private MpegEncoder GetVBREncoderID()
{
MpegEncoder encoder1 = MpegEncoder.Unknown;
string text1 = this.m_VBR.VendorID.Substring(0, 4);
if (text1 == VBRVendorID.LAME)
{
encoder1 = MpegEncoder.LAME;
}
if (text1 == VBRVendorID.GoGoNew)
{
encoder1 = MpegEncoder.GoGo;
}
if (text1 == VBRVendorID.GoGoOld)
{
encoder1 = MpegEncoder.GoGo;
}
if (((Encoding.ASCII.GetString(this.m_VBR.ID) == VBRHeaderID.Xing) && (text1 != VBRVendorID.LAME)) && ((text1 != VBRVendorID.GoGoNew) && (text1 != VBRVendorID.GoGoOld)))
{
encoder1 = MpegEncoder.Xing;
}
if (Encoding.ASCII.GetString(this.m_VBR.ID) == VBRHeaderID.FhG)
{
encoder1 = MpegEncoder.FhG;
}
if (text1 == VBRVendorID.LAME)
{
encoder1 = MpegEncoder.LAME;
}
return(encoder1);
}
/// <summary>
/// Returns encoder from a CBR info tag
/// </summary>
/// <returns>Encoder from a CBR info tag</returns>
private MpegEncoder GetCBREncoderID()
{
MpegEncoder result = MpegEncoder.FhG;
String shortVendor;
if (!String.IsNullOrEmpty(m_VendorID) && m_VendorID.Length >= 4)
{
shortVendor = m_VendorID.Substring(0, 4);
}
else
{
shortVendor = "";
}
// Guess CBR encoder and get ID
if (m_Frame.OriginalBit && m_Frame.ProtectionBit)
{
result = MpegEncoder.LAME;
}
if (GetBitRate(m_Frame) <= 160 && m_Frame.ModeID == MpegChannel.Stereo)
{
result = MpegEncoder.Blade;
}
if (m_Frame.CopyrightBit && m_Frame.OriginalBit && !m_Frame.ProtectionBit)
{
result = MpegEncoder.Xing;
}
if (m_Frame.Xing && m_Frame.OriginalBit)
{
result = MpegEncoder.Xing;
}
if (m_Frame.LayerID == MpegLayer.LayerII)
{
result = MpegEncoder.QDesign;
}
if (m_Frame.ModeID == MpegChannel.DualChannel && m_Frame.ProtectionBit)
{
result = MpegEncoder.Shine;
}
if (shortVendor == VBRVendorID.LAME)
{
result = MpegEncoder.LAME;
}
if (shortVendor == VBRVendorID.GoGoNew)
{
result = MpegEncoder.GoGo;
}
return(result);
}
private MpegEncoder GetEncoderID()
{
MpegEncoder encoder1 = MpegEncoder.Unknown;
if (!this.m_Frame.Found)
{
return(encoder1);
}
if (this.m_VBR.Found)
{
return(this.GetVBREncoderID());
}
return(this.GetCBREncoderID());
}
private MpegEncoder GetCBREncoderID()
{
string text1;
MpegEncoder encoder1 = MpegEncoder.FhG;
if (!string.IsNullOrEmpty(this.m_VendorID) && (this.m_VendorID.Length >= 4))
{
text1 = this.m_VendorID.Substring(0, 4);
}
else
{
text1 = "";
}
if (this.m_Frame.OriginalBit && this.m_Frame.ProtectionBit)
{
encoder1 = MpegEncoder.LAME;
}
if ((this.GetBitRate(this.m_Frame) <= 160) && (this.m_Frame.ModeID == MpegChannel.Stereo))
{
encoder1 = MpegEncoder.Blade;
}
if ((this.m_Frame.CopyrightBit && this.m_Frame.OriginalBit) && !this.m_Frame.ProtectionBit)
{
encoder1 = MpegEncoder.Xing;
}
if (this.m_Frame.Xing && this.m_Frame.OriginalBit)
{
encoder1 = MpegEncoder.Xing;
}
if (this.m_Frame.LayerID == MpegLayer.LayerII)
{
encoder1 = MpegEncoder.QDesign;
}
if ((this.m_Frame.ModeID == MpegChannel.DualChannel) && this.m_Frame.ProtectionBit)
{
encoder1 = MpegEncoder.Shine;
}
if (text1 == VBRVendorID.LAME)
{
encoder1 = MpegEncoder.LAME;
}
if (text1 == VBRVendorID.GoGoNew)
{
encoder1 = MpegEncoder.GoGo;
}
return(encoder1);
}
/// <summary>
/// Returns encoder
/// </summary>
/// <returns>Encoder</returns>
private MpegEncoder GetEncoderID()
{
MpegEncoder result = MpegEncoder.Unknown;
// Get guessed encoder ID
if (m_Frame.Found)
{
if (m_VBR.Found)
{
result = GetVBREncoderID();
}
else
{
result = GetCBREncoderID();
}
}
return(result);
}
/// <summary>
/// Returns encoder from a VBR info tag
/// </summary>
/// <returns>Encoder from a VBR info tag</returns>
private MpegEncoder GetVBREncoderID()
{
MpegEncoder result = MpegEncoder.Unknown;
String vbrVendor = m_VBR.VendorID.Substring(0, 4);
// Guess VBR encoder and get ID
if (vbrVendor == VBRVendorID.LAME)
{
result = MpegEncoder.LAME;
}
if (vbrVendor == VBRVendorID.GoGoNew)
{
result = MpegEncoder.GoGo;
}
if (vbrVendor == VBRVendorID.GoGoOld)
{
result = MpegEncoder.GoGo;
}
if (Encoding.ASCII.GetString(m_VBR.ID) == VBRHeaderID.Xing &&
vbrVendor != VBRVendorID.LAME &&
vbrVendor != VBRVendorID.GoGoNew &&
vbrVendor != VBRVendorID.GoGoOld)
{
result = MpegEncoder.Xing;
}
if (Encoding.ASCII.GetString(m_VBR.ID) == VBRHeaderID.FhG)
{
result = MpegEncoder.FhG;
}
if (vbrVendor == VBRVendorID.LAME)
{
result = MpegEncoder.LAME;
}
return(result);
}