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/* $Id: riff.h $ */
/** @file
* IPRT - Resource Interchange File Format (RIFF), WAVE, ++.
*/
/*
* Copyright (C) 2021-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef IPRT_INCLUDED_formats_riff_h
#define IPRT_INCLUDED_formats_riff_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/types.h>
#include <iprt/assertcompile.h>
/** @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 */
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