//private void Read(OggVorbisFile file, ReadStyle style)
private void Read(OggVorbisFile file)
{
// Get the identification header from the Ogg implementation.
ByteVector data = file.GetPacket(0);
int pos = 0;
if (data.Mid(pos, 7) != vorbisCommentHeaderId)
{
TagLibDebugger.Debug("Vorbis.Properties.Read() -- invalid Vorbis identification header");
return;
}
pos += 7;
vorbisVersion = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
channels = data[pos];
pos += 1;
sampleRate = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateMaximum = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateNominal = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateMinimum = (int)data.Mid(pos, 4).ToUInt(false);
// TODO: Later this should be only the "fast" mode.
bitrate = bitrateNominal;
// Find the length of the file. See http://wiki.xiph.org/VorbisStreamLength/
// for my notes on the topic.
OggPageHeader first = file.FirstPageHeader;
OggPageHeader last = file.LastPageHeader;
if (first != null && last != null)
{
long start = first.AbsoluteGranularPosition;
long end = last.AbsoluteGranularPosition;
if (start >= 0 && end >= 0 && sampleRate > 0)
duration = TimeSpan.FromSeconds(((double)(end - start) / (double)sampleRate));
else
TagLibDebugger.Debug("Vorbis.Properties.Read() -- Either the PCM " +
"values for the start or end of this file was " +
"incorrect or the sample rate is zero.");
}
else
TagLibDebugger.Debug("Vorbis.Properties.Read() -- Could not find valid first and last Ogg pages.");
}
public OggVorbisProperties(OggVorbisFile file, ReadStyle style) : base(style)
{
duration = TimeSpan.Zero;
//bitrate = 0;
//sample_rate = 0;
//channels = 0;
//vorbis_version = 0;
//bitrate_maximum = 0;
//bitrate_nominal = 0;
//bitrate_minimum = 0;
Read(file); // the old version of this had style as the second parameter
}
public OggVorbisProperties(OggVorbisFile file, ReadStyle style) : base(style)
{
duration = TimeSpan.Zero;
//bitrate = 0;
//sample_rate = 0;
//channels = 0;
//vorbis_version = 0;
//bitrate_maximum = 0;
//bitrate_nominal = 0;
//bitrate_minimum = 0;
Read(file); // the old version of this had style as the second parameter
}
//private void Read(OggVorbisFile file, ReadStyle style)
private void Read(OggVorbisFile file)
{
// Get the identification header from the Ogg implementation.
ByteVector data = file.GetPacket(0);
int pos = 0;
if (data.Mid(pos, 7) != vorbisCommentHeaderId)
{
TagLibDebugger.Debug("Vorbis.Properties.Read() -- invalid Vorbis identification header");
return;
}
pos += 7;
vorbisVersion = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
channels = data[pos];
pos += 1;
sampleRate = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateMaximum = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateNominal = (int)data.Mid(pos, 4).ToUInt(false);
pos += 4;
bitrateMinimum = (int)data.Mid(pos, 4).ToUInt(false);
// TODO: Later this should be only the "fast" mode.
bitrate = bitrateNominal;
// Find the length of the file. See http://wiki.xiph.org/VorbisStreamLength/
// for my notes on the topic.
OggPageHeader first = file.FirstPageHeader;
OggPageHeader last = file.LastPageHeader;
if (first != null && last != null)
{
long start = first.AbsoluteGranularPosition;
long end = last.AbsoluteGranularPosition;
if (start >= 0 && end >= 0 && sampleRate > 0)
{
duration = TimeSpan.FromSeconds(((double)(end - start) / (double)sampleRate));
}
else
{
TagLibDebugger.Debug("Vorbis.Properties.Read() -- Either the PCM " +
"values for the start or end of this file was " +
"incorrect or the sample rate is zero.");
}
}
else
{
TagLibDebugger.Debug("Vorbis.Properties.Read() -- Could not find valid first and last Ogg pages.");
}
}
public OggVorbisProperties(OggVorbisFile file) : this(file, ReadStyle.Average)
{
}
public OggVorbisProperties(OggVorbisFile file) : this(file, ReadStyle.Average)
{
}
