public WwaInput(Stream file, int count, int dir_size) : base(null)
{
file.Position = 0x10;
var header = new byte[count * dir_size];
if (header.Length != file.Read(header, 0, header.Length))
{
throw new InvalidFormatException();
}
var section = WpxSection.Find(header, 0x20, count, dir_size);
if (null == section || section.UnpackedSize < 0x10 || section.DataFormat != 0x80)
{
throw new InvalidFormatException();
}
file.Position = section.Offset;
Format = ReadFormat(file);
section = WpxSection.Find(header, 0x21, count, dir_size);
if (null == section)
{
throw new InvalidFormatException();
}
var reader = new WwaReader(file, section);
var data = reader.Unpack(section.DataFormat);
if (null == data)
{
throw new InvalidFormatException();
}
Source = new MemoryStream(data);
file.Dispose();
}
} // 'WPX'
public override SoundInput TryOpen(IBinaryStream file)
{
var header = file.ReadHeader(0x10);
if (!header.AsciiEqual(4, "WAV"))
{
return(null);
}
int count = header[0xE];
int dir_size = header[0xF];
if (1 != header[0xC] || 0 == count || 0 == dir_size)
{
return(null);
}
file.Position = 0x10;
var index = file.ReadBytes(count * dir_size);
var section = WpxSection.Find(index, 0x20, count, dir_size);
if (null == section || section.UnpackedSize < 0x10 || section.DataFormat != 0x80)
{
throw new InvalidFormatException();
}
file.Position = section.Offset;
var fmt = file.ReadBytes(section.UnpackedSize);
section = WpxSection.Find(index, 0x21, count, dir_size);
if (null == section)
{
throw new InvalidFormatException();
}
var reader = new WwaReader(file.AsStream, section);
var data = reader.Unpack(section.DataFormat);
if (null == data)
{
throw new InvalidFormatException();
}
int total_size = 20 + fmt.Length + data.Length;
using (var wav_file = new MemoryStream(20 + fmt.Length))
using (var wav = new BinaryWriter(wav_file))
{
wav.Write(Wav.Signature);
wav.Write(total_size);
wav.Write(0x45564157); // 'WAVE'
wav.Write(0x20746d66); // 'fmt '
wav.Write(fmt.Length);
wav.Write(fmt);
wav.Write(0x61746164); // 'data'
wav.Write(data.Length);
var wav_header = wav_file.ToArray();
var data_stream = new MemoryStream(data);
var source = new PrefixStream(wav_header, data_stream);
var sound = new WaveInput(source);
file.Dispose();
return(sound);
}
}