/* $Id: riff.h 93115 2022-01-01 11:31:46Z vboxsync $ */ /** @file * IPRT - Resource Interchange File Format (RIFF), WAVE, ++. */ /* * Copyright (C) 2021-2022 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef IPRT_INCLUDED_formats_riff_h #define IPRT_INCLUDED_formats_riff_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include /** @defgroup grp_rt_formats_riff RIFF & WAVE structures and definitions * @ingroup grp_rt_formats * @{ */ /** * Resource interchange file format (RIFF) file header. */ typedef struct RTRIFFHDR { /** The 'RIFF' magic (RTRIFFHDR_MAGIC). */ uint32_t uMagic; /** The file size. */ uint32_t cbFile; /** The file type. */ uint32_t uFileType; } RTRIFFHDR; AssertCompileSize(RTRIFFHDR, 12); /** Pointer to a RIFF file header. */ typedef RTRIFFHDR *PRTRIFFHDR; /** Magic value for RTRIFFHDR::uMagic ('RIFF'). */ #define RTRIFFHDR_MAGIC RT_BE2H_U32_C(0x52494646) /** @name RIFF file types (RTRIFFHDR::uFileType) * @{ */ /** RIFF file type: WAVE (audio) */ #define RTRIFF_FILE_TYPE_WAVE RT_BE2H_U32_C(0x57415645) /** RIFF file type: AVI (video) */ #define RTRIFF_FILE_TYPE_AVI RT_BE2H_U32_C(0x41564920) /** @} */ /** * A RIFF chunk. */ typedef struct RTRIFFCHUNK { /** The chunk magic (four character code). */ uint32_t uMagic; /** The size of the chunk minus this header. */ uint32_t cbChunk; } RTRIFFCHUNK; AssertCompileSize(RTRIFFCHUNK, 8); /** Pointer to a RIFF chunk. */ typedef RTRIFFCHUNK *PRTRIFFCHUNK; /** * A RIFF list. */ typedef struct RTRIFFLIST { /** The list indicator (RTRIFFLIST_MAGIC). */ uint32_t uMagic; /** The size of the chunk minus this header. */ uint32_t cbChunk; /** The list type (four character code). */ uint32_t uListType; } RTRIFFLIST; AssertCompileSize(RTRIFFLIST, 12); /** Pointer to a RIFF list. */ typedef RTRIFFLIST *PRTRIFFLIST; /** Magic value for RTRIFFLIST::uMagic ('LIST'). */ #define RTRIFFLIST_MAGIC RT_BE2H_U32_C(0x4c495354) /** Generic 'INFO' list type. */ #define RTRIFFLIST_TYPE_INFO RT_BE2H_U32_C(0x494e464f) /** * Wave file format (WAVEFORMATEX w/o cbSize). * @see RTRIFFWAVEFMTCHUNK. */ typedef struct RTRIFFWAVEFMT { /** Audio format tag. */ uint16_t uFormatTag; /** Number of channels. */ uint16_t cChannels; /** Sample rate. */ uint32_t uHz; /** Byte rate (= uHz * cChannels * cBitsPerSample / 8) */ uint32_t cbRate; /** Frame size (aka block alignment). */ uint16_t cbFrame; /** Number of bits per sample. */ uint16_t cBitsPerSample; } RTRIFFWAVEFMT; AssertCompileSize(RTRIFFWAVEFMT, 16); /** Pointer to a wave file format structure. */ typedef RTRIFFWAVEFMT *PRTRIFFWAVEFMT; /** * Extensible wave file format (WAVEFORMATEXTENSIBLE). * @see RTRIFFWAVEFMTEXTCHUNK. */ #pragma pack(4) /* Override the uint64_t effect from RTUUID, so we can safely put it after RTRIFFHDR in a structure. */ typedef struct RTRIFFWAVEFMTEXT { /** The coreformat structure. */ RTRIFFWAVEFMT Core; /** Number of bytes of extra information after the core. */ uint16_t cbExtra; /** Number of valid bits per sample. */ uint16_t cValidBitsPerSample; /** The channel mask. */ uint32_t fChannelMask; /** The GUID of the sub-format. */ RTUUID SubFormat; } RTRIFFWAVEFMTEXT; #pragma pack() AssertCompileSize(RTRIFFWAVEFMTEXT, 16+2+22); /** Pointer to an extensible wave file format structure. */ typedef RTRIFFWAVEFMTEXT *PRTRIFFWAVEFMTEXT; /** RTRIFFWAVEFMT::uFormatTag value for PCM (WDK: WAVE_FORMAT_PCM). */ #define RTRIFFWAVEFMT_TAG_PCM UINT16_C(0x0001) /** RTRIFFWAVEFMT::uFormatTag value for extensible wave files (WDK: WAVE_FORMAT_EXTENSIBLE). */ #define RTRIFFWAVEFMT_TAG_EXTENSIBLE UINT16_C(0xfffe) /** Typical RTRIFFWAVEFMTEXT::cbExtra value (min). */ #define RTRIFFWAVEFMTEXT_EXTRA_SIZE UINT16_C(22) /** @name Channel IDs for RTRIFFWAVEFMTEXT::fChannelMask. * @{ */ #define RTRIFFWAVEFMTEXT_CH_ID_FL RT_BIT_32(0) /**< Front left. */ #define RTRIFFWAVEFMTEXT_CH_ID_FR RT_BIT_32(1) /**< Front right. */ #define RTRIFFWAVEFMTEXT_CH_ID_FC RT_BIT_32(2) /**< Front center */ #define RTRIFFWAVEFMTEXT_CH_ID_LFE RT_BIT_32(3) /**< Low frequency */ #define RTRIFFWAVEFMTEXT_CH_ID_BL RT_BIT_32(4) /**< Back left. */ #define RTRIFFWAVEFMTEXT_CH_ID_BR RT_BIT_32(5) /**< Back right. */ #define RTRIFFWAVEFMTEXT_CH_ID_FLC RT_BIT_32(6) /**< Front left of center. */ #define RTRIFFWAVEFMTEXT_CH_ID_FLR RT_BIT_32(7) /**< Front right of center. */ #define RTRIFFWAVEFMTEXT_CH_ID_BC RT_BIT_32(8) /**< Back center. */ #define RTRIFFWAVEFMTEXT_CH_ID_SL RT_BIT_32(9) /**< Side left. */ #define RTRIFFWAVEFMTEXT_CH_ID_SR RT_BIT_32(10) /**< Side right. */ #define RTRIFFWAVEFMTEXT_CH_ID_TC RT_BIT_32(11) /**< Top center. */ #define RTRIFFWAVEFMTEXT_CH_ID_TFL RT_BIT_32(12) /**< Top front left. */ #define RTRIFFWAVEFMTEXT_CH_ID_TFC RT_BIT_32(13) /**< Top front center. */ #define RTRIFFWAVEFMTEXT_CH_ID_TFR RT_BIT_32(14) /**< Top front right. */ #define RTRIFFWAVEFMTEXT_CH_ID_TBL RT_BIT_32(15) /**< Top back left. */ #define RTRIFFWAVEFMTEXT_CH_ID_TBC RT_BIT_32(16) /**< Top back center. */ #define RTRIFFWAVEFMTEXT_CH_ID_TBR RT_BIT_32(17) /**< Top back right. */ /** @} */ /** RTRIFFWAVEFMTEXT::SubFormat UUID string for PCM. */ #define RTRIFFWAVEFMTEXT_SUBTYPE_PCM "00000001-0000-0010-8000-00aa00389b71" /** * Wave file format chunk. */ typedef struct RTRIFFWAVEFMTCHUNK { /** Chunk header with RTRIFFWAVEFMT_MAGIC as magic. */ RTRIFFCHUNK Chunk; /** The wave file format. */ RTRIFFWAVEFMT Data; } RTRIFFWAVEFMTCHUNK; AssertCompileSize(RTRIFFWAVEFMTCHUNK, 8+16); /** Pointer to a wave file format chunk. */ typedef RTRIFFWAVEFMTCHUNK *PRTRIFFWAVEFMTCHUNK; /** Magic value for RTRIFFWAVEFMTCHUNK and RTRIFFWAVEFMTEXTCHUNK ('fmt '). */ #define RTRIFFWAVEFMT_MAGIC RT_BE2H_U32_C(0x666d7420) /** * Extensible wave file format chunk. */ typedef struct RTRIFFWAVEFMTEXTCHUNK { /** Chunk header with RTRIFFWAVEFMT_MAGIC as magic. */ RTRIFFCHUNK Chunk; /** The wave file format. */ RTRIFFWAVEFMTEXT Data; } RTRIFFWAVEFMTEXTCHUNK; AssertCompileSize(RTRIFFWAVEFMTEXTCHUNK, 8+16+2+22); /** Pointer to a wave file format chunk. */ typedef RTRIFFWAVEFMTEXTCHUNK *PRTRIFFWAVEFMTEXTCHUNK; /** * Wave file data chunk. */ typedef struct RTRIFFWAVEDATACHUNK { /** Chunk header with RTRIFFWAVEFMT_MAGIC as magic. */ RTRIFFCHUNK Chunk; /** Variable sized sample data. */ uint8_t abData[RT_FLEXIBLE_ARRAY_IN_NESTED_UNION]; } RTRIFFWAVEDATACHUNK; /** Magic value for RTRIFFWAVEFMT::uMagic ('data'). */ #define RTRIFFWAVEDATACHUNK_MAGIC RT_BE2H_U32_C(0x64617461) /** Magic value padding chunks ('PAD '). */ #define RTRIFFPADCHUNK_MAGIC RT_BE2H_U32_C(0x50414420) /** @} */ #endif /* !IPRT_INCLUDED_formats_riff_h */