public MemoryStream GetFrameByOffset(VideoFileIndex oVideoFileIndex)
{
MemoryStream ImageStream = new MemoryStream();
mVideoFile.Seek(oVideoFileIndex.FramePosition, SeekOrigin.Begin);
byte[] imageArray = new byte[oVideoFileIndex.FrameLength];
mVideoFile.Read(imageArray, 0,oVideoFileIndex.FrameLength);
ImageStream.Write(imageArray, 0, imageArray.Length);
return ImageStream;
}
public void OpenFile(string FilePath)
{
mDataFrameList.Clear();
mVideoFile = System.IO.File.OpenRead(FilePath);
byte[] NumberData = new byte[8];
if (mVideoFile.Length == 0) throw new BadImageFormatException();
while (mVideoFile.Position < mVideoFile.Length)
{
VideoFileIndex oVideoFileIndex = new VideoFileIndex();
mVideoFile.Read(NumberData, (int)0, 4);
oVideoFileIndex.FrameTickCount = BitConverter.ToInt32(NumberData, 0); // save tick count.
mVideoFile.Read(NumberData, 0, 8);
oVideoFileIndex.FrameLength = BitConverter.ToInt32(NumberData, 0); // save image size
oVideoFileIndex.FramePosition = (int) mVideoFile.Position;
//ImageArray = new byte[oVideoFileIndex.FrameLength];
mVideoFile.Seek(oVideoFileIndex.FrameLength, SeekOrigin.Current);
mDataFrameList.Add(oVideoFileIndex);
}
// VideoFileIndex v = GetFrameOffsetByTickCount(100);
}