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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;
/**
* Utility methods useful when displaying Cairo bitmaps using OpenGL ES.
*/
public class CairoUtils {
private CairoUtils() { /* Don't call me. */ }
public static int bitsPerPixelForCairoFormat(int cairoFormat) {
switch (cairoFormat) {
case CairoImage.FORMAT_A1: return 1;
case CairoImage.FORMAT_A8: return 8;
case CairoImage.FORMAT_RGB16_565: return 16;
case CairoImage.FORMAT_RGB24: return 24;
case CairoImage.FORMAT_ARGB32: return 32;
default:
throw new RuntimeException("Unknown Cairo format");
}
}
public static int bitmapConfigToCairoFormat(Bitmap.Config config) {
if (config == null)
return CairoImage.FORMAT_ARGB32; /* Droid Pro fix. */
switch (config) {
case ALPHA_8: return CairoImage.FORMAT_A8;
case ARGB_4444: throw new RuntimeException("ARGB_444 unsupported");
case ARGB_8888: return CairoImage.FORMAT_ARGB32;
case RGB_565: return CairoImage.FORMAT_RGB16_565;
default: throw new RuntimeException("Unknown Skia bitmap config");
}
}
public static Bitmap.Config cairoFormatTobitmapConfig(int format) {
switch (format) {
case CairoImage.FORMAT_A8: return Bitmap.Config.ALPHA_8;
case CairoImage.FORMAT_ARGB32: return Bitmap.Config.ARGB_8888;
case CairoImage.FORMAT_RGB16_565: return Bitmap.Config.RGB_565;
default:
throw new RuntimeException("Unknown CairoImage format");
}
}
}
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