mobile/android/base/gfx/BufferedCairoImage.java@b8a032363ba2 (annotated)
mobile/android/base/gfx/BufferedCairoImage.java
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | package org.mozilla.gecko.gfx; |
| michael@0 | 7 | |
| michael@0 | 8 | import org.mozilla.gecko.mozglue.DirectBufferAllocator; |
| michael@0 | 9 | |
| michael@0 | 10 | import android.graphics.Bitmap; |
| michael@0 | 11 | import android.util.Log; |
| michael@0 | 12 | |
| michael@0 | 13 | import java.nio.ByteBuffer; |
| michael@0 | 14 | |
| michael@0 | 15 | /** A Cairo image that simply saves a buffer of pixel data. */ |
| michael@0 | 16 | public class BufferedCairoImage extends CairoImage { |
| michael@0 | 17 | private ByteBuffer mBuffer; |
| michael@0 | 18 | private IntSize mSize; |
| michael@0 | 19 | private int mFormat; |
| michael@0 | 20 | |
| michael@0 | 21 | private static String LOGTAG = "GeckoBufferedCairoImage"; |
| michael@0 | 22 | |
| michael@0 | 23 | /** Creates a buffered Cairo image from a byte buffer. */ |
| michael@0 | 24 | public BufferedCairoImage(ByteBuffer inBuffer, int inWidth, int inHeight, int inFormat) { |
| michael@0 | 25 | setBuffer(inBuffer, inWidth, inHeight, inFormat); |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | /** Creates a buffered Cairo image from an Android bitmap. */ |
| michael@0 | 29 | public BufferedCairoImage(Bitmap bitmap) { |
| michael@0 | 30 | setBitmap(bitmap); |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | private synchronized void freeBuffer() { |
| michael@0 | 34 | mBuffer = DirectBufferAllocator.free(mBuffer); |
| michael@0 | 35 | } |
| michael@0 | 36 | |
| michael@0 | 37 | @Override |
| michael@0 | 38 | public void destroy() { |
| michael@0 | 39 | try { |
| michael@0 | 40 | freeBuffer(); |
| michael@0 | 41 | } catch (Exception ex) { |
| michael@0 | 42 | Log.e(LOGTAG, "error clearing buffer: ", ex); |
| michael@0 | 43 | } |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | @Override |
| michael@0 | 47 | public ByteBuffer getBuffer() { return mBuffer; } |
| michael@0 | 48 | @Override |
| michael@0 | 49 | public IntSize getSize() { return mSize; } |
| michael@0 | 50 | @Override |
| michael@0 | 51 | public int getFormat() { return mFormat; } |
| michael@0 | 52 | |
| michael@0 | 53 | |
| michael@0 | 54 | public void setBuffer(ByteBuffer buffer, int width, int height, int format) { |
| michael@0 | 55 | freeBuffer(); |
| michael@0 | 56 | mBuffer = buffer; |
| michael@0 | 57 | mSize = new IntSize(width, height); |
| michael@0 | 58 | mFormat = format; |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | public void setBitmap(Bitmap bitmap) { |
| michael@0 | 62 | mFormat = CairoUtils.bitmapConfigToCairoFormat(bitmap.getConfig()); |
| michael@0 | 63 | mSize = new IntSize(bitmap.getWidth(), bitmap.getHeight()); |
| michael@0 | 64 | |
| michael@0 | 65 | int bpp = CairoUtils.bitsPerPixelForCairoFormat(mFormat); |
| michael@0 | 66 | mBuffer = DirectBufferAllocator.allocate(mSize.getArea() * bpp); |
| michael@0 | 67 | bitmap.copyPixelsToBuffer(mBuffer.asIntBuffer()); |
| michael@0 | 68 | } |
| michael@0 | 69 | } |
