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initial commit of media shit

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louis 2020-02-18 18:44:58 -05:00
commit 8c0a5e3aa7
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usm_extract/src/SofdecStream.cs Normal file
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using System;
using System.IO;
using VGMToolbox.util;
namespace vgm_usm.extract
{
public class SofdecStream : Mpeg1Stream
{
new public const string DefaultVideoExtension = ".m2v";
public const string AdxAudioExtension = ".adx";
public const string AixAudioExtension = ".aix";
public const string Ac3AudioExtension = ".ac3";
public static readonly byte[] AixSignatureBytes = new byte[] { 0x41, 0x49, 0x58, 0x46 };
public static readonly byte[] Ac3SignatureBytes = new byte[] { 0x0B, 0x77 };
public SofdecStream(string path): base(path)
{
this.FileExtensionAudio = AdxAudioExtension;
this.FileExtensionVideo = DefaultVideoExtension;
}
protected override string GetAudioFileExtension(Stream readStream, long currentOffset)
{
string fileExtension;
byte[] checkBytes, checkBytesAc3;
int headerSize = this.GetAudioPacketHeaderSize(readStream, currentOffset);
checkBytes = ParseFile.ParseSimpleOffset(readStream, (currentOffset + 6 + headerSize), 4);
if (ParseFile.CompareSegment(checkBytes, 0, AixSignatureBytes))
{
fileExtension = AixAudioExtension;
}
else if (checkBytes[0] == 0x80)
{
fileExtension = AdxAudioExtension;
}
else
{
checkBytesAc3 = ParseFile.ParseSimpleOffset(readStream, (currentOffset + 6 + headerSize), 2);
if (ParseFile.CompareSegment(checkBytesAc3, 0, Ac3SignatureBytes))
{
fileExtension = Ac3AudioExtension;
}
else
{
fileExtension = ".bin";
}
}
return fileExtension;
}
}
}