1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2006 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_lowaudio_h

    25 #define _SDL_lowaudio_h

    26 

    27 #include "../SDL_sysaudio.h"

    28 

    29 /* Hidden "this" pointer for the video functions */

    30 #define _THIS	SDL_AudioDevice *this

    31 

    32 #define NUM_BUFFERS 2			/* -- Don't lower this! */

    33 

    34 struct SDL_PrivateAudioData {

    35 	HWAVEOUT sound;

    36 	HANDLE audio_sem;

    37 	Uint8 *mixbuf;		/* The raw allocated mixing buffer */

    38 	WAVEHDR wavebuf[NUM_BUFFERS];	/* Wave audio fragments */

    39 	int next_buffer;

    40 };

    41 

    42 /* Old variable names */

    43 #define sound			(this->hidden->sound)

    44 #define audio_sem 		(this->hidden->audio_sem)

    45 #define mixbuf			(this->hidden->mixbuf)

    46 #define wavebuf			(this->hidden->wavebuf)

    47 #define next_buffer		(this->hidden->next_buffer)

    48 

    49 #endif /* _SDL_lowaudio_h */