view src/audio/alsa/SDL_alsa_audio.h @ 3491:1192adfc6d52

Add error messages for failure cases
author Sam Lantinga <slouken@libsdl.org>
date Wed, 25 Nov 2009 06:00:00 +0000
parents 4e83cdb58134
children 631173ffd68f
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifndef _ALSA_PCM_audio_h
#define _ALSA_PCM_audio_h

#include <alsa/asoundlib.h>

#include "../SDL_sysaudio.h"

/* Hidden "this" pointer for the audio functions */
#define _THIS	SDL_AudioDevice *this

struct SDL_PrivateAudioData
{
    /* The audio device handle */
    snd_pcm_t *pcm_handle;

    /* The parent process id, to detect when application quits */
    pid_t parent;

    /* Raw mixing buffer */
    Uint8 *mixbuf;
    int mixlen;
};

#endif /* _ALSA_PCM_audio_h */
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