Mercurial > sdl-ios-xcode
annotate src/audio/SDL_wave.h @ 322:fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
The MacOS audio locking has been implemented, courtesy of Ryan Gordon
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 30 Mar 2002 19:48:56 +0000 |
| parents | f6ffac90895c |
| children | 90dfd3f5782c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* WAVE files are little-endian */ | |
| 29 | |
| 30 /*******************************************/ | |
| 31 /* Define values for Microsoft WAVE format */ | |
| 32 /*******************************************/ | |
| 33 #define RIFF 0x46464952 /* "RIFF" */ | |
| 34 #define WAVE 0x45564157 /* "WAVE" */ | |
| 35 #define FACT 0x74636166 /* "fact" */ | |
| 36 #define LIST 0x5453494c /* "LIST" */ | |
| 37 #define FMT 0x20746D66 /* "fmt " */ | |
| 38 #define DATA 0x61746164 /* "data" */ | |
| 39 #define PCM_CODE 0x0001 | |
| 40 #define MS_ADPCM_CODE 0x0002 | |
| 41 #define IMA_ADPCM_CODE 0x0011 | |
| 42 #define WAVE_MONO 1 | |
| 43 #define WAVE_STEREO 2 | |
| 44 | |
| 45 /* Normally, these three chunks come consecutively in a WAVE file */ | |
| 46 typedef struct WaveFMT { | |
| 47 /* Not saved in the chunk we read: | |
| 48 Uint32 FMTchunk; | |
| 49 Uint32 fmtlen; | |
| 50 */ | |
| 51 Uint16 encoding; | |
| 52 Uint16 channels; /* 1 = mono, 2 = stereo */ | |
| 53 Uint32 frequency; /* One of 11025, 22050, or 44100 Hz */ | |
| 54 Uint32 byterate; /* Average bytes per second */ | |
| 55 Uint16 blockalign; /* Bytes per sample block */ | |
| 56 Uint16 bitspersample; /* One of 8, 12, 16, or 4 for ADPCM */ | |
| 57 } WaveFMT; | |
| 58 | |
| 59 /* The general chunk found in the WAVE file */ | |
| 60 typedef struct Chunk { | |
| 61 Uint32 magic; | |
| 62 Uint32 length; | |
| 63 Uint8 *data; /* Data includes magic and length */ | |
| 64 } Chunk; | |
| 65 |