| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 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_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 | |