src/audio/SDL_wave.h
author Sam Lantinga
Sun, 24 Jan 2010 21:10:53 +0000
changeset 3697 f7b03b6838cb
parent 2859 99210400e8b9
child 5262 b530ef003506
permissions -rw-r--r--
Fixed bug #926

Updated copyright to LGPL version 2.1 and year 2010
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2010 Sam Lantinga
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    This library is SDL_free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library 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 GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* WAVE files are little-endian */
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/*******************************************/
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/* Define values for Microsoft WAVE format */
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/*******************************************/
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#define RIFF		0x46464952      /* "RIFF" */
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#define WAVE		0x45564157      /* "WAVE" */
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#define FACT		0x74636166      /* "fact" */
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#define LIST		0x5453494c      /* "LIST" */
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#define FMT		0x20746D66      /* "fmt " */
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#define DATA		0x61746164      /* "data" */
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#define PCM_CODE	0x0001
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#define MS_ADPCM_CODE	0x0002
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#define IEEE_FLOAT_CODE	0x0003
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#define IMA_ADPCM_CODE	0x0011
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#define MP3_CODE	0x0055
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#define WAVE_MONO	1
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#define WAVE_STEREO	2
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/* Normally, these three chunks come consecutively in a WAVE file */
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typedef struct WaveFMT
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{
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/* Not saved in the chunk we read:
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	Uint32	FMTchunk;
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	Uint32	fmtlen;
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*/
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    Uint16 encoding;
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    Uint16 channels;            /* 1 = mono, 2 = stereo */
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    Uint32 frequency;           /* One of 11025, 22050, or 44100 Hz */
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    Uint32 byterate;            /* Average bytes per second */
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    Uint16 blockalign;          /* Bytes per sample block */
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    Uint16 bitspersample;       /* One of 8, 12, 16, or 4 for ADPCM */
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} WaveFMT;
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/* The general chunk found in the WAVE file */
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typedef struct Chunk
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{
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    Uint32 magic;
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    Uint32 length;
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    Uint8 *data;
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} Chunk;
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/* vi: set ts=4 sw=4 expandtab: */