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

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/*
File: CAAUMIDIMapManager.cpp
Abstract: CAAUMIDIMapManager.h
Version: 1.1
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*/
#include "CAAUMIDIMapManager.h"
#include <AudioToolbox/AudioUnitUtilities.h>
CAAUMIDIMapManager::CAAUMIDIMapManager()
{
hotMapping = false;
}
static void FillInMap (CAAUMIDIMap &map, AUBase &That)
{
AudioUnitParameterInfo info;
That.GetParameterInfo (map.mScope, map.mParameterID, info);
if (map.IsSubRange()) {
map.mMinValue = map.mSubRangeMin;
map.mMaxValue = map.mSubRangeMax;
} else {
map.mMinValue = info.minValue;
map.mMaxValue = info.maxValue;
}
map.mTransType = CAAUMIDIMap::GetTransformer(info.flags);
}
OSStatus CAAUMIDIMapManager::SortedInsertToParamaterMaps (AUParameterMIDIMapping *maps, UInt32 inNumMaps, AUBase &That)
{
for (unsigned int i = 0; i < inNumMaps; ++i)
{
CAAUMIDIMap map(maps[i]);
FillInMap (map, That);
int idx = FindParameterIndex (maps[i]);
if (idx > -1)
mParameterMaps.erase(mParameterMaps.begin() + idx);
// least disruptive place to put this is at the end
mParameterMaps.push_back(map);
}
std::sort(mParameterMaps.begin(), mParameterMaps.end(), CompareMIDIMap());
return noErr;
}
void CAAUMIDIMapManager::GetHotParameterMap(AUParameterMIDIMapping &outMap )
{
outMap = mHotMap;
}
void CAAUMIDIMapManager::SortedRemoveFromParameterMaps(AUParameterMIDIMapping *maps, UInt32 inNumMaps, bool &outMapDidChange)
{
if (hotMapping) {
hotMapping = false;
}
outMapDidChange = false;
for (unsigned int i = 0; i < inNumMaps; ++i) {
int idx = FindParameterIndex (maps[i]);
if (idx > -1) {
//mParameterMaps[idx].Print();
mParameterMaps.erase(mParameterMaps.begin() + idx);
outMapDidChange = true;
}
}
}
void CAAUMIDIMapManager::ReplaceAllMaps (AUParameterMIDIMapping* inMappings, UInt32 inNumMaps, AUBase &That)
{
mParameterMaps.clear();
for (unsigned int i = 0; i < inNumMaps; ++i) {
CAAUMIDIMap mapping(inMappings[i]);
FillInMap (mapping, That);
mParameterMaps.push_back (mapping);
}
std::sort(mParameterMaps.begin(),mParameterMaps.end(), CompareMIDIMap());
}
bool CAAUMIDIMapManager::HandleHotMapping(UInt8 inStatus,
UInt8 inChannel,
UInt8 inData1,
AUBase &That)
{ //used to set the hot map info
if (inStatus == 0xf0) return false;
if (!hotMapping) return false;
hotMapping = false;
mHotMap.mStatus = inStatus | inChannel;
mHotMap.mData1 = inData1;
SortedInsertToParamaterMaps (&mHotMap, 1, That);
return true;
}
#if DEBUG
void CAAUMIDIMapManager::Print()
{
for ( ParameterMaps::iterator i = mParameterMaps.begin(); i < mParameterMaps.end(); ++i) {
CAAUMIDIMap* listmap = &(*i);
listmap->Print();
}
}
#endif // DEBUG
void CAAUMIDIMapManager::GetMaps(AUParameterMIDIMapping* maps)
{
int i = 0;
for ( ParameterMaps::iterator iter = mParameterMaps.begin(); iter < mParameterMaps.end(); ++iter, ++i) {
AUParameterMIDIMapping &listmap = (*iter);
maps[i] = listmap;
}
}
int CAAUMIDIMapManager::FindParameterIndex (AUParameterMIDIMapping &inMap)
{
//used to get back hot mapping and one at a time maps, for ui
int idx = 0;
for ( ParameterMaps::iterator i = mParameterMaps.begin(); i < mParameterMaps.end(); ++i) {
CAAUMIDIMap & listmap = (*i);
if ( (listmap.mParameterID == inMap.mParameterID) &&
(listmap.mScope == inMap.mScope) &&
(listmap.mElement == inMap.mElement) )
{
return idx;
}
idx++;
}
return -1;
}
bool CAAUMIDIMapManager::FindParameterMapEventMatch( UInt8 inStatus,
UInt8 inChannel,
UInt8 inData1,
UInt8 inData2,
UInt32 inBufferOffset,
AUBase& inAUBase)
{
bool ret_value = false;
if (inStatus == 0x90 && !inData2)
inStatus = 0x80 | inChannel;
//used to test for midi matches once map is made
CAAUMIDIMap tempMap;
tempMap.mStatus = inStatus | inChannel;
tempMap.mData1 = inData1;
CompareMIDIMap compareObj;
AudioUnitEvent event;
event.mEventType = kAudioUnitEvent_ParameterValueChange;
event.mArgument.mParameter.mAudioUnit = inAUBase.GetComponentInstance();
ParameterMaps::iterator lower_iter =
std::lower_bound(mParameterMaps.begin(), mParameterMaps.end(), tempMap, compareObj);
while (lower_iter < mParameterMaps.end())
{
CAAUMIDIMap & map = (*lower_iter);
if (compareObj.Finish(map, tempMap))
break;
Float32 value;
if (map.MIDI_Matches(inChannel, inData1, inData2, value))
{
inAUBase.SetParameter ( map.mParameterID, map.mScope, map.mElement,
map.ParamValueFromMIDILinear(value), inBufferOffset);
event.mArgument.mParameter.mParameterID = map.mParameterID;
event.mArgument.mParameter.mScope = map.mScope;
event.mArgument.mParameter.mElement = map.mElement;
AUEventListenerNotify(NULL, NULL, &event);
ret_value = true;
}
++lower_iter;
}
return ret_value;
}