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Merged 'default' into branch 'iOS-improvements'

This commit is contained in:
Alex Szpakowski 2014-07-31 03:14:10 -03:00
parent caad673f06 7552947654
commit bde54b7f34
54 changed files with 876 additions and 357 deletions
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1
.hgignore
View File

@ -76,6 +76,7 @@ test/Makefile
test/SDL2.dll
test/checkkeys
test/loopwave
test/loopwavequeue
test/testatomic
test/testaudioinfo
test/testautomation

8
INSTALL.txt
View File

@ -9,7 +9,7 @@ To compile and install SDL:
* Run './configure; make; make install'
Mac OS X with Xcode:
* Read README-macosx.txt
* Read docs/README-macosx.md
Mac OS X from the command line:
* Run './configure; make; make install'
@ -18,13 +18,13 @@ To compile and install SDL:
* Run './configure; make; make install'
Android:
* Read README-android.txt
* Read docs/README-android.md
iOS:
* Read README-ios.txt
* Read docs/README-ios.md
Using Cmake:
* Read README-cmake.txt
* Read docs/README-cmake.md
2. Look at the example programs in ./test, and check out the online
documentation at http://wiki.libsdl.org/

25
README.txt
View File

@ -14,29 +14,8 @@ 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.
SDL officially supports Windows, Mac OS X, Linux, iOS, and Android.
Support for other platforms may be found in the source code.
SDL is written in C, works natively with C++, and there are bindings
available for several other languages, including C# and Python.
This library is distributed under the zlib license, which can be found
in the file "COPYING.txt".
The best way to learn how to use SDL is to check out the header files in
the "include" subdirectory and the programs in the "test" subdirectory.
The header files and test programs are well commented and always up to date.
More documentation and FAQs are available online at:
http://wiki.libsdl.org/
If you need help with the library, or just want to discuss SDL related
issues, you can join the developers mailing list:
http://www.libsdl.org/mailing-list.php
If you want to report bugs or contribute patches, please submit them to
bugzilla:
http://bugzilla.libsdl.org/
More extensive documentation is available in the docs directory, starting
with README.md
Enjoy!
Sam Lantinga (slouken@libsdl.org)

4
VisualC/SDL/SDL_VS2008.vcproj
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@ -61,6 +61,7 @@
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6
VisualC/SDL/SDL_VS2010.vcxproj
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6
VisualC/SDL/SDL_VS2012.vcxproj
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VisualC/SDL/SDL_VS2013.vcxproj
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VisualC/SDLmain/SDLmain_VS2008.vcproj
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330
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</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -114,6 +115,7 @@
<CompileAs>Default</CompileAs>
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -133,6 +135,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -154,6 +157,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>

4
VisualC/SDLtest/SDLtest_VS2008.vcproj
View File

@ -56,6 +56,7 @@
SuppressStartupBanner="true"
DebugInformationFormat="1"
CompileAs="0"
OmitDefaultLibName="true"
/>
<Tool
Name="VCManagedResourceCompilerTool"
@ -123,6 +124,7 @@
SuppressStartupBanner="true"
DebugInformationFormat="1"
CompileAs="0"
OmitDefaultLibName="true"
/>
<Tool
Name="VCManagedResourceCompilerTool"
@ -316,6 +318,7 @@
SuppressStartupBanner="true"
DebugInformationFormat="1"
CompileAs="0"
OmitDefaultLibName="true"
/>
<Tool
Name="VCManagedResourceCompilerTool"
@ -381,6 +384,7 @@
SuppressStartupBanner="true"
DebugInformationFormat="1"
CompileAs="0"
OmitDefaultLibName="true"
/>
<Tool
Name="VCManagedResourceCompilerTool"

6
VisualC/SDLtest/SDLtest_VS2010.vcxproj
View File

@ -87,6 +87,7 @@
<CompileAs>Default</CompileAs>
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -110,6 +111,7 @@
<CompileAs>Default</CompileAs>
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -129,6 +131,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -150,6 +153,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -189,4 +193,4 @@
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>
</Project>

6
VisualC/SDLtest/SDLtest_VS2012.vcxproj
View File

@ -91,6 +91,7 @@
<CompileAs>Default</CompileAs>
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -114,6 +115,7 @@
<CompileAs>Default</CompileAs>
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -133,6 +135,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -154,6 +157,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -193,4 +197,4 @@
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>
</Project>

4
VisualC/SDLtest/SDLtest_VS2013.vcxproj
View File

@ -91,6 +91,7 @@
<CompileAs>Default</CompileAs>
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -114,6 +115,7 @@
<CompileAs>Default</CompileAs>
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -133,6 +135,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>
@ -154,6 +157,7 @@
<DebugInformationFormat>OldStyle</DebugInformationFormat>
<CompileAs>Default</CompileAs>
<ExceptionHandling>false</ExceptionHandling>
<OmitDefaultLibName>true</OmitDefaultLibName>
</ClCompile>
<Lib>
<SuppressStartupBanner>true</SuppressStartupBanner>

3
README-android.txt → docs/README-android.md
View File

@ -1,5 +1,4 @@
================================================================================
Simple DirectMedia Layer for Android
Android
================================================================================
Requirements:

4
README-cmake.txt → docs/README-cmake.md
View File

@ -1,6 +1,6 @@
CMake
================================================================================
CMake build system for SDL (www.cmake.org)
================================================================================
(www.cmake.org)
SDL's build system was traditionally based on autotools. Over time, this
approach has suffered from several issues across the different supported

3
README-directfb.txt → docs/README-directfb.md
View File

@ -1,4 +1,5 @@
SDL on DirectFB
DirectFB
========
Supports:

1
README-dynapi.txt → docs/README-dynapi.md
View File

@ -1,4 +1,3 @@
================================================================================
Dynamic API
================================================================================
Originally posted by Ryan at https://plus.google.com/103391075724026391227/posts/TB8UfnDYu4U

1
README-gesture.txt → docs/README-gesture.md
View File

@ -1,4 +1,3 @@
===========================================================================
Dollar Gestures
===========================================================================
SDL Provides an implementation of the $1 gesture recognition system. This allows for recording, saving, loading, and performing single stroke gestures.

3
README-hg.txt → docs/README-hg.md
View File

@ -1,3 +1,6 @@
Mercurial
=========
The latest development version of SDL is available via Mercurial.
Mercurial allows you to get up-to-the-minute fixes and enhancements;
as a developer works on a source tree, you can use "hg" to mirror that

3
README-ios.txt → docs/README-ios.md
View File

@ -1,3 +1,6 @@
iOS
======
==============================================================================
Building the Simple DirectMedia Layer for iPhone OS 5.1
==============================================================================

3
README-linux.txt → docs/README-linux.md
View File

@ -1,5 +1,4 @@
================================================================================
Simple DirectMedia Layer for Linux
Linux
================================================================================
By default SDL will only link against glibc, the rest of the features will be

3
README-macosx.txt → docs/README-macosx.md
View File

@ -1,5 +1,4 @@
==============================================================================
Using the Simple DirectMedia Layer with Mac OS X
Mac OS X
==============================================================================
These instructions are for people using Apple's Mac OS X (pronounced

3
README-nacl.txt → docs/README-nacl.md
View File

@ -1,5 +1,4 @@
================================================================================
Simple DirectMedia Layer for Native Client
Native Client
================================================================================
Requirements:

5
README-pandora.txt → docs/README-pandora.md
View File

@ -1,6 +1,7 @@
SDL 2.0 with open pandora console support ( http://openpandora.org/ )
Pandora
=====================================================================
( http://openpandora.org/ )
- A pandora specific video driver was written to allow SDL 2.0 with OpenGL ES
support to work on the pandora under the framebuffer. This driver do not have
input support for now, so if you use it you will have to add your own control code.

3
README-platforms.txt → docs/README-platforms.md
View File

@ -1,3 +1,6 @@
Platforms
=========
This is a list of the platforms SDL supports, and who maintains them.

2
README-porting.txt → docs/README-porting.md
View File

@ -1,3 +1,5 @@
Porting
=======
* Porting To A New Platform

2
README-psp.txt → docs/README-psp.md
View File

@ -1,3 +1,5 @@
PSP
======
SDL port for the Sony PSP contributed by
Captian Lex

3
README-raspberrypi.txt → docs/README-raspberrypi.md
View File

@ -1,5 +1,4 @@
================================================================================
SDL2 for Raspberry Pi
Raspberry Pi
================================================================================
Requirements:

1
README-touch.txt → docs/README-touch.md
View File

@ -1,3 +1,4 @@
Touch
===========================================================================
System Specific Notes
===========================================================================

2
README-wince.txt → docs/README-wince.md
View File

@ -1,3 +1,5 @@
WinCE
=====
Windows CE is no longer supported by SDL.

3
README-windows.txt → docs/README-windows.md
View File

@ -1,5 +1,4 @@
================================================================================
Simple DirectMedia Layer for Windows
Windows
================================================================================
================================================================================

3
README-winrt.txt → docs/README-winrt.md
View File

@ -1,5 +1,4 @@
================================================================================
Simple DirectMedia Layer for WinRT
WinRT
================================================================================
SDL/WinRT layer allows SDL2-based applications to run on many of Microsoft's

62
docs/README.md Normal file
View File

@ -0,0 +1,62 @@
Simple DirectMedia Layer {#mainpage}
========================
(SDL)
Version 2.0
---
http://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. 42
SDL officially supports Windows, Mac OS X, Linux, iOS, and Android.
Support for other platforms may be found in the source code.
SDL is written in C, works natively with C++, and there are bindings
available for several other languages, including C# and Python.
This library is distributed under the zlib license, which can be found
in the file "COPYING.txt".
The best way to learn how to use SDL is to check out the header files in
the "include" subdirectory and the programs in the "test" subdirectory.
The header files and test programs are well commented and always up to date.
More documentation and FAQs are available online at [the wiki](http://wiki.libsdl.org/)
- [Android](README-android.md)
- [CMake](README-cmake.md)
- [DirectFB](README-directfb.md)
- [DynAPI](README-dynapi.md)
- [Gesture](README-gesture.md)
- [Mercurial](README-hg.md)
- [iOS](README-ios.md)
- [Linux](README-linux.md)
- [OS X](README-macosx.md)
- [Native Client](README-nacl.md)
- [Pandora](README-pandora.md)
- [Supported Platforms](README-platforms.md)
- [Porting information](README-porting.md)
- [PSP](README-psp.md)
- [Raspberry Pi](README-raspberrypi.md)
- [Touch](README-touch.md)
- [WinCE](README-wince.md)
- [Windows](README-windows.md)
- [WinRT](README-winrt.md)
If you need help with the library, or just want to discuss SDL related
issues, you can join the [developers mailing list](http://www.libsdl.org/mailing-list.php)
If you want to report bugs or contribute patches, please submit them to
[bugzilla](http://bugzilla.libsdl.org/)
Enjoy!
Sam Lantinga <mailto:slouken@libsdl.org>

24
include/doxyfile → docs/doxyfile
View File

@ -38,7 +38,7 @@ PROJECT_NUMBER = 2.0.0
# If a relative path is entered, it will be relative to the location
# where doxygen was started. If left blank the current directory will be used.
OUTPUT_DIRECTORY = .
OUTPUT_DIRECTORY = ./output
# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
# 4096 sub-directories (in 2 levels) under the output directory of each output
@ -569,7 +569,7 @@ WARN_LOGFILE = ./doxygen_warn.txt
# directories like "/usr/src/myproject". Separate the files or directories
# with spaces.
INPUT = .
INPUT = . ../include
# This tag can be used to specify the character encoding of the source files
# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
@ -618,7 +618,8 @@ FILE_PATTERNS = *.c \
*.vhd \
*.vhdl \
*.h.in \
*.h.default
*.h.default \
*.md
# The RECURSIVE tag can be used to turn specify whether or not subdirectories
# should be searched for input files as well. Possible values are YES and NO.
@ -630,12 +631,15 @@ RECURSIVE = YES
# excluded from the INPUT source files. This way you can easily exclude a
# subdirectory from a directory tree whose root is specified with the INPUT tag.
EXCLUDE = ../doxy \
../test \
../Xcode \
../VisualC \
../VisualCE \
../Xcode-iOS
EXCLUDE = ../include/SDL_opengles2_gl2ext.h \
../include/SDL_opengles2_gl2platform.h \
../include/SDL_opengles2_khrplatform.h \
../include/SDL_opengl_glext.h \
../include/SDL_opengles2_gl2.h \
../include/SDL_opengles2.h \
../include/SDL_opengles.h \
../include/SDL_opengl.h \
# The EXCLUDE_SYMLINKS tag can be used select whether or not files or
# directories that are symbolic links (a Unix filesystem feature) are excluded
@ -1271,7 +1275,7 @@ SEARCH_INCLUDES = YES
# contain include files that are not input files but should be processed by
# the preprocessor.
INCLUDE_PATH =
INCLUDE_PATH =
# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
# patterns (like *.h and *.hpp) to filter out the header-files in the

35
include/SDL.h
View File

@ -25,41 +25,6 @@
* Main include header for the SDL library
*/
/**
* \mainpage Simple DirectMedia Layer (SDL)
*
* http://www.libsdl.org/
*
* \section intro_sec Introduction
*
* 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.
*
* SDL officially supports Windows, Mac OS X, Linux, iOS, and Android.
* Support for other platforms may be found in the source code.
*
* SDL is written in C, works natively with C++, and there are bindings
* available for several other languages, including C# and Python.
*
* This library is distributed under the zlib license, which can be found
* in the file "COPYING.txt".
*
* The best way to learn how to use SDL is to check out the header files in
* the "include" subdirectory and the programs in the "test" subdirectory.
* The header files and test programs are well commented and always up to date.
* More documentation and FAQs are available online at:
* http://wiki.libsdl.org/
*
* If you need help with the library, or just want to discuss SDL related
* issues, you can join the developers mailing list:
* http://www.libsdl.org/mailing-list.php
*
* Enjoy!
* Sam Lantinga (slouken@libsdl.org)
*/
#ifndef _SDL_H
#define _SDL_H

11
include/SDL_assert.h
View File

@ -141,16 +141,13 @@ extern DECLSPEC SDL_assert_state SDLCALL SDL_ReportAssertion(SDL_assert_data *,
#define SDL_enabled_assert(condition) \
do { \
while ( !(condition) ) { \
static struct SDL_assert_data assert_data = { \
static struct SDL_assert_data sdl_assert_data = { \
0, 0, #condition, 0, 0, 0, 0 \
}; \
const SDL_assert_state state = SDL_ReportAssertion(&assert_data, \
SDL_FUNCTION, \
SDL_FILE, \
SDL_LINE); \
if (state == SDL_ASSERTION_RETRY) { \
const SDL_assert_state sdl_assert_state = SDL_ReportAssertion(&sdl_assert_data, SDL_FUNCTION, SDL_FILE, SDL_LINE); \
if (sdl_assert_state == SDL_ASSERTION_RETRY) { \
continue; /* go again. */ \
} else if (state == SDL_ASSERTION_BREAK) { \
} else if (sdl_assert_state == SDL_ASSERTION_BREAK) { \
SDL_TriggerBreakpoint(); \
} \
break; /* not retrying. */ \

107
include/SDL_audio.h
View File

@ -155,6 +155,9 @@ typedef Uint16 SDL_AudioFormat;
*
* Once the callback returns, the buffer will no longer be valid.
* Stereo samples are stored in a LRLRLR ordering.
*
* You can choose to avoid callbacks and use SDL_QueueAudio() instead, if
* you like. Just open your audio device with a NULL callback.
*/
typedef void (SDLCALL * SDL_AudioCallback) (void *userdata, Uint8 * stream,
int len);
@ -171,8 +174,8 @@ typedef struct SDL_AudioSpec
Uint16 samples; /**< Audio buffer size in samples (power of 2) */
Uint16 padding; /**< Necessary for some compile environments */
Uint32 size; /**< Audio buffer size in bytes (calculated) */
SDL_AudioCallback callback;
void *userdata;
SDL_AudioCallback callback; /**< Callback that feeds the audio device (NULL to use SDL_QueueAudio()). */
void *userdata; /**< Userdata passed to callback (ignored for NULL callbacks). */
} SDL_AudioSpec;
@ -273,9 +276,11 @@ extern DECLSPEC const char *SDLCALL SDL_GetCurrentAudioDriver(void);
* to the audio buffer, and the length in bytes of the audio buffer.
* This function usually runs in a separate thread, and so you should
* protect data structures that it accesses by calling SDL_LockAudio()
* and SDL_UnlockAudio() in your code.
* and SDL_UnlockAudio() in your code. Alternately, you may pass a NULL
* pointer here, and call SDL_QueueAudio() with some frequency, to queue
* more audio samples to be played.
* - \c desired->userdata is passed as the first parameter to your callback
* function.
* function. If you passed a NULL callback, this value is ignored.
*
* The audio device starts out playing silence when it's opened, and should
* be enabled for playing by calling \c SDL_PauseAudio(0) when you are ready
@ -474,6 +479,100 @@ extern DECLSPEC void SDLCALL SDL_MixAudioFormat(Uint8 * dst,
SDL_AudioFormat format,
Uint32 len, int volume);
/**
* Queue more audio on non-callback devices.
*
* SDL offers two ways to feed audio to the device: you can either supply a
* callback that SDL triggers with some frequency to obtain more audio
* (pull method), or you can supply no callback, and then SDL will expect
* you to supply data at regular intervals (push method) with this function.
*
* There are no limits on the amount of data you can queue, short of
* exhaustion of address space. Queued data will drain to the device as
* necessary without further intervention from you. If the device needs
* audio but there is not enough queued, it will play silence to make up
* the difference. This means you will have skips in your audio playback
* if you aren't routinely queueing sufficient data.
*
* This function copies the supplied data, so you are safe to free it when
* the function returns. This function is thread-safe, but queueing to the
* same device from two threads at once does not promise which buffer will
* be queued first.
*
* You may not queue audio on a device that is using an application-supplied
* callback; doing so returns an error. You have to use the audio callback
* or queue audio with this function, but not both.
*
* You should not call SDL_LockAudio() on the device before queueing; SDL
* handles locking internally for this function.
*
* \param dev The device ID to which we will queue audio.
* \param data The data to queue to the device for later playback.
* \param len The number of bytes (not samples!) to which (data) points.
* \return zero on success, -1 on error.
*
* \sa SDL_GetQueuedAudioSize
* \sa SDL_ClearQueuedAudio
*/
extern DECLSPEC int SDLCALL SDL_QueueAudio(SDL_AudioDeviceID dev, const void *data, Uint32 len);
/**
* Get the number of bytes of still-queued audio.
*
* This is the number of bytes that have been queued for playback with
* SDL_QueueAudio(), but have not yet been sent to the hardware.
*
* Once we've sent it to the hardware, this function can not decide the exact
* byte boundary of what has been played. It's possible that we just gave the
* hardware several kilobytes right before you called this function, but it
* hasn't played any of it yet, or maybe half of it, etc.
*
* You may not queue audio on a device that is using an application-supplied
* callback; calling this function on such a device always returns 0.
* You have to use the audio callback or queue audio with SDL_QueueAudio(),
* but not both.
*
* You should not call SDL_LockAudio() on the device before querying; SDL
* handles locking internally for this function.
*
* \param dev The device ID of which we will query queued audio size.
* \return Number of bytes (not samples!) of queued audio.
*
* \sa SDL_QueueAudio
* \sa SDL_ClearQueuedAudio
*/
extern DECLSPEC Uint32 SDLCALL SDL_GetQueuedAudioSize(SDL_AudioDeviceID dev);
/**
* Drop any queued audio data waiting to be sent to the hardware.
*
* Immediately after this call, SDL_GetQueuedAudioSize() will return 0 and
* the hardware will start playing silence if more audio isn't queued.
*
* This will not prevent playback of queued audio that's already been sent
* to the hardware, as we can not undo that, so expect there to be some
* fraction of a second of audio that might still be heard. This can be
* useful if you want to, say, drop any pending music during a level change
* in your game.
*
* You may not queue audio on a device that is using an application-supplied
* callback; calling this function on such a device is always a no-op.
* You have to use the audio callback or queue audio with SDL_QueueAudio(),
* but not both.
*
* You should not call SDL_LockAudio() on the device before clearing the
* queue; SDL handles locking internally for this function.
*
* This function always succeeds and thus returns void.
*
* \param dev The device ID of which to clear the audio queue.
*
* \sa SDL_QueueAudio
* \sa SDL_GetQueuedAudioSize
*/
extern DECLSPEC void SDLCALL SDL_ClearQueuedAudio(SDL_AudioDeviceID dev);
/**
* \name Audio lock functions
*

240
src/audio/SDL_audio.c
View File

@ -178,6 +178,12 @@ SDL_AudioPlayDevice_Default(_THIS)
{ /* no-op. */
}
static int
SDL_AudioGetPendingBytes_Default(_THIS)
{
return 0;
}
static Uint8 *
SDL_AudioGetDeviceBuf_Default(_THIS)
{
@ -205,22 +211,34 @@ SDL_AudioOpenDevice_Default(_THIS, const char *devname, int iscapture)
return -1;
}
static SDL_INLINE SDL_bool
is_in_audio_device_thread(SDL_AudioDevice * device)
{
/* The device thread locks the same mutex, but not through the public API.
This check is in case the application, in the audio callback,
tries to lock the thread that we've already locked from the
device thread...just in case we only have non-recursive mutexes. */
if (device->thread && (SDL_ThreadID() == device->threadid)) {
return SDL_TRUE;
}
return SDL_FALSE;
}
static void
SDL_AudioLockDevice_Default(SDL_AudioDevice * device)
{
if (device->thread && (SDL_ThreadID() == device->threadid)) {
return;
if (!is_in_audio_device_thread(device)) {
SDL_LockMutex(device->mixer_lock);
}
SDL_LockMutex(device->mixer_lock);
}
static void
SDL_AudioUnlockDevice_Default(SDL_AudioDevice * device)
{
if (device->thread && (SDL_ThreadID() == device->threadid)) {
return;
if (!is_in_audio_device_thread(device)) {
SDL_UnlockMutex(device->mixer_lock);
}
SDL_UnlockMutex(device->mixer_lock);
}
@ -241,6 +259,7 @@ finalize_audio_entry_points(void)
FILL_STUB(ThreadInit);
FILL_STUB(WaitDevice);
FILL_STUB(PlayDevice);
FILL_STUB(GetPendingBytes);
FILL_STUB(GetDeviceBuf);
FILL_STUB(WaitDone);
FILL_STUB(CloseDevice);
@ -312,6 +331,181 @@ SDL_StreamDeinit(SDL_AudioStreamer * stream)
}
#endif
/* buffer queueing support... */
/* this expects that you managed thread safety elsewhere. */
static void
free_audio_queue(SDL_AudioBufferQueue *buffer)
{
while (buffer) {
SDL_AudioBufferQueue *next = buffer->next;
SDL_free(buffer);
buffer = next;
}
}
static void SDLCALL
SDL_BufferQueueDrainCallback(void *userdata, Uint8 *stream, int _len)
{
/* this function always holds the mixer lock before being called. */
Uint32 len = (Uint32) _len;
SDL_AudioDevice *device = (SDL_AudioDevice *) userdata;
SDL_AudioBufferQueue *buffer;
SDL_assert(device != NULL); /* this shouldn't ever happen, right?! */
SDL_assert(_len >= 0); /* this shouldn't ever happen, right?! */
while ((len > 0) && ((buffer = device->buffer_queue_head) != NULL)) {
const Uint32 avail = buffer->datalen - buffer->startpos;
const Uint32 cpy = SDL_min(len, avail);
SDL_assert(device->queued_bytes >= avail);
SDL_memcpy(stream, buffer->data + buffer->startpos, cpy);
buffer->startpos += cpy;
stream += cpy;
device->queued_bytes -= cpy;
len -= cpy;
if (buffer->startpos == buffer->datalen) { /* packet is done, put it in the pool. */
device->buffer_queue_head = buffer->next;
SDL_assert((buffer->next != NULL) || (buffer == device->buffer_queue_tail));
buffer->next = device->buffer_queue_pool;
device->buffer_queue_pool = buffer;
}
}
SDL_assert((device->buffer_queue_head != NULL) == (device->queued_bytes != 0));
if (len > 0) { /* fill any remaining space in the stream with silence. */
SDL_assert(device->buffer_queue_head == NULL);
SDL_memset(stream, device->spec.silence, len);
}
if (device->buffer_queue_head == NULL) {
device->buffer_queue_tail = NULL; /* in case we drained the queue entirely. */
}
}
int
SDL_QueueAudio(SDL_AudioDeviceID devid, const void *_data, Uint32 len)
{
SDL_AudioDevice *device = get_audio_device(devid);
const Uint8 *data = (const Uint8 *) _data;
SDL_AudioBufferQueue *orighead;
SDL_AudioBufferQueue *origtail;
Uint32 origlen;
Uint32 datalen;
if (!device) {
return -1; /* get_audio_device() will have set the error state */
}
if (device->spec.callback != SDL_BufferQueueDrainCallback) {
return SDL_SetError("Audio device has a callback, queueing not allowed");
}
current_audio.impl.LockDevice(device);
orighead = device->buffer_queue_head;
origtail = device->buffer_queue_tail;
origlen = origtail ? origtail->datalen : 0;
while (len > 0) {
SDL_AudioBufferQueue *packet = device->buffer_queue_tail;
SDL_assert(!packet || (packet->datalen <= SDL_AUDIOBUFFERQUEUE_PACKETLEN));
if (!packet || (packet->datalen >= SDL_AUDIOBUFFERQUEUE_PACKETLEN)) {
/* tail packet missing or completely full; we need a new packet. */
packet = device->buffer_queue_pool;
if (packet != NULL) {
/* we have one available in the pool. */
device->buffer_queue_pool = packet->next;
} else {
/* Have to allocate a new one! */
packet = (SDL_AudioBufferQueue *) SDL_malloc(sizeof (SDL_AudioBufferQueue));
if (packet == NULL) {
/* uhoh, reset so we've queued nothing new, free what we can. */
if (!origtail) {
packet = device->buffer_queue_head; /* whole queue. */
} else {
packet = origtail->next; /* what we added to existing queue. */
origtail->next = NULL;
origtail->datalen = origlen;
}
device->buffer_queue_head = orighead;
device->buffer_queue_tail = origtail;
device->buffer_queue_pool = NULL;
current_audio.impl.UnlockDevice(device);
free_audio_queue(packet); /* give back what we can. */
return SDL_OutOfMemory();
}
}
packet->datalen = 0;
packet->startpos = 0;
packet->next = NULL;
SDL_assert((device->buffer_queue_head != NULL) == (device->queued_bytes != 0));
if (device->buffer_queue_tail == NULL) {
device->buffer_queue_head = packet;
} else {
device->buffer_queue_tail->next = packet;
}
device->buffer_queue_tail = packet;
}
datalen = SDL_min(len, SDL_AUDIOBUFFERQUEUE_PACKETLEN - packet->datalen);
SDL_memcpy(packet->data + packet->datalen, data, datalen);
data += datalen;
len -= datalen;
packet->datalen += datalen;
device->queued_bytes += datalen;
}
current_audio.impl.UnlockDevice(device);
return 0;
}
Uint32
SDL_GetQueuedAudioSize(SDL_AudioDeviceID devid)
{
Uint32 retval = 0;
SDL_AudioDevice *device = get_audio_device(devid);
/* Nothing to do unless we're set up for queueing. */
if (device && (device->spec.callback == SDL_BufferQueueDrainCallback)) {
current_audio.impl.LockDevice(device);
retval = device->queued_bytes + current_audio.impl.GetPendingBytes(device);
current_audio.impl.UnlockDevice(device);
}
return retval;
}
void
SDL_ClearQueuedAudio(SDL_AudioDeviceID devid)
{
SDL_AudioDevice *device = get_audio_device(devid);
SDL_AudioBufferQueue *buffer = NULL;
if (!device) {
return; /* nothing to do. */
}
/* Blank out the device and release the mutex. Free it afterwards. */
current_audio.impl.LockDevice(device);
buffer = device->buffer_queue_head;
device->buffer_queue_tail = NULL;
device->buffer_queue_head = NULL;
device->queued_bytes = 0;
current_audio.impl.UnlockDevice(device);
free_audio_queue(buffer);
}
#if defined(__ANDROID__)
#include <android/log.h>
#endif
@ -788,6 +982,10 @@ close_audio_device(SDL_AudioDevice * device)
current_audio.impl.CloseDevice(device);
device->opened = 0;
}
free_audio_queue(device->buffer_queue_head);
free_audio_queue(device->buffer_queue_pool);
SDL_FreeAudioMem(device);
}
@ -802,11 +1000,6 @@ prepare_audiospec(const SDL_AudioSpec * orig, SDL_AudioSpec * prepared)
{
SDL_memcpy(prepared, orig, sizeof(SDL_AudioSpec));
if (orig->callback == NULL) {
SDL_SetError("SDL_OpenAudio() passed a NULL callback");
return 0;
}
if (orig->freq == 0) {
const char *env = SDL_getenv("SDL_AUDIO_FREQUENCY");
if ((!env) || ((prepared->freq = SDL_atoi(env)) == 0)) {
@ -859,7 +1052,6 @@ prepare_audiospec(const SDL_AudioSpec * orig, SDL_AudioSpec * prepared)
return 1;
}
static SDL_AudioDeviceID
open_audio_device(const char *devname, int iscapture,
const SDL_AudioSpec * desired, SDL_AudioSpec * obtained,
@ -938,7 +1130,7 @@ open_audio_device(const char *devname, int iscapture,
SDL_OutOfMemory();
return 0;
}
SDL_memset(device, '\0', sizeof(SDL_AudioDevice));
SDL_zerop(device);
device->spec = *obtained;
device->enabled = 1;
device->paused = 1;
@ -956,8 +1148,9 @@ open_audio_device(const char *devname, int iscapture,
/* force a device detection if we haven't done one yet. */
if ( ((iscapture) && (current_audio.inputDevices == NULL)) ||
((!iscapture) && (current_audio.outputDevices == NULL)) )
((!iscapture) && (current_audio.outputDevices == NULL)) ) {
SDL_GetNumAudioDevices(iscapture);
}
if (current_audio.impl.OpenDevice(device, devname, iscapture) < 0) {
close_audio_device(device);
@ -1031,6 +1224,25 @@ open_audio_device(const char *devname, int iscapture,
}
}
if (device->spec.callback == NULL) { /* use buffer queueing? */
/* pool a few packets to start. Enough for two callbacks. */
const int packetlen = SDL_AUDIOBUFFERQUEUE_PACKETLEN;
const int wantbytes = ((device->convert.needed) ? device->convert.len : device->spec.size) * 2;
const int wantpackets = (wantbytes / packetlen) + ((wantbytes % packetlen) ? packetlen : 0);
for (i = 0; i < wantpackets; i++) {
SDL_AudioBufferQueue *packet = (SDL_AudioBufferQueue *) SDL_malloc(sizeof (SDL_AudioBufferQueue));
if (packet) { /* don't care if this fails, we'll deal later. */
packet->datalen = 0;
packet->startpos = 0;
packet->next = device->buffer_queue_pool;
device->buffer_queue_pool = packet;
}
}
device->spec.callback = SDL_BufferQueueDrainCallback;
device->spec.userdata = device;
}
/* Find an available device ID and store the structure... */
for (id = min_id - 1; id < SDL_arraysize(open_devices); id++) {
if (open_devices[id] == NULL) {

27
src/audio/SDL_sysaudio.h
View File

@ -33,6 +33,26 @@ typedef struct SDL_AudioDevice SDL_AudioDevice;
/* Used by audio targets during DetectDevices() */
typedef void (*SDL_AddAudioDevice)(const char *name);
/* This is the size of a packet when using SDL_QueueAudio(). We allocate
these as necessary and pool them, under the assumption that we'll
eventually end up with a handful that keep recycling, meeting whatever
the app needs. We keep packing data tightly as more arrives to avoid
wasting space, and if we get a giant block of data, we'll split them
into multiple packets behind the scenes. My expectation is that most
apps will have 2-3 of these in the pool. 8k should cover most needs, but
if this is crippling for some embedded system, we can #ifdef this.
The system preallocates enough packets for 2 callbacks' worth of data. */
#define SDL_AUDIOBUFFERQUEUE_PACKETLEN (8 * 1024)
/* Used by apps that queue audio instead of using the callback. */
typedef struct SDL_AudioBufferQueue
{
Uint8 data[SDL_AUDIOBUFFERQUEUE_PACKETLEN]; /* packet data. */
Uint32 datalen; /* bytes currently in use in this packet. */
Uint32 startpos; /* bytes currently consumed in this packet. */
struct SDL_AudioBufferQueue *next; /* next item in linked list. */
} SDL_AudioBufferQueue;
typedef struct SDL_AudioDriverImpl
{
void (*DetectDevices) (int iscapture, SDL_AddAudioDevice addfn);
@ -40,6 +60,7 @@ typedef struct SDL_AudioDriverImpl
void (*ThreadInit) (_THIS); /* Called by audio thread at start */
void (*WaitDevice) (_THIS);
void (*PlayDevice) (_THIS);
int (*GetPendingBytes) (_THIS);
Uint8 *(*GetDeviceBuf) (_THIS);
void (*WaitDone) (_THIS);
void (*CloseDevice) (_THIS);
@ -119,6 +140,12 @@ struct SDL_AudioDevice
SDL_Thread *thread;
SDL_threadID threadid;
/* Queued buffers (if app not using callback). */
SDL_AudioBufferQueue *buffer_queue_head; /* device fed from here. */
SDL_AudioBufferQueue *buffer_queue_tail; /* queue fills to here. */
SDL_AudioBufferQueue *buffer_queue_pool; /* these are unused packets. */
Uint32 queued_bytes; /* number of bytes of audio data in the queue. */
/* * * */
/* Data private to this driver */
struct SDL_PrivateAudioData *hidden;

6
src/audio/xaudio2/SDL_xaudio2.c
View File

@ -58,7 +58,7 @@
/* The configure script already did any necessary checking */
# define SDL_XAUDIO2_HAS_SDK 1
#elif defined(__WINRT__)
/* WinRT always has access to the .the XAudio 2 SDK */
/* WinRT always has access to the the XAudio 2 SDK */
# define SDL_XAUDIO2_HAS_SDK
#else
/* XAudio2 exists as of the March 2008 DirectX SDK
@ -241,14 +241,14 @@ XAUDIO2_WaitDone(_THIS)
SDL_assert(!this->enabled); /* flag that stops playing. */
IXAudio2SourceVoice_Discontinuity(source);
#if SDL_XAUDIO2_WIN8
IXAudio2SourceVoice_GetState(source, &state, 0);
IXAudio2SourceVoice_GetState(source, &state, XAUDIO2_VOICE_NOSAMPLESPLAYED);
#else
IXAudio2SourceVoice_GetState(source, &state);
#endif
while (state.BuffersQueued > 0) {
SDL_SemWait(this->hidden->semaphore);
#if SDL_XAUDIO2_WIN8
IXAudio2SourceVoice_GetState(source, &state, 0);
IXAudio2SourceVoice_GetState(source, &state, XAUDIO2_VOICE_NOSAMPLESPLAYED);
#else
IXAudio2SourceVoice_GetState(source, &state);
#endif

8
src/core/linux/SDL_ibus.c
View File

@ -331,10 +331,10 @@ IBus_SetupConnection(SDL_DBusContext *dbus, const char* addr)
}
if(result){
DBusMessage *msg = dbus->message_new_method_call(IBUS_SERVICE,
input_ctx_path,
IBUS_INPUT_INTERFACE,
"SetCapabilities");
msg = dbus->message_new_method_call(IBUS_SERVICE,
input_ctx_path,
IBUS_INPUT_INTERFACE,
"SetCapabilities");
if(msg){
Uint32 caps = IBUS_CAP_FOCUS | IBUS_CAP_PREEDIT_TEXT;
dbus->message_append_args(msg,

3
src/dynapi/SDL_dynapi_overrides.h
View File

@ -588,3 +588,6 @@
#define SDL_SetWindowHitTest SDL_SetWindowHitTest_REAL
#define SDL_GetGlobalMouseState SDL_GetGlobalMouseState_REAL
#define SDL_HasAVX2 SDL_HasAVX2_REAL
#define SDL_QueueAudio SDL_QueueAudio_REAL
#define SDL_GetQueuedAudioSize SDL_GetQueuedAudioSize_REAL
#define SDL_ClearQueuedAudio SDL_ClearQueuedAudio_REAL

3
src/dynapi/SDL_dynapi_procs.h
View File

@ -620,3 +620,6 @@ SDL_DYNAPI_PROC(int,SDL_CaptureMouse,(SDL_bool a),(a),return)
SDL_DYNAPI_PROC(int,SDL_SetWindowHitTest,(SDL_Window *a, SDL_HitTest b, void *c),(a,b,c),return)
SDL_DYNAPI_PROC(Uint32,SDL_GetGlobalMouseState,(int *a, int *b),(a,b),return)
SDL_DYNAPI_PROC(SDL_bool,SDL_HasAVX2,(void),(),return)
SDL_DYNAPI_PROC(int,SDL_QueueAudio,(SDL_AudioDeviceID a, const void *b, Uint32 c),(a,b,c),return)
SDL_DYNAPI_PROC(Uint32,SDL_GetQueuedAudioSize,(SDL_AudioDeviceID a),(a),return)
SDL_DYNAPI_PROC(void,SDL_ClearQueuedAudio,(SDL_AudioDeviceID a),(a),)

27
src/main/windows/SDL_windows_main.c
View File

@ -10,9 +10,6 @@
/* Include this so we define UNICODE properly */
#include "../../core/windows/SDL_windows.h"
#include <stdio.h>
#include <stdlib.h>
/* Include the SDL main definition header */
#include "SDL.h"
#include "SDL_main.h"
@ -103,23 +100,11 @@ ParseCommandLine(char *cmdline, char **argv)
return (argc);
}
/* Show an error message */
static void
ShowError(const char *title, const char *message)
{
/* If USE_MESSAGEBOX is defined, you need to link with user32.lib */
#ifdef USE_MESSAGEBOX
MessageBox(NULL, message, title, MB_ICONEXCLAMATION | MB_OK);
#else
fprintf(stderr, "%s: %s\n", title, message);
#endif
}
/* Pop up an out of memory message, returns to Windows */
static BOOL
OutOfMemory(void)
{
ShowError("Fatal Error", "Out of memory - aborting");
SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Fatal Error", "Out of memory - aborting", NULL);
return FALSE;
}
@ -132,18 +117,10 @@ OutOfMemory(void)
int
console_main(int argc, char *argv[])
{
int status;
SDL_SetMainReady();
/* Run the application main() code */
status = SDL_main(argc, argv);
/* Exit cleanly, calling atexit() functions */
exit(status);
/* Hush little compiler, don't you cry... */
return 0;
return SDL_main(argc, argv);
}
/* This is where execution begins [windowed apps] */

3
src/render/opengl/SDL_render_gl.c
View File

@ -688,6 +688,9 @@ GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
GL_CheckError("", renderer);
renderdata->glGenTextures(1, &data->texture);
if (GL_CheckError("glGenTexures()", renderer) < 0) {
if (data->pixels) {
SDL_free(data->pixels);
}
SDL_free(data);
return -1;
}

2
src/render/software/SDL_draw.h
View File

@ -51,7 +51,7 @@ do { \
#define DRAW_SETPIXEL_BLEND(getpixel, setpixel) \
do { \
unsigned sr, sg, sb, sa; \
unsigned sr, sg, sb, sa = 0xFF; \
getpixel; \
sr = DRAW_MUL(inva, sr) + r; \
sg = DRAW_MUL(inva, sg) + g; \

67
src/stdlib/SDL_stdlib.c
View File

@ -370,44 +370,35 @@ _ftol2_sse()
_ftol();
}
/* 64-bit math operators for 32-bit systems */
void
__declspec(naked)
_allmul()
{
/* *INDENT-OFF* */
__asm {
push ebp
mov ebp,esp
push edi
push esi
push ebx
sub esp,0Ch
mov eax,dword ptr [ebp+10h]
mov edi,dword ptr [ebp+8]
mov ebx,eax
mov esi,eax
sar esi,1Fh
mov eax,dword ptr [ebp+8]
mul ebx
imul edi,esi
mov ecx,edx
mov dword ptr [ebp-18h],eax
mov edx,dword ptr [ebp+0Ch]
add ecx,edi
imul ebx,edx
mov eax,dword ptr [ebp-18h]
lea ebx,[ebx+ecx]
mov dword ptr [ebp-14h],ebx
mov edx,dword ptr [ebp-14h]
add esp,0Ch
pop ebx
pop esi
pop edi
pop ebp
ret 10h
}
/* *INDENT-ON* */
/* 64-bit math operators for 32-bit systems */
void
__declspec(naked)
_allmul()
{
/* *INDENT-OFF* */
__asm {
mov eax, dword ptr[esp+8]
mov ecx, dword ptr[esp+10h]
or ecx, eax
mov ecx, dword ptr[esp+0Ch]
jne hard
mov eax, dword ptr[esp+4]
mul ecx
ret 10h
hard:
push ebx
mul ecx
mov ebx, eax
mov eax, dword ptr[esp+8]
mul dword ptr[esp+14h]
add ebx, eax
mov eax, dword ptr[esp+8]
mul ecx
add edx, ebx
pop ebx
ret 10h
}
/* *INDENT-ON* */
}
void

1
src/video/SDL_sysvideo.h
View File

@ -93,6 +93,7 @@ struct SDL_Window
SDL_Surface *surface;
SDL_bool surface_valid;
SDL_bool is_hiding;
SDL_bool is_destroying;
SDL_WindowShaper *shaper;

6
src/video/SDL_video.c
View File

@ -1105,6 +1105,10 @@ SDL_UpdateFullscreenMode(SDL_Window * window, SDL_bool fullscreen)
CHECK_WINDOW_MAGIC(window,);
/* if we are in the process of hiding don't go back to fullscreen */
if ( window->is_hiding && fullscreen )
return;
#ifdef __MACOSX__
if (Cocoa_SetWindowFullscreenSpace(window, fullscreen)) {
window->last_fullscreen_flags = window->flags;
@ -1833,11 +1837,13 @@ SDL_HideWindow(SDL_Window * window)
return;
}
window->is_hiding = SDL_TRUE;
SDL_UpdateFullscreenMode(window, SDL_FALSE);
if (_this->HideWindow) {
_this->HideWindow(_this, window);
}
window->is_hiding = SDL_FALSE;
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_HIDDEN, 0, 0);
}

4
test/Makefile.in
View File

@ -10,6 +10,7 @@ LIBS = @LIBS@
TARGETS = \
checkkeys$(EXE) \
loopwave$(EXE) \
loopwavequeue$(EXE) \
testatomic$(EXE) \
testaudioinfo$(EXE) \
testautomation$(EXE) \
@ -71,6 +72,9 @@ checkkeys$(EXE): $(srcdir)/checkkeys.c
loopwave$(EXE): $(srcdir)/loopwave.c
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
loopwavequeue$(EXE): $(srcdir)/loopwavequeue.c
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
testresample$(EXE): $(srcdir)/testresample.c
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)

1
test/README
View File

@ -3,6 +3,7 @@ These are test programs for the SDL library:
checkkeys Watch the key events to check the keyboard
loopwave Audio test -- loop playing a WAV file
loopwavequeue Audio test -- loop playing a WAV file with SDL_QueueAudio
testaudioinfo Lists audio device capabilities
testcdrom Sample audio CD control program
testerror Tests multi-threaded error handling

127
test/loopwavequeue.c Normal file
View File

@ -0,0 +1,127 @@
/*
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Program to load a wave file and loop playing it using SDL sound queueing */
#include <stdio.h>
#include <stdlib.h>
#if HAVE_SIGNAL_H
#include <signal.h>
#endif
#include "SDL.h"
struct
{
SDL_AudioSpec spec;
Uint8 *sound; /* Pointer to wave data */
Uint32 soundlen; /* Length of wave data */
int soundpos; /* Current play position */
} wave;
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void
quit(int rc)
{
SDL_Quit();
exit(rc);
}
static int done = 0;
void
poked(int sig)
{
done = 1;
}
int
main(int argc, char *argv[])
{
int i;
char filename[4096];
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
/* Load the SDL library */
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return (1);
}
if (argc > 1) {
SDL_strlcpy(filename, argv[1], sizeof(filename));
} else {
SDL_strlcpy(filename, "sample.wav", sizeof(filename));
}
/* Load the wave file into memory */
if (SDL_LoadWAV(filename, &wave.spec, &wave.sound, &wave.soundlen) == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s\n", filename, SDL_GetError());
quit(1);
}
wave.spec.callback = NULL; /* we'll push audio. */
#if HAVE_SIGNAL_H
/* Set the signals */
#ifdef SIGHUP
signal(SIGHUP, poked);
#endif
signal(SIGINT, poked);
#ifdef SIGQUIT
signal(SIGQUIT, poked);
#endif
signal(SIGTERM, poked);
#endif /* HAVE_SIGNAL_H */
/* Initialize fillerup() variables */
if (SDL_OpenAudio(&wave.spec, NULL) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open audio: %s\n", SDL_GetError());
SDL_FreeWAV(wave.sound);
quit(2);
}
/*static x[99999]; SDL_QueueAudio(1, x, sizeof (x));*/
/* Let the audio run */
SDL_PauseAudio(0);
/* Note that we stuff the entire audio buffer into the queue in one
shot. Most apps would want to feed it a little at a time, as it
plays, but we're going for simplicity here. */
while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING))
{
/* The device from SDL_OpenAudio() is always device #1. */
const Uint32 queued = SDL_GetQueuedAudioSize(1);
SDL_Log("Device has %u bytes queued.\n", (unsigned int) queued);
if (queued <= 8192) { /* time to requeue the whole thing? */
if (SDL_QueueAudio(1, wave.sound, wave.soundlen) == 0) {
SDL_Log("Device queued %u more bytes.\n", (unsigned int) wave.soundlen);
} else {
SDL_Log("Device FAILED to queue %u more bytes: %s\n", (unsigned int) wave.soundlen, SDL_GetError());
}
}
SDL_Delay(100); /* let it play for awhile. */
}
/* Clean up on signal */
SDL_CloseAudio();
SDL_FreeWAV(wave.sound);
SDL_Quit();
return 0;
}
/* vi: set ts=4 sw=4 expandtab: */