Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp

-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-
-#include "core/platform/image-decoders/jpeg/JPEGImageDecoder.h"
-
-#include "platform/SharedBuffer.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebData.h"
-#include "public/platform/WebSize.h"
-#include "public/platform/WebUnitTestSupport.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/StringHasher.h"
-#include "wtf/Vector.h"
-
-#include <gtest/gtest.h>
-
-using namespace WebCore;
-using namespace blink;
-
-namespace {
-
-PassRefPtr<SharedBuffer> readFile(const char* fileName)
-{
-    String filePath = Platform::current()->unitTestSupport()->webKitRootDir();
-    filePath.append(fileName);
-
-    return Platform::current()->unitTestSupport()->readFromFile(filePath);
-}
-
-PassOwnPtr<JPEGImageDecoder> createDecoder(size_t maxDecodedBytes)
-{
-    return adoptPtr(new JPEGImageDecoder(ImageSource::AlphaNotPremultiplied, ImageSource::GammaAndColorProfileApplied, maxDecodedBytes));
-}
-
-} // namespace
-
-void downsample(size_t maxDecodedBytes, unsigned* outputWidth, unsigned* outputHeight, const char* imageFilePath)
-{
-    RefPtr<SharedBuffer> data = readFile(imageFilePath);
-    ASSERT_TRUE(data.get());
-
-    OwnPtr<JPEGImageDecoder> decoder = createDecoder(maxDecodedBytes);
-    decoder->setData(data.get(), true);
-
-    ImageFrame* frame = decoder->frameBufferAtIndex(0);
-    ASSERT_TRUE(frame);
-    *outputWidth = frame->getSkBitmap().width();
-    *outputHeight = frame->getSkBitmap().height();
-    EXPECT_EQ(IntSize(*outputWidth, *outputHeight), decoder->decodedSize());
-}
-
-// Tests failure on a too big image.
-TEST(JPEGImageDecoderTest, tooBig)
-{
-    OwnPtr<JPEGImageDecoder> decoder = createDecoder(100);
-    EXPECT_FALSE(decoder->setSize(10000, 10000));
-    EXPECT_TRUE(decoder->failed());
-}
-
-// Tests that JPEG decoder can downsample image whose width and height are multiple of 8,
-// to ensure we compute the correct decodedSize and pass correct parameters to libjpeg to
-// output image with the expected size.
-TEST(JPEGImageDecoderTest, downsampleImageSizeMultipleOf8)
-{
-    const char* jpegFile = "/LayoutTests/fast/images/resources/lenna.jpg"; // 256x256
-    unsigned outputWidth, outputHeight;
-
-    // 1/8 downsample.
-    downsample(40 * 40 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(32u, outputWidth);
-    EXPECT_EQ(32u, outputHeight);
-
-    // 2/8 downsample.
-    downsample(70 * 70 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(64u, outputWidth);
-    EXPECT_EQ(64u, outputHeight);
-
-    // 3/8 downsample.
-    downsample(100 * 100 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(96u, outputWidth);
-    EXPECT_EQ(96u, outputHeight);
-
-    // 4/8 downsample.
-    downsample(130 * 130 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(128u, outputWidth);
-    EXPECT_EQ(128u, outputHeight);
-
-    // 5/8 downsample.
-    downsample(170 * 170 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(160u, outputWidth);
-    EXPECT_EQ(160u, outputHeight);
-
-    // 6/8 downsample.
-    downsample(200 * 200 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(192u, outputWidth);
-    EXPECT_EQ(192u, outputHeight);
-
-    // 7/8 downsample.
-    downsample(230 * 230 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(224u, outputWidth);
-    EXPECT_EQ(224u, outputHeight);
-}
-
-// Tests that JPEG decoder can downsample image whose width and height are not multiple of 8.
-// Ensures that we round decodedSize and scale_num using the same algorithm as that of libjpeg.
-TEST(JPEGImageDecoderTest, downsampleImageSizeNotMultipleOf8)
-{
-    const char* jpegFile = "/LayoutTests/fast/images/resources/icc-v2-gbr.jpg"; // 275x207
-    unsigned outputWidth, outputHeight;
-
-    // 1/8 downsample.
-    downsample(40 * 40 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(35u, outputWidth);
-    EXPECT_EQ(26u, outputHeight);
-
-    // 2/8 downsample.
-    downsample(70 * 70 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(69u, outputWidth);
-    EXPECT_EQ(52u, outputHeight);
-
-    // 3/8 downsample.
-    downsample(100 * 100 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(104u, outputWidth);
-    EXPECT_EQ(78u, outputHeight);
-
-    // 4/8 downsample.
-    downsample(130 * 130 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(138u, outputWidth);
-    EXPECT_EQ(104u, outputHeight);
-
-    // 5/8 downsample.
-    downsample(170 * 170 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(172u, outputWidth);
-    EXPECT_EQ(130u, outputHeight);
-
-    // 6/8 downsample.
-    downsample(200 * 200 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(207u, outputWidth);
-    EXPECT_EQ(156u, outputHeight);
-
-    // 7/8 downsample.
-    downsample(230 * 230 * 4, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(241u, outputWidth);
-    EXPECT_EQ(182u, outputHeight);
-}
-
-// Tests that upsampling is not allowed.
-TEST(JPEGImageDecoderTest, upsample)
-{
-    const char* jpegFile = "/LayoutTests/fast/images/resources/lenna.jpg"; // 256x256
-    unsigned outputWidth, outputHeight;
-    downsample(1000 * 1000, &outputWidth, &outputHeight, jpegFile);
-    EXPECT_EQ(256u, outputWidth);
-    EXPECT_EQ(256u, outputHeight);
-}