src/audio/SDL_wave.h
author Sam Lantinga
Sat, 06 Oct 2012 11:23:47 -0700
changeset 6565 1f3c0df426dc
parent 6138 4c64952a58fb
child 6885 700f1b25f77f
permissions -rw-r--r--
When using Xinerama, XVidMode always works on screen 0. Otherwise use the real X11 screen.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "SDL_config.h"
    22 
    23 /* WAVE files are little-endian */
    24 
    25 /*******************************************/
    26 /* Define values for Microsoft WAVE format */
    27 /*******************************************/
    28 #define RIFF		0x46464952      /* "RIFF" */
    29 #define WAVE		0x45564157      /* "WAVE" */
    30 #define FACT		0x74636166      /* "fact" */
    31 #define LIST		0x5453494c      /* "LIST" */
    32 #define FMT		0x20746D66      /* "fmt " */
    33 #define DATA		0x61746164      /* "data" */
    34 #define PCM_CODE	0x0001
    35 #define MS_ADPCM_CODE	0x0002
    36 #define IEEE_FLOAT_CODE	0x0003
    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 */
    43 typedef struct WaveFMT
    44 {
    45 /* Not saved in the chunk we read:
    46 	Uint32	FMTchunk;
    47 	Uint32	fmtlen;
    48 */
    49     Uint16 encoding;
    50     Uint16 channels;            /* 1 = mono, 2 = stereo */
    51     Uint32 frequency;           /* One of 11025, 22050, or 44100 Hz */
    52     Uint32 byterate;            /* Average bytes per second */
    53     Uint16 blockalign;          /* Bytes per sample block */
    54     Uint16 bitspersample;       /* One of 8, 12, 16, or 4 for ADPCM */
    55 } WaveFMT;
    56 
    57 /* The general chunk found in the WAVE file */
    58 typedef struct Chunk
    59 {
    60     Uint32 magic;
    61     Uint32 length;
    62     Uint8 *data;
    63 } Chunk;
    64 /* vi: set ts=4 sw=4 expandtab: */