FFVideoStream *vid = ffvideo[vidx];
1459                 AVStream *st = vid->st;
1460                 AVCodecContext *avctx = st->codec;
1461                 report(_("vid%d (%d),  id 0x%06x:\n"), vid->idx, vid->fidx, avctx->codec_id);
1462                 const AVCodecDescriptor *desc = avcodec_descriptor_get(avctx->codec_id);
1463                 report("  video%d %s", vidx+1, desc ? desc->name : " (unkn)");
1464                 report(" %dx%d %5.2f", vid->width, vid->height, vid->frame_rate);
1465                 const char *pfn = av_get_pix_fmt_name(avctx->pix_fmt);
1466                 report(" pix %s\n", pfn ? pfn : "(unkn)");
1467                 double secs = to_secs(st->duration, st->time_base);
1468                 int64_t length = secs * vid->frame_rate + 0.5;
1469                 double ofs = to_secs((vid->nudge - st->start_time), st->time_base);
1470                 int64_t nudge = ofs * vid->frame_rate;
1471                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
1472                 report("    %jd%c%jd frms %0.2f secs", length,ch,nudge, secs);
1473                 int hrs = secs/3600;  secs -= hrs*3600;
1474                 int mins = secs/60;  secs -= mins*60;
1475                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1476         }
1477         if( ffaudio.size() > 0 )
1478                 report("\n%d audio stream%s\n",ffaudio.size(), ffaudio.size()!=1 ? "s" : "");
1479         for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
1480                 FFAudioStream *aud = ffaudio[aidx];
1481                 AVStream *st = aud->st;
1482                 AVCodecContext *avctx = st->codec;
1483                 report(_("aud%d (%d),  id 0x%06x:\n"), aud->idx, aud->fidx, avctx->codec_id);
1484                 const AVCodecDescriptor *desc = avcodec_descriptor_get(avctx->codec_id);
1485                 int nch = aud->channels, ch0 = aud->channel0+1;
1486                 report("  audio%d-%d %s", ch0, ch0+nch-1, desc ? desc->name : " (unkn)");
1487                 const char *fmt = av_get_sample_fmt_name(avctx->sample_fmt);
1488                 report(" %s %d", fmt, aud->sample_rate);
1489                 int sample_bits = av_get_bits_per_sample(avctx->codec_id);
1490                 report(" %dbits\n", sample_bits);
1491                 double secs = to_secs(st->duration, st->time_base);
1492                 int64_t length = secs * aud->sample_rate + 0.5;
1493                 double ofs = to_secs((aud->nudge - st->start_time), st->time_base);
1494                 int64_t nudge = ofs * aud->sample_rate;
1495                 int ch = nudge >= 0 ? '+' : (nudge=-nudge, '-');
1496                 report("    %jd%c%jd smpl %0.2f secs", length,ch,nudge, secs);
1497                 int hrs = secs/3600;  secs -= hrs*3600;
1498                 int mins = secs/60;  secs -= mins*60;
1499                 report("  %d:%02d:%05.2f\n", hrs, mins, secs);
1500         }
1501         if( fmt_ctx->nb_programs > 0 )
1502                 report("\n%d program%s\n",fmt_ctx->nb_programs, fmt_ctx->nb_programs!=1 ? "s" : "");
1503         for( int i=0; i<(int)fmt_ctx->nb_programs; ++i ) {
1504                 report("program %d", i+1);
1505                 AVProgram *pgrm = fmt_ctx->programs[i];
1506                 for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1507                         int idx = pgrm->stream_index[j];
1508                         int vidx = ffvideo.size();
1509                         while( --vidx>=0 && ffvideo[vidx]->fidx != idx );
1510                         if( vidx >= 0 ) {
1511                                 report(", vid%d", vidx);
1512                                 continue;
1513                         }
1514                         int aidx = ffaudio.size();
1515                         while( --aidx>=0 && ffaudio[aidx]->fidx != idx );
1516                         if( aidx >= 0 ) {
1517                                 report(", aud%d", aidx);
1518                                 continue;
1519                         }
1520                         report(", (%d)", pgrm->stream_index[j]);
1521                 }
1522                 report("\n");
1523         }
1524         report("\n");
1525         AVDictionaryEntry *tag = 0;
1526         while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
1527                 report("%s=%s\n", tag->key, tag->value);
1528
1529         if( !len ) --cp;
1530         *cp = 0;
1531         return cp - text;
1532 #undef report
1533 }
1534
1535
1536 int FFMPEG::init_decoder(const char *filename)
1537 {
1538         ff_lock("FFMPEG::init_decoder");
1539         av_register_all();
1540         char file_opts[BCTEXTLEN];
1541         char *bp = strrchr(strcpy(file_opts, filename), '/');
1542         char *sp = strrchr(!bp ? file_opts : bp, '.');
1543         FILE *fp = 0;
1544         if( sp ) {
1545                 strcpy(sp, ".opts");
1546                 fp = fopen(file_opts, "r");
1547         }
1548         if( fp ) {
1549                 read_options(fp, file_opts, opts);
1550                 fclose(fp);
1551         }
1552         else
1553                 load_options("decode.opts", opts);
1554         AVDictionary *fopts = 0;
1555         av_dict_copy(&fopts, opts, 0);
1556         int ret = avformat_open_input(&fmt_ctx, filename, NULL, &fopts);
1557         av_dict_free(&fopts);
1558         if( ret >= 0 )
1559                 ret = avformat_find_stream_info(fmt_ctx, NULL);
1560         if( !ret ) {
1561                 decoding = -1;
1562         }
1563         ff_unlock();
1564         return !ret ? 0 : 1;
1565 }
1566
1567 int FFMPEG::open_decoder()
1568 {
1569         struct stat st;
1570         if( stat(fmt_ctx->filename, &st) < 0 ) {
1571                 eprintf(_("can't stat file: %s\n"), fmt_ctx->filename);
1572                 return 1;
1573         }
1574
1575         int64_t file_bits = 8 * st.st_size;
1576         if( !fmt_ctx->bit_rate && opt_duration > 0 )
1577                 fmt_ctx->bit_rate = file_bits / opt_duration;
1578
1579         int estimated = 0;
1580         if( fmt_ctx->bit_rate > 0 ) {
1581                 for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
1582                         AVStream *st = fmt_ctx->streams[i];
1583                         if( st->duration != AV_NOPTS_VALUE ) continue;
1584                         if( st->time_base.num > INT64_MAX / fmt_ctx->bit_rate ) continue;
1585                         st->duration = av_rescale(file_bits, st->time_base.den,
1586                                 fmt_ctx->bit_rate * (int64_t) st->time_base.num);
1587                         estimated = 1;
1588                 }
1589         }
1590         if( estimated )
1591                 printf("FFMPEG::open_decoder: some stream times estimated\n");
1592
1593         ff_lock("FFMPEG::open_decoder");
1594         int ret = 0, bad_time = 0;
1595         for( int i=0; !ret && i<(int)fmt_ctx->nb_streams; ++i ) {
1596                 AVStream *st = fmt_ctx->streams[i];
1597                 if( st->duration == AV_NOPTS_VALUE ) bad_time = 1;
1598                 AVCodecContext *avctx = st->codec;
1599                 const AVCodecDescriptor *codec_desc = avcodec_descriptor_get(avctx->codec_id);
1600                 if( !codec_desc ) continue;
1601                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1602                         if( avctx->width < 1 ) continue;
1603                         if( avctx->height < 1 ) continue;
1604                         AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
1605                         if( framerate.num < 1 ) continue;
1606                         has_video = 1;
1607                         int vidx = ffvideo.size();
1608                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, i);
1609                         vstrm_index.append(ffidx(vidx, 0));
1610                         ffvideo.append(vid);
1611                         vid->width = avctx->width;
1612                         vid->height = avctx->height;
1613                         vid->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
1614                         double secs = to_secs(st->duration, st->time_base);
1615                         vid->length = secs * vid->frame_rate;
1616                         vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den;
1617                         vid->nudge = st->start_time;
1618                         vid->reading = -1;
1619                         if( opt_video_filter )
1620                                 ret = vid->create_filter(opt_video_filter, avctx,avctx);
1621                 }
1622                 else if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1623                         if( avctx->channels < 1 ) continue;
1624                         if( avctx->sample_rate < 1 ) continue;
1625                         has_audio = 1;
1626                         int aidx = ffaudio.size();
1627                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, i);
1628                         ffaudio.append(aud);
1629                         aud->channel0 = astrm_index.size();
1630                         aud->channels = avctx->channels;
1631                         for( int ch=0; ch<aud->channels; ++ch )
1632                                 astrm_index.append(ffidx(aidx, ch));
1633                         aud->sample_rate = avctx->sample_rate;
1634                         double secs = to_secs(st->duration, st->time_base);
1635                         aud->length = secs * aud->sample_rate;
1636                         if( avctx->sample_fmt != AV_SAMPLE_FMT_FLT ) {
1637                                 uint64_t layout = av_get_default_channel_layout(avctx->channels);
1638                                 if( !layout ) layout = ((uint64_t)1<<aud->channels) - 1;
1639                                 aud->resample_context = swr_alloc_set_opts(NULL,
1640                                         layout, AV_SAMPLE_FMT_FLT, avctx->sample_rate,
1641                                         layout, avctx->sample_fmt, avctx->sample_rate,
1642                                         0, NULL);
1643                                 swr_init(aud->resample_context);
1644                         }
1645                         aud->nudge = st->start_time;
1646                         aud->reading = -1;
1647                         if( opt_audio_filter )
1648                                 ret = aud->create_filter(opt_audio_filter, avctx,avctx);
1649                 }
1650         }
1651         if( bad_time )
1652                 printf("FFMPEG::open_decoder: some stream have bad times\n");
1653         ff_unlock();
1654         return ret < 0 ? -1 : 0;
1655 }
1656
1657
1658 int FFMPEG::init_encoder(const char *filename)
1659 {
1660         int fd = ::open(filename,O_WRONLY);
1661         if( fd < 0 ) fd = open(filename,O_WRONLY+O_CREAT,0666);
1662         if( fd < 0 ) {
1663                 eprintf(_("bad file path: %s\n"), filename);
1664                 return 1;
1665         }
1666         ::close(fd);
1667         int ret = get_file_format();
1668         if( ret > 0 ) {
1669                 eprintf(_("bad file format: %s\n"), filename);
1670                 return 1;
1671         }
1672         if( ret < 0 ) {
1673                 eprintf(_("mismatch audio/video file format: %s\n"), filename);
1674                 return 1;
1675         }
1676         ff_lock("FFMPEG::init_encoder");
1677         av_register_all();
1678         avformat_alloc_output_context2(&fmt_ctx, 0, file_format, filename);
1679         if( !fmt_ctx ) {
1680                 eprintf(_("failed: %s\n"), filename);
1681                 ret = 1;
1682         }
1683         if( !ret ) {
1684                 encoding = -1;
1685                 load_options("encode.opts", opts);
1686         }
1687         ff_unlock();
1688         return ret;
1689 }
1690
1691 int FFMPEG::open_encoder(const char *type, const char *spec)
1692 {
1693
1694         Asset *asset = file_base->asset;
1695         char *filename = asset->path;
1696         AVDictionary *sopts = 0;
1697         av_dict_copy(&sopts, opts, 0);
1698         char option_path[BCTEXTLEN];
1699         set_option_path(option_path, "%s/%s.opts", type, type);
1700         read_options(option_path, sopts);
1701         get_option_path(option_path, type, spec);
1702         char format_name[BCSTRLEN], codec_name[BCTEXTLEN];
1703         char bsfilter[BCSTRLEN], bsargs[BCTEXTLEN];
1704         if( get_encoder(option_path, format_name, codec_name, bsfilter, bsargs) ) {
1705                 eprintf(_("get_encoder failed %s:%s\n"), option_path, filename);
1706                 return 1;
1707         }
1708
1709         if( !strcmp(codec_name, CODEC_TAG_DVSD) ) strcpy(codec_name, "dv");
1710         else if( !strcmp(codec_name, CODEC_TAG_MJPEG) ) strcpy(codec_name, "mjpeg");
1711         else if( !strcmp(codec_name, CODEC_TAG_JPEG) ) strcpy(codec_name, "jpeg");
1712
1713         int ret = 0;
1714         ff_lock("FFMPEG::open_encoder");
1715         FFStream *fst = 0;
1716         AVStream *st = 0;
1717
1718         const AVCodecDescriptor *codec_desc = 0;
1719         AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
1720         if( !codec ) {
1721                 eprintf(_("cant find codec %s:%s\n"), codec_name, filename);
1722                 ret = 1;
1723         }
1724         if( !ret ) {
1725                 codec_desc = avcodec_descriptor_get(codec->id);
1726                 if( !codec_desc ) {
1727                         eprintf(_("unknown codec %s:%s\n"), codec_name, filename);
1728                         ret = 1;
1729                 }
1730         }
1731         if( !ret ) {
1732                 st = avformat_new_stream(fmt_ctx, 0);
1733                 if( !st ) {
1734                         eprintf(_("cant create stream %s:%s\n"), codec_name, filename);
1735                         ret = 1;
1736                 }
1737         }
1738         if( !ret ) {
1739                 AVCodecContext *ctx = st->codec;
1740                 switch( codec_desc->type ) {
1741                 case AVMEDIA_TYPE_AUDIO: {
1742                         if( has_audio ) {
1743                                 eprintf(_("duplicate audio %s:%s\n"), codec_name, filename);
1744                                 ret = 1;
1745                                 break;
1746                         }
1747                         has_audio = 1;
1748                         if( scan_options(asset->ff_audio_options, sopts, st) ) {
1749                                 eprintf(_("bad audio options %s:%s\n"), codec_name, filename);
1750                                 ret = 1;
1751                                 break;
1752                         }
1753                         if( asset->ff_audio_bitrate > 0 ) {
1754                                 ctx->bit_rate = asset->ff_audio_bitrate;
1755                                 char arg[BCSTRLEN];
1756                                 sprintf(arg, "%d", asset->ff_audio_bitrate);
1757                                 av_dict_set(&sopts, "b", arg, 0);
1758                         }
1759                         int aidx = ffaudio.size();
1760                         int fidx = aidx + ffvideo.size();
1761                         FFAudioStream *aud = new FFAudioStream(this, st, aidx, fidx);
1762                         ffaudio.append(aud);  fst = aud;
1763                         aud->sample_rate = asset->sample_rate;
1764                         ctx->channels = aud->channels = asset->channels;
1765                         for( int ch=0; ch<aud->channels; ++ch )
1766                                 astrm_index.append(ffidx(aidx, ch));
1767                         ctx->channel_layout =  av_get_default_channel_layout(ctx->channels);
1768                         ctx->sample_rate = check_sample_rate(codec, asset->sample_rate);
1769                         if( !ctx->sample_rate ) {
1770                                 eprintf(_("check_sample_rate failed %s\n"), filename);
1771                                 ret = 1;
1772                                 break;
1773                         }
1774                         ctx->time_base = st->time_base = (AVRational){1, aud->sample_rate};
1775                         ctx->sample_fmt = codec->sample_fmts[0];
1776                         uint64_t layout = av_get_default_channel_layout(ctx->channels);
1777                         aud->resample_context = swr_alloc_set_opts(NULL,
1778                                 layout, ctx->sample_fmt, aud->sample_rate,
1779                                 layout, AV_SAMPLE_FMT_FLT, ctx->sample_rate,
1780                                 0, NULL);
1781                         swr_init(aud->resample_context);
1782                         aud->writing = -1;
1783                         break; }
1784                 case AVMEDIA_TYPE_VIDEO: {
1785                         if( has_video ) {
1786                                 eprintf(_("duplicate video %s:%s\n"), codec_name, filename);
1787                                 ret = 1;
1788                                 break;
1789                         }
1790                         has_video = 1;
1791                         if( scan_options(asset->ff_video_options, sopts, st) ) {
1792                                 eprintf(_("bad video options %s:%s\n"), codec_name, filename);
1793                                 ret = 1;
1794                                 break;
1795                         }
1796                         if( asset->ff_video_bitrate > 0 ) {
1797                                 ctx->bit_rate = asset->ff_video_bitrate;
1798                                 char arg[BCSTRLEN];
1799                                 sprintf(arg, "%d", asset->ff_video_bitrate);
1800                                 av_dict_set(&sopts, "b", arg, 0);
1801                         }
1802                         else if( asset->ff_video_quality > 0 ) {
1803                                 ctx->global_quality = asset->ff_video_quality * FF_QP2LAMBDA;
1804                                 ctx->qmin    = ctx->qmax =  asset->ff_video_quality;
1805                                 ctx->mb_lmin = ctx->qmin * FF_QP2LAMBDA;
1806                                 ctx->mb_lmax = ctx->qmax * FF_QP2LAMBDA;
1807                                 ctx->flags |= CODEC_FLAG_QSCALE;
1808                                 char arg[BCSTRLEN];
1809                                 av_dict_set(&sopts, "flags", "+qscale", 0);
1810                                 sprintf(arg, "%d", asset->ff_video_quality);
1811                                 av_dict_set(&sopts, "qscale", arg, 0);
1812                                 sprintf(arg, "%d", ctx->global_quality);
1813                                 av_dict_set(&sopts, "global_quality", arg, 0);
1814                         }
1815                         int vidx = ffvideo.size();
1816                         int fidx = vidx + ffaudio.size();
1817                         FFVideoStream *vid = new FFVideoStream(this, st, vidx, fidx);
1818                         vstrm_index.append(ffidx(vidx, 0));
1819                         ffvideo.append(vid);  fst = vid;
1820                         vid->width = asset->width;
1821                         ctx->width = (vid->width+3) & ~3;
1822                         vid->height = asset->height;
1823                         ctx->height = (vid->height+3) & ~3;
1824                         vid->frame_rate = asset->frame_rate;
1825                         ctx->sample_aspect_ratio = to_sample_aspect_ratio(asset);
1826                         ctx->pix_fmt = codec->pix_fmts ? codec->pix_fmts[0] : AV_PIX_FMT_YUV420P;
1827                         AVRational frame_rate = check_frame_rate(codec, vid->frame_rate);
1828                         if( !frame_rate.num || !frame_rate.den ) {
1829                                 eprintf(_("check_frame_rate failed %s\n"), filename);
1830                                 ret = 1;
1831                                 break;
1832                         }
1833                         ctx->time_base = (AVRational) { frame_rate.den, frame_rate.num };
1834                         st->time_base = ctx->time_base;
1835                         vid->writing = -1;
1836                         break; }
1837                 default:
1838                         eprintf(_("not audio/video, %s:%s\n"), codec_name, filename);
1839                         ret = 1;
1840                 }
1841         }
1842         if( !ret ) {
1843                 if( fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER )
1844                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
1845
1846                 ret = avcodec_open2(st->codec, codec, &sopts);
1847                 if( ret < 0 ) {
1848                         ff_err(ret,"FFMPEG::open_encoder");
1849                         eprintf(_("open failed %s:%s\n"), codec_name, filename);
1850                         ret = 1;
1851                 }
1852                 else
1853                         ret = 0;
1854         }
1855         if( !ret ) {
1856                 if( fst && bsfilter[0] )
1857                         fst->add_bsfilter(bsfilter, !bsargs[0] ? 0 : bsargs);
1858         }
1859
1860         if( !ret )
1861                 start_muxer();
1862
1863         ff_unlock();
1864         av_dict_free(&sopts);
1865         return ret;
1866 }
1867
1868 int FFMPEG::close_encoder()
1869 {
1870         stop_muxer();
1871         if( encoding > 0 ) {
1872                 av_write_trailer(fmt_ctx);
1873                 if( !(fmt_ctx->flags & AVFMT_NOFILE) )
1874                         avio_closep(&fmt_ctx->pb);
1875         }
1876         encoding = 0;
1877         return 0;
1878 }
1879
1880 int FFMPEG::decode_activate()
1881 {
1882         if( decoding < 0 ) {
1883                 decoding = 0;
1884                 for( int vidx=0; vidx<ffvideo.size(); ++vidx )
1885                         ffvideo[vidx]->nudge = AV_NOPTS_VALUE;
1886                 for( int aidx=0; aidx<ffaudio.size(); ++aidx )
1887                         ffaudio[aidx]->nudge = AV_NOPTS_VALUE;
1888                 // set nudges for each program stream set
1889                 int npgrms = fmt_ctx->nb_programs;
1890                 for( int i=0; i<npgrms; ++i ) {
1891                         AVProgram *pgrm = fmt_ctx->programs[i];
1892                         // first start time video stream
1893                         int64_t vstart_time = -1, astart_time = -1;
1894                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1895                                 int fidx = pgrm->stream_index[j];
1896                                 AVStream *st = fmt_ctx->streams[fidx];
1897                                 AVCodecContext *avctx = st->codec;
1898                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1899                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1900                                         if( vstart_time > st->start_time ) continue;
1901                                         vstart_time = st->start_time;
1902                                         continue;
1903                                 }
1904                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1905                                         if( st->start_time == AV_NOPTS_VALUE ) continue;
1906                                         if( astart_time > st->start_time ) continue;
1907                                         astart_time = st->start_time;
1908                                         continue;
1909                                 }
1910                         }
1911                         // match program streams to max start_time
1912                         int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1913                         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
1914                                 int fidx = pgrm->stream_index[j];
1915                                 AVStream *st = fmt_ctx->streams[fidx];
1916                                 AVCodecContext *avctx = st->codec;
1917                                 if( avctx->codec_type == AVMEDIA_TYPE_VIDEO ) {
1918                                         for( int k=0; k<ffvideo.size(); ++k ) {
1919                                                 if( ffvideo[k]->fidx != fidx ) continue;
1920                                                 ffvideo[k]->nudge = nudge;
1921                                         }
1922                                         continue;
1923                                 }
1924                                 if( avctx->codec_type == AVMEDIA_TYPE_AUDIO ) {
1925                                         for( int k=0; k<ffaudio.size(); ++k ) {
1926                                                 if( ffaudio[k]->fidx != fidx ) continue;
1927                                                 ffaudio[k]->nudge = nudge;
1928                                         }
1929                                         continue;
1930                                 }
1931                         }
1932                 }
1933                 // set nudges for any streams not yet set
1934                 int64_t vstart_time = 0, astart_time = 0;
1935                 int nstreams = fmt_ctx->nb_streams;
1936                 for( int i=0; i<nstreams; ++i ) {
1937                         AVStream *st = fmt_ctx->streams[i];
1938                         AVCodecContext *avctx = st->codec;
1939                         switch( avctx->codec_type ) {
1940                         case AVMEDIA_TYPE_VIDEO: {
1941                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1942                                 int vidx = ffvideo.size();
1943                                 while( --vidx >= 0 && ffvideo[vidx]->fidx != i );
1944                                 if( vidx >= 0 && ffvideo[vidx]->nudge != AV_NOPTS_VALUE ) continue;
1945                                 if( vstart_time >= st->start_time ) continue;
1946                                 vstart_time = st->start_time;
1947                                 break; }
1948                         case AVMEDIA_TYPE_AUDIO: {
1949                                 if( st->start_time == AV_NOPTS_VALUE ) continue;
1950                                 int aidx = ffaudio.size();
1951                                 while( --aidx >= 0 && ffaudio[aidx]->fidx != i );
1952                                 if( aidx >= 0 && ffaudio[aidx]->nudge != AV_NOPTS_VALUE ) continue;
1953                                 if( astart_time >= st->start_time ) continue;
1954                                 astart_time = st->start_time;
1955                                 break; }
1956                         default: break;
1957                         }
1958                 }
1959                 int64_t nudge = vstart_time > astart_time ? vstart_time : astart_time;
1960                 for( int vidx=0; vidx<ffvideo.size(); ++vidx ) {
1961                         if( ffvideo[vidx]->nudge != AV_NOPTS_VALUE ) continue;
1962                         ffvideo[vidx]->nudge = nudge;
1963                 }
1964                 for( int aidx=0; aidx<ffaudio.size(); ++aidx ) {
1965                         if( ffaudio[aidx]->nudge != AV_NOPTS_VALUE ) continue;
1966                         ffaudio[aidx]->nudge = nudge;
1967                 }
1968                 decoding = 1;
1969         }
1970         return decoding;
1971 }
1972
1973 int FFMPEG::encode_activate()
1974 {
1975         int ret = 0;
1976         if( encoding < 0 ) {
1977                 encoding = 0;
1978                 if( !(fmt_ctx->flags & AVFMT_NOFILE) &&
1979                     (ret=avio_open(&fmt_ctx->pb, fmt_ctx->filename, AVIO_FLAG_WRITE)) < 0 ) {
1980                         ff_err(ret, "FFMPEG::encode_activate: err opening : %s\n",
1981                                 fmt_ctx->filename);
1982                         return -1;
1983                 }
1984
1985                 AVDictionary *fopts = 0;
1986                 char option_path[BCTEXTLEN];
1987                 set_option_path(option_path, "format/%s", file_format);
1988                 read_options(option_path, fopts);
1989                 ret = avformat_write_header(fmt_ctx, &fopts);
1990                 av_dict_free(&fopts);
1991                 if( ret < 0 ) {
1992                         ff_err(ret, "FFMPEG::encode_activate: write header failed %s\n",
1993                                 fmt_ctx->filename);
1994                         return -1;
1995                 }
1996                 encoding = 1;
1997         }
1998         return encoding;
1999 }
2000
2001
2002 int FFMPEG::audio_seek(int stream, int64_t pos)
2003 {
2004         int aidx = astrm_index[stream].st_idx;
2005         FFAudioStream *aud = ffaudio[aidx];
2006         aud->audio_seek(pos);
2007         return 0;
2008 }
2009
2010 int FFMPEG::video_seek(int stream, int64_t pos)
2011 {
2012         int vidx = vstrm_index[stream].st_idx;
2013         FFVideoStream *vid = ffvideo[vidx];
2014         vid->video_seek(pos);
2015         return 0;
2016 }
2017
2018
2019 int FFMPEG::decode(int chn, int64_t pos, double *samples, int len)
2020 {
2021         if( !has_audio || chn >= astrm_index.size() ) return -1;
2022         int aidx = astrm_index[chn].st_idx;
2023         FFAudioStream *aud = ffaudio[aidx];
2024         if( aud->load(pos, len) < len ) return -1;
2025         int ch = astrm_index[chn].st_ch;
2026         int ret = aud->read(samples,len,ch);
2027         return ret;
2028 }
2029
2030 int FFMPEG::decode(int layer, int64_t pos, VFrame *vframe)
2031 {
2032         if( !has_video || layer >= vstrm_index.size() ) return -1;
2033         int vidx = vstrm_index[layer].st_idx;
2034         FFVideoStream *vid = ffvideo[vidx];
2035         return vid->load(vframe, pos);
2036 }
2037
2038
2039 int FFMPEG::encode(int stream, double **samples, int len)
2040 {
2041         FFAudioStream *aud = ffaudio[stream];
2042         return aud->encode(samples, len);
2043 }
2044
2045
2046 int FFMPEG::encode(int stream, VFrame *frame)
2047 {
2048         FFVideoStream *vid = ffvideo[stream];
2049         return vid->encode(frame);
2050 }
2051
2052 void FFMPEG::start_muxer()
2053 {
2054         if( !running() ) {
2055                 done = 0;
2056                 start();
2057         }
2058 }
2059
2060 void FFMPEG::stop_muxer()
2061 {
2062         if( running() ) {
2063                 done = 1;
2064                 mux_lock->unlock();
2065         }
2066         join();
2067 }
2068
2069 void FFMPEG::flow_off()
2070 {
2071         if( !flow ) return;
2072         flow_lock->lock("FFMPEG::flow_off");
2073         flow = 0;
2074 }
2075
2076 void FFMPEG::flow_on()
2077 {
2078         if( flow ) return;
2079         flow = 1;
2080         flow_lock->unlock();
2081 }
2082
2083 void FFMPEG::flow_ctl()
2084 {
2085         while( !flow ) {
2086                 flow_lock->lock("FFMPEG::flow_ctl");
2087                 flow_lock->unlock();
2088         }
2089 }
2090
2091 int FFMPEG::mux_audio(FFrame *frm)
2092 {
2093         FFPacket pkt;
2094         FFStream *fst = frm->fst;
2095         AVCodecContext *ctx = fst->st->codec;
2096         AVFrame *frame = *frm;
2097         AVRational tick_rate = {1, ctx->sample_rate};
2098         frame->pts = av_rescale_q(frm->position, tick_rate, ctx->time_base);
2099         int got_packet = 0;
2100         int ret = fst->encode_frame(pkt, frame, got_packet);
2101         if( ret >= 0 && got_packet )
2102                 ret = fst->write_packet(pkt);
2103         if( ret < 0 )
2104                 ff_err(ret, "FFMPEG::mux_audio");
2105         return ret >= 0 ? 0 : 1;
2106 }
2107
2108 int FFMPEG::mux_video(FFrame *frm)
2109 {
2110         FFPacket pkt;
2111         FFStream *fst = frm->fst;
2112         AVFrame *frame = *frm;
2113         frame->pts = frm->position;
2114         int got_packet = 0;
2115         int ret = fst->encode_frame(pkt, frame, got_packet);
2116         if( ret >= 0 && got_packet )
2117                 ret = fst->write_packet(pkt);
2118         if( ret < 0 )
2119                 ff_err(ret, "FFMPEG::mux_video");
2120         return ret >= 0 ? 0 : 1;
2121 }
2122
2123 void FFMPEG::mux()
2124 {
2125         for(;;) {
2126                 double atm = -1, vtm = -1;
2127                 FFrame *afrm = 0, *vfrm = 0;
2128                 int demand = 0;
2129                 for( int i=0; i<ffaudio.size(); ++i ) {  // earliest audio
2130                         FFStream *fst = ffaudio[i];
2131                         if( fst->frm_count < 3 ) { demand = 1; flow_on(); }
2132                         FFrame *frm = fst->frms.first;
2133                         if( !frm ) { if( !done ) return; continue; }
2134                         double tm = to_secs(frm->position, fst->st->codec->time_base);
2135                         if( atm < 0 || tm < atm ) { atm = tm;  afrm = frm; }
2136                 }
2137                 for( int i=0; i<ffvideo.size(); ++i ) {  // earliest video
2138                         FFStream *fst = ffvideo[i];
2139                         if( fst->frm_count < 2 ) { demand = 1; flow_on(); }
2140                         FFrame *frm = fst->frms.first;
2141                         if( !frm ) { if( !done ) return; continue; }
2142                         double tm = to_secs(frm->position, fst->st->codec->time_base);
2143                         if( vtm < 0 || tm < vtm ) { vtm = tm;  vfrm = frm; }
2144                 }
2145                 if( !demand ) flow_off();
2146                 if( !afrm && !vfrm ) break;
2147                 int v = !afrm ? -1 : !vfrm ? 1 : av_compare_ts(
2148                         vfrm->position, vfrm->fst->st->codec->time_base,
2149                         afrm->position, afrm->fst->st->codec->time_base);
2150                 FFrame *frm = v <= 0 ? vfrm : afrm;
2151                 if( frm == afrm ) mux_audio(frm);
2152                 if( frm == vfrm ) mux_video(frm);
2153                 frm->dequeue();
2154                 delete frm;
2155         }
2156 }
2157
2158 void FFMPEG::run()
2159 {
2160         while( !done ) {
2161                 mux_lock->lock("FFMPEG::run");
2162                 if( !done ) mux();
2163         }
2164         mux();
2165         for( int i=0; i<ffaudio.size(); ++i )
2166                 ffaudio[i]->flush();
2167         for( int i=0; i<ffvideo.size(); ++i )
2168                 ffvideo[i]->flush();
2169 }
2170
2171
2172 int FFMPEG::ff_total_audio_channels()
2173 {
2174         return astrm_index.size();
2175 }
2176
2177 int FFMPEG::ff_total_astreams()
2178 {
2179         return ffaudio.size();
2180 }
2181
2182 int FFMPEG::ff_audio_channels(int stream)
2183 {
2184         return ffaudio[stream]->channels;
2185 }
2186
2187 int FFMPEG::ff_sample_rate(int stream)
2188 {
2189         return ffaudio[stream]->sample_rate;
2190 }
2191
2192 const char* FFMPEG::ff_audio_format(int stream)
2193 {
2194         AVStream *st = ffaudio[stream]->st;
2195         AVCodecID id = st->codec->codec_id;
2196         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
2197         return desc ? desc->name : _("Unknown");
2198 }
2199
2200 int FFMPEG::ff_audio_pid(int stream)
2201 {
2202         return ffaudio[stream]->st->id;
2203 }
2204
2205 int64_t FFMPEG::ff_audio_samples(int stream)
2206 {
2207         return ffaudio[stream]->length;
2208 }
2209
2210 // find audio astream/channels with this program,
2211 //   or all program audio channels (astream=-1)
2212 int FFMPEG::ff_audio_for_video(int vstream, int astream, int64_t &channel_mask)
2213 {
2214         channel_mask = 0;
2215         int pidx = -1;
2216         int vidx = ffvideo[vstream]->fidx;
2217         // find first program with this video stream
2218         for( int i=0; pidx<0 && i<(int)fmt_ctx->nb_programs; ++i ) {
2219                 AVProgram *pgrm = fmt_ctx->programs[i];
2220                 for( int j=0;  pidx<0 && j<(int)pgrm->nb_stream_indexes; ++j ) {
2221                         int st_idx = pgrm->stream_index[j];
2222                         AVStream *st = fmt_ctx->streams[st_idx];
2223                         if( st->codec->codec_type != AVMEDIA_TYPE_VIDEO ) continue;
2224                         if( st_idx == vidx ) pidx = i;
2225                 }
2226         }
2227         if( pidx < 0 ) return -1;
2228         int ret = -1;
2229         int64_t channels = 0;
2230         AVProgram *pgrm = fmt_ctx->programs[pidx];
2231         for( int j=0; j<(int)pgrm->nb_stream_indexes; ++j ) {
2232                 int aidx = pgrm->stream_index[j];
2233                 AVStream *st = fmt_ctx->streams[aidx];
2234                 if( st->codec->codec_type != AVMEDIA_TYPE_AUDIO ) continue;
2235                 if( astream > 0 ) { --astream;  continue; }
2236                 int astrm = -1;
2237                 for( int i=0; astrm<0 && i<ffaudio.size(); ++i )
2238                         if( ffaudio[i]->fidx == aidx ) astrm = i;
2239                 if( astrm >= 0 ) {
2240                         if( ret < 0 ) ret = astrm;
2241                         int64_t mask = (1 << ffaudio[astrm]->channels) - 1;
2242                         channels |= mask << ffaudio[astrm]->channel0;
2243                 }
2244                 if( !astream ) break;
2245         }
2246         channel_mask = channels;
2247         return ret;
2248 }
2249
2250
2251 int FFMPEG::ff_total_video_layers()
2252 {
2253         return vstrm_index.size();
2254 }
2255
2256 int FFMPEG::ff_total_vstreams()
2257 {
2258         return ffvideo.size();
2259 }
2260
2261 int FFMPEG::ff_video_width(int stream)
2262 {
2263         return ffvideo[stream]->width;
2264 }
2265
2266 int FFMPEG::ff_video_height(int stream)
2267 {
2268         return ffvideo[stream]->height;
2269 }
2270
2271 int FFMPEG::ff_set_video_width(int stream, int width)
2272 {
2273         int w = ffvideo[stream]->width;
2274         ffvideo[stream]->width = width;
2275         return w;
2276 }
2277
2278 int FFMPEG::ff_set_video_height(int stream, int height)
2279 {
2280         int h = ffvideo[stream]->height;
2281         ffvideo[stream]->height = height;
2282         return h;
2283 }
2284
2285 int FFMPEG::ff_coded_width(int stream)
2286 {
2287         AVStream *st = ffvideo[stream]->st;
2288         return st->codec->coded_width;
2289 }
2290
2291 int FFMPEG::ff_coded_height(int stream)
2292 {
2293         AVStream *st = ffvideo[stream]->st;
2294         return st->codec->coded_height;
2295 }
2296
2297 float FFMPEG::ff_aspect_ratio(int stream)
2298 {
2299         return ffvideo[stream]->aspect_ratio;
2300 }
2301
2302 const char* FFMPEG::ff_video_format(int stream)
2303 {
2304         AVStream *st = ffvideo[stream]->st;
2305         AVCodecID id = st->codec->codec_id;
2306         const AVCodecDescriptor *desc = avcodec_descriptor_get(id);
2307         return desc ? desc->name : _("Unknown");
2308 }
2309
2310 double FFMPEG::ff_frame_rate(int stream)
2311 {
2312         return ffvideo[stream]->frame_rate;
2313 }
2314
2315 int64_t FFMPEG::ff_video_frames(int stream)
2316 {
2317         return ffvideo[stream]->length;
2318 }
2319
2320 int FFMPEG::ff_video_pid(int stream)
2321 {
2322         return ffvideo[stream]->st->id;
2323 }
2324
2325
2326 int FFMPEG::ff_cpus()
2327 {
2328         return file_base->file->cpus;
2329 }
2330
2331 int FFVideoStream::create_filter(const char *filter_spec,
2332                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
2333 {
2334         avfilter_register_all();
2335         const char *sp = filter_spec;
2336         char filter_name[BCSTRLEN], *np = filter_name;
2337         int i = sizeof(filter_name);
2338         while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
2339         *np = 0;
2340         AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
2341         if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_VIDEO ) {
2342                 ff_err(AVERROR(EINVAL), "FFVideoStream::create_filter: %s\n", filter_spec);
2343                 return -1;
2344         }
2345         filter_graph = avfilter_graph_alloc();
2346         AVFilter *buffersrc = avfilter_get_by_name("buffer");
2347         AVFilter *buffersink = avfilter_get_by_name("buffersink");
2348
2349         int ret = 0;  char args[BCTEXTLEN];
2350         snprintf(args, sizeof(args),
2351                 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
2352                 src_ctx->width, src_ctx->height, src_ctx->pix_fmt,
2353                 src_ctx->time_base.num, src_ctx->time_base.den,
2354                 src_ctx->sample_aspect_ratio.num, src_ctx->sample_aspect_ratio.den);
2355         if( ret >= 0 )
2356                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2357                         args, NULL, filter_graph);
2358         if( ret >= 0 )
2359                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2360                         NULL, NULL, filter_graph);
2361         if( ret >= 0 )
2362                 ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
2363                         (uint8_t*)&sink_ctx->pix_fmt, sizeof(sink_ctx->pix_fmt),
2364                         AV_OPT_SEARCH_CHILDREN);
2365         if( ret < 0 )
2366                 ff_err(ret, "FFVideoStream::create_filter");
2367         else
2368                 ret = FFStream::create_filter(filter_spec);
2369         return ret >= 0 ? 0 : -1;
2370 }
2371
2372 int FFAudioStream::create_filter(const char *filter_spec,
2373                 AVCodecContext *src_ctx, AVCodecContext *sink_ctx)
2374 {
2375         avfilter_register_all();
2376         const char *sp = filter_spec;
2377         char filter_name[BCSTRLEN], *np = filter_name;
2378         int i = sizeof(filter_name);
2379         while( --i>=0 && *sp!=0 && !strchr(" \t:=,",*sp) ) *np++ = *sp++;
2380         *np = 0;
2381         AVFilter *filter = !filter_name[0] ? 0 : avfilter_get_by_name(filter_name);
2382         if( !filter || avfilter_pad_get_type(filter->inputs,0) != AVMEDIA_TYPE_AUDIO ) {
2383                 ff_err(AVERROR(EINVAL), "FFAudioStream::create_filter: %s\n", filter_spec);
2384                 return -1;
2385         }
2386         filter_graph = avfilter_graph_alloc();
2387         AVFilter *buffersrc = avfilter_get_by_name("abuffer");
2388         AVFilter *buffersink = avfilter_get_by_name("abuffersink");
2389         int ret = 0;  char args[BCTEXTLEN];
2390         snprintf(args, sizeof(args),
2391                 "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%jx",
2392                 src_ctx->time_base.num, src_ctx->time_base.den, src_ctx->sample_rate,
2393                 av_get_sample_fmt_name(src_ctx->sample_fmt), src_ctx->channel_layout);
2394         if( ret >= 0 )
2395                 ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
2396                         args, NULL, filter_graph);
2397         if( ret >= 0 )
2398                 ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
2399                         NULL, NULL, filter_graph);
2400         if( ret >= 0 )
2401                 ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
2402                         (uint8_t*)&sink_ctx->sample_fmt, sizeof(sink_ctx->sample_fmt),
2403                         AV_OPT_SEARCH_CHILDREN);
2404         if( ret >= 0 )
2405                 ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
2406                         (uint8_t*)&sink_ctx->channel_layout,
2407                         sizeof(sink_ctx->channel_layout), AV_OPT_SEARCH_CHILDREN);
2408         if( ret >= 0 )
2409                 ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
2410                         (uint8_t*)&sink_ctx->sample_rate, sizeof(sink_ctx->sample_rate),
2411                         AV_OPT_SEARCH_CHILDREN);
2412         if( ret < 0 )
2413                 ff_err(ret, "FFAudioStream::create_filter");
2414         else
2415                 ret = FFStream::create_filter(filter_spec);
2416         return ret >= 0 ? 0 : -1;
2417 }
2418
2419 int FFStream::create_filter(const char *filter_spec)
2420 {
2421         /* Endpoints for the filter graph. */
2422         AVFilterInOut *outputs = avfilter_inout_alloc();
2423         outputs->name = av_strdup("in");
2424         outputs->filter_ctx = buffersrc_ctx;
2425         outputs->pad_idx = 0;
2426         outputs->next = 0;
2427
2428         AVFilterInOut *inputs  = avfilter_inout_alloc();
2429         inputs->name = av_strdup("out");
2430         inputs->filter_ctx = buffersink_ctx;
2431         inputs->pad_idx = 0;
2432         inputs->next = 0;
2433
2434         int ret = !outputs->name || !inputs->name ? -1 : 0;
2435         if( ret >= 0 )
2436                 ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
2437                         &inputs, &outputs, NULL);
2438         if( ret >= 0 )
2439                 ret = avfilter_graph_config(filter_graph, NULL);
2440
2441         if( ret < 0 ) {
2442                 ff_err(ret, "FFStream::create_filter");
2443                 avfilter_graph_free(&filter_graph);
2444                 filter_graph = 0;
2445         }
2446         avfilter_inout_free(&inputs);
2447         avfilter_inout_free(&outputs);
2448         return ret;
2449 }
2450
2451 void FFStream::add_bsfilter(const char *bsf, const char *ap)
2452 {
2453         bsfilter.append(new BSFilter(bsf,ap));
2454 }
2455
2456 int FFStream::bs_filter(AVPacket *pkt)
2457 {
2458         if( !bsfilter.size() ) return 0;
2459         av_packet_split_side_data(pkt);
2460
2461         int ret = 0;
2462         for( int i=0; i<bsfilter.size(); ++i ) {
2463                 AVPacket bspkt = *pkt;
2464                 ret = av_bitstream_filter_filter(bsfilter[i]->bsfc,
2465                          st->codec, bsfilter[i]->args, &bspkt.data, &bspkt.size,
2466                          pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY);
2467                 if( ret < 0 ) break;
2468                 int size = bspkt.size;
2469                 uint8_t *data = bspkt.data;
2470                 if( !ret && bspkt.data != pkt->data ) {
2471                         size = bspkt.size;
2472                         data = (uint8_t *)av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2473                         if( !data ) { ret = AVERROR(ENOMEM);  break; }
2474                         memcpy(data, bspkt.data, size);
2475                         memset(data+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2476                         ret = 1;
2477                 }
2478                 if( ret > 0 ) {
2479                         pkt->side_data = 0;  pkt->side_data_elems = 0;
2480                         av_packet_unref(pkt);
2481                         ret = av_packet_from_data(&bspkt, data, size);
2482                         if( ret < 0 ) break;
2483                 }
2484                 *pkt = bspkt;
2485         }
2486         if( ret < 0 )
2487                 ff_err(ret,"FFStream::bs_filter");
2488         return ret;
2489 }
2490
2491 int FFMPEG::scan(IndexState *index_state, int64_t *scan_position, int *canceled)
2492 {
2493         AVPacket pkt;
2494         av_init_packet(&pkt);
2495         AVFrame *frame = av_frame_alloc();
2496         if( !frame ) {
2497                 fprintf(stderr,"FFMPEG::scan: ");
2498                 fprintf(stderr,_("av_frame_alloc failed\n"));
2499                 return -1;
2500         }
2501
2502         index_state->add_video_markers(ffvideo.size());
2503         index_state->add_audio_markers(ffaudio.size());
2504
2505         for( int i=0; i<(int)fmt_ctx->nb_streams; ++i ) {
2506                 AVDictionary *copts = 0;
2507                 av_dict_copy(&copts, opts, 0);
2508                 AVStream *st = fmt_ctx->streams[i];
2509                 AVCodecID codec_id = st->codec->codec_id;
2510                 AVCodec *decoder = avcodec_find_decoder(codec_id);
2511                 if( avcodec_open2(st->codec, decoder, &copts) < 0 ) {
2512                         fprintf(stderr,"FFMPEG::scan: ");
2513                         fprintf(stderr,_("codec open failed\n"));
2514                 }
2515                 av_dict_free(&copts);
2516         }
2517         int errs = 0;
2518         for( int64_t count=0; !*canceled; ++count ) {
2519                 av_packet_unref(&pkt);
2520                 pkt.data = 0; pkt.size = 0;
2521
2522                 int ret = av_read_frame(fmt_ctx, &pkt);
2523                 if( ret < 0 ) {
2524                         if( ret == AVERROR_EOF ) break;
2525                         if( ++errs > 100 ) {
2526                                 ff_err(ret,_("over 100 read_frame errs\n"));
2527                                 break;
2528                         }
2529                         continue;
2530                 }
2531                 if( !pkt.data ) continue;
2532                 int i = pkt.stream_index;
2533                 if( i < 0 || i >= (int)fmt_ctx->nb_streams ) continue;
2534                 AVStream *st = fmt_ctx->streams[i];
2535                 AVCodecContext *avctx = st->codec;
2536                 if( pkt.pos > *scan_position ) *scan_position = pkt.pos;
2537
2538                 switch( avctx->codec_type ) {
2539                 case AVMEDIA_TYPE_VIDEO: {
2540                         int vidx = ffvideo.size();
2541                         while( --vidx>=0 && ffvideo[vidx]->fidx != i );
2542                         if( vidx < 0 ) break;
2543                         FFVideoStream *vid = ffvideo[vidx];
2544                         int64_t tstmp = pkt.dts;
2545                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.pts;
2546                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
2547                                 if( vid->nudge != AV_NOPTS_VALUE ) tstmp -= vid->nudge;
2548                                 double secs = to_secs(tstmp, st->time_base);
2549                                 int64_t frm = secs * vid->frame_rate + 0.5;
2550                                 if( frm < 0 ) frm = 0;
2551                                 index_state->put_video_mark(vidx, frm, pkt.pos);
2552                         }
2553 #if 0
2554                         while( pkt.size > 0 ) {
2555                                 av_frame_unref(frame);
2556                                 int got_frame = 0;
2557                                 int ret = vid->decode_frame(&pkt, frame, got_frame);
2558                                 if( ret <= 0 ) break;
2559 //                              if( got_frame ) {}
2560                                 pkt.data += ret;
2561                                 pkt.size -= ret;
2562                         }
2563 #endif
2564                         break; }
2565                 case AVMEDIA_TYPE_AUDIO: {
2566                         int aidx = ffaudio.size();
2567                         while( --aidx>=0 && ffaudio[aidx]->fidx != i );
2568                         if( aidx < 0 ) break;
2569                         FFAudioStream *aud = ffaudio[aidx];
2570                         int64_t tstmp = pkt.pts;
2571                         if( tstmp == AV_NOPTS_VALUE ) tstmp = pkt.dts;
2572                         if( tstmp != AV_NOPTS_VALUE && (pkt.flags & AV_PKT_FLAG_KEY) && pkt.pos > 0 ) {
2573                                 if( aud->nudge != AV_NOPTS_VALUE ) tstmp -= aud->nudge;
2574                                 double secs = to_secs(tstmp, st->time_base);
2575                                 int64_t sample = secs * aud->sample_rate + 0.5;
2576                                 if( sample < 0 ) sample = 0;
2577                                 index_state->put_audio_mark(aidx, sample, pkt.pos);
2578                         }
2579                         while( pkt.size > 0 ) {
2580                                 int ch = aud->channel0,  nch = aud->channels;
2581                                 int64_t pos = index_state->pos(ch);
2582                                 if( pos != aud->curr_pos ) {
2583 if( abs(pos-aud->curr_pos) > 1 )
2584 printf("audio%d pad %jd %jd (%jd)\n", aud->idx, pos, aud->curr_pos, pos-aud->curr_pos);
2585                                         index_state->pad_data(ch, nch, aud->curr_pos);
2586                                 }
2587                                 av_frame_unref(frame);
2588                                 int got_frame = 0;
2589                                 int ret = aud->decode_frame(&pkt, frame, got_frame);
2590                                 if( ret <= 0 ) break;
2591                                 if( got_frame && frame->channels == nch ) {
2592                                         float *samples;
2593                                         int len = aud->get_samples(samples,
2594                                                  &frame->extended_data[0], frame->nb_samples);
2595                                         for( int i=0; i<nch; ++i )
2596                                                 index_state->put_data(ch+i,nch,samples+i,len);
2597                                         aud->curr_pos += len;
2598                                 }
2599                                 pkt.data += ret;
2600                                 pkt.size -= ret;
2601                         }
2602                         break; }
2603                 default: break;
2604                 }
2605         }
2606         av_frame_free(&frame);
2607         return 0;
2608 }
2609
2610 void FFStream::load_markers(IndexMarks &marks, double rate)
2611 {
2612         int in = 0;
2613         int64_t sz = marks.size();
2614         int max_entries = fmt_ctx->max_index_size / sizeof(AVIndexEntry) - 1;
2615         int nb_ent = st->nb_index_entries;
2616 // some formats already have an index
2617         if( nb_ent > 0 ) {
2618                 AVIndexEntry *ep = &st->index_entries[nb_ent-1];
2619                 int64_t tstmp = ep->timestamp;
2620                 if( nudge != AV_NOPTS_VALUE ) tstmp -= nudge;
2621                 double secs = ffmpeg->to_secs(tstmp, st->time_base);
2622                 int64_t no = secs * rate;
2623                 while( in < sz && marks[in].no <= no ) ++in;
2624         }
2625         int64_t len = sz - in;
2626         int64_t count = max_entries - nb_ent;
2627         if( count > len ) count = len;
2628         for( int i=0; i<count; ++i ) {
2629                 int k = in + i * len / count;
2630                 int64_t no = marks[k].no, pos = marks[k].pos;
2631                 double secs = (double)no / rate;
2632                 int64_t tstmp = secs * st->time_base.den / st->time_base.num;
2633                 if( nudge != AV_NOPTS_VALUE ) tstmp += nudge;
2634                 av_add_index_entry(st, pos, tstmp, 0, 0, AVINDEX_KEYFRAME);
2635         }
2636 }
2637