src/audio/SDL_wave.h
changeset 0 74212992fb08
child 252 e8157fcb3114
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/audio/SDL_wave.h	Thu Apr 26 16:45:43 2001 +0000
     1.3 @@ -0,0 +1,65 @@
     1.4 +/*
     1.5 +    SDL - Simple DirectMedia Layer
     1.6 +    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
     1.7 +
     1.8 +    This library is free software; you can redistribute it and/or
     1.9 +    modify it under the terms of the GNU Library General Public
    1.10 +    License as published by the Free Software Foundation; either
    1.11 +    version 2 of the License, or (at your option) any later version.
    1.12 +
    1.13 +    This library is distributed in the hope that it will be useful,
    1.14 +    but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 +    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    1.16 +    Library General Public License for more details.
    1.17 +
    1.18 +    You should have received a copy of the GNU Library General Public
    1.19 +    License along with this library; if not, write to the Free
    1.20 +    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    1.21 +
    1.22 +    Sam Lantinga
    1.23 +    slouken@devolution.com
    1.24 +*/
    1.25 +
    1.26 +#ifdef SAVE_RCSID
    1.27 +static char rcsid =
    1.28 + "@(#) $Id$";
    1.29 +#endif
    1.30 +
    1.31 +/* WAVE files are little-endian */
    1.32 +
    1.33 +/*******************************************/
    1.34 +/* Define values for Microsoft WAVE format */
    1.35 +/*******************************************/
    1.36 +#define RIFF		0x46464952		/* "RIFF" */
    1.37 +#define WAVE		0x45564157		/* "WAVE" */
    1.38 +#define FACT		0x74636166		/* "fact" */
    1.39 +#define LIST		0x5453494c		/* "LIST" */
    1.40 +#define FMT		0x20746D66		/* "fmt " */
    1.41 +#define DATA		0x61746164		/* "data" */
    1.42 +#define PCM_CODE	0x0001
    1.43 +#define MS_ADPCM_CODE	0x0002
    1.44 +#define IMA_ADPCM_CODE	0x0011
    1.45 +#define WAVE_MONO	1
    1.46 +#define WAVE_STEREO	2
    1.47 +
    1.48 +/* Normally, these three chunks come consecutively in a WAVE file */
    1.49 +typedef struct WaveFMT {
    1.50 +/* Not saved in the chunk we read:
    1.51 +	Uint32	FMTchunk;
    1.52 +	Uint32	fmtlen;
    1.53 +*/
    1.54 +	Uint16	encoding;	
    1.55 +	Uint16	channels;		/* 1 = mono, 2 = stereo */
    1.56 +	Uint32	frequency;		/* One of 11025, 22050, or 44100 Hz */
    1.57 +	Uint32	byterate;		/* Average bytes per second */
    1.58 +	Uint16	blockalign;		/* Bytes per sample block */
    1.59 +	Uint16	bitspersample;		/* One of 8, 12, 16, or 4 for ADPCM */
    1.60 +} WaveFMT;
    1.61 +
    1.62 +/* The general chunk found in the WAVE file */
    1.63 +typedef struct Chunk {
    1.64 +	Uint32 magic;
    1.65 +	Uint32 length;
    1.66 +	Uint8 *data;			/* Data includes magic and length */
    1.67 +} Chunk;
    1.68 +