Document ColorMatrix intrinsic and add helpers (8fd5853c) · Commits · e / os / android_frameworks_base

graphics/java/android/renderscript/Matrix4f.java

+28 −0

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		@@ -112,6 +112,34 @@ public class Matrix4f {
		System.arraycopy(src.getArray(), 0, mMat, 0, mMat.length);
		}

		/**
		* Sets the values of the matrix to those of the parameter
		*
		* @param src matrix to load the values from
		* @hide
		*/
		public void load(Matrix3f src) {
		mMat[0] = src.mMat[0];
		mMat[1] = src.mMat[1];
		mMat[2] = src.mMat[2];
		mMat[3] = 0;

		mMat[4] = src.mMat[3];
		mMat[5] = src.mMat[4];
		mMat[6] = src.mMat[5];
		mMat[7] = 0;

		mMat[8] = src.mMat[6];
		mMat[9] = src.mMat[7];
		mMat[10] = src.mMat[8];
		mMat[11] = 0;

		mMat[12] = 0;
		mMat[13] = 0;
		mMat[14] = 0;
		mMat[15] = 1;
		}

		/**
		* Sets current values to be a rotation matrix of certain angle
		* about a given axis

graphics/java/android/renderscript/ScriptIntrinsicColorMatrix.java

+89 −5

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		@@ -39,8 +39,7 @@ public class ScriptIntrinsicColorMatrix extends ScriptIntrinsic {
		}

		/**
		* Supported elements types are float, float4, uchar, uchar4
		*
		* Supported elements types are uchar4
		*
		* @param rs
		* @param e
		@@ -53,13 +52,98 @@ public class ScriptIntrinsicColorMatrix extends ScriptIntrinsic {

		}

		public void setColorMatrix(Matrix4f m) {
		mMatrix.load(m);
		private void setMatrix() {
		FieldPacker fp = new FieldPacker(16*4);
		fp.addMatrix(m);
		fp.addMatrix(mMatrix);
		setVar(0, fp);
		}

		/**
		* Set the color matrix which will be applied to each cell of the image.
		*
		* @param m The 4x4 matrix to set.
		*/
		public void setColorMatrix(Matrix4f m) {
		mMatrix.load(m);
		setMatrix();
		}

		/**
		* Set the color matrix which will be applied to each cell of the image.
		* This will set the alpha channel to be a copy.
		*
		* @param m The 3x3 matrix to set.
		*/
		public void setColorMatrix(Matrix3f m) {
		mMatrix.load(m);
		setMatrix();
		}

		/**
		* Set a color matrix to convert from RGB to luminace. The alpha channel
		* will be a copy.
		*
		*/
		public void setGreyscale() {
		mMatrix.loadIdentity();
		mMatrix.set(0, 0, 0.299f);
		mMatrix.set(1, 0, 0.587f);
		mMatrix.set(2, 0, 0.114f);
		mMatrix.set(0, 1, 0.299f);
		mMatrix.set(1, 1, 0.587f);
		mMatrix.set(2, 1, 0.114f);
		mMatrix.set(0, 2, 0.299f);
		mMatrix.set(1, 2, 0.587f);
		mMatrix.set(2, 2, 0.114f);
		setMatrix();
		}

		/**
		* Set the matrix to convert from YUV to RGB with a direct copy of the 4th
		* channel.
		*
		*/
		public void setYUVtoRGB() {
		mMatrix.loadIdentity();
		mMatrix.set(0, 0, 1.f);
		mMatrix.set(1, 0, 0.f);
		mMatrix.set(2, 0, 1.13983f);
		mMatrix.set(0, 1, 1.f);
		mMatrix.set(1, 1, -0.39465f);
		mMatrix.set(2, 1, -0.5806f);
		mMatrix.set(0, 2, 1.f);
		mMatrix.set(1, 2, 2.03211f);
		mMatrix.set(2, 2, 0.f);
		setMatrix();
		}

		/**
		* Set the matrix to convert from RGB to YUV with a direct copy of the 4th
		* channel.
		*
		*/
		public void setRGBtoYUV() {
		mMatrix.loadIdentity();
		mMatrix.set(0, 0, 0.299f);
		mMatrix.set(1, 0, 0.587f);
		mMatrix.set(2, 0, 0.114f);
		mMatrix.set(0, 1, -0.14713f);
		mMatrix.set(1, 1, -0.28886f);
		mMatrix.set(2, 1, 0.436f);
		mMatrix.set(0, 2, 0.615f);
		mMatrix.set(1, 2, -0.51499f);
		mMatrix.set(2, 2, -0.10001f);
		setMatrix();
		}


		/**
		* Invoke the kernel and apply the matrix to each cell of ain and copy to
		* aout.
		*
		* @param ain Input allocation
		* @param aout Output allocation
		*/
		public void forEach(Allocation ain, Allocation aout) {
		forEach(0, ain, aout, null);
		}

graphics/java/android/renderscript/ScriptIntrinsicYuvToRGB.java

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		/*
		* Copyright (C) 2008 The Android Open Source Project
		* Copyright (C) 2012 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.

tests/RenderScriptTests/ImageProcessing/res/drawable-nodpi/city.png

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tests/RenderScriptTests/ImageProcessing/res/drawable-nodpi/img1600x1067.jpg

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