src/audio/SDL_wave.h
author Sam Lantinga
Sun, 28 May 2006 13:04:16 +0000
branchSDL-1.3
changeset 1662 782fd950bd46
parent 1659 14717b52abc0
child 1994 6abc7e6f9817
permissions -rw-r--r--
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.

WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.

The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce

The headers are being converted to automatically generate doxygen documentation.
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2006 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 */
    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: */