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Diffstat (limited to 'Source/external/SDL2/src/audio/SDL_wave.h')
| -rw-r--r-- | Source/external/SDL2/src/audio/SDL_wave.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/Source/external/SDL2/src/audio/SDL_wave.h b/Source/external/SDL2/src/audio/SDL_wave.h new file mode 100644 index 0000000..5c60f75 --- /dev/null +++ b/Source/external/SDL2/src/audio/SDL_wave.h @@ -0,0 +1,77 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../SDL_internal.h" + +/* WAVE files are little-endian */ + +/*******************************************/ +/* Define values for Microsoft WAVE format */ +/*******************************************/ +#define RIFF 0x46464952 /* "RIFF" */ +#define WAVE 0x45564157 /* "WAVE" */ +#define FACT 0x74636166 /* "fact" */ +#define LIST 0x5453494c /* "LIST" */ +#define BEXT 0x74786562 /* "bext" */ +#define JUNK 0x4B4E554A /* "JUNK" */ +#define FMT 0x20746D66 /* "fmt " */ +#define DATA 0x61746164 /* "data" */ +#define PCM_CODE 0x0001 +#define MS_ADPCM_CODE 0x0002 +#define IEEE_FLOAT_CODE 0x0003 +#define IMA_ADPCM_CODE 0x0011 +#define MP3_CODE 0x0055 +#define EXTENSIBLE_CODE 0xFFFE +#define WAVE_MONO 1 +#define WAVE_STEREO 2 + +/* Normally, these three chunks come consecutively in a WAVE file */ +typedef struct WaveFMT +{ +/* Not saved in the chunk we read: + Uint32 FMTchunk; + Uint32 fmtlen; +*/ + Uint16 encoding; + Uint16 channels; /* 1 = mono, 2 = stereo */ + Uint32 frequency; /* One of 11025, 22050, or 44100 Hz */ + Uint32 byterate; /* Average bytes per second */ + Uint16 blockalign; /* Bytes per sample block */ + Uint16 bitspersample; /* One of 8, 12, 16, or 4 for ADPCM */ +} WaveFMT; + +/* The general chunk found in the WAVE file */ +typedef struct Chunk +{ + Uint32 magic; + Uint32 length; + Uint8 *data; +} Chunk; + +typedef struct WaveExtensibleFMT +{ + WaveFMT format; + Uint16 size; + Uint16 validbits; + Uint32 channelmask; + Uint8 subformat[16]; /* a GUID. */ +} WaveExtensibleFMT; + +/* vi: set ts=4 sw=4 expandtab: */ |