| /* |
| * Copyright (C) 2008 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.cts; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.Bitmap.CompressFormat; |
| import android.graphics.Bitmap.Config; |
| import android.graphics.BitmapFactory; |
| import android.graphics.BitmapFactory.Options; |
| import android.graphics.Color; |
| import android.graphics.Rect; |
| import android.os.Parcel; |
| import android.os.ParcelFileDescriptor; |
| import android.support.test.InstrumentationRegistry; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| import android.system.ErrnoException; |
| import android.system.Os; |
| import android.system.OsConstants; |
| import android.util.DisplayMetrics; |
| import android.util.TypedValue; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.RandomAccessFile; |
| import java.util.concurrent.CountDownLatch; |
| |
| @SmallTest |
| @RunWith(AndroidJUnit4.class) |
| public class BitmapFactoryTest { |
| // height and width of start.jpg |
| private static final int START_HEIGHT = 31; |
| private static final int START_WIDTH = 31; |
| |
| // The test images, including baseline JPEG, a PNG, a GIF, a BMP AND a WEBP. |
| private static final int[] RES_IDS = new int[] { |
| R.drawable.baseline_jpeg, R.drawable.png_test, R.drawable.gif_test, |
| R.drawable.bmp_test, R.drawable.webp_test |
| }; |
| |
| // The width and height of the above image. |
| private static final int WIDTHS[] = new int[] { 1280, 640, 320, 320, 640 }; |
| private static final int HEIGHTS[] = new int[] { 960, 480, 240, 240, 480 }; |
| |
| // Configurations for BitmapFactory.Options |
| private static final Config[] COLOR_CONFIGS = new Config[] {Config.ARGB_8888, Config.RGB_565}; |
| private static final int[] COLOR_TOLS = new int[] {16, 49, 576}; |
| |
| private static final Config[] COLOR_CONFIGS_RGBA = new Config[] {Config.ARGB_8888}; |
| private static final int[] COLOR_TOLS_RGBA = new int[] {72, 124}; |
| |
| private static final int[] RAW_COLORS = new int[] { |
| // raw data from R.drawable.premul_data |
| Color.argb(255, 0, 0, 0), |
| Color.argb(128, 255, 0, 0), |
| Color.argb(128, 25, 26, 27), |
| Color.argb(2, 255, 254, 253), |
| }; |
| |
| private static final int[] DEPREMUL_COLORS = new int[] { |
| // data from R.drawable.premul_data, after premultiplied store + un-premultiplied load |
| Color.argb(255, 0, 0, 0), |
| Color.argb(128, 255, 0, 0), |
| Color.argb(128, 26, 26, 28), |
| Color.argb(2, 255, 255, 255), |
| }; |
| |
| private Resources mRes; |
| // opt for non-null |
| private BitmapFactory.Options mOpt1; |
| // opt for null |
| private BitmapFactory.Options mOpt2; |
| private int mDefaultDensity; |
| private int mTargetDensity; |
| |
| @Before |
| public void setup() { |
| mRes = InstrumentationRegistry.getTargetContext().getResources(); |
| mDefaultDensity = DisplayMetrics.DENSITY_DEFAULT; |
| mTargetDensity = mRes.getDisplayMetrics().densityDpi; |
| |
| mOpt1 = new BitmapFactory.Options(); |
| mOpt1.inScaled = false; |
| mOpt2 = new BitmapFactory.Options(); |
| mOpt2.inScaled = false; |
| mOpt2.inJustDecodeBounds = true; |
| } |
| |
| @Test |
| public void testConstructor() { |
| new BitmapFactory(); |
| } |
| |
| @Test |
| public void testDecodeResource1() { |
| Bitmap b = BitmapFactory.decodeResource(mRes, R.drawable.start, |
| mOpt1); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| // Test if no bitmap |
| assertNull(BitmapFactory.decodeResource(mRes, R.drawable.start, mOpt2)); |
| } |
| |
| @Test |
| public void testDecodeResource2() { |
| Bitmap b = BitmapFactory.decodeResource(mRes, R.drawable.start); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT * mTargetDensity / mDefaultDensity, b.getHeight(), 1.1); |
| assertEquals(START_WIDTH * mTargetDensity / mDefaultDensity, b.getWidth(), 1.1); |
| } |
| |
| @Test |
| public void testDecodeResourceStream() { |
| InputStream is = obtainInputStream(); |
| Rect r = new Rect(1, 1, 1, 1); |
| TypedValue value = new TypedValue(); |
| Bitmap b = BitmapFactory.decodeResourceStream(mRes, value, is, r, mOpt1); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| } |
| |
| @Test |
| public void testDecodeByteArray1() { |
| byte[] array = obtainArray(); |
| Bitmap b = BitmapFactory.decodeByteArray(array, 0, array.length, mOpt1); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| // Test if no bitmap |
| assertNull(BitmapFactory.decodeByteArray(array, 0, array.length, mOpt2)); |
| } |
| |
| @Test |
| public void testDecodeByteArray2() { |
| byte[] array = obtainArray(); |
| Bitmap b = BitmapFactory.decodeByteArray(array, 0, array.length); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| } |
| |
| @Test |
| public void testDecodeStream1() { |
| InputStream is = obtainInputStream(); |
| Rect r = new Rect(1, 1, 1, 1); |
| Bitmap b = BitmapFactory.decodeStream(is, r, mOpt1); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| // Test if no bitmap |
| assertNull(BitmapFactory.decodeStream(is, r, mOpt2)); |
| } |
| |
| @Test |
| public void testDecodeStream2() { |
| InputStream is = obtainInputStream(); |
| Bitmap b = BitmapFactory.decodeStream(is); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| } |
| |
| @Test |
| public void testDecodeStream3() { |
| for (int i = 0; i < RES_IDS.length; ++i) { |
| InputStream is = obtainInputStream(RES_IDS[i]); |
| Bitmap b = BitmapFactory.decodeStream(is); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(WIDTHS[i], b.getWidth()); |
| assertEquals(HEIGHTS[i], b.getHeight()); |
| } |
| } |
| |
| @Test |
| public void testDecodeStream4() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| for (int k = 0; k < COLOR_CONFIGS.length; ++k) { |
| options.inPreferredConfig = COLOR_CONFIGS[k]; |
| |
| // Decode the PNG & WebP test images. The WebP test image has been encoded from PNG test |
| // image and should have same similar (within some error-tolerance) Bitmap data. |
| InputStream iStreamPng = obtainInputStream(R.drawable.png_test); |
| Bitmap bPng = BitmapFactory.decodeStream(iStreamPng, null, options); |
| assertNotNull(bPng); |
| assertEquals(bPng.getConfig(), COLOR_CONFIGS[k]); |
| assertFalse(bPng.isPremultiplied()); |
| assertFalse(bPng.hasAlpha()); |
| |
| InputStream iStreamWebp1 = obtainInputStream(R.drawable.webp_test); |
| Bitmap bWebp1 = BitmapFactory.decodeStream(iStreamWebp1, null, options); |
| assertNotNull(bWebp1); |
| assertFalse(bWebp1.isPremultiplied()); |
| assertFalse(bWebp1.hasAlpha()); |
| compareBitmaps(bPng, bWebp1, COLOR_TOLS[k], true, bPng.isPremultiplied()); |
| |
| // Compress the PNG image to WebP format (Quality=90) and decode it back. |
| // This will test end-to-end WebP encoding and decoding. |
| ByteArrayOutputStream oStreamWebp = new ByteArrayOutputStream(); |
| assertTrue(bPng.compress(CompressFormat.WEBP, 90, oStreamWebp)); |
| InputStream iStreamWebp2 = new ByteArrayInputStream(oStreamWebp.toByteArray()); |
| Bitmap bWebp2 = BitmapFactory.decodeStream(iStreamWebp2, null, options); |
| assertNotNull(bWebp2); |
| assertFalse(bWebp2.isPremultiplied()); |
| assertFalse(bWebp2.hasAlpha()); |
| compareBitmaps(bPng, bWebp2, COLOR_TOLS[k], true, bPng.isPremultiplied()); |
| } |
| } |
| |
| @Test |
| public void testDecodeStream5() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| for (int k = 0; k < COLOR_CONFIGS_RGBA.length; ++k) { |
| options.inPreferredConfig = COLOR_CONFIGS_RGBA[k]; |
| |
| // Decode the PNG & WebP (google_logo) images. The WebP image has |
| // been encoded from PNG image. |
| InputStream iStreamPng = obtainInputStream(R.drawable.google_logo_1); |
| Bitmap bPng = BitmapFactory.decodeStream(iStreamPng, null, options); |
| assertNotNull(bPng); |
| assertEquals(bPng.getConfig(), COLOR_CONFIGS_RGBA[k]); |
| assertTrue(bPng.isPremultiplied()); |
| assertTrue(bPng.hasAlpha()); |
| |
| // Decode the corresponding WebP (transparent) image (google_logo_2.webp). |
| InputStream iStreamWebP1 = obtainInputStream(R.drawable.google_logo_2); |
| Bitmap bWebP1 = BitmapFactory.decodeStream(iStreamWebP1, null, options); |
| assertNotNull(bWebP1); |
| assertEquals(bWebP1.getConfig(), COLOR_CONFIGS_RGBA[k]); |
| assertTrue(bWebP1.isPremultiplied()); |
| assertTrue(bWebP1.hasAlpha()); |
| compareBitmaps(bPng, bWebP1, COLOR_TOLS_RGBA[k], true, bPng.isPremultiplied()); |
| |
| // Compress the PNG image to WebP format (Quality=90) and decode it back. |
| // This will test end-to-end WebP encoding and decoding. |
| ByteArrayOutputStream oStreamWebp = new ByteArrayOutputStream(); |
| assertTrue(bPng.compress(CompressFormat.WEBP, 90, oStreamWebp)); |
| InputStream iStreamWebp2 = new ByteArrayInputStream(oStreamWebp.toByteArray()); |
| Bitmap bWebP2 = BitmapFactory.decodeStream(iStreamWebp2, null, options); |
| assertNotNull(bWebP2); |
| assertEquals(bWebP2.getConfig(), COLOR_CONFIGS_RGBA[k]); |
| assertTrue(bWebP2.isPremultiplied()); |
| assertTrue(bWebP2.hasAlpha()); |
| compareBitmaps(bPng, bWebP2, COLOR_TOLS_RGBA[k], true, bPng.isPremultiplied()); |
| } |
| } |
| |
| @Test |
| public void testDecodeFileDescriptor1() throws IOException { |
| ParcelFileDescriptor pfd = obtainParcelDescriptor(obtainPath()); |
| FileDescriptor input = pfd.getFileDescriptor(); |
| Rect r = new Rect(1, 1, 1, 1); |
| Bitmap b = BitmapFactory.decodeFileDescriptor(input, r, mOpt1); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| // Test if no bitmap |
| assertNull(BitmapFactory.decodeFileDescriptor(input, r, mOpt2)); |
| } |
| |
| @Test |
| public void testDecodeFileDescriptor2() throws IOException { |
| ParcelFileDescriptor pfd = obtainParcelDescriptor(obtainPath()); |
| FileDescriptor input = pfd.getFileDescriptor(); |
| Bitmap b = BitmapFactory.decodeFileDescriptor(input); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| } |
| |
| @Test |
| public void testDecodeFileDescriptor3() throws IOException { |
| // Arbitrary offsets to use. If the offset of the FD matches the offset of the image, |
| // decoding should succeed, but if they do not match, decoding should fail. |
| long ACTUAL_OFFSETS[] = new long[] { 0, 17 }; |
| for (int RES_ID : RES_IDS) { |
| for (int j = 0; j < ACTUAL_OFFSETS.length; ++j) { |
| // FIXME: The purgeable test should attempt to purge the memory |
| // to force a re-decode. |
| for (boolean TEST_PURGEABLE : new boolean[] { false, true }) { |
| BitmapFactory.Options opts = new BitmapFactory.Options(); |
| opts.inPurgeable = TEST_PURGEABLE; |
| opts.inInputShareable = TEST_PURGEABLE; |
| |
| long actualOffset = ACTUAL_OFFSETS[j]; |
| String path = obtainPath(RES_ID, actualOffset); |
| RandomAccessFile file = new RandomAccessFile(path, "r"); |
| FileDescriptor fd = file.getFD(); |
| assertTrue(fd.valid()); |
| |
| // Set the offset to ACTUAL_OFFSET |
| file.seek(actualOffset); |
| assertEquals(file.getFilePointer(), actualOffset); |
| |
| // Now decode. This should be successful and leave the offset |
| // unchanged. |
| Bitmap b = BitmapFactory.decodeFileDescriptor(fd, null, opts); |
| assertNotNull(b); |
| assertEquals(file.getFilePointer(), actualOffset); |
| |
| // Now use the other offset. It should fail to decode, and |
| // the offset should remain unchanged. |
| long otherOffset = ACTUAL_OFFSETS[(j + 1) % ACTUAL_OFFSETS.length]; |
| assertFalse(otherOffset == actualOffset); |
| file.seek(otherOffset); |
| assertEquals(file.getFilePointer(), otherOffset); |
| |
| b = BitmapFactory.decodeFileDescriptor(fd, null, opts); |
| assertNull(b); |
| assertEquals(file.getFilePointer(), otherOffset); |
| } |
| } |
| } |
| } |
| |
| @Test |
| public void testDecodeFile1() throws IOException { |
| Bitmap b = BitmapFactory.decodeFile(obtainPath(), mOpt1); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| // Test if no bitmap |
| assertNull(BitmapFactory.decodeFile(obtainPath(), mOpt2)); |
| } |
| |
| @Test |
| public void testDecodeFile2() throws IOException { |
| Bitmap b = BitmapFactory.decodeFile(obtainPath()); |
| assertNotNull(b); |
| // Test the bitmap size |
| assertEquals(START_HEIGHT, b.getHeight()); |
| assertEquals(START_WIDTH, b.getWidth()); |
| } |
| |
| @Test |
| public void testDecodeReuseBasic() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inMutable = true; |
| options.inSampleSize = 0; // treated as 1 |
| options.inScaled = false; |
| Bitmap start = BitmapFactory.decodeResource(mRes, R.drawable.start, options); |
| int originalSize = start.getByteCount(); |
| assertEquals(originalSize, start.getAllocationByteCount()); |
| |
| options.inBitmap = start; |
| options.inMutable = false; // will be overridden by non-null inBitmap |
| options.inSampleSize = -42; // treated as 1 |
| Bitmap pass = BitmapFactory.decodeResource(mRes, R.drawable.pass, options); |
| |
| assertEquals(originalSize, pass.getByteCount()); |
| assertEquals(originalSize, pass.getAllocationByteCount()); |
| assertSame(start, pass); |
| assertTrue(pass.isMutable()); |
| } |
| |
| /** |
| * Create bitmap sized to load unscaled resources: start, pass, and alpha |
| */ |
| private Bitmap createBitmapForReuse(int pixelCount) { |
| Bitmap bitmap = Bitmap.createBitmap(pixelCount, 1, Config.ARGB_8888); |
| bitmap.eraseColor(Color.BLACK); |
| bitmap.setHasAlpha(false); |
| return bitmap; |
| } |
| |
| /** |
| * Decode resource with ResId into reuse bitmap without scaling, verifying expected hasAlpha |
| */ |
| private void decodeResourceWithReuse(Bitmap reuse, int resId, boolean hasAlpha) { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inMutable = true; |
| options.inSampleSize = 1; |
| options.inScaled = false; |
| options.inBitmap = reuse; |
| Bitmap output = BitmapFactory.decodeResource(mRes, resId, options); |
| assertSame(reuse, output); |
| assertEquals(output.hasAlpha(), hasAlpha); |
| } |
| |
| @Test |
| public void testDecodeReuseHasAlpha() { |
| final int bitmapSize = 31; // size in pixels of start, pass, and alpha resources |
| final int pixelCount = bitmapSize * bitmapSize; |
| |
| // Test reuse, hasAlpha false and true |
| Bitmap bitmap = createBitmapForReuse(pixelCount); |
| decodeResourceWithReuse(bitmap, R.drawable.start, false); |
| decodeResourceWithReuse(bitmap, R.drawable.alpha, true); |
| |
| // Test pre-reconfigure, hasAlpha false and true |
| bitmap = createBitmapForReuse(pixelCount); |
| bitmap.reconfigure(bitmapSize, bitmapSize, Config.ARGB_8888); |
| bitmap.setHasAlpha(true); |
| decodeResourceWithReuse(bitmap, R.drawable.start, false); |
| |
| bitmap = createBitmapForReuse(pixelCount); |
| bitmap.reconfigure(bitmapSize, bitmapSize, Config.ARGB_8888); |
| decodeResourceWithReuse(bitmap, R.drawable.alpha, true); |
| } |
| |
| @Test |
| public void testDecodeReuseFormats() { |
| // reuse should support all image formats |
| for (int i = 0; i < RES_IDS.length; ++i) { |
| Bitmap reuseBuffer = Bitmap.createBitmap(1000000, 1, Bitmap.Config.ALPHA_8); |
| |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inBitmap = reuseBuffer; |
| options.inSampleSize = 4; |
| options.inScaled = false; |
| Bitmap decoded = BitmapFactory.decodeResource(mRes, RES_IDS[i], options); |
| assertSame(reuseBuffer, decoded); |
| } |
| } |
| |
| @Test |
| public void testDecodeReuseFailure() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inMutable = true; |
| options.inScaled = false; |
| options.inSampleSize = 4; |
| Bitmap reduced = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| |
| options.inBitmap = reduced; |
| options.inSampleSize = 1; |
| try { |
| BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| fail("should throw exception due to lack of space"); |
| } catch (IllegalArgumentException e) { |
| } |
| } |
| |
| @Test |
| public void testDecodeReuseScaling() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inMutable = true; |
| options.inScaled = false; |
| Bitmap original = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| int originalSize = original.getByteCount(); |
| assertEquals(originalSize, original.getAllocationByteCount()); |
| |
| options.inBitmap = original; |
| options.inSampleSize = 4; |
| Bitmap reduced = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| |
| assertSame(original, reduced); |
| assertEquals(originalSize, reduced.getAllocationByteCount()); |
| assertEquals(originalSize, reduced.getByteCount() * 16); |
| } |
| |
| @Test |
| public void testDecodeReuseDoubleScaling() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inMutable = true; |
| options.inScaled = false; |
| options.inSampleSize = 1; |
| Bitmap original = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| int originalSize = original.getByteCount(); |
| |
| // Verify that inSampleSize and density scaling both work with reuse concurrently |
| options.inBitmap = original; |
| options.inScaled = true; |
| options.inSampleSize = 2; |
| options.inDensity = 2; |
| options.inTargetDensity = 4; |
| Bitmap doubleScaled = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| |
| assertSame(original, doubleScaled); |
| assertEquals(4, doubleScaled.getDensity()); |
| assertEquals(originalSize, doubleScaled.getByteCount()); |
| } |
| |
| @Test |
| public void testDecodeReuseEquivalentScaling() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inMutable = true; |
| options.inScaled = true; |
| options.inDensity = 4; |
| options.inTargetDensity = 2; |
| Bitmap densityReduced = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| assertEquals(2, densityReduced.getDensity()); |
| options.inBitmap = densityReduced; |
| options.inDensity = 0; |
| options.inScaled = false; |
| options.inSampleSize = 2; |
| Bitmap scaleReduced = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| // verify that density isn't incorrectly carried over during bitmap reuse |
| assertFalse(densityReduced.getDensity() == 2); |
| assertFalse(densityReduced.getDensity() == 0); |
| assertSame(densityReduced, scaleReduced); |
| } |
| |
| @Test |
| public void testDecodePremultipliedDefault() { |
| Bitmap simplePremul = BitmapFactory.decodeResource(mRes, R.drawable.premul_data); |
| assertTrue(simplePremul.isPremultiplied()); |
| } |
| |
| @Test |
| public void testDecodePremultipliedData() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inScaled = false; |
| Bitmap premul = BitmapFactory.decodeResource(mRes, R.drawable.premul_data, options); |
| options.inPremultiplied = false; |
| Bitmap unpremul = BitmapFactory.decodeResource(mRes, R.drawable.premul_data, options); |
| assertEquals(premul.getConfig(), Bitmap.Config.ARGB_8888); |
| assertEquals(unpremul.getConfig(), Bitmap.Config.ARGB_8888); |
| assertTrue(premul.getHeight() == 1 && unpremul.getHeight() == 1); |
| assertTrue(premul.getWidth() == unpremul.getWidth() && |
| DEPREMUL_COLORS.length == RAW_COLORS.length && |
| premul.getWidth() == DEPREMUL_COLORS.length); |
| |
| // verify pixel data - unpremul should have raw values, premul will have rounding errors |
| for (int i = 0; i < premul.getWidth(); i++) { |
| assertEquals(premul.getPixel(i, 0), DEPREMUL_COLORS[i]); |
| assertEquals(unpremul.getPixel(i, 0), RAW_COLORS[i]); |
| } |
| } |
| |
| @Test |
| public void testDecodeInPurgeableAllocationCount() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inSampleSize = 1; |
| options.inJustDecodeBounds = false; |
| options.inPurgeable = true; |
| options.inInputShareable = false; |
| byte[] array = obtainArray(); |
| Bitmap purgeableBitmap = BitmapFactory.decodeByteArray(array, 0, array.length, options); |
| assertFalse(purgeableBitmap.getAllocationByteCount() == 0); |
| } |
| |
| private int mDefaultCreationDensity; |
| private void verifyScaled(Bitmap b) { |
| assertEquals(b.getWidth(), START_WIDTH * 2); |
| assertEquals(b.getDensity(), 2); |
| } |
| |
| private void verifyUnscaled(Bitmap b) { |
| assertEquals(b.getWidth(), START_WIDTH); |
| assertEquals(b.getDensity(), mDefaultCreationDensity); |
| } |
| |
| @Test |
| public void testDecodeScaling() { |
| BitmapFactory.Options defaultOpt = new BitmapFactory.Options(); |
| |
| BitmapFactory.Options unscaledOpt = new BitmapFactory.Options(); |
| unscaledOpt.inScaled = false; |
| |
| BitmapFactory.Options scaledOpt = new BitmapFactory.Options(); |
| scaledOpt.inScaled = true; |
| scaledOpt.inDensity = 1; |
| scaledOpt.inTargetDensity = 2; |
| |
| mDefaultCreationDensity = Bitmap.createBitmap(1, 1, Config.ARGB_8888).getDensity(); |
| |
| byte[] bytes = obtainArray(); |
| |
| verifyUnscaled(BitmapFactory.decodeByteArray(bytes, 0, bytes.length)); |
| verifyUnscaled(BitmapFactory.decodeByteArray(bytes, 0, bytes.length, null)); |
| verifyUnscaled(BitmapFactory.decodeByteArray(bytes, 0, bytes.length, unscaledOpt)); |
| verifyUnscaled(BitmapFactory.decodeByteArray(bytes, 0, bytes.length, defaultOpt)); |
| |
| verifyUnscaled(BitmapFactory.decodeStream(obtainInputStream())); |
| verifyUnscaled(BitmapFactory.decodeStream(obtainInputStream(), null, null)); |
| verifyUnscaled(BitmapFactory.decodeStream(obtainInputStream(), null, unscaledOpt)); |
| verifyUnscaled(BitmapFactory.decodeStream(obtainInputStream(), null, defaultOpt)); |
| |
| // scaling should only occur if Options are passed with inScaled=true |
| verifyScaled(BitmapFactory.decodeByteArray(bytes, 0, bytes.length, scaledOpt)); |
| verifyScaled(BitmapFactory.decodeStream(obtainInputStream(), null, scaledOpt)); |
| } |
| |
| @Test |
| public void testParcel() { |
| BitmapFactory.Options opts = new BitmapFactory.Options(); |
| opts.inScaled = false; |
| Bitmap b = BitmapFactory.decodeResource(mRes, R.drawable.gif_test, opts); |
| assertNotNull(b); |
| |
| Parcel p = Parcel.obtain(); |
| b.writeToParcel(p, 0); |
| |
| p.setDataPosition(0); |
| Bitmap b2 = Bitmap.CREATOR.createFromParcel(p); |
| compareBitmaps(b, b2, 0, true, true); |
| |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| assertTrue(b2.compress(Bitmap.CompressFormat.JPEG, 50, baos)); |
| } |
| |
| @Test |
| public void testConfigs() { |
| // The output Config of a BitmapFactory decode depends on the request from the |
| // client and the properties of the image to be decoded. |
| // |
| // Options.inPreferredConfig = Config.ARGB_8888 |
| // This is the default value of inPreferredConfig. In this case, the image |
| // will always be decoded to Config.ARGB_8888. |
| // Options.inPreferredConfig = Config.RGB_565 |
| // If the encoded image is opaque, we will decode to Config.RGB_565, |
| // otherwise we will decode to whichever color type is the most natural match |
| // for the encoded data. |
| // Options.inPreferredConfig = Config.ARGB_4444 |
| // This is deprecated and will always decode to Config.ARGB_8888. |
| // Options.inPreferredConfig = Config.ALPHA_8 |
| // If the encoded image is gray, we will decode to 8-bit grayscale values |
| // and indicate that the output bitmap is Config.ALPHA_8. This is somewhat |
| // misleading because the image is really opaque and grayscale, but we are |
| // labeling each pixel as if it is a translucency (alpha) value. If the |
| // encoded image is not gray, we will decode to whichever color type is the |
| // most natural match for the encoded data. |
| // Options.inPreferredConfig = null |
| // We will decode to whichever Config is the most natural match with the |
| // encoded data. This could be ALPHA_8 (gray) or ARGB_8888. |
| // |
| // This test ensures that images are decoded to the intended Config and that the |
| // decodes match regardless of the Config. |
| decodeConfigs(R.drawable.alpha, 31, 31, true, false); |
| decodeConfigs(R.drawable.baseline_jpeg, 1280, 960, false, false); |
| decodeConfigs(R.drawable.bmp_test, 320, 240, false, false); |
| decodeConfigs(R.drawable.scaled2, 6, 8, false, false); |
| decodeConfigs(R.drawable.grayscale_jpg, 128, 128, false, true); |
| decodeConfigs(R.drawable.grayscale_png, 128, 128, false, true); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testMutableHardwareInDecodeResource() { |
| Options options = new Options(); |
| options.inMutable = true; |
| options.inPreferredConfig = Config.HARDWARE; |
| BitmapFactory.decodeResource(mRes, R.drawable.alpha, options); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testMutableHardwareInDecodeByteArray() { |
| Options options = new Options(); |
| options.inMutable = true; |
| options.inPreferredConfig = Config.HARDWARE; |
| BitmapFactory.decodeByteArray(new byte[100], 1, 20, options); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testMutableHardwareInDecodeFile() { |
| Options options = new Options(); |
| options.inMutable = true; |
| options.inPreferredConfig = Config.HARDWARE; |
| BitmapFactory.decodeFile("barely/care.jpg", options); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testMutableHardwareInDecodeFileDescriptor() { |
| Options options = new Options(); |
| options.inMutable = true; |
| options.inPreferredConfig = Config.HARDWARE; |
| BitmapFactory.decodeFileDescriptor(null, new Rect(), options); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testMutableHardwareInDecodeResourceStream() { |
| Options options = new Options(); |
| options.inMutable = true; |
| options.inPreferredConfig = Config.HARDWARE; |
| TypedValue value = new TypedValue(); |
| BitmapFactory.decodeResourceStream(mRes, value, |
| new ByteArrayInputStream(new byte[20]), new Rect(), options); |
| } |
| |
| @Test |
| public void testDecodeHardwareBitmap() { |
| BitmapFactory.Options options = new BitmapFactory.Options(); |
| options.inPreferredConfig = Bitmap.Config.HARDWARE; |
| Bitmap hardwareBitmap = BitmapFactory.decodeResource(mRes, R.drawable.robot, options); |
| assertNotNull(hardwareBitmap); |
| // Test that checks that correct bitmap was obtained is in uirendering/HardwareBitmapTests |
| assertEquals(Config.HARDWARE, hardwareBitmap.getConfig()); |
| } |
| |
| @Test |
| public void testDecodePngFromPipe() { |
| // This test verifies that we can send a PNG over a pipe and |
| // successfully decode it. This behavior worked in N, so this |
| // verifies that do not break it for backwards compatibility. |
| // This was already not supported for the other Bitmap.CompressFormats |
| // (JPEG and WEBP), so we do not test those. |
| Bitmap source = Bitmap.createBitmap(100, 100, Config.ARGB_8888); |
| source.eraseColor(Color.RED); |
| try { |
| Bitmap result = sendOverPipe(source, CompressFormat.PNG); |
| assertTrue(source.sameAs(result)); |
| } catch (Exception e) { |
| fail(e.toString()); |
| } |
| } |
| |
| private Bitmap sendOverPipe(Bitmap source, CompressFormat format) |
| throws IOException, ErrnoException, InterruptedException { |
| FileDescriptor[] pipeFds = Os.pipe(); |
| final FileDescriptor readFd = pipeFds[0]; |
| final FileDescriptor writeFd = pipeFds[1]; |
| final Throwable[] compressErrors = new Throwable[1]; |
| final CountDownLatch writeFinished = new CountDownLatch(1); |
| final CountDownLatch readFinished = new CountDownLatch(1); |
| final Bitmap[] decodedResult = new Bitmap[1]; |
| Thread writeThread = new Thread() { |
| @Override |
| public void run() { |
| try { |
| FileOutputStream output = new FileOutputStream(writeFd); |
| source.compress(format, 100, output); |
| output.close(); |
| } catch (Throwable t) { |
| compressErrors[0] = t; |
| // Try closing the FD to unblock the test thread |
| try { |
| Os.close(writeFd); |
| } catch (Throwable ignore) {} |
| } finally { |
| writeFinished.countDown(); |
| } |
| } |
| }; |
| Thread readThread = new Thread() { |
| @Override |
| public void run() { |
| decodedResult[0] = BitmapFactory.decodeFileDescriptor(readFd); |
| } |
| }; |
| writeThread.start(); |
| readThread.start(); |
| writeThread.join(1000); |
| readThread.join(1000); |
| assertFalse(writeThread.isAlive()); |
| if (compressErrors[0] != null) { |
| fail(compressErrors[0].toString()); |
| } |
| if (readThread.isAlive()) { |
| // Test failure, try to clean up |
| Os.close(writeFd); |
| readThread.join(500); |
| fail("Read timed out"); |
| } |
| assertValidFd("readFd", readFd); |
| assertValidFd("writeFd", writeFd); |
| Os.close(readFd); |
| Os.close(writeFd); |
| return decodedResult[0]; |
| } |
| |
| private static void assertValidFd(String name, FileDescriptor fd) { |
| try { |
| assertTrue(fd.valid()); |
| // Hacky check to test that the underlying FD is still valid without using |
| // the private fcntlVoid to do F_GETFD |
| Os.close(Os.dup(fd)); |
| } catch (ErrnoException ex) { |
| fail(name + " is invalid: " + ex.getMessage()); |
| } |
| } |
| |
| private void decodeConfigs(int id, int width, int height, boolean hasAlpha, boolean isGray) { |
| Options opts = new BitmapFactory.Options(); |
| opts.inScaled = false; |
| assertEquals(Config.ARGB_8888, opts.inPreferredConfig); |
| Bitmap reference = BitmapFactory.decodeResource(mRes, id, opts); |
| assertNotNull(reference); |
| assertEquals(width, reference.getWidth()); |
| assertEquals(height, reference.getHeight()); |
| assertEquals(Config.ARGB_8888, reference.getConfig()); |
| |
| opts.inPreferredConfig = Config.ARGB_4444; |
| Bitmap argb4444 = BitmapFactory.decodeResource(mRes, id, opts); |
| assertNotNull(argb4444); |
| assertEquals(width, argb4444.getWidth()); |
| assertEquals(height, argb4444.getHeight()); |
| // ARGB_4444 is deprecated and we should decode to ARGB_8888. |
| assertEquals(Config.ARGB_8888, argb4444.getConfig()); |
| compareBitmaps(reference, argb4444, 0, true, true); |
| |
| opts.inPreferredConfig = Config.RGB_565; |
| Bitmap rgb565 = BitmapFactory.decodeResource(mRes, id, opts); |
| assertNotNull(rgb565); |
| assertEquals(width, rgb565.getWidth()); |
| assertEquals(height, rgb565.getHeight()); |
| if (!hasAlpha) { |
| assertEquals(Config.RGB_565, rgb565.getConfig()); |
| // Convert the RGB_565 bitmap to ARGB_8888 and test that it is similar to |
| // the reference. We lose information when decoding to 565, so there must |
| // be some tolerance. The tolerance is intentionally loose to allow us some |
| // flexibility regarding if we dither and how we color convert. |
| compareBitmaps(reference, rgb565.copy(Config.ARGB_8888, false), 30, true, true); |
| } |
| |
| opts.inPreferredConfig = Config.ALPHA_8; |
| Bitmap alpha8 = BitmapFactory.decodeResource(mRes, id, opts); |
| assertNotNull(alpha8); |
| assertEquals(width, reference.getWidth()); |
| assertEquals(height, reference.getHeight()); |
| if (isGray) { |
| assertEquals(Config.ALPHA_8, alpha8.getConfig()); |
| // Convert the ALPHA_8 bitmap to ARGB_8888 and test that it is identical to |
| // the reference. We must do this manually because we are abusing ALPHA_8 |
| // in order to represent grayscale. |
| compareBitmaps(reference, grayToARGB(alpha8), 0, true, true); |
| } |
| |
| // Setting inPreferredConfig to nullptr will cause the default Config to be |
| // selected, which in this case is ARGB_8888. |
| opts.inPreferredConfig = null; |
| Bitmap defaultBitmap = BitmapFactory.decodeResource(mRes, id, opts); |
| assertNotNull(defaultBitmap); |
| assertEquals(width, defaultBitmap.getWidth()); |
| assertEquals(height, defaultBitmap.getHeight()); |
| assertEquals(Config.ARGB_8888, defaultBitmap.getConfig()); |
| compareBitmaps(reference, defaultBitmap, 0, true, true); |
| } |
| |
| private static Bitmap grayToARGB(Bitmap gray) { |
| Bitmap argb = Bitmap.createBitmap(gray.getWidth(), gray.getHeight(), Config.ARGB_8888); |
| for (int y = 0; y < argb.getHeight(); y++) { |
| for (int x = 0; x < argb.getWidth(); x++) { |
| int grayByte = Color.alpha(gray.getPixel(x, y)); |
| argb.setPixel(x, y, Color.rgb(grayByte, grayByte, grayByte)); |
| } |
| } |
| return argb; |
| } |
| |
| private byte[] obtainArray() { |
| ByteArrayOutputStream stm = new ByteArrayOutputStream(); |
| Options opt = new BitmapFactory.Options(); |
| opt.inScaled = false; |
| Bitmap bitmap = BitmapFactory.decodeResource(mRes, R.drawable.start, opt); |
| bitmap.compress(Bitmap.CompressFormat.JPEG, 0, stm); |
| return(stm.toByteArray()); |
| } |
| |
| private InputStream obtainInputStream() { |
| return mRes.openRawResource(R.drawable.start); |
| } |
| |
| private InputStream obtainInputStream(int resId) { |
| return mRes.openRawResource(resId); |
| } |
| |
| private static ParcelFileDescriptor obtainParcelDescriptor(String path) throws IOException { |
| File file = new File(path); |
| return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY); |
| } |
| |
| private String obtainPath() throws IOException { |
| return obtainPath(R.drawable.start, 0); |
| } |
| |
| /* |
| * Create a new file and return a path to it. |
| * @param resId Original file. It will be copied into the new file. |
| * @param offset Number of zeroes to write to the new file before the |
| * copied file. This allows testing decodeFileDescriptor |
| * with an offset. Must be less than or equal to 1024 |
| */ |
| private String obtainPath(int resId, long offset) throws IOException { |
| File dir = InstrumentationRegistry.getTargetContext().getFilesDir(); |
| dir.mkdirs(); |
| // The suffix does not necessarily represent theactual file type. |
| File file = new File(dir, "test.jpg"); |
| if (!file.createNewFile()) { |
| if (!file.exists()) { |
| fail("Failed to create new File!"); |
| } |
| } |
| InputStream is = obtainInputStream(resId); |
| FileOutputStream fOutput = new FileOutputStream(file); |
| byte[] dataBuffer = new byte[1024]; |
| // Write a bunch of zeroes before the image. |
| assertTrue(offset <= 1024); |
| fOutput.write(dataBuffer, 0, (int) offset); |
| int readLength = 0; |
| while ((readLength = is.read(dataBuffer)) != -1) { |
| fOutput.write(dataBuffer, 0, readLength); |
| } |
| is.close(); |
| fOutput.close(); |
| return (file.getPath()); |
| } |
| |
| // Compare expected to actual to see if their diff is less then mseMargin. |
| // lessThanMargin is to indicate whether we expect the mean square error |
| // to be "less than" or "no less than". |
| private static void compareBitmaps(Bitmap expected, Bitmap actual, |
| int mseMargin, boolean lessThanMargin, boolean isPremultiplied) { |
| final int width = expected.getWidth(); |
| final int height = expected.getHeight(); |
| |
| assertEquals("mismatching widths", width, actual.getWidth()); |
| assertEquals("mismatching heights", height, actual.getHeight()); |
| assertEquals("mismatching configs", expected.getConfig(), |
| actual.getConfig()); |
| |
| double mse = 0; |
| int[] expectedColors = new int [width * height]; |
| int[] actualColors = new int [width * height]; |
| |
| // Bitmap.getPixels() returns colors with non-premultiplied ARGB values. |
| expected.getPixels(expectedColors, 0, width, 0, 0, width, height); |
| actual.getPixels(actualColors, 0, width, 0, 0, width, height); |
| |
| for (int row = 0; row < height; ++row) { |
| for (int col = 0; col < width; ++col) { |
| int idx = row * width + col; |
| mse += distance(expectedColors[idx], actualColors[idx], isPremultiplied); |
| } |
| } |
| mse /= width * height; |
| |
| if (lessThanMargin) { |
| assertTrue("MSE " + mse + "larger than the threshold: " + mseMargin, |
| mse <= mseMargin); |
| } else { |
| assertFalse("MSE " + mse + "smaller than the threshold: " + mseMargin, |
| mse <= mseMargin); |
| } |
| } |
| |
| private static int multiplyAlpha(int color, int alpha) { |
| return (color * alpha + 127) / 255; |
| } |
| |
| // For the Bitmap with Alpha, multiply the Alpha values to get the effective |
| // RGB colors and then compute the color-distance. |
| private static double distance(int expect, int actual, boolean isPremultiplied) { |
| if (isPremultiplied) { |
| final int a1 = Color.alpha(actual); |
| final int a2 = Color.alpha(expect); |
| final int r = multiplyAlpha(Color.red(actual), a1) - |
| multiplyAlpha(Color.red(expect), a2); |
| final int g = multiplyAlpha(Color.green(actual), a1) - |
| multiplyAlpha(Color.green(expect), a2); |
| final int b = multiplyAlpha(Color.blue(actual), a1) - |
| multiplyAlpha(Color.blue(expect), a2); |
| return r * r + g * g + b * b; |
| } else { |
| final int r = Color.red(actual) - Color.red(expect); |
| final int g = Color.green(actual) - Color.green(expect); |
| final int b = Color.blue(actual) - Color.blue(expect); |
| return r * r + g * g + b * b; |
| } |
| } |
| } |
