src/audio/paudio/SDL_paudio.h
author Sam Lantinga <slouken@libsdl.org>
Wed, 06 Mar 2002 11:23:08 +0000
changeset 297 f6ffac90895c
parent 252 e8157fcb3114
child 769 b8d311d90021
permissions -rw-r--r--
Updated copyright information for 2002
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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 "@(#) $Id$";
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#endif
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#ifndef _SDL_paudaudio_h
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#define _SDL_paudaudio_h
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#include "SDL_sysaudio.h"
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/* Hidden "this" pointer for the video functions */
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#define _THIS	SDL_AudioDevice *this
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struct SDL_PrivateAudioData {
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	/* The file descriptor for the audio device */
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	int audio_fd;
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	/* The parent process id, to detect when application quits */
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	pid_t parent;
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	/* Raw mixing buffer */
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	Uint8 *mixbuf;
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	int    mixlen;
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	/* Support for audio timing using a timer, in addition to select() */
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	float frame_ticks;
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	float next_frame;
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};
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#define FUDGE_TICKS	10	/* The scheduler overhead ticks per frame */
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/* Old variable names */
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#define audio_fd		(this->hidden->audio_fd)
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#define parent			(this->hidden->parent)
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#define mixbuf			(this->hidden->mixbuf)
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#define mixlen			(this->hidden->mixlen)
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#define frame_ticks		(this->hidden->frame_ticks)
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#define next_frame		(this->hidden->next_frame)
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#endif /* _SDL_paudaudio_h */