1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.rs.imagejb;
18
19import java.lang.Math;
20
21import android.renderscript.*;
22import android.util.Log;
23
24public class Histogram extends TestBase {
25    private ScriptC_histogram mScript;
26    private ScriptIntrinsicHistogram mHist;
27    private Allocation mSum;
28    private Allocation mSums;
29    private boolean mUseIntrinsic;
30
31    public Histogram(boolean useIntrisic) {
32        mUseIntrinsic = useIntrisic;
33    }
34
35
36    public void createTest(android.content.res.Resources res) {
37        mScript = new ScriptC_histogram(mRS);
38        mHist = ScriptIntrinsicHistogram.create(mRS, Element.U8_4(mRS));
39
40        int w = mInPixelsAllocation.getType().getX();
41        int h = mInPixelsAllocation.getType().getY();
42        int step = 8;
43        int steps = (h + step - 1) / step;
44
45        mScript.set_gWidth(w);
46        mScript.set_gHeight(h);
47        mScript.set_gStep(step);
48        mScript.set_gSteps(steps);
49
50        Type.Builder tb = new Type.Builder(mRS, Element.I32(mRS));
51        tb.setX(256).setY(steps);
52        Type t = tb.create();
53        mSums = Allocation.createTyped(mRS, t);
54        mSum = Allocation.createSized(mRS, Element.I32(mRS), 256);
55
56        mScript.set_gSums(mSums);
57        mScript.set_gSum(mSum);
58        mScript.set_gSrc(mInPixelsAllocation);
59        mScript.set_gDest(mOutPixelsAllocation);
60
61        mScript.forEach_clear(mOutPixelsAllocation);
62    }
63
64
65
66    public void runTest() {
67        Script.LaunchOptions lo = new Script.LaunchOptions();
68
69        if (mUseIntrinsic) {
70            mHist.setOutput(mSum);
71            mHist.forEach_Dot(mInPixelsAllocation);
72        } else {
73            lo.setX(0, mSums.getType().getY());
74            mScript.forEach_pass1(lo);
75            mScript.forEach_pass2(mSum);
76        }
77
78        mScript.invoke_rescale();
79        lo.setX(0, 1024);
80        mScript.forEach_draw(mOutPixelsAllocation, lo);
81    }
82
83}
84