1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 1999-2004 the VideoLAN team
7 * Author: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
30 #include <vlc_codec.h>
33 static bool SkipID3Tag( demux_t * );
34 static bool SkipAPETag( demux_t *p_demux );
36 /*****************************************************************************
38 * if s is NULL then load a access_demux
39 *****************************************************************************/
40 demux_t *__demux_New( vlc_object_t *p_obj,
41 const char *psz_access, const char *psz_demux,
43 stream_t *s, es_out_t *out, bool b_quick )
45 static const char typename[] = "demux";
46 demux_t *p_demux = vlc_custom_create( p_obj, sizeof( *p_demux ),
47 VLC_OBJECT_GENERIC, typename );
48 const char *psz_module;
50 if( p_demux == NULL ) return NULL;
53 p_demux->psz_access = strdup( psz_access );
54 p_demux->psz_demux = strdup( psz_demux );
55 p_demux->psz_path = strdup( psz_path );
57 /* Take into account "demux" to be able to do :demux=dump */
58 if( p_demux->psz_demux && *p_demux->psz_demux == '\0' )
60 free( p_demux->psz_demux );
61 p_demux->psz_demux = var_GetNonEmptyString( p_obj, "demux" );
62 if( p_demux->psz_demux == NULL )
63 p_demux->psz_demux = strdup( "" );
68 msg_Dbg( p_obj, "creating demux: access='%s' demux='%s' path='%s'",
69 p_demux->psz_access, p_demux->psz_demux, p_demux->psz_path );
75 p_demux->pf_demux = NULL;
76 p_demux->pf_control = NULL;
77 p_demux->p_sys = NULL;
78 p_demux->info.i_update = 0;
79 p_demux->info.i_title = 0;
80 p_demux->info.i_seekpoint = 0;
82 if( s ) psz_module = p_demux->psz_demux;
83 else psz_module = p_demux->psz_access;
85 if( s && *psz_module == '\0' && strrchr( p_demux->psz_path, '.' ) )
87 /* XXX: add only file without any problem here and with strong detection.
88 * - no .mp3, .a52, ... (aac is added as it works only by file ext
90 * - wav can't be added 'cause of a52 and dts in them as raw audio
92 static const struct { char ext[5]; char demux[9]; } exttodemux[] =
96 { "asf", "asf" }, { "wmv", "asf" }, { "wma", "asf" },
101 { "m3u", "playlist" },
102 { "mkv", "mkv" }, { "mka", "mkv" }, { "mks", "mkv" },
103 { "mp4", "mp4" }, { "m4a", "mp4" }, { "mov", "mp4" }, { "moov", "mp4" },
104 { "mod", "mod" }, { "xm", "mod" },
106 { "ogg", "ogg" }, { "ogm", "ogg" },
116 /* Here, we don't mind if it does not work, it must be quick */
117 static const struct { char ext[4]; char demux[5]; } exttodemux_quick[] =
125 const char *psz_ext = strrchr( p_demux->psz_path, '.' ) + 1;
130 for( i = 0; exttodemux[i].ext[0]; i++ )
132 if( !strcasecmp( psz_ext, exttodemux[i].ext ) )
134 psz_module = exttodemux[i].demux;
141 for( i = 0; exttodemux_quick[i].ext[0]; i++ )
143 if( !strcasecmp( psz_ext, exttodemux_quick[i].ext ) )
145 psz_module = exttodemux_quick[i].demux;
153 /* Before module_need (for var_Create...) */
154 vlc_object_attach( p_demux, p_obj );
158 /* ID3/APE tags will mess-up demuxer probing so we skip it here.
159 * ID3/APE parsers will called later on in the demuxer to access the
161 if( !SkipID3Tag( p_demux ) )
162 SkipAPETag( p_demux );
165 module_need( p_demux, "demux", psz_module,
166 !strcmp( psz_module, p_demux->psz_demux ) ?
172 module_need( p_demux, "access_demux", psz_module,
173 !strcmp( psz_module, p_demux->psz_access ) ?
177 if( p_demux->p_module == NULL )
179 vlc_object_detach( p_demux );
180 free( p_demux->psz_path );
181 free( p_demux->psz_demux );
182 free( p_demux->psz_access );
183 vlc_object_release( p_demux );
190 /*****************************************************************************
192 *****************************************************************************/
193 void demux_Delete( demux_t *p_demux )
195 module_unneed( p_demux, p_demux->p_module );
196 vlc_object_detach( p_demux );
198 free( p_demux->psz_path );
199 free( p_demux->psz_demux );
200 free( p_demux->psz_access );
202 vlc_object_release( p_demux );
205 /*****************************************************************************
206 * demux_vaControlHelper:
207 *****************************************************************************/
208 int demux_vaControlHelper( stream_t *s,
209 int64_t i_start, int64_t i_end,
210 int64_t i_bitrate, int i_align,
211 int i_query, va_list args )
217 if( i_end < 0 ) i_end = stream_Size( s );
218 if( i_start < 0 ) i_start = 0;
219 if( i_align <= 0 ) i_align = 1;
220 i_tell = stream_Tell( s );
224 case DEMUX_GET_LENGTH:
225 pi64 = (int64_t*)va_arg( args, int64_t * );
226 if( i_bitrate > 0 && i_end > i_start )
228 *pi64 = INT64_C(8000000) * (i_end - i_start) / i_bitrate;
234 pi64 = (int64_t*)va_arg( args, int64_t * );
235 if( i_bitrate > 0 && i_end > i_start )
237 *pi64 = INT64_C(8000000) * (i_tell - i_start) / i_bitrate;
242 case DEMUX_GET_POSITION:
243 pf = (double*)va_arg( args, double * );
244 if( i_start < i_end )
246 *pf = (double)( i_tell - i_start ) /
247 (double)( i_end - i_start );
253 case DEMUX_SET_POSITION:
254 f = (double)va_arg( args, double );
255 if( i_start < i_end && f >= 0.0 && f <= 1.0 )
257 int64_t i_block = (f * ( i_end - i_start )) / i_align;
259 if( stream_Seek( s, i_start + i_block * i_align ) )
268 i64 = (int64_t)va_arg( args, int64_t );
269 if( i_bitrate > 0 && i64 >= 0 )
271 int64_t i_block = i64 * i_bitrate / INT64_C(8000000) / i_align;
272 if( stream_Seek( s, i_start + i_block * i_align ) )
282 case DEMUX_HAS_UNSUPPORTED_META:
283 case DEMUX_SET_NEXT_DEMUX_TIME:
284 case DEMUX_GET_TITLE_INFO:
285 case DEMUX_SET_GROUP:
286 case DEMUX_GET_ATTACHMENTS:
287 case DEMUX_CAN_RECORD:
288 case DEMUX_SET_RECORD_STATE:
292 msg_Err( s, "unknown query in demux_vaControlDefault" );
297 /****************************************************************************
298 * stream_Demux*: create a demuxer for an outpout stream (allow demuxer chain)
299 ****************************************************************************/
303 block_fifo_t *p_fifo;
315 static int DStreamRead ( stream_t *, void *p_read, unsigned int i_read );
316 static int DStreamPeek ( stream_t *, const uint8_t **pp_peek, unsigned int i_peek );
317 static int DStreamControl( stream_t *, int i_query, va_list );
318 static void* DStreamThread ( vlc_object_t * );
321 stream_t *__stream_DemuxNew( vlc_object_t *p_obj, const char *psz_demux,
324 /* We create a stream reader, and launch a thread */
326 d_stream_sys_t *p_sys;
328 s = stream_CommonNew( p_obj );
331 s->pf_read = DStreamRead;
332 s->pf_peek = DStreamPeek;
333 s->pf_control= DStreamControl;
336 s->b_little_endian = false;
338 s->p_sys = malloc( sizeof( d_stream_sys_t) );
339 if( s->p_sys == NULL )
341 vlc_object_release( s );
344 p_sys = (d_stream_sys_t*)s->p_sys;
348 p_sys->p_demux = NULL;
349 p_sys->p_block = NULL;
350 p_sys->psz_name = strdup( psz_demux );
353 if( ( p_sys->p_fifo = block_FifoNew() ) == NULL )
355 vlc_object_release( s );
356 free( p_sys->psz_name );
361 if( vlc_thread_create( s, "stream out", DStreamThread,
362 VLC_THREAD_PRIORITY_INPUT, false ) )
364 vlc_object_release( s );
365 free( p_sys->psz_name );
373 void stream_DemuxSend( stream_t *s, block_t *p_block )
375 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
376 if( p_block ) block_FifoPut( p_sys->p_fifo, p_block );
379 void stream_DemuxDelete( stream_t *s )
381 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
384 vlc_object_kill( s );
386 vlc_object_kill( p_sys->p_demux );
387 p_empty = block_New( s, 1 ); p_empty->i_buffer = 0;
388 block_FifoPut( p_sys->p_fifo, p_empty );
389 vlc_thread_join( s );
391 if( p_sys->p_demux ) demux_Delete( p_sys->p_demux );
392 if( p_sys->p_block ) block_Release( p_sys->p_block );
394 block_FifoRelease( p_sys->p_fifo );
395 free( p_sys->psz_name );
398 vlc_object_release( s );
402 static int DStreamRead( stream_t *s, void *p_read, unsigned int i_read )
404 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
405 uint8_t *p_out = p_read;
408 //msg_Dbg( s, "DStreamRead: wanted %d bytes", i_read );
410 while( !s->b_die && !s->b_error && i_read )
412 block_t *p_block = p_sys->p_block;
417 p_block = block_FifoGet( p_sys->p_fifo );
418 if( !p_block ) s->b_error = 1;
419 p_sys->p_block = p_block;
422 if( p_block && i_read )
424 i_copy = __MIN( i_read, p_block->i_buffer );
425 if( p_out && i_copy ) memcpy( p_out, p_block->p_buffer, i_copy );
428 p_block->i_buffer -= i_copy;
429 p_block->p_buffer += i_copy;
431 if( !p_block->i_buffer )
433 block_Release( p_block );
434 p_sys->p_block = NULL;
439 p_sys->i_pos += i_out;
443 static int DStreamPeek( stream_t *s, const uint8_t **pp_peek, unsigned int i_peek )
445 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
446 block_t **pp_block = &p_sys->p_block;
450 //msg_Dbg( s, "DStreamPeek: wanted %d bytes", i_peek );
452 while( !s->b_die && !s->b_error && i_peek )
458 *pp_block = block_FifoGet( p_sys->p_fifo );
459 if( !*pp_block ) s->b_error = 1;
462 if( *pp_block && i_peek )
464 i_copy = __MIN( i_peek, (*pp_block)->i_buffer );
468 if( i_peek ) pp_block = &(*pp_block)->p_next;
474 p_sys->p_block = block_ChainGather( p_sys->p_block );
475 *pp_peek = p_sys->p_block->p_buffer;
481 static int DStreamControl( stream_t *s, int i_query, va_list args )
483 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
490 case STREAM_GET_SIZE:
491 p_i64 = (int64_t*) va_arg( args, int64_t * );
495 case STREAM_CAN_SEEK:
496 p_b = (bool*) va_arg( args, bool * );
500 case STREAM_CAN_FASTSEEK:
501 p_b = (bool*) va_arg( args, bool * );
505 case STREAM_GET_POSITION:
506 p_i64 = (int64_t*) va_arg( args, int64_t * );
507 *p_i64 = p_sys->i_pos;
510 case STREAM_SET_POSITION:
512 int64_t i64 = (int64_t)va_arg( args, int64_t );
514 if( i64 < p_sys->i_pos ) return VLC_EGENERIC;
515 i_skip = i64 - p_sys->i_pos;
519 int i_read = DStreamRead( s, NULL, (long)i_skip );
520 if( i_read <= 0 ) return VLC_EGENERIC;
527 p_int = (int*) va_arg( args, int * );
531 case STREAM_CONTROL_ACCESS:
532 case STREAM_GET_CONTENT_TYPE:
533 case STREAM_SET_RECORD_STATE:
537 msg_Err( s, "invalid DStreamControl query=0x%x", i_query );
542 static void* DStreamThread( vlc_object_t* p_this )
544 stream_t *s = (stream_t *)p_this;
545 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
547 int canc = vlc_savecancel();
549 /* Create the demuxer */
550 if( !(p_demux = demux_New( s, "", p_sys->psz_name, "", s, p_sys->out,
556 p_sys->p_demux = p_demux;
559 while( !s->b_die && !p_demux->b_die )
561 if( demux_Demux( p_demux ) <= 0 ) break;
564 vlc_restorecancel( canc );
565 vlc_object_kill( p_demux );
569 /****************************************************************************
571 ****************************************************************************/
572 decoder_t *demux_PacketizerNew( demux_t *p_demux, es_format_t *p_fmt, const char *psz_msg )
574 decoder_t *p_packetizer = vlc_object_create( p_demux, VLC_OBJECT_PACKETIZER );
578 es_format_Clean( p_fmt );
582 p_packetizer->pf_decode_audio = NULL;
583 p_packetizer->pf_decode_video = NULL;
584 p_packetizer->pf_decode_sub = NULL;
585 p_packetizer->pf_packetize = NULL;
587 p_packetizer->fmt_in = *p_fmt;
588 es_format_Init( &p_packetizer->fmt_out, UNKNOWN_ES, 0 );
590 p_packetizer->p_module = module_need( p_packetizer, "packetizer", NULL, 0 );
591 if( !p_packetizer->p_module )
593 es_format_Clean( p_fmt );
594 vlc_object_release( p_packetizer );
595 msg_Err( p_demux, "cannot find packetizer for %s", psz_msg );
601 void demux_PacketizerDestroy( decoder_t *p_packetizer )
603 if( p_packetizer->p_module )
604 module_unneed( p_packetizer, p_packetizer->p_module );
605 es_format_Clean( &p_packetizer->fmt_in );
606 if( p_packetizer->p_description )
607 vlc_meta_Delete( p_packetizer->p_description );
608 vlc_object_release( p_packetizer );
611 static bool SkipID3Tag( demux_t *p_demux )
613 const uint8_t *p_peek;
614 uint8_t version, revision;
621 /* Get 10 byte id3 header */
622 if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
625 if( memcmp( p_peek, "ID3", 3 ) )
629 revision = p_peek[4];
630 b_footer = p_peek[5] & 0x10;
631 i_size = (p_peek[6]<<21) + (p_peek[7]<<14) + (p_peek[8]<<7) + p_peek[9];
633 if( b_footer ) i_size += 10;
636 /* Skip the entire tag */
637 stream_Read( p_demux->s, NULL, i_size );
639 msg_Dbg( p_demux, "ID3v2.%d revision %d tag found, skipping %d bytes",
640 version, revision, i_size );
643 static bool SkipAPETag( demux_t *p_demux )
645 const uint8_t *p_peek;
653 /* Get 32 byte ape header */
654 if( stream_Peek( p_demux->s, &p_peek, 32 ) < 32 )
657 if( memcmp( p_peek, "APETAGEX", 8 ) )
660 i_version = GetDWLE( &p_peek[8] );
661 flags = GetDWLE( &p_peek[8+4+4] );
662 if( ( i_version != 1000 && i_version != 2000 ) || !( flags & (1<<29) ) )
665 i_size = GetDWLE( &p_peek[8+4] ) + ( (flags&(1<<30)) ? 32 : 0 );
667 /* Skip the entire tag */
668 stream_Read( p_demux->s, NULL, i_size );
670 msg_Dbg( p_demux, "AP2 v%d tag found, skipping %d bytes",
671 i_version/1000, i_size );