private void FlushPage(bool isLastPage)
{
if (_pageBuffOffset == 0) return;
if (isLastPage) _pageBuff[5] |= 0x04;
uint crc = OggCRC.Calculate(_pageBuff, 0, _pageBuffOffset);
General.CopyBytes(_pageBuff, 22, BitConverterLE.GetBytes(crc));
_fs.Write(_pageBuff, 0, _pageBuffOffset);
_pageBuffOffset = 0;
}
private void WriteSpeexHeaderPacket()
{
var data = new byte[80];
General.CopyBytes(data, 0, General.StringToAscii("Speex ")); // speex_string
General.CopyBytes(data, 8, General.StringToAscii("unknown")); // speex_version
data[28] = 1; // speex_version_id
data[32] = 80; // header_size
General.CopyBytes(data, 36, BitConverterLE.GetBytes(_sampleRate)); // rate
data[40] = 1; // mode (e.g. narrowband, wideband)
data[44] = 4; // mode_bitstream_version
data[48] = 1; // nb_channels
General.CopyBytes(data, 52, BitConverterLE.GetBytes(unchecked((uint)-1))); // bitrate
General.CopyBytes(data, 56, BitConverterLE.GetBytes(_samplesPerFrame)); // frame_size
data[60] = 0; // vbr
data[64] = 1; // frames_per_packet
AddPacket(data, 0, false);
}
private void WriteToPage(ulong data)
{
WriteToPage(BitConverterLE.GetBytes(data), 0, 8);
}
private void WriteToPage(uint data)
{
WriteToPage(BitConverterLE.GetBytes(data), 0, 4);
}
