39 lines
1.2 KiB
C#
39 lines
1.2 KiB
C#
using System;
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using System.IO;
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namespace vgm_usm.extract
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{
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public class Mpeg1Stream : MpegStream
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{
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public const string DefaultAudioExtension = ".mp2";
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public const string DefaultVideoExtension = ".m1v";
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public Mpeg1Stream(string path)
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: base(path)
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{
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this.FileExtensionAudio = DefaultAudioExtension;
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this.FileExtensionVideo = DefaultVideoExtension;
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base.BlockIdDictionary[BitConverter.ToUInt32(MpegStream.PacketStartBytes, 0)] = new BlockSizeStruct(PacketSizeType.Static, 0xC); // Pack Header
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}
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protected override int GetAudioPacketHeaderSize(Stream readStream, long currentOffset)
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{
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int paddingByteCount = 0;
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readStream.Position = currentOffset + 6;
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// skip stuffing bytes
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while (readStream.ReadByte() == 0xFF)
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{
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paddingByteCount++;
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}
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return paddingByteCount + 7;
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}
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protected override int GetVideoPacketHeaderSize(Stream readStream, long currentOffset)
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{
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return 0xC;
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}
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}
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}
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