1 /*****************************************************************************
2 * demux.c: demuxer using ffmpeg (libavformat).
3 *****************************************************************************
4 * Copyright (C) 2004-2007 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 //#define AVFORMAT_DEBUG 1
53 /* Version checking */
54 #if defined(HAVE_FFMPEG_AVFORMAT_H) || defined(HAVE_LIBAVFORMAT_AVFORMAT_H)
56 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(50<<8)+0) )
57 # define HAVE_FFMPEG_CODEC_ATTACHMENT 1
60 #if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(15<<8)+0) )
61 # define HAVE_FFMPEG_CHAPTERS 1
64 /*****************************************************************************
65 * demux_sys_t: demux descriptor
66 *****************************************************************************/
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 void UpdateSeekPoint( demux_t *p_demux, int64_t i_time );
103 /*****************************************************************************
105 *****************************************************************************/
106 int OpenDemux( vlc_object_t *p_this )
108 demux_t *p_demux = (demux_t*)p_this;
114 int64_t i_start_time = -1;
116 /* Init Probe data */
117 pd.filename = p_demux->psz_path;
118 if( ( pd.buf_size = stream_Peek( p_demux->s, &pd.buf, 2048 ) ) <= 0 )
120 msg_Warn( p_demux, "cannot peek" );
124 av_register_all(); /* Can be called several times */
127 if( !( fmt = av_probe_input_format( &pd, 1 ) ) )
129 msg_Dbg( p_demux, "couldn't guess format" );
133 /* Don't try to handle MPEG unless forced */
134 if( !p_demux->b_force &&
135 ( !strcmp( fmt->name, "mpeg" ) ||
136 !strcmp( fmt->name, "vcd" ) ||
137 !strcmp( fmt->name, "vob" ) ||
138 !strcmp( fmt->name, "mpegts" ) ||
139 /* libavformat's redirector won't work */
140 !strcmp( fmt->name, "redir" ) ||
141 !strcmp( fmt->name, "sdp" ) ) )
146 /* Don't trigger false alarms on bin files */
147 if( !p_demux->b_force && !strcmp( fmt->name, "psxstr" ) )
151 if( !p_demux->psz_path ) return VLC_EGENERIC;
153 i_len = strlen( p_demux->psz_path );
154 if( i_len < 4 ) return VLC_EGENERIC;
156 if( strcasecmp( &p_demux->psz_path[i_len - 4], ".str" ) &&
157 strcasecmp( &p_demux->psz_path[i_len - 4], ".xai" ) &&
158 strcasecmp( &p_demux->psz_path[i_len - 3], ".xa" ) )
164 msg_Dbg( p_demux, "detected format: %s", fmt->name );
166 /* Fill p_demux fields */
167 p_demux->pf_demux = Demux;
168 p_demux->pf_control = Control;
169 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
174 p_sys->i_pcr_tk = -1;
176 TAB_INIT( p_sys->i_attachments, p_sys->attachments);
177 p_sys->p_title = NULL;
179 /* Create I/O wrapper */
180 p_sys->io_buffer_size = 32768; /* FIXME */
181 p_sys->io_buffer = malloc( p_sys->io_buffer_size );
182 p_sys->url.priv_data = p_demux;
183 p_sys->url.prot = &p_sys->prot;
184 p_sys->url.prot->name = "VLC I/O wrapper";
185 p_sys->url.prot->url_open = 0;
186 p_sys->url.prot->url_read =
187 (int (*) (URLContext *, unsigned char *, int))IORead;
188 p_sys->url.prot->url_write = 0;
189 p_sys->url.prot->url_seek =
190 (int64_t (*) (URLContext *, int64_t, int))IOSeek;
191 p_sys->url.prot->url_close = 0;
192 p_sys->url.prot->next = 0;
193 init_put_byte( &p_sys->io, p_sys->io_buffer, p_sys->io_buffer_size,
194 0, &p_sys->url, IORead, NULL, IOSeek );
196 b_avfmt_nofile = p_sys->fmt->flags & AVFMT_NOFILE;
197 p_sys->fmt->flags |= AVFMT_NOFILE; /* libavformat must not fopen/fclose */
200 if( av_open_input_stream( &p_sys->ic, &p_sys->io, p_demux->psz_path,
203 msg_Err( p_demux, "av_open_input_stream failed" );
204 if( !b_avfmt_nofile ) p_sys->fmt->flags ^= AVFMT_NOFILE;
205 CloseDemux( p_this );
209 vlc_avcodec_lock(); /* avformat calls avcodec behind our back!!! */
210 if( av_find_stream_info( p_sys->ic ) < 0 )
212 vlc_avcodec_unlock();
213 msg_Err( p_demux, "av_find_stream_info failed" );
214 if( !b_avfmt_nofile ) p_sys->fmt->flags ^= AVFMT_NOFILE;
215 CloseDemux( p_this );
218 vlc_avcodec_unlock();
219 if( !b_avfmt_nofile ) p_sys->fmt->flags ^= AVFMT_NOFILE;
221 for( i = 0; i < p_sys->ic->nb_streams; i++ )
223 AVCodecContext *cc = p_sys->ic->streams[i]->codec;
227 const char *psz_type = "unknown";
229 if( !GetVlcFourcc( cc->codec_id, NULL, &fcc, NULL ) )
230 fcc = VLC_FOURCC( 'u', 'n', 'd', 'f' );
232 switch( cc->codec_type )
234 case CODEC_TYPE_AUDIO:
235 es_format_Init( &fmt, AUDIO_ES, fcc );
236 fmt.audio.i_channels = cc->channels;
237 fmt.audio.i_rate = cc->sample_rate;
238 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
239 fmt.audio.i_bitspersample = cc->bits_per_sample;
241 fmt.audio.i_bitspersample = cc->bits_per_coded_sample;
243 fmt.audio.i_blockalign = cc->block_align;
247 case CODEC_TYPE_VIDEO:
248 es_format_Init( &fmt, VIDEO_ES, fcc );
250 /* Special case for raw video data */
251 if( cc->codec_id == CODEC_ID_RAWVIDEO )
253 msg_Dbg( p_demux, "raw video, pixel format: %i", cc->pix_fmt );
254 if( GetVlcChroma( &fmt.video, cc->pix_fmt ) != VLC_SUCCESS)
256 msg_Err( p_demux, "was unable to find a FourCC match for raw video" );
259 fmt.i_codec = fmt.video.i_chroma;
262 fmt.video.i_width = cc->width;
263 fmt.video.i_height = cc->height;
266 fmt.video.p_palette = malloc( sizeof(video_palette_t) );
267 *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
272 case CODEC_TYPE_SUBTITLE:
273 es_format_Init( &fmt, SPU_ES, fcc );
274 psz_type = "subtitle";
278 es_format_Init( &fmt, UNKNOWN_ES, 0 );
279 #ifdef HAVE_FFMPEG_CODEC_ATTACHMENT
280 if( cc->codec_type == CODEC_TYPE_ATTACHMENT )
282 input_attachment_t *p_attachment;
283 psz_type = "attachment";
284 if( cc->codec_id == CODEC_ID_TTF )
286 p_attachment = vlc_input_attachment_New( p_sys->ic->streams[i]->filename, "application/x-truetype-font", NULL,
287 cc->extradata, (int)cc->extradata_size );
288 TAB_APPEND( p_sys->i_attachments, p_sys->attachments, p_attachment );
290 else msg_Warn( p_demux, "unsupported attachment type in ffmpeg demux" );
295 if( cc->codec_type == CODEC_TYPE_DATA )
298 msg_Warn( p_demux, "unsupported track type in ffmpeg demux" );
301 fmt.psz_language = p_sys->ic->streams[i]->language;
303 #ifdef HAVE_FFMPEG_CODEC_ATTACHMENT
304 if( cc->codec_type != CODEC_TYPE_ATTACHMENT )
307 fmt.i_extra = cc->extradata_size;
308 fmt.p_extra = cc->extradata;
310 es = es_out_Add( p_demux->out, &fmt );
312 msg_Dbg( p_demux, "adding es: %s codec = %4.4s",
313 psz_type, (char*)&fcc );
314 TAB_APPEND( p_sys->i_tk, p_sys->tk, es );
316 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
317 i_start_time = p_sys->ic->start_time * 1000000 / AV_TIME_BASE;
319 msg_Dbg( p_demux, "AVFormat supported stream" );
320 msg_Dbg( p_demux, " - format = %s (%s)",
321 p_sys->fmt->name, p_sys->fmt->long_name );
322 msg_Dbg( p_demux, " - start time = %"PRId64, i_start_time );
323 msg_Dbg( p_demux, " - duration = %"PRId64,
324 ( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE ) ?
325 p_sys->ic->duration * 1000000 / AV_TIME_BASE : -1 );
327 #ifdef HAVE_FFMPEG_CHAPTERS
328 if( p_sys->ic->nb_chapters > 0 )
329 p_sys->p_title = vlc_input_title_New();
330 for( i = 0; i < p_sys->ic->nb_chapters; i++ )
332 seekpoint_t *s = vlc_seekpoint_New();
334 if( p_sys->ic->chapters[i]->title )
336 s->psz_name = strdup( p_sys->ic->chapters[i]->title );
337 EnsureUTF8( s->psz_name );
338 msg_Dbg( p_demux, " - chapter %d: %s", i, s->psz_name );
340 s->i_time_offset = p_sys->ic->chapters[i]->start * 1000000 *
341 p_sys->ic->chapters[i]->time_base.num /
342 p_sys->ic->chapters[i]->time_base.den -
343 (i_start_time != -1 ? i_start_time : 0 );
344 TAB_APPEND( p_sys->p_title->i_seekpoint, p_sys->p_title->seekpoint, s );
351 /*****************************************************************************
353 *****************************************************************************/
354 void CloseDemux( vlc_object_t *p_this )
356 demux_t *p_demux = (demux_t*)p_this;
357 demux_sys_t *p_sys = p_demux->p_sys;
360 FREENULL( p_sys->tk );
362 b_avfmt_nofile = p_sys->fmt->flags & AVFMT_NOFILE;
363 p_sys->fmt->flags |= AVFMT_NOFILE; /* libavformat must not fopen/fclose */
364 if( p_sys->ic ) av_close_input_file( p_sys->ic );
365 if( !b_avfmt_nofile ) p_sys->fmt->flags ^= AVFMT_NOFILE;
367 for( int i = 0; i < p_sys->i_attachments; i++ )
368 free( p_sys->attachments[i] );
369 TAB_CLEAN( p_sys->i_attachments, p_sys->attachments);
372 vlc_input_title_Delete( p_sys->p_title );
374 free( p_sys->io_buffer );
378 /*****************************************************************************
380 *****************************************************************************/
381 static int Demux( demux_t *p_demux )
383 demux_sys_t *p_sys = p_demux->p_sys;
386 int64_t i_start_time;
389 if( av_read_frame( p_sys->ic, &pkt ) )
393 if( pkt.stream_index < 0 || pkt.stream_index >= p_sys->i_tk )
395 av_free_packet( &pkt );
398 if( ( p_frame = block_New( p_demux, pkt.size ) ) == NULL )
403 memcpy( p_frame->p_buffer, pkt.data, pkt.size );
405 if( pkt.flags & PKT_FLAG_KEY )
406 p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
408 i_start_time = ( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE ) ?
409 ( p_sys->ic->start_time * 1000000 / AV_TIME_BASE ) : 0;
411 p_frame->i_dts = ( pkt.dts == (int64_t)AV_NOPTS_VALUE ) ?
412 0 : (pkt.dts) * 1000000 *
413 p_sys->ic->streams[pkt.stream_index]->time_base.num /
414 p_sys->ic->streams[pkt.stream_index]->time_base.den - i_start_time;
415 p_frame->i_pts = ( pkt.pts == (int64_t)AV_NOPTS_VALUE ) ?
416 0 : (pkt.pts) * 1000000 *
417 p_sys->ic->streams[pkt.stream_index]->time_base.num /
418 p_sys->ic->streams[pkt.stream_index]->time_base.den - i_start_time;
419 if( pkt.duration > 0 )
420 p_frame->i_length = pkt.duration * 1000000 *
421 p_sys->ic->streams[pkt.stream_index]->time_base.num /
422 p_sys->ic->streams[pkt.stream_index]->time_base.den - i_start_time;
424 #ifdef AVFORMAT_DEBUG
425 msg_Dbg( p_demux, "tk[%d] dts=%"PRId64" pts=%"PRId64,
426 pkt.stream_index, p_frame->i_dts, p_frame->i_pts );
430 ( pkt.stream_index == p_sys->i_pcr_tk || p_sys->i_pcr_tk < 0 ) )
432 p_sys->i_pcr_tk = pkt.stream_index;
433 p_sys->i_pcr = p_frame->i_dts;
435 es_out_Control( p_demux->out, ES_OUT_SET_PCR, (int64_t)p_sys->i_pcr );
438 es_out_Send( p_demux->out, p_sys->tk[pkt.stream_index], p_frame );
440 UpdateSeekPoint( p_demux, p_sys->i_pcr);
441 av_free_packet( &pkt );
445 static void UpdateSeekPoint( demux_t *p_demux, int64_t i_time )
447 demux_sys_t *p_sys = p_demux->p_sys;
450 if( !p_sys->p_title )
453 for( i = 0; i < p_sys->p_title->i_seekpoint; i++ )
455 if( i_time < p_sys->p_title->seekpoint[i]->i_time_offset )
460 if( i != p_demux->info.i_seekpoint && i >= 0 )
462 p_demux->info.i_seekpoint = i;
463 p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
467 /*****************************************************************************
469 *****************************************************************************/
470 static int Control( demux_t *p_demux, int i_query, va_list args )
472 demux_sys_t *p_sys = p_demux->p_sys;
478 case DEMUX_GET_POSITION:
479 pf = (double*) va_arg( args, double* ); *pf = 0.0;
480 i64 = stream_Size( p_demux->s );
483 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
486 if( (p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
488 *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
493 case DEMUX_SET_POSITION:
494 f = (double) va_arg( args, double );
495 i64 = stream_Tell( p_demux->s );
496 if( p_sys->i_pcr > 0 )
498 i64 = p_sys->ic->duration * f;
499 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
500 i64 += p_sys->ic->start_time;
502 msg_Warn( p_demux, "DEMUX_SET_POSITION: %"PRId64, i64 );
504 /* If we have a duration, we prefer to seek by time
505 but if we don't, or if the seek fails, try BYTE seeking */
506 if( p_sys->ic->duration == (int64_t)AV_NOPTS_VALUE ||
507 (av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0) )
509 int64_t i_size = stream_Size( p_demux->s );
511 msg_Warn( p_demux, "DEMUX_SET_BYTE_POSITION: %"PRId64, i64 );
512 if( av_seek_frame( p_sys->ic, -1, (i_size * f), AVSEEK_FLAG_BYTE ) < 0 )
515 UpdateSeekPoint( p_demux, i64 );
516 p_sys->i_pcr = -1; /* Invalidate time display */
520 case DEMUX_GET_LENGTH:
521 pi64 = (int64_t*)va_arg( args, int64_t * );
522 if( p_sys->ic->duration != (int64_t)AV_NOPTS_VALUE )
524 *pi64 = p_sys->ic->duration;
530 pi64 = (int64_t*)va_arg( args, int64_t * );
531 *pi64 = p_sys->i_pcr;
535 i64 = (int64_t)va_arg( args, int64_t );
536 i64 = i64 *AV_TIME_BASE / 1000000;
537 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
538 i64 += p_sys->ic->start_time;
540 msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
542 if( av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0 )
546 p_sys->i_pcr = -1; /* Invalidate time display */
547 UpdateSeekPoint( p_demux, i64 );
550 case DEMUX_HAS_UNSUPPORTED_META:
552 bool *pb_bool = (bool*)va_arg( args, bool* );
560 vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
562 if( !p_sys->ic->title[0] || !p_sys->ic->author[0] ||
563 !p_sys->ic->copyright[0] || !p_sys->ic->comment[0] ||
564 /*!p_sys->ic->album[0] ||*/ !p_sys->ic->genre[0] )
569 if( p_sys->ic->title[0] )
570 vlc_meta_SetTitle( p_meta, p_sys->ic->title );
571 if( p_sys->ic->author[0] )
572 vlc_meta_SetArtist( p_meta, p_sys->ic->author );
573 if( p_sys->ic->copyright[0] )
574 vlc_meta_SetCopyright( p_meta, p_sys->ic->copyright );
575 if( p_sys->ic->comment[0] )
576 vlc_meta_SetDescription( p_meta, p_sys->ic->comment );
577 if( p_sys->ic->genre[0] )
578 vlc_meta_SetGenre( p_meta, p_sys->ic->genre );
582 case DEMUX_GET_ATTACHMENTS:
584 input_attachment_t ***ppp_attach =
585 (input_attachment_t***)va_arg( args, input_attachment_t*** );
586 int *pi_int = (int*)va_arg( args, int * );
589 if( p_sys->i_attachments <= 0 )
592 *pi_int = p_sys->i_attachments;;
593 *ppp_attach = malloc( sizeof(input_attachment_t**) * p_sys->i_attachments );
594 for( i = 0; i < p_sys->i_attachments; i++ )
595 (*ppp_attach)[i] = vlc_input_attachment_Duplicate( p_sys->attachments[i] );
599 case DEMUX_GET_TITLE_INFO:
601 input_title_t ***ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
602 int *pi_int = (int*)va_arg( args, int* );
603 int *pi_title_offset = (int*)va_arg( args, int* );
604 int *pi_seekpoint_offset = (int*)va_arg( args, int* );
606 if( !p_sys->p_title )
610 *ppp_title = malloc( sizeof( input_title_t**) );
611 (*ppp_title)[0] = vlc_input_title_Duplicate( p_sys->p_title );
612 *pi_title_offset = 0;
613 *pi_seekpoint_offset = 0;
616 case DEMUX_SET_TITLE:
618 const int i_title = (int)va_arg( args, int );
619 if( !p_sys->p_title || i_title != 0 )
623 case DEMUX_SET_SEEKPOINT:
625 const int i_seekpoint = (int)va_arg( args, int );
626 if( !p_sys->p_title )
629 i64 = p_sys->p_title->seekpoint[i_seekpoint]->i_time_offset *AV_TIME_BASE / 1000000;
630 if( p_sys->ic->start_time != (int64_t)AV_NOPTS_VALUE )
631 i64 += p_sys->ic->start_time;
633 msg_Warn( p_demux, "DEMUX_SET_TIME: %"PRId64, i64 );
635 if( av_seek_frame( p_sys->ic, -1, i64, 0 ) < 0 )
639 p_sys->i_pcr = -1; /* Invalidate time display */
640 UpdateSeekPoint( p_demux, i64 );
650 /*****************************************************************************
651 * I/O wrappers for libavformat
652 *****************************************************************************/
653 static int IORead( void *opaque, uint8_t *buf, int buf_size )
655 URLContext *p_url = opaque;
656 demux_t *p_demux = p_url->priv_data;
657 if( buf_size < 0 ) return -1;
658 int i_ret = stream_Read( p_demux->s, buf, buf_size );
659 return i_ret ? i_ret : -1;
662 static int64_t IOSeek( void *opaque, int64_t offset, int whence )
664 URLContext *p_url = opaque;
665 demux_t *p_demux = p_url->priv_data;
666 int64_t i_absolute = (int64_t)offset;
667 int64_t i_size = stream_Size( p_demux->s );
669 #ifdef AVFORMAT_DEBUG
670 msg_Warn( p_demux, "IOSeek offset: %"PRId64", whence: %i", offset, whence );
680 i_absolute = (int64_t)offset;
683 i_absolute = stream_Tell( p_demux->s ) + (int64_t)offset;
686 i_absolute = i_size + (int64_t)offset;
695 msg_Dbg( p_demux, "Trying to seek before the beginning" );
699 if( i_size > 0 && i_absolute >= i_size )
701 msg_Dbg( p_demux, "Trying to seek too far : EOF?" );
705 if( stream_Seek( p_demux->s, i_absolute ) )
707 msg_Warn( p_demux, "we were not allowed to seek, or EOF " );
711 return stream_Tell( p_demux->s );
714 #endif /* HAVE_LIBAVFORMAT_AVFORMAT_H */