public ViewfinderProcessor(RenderScript rs, Size dimensions)
{
Type.Builder yuvTypeBuilder = new Type.Builder(rs, Element.YUV(rs));
yuvTypeBuilder.SetX(dimensions.Width);
yuvTypeBuilder.SetY(dimensions.Height);
yuvTypeBuilder.SetYuvFormat((int)ImageFormatType.Yuv420888);
mInputHdrAllocation = Allocation.CreateTyped(rs, yuvTypeBuilder.Create(),
AllocationUsage.IoInput | AllocationUsage.Script);
Type.Builder rgbTypeBuilder = new Type.Builder(rs, Element.RGBA_8888(rs));
rgbTypeBuilder.SetX(dimensions.Width);
rgbTypeBuilder.SetY(dimensions.Height);
mPrevAllocation = Allocation.CreateTyped(rs, rgbTypeBuilder.Create(),
AllocationUsage.Script);
mOutputAllocation = Allocation.CreateTyped(rs, rgbTypeBuilder.Create(),
AllocationUsage.IoOutput | AllocationUsage.Script);
mHdrYuvToRGBScript = ScriptIntrinsicYuvToRGB.Create(rs, Element.RGBA_8888(rs));
mHdrColorMatrixScript = ScriptIntrinsicColorMatrix.Create(rs);
mHdrColorMatrixScript.SetColorMatrix(new Matrix4f(new float[] { 0.5f, 0, 0, 0, 0, 0.5f, 0, 0, 0, 0, 0.5f, 0, 0, 0, 0, 0.5f }));
mHdrBlendScript = ScriptIntrinsicBlend.Create(rs, Element.RGBA_8888(rs));
mDimensions = dimensions;
mFrameCounter = 0;
SetRenderMode(ModeNormal);
}
public Bitmap blur(Bitmap bitmap, float radius, int repeat)
{
if (!IS_BLUR_SUPPORTED)
{
return(null);
}
if (radius > MAX_RADIUS)
{
radius = MAX_RADIUS;
}
int width = bitmap.Width;
int height = bitmap.Height;
// Create allocation type
Type bitmapType = new Type.Builder(rs, Element.RGBA_8888(rs))
.SetX(width)
.SetY(height)
.SetMipmaps(false) // We are using MipmapControl.MIPMAP_NONE
.Create();
// Create allocation
Allocation allocation = Allocation.CreateTyped(rs, bitmapType);
// Create blur script
ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs));
blurScript.SetRadius(radius);
// Copy data to allocation
allocation.CopyFrom(bitmap);
// set blur script input
blurScript.SetInput(allocation);
// invoke the script to blur
blurScript.ForEach(allocation);
// Repeat the blur for extra effect
for (int i = 0; i < repeat; i++)
{
blurScript.ForEach(allocation);
}
// copy data back to the bitmap
allocation.CopyTo(bitmap);
// release memory
allocation.Destroy();
blurScript.Destroy();
allocation = null;
blurScript = null;
return(bitmap);
}
