src/audio/arts/SDL_artsaudio.h
author Sam Lantinga <slouken@libsdl.org>
Tue, 21 Mar 2006 06:45:47 +0000
changeset 1562 1d487a3fab41
parent 1402 d910939febfa
child 1662 782fd950bd46
child 4159 a1b03ba2fcd0
permissions -rw-r--r--
Fixed bug #18 Reordered the audio thread loop so there's no initial wait.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 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 Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 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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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#ifndef _SDL_artscaudio_h
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#define _SDL_artscaudio_h
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#include <artsc.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 stream descriptor for the audio device */
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	arts_stream_t stream;
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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 stream			(this->hidden->stream)
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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_artscaudio_h */
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