/* * 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. * 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 com.android.rs.levels; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.os.Bundle; import android.renderscript.Matrix3f; import android.util.Log; import android.view.View; import android.widget.ImageView; import android.widget.SeekBar; import android.widget.TextView; public class LevelsDalvikActivity extends Activity implements SeekBar.OnSeekBarChangeListener { private final String TAG = "Img"; private Bitmap mBitmapIn; private Bitmap mBitmapOut; private float mInBlack = 0.0f; private SeekBar mInBlackSeekBar; private float mOutBlack = 0.0f; private SeekBar mOutBlackSeekBar; private float mInWhite = 255.0f; private SeekBar mInWhiteSeekBar; private float mOutWhite = 255.0f; private SeekBar mOutWhiteSeekBar; private float mGamma = 1.0f; private SeekBar mGammaSeekBar; private float mSaturation = 1.0f; private SeekBar mSaturationSeekBar; private TextView mBenchmarkResult; private ImageView mDisplayView; Matrix3f satMatrix = new Matrix3f(); float mInWMinInB; float mOutWMinOutB; float mOverInWMinInB; int mInPixels[]; int mOutPixels[]; private void setLevels() { mInWMinInB = mInWhite - mInBlack; mOutWMinOutB = mOutWhite - mOutBlack; mOverInWMinInB = 1.f / mInWMinInB; } private void setSaturation() { float rWeight = 0.299f; float gWeight = 0.587f; float bWeight = 0.114f; float oneMinusS = 1.0f - mSaturation; satMatrix.set(0, 0, oneMinusS * rWeight + mSaturation); satMatrix.set(0, 1, oneMinusS * rWeight); satMatrix.set(0, 2, oneMinusS * rWeight); satMatrix.set(1, 0, oneMinusS * gWeight); satMatrix.set(1, 1, oneMinusS * gWeight + mSaturation); satMatrix.set(1, 2, oneMinusS * gWeight); satMatrix.set(2, 0, oneMinusS * bWeight); satMatrix.set(2, 1, oneMinusS * bWeight); satMatrix.set(2, 2, oneMinusS * bWeight + mSaturation); } public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { if (fromUser) { if (seekBar == mInBlackSeekBar) { mInBlack = (float)progress; setLevels(); } else if (seekBar == mOutBlackSeekBar) { mOutBlack = (float)progress; setLevels(); } else if (seekBar == mInWhiteSeekBar) { mInWhite = (float)progress + 127.0f; setLevels(); } else if (seekBar == mOutWhiteSeekBar) { mOutWhite = (float)progress + 127.0f; setLevels(); } else if (seekBar == mGammaSeekBar) { mGamma = (float)progress/100.0f; mGamma = Math.max(mGamma, 0.1f); mGamma = 1.0f / mGamma; } else if (seekBar == mSaturationSeekBar) { mSaturation = (float)progress / 50.0f; setSaturation(); } filter(); mDisplayView.invalidate(); } } public void onStartTrackingTouch(SeekBar seekBar) { } public void onStopTrackingTouch(SeekBar seekBar) { } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mBitmapIn = loadBitmap(R.drawable.city); mBitmapOut = loadBitmap(R.drawable.city); mDisplayView = (ImageView) findViewById(R.id.display); mDisplayView.setImageBitmap(mBitmapOut); mInBlackSeekBar = (SeekBar)findViewById(R.id.inBlack); mInBlackSeekBar.setOnSeekBarChangeListener(this); mInBlackSeekBar.setMax(128); mInBlackSeekBar.setProgress(0); mOutBlackSeekBar = (SeekBar)findViewById(R.id.outBlack); mOutBlackSeekBar.setOnSeekBarChangeListener(this); mOutBlackSeekBar.setMax(128); mOutBlackSeekBar.setProgress(0); mInWhiteSeekBar = (SeekBar)findViewById(R.id.inWhite); mInWhiteSeekBar.setOnSeekBarChangeListener(this); mInWhiteSeekBar.setMax(128); mInWhiteSeekBar.setProgress(128); mOutWhiteSeekBar = (SeekBar)findViewById(R.id.outWhite); mOutWhiteSeekBar.setOnSeekBarChangeListener(this); mOutWhiteSeekBar.setMax(128); mOutWhiteSeekBar.setProgress(128); mGammaSeekBar = (SeekBar)findViewById(R.id.inGamma); mGammaSeekBar.setOnSeekBarChangeListener(this); mGammaSeekBar.setMax(150); mGammaSeekBar.setProgress(100); mSaturationSeekBar = (SeekBar)findViewById(R.id.inSaturation); mSaturationSeekBar.setOnSeekBarChangeListener(this); mSaturationSeekBar.setProgress(50); mBenchmarkResult = (TextView) findViewById(R.id.benchmarkText); mBenchmarkResult.setText("Result: not run"); mInPixels = new int[mBitmapIn.getHeight() * mBitmapIn.getWidth()]; mOutPixels = new int[mBitmapOut.getHeight() * mBitmapOut.getWidth()]; mBitmapIn.getPixels(mInPixels, 0, mBitmapIn.getWidth(), 0, 0, mBitmapIn.getWidth(), mBitmapIn.getHeight()); setLevels(); setSaturation(); filter(); } private Bitmap loadBitmap(int resource) { final BitmapFactory.Options options = new BitmapFactory.Options(); options.inPreferredConfig = Bitmap.Config.ARGB_8888; Bitmap b = BitmapFactory.decodeResource(getResources(), resource, options); Bitmap b2 = Bitmap.createBitmap(b.getWidth(), b.getHeight(), b.getConfig()); Canvas c = new Canvas(b2); c.drawBitmap(b, 0, 0, null); b.recycle(); return b2; } private void filter() { final float[] m = satMatrix.getArray(); for (int i=0; i < mInPixels.length; i++) { float r = (float)(mInPixels[i] & 0xff); float g = (float)((mInPixels[i] >> 8) & 0xff); float b = (float)((mInPixels[i] >> 16) & 0xff); float tr = r * m[0] + g * m[3] + b * m[6]; float tg = r * m[1] + g * m[4] + b * m[7]; float tb = r * m[2] + g * m[5] + b * m[8]; r = tr; g = tg; b = tb; if (r < 0.f) r = 0.f; if (r > 255.f) r = 255.f; if (g < 0.f) g = 0.f; if (g > 255.f) g = 255.f; if (b < 0.f) b = 0.f; if (b > 255.f) b = 255.f; r = (r - mInBlack) * mOverInWMinInB; g = (g - mInBlack) * mOverInWMinInB; b = (b - mInBlack) * mOverInWMinInB; if (mGamma != 1.0f) { r = (float)java.lang.Math.pow(r, mGamma); g = (float)java.lang.Math.pow(g, mGamma); b = (float)java.lang.Math.pow(b, mGamma); } r = (r * mOutWMinOutB) + mOutBlack; g = (g * mOutWMinOutB) + mOutBlack; b = (b * mOutWMinOutB) + mOutBlack; if (r < 0.f) r = 0.f; if (r > 255.f) r = 255.f; if (g < 0.f) g = 0.f; if (g > 255.f) g = 255.f; if (b < 0.f) b = 0.f; if (b > 255.f) b = 255.f; mOutPixels[i] = ((int)r) + (((int)g) << 8) + (((int)b) << 16) + (mInPixels[i] & 0xff000000); } mBitmapOut.setPixels(mOutPixels, 0, mBitmapOut.getWidth(), 0, 0, mBitmapOut.getWidth(), mBitmapOut.getHeight()); } public void benchmark(View v) { filter(); long t = java.lang.System.currentTimeMillis(); filter(); t = java.lang.System.currentTimeMillis() - t; mDisplayView.invalidate(); mBenchmarkResult.setText("Result: " + t + " ms"); } }