git.sesse.net Git - vlc/blob - include/vlc_codecs.h

   1 /*****************************************************************************
   2  * vlc_codecs.h: codec related structures needed by the demuxers and decoders
   3  *****************************************************************************
   4  * Copyright (C) 1999-2001 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Author: Gildas Bazin <gbazin@videolan.org>
   8  *
   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.
  13  *
  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.
  18  *
  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  *****************************************************************************/
  23
  24 #ifndef VLC_CODECS_H
  25 #define VLC_CODECS_H 1
  26
  27 #include <vlc_fourcc.h>
  28 /**
  29  * \file
  30  * This file defines codec related structures needed by the demuxers and decoders
  31  */
  32
  33 /* Structures exported to the demuxers and decoders */
  34
  35 #if !(defined _GUID_DEFINED || defined GUID_DEFINED)
  36 #define GUID_DEFINED
  37 typedef struct _GUID
  38 {
  39     uint32_t Data1;
  40     uint16_t Data2;
  41     uint16_t Data3;
  42     uint8_t  Data4[8];
  43 } GUID, *REFGUID, *LPGUID;
  44 #endif /* GUID_DEFINED */
  45
  46 typedef GUID guid_t;
  47
  48 #ifdef HAVE_ATTRIBUTE_PACKED
  49 #   define ATTR_PACKED __attribute__((__packed__))
  50 #elif defined(__SUNPRO_C) || defined(_MSC_VER)
  51 #   pragma pack(1)
  52 #   define ATTR_PACKED
  53 #elif defined(__APPLE__)
  54 #   pragma pack(push, 1)
  55 #   define ATTR_PACKED
  56 #else
  57 #   error FIXME
  58 #endif
  59
  60 #ifndef _WAVEFORMATEX_
  61 #define _WAVEFORMATEX_
  62 typedef struct
  63 ATTR_PACKED
  64 _WAVEFORMATEX {
  65     uint16_t   wFormatTag;
  66     uint16_t   nChannels;
  67     uint32_t   nSamplesPerSec;
  68     uint32_t   nAvgBytesPerSec;
  69     uint16_t   nBlockAlign;
  70     uint16_t   wBitsPerSample;
  71     uint16_t   cbSize;
  72 } WAVEFORMATEX, *PWAVEFORMATEX, *NPWAVEFORMATEX, *LPWAVEFORMATEX;
  73 #endif /* _WAVEFORMATEX_ */
  74
  75 #ifndef _WAVEFORMATEXTENSIBLE_
  76 #define _WAVEFORMATEXTENSIBLE_
  77 typedef struct
  78 ATTR_PACKED
  79 _WAVEFORMATEXTENSIBLE {
  80     WAVEFORMATEX Format;
  81     union {
  82         uint16_t wValidBitsPerSample;       /* bits of precision  */
  83         uint16_t wSamplesPerBlock;          /* valid if wBitsPerSample==0 */
  84         uint16_t wReserved;                 /* If neither applies, set to zero. */
  85     } Samples;
  86
  87     uint32_t     dwChannelMask;             /* Channels present */
  88
  89     GUID SubFormat;
  90 } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
  91 #endif /* _WAVEFORMATEXTENSIBLE_ */
  92
  93 #ifndef _WAVEHEADER_
  94 #define _WAVEHEADER_
  95 typedef struct
  96 ATTR_PACKED
  97 _WAVEHEADER {
  98     uint32_t MainChunkID;
  99     uint32_t Length;
 100     uint32_t ChunkTypeID;
 101     uint32_t SubChunkID;
 102     uint32_t SubChunkLength;
 103     uint16_t Format;
 104     uint16_t Modus;
 105     uint32_t SampleFreq;
 106     uint32_t BytesPerSec;
 107     uint16_t BytesPerSample;
 108     uint16_t BitsPerSample;
 109     uint32_t DataChunkID;
 110     uint32_t DataLength;
 111 } WAVEHEADER;
 112 #endif /* _WAVEHEADER_ */
 113
 114 #ifndef _VLC_BITMAPINFOHEADER_
 115 #define _VLC_BITMAPINFOHEADER_
 116
 117 typedef struct
 118 ATTR_PACKED
 119 {
 120     uint32_t   biSize;
 121     uint32_t   biWidth;
 122     uint32_t   biHeight;
 123     uint16_t   biPlanes;
 124     uint16_t   biBitCount;
 125     uint32_t   biCompression;
 126     uint32_t   biSizeImage;
 127     uint32_t   biXPelsPerMeter;
 128     uint32_t   biYPelsPerMeter;
 129     uint32_t   biClrUsed;
 130     uint32_t   biClrImportant;
 131 } VLC_BITMAPINFOHEADER, *VLC_PBITMAPINFOHEADER, *VLC_LPBITMAPINFOHEADER;
 132
 133 typedef struct
 134 ATTR_PACKED
 135 {
 136     VLC_BITMAPINFOHEADER bmiHeader;
 137     int                  bmiColors[1];
 138 } VLC_BITMAPINFO, *VLC_LPBITMAPINFO;
 139 #endif
 140
 141 #ifndef _RECT32_
 142 #define _RECT32_
 143 typedef struct
 144 ATTR_PACKED
 145 {
 146     int left, top, right, bottom;
 147 } RECT32;
 148 #endif
 149
 150 #ifndef _REFERENCE_TIME_
 151 #define _REFERENCE_TIME_
 152 typedef int64_t REFERENCE_TIME;
 153 #endif
 154
 155 #ifndef _VIDEOINFOHEADER_
 156 #define _VIDEOINFOHEADER_
 157 typedef struct
 158 ATTR_PACKED
 159 {
 160     RECT32                  rcSource;
 161     RECT32                  rcTarget;
 162     uint32_t                dwBitRate;
 163     uint32_t                dwBitErrorRate;
 164     REFERENCE_TIME          AvgTimePerFrame;
 165     VLC_BITMAPINFOHEADER    bmiHeader;
 166 } VIDEOINFOHEADER;
 167 #endif
 168
 169 #ifndef _RGBQUAD_
 170 #define _RGBQUAD_
 171 typedef struct
 172 ATTR_PACKED
 173 {
 174     uint8_t rgbBlue;
 175     uint8_t rgbGreen;
 176     uint8_t rgbRed;
 177     uint8_t rgbReserved;
 178 } RGBQUAD1;
 179 #endif
 180
 181 #ifndef _TRUECOLORINFO_
 182 #define _TRUECOLORINFO_
 183 typedef struct
 184 ATTR_PACKED
 185 {
 186     uint32_t dwBitMasks[3];
 187     RGBQUAD1 bmiColors[256];
 188 } TRUECOLORINFO;
 189 #endif
 190
 191 #ifndef _VIDEOINFO_
 192 #define _VIDEOINFO_
 193 typedef struct
 194 ATTR_PACKED
 195 {
 196     RECT32                  rcSource;
 197     RECT32                  rcTarget;
 198     uint32_t                dwBitRate;
 199     uint32_t                dwBitErrorRate;
 200     REFERENCE_TIME          AvgTimePerFrame;
 201     VLC_BITMAPINFOHEADER    bmiHeader;
 202
 203     union
 204     {
 205         RGBQUAD1 bmiColors[256]; /* Colour palette */
 206         uint32_t dwBitMasks[3]; /* True colour masks */
 207         TRUECOLORINFO TrueColorInfo; /* Both of the above */
 208     };
 209
 210 } VIDEOINFO;
 211 #endif
 212
 213 #if defined(__SUNPRO_C) || defined(_MSC_VER)
 214 #   pragma pack()
 215 #elif defined(__APPLE__) && !HAVE_ATTRIBUTE_PACKED
 216 #   pragma pack(pop)
 217 #endif
 218
 219 /* WAVE format wFormatTag IDs */
 220 /* See http://msdn.microsoft.com/en-us/library/aa904731%28v=vs.80%29.aspx */
 221 #define WAVE_FORMAT_UNKNOWN             0x0000 /* Microsoft Corporation */
 222 #define WAVE_FORMAT_PCM                 0x0001 /* Microsoft Corporation */
 223 #define WAVE_FORMAT_ADPCM               0x0002 /* Microsoft Corporation */
 224 #define WAVE_FORMAT_IEEE_FLOAT          0x0003 /* Microsoft Corporation */
 225 #define WAVE_FORMAT_ALAW                0x0006 /* Microsoft Corporation */
 226 #define WAVE_FORMAT_MULAW               0x0007 /* Microsoft Corporation */
 227 #define WAVE_FORMAT_DTS_MS              0x0008 /* Microsoft Corporation */
 228 #define WAVE_FORMAT_WMAS                0x000a /* WMA 9 Speech */
 229 #define WAVE_FORMAT_IMA_ADPCM           0x0011 /* Intel Corporation */
 230 #define WAVE_FORMAT_YAMAHA_ADPCM        0x0020 /* Yamaha */
 231 #define WAVE_FORMAT_TRUESPEECH          0x0022 /* TrueSpeech */
 232 #define WAVE_FORMAT_GSM610              0x0031 /* Microsoft Corporation */
 233 #define WAVE_FORMAT_MSNAUDIO            0x0032 /* Microsoft Corporation */
 234 #define WAVE_FORMAT_AMR_NB_2            0x0038 /* AMR NB rogue */
 235 #define WAVE_FORMAT_MSG723              0x0042 /* Microsoft G.723 [G723.1] */
 236 #define WAVE_FORMAT_G726                0x0045 /* ITU-T standard  */
 237 #define WAVE_FORMAT_MPEG                0x0050 /* Microsoft Corporation */
 238 #define WAVE_FORMAT_MPEGLAYER3          0x0055 /* ISO/MPEG Layer3 Format Tag */
 239 #define WAVE_FORMAT_AMR_NB              0x0057 /* AMR NB */
 240 #define WAVE_FORMAT_AMR_WB              0x0058 /* AMR Wideband */
 241 #define WAVE_FORMAT_G726_ADPCM          0x0064 /* G.726 ADPCM  */
 242 #define WAVE_FORMAT_VOXWARE_RT29        0x0075 /* VoxWare MetaSound */
 243 #define WAVE_FORMAT_DOLBY_AC3_SPDIF     0x0092 /* Sonic Foundry */
 244 #define WAVE_FORMAT_VIVOG723            0x0111 /* Vivo G.723.1 */
 245
 246 #define WAVE_FORMAT_AAC                 0x00FF /* */
 247 #define WAVE_FORMAT_AAC_MS              0xa106 /* Microsoft AAC */
 248 #define WAVE_FORMAT_SIPRO               0x0130 /* Sipro Lab Telecom Inc. */
 249
 250 #define WAVE_FORMAT_WMA1                0x0160 /* WMA version 1 */
 251 #define WAVE_FORMAT_WMA2                0x0161 /* WMA (v2) 7, 8, 9 Series */
 252 #define WAVE_FORMAT_WMAP                0x0162 /* WMA 9 Professional */
 253 #define WAVE_FORMAT_WMAL                0x0163 /* WMA 9 Lossless */
 254
 255 #define WAVE_FORMAT_ULEAD_DV_AUDIO_NTSC 0x0215 /* Ulead */
 256 #define WAVE_FORMAT_ULEAD_DV_AUDIO_PAL  0x0216 /* Ulead */
 257
 258 #define WAVE_FORMAT_ATRAC3              0x0270 /* Atrac3, != from MSDN doc */
 259 #define WAVE_FORMAT_SONY_ATRAC3         0x0272 /* Atrac3, != from MSDN doc */
 260
 261 #define WAVE_FORMAT_IMC                 0x0401
 262 #define WAVE_FORMAT_INDEO_AUDIO         0x0402 /* Indeo Audio Coder */
 263
 264 #define WAVE_FORMAT_ON2_AVC             0x0500 /* VP7 */
 265 #define WAVE_FORMAT_ON2_AVC_2           0x0501 /* VP6 */
 266
 267 #define WAVE_FORMAT_AAC_2               0x1601 /* Other AAC */
 268 #define WAVE_FORMAT_AAC_LATM            0x1602 /* AAC/LATM */
 269
 270 #define WAVE_FORMAT_A52                 0x2000 /* a52 */
 271 #define WAVE_FORMAT_DTS                 0x2001 /* DTS */
 272 #define WAVE_FORMAT_AVCODEC_AAC         0x706D
 273 #define WAVE_FORMAT_DIVIO_AAC           0x4143 /* Divio's AAC */
 274
 275 #define WAVE_FORMAT_GSM_AMR_FIXED       0x7A21 /* Fixed bitrate, no SID */
 276 #define WAVE_FORMAT_GSM_AMR             0x7A22 /* Variable bitrate, including SID */
 277
 278 #define WAVE_FORMAT_DK3                 0x0062
 279 #define WAVE_FORMAT_DK4                 0x0061
 280
 281 /* At least libavformat use that ID: from libavformat/riff.c ('Vo' == 0x566f)
 282  * { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
 283  */
 284 #define WAVE_FORMAT_VORBIS              0x566f
 285
 286 /* It seems that these IDs are used by braindead & obsolete VorbisACM encoder
 287  * (Windows only)
 288  * A few info is available except VorbisACM source (remember, Windows only)
 289  * (available on http://svn.xiph.org), but it seems that vo3+ at least is
 290  * made of Vorbis data encapsulated in Ogg container...
 291  */
 292 #define WAVE_FORMAT_VORB_1              0x674f
 293 #define WAVE_FORMAT_VORB_2              0x6750
 294 #define WAVE_FORMAT_VORB_3              0x6751
 295 #define WAVE_FORMAT_VORB_1PLUS          0x676f
 296 #define WAVE_FORMAT_VORB_2PLUS          0x6770
 297 #define WAVE_FORMAT_VORB_3PLUS          0x6771
 298
 299 #define WAVE_FORMAT_G723_1              0xa100
 300 #define WAVE_FORMAT_AAC_3               0xa106
 301 #define WAVE_FORMAT_SPEEX               0xa109 /* Speex audio */
 302 #define WAVE_FORMAT_FLAC                0xf1ac /* Xiph Flac */
 303
 304 #if !defined(WAVE_FORMAT_EXTENSIBLE)
 305   #define WAVE_FORMAT_EXTENSIBLE          0xFFFE /* Microsoft */
 306 #endif
 307
 308 /* GUID SubFormat IDs */
 309 /* We need both b/c const variables are not compile-time constants in C, giving
 310  * us an error if we use the const GUID in an enum */
 311
 312 #ifndef _KSDATAFORMAT_SUBTYPE_PCM_
 313 #define _KSDATAFORMAT_SUBTYPE_PCM_ {0x00000001, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}}
 314 static const GUID VLC_KSDATAFORMAT_SUBTYPE_PCM = {0xE923AABF, 0xCB58, 0x4471, {0xA1, 0x19, 0xFF, 0xFA, 0x01, 0xE4, 0xCE, 0x62}};
 315 #define KSDATAFORMAT_SUBTYPE_PCM VLC_KSDATAFORMAT_SUBTYPE_PCM
 316 #endif
 317
 318 #ifndef _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT_
 319 #define _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT_ {0x00000003, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}}
 320 static const GUID VLC_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {0x00000003, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
 321 #define KSDATAFORMAT_SUBTYPE_IEEE_FLOAT VLC_KSDATAFORMAT_SUBTYPE_PCM
 322 #endif
 323
 324
 325 #ifndef _KSDATAFORMAT_SUBTYPE_UNKNOWN_
 326 #define _KSDATAFORMAT_SUBTYPE_UNKNOWN_ {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}
 327 static const GUID VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN = {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
 328 #define KSDATAFORMAT_SUBTYPE_UNKNOWN VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN
 329 #endif
 330
 331 /* Microsoft speaker definitions */
 332 #define WAVE_SPEAKER_FRONT_LEFT             0x1
 333 #define WAVE_SPEAKER_FRONT_RIGHT            0x2
 334 #define WAVE_SPEAKER_FRONT_CENTER           0x4
 335 #define WAVE_SPEAKER_LOW_FREQUENCY          0x8
 336 #define WAVE_SPEAKER_BACK_LEFT              0x10
 337 #define WAVE_SPEAKER_BACK_RIGHT             0x20
 338 #define WAVE_SPEAKER_FRONT_LEFT_OF_CENTER   0x40
 339 #define WAVE_SPEAKER_FRONT_RIGHT_OF_CENTER  0x80
 340 #define WAVE_SPEAKER_BACK_CENTER            0x100
 341 #define WAVE_SPEAKER_SIDE_LEFT              0x200
 342 #define WAVE_SPEAKER_SIDE_RIGHT             0x400
 343 #define WAVE_SPEAKER_TOP_CENTER             0x800
 344 #define WAVE_SPEAKER_TOP_FRONT_LEFT         0x1000
 345 #define WAVE_SPEAKER_TOP_FRONT_CENTER       0x2000
 346 #define WAVE_SPEAKER_TOP_FRONT_RIGHT        0x4000
 347 #define WAVE_SPEAKER_TOP_BACK_LEFT          0x8000
 348 #define WAVE_SPEAKER_TOP_BACK_CENTER        0x10000
 349 #define WAVE_SPEAKER_TOP_BACK_RIGHT         0x20000
 350 #define WAVE_SPEAKER_RESERVED               0x80000000
 351
 352 static const struct
 353 {
 354     uint16_t     i_tag;
 355     vlc_fourcc_t i_fourcc;
 356     const char  *psz_name;
 357 }
 358 wave_format_tag_to_fourcc[] =
 359 {
 360     { WAVE_FORMAT_PCM,              VLC_FOURCC( 'a', 'r', 'a', 'w' ), "Raw audio" },
 361     { WAVE_FORMAT_PCM,              VLC_CODEC_S8,                     "PCM S8 audio" },
 362     { WAVE_FORMAT_PCM,              VLC_CODEC_S16L,                   "PCM S16L audio" },
 363     { WAVE_FORMAT_PCM,              VLC_CODEC_S24L,                   "PCM S24L audio" },
 364     { WAVE_FORMAT_PCM,              VLC_CODEC_S32L,                   "PCM S32L audio" },
 365     { WAVE_FORMAT_ADPCM,            VLC_CODEC_ADPCM_MS,               "ADPCM" },
 366     { WAVE_FORMAT_IEEE_FLOAT,       VLC_FOURCC( 'a', 'f', 'l', 't' ), "IEEE Float audio" },
 367     { WAVE_FORMAT_IEEE_FLOAT,       VLC_CODEC_F32L,                   "PCM 32 (Float) audio" },
 368     { WAVE_FORMAT_IEEE_FLOAT,       VLC_CODEC_F64L,                   "PCM 64 (Float) audio" },
 369     { WAVE_FORMAT_ALAW,             VLC_CODEC_ALAW,                   "A-Law" },
 370     { WAVE_FORMAT_MULAW,            VLC_CODEC_MULAW,                  "Mu-Law" },
 371     { WAVE_FORMAT_IMA_ADPCM,        VLC_CODEC_ADPCM_IMA_WAV,          "Ima-ADPCM" },
 372     { WAVE_FORMAT_YAMAHA_ADPCM,     VLC_CODEC_ADPCM_YAMAHA,           "Yamaha ADPCM" },
 373     { WAVE_FORMAT_TRUESPEECH,       VLC_CODEC_TRUESPEECH,             "Truespeech" },
 374     { WAVE_FORMAT_GSM610,           VLC_CODEC_GSM_MS,                 "Microsoft WAV GSM" },
 375     { WAVE_FORMAT_MSNAUDIO,         VLC_CODEC_GSM_MS,                 "Microsoft MSN Audio" },
 376     { WAVE_FORMAT_G726,             VLC_CODEC_ADPCM_G726,             "G.726 ADPCM" },
 377     { WAVE_FORMAT_G726_ADPCM,       VLC_CODEC_ADPCM_G726,             "G.726 ADPCM" },
 378     { WAVE_FORMAT_G723_1,           VLC_CODEC_G723_1,                 "G.723.1" },
 379     { WAVE_FORMAT_MSG723,           VLC_CODEC_G723_1,                 "Microsoft G.723 [G723.1]" },
 380     { WAVE_FORMAT_VIVOG723,         VLC_CODEC_G723_1,                 "Vivo G.723.1" },
 381     { WAVE_FORMAT_MPEGLAYER3,       VLC_CODEC_MP3,                    "Mpeg Audio Layer 3" },
 382     { WAVE_FORMAT_MPEG,             VLC_CODEC_MPGA,                   "Mpeg Audio" },
 383     { WAVE_FORMAT_AMR_NB,           VLC_CODEC_AMR_NB,                 "AMR NB" },
 384     { WAVE_FORMAT_AMR_NB_2,         VLC_CODEC_AMR_NB,                 "AMR NB" },
 385     { WAVE_FORMAT_AMR_WB,           VLC_CODEC_AMR_WB,                 "AMR Wideband" },
 386     { WAVE_FORMAT_SIPRO,            VLC_CODEC_SIPR,                   "Sipr Audio" },
 387     { WAVE_FORMAT_A52,              VLC_CODEC_A52,                    "A/52" },
 388     { WAVE_FORMAT_WMA1,             VLC_CODEC_WMA1,                   "Window Media Audio v1" },
 389     { WAVE_FORMAT_WMA2,             VLC_CODEC_WMA2,                   "Window Media Audio v2" },
 390     { WAVE_FORMAT_WMAP,             VLC_CODEC_WMAP,                   "Window Media Audio 9 Professional" },
 391     { WAVE_FORMAT_WMAL,             VLC_CODEC_WMAL,                   "Window Media Audio 9 Lossless" },
 392     { WAVE_FORMAT_WMAS,             VLC_CODEC_WMAS,                   "Window Media Audio 9 Speech" },
 393     { WAVE_FORMAT_ATRAC3,           VLC_CODEC_ATRAC3,                 "Sony Atrac3" },
 394     { WAVE_FORMAT_SONY_ATRAC3,      VLC_CODEC_ATRAC3,                 "Sony Atrac3" },
 395     { WAVE_FORMAT_DK3,              VLC_CODEC_ADPCM_DK3,              "Duck DK3" },
 396     { WAVE_FORMAT_DK4,              VLC_CODEC_ADPCM_DK4,              "Duck DK4" },
 397     { WAVE_FORMAT_DTS,              VLC_CODEC_DTS,                    "DTS Coherent Acoustics" },
 398     { WAVE_FORMAT_DTS_MS,           VLC_CODEC_DTS,                    "DTS Coherent Acoustics" },
 399     { WAVE_FORMAT_DIVIO_AAC,        VLC_CODEC_MP4A,                   "MPEG-4 Audio (Divio)" },
 400     { WAVE_FORMAT_AAC,              VLC_CODEC_MP4A,                   "MPEG-4 Audio" },
 401     { WAVE_FORMAT_AAC_2,            VLC_CODEC_MP4A,                   "MPEG-4 Audio" },
 402     { WAVE_FORMAT_AAC_3,            VLC_CODEC_MP4A,                   "MPEG-4 Audio" },
 403     { WAVE_FORMAT_AAC_LATM,         VLC_CODEC_MP4A,                   "MPEG-4 Audio" },
 404     { WAVE_FORMAT_AVCODEC_AAC,      VLC_CODEC_MP4A,                   "MPEG-4 Audio" },
 405     { WAVE_FORMAT_AAC_MS,           VLC_CODEC_MP4A,                   "MPEG-4 Audio" },
 406     { WAVE_FORMAT_VORBIS,           VLC_CODEC_VORBIS,                 "Vorbis Audio" },
 407     { WAVE_FORMAT_VORB_1,           VLC_FOURCC( 'v', 'o', 'r', '1' ), "Vorbis 1 Audio" },
 408     { WAVE_FORMAT_VORB_1PLUS,       VLC_FOURCC( 'v', 'o', '1', '+' ), "Vorbis 1+ Audio" },
 409     { WAVE_FORMAT_VORB_2,           VLC_FOURCC( 'v', 'o', 'r', '2' ), "Vorbis 2 Audio" },
 410     { WAVE_FORMAT_VORB_2PLUS,       VLC_FOURCC( 'v', 'o', '2', '+' ), "Vorbis 2+ Audio" },
 411     { WAVE_FORMAT_VORB_3,           VLC_FOURCC( 'v', 'o', 'r', '3' ), "Vorbis 3 Audio" },
 412     { WAVE_FORMAT_VORB_3PLUS,       VLC_FOURCC( 'v', 'o', '3', '+' ), "Vorbis 3+ Audio" },
 413     { WAVE_FORMAT_SPEEX,            VLC_CODEC_SPEEX,                  "Speex Audio" },
 414     { WAVE_FORMAT_FLAC,             VLC_CODEC_FLAC,                   "FLAC Audio" },
 415     { WAVE_FORMAT_GSM_AMR_FIXED,    VLC_CODEC_AMR_NB,                 "GSM-AMR Audio CBR, no SID" },
 416     { WAVE_FORMAT_GSM_AMR,          VLC_CODEC_AMR_NB,                 "GSM-AMR Audio VBR, SID" },
 417     { WAVE_FORMAT_ULEAD_DV_AUDIO_NTSC, VLC_CODEC_ULEAD_DV_AUDIO_NTSC, "Ulead DV audio NTSC" },
 418     { WAVE_FORMAT_ULEAD_DV_AUDIO_PAL, VLC_CODEC_ULEAD_DV_AUDIO_PAL,   "Ulead DV audio PAL" },
 419     { WAVE_FORMAT_IMC,              VLC_CODEC_IMC,                    "IMC" },
 420     { WAVE_FORMAT_INDEO_AUDIO,      VLC_CODEC_INDEO_AUDIO,            "Indeo Audio Coder" },
 421     { WAVE_FORMAT_VOXWARE_RT29,     VLC_CODEC_METASOUND,              "VoxWare MetaSound" },
 422     { WAVE_FORMAT_ON2_AVC,          VLC_CODEC_ON2AVC,                 "On2 Audio for Video Codec (VP7)" },
 423     { WAVE_FORMAT_ON2_AVC_2,        VLC_CODEC_ON2AVC,                 "On2 Audio for Video Codec (VP6)" },
 424
 425     { WAVE_FORMAT_UNKNOWN,          VLC_FOURCC( 'u', 'n', 'd', 'f' ), "Unknown" }
 426 };
 427
 428 static inline void wf_tag_to_fourcc( uint16_t i_tag, vlc_fourcc_t *fcc,
 429                                      const char **ppsz_name )
 430 {
 431     int i;
 432     for( i = 0; wave_format_tag_to_fourcc[i].i_tag != 0; i++ )
 433     {
 434         if( wave_format_tag_to_fourcc[i].i_tag == i_tag ) break;
 435     }
 436     if( fcc ) *fcc = wave_format_tag_to_fourcc[i].i_fourcc;
 437     if( ppsz_name ) *ppsz_name = wave_format_tag_to_fourcc[i].psz_name;
 438 }
 439
 440 static inline void fourcc_to_wf_tag( vlc_fourcc_t fcc, uint16_t *pi_tag )
 441 {
 442     int i;
 443     for( i = 0; wave_format_tag_to_fourcc[i].i_tag != 0; i++ )
 444     {
 445         if( wave_format_tag_to_fourcc[i].i_fourcc == fcc ) break;
 446     }
 447     if( pi_tag ) *pi_tag = wave_format_tag_to_fourcc[i].i_tag;
 448 }
 449
 450 /* If wFormatTag is WAVEFORMATEXTENSIBLE, we must look at the SubFormat tag
 451  * to determine the actual format.  Microsoft has stopped giving out wFormatTag
 452  * assignments in lieu of letting 3rd parties generate their own GUIDs
 453  */
 454 static const struct
 455 {
 456     GUID         guid_tag;
 457     vlc_fourcc_t i_fourcc;
 458     const char  *psz_name;
 459 }
 460 sub_format_tag_to_fourcc[] =
 461 {
 462     { _KSDATAFORMAT_SUBTYPE_PCM_, VLC_FOURCC( 'a', 'r', 'a', 'w' ), "PCM" },
 463     { _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT_, VLC_FOURCC( 'a', 'f', 'l', 't' ), "Float PCM" },
 464     { _KSDATAFORMAT_SUBTYPE_UNKNOWN_, VLC_FOURCC( 'u', 'n', 'd', 'f' ), "Unknown" }
 465 };
 466
 467 /* compares two GUIDs, returns 1 if identical, 0 otherwise */
 468 static inline int guidcmp( const GUID *s1, const GUID *s2 )
 469 {
 470     return( s1->Data1 == s2->Data1 && s1->Data2 == s2->Data2 &&
 471             s1->Data3 == s2->Data3 && !memcmp( s1->Data4, s2->Data4, 8 ) );
 472 }
 473
 474 static inline void sf_tag_to_fourcc( GUID *guid_tag,
 475                                      vlc_fourcc_t *fcc, const char **ppsz_name )
 476 {
 477     int i;
 478
 479     for( i = 0; !guidcmp( &sub_format_tag_to_fourcc[i].guid_tag,
 480                           &KSDATAFORMAT_SUBTYPE_UNKNOWN ); i++ )
 481     {
 482         if( guidcmp( &sub_format_tag_to_fourcc[i].guid_tag, guid_tag ) ) break;
 483     }
 484     if( fcc ) *fcc = sub_format_tag_to_fourcc[i].i_fourcc;
 485     if( ppsz_name ) *ppsz_name = sub_format_tag_to_fourcc[i].psz_name;
 486 }
 487
 488 #endif /* "codecs.h" */