Automatic sources dropoff on 2020-06-10 18:32:38.095721
The change is generated with prebuilt drop tool.
Change-Id: I24cbf6ba6db262a1ae1445db1427a08fee35b3b4
diff --git a/androidx/renderscript/ScriptIntrinsicHistogram.java b/androidx/renderscript/ScriptIntrinsicHistogram.java
new file mode 100644
index 0000000..3437f2c
--- /dev/null
+++ b/androidx/renderscript/ScriptIntrinsicHistogram.java
@@ -0,0 +1,232 @@
+/*
+ * Copyright (C) 2015 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.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.renderscript;
+
+import android.util.Log;
+
+/**
+ * Intrinsic Histogram filter.
+ *
+ *
+ **/
+public class ScriptIntrinsicHistogram extends ScriptIntrinsic {
+ private Allocation mOut;
+ // API level for the intrinsic
+ private static final int INTRINSIC_API_LEVEL = 19;
+
+ protected ScriptIntrinsicHistogram(long id, RenderScript rs) {
+ super(id, rs);
+ }
+
+ /**
+ * Create an intrinsic for calculating the histogram of an uchar
+ * or uchar4 image.
+ *
+ * Supported elements types are
+ * {@link Element#U8_4}, {@link Element#U8_3},
+ * {@link Element#U8_2}, {@link Element#U8}
+ *
+ * @param rs The RenderScript context
+ * @param e Element type for inputs
+ *
+ * @return ScriptIntrinsicHistogram
+ */
+ public static ScriptIntrinsicHistogram create(RenderScript rs, Element e) {
+ if ((!e.isCompatible(Element.U8_4(rs))) &&
+ (!e.isCompatible(Element.U8_3(rs))) &&
+ (!e.isCompatible(Element.U8_2(rs))) &&
+ (!e.isCompatible(Element.U8(rs)))) {
+ throw new RSIllegalArgumentException("Unsupported element type.");
+ }
+ long id;
+ boolean mUseIncSupp = rs.isUseNative() &&
+ android.os.Build.VERSION.SDK_INT < INTRINSIC_API_LEVEL;
+
+ id = rs.nScriptIntrinsicCreate(9, e.getID(rs), mUseIncSupp);
+
+ ScriptIntrinsicHistogram si = new ScriptIntrinsicHistogram(id, rs);
+ si.setIncSupp(mUseIncSupp);
+ return si;
+ }
+
+ /**
+ * Process an input buffer and place the histogram into the
+ * output allocation. The output allocation may be a narrower
+ * vector size than the input. In this case the vector size of
+ * the output is used to determine how many of the input
+ * channels are used in the computation. This is useful if you
+ * have an RGBA input buffer but only want the histogram for
+ * RGB.
+ *
+ * 1D and 2D input allocations are supported.
+ *
+ * @param ain The input image
+ */
+ public void forEach(Allocation ain) {
+ forEach(ain, null);
+ }
+
+ /**
+ * Process an input buffer and place the histogram into the
+ * output allocation. The output allocation may be a narrower
+ * vector size than the input. In this case the vector size of
+ * the output is used to determine how many of the input
+ * channels are used in the computation. This is useful if you
+ * have an RGBA input buffer but only want the histogram for
+ * RGB.
+ *
+ * 1D and 2D input allocations are supported.
+ *
+ * @param ain The input image
+ * @param opt LaunchOptions for clipping
+ */
+ public void forEach(Allocation ain, Script.LaunchOptions opt) {
+ if (ain.getType().getElement().getVectorSize() <
+ mOut.getType().getElement().getVectorSize()) {
+
+ throw new RSIllegalArgumentException(
+ "Input vector size must be >= output vector size.");
+ }
+ if (!ain.getType().getElement().isCompatible(Element.U8(mRS)) &&
+ !ain.getType().getElement().isCompatible(Element.U8_2(mRS)) &&
+ !ain.getType().getElement().isCompatible(Element.U8_3(mRS)) &&
+ !ain.getType().getElement().isCompatible(Element.U8_4(mRS))) {
+ throw new RSIllegalArgumentException("Input type must be U8, U8_1, U8_2 or U8_4.");
+ }
+
+ forEach(0, ain, null, null, opt);
+ }
+
+
+
+ /**
+ * Set the coefficients used for the RGBA to Luminocity
+ * calculation. The default is {0.299f, 0.587f, 0.114f, 0.f}.
+ *
+ * Coefficients must be >= 0 and sum to 1.0 or less.
+ *
+ * @param r Red coefficient
+ * @param g Green coefficient
+ * @param b Blue coefficient
+ * @param a Alpha coefficient
+ */
+ public void setDotCoefficients(float r, float g, float b, float a) {
+ if ((r < 0.f) || (g < 0.f) || (b < 0.f) || (a < 0.f)) {
+ throw new RSIllegalArgumentException("Coefficient may not be negative.");
+ }
+ if ((r + g + b + a) > 1.f) {
+ throw new RSIllegalArgumentException("Sum of coefficients must be 1.0 or less.");
+ }
+
+ FieldPacker fp = new FieldPacker(16);
+ fp.addF32(r);
+ fp.addF32(g);
+ fp.addF32(b);
+ fp.addF32(a);
+ setVar(0, fp);
+ }
+
+ /**
+ * Set the output of the histogram. 32 bit integer types are
+ * supported.
+ *
+ * @param aout The output allocation
+ */
+ public void setOutput(Allocation aout) {
+ mOut = aout;
+ if (mOut.getType().getElement() != Element.U32(mRS) &&
+ mOut.getType().getElement() != Element.U32_2(mRS) &&
+ mOut.getType().getElement() != Element.U32_3(mRS) &&
+ mOut.getType().getElement() != Element.U32_4(mRS) &&
+ mOut.getType().getElement() != Element.I32(mRS) &&
+ mOut.getType().getElement() != Element.I32_2(mRS) &&
+ mOut.getType().getElement() != Element.I32_3(mRS) &&
+ mOut.getType().getElement() != Element.I32_4(mRS)) {
+
+ throw new RSIllegalArgumentException("Output type must be U32 or I32.");
+ }
+ if ((mOut.getType().getX() != 256) ||
+ (mOut.getType().getY() != 0) ||
+ mOut.getType().hasMipmaps() ||
+ (mOut.getType().getYuv() != 0)) {
+
+ throw new RSIllegalArgumentException("Output must be 1D, 256 elements.");
+ }
+ setVar(1, aout);
+ }
+
+
+ /**
+ * Process an input buffer and place the histogram into the
+ * output allocation. The dot product of the input channel and
+ * the coefficients from 'setDotCoefficients' are used to
+ * calculate the output values.
+ *
+ * 1D and 2D input allocations are supported.
+ *
+ * @param ain The input image
+ */
+ public void forEach_Dot(Allocation ain) {
+ forEach_Dot(ain, null);
+ }
+
+ /**
+ * Process an input buffer and place the histogram into the
+ * output allocation. The dot product of the input channel and
+ * the coefficients from 'setDotCoefficients' are used to
+ * calculate the output values.
+ *
+ * 1D and 2D input allocations are supported.
+ *
+ * @param ain The input image
+ * @param opt LaunchOptions for clipping
+ */
+ public void forEach_Dot(Allocation ain, Script.LaunchOptions opt) {
+ if (mOut.getType().getElement().getVectorSize() != 1) {
+ throw new RSIllegalArgumentException("Output vector size must be one.");
+ }
+ if (!ain.getType().getElement().isCompatible(Element.U8(mRS)) &&
+ !ain.getType().getElement().isCompatible(Element.U8_2(mRS)) &&
+ !ain.getType().getElement().isCompatible(Element.U8_3(mRS)) &&
+ !ain.getType().getElement().isCompatible(Element.U8_4(mRS))) {
+ throw new RSIllegalArgumentException("Input type must be U8, U8_1, U8_2 or U8_4.");
+ }
+
+ forEach(1, ain, null, null, opt);
+ }
+
+
+
+ /**
+ * Get a KernelID for this intrinsic kernel.
+ *
+ * @return Script.KernelID The KernelID object.
+ */
+ public Script.KernelID getKernelID_Separate() {
+ return createKernelID(0, 3, null, null);
+ }
+
+ /**
+ * Get a FieldID for the input field of this intrinsic.
+ *
+ * @return Script.FieldID The FieldID object.
+ */
+ public Script.FieldID getFieldID_Input() {
+ return createFieldID(1, null);
+ }
+}
+
