annotate src/audio/paudio/SDL_paudio.h @ 3967:d22892eaa1cf SDL-1.2

Make sure to check for glu.h before enabling glX support. We don't directly need GLU, but SDL_opengl.h tries to include it, and it shows that the workstation is misconfigured or incompletely configured if just this one header is missing. Fixes Bugzilla #336.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 15 Jun 2007 12:26:29 +0000
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children 782fd950bd46 a1b03ba2fcd0
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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_paudaudio_h
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25 #define _SDL_paudaudio_h
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26
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27 #include "../SDL_sysaudio.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 file descriptor for the audio device */
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34 int audio_fd;
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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 /* Support for audio timing using a timer, in addition to select() */
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44 float frame_ticks;
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45 float next_frame;
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46 };
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47 #define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */
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48
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49 /* Old variable names */
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50 #define audio_fd (this->hidden->audio_fd)
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51 #define parent (this->hidden->parent)
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52 #define mixbuf (this->hidden->mixbuf)
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53 #define mixlen (this->hidden->mixlen)
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54 #define frame_ticks (this->hidden->frame_ticks)
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55 #define next_frame (this->hidden->next_frame)
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56
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57 #endif /* _SDL_paudaudio_h */