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livetrax/libs/appleutility/CoreAudio/PublicUtility/CAAUMIDIMap.cpp

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/*
File: CAAUMIDIMap.cpp
Abstract: CAAUMIDIMap.h
Version: 1.1
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*/
#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);
}