| /* | |
| * Copyright 2013 Google Inc. | |
| * | |
| * Use of this source code is governed by a BSD-style license that can be | |
| * found in the LICENSE file. | |
| */ | |
| #include "SkBitmap.h" | |
| #include "SkCanvas.h" | |
| #include "SkColor.h" | |
| #include "SkColorPriv.h" | |
| #include "SkData.h" | |
| #include "SkDecodingImageGenerator.h" | |
| #include "SkDiscardableMemoryPool.h" | |
| #include "SkForceLinking.h" | |
| #include "SkGradientShader.h" | |
| #include "SkImageDecoder.h" | |
| #include "SkImageEncoder.h" | |
| #include "SkImageGeneratorPriv.h" | |
| #include "SkImagePriv.h" | |
| #include "SkOSFile.h" | |
| #include "SkPoint.h" | |
| #include "SkShader.h" | |
| #include "SkStream.h" | |
| #include "SkString.h" | |
| #include "Test.h" | |
| __SK_FORCE_IMAGE_DECODER_LINKING; | |
| /** | |
| * Interprets c as an unpremultiplied color, and returns the | |
| * premultiplied equivalent. | |
| */ | |
| static SkPMColor premultiply_unpmcolor(SkPMColor c) { | |
| U8CPU a = SkGetPackedA32(c); | |
| U8CPU r = SkGetPackedR32(c); | |
| U8CPU g = SkGetPackedG32(c); | |
| U8CPU b = SkGetPackedB32(c); | |
| return SkPreMultiplyARGB(a, r, g, b); | |
| } | |
| /** | |
| * Return true if this stream format should be skipped, due | |
| * to do being an opaque format or not a valid format. | |
| */ | |
| static bool skip_image_format(SkImageDecoder::Format format) { | |
| switch (format) { | |
| case SkImageDecoder::kPNG_Format: | |
| case SkImageDecoder::kWEBP_Format: | |
| return false; | |
| // Skip unknown since it will not be decoded anyway. | |
| case SkImageDecoder::kUnknown_Format: | |
| // Technically ICO and BMP supports alpha channels, but our image | |
| // decoders do not, so skip them as well. | |
| case SkImageDecoder::kICO_Format: | |
| case SkImageDecoder::kBMP_Format: | |
| // KTX is a Texture format so it's not particularly clear how to | |
| // decode the alpha from it. | |
| case SkImageDecoder::kKTX_Format: | |
| // The rest of these are opaque. | |
| case SkImageDecoder::kPKM_Format: | |
| case SkImageDecoder::kWBMP_Format: | |
| case SkImageDecoder::kGIF_Format: | |
| case SkImageDecoder::kJPEG_Format: | |
| return true; | |
| } | |
| SkASSERT(false); | |
| return true; | |
| } | |
| /** | |
| * Test decoding an image in premultiplied mode and unpremultiplied mode and compare | |
| * them. | |
| */ | |
| static void compare_unpremul(skiatest::Reporter* reporter, const SkString& filename) { | |
| // Decode a resource: | |
| SkBitmap bm8888; | |
| SkBitmap bm8888Unpremul; | |
| SkFILEStream stream(filename.c_str()); | |
| SkImageDecoder::Format format = SkImageDecoder::GetStreamFormat(&stream); | |
| if (skip_image_format(format)) { | |
| return; | |
| } | |
| SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream)); | |
| if (NULL == decoder.get()) { | |
| SkDebugf("couldn't decode %s\n", filename.c_str()); | |
| return; | |
| } | |
| bool success = decoder->decode(&stream, &bm8888, SkBitmap::kARGB_8888_Config, | |
| SkImageDecoder::kDecodePixels_Mode); | |
| if (!success) { | |
| return; | |
| } | |
| success = stream.rewind(); | |
| REPORTER_ASSERT(reporter, success); | |
| if (!success) { | |
| return; | |
| } | |
| decoder->setRequireUnpremultipliedColors(true); | |
| success = decoder->decode(&stream, &bm8888Unpremul, SkBitmap::kARGB_8888_Config, | |
| SkImageDecoder::kDecodePixels_Mode); | |
| if (!success) { | |
| return; | |
| } | |
| bool dimensionsMatch = bm8888.width() == bm8888Unpremul.width() | |
| && bm8888.height() == bm8888Unpremul.height(); | |
| REPORTER_ASSERT(reporter, dimensionsMatch); | |
| if (!dimensionsMatch) { | |
| return; | |
| } | |
| // Only do the comparison if the two bitmaps are both 8888. | |
| if (bm8888.config() != SkBitmap::kARGB_8888_Config | |
| || bm8888Unpremul.config() != SkBitmap::kARGB_8888_Config) { | |
| return; | |
| } | |
| // Now compare the two bitmaps. | |
| for (int i = 0; i < bm8888.width(); ++i) { | |
| for (int j = 0; j < bm8888.height(); ++j) { | |
| // "c0" is the color of the premultiplied bitmap at (i, j). | |
| const SkPMColor c0 = *bm8888.getAddr32(i, j); | |
| // "c1" is the result of premultiplying the color of the unpremultiplied | |
| // bitmap at (i, j). | |
| const SkPMColor c1 = premultiply_unpmcolor(*bm8888Unpremul.getAddr32(i, j)); | |
| // Compute the difference for each component. | |
| int da = SkAbs32(SkGetPackedA32(c0) - SkGetPackedA32(c1)); | |
| int dr = SkAbs32(SkGetPackedR32(c0) - SkGetPackedR32(c1)); | |
| int dg = SkAbs32(SkGetPackedG32(c0) - SkGetPackedG32(c1)); | |
| int db = SkAbs32(SkGetPackedB32(c0) - SkGetPackedB32(c1)); | |
| // Alpha component must be exactly the same. | |
| REPORTER_ASSERT(reporter, 0 == da); | |
| // Color components may not match exactly due to rounding error. | |
| REPORTER_ASSERT(reporter, dr <= 1); | |
| REPORTER_ASSERT(reporter, dg <= 1); | |
| REPORTER_ASSERT(reporter, db <= 1); | |
| } | |
| } | |
| } | |
| static void test_unpremul(skiatest::Reporter* reporter) { | |
| // This test cannot run if there is no resource path. | |
| SkString resourcePath = skiatest::Test::GetResourcePath(); | |
| if (resourcePath.isEmpty()) { | |
| SkDebugf("Could not run unpremul test because resourcePath not specified."); | |
| return; | |
| } | |
| SkOSFile::Iter iter(resourcePath.c_str()); | |
| SkString basename; | |
| if (iter.next(&basename)) { | |
| do { | |
| SkString filename = SkOSPath::SkPathJoin(resourcePath.c_str(), basename.c_str()); | |
| // SkDebugf("about to decode \"%s\"\n", filename.c_str()); | |
| compare_unpremul(reporter, filename); | |
| } while (iter.next(&basename)); | |
| } else { | |
| SkDebugf("Failed to find any files :(\n"); | |
| } | |
| } | |
| #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) | |
| // Test that the alpha type is what we expect. | |
| static void test_alphaType(skiatest::Reporter* reporter, const SkString& filename, | |
| bool requireUnpremul) { | |
| SkBitmap bm; | |
| SkFILEStream stream(filename.c_str()); | |
| SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream)); | |
| if (NULL == decoder.get()) { | |
| return; | |
| } | |
| decoder->setRequireUnpremultipliedColors(requireUnpremul); | |
| // Decode just the bounds. This should always succeed. | |
| bool success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config, | |
| SkImageDecoder::kDecodeBounds_Mode); | |
| REPORTER_ASSERT(reporter, success); | |
| if (!success) { | |
| return; | |
| } | |
| // Keep track of the alpha type for testing later. If the full decode | |
| // succeeds, the alpha type should be the same, unless the full decode | |
| // determined that the alpha type should actually be opaque, which may | |
| // not be known when only decoding the bounds. | |
| const SkAlphaType boundsAlphaType = bm.alphaType(); | |
| // rewind should always succeed on SkFILEStream. | |
| success = stream.rewind(); | |
| REPORTER_ASSERT(reporter, success); | |
| if (!success) { | |
| return; | |
| } | |
| success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config, | |
| SkImageDecoder::kDecodePixels_Mode); | |
| if (!success) { | |
| // When the decoder is set to require unpremul, if it does not support | |
| // unpremul it will fail. This is the only reason the decode should | |
| // fail (since we know the files we are using to test can be decoded). | |
| REPORTER_ASSERT(reporter, requireUnpremul); | |
| return; | |
| } | |
| // The bounds decode should return with either the requested | |
| // premul/unpremul or opaque, if that value could be determined when only | |
| // decoding the bounds. | |
| if (requireUnpremul) { | |
| REPORTER_ASSERT(reporter, kUnpremul_SkAlphaType == boundsAlphaType | |
| || kOpaque_SkAlphaType == boundsAlphaType); | |
| } else { | |
| REPORTER_ASSERT(reporter, kPremul_SkAlphaType == boundsAlphaType | |
| || kOpaque_SkAlphaType == boundsAlphaType); | |
| } | |
| // When decoding the full image, the alpha type should match the one | |
| // returned by the bounds decode, unless the full decode determined that | |
| // the alpha type is actually opaque. | |
| REPORTER_ASSERT(reporter, bm.alphaType() == boundsAlphaType | |
| || bm.alphaType() == kOpaque_SkAlphaType); | |
| } | |
| DEF_TEST(ImageDecoding_alphaType, reporter) { | |
| SkString resourcePath = skiatest::Test::GetResourcePath(); | |
| if (resourcePath.isEmpty()) { | |
| SkDebugf("Could not run alphaType test because resourcePath not specified."); | |
| return; | |
| } | |
| SkOSFile::Iter iter(resourcePath.c_str()); | |
| SkString basename; | |
| if (iter.next(&basename)) { | |
| do { | |
| SkString filename = SkOSPath::SkPathJoin(resourcePath.c_str(), basename.c_str()); | |
| for (int truth = 0; truth <= 1; ++truth) { | |
| test_alphaType(reporter, filename, SkToBool(truth)); | |
| } | |
| } while (iter.next(&basename)); | |
| } else { | |
| SkDebugf("Failed to find any files :(\n"); | |
| } | |
| } | |
| // Using known images, test that decoding into unpremul and premul behave as expected. | |
| DEF_TEST(ImageDecoding_unpremul, reporter) { | |
| SkString resourcePath = skiatest::Test::GetResourcePath(); | |
| if (resourcePath.isEmpty()) { | |
| SkDebugf("Could not run unpremul test because resourcePath not specified."); | |
| return; | |
| } | |
| const char* root = "half-transparent-white-pixel"; | |
| const char* suffixes[] = { ".png", ".webp" }; | |
| for (size_t i = 0; i < SK_ARRAY_COUNT(suffixes); ++i) { | |
| SkString basename = SkStringPrintf("%s%s", root, suffixes[i]); | |
| SkString fullName = SkOSPath::SkPathJoin(resourcePath.c_str(), basename.c_str()); | |
| SkBitmap bm; | |
| SkFILEStream stream(fullName.c_str()); | |
| if (!stream.isValid()) { | |
| SkDebugf("file %s missing from resource directoy %s\n", | |
| basename.c_str(), resourcePath.c_str()); | |
| continue; | |
| } | |
| // This should never fail since we know the images we're decoding. | |
| SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream)); | |
| REPORTER_ASSERT(reporter, NULL != decoder.get()); | |
| if (NULL == decoder.get()) { | |
| continue; | |
| } | |
| // Test unpremultiplied. We know what color this should result in. | |
| decoder->setRequireUnpremultipliedColors(true); | |
| bool success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config, | |
| SkImageDecoder::kDecodePixels_Mode); | |
| REPORTER_ASSERT(reporter, success); | |
| if (!success) { | |
| continue; | |
| } | |
| REPORTER_ASSERT(reporter, bm.width() == 1 && bm.height() == 1); | |
| { | |
| SkAutoLockPixels alp(bm); | |
| REPORTER_ASSERT(reporter, bm.getAddr32(0, 0)[0] == 0x7fffffff); | |
| } | |
| success = stream.rewind(); | |
| REPORTER_ASSERT(reporter, success); | |
| if (!success) { | |
| continue; | |
| } | |
| // Test premultiplied. Once again, we know which color this should | |
| // result in. | |
| decoder->setRequireUnpremultipliedColors(false); | |
| success = decoder->decode(&stream, &bm, SkBitmap::kARGB_8888_Config, | |
| SkImageDecoder::kDecodePixels_Mode); | |
| REPORTER_ASSERT(reporter, success); | |
| if (!success) { | |
| continue; | |
| } | |
| REPORTER_ASSERT(reporter, bm.width() == 1 && bm.height() == 1); | |
| { | |
| SkAutoLockPixels alp(bm); | |
| REPORTER_ASSERT(reporter, bm.getAddr32(0, 0)[0] == 0x7f7f7f7f); | |
| } | |
| } | |
| } | |
| #endif // SK_BUILD_FOR_UNIX/ANDROID skbug.com/2388 | |
| #ifdef SK_DEBUG | |
| // Create a stream containing a bitmap encoded to Type type. | |
| static SkMemoryStream* create_image_stream(SkImageEncoder::Type type) { | |
| SkBitmap bm; | |
| const int size = 50; | |
| bm.allocN32Pixels(size, size); | |
| SkCanvas canvas(bm); | |
| SkPoint points[2] = { | |
| { SkIntToScalar(0), SkIntToScalar(0) }, | |
| { SkIntToScalar(size), SkIntToScalar(size) } | |
| }; | |
| SkColor colors[2] = { SK_ColorWHITE, SK_ColorBLUE }; | |
| SkShader* shader = SkGradientShader::CreateLinear(points, colors, NULL, | |
| SK_ARRAY_COUNT(colors), | |
| SkShader::kClamp_TileMode); | |
| SkPaint paint; | |
| paint.setShader(shader)->unref(); | |
| canvas.drawPaint(paint); | |
| // Now encode it to a stream. | |
| SkAutoTUnref<SkData> data(SkImageEncoder::EncodeData(bm, type, 100)); | |
| if (NULL == data.get()) { | |
| return NULL; | |
| } | |
| return SkNEW_ARGS(SkMemoryStream, (data.get())); | |
| } | |
| // For every format that supports tile based decoding, ensure that | |
| // calling decodeSubset will not fail if the caller has unreffed the | |
| // stream provided in buildTileIndex. | |
| // Only runs in debug mode since we are testing for a crash. | |
| static void test_stream_life() { | |
| const SkImageEncoder::Type gTypes[] = { | |
| #ifdef SK_BUILD_FOR_ANDROID | |
| SkImageEncoder::kJPEG_Type, | |
| SkImageEncoder::kPNG_Type, | |
| #endif | |
| SkImageEncoder::kWEBP_Type, | |
| }; | |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gTypes); ++i) { | |
| // SkDebugf("encoding to %i\n", i); | |
| SkAutoTUnref<SkMemoryStream> stream(create_image_stream(gTypes[i])); | |
| if (NULL == stream.get()) { | |
| SkDebugf("no stream\n"); | |
| continue; | |
| } | |
| SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(stream)); | |
| if (NULL == decoder.get()) { | |
| SkDebugf("no decoder\n"); | |
| continue; | |
| } | |
| int width, height; | |
| if (!decoder->buildTileIndex(stream.get(), &width, &height)) { | |
| SkDebugf("could not build a tile index\n"); | |
| continue; | |
| } | |
| // Now unref the stream to make sure it survives | |
| stream.reset(NULL); | |
| SkBitmap bm; | |
| decoder->decodeSubset(&bm, SkIRect::MakeWH(width, height), | |
| SkBitmap::kARGB_8888_Config); | |
| } | |
| } | |
| // Test inside SkScaledBitmapSampler.cpp | |
| extern void test_row_proc_choice(); | |
| #endif // SK_DEBUG | |
| DEF_TEST(ImageDecoding, reporter) { | |
| test_unpremul(reporter); | |
| #ifdef SK_DEBUG | |
| test_stream_life(); | |
| test_row_proc_choice(); | |
| #endif | |
| } | |
| // expected output for 8x8 bitmap | |
| static const int kExpectedWidth = 8; | |
| static const int kExpectedHeight = 8; | |
| static const SkColor kExpectedPixels[] = { | |
| 0xffbba570, 0xff395f5d, 0xffe25c39, 0xff197666, | |
| 0xff3cba27, 0xffdefcb0, 0xffc13874, 0xfffa0093, | |
| 0xffbda60e, 0xffc01db6, 0xff2bd688, 0xff9362d4, | |
| 0xffc641b2, 0xffa5cede, 0xff606eba, 0xff8f4bf3, | |
| 0xff3bf742, 0xff8f02a8, 0xff5509df, 0xffc7027e, | |
| 0xff24aa8a, 0xff886c96, 0xff625481, 0xff403689, | |
| 0xffc52152, 0xff78ccd6, 0xffdcb4ab, 0xff09d27d, | |
| 0xffca00f3, 0xff605d47, 0xff446fb2, 0xff576e46, | |
| 0xff273df9, 0xffb41a83, 0xfff812c3, 0xffccab67, | |
| 0xff034218, 0xff7db9a7, 0xff821048, 0xfffe4ab4, | |
| 0xff6fac98, 0xff941d27, 0xff5fe411, 0xfffbb283, | |
| 0xffd86e99, 0xff169162, 0xff71128c, 0xff39cab4, | |
| 0xffa7fe63, 0xff4c956b, 0xffbc22e0, 0xffb272e4, | |
| 0xff129f4a, 0xffe34513, 0xff3d3742, 0xffbd190a, | |
| 0xffb07222, 0xff2e23f8, 0xfff089d9, 0xffb35738, | |
| 0xffa86022, 0xff3340fe, 0xff95fe71, 0xff6a71df | |
| }; | |
| SK_COMPILE_ASSERT((kExpectedWidth * kExpectedHeight) | |
| == SK_ARRAY_COUNT(kExpectedPixels), array_size_mismatch); | |
| DEF_TEST(WebP, reporter) { | |
| const unsigned char encodedWebP[] = { | |
| 0x52, 0x49, 0x46, 0x46, 0x2c, 0x01, 0x00, 0x00, 0x57, 0x45, 0x42, 0x50, | |
| 0x56, 0x50, 0x38, 0x4c, 0x20, 0x01, 0x00, 0x00, 0x2f, 0x07, 0xc0, 0x01, | |
| 0x00, 0xff, 0x01, 0x45, 0x03, 0x00, 0xe2, 0xd5, 0xae, 0x60, 0x2b, 0xad, | |
| 0xd9, 0x68, 0x76, 0xb6, 0x8d, 0x6a, 0x1d, 0xc0, 0xe6, 0x19, 0xd6, 0x16, | |
| 0xb7, 0xb4, 0xef, 0xcf, 0xc3, 0x15, 0x6c, 0xb3, 0xbd, 0x77, 0x0d, 0x85, | |
| 0x6d, 0x1b, 0xa9, 0xb1, 0x2b, 0xdc, 0x3d, 0x83, 0xdb, 0x00, 0x00, 0xc8, | |
| 0x26, 0xe5, 0x01, 0x99, 0x8a, 0xd5, 0xdd, 0xfc, 0x82, 0xcd, 0xcd, 0x9a, | |
| 0x8c, 0x13, 0xcc, 0x1b, 0xba, 0xf5, 0x05, 0xdb, 0xee, 0x6a, 0xdb, 0x38, | |
| 0x60, 0xfe, 0x43, 0x2c, 0xd4, 0x6a, 0x99, 0x4d, 0xc6, 0xc0, 0xd3, 0x28, | |
| 0x1b, 0xc1, 0xb1, 0x17, 0x4e, 0x43, 0x0e, 0x3d, 0x27, 0xe9, 0xe4, 0x84, | |
| 0x4f, 0x24, 0x62, 0x69, 0x85, 0x43, 0x8d, 0xc2, 0x04, 0x00, 0x07, 0x59, | |
| 0x60, 0xfd, 0x8b, 0x4d, 0x60, 0x32, 0x72, 0xcf, 0x88, 0x0c, 0x2f, 0x2f, | |
| 0xad, 0x62, 0xbd, 0x27, 0x09, 0x16, 0x70, 0x78, 0x6c, 0xd9, 0x82, 0xef, | |
| 0x1a, 0xa2, 0xcc, 0xf0, 0xf1, 0x6f, 0xd8, 0x78, 0x2e, 0x39, 0xa1, 0xcf, | |
| 0x14, 0x4b, 0x89, 0xb4, 0x1b, 0x48, 0x15, 0x7c, 0x48, 0x6f, 0x8c, 0x20, | |
| 0xb7, 0x00, 0xcf, 0xfc, 0xdb, 0xd0, 0xe9, 0xe7, 0x42, 0x09, 0xa4, 0x03, | |
| 0x40, 0xac, 0xda, 0x40, 0x01, 0x00, 0x5f, 0xa1, 0x3d, 0x64, 0xe1, 0xf4, | |
| 0x03, 0x45, 0x29, 0xe0, 0xe2, 0x4a, 0xc3, 0xa2, 0xe8, 0xe0, 0x25, 0x12, | |
| 0x74, 0xc6, 0xe8, 0xfb, 0x93, 0x4f, 0x9f, 0x5e, 0xc0, 0xa6, 0x91, 0x1b, | |
| 0xa4, 0x24, 0x82, 0xc3, 0x61, 0x07, 0x4c, 0x49, 0x4f, 0x53, 0xae, 0x5f, | |
| 0x5d, 0x39, 0x36, 0xc0, 0x5b, 0x57, 0x54, 0x60, 0x10, 0x00, 0x00, 0xd1, | |
| 0x68, 0xb6, 0x6d, 0xdb, 0x36, 0x22, 0xfa, 0x1f, 0x35, 0x75, 0x22, 0xec, | |
| 0x31, 0xbc, 0x5d, 0x8f, 0x87, 0x53, 0xa2, 0x05, 0x8c, 0x2f, 0xcd, 0xa8, | |
| 0xa7, 0xf3, 0xa3, 0xbd, 0x83, 0x8b, 0x2a, 0xc8, 0x58, 0xf5, 0xac, 0x80, | |
| 0xe3, 0xfe, 0x66, 0xa4, 0x7c, 0x1b, 0x6c, 0xd1, 0xa9, 0xd8, 0x14, 0xd0, | |
| 0xc5, 0xb5, 0x39, 0x71, 0x97, 0x19, 0x19, 0x1b | |
| }; | |
| SkAutoDataUnref encoded(SkData::NewWithCopy(encodedWebP, | |
| sizeof(encodedWebP))); | |
| SkBitmap bm; | |
| bool success = SkInstallDiscardablePixelRef( | |
| SkDecodingImageGenerator::Create(encoded, | |
| SkDecodingImageGenerator::Options()), &bm); | |
| REPORTER_ASSERT(reporter, success); | |
| if (!success) { | |
| return; | |
| } | |
| SkAutoLockPixels alp(bm); | |
| bool rightSize = ((kExpectedWidth == bm.width()) | |
| && (kExpectedHeight == bm.height())); | |
| REPORTER_ASSERT(reporter, rightSize); | |
| if (rightSize) { | |
| bool error = false; | |
| const SkColor* correctPixel = kExpectedPixels; | |
| for (int y = 0; y < bm.height(); ++y) { | |
| for (int x = 0; x < bm.width(); ++x) { | |
| error |= (*correctPixel != bm.getColor(x, y)); | |
| ++correctPixel; | |
| } | |
| } | |
| REPORTER_ASSERT(reporter, !error); | |
| } | |
| } | |
| //////////////////////////////////////////////////////////////////////////////// | |
| // example of how Android will do this inside their BitmapFactory | |
| static SkPixelRef* install_pixel_ref(SkBitmap* bitmap, | |
| SkStreamRewindable* stream, | |
| int sampleSize, bool ditherImage) { | |
| SkASSERT(bitmap != NULL); | |
| SkASSERT(stream != NULL); | |
| SkASSERT(stream->rewind()); | |
| SkASSERT(stream->unique()); | |
| SkColorType colorType = bitmap->colorType(); | |
| SkDecodingImageGenerator::Options opts(sampleSize, ditherImage, colorType); | |
| if (SkInstallDiscardablePixelRef( | |
| SkDecodingImageGenerator::Create(stream, opts), bitmap)) { | |
| return bitmap->pixelRef(); | |
| } | |
| return NULL; | |
| } | |
| /** | |
| * A test for the SkDecodingImageGenerator::Create and | |
| * SkInstallDiscardablePixelRef functions. | |
| */ | |
| DEF_TEST(ImprovedBitmapFactory, reporter) { | |
| SkString resourcePath = skiatest::Test::GetResourcePath(); | |
| SkString path = SkOSPath::SkPathJoin( | |
| resourcePath.c_str(), "randPixels.png"); | |
| SkAutoTUnref<SkStreamRewindable> stream( | |
| SkStream::NewFromFile(path.c_str())); | |
| if (sk_exists(path.c_str())) { | |
| SkBitmap bm; | |
| SkAssertResult(bm.setInfo(SkImageInfo::MakeN32Premul(1, 1))); | |
| REPORTER_ASSERT(reporter, | |
| NULL != install_pixel_ref(&bm, stream.detach(), 1, true)); | |
| SkAutoLockPixels alp(bm); | |
| REPORTER_ASSERT(reporter, NULL != bm.getPixels()); | |
| } | |
| } | |
| //////////////////////////////////////////////////////////////////////////////// | |
| #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) | |
| static inline bool check_rounding(int value, int dividend, int divisor) { | |
| // returns true if the value is greater than floor(dividend/divisor) | |
| // and less than SkNextPow2(ceil(dividend - divisor)) | |
| return (((divisor * value) > (dividend - divisor)) | |
| && value <= SkNextPow2(((dividend - 1) / divisor) + 1)); | |
| } | |
| #endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX | |
| #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A) | |
| #define kBackwards_SkColorType kRGBA_8888_SkColorType | |
| #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A) | |
| #define kBackwards_SkColorType kBGRA_8888_SkColorType | |
| #else | |
| #error "SK_*32_SHFIT values must correspond to BGRA or RGBA byte order" | |
| #endif | |
| static inline const char* SkColorType_to_string(SkColorType colorType) { | |
| switch(colorType) { | |
| case kAlpha_8_SkColorType: return "Alpha_8"; | |
| case kRGB_565_SkColorType: return "RGB_565"; | |
| case kARGB_4444_SkColorType: return "ARGB_4444"; | |
| case kN32_SkColorType: return "N32"; | |
| case kBackwards_SkColorType: return "Backwards"; | |
| case kIndex_8_SkColorType: return "Index_8"; | |
| default: return "ERROR"; | |
| } | |
| } | |
| static inline const char* options_colorType( | |
| const SkDecodingImageGenerator::Options& opts) { | |
| if (opts.fUseRequestedColorType) { | |
| return SkColorType_to_string(opts.fRequestedColorType); | |
| } else { | |
| return "(none)"; | |
| } | |
| } | |
| static inline const char* yn(bool value) { | |
| if (value) { | |
| return "yes"; | |
| } else { | |
| return "no"; | |
| } | |
| } | |
| /** | |
| * Given either a SkStream or a SkData, try to decode the encoded | |
| * image using the specified options and report errors. | |
| */ | |
| static void test_options(skiatest::Reporter* reporter, | |
| const SkDecodingImageGenerator::Options& opts, | |
| SkStreamRewindable* encodedStream, | |
| SkData* encodedData, | |
| bool useData, | |
| const SkString& path) { | |
| SkBitmap bm; | |
| bool success = false; | |
| if (useData) { | |
| if (NULL == encodedData) { | |
| return; | |
| } | |
| success = SkInstallDiscardablePixelRef( | |
| SkDecodingImageGenerator::Create(encodedData, opts), &bm); | |
| } else { | |
| if (NULL == encodedStream) { | |
| return; | |
| } | |
| success = SkInstallDiscardablePixelRef( | |
| SkDecodingImageGenerator::Create(encodedStream->duplicate(), opts), &bm); | |
| } | |
| if (!success) { | |
| if (opts.fUseRequestedColorType | |
| && (kARGB_4444_SkColorType == opts.fRequestedColorType)) { | |
| return; // Ignore known conversion inabilities. | |
| } | |
| // If we get here, it's a failure and we will need more | |
| // information about why it failed. | |
| ERRORF(reporter, "Bounds decode failed [sampleSize=%d dither=%s " | |
| "colorType=%s %s]", opts.fSampleSize, yn(opts.fDitherImage), | |
| options_colorType(opts), path.c_str()); | |
| return; | |
| } | |
| #if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX) | |
| // Android is the only system that use Skia's image decoders in | |
| // production. For now, we'll only verify that samplesize works | |
| // on systems where it already is known to work. | |
| REPORTER_ASSERT(reporter, check_rounding(bm.height(), kExpectedHeight, | |
| opts.fSampleSize)); | |
| REPORTER_ASSERT(reporter, check_rounding(bm.width(), kExpectedWidth, | |
| opts.fSampleSize)); | |
| // The ImageDecoder API doesn't guarantee that SampleSize does | |
| // anything at all, but the decoders that this test excercises all | |
| // produce an output size in the following range: | |
| // (((sample_size * out_size) > (in_size - sample_size)) | |
| // && out_size <= SkNextPow2(((in_size - 1) / sample_size) + 1)); | |
| #endif // SK_BUILD_FOR_ANDROID || SK_BUILD_FOR_UNIX | |
| SkAutoLockPixels alp(bm); | |
| if (bm.getPixels() == NULL) { | |
| ERRORF(reporter, "Pixel decode failed [sampleSize=%d dither=%s " | |
| "colorType=%s %s]", opts.fSampleSize, yn(opts.fDitherImage), | |
| options_colorType(opts), path.c_str()); | |
| return; | |
| } | |
| SkBitmap::Config requestedConfig | |
| = SkColorTypeToBitmapConfig(opts.fRequestedColorType); | |
| REPORTER_ASSERT(reporter, | |
| (!opts.fUseRequestedColorType) | |
| || (bm.config() == requestedConfig)); | |
| // Condition under which we should check the decoding results: | |
| if ((SkBitmap::kARGB_8888_Config == bm.config()) | |
| && (!path.endsWith(".jpg")) // lossy | |
| && (opts.fSampleSize == 1)) { // scaled | |
| const SkColor* correctPixels = kExpectedPixels; | |
| SkASSERT(bm.height() == kExpectedHeight); | |
| SkASSERT(bm.width() == kExpectedWidth); | |
| int pixelErrors = 0; | |
| for (int y = 0; y < bm.height(); ++y) { | |
| for (int x = 0; x < bm.width(); ++x) { | |
| if (*correctPixels != bm.getColor(x, y)) { | |
| ++pixelErrors; | |
| } | |
| ++correctPixels; | |
| } | |
| } | |
| if (pixelErrors != 0) { | |
| ERRORF(reporter, "Pixel-level mismatch (%d of %d) " | |
| "[sampleSize=%d dither=%s colorType=%s %s]", | |
| pixelErrors, kExpectedHeight * kExpectedWidth, | |
| opts.fSampleSize, yn(opts.fDitherImage), | |
| options_colorType(opts), path.c_str()); | |
| } | |
| } | |
| } | |
| /** | |
| * SkDecodingImageGenerator has an Options struct which lets the | |
| * client of the generator set sample size, dithering, and bitmap | |
| * config. This test loops through many possible options and tries | |
| * them on a set of 5 small encoded images (each in a different | |
| * format). We test both SkData and SkStreamRewindable decoding. | |
| */ | |
| DEF_TEST(ImageDecoderOptions, reporter) { | |
| const char* files[] = { | |
| "randPixels.bmp", | |
| "randPixels.jpg", | |
| "randPixels.png", | |
| "randPixels.webp", | |
| #if !defined(SK_BUILD_FOR_WIN) | |
| // TODO(halcanary): Find out why this fails sometimes. | |
| "randPixels.gif", | |
| #endif | |
| }; | |
| SkString resourceDir = skiatest::Test::GetResourcePath(); | |
| if (!sk_exists(resourceDir.c_str())) { | |
| return; | |
| } | |
| int scaleList[] = {1, 2, 3, 4}; | |
| bool ditherList[] = {true, false}; | |
| SkColorType colorList[] = { | |
| kAlpha_8_SkColorType, | |
| kRGB_565_SkColorType, | |
| kARGB_4444_SkColorType, // Most decoders will fail on 4444. | |
| kN32_SkColorType | |
| // Note that indexed color is left out of the list. Lazy | |
| // decoding doesn't do indexed color. | |
| }; | |
| const bool useDataList[] = {true, false}; | |
| for (size_t fidx = 0; fidx < SK_ARRAY_COUNT(files); ++fidx) { | |
| SkString path = SkOSPath::SkPathJoin(resourceDir.c_str(), files[fidx]); | |
| if (!sk_exists(path.c_str())) { | |
| continue; | |
| } | |
| SkAutoDataUnref encodedData(SkData::NewFromFileName(path.c_str())); | |
| REPORTER_ASSERT(reporter, encodedData.get() != NULL); | |
| SkAutoTUnref<SkStreamRewindable> encodedStream( | |
| SkStream::NewFromFile(path.c_str())); | |
| REPORTER_ASSERT(reporter, encodedStream.get() != NULL); | |
| for (size_t i = 0; i < SK_ARRAY_COUNT(scaleList); ++i) { | |
| for (size_t j = 0; j < SK_ARRAY_COUNT(ditherList); ++j) { | |
| for (size_t m = 0; m < SK_ARRAY_COUNT(useDataList); ++m) { | |
| for (size_t k = 0; k < SK_ARRAY_COUNT(colorList); ++k) { | |
| SkDecodingImageGenerator::Options opts(scaleList[i], | |
| ditherList[j], | |
| colorList[k]); | |
| test_options(reporter, opts, encodedStream, encodedData, | |
| useDataList[m], path); | |
| } | |
| SkDecodingImageGenerator::Options options(scaleList[i], | |
| ditherList[j]); | |
| test_options(reporter, options, encodedStream, encodedData, | |
| useDataList[m], path); | |
| } | |
| } | |
| } | |
| } | |
| } |