const bool UseParser = true; // Have Mp3Parser parse the stream and submit frames to the OS.
public Mp3StreamHandler(PesStreamParameters parameters)
: base(parameters, new Mp3FrameHeader(), new Mp3Configurator(parameters.MediaStreamMetadata , parameters.StreamType.Description), MinimumPacketSize)
{
if (UseParser)
Parser = new Mp3Parser(parameters.PesPacketPool, AudioConfigurator.Configure, NextHandler);
}
public override void ProcessData(byte[] buffer, int offset, int length)
{
Debug.Assert(length > 0);
Debug.Assert(offset + length <= buffer.Length);
if (this._skip == 0 && this._index == 0 && 0 == this._startIndex)
{
int?id3Length = Mp3Parser.GetId3Length(buffer, offset, length);
if (id3Length.HasValue)
{
this._skip = id3Length.Value + 10;
Debug.WriteLine("Mp3Parser.ProcessData() ID3 detected, length {0}", (object)this._skip);
}
}
if (this._skip > 0)
{
if (this._skip >= length)
{
this._skip -= length;
return;
}
offset += this._skip;
length -= this._skip;
this._skip = 0;
}
int num1 = offset + length;
this.EnsureBufferSpace(128);
int sourceIndex = offset;
label_32:
while (sourceIndex < num1)
{
int num2 = this._index - this._startIndex;
if (num2 < 4)
{
byte num3 = buffer[sourceIndex++];
while (0 != num2)
{
if (1 == num2)
{
if (224 == (224 & (int)num3))
{
this._packet.Buffer[this._index++] = (byte)(int)num3;
goto label_31;
}
else
{
this._index = this._startIndex;
num2 = 0;
++this._badBytes;
}
}
else if (2 == num2)
{
this._packet.Buffer[this._index++] = (byte)(int)num3;
goto label_31;
}
else if (3 == num2)
{
this._packet.Buffer[this._index++] = (byte)(int)num3;
bool verbose = !this._isConfigured && this._hasSeenValidFrames && 0 == this._badBytes;
if (!this._frameHeader.Parse(this._packet.Buffer, this._startIndex, this._index - this._startIndex, verbose))
{
this.SkipInvalidFrameHeader();
goto label_32;
}
else
{
Debug.Assert(this._frameHeader.FrameLength > 4);
if (verbose)
{
this._configurationHandler(this._frameHeader);
this._isConfigured = true;
}
this.EnsureBufferSpace(this._frameHeader.FrameLength - 4);
goto label_31;
}
}
else
{
goto label_31;
}
}
if ((int)byte.MaxValue == (int)num3)
{
this._packet.Buffer[this._index++] = (byte)(int)byte.MaxValue;
}
else
{
++this._badBytes;
}
}
else
{
int val2 = this._frameHeader.FrameLength - (this._index - this._startIndex);
int length1 = Math.Min(num1 - sourceIndex, val2);
Debug.Assert(length1 > 0);
Array.Copy((Array)buffer, sourceIndex, (Array)this._packet.Buffer, this._index, length1);
this._index += length1;
sourceIndex += length1;
if (this._index - this._startIndex == this._frameHeader.FrameLength)
{
this.SubmitFrame();
}
}
label_31 :;
}
}
