1/* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 Sam Lantinga 4 5 This library is SDL_free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken@libsdl.org 21*/ 22#include "SDL_config.h" 23 24/* WAVE files are little-endian */ 25 26/*******************************************/ 27/* Define values for Microsoft WAVE format */ 28/*******************************************/ 29#define RIFF 0x46464952 /* "RIFF" */ 30#define WAVE 0x45564157 /* "WAVE" */ 31#define FACT 0x74636166 /* "fact" */ 32#define LIST 0x5453494c /* "LIST" */ 33#define FMT 0x20746D66 /* "fmt " */ 34#define DATA 0x61746164 /* "data" */ 35#define PCM_CODE 0x0001 36#define MS_ADPCM_CODE 0x0002 37#define IMA_ADPCM_CODE 0x0011 38#define MP3_CODE 0x0055 39#define WAVE_MONO 1 40#define WAVE_STEREO 2 41 42/* Normally, these three chunks come consecutively in a WAVE file */ 43typedef struct WaveFMT { 44/* Not saved in the chunk we read: 45 Uint32 FMTchunk; 46 Uint32 fmtlen; 47*/ 48 Uint16 encoding; 49 Uint16 channels; /* 1 = mono, 2 = stereo */ 50 Uint32 frequency; /* One of 11025, 22050, or 44100 Hz */ 51 Uint32 byterate; /* Average bytes per second */ 52 Uint16 blockalign; /* Bytes per sample block */ 53 Uint16 bitspersample; /* One of 8, 12, 16, or 4 for ADPCM */ 54} WaveFMT; 55 56/* The general chunk found in the WAVE file */ 57typedef struct Chunk { 58 Uint32 magic; 59 Uint32 length; 60 Uint8 *data; 61} Chunk; 62 63