1 /*****************************************************************************
2 * demux.c: demuxer using libavformat
3 *****************************************************************************
4 * Copyright (C) 2004-2009 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_demux.h>
35 #include <vlc_stream.h>
37 #include <vlc_input.h>
38 #include <vlc_charset.h>
39 #include <vlc_avcodec.h>
41 #include <libavformat/avformat.h>
43 #include "../../codec/avcodec/avcodec.h"
44 #include "../../codec/avcodec/chroma.h"
47 #include "../vobsub.h"
49 /* Support for deprecated APIs */
51 #if LIBAVFORMAT_VERSION_MAJOR < 54
52 # define AVDictionaryEntry AVMetadataTag
53 # define av_dict_get av_metadata_get
56 //#define AVFORMAT_DEBUG 1
58 /* Version checking */
59 #if defined(HAVE_FFMPEG_AVFORMAT_H) || defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
61 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(50<<8)+0) )
62 # define HAVE_AVUTIL_CODEC_ATTACHMENT 1
65 /*****************************************************************************
66 * demux_sys_t: demux descriptor
67 *****************************************************************************/
85 input_attachment_t **attachments;
87 /* Only one title with seekpoints possible atm. */
88 input_title_t *p_title;
91 /*****************************************************************************
93 *****************************************************************************/
94 static int Demux ( demux_t *p_demux );
95 static int Control( demux_t *p_demux, int i_query, va_list args );
97 static int IORead( void *opaque, uint8_t *buf, int buf_size );
98 static int64_t IOSeek( void *opaque, int64_t offset, int whence );
100 static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order );
101 static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time );
102 static void ResetTime( demux_t *p_demux, int64_t i_time );
104 /*****************************************************************************
106 *****************************************************************************/
107 int OpenDemux( vlc_object_t *p_this )
109 demux_t *p_demux = (demux_t*)p_this;
114 int64_t i_start_time = -1;
118 if( p_demux->psz_file )
119 psz_url = strdup( p_demux->psz_file );
122 if( asprintf( &psz_url, "%s://%s", p_demux->psz_access, p_demux->psz_location ) == -1)
125 msg_Dbg( p_demux, "trying url: %s", psz_url );
126 /* Init Probe data */
127 pd.filename = psz_url;
128 if( ( pd.buf_size = stream_Peek( p_demux->s, (const uint8_t**)&pd.buf, 2048 + 213 ) ) <= 0 )
131 msg_Warn( p_demux, "cannot peek" );
136 av_register_all(); /* Can be called several times */
137 vlc_avcodec_unlock();
140 if( !( fmt = av_probe_input_format( &pd, 1 ) ) )
142 msg_Dbg( p_demux, "couldn't guess format" );
147 if( !p_demux->b_force )
149 static const char ppsz_blacklist[][16] = {
150 /* Don't handle MPEG unless forced */
151 "mpeg", "vcd", "vob", "mpegts",
152 /* libavformat's redirector won't work */
154 /* Don't handle subtitles format */
155 "ass", "srt", "microdvd",
159 for( int i = 0; *ppsz_blacklist[i]; i++ )
161 if( !strcmp( fmt->name, ppsz_blacklist[i] ) )
169 /* Don't trigger false alarms on bin files */
170 if( !p_demux->b_force && !strcmp( fmt->name, "psxstr" ) )
174 if( !p_demux->psz_file )
180 i_len = strlen( p_demux->psz_file );
187 if( strcasecmp( &p_demux->psz_file[i_len - 4], ".str" ) &&
188 strcasecmp( &p_demux->psz_file[i_len - 4], ".xai" ) &&
189 strcasecmp( &p_demux->psz_file[i_len - 3], ".xa" ) )
196 msg_Dbg( p_demux, "detected format: %s", fmt->name );
198 /* Fill p_demux fields */
199 p_demux->pf_demux = Demux;
200 p_demux->pf_control = Control;
201 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
206 p_sys->tk_pcr = NULL;
207 p_sys->i_ssa_order = 0;
208 TAB_INIT( p_sys->i_attachments, p_sys->attachments);
209 p_sys->p_title = NULL;
211 /* Create I/O wrapper */
212 p_sys->io_buffer_size = 32768; /* FIXME */
213 p_sys->io_buffer = malloc( p_sys->io_buffer_size );
214 init_put_byte( &p_sys->io, p_sys->io_buffer, p_sys->io_buffer_size,
215 0, p_demux, IORead, NULL, IOSeek );
217 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_can_seek );
220 /* Tell avformat that input is stream, so it doesn't get stuck
221 when trying av_find_stream_info() trying to seek all the wrong places
222 init_put_byte defaults io.is_streamed=0, so thats why we set them after it
224 p_sys->io.is_streamed = 1;
225 #if defined(AVIO_SEEKABLE_NORMAL)
226 p_sys->io.seekable = 0;
232 if( av_open_input_stream( &p_sys->ic, &p_sys->io, psz_url,
235 msg_Err( p_demux, "av_open_input_stream failed" );
238 CloseDemux( p_this );
244 vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
245 if( av_find_stream_info( p_sys->ic ) < 0 )
247 msg_Warn( p_demux, "av_find_stream_info failed" );
249 vlc_avcodec_unlock();
251 for( i = 0; i < p_sys->ic->nb_streams; i++ )
253 AVStream *s = p_sys->ic->streams[i];
254 AVCodecContext *cc = s->codec;
259 const char *psz_type = "unknown";
261 if( !GetVlcFourcc( cc->codec_id, NULL, &fcc, NULL ) )
262 fcc = VLC_FOURCC( 'u', 'n', 'd', 'f' );
264 switch( cc->codec_type )
266 case AVMEDIA_TYPE_AUDIO:
267 es_format_Init( &fmt, AUDIO_ES, fcc );
268 fmt.i_bitrate = cc->bit_rate;
269 fmt.audio.i_channels = cc->channels;
270 fmt.audio.i_rate = cc->sample_rate;
271 fmt.audio.i_bitspersample = cc->bits_per_coded_sample;
272 fmt.audio.i_blockalign = cc->block_align;
276 case AVMEDIA_TYPE_VIDEO:
277 es_format_Init( &fmt, VIDEO_ES, fcc );
279 /* Special case for raw video data */
280 if( cc->codec_id == CODEC_ID_RAWVIDEO )
282 msg_Dbg( p_demux, "raw video, pixel format: %i", cc->pix_fmt );
283 if( GetVlcChroma( &fmt.video, cc->pix_fmt ) != VLC_SUCCESS)
285 msg_Err( p_demux, "was unable to find a FourCC match for raw video" );
288 fmt.i_codec = fmt.video.i_chroma;
290 /* We need this for the h264 packetizer */
291 else if( cc->codec_id == CODEC_ID_H264 && ( p_sys->fmt == av_find_input_format("flv") ||
292 p_sys->fmt == av_find_input_format("matroska") || p_sys->fmt == av_find_input_format("mp4") ) )
293 fmt.i_original_fourcc = VLC_FOURCC( 'a', 'v', 'c', '1' );
295 fmt.video.i_width = cc->width;
296 fmt.video.i_height = cc->height;
299 fmt.video.p_palette = malloc( sizeof(video_palette_t) );
300 *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
303 fmt.video.i_frame_rate = cc->time_base.den;
304 fmt.video.i_frame_rate_base = cc->time_base.num * __MAX( cc->ticks_per_frame, 1 );
307 case AVMEDIA_TYPE_SUBTITLE:
308 es_format_Init( &fmt, SPU_ES, fcc );
309 if( strncmp( p_sys->ic->iformat->name, "matroska", 8 ) == 0 &&
310 cc->codec_id == CODEC_ID_DVD_SUBTITLE &&
311 cc->extradata != NULL &&
312 cc->extradata_size > 0 )
315 char *psz_buf = malloc( cc->extradata_size + 1);
316 if( psz_buf != NULL )
318 memcpy( psz_buf, cc->extradata , cc->extradata_size );
319 psz_buf[cc->extradata_size] = '\0';
321 psz_start = strstr( psz_buf, "size:" );
323 vobsub_size_parse( psz_start,
324 &fmt.subs.spu.i_original_frame_width,
325 &fmt.subs.spu.i_original_frame_height ) == VLC_SUCCESS )
327 msg_Dbg( p_demux, "original frame size: %dx%d",
328 fmt.subs.spu.i_original_frame_width,
329 fmt.subs.spu.i_original_frame_height );
333 msg_Warn( p_demux, "reading original frame size failed" );
336 psz_start = strstr( psz_buf, "palette:" );
338 vobsub_palette_parse( psz_start, &fmt.subs.spu.palette[1] ) == VLC_SUCCESS )
340 fmt.subs.spu.palette[0] = 0xBeef;
341 msg_Dbg( p_demux, "vobsub palette read" );
345 msg_Warn( p_demux, "reading original palette failed" );
351 psz_type = "subtitle";
355 es_format_Init( &fmt, UNKNOWN_ES, 0 );
356 #ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
357 if( cc->codec_type == AVMEDIA_TYPE_ATTACHMENT )
359 input_attachment_t *p_attachment;
361 psz_type = "attachment";
362 if( cc->codec_id == CODEC_ID_TTF )
364 AVDictionaryEntry *filename = av_dict_get( s->metadata, "filename", NULL, 0 );
365 if( filename && filename->value )
367 p_attachment = vlc_input_attachment_New(
368 filename->value, "application/x-truetype-font",
369 NULL, cc->extradata, (int)cc->extradata_size );
370 TAB_APPEND( p_sys->i_attachments, p_sys->attachments,
374 else msg_Warn( p_demux, "unsupported attachment type (%u) in avformat demux", cc->codec_id );
379 if( cc->codec_type == AVMEDIA_TYPE_DATA )
382 msg_Warn( p_demux, "unsupported track type (%u:%u) in avformat demux", cc->codec_type, cc->codec_id );
387 AVDictionaryEntry *language = av_dict_get( s->metadata, "language", NULL, 0 );
388 if ( language && language->value )
389 fmt.psz_language = strdup( language->value );
391 if( s->disposition & AV_DISPOSITION_DEFAULT )
392 fmt.i_priority = 1000;
394 #ifdef HAVE_AVUTIL_CODEC_ATTACHMENT
395 if( cc->codec_type != AVMEDIA_TYPE_ATTACHMENT )
397 if( cc->codec_type != AVMEDIA_TYPE_DATA )
399 const bool b_ogg = !strcmp( p_sys->fmt->name, "ogg" );
400 const uint8_t *p_extra = cc->extradata;
401 unsigned i_extra = cc->extradata_size;
403 if( cc->codec_id == CODEC_ID_THEORA && b_ogg )
406 const void *pp_data[3];
408 for( i_count = 0; i_count < 3; i_count++ )
412 pi_size[i_count] = GetWBE( p_extra );
413 pp_data[i_count] = &p_extra[2];
414 if( i_extra < pi_size[i_count] + 2 )
417 p_extra += 2 + pi_size[i_count];
418 i_extra -= 2 + pi_size[i_count];
420 if( i_count > 0 && xiph_PackHeaders( &fmt.i_extra, &fmt.p_extra,
421 pi_size, pp_data, i_count ) )
427 else if( cc->codec_id == CODEC_ID_SPEEX && b_ogg )
429 const uint8_t p_dummy_comment[] = {
434 const void *pp_data[2];
436 pi_size[0] = i_extra;
437 pp_data[0] = p_extra;
439 pi_size[1] = sizeof(p_dummy_comment);
440 pp_data[1] = p_dummy_comment;
442 if( pi_size[0] > 0 && xiph_PackHeaders( &fmt.i_extra, &fmt.p_extra,
443 pi_size, pp_data, 2 ) )
449 else if( cc->extradata_size > 0 )
451 fmt.p_extra = malloc( i_extra );
454 fmt.i_extra = i_extra;
455 memcpy( fmt.p_extra, p_extra, i_extra );
458 es = es_out_Add( p_demux->out, &fmt );
459 if( s->disposition & AV_DISPOSITION_DEFAULT )
460 es_out_Control( p_demux->out, ES_OUT_SET_ES_DEFAULT, es );
461 es_format_Clean( &fmt );
463 msg_Dbg( p_demux, "adding es: %s codec = %4.4s",
464 psz_type, (char*)&fcc );
465 TAB_APPEND( p_sys->i_tk, p_sys->tk, es );
468 p_sys->tk_pcr = calloc( p_sys->i_tk, sizeof(*p_sys->tk_pcr) );
470 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
471 i_start_time = p_sys->ic->start_time * 1000000 / AV_TIME_BASE;
473 msg_Dbg( p_demux, "AVFormat supported stream" );
474 msg_Dbg( p_demux, " - format = %s (%s)",
475 p_sys->fmt->name, p_sys->fmt->long_name );
476 msg_Dbg( p_demux, " - start time = %"PRId64, i_start_time );
477 msg_Dbg( p_demux, " - duration = %"PRId64,
478 ( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE ) ?
479 p_sys->ic->duration * 1000000 / AV_TIME_BASE : -1 );
481 if( p_sys->ic->nb_chapters > 0 )
483 p_sys->p_title = vlc_input_title_New();
484 p_sys->p_title->i_length = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
487 for( i = 0; i < p_sys->ic->nb_chapters; i++ )
489 seekpoint_t *s = vlc_seekpoint_New();
491 AVDictionaryEntry *title = av_dict_get( p_sys->ic->metadata, "title", NULL, 0);
492 if( title && title->value )
494 s->psz_name = strdup( title->value );
495 EnsureUTF8( s->psz_name );
496 msg_Dbg( p_demux, " - chapter %d: %s", i, s->psz_name );
498 s->i_time_offset = p_sys->ic->chapters[i]->start * 1000000 *
499 p_sys->ic->chapters[i]->time_base.num /
500 p_sys->ic->chapters[i]->time_base.den -
501 (i_start_time != -1 ? i_start_time : 0 );
502 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
505 ResetTime( p_demux, 0 );
509 /*****************************************************************************
511 *****************************************************************************/
512 void CloseDemux( vlc_object_t *p_this )
514 demux_t *p_demux = (demux_t*)p_this;
515 demux_sys_t *p_sys = p_demux->p_sys;
517 FREENULL( p_sys->tk );
518 free( p_sys->tk_pcr );
520 if( p_sys->ic ) av_close_input_stream( p_sys->ic );
522 for( int i = 0; i < p_sys->i_attachments; i++ )
523 free( p_sys->attachments[i] );
524 TAB_CLEAN( p_sys->i_attachments, p_sys->attachments);
527 vlc_input_title_Delete( p_sys->p_title );
529 free( p_sys->io_buffer );
533 /*****************************************************************************
535 *****************************************************************************/
536 static int Demux( demux_t *p_demux )
538 demux_sys_t *p_sys = p_demux->p_sys;
541 int64_t i_start_time;
544 if( av_read_frame( p_sys->ic, &pkt ) )
548 if( pkt.stream_index < 0 || pkt.stream_index >= p_sys->i_tk )
550 av_free_packet( &pkt );
553 const AVStream *p_stream = p_sys->ic->streams[pkt.stream_index];
554 if( p_stream->time_base.den <= 0 )
556 msg_Warn( p_demux, "Invalid time base for the stream %d", pkt.stream_index );
557 av_free_packet( &pkt );
560 if( p_stream->codec->codec_id == CODEC_ID_SSA )
562 p_frame = BuildSsaFrame( &pkt, p_sys->i_ssa_order++ );
565 av_free_packet( &pkt );
571 if( ( p_frame = block_New( p_demux, pkt.size ) ) == NULL )
573 av_free_packet( &pkt );
576 memcpy( p_frame->p_buffer, pkt.data, pkt.size );
579 if( pkt.flags & AV_PKT_FLAG_KEY )
580 p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
582 i_start_time = ( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ) ?
583 ( p_sys->ic->start_time * 1000000 / AV_TIME_BASE ) : 0;
585 p_frame->i_dts = ( pkt.dts == (int64_t)AV_NOPTS_VALUE ) ?
586 VLC_TS_INVALID : (pkt.dts) * 1000000 *
587 p_stream->time_base.num /
588 p_stream->time_base.den - i_start_time + VLC_TS_0;
589 p_frame->i_pts = ( pkt.pts == (int64_t)AV_NOPTS_VALUE ) ?
590 VLC_TS_INVALID : (pkt.pts) * 1000000 *
591 p_stream->time_base.num /
592 p_stream->time_base.den - i_start_time + VLC_TS_0;
593 if( pkt.duration > 0 && p_frame->i_length <= 0 )
594 p_frame->i_length = pkt.duration * 1000000 *
595 p_stream->time_base.num /
596 p_stream->time_base.den;
598 if( pkt.dts != AV_NOPTS_VALUE && pkt.dts == pkt.pts &&
599 p_stream->codec->codec_type == AVMEDIA_TYPE_VIDEO )
601 /* Add here notoriously bugged file formats/samples regarding PTS */
602 if( !strcmp( p_sys->fmt->name, "flv" ) )
603 p_frame->i_pts = VLC_TS_INVALID;
605 #ifdef AVFORMAT_DEBUG
606 msg_Dbg( p_demux, "tk[%d] dts=%"PRId64" pts=%"PRId64,
607 pkt.stream_index, p_frame->i_dts, p_frame->i_pts );
609 if( p_frame->i_dts > VLC_TS_INVALID )
610 p_sys->tk_pcr[pkt.stream_index] = p_frame->i_dts;
612 int64_t i_ts_max = INT64_MIN;
613 for( int i = 0; i < p_sys->i_tk; i++ )
614 i_ts_max = __MAX( i_ts_max, p_sys->tk_pcr[i] );
616 int64_t i_ts_min = INT64_MAX;
617 for( int i = 0; i < p_sys->i_tk; i++ )
619 if( p_sys->tk_pcr[i] > VLC_TS_INVALID && p_sys->tk_pcr[i] + 10 * CLOCK_FREQ >= i_ts_max )
620 i_ts_min = __MIN( i_ts_min, p_sys->tk_pcr[i] );
622 if( i_ts_min >= p_sys->i_pcr )
624 p_sys->i_pcr = i_ts_min;
625 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
626 UpdateSeekPoint( p_demux, p_sys->i_pcr );
629 es_out_Send( p_demux->out, p_sys->tk[pkt.stream_index], p_frame );
631 av_free_packet( &pkt );
635 static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time )
637 demux_sys_t *p_sys = p_demux->p_sys;
640 if( !p_sys->p_title )
643 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
645 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
650 if( i != p_demux->info.i_seekpoint && i >= 0 )
652 p_demux->info.i_seekpoint = i;
653 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
657 static void ResetTime( demux_t *p_demux, int64_t i_time )
659 demux_sys_t *p_sys = p_demux->p_sys;
661 if( p_sys->ic->start_time == (int64_t)AV_NOPTS_VALUE || i_time < 0 )
662 i_time = VLC_TS_INVALID;
663 else if( i_time == 0 )
666 p_sys->i_pcr = i_time;
667 for( int i = 0; i < p_sys->i_tk; i++ )
668 p_sys->tk_pcr[i] = i_time;
670 if( i_time > VLC_TS_INVALID )
672 es_out_Control( p_demux->out, ES_OUT_SET_NEXT_DISPLAY_TIME, i_time );
673 UpdateSeekPoint( p_demux, i_time );
677 static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order )
679 if( p_pkt->size <= 0 )
683 const size_t i_buffer_size = __MIN( (int)sizeof(buffer) - 1, p_pkt->size );
684 memcpy( buffer, p_pkt->data, i_buffer_size );
685 buffer[i_buffer_size] = '\0';
692 if( sscanf( buffer, "Dialogue: %d,%d:%d:%d.%d,%d:%d:%d.%d,%n", &i_layer,
693 &h0, &m0, &s0, &c0, &h1, &m1, &s1, &c1, &i_position ) < 9 )
695 if( i_position <= 0 || (unsigned)i_position >= i_buffer_size )
699 if( asprintf( &p, "%u,%d,%.*s", i_order, i_layer, p_pkt->size - i_position, p_pkt->data + i_position ) < 0 )
702 block_t *p_frame = block_heap_Alloc( p, p, strlen(p) + 1 );
704 p_frame->i_length = CLOCK_FREQ * ((h1-h0) * 3600 +
707 CLOCK_FREQ * (c1-c0) / 100;
711 /*****************************************************************************
713 *****************************************************************************/
714 static int Control( demux_t *p_demux, int i_query, va_list args )
716 demux_sys_t *p_sys = p_demux->p_sys;
717 const int64_t i_start_time = p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ? p_sys->ic->start_time : 0;
723 case DEMUX_GET_POSITION:
724 pf = (double*) va_arg( args, double* ); *pf = 0.0;
725 i64 = stream_Size( p_demux->s );
728 double current = stream_Tell( p_demux->s );
729 *pf = current / (double)i64;
732 if( (p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
734 *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
739 case DEMUX_SET_POSITION:
740 f = (double) va_arg( args, double );
741 i64 = p_sys->ic->duration * f + i_start_time;
743 msg_Warn( p_demux, "DEMUX_SET_POSITION: %"PRId64, i64 );
745 /* If we have a duration, we prefer to seek by time
746 but if we don't, or if the seek fails, try BYTE seeking */
747 if( p_sys->ic->duration == (int64_t)AV_NOPTS_VALUE ||
748 (av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0) )
750 int64_t i_size = stream_Size( p_demux->s );
753 msg_Warn( p_demux, "DEMUX_SET_BYTE_POSITION: %"PRId64, i64 );
754 if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BYTE ) < 0 )
757 ResetTime( p_demux, -1 );
761 ResetTime( p_demux, i64 - i_start_time );
765 case DEMUX_GET_LENGTH:
766 pi64 = (int64_t*)va_arg( args, int64_t * );
767 if( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE )
768 *pi64 = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
774 pi64 = (int64_t*)va_arg( args, int64_t * );
775 *pi64 = p_sys->i_pcr;
780 i64 = (int64_t)va_arg( args, int64_t );
781 i64 = i64 *AV_TIME_BASE / 1000000 + i_start_time;
783 msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
785 if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0 )
789 ResetTime( p_demux, i64 - i_start_time );
793 case DEMUX_HAS_UNSUPPORTED_META:
795 bool *pb_bool = (bool*)va_arg( args, bool* );
803 vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
805 AVDictionaryEntry *title = av_dict_get( p_sys->ic->metadata, "language", NULL, 0 );
806 AVDictionaryEntry *artist = av_dict_get( p_sys->ic->metadata, "artist", NULL, 0 );
807 AVDictionaryEntry *copyright = av_dict_get( p_sys->ic->metadata, "copyright", NULL, 0 );
808 AVDictionaryEntry *comment = av_dict_get( p_sys->ic->metadata, "comment", NULL, 0 );
809 AVDictionaryEntry *genre = av_dict_get( p_sys->ic->metadata, "genre", NULL, 0 );
811 if( title && title->value )
812 vlc_meta_SetTitle( p_meta, title->value );
813 if( artist && artist->value )
814 vlc_meta_SetArtist( p_meta, artist->value );
815 if( copyright && copyright->value )
816 vlc_meta_SetCopyright( p_meta, copyright->value );
817 if( comment && comment->value )
818 vlc_meta_SetDescription( p_meta, comment->value );
819 if( genre && genre->value )
820 vlc_meta_SetGenre( p_meta, genre->value );
824 case DEMUX_GET_ATTACHMENTS:
826 input_attachment_t ***ppp_attach =
827 (input_attachment_t***)va_arg( args, input_attachment_t*** );
828 int *pi_int = (int*)va_arg( args, int * );
831 if( p_sys->i_attachments <= 0 )
834 *pi_int = p_sys->i_attachments;;
835 *ppp_attach = malloc( sizeof(input_attachment_t**) * p_sys->i_attachments );
836 for( i = 0; i < p_sys->i_attachments; i++ )
837 (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachments[i] );
841 case DEMUX_GET_TITLE_INFO:
843 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
844 int *pi_int = (int*)va_arg( args, int* );
845 int *pi_title_offset = (int*)va_arg( args, int* );
846 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
848 if( !p_sys->p_title )
852 *ppp_title = malloc( sizeof( input_title_t**) );
853 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
854 *pi_title_offset = 0;
855 *pi_seekpoint_offset = 0;
858 case DEMUX_SET_TITLE:
860 const int i_title = (int)va_arg( args, int );
861 if( !p_sys->p_title || i_title != 0 )
865 case DEMUX_SET_SEEKPOINT:
867 const int i_seekpoint = (int)va_arg( args, int );
868 if( !p_sys->p_title )
871 i64 = p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset *
872 AV_TIME_BASE / 1000000 + i_start_time;
874 msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
876 if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BACKWARD ) < 0 )
880 ResetTime( p_demux, i64 - i_start_time );
890 /*****************************************************************************
891 * I/O wrappers for libavformat
892 *****************************************************************************/
893 static int IORead( void *opaque, uint8_t *buf, int buf_size )
895 demux_t *p_demux = opaque;
896 if( buf_size < 0 ) return -1;
897 int i_ret = stream_Read( p_demux->s, buf, buf_size );
898 return i_ret ? i_ret : -1;
901 static int64_t IOSeek( void *opaque, int64_t offset, int whence )
903 demux_t *p_demux = opaque;
905 int64_t i_size = stream_Size( p_demux->s );
907 #ifdef AVFORMAT_DEBUG
908 msg_Warn( p_demux, "IOSeek offset: %"PRId64", whence: %i", offset, whence );
918 i_absolute = (int64_t)offset;
921 i_absolute = stream_Tell( p_demux->s ) + (int64_t)offset;
924 i_absolute = i_size + (int64_t)offset;
933 msg_Dbg( p_demux, "Trying to seek before the beginning" );
937 if( i_size > 0 && i_absolute >= i_size )
939 msg_Dbg( p_demux, "Trying to seek too far : EOF?" );
943 if( stream_Seek( p_demux->s, i_absolute ) )
945 msg_Warn( p_demux, "we were not allowed to seek, or EOF " );
949 return stream_Tell( p_demux->s );
952 #endif /* HAVE_LIBAVFORMAT_AVFORMAT_H */