public void OnImageAvailable(ImageReader reader)
{
Image image = reader.AcquireLatestImage();
if (image == null)
{
return;
}
Image.Plane[] planes = image.GetPlanes();
int totalLength = 0;
for (int i = 0; i < planes.Length; i++)
{
Java.Nio.ByteBuffer buffer = planes[i].Buffer;
totalLength += buffer.Remaining();
}
if (_data == null || _data.Length != totalLength)
{
_data = new byte[totalLength];
}
int offset = 0;
for (int i = 0; i < planes.Length; i++)
{
Java.Nio.ByteBuffer buffer = planes[i].Buffer;
int length = buffer.Remaining();
buffer.Get(_data, offset, length);
offset += length;
}
if (_yuv420Converter == null)
{
_yuv420Converter = new YUV420Converter(_activity);
}
if (_bitmapSrcBuffer[_bitmapBufferIdx] == null || image.Width != (_bitmapSrcBuffer[_bitmapBufferIdx].Width) || (image.Height != _bitmapSrcBuffer[_bitmapBufferIdx].Height))
{
_bitmapSrcBuffer[_bitmapBufferIdx] = Bitmap.CreateBitmap(image.Width, image.Height, Bitmap.Config.Argb8888);
}
Bitmap bmpSrc = _bitmapSrcBuffer[_bitmapBufferIdx];
_yuv420Converter.YUV_420_888_toRGBIntrinsics(image.Width, image.Height, _data, bmpSrc);
using (Mat m = new Mat(bmpSrc.Height, bmpSrc.Width, DepthType.Cv8U, 4, bmpSrc.LockPixels(),
bmpSrc.Width * 4))
{
bmpSrc.UnlockPixels();
CvInvoke.CvtColor(m, _bgrMat, ColorConversion.Bgra2Bgr);
//Rotate 90 degree by transpose and flip
CvInvoke.Transpose(_bgrMat, _rotatedMat);
CvInvoke.Flip(_rotatedMat, _rotatedMat, FlipType.Horizontal);
//apply a simple invert filter
CvInvoke.BitwiseNot(_rotatedMat, _rotatedMat);
}
_activity.SetImage(_rotatedMat);
_bitmapBufferIdx = (_bitmapBufferIdx + 1) % _bitmapSrcBuffer.Length;
/*
* GCHandle dataHandle = GCHandle.Alloc(_data, GCHandleType.Pinned);
* using (Mat m = new Mat((image.Height << 1) + (image.Height >> 1), image.Width, DepthType.Cv8U, 1,
* dataHandle.AddrOfPinnedObject(), image.Width))
* {
* CvInvoke.CvtColor(m, _bgrMat, ColorConversion.Yuv420Sp2Bgr);
*
* if (_activity != null)
* _activity.SetImage(_bgrMat);
* }
* dataHandle.Free();
*/
//int bytesPerPixel = ImageFormat.GetBitsPerPixel(Android.Graphics.ImageFormatType.Yuv420888) / 8;
//int dataSize = width * height * bytesPerPixel;
/*
* byte[] rowData = new byte[planes[0].RowStride];
*
* for (int i = 0; i < planes.Length; i++)
* {
* buffer = planes[i].Buffer;
* rowStride = planes[i].RowStride;
* pixelStride = planes[i].PixelStride;
* int w = (i == 0) ? width : width / 2;
* int h = (i == 0) ? height : height / 2;
* for (int row = 0; row < h; row++)
* {
* if (pixelStride == bytesPerPixel)
* {
* int length = w * bytesPerPixel;
* buffer.Get(_data, offset, length);
*
* // Advance buffer the remainder of the row stride, unless on the last row.
* // Otherwise, this will throw an IllegalArgumentException because the buffer
* // doesn't include the last padding.
* if (h - row != 1)
* {
* buffer.Position(buffer.Position() + rowStride - length);
* }
* offset += length;
* }
* else
* {
*
* // On the last row only read the width of the image minus the pixel stride
* // plus one. Otherwise, this will throw a BufferUnderflowException because the
* // buffer doesn't include the last padding.
* if (h - row == 1)
* {
* buffer.Get(rowData, 0, width - pixelStride + 1);
* }
* else
* {
* buffer.Get(rowData, 0, rowStride);
* }
*
* for (int col = 0; col < w; col++)
* {
* _data[offset++] = rowData[col * pixelStride];
* }
* }
* }
* }*/
image.Close();
//image.Dispose();
}
public void OnImageAvailable(ImageReader reader)
{
Image image = reader.AcquireLatestImage();
if (image == null)
{
return;
}
Image.Plane[] planes = image.GetPlanes();
int totalLength = 0;
for (int i = 0; i < planes.Length; i++)
{
Java.Nio.ByteBuffer buffer = planes[i].Buffer;
totalLength += buffer.Remaining();
}
if (_data == null || _data.Length != totalLength)
{
_data = new byte[totalLength];
}
int offset = 0;
for (int i = 0; i < planes.Length; i++)
{
Java.Nio.ByteBuffer buffer = planes[i].Buffer;
int length = buffer.Remaining();
buffer.Get(_data, offset, length);
offset += length;
}
if (_yuv420Converter == null)
{
_yuv420Converter = new YUV420Converter(Android.App.Application.Context);
}
if (_bitmapSrcBuffer[_bitmapBufferIdx] == null || image.Width != (_bitmapSrcBuffer[_bitmapBufferIdx].Width) || (image.Height != _bitmapSrcBuffer[_bitmapBufferIdx].Height))
{
_bitmapSrcBuffer[_bitmapBufferIdx] = Bitmap.CreateBitmap(image.Width, image.Height, Bitmap.Config.Argb8888);
}
Bitmap bmpSrc = _bitmapSrcBuffer[_bitmapBufferIdx];
_yuv420Converter.YUV_420_888_toRGBIntrinsics(image.Width, image.Height, _data, bmpSrc);
using (Mat m = new Mat(bmpSrc.Height, bmpSrc.Width, DepthType.Cv8U, 4, bmpSrc.LockPixels(),
bmpSrc.Width * 4))
{
bmpSrc.UnlockPixels();
CvInvoke.CvtColor(m, _bgrMat, ColorConversion.Bgra2Bgr);
//Rotate 90 degree by transpose and flip
CvInvoke.Transpose(_bgrMat, _rotatedMat);
CvInvoke.Flip(_rotatedMat, _rotatedMat, FlipType.Horizontal);
//apply a simple invert filter
CvInvoke.BitwiseNot(_rotatedMat, _rotatedMat);
}
if (OnImageProcessed != null)
{
OnImageProcessed(reader, _rotatedMat);
}
_bitmapBufferIdx = (_bitmapBufferIdx + 1) % _bitmapSrcBuffer.Length;
image.Close();
//image.Dispose();
}
