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Diffstat (limited to '')
-rw-r--r-- | android/source/src/java/org/mozilla/gecko/gfx/CairoUtils.java | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/android/source/src/java/org/mozilla/gecko/gfx/CairoUtils.java b/android/source/src/java/org/mozilla/gecko/gfx/CairoUtils.java new file mode 100644 index 000000000..e0db6530d --- /dev/null +++ b/android/source/src/java/org/mozilla/gecko/gfx/CairoUtils.java @@ -0,0 +1,51 @@ +/* -*- 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"); + } + } +} + |