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Sam Lantinga
Sam Lantinga committed Apr 26, 2001
0 parents commit 359adb4186fc9ad6b2351f6880d8a5ebcf3cb5ea

File 489 of 892 in 359adb4

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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@devolution.com
*/

#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif

#ifndef _SDL_dspaudio_h
#define _SDL_dspaudio_h

#include "SDL_sysaudio.h"

/* Hidden "this" pointer for the video functions */
#define _THIS SDL_AudioDevice *this

struct SDL_PrivateAudioData {
/* The file descriptor for the audio device */
int audio_fd;

/* The parent process id, to detect when application quits */
pid_t parent;

/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;

/* Support for audio timing using a timer, in addition to select() */
float frame_ticks;
float next_frame;
};
#define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */

/* Old variable names */
#define audio_fd (this->hidden->audio_fd)
#define parent (this->hidden->parent)
#define mixbuf (this->hidden->mixbuf)
#define mixlen (this->hidden->mixlen)
#define frame_ticks (this->hidden->frame_ticks)
#define next_frame (this->hidden->next_frame)

#endif /* _SDL_dspaudio_h */

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