src/audio/arts/SDL_artsaudio.h
author Sam Lantinga
Thu, 16 Feb 2006 10:11:48 +0000
changeset 1361 19418e4422cb
parent 1312 c9b51268668f
child 1402 d910939febfa
permissions -rw-r--r--
New configure-based build system. Still work in progress, but much improved
slouken@0
     1
/*
slouken@0
     2
    SDL - Simple DirectMedia Layer
slouken@1312
     3
    Copyright (C) 1997-2006 Sam Lantinga
slouken@0
     4
slouken@0
     5
    This library is free software; you can redistribute it and/or
slouken@1312
     6
    modify it under the terms of the GNU Lesser General Public
slouken@0
     7
    License as published by the Free Software Foundation; either
slouken@1312
     8
    version 2.1 of the License, or (at your option) any later version.
slouken@0
     9
slouken@0
    10
    This library is distributed in the hope that it will be useful,
slouken@0
    11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
slouken@0
    12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
slouken@1312
    13
    Lesser General Public License for more details.
slouken@0
    14
slouken@1312
    15
    You should have received a copy of the GNU Lesser General Public
slouken@1312
    16
    License along with this library; if not, write to the Free Software
slouken@1312
    17
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
slouken@0
    18
slouken@0
    19
    Sam Lantinga
slouken@252
    20
    slouken@libsdl.org
slouken@0
    21
*/
slouken@0
    22
slouken@0
    23
#ifndef _SDL_artscaudio_h
slouken@0
    24
#define _SDL_artscaudio_h
slouken@0
    25
slouken@0
    26
#include <artsc.h>
slouken@1361
    27
slouken@1361
    28
#include "../SDL_sysaudio.h"
slouken@0
    29
slouken@0
    30
/* Hidden "this" pointer for the video functions */
slouken@0
    31
#define _THIS	SDL_AudioDevice *this
slouken@0
    32
slouken@0
    33
struct SDL_PrivateAudioData {
slouken@0
    34
	/* The stream descriptor for the audio device */
slouken@0
    35
	arts_stream_t stream;
slouken@0
    36
slouken@0
    37
	/* The parent process id, to detect when application quits */
slouken@0
    38
	pid_t parent;
slouken@0
    39
slouken@0
    40
	/* Raw mixing buffer */
slouken@0
    41
	Uint8 *mixbuf;
slouken@0
    42
	int    mixlen;
slouken@0
    43
slouken@0
    44
	/* Support for audio timing using a timer, in addition to select() */
slouken@0
    45
	float frame_ticks;
slouken@0
    46
	float next_frame;
slouken@0
    47
};
slouken@0
    48
#define FUDGE_TICKS	10	/* The scheduler overhead ticks per frame */
slouken@0
    49
slouken@0
    50
/* Old variable names */
slouken@0
    51
#define stream			(this->hidden->stream)
slouken@0
    52
#define parent			(this->hidden->parent)
slouken@0
    53
#define mixbuf			(this->hidden->mixbuf)
slouken@0
    54
#define mixlen			(this->hidden->mixlen)
slouken@0
    55
#define frame_ticks		(this->hidden->frame_ticks)
slouken@0
    56
#define next_frame		(this->hidden->next_frame)
slouken@0
    57
slouken@0
    58
#endif /* _SDL_artscaudio_h */
slouken@0
    59