public static void ExplodeCommonPic(string commonPicArc, string outDir, SplitCommonPicArgs opFlags)
{
string idxFileName = Path.ChangeExtension(commonPicArc, ".idx");
string pictureDir = null;
RefCounter completionCount = new RefCounter();
if ((opFlags & SplitCommonPicArgs.OutputPngPicture) != 0)
{
pictureDir = Path.Combine(outDir, "pictures");
Directory.CreateDirectory(pictureDir);
}
int numIdxEntries;
using (FileStream packFile = File.OpenRead(commonPicArc))
using (FileStream idxFile = File.OpenRead(idxFileName))
using (BinaryReader idxFileRead = new BinaryReader(idxFile))
{
long packFileSize = packFile.Length;
numIdxEntries = idxFileRead.ReadInt32();
int startPoint = idxFileRead.ReadInt32();
StringBuilder outFileName = new StringBuilder(outDir);
outFileName.Append(Path.DirectorySeparatorChar);
int fileNameStart = outFileName.Length;
for (int i = 0; i < numIdxEntries; ++i)
{
int endPoint = idxFileRead.ReadInt32();
int len = endPoint - startPoint;
byte[] buffer = new byte[len];
packFile.Position = startPoint;
packFile.Read(buffer, 0, len);
outFileName.Length = fileNameStart;
outFileName.Append(i.ToString() + ".gtmp");
AsyncWriteState aws = new AsyncWriteState();
FileStream outFile = new FileStream(outFileName.ToString(), FileMode.Create, FileAccess.ReadWrite, FileShare.None, UInt16.MaxValue, true);
aws.file = outFile;
aws.data = buffer;
aws.ops = opFlags;
aws.completionCount = completionCount;
if ((opFlags & SplitCommonPicArgs.OutputPngPicture) != 0)
{
aws.picFileName = Path.Combine(pictureDir, i.ToString() + ".gtmp.png");
}
outFile.BeginWrite(buffer, 0, len, new AsyncCallback(WriteComplete), aws);
startPoint = endPoint;
}
}
while (!completionCount.HasReached(numIdxEntries))
{
System.Threading.Thread.Sleep(100);
}
}
private static void DumpImage(object o)
{
AsyncWriteState aws = (AsyncWriteState)o;
using (FileStream fs = aws.file)
using (Bitmap bm = Parse(fs))
{
if (bm != null)
{
bm.Save(aws.picFileName, ImageFormat.Png);
}
}
aws.completionCount.Increment();
}
private static void WriteComplete(IAsyncResult res)
{
AsyncWriteState aws = (AsyncWriteState)res.AsyncState;
FileStream fs = aws.file;
fs.EndWrite(res);
if ((aws.ops & SplitCommonPicArgs.OutputPngPicture) != 0)
{
fs.Position = 0;
System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(DumpImage), aws);
}
else
{
fs.Dispose();
aws.completionCount.Increment();
}
}
