| /* |
| * 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"); |
| } |
| } |