/// <summary>
/// Extracts an xWMA sound and converts it to another format.
/// </summary>
/// <param name="reader">The stream to read from.</param>
/// <param name="offset">The offset of the data to extract.</param>
/// <param name="rifx">The RIFX data for the sound.</param>
/// <param name="outPath">The path of the file to save to. The file extension will determine the output format.</param>
public static void ExtractAndConvertXWMA(EndianReader reader, int offset, RIFX rifx, string outPath)
{
// Extract a WAV to a temporary file and then convert it
string tempPath = Path.GetTempFileName();
try
{
ExtractXWMAToWAV(reader, offset, rifx, tempPath);
ConvertFile(tempPath, outPath);
}
finally
{
// Delete the temporary file
if (File.Exists(tempPath))
File.Delete(tempPath);
}
}
/// <summary>
/// Identifies the format of a Wwise sound based upon RIFX header information.
/// </summary>
/// <param name="rifx">The RIFX header information for the sound.</param>
/// <returns>A SoundFormat value indicating the type of the sound, or SoundFormat.Unknown if identification failed.</returns>
public static SoundFormat IdentifyFormat(RIFX rifx)
{
if (rifx.FormatMagic == RIFFFormat.XWMA)
{
if (rifx.Codec == RIFXCodec.WMA || rifx.Codec == RIFXCodec.WMAPro)
return SoundFormat.XWMA;
}
else if (rifx.FormatMagic == RIFFFormat.WAVE)
{
switch (rifx.Codec)
{
case RIFXCodec.WwiseOGG:
return SoundFormat.WwiseOGG;
case RIFXCodec.XMA:
return SoundFormat.XMA;
}
}
return SoundFormat.Unknown;
}
/// <summary>
/// Extracts an xWMA sound and converts it to WAV.
/// </summary>
/// <param name="reader">The stream to read from.</param>
/// <param name="offset">The offset of the data to extract.</param>
/// <param name="rifx">The RIFX data for the sound.</param>
/// <param name="outPath">The path of the file to save to.</param>
public static void ExtractXWMAToWAV(EndianReader reader, int offset, RIFX rifx, string outPath)
{
// Create a temporary file to write an XWMA to
string tempFile = Path.GetTempFileName();
try
{
using (EndianWriter output = new EndianWriter(File.OpenWrite(tempFile), EndianFormat.BigEndian))
{
// Generate a little-endian XWMA header
// TODO: move this into a class?
output.Write(0x52494646); // 'RIFF'
// Recompute the file size because the one Wwise gives us is trash
// fileSize = header size (always 0x2C) + dpds data size + data header size (always 0x8) + data size
int fileSize = 0x2C + rifx.SeekOffsets.Length * 0x4 + 0x8 + rifx.DataSize;
output.EndianType = EndianFormat.LittleEndian;
output.Write(fileSize);
output.EndianType = EndianFormat.BigEndian;
output.Write(RIFFFormat.XWMA);
// Generate the 'fmt ' chunk
output.Write(0x666D7420); // 'fmt '
output.EndianType = EndianFormat.LittleEndian;
output.Write(0x18); // Chunk size
output.Write(rifx.Codec);
output.Write(rifx.ChannelCount);
output.Write(rifx.SampleRate);
output.Write(rifx.BytesPerSecond);
output.Write(rifx.BlockAlign);
output.Write(rifx.BitsPerSample);
// Write the extradata
// Bytes 4 and 5 have to be flipped because they make up an int16
// TODO: add error checking to make sure the extradata is the correct size (0x6)
output.Write((short)0x6);
output.WriteBlock(rifx.ExtraData, 0, 4);
output.Write(rifx.ExtraData[5]);
output.Write(rifx.ExtraData[4]);
// Generate the 'dpds' chunk
// It's really just the 'seek' chunk from the original data but renamed
output.EndianType = EndianFormat.BigEndian;
output.Write(0x64706473); // 'dpds'
output.EndianType = EndianFormat.LittleEndian;
output.Write(rifx.SeekOffsets.Length * 4); // One uint32 per offset
foreach (int seek in rifx.SeekOffsets)
output.Write(seek);
// 'data' chunk
output.EndianType = EndianFormat.BigEndian;
output.Write(0x64617461); // 'data'
output.EndianType = EndianFormat.LittleEndian;
output.Write(rifx.DataSize);
// Copy the data chunk contents from the original RIFX
reader.SeekTo(offset + rifx.DataOffset);
StreamUtil.Copy(reader, output, rifx.DataSize);
}
// Convert it with xWMAEncode
RunProgramSilently("Helpers/xWMAEncode.exe", "\"" + tempFile + "\" \"" + outPath + "\"", Directory.GetCurrentDirectory());
}
finally
{
// Delete the temporary XWMA file
if (File.Exists(tempFile))
File.Delete(tempFile);
}
}
/// <summary>
/// Extracts an XMA sound and converts it to a WAV.
/// </summary>
/// <param name="reader">The stream to read from.</param>
/// <param name="offset">The offset of the data to extract.</param>
/// <param name="rifx">The RIFX data for the sound.</param>
/// <param name="outPath">The path of the file to save to.</param>
public static void ExtractXMAToWAV(EndianReader reader, int offset, RIFX rifx, string outPath)
{
// Create a temporary file to write an XMA to
string tempFile = Path.GetTempFileName();
try
{
using (EndianWriter output = new EndianWriter(File.OpenWrite(tempFile), EndianFormat.BigEndian))
{
// Generate an XMA header
// ADAPTED FROM wwisexmabank - I DO NOT TAKE ANY CREDIT WHATSOEVER FOR THE FOLLOWING CODE.
// See http://hcs64.com/vgm_ripping.html for more information
output.Write(0x52494646); // 'RIFF'
output.EndianType = EndianFormat.LittleEndian;
output.Write(rifx.DataSize + 0x34);
output.EndianType = EndianFormat.BigEndian;
output.Write(RIFFFormat.WAVE);
// Generate the 'fmt ' chunk
output.Write(0x666D7420); // 'fmt '
output.EndianType = EndianFormat.LittleEndian;
output.Write(0x20);
output.Write((short)0x165); // WAVE_FORMAT_XMA
output.Write((short)16); // 16 bits per sample
output.Write((short)0); // encode options **
output.Write((short)0); // largest skip
output.Write((short)1); // # streams
output.Write((byte)0); // loops
output.Write((byte)3); // encoder version
output.Write(0); // bytes per second **
output.Write(rifx.SampleRate); // sample rate
output.Write(0); // loop start
output.Write(0); // loop end
output.Write((byte)0); // subframe loop data
output.Write((byte)rifx.ChannelCount); // channels
output.Write((short)0x0002);// channel mask
// 'data' chunk
output.EndianType = EndianFormat.BigEndian;
output.Write(0x64617461); // 'data'
output.EndianType = EndianFormat.LittleEndian;
output.Write(rifx.DataSize);
// Copy the data chunk contents from the original RIFX
reader.SeekTo(offset + rifx.DataOffset);
StreamUtil.Copy(reader, output, rifx.DataSize);
// END ADAPTED CODE
}
// Convert it with towav
RunProgramSilently("Helpers/towav.exe", "\"" + Path.GetFileName(tempFile) + "\"", Path.GetDirectoryName(tempFile));
// Move the WAV to the destination path
if (File.Exists(outPath))
File.Delete(outPath);
File.Move(Path.ChangeExtension(tempFile, "wav"), outPath);
}
finally
{
// Delete the temporary XMA file
if (File.Exists(tempFile))
File.Delete(tempFile);
}
}
