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 "input_internal.h"
32 static bool SkipID3Tag( demux_t * );
33 static bool SkipAPETag( demux_t *p_demux );
35 /*****************************************************************************
37 * if s is NULL then load a access_demux
38 *****************************************************************************/
39 demux_t *__demux_New( vlc_object_t *p_obj,
40 const char *psz_access, const char *psz_demux,
42 stream_t *s, es_out_t *out, bool b_quick )
44 demux_t *p_demux = vlc_object_create( p_obj, VLC_OBJECT_DEMUX );
45 const char *psz_module;
47 if( p_demux == NULL ) return NULL;
50 p_demux->psz_access = strdup( psz_access );
51 p_demux->psz_demux = strdup( psz_demux );
52 p_demux->psz_path = strdup( psz_path );
54 /* Take into account "demux" to be able to do :demux=dump */
55 if( *p_demux->psz_demux == '\0' )
57 free( p_demux->psz_demux );
58 p_demux->psz_demux = var_GetNonEmptyString( p_obj, "demux" );
59 if( p_demux->psz_demux == NULL )
60 p_demux->psz_demux = strdup( "" );
65 msg_Dbg( p_obj, "creating demux: access='%s' demux='%s' path='%s'",
66 p_demux->psz_access, p_demux->psz_demux, p_demux->psz_path );
72 p_demux->pf_demux = NULL;
73 p_demux->pf_control = NULL;
74 p_demux->p_sys = NULL;
75 p_demux->info.i_update = 0;
76 p_demux->info.i_title = 0;
77 p_demux->info.i_seekpoint = 0;
79 if( s ) psz_module = p_demux->psz_demux;
80 else psz_module = p_demux->psz_access;
82 if( s && *psz_module == '\0' && strrchr( p_demux->psz_path, '.' ) )
84 /* XXX: add only file without any problem here and with strong detection.
85 * - no .mp3, .a52, ... (aac is added as it works only by file ext
87 * - wav can't be added 'cause of a52 and dts in them as raw audio
89 static const struct { char ext[5]; char demux[9]; } exttodemux[] =
93 { "asf", "asf" }, { "wmv", "asf" }, { "wma", "asf" },
98 { "m3u", "playlist" },
99 { "mkv", "mkv" }, { "mka", "mkv" }, { "mks", "mkv" },
100 { "mp4", "mp4" }, { "m4a", "mp4" }, { "mov", "mp4" }, { "moov", "mp4" },
101 { "mod", "mod" }, { "xm", "mod" },
103 { "ogg", "ogg" }, { "ogm", "ogg" },
110 /* Here, we don't mind if it does not work, it must be quick */
111 static const struct { char ext[4]; char demux[5]; } exttodemux_quick[] =
119 const char *psz_ext = strrchr( p_demux->psz_path, '.' ) + 1;
124 for( i = 0; exttodemux[i].ext[0]; i++ )
126 if( !strcasecmp( psz_ext, exttodemux[i].ext ) )
128 psz_module = exttodemux[i].demux;
135 for( i = 0; exttodemux_quick[i].ext[0]; i++ )
137 if( !strcasecmp( psz_ext, exttodemux_quick[i].ext ) )
139 psz_module = exttodemux_quick[i].demux;
147 /* Before module_Need (for var_Create...) */
148 vlc_object_attach( p_demux, p_obj );
152 /* ID3/APE tags will mess-up demuxer probing so we skip it here.
153 * ID3/APE parsers will called later on in the demuxer to access the
155 if( !SkipID3Tag( p_demux ) )
156 SkipAPETag( p_demux );
159 module_Need( p_demux, "demux", psz_module,
160 !strcmp( psz_module, p_demux->psz_demux ) ?
166 module_Need( p_demux, "access_demux", psz_module,
167 !strcmp( psz_module, p_demux->psz_access ) ?
171 if( p_demux->p_module == NULL )
173 vlc_object_detach( p_demux );
174 free( p_demux->psz_path );
175 free( p_demux->psz_demux );
176 free( p_demux->psz_access );
177 vlc_object_release( p_demux );
184 /*****************************************************************************
186 *****************************************************************************/
187 void demux_Delete( demux_t *p_demux )
189 module_Unneed( p_demux, p_demux->p_module );
190 vlc_object_detach( p_demux );
192 free( p_demux->psz_path );
193 free( p_demux->psz_demux );
194 free( p_demux->psz_access );
196 vlc_object_release( p_demux );
199 /*****************************************************************************
200 * demux_vaControlHelper:
201 *****************************************************************************/
202 int demux_vaControlHelper( stream_t *s,
203 int64_t i_start, int64_t i_end,
204 int i_bitrate, int i_align,
205 int i_query, va_list args )
211 if( i_end < 0 ) i_end = stream_Size( s );
212 if( i_start < 0 ) i_start = 0;
213 if( i_align <= 0 ) i_align = 1;
214 i_tell = stream_Tell( s );
218 case DEMUX_GET_LENGTH:
219 pi64 = (int64_t*)va_arg( args, int64_t * );
220 if( i_bitrate > 0 && i_end > i_start )
222 *pi64 = INT64_C(8000000) * (i_end - i_start) / i_bitrate;
228 pi64 = (int64_t*)va_arg( args, int64_t * );
229 if( i_bitrate > 0 && i_end > i_start )
231 *pi64 = INT64_C(8000000) * (i_tell - i_start) / i_bitrate;
236 case DEMUX_GET_POSITION:
237 pf = (double*)va_arg( args, double * );
238 if( i_start < i_end )
240 *pf = (double)( i_tell - i_start ) /
241 (double)( i_end - i_start );
247 case DEMUX_SET_POSITION:
248 f = (double)va_arg( args, double );
249 if( i_start < i_end && f >= 0.0 && f <= 1.0 )
251 int64_t i_block = (f * ( i_end - i_start )) / i_align;
253 if( stream_Seek( s, i_start + i_block * i_align ) )
262 i64 = (int64_t)va_arg( args, int64_t );
263 if( i_bitrate > 0 && i64 >= 0 )
265 int64_t i_block = i64 * i_bitrate / INT64_C(8000000) / i_align;
266 if( stream_Seek( s, i_start + i_block * i_align ) )
276 case DEMUX_HAS_UNSUPPORTED_META:
277 case DEMUX_SET_NEXT_DEMUX_TIME:
278 case DEMUX_GET_TITLE_INFO:
279 case DEMUX_SET_GROUP:
280 case DEMUX_GET_ATTACHMENTS:
284 msg_Err( s, "unknown query in demux_vaControlDefault" );
289 /****************************************************************************
290 * stream_Demux*: create a demuxer for an outpout stream (allow demuxer chain)
291 ****************************************************************************/
295 block_fifo_t *p_fifo;
307 static int DStreamRead ( stream_t *, void *p_read, int i_read );
308 static int DStreamPeek ( stream_t *, const uint8_t **pp_peek, int i_peek );
309 static int DStreamControl( stream_t *, int i_query, va_list );
310 static int DStreamThread ( stream_t * );
313 stream_t *__stream_DemuxNew( vlc_object_t *p_obj, const char *psz_demux,
316 /* We create a stream reader, and launch a thread */
318 d_stream_sys_t *p_sys;
320 if( psz_demux == NULL || *psz_demux == '\0' ) return NULL;
322 s = vlc_stream_create( p_obj );
323 s->pf_read = DStreamRead;
324 s->pf_peek = DStreamPeek;
325 s->pf_control= DStreamControl;
328 s->b_little_endian = false;
330 s->p_sys = malloc( sizeof( d_stream_sys_t) );
331 p_sys = (d_stream_sys_t*)s->p_sys;
335 p_sys->p_demux = NULL;
336 p_sys->p_block = NULL;
337 p_sys->psz_name = strdup( psz_demux );
340 if( ( p_sys->p_fifo = block_FifoNew() ) == NULL )
342 msg_Err( s, "out of memory" );
343 vlc_object_release( s );
348 if( vlc_thread_create( s, "stream out", DStreamThread,
349 VLC_THREAD_PRIORITY_INPUT, false ) )
351 vlc_object_release( s );
359 void stream_DemuxSend( stream_t *s, block_t *p_block )
361 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
362 if( p_block ) block_FifoPut( p_sys->p_fifo, p_block );
365 void stream_DemuxDelete( stream_t *s )
367 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
370 vlc_object_kill( s );
372 vlc_object_kill( p_sys->p_demux );
373 p_empty = block_New( s, 1 ); p_empty->i_buffer = 0;
374 block_FifoPut( p_sys->p_fifo, p_empty );
375 vlc_thread_join( s );
377 if( p_sys->p_demux ) demux_Delete( p_sys->p_demux );
378 if( p_sys->p_block ) block_Release( p_sys->p_block );
380 block_FifoRelease( p_sys->p_fifo );
381 free( p_sys->psz_name );
384 vlc_object_release( s );
388 static int DStreamRead( stream_t *s, void *p_read, int i_read )
390 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
391 uint8_t *p_out = p_read;
394 //msg_Dbg( s, "DStreamRead: wanted %d bytes", i_read );
396 while( !s->b_die && !s->b_error && i_read )
398 block_t *p_block = p_sys->p_block;
403 p_block = block_FifoGet( p_sys->p_fifo );
404 if( !p_block ) s->b_error = 1;
405 p_sys->p_block = p_block;
408 if( p_block && i_read )
410 i_copy = __MIN( i_read, p_block->i_buffer );
411 if( p_out && i_copy ) memcpy( p_out, p_block->p_buffer, i_copy );
414 p_block->i_buffer -= i_copy;
415 p_block->p_buffer += i_copy;
417 if( !p_block->i_buffer )
419 block_Release( p_block );
420 p_sys->p_block = NULL;
425 p_sys->i_pos += i_out;
429 static int DStreamPeek( stream_t *s, const uint8_t **pp_peek, int i_peek )
431 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
432 block_t **pp_block = &p_sys->p_block;
436 //msg_Dbg( s, "DStreamPeek: wanted %d bytes", i_peek );
438 while( !s->b_die && !s->b_error && i_peek )
444 *pp_block = block_FifoGet( p_sys->p_fifo );
445 if( !*pp_block ) s->b_error = 1;
448 if( *pp_block && i_peek )
450 i_copy = __MIN( i_peek, (*pp_block)->i_buffer );
454 if( i_peek ) pp_block = &(*pp_block)->p_next;
460 p_sys->p_block = block_ChainGather( p_sys->p_block );
461 *pp_peek = p_sys->p_block->p_buffer;
467 static int DStreamControl( stream_t *s, int i_query, va_list args )
469 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
476 case STREAM_GET_SIZE:
477 p_i64 = (int64_t*) va_arg( args, int64_t * );
481 case STREAM_CAN_SEEK:
482 p_b = (bool*) va_arg( args, bool * );
486 case STREAM_CAN_FASTSEEK:
487 p_b = (bool*) va_arg( args, bool * );
491 case STREAM_GET_POSITION:
492 p_i64 = (int64_t*) va_arg( args, int64_t * );
493 *p_i64 = p_sys->i_pos;
496 case STREAM_SET_POSITION:
498 int64_t i64 = (int64_t)va_arg( args, int64_t );
500 if( i64 < p_sys->i_pos ) return VLC_EGENERIC;
501 i_skip = i64 - p_sys->i_pos;
505 int i_read = DStreamRead( s, NULL, i_skip );
506 if( i_read <= 0 ) return VLC_EGENERIC;
513 p_int = (int*) va_arg( args, int * );
517 case STREAM_CONTROL_ACCESS:
518 case STREAM_GET_CONTENT_TYPE:
522 msg_Err( s, "invalid DStreamControl query=0x%x", i_query );
527 static int DStreamThread( stream_t *s )
529 d_stream_sys_t *p_sys = (d_stream_sys_t*)s->p_sys;
532 /* Create the demuxer */
533 if( !(p_demux = demux_New( s, "", p_sys->psz_name, "", s, p_sys->out,
539 p_sys->p_demux = p_demux;
542 while( !s->b_die && !p_demux->b_die )
544 if( p_demux->pf_demux( p_demux ) <= 0 ) break;
547 vlc_object_kill( p_demux );
551 /****************************************************************************
553 ****************************************************************************/
554 static bool SkipID3Tag( demux_t *p_demux )
556 const uint8_t *p_peek;
557 uint8_t version, revision;
564 /* Get 10 byte id3 header */
565 if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
568 if( memcmp( p_peek, "ID3", 3 ) )
572 revision = p_peek[4];
573 b_footer = p_peek[5] & 0x10;
574 i_size = (p_peek[6]<<21) + (p_peek[7]<<14) + (p_peek[8]<<7) + p_peek[9];
576 if( b_footer ) i_size += 10;
579 /* Skip the entire tag */
580 stream_Read( p_demux->s, NULL, i_size );
582 msg_Dbg( p_demux, "ID3v2.%d revision %d tag found, skipping %d bytes",
583 version, revision, i_size );
586 static bool SkipAPETag( demux_t *p_demux )
588 const uint8_t *p_peek;
596 /* Get 32 byte ape header */
597 if( stream_Peek( p_demux->s, &p_peek, 32 ) < 32 )
600 if( memcmp( p_peek, "APETAGEX", 8 ) )
603 i_version = GetDWLE( &p_peek[8] );
604 flags = GetDWLE( &p_peek[8+4+4] );
605 if( ( i_version != 1000 && i_version != 2000 ) || !( flags & (1<<29) ) )
608 i_size = GetDWLE( &p_peek[8+4] ) + ( (flags&(1<<30)) ? 32 : 0 );
610 /* Skip the entire tag */
611 stream_Read( p_demux->s, NULL, i_size );
613 msg_Dbg( p_demux, "AP2 v%d tag found, skipping %d bytes",
614 i_version/1000, i_size );