SDL_dibaudio.h revision e4c5d95ed37611acc6a186522315195b4ebfb9ef 
1/*
2    SDL - Simple DirectMedia Layer
3    Copyright (C) 1997-2012 Sam Lantinga
4
5    This library is 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#ifndef _SDL_lowaudio_h
25#define _SDL_lowaudio_h
26
27#include "../SDL_sysaudio.h"
28
29/* Hidden "this" pointer for the video functions */
30#define _THIS	SDL_AudioDevice *this
31
32#define NUM_BUFFERS 2			/* -- Don't lower this! */
33
34struct SDL_PrivateAudioData {
35	HWAVEOUT sound;
36    CRITICAL_SECTION audio_cs;
37    HANDLE           audio_event;
38	Uint8*           mixbuf;		/* The raw allocated mixing buffer */
39	WAVEHDR wavebuf[NUM_BUFFERS];	/* Wave audio fragments */
40    int              cur_buffer;
41	int next_buffer;
42};
43
44/* Old variable names */
45#define sound			(this->hidden->sound)
46#define audio_event     (this->hidden->audio_event)
47#define audio_cs        (this->hidden->audio_cs)
48#define mixbuf			(this->hidden->mixbuf)
49#define wavebuf			(this->hidden->wavebuf)
50#define cur_buffer      (this->hidden->cur_buffer)
51#define next_buffer		(this->hidden->next_buffer)
52
53#endif /* _SDL_lowaudio_h */
54