1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/build/mobile/robocop/PaintedSurface.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,105 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +package org.mozilla.gecko;
1.9 +
1.10 +import java.io.ByteArrayOutputStream;
1.11 +import java.io.File;
1.12 +import java.io.FileInputStream;
1.13 +import java.nio.MappedByteBuffer;
1.14 +import java.nio.channels.FileChannel;
1.15 +
1.16 +import android.graphics.Bitmap;
1.17 +import android.util.Base64;
1.18 +import android.util.Base64OutputStream;
1.19 +
1.20 +public class PaintedSurface {
1.21 + private String mFileName;
1.22 + private int mWidth;
1.23 + private int mHeight;
1.24 + private FileInputStream mPixelFile;
1.25 + private MappedByteBuffer mPixelBuffer;
1.26 +
1.27 + public PaintedSurface(String filename, int width, int height) {
1.28 + mFileName = filename;
1.29 + mWidth = width;
1.30 + mHeight = height;
1.31 +
1.32 + try {
1.33 + File f = new File(filename);
1.34 + int pixelSize = (int)f.length();
1.35 +
1.36 + mPixelFile = new FileInputStream(filename);
1.37 + mPixelBuffer = mPixelFile.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, pixelSize);
1.38 + } catch (java.io.FileNotFoundException e) {
1.39 + FennecNativeDriver.log(FennecNativeDriver.LogLevel.ERROR, e);
1.40 + } catch (java.io.IOException e) {
1.41 + FennecNativeDriver.log(FennecNativeDriver.LogLevel.ERROR, e);
1.42 + }
1.43 + }
1.44 +
1.45 + public final int getWidth() {
1.46 + return mWidth;
1.47 + }
1.48 +
1.49 + public final int getHeight() {
1.50 + return mHeight;
1.51 + }
1.52 +
1.53 + private int pixelAtIndex(int index) {
1.54 + int b1 = mPixelBuffer.get(index) & 0xFF;
1.55 + int b2 = mPixelBuffer.get(index + 1) & 0xFF;
1.56 + int b3 = mPixelBuffer.get(index + 2) & 0xFF;
1.57 + int b4 = mPixelBuffer.get(index + 3) & 0xFF;
1.58 + int value = (b1 << 24) + (b2 << 16) + (b3 << 8) + (b4 << 0);
1.59 + return value;
1.60 + }
1.61 +
1.62 + public final int getPixelAt(int x, int y) {
1.63 + if (mPixelBuffer == null) {
1.64 + throw new RoboCopException("Trying to access PaintedSurface with no active PixelBuffer");
1.65 + }
1.66 +
1.67 + if (x >= mWidth || x < 0) {
1.68 + throw new RoboCopException("Trying to access PaintedSurface with invalid x value");
1.69 + }
1.70 +
1.71 + if (y >= mHeight || y < 0) {
1.72 + throw new RoboCopException("Trying to access PaintedSurface with invalid y value");
1.73 + }
1.74 +
1.75 + // The rows are reversed so row 0 is at the end and we start with the last row.
1.76 + // This is why we do mHeight-y;
1.77 + int index = (x + ((mHeight - y - 1) * mWidth)) * 4;
1.78 + return pixelAtIndex(index);
1.79 + }
1.80 +
1.81 + public final String asDataUri() {
1.82 + try {
1.83 + Bitmap bm = Bitmap.createBitmap(mWidth, mHeight, Bitmap.Config.ARGB_8888);
1.84 + for (int y = 0; y < mHeight; y++) {
1.85 + for (int x = 0; x < mWidth; x++) {
1.86 + int index = (x + ((mHeight - y - 1) * mWidth)) * 4;
1.87 + bm.setPixel(x, y, pixelAtIndex(index));
1.88 + }
1.89 + }
1.90 + ByteArrayOutputStream out = new ByteArrayOutputStream();
1.91 + out.write("data:image/png;base64,".getBytes());
1.92 + Base64OutputStream b64 = new Base64OutputStream(out, Base64.NO_WRAP);
1.93 + bm.compress(Bitmap.CompressFormat.PNG, 100, b64);
1.94 + return new String(out.toByteArray());
1.95 + } catch (Exception e) {
1.96 + FennecNativeDriver.log(FennecNativeDriver.LogLevel.ERROR, e);
1.97 + throw new RoboCopException("Unable to convert surface to a PNG data:uri");
1.98 + }
1.99 + }
1.100 +
1.101 + public void close() {
1.102 + try {
1.103 + mPixelFile.close();
1.104 + } catch (Exception e) {
1.105 + FennecNativeDriver.log(FennecNativeDriver.LogLevel.DEBUG, e);
1.106 + }
1.107 + }
1.108 +}
