| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2012 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with this library; if not, write to the Free |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| Sam Lantinga |
| slouken@libsdl.org |
| */ |
| #include "SDL_config.h" |
| |
| /* Allow access to a raw mixing buffer */ |
| |
| #ifndef _SDL_lowaudio_h |
| #define _SDL_lowaudio_h |
| |
| #include "../SDL_sysaudio.h" |
| |
| /* Hidden "this" pointer for the video functions */ |
| #define _THIS SDL_AudioDevice *this |
| #define NUM_BUFFERS 2 |
| |
| struct SharedMem { |
| HWAVEOUT sound; |
| WAVEHDR wHdr[NUM_BUFFERS]; |
| PCMWAVEFORMAT wFmt; |
| }; |
| |
| struct SDL_PrivateAudioData { |
| Uint8 *mixbuf; /* The raw allocated mixing buffer */ |
| struct SharedMem *shm; |
| int next_buffer; |
| }; |
| |
| #define shm (this->hidden->shm) |
| #define mixbuf (this->hidden->mixbuf) |
| #define next_buffer (this->hidden->next_buffer) |
| /* Old variable names */ |
| #endif /* _SDL_lowaudio_h */ |