protected override bool ProcessFrame(MediaFrameReference frameReference)
{
// doc here https://msdn.microsoft.com/en-us/library/windows/apps/xaml/windows.media.capture.frames.videomediaframe.aspx
// says to dispose this softwarebitmap if you access it.
using (var bitmap = frameReference.VideoMediaFrame.SoftwareBitmap)
{
try
{
// I can go via this route or I can go via the IMemoryBufferByteAccess
// route but, either way, I seem to end up copying the bytes into
// another buffer which I don't really want to do :-(
if (this.buffer == null)
{
this.buffer = new byte[4 * bitmap.PixelHeight * bitmap.PixelWidth];
}
bitmap.CopyToBuffer(buffer.AsBuffer());
this.QrZxingResult = ZXingQRCodeDecoder.DecodeBufferToQRCode(
buffer, bitmap.PixelWidth, bitmap.PixelHeight, BitmapFormat.BGR32);
}
catch
{
}
}
return(this.QrZxingResult != null);
}
string ProcessFrame(SoftwareBitmap bitmap)
{
if (bitmap == null)
{
return(null);
}
try
{
if (this.buffer == null)
{
this.buffer = new byte[4 * bitmap.PixelHeight * bitmap.PixelWidth];
}
bitmap.CopyToBuffer(buffer.AsBuffer());
var zxingResult = ZXingQRCodeDecoder.DecodeBufferToQRCode(
buffer, bitmap.PixelWidth, bitmap.PixelHeight, BitmapFormat.BGR32);
if (zxingResult != null)
{
return(zxingResult.Text);
}
}
catch
{
}
return(null);
}
