private SoundEffect LoadSound(Stream stream, int length, string extension)
{
switch (extension)
{
case ".wav":
if (!stream.CanSeek)
{
stream = new MemoryStream(stream.ReadBytes(length));
}
return(SoundEffect.FromStream(stream));
case ".mp3":
using (var mp3Stream = new MP3Stream(stream))
using (var ms = new MemoryStream()) {
mp3Stream.CopyTo(ms);
return(new SoundEffect(ms.ToArray(), mp3Stream.Frequency, (AudioChannels)mp3Stream.ChannelCount));
}
case ".ogg":
using (var reader = new VorbisReader(stream, true)) {
var buffer = new byte[reader.TotalSamples * 2 * reader.Channels];
var floatBuf = new float[buffer.Length / 2];
reader.ReadSamples(floatBuf, 0, floatBuf.Length);
MusicStreamingOGG.Convert(floatBuf, buffer);
return(new SoundEffect(buffer, reader.SampleRate, (AudioChannels)reader.Channels));
}
}
throw new ResourceLoadException("Unknown sound extension " + extension);
}
private unsafe short[] Decode()
{
using (var output = new MemoryStream())
{
ushort[] endian_test = new ushort[] { 0x1234 };
fixed(ushort *ptr1 = endian_test)
{
byte *ptr2 = (byte *)ptr1;
if (*ptr2 != 0x34)
{
throw new NotSupportedException("MP3 decoding is only supported on little-endian processors");
}
}
using (var input = new MemoryStream(Body, false))
using (var mp3 = new MP3Stream(input))
{
mp3.CopyTo(output);
}
byte[] array = output.ToArray();
fixed(byte *ptr = array)
{
short *ptr16 = (short *)ptr;
short[] array16 = new short[array.Length / sizeof(short)];
Marshal.Copy((IntPtr)ptr16, array16, 0, array16.Length);
return(array16);
}
}
}
public T FromStream <T>(Stream stream) where T : class
{
if (typeof(T) != typeof(SoundEffect))
{
throw AssetLoadException.FromInvalidReader <MP3Reader, T>();
}
using var mp3Stream = new MP3Stream(stream);
using var ms = new MemoryStream();
mp3Stream.CopyTo(ms);
return(new SoundEffect(ms.ToArray(), mp3Stream.Frequency, (AudioChannels)mp3Stream.ChannelCount) as T);
}
