public Bitmap getNextFrame()
{
if (staticXmlReader != null)
{
while (staticXmlReader.Read())
{
if (staticXmlReader.IsStartElement())
{
if (staticXmlReader.Name == VideoXMLConstants.VFRAMES_FRAME_TAG)
{
int length;
bool isNumeric = int.TryParse(staticXmlReader.GetAttribute(VideoXMLConstants.VFRAMES_ATTRIBUTE_LENGTH), out length);
staticXmlReader.Read();
if (isNumeric)
{
byte[] serializedBitmap = new byte[length];
staticXmlReader.ReadContentAsBinHex(serializedBitmap, 0, length);
return(BitmapUtilities.byteArrayToBitmap(serializedBitmap));
}
else
{
return(null);
}
}
}
}
}
return(null);
}
private void writeFrame(Bitmap frameToWrite)
{
frameCount++;
if (initialFrame)
{
initialFrame = false;
isOpen = true;
frameToWrite.Save(filePath + VideoFileWriter.VIDEO_PREVIEW_FILENAME, BitmapUtilities.pngCodecInfo, BitmapUtilities.encodingParameters);
}
videoFrameSearializer.writeFrame(BitmapUtilities.bitmapToByteArrayFromMemoryStream(frameToWrite), frameCount - 1);
}
public static Bitmap loadFrameAtIndex(String filePath, int index)
{
if (File.Exists(filePath + CamConstants.VIDEO_FRAMES_FILENAME))
{
using (XmlReader xmlReader = XmlReader.Create(new FileStream(filePath + CamConstants.VIDEO_FRAMES_FILENAME, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))) {
while (xmlReader.Read())
{
if (xmlReader.IsStartElement())
{
if (xmlReader.Name == VideoXMLConstants.VFRAMES_FRAME_TAG)
{
if (xmlReader.GetAttribute(VideoXMLConstants.VFRAMES_ATTRIBUTE_ID) == index.ToString())
{
int length;
bool isNumeric = int.TryParse(xmlReader.GetAttribute(VideoXMLConstants.VFRAMES_ATTRIBUTE_LENGTH), out length);
xmlReader.Read();
if (isNumeric)
{
byte[] serializedBitmap = new byte[length];
xmlReader.ReadContentAsBinHex(serializedBitmap, 0, length);
return(BitmapUtilities.byteArrayToBitmap(serializedBitmap));
}
else
{
return(null);
}
}
}
}
}
}
}
return(null);
}
