| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.graphics; |
| |
| import androidx.test.filters.SmallTest; |
| |
| import junit.framework.TestCase; |
| |
| public class BitmapTest extends TestCase { |
| |
| @SmallTest |
| public void testBasic() throws Exception { |
| Bitmap bm1 = Bitmap.createBitmap(100, 200, Bitmap.Config.ARGB_8888); |
| Bitmap bm2 = Bitmap.createBitmap(100, 200, Bitmap.Config.RGB_565); |
| Bitmap bm3 = Bitmap.createBitmap(100, 200, Bitmap.Config.ARGB_4444); |
| |
| assertTrue("mutability", bm1.isMutable()); |
| assertTrue("mutability", bm2.isMutable()); |
| assertTrue("mutability", bm3.isMutable()); |
| |
| assertEquals("width", 100, bm1.getWidth()); |
| assertEquals("width", 100, bm2.getWidth()); |
| assertEquals("width", 100, bm3.getWidth()); |
| |
| assertEquals("rowbytes", 400, bm1.getRowBytes()); |
| assertEquals("rowbytes", 200, bm2.getRowBytes()); |
| assertEquals("rowbytes", 400, bm3.getRowBytes()); |
| |
| assertEquals("byteCount", 80000, bm1.getByteCount()); |
| assertEquals("byteCount", 40000, bm2.getByteCount()); |
| assertEquals("byteCount", 80000, bm3.getByteCount()); |
| |
| assertEquals("height", 200, bm1.getHeight()); |
| assertEquals("height", 200, bm2.getHeight()); |
| assertEquals("height", 200, bm3.getHeight()); |
| |
| assertTrue("hasAlpha", bm1.hasAlpha()); |
| assertFalse("hasAlpha", bm2.hasAlpha()); |
| assertTrue("hasAlpha", bm3.hasAlpha()); |
| |
| assertTrue("getConfig", bm1.getConfig() == Bitmap.Config.ARGB_8888); |
| assertTrue("getConfig", bm2.getConfig() == Bitmap.Config.RGB_565); |
| assertTrue("getConfig", bm3.getConfig() == Bitmap.Config.ARGB_8888); |
| } |
| |
| @SmallTest |
| public void testMutability() throws Exception { |
| Bitmap bm1 = Bitmap.createBitmap(100, 200, Bitmap.Config.ARGB_8888); |
| Bitmap bm2 = Bitmap.createBitmap(new int[100 * 200], 100, 200, |
| Bitmap.Config.ARGB_8888); |
| |
| assertTrue("mutability", bm1.isMutable()); |
| assertFalse("mutability", bm2.isMutable()); |
| |
| bm1.eraseColor(0); |
| |
| try { |
| bm2.eraseColor(0); |
| fail("eraseColor should throw exception"); |
| } catch (IllegalStateException ex) { |
| // safe to catch and ignore this |
| } |
| } |
| |
| @SmallTest |
| public void testGetPixelsWithAlpha() throws Exception { |
| int[] colors = new int[100]; |
| for (int i = 0; i < 100; i++) { |
| colors[i] = (0xFF << 24) | (i << 16) | (i << 8) | i; |
| } |
| |
| Bitmap bm = Bitmap.createBitmap(colors, 10, 10, |
| Bitmap.Config.ARGB_8888); |
| |
| int[] pixels = new int[100]; |
| bm.getPixels(pixels, 0, 10, 0, 0, 10, 10); |
| for (int i = 0; i < 100; i++) { |
| int p = bm.getPixel(i % 10, i / 10); |
| assertEquals("getPixels", p, pixels[i]); |
| } |
| |
| for (int i = 0; i < 100; i++) { |
| int p = bm.getPixel(i % 10, i / 10); |
| assertEquals("getPixel", p, colors[i]); |
| assertEquals("pixel value", p, |
| ((0xFF << 24) | (i << 16) | (i << 8) | i)); |
| } |
| |
| } |
| |
| @SmallTest |
| public void testGetPixelsWithoutAlpha() throws Exception { |
| int[] colors = new int[100]; |
| for (int i = 0; i < 100; i++) { |
| colors[i] = (0xFF << 24) | (i << 16) | (i << 8) | i; |
| } |
| |
| Bitmap bm = Bitmap.createBitmap(colors, 10, 10, Bitmap.Config.RGB_565); |
| |
| int[] pixels = new int[100]; |
| bm.getPixels(pixels, 0, 10, 0, 0, 10, 10); |
| for (int i = 0; i < 100; i++) { |
| int p = bm.getPixel(i % 10, i / 10); |
| assertEquals("getPixels", p, pixels[i]); |
| } |
| } |
| |
| @SmallTest |
| public void testSetPixelsWithAlpha() throws Exception { |
| int[] colors = new int[100]; |
| for (int i = 0; i < 100; i++) { |
| colors[i] = (0xFF << 24) | (i << 16) | (i << 8) | i; |
| } |
| |
| Bitmap.Config config = Bitmap.Config.ARGB_8888; |
| Bitmap bm1 = Bitmap.createBitmap(colors, 10, 10, config); |
| Bitmap bm2 = Bitmap.createBitmap(10, 10, config); |
| |
| for (int i = 0; i < 100; i++) { |
| bm2.setPixel(i % 10, i / 10, colors[i]); |
| } |
| |
| for (int i = 0; i < 100; i++) { |
| assertEquals("setPixel", |
| bm1.getPixel(i % 10, i / 10), bm2.getPixel(i % 10, i / 10)); |
| } |
| |
| for (int i = 0; i < 100; i++) { |
| assertEquals("setPixel value", |
| bm1.getPixel(i % 10, i / 10), colors[i]); |
| } |
| } |
| |
| @SmallTest |
| public void testSetPixelsWithoutAlpha() throws Exception { |
| int[] colors = new int[100]; |
| for (int i = 0; i < 100; i++) { |
| colors[i] = (0xFF << 24) | (i << 16) | (i << 8) | i; |
| } |
| |
| Bitmap.Config config = Bitmap.Config.RGB_565; |
| Bitmap bm1 = Bitmap.createBitmap(colors, 10, 10, config); |
| Bitmap bm2 = Bitmap.createBitmap(10, 10, config); |
| |
| for (int i = 0; i < 100; i++) { |
| bm2.setPixel(i % 10, i / 10, colors[i]); |
| } |
| |
| for (int i = 0; i < 100; i++) { |
| assertEquals("setPixel", bm1.getPixel(i % 10, i / 10), |
| bm2.getPixel(i % 10, i / 10)); |
| } |
| } |
| |
| private static int computePrePostMul(int alpha, int comp) { |
| if (alpha == 0) { |
| return 0; |
| } |
| int premul = Math.round(alpha * comp / 255.f); |
| int unpre = Math.round(255.0f * premul / alpha); |
| return unpre; |
| } |
| |
| @SmallTest |
| public void testSetPixelsWithNonOpaqueAlpha() throws Exception { |
| int[] colors = new int[256]; |
| for (int i = 0; i < 256; i++) { |
| colors[i] = (i << 24) | (0xFF << 16) | (0x80 << 8) | 0; |
| } |
| |
| Bitmap.Config config = Bitmap.Config.ARGB_8888; |
| |
| // create a bitmap with the color array specified |
| Bitmap bm1 = Bitmap.createBitmap(colors, 16, 16, config); |
| |
| // create a bitmap with no colors, but then call setPixels |
| Bitmap bm2 = Bitmap.createBitmap(16, 16, config); |
| bm2.setPixels(colors, 0, 16, 0, 0, 16, 16); |
| |
| // now check that we did a good job returning the unpremultiplied alpha |
| final int tolerance = 1; |
| for (int i = 0; i < 256; i++) { |
| int c0 = colors[i]; |
| int c1 = bm1.getPixel(i % 16, i / 16); |
| int c2 = bm2.getPixel(i % 16, i / 16); |
| |
| // these two should always be identical |
| assertEquals("getPixel", c1, c2); |
| |
| // comparing the original (c0) with the returned color is tricky, |
| // since it gets premultiplied during the set(), and unpremultiplied |
| // by the get(). |
| int a0 = Color.alpha(c0); |
| int a1 = Color.alpha(c1); |
| assertEquals("alpha", a0, a1); |
| |
| int r0 = Color.red(c0); |
| int r1 = Color.red(c1); |
| int rr = computePrePostMul(a0, r0); |
| assertTrue("red", Math.abs(rr - r1) <= tolerance); |
| |
| int g0 = Color.green(c0); |
| int g1 = Color.green(c1); |
| int gg = computePrePostMul(a0, g0); |
| assertTrue("green", Math.abs(gg - g1) <= tolerance); |
| |
| int b0 = Color.blue(c0); |
| int b1 = Color.blue(c1); |
| int bb = computePrePostMul(a0, b0); |
| assertTrue("blue", Math.abs(bb - b1) <= tolerance); |
| |
| if (false) { |
| int cc = Color.argb(a0, rr, gg, bb); |
| android.util.Log.d("skia", "original " + Integer.toHexString(c0) + |
| " set+get " + Integer.toHexString(c1) + |
| " local " + Integer.toHexString(cc)); |
| } |
| } |
| } |
| |
| @SmallTest |
| public void testCreateHardwareBitmapFromGraphicBuffer() { |
| GraphicBuffer buffer = GraphicBuffer.create(10, 10, PixelFormat.RGBA_8888, |
| GraphicBuffer.USAGE_HW_TEXTURE | GraphicBuffer.USAGE_SOFTWARE_MASK); |
| Canvas canvas = buffer.lockCanvas(); |
| canvas.drawColor(Color.YELLOW); |
| buffer.unlockCanvasAndPost(canvas); |
| Bitmap hardwareBitmap = Bitmap.createHardwareBitmap(buffer); |
| assertTrue(hardwareBitmap.isPremultiplied()); |
| assertFalse(hardwareBitmap.isMutable()); |
| } |
| } |