async void HandleFrameArrivedAsync(PerceptionInfraredFrameReader sender,
PerceptionInfraredFrameArrivedEventArgs args)
{
// We move the whole thing to the dispatcher thread for now because we need to
// get back to the writeable bitmap and that's got affinity. We could probably
// do a lot better here.
await this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.High,
() => {
this.HandleFrameArrivedDispatcherThread(args);
}
);
}
unsafe void HandleFrameArrivedDispatcherThread(PerceptionInfraredFrameArrivedEventArgs args)
{
using (var frame = args.TryOpenFrame())
{
if (frame != null)
{
unsafe
{
using (var bufferSource = frame.VideoFrame.SoftwareBitmap.LockBuffer(BitmapBufferAccessMode.Read))
using (var sourceReference = bufferSource.CreateReference())
{
var sourceByteAccess = sourceReference as IMemoryBufferByteAccess;
var pSourceBits = (byte *)null;
uint capacity = 0;
sourceByteAccess.GetBuffer(out pSourceBits, out capacity);
var destByteAccess = bitmap_bg.PixelBuffer as IBufferByteAccess;
var pDestBits = (byte *)null;
destByteAccess.Buffer(out pDestBits);
var bufferStart = pSourceBits;
for (int i = 0; i < (capacity); i++)
{
byte val = (byte)(*pSourceBits);
*pDestBits++ = val;
*pDestBits++ = val;
*pDestBits++ = val;
*pDestBits++ = 0xFF;
pSourceBits += 1; // sizeof(Uint16)
}
}
}
bitmap_bg.Invalidate();
if (bitmap_bg == bitmap1)
{
bitmap_bg = bitmap2;
bitmap_fg = bitmap1;
}
else
{
bitmap_bg = bitmap1;
bitmap_fg = bitmap2;
}
}
}
}
private void ProcessInfraredFrame(/*PerceptionInfraredFrameReader sender, */ PerceptionInfraredFrameArrivedEventArgs args)
{
using (var frame = args.TryOpenFrame())
{
if (frame != null)
{
using (var videoFrame = frame.VideoFrame)
{
if (videoFrame != null)
{
var IsGetIllumination = videoFrame.ExtendedProperties.TryGetValue(KnownPerceptionInfraredFrameSourceProperties.ActiveIlluminationEnabled, out illuminationEnabled);
ProcessVideoFrame(videoFrame, Convert.ToBoolean(illuminationEnabled));
}
}
}
}
}
unsafe void HandleFrameArrivedDispatcherThread(PerceptionInfraredFrameArrivedEventArgs args)
{
using (var frame = args.TryOpenFrame()) {
if (frame != null)
{
unsafe
{
using (var bufferSource = frame.VideoFrame.SoftwareBitmap.LockBuffer(BitmapBufferAccessMode.Read))
using (var sourceReference = bufferSource.CreateReference()) {
var sourceByteAccess = sourceReference as IMemoryBufferByteAccess;
var pSourceBits = (byte *)null;
uint capacity = 0;
sourceByteAccess.GetBuffer(out pSourceBits, out capacity);
var destByteAccess = bitmap.PixelBuffer as IBufferByteAccess;
var pDestBits = (byte *)null;
destByteAccess.Buffer(out pDestBits);
var bufferStart = pSourceBits;
for (int i = 0; i < (capacity / 2); i++)
{
// scaling RGB value of 0...Uint16.Max into 0...byte.MaxValue which
// probably isn't the best idea but it's a start.
float pct = (float)(*(UInt16 *)pSourceBits / (float)UInt16.MaxValue);
byte val = (byte)(pct * byte.MaxValue);
*pDestBits++ = val;
*pDestBits++ = val;
*pDestBits++ = val;
*pDestBits++ = 0xFF;
pSourceBits += 2; //sizeof(Uint16)
}
}
}
this.bitmap.Invalidate();
}
}
}
private void InfraredReader_FrameArrived(PerceptionInfraredFrameReader sender, PerceptionInfraredFrameArrivedEventArgs args)
{
ProcessInfraredFrame(/*sender,*/ args);
}
