1 /*****************************************************************************
2 * vlc_codecs.h: codec related structures needed by the demuxers and decoders
3 *****************************************************************************
4 * Copyright (C) 1999-2001 VLC authors and VideoLAN
6 * Author: Gildas Bazin <gbazin@videolan.org>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
24 #define VLC_CODECS_H 1
26 #include <vlc_fourcc.h>
29 * This file defines codec related structures needed by the demuxers and decoders
32 /* Structures exported to the demuxers and decoders */
34 #if !(defined _GUID_DEFINED || defined GUID_DEFINED)
42 } GUID
, *REFGUID
, *LPGUID
;
43 #endif /* GUID_DEFINED */
45 typedef GUID vlc_guid_t
;
47 #ifdef HAVE_ATTRIBUTE_PACKED
48 # define ATTR_PACKED __attribute__((__packed__))
49 #elif defined(__SUNPRO_C) || defined(_MSC_VER)
52 #elif defined(__APPLE__)
53 # pragma pack(push, 1)
59 #ifndef _WAVEFORMATEX_
60 #define _WAVEFORMATEX_
66 uint32_t nSamplesPerSec
;
67 uint32_t nAvgBytesPerSec
;
69 uint16_t wBitsPerSample
;
71 } WAVEFORMATEX
, *PWAVEFORMATEX
, *NPWAVEFORMATEX
, *LPWAVEFORMATEX
;
72 #endif /* _WAVEFORMATEX_ */
74 #ifndef _WAVEFORMATEXTENSIBLE_
75 #define _WAVEFORMATEXTENSIBLE_
78 _WAVEFORMATEXTENSIBLE
{
81 uint16_t wValidBitsPerSample
; /* bits of precision */
82 uint16_t wSamplesPerBlock
; /* valid if wBitsPerSample==0 */
83 uint16_t wReserved
; /* If neither applies, set to zero. */
86 uint32_t dwChannelMask
; /* Channels present */
89 } WAVEFORMATEXTENSIBLE
, *PWAVEFORMATEXTENSIBLE
;
90 #endif /* _WAVEFORMATEXTENSIBLE_ */
92 #ifndef _WAVEFORMATEXTENSIBLE_IEC61937_
93 #define _WAVEFORMATEXTENSIBLE_IEC61937_
96 _WAVEFORMATEXTENSIBLE_IEC61937
{
97 WAVEFORMATEXTENSIBLE FormatExt
;
98 uint32_t dwEncodedSamplesPerSec
;
99 uint32_t dwEncodedChannelCount
;
100 uint32_t dwAverageBytesPerSec
;
101 } WAVEFORMATEXTENSIBLE_IEC61937
, *PWAVEFORMATEXTENSIBLE_IEC61937
;
102 #endif /* _WAVEFORMATEXTENSIBLE_IEC61937_ */
109 uint32_t MainChunkID
;
111 uint32_t ChunkTypeID
;
113 uint32_t SubChunkLength
;
117 uint32_t BytesPerSec
;
118 uint16_t BytesPerSample
;
119 uint16_t BitsPerSample
;
120 uint32_t DataChunkID
;
123 #endif /* _WAVEHEADER_ */
125 #ifndef _VLC_BITMAPINFOHEADER_
126 #define _VLC_BITMAPINFOHEADER_
136 uint32_t biCompression
;
137 uint32_t biSizeImage
;
138 uint32_t biXPelsPerMeter
;
139 uint32_t biYPelsPerMeter
;
141 uint32_t biClrImportant
;
142 } VLC_BITMAPINFOHEADER
, *VLC_PBITMAPINFOHEADER
, *VLC_LPBITMAPINFOHEADER
;
147 VLC_BITMAPINFOHEADER bmiHeader
;
149 } VLC_BITMAPINFO
, *VLC_LPBITMAPINFO
;
157 int left
, top
, right
, bottom
;
161 #ifndef _REFERENCE_TIME_
162 #define _REFERENCE_TIME_
163 typedef int64_t REFERENCE_TIME
;
166 #ifndef _VIDEOINFOHEADER_
167 #define _VIDEOINFOHEADER_
174 uint32_t dwBitErrorRate
;
175 REFERENCE_TIME AvgTimePerFrame
;
176 VLC_BITMAPINFOHEADER bmiHeader
;
180 #if defined(__SUNPRO_C) || defined(_MSC_VER)
182 #elif defined(__APPLE__) && !HAVE_ATTRIBUTE_PACKED
186 /* WAVE format wFormatTag IDs */
187 /* See http://msdn.microsoft.com/en-us/library/aa904731%28v=vs.80%29.aspx */
188 #define WAVE_FORMAT_UNKNOWN 0x0000 /* Microsoft Corporation */
189 #define WAVE_FORMAT_PCM 0x0001 /* Microsoft Corporation */
190 #define WAVE_FORMAT_ADPCM 0x0002 /* Microsoft Corporation */
191 #define WAVE_FORMAT_IEEE_FLOAT 0x0003 /* Microsoft Corporation */
192 #define WAVE_FORMAT_ALAW 0x0006 /* Microsoft Corporation */
193 #define WAVE_FORMAT_MULAW 0x0007 /* Microsoft Corporation */
194 #define WAVE_FORMAT_DTS_MS 0x0008 /* Microsoft Corporation */
195 #define WAVE_FORMAT_WMAS 0x000a /* WMA 9 Speech */
196 #define WAVE_FORMAT_IMA_ADPCM 0x0011 /* Intel Corporation */
197 #define WAVE_FORMAT_YAMAHA_ADPCM 0x0020 /* Yamaha */
198 #define WAVE_FORMAT_TRUESPEECH 0x0022 /* TrueSpeech */
199 #define WAVE_FORMAT_GSM610 0x0031 /* Microsoft Corporation */
200 #define WAVE_FORMAT_MSNAUDIO 0x0032 /* Microsoft Corporation */
201 #define WAVE_FORMAT_AMR_NB_2 0x0038 /* AMR NB rogue */
202 #define WAVE_FORMAT_MSG723 0x0042 /* Microsoft G.723 [G723.1] */
203 #define WAVE_FORMAT_G726 0x0045 /* ITU-T standard */
204 #define WAVE_FORMAT_MPEG 0x0050 /* Microsoft Corporation */
205 #define WAVE_FORMAT_MPEGLAYER3 0x0055 /* ISO/MPEG Layer3 Format Tag */
206 #define WAVE_FORMAT_AMR_NB 0x0057 /* AMR NB */
207 #define WAVE_FORMAT_AMR_WB 0x0058 /* AMR Wideband */
208 #define WAVE_FORMAT_G726_ADPCM 0x0064 /* G.726 ADPCM */
209 #define WAVE_FORMAT_VOXWARE_RT29 0x0075 /* VoxWare MetaSound */
210 #define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092 /* Sonic Foundry */
211 #define WAVE_FORMAT_VIVOG723 0x0111 /* Vivo G.723.1 */
213 #define WAVE_FORMAT_AAC 0x00FF /* */
214 #define WAVE_FORMAT_AAC_MS 0xa106 /* Microsoft AAC */
215 #define WAVE_FORMAT_SIPRO 0x0130 /* Sipro Lab Telecom Inc. */
217 #define WAVE_FORMAT_WMA1 0x0160 /* WMA version 1 */
218 #define WAVE_FORMAT_WMA2 0x0161 /* WMA (v2) 7, 8, 9 Series */
219 #define WAVE_FORMAT_WMAP 0x0162 /* WMA 9 Professional */
220 #define WAVE_FORMAT_WMAL 0x0163 /* WMA 9 Lossless */
222 #define WAVE_FORMAT_CREATIVE_ADPCM 0x0200 /* Creative */
224 #define WAVE_FORMAT_ULEAD_DV_AUDIO_NTSC 0x0215 /* Ulead */
225 #define WAVE_FORMAT_ULEAD_DV_AUDIO_PAL 0x0216 /* Ulead */
227 #define WAVE_FORMAT_ATRAC3 0x0270 /* Atrac3, != from MSDN doc */
228 #define WAVE_FORMAT_SONY_ATRAC3 0x0272 /* Atrac3, != from MSDN doc */
230 #define WAVE_FORMAT_IMC 0x0401
231 #define WAVE_FORMAT_INDEO_AUDIO 0x0402 /* Indeo Audio Coder */
233 #define WAVE_FORMAT_ON2_AVC 0x0500 /* VP7 */
234 #define WAVE_FORMAT_ON2_AVC_2 0x0501 /* VP6 */
236 #define WAVE_FORMAT_QNAP_ADTS 0x0AAC /* Qnap ADTS */
237 #define WAVE_FORMAT_AAC_ADTS 0x1600 /* AAC/ADTS */
238 #define WAVE_FORMAT_AAC_2 0x1601 /* Other AAC */
239 #define WAVE_FORMAT_AAC_LATM 0x1602 /* AAC/LATM */
240 #define WAVE_FORMAT_HEAAC 0x1610
242 #define WAVE_FORMAT_A52 0x2000 /* a52 */
243 #define WAVE_FORMAT_DTS 0x2001 /* DTS */
244 #define WAVE_FORMAT_AVCODEC_AAC 0x706D
245 #define WAVE_FORMAT_DIVIO_AAC 0x4143 /* Divio's AAC */
247 #define WAVE_FORMAT_GSM_AMR_FIXED 0x7A21 /* Fixed bitrate, no SID */
248 #define WAVE_FORMAT_GSM_AMR 0x7A22 /* Variable bitrate, including SID */
250 #define WAVE_FORMAT_DK3 0x0062
251 #define WAVE_FORMAT_DK4 0x0061
253 /* At least libavformat use that ID: from libavformat/riff.c ('Vo' == 0x566f)
254 * { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
256 #define WAVE_FORMAT_VORBIS 0x566f
258 /* It seems that these IDs are used by braindead & obsolete VorbisACM encoder
260 * A few info is available except VorbisACM source (remember, Windows only)
261 * (available on http://svn.xiph.org), but it seems that vo3+ at least is
262 * made of Vorbis data encapsulated in Ogg container...
264 #define WAVE_FORMAT_VORB_1 0x674f
265 #define WAVE_FORMAT_VORB_2 0x6750
266 #define WAVE_FORMAT_VORB_3 0x6751
267 #define WAVE_FORMAT_VORB_1PLUS 0x676f
268 #define WAVE_FORMAT_VORB_2PLUS 0x6770
269 #define WAVE_FORMAT_VORB_3PLUS 0x6771
271 #define WAVE_FORMAT_G723_1 0xa100
272 #define WAVE_FORMAT_AAC_3 0xa106
273 #define WAVE_FORMAT_SPEEX 0xa109 /* Speex audio */
274 #define WAVE_FORMAT_FLAC 0xf1ac /* Xiph Flac */
276 #if !defined(WAVE_FORMAT_EXTENSIBLE)
277 #define WAVE_FORMAT_EXTENSIBLE 0xFFFE /* Microsoft */
280 /* GUID SubFormat IDs */
281 #define VLC_KSDATAFORMAT_SUBTYPE_ATRAC3P {0xE923AABF, 0xCB58, 0x4471, {0xA1, 0x19, 0xFF, 0xFA, 0x01, 0xE4, 0xCE, 0x62}} /* Undocumented */
282 #define VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}
283 #define VLC_WAVEFORMATEX_GUIDBASE {0x00000000, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} /* Generated from Wave Format */
284 #define VLC_AMBISONIC_SUBTYPE_PCM {0x00000001, 0x0721, 0x11D3, {0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00}} /* AMBISONIC_B_FORMAT_PCM */
285 #define VLC_AMBISONIC_SUBTYPE_IEEE_FLOAT {0x00000003, 0x0721, 0x11D3, {0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00}} /* AMBISONIC_B_FORMAT_IEEE_FLOAT */
287 /* Microsoft speaker definitions */
288 #define WAVE_SPEAKER_FRONT_LEFT 0x1
289 #define WAVE_SPEAKER_FRONT_RIGHT 0x2
290 #define WAVE_SPEAKER_FRONT_CENTER 0x4
291 #define WAVE_SPEAKER_LOW_FREQUENCY 0x8
292 #define WAVE_SPEAKER_BACK_LEFT 0x10
293 #define WAVE_SPEAKER_BACK_RIGHT 0x20
294 #define WAVE_SPEAKER_FRONT_LEFT_OF_CENTER 0x40
295 #define WAVE_SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
296 #define WAVE_SPEAKER_BACK_CENTER 0x100
297 #define WAVE_SPEAKER_SIDE_LEFT 0x200
298 #define WAVE_SPEAKER_SIDE_RIGHT 0x400
299 #define WAVE_SPEAKER_TOP_CENTER 0x800
300 #define WAVE_SPEAKER_TOP_FRONT_LEFT 0x1000
301 #define WAVE_SPEAKER_TOP_FRONT_CENTER 0x2000
302 #define WAVE_SPEAKER_TOP_FRONT_RIGHT 0x4000
303 #define WAVE_SPEAKER_TOP_BACK_LEFT 0x8000
304 #define WAVE_SPEAKER_TOP_BACK_CENTER 0x10000
305 #define WAVE_SPEAKER_TOP_BACK_RIGHT 0x20000
306 #define WAVE_SPEAKER_RESERVED 0x80000000
311 vlc_fourcc_t i_fourcc
;
312 const char *psz_name
;
314 wave_format_tag_to_fourcc
[] =
316 { WAVE_FORMAT_PCM
, VLC_FOURCC( 'a', 'r', 'a', 'w' ), "Raw audio" },
317 { WAVE_FORMAT_PCM
, VLC_CODEC_S8
, "PCM S8 audio" },
318 { WAVE_FORMAT_PCM
, VLC_CODEC_S16L
, "PCM S16L audio" },
319 { WAVE_FORMAT_PCM
, VLC_CODEC_S24L
, "PCM S24L audio" },
320 { WAVE_FORMAT_PCM
, VLC_CODEC_S32L
, "PCM S32L audio" },
321 { WAVE_FORMAT_ADPCM
, VLC_CODEC_ADPCM_MS
, "ADPCM" },
322 { WAVE_FORMAT_IEEE_FLOAT
, VLC_FOURCC( 'a', 'f', 'l', 't' ), "IEEE Float audio" },
323 { WAVE_FORMAT_IEEE_FLOAT
, VLC_CODEC_F32L
, "PCM 32 (Float) audio" },
324 { WAVE_FORMAT_IEEE_FLOAT
, VLC_CODEC_F64L
, "PCM 64 (Float) audio" },
325 { WAVE_FORMAT_ALAW
, VLC_CODEC_ALAW
, "A-Law" },
326 { WAVE_FORMAT_MULAW
, VLC_CODEC_MULAW
, "Mu-Law" },
327 { WAVE_FORMAT_IMA_ADPCM
, VLC_CODEC_ADPCM_IMA_WAV
, "Ima-ADPCM" },
328 { WAVE_FORMAT_CREATIVE_ADPCM
, VLC_CODEC_ADPCM_CREATIVE
, "Creative ADPCM" },
329 { WAVE_FORMAT_YAMAHA_ADPCM
, VLC_CODEC_ADPCM_YAMAHA
, "Yamaha ADPCM" },
330 { WAVE_FORMAT_TRUESPEECH
, VLC_CODEC_TRUESPEECH
, "Truespeech" },
331 { WAVE_FORMAT_GSM610
, VLC_CODEC_GSM_MS
, "Microsoft WAV GSM" },
332 { WAVE_FORMAT_MSNAUDIO
, VLC_CODEC_GSM_MS
, "Microsoft MSN Audio" },
333 { WAVE_FORMAT_G726
, VLC_CODEC_ADPCM_G726
, "G.726 ADPCM" },
334 { WAVE_FORMAT_G726_ADPCM
, VLC_CODEC_ADPCM_G726
, "G.726 ADPCM" },
335 { WAVE_FORMAT_G723_1
, VLC_CODEC_G723_1
, "G.723.1" },
336 { WAVE_FORMAT_MSG723
, VLC_CODEC_G723_1
, "Microsoft G.723 [G723.1]" },
337 { WAVE_FORMAT_VIVOG723
, VLC_CODEC_G723_1
, "Vivo G.723.1" },
338 { WAVE_FORMAT_MPEGLAYER3
, VLC_CODEC_MP3
, "Mpeg Audio Layer 3" },
339 { WAVE_FORMAT_MPEG
, VLC_CODEC_MPGA
, "Mpeg Audio" },
340 { WAVE_FORMAT_AMR_NB
, VLC_CODEC_AMR_NB
, "AMR NB" },
341 { WAVE_FORMAT_AMR_NB_2
, VLC_CODEC_AMR_NB
, "AMR NB" },
342 { WAVE_FORMAT_AMR_WB
, VLC_CODEC_AMR_WB
, "AMR Wideband" },
343 { WAVE_FORMAT_SIPRO
, VLC_CODEC_SIPR
, "Sipr Audio" },
344 { WAVE_FORMAT_A52
, VLC_CODEC_A52
, "A/52" },
345 { WAVE_FORMAT_WMA1
, VLC_CODEC_WMA1
, "Window Media Audio v1" },
346 { WAVE_FORMAT_WMA2
, VLC_CODEC_WMA2
, "Window Media Audio v2" },
347 { WAVE_FORMAT_WMAP
, VLC_CODEC_WMAP
, "Window Media Audio 9 Professional" },
348 { WAVE_FORMAT_WMAL
, VLC_CODEC_WMAL
, "Window Media Audio 9 Lossless" },
349 { WAVE_FORMAT_WMAS
, VLC_CODEC_WMAS
, "Window Media Audio 9 Speech" },
350 { WAVE_FORMAT_ATRAC3
, VLC_CODEC_ATRAC3
, "Sony Atrac3" },
351 { WAVE_FORMAT_SONY_ATRAC3
, VLC_CODEC_ATRAC3
, "Sony Atrac3" },
352 { WAVE_FORMAT_DK3
, VLC_CODEC_ADPCM_DK3
, "Duck DK3" },
353 { WAVE_FORMAT_DK4
, VLC_CODEC_ADPCM_DK4
, "Duck DK4" },
354 { WAVE_FORMAT_DTS
, VLC_CODEC_DTS
, "DTS Coherent Acoustics" },
355 { WAVE_FORMAT_DTS_MS
, VLC_CODEC_DTS
, "DTS Coherent Acoustics" },
356 { WAVE_FORMAT_DIVIO_AAC
, VLC_CODEC_MP4A
, "MPEG-4 Audio (Divio)" },
357 { WAVE_FORMAT_AAC
, VLC_CODEC_MP4A
, "MPEG-4 Audio" },
358 { WAVE_FORMAT_QNAP_ADTS
, VLC_CODEC_MP4A
, "MPEG-4 ADTS Audio" },
359 { WAVE_FORMAT_AAC_ADTS
, VLC_CODEC_MP4A
, "MPEG-4 ADTS Audio" },
360 { WAVE_FORMAT_AAC_2
, VLC_CODEC_MP4A
, "MPEG-4 Audio" },
361 { WAVE_FORMAT_AAC_3
, VLC_CODEC_MP4A
, "MPEG-4 Audio" },
362 { WAVE_FORMAT_AAC_LATM
, VLC_CODEC_MP4A
, "MPEG-4 LATM Audio" },
363 { WAVE_FORMAT_HEAAC
, VLC_CODEC_MP4A
, "MPEG-4 Audio" },
364 { WAVE_FORMAT_AVCODEC_AAC
, VLC_CODEC_MP4A
, "MPEG-4 Audio" },
365 { WAVE_FORMAT_AAC_MS
, VLC_CODEC_MP4A
, "MPEG-4 Audio" },
366 { WAVE_FORMAT_VORBIS
, VLC_CODEC_VORBIS
, "Vorbis Audio" },
367 { WAVE_FORMAT_VORB_1
, VLC_FOURCC( 'v', 'o', 'r', '1' ), "Vorbis 1 Audio" },
368 { WAVE_FORMAT_VORB_1PLUS
, VLC_FOURCC( 'v', 'o', '1', '+' ), "Vorbis 1+ Audio" },
369 { WAVE_FORMAT_VORB_2
, VLC_FOURCC( 'v', 'o', 'r', '2' ), "Vorbis 2 Audio" },
370 { WAVE_FORMAT_VORB_2PLUS
, VLC_FOURCC( 'v', 'o', '2', '+' ), "Vorbis 2+ Audio" },
371 { WAVE_FORMAT_VORB_3
, VLC_FOURCC( 'v', 'o', 'r', '3' ), "Vorbis 3 Audio" },
372 { WAVE_FORMAT_VORB_3PLUS
, VLC_FOURCC( 'v', 'o', '3', '+' ), "Vorbis 3+ Audio" },
373 { WAVE_FORMAT_SPEEX
, VLC_CODEC_SPEEX
, "Speex Audio" },
374 { WAVE_FORMAT_FLAC
, VLC_CODEC_FLAC
, "FLAC Audio" },
375 { WAVE_FORMAT_GSM_AMR_FIXED
, VLC_CODEC_AMR_NB
, "GSM-AMR Audio CBR, no SID" },
376 { WAVE_FORMAT_GSM_AMR
, VLC_CODEC_AMR_NB
, "GSM-AMR Audio VBR, SID" },
377 { WAVE_FORMAT_ULEAD_DV_AUDIO_NTSC
, VLC_CODEC_ULEAD_DV_AUDIO_NTSC
, "Ulead DV audio NTSC" },
378 { WAVE_FORMAT_ULEAD_DV_AUDIO_PAL
, VLC_CODEC_ULEAD_DV_AUDIO_PAL
, "Ulead DV audio PAL" },
379 { WAVE_FORMAT_IMC
, VLC_CODEC_IMC
, "IMC" },
380 { WAVE_FORMAT_INDEO_AUDIO
, VLC_CODEC_INDEO_AUDIO
, "Indeo Audio Coder" },
381 { WAVE_FORMAT_VOXWARE_RT29
, VLC_CODEC_METASOUND
, "VoxWare MetaSound" },
382 { WAVE_FORMAT_ON2_AVC
, VLC_CODEC_ON2AVC
, "On2 Audio for Video Codec (VP7)" },
383 { WAVE_FORMAT_ON2_AVC_2
, VLC_CODEC_ON2AVC
, "On2 Audio for Video Codec (VP6)" },
385 { WAVE_FORMAT_UNKNOWN
, VLC_CODEC_UNKNOWN
, "Unknown" }
388 static inline void wf_tag_to_fourcc( uint16_t i_tag
, vlc_fourcc_t
*fcc
,
389 const char **ppsz_name
)
392 for( i
= 0; wave_format_tag_to_fourcc
[i
].i_tag
!= 0; i
++ )
394 if( wave_format_tag_to_fourcc
[i
].i_tag
== i_tag
) break;
396 if( fcc
) *fcc
= wave_format_tag_to_fourcc
[i
].i_fourcc
;
397 if( ppsz_name
) *ppsz_name
= wave_format_tag_to_fourcc
[i
].psz_name
;
400 static inline void fourcc_to_wf_tag( vlc_fourcc_t fcc
, uint16_t *pi_tag
)
403 for( i
= 0; wave_format_tag_to_fourcc
[i
].i_tag
!= 0; i
++ )
405 if( wave_format_tag_to_fourcc
[i
].i_fourcc
== fcc
) break;
407 if( pi_tag
) *pi_tag
= wave_format_tag_to_fourcc
[i
].i_tag
;
410 /* If wFormatTag is WAVEFORMATEXTENSIBLE, we must look at the SubFormat tag
411 * to determine the actual format. Microsoft has stopped giving out wFormatTag
412 * assignments in lieu of letting 3rd parties generate their own GUIDs
417 const vlc_fourcc_t i_fourcc
;
418 const char *psz_name
;
420 sub_format_tag_to_fourcc
[] =
422 { VLC_AMBISONIC_SUBTYPE_PCM
, VLC_FOURCC( 'a', 'r', 'a', 'w' ), "Ambisonic B format (PCM)" },
423 { VLC_AMBISONIC_SUBTYPE_IEEE_FLOAT
, VLC_FOURCC( 'a', 'f', 'l', 't' ), "Ambisonic B format (IEEE float)" },
424 { VLC_KSDATAFORMAT_SUBTYPE_ATRAC3P
, VLC_CODEC_ATRAC3P
, "Sony Atrac3+" },
425 { VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN
, VLC_CODEC_UNKNOWN
, "Unknown" }
428 static inline int guidcmpbase( const GUID
*s1
, const GUID
*s2
)
430 return( s1
->Data2
== s2
->Data2
&&
431 s1
->Data3
== s2
->Data3
&& !memcmp( s1
->Data4
, s2
->Data4
, 8 ) );
434 /* compares two GUIDs, returns 1 if identical, 0 otherwise */
435 static inline int guidcmp( const GUID
*s1
, const GUID
*s2
)
437 return( s1
->Data1
== s2
->Data1
&& guidcmpbase( s1
, s2
) );
440 #define GUID_FMT "0x%8.8x-0x%4.4x-0x%4.4x-0x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x"
441 #define GUID_PRINT( guid ) \
442 (unsigned)(guid).Data1, \
445 (guid).Data4[0],(guid).Data4[1],(guid).Data4[2],(guid).Data4[3], \
446 (guid).Data4[4],(guid).Data4[5],(guid).Data4[6],(guid).Data4[7]
449 static inline void sf_tag_to_fourcc( const GUID
*guid_tag
,
450 vlc_fourcc_t
*fcc
, const char **ppsz_name
)
453 bool b_found
= false;
455 const GUID unknown
= VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN
;
456 const GUID waveformatex
= VLC_WAVEFORMATEX_GUIDBASE
;
458 for( i
= 0; !guidcmp( &sub_format_tag_to_fourcc
[i
].guid_tag
,
461 if( guidcmp( &sub_format_tag_to_fourcc
[i
].guid_tag
, guid_tag
) )
468 if( !b_found
&& guidcmpbase(guid_tag
, &waveformatex
) )
470 wf_tag_to_fourcc(guid_tag
->Data1
, fcc
, ppsz_name
);
474 if( fcc
) *fcc
= sub_format_tag_to_fourcc
[i
].i_fourcc
;
475 if( ppsz_name
) *ppsz_name
= sub_format_tag_to_fourcc
[i
].psz_name
;
479 #endif /* "codecs.h" */