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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2004 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_dspaudio_h
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#define _SDL_dspaudio_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_dspaudio_h */
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