228 lines
6.5 KiB
C++
228 lines
6.5 KiB
C++
/*
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File: CAAUMIDIMap.cpp
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Abstract: CAAUMIDIMap.h
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Version: 1.1
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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#include "CAAUMIDIMap.h"
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#include <pthread.h>
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struct AllMidiTransformers
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{
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MIDILinearTransformer linearTrans;
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MIDILogTransformer logTrans;
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MIDIExpTransformer expTrans;
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MIDISqrtTransformer sqrtTrans;
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MIDISquareTransformer squareTrans;
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MIDICubeRtTransformer cubeRtTrans;
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MIDICubeTransformer cubeTrans;
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};
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AllMidiTransformers* gAllMidiTransformers = NULL;
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#if TARGET_OS_MAC
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static pthread_once_t sOnce = PTHREAD_ONCE_INIT;
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static void InitAllMidiTransformers()
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{
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gAllMidiTransformers = new AllMidiTransformers();
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}
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static void CheckInitAllMidiTransformers()
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{
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pthread_once(&sOnce, InitAllMidiTransformers);
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}
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#endif
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MIDIValueTransformer * CAAUMIDIMap::GetTransformer (UInt32 inFlags)
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{
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#if TARGET_OS_MAC
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if (gAllMidiTransformers == NULL)
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CheckInitAllMidiTransformers();
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#else
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if (gAllMidiTransformers == NULL)
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gAllMidiTransformers = new AllMidiTransformers();
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#endif
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if (AudioUnitDisplayTypeIsLogarithmic(inFlags))
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return &gAllMidiTransformers->logTrans;
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else if (AudioUnitDisplayTypeIsExponential(inFlags))
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return &gAllMidiTransformers->expTrans;
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else if (AudioUnitDisplayTypeIsSquareRoot(inFlags))
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return &gAllMidiTransformers->sqrtTrans;
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else if (AudioUnitDisplayTypeIsSquared(inFlags))
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return &gAllMidiTransformers->squareTrans;
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else if (AudioUnitDisplayTypeIsCubed(inFlags))
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return &gAllMidiTransformers->cubeTrans;
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else if (AudioUnitDisplayTypeIsCubeRoot(inFlags))
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return &gAllMidiTransformers->cubeRtTrans;
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else
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return &gAllMidiTransformers->linearTrans;
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}
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// The CALLER of this method must ensure that the status byte's MIDI Command matches!!!
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bool CAAUMIDIMap::MIDI_Matches (UInt8 inChannel, UInt8 inData1, UInt8 inData2, Float32 &outLinear) const
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{
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// see if the channels match first
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SInt8 chan = Channel();
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// channel matches (if chan is less than zero, "Any Channel" flag is set)
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if (chan >= 0 && chan != inChannel)
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return false;
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// match the special cases first
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if (IsKeyEvent()) {
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// we're using this key event as an on/off type switch
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if (IsBipolar()) {
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if (IsKeyPressure()){
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if (IsBipolar_OnValue()) {
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if (inData2 > 63) {
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outLinear = 1;
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return true;
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}
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} else {
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if (inData2 < 64) {
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outLinear = 0;
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return true;
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}
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}
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return false;
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}
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else {
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if (IsBipolar_OnValue()) {
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if (inData1 > 63) {
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outLinear = 1;
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return true;
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}
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} else {
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if (inData1 < 64) {
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outLinear = 0;
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return true;
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}
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}
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return false;
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}
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}
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if (IsAnyNote()) {
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// not quite sure how to interpret this...
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if (IsKeyPressure())
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outLinear = inData2 / 127.0;
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else
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outLinear = inData1 / 127.0;
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return true;
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}
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if (mData1 == inData1) {
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if (IsKeyPressure())
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outLinear = inData2 / 127.0;
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else
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outLinear = 1;
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return true;
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}
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return false;
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}
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else if (IsControlChange()) {
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// controller ID matches
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if (mData1 == inData1) {
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if (IsBipolar()) {
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if (IsBipolar_OnValue()) {
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if (inData2 > 63) {
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outLinear = 1;
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return true;
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}
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} else {
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if (inData2 < 64) {
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outLinear = 0;
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return true;
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}
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}
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return false;
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}
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//printf("this in midi matches %X with ", this);
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outLinear = inData2 / 127.;
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return true;
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}
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return false;
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}
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// this just matches on the patch change value itself...
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if (IsPatchChange()) {
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if (mData1 == inData1) {
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outLinear = 1;
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return true;
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}
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return false;
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}
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// finally, for the other two, just check the bi-polar matching conditions
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// pitch bend and after touch
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if (IsBipolar()) {
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if (IsBipolar_OnValue()) {
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if (inData1 > 63) {
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outLinear = 1;
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return true;
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}
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} else {
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if (inData1 < 64) {
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outLinear = 0;
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return true;
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}
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}
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return false;
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}
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if (IsPitchBend()) {
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UInt16 value = (inData2 << 7) | inData1;
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outLinear = value / 16383.;
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}
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else if (IsChannelPressure()) {
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outLinear = inData1 / 127.0;
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}
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return true;
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}
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void CAAUMIDIMap::Print () const
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{
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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);
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}
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