src/audio/mme/SDL_mmeaudio.h
author Sam Lantinga
Mon, 06 Feb 2006 08:28:51 +0000
changeset 1330 450721ad5436
parent 769 b8d311d90021
child 1338 604d73db6802
permissions -rw-r--r--
It's now possible to build SDL without any C runtime at all on Windows,
using Visual C++ 2005
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2004 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Library General Public
     7     License as published by the Free Software Foundation; either
     8     version 2 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     Library General Public License for more details.
    14 
    15     You should have received a copy of the GNU Library General Public
    16     License along with this library; if not, write to the Free
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 
    23 /* Allow access to a raw mixing buffer */
    24 
    25 #include <stdio.h>
    26 #include <stdlib.h>
    27 #include <string.h>
    28 #include <mme_api.h>
    29 
    30 #include "SDL_audio.h"
    31 #include "SDL_mutex.h"
    32 #include "SDL_timer.h"
    33 #include "SDL_audio_c.h"
    34 
    35 #ifndef _SDL_lowaudio_h
    36 #define _SDL_lowaudio_h
    37 #include "SDL_sysaudio.h"
    38 
    39 /* Hidden "this" pointer for the video functions */
    40 #define _THIS	SDL_AudioDevice *this
    41 #define NUM_BUFFERS 2
    42 
    43 struct SharedMem {
    44     HWAVEOUT sound;
    45     WAVEHDR wHdr[NUM_BUFFERS];
    46     PCMWAVEFORMAT wFmt;
    47 };
    48 
    49 struct SDL_PrivateAudioData {
    50     Uint8 *mixbuf;          /* The raw allocated mixing buffer */
    51     struct SharedMem *shm;
    52     int next_buffer;
    53 };
    54 
    55 #define shm			(this->hidden->shm)
    56 #define mixbuf			(this->hidden->mixbuf)
    57 #define next_buffer		(this->hidden->next_buffer)
    58 /* Old variable names */
    59 #endif /* _SDL_lowaudio_h */