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comparison: mobile/android/base/gfx/CairoUtils.java
mobile/android/base/gfx/CairoUtils.java
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| 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/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.gfx; | |
| 7 | |
| 8 import android.graphics.Bitmap; | |
| 9 | |
| 10 /** | |
| 11 * Utility methods useful when displaying Cairo bitmaps using OpenGL ES. | |
| 12 */ | |
| 13 public class CairoUtils { | |
| 14 private CairoUtils() { /* Don't call me. */ } | |
| 15 | |
| 16 public static int bitsPerPixelForCairoFormat(int cairoFormat) { | |
| 17 switch (cairoFormat) { | |
| 18 case CairoImage.FORMAT_A1: return 1; | |
| 19 case CairoImage.FORMAT_A8: return 8; | |
| 20 case CairoImage.FORMAT_RGB16_565: return 16; | |
| 21 case CairoImage.FORMAT_RGB24: return 24; | |
| 22 case CairoImage.FORMAT_ARGB32: return 32; | |
| 23 default: | |
| 24 throw new RuntimeException("Unknown Cairo format"); | |
| 25 } | |
| 26 } | |
| 27 | |
| 28 public static int bitmapConfigToCairoFormat(Bitmap.Config config) { | |
| 29 if (config == null) | |
| 30 return CairoImage.FORMAT_ARGB32; /* Droid Pro fix. */ | |
| 31 | |
| 32 switch (config) { | |
| 33 case ALPHA_8: return CairoImage.FORMAT_A8; | |
| 34 case ARGB_4444: throw new RuntimeException("ARGB_444 unsupported"); | |
| 35 case ARGB_8888: return CairoImage.FORMAT_ARGB32; | |
| 36 case RGB_565: return CairoImage.FORMAT_RGB16_565; | |
| 37 default: throw new RuntimeException("Unknown Skia bitmap config"); | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 public static Bitmap.Config cairoFormatTobitmapConfig(int format) { | |
| 42 switch (format) { | |
| 43 case CairoImage.FORMAT_A8: return Bitmap.Config.ALPHA_8; | |
| 44 case CairoImage.FORMAT_ARGB32: return Bitmap.Config.ARGB_8888; | |
| 45 case CairoImage.FORMAT_RGB16_565: return Bitmap.Config.RGB_565; | |
| 46 default: | |
| 47 throw new RuntimeException("Unknown CairoImage format"); | |
| 48 } | |
| 49 } | |
| 50 } | |
| 51 |
