private PendingFrame ProcessFrame()
{
_frameOrig = (FFmpeg.AVFrame)Marshal.PtrToStructure(_pFrameOrig, typeof(FFmpeg.AVFrame));
IntPtr pStream = Marshal.ReadIntPtr(_formatContext.streams, _videoStreamIndex * 4);
var stream = (FFmpeg.AVStream)Marshal.PtrToStructure(pStream, typeof(FFmpeg.AVStream));
_videoCodecContext = (FFmpeg.AVCodecContext)Marshal.PtrToStructure(stream.codec, typeof(FFmpeg.AVCodecContext));
if (_videoFrameFirstDTS == null)
{
_videoFrameFirstDTS = _frameOrig.pkt_dts;
}
if (_videoFieldDTSDuration == null)
{
_videoFieldDTSDuration = _frameOrig.pkt_duration / _videoCodecContext.ticks_per_frame;
}
var fieldList = new List <FrameField>();
//---------- Start YUV Image ----------
if (OutputYData || OutputYImage)
{
_scalerY.ProcessImage(_pFrameOrig, _frameOrig);
}
//---------- End YUV Image ----------
//---------- Start RGB Image ----------
if (OutputRGBImage && !OutputYImage)
{
_scalerRGB.ProcessImage(_pFrameOrig, _frameOrig);
}
//---------- End RGB Image ----------
for (int fieldIndex = 0; fieldIndex < _videoCodecContext.ticks_per_frame; fieldIndex++)
{
var field = new FrameField();
if (OutputYData || OutputYImage)
{
field.YData = _scalerY.GetYData(fieldIndex);
if (OutputYImage)
{
field.Image = _scalerY.GetImage(fieldIndex);
//field.Image.Save(@"D:\temp\image.png", System.Drawing.Imaging.ImageFormat.Png);
}
}
if (OutputRGBImage && !OutputYImage)
{
field.Image = _scalerRGB.GetImage(fieldIndex);
//field.Image.Save(@"D:\temp\image.png", System.Drawing.Imaging.ImageFormat.Png);
}
field.PTS = (_frameOrig.pkt_dts - _videoFrameFirstDTS.Value) + (fieldIndex * _videoFieldDTSDuration.Value);
field.Seconds = field.PTS * _videoCodecContext.pkt_timebase.num / (double)_videoCodecContext.pkt_timebase.den;
field.FieldIndex = fieldIndex;
field.FieldNumber = (int)(field.PTS / _videoFieldDTSDuration.Value);
field.FrameNumber = (int)(field.FieldNumber / _videoCodecContext.ticks_per_frame);
field.FilePosition = _frameOrig.pkt_pos;
field.AVFrame = _frameOrig;
fieldList.Add(field);
}
var frame = new PendingFrame();
frame.Fields = fieldList.ToArray();
return(frame);
}
