1 /*****************************************************************************
2 * demux.c: demuxer using ffmpeg (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>
42 #if defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
43 # include <libavformat/avformat.h>
44 #elif defined(HAVE_FFMPEG_AVFORMAT_H)
45 # include <ffmpeg/avformat.h>
48 #include "../../codec/avcodec/avcodec.h"
51 #include "../vobsub.h"
53 //#define AVFORMAT_DEBUG 1
55 /* Version checking */
56 #if defined(HAVE_FFMPEG_AVFORMAT_H) || defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
58 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(50<<8)+0) )
59 # define HAVE_FFMPEG_CODEC_ATTACHMENT 1
62 /*****************************************************************************
63 * demux_sys_t: demux descriptor
64 *****************************************************************************/
86 input_attachment_t **attachments;
88 /* Only one title with seekpoints possible atm. */
89 input_title_t *p_title;
92 /*****************************************************************************
94 *****************************************************************************/
95 static int Demux ( demux_t *p_demux );
96 static int Control( demux_t *p_demux, int i_query, va_list args );
98 static int IORead( void *opaque, uint8_t *buf, int buf_size );
99 static int64_t IOSeek( void *opaque, int64_t offset, int whence );
101 static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order );
102 static void UpdateSeekPoint( 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, &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 /* Don't try to handle MPEG unless forced */
148 if( !p_demux->b_force &&
149 ( !strcmp( fmt->name, "mpeg" ) ||
150 !strcmp( fmt->name, "vcd" ) ||
151 !strcmp( fmt->name, "vob" ) ||
152 !strcmp( fmt->name, "mpegts" ) ||
153 /* libavformat's redirector won't work */
154 !strcmp( fmt->name, "redir" ) ||
155 !strcmp( fmt->name, "sdp" ) ) )
161 /* Don't trigger false alarms on bin files */
162 if( !p_demux->b_force && !strcmp( fmt->name, "psxstr" ) )
166 if( !p_demux->psz_file )
172 i_len = strlen( p_demux->psz_file );
179 if( strcasecmp( &p_demux->psz_file[i_len - 4], ".str" ) &&
180 strcasecmp( &p_demux->psz_file[i_len - 4], ".xai" ) &&
181 strcasecmp( &p_demux->psz_file[i_len - 3], ".xa" ) )
188 msg_Dbg( p_demux, "detected format: %s", fmt->name );
190 /* Fill p_demux fields */
191 p_demux->pf_demux = Demux;
192 p_demux->pf_control = Control;
193 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
198 p_sys->i_pcr_tk = -1;
200 p_sys->i_ssa_order = 0;
201 TAB_INIT( p_sys->i_attachments, p_sys->attachments);
202 p_sys->p_title = NULL;
204 /* Create I/O wrapper */
205 p_sys->io_buffer_size = 32768; /* FIXME */
206 p_sys->io_buffer = malloc( p_sys->io_buffer_size );
207 p_sys->url.priv_data = p_demux;
208 p_sys->url.prot = &p_sys->prot;
209 p_sys->url.prot->name = "VLC I/O wrapper";
210 p_sys->url.prot->url_open = 0;
211 p_sys->url.prot->url_read =
212 (int (*) (URLContext *, unsigned char *, int))IORead;
213 p_sys->url.prot->url_write = 0;
214 p_sys->url.prot->url_seek =
215 (int64_t (*) (URLContext *, int64_t, int))IOSeek;
216 p_sys->url.prot->url_close = 0;
217 p_sys->url.prot->next = 0;
218 init_put_byte( &p_sys->io, p_sys->io_buffer, p_sys->io_buffer_size,
219 0, &p_sys->url, IORead, NULL, IOSeek );
221 stream_Control( p_demux->s, STREAM_CAN_SEEK, &b_can_seek );
224 /* Tell avformat that input is stream, so it doesn't get stuck
225 when trying av_find_stream_info() trying to seek all the wrong places
226 init_put_byte defaults io.is_streamed=0, so thats why we set them after it
228 p_sys->url.is_streamed = 1;
229 p_sys->io.is_streamed = 1;
234 if( av_open_input_stream( &p_sys->ic, &p_sys->io, psz_url,
237 msg_Err( p_demux, "av_open_input_stream failed" );
239 CloseDemux( p_this );
245 vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
246 if( av_find_stream_info( p_sys->ic ) < 0 )
248 msg_Warn( p_demux, "av_find_stream_info failed" );
250 vlc_avcodec_unlock();
252 for( i = 0; i < p_sys->ic->nb_streams; i++ )
254 AVStream *s = p_sys->ic->streams[i];
255 AVCodecContext *cc = s->codec;
260 const char *psz_type = "unknown";
262 if( !GetVlcFourcc( cc->codec_id, NULL, &fcc, NULL ) )
263 fcc = VLC_FOURCC( 'u', 'n', 'd', 'f' );
265 switch( cc->codec_type )
267 case CODEC_TYPE_AUDIO:
268 es_format_Init( &fmt, AUDIO_ES, fcc );
269 fmt.i_bitrate = cc->bit_rate;
270 fmt.audio.i_channels = cc->channels;
271 fmt.audio.i_rate = cc->sample_rate;
272 fmt.audio.i_bitspersample = cc->bits_per_coded_sample;
273 fmt.audio.i_blockalign = cc->block_align;
277 case CODEC_TYPE_VIDEO:
278 es_format_Init( &fmt, VIDEO_ES, fcc );
280 /* Special case for raw video data */
281 if( cc->codec_id == CODEC_ID_RAWVIDEO )
283 msg_Dbg( p_demux, "raw video, pixel format: %i", cc->pix_fmt );
284 if( GetVlcChroma( &fmt.video, cc->pix_fmt ) != VLC_SUCCESS)
286 msg_Err( p_demux, "was unable to find a FourCC match for raw video" );
289 fmt.i_codec = fmt.video.i_chroma;
291 /* We need this for the h264 packetizer */
292 else if( cc->codec_id == CODEC_ID_H264 && ( !strcmp( p_sys->fmt->name, "flv" ) ||
293 !strcmp( p_sys->fmt->name, "matroska" ) || !strcmp( p_sys->fmt->name, "mp4" ) ) )
294 fmt.i_original_fourcc = VLC_FOURCC( 'a', 'v', 'c', '1' );
296 fmt.video.i_width = cc->width;
297 fmt.video.i_height = cc->height;
300 fmt.video.p_palette = malloc( sizeof(video_palette_t) );
301 *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
304 fmt.video.i_frame_rate = cc->time_base.den;
305 fmt.video.i_frame_rate_base = cc->time_base.num * __MAX( cc->ticks_per_frame, 1 );
308 case CODEC_TYPE_SUBTITLE:
309 es_format_Init( &fmt, SPU_ES, fcc );
310 if( strncmp( p_sys->ic->iformat->name, "matroska", 8 ) == 0 &&
311 cc->codec_id == CODEC_ID_DVD_SUBTITLE &&
312 cc->extradata != NULL &&
313 cc->extradata_size > 0 )
316 char *psz_buf = malloc( cc->extradata_size + 1);
317 if( psz_buf != NULL )
319 memcpy( psz_buf, cc->extradata , cc->extradata_size );
320 psz_buf[cc->extradata_size] = '\0';
322 psz_start = strstr( psz_buf, "size:" );
324 vobsub_size_parse( psz_start,
325 &fmt.subs.spu.i_original_frame_width,
326 &fmt.subs.spu.i_original_frame_height ) == VLC_SUCCESS )
328 msg_Dbg( p_demux, "original frame size: %dx%d",
329 fmt.subs.spu.i_original_frame_width,
330 fmt.subs.spu.i_original_frame_height );
334 msg_Warn( p_demux, "reading original frame size failed" );
337 psz_start = strstr( psz_buf, "palette:" );
339 vobsub_palette_parse( psz_start, &fmt.subs.spu.palette[1] ) == VLC_SUCCESS )
341 fmt.subs.spu.palette[0] = 0xBeef;
342 msg_Dbg( p_demux, "vobsub palette read" );
346 msg_Warn( p_demux, "reading original palette failed" );
352 psz_type = "subtitle";
356 es_format_Init( &fmt, UNKNOWN_ES, 0 );
357 #ifdef HAVE_FFMPEG_CODEC_ATTACHMENT
358 if( cc->codec_type == CODEC_TYPE_ATTACHMENT )
360 input_attachment_t *p_attachment;
361 psz_type = "attachment";
362 if( cc->codec_id == CODEC_ID_TTF )
364 p_attachment = vlc_input_attachment_New( s->filename, "application/x-truetype-font", NULL,
365 cc->extradata, (int)cc->extradata_size );
366 TAB_APPEND( p_sys->i_attachments, p_sys->attachments, p_attachment );
368 else msg_Warn( p_demux, "unsupported attachment type in ffmpeg demux" );
373 if( cc->codec_type == CODEC_TYPE_DATA )
376 msg_Warn( p_demux, "unsupported track type in ffmpeg demux" );
379 fmt.psz_language = strdup( s->language );
380 if( s->disposition & AV_DISPOSITION_DEFAULT )
381 fmt.i_priority = 1000;
383 #ifdef HAVE_FFMPEG_CODEC_ATTACHMENT
384 if( cc->codec_type != CODEC_TYPE_ATTACHMENT )
387 const bool b_ogg = !strcmp( p_sys->fmt->name, "ogg" );
388 const uint8_t *p_extra = cc->extradata;
389 unsigned i_extra = cc->extradata_size;
391 if( cc->codec_id == CODEC_ID_THEORA && b_ogg )
396 for( i_count = 0; i_count < 3; i_count++ )
400 pi_size[i_count] = GetWBE( p_extra );
401 pp_data[i_count] = (uint8_t*)&p_extra[2];
402 if( i_extra < pi_size[i_count] + 2 )
405 p_extra += 2 + pi_size[i_count];
406 i_extra -= 2 + pi_size[i_count];
408 if( i_count > 0 && xiph_PackHeaders( &fmt.i_extra, &fmt.p_extra,
409 pi_size, pp_data, i_count ) )
415 else if( cc->codec_id == CODEC_ID_SPEEX && b_ogg )
417 uint8_t p_dummy_comment[] = {
424 pi_size[0] = i_extra;
425 pp_data[0] = (uint8_t*)p_extra;
427 pi_size[1] = sizeof(p_dummy_comment);
428 pp_data[1] = p_dummy_comment;
430 if( pi_size[0] > 0 && xiph_PackHeaders( &fmt.i_extra, &fmt.p_extra,
431 pi_size, pp_data, 2 ) )
437 else if( cc->extradata_size > 0 )
439 fmt.p_extra = malloc( i_extra );
442 fmt.i_extra = i_extra;
443 memcpy( fmt.p_extra, p_extra, i_extra );
447 es = es_out_Add( p_demux->out, &fmt );
448 if( s->disposition & AV_DISPOSITION_DEFAULT )
449 es_out_Control( p_demux->out, ES_OUT_SET_ES_DEFAULT, es );
450 es_format_Clean( &fmt );
452 msg_Dbg( p_demux, "adding es: %s codec = %4.4s",
453 psz_type, (char*)&fcc );
454 TAB_APPEND( p_sys->i_tk, p_sys->tk, es );
456 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
457 i_start_time = p_sys->ic->start_time * 1000000 / AV_TIME_BASE;
459 msg_Dbg( p_demux, "AVFormat supported stream" );
460 msg_Dbg( p_demux, " - format = %s (%s)",
461 p_sys->fmt->name, p_sys->fmt->long_name );
462 msg_Dbg( p_demux, " - start time = %"PRId64, i_start_time );
463 msg_Dbg( p_demux, " - duration = %"PRId64,
464 ( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE ) ?
465 p_sys->ic->duration * 1000000 / AV_TIME_BASE : -1 );
467 if( p_sys->ic->nb_chapters > 0 )
468 p_sys->p_title = vlc_input_title_New();
469 for( i = 0; i < p_sys->ic->nb_chapters; i++ )
471 seekpoint_t *s = vlc_seekpoint_New();
473 if( p_sys->ic->chapters[i]->title )
475 s->psz_name = strdup( p_sys->ic->chapters[i]->title );
476 EnsureUTF8( s->psz_name );
477 msg_Dbg( p_demux, " - chapter %d: %s", i, s->psz_name );
479 s->i_time_offset = p_sys->ic->chapters[i]->start * 1000000 *
480 p_sys->ic->chapters[i]->time_base.num /
481 p_sys->ic->chapters[i]->time_base.den -
482 (i_start_time != -1 ? i_start_time : 0 );
483 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
489 /*****************************************************************************
491 *****************************************************************************/
492 void CloseDemux( vlc_object_t *p_this )
494 demux_t *p_demux = (demux_t*)p_this;
495 demux_sys_t *p_sys = p_demux->p_sys;
497 FREENULL( p_sys->tk );
499 if( p_sys->ic ) av_close_input_stream( p_sys->ic );
501 for( int i = 0; i < p_sys->i_attachments; i++ )
502 free( p_sys->attachments[i] );
503 TAB_CLEAN( p_sys->i_attachments, p_sys->attachments);
506 vlc_input_title_Delete( p_sys->p_title );
508 free( p_sys->io_buffer );
512 /*****************************************************************************
514 *****************************************************************************/
515 static int Demux( demux_t *p_demux )
517 demux_sys_t *p_sys = p_demux->p_sys;
520 int64_t i_start_time;
523 if( av_read_frame( p_sys->ic, &pkt ) )
527 if( pkt.stream_index < 0 || pkt.stream_index >= p_sys->i_tk )
529 av_free_packet( &pkt );
532 const AVStream *p_stream = p_sys->ic->streams[pkt.stream_index];
533 if( p_stream->time_base.den <= 0 )
535 msg_Warn( p_demux, "Invalid time base for the stream %d", pkt.stream_index );
536 av_free_packet( &pkt );
539 if( p_stream->codec->codec_id == CODEC_ID_SSA )
541 p_frame = BuildSsaFrame( &pkt, p_sys->i_ssa_order++ );
544 av_free_packet( &pkt );
550 if( ( p_frame = block_New( p_demux, pkt.size ) ) == NULL )
552 av_free_packet( &pkt );
555 memcpy( p_frame->p_buffer, pkt.data, pkt.size );
558 if( pkt.flags & PKT_FLAG_KEY )
559 p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
561 i_start_time = ( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ) ?
562 ( p_sys->ic->start_time * 1000000 / AV_TIME_BASE ) : 0;
564 p_frame->i_dts = ( pkt.dts == (int64_t)AV_NOPTS_VALUE ) ?
565 VLC_TS_INVALID : (pkt.dts) * 1000000 *
566 p_stream->time_base.num /
567 p_stream->time_base.den - i_start_time + VLC_TS_0;
568 p_frame->i_pts = ( pkt.pts == (int64_t)AV_NOPTS_VALUE ) ?
569 VLC_TS_INVALID : (pkt.pts) * 1000000 *
570 p_stream->time_base.num /
571 p_stream->time_base.den - i_start_time + VLC_TS_0;
572 if( pkt.duration > 0 && p_frame->i_length <= 0 )
573 p_frame->i_length = pkt.duration * 1000000 *
574 p_stream->time_base.num /
575 p_stream->time_base.den;
577 if( pkt.dts != AV_NOPTS_VALUE && pkt.dts == pkt.pts &&
578 p_stream->codec->codec_type == CODEC_TYPE_VIDEO )
580 /* Add here notoriously bugged file formats/samples regarding PTS */
581 if( !strcmp( p_sys->fmt->name, "flv" ) )
582 p_frame->i_pts = VLC_TS_INVALID;
584 #ifdef AVFORMAT_DEBUG
585 msg_Dbg( p_demux, "tk[%d] dts=%"PRId64" pts=%"PRId64,
586 pkt.stream_index, p_frame->i_dts, p_frame->i_pts );
589 if( p_frame->i_dts > VLC_TS_INVALID &&
590 ( pkt.stream_index == p_sys->i_pcr_tk || p_sys->i_pcr_tk < 0 ) )
592 p_sys->i_pcr_tk = pkt.stream_index;
593 p_sys->i_pcr = p_frame->i_dts;
595 es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
598 es_out_Send( p_demux->out, p_sys->tk[pkt.stream_index], p_frame );
600 UpdateSeekPoint( p_demux, p_sys->i_pcr);
601 av_free_packet( &pkt );
605 static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time )
607 demux_sys_t *p_sys = p_demux->p_sys;
610 if( !p_sys->p_title )
613 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
615 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
620 if( i != p_demux->info.i_seekpoint && i >= 0 )
622 p_demux->info.i_seekpoint = i;
623 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
627 static block_t *BuildSsaFrame( const AVPacket *p_pkt, unsigned i_order )
629 if( p_pkt->size <= 0 )
633 const size_t i_buffer_size = __MIN( sizeof(buffer) - 1, p_pkt->size );
634 memcpy( buffer, p_pkt->data, i_buffer_size );
635 buffer[i_buffer_size] = '\0';
642 if( sscanf( buffer, "Dialogue: %d,%d:%d:%d.%d,%d:%d:%d.%d,%n", &i_layer,
643 &h0, &m0, &s0, &c0, &h1, &m1, &s1, &c1, &i_position ) < 9 )
645 if( i_position <= 0 || i_position >= i_buffer_size )
649 if( asprintf( &p, "%u,%d,%.*s", i_order, i_layer, p_pkt->size - i_position, p_pkt->data + i_position ) < 0 )
652 block_t *p_frame = block_heap_Alloc( p, p, strlen(p) + 1 );
654 p_frame->i_length = CLOCK_FREQ * ((h1 - h1) * 3600 +
657 CLOCK_FREQ * (c1-c0) / 100;
661 /*****************************************************************************
663 *****************************************************************************/
664 static int Control( demux_t *p_demux, int i_query, va_list args )
666 demux_sys_t *p_sys = p_demux->p_sys;
672 case DEMUX_GET_POSITION:
673 pf = (double*) va_arg( args, double* ); *pf = 0.0;
674 i64 = stream_Size( p_demux->s );
677 double current = stream_Tell( p_demux->s );
678 *pf = current / (double)i64;
681 if( (p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
683 *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
688 case DEMUX_SET_POSITION:
689 f = (double) va_arg( args, double );
690 if( p_sys->i_pcr > 0 )
692 i64 = p_sys->ic->duration * f;
693 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
694 i64 += p_sys->ic->start_time;
696 msg_Warn( p_demux, "DEMUX_SET_POSITION: %"PRId64, i64 );
698 /* If we have a duration, we prefer to seek by time
699 but if we don't, or if the seek fails, try BYTE seeking */
700 if( p_sys->ic->duration == (int64_t)AV_NOPTS_VALUE ||
701 (av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0) )
703 int64_t i_size = stream_Size( p_demux->s );
706 msg_Warn( p_demux, "DEMUX_SET_BYTE_POSITION: %"PRId64, i64 );
707 if( av_seek_frame( p_sys->ic, -1, i64, AVSEEK_FLAG_BYTE ) < 0 )
712 UpdateSeekPoint( p_demux, i64 );
714 p_sys->i_pcr = -1; /* Invalidate time display */
718 case DEMUX_GET_LENGTH:
719 pi64 = (int64_t*)va_arg( args, int64_t * );
720 if( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE )
721 *pi64 = p_sys->ic->duration * 1000000 / AV_TIME_BASE;
727 pi64 = (int64_t*)va_arg( args, int64_t * );
728 *pi64 = p_sys->i_pcr;
732 i64 = (int64_t)va_arg( args, int64_t );
733 i64 = i64 *AV_TIME_BASE / 1000000;
734 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
735 i64 += p_sys->ic->start_time;
737 msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
739 if( av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0 )
743 p_sys->i_pcr = -1; /* Invalidate time display */
744 UpdateSeekPoint( p_demux, i64 );
747 case DEMUX_HAS_UNSUPPORTED_META:
749 bool *pb_bool = (bool*)va_arg( args, bool* );
757 vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
759 if( p_sys->ic->title[0] )
760 vlc_meta_SetTitle( p_meta, p_sys->ic->title );
761 if( p_sys->ic->author[0] )
762 vlc_meta_SetArtist( p_meta, p_sys->ic->author );
763 if( p_sys->ic->copyright[0] )
764 vlc_meta_SetCopyright( p_meta, p_sys->ic->copyright );
765 if( p_sys->ic->comment[0] )
766 vlc_meta_SetDescription( p_meta, p_sys->ic->comment );
767 if( p_sys->ic->genre[0] )
768 vlc_meta_SetGenre( p_meta, p_sys->ic->genre );
772 case DEMUX_GET_ATTACHMENTS:
774 input_attachment_t ***ppp_attach =
775 (input_attachment_t***)va_arg( args, input_attachment_t*** );
776 int *pi_int = (int*)va_arg( args, int * );
779 if( p_sys->i_attachments <= 0 )
782 *pi_int = p_sys->i_attachments;;
783 *ppp_attach = malloc( sizeof(input_attachment_t**) * p_sys->i_attachments );
784 for( i = 0; i < p_sys->i_attachments; i++ )
785 (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachments[i] );
789 case DEMUX_GET_TITLE_INFO:
791 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
792 int *pi_int = (int*)va_arg( args, int* );
793 int *pi_title_offset = (int*)va_arg( args, int* );
794 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
796 if( !p_sys->p_title )
800 *ppp_title = malloc( sizeof( input_title_t**) );
801 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
802 *pi_title_offset = 0;
803 *pi_seekpoint_offset = 0;
806 case DEMUX_SET_TITLE:
808 const int i_title = (int)va_arg( args, int );
809 if( !p_sys->p_title || i_title != 0 )
813 case DEMUX_SET_SEEKPOINT:
815 const int i_seekpoint = (int)va_arg( args, int );
816 if( !p_sys->p_title )
819 i64 = p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset *AV_TIME_BASE / 1000000;
820 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
821 i64 += p_sys->ic->start_time;
823 msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
825 if( av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0 )
829 p_sys->i_pcr = -1; /* Invalidate time display */
830 UpdateSeekPoint( p_demux, i64 );
840 /*****************************************************************************
841 * I/O wrappers for libavformat
842 *****************************************************************************/
843 static int IORead( void *opaque, uint8_t *buf, int buf_size )
845 URLContext *p_url = opaque;
846 demux_t *p_demux = p_url->priv_data;
847 if( buf_size < 0 ) return -1;
848 int i_ret = stream_Read( p_demux->s, buf, buf_size );
849 return i_ret ? i_ret : -1;
852 static int64_t IOSeek( void *opaque, int64_t offset, int whence )
854 URLContext *p_url = opaque;
855 demux_t *p_demux = p_url->priv_data;
857 int64_t i_size = stream_Size( p_demux->s );
859 #ifdef AVFORMAT_DEBUG
860 msg_Warn( p_demux, "IOSeek offset: %"PRId64", whence: %i", offset, whence );
870 i_absolute = (int64_t)offset;
873 i_absolute = stream_Tell( p_demux->s ) + (int64_t)offset;
876 i_absolute = i_size + (int64_t)offset;
885 msg_Dbg( p_demux, "Trying to seek before the beginning" );
889 if( i_size > 0 && i_absolute >= i_size )
891 msg_Dbg( p_demux, "Trying to seek too far : EOF?" );
895 if( stream_Seek( p_demux->s, i_absolute ) )
897 msg_Warn( p_demux, "we were not allowed to seek, or EOF " );
901 return stream_Tell( p_demux->s );
904 #endif /* HAVE_LIBAVFORMAT_AVFORMAT_H */