src/audio/arts/SDL_artsaudio.h
author Sam Lantinga
Mon, 08 Dec 2008 00:25:42 +0000
branchSDL-1.2
changeset 4159 a1b03ba2fcd0
parent 1402 d910939febfa
child 6137 4720145f848b
permissions -rw-r--r--
Updated copyright date
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2009 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14 
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with this library; if not, write to the Free Software
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 #include "SDL_config.h"
    23 
    24 #ifndef _SDL_artscaudio_h
    25 #define _SDL_artscaudio_h
    26 
    27 #include <artsc.h>
    28 
    29 #include "../SDL_sysaudio.h"
    30 
    31 /* Hidden "this" pointer for the video functions */
    32 #define _THIS	SDL_AudioDevice *this
    33 
    34 struct SDL_PrivateAudioData {
    35 	/* The stream descriptor for the audio device */
    36 	arts_stream_t stream;
    37 
    38 	/* The parent process id, to detect when application quits */
    39 	pid_t parent;
    40 
    41 	/* Raw mixing buffer */
    42 	Uint8 *mixbuf;
    43 	int    mixlen;
    44 
    45 	/* Support for audio timing using a timer, in addition to select() */
    46 	float frame_ticks;
    47 	float next_frame;
    48 };
    49 #define FUDGE_TICKS	10	/* The scheduler overhead ticks per frame */
    50 
    51 /* Old variable names */
    52 #define stream			(this->hidden->stream)
    53 #define parent			(this->hidden->parent)
    54 #define mixbuf			(this->hidden->mixbuf)
    55 #define mixlen			(this->hidden->mixlen)
    56 #define frame_ticks		(this->hidden->frame_ticks)
    57 #define next_frame		(this->hidden->next_frame)
    58 
    59 #endif /* _SDL_artscaudio_h */
    60