Mercurial > sdl-ios-xcode
view src/audio/dma/SDL_dmaaudio.h @ 2218:6cc82cad8b77
1.3 video API design chat
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 07 Aug 2007 07:08:25 +0000 |
parents | 5f6550e5184f |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #ifndef _SDL_dmaaudio_h #define _SDL_dmaaudio_h #include "../SDL_sysaudio.h" /* Hidden "this" pointer for the audio functions */ #define _THIS SDL_AudioDevice *this struct SDL_PrivateAudioData { /* The file descriptor for the audio device */ int audio_fd; /* The parent process id, to detect when application quits */ pid_t parent; /* Raw mixing buffer */ Uint8 *dma_buf; int dma_len; int num_buffers; /* Support for audio timing using a timer, in addition to select() */ float frame_ticks; float next_frame; }; #define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */ /* Old variable names */ /* !!! FIXME: remove these. */ #define audio_fd (this->hidden->audio_fd) #define parent (this->hidden->parent) #define dma_buf (this->hidden->dma_buf) #define dma_len (this->hidden->dma_len) #define num_buffers (this->hidden->num_buffers) #define frame_ticks (this->hidden->frame_ticks) #define next_frame (this->hidden->next_frame) #endif /* _SDL_dmaaudio_h */ /* vi: set ts=4 sw=4 expandtab: */