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annotate src/audio/windib/SDL_dibaudio.h @ 1675:d33dcfc3fde7 SDL-1.3

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Overlay functions are being replaced by YUV textures. If the driver doesn't support YUV textures, they can be emulated by backing the texture with an RGB texture and using the software conversion routines. Note that it doesn't make sense to lock a portion of a YV12 texture, since you'd need to return three pixel pointers and pitch values instead of the one that's available through the API. I'm guessing that's one of the reasons DirectX 9 doesn't support this format at all.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 11 Jun 2006 07:30:16 +0000
parents 782fd950bd46
children 5f6550e5184f 9dc81c6acaf5
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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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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 #define NUM_BUFFERS 2 /* -- Don't lower this! */
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33
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34 struct SDL_PrivateAudioData
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35 {
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36 HWAVEOUT sound;
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37 HANDLE audio_sem;
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38 Uint8 *mixbuf; /* The raw allocated mixing buffer */
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39 WAVEHDR wavebuf[NUM_BUFFERS]; /* Wave audio fragments */
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40 int next_buffer;
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41 };
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42
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43 /* Old variable names */
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44 #define sound (this->hidden->sound)
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45 #define audio_sem (this->hidden->audio_sem)
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46 #define mixbuf (this->hidden->mixbuf)
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47 #define wavebuf (this->hidden->wavebuf)
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48 #define next_buffer (this->hidden->next_buffer)
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49
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50 #endif /* _SDL_lowaudio_h */
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51 /* vi: set ts=4 sw=4 expandtab: */