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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.gfx;
import android.graphics.Bitmap;
import android.util.Log;
import org.libreoffice.kit.DirectBufferAllocator;
import java.nio.ByteBuffer;
/**
* A Cairo image that simply saves a buffer of pixel data.
*/
public class BufferedCairoImage extends CairoImage {
private static String LOGTAG = "GeckoBufferedCairoImage";
private ByteBuffer mBuffer;
private IntSize mSize;
private int mFormat;
/**
* Creates a buffered Cairo image from a byte buffer.
*/
public BufferedCairoImage(ByteBuffer inBuffer, int inWidth, int inHeight, int inFormat) {
setBuffer(inBuffer, inWidth, inHeight, inFormat);
}
/**
* Creates a buffered Cairo image from an Android bitmap.
*/
public BufferedCairoImage(Bitmap bitmap) {
setBitmap(bitmap);
}
private synchronized void freeBuffer() {
mBuffer = DirectBufferAllocator.free(mBuffer);
}
@Override
public void destroy() {
try {
freeBuffer();
} catch (Exception ex) {
Log.e(LOGTAG, "error clearing buffer: ", ex);
}
}
@Override
public ByteBuffer getBuffer() {
return mBuffer;
}
@Override
public IntSize getSize() {
return mSize;
}
@Override
public int getFormat() {
return mFormat;
}
public void setBuffer(ByteBuffer buffer, int width, int height, int format) {
freeBuffer();
mBuffer = buffer;
mSize = new IntSize(width, height);
mFormat = format;
}
public void setBitmap(Bitmap bitmap) {
mFormat = CairoUtils.bitmapConfigToCairoFormat(bitmap.getConfig());
mSize = new IntSize(bitmap.getWidth(), bitmap.getHeight());
int bpp = CairoUtils.bitsPerPixelForCairoFormat(mFormat) / 8;
mBuffer = DirectBufferAllocator.allocate(mSize.getArea() * bpp);
bitmap.copyPixelsToBuffer(mBuffer.asIntBuffer());
}
}
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