Mercurial > sdl-ios-xcode
comparison src/audio/openbsd/SDL_openbsdaudio.h @ 37:3ad7157c6cfa
Added native OpenBSD audio driver (thanks vedge!)
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Sat, 26 May 2001 16:58:37 +0000 |
| parents | |
| children | e8157fcb3114 |
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| 36:13ee9f4834ea | 37:3ad7157c6cfa |
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| 1 /* | |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998, 1999, 2000, 2001 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@devolution.com | |
| 21 */ | |
| 22 | |
| 23 #ifndef _SDL_openbsdaudio_h | |
| 24 #define _SDL_openbsdaudio_h | |
| 25 | |
| 26 #include "SDL_sysaudio.h" | |
| 27 | |
| 28 #define _THIS SDL_AudioDevice *this | |
| 29 | |
| 30 struct SDL_PrivateAudioData | |
| 31 { | |
| 32 /* The file descriptor for the audio device */ | |
| 33 int audio_fd; | |
| 34 | |
| 35 /* The parent process id, to detect when application quits */ | |
| 36 pid_t parent; | |
| 37 | |
| 38 /* Raw mixing buffer */ | |
| 39 Uint8 *mixbuf; | |
| 40 int mixlen; | |
| 41 | |
| 42 /* Support for audio timing using a timer, in addition to select() */ | |
| 43 float frame_ticks; | |
| 44 float next_frame; | |
| 45 }; | |
| 46 | |
| 47 #define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */ | |
| 48 | |
| 49 /* Old variable names */ | |
| 50 #define audio_fd (this->hidden->audio_fd) | |
| 51 #define parent (this->hidden->parent) | |
| 52 #define mixbuf (this->hidden->mixbuf) | |
| 53 #define mixlen (this->hidden->mixlen) | |
| 54 #define frame_ticks (this->hidden->frame_ticks) | |
| 55 #define next_frame (this->hidden->next_frame) | |
| 56 | |
| 57 #endif /* _SDL_openbsdaudio_h */ |