Merged changes in the trunk up to revision 39826.

Made a major amount of conflict resolution for code adaptation to
the animation system updates introduced in the Pepper branch recently
merged to the trunk.

Resolved conflicts:
source/blender/blenkernel/intern/anim_sys.c
source/blender/blenkernel/intern/library.c
source/blender/editors/animation/anim_channels_defines.c
source/blender/editors/animation/anim_channels_edit.c
source/blender/editors/animation/anim_filter.c
source/blender/editors/animation/keyframes_draw.c
source/blender/editors/animation/keyframes_edit.c
source/blender/editors/include/ED_anim_api.h
source/blender/editors/space_nla/nla_buttons.c
source/blender/editors/space_nla/nla_channels.c
source/blender/makesdna/DNA_action_types.h
source/blender/makesdna/intern/makesdna.c
source/blender/makesrna/intern/rna_main_api.c

build_files/scons/config/darwin-config.py

@@ -14,7 +14,7 @@ USE_SDK=True
 ###################     Cocoa & architecture settings      ##################
 #############################################################################
 WITH_GHOST_COCOA=True
-MACOSX_ARCHITECTURE = 'i386' # valid archs: ppc, i386, ppc64, x86_64
+MACOSX_ARCHITECTURE = 'x86_64' # valid archs: ppc, i386, ppc64, x86_64
 
 
 cmd = 'uname -p'
@@ -104,14 +104,26 @@ BF_FFMPEG_LIBPATH='${BF_FFMPEG}/lib'
 BF_FFMPEG_LIB = 'avcodec avdevice avformat avutil mp3lame swscale x264 xvidcore theora theoradec theoraenc vorbis vorbisenc vorbisfile ogg bz2'
 #bz2 is a standard osx dynlib
 
-# python 3.1 uses precompiled libraries in bf svn /lib by default
 BF_PYTHON_VERSION = '3.2'
+WITH_OSX_STATICPYTHON = True
+
+if WITH_OSX_STATICPYTHON:
+	# python 3.2 uses precompiled libraries in bf svn /lib by default
+
 	BF_PYTHON = LIBDIR + '/python'
 	BF_PYTHON_INC = '${BF_PYTHON}/include/python${BF_PYTHON_VERSION}'
 	# BF_PYTHON_BINARY = '${BF_PYTHON}/bin/python${BF_PYTHON_VERSION}'
 	BF_PYTHON_LIB = 'python${BF_PYTHON_VERSION}'
 	BF_PYTHON_LIBPATH = '${BF_PYTHON}/lib/python${BF_PYTHON_VERSION}'
 	# BF_PYTHON_LINKFLAGS = ['-u', '_PyMac_Error', '-framework', 'System']
+else:
+	# python 3.2 uses Python-framework additionally installed in /Library/Frameworks
+	
+	BF_PYTHON = '/Library/Frameworks/Python.framework/Versions/'
+	BF_PYTHON_INC = '${BF_PYTHON}${BF_PYTHON_VERSION}/include/python${BF_PYTHON_VERSION}m'
+	BF_PYTHON_BINARY = '${BF_PYTHON}${BF_PYTHON_VERSION}/bin/python${BF_PYTHON_VERSION}'
+	#BF_PYTHON_LIB = ''
+	BF_PYTHON_LIBPATH = '${BF_PYTHON}${BF_PYTHON_VERSION}/lib/python${BF_PYTHON_VERSION}/config-3.2m'
 	
 WITH_BF_OPENAL = True
 #different lib must be used  following version of gcc
@@ -315,6 +327,10 @@ if WITH_BF_QUICKTIME:
 	else:
 		PLATFORM_LINKFLAGS = PLATFORM_LINKFLAGS+['-framework','QuickTime']
 
+if not WITH_OSX_STATICPYTHON:
+		PLATFORM_LINKFLAGS = PLATFORM_LINKFLAGS+['-framework','Python']
+
+
 #note to build succesfully on 10.3.9 SDK you need to patch  10.3.9 by adding the SystemStubs.a lib from 10.4
 #for 10.7.sdk, SystemStubs needs to be excluded (lib doesn't exist anymore)
 if MACOSX_DEPLOYMENT_TARGET == '10.7':

build_files/scons/config/win32-vc-config.py

@@ -40,7 +40,7 @@ BF_JACK_INC = '${BF_JACK}/include ${BF_FFMPEG}/include/msvc'
 BF_JACK_LIB = 'libjack'
 BF_JACK_LIBPATH = '${BF_JACK}/lib'
 
-WITH_BF_SNDFILE = False
+WITH_BF_SNDFILE = True
 BF_SNDFILE = LIBDIR + '/sndfile'
 BF_SNDFILE_INC = '${BF_SNDFILE}/include'
 BF_SNDFILE_LIB = 'libsndfile-1'

build_files/scons/tools/Blender.py

@@ -536,7 +536,10 @@ def AppIt(target=None, source=None, env=None):
     print("Installing to %s"%(installdir))
     # TODO, use tar.
     python_zip = 'python_' + osxarch + '.zip' # set specific python_arch.zip
+    if env['WITH_OSX_STATICPYTHON']:
         print("unzipping to app-bundle: %s"%(python_zip))
+    else:
+        print("dynamic build - make sure to have python3.x-framework installed")
     bldroot = env.Dir('.').abspath
     binary = env['BINARYKIND']
      
@@ -569,6 +572,7 @@ def AppIt(target=None, source=None, env=None):
     commands.getoutput(cmd)
     cmd = 'cp %s/release/bin/%s/.Blanguages %s/%s.app/Contents/Resources/'%(bldroot,VERSION,installdir,binary)
     commands.getoutput(cmd)
+    if env['WITH_OSX_STATICPYTHON']:
         cmd = 'mkdir %s/%s.app/Contents/MacOS/%s/python/'%(installdir,binary, VERSION)
         commands.getoutput(cmd)
         cmd = 'unzip -q %s/release/%s -d %s/%s.app/Contents/MacOS/%s/python/'%(libdir,python_zip,installdir,binary,VERSION)

build_files/scons/tools/btools.py

@@ -78,7 +78,7 @@ def print_arguments(args, bc):
 
 def validate_arguments(args, bc):
     opts_list = [
-            'WITH_BF_PYTHON', 'WITH_BF_PYTHON_SAFETY', 'BF_PYTHON', 'BF_PYTHON_VERSION', 'BF_PYTHON_INC', 'BF_PYTHON_BINARY', 'BF_PYTHON_LIB', 'BF_PYTHON_LIBPATH', 'WITH_BF_STATICPYTHON', 'BF_PYTHON_LIB_STATIC', 'BF_PYTHON_DLL', 'BF_PYTHON_ABI_FLAGS', 
+            'WITH_BF_PYTHON', 'WITH_BF_PYTHON_SAFETY', 'BF_PYTHON', 'BF_PYTHON_VERSION', 'BF_PYTHON_INC', 'BF_PYTHON_BINARY', 'BF_PYTHON_LIB', 'BF_PYTHON_LIBPATH', 'WITH_BF_STATICPYTHON', 'WITH_OSX_STATICPYTHON', 'BF_PYTHON_LIB_STATIC', 'BF_PYTHON_DLL', 'BF_PYTHON_ABI_FLAGS', 
             'WITH_BF_OPENAL', 'BF_OPENAL', 'BF_OPENAL_INC', 'BF_OPENAL_LIB', 'BF_OPENAL_LIBPATH', 'WITH_BF_STATICOPENAL', 'BF_OPENAL_LIB_STATIC',
             'WITH_BF_SDL', 'BF_SDL', 'BF_SDL_INC', 'BF_SDL_LIB', 'BF_SDL_LIBPATH',
             'BF_LIBSAMPLERATE', 'BF_LIBSAMPLERATE_INC', 'BF_LIBSAMPLERATE_LIB', 'BF_LIBSAMPLERATE_LIBPATH', 'WITH_BF_STATICLIBSAMPLERATE', 'BF_LIBSAMPLERATE_LIB_STATIC',
@@ -230,6 +230,7 @@ def read_opts(env, cfg, args):
         ('BF_PYTHON_LIBPATH', 'Library path', ''),
         ('BF_PYTHON_LINKFLAGS', 'Python link flags', ''),
         (BoolVariable('WITH_BF_STATICPYTHON', 'Staticly link to python', False)),
+        (BoolVariable('WITH_OSX_STATICPYTHON', 'Staticly link to python', True)),
         ('BF_PYTHON_ABI_FLAGS', 'Python ABI flags (suffix in library version: m, mu, etc)', ''),
 
         (BoolVariable('BF_NO_ELBEEM', 'Disable Fluid Sim', False)),

doc/python_api/rst/bge.render.rst

@@ -215,6 +215,18 @@ Functions
    :type setting: string (lights, shaders, shadows, ramps, nodes, extra_textures)
    :rtype: boolean
 
+.. function:: setAnisotropicFiltering(level)
+
+   Set the anisotropic filtering level for textures.
+   
+   :arg level: The new anisotropic filtering level to use
+   :type level: integer (must be one of 1, 2, 4, 8, 16)
+   
+.. function:: getAnisotropicFiltering()
+
+   Get the anisotropic filtering level used for textures.
+   
+   :rtype: integer (one of 1, 2, 4, 8, 16)
    
 .. function:: drawLine(fromVec,toVec,color)
 

doc/python_api/rst/bge.types.rst

@@ -1539,6 +1539,67 @@ Game Types (bge.types)
       Return the value matching key, or the default value if its not found.
       :return: The key value or a default.
 
+   .. method:: playAction(name, start_frame, end_frame, layer=0, priority=0 blendin=0, play_mode=ACT_MODE_PLAY, layer_weight=0.0, ipo_flags=0, speed=1.0)
+
+      Plays an action.
+      
+      :arg name: the name of the action
+      :type name: string
+      :arg start: the start frame of the action
+      :type start: float
+      :arg end: the end frame of the action
+      :type end: float
+      :arg layer: the layer the action will play in (actions in different layers are added/blended together)
+      :type layer: integer
+      :arg priority: only play this action if there isn't an action currently playing in this layer with a higher (lower number) priority
+      :type priority: integer
+      :arg blendin: the amount of blending between this animation and the previous one on this layer
+      :type blendin: float
+      :arg play_mode: the play mode
+      :type play_mode: KX_ACTION_PLAY, KX_ACTION_LOOP, or KX_ACTION_PING_PONG
+      :arg layer_weight: how much of the previous layer to use for blending (0 = add)
+      :type layer_weight: float
+      :arg ipo_flags: flags for the old IPO behaviors (force, etc)
+      :type ipo_flags: int bitfield
+      :arg speed: the playback speed of the action as a factor (1.0 = normal speed, 2.0 = 2x speed, etc)
+      :type speed: float
+
+   .. method:: stopAction(layer=0)
+      
+      Stop playing the action on the given layer.
+      
+      :arg layer: The layer to stop playing.
+      :type layer: integer
+      
+   .. method:: getActionFrame(layer=0)
+   
+      Gets the current frame of the action playing in the supplied layer.
+      
+      :arg layer: The layer that you want to get the frame from.
+      :type layer: integer
+      
+      :return: The current frame of the action
+      :rtype: float
+      
+   .. method:: setActionFrame(frame, layer=0)
+   
+      Set the current frame of the action playing in the supplied layer.
+      
+      :arg layer: The layer where you want to set the frame
+      :type layer: integer
+      :arg frame: The frame to set the action to
+      :type frame: float
+
+   .. method:: isPlayingAction(layer=0)
+   
+       Checks to see if there is an action playing in the given layer.
+       
+       :arg layer: The layer to check for a playing action.
+       :type layer: integer
+       
+       :return: Whether or not the action is playing
+       :rtype: boolean
+
 .. class:: KX_IpoActuator(SCA_IActuator)
 
    IPO actuator activates an animation.

doc/python_api/sphinx_doc_gen.py

@@ -1236,7 +1236,6 @@ def rna2sphinx(BASEPATH):
 
     shutil.copy2(os.path.join(BASEPATH, "..", "rst", "change_log.rst"), BASEPATH)
 
-
     if not EXCLUDE_INFO_DOCS:
         for info, info_desc in INFO_DOCS:
             shutil.copy2(os.path.join(BASEPATH, "..", "rst", info), BASEPATH)

intern/audaspace/CMakeLists.txt

@@ -41,6 +41,8 @@ set(SRC
 	FX/AUD_DelayReader.cpp
 	FX/AUD_DoubleFactory.cpp
 	FX/AUD_DoubleReader.cpp
+	FX/AUD_DynamicIIRFilterFactory.cpp
+	FX/AUD_DynamicIIRFilterReader.cpp
 	FX/AUD_EffectFactory.cpp
 	FX/AUD_EffectReader.cpp
 	FX/AUD_EnvelopeFactory.cpp
@@ -66,6 +68,8 @@ set(SRC
 	FX/AUD_SuperposeReader.cpp
 	FX/AUD_VolumeFactory.cpp
 	intern/AUD_3DMath.h
+	intern/AUD_AnimateableProperty.cpp
+	intern/AUD_AnimateableProperty.h
 	intern/AUD_Buffer.cpp
 	intern/AUD_Buffer.h
 	intern/AUD_BufferReader.cpp
@@ -82,14 +86,21 @@ set(SRC
 	intern/AUD_ConverterFunctions.h
 	intern/AUD_ConverterReader.cpp
 	intern/AUD_ConverterReader.h
-	intern/AUD_DefaultMixer.cpp
-	intern/AUD_DefaultMixer.h
 	intern/AUD_FileFactory.cpp
 	intern/AUD_FileFactory.h
+	intern/AUD_FileWriter.cpp
+	intern/AUD_FileWriter.h
 	intern/AUD_I3DDevice.h
+	intern/AUD_I3DHandle.h
 	intern/AUD_IDevice.h
 	intern/AUD_IFactory.h
+	intern/AUD_IHandle.h
 	intern/AUD_IReader.h
+	intern/AUD_IWriter.h
+	intern/AUD_JOSResampleFactory.cpp
+	intern/AUD_JOSResampleFactory.h
+	intern/AUD_JOSResampleReader.cpp
+	intern/AUD_JOSResampleReader.h
 	intern/AUD_LinearResampleFactory.cpp
 	intern/AUD_LinearResampleFactory.h
 	intern/AUD_LinearResampleReader.cpp
@@ -104,9 +115,16 @@ set(SRC
 	intern/AUD_ReadDevice.cpp
 	intern/AUD_ReadDevice.h
 	intern/AUD_Reference.h
+	intern/AUD_ReferenceHandler.cpp
 	intern/AUD_ResampleFactory.h
+	intern/AUD_ResampleReader.cpp
+	intern/AUD_ResampleReader.h
+	intern/AUD_SequencerEntry.cpp
+	intern/AUD_SequencerEntry.h
 	intern/AUD_SequencerFactory.cpp
 	intern/AUD_SequencerFactory.h
+	intern/AUD_SequencerHandle.cpp
+	intern/AUD_SequencerHandle.h
 	intern/AUD_SequencerReader.cpp
 	intern/AUD_SequencerReader.h
 	intern/AUD_SilenceFactory.cpp
@@ -131,6 +149,8 @@ set(SRC
 	FX/AUD_DelayReader.h
 	FX/AUD_DoubleFactory.h
 	FX/AUD_DoubleReader.h
+	FX/AUD_DynamicIIRFilterFactory.h
+	FX/AUD_DynamicIIRFilterReader.h
 	FX/AUD_EffectFactory.h
 	FX/AUD_EffectReader.h
 	FX/AUD_EnvelopeFactory.h
@@ -168,9 +188,11 @@ if(WITH_CODEC_FFMPEG)
 	list(APPEND SRC
 		ffmpeg/AUD_FFMPEGFactory.cpp
 		ffmpeg/AUD_FFMPEGReader.cpp
+		ffmpeg/AUD_FFMPEGWriter.cpp
 
 		ffmpeg/AUD_FFMPEGFactory.h
 		ffmpeg/AUD_FFMPEGReader.h
+		ffmpeg/AUD_FFMPEGWriter.h
 	)
 endif()
 
@@ -230,9 +252,11 @@ if(WITH_CODEC_SNDFILE)
 	list(APPEND SRC
 		sndfile/AUD_SndFileFactory.cpp
 		sndfile/AUD_SndFileReader.cpp
+		sndfile/AUD_SndFileWriter.cpp
 
 		sndfile/AUD_SndFileFactory.h
 		sndfile/AUD_SndFileReader.h
+		sndfile/AUD_SndFileWriter.h
 	)
 endif()
 

intern/audaspace/FX/AUD_AccumulatorFactory.cpp

@@ -32,7 +32,7 @@
 #include "AUD_AccumulatorFactory.h"
 #include "AUD_CallbackIIRFilterReader.h"
 
-sample_t accumulatorFilterAdditive(AUD_CallbackIIRFilterReader* reader, void* useless)
+sample_t AUD_AccumulatorFactory::accumulatorFilterAdditive(AUD_CallbackIIRFilterReader* reader, void* useless)
 {
 	float in = reader->x(0);
 	float lastin = reader->x(-1);
@@ -42,7 +42,7 @@ sample_t accumulatorFilterAdditive(AUD_CallbackIIRFilterReader* reader, void* us
 	return out;
 }
 
-sample_t accumulatorFilter(AUD_CallbackIIRFilterReader* reader, void* useless)
+sample_t AUD_AccumulatorFactory::accumulatorFilter(AUD_CallbackIIRFilterReader* reader, void* useless)
 {
 	float in = reader->x(0);
 	float lastin = reader->x(-1);
@@ -52,14 +52,14 @@ sample_t accumulatorFilter(AUD_CallbackIIRFilterReader* reader, void* useless)
 	return out;
 }
 
-AUD_AccumulatorFactory::AUD_AccumulatorFactory(AUD_IFactory* factory,
+AUD_AccumulatorFactory::AUD_AccumulatorFactory(AUD_Reference<AUD_IFactory> factory,
 											   bool additive) :
 		AUD_EffectFactory(factory),
 		m_additive(additive)
 {
 }
 
-AUD_IReader* AUD_AccumulatorFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_AccumulatorFactory::createReader()
 {
 	return new AUD_CallbackIIRFilterReader(getReader(), 2, 2,
 							m_additive ? accumulatorFilterAdditive : accumulatorFilter);

intern/audaspace/FX/AUD_AccumulatorFactory.h

@@ -33,9 +33,14 @@
 #define AUD_ACCUMULATORFACTORY
 
 #include "AUD_EffectFactory.h"
+class AUD_CallbackIIRFilterReader;
 
 /**
  * This factory creates an accumulator reader.
+ *
+ * The accumulator adds the difference at the input to the last output in case
+ * it's positive. In additive mode it additionaly adds the difference always.
+ * So in case the difference is positive, it's added twice.
  */
 class AUD_AccumulatorFactory : public AUD_EffectFactory
 {
@@ -55,9 +60,12 @@ public:
 	 * \param factory The input factory.
 	 * \param additive Whether the accumulator is additive.
 	 */
-	AUD_AccumulatorFactory(AUD_IFactory* factory, bool additive = false);
+	AUD_AccumulatorFactory(AUD_Reference<AUD_IFactory> factory, bool additive = false);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
+
+	static sample_t accumulatorFilterAdditive(AUD_CallbackIIRFilterReader* reader, void* useless);
+	static sample_t accumulatorFilter(AUD_CallbackIIRFilterReader* reader, void* useless);
 };
 
 #endif //AUD_ACCUMULATORFACTORY

intern/audaspace/FX/AUD_BaseIIRFilterReader.cpp

@@ -33,20 +33,20 @@
 
 #include <cstring>
 
-#define CC m_channels + m_channel
+#define CC m_specs.channels + m_channel
 
-AUD_BaseIIRFilterReader::AUD_BaseIIRFilterReader(AUD_IReader* reader, int in,
+AUD_BaseIIRFilterReader::AUD_BaseIIRFilterReader(AUD_Reference<AUD_IReader> reader, int in,
 												 int out) :
 		AUD_EffectReader(reader),
-		m_channels(reader->getSpecs().channels),
+		m_specs(reader->getSpecs()),
 		m_xlen(in), m_ylen(out),
 		m_xpos(0), m_ypos(0), m_channel(0)
 {
-	m_x = new sample_t[in * m_channels];
+	m_x = new sample_t[m_xlen * m_specs.channels];
-	m_y = new sample_t[out * m_channels];
+	m_y = new sample_t[m_ylen * m_specs.channels];
 
-	memset(m_x, 0, sizeof(sample_t) * in * m_channels);
+	memset(m_x, 0, sizeof(sample_t) * m_xlen * m_specs.channels);
-	memset(m_y, 0, sizeof(sample_t) * out * m_channels);
+	memset(m_y, 0, sizeof(sample_t) * m_ylen * m_specs.channels);
 }
 
 AUD_BaseIIRFilterReader::~AUD_BaseIIRFilterReader()
@@ -55,24 +55,77 @@ AUD_BaseIIRFilterReader::~AUD_BaseIIRFilterReader()
 	delete[] m_y;
 }
 
-void AUD_BaseIIRFilterReader::read(int & length, sample_t* & buffer)
+void AUD_BaseIIRFilterReader::setLengths(int in, int out)
 {
-	sample_t* buf;
+	if(in != m_xlen)
+	{
+		sample_t* xn = new sample_t[in * m_specs.channels];
+		memset(xn, 0, sizeof(sample_t) * in * m_specs.channels);
 
-	int samplesize = AUD_SAMPLE_SIZE(m_reader->getSpecs());
+		for(m_channel = 0; m_channel < m_specs.channels; m_channel++)
+		{
+			for(int i = 1; i <= in && i <= m_xlen; i++)
+			{
+				xn[(in - i) * CC] = x(-i);
+			}
+		}
 
-	m_reader->read(length, buf);
+		delete[] m_x;
+		m_x = xn;
+		m_xpos = 0;
+		m_xlen = in;
+	}
 
-	if(m_buffer.getSize() < length * samplesize)
+	if(out != m_ylen)
-		m_buffer.resize(length * samplesize);
+	{
+		sample_t* yn = new sample_t[out * m_specs.channels];
+		memset(yn, 0, sizeof(sample_t) * out * m_specs.channels);
 
-	buffer = m_buffer.getBuffer();
+		for(m_channel = 0; m_channel < m_specs.channels; m_channel++)
+		{
+			for(int i = 1; i <= out && i <= m_ylen; i++)
+			{
+				yn[(out - i) * CC] = y(-i);
+			}
+		}
 
-	for(m_channel = 0; m_channel < m_channels; m_channel++)
+		delete[] m_y;
+		m_y = yn;
+		m_ypos = 0;
+		m_ylen = out;
+	}
+}
+
+void AUD_BaseIIRFilterReader::read(int& length, bool& eos, sample_t* buffer)
+{
+	AUD_Specs specs = m_reader->getSpecs();
+	if(specs.channels != m_specs.channels)
+	{
+		m_specs.channels = specs.channels;
+
+		delete[] m_x;
+		delete[] m_y;
+
+		m_x = new sample_t[m_xlen * m_specs.channels];
+		m_y = new sample_t[m_ylen * m_specs.channels];
+
+		memset(m_x, 0, sizeof(sample_t) * m_xlen * m_specs.channels);
+		memset(m_y, 0, sizeof(sample_t) * m_ylen * m_specs.channels);
+	}
+
+	if(specs.rate != m_specs.rate)
+	{
+		m_specs = specs;
+		sampleRateChanged(m_specs.rate);
+	}
+
+	m_reader->read(length, eos, buffer);
+
+	for(m_channel = 0; m_channel < m_specs.channels; m_channel++)
 	{
 		for(int i = 0; i < length; i++)
 		{
-			m_x[m_xpos * CC] = buf[i * CC];
+			m_x[m_xpos * CC] = buffer[i * CC];
 			m_y[m_ypos * CC] = buffer[i * CC] = filter();
 
 			m_xpos = (m_xpos + 1) % m_xlen;
@@ -80,3 +133,7 @@ void AUD_BaseIIRFilterReader::read(int & length, sample_t* & buffer)
 		}
 	}
 }
+
+void AUD_BaseIIRFilterReader::sampleRateChanged(AUD_SampleRate rate)
+{
+}

intern/audaspace/FX/AUD_BaseIIRFilterReader.h

@@ -42,24 +42,19 @@ class AUD_BaseIIRFilterReader : public AUD_EffectReader
 {
 private:
 	/**
-	 * Channel count.
+	 * Specs.
 	 */
-	const int m_channels;
+	AUD_Specs m_specs;
 
 	/**
 	 * Length of input samples needed.
 	 */
-	const int m_xlen;
+	int m_xlen;
 
 	/**
 	 * Length of output samples needed.
 	 */
-	const int m_ylen;
+	int m_ylen;
-
-	/**
-	 * The playback buffer.
-	 */
-	AUD_Buffer m_buffer;
 
 	/**
 	 * The last in samples array.
@@ -97,24 +92,46 @@ protected:
 	 * \param in The count of past input samples needed.
 	 * \param out The count of past output samples needed.
 	 */
-	AUD_BaseIIRFilterReader(AUD_IReader* reader, int in, int out);
+	AUD_BaseIIRFilterReader(AUD_Reference<AUD_IReader> reader, int in, int out);
+
+	void setLengths(int in, int out);
 
 public:
+	/**
+	 * Retrieves the last input samples.
+	 * \param pos The position, valid are 0 (current) or negative values.
+	 * \return The sample value.
+	 */
 	inline sample_t x(int pos)
 	{
-		return m_x[(m_xpos + pos + m_xlen) % m_xlen * m_channels + m_channel];
+		return m_x[(m_xpos + pos + m_xlen) % m_xlen * m_specs.channels + m_channel];
 	}
 
+	/**
+	 * Retrieves the last output samples.
+	 * \param pos The position, valid are negative values.
+	 * \return The sample value.
+	 */
 	inline sample_t y(int pos)
 	{
-		return m_y[(m_ypos + pos + m_ylen) % m_ylen * m_channels + m_channel];
+		return m_y[(m_ypos + pos + m_ylen) % m_ylen * m_specs.channels + m_channel];
 	}
 
 	virtual ~AUD_BaseIIRFilterReader();
 
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 
+	/**
+	 * Runs the filtering function.
+	 * \return The current output sample value.
+	 */
 	virtual sample_t filter()=0;
+
+	/**
+	 * Notifies the filter about a sample rate change.
+	 * \param rate The new sample rate.
+	 */
+	virtual void sampleRateChanged(AUD_SampleRate rate);
 };
 
 #endif //AUD_BASEIIRFILTERREADER

intern/audaspace/FX/AUD_ButterworthFactory.cpp

@@ -41,19 +41,18 @@
 #define BWPB41 0.76536686473
 #define BWPB42 1.84775906502
 
-AUD_ButterworthFactory::AUD_ButterworthFactory(AUD_IFactory* factory,
+AUD_ButterworthFactory::AUD_ButterworthFactory(AUD_Reference<AUD_IFactory> factory,
 											   float frequency) :
-		AUD_EffectFactory(factory),
+		AUD_DynamicIIRFilterFactory(factory),
 		m_frequency(frequency)
 {
 }
 
-AUD_IReader* AUD_ButterworthFactory::createReader() const
+void AUD_ButterworthFactory::recalculateCoefficients(AUD_SampleRate rate,
+													 std::vector<float> &b,
+													 std::vector<float> &a)
 {
-	AUD_IReader* reader = getReader();
+	float omega = 2 * tan(m_frequency * M_PI / rate);
-
-	// calculate coefficients
-	float omega = 2 * tan(m_frequency * M_PI / reader->getSpecs().rate);
 	float o2 = omega * omega;
 	float o4 = o2 * o2;
 	float x1 = o2 + 2 * BWPB41 * omega + 4;
@@ -62,7 +61,6 @@ AUD_IReader* AUD_ButterworthFactory::createReader() const
 	float y2 = o2 - 2 * BWPB42 * omega + 4;
 	float o228 = 2 * o2 - 8;
 	float norm = x1 * x2;
-	std::vector<float> a, b;
 	a.push_back(1);
 	a.push_back((x1 + x2) * o228 / norm);
 	a.push_back((x1 * y2 + x2 * y1 + o228 * o228) / norm);
@@ -73,6 +71,4 @@ AUD_IReader* AUD_ButterworthFactory::createReader() const
 	b.push_back(6 * o4 / norm);
 	b.push_back(b[1]);
 	b.push_back(b[0]);
-
-	return new AUD_IIRFilterReader(reader, b, a);
 }

intern/audaspace/FX/AUD_ButterworthFactory.h

@@ -32,12 +32,12 @@
 #ifndef AUD_BUTTERWORTHFACTORY
 #define AUD_BUTTERWORTHFACTORY
 
-#include "AUD_EffectFactory.h"
+#include "AUD_DynamicIIRFilterFactory.h"
 
 /**
- * This factory creates a butterworth filter reader.
+ * This factory creates a butterworth lowpass filter reader.
  */
-class AUD_ButterworthFactory : public AUD_EffectFactory
+class AUD_ButterworthFactory : public AUD_DynamicIIRFilterFactory
 {
 private:
 	/**
@@ -55,9 +55,11 @@ public:
 	 * \param factory The input factory.
 	 * \param frequency The cutoff frequency.
 	 */
-	AUD_ButterworthFactory(AUD_IFactory* factory, float frequency);
+	AUD_ButterworthFactory(AUD_Reference<AUD_IFactory> factory, float frequency);
 
-	virtual AUD_IReader* createReader() const;
+	virtual void recalculateCoefficients(AUD_SampleRate rate,
+										 std::vector<float>& b,
+										 std::vector<float>& a);
 };
 
 #endif //AUD_BUTTERWORTHFACTORY

intern/audaspace/FX/AUD_CallbackIIRFilterReader.cpp

@@ -31,7 +31,7 @@
 
 #include "AUD_CallbackIIRFilterReader.h"
 
-AUD_CallbackIIRFilterReader::AUD_CallbackIIRFilterReader(AUD_IReader* reader,
+AUD_CallbackIIRFilterReader::AUD_CallbackIIRFilterReader(AUD_Reference<AUD_IReader> reader,
 														 int in, int out,
 														 doFilterIIR doFilter,
 														 endFilterIIR endFilter,

intern/audaspace/FX/AUD_CallbackIIRFilterReader.h

@@ -76,7 +76,7 @@ public:
 	 * \param endFilter The finishing callback.
 	 * \param data Data pointer for the callbacks.
 	 */
-	AUD_CallbackIIRFilterReader(AUD_IReader* reader, int in, int out,
+	AUD_CallbackIIRFilterReader(AUD_Reference<AUD_IReader> reader, int in, int out,
 								doFilterIIR doFilter,
 								endFilterIIR endFilter = 0,
 								void* data = 0);

intern/audaspace/FX/AUD_DelayFactory.cpp

@@ -33,7 +33,7 @@
 #include "AUD_DelayReader.h"
 #include "AUD_Space.h"
 
-AUD_DelayFactory::AUD_DelayFactory(AUD_IFactory* factory, float delay) :
+AUD_DelayFactory::AUD_DelayFactory(AUD_Reference<AUD_IFactory> factory, float delay) :
 		AUD_EffectFactory(factory),
 		m_delay(delay)
 {
@@ -44,7 +44,7 @@ float AUD_DelayFactory::getDelay() const
 	return m_delay;
 }
 
-AUD_IReader* AUD_DelayFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_DelayFactory::createReader()
 {
 	return new AUD_DelayReader(getReader(), m_delay);
 }

intern/audaspace/FX/AUD_DelayFactory.h

@@ -55,14 +55,14 @@ public:
 	 * \param factory The input factory.
 	 * \param delay The desired delay in seconds.
 	 */
-	AUD_DelayFactory(AUD_IFactory* factory, float delay = 0);
+	AUD_DelayFactory(AUD_Reference<AUD_IFactory> factory, float delay = 0);
 
 	/**
 	 * Returns the delay in seconds.
 	 */
 	float getDelay() const;
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_DELAYFACTORY

intern/audaspace/FX/AUD_DelayReader.cpp

@@ -33,11 +33,10 @@
 
 #include <cstring>
 
-AUD_DelayReader::AUD_DelayReader(AUD_IReader* reader, float delay) :
+AUD_DelayReader::AUD_DelayReader(AUD_Reference<AUD_IReader> reader, float delay) :
 		AUD_EffectReader(reader),
 		m_delay(int(delay * reader->getSpecs().rate)),
-		m_remdelay(int(delay * reader->getSpecs().rate)),
+		m_remdelay(int(delay * reader->getSpecs().rate))
-		m_empty(true)
 {
 }
 
@@ -70,49 +69,30 @@ int AUD_DelayReader::getPosition() const
 	return m_reader->getPosition() + m_delay;
 }
 
-void AUD_DelayReader::read(int & length, sample_t* & buffer)
+void AUD_DelayReader::read(int& length, bool& eos, sample_t* buffer)
 {
 	if(m_remdelay > 0)
 	{
 		AUD_Specs specs = m_reader->getSpecs();
 		int samplesize = AUD_SAMPLE_SIZE(specs);
 
-		if(m_buffer.getSize() < length * samplesize)
-		{
-			m_buffer.resize(length * samplesize);
-			m_empty = false;
-		}
-
-		buffer = m_buffer.getBuffer();
-
 		if(length > m_remdelay)
 		{
-			if(!m_empty)
 			memset(buffer, 0, m_remdelay * samplesize);
 
 			int len = length - m_remdelay;
-			sample_t* buf;
+			m_reader->read(len, eos, buffer + m_remdelay * specs.channels);
-			m_reader->read(len, buf);
 
-			memcpy(buffer + m_remdelay * specs.channels,
-				   buf, len * samplesize);
-
-			if(len < length-m_remdelay)
 			length = m_remdelay + len;
 
 			m_remdelay = 0;
-			m_empty = false;
 		}
 		else
-		{
-			if(!m_empty)
 		{
 			memset(buffer, 0, length * samplesize);
-				m_empty = true;
-			}
 			m_remdelay -= length;
 		}
 	}
 	else
-		m_reader->read(length, buffer);
+		m_reader->read(length, eos, buffer);
 }

intern/audaspace/FX/AUD_DelayReader.h

@@ -36,16 +36,11 @@
 #include "AUD_Buffer.h"
 
 /**
- * This class reads another reader and changes it's delay.
+ * This class reads another reader and delays it.
  */
 class AUD_DelayReader : public AUD_EffectReader
 {
 private:
-	/**
-	 * The playback buffer.
-	 */
-	AUD_Buffer m_buffer;
-
 	/**
 	 * The delay level.
 	 */
@@ -56,11 +51,6 @@ private:
 	 */
 	int m_remdelay;
 
-	/**
-	 * Whether the buffer is currently filled with zeros.
-	 */
-	bool m_empty;
-
 	// hide copy constructor and operator=
 	AUD_DelayReader(const AUD_DelayReader&);
 	AUD_DelayReader& operator=(const AUD_DelayReader&);
@@ -71,12 +61,12 @@ public:
 	 * \param reader The reader to read from.
 	 * \param delay The delay in seconds.
 	 */
-	AUD_DelayReader(AUD_IReader* reader, float delay);
+	AUD_DelayReader(AUD_Reference<AUD_IReader> reader, float delay);
 
 	virtual void seek(int position);
 	virtual int getLength() const;
 	virtual int getPosition() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_DELAYREADER

intern/audaspace/FX/AUD_DoubleFactory.cpp

@@ -32,25 +32,15 @@
 #include "AUD_DoubleFactory.h"
 #include "AUD_DoubleReader.h"
 
-AUD_DoubleFactory::AUD_DoubleFactory(AUD_IFactory* factory1, AUD_IFactory* factory2) :
+AUD_DoubleFactory::AUD_DoubleFactory(AUD_Reference<AUD_IFactory> factory1, AUD_Reference<AUD_IFactory> factory2) :
 		m_factory1(factory1), m_factory2(factory2)
 {
 }
 
-AUD_IReader* AUD_DoubleFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_DoubleFactory::createReader()
 {
-	AUD_IReader* reader1 = m_factory1->createReader();
+	AUD_Reference<AUD_IReader> reader1 = m_factory1->createReader();
-	AUD_IReader* reader2;
+	AUD_Reference<AUD_IReader> reader2 = m_factory2->createReader();
-
-	try
-	{
-		reader2 = m_factory2->createReader();
-	}
-	catch(AUD_Exception&)
-	{
-		delete reader1;
-		throw;
-	}
 
 	return new AUD_DoubleReader(reader1, reader2);
 }

intern/audaspace/FX/AUD_DoubleFactory.h

@@ -36,7 +36,6 @@
 
 /**
  * This factory plays two other factories behind each other.
- * \note Readers from the underlying factories must have the same sample rate and channel count.
  */
 class AUD_DoubleFactory : public AUD_IFactory
 {
@@ -44,12 +43,12 @@ private:
 	/**
 	 * First played factory.
 	 */
-	AUD_IFactory* m_factory1;
+	AUD_Reference<AUD_IFactory> m_factory1;
 
 	/**
 	 * Second played factory.
 	 */
-	AUD_IFactory* m_factory2;
+	AUD_Reference<AUD_IFactory> m_factory2;
 
 	// hide copy constructor and operator=
 	AUD_DoubleFactory(const AUD_DoubleFactory&);
@@ -61,9 +60,9 @@ public:
 	 * \param factory1 The first input factory.
 	 * \param factory2 The second input factory.
 	 */
-	AUD_DoubleFactory(AUD_IFactory* factory1, AUD_IFactory* factory2);
+	AUD_DoubleFactory(AUD_Reference<AUD_IFactory> factory1, AUD_Reference<AUD_IFactory> factory2);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_DOUBLEFACTORY

intern/audaspace/FX/AUD_DoubleReader.cpp

@@ -33,28 +33,17 @@
 
 #include <cstring>
 
-static const char* specs_error = "AUD_DoubleReader: Both readers have to have "
+AUD_DoubleReader::AUD_DoubleReader(AUD_Reference<AUD_IReader> reader1,
-								 "the same specs.";
+								   AUD_Reference<AUD_IReader> reader2) :
-
-AUD_DoubleReader::AUD_DoubleReader(AUD_IReader* reader1,
-								   AUD_IReader* reader2) :
 		m_reader1(reader1), m_reader2(reader2), m_finished1(false)
 {
 	AUD_Specs s1, s2;
 	s1 = reader1->getSpecs();
 	s2 = reader2->getSpecs();
-	if(memcmp(&s1, &s2, sizeof(AUD_Specs)) != 0)
-	{
-		delete reader1;
-		delete reader2;
-		AUD_THROW(AUD_ERROR_SPECS, specs_error);
-	}
 }
 
 AUD_DoubleReader::~AUD_DoubleReader()
 {
-	delete m_reader1;
-	delete m_reader2;
 }
 
 bool AUD_DoubleReader::isSeekable() const
@@ -90,43 +79,36 @@ int AUD_DoubleReader::getPosition() const
 
 AUD_Specs AUD_DoubleReader::getSpecs() const
 {
-	return m_reader1->getSpecs();
+	return m_finished1 ? m_reader1->getSpecs() : m_reader2->getSpecs();
 }
 
-void AUD_DoubleReader::read(int & length, sample_t* & buffer)
+void AUD_DoubleReader::read(int& length, bool& eos, sample_t* buffer)
 {
+	eos = false;
+
 	if(!m_finished1)
 	{
 		int len = length;
-		m_reader1->read(len, buffer);
+
+		m_reader1->read(len, m_finished1, buffer);
 
 		if(len < length)
 		{
-			AUD_Specs specs = m_reader1->getSpecs();
+			AUD_Specs specs1, specs2;
-			int samplesize = AUD_SAMPLE_SIZE(specs);
+			specs1 = m_reader1->getSpecs();
-
+			specs2 = m_reader2->getSpecs();
-			if(m_buffer.getSize() < length * samplesize)
+			if(AUD_COMPARE_SPECS(specs1, specs2))
-				m_buffer.resize(length * samplesize);
+			{
-
+				int len2 = length - len;
-			sample_t* buf = buffer;
+				m_reader2->read(len2, eos, buffer + specs1.channels * len);
-			buffer = m_buffer.getBuffer();
+				length = len + len2;
-
+			}
-			memcpy(buffer, buf, len * samplesize);
+			else
-
+				length = len;
-			len = length - len;
-			length -= len;
-			m_reader2->read(len, buf);
-
-			memcpy(buffer + length * specs.channels, buf,
-				   len * samplesize);
-
-			length += len;
-
-			m_finished1 = true;
 		}
 	}
 	else
 	{
-		m_reader2->read(length, buffer);
+		m_reader2->read(length, eos, buffer);
 	}
 }

intern/audaspace/FX/AUD_DoubleReader.h

@@ -34,9 +34,10 @@
 
 #include "AUD_IReader.h"
 #include "AUD_Buffer.h"
+#include "AUD_Reference.h"
 
 /**
- * This reader plays two readers with the same specs sequently.
+ * This reader plays two readers sequently.
  */
 class AUD_DoubleReader : public AUD_IReader
 {
@@ -44,35 +45,29 @@ private:
 	/**
 	 * The first reader.
 	 */
-	AUD_IReader* m_reader1;
+	AUD_Reference<AUD_IReader> m_reader1;
 
 	/**
 	 * The second reader.
 	 */
-	AUD_IReader* m_reader2;
+	AUD_Reference<AUD_IReader> m_reader2;
 
 	/**
 	 * Whether we've reached the end of the first reader.
 	 */
 	bool m_finished1;
 
-	/**
-	 * The playback buffer for the intersecting part.
-	 */
-	AUD_Buffer m_buffer;
-
 	// hide copy constructor and operator=
 	AUD_DoubleReader(const AUD_DoubleReader&);
 	AUD_DoubleReader& operator=(const AUD_DoubleReader&);
 
 public:
 	/**
-	 * Creates a new ping pong reader.
+	 * Creates a new double reader.
 	 * \param reader1 The first reader to read from.
 	 * \param reader2 The second reader to read from.
-	 * \exception AUD_Exception Thrown if the specs from the readers differ.
 	 */
-	AUD_DoubleReader(AUD_IReader* reader1, AUD_IReader* reader2);
+	AUD_DoubleReader(AUD_Reference<AUD_IReader> reader1, AUD_Reference<AUD_IReader> reader2);
 
 	/**
 	 * Destroys the reader.
@@ -84,7 +79,7 @@ public:
 	virtual int getLength() const;
 	virtual int getPosition() const;
 	virtual AUD_Specs getSpecs() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_DOUBLEREADER

intern/audaspace/FX/AUD_DynamicIIRFilterFactory.cpp

@@ -0,0 +1,42 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/FX/AUD_DynamicIIRFilterFactory.cpp
+ *  \ingroup audfx
+ */
+
+#include "AUD_DynamicIIRFilterFactory.h"
+#include "AUD_DynamicIIRFilterReader.h"
+
+AUD_DynamicIIRFilterFactory::AUD_DynamicIIRFilterFactory(AUD_Reference<AUD_IFactory> factory) :
+	AUD_EffectFactory(factory)
+{
+}
+
+AUD_Reference<AUD_IReader> AUD_DynamicIIRFilterFactory::createReader()
+{
+	return new AUD_DynamicIIRFilterReader(getReader(), this);
+}

intern/audaspace/FX/AUD_DynamicIIRFilterFactory.h

@@ -0,0 +1,65 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/FX/AUD_DynamicIIRFilterFactory.h
+ *  \ingroup audfx
+ */
+
+#ifndef AUD_DYNAMICIIRFILTERFACTORY
+#define AUD_DYNAMICIIRFILTERFACTORY
+
+#include "AUD_EffectFactory.h"
+#include <vector>
+
+/**
+ * This factory creates a IIR filter reader.
+ *
+ * This means that on sample rate change the filter recalculates its
+ * coefficients.
+ */
+class AUD_DynamicIIRFilterFactory : public AUD_EffectFactory
+{
+public:
+	/**
+	 * Creates a new Dynmic IIR filter factory.
+	 * \param factory The input factory.
+	 */
+	AUD_DynamicIIRFilterFactory(AUD_Reference<AUD_IFactory> factory);
+
+	virtual AUD_Reference<AUD_IReader> createReader();
+
+	/**
+	 * Recalculates the filter coefficients.
+	 * \param rate The sample rate of the audio data.
+	 * \param[out] b The input filter coefficients.
+	 * \param[out] a The output filter coefficients.
+	 */
+	virtual void recalculateCoefficients(AUD_SampleRate rate,
+										 std::vector<float>& b,
+										 std::vector<float>& a)=0;
+};
+
+#endif // AUD_DYNAMICIIRFILTERFACTORY

intern/audaspace/FX/AUD_DynamicIIRFilterReader.cpp

@@ -0,0 +1,45 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/FX/AUD_DynamicIIRFilterReader.cpp
+ *  \ingroup audfx
+ */
+
+#include "AUD_DynamicIIRFilterReader.h"
+
+AUD_DynamicIIRFilterReader::AUD_DynamicIIRFilterReader(AUD_Reference<AUD_IReader> reader,
+													   AUD_Reference<AUD_DynamicIIRFilterFactory> factory) :
+	AUD_IIRFilterReader(reader, std::vector<float>(), std::vector<float>())
+{
+	sampleRateChanged(reader->getSpecs().rate);
+}
+
+void AUD_DynamicIIRFilterReader::sampleRateChanged(AUD_SampleRate rate)
+{
+	std::vector<float> a, b;
+	m_factory->recalculateCoefficients(rate, b, a);
+	setCoefficients(b, a);
+}

intern/audaspace/FX/AUD_DynamicIIRFilterReader.h

@@ -0,0 +1,56 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/FX/AUD_DynamicIIRFilterReader.h
+ *  \ingroup audfx
+ */
+
+#ifndef AUD_DYNAMICIIRFILTERREADER
+#define AUD_DYNAMICIIRFILTERREADER
+
+#include "AUD_IIRFilterReader.h"
+#include "AUD_DynamicIIRFilterFactory.h"
+
+/**
+ * This class is for dynamic infinite impulse response filters with simple
+ * coefficients that change depending on the sample rate.
+ */
+class AUD_DynamicIIRFilterReader : public AUD_IIRFilterReader
+{
+private:
+	/**
+	 * The factory for dynamically recalculating filter coefficients.
+	 */
+	AUD_Reference<AUD_DynamicIIRFilterFactory> m_factory;
+
+public:
+	AUD_DynamicIIRFilterReader(AUD_Reference<AUD_IReader> reader,
+							   AUD_Reference<AUD_DynamicIIRFilterFactory> factory);
+
+	virtual void sampleRateChanged(AUD_SampleRate rate);
+};
+
+#endif // AUD_DYNAMICIIRFILTERREADER

intern/audaspace/FX/AUD_EffectFactory.cpp

@@ -32,7 +32,7 @@
 #include "AUD_EffectFactory.h"
 #include "AUD_IReader.h"
 
-AUD_EffectFactory::AUD_EffectFactory(AUD_IFactory* factory)
+AUD_EffectFactory::AUD_EffectFactory(AUD_Reference<AUD_IFactory> factory)
 {
 	m_factory = factory;
 }
@@ -41,7 +41,7 @@ AUD_EffectFactory::~AUD_EffectFactory()
 {
 }
 
-AUD_IFactory* AUD_EffectFactory::getFactory() const
+AUD_Reference<AUD_IFactory> AUD_EffectFactory::getFactory() const
 {
 	return m_factory;
 }

intern/audaspace/FX/AUD_EffectFactory.h

@@ -49,7 +49,7 @@ protected:
 	/**
 	 * If there is no reader it is created out of this factory.
 	 */
-	AUD_IFactory* m_factory;
+	AUD_Reference<AUD_IFactory> m_factory;
 
 	/**
 	 * Returns the reader created out of the factory.
@@ -57,7 +57,7 @@ protected:
 	 * classes.
 	 * \return The reader created out of the factory.
 	 */
-	inline AUD_IReader* getReader() const
+	inline AUD_Reference<AUD_IReader> getReader() const
 	{
 		return m_factory->createReader();
 	}
@@ -67,7 +67,7 @@ public:
 	 * Creates a new factory.
 	 * \param factory The input factory.
 	 */
-	AUD_EffectFactory(AUD_IFactory* factory);
+	AUD_EffectFactory(AUD_Reference<AUD_IFactory> factory);
 
 	/**
 	 * Destroys the factory.
@@ -78,7 +78,7 @@ public:
 	 * Returns the saved factory.
 	 * \return The factory or NULL if there has no factory been saved.
 	 */
-	AUD_IFactory* getFactory() const;
+	AUD_Reference<AUD_IFactory> getFactory() const;
 };
 
 #endif //AUD_EFFECTFACTORY

intern/audaspace/FX/AUD_EffectReader.cpp

@@ -31,14 +31,13 @@
 
 #include "AUD_EffectReader.h"
 
-AUD_EffectReader::AUD_EffectReader(AUD_IReader* reader)
+AUD_EffectReader::AUD_EffectReader(AUD_Reference<AUD_IReader> reader)
 {
 	m_reader = reader;
 }
 
 AUD_EffectReader::~AUD_EffectReader()
 {
-	delete m_reader;
 }
 
 bool AUD_EffectReader::isSeekable() const
@@ -66,7 +65,7 @@ AUD_Specs AUD_EffectReader::getSpecs() const
 	return m_reader->getSpecs();
 }
 
-void AUD_EffectReader::read(int & length, sample_t* & buffer)
+void AUD_EffectReader::read(int& length, bool& eos, sample_t* buffer)
 {
-	m_reader->read(length, buffer);
+	m_reader->read(length, eos, buffer);
 }

intern/audaspace/FX/AUD_EffectReader.h

@@ -33,6 +33,7 @@
 #define AUD_EFFECTREADER
 
 #include "AUD_IReader.h"
+#include "AUD_Reference.h"
 
 /**
  * This reader is a base class for all effect readers that take one other reader
@@ -49,14 +50,14 @@ protected:
 	/**
 	 * The reader to read from.
 	 */
-	AUD_IReader* m_reader;
+	AUD_Reference<AUD_IReader> m_reader;
 
 public:
 	/**
 	 * Creates a new effect reader.
 	 * \param reader The reader to read from.
 	 */
-	AUD_EffectReader(AUD_IReader* reader);
+	AUD_EffectReader(AUD_Reference<AUD_IReader> reader);
 
 	/**
 	 * Destroys the reader.
@@ -68,7 +69,7 @@ public:
 	virtual int getLength() const;
 	virtual int getPosition() const;
 	virtual AUD_Specs getSpecs() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_EFFECTREADER

intern/audaspace/FX/AUD_EnvelopeFactory.cpp

@@ -42,7 +42,7 @@ struct EnvelopeParameters
 	float arthreshold;
 };
 
-sample_t envelopeFilter(AUD_CallbackIIRFilterReader* reader, EnvelopeParameters* param)
+sample_t AUD_EnvelopeFactory::envelopeFilter(AUD_CallbackIIRFilterReader* reader, EnvelopeParameters* param)
 {
 	float in = fabs(reader->x(0));
 	float out = reader->y(-1);
@@ -51,12 +51,12 @@ sample_t envelopeFilter(AUD_CallbackIIRFilterReader* reader, EnvelopeParameters*
 	return (in > out ? param->attack : param->release) * (out - in) + in;
 }
 
-void endEnvelopeFilter(EnvelopeParameters* param)
+void AUD_EnvelopeFactory::endEnvelopeFilter(EnvelopeParameters* param)
 {
 	delete param;
 }
 
-AUD_EnvelopeFactory::AUD_EnvelopeFactory(AUD_IFactory* factory, float attack,
+AUD_EnvelopeFactory::AUD_EnvelopeFactory(AUD_Reference<AUD_IFactory> factory, float attack,
 										 float release, float threshold,
 										 float arthreshold) :
 		AUD_EffectFactory(factory),
@@ -67,14 +67,14 @@ AUD_EnvelopeFactory::AUD_EnvelopeFactory(AUD_IFactory* factory, float attack,
 {
 }
 
-AUD_IReader* AUD_EnvelopeFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_EnvelopeFactory::createReader()
 {
-	AUD_IReader* reader = getReader();
+	AUD_Reference<AUD_IReader> reader = getReader();
 
 	EnvelopeParameters* param = new EnvelopeParameters();
 	param->arthreshold = m_arthreshold;
-	param->attack = pow(m_arthreshold, 1.0f/(reader->getSpecs().rate * m_attack));
+	param->attack = pow(m_arthreshold, 1.0f/(static_cast<float>(reader->getSpecs().rate) * m_attack));
-	param->release = pow(m_arthreshold, 1.0f/(reader->getSpecs().rate * m_release));
+	param->release = pow(m_arthreshold, 1.0f/(static_cast<float>(reader->getSpecs().rate) * m_release));
 	param->threshold = m_threshold;
 
 	return new AUD_CallbackIIRFilterReader(reader, 1, 2,

intern/audaspace/FX/AUD_EnvelopeFactory.h

@@ -33,6 +33,8 @@
 #define AUD_ENVELOPEFACTORY
 
 #include "AUD_EffectFactory.h"
+class AUD_CallbackIIRFilterReader;
+struct EnvelopeParameters;
 
 /**
  * This factory creates an envelope follower reader.
@@ -73,10 +75,13 @@ public:
 	 * \param threshold The threshold value.
 	 * \param arthreshold The attack/release threshold value.
 	 */
-	AUD_EnvelopeFactory(AUD_IFactory* factory, float attack, float release,
+	AUD_EnvelopeFactory(AUD_Reference<AUD_IFactory> factory, float attack, float release,
 						float threshold, float arthreshold);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
+
+	static sample_t envelopeFilter(AUD_CallbackIIRFilterReader* reader, EnvelopeParameters* param);
+	static void endEnvelopeFilter(EnvelopeParameters* param);
 };
 
 #endif //AUD_ENVELOPEFACTORY

intern/audaspace/FX/AUD_FaderFactory.cpp

@@ -32,7 +32,7 @@
 #include "AUD_FaderFactory.h"
 #include "AUD_FaderReader.h"
 
-AUD_FaderFactory::AUD_FaderFactory(AUD_IFactory* factory, AUD_FadeType type,
+AUD_FaderFactory::AUD_FaderFactory(AUD_Reference<AUD_IFactory> factory, AUD_FadeType type,
 								   float start, float length) :
 		AUD_EffectFactory(factory),
 		m_type(type),
@@ -56,7 +56,7 @@ float AUD_FaderFactory::getLength() const
 	return m_length;
 }
 
-AUD_IReader* AUD_FaderFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_FaderFactory::createReader()
 {
 	return new AUD_FaderReader(getReader(), m_type, m_start, m_length);
 }

intern/audaspace/FX/AUD_FaderFactory.h

@@ -69,7 +69,7 @@ public:
 	 * \param start The time where fading should start in seconds.
 	 * \param length How long fading should last in seconds.
 	 */
-	AUD_FaderFactory(AUD_IFactory* factory,
+	AUD_FaderFactory(AUD_Reference<AUD_IFactory> factory,
 					  AUD_FadeType type = AUD_FADE_IN,
 					  float start = 0.0f, float length = 1.0f);
 
@@ -88,7 +88,7 @@ public:
 	 */
 	float getLength() const;
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_FADERFACTORY

intern/audaspace/FX/AUD_FaderReader.cpp

@@ -33,68 +33,39 @@
 
 #include <cstring>
 
-AUD_FaderReader::AUD_FaderReader(AUD_IReader* reader, AUD_FadeType type,
+AUD_FaderReader::AUD_FaderReader(AUD_Reference<AUD_IReader> reader, AUD_FadeType type,
 								 float start,float length) :
 		AUD_EffectReader(reader),
 		m_type(type),
 		m_start(start),
-		m_length(length),
+		m_length(length)
-		m_empty(true)
 {
 }
 
-void AUD_FaderReader::read(int & length, sample_t* & buffer)
+void AUD_FaderReader::read(int& length, bool& eos, sample_t* buffer)
 {
 	int position = m_reader->getPosition();
 	AUD_Specs specs = m_reader->getSpecs();
 	int samplesize = AUD_SAMPLE_SIZE(specs);
 
-	m_reader->read(length, buffer);
+	m_reader->read(length, eos, buffer);
 
 	if((position + length) / (float)specs.rate <= m_start)
 	{
 		if(m_type != AUD_FADE_OUT)
-		{
-			if(m_buffer.getSize() < length * samplesize)
-			{
-				m_buffer.resize(length * samplesize);
-				m_empty = false;
-			}
-
-			buffer = m_buffer.getBuffer();
-
-			if(!m_empty)
 		{
 			memset(buffer, 0, length * samplesize);
-				m_empty = true;
-			}
 		}
 	}
 	else if(position / (float)specs.rate >= m_start+m_length)
 	{
 		if(m_type == AUD_FADE_OUT)
-		{
-			if(m_buffer.getSize() < length * samplesize)
-			{
-				m_buffer.resize(length * samplesize);
-				m_empty = false;
-			}
-
-			buffer = m_buffer.getBuffer();
-
-			if(!m_empty)
 		{
 			memset(buffer, 0, length * samplesize);
-				m_empty = true;
-			}
 		}
 	}
 	else
 	{
-		if(m_buffer.getSize() < length * samplesize)
-			m_buffer.resize(length * samplesize);
-
-		sample_t* buf = m_buffer.getBuffer();
 		float volume = 1.0f;
 
 		for(int i = 0; i < length * specs.channels; i++)
@@ -111,10 +82,7 @@ void AUD_FaderReader::read(int & length, sample_t* & buffer)
 					volume = 1.0f - volume;
 			}
 
-			buf[i] = buffer[i] * volume;
+			buffer[i] = buffer[i] * volume;
-		}
+		}
-
-		buffer = buf;
-		m_empty = false;
 	}
 }

intern/audaspace/FX/AUD_FaderReader.h

@@ -58,16 +58,6 @@ private:
 	 */
 	const float m_length;
 
-	/**
-	 * The playback buffer.
-	 */
-	AUD_Buffer m_buffer;
-
-	/**
-	 * Whether the buffer is empty.
-	 */
-	bool m_empty;
-
 	// hide copy constructor and operator=
 	AUD_FaderReader(const AUD_FaderReader&);
 	AUD_FaderReader& operator=(const AUD_FaderReader&);
@@ -79,10 +69,10 @@ public:
 	 * \param start The time where fading should start in seconds.
 	 * \param length How long fading should last in seconds.
 	 */
-	AUD_FaderReader(AUD_IReader* reader, AUD_FadeType type,
+	AUD_FaderReader(AUD_Reference<AUD_IReader> reader, AUD_FadeType type,
 					float start,float length);
 
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_FADERREADER

intern/audaspace/FX/AUD_HighpassFactory.cpp

@@ -38,30 +38,26 @@
 #define M_PI 3.14159265358979323846
 #endif
 
-AUD_HighpassFactory::AUD_HighpassFactory(AUD_IFactory* factory, float frequency,
+AUD_HighpassFactory::AUD_HighpassFactory(AUD_Reference<AUD_IFactory> factory, float frequency,
 										 float Q) :
-		AUD_EffectFactory(factory),
+		AUD_DynamicIIRFilterFactory(factory),
 		m_frequency(frequency),
 		m_Q(Q)
 {
 }
 
-AUD_IReader* AUD_HighpassFactory::createReader() const
+void AUD_HighpassFactory::recalculateCoefficients(AUD_SampleRate rate,
+												  std::vector<float> &b,
+												  std::vector<float> &a)
 {
-	AUD_IReader* reader = getReader();
+	float w0 = 2 * M_PI * m_frequency / rate;
-
-	// calculate coefficients
-	float w0 = 2 * M_PI * m_frequency / reader->getSpecs().rate;
 	float alpha = sin(w0) / (2 * m_Q);
 	float norm = 1 + alpha;
 	float c = cos(w0);
-	std::vector<float> a, b;
 	a.push_back(1);
 	a.push_back(-2 * c / norm);
 	a.push_back((1 - alpha) / norm);
 	b.push_back((1 + c) / (2 * norm));
 	b.push_back((-1 - c) / norm);
 	b.push_back(b[0]);
-
-	return new AUD_IIRFilterReader(reader, b, a);
 }

intern/audaspace/FX/AUD_HighpassFactory.h

@@ -32,16 +32,16 @@
 #ifndef AUD_HIGHPASSFACTORY
 #define AUD_HIGHPASSFACTORY
 
-#include "AUD_EffectFactory.h"
+#include "AUD_DynamicIIRFilterFactory.h"
 
 /**
  * This factory creates a highpass filter reader.
  */
-class AUD_HighpassFactory : public AUD_EffectFactory
+class AUD_HighpassFactory : public AUD_DynamicIIRFilterFactory
 {
 private:
 	/**
-	 * The attack value in seconds.
+	 * The cutoff frequency.
 	 */
 	const float m_frequency;
 
@@ -61,9 +61,9 @@ public:
 	 * \param frequency The cutoff frequency.
 	 * \param Q The Q factor.
 	 */
-	AUD_HighpassFactory(AUD_IFactory* factory, float frequency, float Q = 1.0f);
+	AUD_HighpassFactory(AUD_Reference<AUD_IFactory> factory, float frequency, float Q = 1.0f);
 
-	virtual AUD_IReader* createReader() const;
+	virtual void recalculateCoefficients(AUD_SampleRate rate, std::vector<float> &b, std::vector<float> &a);
 };
 
 #endif //AUD_HIGHPASSFACTORY

intern/audaspace/FX/AUD_IIRFilterFactory.cpp

@@ -32,14 +32,14 @@
 #include "AUD_IIRFilterFactory.h"
 #include "AUD_IIRFilterReader.h"
 
-AUD_IIRFilterFactory::AUD_IIRFilterFactory(AUD_IFactory* factory,
+AUD_IIRFilterFactory::AUD_IIRFilterFactory(AUD_Reference<AUD_IFactory> factory,
 										   std::vector<float> b,
 										   std::vector<float> a) :
 		AUD_EffectFactory(factory), m_a(a), m_b(b)
 {
 }
 
-AUD_IReader* AUD_IIRFilterFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_IIRFilterFactory::createReader()
 {
 	return new AUD_IIRFilterReader(getReader(), m_b, m_a);
 }

intern/audaspace/FX/AUD_IIRFilterFactory.h

@@ -63,10 +63,10 @@ public:
 	 * \param b The input filter coefficients.
 	 * \param a The output filter coefficients.
 	 */
-	AUD_IIRFilterFactory(AUD_IFactory* factory, std::vector<float> b,
+	AUD_IIRFilterFactory(AUD_Reference<AUD_IFactory> factory, std::vector<float> b,
 						 std::vector<float> a);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_IIRFILTERFACTORY

intern/audaspace/FX/AUD_IIRFilterReader.cpp

@@ -31,9 +31,9 @@
 
 #include "AUD_IIRFilterReader.h"
 
-AUD_IIRFilterReader::AUD_IIRFilterReader(AUD_IReader* reader,
+AUD_IIRFilterReader::AUD_IIRFilterReader(AUD_Reference<AUD_IReader> reader,
-										 std::vector<float> b,
+										 const std::vector<float>& b,
-										 std::vector<float> a) :
+										 const std::vector<float>& a) :
 	AUD_BaseIIRFilterReader(reader, b.size(), a.size()), m_a(a), m_b(b)
 {
 	for(int i = 1; i < m_a.size(); i++)
@@ -54,3 +54,11 @@ sample_t AUD_IIRFilterReader::filter()
 
 	return out;
 }
+
+void AUD_IIRFilterReader::setCoefficients(const std::vector<float>& b,
+										  const std::vector<float>& a)
+{
+	setLengths(m_b.size(), m_a.size());
+	m_a = a;
+	m_b = b;
+}

intern/audaspace/FX/AUD_IIRFilterReader.h

@@ -63,10 +63,13 @@ public:
 	 * \param b The input filter coefficients.
 	 * \param a The output filter coefficients.
 	 */
-	AUD_IIRFilterReader(AUD_IReader* reader, std::vector<float> b,
+	AUD_IIRFilterReader(AUD_Reference<AUD_IReader> reader, const std::vector<float>& b,
-						std::vector<float> a);
+						const std::vector<float>& a);
 
 	virtual sample_t filter();
+
+	void setCoefficients(const std::vector<float>& b,
+						 const std::vector<float>& a);
 };
 
 #endif //AUD_IIRFILTERREADER

intern/audaspace/FX/AUD_LimiterFactory.cpp

@@ -33,7 +33,7 @@
 #include "AUD_LimiterReader.h"
 #include "AUD_Space.h"
 
-AUD_LimiterFactory::AUD_LimiterFactory(AUD_IFactory* factory,
+AUD_LimiterFactory::AUD_LimiterFactory(AUD_Reference<AUD_IFactory> factory,
 									   float start, float end) :
 		AUD_EffectFactory(factory),
 		m_start(start),
@@ -51,7 +51,7 @@ float AUD_LimiterFactory::getEnd() const
 	return m_end;
 }
 
-AUD_IReader* AUD_LimiterFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_LimiterFactory::createReader()
 {
 	return new AUD_LimiterReader(getReader(), m_start, m_end);
 }

intern/audaspace/FX/AUD_LimiterFactory.h

@@ -62,7 +62,7 @@ public:
 	 * \param end The desired end time, a negative value signals that it should
 	 *            play to the end.
 	 */
-	AUD_LimiterFactory(AUD_IFactory* factory,
+	AUD_LimiterFactory(AUD_Reference<AUD_IFactory> factory,
 					   float start = 0, float end = -1);
 
 	/**
@@ -75,7 +75,7 @@ public:
 	 */
 	float getEnd() const;
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_LIMITERFACTORY

intern/audaspace/FX/AUD_LimiterReader.cpp

@@ -32,30 +32,46 @@
 #include "AUD_LimiterReader.h"
 #include "AUD_Buffer.h"
 
-#include <iostream>
+AUD_LimiterReader::AUD_LimiterReader(AUD_Reference<AUD_IReader> reader,
-
-AUD_LimiterReader::AUD_LimiterReader(AUD_IReader* reader,
 									 float start, float end) :
 		AUD_EffectReader(reader),
-		m_start(int(start * reader->getSpecs().rate)),
+		m_start(start),
-		m_end(int(end * reader->getSpecs().rate))
+		m_end(end)
 {
 	if(m_start > 0)
 	{
+		AUD_Specs specs = m_reader->getSpecs();
+		AUD_Specs specs2;
+
 		if(m_reader->isSeekable())
-			m_reader->seek(m_start);
+			m_reader->seek(m_start * specs.rate);
 		else
 		{
 			// skip first m_start samples by reading them
 			int length = AUD_DEFAULT_BUFFER_SIZE;
-			sample_t* buffer;
+			AUD_Buffer buffer(AUD_DEFAULT_BUFFER_SIZE * AUD_SAMPLE_SIZE(specs));
-			for(int len = m_start;
+			bool eos = false;
-				length == AUD_DEFAULT_BUFFER_SIZE;
+			for(int len = m_start * specs.rate;
-				len -= AUD_DEFAULT_BUFFER_SIZE)
+				length > 0 && !eos;
+				len -= length)
 			{
 				if(len < AUD_DEFAULT_BUFFER_SIZE)
 					length = len;
-				m_reader->read(length, buffer);
+
+				m_reader->read(length, eos, buffer.getBuffer());
+
+				specs2 = m_reader->getSpecs();
+				if(specs2.rate != specs.rate)
+				{
+					len = len * specs2.rate / specs.rate;
+					specs.rate = specs2.rate;
+				}
+
+				if(specs2.channels != specs.channels)
+				{
+					specs = specs2;
+					buffer.assureSize(AUD_DEFAULT_BUFFER_SIZE * AUD_SAMPLE_SIZE(specs));
+				}
 			}
 		}
 	}
@@ -63,35 +79,71 @@ AUD_LimiterReader::AUD_LimiterReader(AUD_IReader* reader,
 
 void AUD_LimiterReader::seek(int position)
 {
-	m_reader->seek(position + m_start);
+	m_reader->seek(position + m_start * m_reader->getSpecs().rate);
 }
 
 int AUD_LimiterReader::getLength() const
 {
 	int len = m_reader->getLength();
-	if(len < 0 || (len > m_end && m_end >= 0))
+	AUD_SampleRate rate = m_reader->getSpecs().rate;
-		len = m_end;
+	if(len < 0 || (len > m_end * rate && m_end >= 0))
-	return len - m_start;
+		len = m_end * rate;
+	return len - m_start * rate;
 }
 
 int AUD_LimiterReader::getPosition() const
 {
 	int pos = m_reader->getPosition();
-	return AUD_MIN(pos, m_end) - m_start;
+	AUD_SampleRate rate = m_reader->getSpecs().rate;
+	return AUD_MIN(pos, m_end * rate) - m_start * rate;
 }
 
-void AUD_LimiterReader::read(int & length, sample_t* & buffer)
+void AUD_LimiterReader::read(int& length, bool& eos, sample_t* buffer)
 {
+	eos = false;
 	if(m_end >= 0)
 	{
 		int position = m_reader->getPosition();
-		if(position + length > m_end)
+		AUD_SampleRate rate = m_reader->getSpecs().rate;
-			length = m_end - position;
+
+		if(position + length > m_end * rate)
+		{
+			length = m_end * rate - position;
+			eos = true;
+		}
+
+		if(position < m_start * rate)
+		{
+			int len2 = length;
+			for(int len = m_start * rate - position;
+				len2 == length && !eos;
+				len -= length)
+			{
+				if(len < length)
+					len2 = len;
+
+				m_reader->read(len2, eos, buffer);
+				position += len2;
+			}
+
+			if(position < m_start * rate)
+			{
+				length = 0;
+				return;
+			}
+		}
+
 		if(length < 0)
 		{
 			length = 0;
 			return;
 		}
 	}
-	m_reader->read(length, buffer);
+	if(eos)
+	{
+		m_reader->read(length, eos, buffer);
+		eos = true;
+	}
+	else
+		m_reader->read(length, eos, buffer);
 }

intern/audaspace/FX/AUD_LimiterReader.h

@@ -35,7 +35,7 @@
 #include "AUD_EffectReader.h"
 
 /**
- * This reader limits another reader in start and end sample.
+ * This reader limits another reader in start and end times.
  */
 class AUD_LimiterReader : public AUD_EffectReader
 {
@@ -43,12 +43,12 @@ private:
 	/**
 	 * The start sample: inclusive.
 	 */
-	const int m_start;
+	const float m_start;
 
 	/**
 	 * The end sample: exlusive.
 	 */
-	const int m_end;
+	const float m_end;
 
 	// hide copy constructor and operator=
 	AUD_LimiterReader(const AUD_LimiterReader&);
@@ -58,16 +58,16 @@ public:
 	/**
 	 * Creates a new limiter reader.
 	 * \param reader The reader to read from.
-	 * \param start The desired start sample (inclusive).
+	 * \param start The desired start time (inclusive).
-	 * \param end The desired end sample (exklusive), a negative value signals
+	 * \param end The desired end time (sample exklusive), a negative value
-	 *            that it should play to the end.
+	 *            signals that it should play to the end.
 	 */
-	AUD_LimiterReader(AUD_IReader* reader, float start = 0, float end = -1);
+	AUD_LimiterReader(AUD_Reference<AUD_IReader> reader, float start = 0, float end = -1);
 
 	virtual void seek(int position);
 	virtual int getLength() const;
 	virtual int getPosition() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_LIMITERREADER

intern/audaspace/FX/AUD_LoopFactory.cpp

@@ -32,7 +32,7 @@
 #include "AUD_LoopFactory.h"
 #include "AUD_LoopReader.h"
 
-AUD_LoopFactory::AUD_LoopFactory(AUD_IFactory* factory, int loop) :
+AUD_LoopFactory::AUD_LoopFactory(AUD_Reference<AUD_IFactory> factory, int loop) :
 		AUD_EffectFactory(factory),
 		m_loop(loop)
 {
@@ -43,7 +43,7 @@ int AUD_LoopFactory::getLoop() const
 	return m_loop;
 }
 
-AUD_IReader* AUD_LoopFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_LoopFactory::createReader()
 {
 	return new AUD_LoopReader(getReader(), m_loop);
 }

intern/audaspace/FX/AUD_LoopFactory.h

@@ -57,14 +57,14 @@ public:
 	 * \param loop The desired loop count, negative values result in endless
 	 *        looping.
 	 */
-	AUD_LoopFactory(AUD_IFactory* factory, int loop = -1);
+	AUD_LoopFactory(AUD_Reference<AUD_IFactory> factory, int loop = -1);
 
 	/**
 	 * Returns the loop count.
 	 */
 	int getLoop() const;
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_LOOPFACTORY

intern/audaspace/FX/AUD_LoopReader.cpp

@@ -34,7 +34,7 @@
 
 #include <cstring>
 
-AUD_LoopReader::AUD_LoopReader(AUD_IReader* reader, int loop) :
+AUD_LoopReader::AUD_LoopReader(AUD_Reference<AUD_IReader> reader, int loop) :
 		AUD_EffectReader(reader), m_count(loop), m_left(loop)
 {
 }
@@ -68,29 +68,20 @@ int AUD_LoopReader::getPosition() const
 	return m_reader->getPosition() * (m_count < 0 ? 1 : m_count);
 }
 
-void AUD_LoopReader::read(int & length, sample_t* & buffer)
+void AUD_LoopReader::read(int& length, bool& eos, sample_t* buffer)
 {
-	AUD_Specs specs = m_reader->getSpecs();
+	const AUD_Specs specs = m_reader->getSpecs();
-	int samplesize = AUD_SAMPLE_SIZE(specs);
 
 	int len = length;
 
-	m_reader->read(len, buffer);
+	m_reader->read(length, eos, buffer);
 
-	if(len < length && m_left)
+	if(length < len && eos && m_left)
 	{
-		int pos = 0;
+		int pos = length;
+		length = len;
 
-		if(m_buffer.getSize() < length * samplesize)
+		while(pos < length && eos && m_left)
-			m_buffer.resize(length * samplesize);
-
-		sample_t* buf = m_buffer.getBuffer();
-
-		memcpy(buf + pos * specs.channels, buffer, len * samplesize);
-
-		pos += len;
-
-		while(pos < length && m_left)
 		{
 			if(m_left > 0)
 				m_left--;
@@ -98,20 +89,15 @@ void AUD_LoopReader::read(int & length, sample_t* & buffer)
 			m_reader->seek(0);
 
 			len = length - pos;
-			m_reader->read(len, buffer);
+			m_reader->read(len, eos, buffer + pos * specs.channels);
 
 			// prevent endless loop
 			if(!len)
 				break;
 
-			memcpy(buf + pos * specs.channels, buffer, len * samplesize);
-
 			pos += len;
 		}
 
 		length = pos;
-		buffer = buf;
 	}
-	else
-		length = len;
 }

intern/audaspace/FX/AUD_LoopReader.h

@@ -42,11 +42,6 @@
 class AUD_LoopReader : public AUD_EffectReader
 {
 private:
-	/**
-	 * The playback buffer.
-	 */
-	AUD_Buffer m_buffer;
-
 	/**
 	 * The loop count.
 	 */
@@ -68,12 +63,12 @@ public:
 	 * \param loop The desired loop count, negative values result in endless
 	 *        looping.
 	 */
-	AUD_LoopReader(AUD_IReader* reader, int loop);
+	AUD_LoopReader(AUD_Reference<AUD_IReader> reader, int loop);
 
 	virtual void seek(int position);
 	virtual int getLength() const;
 	virtual int getPosition() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_LOOPREADER

intern/audaspace/FX/AUD_LowpassFactory.cpp

@@ -38,30 +38,26 @@
 #define M_PI 3.14159265358979323846
 #endif
 
-AUD_LowpassFactory::AUD_LowpassFactory(AUD_IFactory* factory, float frequency,
+AUD_LowpassFactory::AUD_LowpassFactory(AUD_Reference<AUD_IFactory> factory, float frequency,
 									   float Q) :
-		AUD_EffectFactory(factory),
+		AUD_DynamicIIRFilterFactory(factory),
 		m_frequency(frequency),
 		m_Q(Q)
 {
 }
 
-AUD_IReader* AUD_LowpassFactory::createReader() const
+void AUD_LowpassFactory::recalculateCoefficients(AUD_SampleRate rate,
+												 std::vector<float> &b,
+												 std::vector<float> &a)
 {
-	AUD_IReader* reader = getReader();
+	float w0 = 2 * M_PI * m_frequency / rate;
-
-	// calculate coefficients
-	float w0 = 2 * M_PI * m_frequency / reader->getSpecs().rate;
 	float alpha = sin(w0) / (2 * m_Q);
 	float norm = 1 + alpha;
 	float c = cos(w0);
-	std::vector<float> a, b;
 	a.push_back(1);
 	a.push_back(-2 * c / norm);
 	a.push_back((1 - alpha) / norm);
 	b.push_back((1 - c) / (2 * norm));
 	b.push_back((1 - c) / norm);
 	b.push_back(b[0]);
-
-	return new AUD_IIRFilterReader(reader, b, a);
 }

intern/audaspace/FX/AUD_LowpassFactory.h

@@ -32,16 +32,16 @@
 #ifndef AUD_LOWPASSFACTORY
 #define AUD_LOWPASSFACTORY
 
-#include "AUD_EffectFactory.h"
+#include "AUD_DynamicIIRFilterFactory.h"
 
 /**
  * This factory creates a lowpass filter reader.
  */
-class AUD_LowpassFactory : public AUD_EffectFactory
+class AUD_LowpassFactory : public AUD_DynamicIIRFilterFactory
 {
 private:
 	/**
-	 * The attack value in seconds.
+	 * The cutoff frequency.
 	 */
 	const float m_frequency;
 
@@ -61,9 +61,9 @@ public:
 	 * \param frequency The cutoff frequency.
 	 * \param Q The Q factor.
 	 */
-	AUD_LowpassFactory(AUD_IFactory* factory, float frequency, float Q = 1.0f);
+	AUD_LowpassFactory(AUD_Reference<AUD_IFactory> factory, float frequency, float Q = 1.0f);
 
-	virtual AUD_IReader* createReader() const;
+	virtual void recalculateCoefficients(AUD_SampleRate rate, std::vector<float> &b, std::vector<float> &a);
 };
 
 #endif //AUD_LOWPASSFACTORY

intern/audaspace/FX/AUD_PingPongFactory.cpp

@@ -33,26 +33,16 @@
 #include "AUD_DoubleReader.h"
 #include "AUD_ReverseFactory.h"
 
-AUD_PingPongFactory::AUD_PingPongFactory(AUD_IFactory* factory) :
+AUD_PingPongFactory::AUD_PingPongFactory(AUD_Reference<AUD_IFactory> factory) :
 		AUD_EffectFactory(factory)
 {
 }
 
-AUD_IReader* AUD_PingPongFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_PingPongFactory::createReader()
 {
-	AUD_IReader* reader = getReader();
+	AUD_Reference<AUD_IReader> reader = getReader();
-	AUD_IReader* reader2;
 	AUD_ReverseFactory factory(m_factory);
-
+	AUD_Reference<AUD_IReader> reader2 = factory.createReader();
-	try
-	{
-		reader2 = factory.createReader();
-	}
-	catch(AUD_Exception&)
-	{
-		delete reader;
-		throw;
-	}
 
 	return new AUD_DoubleReader(reader, reader2);
 }

intern/audaspace/FX/AUD_PingPongFactory.h

@@ -36,7 +36,7 @@
 
 /**
  * This factory plays another factory first normal, then reversed.
- * \note Readers from the underlying factory must be from the buffer type.
+ * \note Readers from the underlying factory must be reversable with seeking.
  */
 class AUD_PingPongFactory : public AUD_EffectFactory
 {
@@ -50,9 +50,9 @@ public:
 	 * Creates a new ping pong factory.
 	 * \param factory The input factory.
 	 */
-	AUD_PingPongFactory(AUD_IFactory* factory);
+	AUD_PingPongFactory(AUD_Reference<AUD_IFactory> factory);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_PINGPONGFACTORY

intern/audaspace/FX/AUD_PitchFactory.cpp

@@ -33,13 +33,13 @@
 #include "AUD_PitchReader.h"
 #include "AUD_Space.h"
 
-AUD_PitchFactory::AUD_PitchFactory(AUD_IFactory* factory, float pitch) :
+AUD_PitchFactory::AUD_PitchFactory(AUD_Reference<AUD_IFactory> factory, float pitch) :
 		AUD_EffectFactory(factory),
 		m_pitch(pitch)
 {
 }
 
-AUD_IReader* AUD_PitchFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_PitchFactory::createReader()
 {
 	return new AUD_PitchReader(getReader(), m_pitch);
 }

intern/audaspace/FX/AUD_PitchFactory.h

@@ -55,9 +55,9 @@ public:
 	 * \param factory The input factory.
 	 * \param pitch The desired pitch.
 	 */
-	AUD_PitchFactory(AUD_IFactory* factory, float pitch);
+	AUD_PitchFactory(AUD_Reference<AUD_IFactory> factory, float pitch);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_PITCHFACTORY

intern/audaspace/FX/AUD_PitchReader.cpp

@@ -31,7 +31,7 @@
 
 #include "AUD_PitchReader.h"
 
-AUD_PitchReader::AUD_PitchReader(AUD_IReader* reader, float pitch) :
+AUD_PitchReader::AUD_PitchReader(AUD_Reference<AUD_IReader> reader, float pitch) :
 		AUD_EffectReader(reader), m_pitch(pitch)
 {
 }
@@ -39,6 +39,16 @@ AUD_PitchReader::AUD_PitchReader(AUD_IReader* reader, float pitch) :
 AUD_Specs AUD_PitchReader::getSpecs() const
 {
 	AUD_Specs specs = m_reader->getSpecs();
-	specs.rate = (AUD_SampleRate)((int)(specs.rate * m_pitch));
+	specs.rate *= m_pitch;
 	return specs;
 }
+
+float AUD_PitchReader::getPitch() const
+{
+	return m_pitch;
+}
+
+void AUD_PitchReader::setPitch(float pitch)
+{
+	m_pitch = pitch;
+}

intern/audaspace/FX/AUD_PitchReader.h

@@ -43,7 +43,7 @@ private:
 	/**
 	 * The pitch level.
 	 */
-	const float m_pitch;
+	float m_pitch;
 
 	// hide copy constructor and operator=
 	AUD_PitchReader(const AUD_PitchReader&);
@@ -53,11 +53,23 @@ public:
 	/**
 	 * Creates a new pitch reader.
 	 * \param reader The reader to read from.
-	 * \param pitch The size of the buffer.
+	 * \param pitch The pitch value.
 	 */
-	AUD_PitchReader(AUD_IReader* reader, float pitch);
+	AUD_PitchReader(AUD_Reference<AUD_IReader> reader, float pitch);
 
 	virtual AUD_Specs getSpecs() const;
+
+	/**
+	 * Retrieves the pitch.
+	 * \return The current pitch value.
+	 */
+	float getPitch() const;
+
+	/**
+	 * Sets the pitch.
+	 * \param pitch The new pitch value.
+	 */
+	void setPitch(float pitch);
 };
 
 #endif //AUD_PITCHREADER

intern/audaspace/FX/AUD_RectifyFactory.cpp

@@ -34,17 +34,17 @@
 
 #include <cmath>
 
-sample_t rectifyFilter(AUD_CallbackIIRFilterReader* reader, void* useless)
+sample_t AUD_RectifyFactory::rectifyFilter(AUD_CallbackIIRFilterReader* reader, void* useless)
 {
 	return fabs(reader->x(0));
 }
 
-AUD_RectifyFactory::AUD_RectifyFactory(AUD_IFactory* factory) :
+AUD_RectifyFactory::AUD_RectifyFactory(AUD_Reference<AUD_IFactory> factory) :
 		AUD_EffectFactory(factory)
 {
 }
 
-AUD_IReader* AUD_RectifyFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_RectifyFactory::createReader()
 {
 	return new AUD_CallbackIIRFilterReader(getReader(), 1, 1, rectifyFilter);
 }

intern/audaspace/FX/AUD_RectifyFactory.h

@@ -33,6 +33,7 @@
 #define AUD_RECTIFYFACTORY
 
 #include "AUD_EffectFactory.h"
+class AUD_CallbackIIRFilterReader;
 
 /**
  * This factory rectifies another factory.
@@ -49,9 +50,11 @@ public:
 	 * Creates a new rectify factory.
 	 * \param factory The input factory.
 	 */
-	AUD_RectifyFactory(AUD_IFactory* factory);
+	AUD_RectifyFactory(AUD_Reference<AUD_IFactory> factory);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
+
+	static sample_t rectifyFilter(AUD_CallbackIIRFilterReader* reader, void* useless);
 };
 
 #endif //AUD_RECTIFYFACTORY

intern/audaspace/FX/AUD_ReverseFactory.cpp

@@ -33,12 +33,12 @@
 #include "AUD_ReverseReader.h"
 #include "AUD_Space.h"
 
-AUD_ReverseFactory::AUD_ReverseFactory(AUD_IFactory* factory) :
+AUD_ReverseFactory::AUD_ReverseFactory(AUD_Reference<AUD_IFactory> factory) :
 		AUD_EffectFactory(factory)
 {
 }
 
-AUD_IReader* AUD_ReverseFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_ReverseFactory::createReader()
 {
 	return new AUD_ReverseReader(getReader());
 }

intern/audaspace/FX/AUD_ReverseFactory.h

@@ -36,7 +36,7 @@
 
 /**
  * This factory reads another factory reverted.
- * \note Readers from the underlying factory must be from the buffer type.
+ * \note Readers from the underlying factory must be seekable.
  */
 class AUD_ReverseFactory : public AUD_EffectFactory
 {
@@ -50,9 +50,9 @@ public:
 	 * Creates a new reverse factory.
 	 * \param factory The input factory.
 	 */
-	AUD_ReverseFactory(AUD_IFactory* factory);
+	AUD_ReverseFactory(AUD_Reference<AUD_IFactory> factory);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_REVERSEFACTORY

intern/audaspace/FX/AUD_ReverseReader.cpp

@@ -36,7 +36,7 @@
 static const char* props_error = "AUD_ReverseReader: The reader has to be "
 								 "seekable and a finite length.";
 
-AUD_ReverseReader::AUD_ReverseReader(AUD_IReader* reader) :
+AUD_ReverseReader::AUD_ReverseReader(AUD_Reference<AUD_IReader> reader) :
 		AUD_EffectReader(reader),
 		m_length(reader->getLength()),
 		m_position(0)
@@ -60,7 +60,7 @@ int AUD_ReverseReader::getPosition() const
 	return m_position;
 }
 
-void AUD_ReverseReader::read(int & length, sample_t* & buffer)
+void AUD_ReverseReader::read(int& length, bool& eos, sample_t* buffer)
 {
 	// first correct the length
 	if(m_position + length > m_length)
@@ -69,39 +69,39 @@ void AUD_ReverseReader::read(int & length, sample_t* & buffer)
 	if(length <= 0)
 	{
 		length = 0;
+		eos = true;
 		return;
 	}
 
-	AUD_Specs specs = getSpecs();
+	const AUD_Specs specs = getSpecs();
-	int samplesize = AUD_SAMPLE_SIZE(specs);
+	const int samplesize = AUD_SAMPLE_SIZE(specs);
 
-	// resize buffer if needed
+	sample_t temp[AUD_CHANNEL_MAX];
-	if(m_buffer.getSize() < length * samplesize)
-		m_buffer.resize(length * samplesize);
 
-	buffer = m_buffer.getBuffer();
-
-	sample_t* buf;
 	int len = length;
 
 	// read from reader
 	m_reader->seek(m_length - m_position - len);
-	m_reader->read(len, buf);
+	m_reader->read(len, eos, buffer);
 
 	// set null if reader didn't give enough data
 	if(len < length)
-	{
 		memset(buffer, 0, (length - len) * samplesize);
-		buffer += (length - len) * specs.channels;
-	}
 
 	// copy the samples reverted
-	for(int i = 0; i < len; i++)
+	for(int i = 0; i < length / 2; i++)
-		memcpy(buffer + i * specs.channels,
+	{
-			   buf + (len - 1 - i) * specs.channels,
+		memcpy(temp,
+			   buffer + (len - 1 - i) * specs.channels,
 			   samplesize);
+		memcpy(buffer + (len - 1 - i) * specs.channels,
+			   buffer + i * specs.channels,
+			   samplesize);
+		memcpy(buffer + i * specs.channels,
+			   temp,
+			   samplesize);
+	}
 
 	m_position += length;
-
+	eos = false;
-	buffer = m_buffer.getBuffer();
 }

intern/audaspace/FX/AUD_ReverseReader.h

@@ -37,7 +37,7 @@
 
 /**
  * This class reads another reader from back to front.
- * \note The underlying reader must be a buffer.
+ * \note The underlying reader must be seekable.
  */
 class AUD_ReverseReader : public AUD_EffectReader
 {
@@ -52,11 +52,6 @@ private:
 	 */
 	int m_position;
 
-	/**
-	 * The playback buffer.
-	 */
-	AUD_Buffer m_buffer;
-
 	// hide copy constructor and operator=
 	AUD_ReverseReader(const AUD_ReverseReader&);
 	AUD_ReverseReader& operator=(const AUD_ReverseReader&);
@@ -68,12 +63,12 @@ public:
 	 * \exception AUD_Exception Thrown if the reader specified has an
 	 *            undeterminable/infinite length or is not seekable.
 	 */
-	AUD_ReverseReader(AUD_IReader* reader);
+	AUD_ReverseReader(AUD_Reference<AUD_IReader> reader);
 
 	virtual void seek(int position);
 	virtual int getLength() const;
 	virtual int getPosition() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_REVERSEREADER

intern/audaspace/FX/AUD_SquareFactory.cpp

@@ -32,7 +32,7 @@
 #include "AUD_SquareFactory.h"
 #include "AUD_CallbackIIRFilterReader.h"
 
-sample_t squareFilter(AUD_CallbackIIRFilterReader* reader, float* threshold)
+sample_t AUD_SquareFactory::squareFilter(AUD_CallbackIIRFilterReader* reader, float* threshold)
 {
 	float in = reader->x(0);
 	if(in >= *threshold)
@@ -43,12 +43,12 @@ sample_t squareFilter(AUD_CallbackIIRFilterReader* reader, float* threshold)
 		return 0;
 }
 
-void endSquareFilter(float* threshold)
+void AUD_SquareFactory::endSquareFilter(float* threshold)
 {
 	delete threshold;
 }
 
-AUD_SquareFactory::AUD_SquareFactory(AUD_IFactory* factory, float threshold) :
+AUD_SquareFactory::AUD_SquareFactory(AUD_Reference<AUD_IFactory> factory, float threshold) :
 		AUD_EffectFactory(factory),
 		m_threshold(threshold)
 {
@@ -59,7 +59,7 @@ float AUD_SquareFactory::getThreshold() const
 	return m_threshold;
 }
 
-AUD_IReader* AUD_SquareFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_SquareFactory::createReader()
 {
 	return new AUD_CallbackIIRFilterReader(getReader(), 1, 1,
 										   (doFilterIIR) squareFilter,

intern/audaspace/FX/AUD_SquareFactory.h

@@ -33,6 +33,7 @@
 #define AUD_SQUAREFACTORY
 
 #include "AUD_EffectFactory.h"
+class AUD_CallbackIIRFilterReader;
 
 /**
  * This factory Transforms any signal to a square signal.
@@ -55,14 +56,17 @@ public:
 	 * \param factory The input factory.
 	 * \param threshold The threshold.
 	 */
-	AUD_SquareFactory(AUD_IFactory* factory, float threshold = 0.0f);
+	AUD_SquareFactory(AUD_Reference<AUD_IFactory> factory, float threshold = 0.0f);
 
 	/**
 	 * Returns the threshold.
 	 */
 	float getThreshold() const;
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
+
+	static sample_t squareFilter(AUD_CallbackIIRFilterReader* reader, float* threshold);
+	static void endSquareFilter(float* threshold);
 };
 
 #endif //AUD_SQUAREFACTORY

intern/audaspace/FX/AUD_SumFactory.cpp

@@ -32,12 +32,12 @@
 #include "AUD_SumFactory.h"
 #include "AUD_IIRFilterReader.h"
 
-AUD_SumFactory::AUD_SumFactory(AUD_IFactory* factory) :
+AUD_SumFactory::AUD_SumFactory(AUD_Reference<AUD_IFactory> factory) :
 		AUD_EffectFactory(factory)
 {
 }
 
-AUD_IReader* AUD_SumFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_SumFactory::createReader()
 {
 	std::vector<float> a, b;
 	a.push_back(1);

intern/audaspace/FX/AUD_SumFactory.h

@@ -49,9 +49,9 @@ public:
 	 * Creates a new sum factory.
 	 * \param factory The input factory.
 	 */
-	AUD_SumFactory(AUD_IFactory* factory);
+	AUD_SumFactory(AUD_Reference<AUD_IFactory> factory);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_SUMFACTORY

intern/audaspace/FX/AUD_SuperposeFactory.cpp

@@ -32,24 +32,15 @@
 #include "AUD_SuperposeFactory.h"
 #include "AUD_SuperposeReader.h"
 
-AUD_SuperposeFactory::AUD_SuperposeFactory(AUD_IFactory* factory1, AUD_IFactory* factory2) :
+AUD_SuperposeFactory::AUD_SuperposeFactory(AUD_Reference<AUD_IFactory> factory1, AUD_Reference<AUD_IFactory> factory2) :
 		m_factory1(factory1), m_factory2(factory2)
 {
 }
 
-AUD_IReader* AUD_SuperposeFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_SuperposeFactory::createReader()
 {
-	AUD_IReader* reader1 = m_factory1->createReader();
+	AUD_Reference<AUD_IReader> reader1 = m_factory1->createReader();
-	AUD_IReader* reader2;
+	AUD_Reference<AUD_IReader> reader2 = m_factory2->createReader();
-	try
-	{
-		reader2 = m_factory2->createReader();
-	}
-	catch(AUD_Exception&)
-	{
-		delete reader1;
-		throw;
-	}
 
 	return new AUD_SuperposeReader(reader1, reader2);
 }

intern/audaspace/FX/AUD_SuperposeFactory.h

@@ -35,8 +35,9 @@
 #include "AUD_IFactory.h"
 
 /**
- * This factory plays two other factories behind each other.
+ * This factory mixes two other factories, playing them the same time.
- * \note Readers from the underlying factories must have the same sample rate and channel count.
+ * \note Readers from the underlying factories must have the same sample rate
+ *       and channel count.
  */
 class AUD_SuperposeFactory : public AUD_IFactory
 {
@@ -44,12 +45,12 @@ private:
 	/**
 	 * First played factory.
 	 */
-	AUD_IFactory* m_factory1;
+	AUD_Reference<AUD_IFactory> m_factory1;
 
 	/**
 	 * Second played factory.
 	 */
-	AUD_IFactory* m_factory2;
+	AUD_Reference<AUD_IFactory> m_factory2;
 
 	// hide copy constructor and operator=
 	AUD_SuperposeFactory(const AUD_SuperposeFactory&);
@@ -61,9 +62,9 @@ public:
 	 * \param factory1 The first input factory.
 	 * \param factory2 The second input factory.
 	 */
-	AUD_SuperposeFactory(AUD_IFactory* factory1, AUD_IFactory* factory2);
+	AUD_SuperposeFactory(AUD_Reference<AUD_IFactory> factory1, AUD_Reference<AUD_IFactory> factory2);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_SUPERPOSEFACTORY

intern/audaspace/FX/AUD_SuperposeReader.cpp

@@ -36,30 +36,13 @@
 static const char* specs_error = "AUD_SuperposeReader: Both readers have to "
 								 "have the same specs.";
 
-AUD_SuperposeReader::AUD_SuperposeReader(AUD_IReader* reader1, AUD_IReader* reader2) :
+AUD_SuperposeReader::AUD_SuperposeReader(AUD_Reference<AUD_IReader> reader1, AUD_Reference<AUD_IReader> reader2) :
 	m_reader1(reader1), m_reader2(reader2)
 {
-	try
-	{
-		AUD_Specs s1, s2;
-		s1 = reader1->getSpecs();
-		s2 = reader2->getSpecs();
-		if(memcmp(&s1, &s2, sizeof(AUD_Specs)))
-			AUD_THROW(AUD_ERROR_SPECS, specs_error);
-	}
-	catch(AUD_Exception&)
-	{
-		delete reader1;
-		delete reader2;
-
-		throw;
-	}
 }
 
 AUD_SuperposeReader::~AUD_SuperposeReader()
 {
-	delete m_reader1;
-	delete m_reader2;
 }
 
 bool AUD_SuperposeReader::isSeekable() const
@@ -94,28 +77,31 @@ AUD_Specs AUD_SuperposeReader::getSpecs() const
 	return m_reader1->getSpecs();
 }
 
-void AUD_SuperposeReader::read(int & length, sample_t* & buffer)
+void AUD_SuperposeReader::read(int& length, bool& eos, sample_t* buffer)
 {
 	AUD_Specs specs = m_reader1->getSpecs();
+	AUD_Specs s2 = m_reader2->getSpecs();
+	if(!AUD_COMPARE_SPECS(specs, s2))
+		AUD_THROW(AUD_ERROR_SPECS, specs_error);
+
 	int samplesize = AUD_SAMPLE_SIZE(specs);
 
-	if(m_buffer.getSize() < length * samplesize)
+	m_buffer.assureSize(length * samplesize);
-		m_buffer.resize(length * samplesize);
-	buffer = m_buffer.getBuffer();
 
 	int len1 = length;
-	sample_t* buf;
+	m_reader1->read(len1, eos, buffer);
-	m_reader1->read(len1, buf);
-	memcpy(buffer, buf, len1 * samplesize);
 
 	if(len1 < length)
 		memset(buffer + len1 * specs.channels, 0, (length - len1) * samplesize);
 
 	int len2 = length;
-	m_reader2->read(len2, buf);
+	bool eos2;
+	sample_t* buf = m_buffer.getBuffer();
+	m_reader2->read(len2, eos2, buf);
 
 	for(int i = 0; i < len2 * specs.channels; i++)
 		buffer[i] += buf[i];
 
 	length = AUD_MAX(len1, len2);
+	eos &= eos2;
 }

intern/audaspace/FX/AUD_SuperposeReader.h

@@ -34,9 +34,10 @@
 
 #include "AUD_IReader.h"
 #include "AUD_Buffer.h"
+#include "AUD_Reference.h"
 
 /**
- * This reader plays two readers with the same specs sequently.
+ * This reader plays two readers with the same specs in parallel.
  */
 class AUD_SuperposeReader : public AUD_IReader
 {
@@ -44,15 +45,15 @@ private:
 	/**
 	 * The first reader.
 	 */
-	AUD_IReader* m_reader1;
+	AUD_Reference<AUD_IReader> m_reader1;
 
 	/**
 	 * The second reader.
 	 */
-	AUD_IReader* m_reader2;
+	AUD_Reference<AUD_IReader> m_reader2;
 
 	/**
-	 * The playback buffer for the intersecting part.
+	 * Buffer used for mixing.
 	 */
 	AUD_Buffer m_buffer;
 
@@ -67,7 +68,7 @@ public:
 	 * \param reader2 The second reader to read from.
 	 * \exception AUD_Exception Thrown if the specs from the readers differ.
 	 */
-	AUD_SuperposeReader(AUD_IReader* reader1, AUD_IReader* reader2);
+	AUD_SuperposeReader(AUD_Reference<AUD_IReader> reader1, AUD_Reference<AUD_IReader> reader2);
 
 	/**
 	 * Destroys the reader.
@@ -79,7 +80,7 @@ public:
 	virtual int getLength() const;
 	virtual int getPosition() const;
 	virtual AUD_Specs getSpecs() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_SUPERPOSEREADER

intern/audaspace/FX/AUD_VolumeFactory.cpp

@@ -32,7 +32,7 @@
 #include "AUD_VolumeFactory.h"
 #include "AUD_IIRFilterReader.h"
 
-AUD_VolumeFactory::AUD_VolumeFactory(AUD_IFactory* factory, float volume) :
+AUD_VolumeFactory::AUD_VolumeFactory(AUD_Reference<AUD_IFactory> factory, float volume) :
 		AUD_EffectFactory(factory),
 		m_volume(volume)
 {
@@ -43,7 +43,7 @@ float AUD_VolumeFactory::getVolume() const
 	return m_volume;
 }
 
-AUD_IReader* AUD_VolumeFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_VolumeFactory::createReader()
 {
 	std::vector<float> a, b;
 	a.push_back(1);

intern/audaspace/FX/AUD_VolumeFactory.h

@@ -57,14 +57,15 @@ public:
 	 * \param factory The input factory.
 	 * \param volume The desired volume.
 	 */
-	AUD_VolumeFactory(AUD_IFactory* factory, float volume);
+	AUD_VolumeFactory(AUD_Reference<AUD_IFactory> factory, float volume);
 
 	/**
 	 * Returns the volume.
+	 * \return The current volume.
 	 */
 	float getVolume() const;
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_VOLUMEFACTORY

intern/audaspace/OpenAL/AUD_OpenALDevice.h

@@ -33,9 +33,11 @@
 #define AUD_OPENALDEVICE
 
 #include "AUD_IDevice.h"
+#include "AUD_IHandle.h"
 #include "AUD_I3DDevice.h"
-struct AUD_OpenALHandle;
+#include "AUD_I3DHandle.h"
-struct AUD_OpenALBufferedFactory;
+#include "AUD_Buffer.h"
+//struct AUD_OpenALBufferedFactory;
 
 #include <AL/al.h>
 #include <AL/alc.h>
@@ -48,6 +50,110 @@ struct AUD_OpenALBufferedFactory;
 class AUD_OpenALDevice : public AUD_IDevice, public AUD_I3DDevice
 {
 private:
+	/// Saves the data for playback.
+	class AUD_OpenALHandle : public AUD_IHandle, public AUD_I3DHandle
+	{
+	public:
+		static const int CYCLE_BUFFERS = 3;
+
+		/// Whether it's a buffered or a streamed source.
+		bool m_isBuffered;
+
+		/// The reader source.
+		AUD_Reference<AUD_IReader> m_reader;
+
+		/// Whether to keep the source if end of it is reached.
+		bool m_keep;
+
+		/// OpenAL sample format.
+		ALenum m_format;
+
+		/// OpenAL source.
+		ALuint m_source;
+
+		/// OpenAL buffers.
+		ALuint m_buffers[CYCLE_BUFFERS];
+
+		/// The first buffer to be read next.
+		int m_current;
+
+		/// Whether the stream doesn't return any more data.
+		bool m_eos;
+
+		/// The loop count of the source.
+		int m_loopcount;
+
+		/// The stop callback.
+		stopCallback m_stop;
+
+		/// Stop callback data.
+		void* m_stop_data;
+
+		/// Orientation.
+		AUD_Quaternion m_orientation;
+
+		/// Current status of the handle
+		AUD_Status m_status;
+
+		/// Own device.
+		AUD_OpenALDevice* m_device;
+
+	public:
+
+		/**
+		 * Creates a new OpenAL handle.
+		 * \param device The OpenAL device the handle belongs to.
+		 * \param format The AL format.
+		 * \param reader The reader this handle plays.
+		 * \param keep Whether to keep the handle alive when the reader ends.
+		 */
+		AUD_OpenALHandle(AUD_OpenALDevice* device, ALenum format, AUD_Reference<AUD_IReader> reader, bool keep);
+
+		virtual ~AUD_OpenALHandle() {}
+		virtual bool pause();
+		virtual bool resume();
+		virtual bool stop();
+		virtual bool getKeep();
+		virtual bool setKeep(bool keep);
+		virtual bool seek(float position);
+		virtual float getPosition();
+		virtual AUD_Status getStatus();
+		virtual float getVolume();
+		virtual bool setVolume(float volume);
+		virtual float getPitch();
+		virtual bool setPitch(float pitch);
+		virtual int getLoopCount();
+		virtual bool setLoopCount(int count);
+		virtual bool setStopCallback(stopCallback callback = 0, void* data = 0);
+
+		virtual AUD_Vector3 getSourceLocation();
+		virtual bool setSourceLocation(const AUD_Vector3& location);
+		virtual AUD_Vector3 getSourceVelocity();
+		virtual bool setSourceVelocity(const AUD_Vector3& velocity);
+		virtual AUD_Quaternion getSourceOrientation();
+		virtual bool setSourceOrientation(const AUD_Quaternion& orientation);
+		virtual bool isRelative();
+		virtual bool setRelative(bool relative);
+		virtual float getVolumeMaximum();
+		virtual bool setVolumeMaximum(float volume);
+		virtual float getVolumeMinimum();
+		virtual bool setVolumeMinimum(float volume);
+		virtual float getDistanceMaximum();
+		virtual bool setDistanceMaximum(float distance);
+		virtual float getDistanceReference();
+		virtual bool setDistanceReference(float distance);
+		virtual float getAttenuation();
+		virtual bool setAttenuation(float factor);
+		virtual float getConeAngleOuter();
+		virtual bool setConeAngleOuter(float angle);
+		virtual float getConeAngleInner();
+		virtual bool setConeAngleInner(float angle);
+		virtual float getConeVolumeOuter();
+		virtual bool setConeVolumeOuter(float volume);
+	};
+
+	typedef std::list<AUD_Reference<AUD_OpenALHandle> >::iterator AUD_HandleIterator;
+
 	/**
 	 * The OpenAL device handle.
 	 */
@@ -71,17 +177,17 @@ private:
 	/**
 	 * The list of sounds that are currently playing.
 	 */
-	std::list<AUD_OpenALHandle*>* m_playingSounds;
+	std::list<AUD_Reference<AUD_OpenALHandle> > m_playingSounds;
 
 	/**
 	 * The list of sounds that are currently paused.
 	 */
-	std::list<AUD_OpenALHandle*>* m_pausedSounds;
+	std::list<AUD_Reference<AUD_OpenALHandle> > m_pausedSounds;
 
 	/**
 	 * The list of buffered factories.
 	 */
-	std::list<AUD_OpenALBufferedFactory*>* m_bufferedFactories;
+	//std::list<AUD_OpenALBufferedFactory*>* m_bufferedFactories;
 
 	/**
 	 * The mutex for locking.
@@ -104,16 +210,20 @@ private:
 	int m_buffersize;
 
 	/**
-	 * Starts the streaming thread.
+	 * Device buffer.
 	 */
-	void start(bool join = true);
+	AUD_Buffer m_buffer;
 
 	/**
-	 * Checks if a handle is valid.
+	 * Orientation.
-	 * \param handle The handle to check.
-	 * \return Whether the handle is valid.
 	 */
-	bool isValid(AUD_Handle* handle);
+	AUD_Quaternion m_orientation;
+
+	/**
+	 * Starts the streaming thread.
+	 * \param Whether the previous thread should be joined.
+	 */
+	void start(bool join = true);
 
 	/**
 	 * Gets the format according to the specs.
@@ -147,27 +257,13 @@ public:
 	virtual ~AUD_OpenALDevice();
 
 	virtual AUD_DeviceSpecs getSpecs() const;
-	virtual AUD_Handle* play(AUD_IReader* reader, bool keep = false);
+	virtual AUD_Reference<AUD_IHandle> play(AUD_Reference<AUD_IReader> reader, bool keep = false);
-	virtual AUD_Handle* play(AUD_IFactory* factory, bool keep = false);
+	virtual AUD_Reference<AUD_IHandle> play(AUD_Reference<AUD_IFactory> factory, bool keep = false);
-	virtual bool pause(AUD_Handle* handle);
+	virtual void stopAll();
-	virtual bool resume(AUD_Handle* handle);
-	virtual bool stop(AUD_Handle* handle);
-	virtual bool getKeep(AUD_Handle* handle);
-	virtual bool setKeep(AUD_Handle* handle, bool keep);
-	virtual bool seek(AUD_Handle* handle, float position);
-	virtual float getPosition(AUD_Handle* handle);
-	virtual AUD_Status getStatus(AUD_Handle* handle);
 	virtual void lock();
 	virtual void unlock();
 	virtual float getVolume() const;
 	virtual void setVolume(float volume);
-	virtual float getVolume(AUD_Handle* handle);
-	virtual bool setVolume(AUD_Handle* handle, float volume);
-	virtual float getPitch(AUD_Handle* handle);
-	virtual bool setPitch(AUD_Handle* handle, float pitch);
-	virtual int getLoopCount(AUD_Handle* handle);
-	virtual bool setLoopCount(AUD_Handle* handle, int count);
-	virtual bool setStopCallback(AUD_Handle* handle, stopCallback callback = NULL, void* data = NULL);
 
 	virtual AUD_Vector3 getListenerLocation() const;
 	virtual void setListenerLocation(const AUD_Vector3& location);
@@ -181,30 +277,6 @@ public:
 	virtual void setDopplerFactor(float factor);
 	virtual AUD_DistanceModel getDistanceModel() const;
 	virtual void setDistanceModel(AUD_DistanceModel model);
-	virtual AUD_Vector3 getSourceLocation(AUD_Handle* handle);
-	virtual bool setSourceLocation(AUD_Handle* handle, const AUD_Vector3& location);
-	virtual AUD_Vector3 getSourceVelocity(AUD_Handle* handle);
-	virtual bool setSourceVelocity(AUD_Handle* handle, const AUD_Vector3& velocity);
-	virtual AUD_Quaternion getSourceOrientation(AUD_Handle* handle);
-	virtual bool setSourceOrientation(AUD_Handle* handle, const AUD_Quaternion& orientation);
-	virtual bool isRelative(AUD_Handle* handle);
-	virtual bool setRelative(AUD_Handle* handle, bool relative);
-	virtual float getVolumeMaximum(AUD_Handle* handle);
-	virtual bool setVolumeMaximum(AUD_Handle* handle, float volume);
-	virtual float getVolumeMinimum(AUD_Handle* handle);
-	virtual bool setVolumeMinimum(AUD_Handle* handle, float volume);
-	virtual float getDistanceMaximum(AUD_Handle* handle);
-	virtual bool setDistanceMaximum(AUD_Handle* handle, float distance);
-	virtual float getDistanceReference(AUD_Handle* handle);
-	virtual bool setDistanceReference(AUD_Handle* handle, float distance);
-	virtual float getAttenuation(AUD_Handle* handle);
-	virtual bool setAttenuation(AUD_Handle* handle, float factor);
-	virtual float getConeAngleOuter(AUD_Handle* handle);
-	virtual bool setConeAngleOuter(AUD_Handle* handle, float angle);
-	virtual float getConeAngleInner(AUD_Handle* handle);
-	virtual bool setConeAngleInner(AUD_Handle* handle, float angle);
-	virtual float getConeVolumeOuter(AUD_Handle* handle);
-	virtual bool setConeVolumeOuter(AUD_Handle* handle, float volume);
 };
 
 #endif //AUD_OPENALDEVICE

intern/audaspace/Python/AUD_PyAPI.h

@@ -36,35 +36,38 @@
 
 #ifdef __cplusplus
 extern "C" {
-#include "AUD_IDevice.h"
 #else
 typedef void AUD_IFactory;
 typedef void AUD_IDevice;
-typedef void AUD_Handle;
+typedef void AUD_IHandle;
 #endif
 
+typedef void AUD_Reference_AUD_IFactory;
+typedef void AUD_Reference_AUD_IDevice;
+typedef void AUD_Reference_AUD_IHandle;
+
 typedef struct {
 	PyObject_HEAD
 	PyObject* child_list;
-	AUD_IFactory* factory;
+	AUD_Reference_AUD_IFactory* factory;
 } Factory;
 
 typedef struct {
 	PyObject_HEAD
-	AUD_Handle* handle;
+	AUD_Reference_AUD_IHandle* handle;
-	PyObject* device;
 } Handle;
 
 typedef struct {
 	PyObject_HEAD
-	AUD_IDevice* device;
+	AUD_Reference_AUD_IDevice* device;
 } Device;
 
 PyMODINIT_FUNC
 PyInit_aud(void);
 
-extern PyObject *
+extern PyObject* Device_empty();
-Device_empty();
+extern PyObject* Factory_empty();
+extern Factory* checkFactory(PyObject* factory);
 
 #ifdef __cplusplus
 }

intern/audaspace/SRC/AUD_SRCResampleFactory.cpp

@@ -32,18 +32,13 @@
 #include "AUD_SRCResampleFactory.h"
 #include "AUD_SRCResampleReader.h"
 
-AUD_SRCResampleFactory::AUD_SRCResampleFactory(AUD_IFactory* factory,
+AUD_SRCResampleFactory::AUD_SRCResampleFactory(AUD_Reference<AUD_IFactory> factory,
 											   AUD_DeviceSpecs specs) :
-		AUD_ResampleFactory(factory, specs)
+		AUD_MixerFactory(factory, specs)
 {
 }
 
-AUD_IReader* AUD_SRCResampleFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_SRCResampleFactory::createReader()
 {
-	AUD_IReader* reader = getReader();
+	return new AUD_SRCResampleReader(getReader(), m_specs.specs);
-
-	if(reader->getSpecs().rate != m_specs.rate)
-		reader = new AUD_SRCResampleReader(reader, m_specs.specs);
-
-	return reader;
 }

intern/audaspace/SRC/AUD_SRCResampleFactory.h

@@ -32,13 +32,13 @@
 #ifndef AUD_SRCRESAMPLEFACTORY
 #define AUD_SRCRESAMPLEFACTORY
 
-#include "AUD_ResampleFactory.h"
+#include "AUD_MixerFactory.h"
 
 /**
  * This factory creates a resampling reader that uses libsamplerate for
  * resampling.
  */
-class AUD_SRCResampleFactory : public AUD_ResampleFactory
+class AUD_SRCResampleFactory : public AUD_MixerFactory
 {
 private:
 	// hide copy constructor and operator=
@@ -46,9 +46,14 @@ private:
 	AUD_SRCResampleFactory& operator=(const AUD_SRCResampleFactory&);
 
 public:
-	AUD_SRCResampleFactory(AUD_IFactory* factory, AUD_DeviceSpecs specs);
+	/**
+	 * Creates a new factory.
+	 * \param factory The input factory.
+	 * \param specs The target specifications.
+	 */
+	AUD_SRCResampleFactory(AUD_Reference<AUD_IFactory> factory, AUD_DeviceSpecs specs);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_SRCRESAMPLEFACTORY

intern/audaspace/SRC/AUD_SRCResampleReader.cpp

@@ -43,20 +43,16 @@ static long src_callback(void *cb_data, float **data)
 static const char* state_error = "AUD_SRCResampleReader: SRC State couldn't be "
 								 "created.";
 
-AUD_SRCResampleReader::AUD_SRCResampleReader(AUD_IReader* reader,
+AUD_SRCResampleReader::AUD_SRCResampleReader(AUD_Reference<AUD_IReader> reader,
 											 AUD_Specs specs) :
-		AUD_EffectReader(reader),
+		AUD_ResampleReader(reader, specs.rate),
-		m_sspecs(reader->getSpecs()),
+		m_channels(reader->getSpecs().channels),
-		m_factor(double(specs.rate) / double(m_sspecs.rate)),
-		m_tspecs(specs),
 		m_position(0)
 {
-	m_tspecs.channels = m_sspecs.channels;
-
 	int error;
 	m_src = src_callback_new(src_callback,
 							 SRC_SINC_MEDIUM_QUALITY,
-							 m_sspecs.channels,
+							 m_channels,
 							 &error,
 							 this);
 
@@ -74,25 +70,32 @@ AUD_SRCResampleReader::~AUD_SRCResampleReader()
 
 long AUD_SRCResampleReader::doCallback(float** data)
 {
-	int length = m_buffer.getSize() / AUD_SAMPLE_SIZE(m_tspecs);
+	AUD_Specs specs;
-	sample_t* buffer;
+	specs.channels = m_channels;
+	specs.rate = m_rate;
 
-	m_reader->read(length, buffer);
+	int length = m_buffer.getSize() / AUD_SAMPLE_SIZE(specs);
+
+	*data = m_buffer.getBuffer();
+	m_reader->read(length, m_eos, *data);
 
-	*data = buffer;
 	return length;
 }
 
 void AUD_SRCResampleReader::seek(int position)
 {
-	m_reader->seek(position / m_factor);
+	AUD_Specs specs = m_reader->getSpecs();
+	double factor = double(m_rate) / double(specs.rate);
+	m_reader->seek(position / factor);
 	src_reset(m_src);
 	m_position = position;
 }
 
 int AUD_SRCResampleReader::getLength() const
 {
-	return m_reader->getLength() * m_factor;
+	AUD_Specs specs = m_reader->getSpecs();
+	double factor = double(m_rate) / double(specs.rate);
+	return m_reader->getLength() * factor;
 }
 
 int AUD_SRCResampleReader::getPosition() const
@@ -102,19 +105,48 @@ int AUD_SRCResampleReader::getPosition() const
 
 AUD_Specs AUD_SRCResampleReader::getSpecs() const
 {
-	return m_tspecs;
+	AUD_Specs specs = m_reader->getSpecs();
+	specs.rate = m_rate;
+	return specs;
 }
 
-void AUD_SRCResampleReader::read(int & length, sample_t* & buffer)
+void AUD_SRCResampleReader::read(int& length, bool& eos, sample_t* buffer)
 {
-	int size = length * AUD_SAMPLE_SIZE(m_tspecs);
+	AUD_Specs specs = m_reader->getSpecs();
 
-	if(m_buffer.getSize() < size)
+	double factor = double(m_rate) / double(specs.rate);
-		m_buffer.resize(size);
 
-	buffer = m_buffer.getBuffer();
+	specs.rate = m_rate;
 
-	length = src_callback_read(m_src, m_factor, length, buffer);
+	int size = length;
+
+	m_buffer.assureSize(length * AUD_SAMPLE_SIZE(specs));
+
+	if(specs.channels != m_channels)
+	{
+		src_delete(m_src);
+
+		m_channels = specs.channels;
+
+		int error;
+		m_src = src_callback_new(src_callback,
+								 SRC_SINC_MEDIUM_QUALITY,
+								 m_channels,
+								 &error,
+								 this);
+
+		if(!m_src)
+		{
+			// XXX printf("%s\n", src_strerror(error));
+			AUD_THROW(AUD_ERROR_SRC, state_error);
+		}
+	}
+
+	m_eos = false;
+
+	length = src_callback_read(m_src, factor, length, buffer);
 
 	m_position += length;
+
+	eos = m_eos && (length < size);
 }

intern/audaspace/SRC/AUD_SRCResampleReader.h

@@ -32,7 +32,7 @@
 #ifndef AUD_SRCRESAMPLEREADER
 #define AUD_SRCRESAMPLEREADER
 
-#include "AUD_EffectReader.h"
+#include "AUD_ResampleReader.h"
 #include "AUD_Buffer.h"
 
 #include <samplerate.h>
@@ -40,28 +40,18 @@
 /**
  * This resampling reader uses libsamplerate for resampling.
  */
-class AUD_SRCResampleReader : public AUD_EffectReader
+class AUD_SRCResampleReader : public AUD_ResampleReader
 {
 private:
-	/**
-	 * The sample specification of the source.
-	 */
-	const AUD_Specs m_sspecs;
-
-	/**
-	 * The resampling factor.
-	 */
-	const double m_factor;
-
 	/**
 	 * The sound output buffer.
 	 */
 	AUD_Buffer m_buffer;
 
 	/**
-	 * The target specification.
+	 * The reader channels.
 	 */
-	AUD_Specs m_tspecs;
+	AUD_Channels m_channels;
 
 	/**
 	 * The src state structure.
@@ -73,6 +63,11 @@ private:
 	 */
 	int m_position;
 
+	/**
+	 * Whether reader reached end of stream.
+	 */
+	bool m_eos;
+
 	// hide copy constructor and operator=
 	AUD_SRCResampleReader(const AUD_SRCResampleReader&);
 	AUD_SRCResampleReader& operator=(const AUD_SRCResampleReader&);
@@ -85,7 +80,7 @@ public:
 	 * \exception AUD_Exception Thrown if the source specification cannot be
 	 *            resampled to the target specification.
 	 */
-	AUD_SRCResampleReader(AUD_IReader* reader, AUD_Specs specs);
+	AUD_SRCResampleReader(AUD_Reference<AUD_IReader> reader, AUD_Specs specs);
 
 	/**
 	 * Destroys the reader.
@@ -104,7 +99,7 @@ public:
 	virtual int getLength() const;
 	virtual int getPosition() const;
 	virtual AUD_Specs getSpecs() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_SRCRESAMPLEREADER

intern/audaspace/ffmpeg/AUD_FFMPEGFactory.cpp

@@ -36,7 +36,6 @@
 
 #include "AUD_FFMPEGFactory.h"
 #include "AUD_FFMPEGReader.h"
-#include "AUD_Buffer.h"
 
 AUD_FFMPEGFactory::AUD_FFMPEGFactory(std::string filename) :
 		m_filename(filename)
@@ -46,13 +45,13 @@ AUD_FFMPEGFactory::AUD_FFMPEGFactory(std::string filename) :
 AUD_FFMPEGFactory::AUD_FFMPEGFactory(const data_t* buffer, int size) :
 		m_buffer(new AUD_Buffer(size))
 {
-	memcpy(m_buffer.get()->getBuffer(), buffer, size);
+	memcpy(m_buffer->getBuffer(), buffer, size);
 }
 
-AUD_IReader* AUD_FFMPEGFactory::createReader() const
+AUD_Reference<AUD_IReader> AUD_FFMPEGFactory::createReader()
 {
-	if(m_buffer.get())
+	if(m_buffer.isNull())
-		return new AUD_FFMPEGReader(m_buffer);
-	else
 		return new AUD_FFMPEGReader(m_filename);
+	else
+		return new AUD_FFMPEGReader(m_buffer);
 }

intern/audaspace/ffmpeg/AUD_FFMPEGFactory.h

@@ -34,7 +34,7 @@
 
 #include "AUD_IFactory.h"
 #include "AUD_Reference.h"
-class AUD_Buffer;
+#include "AUD_Buffer.h"
 
 #include <string>
 
@@ -74,7 +74,7 @@ public:
 	 */
 	AUD_FFMPEGFactory(const data_t* buffer, int size);
 
-	virtual AUD_IReader* createReader() const;
+	virtual AUD_Reference<AUD_IReader> createReader();
 };
 
 #endif //AUD_FFMPEGFACTORY

intern/audaspace/ffmpeg/AUD_FFMPEGReader.cpp

@@ -39,6 +39,7 @@
 extern "C" {
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
+#include <libavformat/avio.h>
 #include "ffmpeg_compat.h"
 }
 
@@ -176,11 +177,12 @@ static const char* fileopen_error = "AUD_FFMPEGReader: File couldn't be "
 
 AUD_FFMPEGReader::AUD_FFMPEGReader(std::string filename) :
 	m_pkgbuf(AVCODEC_MAX_AUDIO_FRAME_SIZE<<1),
-	m_byteiocontext(NULL),
+	m_formatCtx(NULL),
+	m_aviocontext(NULL),
 	m_membuf(NULL)
 {
 	// open file
-	if(av_open_input_file(&m_formatCtx, filename.c_str(), NULL, 0, NULL)!=0)
+	if(avformat_open_input(&m_formatCtx, filename.c_str(), NULL, NULL)!=0)
 		AUD_THROW(AUD_ERROR_FILE, fileopen_error);
 
 	try
@@ -204,25 +206,20 @@ AUD_FFMPEGReader::AUD_FFMPEGReader(AUD_Reference<AUD_Buffer> buffer) :
 {
 	m_membuf = reinterpret_cast<data_t*>(av_malloc(FF_MIN_BUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE));
 
-	m_byteiocontext = av_alloc_put_byte(m_membuf, FF_MIN_BUFFER_SIZE, 0, this,
+	m_aviocontext = avio_alloc_context(m_membuf, FF_MIN_BUFFER_SIZE, 0, this,
 									   read_packet, NULL, seek_packet);
 
-	if(!m_byteiocontext)
+	if(!m_aviocontext)
 	{
-		av_free(m_byteiocontext);
+		av_free(m_aviocontext);
 		AUD_THROW(AUD_ERROR_FILE, fileopen_error);
 	}
 
-	AVProbeData probe_data;
+	m_formatCtx = avformat_alloc_context();
-	probe_data.filename = "";
+	m_formatCtx->pb = m_aviocontext;
-	probe_data.buf = reinterpret_cast<data_t*>(buffer.get()->getBuffer());
+	if(avformat_open_input(&m_formatCtx, "", NULL, NULL)!=0)
-	probe_data.buf_size = buffer.get()->getSize();
-	AVInputFormat* fmt = av_probe_input_format(&probe_data, 1);
-
-	// open stream
-	if(av_open_input_stream(&m_formatCtx, m_byteiocontext, "", fmt, NULL)!=0)
 	{
-		av_free(m_byteiocontext);
+		av_free(m_aviocontext);
 		AUD_THROW(AUD_ERROR_FILE, streamopen_error);
 	}
 
@@ -233,7 +230,7 @@ AUD_FFMPEGReader::AUD_FFMPEGReader(AUD_Reference<AUD_Buffer> buffer) :
 	catch(AUD_Exception&)
 	{
 		av_close_input_stream(m_formatCtx);
-		av_free(m_byteiocontext);
+		av_free(m_aviocontext);
 		throw;
 	}
 }
@@ -242,10 +239,10 @@ AUD_FFMPEGReader::~AUD_FFMPEGReader()
 {
 	avcodec_close(m_codecCtx);
 
-	if(m_byteiocontext)
+	if(m_aviocontext)
 	{
 		av_close_input_stream(m_formatCtx);
-		av_free(m_byteiocontext);
+		av_free(m_aviocontext);
 	}
 	else
 		av_close_input_file(m_formatCtx);
@@ -255,12 +252,12 @@ int AUD_FFMPEGReader::read_packet(void* opaque, uint8_t* buf, int buf_size)
 {
 	AUD_FFMPEGReader* reader = reinterpret_cast<AUD_FFMPEGReader*>(opaque);
 
-	int size = AUD_MIN(buf_size, reader->m_membuffer.get()->getSize() - reader->m_membufferpos);
+	int size = AUD_MIN(buf_size, reader->m_membuffer->getSize() - reader->m_membufferpos);
 
 	if(size < 0)
 		return -1;
 
-	memcpy(buf, ((data_t*)reader->m_membuffer.get()->getBuffer()) + reader->m_membufferpos, size);
+	memcpy(buf, ((data_t*)reader->m_membuffer->getBuffer()) + reader->m_membufferpos, size);
 	reader->m_membufferpos += size;
 
 	return size;
@@ -276,10 +273,10 @@ int64_t AUD_FFMPEGReader::seek_packet(void* opaque, int64_t offset, int whence)
 		reader->m_membufferpos = 0;
 		break;
 	case SEEK_END:
-		reader->m_membufferpos = reader->m_membuffer.get()->getSize();
+		reader->m_membufferpos = reader->m_membuffer->getSize();
 		break;
 	case AVSEEK_SIZE:
-		return reader->m_membuffer.get()->getSize();
+		return reader->m_membuffer->getSize();
 	}
 
 	return (reader->m_membufferpos += offset);
@@ -341,14 +338,15 @@ void AUD_FFMPEGReader::seek(int position)
 						{
 							// read until we're at the right position
 							int length = AUD_DEFAULT_BUFFER_SIZE;
-							sample_t* buffer;
+							AUD_Buffer buffer(length * AUD_SAMPLE_SIZE(m_specs));
+							bool eos;
 							for(int len = position - m_position;
 								length == AUD_DEFAULT_BUFFER_SIZE;
 								len -= AUD_DEFAULT_BUFFER_SIZE)
 							{
 								if(len < AUD_DEFAULT_BUFFER_SIZE)
 									length = len;
-								read(length, buffer);
+								read(length, eos, buffer.getBuffer());
 							}
 						}
 					}
@@ -381,7 +379,7 @@ AUD_Specs AUD_FFMPEGReader::getSpecs() const
 	return m_specs.specs;
 }
 
-void AUD_FFMPEGReader::read(int & length, sample_t* & buffer)
+void AUD_FFMPEGReader::read(int& length, bool& eos, sample_t* buffer)
 {
 	// read packages and decode them
 	AVPacket packet;
@@ -390,11 +388,7 @@ void AUD_FFMPEGReader::read(int & length, sample_t* & buffer)
 	int left = length;
 	int sample_size = AUD_DEVICE_SAMPLE_SIZE(m_specs);
 
-	// resize output buffer if necessary
+	sample_t* buf = buffer;
-	if(m_buffer.getSize() < length * AUD_SAMPLE_SIZE(m_specs))
-		m_buffer.resize(length * AUD_SAMPLE_SIZE(m_specs));
-
-	buffer = m_buffer.getBuffer();
 	pkgbuf_pos = m_pkgbuf_left;
 	m_pkgbuf_left = 0;
 
@@ -402,9 +396,9 @@ void AUD_FFMPEGReader::read(int & length, sample_t* & buffer)
 	if(pkgbuf_pos > 0)
 	{
 		data_size = AUD_MIN(pkgbuf_pos, left * sample_size);
-		m_convert((data_t*) buffer, (data_t*) m_pkgbuf.getBuffer(),
+		m_convert((data_t*) buf, (data_t*) m_pkgbuf.getBuffer(),
 				  data_size / AUD_FORMAT_SIZE(m_specs.format));
-		buffer += data_size / AUD_FORMAT_SIZE(m_specs.format);
+		buf += data_size / AUD_FORMAT_SIZE(m_specs.format);
 		left -= data_size/sample_size;
 	}
 
@@ -419,9 +413,9 @@ void AUD_FFMPEGReader::read(int & length, sample_t* & buffer)
 
 			// copy to output buffer
 			data_size = AUD_MIN(pkgbuf_pos, left * sample_size);
-			m_convert((data_t*) buffer, (data_t*) m_pkgbuf.getBuffer(),
+			m_convert((data_t*) buf, (data_t*) m_pkgbuf.getBuffer(),
 					  data_size / AUD_FORMAT_SIZE(m_specs.format));
-			buffer += data_size / AUD_FORMAT_SIZE(m_specs.format);
+			buf += data_size / AUD_FORMAT_SIZE(m_specs.format);
 			left -= data_size/sample_size;
 		}
 		av_free_packet(&packet);
@@ -435,9 +429,8 @@ void AUD_FFMPEGReader::read(int & length, sample_t* & buffer)
 				pkgbuf_pos-data_size);
 	}
 
-	buffer = m_buffer.getBuffer();
+	if((eos = (left > 0)))
-
-	if(left > 0)
 		length -= left;
+
 	m_position += length;
 }

intern/audaspace/ffmpeg/AUD_FFMPEGReader.h

@@ -49,8 +49,6 @@ extern "C" {
  * \warning Seeking may not be accurate! Moreover the position is updated after
  *          a buffer reading call. So calling getPosition right after seek
  *          normally results in a wrong value.
- * \warning Playback of an ogg with some outdated ffmpeg versions results in a
- *          segfault on windows.
  */
 class AUD_FFMPEGReader : public AUD_IReader
 {
@@ -60,11 +58,6 @@ private:
 	 */
 	int m_position;
 
-	/**
-	 * The playback buffer.
-	 */
-	AUD_Buffer m_buffer;
-
 	/**
 	 * The specification of the audio data.
 	 */
@@ -91,9 +84,9 @@ private:
 	AVCodecContext* m_codecCtx;
 
 	/**
-	 * The ByteIOContext to read the data from.
+	 * The AVIOContext to read the data from.
 	 */
-	ByteIOContext* m_byteiocontext;
+	AVIOContext* m_aviocontext;
 
 	/**
 	 * The stream ID in the file.
@@ -167,7 +160,7 @@ public:
 	virtual int getLength() const;
 	virtual int getPosition() const;
 	virtual AUD_Specs getSpecs() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_FFMPEGREADER

intern/audaspace/ffmpeg/AUD_FFMPEGWriter.cpp

@@ -0,0 +1,305 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/ffmpeg/AUD_FFMPEGWriter.cpp
+ *  \ingroup audffmpeg
+ */
+
+
+// needed for INT64_C
+#ifndef __STDC_CONSTANT_MACROS
+#define __STDC_CONSTANT_MACROS
+#endif
+
+#include "AUD_FFMPEGWriter.h"
+
+extern "C" {
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
+#include <libavformat/avio.h>
+#include "ffmpeg_compat.h"
+}
+
+static const char* context_error = "AUD_FFMPEGWriter: Couldn't allocate context.";
+static const char* codec_error = "AUD_FFMPEGWriter: Invalid codec or codec not found.";
+static const char* stream_error = "AUD_FFMPEGWriter: Couldn't allocate stream.";
+static const char* format_error = "AUD_FFMPEGWriter: Unsupported sample format.";
+static const char* file_error = "AUD_FFMPEGWriter: File couldn't be written.";
+static const char* write_error = "AUD_FFMPEGWriter: Error writing packet.";
+
+AUD_FFMPEGWriter::AUD_FFMPEGWriter(std::string filename, AUD_DeviceSpecs specs, AUD_Container format, AUD_Codec codec, unsigned int bitrate) :
+	m_position(0),
+	m_specs(specs),
+	m_input_samples(0)
+{
+	static const char* formats[] = { NULL, "ac3", "flac", "matroska", "mp2", "mp3", "ogg", "wav" };
+
+	if(avformat_alloc_output_context2(&m_formatCtx, NULL, formats[format], filename.c_str()))
+		AUD_THROW(AUD_ERROR_FFMPEG, context_error);
+
+	m_outputFmt = m_formatCtx->oformat;
+
+	switch(codec)
+	{
+	case AUD_CODEC_AAC:
+		m_outputFmt->audio_codec = CODEC_ID_AAC;
+		break;
+	case AUD_CODEC_AC3:
+		m_outputFmt->audio_codec = CODEC_ID_AC3;
+		break;
+	case AUD_CODEC_FLAC:
+		m_outputFmt->audio_codec = CODEC_ID_FLAC;
+		break;
+	case AUD_CODEC_MP2:
+		m_outputFmt->audio_codec = CODEC_ID_MP2;
+		break;
+	case AUD_CODEC_MP3:
+		m_outputFmt->audio_codec = CODEC_ID_MP3;
+		break;
+	case AUD_CODEC_PCM:
+		switch(specs.format)
+		{
+		case AUD_FORMAT_U8:
+			m_outputFmt->audio_codec = CODEC_ID_PCM_U8;
+			break;
+		case AUD_FORMAT_S16:
+			m_outputFmt->audio_codec = CODEC_ID_PCM_S16LE;
+			break;
+		case AUD_FORMAT_S24:
+			m_outputFmt->audio_codec = CODEC_ID_PCM_S24LE;
+			break;
+		case AUD_FORMAT_S32:
+			m_outputFmt->audio_codec = CODEC_ID_PCM_S32LE;
+			break;
+		case AUD_FORMAT_FLOAT32:
+			m_outputFmt->audio_codec = CODEC_ID_PCM_F32LE;
+			break;
+		case AUD_FORMAT_FLOAT64:
+			m_outputFmt->audio_codec = CODEC_ID_PCM_F64LE;
+			break;
+		default:
+			m_outputFmt->audio_codec = CODEC_ID_NONE;
+			break;
+		}
+		break;
+	case AUD_CODEC_VORBIS:
+		m_outputFmt->audio_codec = CODEC_ID_VORBIS;
+		break;
+	default:
+		m_outputFmt->audio_codec = CODEC_ID_NONE;
+		break;
+	}
+
+	try
+	{
+		if(m_outputFmt->audio_codec == CODEC_ID_NONE)
+			AUD_THROW(AUD_ERROR_SPECS, codec_error);
+
+		m_stream = av_new_stream(m_formatCtx, 0);
+		if(!m_stream)
+			AUD_THROW(AUD_ERROR_FFMPEG, stream_error);
+
+		m_codecCtx = m_stream->codec;
+		m_codecCtx->codec_id = m_outputFmt->audio_codec;
+		m_codecCtx->codec_type = AVMEDIA_TYPE_AUDIO;
+		m_codecCtx->bit_rate = bitrate;
+		m_codecCtx->sample_rate = int(m_specs.rate);
+		m_codecCtx->channels = m_specs.channels;
+		m_codecCtx->time_base.num = 1;
+		m_codecCtx->time_base.den = m_codecCtx->sample_rate;
+
+		switch(m_specs.format)
+		{
+		case AUD_FORMAT_U8:
+			m_convert = AUD_convert_float_u8;
+			m_codecCtx->sample_fmt = SAMPLE_FMT_U8;
+			break;
+		case AUD_FORMAT_S16:
+			m_convert = AUD_convert_float_s16;
+			m_codecCtx->sample_fmt = SAMPLE_FMT_S16;
+			break;
+		case AUD_FORMAT_S32:
+			m_convert = AUD_convert_float_s32;
+			m_codecCtx->sample_fmt = SAMPLE_FMT_S32;
+			break;
+		case AUD_FORMAT_FLOAT32:
+			m_convert = AUD_convert_copy<float>;
+			m_codecCtx->sample_fmt = SAMPLE_FMT_FLT;
+			break;
+		case AUD_FORMAT_FLOAT64:
+			m_convert = AUD_convert_float_double;
+			m_codecCtx->sample_fmt = SAMPLE_FMT_DBL;
+			break;
+		default:
+			AUD_THROW(AUD_ERROR_FFMPEG, format_error);
+		}
+
+		try
+		{
+			if(m_formatCtx->oformat->flags & AVFMT_GLOBALHEADER)
+				m_codecCtx->flags |= CODEC_FLAG_GLOBAL_HEADER;
+
+			AVCodec* codec = avcodec_find_encoder(m_codecCtx->codec_id);
+			if(!codec)
+				AUD_THROW(AUD_ERROR_FFMPEG, codec_error);
+
+			if(avcodec_open(m_codecCtx, codec))
+				AUD_THROW(AUD_ERROR_FFMPEG, codec_error);
+
+			m_output_buffer.resize(FF_MIN_BUFFER_SIZE);
+			int samplesize = AUD_MAX(AUD_SAMPLE_SIZE(m_specs), AUD_DEVICE_SAMPLE_SIZE(m_specs));
+
+			if(m_codecCtx->frame_size <= 1)
+				m_input_size = 0;
+			else
+			{
+				m_input_buffer.resize(m_codecCtx->frame_size * samplesize);
+				m_input_size = m_codecCtx->frame_size;
+			}
+
+			try
+			{
+				if(avio_open(&m_formatCtx->pb, filename.c_str(), AVIO_FLAG_WRITE))
+					AUD_THROW(AUD_ERROR_FILE, file_error);
+
+				avformat_write_header(m_formatCtx, NULL);
+			}
+			catch(AUD_Exception&)
+			{
+				avcodec_close(m_codecCtx);
+				av_freep(&m_formatCtx->streams[0]->codec);
+				throw;
+			}
+		}
+		catch(AUD_Exception&)
+		{
+			av_freep(&m_formatCtx->streams[0]);
+			throw;
+		}
+	}
+	catch(AUD_Exception&)
+	{
+		av_free(m_formatCtx);
+		throw;
+	}
+}
+
+AUD_FFMPEGWriter::~AUD_FFMPEGWriter()
+{
+	// writte missing data
+	if(m_input_samples)
+	{
+		sample_t* buf = m_input_buffer.getBuffer();
+		memset(buf + m_specs.channels * m_input_samples, 0,
+			   (m_input_size - m_input_samples) * AUD_DEVICE_SAMPLE_SIZE(m_specs));
+
+		encode(buf);
+	}
+
+	av_write_trailer(m_formatCtx);
+
+	avcodec_close(m_codecCtx);
+
+	av_freep(&m_formatCtx->streams[0]->codec);
+	av_freep(&m_formatCtx->streams[0]);
+
+	avio_close(m_formatCtx->pb);
+	av_free(m_formatCtx);
+}
+
+int AUD_FFMPEGWriter::getPosition() const
+{
+	return m_position;
+}
+
+AUD_DeviceSpecs AUD_FFMPEGWriter::getSpecs() const
+{
+	return m_specs;
+}
+
+void AUD_FFMPEGWriter::encode(sample_t* data)
+{
+	sample_t* outbuf = m_output_buffer.getBuffer();
+
+	// convert first
+	if(m_input_size)
+		m_convert(reinterpret_cast<data_t*>(data), reinterpret_cast<data_t*>(data), m_input_size * m_specs.channels);
+
+	AVPacket packet;
+	av_init_packet(&packet);
+	packet.size = avcodec_encode_audio(m_codecCtx, reinterpret_cast<uint8_t*>(outbuf), m_output_buffer.getSize(), reinterpret_cast<short*>(data));
+	if(m_codecCtx->coded_frame && m_codecCtx->coded_frame->pts != AV_NOPTS_VALUE)
+		packet.pts = av_rescale_q(m_codecCtx->coded_frame->pts, m_codecCtx->time_base, m_stream->time_base);
+	packet.flags |= AV_PKT_FLAG_KEY;
+	packet.stream_index = m_stream->index;
+	packet.data = reinterpret_cast<uint8_t*>(outbuf);
+
+	if(av_interleaved_write_frame(m_formatCtx, &packet))
+		AUD_THROW(AUD_ERROR_FFMPEG, write_error);
+}
+
+void AUD_FFMPEGWriter::write(unsigned int length, sample_t* buffer)
+{
+	unsigned int samplesize = AUD_SAMPLE_SIZE(m_specs);
+
+	if(m_input_size)
+	{
+		sample_t* inbuf = m_input_buffer.getBuffer();
+
+		while(length)
+		{
+			unsigned int len = AUD_MIN(m_input_size - m_input_samples, length);
+
+			memcpy(inbuf + m_input_samples * m_specs.channels, buffer, len * samplesize);
+
+			buffer += len * m_specs.channels;
+			m_input_samples += len;
+			m_position += len;
+			length -= len;
+
+			if(m_input_samples == m_input_size)
+			{
+				encode(inbuf);
+
+				m_input_samples = 0;
+			}
+		}
+	}
+	else // PCM data, can write directly!
+	{
+		int samplesize = AUD_SAMPLE_SIZE(m_specs);
+		if(m_output_buffer.getSize() != length * m_specs.channels * m_codecCtx->bits_per_coded_sample / 8)
+			m_output_buffer.resize(length * m_specs.channels * m_codecCtx->bits_per_coded_sample / 8);
+		m_input_buffer.assureSize(length * AUD_MAX(AUD_DEVICE_SAMPLE_SIZE(m_specs), samplesize));
+
+		sample_t* buf = m_input_buffer.getBuffer();
+		m_convert(reinterpret_cast<data_t*>(buf), reinterpret_cast<data_t*>(buffer), length * m_specs.channels);
+
+		encode(buf);
+
+		m_position += length;
+	}
+}

intern/audaspace/ffmpeg/AUD_FFMPEGWriter.h

@@ -0,0 +1,140 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/ffmpeg/AUD_FFMPEGWriter.h
+ *  \ingroup audffmpeg
+ */
+
+
+#ifndef AUD_FFMPEGWRITER
+#define AUD_FFMPEGWRITER
+
+#include "AUD_ConverterFunctions.h"
+#include "AUD_Buffer.h"
+#include "AUD_IWriter.h"
+
+#include <string>
+
+struct AVCodecContext;
+extern "C" {
+#include <libavformat/avformat.h>
+}
+
+/**
+ * This class writes a sound file via ffmpeg.
+ */
+class AUD_FFMPEGWriter : public AUD_IWriter
+{
+private:
+	/**
+	 * The current position in samples.
+	 */
+	int m_position;
+
+	/**
+	 * The specification of the audio data.
+	 */
+	AUD_DeviceSpecs m_specs;
+
+	/**
+	 * The AVFormatContext structure for using ffmpeg.
+	 */
+	AVFormatContext* m_formatCtx;
+
+	/**
+	 * The AVCodecContext structure for using ffmpeg.
+	 */
+	AVCodecContext* m_codecCtx;
+
+	/**
+	 * The AVOutputFormat structure for using ffmpeg.
+	 */
+	AVOutputFormat* m_outputFmt;
+
+	/**
+	 * The AVStream structure for using ffmpeg.
+	 */
+	AVStream* m_stream;
+
+	/**
+	 * The input buffer for the format converted data before encoding.
+	 */
+	AUD_Buffer m_input_buffer;
+
+	/**
+	 * The output buffer for the encoded audio data.
+	 */
+	AUD_Buffer m_output_buffer;
+
+	/**
+	 * The count of input samples we have so far.
+	 */
+	unsigned int m_input_samples;
+
+	/**
+	 * The count of input samples necessary to encode a packet.
+	 */
+	unsigned int m_input_size;
+
+	/**
+	 * Converter function.
+	 */
+	AUD_convert_f m_convert;
+
+	// hide copy constructor and operator=
+	AUD_FFMPEGWriter(const AUD_FFMPEGWriter&);
+	AUD_FFMPEGWriter& operator=(const AUD_FFMPEGWriter&);
+
+	/**
+	 * Encodes to the output buffer.
+	 * \param data Pointer to the data to encode.
+	 */
+	void encode(sample_t* data);
+
+public:
+	/**
+	 * Creates a new writer.
+	 * \param filename The path to the file to be read.
+	 * \param specs The file's audio specification.
+	 * \param format The file's container format.
+	 * \param codec The codec used for encoding the audio data.
+	 * \param bitrate The bitrate for encoding.
+	 * \exception AUD_Exception Thrown if the file specified does not exist or
+	 *            cannot be read with ffmpeg.
+	 */
+	AUD_FFMPEGWriter(std::string filename, AUD_DeviceSpecs specs, AUD_Container format, AUD_Codec codec, unsigned int bitrate);
+
+	/**
+	 * Destroys the writer and closes the file.
+	 */
+	virtual ~AUD_FFMPEGWriter();
+
+	virtual int getPosition() const;
+	virtual AUD_DeviceSpecs getSpecs() const;
+	virtual void write(unsigned int length, sample_t* buffer);
+};
+
+#endif //AUD_FFMPEGWRITER

intern/audaspace/fftw/AUD_BandPassReader.cpp

@@ -71,8 +71,7 @@ void AUD_BandPassReader::read(int & length, sample_t* & buffer)
 
 	if(length > 0)
 	{
-		if(length * AUD_SAMPLE_SIZE(specs) > m_buffer->getSize())
+		m_buffer->assureSize(length * AUD_SAMPLE_SIZE(specs));
-			m_buffer->resize(length * AUD_SAMPLE_SIZE(specs));
 
 		if(length != m_length)
 		{

intern/audaspace/intern/AUD_3DMath.h

@@ -32,9 +32,188 @@
 #ifndef AUD_3DMATH
 #define AUD_3DMATH
 
+#include <cmath>
+#include <cstring>
+
+/**
+ * This class represents a 3 dimensional vector.
+ */
+class AUD_Vector3
+{
+private:
+	/**
+	 * The vector components.
+	 */
+	union
+	{
+		float m_v[3];
+		struct
+		{
+			float m_x;
+			float m_y;
+			float m_z;
+		};
+	};
+
+public:
+	/**
+	 * Creates a new 3 dimensional vector.
+	 * \param x The x component.
+	 * \param y The y component.
+	 * \param z The z component.
+	 */
+	inline AUD_Vector3(float x = 0, float y = 0, float z = 0) :
+		m_x(x), m_y(y), m_z(z)
+	{
+	}
+
+	/**
+	 * Retrieves the x component of the vector.
+	 * \return The x component.
+	 */
+	inline const float& x() const
+	{
+		return m_x;
+	}
+
+	/**
+	 * Retrieves the y component of the vector.
+	 * \return The y component.
+	 */
+	inline const float& y() const
+	{
+		return m_y;
+	}
+
+	/**
+	 * Retrieves the z component of the vector.
+	 * \return The z component.
+	 */
+	inline const float& z() const
+	{
+		return m_z;
+	}
+
+	/**
+	 * Retrieves the components of the vector.
+	 * \param destination Where the 3 float values should be saved to.
+	 */
+	inline void get(float* destination) const
+	{
+		memcpy(destination, m_v, sizeof(m_v));
+	}
+
+	/**
+	 * Retrieves the components of the vector.
+	 * \return The components as float[3].
+	 */
+	inline float* get()
+	{
+		return m_v;
+	}
+
+	/**
+	 * Retrieves the components of the vector.
+	 * \return The components as float[3].
+	 */
+	inline const float* get() const
+	{
+		return m_v;
+	}
+
+	/**
+	 * Retrieves the length of the vector.
+	 * \return The length of the vector.
+	 */
+	inline float length() const
+	{
+		return sqrt(m_x*m_x + m_y*m_y + m_z*m_z);
+	}
+
+	/**
+	 * Retrieves the cross product.
+	 * \param op The second operand.
+	 * \return The cross product of the two vectors.
+	 */
+	inline AUD_Vector3 cross(const AUD_Vector3& op) const
+	{
+		return AUD_Vector3(m_y * op.m_z - m_z * op.m_y,
+						   m_z * op.m_x - m_x * op.m_z,
+						   m_x * op.m_y - m_y * op.m_x);
+	}
+
+	/**
+	 * Retrieves the dot product.
+	 * \param op The second operand.
+	 * \return The dot product of the two vectors.
+	 */
+	inline float operator*(const AUD_Vector3& op) const
+	{
+		return m_x * op.m_x + m_y * op.m_y + m_z * op.m_z;
+	}
+
+	/**
+	 * Retrieves the product with a scalar.
+	 * \param op The second operand.
+	 * \return The scaled vector.
+	 */
+	inline AUD_Vector3 operator*(const float& op) const
+	{
+		return AUD_Vector3(m_x * op, m_y * op, m_z * op);
+	}
+
+	/**
+	 * Adds two vectors.
+	 * \param op The second operand.
+	 * \return The sum vector.
+	 */
+	inline AUD_Vector3 operator+(const AUD_Vector3& op) const
+	{
+		return AUD_Vector3(m_x + op.m_x, m_y + op.m_y, m_z + op.m_z);
+	}
+
+	/**
+	 * Subtracts two vectors.
+	 * \param op The second operand.
+	 * \return The difference vector.
+	 */
+	inline AUD_Vector3 operator-(const AUD_Vector3& op) const
+	{
+		return AUD_Vector3(m_x - op.m_x, m_y - op.m_y, m_z - op.m_z);
+	}
+
+	/**
+	 * Negates the vector.
+	 * \return The vector facing in the opposite direction.
+	 */
+	inline AUD_Vector3 operator-() const
+	{
+		return AUD_Vector3(-m_x, -m_y, -m_z);
+	}
+
+	/**
+	 * Subtracts the second vector.
+	 * \param op The second operand.
+	 * \return The difference vector.
+	 */
+	inline AUD_Vector3& operator-=(const AUD_Vector3& op)
+	{
+		m_x -= op.m_x;
+		m_y -= op.m_y;
+		m_z -= op.m_z;
+		return *this;
+	}
+};
+
+/**
+ * This class represents a quaternion used for 3D rotations.
+ */
 class AUD_Quaternion
 {
 private:
+	/**
+	 * The quaternion components.
+	 */
 	union
 	{
 		float m_v[4];
@@ -55,7 +234,7 @@ public:
 	 * \param y The y component.
 	 * \param z The z component.
 	 */
-	inline AUD_Quaternion(float w, float x, float y, float z) :
+	inline AUD_Quaternion(float w = 1, float x = 0, float y = 0, float z = 0) :
 		m_w(w), m_x(x), m_y(y), m_z(z)
 	{
 	}
@@ -102,10 +281,16 @@ public:
 	 */
 	inline void get(float* destination) const
 	{
-		destination[0] = m_w;
+		memcpy(destination, m_v, sizeof(m_v));
-		destination[1] = m_x;
+	}
-		destination[2] = m_y;
+
-		destination[3] = m_z;
+	/**
+	 * Retrieves the components of the vector.
+	 * \return The components as float[4].
+	 */
+	inline float* get()
+	{
+		return m_v;
 	}
 
 	/**
@@ -116,79 +301,29 @@ public:
 	{
 		return m_v;
 	}
-};
 
-class AUD_Vector3
-{
-private:
-	union
-	{
-		float m_v[3];
-		struct
-		{
-			float m_x;
-			float m_y;
-			float m_z;
-		};
-	};
-
-public:
 	/**
-	 * Creates a new 3 dimensional vector.
+	 * When the quaternion represents an orientation, this returns the negative
-	 * \param x The x component.
+	 * z axis vector.
-	 * \param y The y component.
+	 * \return The negative z axis vector.
-	 * \param z The z component.
 	 */
-	inline AUD_Vector3(float x, float y, float z) :
+	inline AUD_Vector3 getLookAt() const
-		m_x(x), m_y(y), m_z(z)
 	{
+		return AUD_Vector3(-2 * (m_w * m_y + m_x * m_z),
+							2 * (m_x * m_w - m_z * m_y),
+							2 * (m_x * m_x + m_y * m_y) - 1);
 	}
 
 	/**
-	 * Retrieves the x component of the vector.
+	 * When the quaternion represents an orientation, this returns the y axis
-	 * \return The x component.
+	 * vector.
+	 * \return The y axis vector.
 	 */
-	inline const float& x() const
+	inline AUD_Vector3 getUp() const
 	{
-		return m_x;
+		return AUD_Vector3(2 * (m_x * m_y - m_w * m_z),
-	}
+							1 - 2 * (m_x * m_x + m_z * m_z),
-
+							2 * (m_w * m_x + m_y * m_z));
-	/**
-	 * Retrieves the y component of the vector.
-	 * \return The y component.
-	 */
-	inline const float& y() const
-	{
-		return m_y;
-	}
-
-	/**
-	 * Retrieves the z component of the vector.
-	 * \return The z component.
-	 */
-	inline const float& z() const
-	{
-		return m_z;
-	}
-
-	/**
-	 * Retrieves the components of the vector.
-	 * \param destination Where the 3 float values should be saved to.
-	 */
-	inline void get(float* destination) const
-	{
-		destination[0] = m_x;
-		destination[1] = m_y;
-		destination[2] = m_z;
-	}
-
-	/**
-	 * Retrieves the components of the vector.
-	 * \return The components as float[3].
-	 */
-	inline const float* get() const
-	{
-		return m_v;
 	}
 };
 

intern/audaspace/intern/AUD_AnimateableProperty.cpp

@@ -0,0 +1,159 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/intern/AUD_AnimateableProperty.cpp
+ *  \ingroup audaspaceintern
+ */
+
+
+#include "AUD_AnimateableProperty.h"
+
+#include <cstring>
+#include <cmath>
+
+AUD_AnimateableProperty::AUD_AnimateableProperty(int count) :
+	AUD_Buffer(count * sizeof(float)), m_count(count), m_isAnimated(false)
+{
+	memset(getBuffer(), 0, count * sizeof(float));
+
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+
+	pthread_mutex_init(&m_mutex, &attr);
+
+	pthread_mutexattr_destroy(&attr);
+}
+
+AUD_AnimateableProperty::~AUD_AnimateableProperty()
+{
+	pthread_mutex_destroy(&m_mutex);
+}
+
+void AUD_AnimateableProperty::lock()
+{
+	pthread_mutex_lock(&m_mutex);
+}
+
+void AUD_AnimateableProperty::unlock()
+{
+	pthread_mutex_unlock(&m_mutex);
+}
+
+void AUD_AnimateableProperty::write(const float* data)
+{
+	lock();
+
+	m_isAnimated = false;
+	memcpy(getBuffer(), data, m_count * sizeof(float));
+
+	unlock();
+}
+
+void AUD_AnimateableProperty::write(const float* data, int position, int count)
+{
+	lock();
+
+	m_isAnimated = true;
+
+	int pos = getSize() / (sizeof(float) * m_count);
+
+	assureSize((count + position) * m_count * sizeof(float), true);
+
+	float* buf = getBuffer();
+
+	memcpy(buf + position * m_count, data, count * m_count * sizeof(float));
+
+	for(int i = pos; i < position; i++)
+		memcpy(buf + i * m_count, buf + (pos - 1) * m_count, m_count * sizeof(float));
+
+	unlock();
+}
+
+void AUD_AnimateableProperty::read(float position, float* out)
+{
+	lock();
+
+	if(!m_isAnimated)
+	{
+		memcpy(out, getBuffer(), m_count * sizeof(float));
+		unlock();
+		return;
+	}
+
+	int last = getSize() / (sizeof(float) * m_count) - 1;
+	float t = position - floor(position);
+
+	if(position >= last)
+	{
+		position = last;
+		t = 0;
+	}
+
+	if(t == 0)
+	{
+		memcpy(out, getBuffer() + int(floor(position)) * m_count, m_count * sizeof(float));
+	}
+	else
+	{
+		int pos = int(floor(position)) * m_count;
+		float t2 = t * t;
+		float t3 = t2 * t;
+		float m0, m1;
+		float* p0;
+		float* p1 = getBuffer() + pos;
+		float* p2;
+		float* p3;
+		last *= m_count;
+
+		if(pos == 0)
+			p0 = p1;
+		else
+			p0 = p1 - m_count;
+
+		p2 = p1 + m_count;
+		if(pos + m_count == last)
+			p3 = p2;
+		else
+			p3 = p2 + m_count;
+
+		for(int i = 0; i < m_count; i++)
+		{
+			m0 = (p2[i] - p0[i]) / 2.0f;
+			m1 = (p3[i] - p1[i]) / 2.0f;
+
+			out[i] = (2 * t3 - 3 * t2 + 1) * p0[i] + (-2 * t3 + 3 * t2) * p1[i] +
+					 (t3 - 2 * t2 + t) * m0 + (t3 - t2) * m1;
+		}
+	}
+
+	unlock();
+}
+
+bool AUD_AnimateableProperty::isAnimated() const
+{
+	return m_isAnimated;
+}

intern/audaspace/intern/AUD_AnimateableProperty.h

@@ -0,0 +1,108 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/intern/AUD_AnimateableProperty.h
+ *  \ingroup audaspaceintern
+ */
+
+
+#ifndef AUD_ANIMATEABLEPROPERTY
+#define AUD_ANIMATEABLEPROPERTY
+
+#include "AUD_Buffer.h"
+
+#include <pthread.h>
+
+/**
+ * This class saves animation data for float properties.
+ */
+class AUD_AnimateableProperty : private AUD_Buffer
+{
+private:
+	/// The count of floats for a single property.
+	const int m_count;
+
+	/// Whether the property is animated or not.
+	bool m_isAnimated;
+
+	/// The mutex for locking.
+	pthread_mutex_t m_mutex;
+
+	// hide copy constructor and operator=
+	AUD_AnimateableProperty(const AUD_AnimateableProperty&);
+	AUD_AnimateableProperty& operator=(const AUD_AnimateableProperty&);
+
+public:
+	/**
+	 * Creates a new animateable property.
+	 * \param count The count of floats for a single property.
+	 */
+	AUD_AnimateableProperty(int count = 1);
+
+	/**
+	 * Destroys the animateable property.
+	 */
+	~AUD_AnimateableProperty();
+
+	/**
+	 * Locks the property.
+	 */
+	void lock();
+
+	/**
+	 * Unlocks the previously locked property.
+	 */
+	void unlock();
+
+	/**
+	 * Writes the properties value and marks it non-animated.
+	 * \param data The new value.
+	 */
+	void write(const float* data);
+
+	/**
+	 * Writes the properties value and marks it animated.
+	 * \param data The new value.
+	 * \param position The position in the animation in frames.
+	 * \param count The count of frames to write.
+	 */
+	void write(const float* data, int position, int count);
+
+	/**
+	 * Reads the properties value.
+	 * \param position The position in the animation in frames.
+	 * \param[out] out Where to write the value to.
+	 */
+	void read(float position, float* out);
+
+	/**
+	 * Returns whether the property is animated.
+	 * \return Whether the property is animated.
+	 */
+	bool isAnimated() const;
+};
+
+#endif //AUD_ANIMATEABLEPROPERTY

intern/audaspace/intern/AUD_Buffer.cpp

@@ -74,3 +74,9 @@ void AUD_Buffer::resize(int size, bool keep)
 
 	m_size = size;
 }
+
+void AUD_Buffer::assureSize(int size, bool keep)
+{
+	if(m_size < size)
+		resize(size, keep);
+}

intern/audaspace/intern/AUD_Buffer.h

@@ -80,6 +80,16 @@ public:
 	 *        the data at the end will be lost.
 	 */
 	void resize(int size, bool keep = false);
+
+	/**
+	 * Makes sure the buffer has a minimum size.
+	 * If size is >= current size, nothing will happen.
+	 * Otherwise the buffer is resized with keep as parameter.
+	 * \param size The new minimum size of the buffer, measured in bytes.
+	 * \param keep Whether to keep the old data. If the new buffer is smaller,
+	 *        the data at the end will be lost.
+	 */
+	void assureSize(int size, bool keep = false);
 };
 
 #endif //AUD_BUFFER

intern/audaspace/intern/AUD_BufferReader.cpp

@@ -33,6 +33,8 @@
 #include "AUD_Buffer.h"
 #include "AUD_Space.h"
 
+#include <cstring>
+
 AUD_BufferReader::AUD_BufferReader(AUD_Reference<AUD_Buffer> buffer,
 								   AUD_Specs specs) :
 	m_position(0), m_buffer(buffer), m_specs(specs)
@@ -51,7 +53,7 @@ void AUD_BufferReader::seek(int position)
 
 int AUD_BufferReader::getLength() const
 {
-	return m_buffer.get()->getSize() / AUD_SAMPLE_SIZE(m_specs);
+	return m_buffer->getSize() / AUD_SAMPLE_SIZE(m_specs);
 }
 
 int AUD_BufferReader::getPosition() const
@@ -64,17 +66,27 @@ AUD_Specs AUD_BufferReader::getSpecs() const
 	return m_specs;
 }
 
-void AUD_BufferReader::read(int & length, sample_t* & buffer)
+void AUD_BufferReader::read(int& length, bool& eos, sample_t* buffer)
 {
+	eos = false;
+
 	int sample_size = AUD_SAMPLE_SIZE(m_specs);
 
-	buffer = m_buffer.get()->getBuffer() + m_position * m_specs.channels;
+	sample_t* buf = m_buffer->getBuffer() + m_position * m_specs.channels;
 
 	// in case the end of the buffer is reached
-	if(m_buffer.get()->getSize() < (m_position + length) * sample_size)
+	if(m_buffer->getSize() < (m_position + length) * sample_size)
-		length = m_buffer.get()->getSize() / sample_size - m_position;
+	{
+		length = m_buffer->getSize() / sample_size - m_position;
+		eos = true;
+	}
 
 	if(length < 0)
+	{
 		length = 0;
-	m_position += length;
+		return;
+	}
+
+	m_position += length;
+	memcpy(buffer, buf, length * sample_size);
 }

intern/audaspace/intern/AUD_BufferReader.h

@@ -76,7 +76,7 @@ public:
 	virtual int getLength() const;
 	virtual int getPosition() const;
 	virtual AUD_Specs getSpecs() const;
-	virtual void read(int & length, sample_t* & buffer);
+	virtual void read(int& length, bool& eos, sample_t* buffer);
 };
 
 #endif //AUD_BUFFERREADER

intern/audaspace/intern/AUD_C-API.h

@@ -31,12 +31,17 @@
 #ifndef AUD_CAPI
 #define AUD_CAPI
 
+#ifdef WITH_PYTHON
+#include "Python.h"
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include "AUD_Space.h"
 
+/// Supported output devices.
 typedef enum
 {
 	AUD_NULL_DEVICE = 0,
@@ -45,6 +50,7 @@ typedef enum
 	AUD_JACK_DEVICE
 } AUD_DeviceType;
 
+/// Sound information structure.
 typedef struct
 {
 	AUD_Specs specs;
@@ -53,9 +59,9 @@ typedef struct
 
 #ifndef AUD_CAPI_IMPLEMENTATION
 	typedef void AUD_Sound;
-	typedef void AUD_Channel;
+	typedef void AUD_Handle;
 	typedef void AUD_Device;
-	typedef void AUD_SequencerEntry;
+	typedef void AUD_SEntry;
 	typedef float (*AUD_volumeFunction)(void*, void*, float);
 	typedef void (*AUD_syncFunction)(void*, int, float);
 #endif
@@ -118,6 +124,13 @@ extern AUD_Sound* AUD_loadBuffer(unsigned char* buffer, int size);
  */
 extern AUD_Sound* AUD_bufferSound(AUD_Sound* sound);
 
+/**
+ * Rechannels the sound to be mono.
+ * \param sound The sound to rechannel.
+ * \return The mono sound.
+ */
+extern AUD_Sound* AUD_monoSound(AUD_Sound* sound);
+
 /**
  * Delays a sound.
  * \param sound The sound to dealy.
@@ -155,7 +168,7 @@ extern AUD_Sound* AUD_loopSound(AUD_Sound* sound);
  * \param loops The count of remaining loops, -1 for infinity.
  * \return Whether the handle is valid.
  */
-extern int AUD_setLoop(AUD_Channel* handle, int loops);
+extern int AUD_setLoop(AUD_Handle* handle, int loops);
 
 /**
  * Rectifies a sound.
@@ -177,28 +190,28 @@ extern void AUD_unload(AUD_Sound* sound);
  *             paused when its end has been reached.
  * \return A handle to the played back sound.
  */
-extern AUD_Channel* AUD_play(AUD_Sound* sound, int keep);
+extern AUD_Handle* AUD_play(AUD_Sound* sound, int keep);
 
 /**
  * Pauses a played back sound.
  * \param handle The handle to the sound.
  * \return Whether the handle has been playing or not.
  */
-extern int AUD_pause(AUD_Channel* handle);
+extern int AUD_pause(AUD_Handle* handle);
 
 /**
  * Resumes a paused sound.
  * \param handle The handle to the sound.
  * \return Whether the handle has been paused or not.
  */
-extern int AUD_resume(AUD_Channel* handle);
+extern int AUD_resume(AUD_Handle* handle);
 
 /**
  * Stops a playing or paused sound.
  * \param handle The handle to the sound.
  * \return Whether the handle has been valid or not.
  */
-extern int AUD_stop(AUD_Channel* handle);
+extern int AUD_stop(AUD_Handle* handle);
 
 /**
  * Sets the end behaviour of a playing or paused sound.
@@ -207,7 +220,7 @@ extern int AUD_stop(AUD_Channel* handle);
  *             paused when its end has been reached.
  * \return Whether the handle has been valid or not.
  */
-extern int AUD_setKeep(AUD_Channel* handle, int keep);
+extern int AUD_setKeep(AUD_Handle* handle, int keep);
 
 /**
  * Seeks a playing or paused sound.
@@ -215,7 +228,7 @@ extern int AUD_setKeep(AUD_Channel* handle, int keep);
  * \param seekTo From where the sound file should be played back in seconds.
  * \return Whether the handle has been valid or not.
  */
-extern int AUD_seek(AUD_Channel* handle, float seekTo);
+extern int AUD_seek(AUD_Handle* handle, float seekTo);
 
 /**
  * Retrieves the playback position of a handle.
@@ -223,14 +236,14 @@ extern int AUD_seek(AUD_Channel* handle, float seekTo);
  * \return The current playback position in seconds or 0.0 if the handle is
  *         invalid.
  */
-extern float AUD_getPosition(AUD_Channel* handle);
+extern float AUD_getPosition(AUD_Handle* handle);
 
 /**
  * Returns the status of a playing, paused or stopped sound.
  * \param handle The handle to the sound.
  * \return The status of the sound behind the handle.
  */
-extern AUD_Status AUD_getStatus(AUD_Channel* handle);
+extern AUD_Status AUD_getStatus(AUD_Handle* handle);
 
 /**
  * Sets the listener location.
@@ -277,7 +290,7 @@ extern int AUD_setDistanceModel(AUD_DistanceModel model);
  * \param location The new location.
  * \return Whether the action succeeded.
  */
-extern int AUD_setSourceLocation(AUD_Channel* handle, const float* location);
+extern int AUD_setSourceLocation(AUD_Handle* handle, const float* location);
 
 /**
  * Sets the velocity of a source.
@@ -285,7 +298,7 @@ extern int AUD_setSourceLocation(AUD_Channel* handle, const float* location);
  * \param velocity The new velocity.
  * \return Whether the action succeeded.
  */
-extern int AUD_setSourceVelocity(AUD_Channel* handle, const float* velocity);
+extern int AUD_setSourceVelocity(AUD_Handle* handle, const float* velocity);
 
 /**
  * Sets the orientation of a source.
@@ -293,7 +306,7 @@ extern int AUD_setSourceVelocity(AUD_Channel* handle, const float* velocity);
  * \param orientation The new orientation as quaternion.
  * \return Whether the action succeeded.
  */
-extern int AUD_setSourceOrientation(AUD_Channel* handle, const float* orientation);
+extern int AUD_setSourceOrientation(AUD_Handle* handle, const float* orientation);
 
 /**
  * Sets whether the source location, velocity and orientation are relative
@@ -302,7 +315,7 @@ extern int AUD_setSourceOrientation(AUD_Channel* handle, const float* orientatio
  * \param relative Whether the source is relative.
  * \return Whether the action succeeded.
  */
-extern int AUD_setRelative(AUD_Channel* handle, int relative);
+extern int AUD_setRelative(AUD_Handle* handle, int relative);
 
 /**
  * Sets the maximum volume of a source.
@@ -310,7 +323,7 @@ extern int AUD_setRelative(AUD_Channel* handle, int relative);
  * \param volume The new maximum volume.
  * \return Whether the action succeeded.
  */
-extern int AUD_setVolumeMaximum(AUD_Channel* handle, float volume);
+extern int AUD_setVolumeMaximum(AUD_Handle* handle, float volume);
 
 /**
  * Sets the minimum volume of a source.
@@ -318,7 +331,7 @@ extern int AUD_setVolumeMaximum(AUD_Channel* handle, float volume);
  * \param volume The new minimum volume.
  * \return Whether the action succeeded.
  */
-extern int AUD_setVolumeMinimum(AUD_Channel* handle, float volume);
+extern int AUD_setVolumeMinimum(AUD_Handle* handle, float volume);
 
 /**
  * Sets the maximum distance of a source.
@@ -328,7 +341,7 @@ extern int AUD_setVolumeMinimum(AUD_Channel* handle, float volume);
  * \param distance The new maximum distance.
  * \return Whether the action succeeded.
  */
-extern int AUD_setDistanceMaximum(AUD_Channel* handle, float distance);
+extern int AUD_setDistanceMaximum(AUD_Handle* handle, float distance);
 
 /**
  * Sets the reference distance of a source.
@@ -336,7 +349,7 @@ extern int AUD_setDistanceMaximum(AUD_Channel* handle, float distance);
  * \param distance The new reference distance.
  * \return Whether the action succeeded.
  */
-extern int AUD_setDistanceReference(AUD_Channel* handle, float distance);
+extern int AUD_setDistanceReference(AUD_Handle* handle, float distance);
 
 /**
  * Sets the attenuation of a source.
@@ -345,7 +358,7 @@ extern int AUD_setDistanceReference(AUD_Channel* handle, float distance);
  * \param factor The new attenuation.
  * \return Whether the action succeeded.
  */
-extern int AUD_setAttenuation(AUD_Channel* handle, float factor);
+extern int AUD_setAttenuation(AUD_Handle* handle, float factor);
 
 /**
  * Sets the outer angle of the cone of a source.
@@ -353,7 +366,7 @@ extern int AUD_setAttenuation(AUD_Channel* handle, float factor);
  * \param angle The new outer angle of the cone.
  * \return Whether the action succeeded.
  */
-extern int AUD_setConeAngleOuter(AUD_Channel* handle, float angle);
+extern int AUD_setConeAngleOuter(AUD_Handle* handle, float angle);
 
 /**
  * Sets the inner angle of the cone of a source.
@@ -361,7 +374,7 @@ extern int AUD_setConeAngleOuter(AUD_Channel* handle, float angle);
  * \param angle The new inner angle of the cone.
  * \return Whether the action succeeded.
  */
-extern int AUD_setConeAngleInner(AUD_Channel* handle, float angle);
+extern int AUD_setConeAngleInner(AUD_Handle* handle, float angle);
 
 /**
  * Sets the outer volume of the cone of a source.
@@ -371,7 +384,7 @@ extern int AUD_setConeAngleInner(AUD_Channel* handle, float angle);
  * \param volume The new outer volume of the cone.
  * \return Whether the action succeeded.
  */
-extern int AUD_setConeVolumeOuter(AUD_Channel* handle, float volume);
+extern int AUD_setConeVolumeOuter(AUD_Handle* handle, float volume);
 
 /**
  * Sets the volume of a played back sound.
@@ -379,7 +392,7 @@ extern int AUD_setConeVolumeOuter(AUD_Channel* handle, float volume);
  * \param volume The new volume, must be between 0.0 and 1.0.
  * \return Whether the action succeeded.
  */
-extern int AUD_setSoundVolume(AUD_Channel* handle, float volume);
+extern int AUD_setSoundVolume(AUD_Handle* handle, float volume);
 
 /**
  * Sets the pitch of a played back sound.
@@ -387,7 +400,7 @@ extern int AUD_setSoundVolume(AUD_Channel* handle, float volume);
  * \param pitch The new pitch.
  * \return Whether the action succeeded.
  */
-extern int AUD_setSoundPitch(AUD_Channel* handle, float pitch);
+extern int AUD_setSoundPitch(AUD_Handle* handle, float pitch);
 
 /**
  * Opens a read device, with which audio data can be read.
@@ -411,18 +424,7 @@ extern int AUD_setDeviceVolume(AUD_Device* device, float volume);
  * \param seek The position where the sound should be seeked to.
  * \return A handle to the played back sound.
  */
-extern AUD_Channel* AUD_playDevice(AUD_Device* device, AUD_Sound* sound, float seek);
+extern AUD_Handle* AUD_playDevice(AUD_Device* device, AUD_Sound* sound, float seek);
-
-/**
- * Sets the volume of a played back sound of a read device.
- * \param device The read device.
- * \param handle The handle to the sound.
- * \param volume The new volume, must be between 0.0 and 1.0.
- * \return Whether the action succeeded.
- */
-extern int AUD_setDeviceSoundVolume(AUD_Device* device,
-									AUD_Channel* handle,
-									float volume);
 
 /**
  * Reads the next samples into the supplied buffer.
@@ -448,7 +450,7 @@ extern void AUD_closeReadDevice(AUD_Device* device);
 extern float* AUD_readSoundBuffer(const char* filename, float low, float high,
 								  float attack, float release, float threshold,
 								  int accumulate, int additive, int square,
-								  float sthreshold, int samplerate,
+								  float sthreshold, double samplerate,
 								  int* length);
 
 /**
@@ -457,43 +459,302 @@ extern float* AUD_readSoundBuffer(const char* filename, float low, float high,
  * \param time The time in seconds.
  * \return The silence handle.
  */
-extern AUD_Channel* AUD_pauseAfter(AUD_Channel* handle, float seconds);
+extern AUD_Handle* AUD_pauseAfter(AUD_Handle* handle, float seconds);
 
-extern AUD_Sound* AUD_createSequencer(int muted, void* data, AUD_volumeFunction volume);
+/**
+ * Creates a new sequenced sound scene.
+ * \param fps The FPS of the scene.
+ * \param muted Whether the scene is muted.
+ * \return The new sound scene.
+ */
+extern AUD_Sound* AUD_createSequencer(float fps, int muted);
 
+/**
+ * Deletes a sound scene.
+ * \param sequencer The sound scene.
+ */
 extern void AUD_destroySequencer(AUD_Sound* sequencer);
 
+/**
+ * Sets the muting state of the scene.
+ * \param sequencer The sound scene.
+ * \param muted Whether the scene is muted.
+ */
 extern void AUD_setSequencerMuted(AUD_Sound* sequencer, int muted);
 
-extern AUD_SequencerEntry* AUD_addSequencer(AUD_Sound** sequencer, AUD_Sound* sound,
+/**
-										float begin, float end, float skip, void* data);
+ * Sets the scene's FPS.
+ * \param sequencer The sound scene.
+ * \param fps The new FPS.
+ */
+extern void AUD_setSequencerFPS(AUD_Sound* sequencer, float fps);
 
-extern void AUD_removeSequencer(AUD_Sound* sequencer, AUD_SequencerEntry* entry);
+/**
-
+ * Adds a new entry to the scene.
-extern void AUD_moveSequencer(AUD_Sound* sequencer, AUD_SequencerEntry* entry,
+ * \param sequencer The sound scene.
+ * \param sound The sound this entry should play.
+ * \param begin The start time.
+ * \param end The end time or a negative value if determined by the sound.
+ * \param skip How much seconds should be skipped at the beginning.
+ * \return The entry added.
+ */
+extern AUD_SEntry* AUD_addSequence(AUD_Sound* sequencer, AUD_Sound* sound,
 								   float begin, float end, float skip);
 
-extern void AUD_muteSequencer(AUD_Sound* sequencer, AUD_SequencerEntry* entry,
+/**
-						  char mute);
+ * Removes an entry from the scene.
+ * \param sequencer The sound scene.
+ * \param entry The entry to remove.
+ */
+extern void AUD_removeSequence(AUD_Sound* sequencer, AUD_SEntry* entry);
 
-extern int AUD_readSound(AUD_Sound* sound, sample_t* buffer, int length);
+/**
+ * Moves the entry.
+ * \param entry The sequenced entry.
+ * \param begin The new start time.
+ * \param end The new end time or a negative value if unknown.
+ * \param skip How many seconds to skip at the beginning.
+ */
+extern void AUD_moveSequence(AUD_SEntry* entry, float begin, float end, float skip);
 
+/**
+ * Sets the muting state of the entry.
+ * \param entry The sequenced entry.
+ * \param mute Whether the entry should be muted or not.
+ */
+extern void AUD_muteSequence(AUD_SEntry* entry, char mute);
+
+/**
+ * Sets whether the entrie's location, velocity and orientation are relative
+ * to the listener.
+ * \param entry The sequenced entry.
+ * \param relative Whether the source is relative.
+ * \return Whether the action succeeded.
+ */
+extern void AUD_setRelativeSequence(AUD_SEntry* entry, char relative);
+
+/**
+ * Sets the sound of the entry.
+ * \param entry The sequenced entry.
+ * \param sound The new sound.
+ */
+extern void AUD_updateSequenceSound(AUD_SEntry* entry, AUD_Sound* sound);
+
+/**
+ * Writes animation data to a sequenced entry.
+ * \param entry The sequenced entry.
+ * \param type The type of animation data.
+ * \param frame The frame this data is for.
+ * \param data The data to write.
+ * \param animated Whether the attribute is animated.
+ */
+extern void AUD_setSequenceAnimData(AUD_SEntry* entry, AUD_AnimateablePropertyType type, int frame, float* data, char animated);
+
+/**
+ * Writes animation data to a sequenced entry.
+ * \param sequencer The sound scene.
+ * \param type The type of animation data.
+ * \param frame The frame this data is for.
+ * \param data The data to write.
+ * \param animated Whether the attribute is animated.
+ */
+extern void AUD_setSequencerAnimData(AUD_Sound* sequencer, AUD_AnimateablePropertyType type, int frame, float* data, char animated);
+
+/**
+ * Updates all non-animated parameters of the entry.
+ * \param entry The sequenced entry.
+ * \param volume_max The maximum volume.
+ * \param volume_min The minimum volume.
+ * \param distance_max The maximum distance.
+ * \param distance_reference The reference distance.
+ * \param attenuation The attenuation.
+ * \param cone_angle_outer The outer cone opening angle.
+ * \param cone_angle_inner The inner cone opening angle.
+ * \param cone_volume_outer The volume outside the outer cone.
+ */
+extern void AUD_updateSequenceData(AUD_SEntry* entry, float volume_max, float volume_min,
+								   float distance_max, float distance_reference, float attenuation,
+								   float cone_angle_outer, float cone_angle_inner, float cone_volume_outer);
+
+/**
+ * Updates all non-animated parameters of the entry.
+ * \param sequencer The sound scene.
+ * \param speed_of_sound The speed of sound for doppler calculation.
+ * \param factor The doppler factor to control the effect's strength.
+ * \param model The distance model for distance calculation.
+ */
+extern void AUD_updateSequencerData(AUD_Sound* sequencer, float speed_of_sound,
+									float factor, AUD_DistanceModel model);
+
+/**
+ * Sets the audio output specification of the sound scene to the specs of the
+ * current playback device.
+ * \param sequencer The sound scene.
+ */
+extern void AUD_setSequencerDeviceSpecs(AUD_Sound* sequencer);
+
+/**
+ * Sets the audio output specification of the sound scene.
+ * \param sequencer The sound scene.
+ * \param specs The new specification.
+ */
+extern void AUD_setSequencerSpecs(AUD_Sound* sequencer, AUD_Specs specs);
+
+/**
+ * Seeks sequenced sound scene playback.
+ * \param handle Playback handle.
+ * \param time Time in seconds to seek to.
+ */
+extern void AUD_seekSequencer(AUD_Handle* handle, float time);
+
+/**
+ * Returns the current sound scene playback time.
+ * \param handle Playback handle.
+ * \return The playback time in seconds.
+ */
+extern float AUD_getSequencerPosition(AUD_Handle* handle);
+
+/**
+ * Starts the playback of jack transport if possible.
+ */
 extern void AUD_startPlayback(void);
 
+/**
+ * Stops the playback of jack transport if possible.
+ */
 extern void AUD_stopPlayback(void);
 
-extern void AUD_seekSequencer(AUD_Channel* handle, float time);
-
-extern float AUD_getSequencerPosition(AUD_Channel* handle);
-
 #ifdef WITH_JACK
+/**
+ * Sets the sync callback for jack transport.
+ * \param function The callback function.
+ * \param data The data parameter for the callback.
+ */
 extern void AUD_setSyncCallback(AUD_syncFunction function, void* data);
 #endif
 
+/**
+ * Returns whether jack transport is currently playing.
+ * \return Whether jack transport is currently playing.
+ */
 extern int AUD_doesPlayback(void);
 
+/**
+ * Reads a sound into a buffer for drawing at a specific sampling rate.
+ * \param sound The sound to read.
+ * \param buffer The buffer to write to. Must have a size of 3*4*length.
+ * \param length How many samples to read from the sound.
+ * \param samples_per_second How many samples to read per second of the sound.
+ * \return How many samples really have been read. Always <= length.
+ */
+extern int AUD_readSound(AUD_Sound* sound, sample_t* buffer, int length, int samples_per_second);
+
+/**
+ * Copies a sound.
+ * \param sound Sound to copy.
+ * \return Copied sound.
+ */
+extern AUD_Sound* AUD_copy(AUD_Sound* sound);
+
+/**
+ * Frees a handle.
+ * \param channel Handle to free.
+ */
+extern void AUD_freeHandle(AUD_Handle* channel);
+
+/**
+ * Creates a new set.
+ * \return The new set.
+ */
+extern void* AUD_createSet(void);
+
+/**
+ * Deletes a set.
+ * \param set The set to delete.
+ */
+extern void AUD_destroySet(void* set);
+
+/**
+ * Removes an entry from a set.
+ * \param set The set work on.
+ * \param entry The entry to remove.
+ * \return Whether the entry was in the set or not.
+ */
+extern char AUD_removeSet(void* set, void* entry);
+
+/**
+ * Adds a new entry to a set.
+ * \param set The set work on.
+ * \param entry The entry to add.
+ */
+extern void AUD_addSet(void* set, void* entry);
+
+/**
+ * Removes one entry from a set and returns it.
+ * \param set The set work on.
+ * \return The entry or NULL if the set is empty.
+ */
+extern void* AUD_getSet(void* set);
+
+/**
+ * Mixes a sound down into a file.
+ * \param sound The sound scene to mix down.
+ * \param start The start frame.
+ * \param length The count of frames to write.
+ * \param buffersize How many samples should be written at once.
+ * \param filename The file to write to.
+ * \param specs The file's audio specification.
+ * \param format The file's container format.
+ * \param codec The codec used for encoding the audio data.
+ * \param bitrate The bitrate for encoding.
+ * \return An error message or NULL in case of success.
+ */
+extern const char* AUD_mixdown(AUD_Sound* sound, unsigned int start, unsigned int length, unsigned int buffersize, const char* filename, AUD_DeviceSpecs specs, AUD_Container format, AUD_Codec codec, unsigned int bitrate);
+
+/**
+ * Opens a read device and prepares it for mixdown of the sound scene.
+ * \param specs Output audio specifications.
+ * \param sequencer The sound scene to mix down.
+ * \param volume The overall mixdown volume.
+ * \param start The start time of the mixdown in the sound scene.
+ * \return The read device for the mixdown.
+ */
+extern AUD_Device* AUD_openMixdownDevice(AUD_DeviceSpecs specs, AUD_Sound* sequencer, float volume, float start);
+
+#ifdef WITH_PYTHON
+/**
+ * Retrieves the python factory of a sound.
+ * \param sound The sound factory.
+ * \return The python factory.
+ */
+extern PyObject* AUD_getPythonFactory(AUD_Sound* sound);
+
+/**
+ * Retrieves the sound factory of a python factory.
+ * \param sound The python factory.
+ * \return The sound factory.
+ */
+extern AUD_Sound* AUD_getPythonSound(PyObject* sound);
+#endif
+
 #ifdef __cplusplus
 }
+
+#include "AUD_Reference.h"
+class AUD_IDevice;
+class AUD_I3DDevice;
+
+/**
+ * Returns the current playback device.
+ * \return The playback device.
+ */
+AUD_Reference<AUD_IDevice> AUD_getDevice();
+
+/**
+ * Returns the current playback 3D device.
+ * \return The playback 3D device.
+ */
+AUD_I3DDevice* AUD_get3DDevice();
 #endif
 
 #endif //AUD_CAPI