internal AudioCategory(AudioEngine audioengine, string name, BinaryReader reader)
{
Debug.Assert(audioengine != null);
Debug.Assert(!string.IsNullOrEmpty(name));
this.sounds = new List <XactSound>();
this.name = name;
engine = audioengine;
maxInstances = reader.ReadByte();
instanceLimit = maxInstances != 0xff;
fadeIn = (reader.ReadUInt16() / 1000f);
fadeOut = (reader.ReadUInt16() / 1000f);
byte instanceFlags = reader.ReadByte();
fadeType = (CrossfadeType)(instanceFlags & 0x7);
instanceBehaviour = (MaxInstanceBehaviour)(instanceFlags >> 3);
reader.ReadUInt16(); //unkn
var volume = XactHelpers.ParseVolumeFromDecibels(reader.ReadByte());
_volume = new float[1] {
volume
};
byte visibilityFlags = reader.ReadByte();
isBackgroundMusic = (visibilityFlags & 0x1) != 0;
isPublic = (visibilityFlags & 0x2) != 0;
}
internal AudioCategory(AudioEngine audioengine, string name, BinaryReader reader)
{
Debug.Assert(audioengine != null);
Debug.Assert(!string.IsNullOrEmpty(name));
this.sounds = new List <Cue>();
this.name = name;
engine = audioengine;
maxInstances = reader.ReadByte();
instanceLimit = maxInstances != 0xff;
fadeIn = (reader.ReadUInt16() / 1000f);
fadeOut = (reader.ReadUInt16() / 1000f);
byte instanceFlags = reader.ReadByte();
fadeType = (CrossfadeType)(instanceFlags & 0x7);
instanceBehaviour = (MaxInstanceBehaviour)(instanceFlags >> 3);
reader.ReadUInt16(); //unkn
byte vol = reader.ReadByte(); //volume in unknown format
//lazy 4-param fitting:
//0xff 6.0
//0xca 2.0
//0xbf 1.0
//0xb4 0.0
//0x8f -4.0
//0x5a -12.0
//0x14 -38.0
//0x00 -96.0
var a = -96.0;
var b = 0.432254984608615;
var c = 80.1748600297963;
var d = 67.7385212334047;
volume = (float)(((a - d) / (1 + (Math.Pow(vol / c, b)))) + d);
byte visibilityFlags = reader.ReadByte();
isBackgroundMusic = (visibilityFlags & 0x1) != 0;
isPublic = (visibilityFlags & 0x2) != 0;
}
