1 files changed, 151 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio/AudioUnits/AUPublic/AUBase/AUInputElement.cpp b/libs/appleutility/CoreAudio/AudioUnits/AUPublic/AUBase/AUInputElement.cpp
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index 0000000000..2e148e8ba7
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+++ b/libs/appleutility/CoreAudio/AudioUnits/AUPublic/AUBase/AUInputElement.cpp
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+/*
+     File: AUInputElement.cpp
+ Abstract: AUInputElement.h
+  Version: 1.1
+ 
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
+ Inc. ("Apple") in consideration of your agreement to the following
+ terms, and your use, installation, modification or redistribution of
+ this Apple software constitutes acceptance of these terms.  If you do
+ not agree with these terms, please do not use, install, modify or
+ redistribute this Apple software.
+ 
+ In consideration of your agreement to abide by the following terms, and
+ subject to these terms, Apple grants you a personal, non-exclusive
+ license, under Apple's copyrights in this original Apple software (the
+ "Apple Software"), to use, reproduce, modify and redistribute the Apple
+ Software, with or without modifications, in source and/or binary forms;
+ provided that if you redistribute the Apple Software in its entirety and
+ without modifications, you must retain this notice and the following
+ text and disclaimers in all such redistributions of the Apple Software.
+ Neither the name, trademarks, service marks or logos of Apple Inc. may
+ be used to endorse or promote products derived from the Apple Software
+ without specific prior written permission from Apple.  Except as
+ expressly stated in this notice, no other rights or licenses, express or
+ implied, are granted by Apple herein, including but not limited to any
+ patent rights that may be infringed by your derivative works or by other
+ works in which the Apple Software may be incorporated.
+ 
+ The Apple Software is provided by Apple on an "AS IS" basis.  APPLE
+ MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+ THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+ FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+ OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+ 
+ IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+ MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+ AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+ STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+ 
+ Copyright (C) 2014 Apple Inc. All Rights Reserved.
+ 
+*/
+#include "AUBase.h"
+
+inline bool	HasGoodBufferPointers(const AudioBufferList &abl, UInt32 nBytes)
+{
+	const AudioBuffer *buf = abl.mBuffers;
+	for (UInt32 i = abl.mNumberBuffers; i--;++buf) {
+		if (buf->mData == NULL || buf->mDataByteSize < nBytes)
+			return false;
+	}
+	return true;
+}
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	AUInputElement::AUInputElement
+//
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+AUInputElement::AUInputElement(AUBase *audioUnit) :
+	AUIOElement(audioUnit),
+	mInputType(kNoInput)
+{
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	AUInputElement::SetConnection
+//
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+void	AUInputElement::SetConnection(const AudioUnitConnection &conn)
+{
+	if (conn.sourceAudioUnit == 0) {
+		Disconnect();
+		return;
+	}	
+	
+	mInputType = kFromConnection;
+	mConnection = conn;
+	AllocateBuffer();
+
+	mConnInstanceStorage = NULL;
+
+#if !CA_USE_AUDIO_PLUGIN_ONLY
+	mConnRenderProc = NULL;
+	UInt32 size = sizeof(AudioUnitRenderProc);
+	OSStatus result = AudioUnitGetProperty(	conn.sourceAudioUnit,
+							kAudioUnitProperty_FastDispatch,
+							kAudioUnitScope_Global,
+							kAudioUnitRenderSelect,
+							&mConnRenderProc,
+							&size);
+	if (result == noErr)
+		mConnInstanceStorage = CMgr_GetComponentInstanceStorage (conn.sourceAudioUnit);
+	else
+		mConnRenderProc = NULL;
+#endif
+}
+
+void	AUInputElement::Disconnect()
+{
+	mInputType = kNoInput;
+	mIOBuffer.Deallocate();
+}
+
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	AUInputElement::SetInputCallback
+//
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+void	AUInputElement::SetInputCallback(AURenderCallback proc, void *refCon)
+{
+	if (proc == NULL)
+		Disconnect();
+	else {
+		mInputType = kFromCallback;
+		mInputProc = proc;
+		mInputProcRefCon = refCon;
+		AllocateBuffer();
+	}
+}
+
+OSStatus	AUInputElement::SetStreamFormat(const CAStreamBasicDescription &fmt)
+{
+	OSStatus err = AUIOElement::SetStreamFormat(fmt);
+	if (err == AUBase::noErr)
+		AllocateBuffer();
+	return err;
+}
+
+OSStatus		AUInputElement::PullInput(	AudioUnitRenderActionFlags &  	ioActionFlags,
+											const AudioTimeStamp &			inTimeStamp,
+											AudioUnitElement				inElement,
+											UInt32							nFrames)
+{	
+	if (!IsActive())
+		return kAudioUnitErr_NoConnection;
+		
+	AudioBufferList *pullBuffer;
+	
+	if (HasConnection() || !WillAllocateBuffer())
+		pullBuffer = &mIOBuffer.PrepareNullBuffer(mStreamFormat, nFrames);
+	else
+		pullBuffer = &mIOBuffer.PrepareBuffer(mStreamFormat, nFrames);
+	
+	return PullInputWithBufferList (ioActionFlags, inTimeStamp, inElement, nFrames, pullBuffer);
+}