Mercurial > sdl-ios-xcode
annotate src/audio/dma/SDL_dmaaudio.h @ 1026:0f3aa6ab3341
Select patches included from The NetBSD Package Collection (www.pkgsrc.org)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 12 Jan 2005 06:04:48 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 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 | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #ifndef _SDL_dspaudio_h | |
| 29 #define _SDL_dspaudio_h | |
| 30 | |
| 31 #include "SDL_sysaudio.h" | |
| 32 | |
| 33 /* Hidden "this" pointer for the video functions */ | |
| 34 #define _THIS SDL_AudioDevice *this | |
| 35 | |
| 36 struct SDL_PrivateAudioData { | |
| 37 /* The file descriptor for the audio device */ | |
| 38 int audio_fd; | |
| 39 | |
| 40 /* The parent process id, to detect when application quits */ | |
| 41 pid_t parent; | |
| 42 | |
| 43 /* Raw mixing buffer */ | |
| 44 Uint8 *dma_buf; | |
| 45 int dma_len; | |
| 46 int num_buffers; | |
| 47 | |
| 48 /* Support for audio timing using a timer, in addition to select() */ | |
| 49 float frame_ticks; | |
| 50 float next_frame; | |
| 51 }; | |
| 52 #define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */ | |
| 53 | |
| 54 /* Old variable names */ | |
| 55 #define audio_fd (this->hidden->audio_fd) | |
| 56 #define parent (this->hidden->parent) | |
| 57 #define dma_buf (this->hidden->dma_buf) | |
| 58 #define dma_len (this->hidden->dma_len) | |
| 59 #define num_buffers (this->hidden->num_buffers) | |
| 60 #define frame_ticks (this->hidden->frame_ticks) | |
| 61 #define next_frame (this->hidden->next_frame) | |
| 62 | |
| 63 #endif /* _SDL_dspaudio_h */ |