Mercurial > sdl-ios-xcode
view include/SDL_config_amiga.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 | 4371d679ee12 |
| children |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #ifndef _SDL_config_amiga_h #define _SDL_config_amiga_h #include "SDL_platform.h" /* This is a set of defines to configure the SDL features */ #define SDL_HAS_64BIT_TYPE 1 /* Useful headers */ #define HAVE_SYS_TYPES_H 1 #define HAVE_STDIO_H 1 #define STDC_HEADERS 1 #define HAVE_STRING_H 1 #define HAVE_INTTYPES_H 1 #define HAVE_SIGNAL_H 1 /* C library functions */ #define HAVE_MALLOC 1 #define HAVE_CALLOC 1 #define HAVE_REALLOC 1 #define HAVE_FREE 1 #define HAVE_ALLOCA 1 #define HAVE_GETENV 1 #define HAVE_PUTENV 1 #define HAVE_MEMSET 1 #define HAVE_MEMCPY 1 #define HAVE_MEMMOVE 1 #define HAVE_MEMCMP 1 /* Enable various audio drivers */ #define SDL_AUDIO_DRIVER_AHI 1 #define SDL_AUDIO_DRIVER_DISK 1 #define SDL_AUDIO_DRIVER_DUMMY 1 /* Enable various cdrom drivers */ #define SDL_CDROM_DUMMY 1 /* Enable various input drivers */ #define SDL_JOYSTICK_AMIGA 1 /* Enable various shared object loading systems */ #define SDL_LOADSO_DUMMY 1 /* Enable various threading systems */ #define SDL_THREAD_AMIGA 1 /* Enable various timer systems */ #define SDL_TIMER_AMIGA 1 /* Enable various video drivers */ #define SDL_VIDEO_DRIVER_CYBERGRAPHICS 1 #define SDL_VIDEO_DRIVER_DUMMY 1 /* Enable OpenGL support */ #define SDL_VIDEO_OPENGL 1 #endif /* _SDL_config_amiga_h */