private byte GetVBRFrameOffset(FrameData Frame)
{
if (Frame.VersionID == MpegVersion.Version1)
{
if (Frame.ModeID != MpegChannel.Mono)
{
return 0x24;
}
return 0x15;
}
if (Frame.ModeID != MpegChannel.Mono)
{
return 0x15;
}
return 13;
}
private ushort GetSampleRate(FrameData Frame)
{
return MpegAudio.MPEG_SAMPLE_RATE[(int) Frame.VersionID][(int) Frame.SampleRateID];
}
private byte GetPadding(FrameData Frame)
{
if (Frame.PaddingBit)
{
if (Frame.LayerID == MpegLayer.LayerI)
{
return 4;
}
return 1;
}
return 0;
}
private ushort GetFrameLength(FrameData frame)
{
ushort num2 = this.GetCoefficient(frame);
ushort num3 = this.GetBitRate(frame);
ushort num4 = this.GetSampleRate(frame);
ushort num5 = this.GetPadding(frame);
return (ushort) ((((num2 * num3) * 0x3e8) / num4) + num5);
}
private byte GetCoefficient(FrameData Frame)
{
if (Frame.VersionID == MpegVersion.Version1)
{
if (Frame.LayerID == MpegLayer.LayerI)
{
return 0x30;
}
return 0x90;
}
if (Frame.LayerID == MpegLayer.LayerI)
{
return 0x18;
}
if (Frame.LayerID == MpegLayer.LayerII)
{
return 0x90;
}
return 0x48;
}
private ushort GetBitRate(FrameData Frame)
{
return MpegAudio.BitrateTable[(int) Frame.VersionID][((int) Frame.LayerID) - 1][Frame.BitRateID - 1];
}