1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/gfx/CairoUtils.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,51 @@
1.4 +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +package org.mozilla.gecko.gfx;
1.10 +
1.11 +import android.graphics.Bitmap;
1.12 +
1.13 +/**
1.14 + * Utility methods useful when displaying Cairo bitmaps using OpenGL ES.
1.15 + */
1.16 +public class CairoUtils {
1.17 + private CairoUtils() { /* Don't call me. */ }
1.18 +
1.19 + public static int bitsPerPixelForCairoFormat(int cairoFormat) {
1.20 + switch (cairoFormat) {
1.21 + case CairoImage.FORMAT_A1: return 1;
1.22 + case CairoImage.FORMAT_A8: return 8;
1.23 + case CairoImage.FORMAT_RGB16_565: return 16;
1.24 + case CairoImage.FORMAT_RGB24: return 24;
1.25 + case CairoImage.FORMAT_ARGB32: return 32;
1.26 + default:
1.27 + throw new RuntimeException("Unknown Cairo format");
1.28 + }
1.29 + }
1.30 +
1.31 + public static int bitmapConfigToCairoFormat(Bitmap.Config config) {
1.32 + if (config == null)
1.33 + return CairoImage.FORMAT_ARGB32; /* Droid Pro fix. */
1.34 +
1.35 + switch (config) {
1.36 + case ALPHA_8: return CairoImage.FORMAT_A8;
1.37 + case ARGB_4444: throw new RuntimeException("ARGB_444 unsupported");
1.38 + case ARGB_8888: return CairoImage.FORMAT_ARGB32;
1.39 + case RGB_565: return CairoImage.FORMAT_RGB16_565;
1.40 + default: throw new RuntimeException("Unknown Skia bitmap config");
1.41 + }
1.42 + }
1.43 +
1.44 + public static Bitmap.Config cairoFormatTobitmapConfig(int format) {
1.45 + switch (format) {
1.46 + case CairoImage.FORMAT_A8: return Bitmap.Config.ALPHA_8;
1.47 + case CairoImage.FORMAT_ARGB32: return Bitmap.Config.ARGB_8888;
1.48 + case CairoImage.FORMAT_RGB16_565: return Bitmap.Config.RGB_565;
1.49 + default:
1.50 + throw new RuntimeException("Unknown CairoImage format");
1.51 + }
1.52 + }
1.53 +}
1.54 +
