public EventInstance(XACTEvent evt)
{
Event = evt;
Timestamp = (
Event.Timestamp +
XACTEvent.Random.Next(0, Event.RandomOffset)
);
LoopCount = Event.LoopCount;
Played = false;
}
public XACTClip(BinaryReader reader, double clipVolume)
{
// Number of XACT Events
Events = new XACTEvent[reader.ReadByte()];
for (int i = 0; i < Events.Length; i += 1)
{
// Full Event information
uint eventInfo = reader.ReadUInt32();
// XACT Event Type, Timestamp
uint eventType = eventInfo & 0x0000001F;
uint eventTimestamp = (eventInfo >> 5) & 0x0000FFFF;
// uint eventUnknown = eventInfo >> 21;
// Random offset, unused
reader.ReadUInt16();
// Load the Event
if (eventType == 0)
{
// TODO: Codename OhGodNo
// Stop Event
}
else if (eventType == 1)
{
// Unknown value
reader.ReadByte();
/* Event Flags
* 0x01 = Break Loop
* 0x02 = Use Speaker Position
* 0x04 = Use Center Speaker
* 0x08 = New Speaker Position On Loop
*/
reader.ReadByte();
// WaveBank Track Index
ushort track = reader.ReadUInt16();
// WaveBank Index
byte waveBank = reader.ReadByte();
// Number of times to loop wave (255 is infinite)
byte loopCount = reader.ReadByte();
// Speaker position angle/arc, unused
reader.ReadUInt16();
reader.ReadUInt16();
// Finally.
Events[i] = new PlayWaveEvent(
eventTimestamp,
new ushort[] { track },
new byte[] { waveBank },
0,
0,
clipVolume,
clipVolume,
0xFF,
loopCount,
0,
new byte[] { 0xFF }
);
}
else if (eventType == 3)
{
// Unknown value
reader.ReadByte();
/* Event Flags
* 0x01 = Break Loop
* 0x02 = Use Speaker Position
* 0x04 = Use Center Speaker
* 0x08 = New Speaker Position On Loop
*/
reader.ReadByte();
// Number of times to loop wave (255 is infinite)
byte loopCount = reader.ReadByte();
// Speaker position angle/arc, unused
reader.ReadUInt16();
reader.ReadUInt16();
// Number of WaveBank tracks
ushort numTracks = reader.ReadUInt16();
/* Variation Playlist Type.
* First 4 bytes indicates Variation Type.
* Next 4 bytes appear to indicate New Variation On Loop.
* The rest is currently unknown.
* -flibit
*/
ushort variationType = (ushort) (reader.ReadUInt16() & 0x000F);
// Unknown values
reader.ReadBytes(4);
// Obtain WaveBank track information
ushort[] tracks = new ushort[numTracks];
byte[] waveBanks = new byte[numTracks];
byte[] weights = new byte[numTracks];
for (ushort j = 0; j < numTracks; j += 1)
{
tracks[j] = reader.ReadUInt16();
waveBanks[j] = reader.ReadByte();
byte minWeight = reader.ReadByte();
byte maxWeight = reader.ReadByte();
weights[j] = (byte) (maxWeight - minWeight);
}
// Finally.
Events[i] = new PlayWaveEvent(
eventTimestamp,
tracks,
waveBanks,
0,
0,
clipVolume,
clipVolume,
0xFF,
loopCount,
variationType,
weights
);
}
else if (eventType == 4)
{
// Unknown value
reader.ReadByte();
/* Event Flags
* 0x01 = Break Loop
* 0x02 = Use Speaker Position
* 0x04 = Use Center Speaker
* 0x08 = New Speaker Position On Loop
*/
reader.ReadByte();
// WaveBank track
ushort track = reader.ReadUInt16();
// WaveBank index, unconfirmed
byte waveBank = reader.ReadByte();
// Loop Count, unconfirmed
byte loopCount = reader.ReadByte();
// Speaker position angle/arc, unused
reader.ReadUInt16();
reader.ReadUInt16();
// Pitch Variation
short minPitch = reader.ReadInt16();
short maxPitch = reader.ReadInt16();
// Volume Variation
double minVolume = XACTCalculator.ParseDecibel(reader.ReadByte());
double maxVolume = XACTCalculator.ParseDecibel(reader.ReadByte());
// Frequency Variation, unusued
reader.ReadSingle();
reader.ReadSingle();
// Q Factor Variation, unused
reader.ReadSingle();
reader.ReadSingle();
// Filter Type
byte filterType = reader.ReadByte();
// Finally.
Events[i] = new PlayWaveEvent(
eventTimestamp,
new ushort[] { track },
new byte[] { waveBank },
minPitch,
maxPitch,
minVolume,
maxVolume,
filterType,
loopCount,
0,
new byte[] { 0xFF }
);
}
else if (eventType == 6)
{
// Unknown value
reader.ReadByte();
/* Event Flags
* 0x01 = Break Loop
* 0x02 = Use Speaker Position
* 0x04 = Use Center Speaker
* 0x08 = New Speaker Position On Loop
*/
reader.ReadByte();
// Number of times to loop wave (255 is infinite)
byte loopCount = reader.ReadByte();
// Speaker position angle/arc, unused
reader.ReadUInt16();
reader.ReadUInt16();
// Pitch variation
short minPitch = reader.ReadInt16();
short maxPitch = reader.ReadInt16();
// Volume variation
double minVolume = XACTCalculator.ParseDecibel(reader.ReadByte());
double maxVolume = XACTCalculator.ParseDecibel(reader.ReadByte());
// Frequency Variation, unusued
reader.ReadSingle();
reader.ReadSingle();
// Q Factor Variation, unused
reader.ReadSingle();
reader.ReadSingle();
// Filter Type
byte filterType = reader.ReadByte();
// Variation flags
// FIXME: There's probably more to these flags...
byte varFlags = reader.ReadByte();
if ((varFlags & 0x20) != 0x20)
{
// Throw out the volume variation.
minVolume = clipVolume;
maxVolume = clipVolume;
}
if ((varFlags & 0x10) != 0x10)
{
// Throw out the pitch variation
minPitch = 0;
maxPitch = 0;
}
// Number of WaveBank tracks
ushort numTracks = reader.ReadUInt16();
/* Variation Playlist Type.
* First 4 bytes indicates Variation Type.
* Next 4 bytes appear to indicate New Variation On Loop.
* The rest is currently unknown.
* -flibit
*/
ushort variationType = (ushort) (reader.ReadUInt16() & 0x000F);
// Unknown values
reader.ReadBytes(4);
// Obtain WaveBank track information
ushort[] tracks = new ushort[numTracks];
byte[] waveBanks = new byte[numTracks];
byte[] weights = new byte[numTracks];
for (ushort j = 0; j < numTracks; j += 1)
{
tracks[j] = reader.ReadUInt16();
waveBanks[j] = reader.ReadByte();
byte minWeight = reader.ReadByte();
byte maxWeight = reader.ReadByte();
weights[j] = (byte) (maxWeight - minWeight);
}
// Finally.
Events[i] = new PlayWaveEvent(
eventTimestamp,
tracks,
waveBanks,
minPitch,
maxPitch,
minVolume,
maxVolume,
filterType,
loopCount,
variationType,
weights
);
}
else if (eventType == 7)
{
// TODO: Codename OhGodNo -flibit
// Pitch Event
}
else if (eventType == 8)
{
// Unknown values
reader.ReadBytes(2);
/* Event Flags
* 0x01 = Add, rather than replace
* Rest is unknown
*/
bool addVolume = (reader.ReadByte() & 0x01) == 0x01;
// Operand Constant
float constant = reader.ReadSingle() / 100.0f;
if (addVolume)
{
constant += (float) clipVolume;
}
// Unknown values
reader.ReadBytes(8);
Events[i] = new SetVolumeEvent(
eventTimestamp,
XACTCalculator.CalculateAmplitudeRatio(constant)
);
}
else if (eventType == 15)
{
// TODO: Codename OhGodNo -flibit
// Unknown Event!
}
else if (eventType == 17)
{
// TODO: Codename OhGodNo -flibit
// Volume Repeat Event
}
else
{
/* TODO: All XACT Events.
* The following type information is based on
* third-party contributions:
* Type 9 - Marker Event
* -flibit
*/
throw new Exception(
"EVENT TYPE " + eventType.ToString() + " NOT IMPLEMENTED!"
);
}
}
}
public XACTClip(ushort track, byte waveBank)
{
Events = new XACTEvent[1];
Events[0] = new PlayWaveEvent(
0,
new ushort[] { track },
new byte[] { waveBank },
0,
0,
1.0,
1.0,
0xFF,
0,
0,
new byte[] { 0xFF }
);
}