/// <summary>Supports opening an Ogg Vorbis file</summary>
public OggFileReader(string oggFileName)
{
m_vorbisFile = new VorbisFile(oggFileName);
info = m_vorbisFile.getInfo();
// TODO: 8 is hard coded!! need to change it dynamically by reading tags
waveFormat = new WaveFormat(info[0].rate, 8, info[0].channels);
pcm_total = m_vorbisFile.pcm_total(-1);
timeSpan = m_vorbisFile.time_total(-1); // Timespan in seconds
}
private TagLib.File m_TagLibFile; // TagLibSharp file object
#endregion Fields
#region Constructors
/// <summary>
/// Constructor
/// </summary>
/// <param name="Filename">
/// A <see cref="System.String"/> containing the path to the Ogg Vorbis file this instance represents
/// </param>
public OggFile(string Filename)
{
// Check that the file exists
if (!(System.IO.File.Exists(Filename))) { throw new OggFileReadException("File not found", Filename); }
// Load the relevant objects
m_Filename = Filename;
try
{
m_CSVorbisFile = new VorbisFile(m_Filename);
}
catch (Exception ex)
{
throw new OggFileReadException("Unable to open file for data reading\n" + ex.Message, Filename);
}
try
{
m_TagLibFile = TagLib.File.Create(m_Filename);
}
catch (TagLib.UnsupportedFormatException ex)
{
throw new OggFileReadException("Unsupported format (not an ogg?)\n" + ex.Message, Filename);
}
catch (TagLib.CorruptFileException ex)
{
throw new OggFileCorruptException(ex.Message, Filename, "Tags");
}
// Populate some other info shizzle and do a little bit of sanity checking
m_Streams = m_CSVorbisFile.streams();
if (m_Streams<=0) { throw new OggFileReadException("File doesn't contain any logical bitstreams", Filename); }
// Assuming <0 is for whole file and >=0 is for specific logical bitstreams
m_Bitrate = m_CSVorbisFile.bitrate(-1);
m_LengthTime = (int)m_CSVorbisFile.time_total(-1);
// Figure out the ALFormat of the stream
m_Info = m_CSVorbisFile.getInfo(); // Get the info of the first stream, assuming all streams are the same? Dunno if this is safe tbh
if (m_Info[0] == null) { throw new OggFileReadException("Unable to determine Format{FileInfo.Channels} for first bitstream", Filename); }
if (m_TagLibFile.Properties.AudioBitrate==16) {
m_Format = (m_Info[0].channels)==1 ? ALFormat.Mono16 : ALFormat.Stereo16; // This looks like a fudge, but I've seen it a couple of times (what about the other formats I wonder?)
}
else
{
m_Format = (m_Info[0].channels)==1 ? ALFormat.Mono8 : ALFormat.Stereo8;
}
// A grab our first instance of the file so we're ready to play
m_CSVorbisFileInstance = m_CSVorbisFile.makeInstance();
}