SDL-1.2.14
[sdl_omap.git] / src / audio / mme / SDL_mmeaudio.h
CommitLineData
e14743d1 1/*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2009 Sam Lantinga
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
20 slouken@libsdl.org
21*/
22#include "SDL_config.h"
23
24/* Allow access to a raw mixing buffer */
25
26#ifndef _SDL_lowaudio_h
27#define _SDL_lowaudio_h
28
29#include "../SDL_sysaudio.h"
30
31/* Hidden "this" pointer for the video functions */
32#define _THIS SDL_AudioDevice *this
33#define NUM_BUFFERS 2
34
35struct SharedMem {
36 HWAVEOUT sound;
37 WAVEHDR wHdr[NUM_BUFFERS];
38 PCMWAVEFORMAT wFmt;
39};
40
41struct SDL_PrivateAudioData {
42 Uint8 *mixbuf; /* The raw allocated mixing buffer */
43 struct SharedMem *shm;
44 int next_buffer;
45};
46
47#define shm (this->hidden->shm)
48#define mixbuf (this->hidden->mixbuf)
49#define next_buffer (this->hidden->next_buffer)
50/* Old variable names */
51#endif /* _SDL_lowaudio_h */