1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 1999-2004 VLC authors and VideoLAN
7 * Author: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
30 #include <vlc_codec.h>
33 #include <vlc_modules.h>
35 static bool SkipID3Tag( demux_t * );
36 static bool SkipAPETag( demux_t *p_demux );
38 /* Decode URL (which has had its scheme stripped earlier) to a file path. */
39 /* XXX: evil code duplication from access.c */
40 static char *get_path(const char *location)
44 /* Prepending "file://" is a bit hackish. But then again, we do not want
45 * to hard-code the list of schemes that use file paths in make_path().
47 if (asprintf(&url, "file://%s", location) == -1)
50 path = make_path (url);
56 /*****************************************************************************
58 * if s is NULL then load a access_demux
59 *****************************************************************************/
60 demux_t *demux_New( vlc_object_t *p_obj, input_thread_t *p_parent_input,
61 const char *psz_access, const char *psz_demux,
62 const char *psz_location,
63 stream_t *s, es_out_t *out, bool b_quick )
65 demux_t *p_demux = vlc_custom_create( p_obj, sizeof( *p_demux ), "demux" );
66 if( unlikely(p_demux == NULL) )
69 p_demux->p_input = p_parent_input;
70 p_demux->psz_access = strdup( psz_access );
72 if( psz_demux[0] == '\0' )
73 /* Take into account "demux" to be able to do :demux=dump */
74 p_demux->psz_demux = var_InheritString( p_obj, "demux" );
76 p_demux->psz_demux = strdup( psz_demux );
78 p_demux->psz_location = strdup( psz_location );
79 p_demux->psz_file = get_path( psz_location ); /* parse URL */
81 if( unlikely(p_demux->psz_access == NULL
82 || p_demux->psz_demux == NULL
83 || p_demux->psz_location == NULL) )
87 msg_Dbg( p_obj, "creating demux: access='%s' demux='%s' "
88 "location='%s' file='%s'",
89 p_demux->psz_access, p_demux->psz_demux,
90 p_demux->psz_location, p_demux->psz_file );
95 p_demux->pf_demux = NULL;
96 p_demux->pf_control = NULL;
97 p_demux->p_sys = NULL;
98 p_demux->info.i_update = 0;
99 p_demux->info.i_title = 0;
100 p_demux->info.i_seekpoint = 0;
102 /* NOTE: Add only file without any problems here and with strong detection:
103 * - no .mp3, .a52, ...
104 * - wav can't be added 'cause of a52 and dts in them as raw audio
106 static const struct { char ext[5]; char demux[9]; } exttodemux[] =
109 { "asf", "asf" }, { "wmv", "asf" }, { "wma", "asf" },
117 { "mkv", "mkv" }, { "mka", "mkv" }, { "mks", "mkv" },
118 { "mp4", "mp4" }, { "m4a", "mp4" }, { "mov", "mp4" }, { "moov", "mp4" },
120 { "ogg", "ogg" }, { "ogm", "ogg" }, /* legacy Ogg */
121 { "oga", "ogg" }, { "spx", "ogg" }, { "ogv", "ogg" },
122 { "ogx", "ogg" }, /*RFC5334*/
123 { "opus", "ogg" }, /*draft-terriberry-oggopus-01*/
125 { "rm", "avformat" },
129 { "mid", "smf" }, { "rmi", "smf" }, { "kar", "smf" },
132 /* Here, we don't mind if it does not work, it must be quick */
133 static const struct { char ext[4]; char demux[5]; } exttodemux_quick[] =
144 const char *psz_module = p_demux->psz_demux;
146 if( !strcmp(psz_module, "any") && p_demux->psz_file != NULL
147 && (psz_ext = strrchr( p_demux->psz_file, '.' )) != NULL )
149 psz_ext++; // skip '.'
153 for( unsigned i = 0; exttodemux[i].ext[0]; i++ )
155 if( !strcasecmp( psz_ext, exttodemux[i].ext ) )
157 psz_module = exttodemux[i].demux;
164 for( unsigned i = 0; exttodemux_quick[i].ext[0]; i++ )
166 if( !strcasecmp( psz_ext, exttodemux_quick[i].ext ) )
168 psz_module = exttodemux_quick[i].demux;
175 /* ID3/APE tags will mess-up demuxer probing so we skip it here.
176 * ID3/APE parsers will called later on in the demuxer to access the
178 while (SkipID3Tag( p_demux ))
180 SkipAPETag( p_demux );
183 module_need( p_demux, "demux", psz_module,
184 !strcmp( psz_module, p_demux->psz_demux ) );
189 module_need( p_demux, "access_demux", p_demux->psz_access, true );
192 if( p_demux->p_module == NULL )
197 free( p_demux->psz_file );
198 free( p_demux->psz_location );
199 free( p_demux->psz_demux );
200 free( p_demux->psz_access );
201 vlc_object_release( p_demux );
205 /*****************************************************************************
207 *****************************************************************************/
208 void demux_Delete( demux_t *p_demux )
212 module_unneed( p_demux, p_demux->p_module );
213 free( p_demux->psz_file );
214 free( p_demux->psz_location );
215 free( p_demux->psz_demux );
216 free( p_demux->psz_access );
219 vlc_object_release( p_demux );
224 /*****************************************************************************
225 * demux_GetParentInput:
226 *****************************************************************************/
227 input_thread_t * demux_GetParentInput( demux_t *p_demux )
229 return p_demux->p_input ? vlc_object_hold((vlc_object_t*)p_demux->p_input) : NULL;
233 /*****************************************************************************
234 * demux_vaControlHelper:
235 *****************************************************************************/
236 int demux_vaControlHelper( stream_t *s,
237 int64_t i_start, int64_t i_end,
238 int64_t i_bitrate, int i_align,
239 int i_query, va_list args )
245 if( i_end < 0 ) i_end = stream_Size( s );
246 if( i_start < 0 ) i_start = 0;
247 if( i_align <= 0 ) i_align = 1;
248 i_tell = stream_Tell( s );
252 case DEMUX_GET_LENGTH:
253 pi64 = (int64_t*)va_arg( args, int64_t * );
254 if( i_bitrate > 0 && i_end > i_start )
256 *pi64 = INT64_C(8000000) * (i_end - i_start) / i_bitrate;
262 pi64 = (int64_t*)va_arg( args, int64_t * );
263 if( i_bitrate > 0 && i_tell >= i_start )
265 *pi64 = INT64_C(8000000) * (i_tell - i_start) / i_bitrate;
270 case DEMUX_GET_POSITION:
271 pf = (double*)va_arg( args, double * );
272 if( i_start < i_end )
274 *pf = (double)( i_tell - i_start ) /
275 (double)( i_end - i_start );
281 case DEMUX_SET_POSITION:
282 f = (double)va_arg( args, double );
283 if( i_start < i_end && f >= 0.0 && f <= 1.0 )
285 int64_t i_block = (f * ( i_end - i_start )) / i_align;
287 if( stream_Seek( s, i_start + i_block * i_align ) )
296 i64 = (int64_t)va_arg( args, int64_t );
297 if( i_bitrate > 0 && i64 >= 0 )
299 int64_t i_block = i64 * i_bitrate / INT64_C(8000000) / i_align;
300 if( stream_Seek( s, i_start + i_block * i_align ) )
309 return stream_vaControl( s, STREAM_GET_META, args );
311 case DEMUX_IS_PLAYLIST:
312 return stream_vaControl(s, STREAM_IS_DIRECTORY, args );
314 case DEMUX_GET_PTS_DELAY:
316 case DEMUX_HAS_UNSUPPORTED_META:
317 case DEMUX_SET_NEXT_DEMUX_TIME:
318 case DEMUX_GET_TITLE_INFO:
319 case DEMUX_SET_GROUP:
321 case DEMUX_GET_ATTACHMENTS:
322 case DEMUX_CAN_RECORD:
323 case DEMUX_SET_RECORD_STATE:
324 case DEMUX_GET_SIGNAL:
328 msg_Err( s, "unknown query in demux_vaControlDefault" );
333 /****************************************************************************
335 ****************************************************************************/
336 decoder_t *demux_PacketizerNew( demux_t *p_demux, es_format_t *p_fmt, const char *psz_msg )
338 decoder_t *p_packetizer;
339 p_packetizer = vlc_custom_create( p_demux, sizeof( *p_packetizer ),
340 "demux packetizer" );
343 es_format_Clean( p_fmt );
346 p_fmt->b_packetized = false;
348 p_packetizer->pf_decode_audio = NULL;
349 p_packetizer->pf_decode_video = NULL;
350 p_packetizer->pf_decode_sub = NULL;
351 p_packetizer->pf_packetize = NULL;
353 p_packetizer->fmt_in = *p_fmt;
354 es_format_Init( &p_packetizer->fmt_out, UNKNOWN_ES, 0 );
356 p_packetizer->p_module = module_need( p_packetizer, "packetizer", NULL, false );
357 if( !p_packetizer->p_module )
359 es_format_Clean( p_fmt );
360 vlc_object_release( p_packetizer );
361 msg_Err( p_demux, "cannot find packetizer for %s", psz_msg );
368 void demux_PacketizerDestroy( decoder_t *p_packetizer )
370 if( p_packetizer->p_module )
371 module_unneed( p_packetizer, p_packetizer->p_module );
372 es_format_Clean( &p_packetizer->fmt_in );
373 if( p_packetizer->p_description )
374 vlc_meta_Delete( p_packetizer->p_description );
375 vlc_object_release( p_packetizer );
378 static bool SkipID3Tag( demux_t *p_demux )
380 const uint8_t *p_peek;
381 uint8_t version, revision;
388 /* Get 10 byte id3 header */
389 if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
392 if( memcmp( p_peek, "ID3", 3 ) )
396 revision = p_peek[4];
397 b_footer = p_peek[5] & 0x10;
398 i_size = (p_peek[6]<<21) + (p_peek[7]<<14) + (p_peek[8]<<7) + p_peek[9];
400 if( b_footer ) i_size += 10;
403 /* Skip the entire tag */
404 if( stream_Read( p_demux->s, NULL, i_size ) < i_size )
407 msg_Dbg( p_demux, "ID3v2.%d revision %d tag found, skipping %d bytes",
408 version, revision, i_size );
411 static bool SkipAPETag( demux_t *p_demux )
413 const uint8_t *p_peek;
421 /* Get 32 byte ape header */
422 if( stream_Peek( p_demux->s, &p_peek, 32 ) < 32 )
425 if( memcmp( p_peek, "APETAGEX", 8 ) )
428 i_version = GetDWLE( &p_peek[8] );
429 flags = GetDWLE( &p_peek[8+4+4] );
430 if( ( i_version != 1000 && i_version != 2000 ) || !( flags & (1<<29) ) )
433 i_size = GetDWLE( &p_peek[8+4] ) + ( (flags&(1<<30)) ? 32 : 0 );
435 /* Skip the entire tag */
436 if( stream_Read( p_demux->s, NULL, i_size ) < i_size )
439 msg_Dbg( p_demux, "AP2 v%d tag found, skipping %d bytes",
440 i_version/1000, i_size );