public void StreamUtils_LongConverters()
{
ulong longValue = 0x45976248;
byte[] byteValue = BitConverter.GetBytes(longValue);
Assert.AreEqual(longValue, StreamUtils.DecodeUInt64(byteValue));
byteValue = StreamUtils.EncodeBEUInt64(longValue);
Assert.AreEqual((long)longValue, StreamUtils.DecodeBEInt64(byteValue));
}
public static void FromStream(Stream source, MetaDataIO meta, ReadTagParams readTagParams)
{
string str;
byte[] data = new byte[256];
// Description
source.Read(data, 0, 256);
str = Utils.StripEndingZeroChars(Utils.Latin1Encoding.GetString(data).Trim());
if (str.Length > 0)
{
meta.SetMetaField("bext.description", str, readTagParams.ReadAllMetaFrames);
}
// Originator
source.Read(data, 0, 32);
str = Utils.StripEndingZeroChars(Utils.Latin1Encoding.GetString(data, 0, 32).Trim());
if (str.Length > 0)
{
meta.SetMetaField("bext.originator", str, readTagParams.ReadAllMetaFrames);
}
// OriginatorReference
source.Read(data, 0, 32);
str = Utils.StripEndingZeroChars(Utils.Latin1Encoding.GetString(data, 0, 32).Trim());
if (str.Length > 0)
{
meta.SetMetaField("bext.originatorReference", str, readTagParams.ReadAllMetaFrames);
}
// OriginationDate
source.Read(data, 0, 10);
str = Utils.StripEndingZeroChars(Utils.Latin1Encoding.GetString(data, 0, 10).Trim());
if (str.Length > 0)
{
meta.SetMetaField("bext.originationDate", str, readTagParams.ReadAllMetaFrames);
}
// OriginationTime
source.Read(data, 0, 8);
str = Utils.StripEndingZeroChars(Utils.Latin1Encoding.GetString(data, 0, 8).Trim());
if (str.Length > 0)
{
meta.SetMetaField("bext.originationTime", str, readTagParams.ReadAllMetaFrames);
}
// TimeReference
source.Read(data, 0, 8);
ulong timeReference = StreamUtils.DecodeUInt64(data);
meta.SetMetaField("bext.timeReference", timeReference.ToString(), readTagParams.ReadAllMetaFrames);
// BEXT version
source.Read(data, 0, 2);
int intData = StreamUtils.DecodeUInt16(data);
meta.SetMetaField("bext.version", intData.ToString(), readTagParams.ReadAllMetaFrames);
// UMID
source.Read(data, 0, 64);
str = "";
int usefulLength = 32; // "basic" UMID
if (data[12] > 19)
{
usefulLength = 64; // data[12] gives the size of remaining UMID
}
for (int i = 0; i < usefulLength; i++)
{
str = str + data[i].ToString("X2");
}
meta.SetMetaField("bext.UMID", str, readTagParams.ReadAllMetaFrames);
// LoudnessValue
source.Read(data, 0, 2);
intData = StreamUtils.DecodeInt16(data);
meta.SetMetaField("bext.loudnessValue", (intData / 100.0).ToString(), readTagParams.ReadAllMetaFrames);
// LoudnessRange
source.Read(data, 0, 2);
intData = StreamUtils.DecodeInt16(data);
meta.SetMetaField("bext.loudnessRange", (intData / 100.0).ToString(), readTagParams.ReadAllMetaFrames);
// MaxTruePeakLevel
source.Read(data, 0, 2);
intData = StreamUtils.DecodeInt16(data);
meta.SetMetaField("bext.maxTruePeakLevel", (intData / 100.0).ToString(), readTagParams.ReadAllMetaFrames);
// MaxMomentaryLoudness
source.Read(data, 0, 2);
intData = StreamUtils.DecodeInt16(data);
meta.SetMetaField("bext.maxMomentaryLoudness", (intData / 100.0).ToString(), readTagParams.ReadAllMetaFrames);
// MaxShortTermLoudness
source.Read(data, 0, 2);
intData = StreamUtils.DecodeInt16(data);
meta.SetMetaField("bext.maxShortTermLoudness", (intData / 100.0).ToString(), readTagParams.ReadAllMetaFrames);
// Reserved
source.Seek(180, SeekOrigin.Current);
// CodingHistory
long initialPos = source.Position;
if (StreamUtils.FindSequence(source, new byte[2] {
13, 10
} /* CR LF */))
{
long endPos = source.Position - 2;
source.Seek(initialPos, SeekOrigin.Begin);
if (data.Length < (int)(endPos - initialPos))
{
data = new byte[(int)(endPos - initialPos)];
}
source.Read(data, 0, (int)(endPos - initialPos));
str = Utils.StripEndingZeroChars(Utils.Latin1Encoding.GetString(data, 0, (int)(endPos - initialPos)).Trim());
if (str.Length > 0)
{
meta.SetMetaField("bext.codingHistory", str, readTagParams.ReadAllMetaFrames);
}
}
}
public void StreamUtils_Exceptions()
{
Assert.IsFalse(StreamUtils.ArrEqualsArr(new byte[1], new byte[2]));
Assert.IsFalse(StreamUtils.StringEqualsArr(".", new char[2]));
try
{
StreamUtils.DecodeBEUInt16(new byte[1]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeUInt16(new byte[1]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeInt16(new byte[1]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeBEInt16(new byte[1]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeBEInt24(new byte[2]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeBEUInt24(new byte[2]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.EncodeBEUInt24(0x01FFFFFF);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeBEUInt32(new byte[3]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeUInt32(new byte[3]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeBEInt32(new byte[3]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeInt32(new byte[3]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeUInt64(new byte[7]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeBEInt64(new byte[7]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeSynchSafeInt(new byte[6]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.DecodeSynchSafeInt32(new byte[6]);
Assert.Fail();
}
catch { }
try
{
StreamUtils.EncodeSynchSafeInt(1, 0);
Assert.Fail();
}
catch { }
try
{
StreamUtils.EncodeSynchSafeInt(1, 6);
Assert.Fail();
}
catch { }
try
{
StreamUtils.ReadBits(new BinaryReader(new MemoryStream()), 0, 0);
Assert.Fail();
}
catch { }
try
{
StreamUtils.ReadBits(new BinaryReader(new MemoryStream()), 0, 33);
Assert.Fail();
}
catch { }
}
