Exemplo n.º 1
0
UInt32		CAAUMIDIMap::NumberOfMaps (const CFDictionaryRef inData)
{
	CACFDictionary dict (inData, false);
	
	if (dict.HasKey (kParamMIDIStr)) 
	{
		CFArrayRef cfArray;
		dict.GetArray (kParamMIDIStr, cfArray); 
		
		CACFArray array (cfArray, false);
		
		return array.GetNumberItems();
	}
	return 0;
}
Exemplo n.º 2
0
static void	HP_PreferredChannels_ConstructLayoutFromDictionary(const CACFDictionary& inLayoutDictionary, AudioChannelLayout& outLayout)
{
	//	get the tag, bitmap
	inLayoutDictionary.GetUInt32(CFSTR("channel layout tag"), outLayout.mChannelLayoutTag);
	inLayoutDictionary.GetUInt32(CFSTR("channel bitmap"), outLayout.mChannelBitmap);
	
	//	get the number of channels specified in the dictionary
	UInt32 theNumberChannelsInDictionary = 0;
	inLayoutDictionary.GetUInt32(CFSTR("number channels"), theNumberChannelsInDictionary);
	
	//	get the descriptions if they are present and required
	CFArrayRef __theDescriptions;
	if((outLayout.mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelDescriptions) && inLayoutDictionary.GetArray(CFSTR("channel descriptions"), __theDescriptions))
	{
		//	don't release this array because it came straight out of the dictionary
		CACFArray theDescriptions(__theDescriptions, false);
		
		//	get the number of items in the array
		UInt32 theNumberItems = theDescriptions.GetNumberItems();
		
		//	iterate through the array and fill out the struct
		for(UInt32 theItemIndex = 0; (theItemIndex < theNumberItems) && (theItemIndex < outLayout.mNumberChannelDescriptions); ++theItemIndex)
		{
			//	get the description
			CFDictionaryRef __theDescription;
			if(theDescriptions.GetDictionary(theItemIndex, __theDescription))
			{
				//	don't release this dictionary because it came straight out of the array
				CACFDictionary theDescription(__theDescription, false);
				
				//	get the channel label and flags
				theDescription.GetUInt32(CFSTR("channel label"), outLayout.mChannelDescriptions[theItemIndex].mChannelLabel);
				theDescription.GetUInt32(CFSTR("channel flags"), outLayout.mChannelDescriptions[theItemIndex].mChannelFlags);
				
				//	get the coordinates
				CFArrayRef __theCoordinates;
				if(theDescription.GetArray(CFSTR("coordinates"), __theCoordinates))
				{
					//	don't release this array because it came straight out of the dictionary
					CACFArray theCoordinates(__theCoordinates, false);
					
					//	iterate through the array and get the coordinates
					UInt32 theNumberCoordinates = theCoordinates.GetNumberItems();
					for(UInt32 theCoordinateIndex = 0; (theCoordinateIndex < 3) && (theCoordinateIndex < theNumberCoordinates); ++theCoordinateIndex)
					{
						theCoordinates.GetFloat32(theCoordinateIndex, outLayout.mChannelDescriptions[theItemIndex].mCoordinates[theCoordinateIndex]);
					}
				}
			}
		}
	}
}