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annotate src/audio/mint/SDL_mintaudio_mcsn.h @ 4001:6831b8723a85 SDL-1.2

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Don't initialize the audio buffer passed to the application's audio callback, since they are expected to entirely fill it with data or silence. For legacy apps that might expect the buffer to already have silence and thus may not fill the buffer in the callback, there's an environment variable to expose the old behaviour. Fixes Bugzilla #416.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 05 Jul 2007 02:24:36 +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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b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 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 #include "SDL_config.h"
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23
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24 /*
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25 MCSN control structure
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26
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27 Patrice Mandin
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28 */
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29
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30 #ifndef _SDL_mintaudio_mcsh_h
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31 #define _SDL_mintaudio_mcsh_h
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32
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33 typedef struct {
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34 unsigned short version; /* Version */
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35 unsigned short size; /* Size of structure */
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36
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37 unsigned short play; /* Replay capability */
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38 unsigned short record; /* Record capability */
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39 unsigned short dsp; /* DSP56K present */
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40 unsigned short pint; /* Interrupt at end of replay */
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41 unsigned short rint; /* Interrupt at end of record */
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42
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43 unsigned long res1; /* Frequency of external clock */
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44 unsigned long res2;
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45 unsigned long res3;
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46 unsigned long res4;
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47 } cookie_mcsn_t __attribute__((packed));
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48
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49 enum {
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50 MCSN_ST=0,
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51 MCSN_TT,
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52 MCSN_STE=MCSN_TT,
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53 MCSN_FALCON,
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54 MCSN_MAC=MCSN_FALCON
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55 };
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56
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57 #define SETSMPFREQ 7 /* Set sample frequency */
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58
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59 #endif /* _SDL_mintaudio_mcsh_h */