1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2004 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@libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 #ifndef _ALSA_PCM_audio_h 25 #define _ALSA_PCM_audio_h 26 27 #define ALSA_PCM_OLD_HW_PARAMS_API 28 #define ALSA_PCM_OLD_SW_PARAMS_API 29 #include <alsa/asoundlib.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 audio device handle */ 38 snd_pcm_t *pcm_handle; 39 40 /* The parent process id, to detect when application quits */ 41 pid_t parent; 42 43 /* Raw mixing buffer */ 44 Uint8 *mixbuf; 45 int mixlen; 46 }; 47 48 /* Old variable names */ 49 #define pcm_handle (this->hidden->pcm_handle) 50 #define parent (this->hidden->parent) 51 #define mixbuf (this->hidden->mixbuf) 52 #define mixlen (this->hidden->mixlen) 53 54 #endif /* _ALSA_PCM_audio_h */ 55