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annotate src/audio/alsa/SDL_alsa_audio.h @ 648:12a21d82a060

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Exposed SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() APIs
author Sam Lantinga <slouken@libsdl.org>
date Thu, 10 Jul 2003 07:46:19 +0000
parents 30935e76acb5
children 4f46fee887fe
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifndef _ALSA_PCM_audio_h
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24 #define _ALSA_PCM_audio_h
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25
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26 #include "SDL_sysaudio.h"
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27 #include <alsa/asoundlib.h>
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29 /* Hidden "this" pointer for the video functions */
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30 #define _THIS SDL_AudioDevice *this
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31
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32 struct SDL_PrivateAudioData {
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33 /* The audio device handle */
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34 snd_pcm_t *pcm_handle;
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35
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36 /* The parent process id, to detect when application quits */
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37 pid_t parent;
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38
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39 /* Raw mixing buffer */
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40 Uint8 *mixbuf;
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41 int mixlen;
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42 };
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43
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44 /* Old variable names */
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45 #define pcm_handle (this->hidden->pcm_handle)
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46 #define parent (this->hidden->parent)
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47 #define mixbuf (this->hidden->mixbuf)
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48 #define mixlen (this->hidden->mixlen)
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49
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50 #endif /* _ALSA_PCM_audio_h */