annotate include/SDL_main.h @ 1982:3b4ce57c6215

First shot at new audio data types (int32 and float32). Notable changes: - Converters between types are autogenerated. Instead of making multiple passes over the data with seperate filters for endianess, size, signedness, etc, converting between data types is always one specialized filter. This simplifies SDL_BuildAudioCVT(), which otherwise had a million edge cases with the new types, and makes the actually conversions more CPU cache friendly. Left a stub for adding specific optimized versions of these routines (SSE/MMX/Altivec, assembler, etc) - Autogenerated converters are built by SDL/src/audio/sdlgenaudiocvt.pl. This does not need to be run unless tweaking the code, and thus doesn't need integration into the build system. - Went through all the drivers and tried to weed out all the "Uint16" references that are better specified with the new SDL_AudioFormat typedef. - Cleaned out a bunch of hardcoded bitwise magic numbers and replaced them with new SDL_AUDIO_* macros. - Added initial float32 and int32 support code. Theoretically, existing drivers will push these through converters to get the data they want to feed to the hardware. Still TODO: - Optimize and debug new converters. - Update the CoreAudio backend to accept float32 data directly. - Other backends, too? - SDL_LoadWAV() needs to be updated to support int32 and float32 .wav files (both of which exist and can be generated by 'sox' for testing purposes). - Update the mixer to handle new datatypes. - Optionally update SDL_sound and SDL_mixer, etc.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 24 Aug 2006 12:10:46 +0000
parents 0e7becb566ee
children c6cd46639bc5
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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
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23 #ifndef _SDL_main_h
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24 #define _SDL_main_h
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25
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26 #include "SDL_stdinc.h"
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27
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28 /* Redefine main() on some platforms so that it is called by SDL */
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29
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30 #if defined(__WIN32__) || \
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31 (defined(__MWERKS__) && !defined(__BEOS__)) || \
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32 defined(__SYMBIAN32__)
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33
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34 #ifdef __cplusplus
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35 #define C_LINKAGE "C"
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36 #else
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37 #define C_LINKAGE
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38 #endif /* __cplusplus */
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39
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40 /* The application's main() function must be called with C linkage,
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41 and should be declared like this:
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42 #ifdef __cplusplus
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43 extern "C"
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44 #endif
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45 int main(int argc, char *argv[])
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46 {
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47 }
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48 */
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49 #define main SDL_main
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50
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51 /* The prototype for the application's main() function */
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52 extern C_LINKAGE int SDL_main(int argc, char *argv[]);
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53
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54
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55 /* From the SDL library code -- needed for registering the app on Win32 */
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56 #ifdef __WIN32__
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57
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58 #include "begin_code.h"
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59 #ifdef __cplusplus
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60 /* *INDENT-OFF* */
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61 extern "C" {
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62 /* *INDENT-ON* */
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63 #endif
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64
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65 /* This can be called to set the application class at startup */
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66 extern DECLSPEC int SDLCALL SDL_RegisterApp(char *name, Uint32 style,
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67 void *hInst);
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68 extern DECLSPEC void SDLCALL SDL_UnregisterApp(void);
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70 #ifdef __cplusplus
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71 /* *INDENT-OFF* */
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72 }
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73 /* *INDENT-ON* */
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74 #endif
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75 #include "close_code.h"
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76 #endif
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77
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78 #endif /* Need to redefine main()? */
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80 #endif /* _SDL_main_h */
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82 /* vi: set ts=4 sw=4 expandtab: */