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_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 61
