mirror of
https://code.videolan.org/videolan/vlc
synced 2024-09-28 23:09:59 +02:00
475 lines
20 KiB
C
475 lines
20 KiB
C
/*****************************************************************************
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* vlc_codecs.h: codec related structures needed by the demuxers and decoders
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*****************************************************************************
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* Copyright (C) 1999-2001 VLC authors and VideoLAN
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* $Id$
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*
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* Author: Gildas Bazin <gbazin@videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef VLC_CODECS_H
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#define VLC_CODECS_H 1
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#include <vlc_fourcc.h>
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/**
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* \file
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* This file defines codec related structures needed by the demuxers and decoders
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*/
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/* Structures exported to the demuxers and decoders */
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#if !(defined _GUID_DEFINED || defined GUID_DEFINED)
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#define GUID_DEFINED
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typedef struct _GUID
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{
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uint32_t Data1;
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uint16_t Data2;
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uint16_t Data3;
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uint8_t Data4[8];
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} GUID, *REFGUID, *LPGUID;
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#endif /* GUID_DEFINED */
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typedef GUID guid_t;
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#ifdef HAVE_ATTRIBUTE_PACKED
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# define ATTR_PACKED __attribute__((__packed__))
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#elif defined(__SUNPRO_C) || defined(_MSC_VER)
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# pragma pack(1)
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# define ATTR_PACKED
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#elif defined(__APPLE__)
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# pragma pack(push, 1)
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# define ATTR_PACKED
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#else
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# error FIXME
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#endif
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#ifndef _WAVEFORMATEX_
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#define _WAVEFORMATEX_
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typedef struct
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ATTR_PACKED
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_WAVEFORMATEX {
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uint16_t wFormatTag;
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uint16_t nChannels;
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uint32_t nSamplesPerSec;
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uint32_t nAvgBytesPerSec;
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uint16_t nBlockAlign;
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uint16_t wBitsPerSample;
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uint16_t cbSize;
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} WAVEFORMATEX, *PWAVEFORMATEX, *NPWAVEFORMATEX, *LPWAVEFORMATEX;
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#endif /* _WAVEFORMATEX_ */
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#ifndef _WAVEFORMATEXTENSIBLE_
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#define _WAVEFORMATEXTENSIBLE_
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typedef struct
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ATTR_PACKED
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_WAVEFORMATEXTENSIBLE {
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WAVEFORMATEX Format;
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union {
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uint16_t wValidBitsPerSample; /* bits of precision */
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uint16_t wSamplesPerBlock; /* valid if wBitsPerSample==0 */
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uint16_t wReserved; /* If neither applies, set to zero. */
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} Samples;
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uint32_t dwChannelMask; /* Channels present */
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GUID SubFormat;
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} WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
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#endif /* _WAVEFORMATEXTENSIBLE_ */
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#ifndef _WAVEFORMATEXTENSIBLE_IEC61937_
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#define _WAVEFORMATEXTENSIBLE_IEC61937_
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typedef struct
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ATTR_PACKED
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_WAVEFORMATEXTENSIBLE_IEC61937 {
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WAVEFORMATEXTENSIBLE FormatExt;
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uint32_t dwEncodedSamplesPerSec;
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uint32_t dwEncodedChannelCount;
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uint32_t dwAverageBytesPerSec;
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} WAVEFORMATEXTENSIBLE_IEC61937, *PWAVEFORMATEXTENSIBLE_IEC61937;
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#endif /* _WAVEFORMATEXTENSIBLE_IEC61937_ */
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#ifndef _WAVEHEADER_
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#define _WAVEHEADER_
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typedef struct
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ATTR_PACKED
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_WAVEHEADER {
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uint32_t MainChunkID;
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uint32_t Length;
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uint32_t ChunkTypeID;
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uint32_t SubChunkID;
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uint32_t SubChunkLength;
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uint16_t Format;
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uint16_t Modus;
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uint32_t SampleFreq;
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uint32_t BytesPerSec;
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uint16_t BytesPerSample;
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uint16_t BitsPerSample;
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uint32_t DataChunkID;
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uint32_t DataLength;
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} WAVEHEADER;
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#endif /* _WAVEHEADER_ */
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#ifndef _VLC_BITMAPINFOHEADER_
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#define _VLC_BITMAPINFOHEADER_
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typedef struct
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ATTR_PACKED
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{
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uint32_t biSize;
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uint32_t biWidth;
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uint32_t biHeight;
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uint16_t biPlanes;
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uint16_t biBitCount;
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uint32_t biCompression;
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uint32_t biSizeImage;
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uint32_t biXPelsPerMeter;
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uint32_t biYPelsPerMeter;
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uint32_t biClrUsed;
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uint32_t biClrImportant;
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} VLC_BITMAPINFOHEADER, *VLC_PBITMAPINFOHEADER, *VLC_LPBITMAPINFOHEADER;
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typedef struct
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ATTR_PACKED
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{
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VLC_BITMAPINFOHEADER bmiHeader;
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int bmiColors[1];
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} VLC_BITMAPINFO, *VLC_LPBITMAPINFO;
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#endif
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#ifndef _RECT32_
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#define _RECT32_
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typedef struct
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ATTR_PACKED
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{
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int left, top, right, bottom;
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} RECT32;
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#endif
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#ifndef _REFERENCE_TIME_
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#define _REFERENCE_TIME_
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typedef int64_t REFERENCE_TIME;
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#endif
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#ifndef _VIDEOINFOHEADER_
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#define _VIDEOINFOHEADER_
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typedef struct
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ATTR_PACKED
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{
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RECT32 rcSource;
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RECT32 rcTarget;
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uint32_t dwBitRate;
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uint32_t dwBitErrorRate;
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REFERENCE_TIME AvgTimePerFrame;
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VLC_BITMAPINFOHEADER bmiHeader;
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} VIDEOINFOHEADER;
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#endif
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#if defined(__SUNPRO_C) || defined(_MSC_VER)
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# pragma pack()
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#elif defined(__APPLE__) && !HAVE_ATTRIBUTE_PACKED
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# pragma pack(pop)
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#endif
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/* WAVE format wFormatTag IDs */
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/* See http://msdn.microsoft.com/en-us/library/aa904731%28v=vs.80%29.aspx */
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#define WAVE_FORMAT_UNKNOWN 0x0000 /* Microsoft Corporation */
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#define WAVE_FORMAT_PCM 0x0001 /* Microsoft Corporation */
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#define WAVE_FORMAT_ADPCM 0x0002 /* Microsoft Corporation */
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#define WAVE_FORMAT_IEEE_FLOAT 0x0003 /* Microsoft Corporation */
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#define WAVE_FORMAT_ALAW 0x0006 /* Microsoft Corporation */
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#define WAVE_FORMAT_MULAW 0x0007 /* Microsoft Corporation */
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#define WAVE_FORMAT_DTS_MS 0x0008 /* Microsoft Corporation */
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#define WAVE_FORMAT_WMAS 0x000a /* WMA 9 Speech */
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#define WAVE_FORMAT_IMA_ADPCM 0x0011 /* Intel Corporation */
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#define WAVE_FORMAT_YAMAHA_ADPCM 0x0020 /* Yamaha */
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#define WAVE_FORMAT_TRUESPEECH 0x0022 /* TrueSpeech */
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#define WAVE_FORMAT_GSM610 0x0031 /* Microsoft Corporation */
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#define WAVE_FORMAT_MSNAUDIO 0x0032 /* Microsoft Corporation */
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#define WAVE_FORMAT_AMR_NB_2 0x0038 /* AMR NB rogue */
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#define WAVE_FORMAT_MSG723 0x0042 /* Microsoft G.723 [G723.1] */
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#define WAVE_FORMAT_G726 0x0045 /* ITU-T standard */
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#define WAVE_FORMAT_MPEG 0x0050 /* Microsoft Corporation */
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#define WAVE_FORMAT_MPEGLAYER3 0x0055 /* ISO/MPEG Layer3 Format Tag */
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#define WAVE_FORMAT_AMR_NB 0x0057 /* AMR NB */
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#define WAVE_FORMAT_AMR_WB 0x0058 /* AMR Wideband */
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#define WAVE_FORMAT_G726_ADPCM 0x0064 /* G.726 ADPCM */
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#define WAVE_FORMAT_VOXWARE_RT29 0x0075 /* VoxWare MetaSound */
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#define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092 /* Sonic Foundry */
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#define WAVE_FORMAT_VIVOG723 0x0111 /* Vivo G.723.1 */
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#define WAVE_FORMAT_AAC 0x00FF /* */
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#define WAVE_FORMAT_AAC_MS 0xa106 /* Microsoft AAC */
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#define WAVE_FORMAT_SIPRO 0x0130 /* Sipro Lab Telecom Inc. */
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#define WAVE_FORMAT_WMA1 0x0160 /* WMA version 1 */
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#define WAVE_FORMAT_WMA2 0x0161 /* WMA (v2) 7, 8, 9 Series */
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#define WAVE_FORMAT_WMAP 0x0162 /* WMA 9 Professional */
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#define WAVE_FORMAT_WMAL 0x0163 /* WMA 9 Lossless */
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#define WAVE_FORMAT_CREATIVE_ADPCM 0x0200 /* Creative */
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#define WAVE_FORMAT_ULEAD_DV_AUDIO_NTSC 0x0215 /* Ulead */
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#define WAVE_FORMAT_ULEAD_DV_AUDIO_PAL 0x0216 /* Ulead */
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#define WAVE_FORMAT_ATRAC3 0x0270 /* Atrac3, != from MSDN doc */
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#define WAVE_FORMAT_SONY_ATRAC3 0x0272 /* Atrac3, != from MSDN doc */
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#define WAVE_FORMAT_IMC 0x0401
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#define WAVE_FORMAT_INDEO_AUDIO 0x0402 /* Indeo Audio Coder */
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#define WAVE_FORMAT_ON2_AVC 0x0500 /* VP7 */
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#define WAVE_FORMAT_ON2_AVC_2 0x0501 /* VP6 */
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#define WAVE_FORMAT_AAC_2 0x1601 /* Other AAC */
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#define WAVE_FORMAT_AAC_LATM 0x1602 /* AAC/LATM */
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#define WAVE_FORMAT_A52 0x2000 /* a52 */
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#define WAVE_FORMAT_DTS 0x2001 /* DTS */
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#define WAVE_FORMAT_AVCODEC_AAC 0x706D
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#define WAVE_FORMAT_DIVIO_AAC 0x4143 /* Divio's AAC */
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#define WAVE_FORMAT_GSM_AMR_FIXED 0x7A21 /* Fixed bitrate, no SID */
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#define WAVE_FORMAT_GSM_AMR 0x7A22 /* Variable bitrate, including SID */
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#define WAVE_FORMAT_DK3 0x0062
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#define WAVE_FORMAT_DK4 0x0061
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/* At least libavformat use that ID: from libavformat/riff.c ('Vo' == 0x566f)
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* { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
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*/
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#define WAVE_FORMAT_VORBIS 0x566f
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/* It seems that these IDs are used by braindead & obsolete VorbisACM encoder
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* (Windows only)
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* A few info is available except VorbisACM source (remember, Windows only)
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* (available on http://svn.xiph.org), but it seems that vo3+ at least is
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* made of Vorbis data encapsulated in Ogg container...
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*/
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#define WAVE_FORMAT_VORB_1 0x674f
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#define WAVE_FORMAT_VORB_2 0x6750
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#define WAVE_FORMAT_VORB_3 0x6751
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#define WAVE_FORMAT_VORB_1PLUS 0x676f
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#define WAVE_FORMAT_VORB_2PLUS 0x6770
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#define WAVE_FORMAT_VORB_3PLUS 0x6771
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#define WAVE_FORMAT_G723_1 0xa100
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#define WAVE_FORMAT_AAC_3 0xa106
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#define WAVE_FORMAT_SPEEX 0xa109 /* Speex audio */
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#define WAVE_FORMAT_FLAC 0xf1ac /* Xiph Flac */
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#if !defined(WAVE_FORMAT_EXTENSIBLE)
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#define WAVE_FORMAT_EXTENSIBLE 0xFFFE /* Microsoft */
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#endif
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/* GUID SubFormat IDs */
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#define VLC_KSDATAFORMAT_SUBTYPE_ATRAC3P {0xE923AABF, 0xCB58, 0x4471, {0xA1, 0x19, 0xFF, 0xFA, 0x01, 0xE4, 0xCE, 0x62}} /* Undocumented */
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#define VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}
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#define VLC_WAVEFORMATEX_GUIDBASE {0x00000000, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}} /* Generated from Wave Format */
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#define VLC_AMBISONIC_SUBTYPE_PCM {0x00000001, 0x0721, 0x11D3, {0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00}} /* AMBISONIC_B_FORMAT_PCM */
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#define VLC_AMBISONIC_SUBTYPE_IEEE_FLOAT {0x00000003, 0x0721, 0x11D3, {0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00}} /* AMBISONIC_B_FORMAT_IEEE_FLOAT */
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/* Microsoft speaker definitions */
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#define WAVE_SPEAKER_FRONT_LEFT 0x1
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#define WAVE_SPEAKER_FRONT_RIGHT 0x2
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#define WAVE_SPEAKER_FRONT_CENTER 0x4
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#define WAVE_SPEAKER_LOW_FREQUENCY 0x8
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#define WAVE_SPEAKER_BACK_LEFT 0x10
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#define WAVE_SPEAKER_BACK_RIGHT 0x20
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#define WAVE_SPEAKER_FRONT_LEFT_OF_CENTER 0x40
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#define WAVE_SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
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#define WAVE_SPEAKER_BACK_CENTER 0x100
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#define WAVE_SPEAKER_SIDE_LEFT 0x200
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#define WAVE_SPEAKER_SIDE_RIGHT 0x400
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#define WAVE_SPEAKER_TOP_CENTER 0x800
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#define WAVE_SPEAKER_TOP_FRONT_LEFT 0x1000
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#define WAVE_SPEAKER_TOP_FRONT_CENTER 0x2000
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#define WAVE_SPEAKER_TOP_FRONT_RIGHT 0x4000
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#define WAVE_SPEAKER_TOP_BACK_LEFT 0x8000
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#define WAVE_SPEAKER_TOP_BACK_CENTER 0x10000
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#define WAVE_SPEAKER_TOP_BACK_RIGHT 0x20000
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#define WAVE_SPEAKER_RESERVED 0x80000000
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static const struct
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{
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uint16_t i_tag;
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vlc_fourcc_t i_fourcc;
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const char *psz_name;
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}
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wave_format_tag_to_fourcc[] =
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{
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{ WAVE_FORMAT_PCM, VLC_FOURCC( 'a', 'r', 'a', 'w' ), "Raw audio" },
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{ WAVE_FORMAT_PCM, VLC_CODEC_S8, "PCM S8 audio" },
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{ WAVE_FORMAT_PCM, VLC_CODEC_S16L, "PCM S16L audio" },
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{ WAVE_FORMAT_PCM, VLC_CODEC_S24L, "PCM S24L audio" },
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{ WAVE_FORMAT_PCM, VLC_CODEC_S32L, "PCM S32L audio" },
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{ WAVE_FORMAT_ADPCM, VLC_CODEC_ADPCM_MS, "ADPCM" },
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{ WAVE_FORMAT_IEEE_FLOAT, VLC_FOURCC( 'a', 'f', 'l', 't' ), "IEEE Float audio" },
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{ WAVE_FORMAT_IEEE_FLOAT, VLC_CODEC_F32L, "PCM 32 (Float) audio" },
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{ WAVE_FORMAT_IEEE_FLOAT, VLC_CODEC_F64L, "PCM 64 (Float) audio" },
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{ WAVE_FORMAT_ALAW, VLC_CODEC_ALAW, "A-Law" },
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{ WAVE_FORMAT_MULAW, VLC_CODEC_MULAW, "Mu-Law" },
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{ WAVE_FORMAT_IMA_ADPCM, VLC_CODEC_ADPCM_IMA_WAV, "Ima-ADPCM" },
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{ WAVE_FORMAT_CREATIVE_ADPCM, VLC_CODEC_ADPCM_CREATIVE, "Creative ADPCM" },
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{ WAVE_FORMAT_YAMAHA_ADPCM, VLC_CODEC_ADPCM_YAMAHA, "Yamaha ADPCM" },
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{ WAVE_FORMAT_TRUESPEECH, VLC_CODEC_TRUESPEECH, "Truespeech" },
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{ WAVE_FORMAT_GSM610, VLC_CODEC_GSM_MS, "Microsoft WAV GSM" },
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{ WAVE_FORMAT_MSNAUDIO, VLC_CODEC_GSM_MS, "Microsoft MSN Audio" },
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{ WAVE_FORMAT_G726, VLC_CODEC_ADPCM_G726, "G.726 ADPCM" },
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{ WAVE_FORMAT_G726_ADPCM, VLC_CODEC_ADPCM_G726, "G.726 ADPCM" },
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{ WAVE_FORMAT_G723_1, VLC_CODEC_G723_1, "G.723.1" },
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{ WAVE_FORMAT_MSG723, VLC_CODEC_G723_1, "Microsoft G.723 [G723.1]" },
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{ WAVE_FORMAT_VIVOG723, VLC_CODEC_G723_1, "Vivo G.723.1" },
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{ WAVE_FORMAT_MPEGLAYER3, VLC_CODEC_MP3, "Mpeg Audio Layer 3" },
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{ WAVE_FORMAT_MPEG, VLC_CODEC_MPGA, "Mpeg Audio" },
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{ WAVE_FORMAT_AMR_NB, VLC_CODEC_AMR_NB, "AMR NB" },
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{ WAVE_FORMAT_AMR_NB_2, VLC_CODEC_AMR_NB, "AMR NB" },
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{ WAVE_FORMAT_AMR_WB, VLC_CODEC_AMR_WB, "AMR Wideband" },
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{ WAVE_FORMAT_SIPRO, VLC_CODEC_SIPR, "Sipr Audio" },
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{ WAVE_FORMAT_A52, VLC_CODEC_A52, "A/52" },
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{ WAVE_FORMAT_WMA1, VLC_CODEC_WMA1, "Window Media Audio v1" },
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{ WAVE_FORMAT_WMA2, VLC_CODEC_WMA2, "Window Media Audio v2" },
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{ WAVE_FORMAT_WMAP, VLC_CODEC_WMAP, "Window Media Audio 9 Professional" },
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{ WAVE_FORMAT_WMAL, VLC_CODEC_WMAL, "Window Media Audio 9 Lossless" },
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{ WAVE_FORMAT_WMAS, VLC_CODEC_WMAS, "Window Media Audio 9 Speech" },
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{ WAVE_FORMAT_ATRAC3, VLC_CODEC_ATRAC3, "Sony Atrac3" },
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{ WAVE_FORMAT_SONY_ATRAC3, VLC_CODEC_ATRAC3, "Sony Atrac3" },
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{ WAVE_FORMAT_DK3, VLC_CODEC_ADPCM_DK3, "Duck DK3" },
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{ WAVE_FORMAT_DK4, VLC_CODEC_ADPCM_DK4, "Duck DK4" },
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{ WAVE_FORMAT_DTS, VLC_CODEC_DTS, "DTS Coherent Acoustics" },
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{ WAVE_FORMAT_DTS_MS, VLC_CODEC_DTS, "DTS Coherent Acoustics" },
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{ WAVE_FORMAT_DIVIO_AAC, VLC_CODEC_MP4A, "MPEG-4 Audio (Divio)" },
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{ WAVE_FORMAT_AAC, VLC_CODEC_MP4A, "MPEG-4 Audio" },
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{ WAVE_FORMAT_AAC_2, VLC_CODEC_MP4A, "MPEG-4 Audio" },
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{ WAVE_FORMAT_AAC_3, VLC_CODEC_MP4A, "MPEG-4 Audio" },
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{ WAVE_FORMAT_AAC_LATM, VLC_CODEC_MP4A, "MPEG-4 Audio" },
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{ WAVE_FORMAT_AVCODEC_AAC, VLC_CODEC_MP4A, "MPEG-4 Audio" },
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{ WAVE_FORMAT_AAC_MS, VLC_CODEC_MP4A, "MPEG-4 Audio" },
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{ WAVE_FORMAT_VORBIS, VLC_CODEC_VORBIS, "Vorbis Audio" },
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{ WAVE_FORMAT_VORB_1, VLC_FOURCC( 'v', 'o', 'r', '1' ), "Vorbis 1 Audio" },
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{ WAVE_FORMAT_VORB_1PLUS, VLC_FOURCC( 'v', 'o', '1', '+' ), "Vorbis 1+ Audio" },
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{ WAVE_FORMAT_VORB_2, VLC_FOURCC( 'v', 'o', 'r', '2' ), "Vorbis 2 Audio" },
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{ WAVE_FORMAT_VORB_2PLUS, VLC_FOURCC( 'v', 'o', '2', '+' ), "Vorbis 2+ Audio" },
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{ WAVE_FORMAT_VORB_3, VLC_FOURCC( 'v', 'o', 'r', '3' ), "Vorbis 3 Audio" },
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{ WAVE_FORMAT_VORB_3PLUS, VLC_FOURCC( 'v', 'o', '3', '+' ), "Vorbis 3+ Audio" },
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{ WAVE_FORMAT_SPEEX, VLC_CODEC_SPEEX, "Speex Audio" },
|
|
{ WAVE_FORMAT_FLAC, VLC_CODEC_FLAC, "FLAC Audio" },
|
|
{ WAVE_FORMAT_GSM_AMR_FIXED, VLC_CODEC_AMR_NB, "GSM-AMR Audio CBR, no SID" },
|
|
{ WAVE_FORMAT_GSM_AMR, VLC_CODEC_AMR_NB, "GSM-AMR Audio VBR, SID" },
|
|
{ WAVE_FORMAT_ULEAD_DV_AUDIO_NTSC, VLC_CODEC_ULEAD_DV_AUDIO_NTSC, "Ulead DV audio NTSC" },
|
|
{ WAVE_FORMAT_ULEAD_DV_AUDIO_PAL, VLC_CODEC_ULEAD_DV_AUDIO_PAL, "Ulead DV audio PAL" },
|
|
{ WAVE_FORMAT_IMC, VLC_CODEC_IMC, "IMC" },
|
|
{ WAVE_FORMAT_INDEO_AUDIO, VLC_CODEC_INDEO_AUDIO, "Indeo Audio Coder" },
|
|
{ WAVE_FORMAT_VOXWARE_RT29, VLC_CODEC_METASOUND, "VoxWare MetaSound" },
|
|
{ WAVE_FORMAT_ON2_AVC, VLC_CODEC_ON2AVC, "On2 Audio for Video Codec (VP7)" },
|
|
{ WAVE_FORMAT_ON2_AVC_2, VLC_CODEC_ON2AVC, "On2 Audio for Video Codec (VP6)" },
|
|
|
|
{ WAVE_FORMAT_UNKNOWN, VLC_FOURCC( 'u', 'n', 'd', 'f' ), "Unknown" }
|
|
};
|
|
|
|
static inline void wf_tag_to_fourcc( uint16_t i_tag, vlc_fourcc_t *fcc,
|
|
const char **ppsz_name )
|
|
{
|
|
int i;
|
|
for( i = 0; wave_format_tag_to_fourcc[i].i_tag != 0; i++ )
|
|
{
|
|
if( wave_format_tag_to_fourcc[i].i_tag == i_tag ) break;
|
|
}
|
|
if( fcc ) *fcc = wave_format_tag_to_fourcc[i].i_fourcc;
|
|
if( ppsz_name ) *ppsz_name = wave_format_tag_to_fourcc[i].psz_name;
|
|
}
|
|
|
|
static inline void fourcc_to_wf_tag( vlc_fourcc_t fcc, uint16_t *pi_tag )
|
|
{
|
|
int i;
|
|
for( i = 0; wave_format_tag_to_fourcc[i].i_tag != 0; i++ )
|
|
{
|
|
if( wave_format_tag_to_fourcc[i].i_fourcc == fcc ) break;
|
|
}
|
|
if( pi_tag ) *pi_tag = wave_format_tag_to_fourcc[i].i_tag;
|
|
}
|
|
|
|
/* If wFormatTag is WAVEFORMATEXTENSIBLE, we must look at the SubFormat tag
|
|
* to determine the actual format. Microsoft has stopped giving out wFormatTag
|
|
* assignments in lieu of letting 3rd parties generate their own GUIDs
|
|
*/
|
|
static const struct
|
|
{
|
|
const GUID guid_tag;
|
|
const vlc_fourcc_t i_fourcc;
|
|
const char *psz_name;
|
|
}
|
|
sub_format_tag_to_fourcc[] =
|
|
{
|
|
{ VLC_AMBISONIC_SUBTYPE_PCM, VLC_FOURCC( 'a', 'r', 'a', 'w' ), "Ambisonic B format (PCM)" },
|
|
{ VLC_AMBISONIC_SUBTYPE_IEEE_FLOAT, VLC_FOURCC( 'a', 'f', 'l', 't' ), "Ambisonic B format (IEEE float)" },
|
|
{ VLC_KSDATAFORMAT_SUBTYPE_ATRAC3P, VLC_CODEC_ATRAC3P, "Sony Atrac3+" },
|
|
{ VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN, VLC_FOURCC( 'u', 'n', 'd', 'f' ), "Unknown" }
|
|
};
|
|
|
|
static inline int guidcmpbase( const GUID *s1, const GUID *s2 )
|
|
{
|
|
return( s1->Data2 == s2->Data2 &&
|
|
s1->Data3 == s2->Data3 && !memcmp( s1->Data4, s2->Data4, 8 ) );
|
|
}
|
|
|
|
/* compares two GUIDs, returns 1 if identical, 0 otherwise */
|
|
static inline int guidcmp( const GUID *s1, const GUID *s2 )
|
|
{
|
|
return( s1->Data1 == s2->Data1 && guidcmpbase( s1, s2 ) );
|
|
}
|
|
|
|
#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"
|
|
#define GUID_PRINT( guid ) \
|
|
(unsigned)(guid).Data1, \
|
|
(guid).Data2, \
|
|
(guid).Data3, \
|
|
(guid).Data4[0],(guid).Data4[1],(guid).Data4[2],(guid).Data4[3], \
|
|
(guid).Data4[4],(guid).Data4[5],(guid).Data4[6],(guid).Data4[7]
|
|
|
|
|
|
static inline void sf_tag_to_fourcc( const GUID *guid_tag,
|
|
vlc_fourcc_t *fcc, const char **ppsz_name )
|
|
{
|
|
int i;
|
|
bool b_found = false;
|
|
|
|
const GUID unknown = VLC_KSDATAFORMAT_SUBTYPE_UNKNOWN;
|
|
const GUID waveformatex = VLC_WAVEFORMATEX_GUIDBASE;
|
|
|
|
for( i = 0; !guidcmp( &sub_format_tag_to_fourcc[i].guid_tag,
|
|
&unknown ); i++ )
|
|
{
|
|
if( guidcmp( &sub_format_tag_to_fourcc[i].guid_tag, guid_tag ) )
|
|
{
|
|
b_found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( !b_found && guidcmpbase(guid_tag, &waveformatex) )
|
|
{
|
|
wf_tag_to_fourcc(guid_tag->Data1, fcc, ppsz_name);
|
|
}
|
|
else
|
|
{
|
|
if( fcc ) *fcc = sub_format_tag_to_fourcc[i].i_fourcc;
|
|
if( ppsz_name ) *ppsz_name = sub_format_tag_to_fourcc[i].psz_name;
|
|
}
|
|
}
|
|
|
|
#endif /* "codecs.h" */
|