public unsafe bool WriteOutput(MpegConverterSettings settings)
{
AudioFileDataHeader audioFileDataHeader = new AudioFileDataHeader
{
CompressionType = AudioFileDataCompressionType.EALayer3_EL31,
Channels = settings.NumberOfChannels == 1 ? AudioFileDataChannels.Mono : AudioFileDataChannels.Stereo,
SampleRate = (short)settings.SampleRate
};
Endian.ByteSwapInt16((ushort *)&audioFileDataHeader.SampleRate);
MpegFrameHeader frameHeader;
while ((frameHeader = ReadFrameHeader()) != null)
{
BitStreamWriter writer = new BitStreamWriter();
writer.Write(0, 8);
writer.Write((byte)frameHeader.Version, 2);
writer.Write(frameHeader.SampleRateIndex, 2);
writer.Write((byte)frameHeader.ChannelMode, 2);
writer.Write(frameHeader.ModeExtension, 2);
// writer.Write(); // TODO: is granule index == 1
// if granule index == 1 && version == mv_1
// for channels -> 4 bits scfsi
// for channels -> channel info 12 + 32 + x bits
// add up data size
// data size += 8 - size % 8
// data size /= 8
// if data size > 0
// copy data
}
return(true);
}
public unsafe bool WriteOutput(BlockInfo info, MpegConverterSettings settings)
{
AudioFileDataHeader audioFileDataHeader = new AudioFileDataHeader
{
CompressionType = AudioFileDataCompressionType.EALayer3_EL31,
Channels = settings.NumberOfChannels == 1 ? AudioFileDataChannels.Mono : AudioFileDataChannels.Stereo,
SampleRate = (short)settings.SampleRate,
NumberOfSamples = info.NumberOfSamples,
Size = info.Size
};
Endian.ByteSwapInt16((ushort *)&audioFileDataHeader.SampleRate);
Endian.ByteSwapInt32((uint *)&audioFileDataHeader.NumberOfSamples);
Endian.ByteSwapInt32((uint *)&audioFileDataHeader.Size);
if (settings.IsStreamed)
{
byte[] buffer = new byte[2];
_outputSnr.Write(buffer, 0, buffer.Length);
}
else
{
byte[] buffer = new byte[sizeof(AudioFileDataHeader)];
fixed(byte *pBuffer = &buffer[0])
{
MarshalUtil.CopyMemory((IntPtr)pBuffer, (IntPtr)(byte *)&audioFileDataHeader, sizeof(AudioFileDataHeader));
}
_outputSnr.Write(buffer, 0, buffer.Length);
}
MpegFrameHeader frameHeader;
while ((frameHeader = ReadFrameHeader()) != null)
{
BitStreamWriter writer = new BitStreamWriter();
writer.Write(0, 8);
writer.Write((byte)frameHeader.Version, 2);
writer.Write(frameHeader.SampleRateIndex, 2);
writer.Write((byte)frameHeader.ChannelMode, 2);
writer.Write(frameHeader.ModeExtension, 2);
// read frame data
writer.Write(); // TODO: is granule index == 1
// if granule index == 1 && version == mv_1
// for channels -> 4 bits scfsi
// for channels -> channel info 12 + 32 + x bits
// add up data size
// data size += 8 - size % 8
// data size /= 8
// if data size > 0
// copy data
}
return(true);
}
