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
32struct SDL_PrivateAudioData {
33	/* The file descriptor for the audio device */
34	int audio_fd;
35
36	Uint16 audio_fmt;        /* The app audio format */
37	Uint8 *mixbuf;           /* The app mixing buffer */
38	int ulaw_only;           /* Flag -- does hardware only output U-law? */
39	Uint8 *ulaw_buf;         /* The U-law mixing buffer */
40	Sint32 written;          /* The number of samples written */
41	int fragsize;            /* The audio fragment size in samples */
42	int frequency;           /* The audio frequency in KHz */
43};
44
45/* Old variable names */
46#define audio_fd		(this->hidden->audio_fd)
47#define audio_fmt		(this->hidden->audio_fmt)
48#define mixbuf			(this->hidden->mixbuf)
49#define ulaw_only		(this->hidden->ulaw_only)
50#define ulaw_buf		(this->hidden->ulaw_buf)
51#define written			(this->hidden->written)
52#define fragsize		(this->hidden->fragsize)
53#define frequency		(this->hidden->frequency)
54
55#endif /* _SDL_lowaudio_h */
56