private const int SIGNATURE = 55987030; // "VKV\x03" aka valve keyvalue, version 3
#endregion Fields
#region Methods
public override void Read(BinaryReader reader, Resource resource)
{
if (resource.IntrospectionManifest == null)
{
var block = new ResourceIntrospectionManifest.ResourceDiskStruct();
var field = new ResourceIntrospectionManifest.ResourceDiskStruct.Field
{
FieldName = "m_Signature",
Count = 1,
Type = DataType.Int32
};
block.FieldIntrospection.Add(field);
field = new ResourceIntrospectionManifest.ResourceDiskStruct.Field
{
FieldName = "m_Encoding",
Count = 4,
OnDiskOffset = 4,
Type = DataType.Boolean
};
block.FieldIntrospection.Add(field);
field = new ResourceIntrospectionManifest.ResourceDiskStruct.Field
{
FieldName = "m_Format",
Count = 4,
OnDiskOffset = 20,
Type = DataType.Boolean
};
block.FieldIntrospection.Add(field);
resource.Blocks[BlockType.NTRO] = new ResourceIntrospectionManifest();
resource.IntrospectionManifest.ReferencedStructs.Add(block);
}
base.Read(reader, resource);
reader.BaseStream.Position = Offset;
// TODO: Use parsed NTRO data
if (reader.ReadUInt32() != SIGNATURE)
{
throw new InvalidDataException("Wrong signature.");
}
reader.BaseStream.Position += 32; // encoding + format (guids?)
// TODO
}
public override void Read(BinaryReader reader, Resource resource)
{
// NTRO only in version 0?
if (resource.IntrospectionManifest == null)
{
var block = new ResourceIntrospectionManifest.ResourceDiskStruct();
var field = new ResourceIntrospectionManifest.ResourceDiskStruct.Field
{
FieldName = "m_bitpackedsoundinfo",
Type = DataType.UInt32
};
block.FieldIntrospection.Add(field);
field = new ResourceIntrospectionManifest.ResourceDiskStruct.Field
{
FieldName = "m_loopStart",
Type = DataType.Int32,
OnDiskOffset = 4,
};
block.FieldIntrospection.Add(field);
field = new ResourceIntrospectionManifest.ResourceDiskStruct.Field
{
FieldName = "m_flDuration",
Type = DataType.Float,
OnDiskOffset = 12,
};
block.FieldIntrospection.Add(field);
resource.Blocks[BlockType.NTRO] = new ResourceIntrospectionManifest();
resource.IntrospectionManifest.ReferencedStructs.Add(block);
}
reader.BaseStream.Position = Offset;
base.Read(reader, resource);
LoopStart = ((NTROValue<int>)Output["m_loopStart"]).Value;
Duration = ((NTROValue<float>)Output["m_flDuration"]).Value;
var bitpackedSoundInfo = ((NTROValue<uint>)Output["m_bitpackedsoundinfo"]).Value;
Type = (AudioFileType)ExtractSub(bitpackedSoundInfo, 0, 2);
Bits = ExtractSub(bitpackedSoundInfo, 2, 5);
Channels = ExtractSub(bitpackedSoundInfo, 7, 2);
SampleSize = ExtractSub(bitpackedSoundInfo, 9, 3);
AudioFormat = ExtractSub(bitpackedSoundInfo, 12, 2);
SampleRate = ExtractSub(bitpackedSoundInfo, 14, 17);
if (Type != AudioFileType.MP3 && Type != AudioFileType.WAV)
{
throw new NotImplementedException($"Unknown audio file format '{Type}', please report this on GitHub.");
}
}