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 (at) 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 CRITICAL_SECTION audio_cs; 37 HANDLE audio_event; 38 Uint8* mixbuf; /* The raw allocated mixing buffer */ 39 WAVEHDR wavebuf[NUM_BUFFERS]; /* Wave audio fragments */ 40 int cur_buffer; 41 int next_buffer; 42 }; 43 44 /* Old variable names */ 45 #define sound (this->hidden->sound) 46 #define audio_event (this->hidden->audio_event) 47 #define audio_cs (this->hidden->audio_cs) 48 #define mixbuf (this->hidden->mixbuf) 49 #define wavebuf (this->hidden->wavebuf) 50 #define cur_buffer (this->hidden->cur_buffer) 51 #define next_buffer (this->hidden->next_buffer) 52 53 #endif /* _SDL_lowaudio_h */ 54
