The Tor Browser: build/mobile/robocop/PaintedSurface.java@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 package org.mozilla.gecko;

     7 import java.io.ByteArrayOutputStream;

     8 import java.io.File;

     9 import java.io.FileInputStream;

    10 import java.nio.MappedByteBuffer;

    11 import java.nio.channels.FileChannel;

    13 import android.graphics.Bitmap;

    14 import android.util.Base64;

    15 import android.util.Base64OutputStream;

    17 public class PaintedSurface {

    18     private String mFileName;

    19     private int mWidth;

    20     private int mHeight;

    21     private FileInputStream mPixelFile;

    22     private MappedByteBuffer mPixelBuffer;

    24     public PaintedSurface(String filename, int width, int height) {

    25         mFileName = filename;

    26         mWidth = width;

    27         mHeight = height;

    29         try {

    30             File f = new File(filename);

    31             int pixelSize = (int)f.length();

    33             mPixelFile = new FileInputStream(filename);

    34             mPixelBuffer = mPixelFile.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, pixelSize);

    35         } catch (java.io.FileNotFoundException e) {

    36             FennecNativeDriver.log(FennecNativeDriver.LogLevel.ERROR, e);

    37         } catch (java.io.IOException e) {

    38             FennecNativeDriver.log(FennecNativeDriver.LogLevel.ERROR, e);

    39         }

    40     }

    42     public final int getWidth() {

    43         return mWidth;

    44     }

    46     public final int getHeight() {

    47         return mHeight;

    48     }

    50     private int pixelAtIndex(int index) {

    51         int b1 = mPixelBuffer.get(index) & 0xFF;

    52         int b2 = mPixelBuffer.get(index + 1) & 0xFF;

    53         int b3 = mPixelBuffer.get(index + 2) & 0xFF;

    54         int b4 = mPixelBuffer.get(index + 3) & 0xFF;

    55         int value = (b1 << 24) + (b2 << 16) + (b3 << 8) + (b4 << 0);

    56         return value;

    57     }

    59     public final int getPixelAt(int x, int y) {

    60         if (mPixelBuffer == null) {

    61             throw new RoboCopException("Trying to access PaintedSurface with no active PixelBuffer");

    62         }

    64         if (x >= mWidth || x < 0) {

    65             throw new RoboCopException("Trying to access PaintedSurface with invalid x value");

    66         }

    68         if (y >= mHeight || y < 0) {

    69             throw new RoboCopException("Trying to access PaintedSurface with invalid y value");

    70         }

    72         // The rows are reversed so row 0 is at the end and we start with the last row.

    73         // This is why we do mHeight-y;

    74         int index = (x + ((mHeight - y - 1) * mWidth)) * 4;

    75         return pixelAtIndex(index);

    76     }

    78     public final String asDataUri() {

    79         try {

    80             Bitmap bm = Bitmap.createBitmap(mWidth, mHeight, Bitmap.Config.ARGB_8888);

    81             for (int y = 0; y < mHeight; y++) {

    82                 for (int x = 0; x < mWidth; x++) {

    83                     int index = (x + ((mHeight - y - 1) * mWidth)) * 4;

    84                     bm.setPixel(x, y, pixelAtIndex(index));

    85                 }

    86             }

    87             ByteArrayOutputStream out = new ByteArrayOutputStream();

    88             out.write("data:image/png;base64,".getBytes());

    89             Base64OutputStream b64 = new Base64OutputStream(out, Base64.NO_WRAP);

    90             bm.compress(Bitmap.CompressFormat.PNG, 100, b64);

    91             return new String(out.toByteArray());

    92         } catch (Exception e) {

    93             FennecNativeDriver.log(FennecNativeDriver.LogLevel.ERROR, e);

    94             throw new RoboCopException("Unable to convert surface to a PNG data:uri");

    95         }

    96     }

    98     public void close() {

    99         try {

   100             mPixelFile.close();

   101         } catch (Exception e) {

   102             FennecNativeDriver.log(FennecNativeDriver.LogLevel.DEBUG, e);

   103         }

   104     }

   105 }

The Tor Browser / file revision