alternative new version of the AppleUtility library

libs/appleutility/CoreAudio/PublicUtility/CAAUMIDIMap.cpp

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+/*
+     File: CAAUMIDIMap.cpp
+ Abstract: CAAUMIDIMap.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 "CAAUMIDIMap.h"
+#include <pthread.h>
+
+struct AllMidiTransformers
+{
+	MIDILinearTransformer linearTrans; 
+	MIDILogTransformer logTrans;
+	MIDIExpTransformer expTrans;
+	MIDISqrtTransformer sqrtTrans;
+	MIDISquareTransformer squareTrans;
+	MIDICubeRtTransformer cubeRtTrans;
+	MIDICubeTransformer cubeTrans;
+};
+
+AllMidiTransformers* gAllMidiTransformers = NULL;
+
+#if TARGET_OS_MAC
+static pthread_once_t sOnce = PTHREAD_ONCE_INIT;
+
+static void InitAllMidiTransformers()
+{
+	gAllMidiTransformers = new AllMidiTransformers();
+}
+
+static void CheckInitAllMidiTransformers()
+{
+	pthread_once(&sOnce, InitAllMidiTransformers);
+}
+#endif
+
+MIDIValueTransformer *	CAAUMIDIMap::GetTransformer (UInt32 inFlags)
+{
+#if TARGET_OS_MAC
+	if (gAllMidiTransformers == NULL) 
+		CheckInitAllMidiTransformers();
+#else
+	if (gAllMidiTransformers == NULL) 
+		gAllMidiTransformers = new AllMidiTransformers();
+#endif
+	
+	if (AudioUnitDisplayTypeIsLogarithmic(inFlags))
+		return &gAllMidiTransformers->logTrans;
+	else if (AudioUnitDisplayTypeIsExponential(inFlags))
+		return &gAllMidiTransformers->expTrans;
+	else if (AudioUnitDisplayTypeIsSquareRoot(inFlags))
+		return &gAllMidiTransformers->sqrtTrans;
+	else if (AudioUnitDisplayTypeIsSquared(inFlags))
+		return &gAllMidiTransformers->squareTrans;
+	else if (AudioUnitDisplayTypeIsCubed(inFlags))
+		return &gAllMidiTransformers->cubeTrans;
+	else if (AudioUnitDisplayTypeIsCubeRoot(inFlags))
+		return &gAllMidiTransformers->cubeRtTrans;
+	else
+		return &gAllMidiTransformers->linearTrans;
+}
+
+// The CALLER of this method must ensure that the status byte's MIDI Command matches!!!
+bool	CAAUMIDIMap::MIDI_Matches (UInt8 inChannel, UInt8 inData1, UInt8 inData2, Float32 &outLinear) const
+{
+	// see if the channels match first
+	SInt8 chan = Channel();
+	// channel matches (if chan is less than zero, "Any Channel" flag is set)
+	if (chan >= 0 && chan != inChannel)
+		return false;
+
+	// match the special cases first
+	if (IsKeyEvent()) {
+		// we're using this key event as an on/off type switch
+		if (IsBipolar()) {
+			if (IsKeyPressure()){
+				if (IsBipolar_OnValue()) {
+					if (inData2 > 63) {
+						outLinear = 1;
+						return true;
+					}
+				} else {
+					if (inData2 < 64) {
+						outLinear = 0;
+						return true;
+					}
+				}
+				return false;
+			}
+			else {
+				if (IsBipolar_OnValue()) {
+					if (inData1 > 63) {
+						outLinear = 1;
+						return true;
+					}
+				} else {
+					if (inData1 < 64) {
+						outLinear = 0;
+						return true;
+					}
+				}
+				return false;
+			}
+		}
+		if (IsAnyNote()) {
+// not quite sure how to interpret this...
+			if (IsKeyPressure())
+				outLinear = inData2 / 127.0;
+			else
+				outLinear = inData1 / 127.0;
+			return true;
+		}
+		if (mData1 == inData1) {
+			if (IsKeyPressure())
+				outLinear = inData2 / 127.0;
+			else
+				outLinear = 1;
+			return true;
+		}
+		return false;
+	}
+	else if (IsControlChange()) {
+		// controller ID matches
+		if (mData1 == inData1) {
+			if (IsBipolar()) {
+				if (IsBipolar_OnValue()) {
+					if (inData2 > 63) {
+						outLinear = 1;
+						return true;
+					}
+				} else {
+					if (inData2 < 64) {
+						outLinear = 0;
+						return true;
+					}
+				}
+				return false;
+			}
+			//printf("this in midi matches %X with ", this); 
+			outLinear = inData2 / 127.; 
+			return true;
+		}
+		return false;
+	}
+	
+		// this just matches on the patch change value itself...
+	if (IsPatchChange()) {
+		if (mData1 == inData1) {
+			outLinear = 1;
+			return true;
+		}
+		return false;
+	}
+
+	// finally, for the other two, just check the bi-polar matching conditions
+	// pitch bend and after touch
+	if (IsBipolar()) {
+		if (IsBipolar_OnValue()) {
+			if (inData1 > 63) {
+				outLinear = 1;
+				return true;
+			}
+		} else {
+			if (inData1 < 64) {
+				outLinear = 0;
+				return true;
+			}
+		}
+		return false;
+	}
+
+	if (IsPitchBend()) {
+		UInt16 value = (inData2 << 7) | inData1;
+		outLinear = value / 16383.;
+	}
+	else if (IsChannelPressure()) {
+		outLinear = inData1 / 127.0;
+	}
+
+	return true;
+}
+
+
+void		CAAUMIDIMap::Print () const
+{
+	printf ("CAAUMIDIMap:%p, (%u/%u), mParamID %d, IsValid:%c, Status:0x%X, mData1 %d, Flags:0x%X\n", this, (unsigned int)mScope, (unsigned int)mElement, (int)mParameterID, (IsValid() ? 'T' : 'F'), mStatus, mData1, (int)mFlags);
+}