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>
34 static bool SkipID3Tag( demux_t * );
35 static bool SkipAPETag( demux_t *p_demux );
37 /* Decode URL (which has had its scheme stripped earlier) to a file path. */
38 /* XXX: evil code duplication from access.c */
39 static char *get_path(const char *location)
43 /* Prepending "file://" is a bit hackish. But then again, we do not want
44 * to hard-code the list of schemes that use file paths in make_path().
46 if (asprintf(&url, "file://%s", location) == -1)
49 path = make_path (url);
55 /*****************************************************************************
57 * if s is NULL then load a access_demux
58 *****************************************************************************/
59 demux_t *__demux_New( vlc_object_t *p_obj, input_thread_t *p_parent_input,
60 const char *psz_access, const char *psz_demux,
61 const char *psz_location,
62 stream_t *s, es_out_t *out, bool b_quick )
64 static const char typename[] = "demux";
65 demux_t *p_demux = vlc_custom_create( p_obj, sizeof( *p_demux ),
66 VLC_OBJECT_GENERIC, typename );
67 const char *psz_module;
69 if( p_demux == NULL ) return NULL;
71 p_demux->p_input = p_parent_input;
74 p_demux->psz_access = strdup( psz_access );
75 p_demux->psz_demux = strdup( psz_demux );
76 p_demux->psz_location = strdup( psz_location );
77 p_demux->psz_file = get_path( psz_location );
79 /* Take into account "demux" to be able to do :demux=dump */
80 if( p_demux->psz_demux && *p_demux->psz_demux == '\0' )
82 free( p_demux->psz_demux );
83 p_demux->psz_demux = var_GetNonEmptyString( p_obj, "demux" );
84 if( p_demux->psz_demux == NULL )
85 p_demux->psz_demux = strdup( "" );
89 msg_Dbg( p_obj, "creating demux: access='%s' demux='%s' "
90 "location='%s' file='%s'",
91 p_demux->psz_access, p_demux->psz_demux,
92 p_demux->psz_location, p_demux->psz_file );
97 p_demux->pf_demux = NULL;
98 p_demux->pf_control = NULL;
99 p_demux->p_sys = NULL;
100 p_demux->info.i_update = 0;
101 p_demux->info.i_title = 0;
102 p_demux->info.i_seekpoint = 0;
104 if( s ) psz_module = p_demux->psz_demux;
105 else psz_module = p_demux->psz_access;
109 if( s && *psz_module == '\0'
110 && p_demux->psz_file != NULL
111 && (psz_ext = strrchr( p_demux->psz_file, '.' )) )
113 /* XXX: add only file without any problem here and with strong detection.
114 * - no .mp3, .a52, ... (aac is added as it works only by file ext
116 * - wav can't be added 'cause of a52 and dts in them as raw audio
118 static const struct { char ext[5]; char demux[9]; } exttodemux[] =
122 { "asf", "asf" }, { "wmv", "asf" }, { "wma", "asf" },
130 { "mkv", "mkv" }, { "mka", "mkv" }, { "mks", "mkv" },
131 { "mp4", "mp4" }, { "m4a", "mp4" }, { "mov", "mp4" }, { "moov", "mp4" },
133 { "ogg", "ogg" }, { "ogm", "ogg" }, /* legacy Ogg */
134 { "oga", "ogg" }, { "spx", "ogg" }, { "ogv", "ogg" },
135 { "ogx", "ogg" }, /*RFC5334*/
141 { "mid", "smf" }, { "rmi", "smf" },
144 /* Here, we don't mind if it does not work, it must be quick */
145 static const struct { char ext[4]; char demux[5]; } exttodemux_quick[] =
153 psz_ext++; // skip '.'
157 for( unsigned i = 0; exttodemux[i].ext[0]; i++ )
159 if( !strcasecmp( psz_ext, exttodemux[i].ext ) )
161 psz_module = exttodemux[i].demux;
168 for( unsigned i = 0; exttodemux_quick[i].ext[0]; i++ )
170 if( !strcasecmp( psz_ext, exttodemux_quick[i].ext ) )
172 psz_module = exttodemux_quick[i].demux;
180 /* Before module_need (for var_Create...) */
181 vlc_object_attach( p_demux, p_obj );
185 /* ID3/APE tags will mess-up demuxer probing so we skip it here.
186 * ID3/APE parsers will called later on in the demuxer to access the
188 if( !SkipID3Tag( p_demux ) )
189 SkipAPETag( p_demux );
192 module_need( p_demux, "demux", psz_module,
193 !strcmp( psz_module, p_demux->psz_demux ) );
198 module_need( p_demux, "access_demux", psz_module,
199 !strcmp( psz_module, p_demux->psz_access ) );
202 if( p_demux->p_module == NULL )
204 free( p_demux->psz_file );
205 free( p_demux->psz_location );
206 free( p_demux->psz_demux );
207 free( p_demux->psz_access );
208 vlc_object_release( p_demux );
215 /*****************************************************************************
217 *****************************************************************************/
218 void demux_Delete( demux_t *p_demux )
220 module_unneed( p_demux, p_demux->p_module );
222 free( p_demux->psz_file );
223 free( p_demux->psz_location );
224 free( p_demux->psz_demux );
225 free( p_demux->psz_access );
227 vlc_object_release( p_demux );
230 /*****************************************************************************
231 * demux_GetParentInput:
232 *****************************************************************************/
233 input_thread_t * demux_GetParentInput( demux_t *p_demux )
235 return p_demux->p_input ? vlc_object_hold((vlc_object_t*)p_demux->p_input) : NULL;
239 /*****************************************************************************
240 * demux_vaControlHelper:
241 *****************************************************************************/
242 int demux_vaControlHelper( stream_t *s,
243 int64_t i_start, int64_t i_end,
244 int64_t i_bitrate, int i_align,
245 int i_query, va_list args )
251 if( i_end < 0 ) i_end = stream_Size( s );
252 if( i_start < 0 ) i_start = 0;
253 if( i_align <= 0 ) i_align = 1;
254 i_tell = stream_Tell( s );
258 case DEMUX_GET_LENGTH:
259 pi64 = (int64_t*)va_arg( args, int64_t * );
260 if( i_bitrate > 0 && i_end > i_start )
262 *pi64 = INT64_C(8000000) * (i_end - i_start) / i_bitrate;
268 pi64 = (int64_t*)va_arg( args, int64_t * );
269 if( i_bitrate > 0 && i_tell >= i_start )
271 *pi64 = INT64_C(8000000) * (i_tell - i_start) / i_bitrate;
276 case DEMUX_GET_POSITION:
277 pf = (double*)va_arg( args, double * );
278 if( i_start < i_end )
280 *pf = (double)( i_tell - i_start ) /
281 (double)( i_end - i_start );
287 case DEMUX_SET_POSITION:
288 f = (double)va_arg( args, double );
289 if( i_start < i_end && f >= 0.0 && f <= 1.0 )
291 int64_t i_block = (f * ( i_end - i_start )) / i_align;
293 if( stream_Seek( s, i_start + i_block * i_align ) )
302 i64 = (int64_t)va_arg( args, int64_t );
303 if( i_bitrate > 0 && i64 >= 0 )
305 int64_t i_block = i64 * i_bitrate / INT64_C(8000000) / i_align;
306 if( stream_Seek( s, i_start + i_block * i_align ) )
316 case DEMUX_HAS_UNSUPPORTED_META:
317 case DEMUX_SET_NEXT_DEMUX_TIME:
318 case DEMUX_GET_TITLE_INFO:
319 case DEMUX_SET_GROUP:
320 case DEMUX_GET_ATTACHMENTS:
321 case DEMUX_CAN_RECORD:
322 case DEMUX_SET_RECORD_STATE:
326 msg_Err( s, "unknown query in demux_vaControlDefault" );
331 /****************************************************************************
333 ****************************************************************************/
334 decoder_t *demux_PacketizerNew( demux_t *p_demux, es_format_t *p_fmt, const char *psz_msg )
336 decoder_t *p_packetizer;
337 p_packetizer = vlc_custom_create( p_demux, sizeof( *p_packetizer ),
338 VLC_OBJECT_GENERIC, "demux packetizer" );
341 es_format_Clean( p_fmt );
344 p_fmt->b_packetized = false;
346 p_packetizer->pf_decode_audio = NULL;
347 p_packetizer->pf_decode_video = NULL;
348 p_packetizer->pf_decode_sub = NULL;
349 p_packetizer->pf_packetize = NULL;
351 p_packetizer->fmt_in = *p_fmt;
352 es_format_Init( &p_packetizer->fmt_out, UNKNOWN_ES, 0 );
354 vlc_object_attach( p_packetizer, p_demux );
355 p_packetizer->p_module = module_need( p_packetizer, "packetizer", NULL, false );
356 if( !p_packetizer->p_module )
358 es_format_Clean( p_fmt );
359 vlc_object_release( p_packetizer );
360 msg_Err( p_demux, "cannot find packetizer for %s", psz_msg );
367 void demux_PacketizerDestroy( decoder_t *p_packetizer )
369 if( p_packetizer->p_module )
370 module_unneed( p_packetizer, p_packetizer->p_module );
371 es_format_Clean( &p_packetizer->fmt_in );
372 if( p_packetizer->p_description )
373 vlc_meta_Delete( p_packetizer->p_description );
374 vlc_object_release( p_packetizer );
377 static bool SkipID3Tag( demux_t *p_demux )
379 const uint8_t *p_peek;
380 uint8_t version, revision;
387 /* Get 10 byte id3 header */
388 if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
391 if( memcmp( p_peek, "ID3", 3 ) )
395 revision = p_peek[4];
396 b_footer = p_peek[5] & 0x10;
397 i_size = (p_peek[6]<<21) + (p_peek[7]<<14) + (p_peek[8]<<7) + p_peek[9];
399 if( b_footer ) i_size += 10;
402 /* Skip the entire tag */
403 stream_Read( p_demux->s, NULL, i_size );
405 msg_Dbg( p_demux, "ID3v2.%d revision %d tag found, skipping %d bytes",
406 version, revision, i_size );
409 static bool SkipAPETag( demux_t *p_demux )
411 const uint8_t *p_peek;
419 /* Get 32 byte ape header */
420 if( stream_Peek( p_demux->s, &p_peek, 32 ) < 32 )
423 if( memcmp( p_peek, "APETAGEX", 8 ) )
426 i_version = GetDWLE( &p_peek[8] );
427 flags = GetDWLE( &p_peek[8+4+4] );
428 if( ( i_version != 1000 && i_version != 2000 ) || !( flags & (1<<29) ) )
431 i_size = GetDWLE( &p_peek[8+4] ) + ( (flags&(1<<30)) ? 32 : 0 );
433 /* Skip the entire tag */
434 stream_Read( p_demux->s, NULL, i_size );
436 msg_Dbg( p_demux, "AP2 v%d tag found, skipping %d bytes",
437 i_version/1000, i_size );