The Tor Browser: mobile/android/base/gfx/BufferedCairoImage.java@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-

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

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

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 package org.mozilla.gecko.gfx;

     8 import org.mozilla.gecko.mozglue.DirectBufferAllocator;

    10 import android.graphics.Bitmap;

    11 import android.util.Log;

    13 import java.nio.ByteBuffer;

    15 /** A Cairo image that simply saves a buffer of pixel data. */

    16 public class BufferedCairoImage extends CairoImage {

    17     private ByteBuffer mBuffer;

    18     private IntSize mSize;

    19     private int mFormat;

    21     private static String LOGTAG = "GeckoBufferedCairoImage";

    23     /** Creates a buffered Cairo image from a byte buffer. */

    24     public BufferedCairoImage(ByteBuffer inBuffer, int inWidth, int inHeight, int inFormat) {

    25         setBuffer(inBuffer, inWidth, inHeight, inFormat);

    26     }

    28     /** Creates a buffered Cairo image from an Android bitmap. */

    29     public BufferedCairoImage(Bitmap bitmap) {

    30         setBitmap(bitmap);

    31     }

    33     private synchronized void freeBuffer() {

    34         mBuffer = DirectBufferAllocator.free(mBuffer);

    35     }

    37     @Override

    38     public void destroy() {

    39         try {

    40             freeBuffer();

    41         } catch (Exception ex) {

    42             Log.e(LOGTAG, "error clearing buffer: ", ex);

    43         }

    44     }

    46     @Override

    47     public ByteBuffer getBuffer() { return mBuffer; }

    48     @Override

    49     public IntSize getSize() { return mSize; }

    50     @Override

    51     public int getFormat() { return mFormat; }

    54     public void setBuffer(ByteBuffer buffer, int width, int height, int format) {

    55         freeBuffer();

    56         mBuffer = buffer;

    57         mSize = new IntSize(width, height);

    58         mFormat = format;

    59     }

    61     public void setBitmap(Bitmap bitmap) {

    62         mFormat = CairoUtils.bitmapConfigToCairoFormat(bitmap.getConfig());

    63         mSize = new IntSize(bitmap.getWidth(), bitmap.getHeight());

    65         int bpp = CairoUtils.bitsPerPixelForCairoFormat(mFormat);

    66         mBuffer = DirectBufferAllocator.allocate(mSize.getArea() * bpp);

    67         bitmap.copyPixelsToBuffer(mBuffer.asIntBuffer());

    68     }

    69 }

The Tor Browser / file revision