libmpdemux/demuxer.c

   1 /*
   2  * DEMUXER v2.5
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * MPlayer is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28
  29 #include "config.h"
  30 #include "options.h"
  31 #include "talloc.h"
  32 #include "mp_msg.h"
  33 #include "help_mp.h"
  34 #include "m_config.h"
  35
  36 #include "libvo/fastmemcpy.h"
  37
  38 #include "stream/stream.h"
  39 #include "demuxer.h"
  40 #include "stheader.h"
  41 #include "mf.h"
  42
  43 #include "libaf/af_format.h"
  44 #include "libmpcodecs/dec_teletext.h"
  45
  46 #include "ass_mp.h"
  47
  48 #ifdef CONFIG_LIBAVCODEC
  49 #include "libavcodec/avcodec.h"
  50 #if MP_INPUT_BUFFER_PADDING_SIZE < FF_INPUT_BUFFER_PADDING_SIZE
  51 #error MP_INPUT_BUFFER_PADDING_SIZE is too small!
  52 #endif
  53 #endif
  54
  55 // This is quite experimental, in particular it will mess up the pts values
  56 // in the queue - on the other hand it might fix some issues like generating
  57 // broken files with mencoder and stream copy.
  58 // Better leave it disabled for now, if we find no use for it this code should
  59 // just be removed again.
  60 #define PARSE_ON_ADD 0
  61
  62 void resync_video_stream(sh_video_t *sh_video);
  63 void resync_audio_stream(sh_audio_t *sh_audio);
  64
  65 // Demuxer list
  66 extern const demuxer_desc_t demuxer_desc_rawaudio;
  67 extern const demuxer_desc_t demuxer_desc_rawvideo;
  68 extern const demuxer_desc_t demuxer_desc_tv;
  69 extern const demuxer_desc_t demuxer_desc_mf;
  70 extern const demuxer_desc_t demuxer_desc_avi;
  71 extern const demuxer_desc_t demuxer_desc_y4m;
  72 extern const demuxer_desc_t demuxer_desc_asf;
  73 extern const demuxer_desc_t demuxer_desc_real;
  74 extern const demuxer_desc_t demuxer_desc_smjpeg;
  75 extern const demuxer_desc_t demuxer_desc_matroska;
  76 extern const demuxer_desc_t demuxer_desc_realaudio;
  77 extern const demuxer_desc_t demuxer_desc_vqf;
  78 extern const demuxer_desc_t demuxer_desc_mov;
  79 extern const demuxer_desc_t demuxer_desc_vivo;
  80 extern const demuxer_desc_t demuxer_desc_fli;
  81 extern const demuxer_desc_t demuxer_desc_film;
  82 extern const demuxer_desc_t demuxer_desc_roq;
  83 extern const demuxer_desc_t demuxer_desc_gif;
  84 extern const demuxer_desc_t demuxer_desc_ogg;
  85 extern const demuxer_desc_t demuxer_desc_avs;
  86 extern const demuxer_desc_t demuxer_desc_pva;
  87 extern const demuxer_desc_t demuxer_desc_nsv;
  88 extern const demuxer_desc_t demuxer_desc_mpeg_ts;
  89 extern const demuxer_desc_t demuxer_desc_lmlm4;
  90 extern const demuxer_desc_t demuxer_desc_mpeg_ps;
  91 extern const demuxer_desc_t demuxer_desc_mpeg_pes;
  92 extern const demuxer_desc_t demuxer_desc_mpeg_es;
  93 extern const demuxer_desc_t demuxer_desc_mpeg_gxf;
  94 extern const demuxer_desc_t demuxer_desc_mpeg4_es;
  95 extern const demuxer_desc_t demuxer_desc_h264_es;
  96 extern const demuxer_desc_t demuxer_desc_rawdv;
  97 extern const demuxer_desc_t demuxer_desc_mpc;
  98 extern const demuxer_desc_t demuxer_desc_audio;
  99 extern const demuxer_desc_t demuxer_desc_xmms;
 100 extern const demuxer_desc_t demuxer_desc_mpeg_ty;
 101 extern const demuxer_desc_t demuxer_desc_rtp;
 102 extern const demuxer_desc_t demuxer_desc_rtp_nemesi;
 103 extern const demuxer_desc_t demuxer_desc_lavf;
 104 extern const demuxer_desc_t demuxer_desc_lavf_preferred;
 105 extern const demuxer_desc_t demuxer_desc_aac;
 106 extern const demuxer_desc_t demuxer_desc_nut;
 107 extern const demuxer_desc_t demuxer_desc_mng;
 108
 109 /* Please do not add any new demuxers here. If you want to implement a new
 110  * demuxer, add it to libavformat, except for wrappers around external
 111  * libraries and demuxers requiring binary support. */
 112
 113 const demuxer_desc_t *const demuxer_list[] = {
 114     &demuxer_desc_rawaudio,
 115     &demuxer_desc_rawvideo,
 116 #ifdef CONFIG_TV
 117     &demuxer_desc_tv,
 118 #endif
 119     &demuxer_desc_mf,
 120 #ifdef CONFIG_LIBAVFORMAT
 121     &demuxer_desc_lavf_preferred,
 122 #endif
 123     &demuxer_desc_avi,
 124     &demuxer_desc_y4m,
 125     &demuxer_desc_asf,
 126     &demuxer_desc_nsv,
 127     &demuxer_desc_real,
 128     &demuxer_desc_smjpeg,
 129     &demuxer_desc_matroska,
 130     &demuxer_desc_realaudio,
 131     &demuxer_desc_vqf,
 132     &demuxer_desc_mov,
 133     &demuxer_desc_vivo,
 134     &demuxer_desc_fli,
 135     &demuxer_desc_film,
 136     &demuxer_desc_roq,
 137 #ifdef CONFIG_GIF
 138     &demuxer_desc_gif,
 139 #endif
 140 #ifdef CONFIG_OGGVORBIS
 141     &demuxer_desc_ogg,
 142 #endif
 143 #ifdef CONFIG_WIN32DLL
 144     &demuxer_desc_avs,
 145 #endif
 146     &demuxer_desc_pva,
 147     &demuxer_desc_mpeg_ts,
 148     &demuxer_desc_lmlm4,
 149     &demuxer_desc_mpeg_ps,
 150     &demuxer_desc_mpeg_pes,
 151     &demuxer_desc_mpeg_es,
 152     &demuxer_desc_mpeg_gxf,
 153     &demuxer_desc_mpeg4_es,
 154     &demuxer_desc_h264_es,
 155     &demuxer_desc_audio,
 156     &demuxer_desc_mpeg_ty,
 157 #ifdef CONFIG_LIVE555
 158     &demuxer_desc_rtp,
 159 #endif
 160 #ifdef CONFIG_LIBNEMESI
 161     &demuxer_desc_rtp_nemesi,
 162 #endif
 163 #ifdef CONFIG_LIBAVFORMAT
 164     &demuxer_desc_lavf,
 165 #endif
 166 #ifdef CONFIG_MUSEPACK
 167     &demuxer_desc_mpc,
 168 #endif
 169 #ifdef CONFIG_LIBDV095
 170     &demuxer_desc_rawdv,
 171 #endif
 172     &demuxer_desc_aac,
 173 #ifdef CONFIG_LIBNUT
 174     &demuxer_desc_nut,
 175 #endif
 176 #ifdef CONFIG_XMMS
 177     &demuxer_desc_xmms,
 178 #endif
 179 #ifdef CONFIG_MNG
 180     &demuxer_desc_mng,
 181 #endif
 182     /* Please do not add any new demuxers here. If you want to implement a new
 183      * demuxer, add it to libavformat, except for wrappers around external
 184      * libraries and demuxers requiring binary support. */
 185     NULL
 186 };
 187
 188 void free_demuxer_stream(demux_stream_t *ds)
 189 {
 190     ds_free_packs(ds);
 191     free(ds);
 192 }
 193
 194 demux_stream_t *new_demuxer_stream(struct demuxer *demuxer, int id)
 195 {
 196     demux_stream_t *ds = malloc(sizeof(demux_stream_t));
 197     *ds = (demux_stream_t){
 198         .id = id,
 199         .demuxer = demuxer,
 200         .asf_seq = -1,
 201     };
 202     return ds;
 203 }
 204
 205
 206 /**
 207  * Get demuxer description structure for a given demuxer type
 208  *
 209  * @param file_format    type of the demuxer
 210  * @return               structure for the demuxer, NULL if not found
 211  */
 212 static const demuxer_desc_t *get_demuxer_desc_from_type(int file_format)
 213 {
 214     int i;
 215
 216     for (i = 0; demuxer_list[i]; i++)
 217         if (file_format == demuxer_list[i]->type)
 218             return demuxer_list[i];
 219
 220     return NULL;
 221 }
 222
 223
 224 demuxer_t *new_demuxer(struct MPOpts *opts, stream_t *stream, int type,
 225                        int a_id, int v_id, int s_id, char *filename)
 226 {
 227     struct demuxer *d = talloc_zero(NULL, struct demuxer);
 228     d->stream = stream;
 229     d->stream_pts = MP_NOPTS_VALUE;
 230     d->reference_clock = MP_NOPTS_VALUE;
 231     d->movi_start = stream->start_pos;
 232     d->movi_end = stream->end_pos;
 233     d->seekable = 1;
 234     d->synced = 0;
 235     d->filepos = -1;
 236     d->audio = new_demuxer_stream(d, a_id);
 237     d->video = new_demuxer_stream(d, v_id);
 238     d->sub = new_demuxer_stream(d, s_id);
 239     d->type = type;
 240     d->opts = opts;
 241     if (type)
 242         if (!(d->desc = get_demuxer_desc_from_type(type)))
 243             mp_msg(MSGT_DEMUXER, MSGL_ERR,
 244                    "BUG! Invalid demuxer type in new_demuxer(), "
 245                    "big troubles ahead.");
 246     if (filename) // Filename hack for avs_check_file
 247         d->filename = strdup(filename);
 248     stream_reset(stream);
 249     stream_seek(stream, stream->start_pos);
 250     return d;
 251 }
 252
 253 sh_sub_t *new_sh_sub_sid(demuxer_t *demuxer, int id, int sid)
 254 {
 255     if (id > MAX_S_STREAMS - 1 || id < 0) {
 256         mp_msg(MSGT_DEMUXER, MSGL_WARN,
 257                "Requested sub stream id overflow (%d > %d)\n", id,
 258                MAX_S_STREAMS);
 259         return NULL;
 260     }
 261     if (demuxer->s_streams[id])
 262         mp_msg(MSGT_DEMUXER, MSGL_WARN, "Sub stream %i redefined\n", id);
 263     else {
 264         sh_sub_t *sh = calloc(1, sizeof(sh_sub_t));
 265         demuxer->s_streams[id] = sh;
 266         sh->sid = sid;
 267         sh->opts = demuxer->opts;
 268         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SUBTITLE_ID=%d\n", sid);
 269     }
 270     if (sid == demuxer->opts->sub_id) {
 271         demuxer->sub->id = id;
 272         demuxer->sub->sh = demuxer->s_streams[id];
 273     }
 274     return demuxer->s_streams[id];
 275 }
 276
 277 static void free_sh_sub(sh_sub_t *sh)
 278 {
 279     mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing sh_sub at %p\n", sh);
 280     free(sh->extradata);
 281 #ifdef CONFIG_ASS
 282     if (sh->ass_track)
 283         ass_free_track(sh->ass_track);
 284 #endif
 285     free(sh->lang);
 286 #ifdef CONFIG_LIBAVCODEC
 287     av_parser_close(sh->parser);
 288     av_freep(&sh->avctx);
 289 #endif
 290     free(sh);
 291 }
 292
 293 sh_audio_t *new_sh_audio_aid(demuxer_t *demuxer, int id, int aid)
 294 {
 295     if (id > MAX_A_STREAMS - 1 || id < 0) {
 296         mp_msg(MSGT_DEMUXER, MSGL_WARN,
 297                "Requested audio stream id overflow (%d > %d)\n", id,
 298                MAX_A_STREAMS);
 299         return NULL;
 300     }
 301     if (demuxer->a_streams[id]) {
 302         mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "WARNING: Audio stream header %d redefined.\n", id);
 303     } else {
 304         mp_tmsg(MSGT_DEMUXER, MSGL_V, "==> Found audio stream: %d\n", id);
 305         sh_audio_t *sh = calloc(1, sizeof(sh_audio_t));
 306         demuxer->a_streams[id] = sh;
 307         sh->aid = aid;
 308         sh->ds = demuxer->audio;
 309         // set some defaults
 310         sh->samplesize = 2;
 311         sh->sample_format = AF_FORMAT_S16_NE;
 312         sh->audio_out_minsize = 8192;   /* default size, maybe not enough for Win32/ACM */
 313         sh->pts = MP_NOPTS_VALUE;
 314         sh->opts = demuxer->opts;
 315         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AUDIO_ID=%d\n", aid);
 316     }
 317     return demuxer->a_streams[id];
 318 }
 319
 320 void free_sh_audio(demuxer_t *demuxer, int id)
 321 {
 322     sh_audio_t *sh = demuxer->a_streams[id];
 323     demuxer->a_streams[id] = NULL;
 324     mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing sh_audio at %p\n", sh);
 325     free(sh->wf);
 326     free(sh->codecdata);
 327     free(sh->lang);
 328 #ifdef CONFIG_LIBAVCODEC
 329     av_parser_close(sh->parser);
 330     av_freep(&sh->avctx);
 331 #endif
 332     free(sh);
 333 }
 334
 335 sh_video_t *new_sh_video_vid(demuxer_t *demuxer, int id, int vid)
 336 {
 337     if (id > MAX_V_STREAMS - 1 || id < 0) {
 338         mp_msg(MSGT_DEMUXER, MSGL_WARN,
 339                "Requested video stream id overflow (%d > %d)\n", id,
 340                MAX_V_STREAMS);
 341         return NULL;
 342     }
 343     if (demuxer->v_streams[id])
 344         mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "WARNING: Video stream header %d redefined.\n", id);
 345     else {
 346         mp_tmsg(MSGT_DEMUXER, MSGL_V, "==> Found video stream: %d\n", id);
 347         sh_video_t *sh = calloc(1, sizeof *sh);
 348         demuxer->v_streams[id] = sh;
 349         sh->vid = vid;
 350         sh->ds = demuxer->video;
 351         sh->opts = demuxer->opts;
 352         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_ID=%d\n", vid);
 353     }
 354     return demuxer->v_streams[id];
 355 }
 356
 357 void free_sh_video(sh_video_t *sh)
 358 {
 359     mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing sh_video at %p\n", sh);
 360     free(sh->bih);
 361 #ifdef CONFIG_LIBAVCODEC
 362     av_parser_close(sh->parser);
 363     av_freep(&sh->avctx);
 364 #endif
 365     free(sh);
 366 }
 367
 368 void free_demuxer(demuxer_t *demuxer)
 369 {
 370     int i;
 371     mp_msg(MSGT_DEMUXER, MSGL_DBG2, "DEMUXER: freeing demuxer at %p\n",
 372            demuxer);
 373     if (demuxer->desc->close)
 374         demuxer->desc->close(demuxer);
 375     // Very ugly hack to make it behave like old implementation
 376     if (demuxer->desc->type == DEMUXER_TYPE_DEMUXERS)
 377         goto skip_streamfree;
 378     // free streams:
 379     for (i = 0; i < MAX_A_STREAMS; i++)
 380         if (demuxer->a_streams[i])
 381             free_sh_audio(demuxer, i);
 382     for (i = 0; i < MAX_V_STREAMS; i++)
 383         if (demuxer->v_streams[i])
 384             free_sh_video(demuxer->v_streams[i]);
 385     for (i = 0; i < MAX_S_STREAMS; i++)
 386         if (demuxer->s_streams[i])
 387             free_sh_sub(demuxer->s_streams[i]);
 388     // free demuxers:
 389     free_demuxer_stream(demuxer->audio);
 390     free_demuxer_stream(demuxer->video);
 391     free_demuxer_stream(demuxer->sub);
 392  skip_streamfree:
 393     if (demuxer->info) {
 394         for (i = 0; demuxer->info[i] != NULL; i++)
 395             free(demuxer->info[i]);
 396         free(demuxer->info);
 397     }
 398     free(demuxer->filename);
 399     if (demuxer->teletext)
 400         teletext_control(demuxer->teletext, TV_VBI_CONTROL_STOP, NULL);
 401     talloc_free(demuxer);
 402 }
 403
 404
 405 static void ds_add_packet_internal(demux_stream_t *ds, demux_packet_t *dp)
 406 {
 407     // append packet to DS stream:
 408     ++ds->packs;
 409     ds->bytes += dp->len;
 410     if (ds->last) {
 411         // next packet in stream
 412         ds->last->next = dp;
 413         ds->last = dp;
 414     } else {
 415         // first packet in stream
 416         ds->first = ds->last = dp;
 417     }
 418     mp_dbg(MSGT_DEMUXER, MSGL_DBG2,
 419            "DEMUX: Append packet to %s, len=%d  pts=%5.3f  pos=%u  [packs: A=%d V=%d]\n",
 420            (ds == ds->demuxer->audio) ? "d_audio" : "d_video", dp->len,
 421            dp->pts, (unsigned int) dp->pos, ds->demuxer->audio->packs,
 422            ds->demuxer->video->packs);
 423 }
 424
 425 #ifdef CONFIG_LIBAVCODEC
 426 static void allocate_parser(AVCodecContext **avctx, AVCodecParserContext **parser, unsigned format)
 427 {
 428     enum CodecID codec_id = CODEC_ID_NONE;
 429     extern int avcodec_initialized;
 430     if (!avcodec_initialized) {
 431         avcodec_init();
 432         avcodec_register_all();
 433         avcodec_initialized = 1;
 434     }
 435     switch (format) {
 436     case 0x2000:
 437     case 0x332D6361:
 438     case 0x332D4341:
 439     case MKTAG('d', 'n', 'e', 't'):
 440     case MKTAG('s', 'a', 'c', '3'):
 441         codec_id = CODEC_ID_AC3;
 442         break;
 443     case MKTAG('E', 'A', 'C', '3'):
 444         codec_id = CODEC_ID_EAC3;
 445         break;
 446     case 0x2001:
 447     case 0x86:
 448         codec_id = CODEC_ID_DTS;
 449         break;
 450     case 0x55:
 451     case 0x5500736d:
 452     case MKTAG('.', 'm', 'p', '3'):
 453     case MKTAG('M', 'P', 'E', ' '):
 454     case MKTAG('L', 'A', 'M', 'E'):
 455         codec_id = CODEC_ID_MP3;
 456         break;
 457     case 0x50:
 458     case MKTAG('.', 'm', 'p', '2'):
 459     case MKTAG('.', 'm', 'p', '1'):
 460         codec_id = CODEC_ID_MP2;
 461         break;
 462     }
 463     if (codec_id != CODEC_ID_NONE) {
 464         *avctx = avcodec_alloc_context();
 465         if (!*avctx)
 466             return;
 467         *parser = av_parser_init(codec_id);
 468         if (!*parser)
 469             av_freep(avctx);
 470     }
 471 }
 472
 473 static void get_parser(sh_common_t *sh, AVCodecContext **avctx, AVCodecParserContext **parser)
 474 {
 475     *avctx  = NULL;
 476     *parser = NULL;
 477
 478     if (!sh || !sh->needs_parsing)
 479         return;
 480
 481     *avctx  = sh->avctx;
 482     *parser = sh->parser;
 483     if (*parser)
 484         return;
 485
 486     allocate_parser(avctx, parser, sh->format);
 487     sh->avctx  = *avctx;
 488     sh->parser = *parser;
 489 }
 490
 491 int ds_parse(demux_stream_t *ds, uint8_t **buffer, int *len, double pts, off_t pos)
 492 {
 493     AVCodecContext *avctx;
 494     AVCodecParserContext *parser;
 495     get_parser(ds->sh, &avctx, &parser);
 496     if (!parser)
 497         return *len;
 498     return av_parser_parse2(parser, avctx, buffer, len, *buffer, *len, pts, pts, pos);
 499 }
 500 #endif
 501
 502 void ds_add_packet(demux_stream_t *ds, demux_packet_t *dp)
 503 {
 504 #if PARSE_ON_ADD && defined(CONFIG_LIBAVCODEC)
 505     int len = dp->len;
 506     int pos = 0;
 507     while (len > 0) {
 508         uint8_t *parsed_start = dp->buffer + pos;
 509         int parsed_len = len;
 510         int consumed = ds_parse(ds->sh, &parsed_start, &parsed_len, dp->pts, dp->pos);
 511         pos += consumed;
 512         len -= consumed;
 513         if (parsed_start == dp->buffer && parsed_len == dp->len) {
 514             ds_add_packet_internal(ds, dp);
 515         } else if (parsed_len) {
 516             demux_packet_t *dp2 = new_demux_packet(parsed_len);
 517             dp2->pos = dp->pos;
 518             dp2->pts = dp->pts; // should be parser->pts but that works badly
 519             memcpy(dp2->buffer, parsed_start, parsed_len);
 520             ds_add_packet_internal(ds, dp2);
 521         }
 522     }
 523 #else
 524     ds_add_packet_internal(ds, dp);
 525 #endif
 526 }
 527
 528 void ds_read_packet(demux_stream_t *ds, stream_t *stream, int len,
 529                     double pts, off_t pos, int flags)
 530 {
 531     demux_packet_t *dp = new_demux_packet(len);
 532     len = stream_read(stream, dp->buffer, len);
 533     resize_demux_packet(dp, len);
 534     dp->pts = pts;
 535     dp->pos = pos;
 536     dp->flags = flags;
 537     // append packet to DS stream:
 538     ds_add_packet(ds, dp);
 539 }
 540
 541 // return value:
 542 //     0 = EOF or no stream found or invalid type
 543 //     1 = successfully read a packet
 544
 545 int demux_fill_buffer(demuxer_t *demux, demux_stream_t *ds)
 546 {
 547     // Note: parameter 'ds' can be NULL!
 548     return demux->desc->fill_buffer(demux, ds);
 549 }
 550
 551 // return value:
 552 //     0 = EOF
 553 //     1 = successful
 554 #define MAX_ACUMULATED_PACKETS 64
 555 int ds_fill_buffer(demux_stream_t *ds)
 556 {
 557     demuxer_t *demux = ds->demuxer;
 558     if (ds->current)
 559         free_demux_packet(ds->current);
 560     ds->current = NULL;
 561     if (mp_msg_test(MSGT_DEMUXER, MSGL_DBG3)) {
 562         if (ds == demux->audio)
 563             mp_dbg(MSGT_DEMUXER, MSGL_DBG3,
 564                    "ds_fill_buffer(d_audio) called\n");
 565         else if (ds == demux->video)
 566             mp_dbg(MSGT_DEMUXER, MSGL_DBG3,
 567                    "ds_fill_buffer(d_video) called\n");
 568         else if (ds == demux->sub)
 569             mp_dbg(MSGT_DEMUXER, MSGL_DBG3, "ds_fill_buffer(d_sub) called\n");
 570         else
 571             mp_dbg(MSGT_DEMUXER, MSGL_DBG3,
 572                    "ds_fill_buffer(unknown 0x%X) called\n", (unsigned int) ds);
 573     }
 574     while (1) {
 575         if (ds->packs) {
 576             demux_packet_t *p = ds->first;
 577 #if 0
 578             if (demux->reference_clock != MP_NOPTS_VALUE) {
 579                 if (   p->pts != MP_NOPTS_VALUE
 580                     && p->pts >  demux->reference_clock
 581                     && ds->packs < MAX_ACUMULATED_PACKETS) {
 582                     if (demux_fill_buffer(demux, ds))
 583                         continue;
 584                 }
 585             }
 586 #endif
 587             // copy useful data:
 588             ds->buffer = p->buffer;
 589             ds->buffer_pos = 0;
 590             ds->buffer_size = p->len;
 591             ds->pos = p->pos;
 592             ds->dpos += p->len; // !!!
 593             ++ds->pack_no;
 594             if (p->pts != MP_NOPTS_VALUE) {
 595                 ds->pts = p->pts;
 596                 ds->pts_bytes = 0;
 597             }
 598             ds->pts_bytes += p->len;    // !!!
 599             if (p->stream_pts != MP_NOPTS_VALUE)
 600                 demux->stream_pts = p->stream_pts;
 601             ds->flags = p->flags;
 602             // unlink packet:
 603             ds->bytes -= p->len;
 604             ds->current = p;
 605             ds->first = p->next;
 606             if (!ds->first)
 607                 ds->last = NULL;
 608             --ds->packs;
 609             /* The code below can set ds->eof to 1 when another stream runs
 610              * out of buffer space. That makes sense because in that situation
 611              * the calling code should not count on being able to demux more
 612              * packets from this stream.
 613              * If however the situation improves and we're called again
 614              * despite the eof flag then it's better to clear it to avoid
 615              * weird behavior. */
 616             ds->eof = 0;
 617             return 1;
 618         }
 619
 620 #define MaybeNI _("Maybe you are playing a non-interleaved stream/file or the codec failed?\n" \
 621                 "For AVI files, try to force non-interleaved mode with the -ni option.\n")
 622
 623         if (demux->audio->packs >= MAX_PACKS
 624             || demux->audio->bytes >= MAX_PACK_BYTES) {
 625             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many audio packets in the buffer: (%d in %d bytes).\n",
 626                    demux->audio->packs, demux->audio->bytes);
 627             mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
 628             break;
 629         }
 630         if (demux->video->packs >= MAX_PACKS
 631             || demux->video->bytes >= MAX_PACK_BYTES) {
 632             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many video packets in the buffer: (%d in %d bytes).\n",
 633                    demux->video->packs, demux->video->bytes);
 634             mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
 635             break;
 636         }
 637         if (!demux_fill_buffer(demux, ds)) {
 638 #if PARSE_ON_ADD && defined(CONFIG_LIBAVCODEC)
 639             uint8_t *parsed_start = NULL;
 640             int parsed_len = 0;
 641             ds_parse(ds->sh, &parsed_start, &parsed_len, MP_NOPTS_VALUE, 0);
 642             if (parsed_len) {
 643                 demux_packet_t *dp2 = new_demux_packet(parsed_len);
 644                 dp2->pts = MP_NOPTS_VALUE;
 645                 memcpy(dp2->buffer, parsed_start, parsed_len);
 646                 ds_add_packet_internal(ds, dp2);
 647                 continue;
 648             }
 649 #endif
 650             mp_dbg(MSGT_DEMUXER, MSGL_DBG2,
 651                    "ds_fill_buffer()->demux_fill_buffer() failed\n");
 652             break; // EOF
 653         }
 654     }
 655     ds->buffer_pos = ds->buffer_size = 0;
 656     ds->buffer = NULL;
 657     mp_msg(MSGT_DEMUXER, MSGL_V,
 658            "ds_fill_buffer: EOF reached (stream: %s)  \n",
 659            ds == demux->audio ? "audio" : "video");
 660     ds->eof = 1;
 661     return 0;
 662 }
 663
 664 int demux_read_data(demux_stream_t *ds, unsigned char *mem, int len)
 665 {
 666     int x;
 667     int bytes = 0;
 668     while (len > 0) {
 669         x = ds->buffer_size - ds->buffer_pos;
 670         if (x == 0) {
 671             if (!ds_fill_buffer(ds))
 672                 return bytes;
 673         } else {
 674             if (x > len)
 675                 x = len;
 676             if (mem)
 677                 fast_memcpy(mem + bytes, &ds->buffer[ds->buffer_pos], x);
 678             bytes += x;
 679             len -= x;
 680             ds->buffer_pos += x;
 681         }
 682     }
 683     return bytes;
 684 }
 685
 686 /**
 687  * \brief read data until the given 3-byte pattern is encountered, up to maxlen
 688  * \param mem memory to read data into, may be NULL to discard data
 689  * \param maxlen maximum number of bytes to read
 690  * \param read number of bytes actually read
 691  * \param pattern pattern to search for (lowest 8 bits are ignored)
 692  * \return whether pattern was found
 693  */
 694 int demux_pattern_3(demux_stream_t *ds, unsigned char *mem, int maxlen,
 695                     int *read, uint32_t pattern)
 696 {
 697     register uint32_t head = 0xffffff00;
 698     register uint32_t pat = pattern & 0xffffff00;
 699     int total_len = 0;
 700     do {
 701         register unsigned char *ds_buf = &ds->buffer[ds->buffer_size];
 702         int len = ds->buffer_size - ds->buffer_pos;
 703         register long pos = -len;
 704         if (unlikely(pos >= 0)) { // buffer is empty
 705             ds_fill_buffer(ds);
 706             continue;
 707         }
 708         do {
 709             head |= ds_buf[pos];
 710             head <<= 8;
 711         } while (++pos && head != pat);
 712         len += pos;
 713         if (total_len + len > maxlen)
 714             len = maxlen - total_len;
 715         len = demux_read_data(ds, mem ? &mem[total_len] : NULL, len);
 716         total_len += len;
 717     } while ((head != pat || total_len < 3) && total_len < maxlen && !ds->eof);
 718     if (read)
 719         *read = total_len;
 720     return total_len >= 3 && head == pat;
 721 }
 722
 723 void ds_free_packs(demux_stream_t *ds)
 724 {
 725     demux_packet_t *dp = ds->first;
 726     while (dp) {
 727         demux_packet_t *dn = dp->next;
 728         free_demux_packet(dp);
 729         dp = dn;
 730     }
 731     if (ds->asf_packet) {
 732         // free unfinished .asf fragments:
 733         free(ds->asf_packet->buffer);
 734         free(ds->asf_packet);
 735         ds->asf_packet = NULL;
 736     }
 737     ds->first = ds->last = NULL;
 738     ds->packs = 0; // !!!!!
 739     ds->bytes = 0;
 740     if (ds->current)
 741         free_demux_packet(ds->current);
 742     ds->current = NULL;
 743     ds->buffer = NULL;
 744     ds->buffer_pos = ds->buffer_size;
 745     ds->pts = 0;
 746     ds->pts_bytes = 0;
 747 }
 748
 749 int ds_get_packet(demux_stream_t *ds, unsigned char **start)
 750 {
 751     int len;
 752     if (ds->buffer_pos >= ds->buffer_size) {
 753         if (!ds_fill_buffer(ds)) {
 754             // EOF
 755             *start = NULL;
 756             return -1;
 757         }
 758     }
 759     len = ds->buffer_size - ds->buffer_pos;
 760     *start = &ds->buffer[ds->buffer_pos];
 761     ds->buffer_pos += len;
 762     return len;
 763 }
 764
 765 int ds_get_packet_pts(demux_stream_t *ds, unsigned char **start, double *pts)
 766 {
 767     int len;
 768     *pts = MP_NOPTS_VALUE;
 769     len = ds_get_packet(ds, start);
 770     if (len < 0)
 771         return len;
 772     // Return pts unless this read starts from the middle of a packet
 773     if (len == ds->buffer_pos)
 774         *pts = ds->current->pts;
 775     return len;
 776 }
 777
 778 int ds_get_packet_sub(demux_stream_t *ds, unsigned char **start)
 779 {
 780     int len;
 781     if (ds->buffer_pos >= ds->buffer_size) {
 782         *start = NULL;
 783         if (!ds->packs)
 784             return -1;  // no sub
 785         if (!ds_fill_buffer(ds))
 786             return -1;  // EOF
 787     }
 788     len = ds->buffer_size - ds->buffer_pos;
 789     *start = &ds->buffer[ds->buffer_pos];
 790     ds->buffer_pos += len;
 791     return len;
 792 }
 793
 794 double ds_get_next_pts(demux_stream_t *ds)
 795 {
 796     demuxer_t *demux = ds->demuxer;
 797     while (!ds->first) {
 798         if (demux->audio->packs >= MAX_PACKS
 799             || demux->audio->bytes >= MAX_PACK_BYTES) {
 800             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many audio packets in the buffer: (%d in %d bytes).\n",
 801                    demux->audio->packs, demux->audio->bytes);
 802             mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
 803             return MP_NOPTS_VALUE;
 804         }
 805         if (demux->video->packs >= MAX_PACKS
 806             || demux->video->bytes >= MAX_PACK_BYTES) {
 807             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "\nToo many video packets in the buffer: (%d in %d bytes).\n",
 808                    demux->video->packs, demux->video->bytes);
 809             mp_tmsg(MSGT_DEMUXER, MSGL_HINT, MaybeNI);
 810             return MP_NOPTS_VALUE;
 811         }
 812         if (!demux_fill_buffer(demux, ds))
 813             return MP_NOPTS_VALUE;
 814     }
 815     return ds->first->pts;
 816 }
 817
 818 // ====================================================================
 819
 820 void demuxer_help(void)
 821 {
 822     int i;
 823
 824     mp_msg(MSGT_DEMUXER, MSGL_INFO, "Available demuxers:\n");
 825     mp_msg(MSGT_DEMUXER, MSGL_INFO, " demuxer:  type  info:  (comment)\n");
 826     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_DEMUXERS\n");
 827     for (i = 0; demuxer_list[i]; i++) {
 828         if (demuxer_list[i]->type > DEMUXER_TYPE_MAX)   // Don't display special demuxers
 829             continue;
 830         if (demuxer_list[i]->comment && strlen(demuxer_list[i]->comment))
 831             mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s  %2d   %s (%s)\n",
 832                    demuxer_list[i]->name, demuxer_list[i]->type,
 833                    demuxer_list[i]->info, demuxer_list[i]->comment);
 834         else
 835             mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s  %2d   %s\n",
 836                    demuxer_list[i]->name, demuxer_list[i]->type,
 837                    demuxer_list[i]->info);
 838     }
 839 }
 840
 841
 842 /**
 843  * Get demuxer type for a given demuxer name
 844  *
 845  * @param demuxer_name    string with demuxer name of demuxer number
 846  * @param force           will be set if demuxer should be forced.
 847  *                        May be NULL.
 848  * @return                DEMUXER_TYPE_xxx, -1 if error or not found
 849  */
 850 int get_demuxer_type_from_name(char *demuxer_name, int *force)
 851 {
 852     int i;
 853     long type_int;
 854     char *endptr;
 855
 856     if (!demuxer_name || !demuxer_name[0])
 857         return DEMUXER_TYPE_UNKNOWN;
 858     if (force)
 859         *force = demuxer_name[0] == '+';
 860     if (demuxer_name[0] == '+')
 861         demuxer_name = &demuxer_name[1];
 862     for (i = 0; demuxer_list[i]; i++) {
 863         if (demuxer_list[i]->type > DEMUXER_TYPE_MAX)   // Can't select special demuxers from commandline
 864             continue;
 865         if (strcmp(demuxer_name, demuxer_list[i]->name) == 0)
 866             return demuxer_list[i]->type;
 867     }
 868
 869     // No match found, try to parse name as an integer (demuxer number)
 870     type_int = strtol(demuxer_name, &endptr, 0);
 871     if (*endptr)  // Conversion failed
 872         return -1;
 873     if ((type_int > 0) && (type_int <= DEMUXER_TYPE_MAX))
 874         return (int) type_int;
 875
 876     return -1;
 877 }
 878
 879 int extension_parsing = 1; // 0=off 1=mixed (used only for unstable formats)
 880
 881 /*
 882   NOTE : Several demuxers may be opened at the same time so
 883   demuxers should NEVER rely on an external var to enable them
 884   self. If a demuxer can't do any auto-detection it should only use
 885   file_format. The user can explicitly set file_format with the -demuxer
 886   option so there is really no need for another extra var.
 887   For convenience an option can be added to set file_format directly
 888   to the right type (ex: rawaudio,rawvideo).
 889   Also the stream can override the file_format so a demuxer which rely
 890   on a special stream type can set file_format at the stream level
 891   (ex: tv,mf).
 892 */
 893
 894 static demuxer_t *demux_open_stream(struct MPOpts *opts, stream_t *stream,
 895                                     int file_format, int force, int audio_id,
 896                                     int video_id, int dvdsub_id,
 897                                     char *filename)
 898 {
 899     demuxer_t *demuxer = NULL;
 900
 901     sh_video_t *sh_video = NULL;
 902
 903     const demuxer_desc_t *demuxer_desc;
 904     int fformat = 0;
 905     int i;
 906
 907     // If somebody requested a demuxer check it
 908     if (file_format) {
 909         if ((demuxer_desc = get_demuxer_desc_from_type(file_format))) {
 910             demuxer = new_demuxer(opts, stream, demuxer_desc->type, audio_id,
 911                                   video_id, dvdsub_id, filename);
 912             if (demuxer_desc->check_file)
 913                 fformat = demuxer_desc->check_file(demuxer);
 914             if (force || !demuxer_desc->check_file)
 915                 fformat = demuxer_desc->type;
 916             if (fformat != 0) {
 917                 if (fformat == demuxer_desc->type) {
 918                     demuxer_t *demux2 = demuxer;
 919                     // Move messages to demuxer detection code?
 920                     mp_tmsg(MSGT_DEMUXER, MSGL_INFO,
 921                            "%s file format detected.\n",
 922                            demuxer_desc->shortdesc);
 923                     file_format = fformat;
 924                     if (!demuxer->desc->open
 925                         || (demux2 = demuxer->desc->open(demuxer))) {
 926                         demuxer = demux2;
 927                         goto dmx_open;
 928                     }
 929                 } else {
 930                     // Format changed after check, recurse
 931                     free_demuxer(demuxer);
 932                     return demux_open_stream(opts, stream, fformat, force,
 933                                              audio_id, video_id, dvdsub_id,
 934                                              filename);
 935                 }
 936             }
 937             // Check failed for forced demuxer, quit
 938             free_demuxer(demuxer);
 939             return NULL;
 940         }
 941     }
 942     // Test demuxers with safe file checks
 943     for (i = 0; (demuxer_desc = demuxer_list[i]); i++) {
 944         if (demuxer_desc->safe_check) {
 945             demuxer = new_demuxer(opts, stream, demuxer_desc->type, audio_id,
 946                                   video_id, dvdsub_id, filename);
 947             if ((fformat = demuxer_desc->check_file(demuxer)) != 0) {
 948                 if (fformat == demuxer_desc->type) {
 949                     demuxer_t *demux2 = demuxer;
 950                     mp_tmsg(MSGT_DEMUXER, MSGL_INFO,
 951                            "%s file format detected.\n",
 952                            demuxer_desc->shortdesc);
 953                     file_format = fformat;
 954                     if (!demuxer->desc->open
 955                         || (demux2 = demuxer->desc->open(demuxer))) {
 956                         demuxer = demux2;
 957                         goto dmx_open;
 958                     }
 959                 } else {
 960                     if (fformat == DEMUXER_TYPE_PLAYLIST)
 961                         return demuxer; // handled in mplayer.c
 962                     // Format changed after check, recurse
 963                     free_demuxer(demuxer);
 964                     demuxer = demux_open_stream(opts, stream, fformat, force,
 965                                                 audio_id, video_id,
 966                                                 dvdsub_id, filename);
 967                     if (demuxer)
 968                         return demuxer; // done!
 969                     file_format = DEMUXER_TYPE_UNKNOWN;
 970                 }
 971             }
 972             free_demuxer(demuxer);
 973             demuxer = NULL;
 974         }
 975     }
 976
 977     // If no forced demuxer perform file extension based detection
 978     // Ok. We're over the stable detectable fileformats, the next ones are
 979     // a bit fuzzy. So by default (extension_parsing==1) try extension-based
 980     // detection first:
 981     if (file_format == DEMUXER_TYPE_UNKNOWN && filename
 982         && extension_parsing == 1) {
 983         file_format = demuxer_type_by_filename(filename);
 984         if (file_format != DEMUXER_TYPE_UNKNOWN) {
 985             // we like recursion :)
 986             demuxer = demux_open_stream(opts, stream, file_format, force,
 987                                         audio_id, video_id, dvdsub_id,
 988                                         filename);
 989             if (demuxer)
 990                 return demuxer; // done!
 991             file_format = DEMUXER_TYPE_UNKNOWN; // continue fuzzy guessing...
 992             mp_msg(MSGT_DEMUXER, MSGL_V,
 993                    "demuxer: continue fuzzy content-based format guessing...\n");
 994         }
 995     }
 996     // Try detection for all other demuxers
 997     for (i = 0; (demuxer_desc = demuxer_list[i]); i++) {
 998         if (!demuxer_desc->safe_check && demuxer_desc->check_file) {
 999             demuxer = new_demuxer(opts, stream, demuxer_desc->type, audio_id,
1000                                   video_id, dvdsub_id, filename);
1001             if ((fformat = demuxer_desc->check_file(demuxer)) != 0) {
1002                 if (fformat == demuxer_desc->type) {
1003                     demuxer_t *demux2 = demuxer;
1004                     mp_tmsg(MSGT_DEMUXER, MSGL_INFO,
1005                            "%s file format detected.\n",
1006                            demuxer_desc->shortdesc);
1007                     file_format = fformat;
1008                     if (!demuxer->desc->open
1009                         || (demux2 = demuxer->desc->open(demuxer))) {
1010                         demuxer = demux2;
1011                         goto dmx_open;
1012                     }
1013                 } else {
1014                     if (fformat == DEMUXER_TYPE_PLAYLIST)
1015                         return demuxer; // handled in mplayer.c
1016                     // Format changed after check, recurse
1017                     free_demuxer(demuxer);
1018                     demuxer = demux_open_stream(opts, stream, fformat, force,
1019                                                 audio_id, video_id,
1020                                                 dvdsub_id, filename);
1021                     if (demuxer)
1022                         return demuxer; // done!
1023                     file_format = DEMUXER_TYPE_UNKNOWN;
1024                 }
1025             }
1026             free_demuxer(demuxer);
1027             demuxer = NULL;
1028         }
1029     }
1030
1031     return NULL;
1032     //====== File format recognized, set up these for compatibility: =========
1033  dmx_open:
1034
1035     demuxer->file_format = file_format;
1036
1037     if ((sh_video = demuxer->video->sh) && sh_video->bih) {
1038         int biComp = le2me_32(sh_video->bih->biCompression);
1039         mp_msg(MSGT_DEMUX, MSGL_INFO,
1040                "VIDEO:  [%.4s]  %dx%d  %dbpp  %5.3f fps  %5.1f kbps (%4.1f kbyte/s)\n",
1041                (char *) &biComp, sh_video->bih->biWidth,
1042                sh_video->bih->biHeight, sh_video->bih->biBitCount,
1043                sh_video->fps, sh_video->i_bps * 0.008f,
1044                sh_video->i_bps / 1024.0f);
1045     }
1046 #ifdef CONFIG_ASS
1047     if (opts->ass_enabled && ass_library) {
1048         for (i = 0; i < MAX_S_STREAMS; ++i) {
1049             sh_sub_t *sh = demuxer->s_streams[i];
1050             if (sh && sh->type == 'a') {
1051                 sh->ass_track = ass_new_track(ass_library);
1052                 if (sh->ass_track && sh->extradata)
1053                     ass_process_codec_private(sh->ass_track, sh->extradata,
1054                                               sh->extradata_len);
1055             } else if (sh && sh->type != 'v')
1056                 sh->ass_track = ass_default_track(ass_library);
1057         }
1058     }
1059 #endif
1060     return demuxer;
1061 }
1062
1063 char *audio_stream = NULL;
1064 char *sub_stream = NULL;
1065 int audio_stream_cache = 0;
1066
1067 char *demuxer_name = NULL;       // parameter from -demuxer
1068 char *audio_demuxer_name = NULL; // parameter from -audio-demuxer
1069 char *sub_demuxer_name = NULL;   // parameter from -sub-demuxer
1070
1071 extern int hr_mp3_seek;
1072
1073 extern float stream_cache_min_percent;
1074 extern float stream_cache_seek_min_percent;
1075
1076 demuxer_t *demux_open(struct MPOpts *opts, stream_t *vs, int file_format,
1077                       int audio_id, int video_id, int dvdsub_id,
1078                       char *filename)
1079 {
1080     stream_t *as = NULL, *ss = NULL;
1081     demuxer_t *vd, *ad = NULL, *sd = NULL;
1082     demuxer_t *res;
1083     int afmt = DEMUXER_TYPE_UNKNOWN, sfmt = DEMUXER_TYPE_UNKNOWN;
1084     int demuxer_type;
1085     int audio_demuxer_type = 0, sub_demuxer_type = 0;
1086     int demuxer_force = 0, audio_demuxer_force = 0, sub_demuxer_force = 0;
1087
1088     if ((demuxer_type =
1089          get_demuxer_type_from_name(demuxer_name, &demuxer_force)) < 0) {
1090         mp_msg(MSGT_DEMUXER, MSGL_ERR, "-demuxer %s does not exist.\n",
1091                demuxer_name);
1092     }
1093     if ((audio_demuxer_type =
1094          get_demuxer_type_from_name(audio_demuxer_name,
1095                                     &audio_demuxer_force)) < 0) {
1096         mp_msg(MSGT_DEMUXER, MSGL_ERR, "-audio-demuxer %s does not exist.\n",
1097                audio_demuxer_name);
1098     }
1099     if ((sub_demuxer_type =
1100          get_demuxer_type_from_name(sub_demuxer_name,
1101                                     &sub_demuxer_force)) < 0) {
1102         mp_msg(MSGT_DEMUXER, MSGL_ERR, "-sub-demuxer %s does not exist.\n",
1103                sub_demuxer_name);
1104     }
1105
1106     if (audio_stream) {
1107         as = open_stream(audio_stream, 0, &afmt);
1108         if (!as) {
1109             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Cannot open audio stream: %s\n",
1110                    audio_stream);
1111             return NULL;
1112         }
1113         if (audio_stream_cache) {
1114             if (!stream_enable_cache
1115                 (as, audio_stream_cache * 1024,
1116                  audio_stream_cache * 1024 * (stream_cache_min_percent /
1117                                               100.0),
1118                  audio_stream_cache * 1024 * (stream_cache_seek_min_percent /
1119                                               100.0))) {
1120                 free_stream(as);
1121                 mp_msg(MSGT_DEMUXER, MSGL_ERR,
1122                        "Can't enable audio stream cache\n");
1123                 return NULL;
1124             }
1125         }
1126     }
1127     if (sub_stream) {
1128         ss = open_stream(sub_stream, 0, &sfmt);
1129         if (!ss) {
1130             mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Cannot open subtitle stream: %s\n",
1131                    sub_stream);
1132             return NULL;
1133         }
1134     }
1135
1136     vd = demux_open_stream(opts, vs, demuxer_type ? demuxer_type : file_format,
1137                            demuxer_force, audio_stream ? -2 : audio_id,
1138                            video_id, sub_stream ? -2 : dvdsub_id, filename);
1139     if (!vd) {
1140         if (as)
1141             free_stream(as);
1142         if (ss)
1143             free_stream(ss);
1144         return NULL;
1145     }
1146     if (as) {
1147         ad = demux_open_stream(opts, as,
1148                                audio_demuxer_type ? audio_demuxer_type : afmt,
1149                                audio_demuxer_force, audio_id, -2, -2,
1150                                audio_stream);
1151         if (!ad) {
1152             mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "Failed to open audio demuxer: %s\n",
1153                    audio_stream);
1154             free_stream(as);
1155         } else if (ad->audio->sh
1156                    && ((sh_audio_t *) ad->audio->sh)->format == 0x55) // MP3
1157             hr_mp3_seek = 1;    // Enable high res seeking
1158     }
1159     if (ss) {
1160         sd = demux_open_stream(opts, ss,
1161                                sub_demuxer_type ? sub_demuxer_type : sfmt,
1162                                sub_demuxer_force, -2, -2, dvdsub_id,
1163                                sub_stream);
1164         if (!sd) {
1165             mp_tmsg(MSGT_DEMUXER, MSGL_WARN,
1166                    "Failed to open subtitle demuxer: %s\n", sub_stream);
1167             free_stream(ss);
1168         }
1169     }
1170
1171     if (ad && sd)
1172         res = new_demuxers_demuxer(vd, ad, sd);
1173     else if (ad)
1174         res = new_demuxers_demuxer(vd, ad, vd);
1175     else if (sd)
1176         res = new_demuxers_demuxer(vd, vd, sd);
1177     else
1178         res = vd;
1179
1180     opts->correct_pts = opts->user_correct_pts;
1181     if (opts->correct_pts < 0)
1182         opts->correct_pts =
1183             demux_control(res, DEMUXER_CTRL_CORRECT_PTS,
1184                           NULL) == DEMUXER_CTRL_OK;
1185     return res;
1186 }
1187
1188
1189 void demux_flush(demuxer_t *demuxer)
1190 {
1191     ds_free_packs(demuxer->video);
1192     ds_free_packs(demuxer->audio);
1193     ds_free_packs(demuxer->sub);
1194 }
1195
1196 int demux_seek(demuxer_t *demuxer, float rel_seek_secs, float audio_delay,
1197                int flags)
1198 {
1199     demux_stream_t *d_audio = demuxer->audio;
1200     demux_stream_t *d_video = demuxer->video;
1201     sh_audio_t *sh_audio = d_audio->sh;
1202     sh_video_t *sh_video = d_video->sh;
1203     double tmp = 0;
1204     double pts;
1205
1206     if (!demuxer->seekable) {
1207         if (demuxer->file_format == DEMUXER_TYPE_AVI)
1208             mp_tmsg(MSGT_SEEK, MSGL_WARN, "Cannot seek in raw AVI streams. (Index required, try with the -idx switch.)\n");
1209 #ifdef CONFIG_TV
1210         else if (demuxer->file_format == DEMUXER_TYPE_TV)
1211             mp_tmsg(MSGT_SEEK, MSGL_WARN, "TV input is not seekable! (Seeking will probably be for changing channels ;)\n");
1212 #endif
1213         else
1214             mp_tmsg(MSGT_SEEK, MSGL_WARN, "Cannot seek in this file.\n");
1215         return 0;
1216     }
1217     // clear demux buffers:
1218     demux_flush(demuxer);
1219     if (sh_audio)
1220         sh_audio->a_buffer_len = 0;
1221
1222     demuxer->stream->eof = 0;
1223     demuxer->video->eof = 0;
1224     demuxer->audio->eof = 0;
1225
1226     if (sh_video)
1227         sh_video->timer = 0;    // !!!!!!
1228
1229     if (flags & SEEK_ABSOLUTE)
1230         pts = 0.0f;
1231     else {
1232         if (demuxer->stream_pts == MP_NOPTS_VALUE)
1233             goto dmx_seek;
1234         pts = demuxer->stream_pts;
1235     }
1236
1237     if (flags & SEEK_FACTOR) {
1238         if (stream_control(demuxer->stream, STREAM_CTRL_GET_TIME_LENGTH, &tmp)
1239             == STREAM_UNSUPPORTED)
1240             goto dmx_seek;
1241         pts += tmp * rel_seek_secs;
1242     } else
1243         pts += rel_seek_secs;
1244
1245     if (stream_control(demuxer->stream, STREAM_CTRL_SEEK_TO_TIME, &pts) !=
1246         STREAM_UNSUPPORTED) {
1247         demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
1248         return 1;
1249     }
1250
1251   dmx_seek:
1252     if (demuxer->desc->seek)
1253         demuxer->desc->seek(demuxer, rel_seek_secs, audio_delay, flags);
1254
1255     if (sh_audio)
1256         resync_audio_stream(sh_audio);
1257
1258     return 1;
1259 }
1260
1261 int demux_info_add(demuxer_t *demuxer, const char *opt, const char *param)
1262 {
1263     char **info = demuxer->info;
1264     int n = 0;
1265
1266
1267     for (n = 0; info && info[2 * n] != NULL; n++) {
1268         if (!strcasecmp(opt, info[2 * n])) {
1269             if (!strcmp(param, info[2 * n + 1])) {
1270                 mp_msg(MSGT_DEMUX, MSGL_V, "Demuxer info %s set to unchanged value %s\n", opt, param);
1271                 return 0;
1272             }
1273             mp_tmsg(MSGT_DEMUX, MSGL_INFO, "Demuxer info %s changed to %s\n", opt,
1274                    param);
1275             free(info[2 * n + 1]);
1276             info[2 * n + 1] = strdup(param);
1277             return 0;
1278         }
1279     }
1280
1281     info = demuxer->info =
1282         (char **) realloc(info, (2 * (n + 2)) * sizeof(char *));
1283     info[2 * n] = strdup(opt);
1284     info[2 * n + 1] = strdup(param);
1285     memset(&info[2 * (n + 1)], 0, 2 * sizeof(char *));
1286
1287     return 1;
1288 }
1289
1290 int demux_info_print(demuxer_t *demuxer)
1291 {
1292     char **info = demuxer->info;
1293     int n;
1294
1295     if (!info)
1296         return 0;
1297
1298     mp_tmsg(MSGT_DEMUX, MSGL_INFO, "Clip info:\n");
1299     for (n = 0; info[2 * n] != NULL; n++) {
1300         mp_msg(MSGT_DEMUX, MSGL_INFO, " %s: %s\n", info[2 * n],
1301                info[2 * n + 1]);
1302         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_NAME%d=%s\n", n,
1303                info[2 * n]);
1304         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_VALUE%d=%s\n", n,
1305                info[2 * n + 1]);
1306     }
1307     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_N=%d\n", n);
1308
1309     return 0;
1310 }
1311
1312 char *demux_info_get(demuxer_t *demuxer, const char *opt)
1313 {
1314     int i;
1315     char **info = demuxer->info;
1316
1317     for (i = 0; info && info[2 * i] != NULL; i++) {
1318         if (!strcasecmp(opt, info[2 * i]))
1319             return info[2 * i + 1];
1320     }
1321
1322     return NULL;
1323 }
1324
1325 int demux_control(demuxer_t *demuxer, int cmd, void *arg)
1326 {
1327
1328     if (demuxer->desc->control)
1329         return demuxer->desc->control(demuxer, cmd, arg);
1330
1331     return DEMUXER_CTRL_NOTIMPL;
1332 }
1333
1334
1335
1336 double demuxer_get_time_length(demuxer_t *demuxer)
1337 {
1338     double get_time_ans;
1339     sh_video_t *sh_video = demuxer->video->sh;
1340     sh_audio_t *sh_audio = demuxer->audio->sh;
1341     // <= 0 means DEMUXER_CTRL_NOTIMPL or DEMUXER_CTRL_DONTKNOW
1342     if (demux_control
1343         (demuxer, DEMUXER_CTRL_GET_TIME_LENGTH, (void *) &get_time_ans) <= 0) {
1344         if (sh_video && sh_video->i_bps && sh_audio && sh_audio->i_bps)
1345             get_time_ans = (double) (demuxer->movi_end -
1346                                      demuxer->movi_start) / (sh_video->i_bps +
1347                                                              sh_audio->i_bps);
1348         else if (sh_video && sh_video->i_bps)
1349             get_time_ans = (double) (demuxer->movi_end -
1350                                      demuxer->movi_start) / sh_video->i_bps;
1351         else if (sh_audio && sh_audio->i_bps)
1352             get_time_ans = (double) (demuxer->movi_end -
1353                                      demuxer->movi_start) / sh_audio->i_bps;
1354         else
1355             get_time_ans = 0;
1356     }
1357     return get_time_ans;
1358 }
1359
1360 /**
1361  * \brief demuxer_get_current_time() returns the time of the current play in three possible ways:
1362  *        either when the stream reader satisfies STREAM_CTRL_GET_CURRENT_TIME (e.g. dvd)
1363  *        or using sh_video->pts when the former method fails
1364  *        0 otherwise
1365  * \return the current play time
1366  */
1367 int demuxer_get_current_time(demuxer_t *demuxer)
1368 {
1369     double get_time_ans = 0;
1370     sh_video_t *sh_video = demuxer->video->sh;
1371     if (demuxer->stream_pts != MP_NOPTS_VALUE)
1372         get_time_ans = demuxer->stream_pts;
1373     else if (sh_video)
1374         get_time_ans = sh_video->pts;
1375     return (int) get_time_ans;
1376 }
1377
1378 int demuxer_get_percent_pos(demuxer_t *demuxer)
1379 {
1380     int ans = 0;
1381     int res = demux_control(demuxer, DEMUXER_CTRL_GET_PERCENT_POS, &ans);
1382     int len = (demuxer->movi_end - demuxer->movi_start) / 100;
1383     if (res <= 0) {
1384         off_t pos = demuxer->filepos > 0 ? demuxer->filepos : stream_tell(demuxer->stream);
1385         if (len > 0)
1386             ans = (pos - demuxer->movi_start) / len;
1387         else
1388             ans = 0;
1389     }
1390     if (ans < 0)
1391         ans = 0;
1392     if (ans > 100)
1393         ans = 100;
1394     return ans;
1395 }
1396
1397 int demuxer_switch_audio(demuxer_t *demuxer, int index)
1398 {
1399     int res = demux_control(demuxer, DEMUXER_CTRL_SWITCH_AUDIO, &index);
1400     if (res == DEMUXER_CTRL_NOTIMPL)
1401         index = demuxer->audio->id;
1402     if (demuxer->audio->id >= 0)
1403         demuxer->audio->sh = demuxer->a_streams[demuxer->audio->id];
1404     else
1405         demuxer->audio->sh = NULL;
1406     return index;
1407 }
1408
1409 int demuxer_switch_video(demuxer_t *demuxer, int index)
1410 {
1411     int res = demux_control(demuxer, DEMUXER_CTRL_SWITCH_VIDEO, &index);
1412     if (res == DEMUXER_CTRL_NOTIMPL)
1413         index = demuxer->video->id;
1414     if (demuxer->video->id >= 0)
1415         demuxer->video->sh = demuxer->v_streams[demuxer->video->id];
1416     else
1417         demuxer->video->sh = NULL;
1418     return index;
1419 }
1420
1421 int demuxer_add_attachment(demuxer_t *demuxer, const char *name,
1422                            int name_maxlen, const char *type, int type_maxlen,
1423                            const void *data, size_t size)
1424 {
1425     if (!(demuxer->num_attachments % 32))
1426         demuxer->attachments = talloc_realloc(demuxer, demuxer->attachments,
1427                                               struct demux_attachment,
1428                                               demuxer->num_attachments + 32);
1429
1430     struct demux_attachment *att =
1431         demuxer->attachments + demuxer->num_attachments;
1432     att->name = talloc_strndup(demuxer->attachments, name, name_maxlen);
1433     att->type = talloc_strndup(demuxer->attachments, type, type_maxlen);
1434     att->data = talloc_size(demuxer->attachments, size);
1435     memcpy(att->data, data, size);
1436     att->data_size = size;
1437
1438     return demuxer->num_attachments++;
1439 }
1440
1441 int demuxer_add_chapter(demuxer_t *demuxer, const char *name, int name_maxlen,
1442                         uint64_t start, uint64_t end)
1443 {
1444     if (!(demuxer->num_chapters % 32))
1445         demuxer->chapters = talloc_realloc(demuxer, demuxer->chapters,
1446                                            struct demux_chapter,
1447                                            demuxer->num_chapters + 32);
1448
1449     demuxer->chapters[demuxer->num_chapters].start = start;
1450     demuxer->chapters[demuxer->num_chapters].end = end;
1451     demuxer->chapters[demuxer->num_chapters].name = name ?
1452         talloc_strndup(demuxer->chapters, name, name_maxlen) :
1453         talloc_strdup(demuxer->chapters, mp_gtext("unknown"));
1454
1455     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_ID=%d\n", demuxer->num_chapters);
1456     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_START=%"PRIu64"\n", demuxer->num_chapters, start);
1457     if (end)
1458         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_END=%"PRIu64"\n", demuxer->num_chapters, end);
1459     if (name)
1460         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_NAME=%.*s\n", demuxer->num_chapters, name_maxlen, name);
1461
1462     return demuxer->num_chapters++;
1463 }
1464
1465 /**
1466  * \brief demuxer_seek_chapter() seeks to a chapter in two possible ways:
1467  *        either using the demuxer->chapters structure set by the demuxer
1468  *        or asking help to the stream layer (e.g. dvd)
1469  * \param chapter - chapter number wished - 0-based
1470  * \param seek_pts set by the function to the pts to seek to (if demuxer->chapters is set)
1471  * \param chapter_name name of chapter found (set by this function is param is not null)
1472  * \return -1 on error, current chapter if successful
1473  */
1474
1475 int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, double *seek_pts,
1476                          char **chapter_name)
1477 {
1478     int ris;
1479     sh_video_t *sh_video = demuxer->video->sh;
1480     sh_audio_t *sh_audio = demuxer->audio->sh;
1481
1482     if (!demuxer->num_chapters || !demuxer->chapters) {
1483         demux_flush(demuxer);
1484
1485         ris = stream_control(demuxer->stream, STREAM_CTRL_SEEK_TO_CHAPTER,
1486                              &chapter);
1487         if (ris != STREAM_UNSUPPORTED)
1488             demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
1489         if (sh_video) {
1490             ds_fill_buffer(demuxer->video);
1491             resync_video_stream(sh_video);
1492         }
1493
1494         if (sh_audio) {
1495             ds_fill_buffer(demuxer->audio);
1496             resync_audio_stream(sh_audio);
1497         }
1498         // exit status may be ok, but main() doesn't have to seek itself
1499         // (because e.g. dvds depend on sectors, not on pts)
1500         *seek_pts = -1.0;
1501
1502         if (chapter_name) {
1503             *chapter_name = NULL;
1504             int num_chapters;
1505             if (stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_CHAPTERS,
1506                                &num_chapters) == STREAM_UNSUPPORTED)
1507                 num_chapters = 0;
1508             if (num_chapters) {
1509                 *chapter_name = talloc_size(NULL, 16);
1510                 sprintf(*chapter_name, " of %3d", num_chapters);
1511             }
1512         }
1513
1514         return ris != STREAM_UNSUPPORTED ? chapter : -1;
1515     } else {  // chapters structure is set in the demuxer
1516         if (chapter >= demuxer->num_chapters)
1517             return -1;
1518         if (chapter < 0)
1519             chapter = 0;
1520
1521         *seek_pts = demuxer->chapters[chapter].start / 1000.0;
1522
1523         if (chapter_name)
1524             *chapter_name = talloc_strdup(NULL, demuxer->chapters[chapter].name);
1525
1526         return chapter;
1527     }
1528 }
1529
1530 int demuxer_get_current_chapter(demuxer_t *demuxer)
1531 {
1532     int chapter = -1;
1533     if (!demuxer->num_chapters || !demuxer->chapters) {
1534         if (stream_control(demuxer->stream, STREAM_CTRL_GET_CURRENT_CHAPTER,
1535                            &chapter) == STREAM_UNSUPPORTED)
1536             chapter = -1;
1537     } else {
1538         sh_video_t *sh_video = demuxer->video->sh;
1539         sh_audio_t *sh_audio = demuxer->audio->sh;
1540         uint64_t now;
1541         now = (sh_video ? sh_video->pts : (sh_audio ? sh_audio->pts : 0))
1542               * 1000 + 0.5;
1543         for (chapter = demuxer->num_chapters - 1; chapter >= 0; --chapter) {
1544             if (demuxer->chapters[chapter].start <= now)
1545                 break;
1546         }
1547     }
1548     return chapter;
1549 }
1550
1551 char *demuxer_chapter_name(demuxer_t *demuxer, int chapter)
1552 {
1553     if (demuxer->num_chapters && demuxer->chapters) {
1554         if (chapter >= 0 && chapter < demuxer->num_chapters
1555             && demuxer->chapters[chapter].name)
1556             return strdup(demuxer->chapters[chapter].name);
1557     }
1558     return NULL;
1559 }
1560
1561 char *demuxer_chapter_display_name(demuxer_t *demuxer, int chapter)
1562 {
1563     char *chapter_name = demuxer_chapter_name(demuxer, chapter);
1564     if (chapter_name) {
1565         char *tmp = malloc(strlen(chapter_name) + 14);
1566         snprintf(tmp, 63, "(%d) %s", chapter + 1, chapter_name);
1567         free(chapter_name);
1568         return tmp;
1569     } else {
1570         int chapter_num = demuxer_chapter_count(demuxer);
1571         char tmp[30];
1572         if (chapter_num <= 0)
1573             sprintf(tmp, "(%d)", chapter + 1);
1574         else
1575             sprintf(tmp, "(%d) of %d", chapter + 1, chapter_num);
1576         return strdup(tmp);
1577     }
1578 }
1579
1580 float demuxer_chapter_time(demuxer_t *demuxer, int chapter, float *end)
1581 {
1582     if (demuxer->num_chapters && demuxer->chapters && chapter >= 0
1583         && chapter < demuxer->num_chapters) {
1584         if (end)
1585             *end = demuxer->chapters[chapter].end / 1000.0;
1586         return demuxer->chapters[chapter].start / 1000.0;
1587     }
1588     return -1.0;
1589 }
1590
1591 int demuxer_chapter_count(demuxer_t *demuxer)
1592 {
1593     if (!demuxer->num_chapters || !demuxer->chapters) {
1594         int num_chapters = 0;
1595         if (stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_CHAPTERS,
1596                            &num_chapters) == STREAM_UNSUPPORTED)
1597             num_chapters = 0;
1598         return num_chapters;
1599     } else
1600         return demuxer->num_chapters;
1601 }
1602
1603 int demuxer_angles_count(demuxer_t *demuxer)
1604 {
1605     int ris, angles = -1;
1606
1607     ris = stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_ANGLES, &angles);
1608     if (ris == STREAM_UNSUPPORTED)
1609         return -1;
1610     return angles;
1611 }
1612
1613 int demuxer_get_current_angle(demuxer_t *demuxer)
1614 {
1615     int ris, curr_angle = -1;
1616     ris = stream_control(demuxer->stream, STREAM_CTRL_GET_ANGLE, &curr_angle);
1617     if (ris == STREAM_UNSUPPORTED)
1618         return -1;
1619     return curr_angle;
1620 }
1621
1622
1623 int demuxer_set_angle(demuxer_t *demuxer, int angle)
1624 {
1625     int ris, angles = -1;
1626     sh_video_t *sh_video = demuxer->video->sh;
1627     sh_audio_t *sh_audio = demuxer->audio->sh;
1628
1629     angles = demuxer_angles_count(demuxer);
1630     if ((angles < 1) || (angle > angles))
1631         return -1;
1632
1633     demux_flush(demuxer);
1634
1635     ris = stream_control(demuxer->stream, STREAM_CTRL_SET_ANGLE, &angle);
1636     if (ris == STREAM_UNSUPPORTED)
1637         return -1;
1638
1639     demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
1640     if (sh_video) {
1641         ds_fill_buffer(demuxer->video);
1642         resync_video_stream(sh_video);
1643     }
1644
1645     if (sh_audio) {
1646         ds_fill_buffer(demuxer->audio);
1647         resync_audio_stream(sh_audio);
1648     }
1649
1650     return angle;
1651 }
1652
1653 int demuxer_audio_track_by_lang(demuxer_t *d, char *lang)
1654 {
1655     int i, len;
1656     lang += strspn(lang, ",");
1657     while ((len = strcspn(lang, ",")) > 0) {
1658         for (i = 0; i < MAX_A_STREAMS; ++i) {
1659             sh_audio_t *sh = d->a_streams[i];
1660             if (sh && sh->lang && strncmp(sh->lang, lang, len) == 0)
1661                 return sh->aid;
1662         }
1663         lang += len;
1664         lang += strspn(lang, ",");
1665     }
1666     return -1;
1667 }
1668
1669 int demuxer_sub_track_by_lang(demuxer_t *d, char *lang)
1670 {
1671     int i, len;
1672     lang += strspn(lang, ",");
1673     while ((len = strcspn(lang, ",")) > 0) {
1674         for (i = 0; i < MAX_S_STREAMS; ++i) {
1675             sh_sub_t *sh = d->s_streams[i];
1676             if (sh && sh->lang && strncmp(sh->lang, lang, len) == 0)
1677                 return sh->sid;
1678         }
1679         lang += len;
1680         lang += strspn(lang, ",");
1681     }
1682     return -1;
1683 }
1684
1685 int demuxer_default_audio_track(demuxer_t *d)
1686 {
1687     int i;
1688     for (i = 0; i < MAX_A_STREAMS; ++i) {
1689         sh_audio_t *sh = d->a_streams[i];
1690         if (sh && sh->default_track)
1691             return sh->aid;
1692     }
1693     for (i = 0; i < MAX_A_STREAMS; ++i) {
1694         sh_audio_t *sh = d->a_streams[i];
1695         if (sh)
1696             return sh->aid;
1697     }
1698     return -1;
1699 }
1700
1701 int demuxer_default_sub_track(demuxer_t *d)
1702 {
1703     int i;
1704     for (i = 0; i < MAX_S_STREAMS; ++i) {
1705         sh_sub_t *sh = d->s_streams[i];
1706         if (sh && sh->default_track)
1707             return sh->sid;
1708     }
1709     return -1;
1710 }