public EncodingInfo Read(Stream raf)
{
//Read the infos--------------------------------------------------------
if (raf.Length == 0)
{
//Empty File
throw new CannotReadException("Error: File empty");
}
raf.Seek(0, SeekOrigin.Begin);
//FLAC Header string
byte[] b = new byte[4];
raf.Read(b, 0, b.Length);
string flac = new string(System.Text.Encoding.ASCII.GetChars(b));
if (flac != "fLaC")
{
throw new CannotReadException("fLaC Header not found");
}
MetadataBlockDataStreamInfo mbdsi = null;
bool isLastBlock = false;
while (!isLastBlock)
{
b = new byte[4];
raf.Read(b, 0, b.Length);
MetadataBlockHeader mbh = new MetadataBlockHeader(b);
if (mbh.BlockType == MetadataBlockHeader.BlockTypes.StreamInfo)
{
b = new byte[mbh.DataLength];
raf.Read(b, 0, b.Length);
mbdsi = new MetadataBlockDataStreamInfo(b);
if (!mbdsi.Valid)
{
throw new CannotReadException("FLAC StreamInfo not valid");
}
break;
}
raf.Seek(raf.Position + mbh.DataLength, SeekOrigin.Begin);
isLastBlock = mbh.IsLastBlock;
mbh = null; //Free memory
}
EncodingInfo info = new EncodingInfo();
info.Duration = new TimeSpan(mbdsi.Length * TimeSpan.TicksPerSecond);
info.ChannelNumber = mbdsi.ChannelNumber;
info.SamplingRate = mbdsi.SamplingRate;
info.EncodingType = mbdsi.EncodingType;
info.ExtraEncodingInfos = "";
info.Bitrate = ComputeBitrate(mbdsi.Length, raf.Length);
return(info);
}
public EncodingInfo Read(Stream raf)
{
//Read the infos--------------------------------------------------------
if (raf.Length == 0) {
//Empty File
throw new CannotReadException("Error: File empty");
}
raf.Seek(0, SeekOrigin.Begin);
//FLAC Header string
byte[] b = new byte[4];
raf.Read(b, 0, b.Length);
string flac = new string(System.Text.Encoding.ASCII.GetChars(b));
if (flac != "fLaC") {
throw new CannotReadException("fLaC Header not found");
}
MetadataBlockDataStreamInfo mbdsi = null;
bool isLastBlock = false;
while (!isLastBlock) {
b = new byte[4];
raf.Read(b, 0, b.Length);
MetadataBlockHeader mbh = new MetadataBlockHeader(b);
if (mbh.BlockType == (int) MetadataBlockHeader.BlockTypes.StreamInfo) {
b = new byte[mbh.DataLength];
raf.Read(b, 0, b.Length);
mbdsi = new MetadataBlockDataStreamInfo(b);
if (!mbdsi.Valid) {
throw new CannotReadException("FLAC StreamInfo not valid");
}
break;
}
raf.Seek(raf.Position + mbh.DataLength, SeekOrigin.Begin);
isLastBlock = mbh.IsLastBlock;
mbh = null; //Free memory
}
EncodingInfo info = new EncodingInfo();
info.Length = mbdsi.Length;
info.ChannelNumber = mbdsi.ChannelNumber;
info.SamplingRate = mbdsi.SamplingRate;
info.EncodingType = mbdsi.EncodingType;
info.ExtraEncodingInfos = "";
info.Bitrate = ComputeBitrate(mbdsi.Length, raf.Length);
return info;
}
