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annotate src/audio/mme/SDL_mmeaudio.h @ 756:10332c6fad2e

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te: Mon, 15 Dec 2003 08:25:14 -0800 PST From: "Andrew Bachmann" Subject: libSDL patches for beos video I created some patches to SDL: 1. YUV overlay support 2. maintain high refresh rate when changing resolutions to a lower resolution
author Sam Lantinga <slouken@libsdl.org>
date Tue, 16 Dec 2003 13:04:44 +0000
parents e92bcf2573cb
children b8d311d90021
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 /* Allow access to a raw mixing buffer */
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24
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28 #include <mme_api.h>
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29
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30 #include "SDL_audio.h"
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31 #include "SDL_mutex.h"
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32 #include "SDL_timer.h"
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33 #include "SDL_audio_c.h"
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34
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35 #ifndef _SDL_lowaudio_h
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36 #define _SDL_lowaudio_h
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37 #include "SDL_sysaudio.h"
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38
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39 /* Hidden "this" pointer for the video functions */
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40 #define _THIS SDL_AudioDevice *this
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41 #define NUM_BUFFERS 2
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42
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43 struct SharedMem {
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44 HWAVEOUT sound;
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45 WAVEHDR wHdr[NUM_BUFFERS];
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46 PCMWAVEFORMAT wFmt;
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47 };
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48
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49 struct SDL_PrivateAudioData {
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50 Uint8 *mixbuf; /* The raw allocated mixing buffer */
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51 struct SharedMem *shm;
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52 int next_buffer;
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53 };
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54
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55 #define shm (this->hidden->shm)
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56 #define mixbuf (this->hidden->mixbuf)
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57 #define next_buffer (this->hidden->next_buffer)
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58 /* Old variable names */
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59 #endif /* _SDL_lowaudio_h */