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Simple Directmedia Layer
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1a3b95a11e
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Ryan C. Gordon 1a3b95a11e audio: Replaced the resampler. Again. 
This time it's using real math from a real whitepaper instead of my previous
amateur, fast-but-low-quality attempt. The new resampler does "bandlimited
interpolation," as described here: https://ccrma.stanford.edu/~jos/resample/

The output appears to sound cleaner, especially at high frequencies, and of
course works with non-power-of-two rate conversions.

There are some obvious optimizations to be done to this still, and there is
other fallout: this doesn't resample a buffer in-place, the 2-channels-Sint16
fast path is gone because this resampler does a _lot_ of floating point math.
There is a nasty hack to make it work with SDL_AudioCVT.

It's possible these issues are solvable, but they aren't solved as of yet.
Still, I hope this effort is slouching in the right direction.
2017-09-21 02:51:14 -04:00
acinclude Fixed bug 3481 - Configure fails to detect dynamic library support on powerpc64le 2016-11-06 20:26:48 -08:00
android-project Update Android SDK required to API level 16 2017-08-31 15:12:08 -07:00
build-scripts Updated config.guess and config.sub, added config.sub.patch for NaCl and Emscripten build support 2017-09-09 08:03:23 -07:00
cmake vulkan: Include a copy of vulkan.h and vk_platform.h. 2017-08-27 23:25:12 -04:00
debian Make sure the libtool archives are installed 2017-09-09 08:34:46 -07:00
docs WinRT: minor formatting tweak in README-winrt 2017-09-19 10:33:08 -04:00
include Added a hint SDL_HINT_AUDIO_CATEGORY to control the audio category, 2017-09-15 17:27:32 -07:00
src audio: Replaced the resampler. Again. 2017-09-21 02:51:14 -04:00
test test: forgot to change a variable. 2017-08-29 18:25:55 -04:00
VisualC Added missing Visual Studio 2010 project for testvulkan 2017-08-28 17:28:09 -07:00
VisualC-WinRT Moved haptic source files into the proper folder 2017-08-30 09:44:38 -07:00
visualtest Renaming of guard header names to quiet -Wreserved-id-macro 2017-08-28 00:22:23 -07:00
Xcode Added SDL_vulkan.h to the Mac OS X framework headers 2017-09-04 22:51:28 -07:00
Xcode-iOS Updated iOS keyboard test to cover text input rect and orientation changes 2017-09-14 09:56:16 -07:00
.hgignore audio: Initial bits to enable audio capture support. 2016-08-01 00:18:56 -04:00
Android.mk Fixed bug 3789 - Android : small clean up 2017-08-30 14:25:01 -07:00
autogen.sh Don't use pushd/popd in autogen.sh; Ubuntu's /bin/sh doesn't support it. 2016-12-26 22:58:58 -05:00
BUGS.txt BUGS.txt: Changed mailing list link to discourse.libsdl.org. 2017-04-01 00:05:25 -04:00
cmake_uninstall.cmake.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
CMakeLists.txt Fixed the include path for khronos with Visual Studio 2017-09-10 10:25:36 -07:00
configure Fixed bug 3760 - RWops doesn't check for integer overflow when stdio_fseek only supports 32 bits 2017-09-09 08:36:37 -07:00
configure.in Fixed bug 3760 - RWops doesn't check for integer overflow when stdio_fseek only supports 32 bits 2017-09-09 08:36:37 -07:00
COPYING.txt Updated copyright for 2017 2017-01-01 18:33:28 -08:00
CREDITS.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
INSTALL.txt More HTTPS doc tweaks. 2017-02-16 16:59:07 -05:00
Makefile.in vulkan: Initial Vulkan support! 2017-08-27 22:15:57 -04:00
Makefile.minimal Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
Makefile.pandora pandora: Fixed compiler warning about redefining SDL_REVISION. 2017-06-18 23:00:27 +02:00
Makefile.psp PSP: Added missing object for generic TLS to Makefile. 2016-02-13 17:34:14 +01:00
Makefile.wiz Pandora: Updated SDL version in Makefile. 2016-07-19 21:01:30 +02:00
README-SDL.txt More HTTPS changes in the documentation. 2017-02-16 16:52:03 -05:00
README.txt readme: correct webpage URL to use HTTPS. 2017-02-16 13:30:34 -05:00
sdl2-config.cmake.in Applied Ubuntu patch bug_822210_fix_sdl2-config.cmake_whitespace.patch 2016-10-07 15:08:37 -07:00
sdl2-config.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
sdl2.m4 Fixed bug 3429 - Update AM_PATH_SDL2() to also check for SDL2.framework 2016-09-29 16:37:08 -07:00
sdl2.pc.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
SDL2.spec.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
SDL2Config.cmake Fixed bug 3651 - CMake build does not install CMake package configuration 2017-08-09 19:03:10 -07:00
TODO.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
VisualC.html Fixed two typos in documentation. 2016-01-12 22:23:53 +01:00
WhatsNew.txt Added a hint SDL_HINT_AUDIO_CATEGORY to control the audio category, 2017-09-15 17:27:32 -07:00

README.txt 

                         Simple DirectMedia Layer

                                  (SDL)

                                Version 2.0

---
https://www.libsdl.org/

Simple DirectMedia Layer is a cross-platform development library designed
to provide low level access to audio, keyboard, mouse, joystick, and graphics
hardware via OpenGL and Direct3D. It is used by video playback software,
emulators, and popular games including Valve's award winning catalog
and many Humble Bundle games.

More extensive documentation is available in the docs directory, starting
with README.md

Enjoy!
	Sam Lantinga				(slouken@libsdl.org)