annotate src/audio/sun/SDL_sunaudio.h @ 3798:c8b3d3d13ed1 SDL-ryan-multiple-audio-device

Audio bootstraps can now specify that a driver is only to be used if explicitly requested (for things like the "disk" driver that is always available but you would never want to default to using). Trimmed out code that can be handled by stubs in the core. The "dummy" driver is pretty damned small now. :)
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 21:27:53 +0000
parents 9dc81c6acaf5
children efdfe292bd88
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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 #include "SDL_config.h"
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23
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24 #ifndef _SDL_lowaudio_h
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25 #define _SDL_lowaudio_h
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26
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27 #include "../SDL_sysaudio.h"
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28
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29 /* Hidden "this" pointer for the audio 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 {
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34 /* The file descriptor for the audio device */
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35 int audio_fd;
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36
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37 SDL_AudioFormat audio_fmt; /* The app audio format */
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38 Uint8 *mixbuf; /* The app mixing buffer */
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39 int ulaw_only; /* Flag -- does hardware only output U-law? */
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40 Uint8 *ulaw_buf; /* The U-law mixing buffer */
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41 Sint32 written; /* The number of samples written */
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42 int fragsize; /* The audio fragment size in samples */
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43 int frequency; /* The audio frequency in KHz */
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44 };
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45
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46 /* Old variable names */
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47 #define audio_fd (this->hidden->audio_fd)
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48 #define audio_fmt (this->hidden->audio_fmt)
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49 #define mixbuf (this->hidden->mixbuf)
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50 #define ulaw_only (this->hidden->ulaw_only)
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51 #define ulaw_buf (this->hidden->ulaw_buf)
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52 #define written (this->hidden->written)
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53 #define fragsize (this->hidden->fragsize)
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54 #define frequency (this->hidden->frequency)
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55
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56 #endif /* _SDL_lowaudio_h */
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57 /* vi: set ts=4 sw=4 expandtab: */