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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
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#include "config.h"
#include "core/platform/image-decoders/webp/WEBPImageDecoder.h"
#include "RuntimeEnabledFeatures.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 "wtf/dtoa/utils.h"
#include <gtest/gtest.h>
using namespace WebCore;
using namespace WebKit;
namespace {
PassRefPtr<SharedBuffer> readFile(const char* fileName)
{
String filePath = Platform::current()->unitTestSupport()->webKitRootDir();
filePath.append(fileName);
return Platform::current()->unitTestSupport()->readFromFile(filePath);
}
PassOwnPtr<WEBPImageDecoder> createDecoder()
{
return adoptPtr(new WEBPImageDecoder(ImageSource::AlphaNotPremultiplied, ImageSource::GammaAndColorProfileApplied, ImageDecoder::noDecodedImageByteLimit));
}
unsigned hashSkBitmap(const SkBitmap& bitmap)
{
return StringHasher::hashMemory(bitmap.getPixels(), bitmap.getSize());
}
void createDecodingBaseline(SharedBuffer* data, Vector<unsigned>* baselineHashes)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
decoder->setData(data, true);
size_t frameCount = decoder->frameCount();
for (size_t i = 0; i < frameCount; ++i) {
ImageFrame* frame = decoder->frameBufferAtIndex(i);
baselineHashes->append(hashSkBitmap(frame->getSkBitmap()));
}
}
void testRandomFrameDecode(const char* webpFile)
{
SCOPED_TRACE(webpFile);
RefPtr<SharedBuffer> fullData = readFile(webpFile);
ASSERT_TRUE(fullData.get());
Vector<unsigned> baselineHashes;
createDecodingBaseline(fullData.get(), &baselineHashes);
size_t frameCount = baselineHashes.size();
// Random decoding should get the same results as sequential decoding.
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
decoder->setData(fullData.get(), true);
const size_t skippingStep = 5;
for (size_t i = 0; i < skippingStep; ++i) {
for (size_t j = i; j < frameCount; j += skippingStep) {
SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
ImageFrame* frame = decoder->frameBufferAtIndex(j);
EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
}
}
// Decoding in reverse order.
decoder = createDecoder();
decoder->setData(fullData.get(), true);
for (size_t i = frameCount; i; --i) {
SCOPED_TRACE(testing::Message() << "Reverse i:" << i);
ImageFrame* frame = decoder->frameBufferAtIndex(i - 1);
EXPECT_EQ(baselineHashes[i - 1], hashSkBitmap(frame->getSkBitmap()));
}
}
void testRandomDecodeAfterClearFrameBufferCache(const char* webpFile)
{
SCOPED_TRACE(webpFile);
RefPtr<SharedBuffer> data = readFile(webpFile);
ASSERT_TRUE(data.get());
Vector<unsigned> baselineHashes;
createDecodingBaseline(data.get(), &baselineHashes);
size_t frameCount = baselineHashes.size();
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
decoder->setData(data.get(), true);
for (size_t clearExceptFrame = 0; clearExceptFrame < frameCount; ++clearExceptFrame) {
decoder->clearCacheExceptFrame(clearExceptFrame);
const size_t skippingStep = 5;
for (size_t i = 0; i < skippingStep; ++i) {
for (size_t j = 0; j < frameCount; j += skippingStep) {
SCOPED_TRACE(testing::Message() << "Random i:" << i << " j:" << j);
ImageFrame* frame = decoder->frameBufferAtIndex(j);
EXPECT_EQ(baselineHashes[j], hashSkBitmap(frame->getSkBitmap()));
}
}
}
}
void testDecodeAfterReallocatingData(const char* webpFile)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile(webpFile);
ASSERT_TRUE(data.get());
// Parse from 'data'.
decoder->setData(data.get(), true);
size_t frameCount = decoder->frameCount();
// ... and then decode frames from 'reallocatedData'.
RefPtr<SharedBuffer> reallocatedData = data.get()->copy();
ASSERT_TRUE(reallocatedData.get());
data.clear();
decoder->setData(reallocatedData.get(), true);
for (size_t i = 0; i < frameCount; ++i) {
const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
}
}
void testInvalidImage(const char* webpFile)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile(webpFile);
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
EXPECT_EQ(0u, decoder->frameCount());
ImageFrame* frame = decoder->frameBufferAtIndex(0);
EXPECT_FALSE(frame);
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
}
} // namespace
class AnimatedWebPTests : public ::testing::Test {
protected:
virtual void SetUp()
{
// Enable animated WebP for all the tests.
WebCore::RuntimeEnabledFeatures::setAnimatedWebPEnabled(true);
}
};
TEST_F(AnimatedWebPTests, verifyAnimationParametersTransparentImage)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
const int canvasWidth = 11;
const int canvasHeight = 29;
const struct AnimParam {
int xOffset, yOffset, width, height;
ImageFrame::DisposalMethod disposalMethod;
ImageFrame::AlphaBlendSource alphaBlendSource;
unsigned duration;
bool hasAlpha;
} frameParameters[] = {
{ 0, 0, 11, 29, ImageFrame::DisposeKeep, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
{ 2, 10, 7, 17, ImageFrame::DisposeKeep, ImageFrame::BlendAtopPreviousFrame, 500u, true },
{ 2, 2, 7, 16, ImageFrame::DisposeKeep, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
};
for (size_t i = 0; i < ARRAY_SIZE(frameParameters); ++i) {
const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(canvasWidth, frame->getSkBitmap().width());
EXPECT_EQ(canvasHeight, frame->getSkBitmap().height());
EXPECT_EQ(frameParameters[i].xOffset, frame->originalFrameRect().x());
EXPECT_EQ(frameParameters[i].yOffset, frame->originalFrameRect().y());
EXPECT_EQ(frameParameters[i].width, frame->originalFrameRect().width());
EXPECT_EQ(frameParameters[i].height, frame->originalFrameRect().height());
EXPECT_EQ(frameParameters[i].disposalMethod, frame->disposalMethod());
EXPECT_EQ(frameParameters[i].alphaBlendSource, frame->alphaBlendSource());
EXPECT_EQ(frameParameters[i].duration, frame->duration());
EXPECT_EQ(frameParameters[i].hasAlpha, frame->hasAlpha());
}
EXPECT_EQ(ARRAY_SIZE(frameParameters), decoder->frameCount());
EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
}
TEST_F(AnimatedWebPTests, verifyAnimationParametersOpaqueFramesTransparentBackground)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated-opaque.webp");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
const int canvasWidth = 94;
const int canvasHeight = 87;
const struct AnimParam {
int xOffset, yOffset, width, height;
ImageFrame::DisposalMethod disposalMethod;
ImageFrame::AlphaBlendSource alphaBlendSource;
unsigned duration;
bool hasAlpha;
} frameParameters[] = {
{ 4, 10, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
{ 34, 30, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
{ 62, 50, 32, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
{ 10, 54, 32, 33, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopPreviousFrame, 1000u, true },
};
for (size_t i = 0; i < ARRAY_SIZE(frameParameters); ++i) {
const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(canvasWidth, frame->getSkBitmap().width());
EXPECT_EQ(canvasHeight, frame->getSkBitmap().height());
EXPECT_EQ(frameParameters[i].xOffset, frame->originalFrameRect().x());
EXPECT_EQ(frameParameters[i].yOffset, frame->originalFrameRect().y());
EXPECT_EQ(frameParameters[i].width, frame->originalFrameRect().width());
EXPECT_EQ(frameParameters[i].height, frame->originalFrameRect().height());
EXPECT_EQ(frameParameters[i].disposalMethod, frame->disposalMethod());
EXPECT_EQ(frameParameters[i].alphaBlendSource, frame->alphaBlendSource());
EXPECT_EQ(frameParameters[i].duration, frame->duration());
EXPECT_EQ(frameParameters[i].hasAlpha, frame->hasAlpha());
}
EXPECT_EQ(ARRAY_SIZE(frameParameters), decoder->frameCount());
EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
}
TEST_F(AnimatedWebPTests, verifyAnimationParametersBlendOverwrite)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated-no-blend.webp");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
const int canvasWidth = 94;
const int canvasHeight = 87;
const struct AnimParam {
int xOffset, yOffset, width, height;
ImageFrame::DisposalMethod disposalMethod;
ImageFrame::AlphaBlendSource alphaBlendSource;
unsigned duration;
bool hasAlpha;
} frameParameters[] = {
{ 4, 10, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
{ 34, 30, 33, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
{ 62, 50, 32, 32, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
{ 10, 54, 32, 33, ImageFrame::DisposeOverwriteBgcolor, ImageFrame::BlendAtopBgcolor, 1000u, true },
};
for (size_t i = 0; i < ARRAY_SIZE(frameParameters); ++i) {
const ImageFrame* const frame = decoder->frameBufferAtIndex(i);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(canvasWidth, frame->getSkBitmap().width());
EXPECT_EQ(canvasHeight, frame->getSkBitmap().height());
EXPECT_EQ(frameParameters[i].xOffset, frame->originalFrameRect().x());
EXPECT_EQ(frameParameters[i].yOffset, frame->originalFrameRect().y());
EXPECT_EQ(frameParameters[i].width, frame->originalFrameRect().width());
EXPECT_EQ(frameParameters[i].height, frame->originalFrameRect().height());
EXPECT_EQ(frameParameters[i].disposalMethod, frame->disposalMethod());
EXPECT_EQ(frameParameters[i].alphaBlendSource, frame->alphaBlendSource());
EXPECT_EQ(frameParameters[i].duration, frame->duration());
EXPECT_EQ(frameParameters[i].hasAlpha, frame->hasAlpha());
}
EXPECT_EQ(ARRAY_SIZE(frameParameters), decoder->frameCount());
EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
}
TEST_F(AnimatedWebPTests, parseAndDecodeByteByByte)
{
const struct TestImage {
const char* filename;
unsigned frameCount;
int repetitionCount;
} testImages[] = {
{ "/LayoutTests/fast/images/resources/webp-animated.webp", 3u, cAnimationLoopInfinite },
{ "/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp", 13u, 32000 },
};
for (size_t i = 0; i < ARRAY_SIZE(testImages); ++i) {
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile(testImages[i].filename);
ASSERT_TRUE(data.get());
size_t frameCount = 0;
size_t framesDecoded = 0;
// Pass data to decoder byte by byte.
for (size_t length = 1; length <= data->size(); ++length) {
RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), length);
decoder->setData(tempData.get(), length == data->size());
EXPECT_LE(frameCount, decoder->frameCount());
frameCount = decoder->frameCount();
ImageFrame* frame = decoder->frameBufferAtIndex(frameCount - 1);
if (frame && frame->status() == ImageFrame::FrameComplete && framesDecoded < frameCount)
++framesDecoded;
}
EXPECT_EQ(testImages[i].frameCount, decoder->frameCount());
EXPECT_EQ(testImages[i].frameCount, framesDecoded);
EXPECT_EQ(testImages[i].repetitionCount, decoder->repetitionCount());
}
}
TEST_F(AnimatedWebPTests, invalidImages)
{
// crbug.com/229641
testInvalidImage("/LayoutTests/fast/images/resources/invalid-animated-webp.webp");
// crbug.com/310257
testInvalidImage("/LayoutTests/fast/images/resources/invalid-animated-webp3.webp");
}
// Reproduce a crash that used to happen for a specific file with specific sequence of method calls.
TEST_F(AnimatedWebPTests, reproCrash)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/invalid_vp8_vp8x.webp");
ASSERT_TRUE(fullData.get());
// Parse partial data up to which error in bitstream is not detected.
const size_t partialSize = 32768;
ASSERT_GT(fullData->size(), partialSize);
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
decoder->setData(data.get(), false);
EXPECT_EQ(1u, decoder->frameCount());
// Parse full data now. The error in bitstream should now be detected.
decoder->setData(fullData.get(), true);
EXPECT_EQ(0u, decoder->frameCount());
ImageFrame* frame = decoder->frameBufferAtIndex(0);
EXPECT_FALSE(frame);
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
}
TEST_F(AnimatedWebPTests, progressiveDecode)
{
RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
ASSERT_TRUE(fullData.get());
const size_t fullLength = fullData->size();
OwnPtr<WEBPImageDecoder> decoder;
ImageFrame* frame;
Vector<unsigned> truncatedHashes;
Vector<unsigned> progressiveHashes;
// Compute hashes when the file is truncated.
const size_t increment = 1;
for (size_t i = 1; i <= fullLength; i += increment) {
decoder = createDecoder();
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
decoder->setData(data.get(), i == fullLength);
frame = decoder->frameBufferAtIndex(0);
if (!frame) {
truncatedHashes.append(0);
continue;
}
truncatedHashes.append(hashSkBitmap(frame->getSkBitmap()));
}
// Compute hashes when the file is progressively decoded.
decoder = createDecoder();
for (size_t i = 1; i <= fullLength; i += increment) {
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
decoder->setData(data.get(), i == fullLength);
frame = decoder->frameBufferAtIndex(0);
if (!frame) {
progressiveHashes.append(0);
continue;
}
progressiveHashes.append(hashSkBitmap(frame->getSkBitmap()));
}
bool match = true;
for (size_t i = 0; i < truncatedHashes.size(); ++i) {
if (truncatedHashes[i] != progressiveHashes[i]) {
match = false;
break;
}
}
EXPECT_TRUE(match);
}
TEST_F(AnimatedWebPTests, frameIsCompleteAndDuration)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
ASSERT_TRUE(data.get());
ASSERT_GE(data->size(), 10u);
RefPtr<SharedBuffer> tempData = SharedBuffer::create(data->data(), data->size() - 10);
decoder->setData(tempData.get(), false);
EXPECT_EQ(2u, decoder->frameCount());
EXPECT_FALSE(decoder->failed());
EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
EXPECT_EQ(1000, decoder->frameDurationAtIndex(0));
EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
EXPECT_EQ(500, decoder->frameDurationAtIndex(1));
decoder->setData(data.get(), true);
EXPECT_EQ(3u, decoder->frameCount());
EXPECT_TRUE(decoder->frameIsCompleteAtIndex(0));
EXPECT_EQ(1000, decoder->frameDurationAtIndex(0));
EXPECT_TRUE(decoder->frameIsCompleteAtIndex(1));
EXPECT_EQ(500, decoder->frameDurationAtIndex(1));
EXPECT_TRUE(decoder->frameIsCompleteAtIndex(2));
EXPECT_EQ(1000.0, decoder->frameDurationAtIndex(2));
}
TEST_F(AnimatedWebPTests, updateRequiredPreviousFrameAfterFirstDecode)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
ASSERT_TRUE(fullData.get());
// Give it data that is enough to parse but not decode in order to check the status
// of requiredPreviousFrameIndex before decoding.
size_t partialSize = 1;
do {
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
decoder->setData(data.get(), false);
++partialSize;
} while (!decoder->frameCount() || decoder->frameBufferAtIndex(0)->status() == ImageFrame::FrameEmpty);
EXPECT_EQ(kNotFound, decoder->frameBufferAtIndex(0)->requiredPreviousFrameIndex());
unsigned frameCount = decoder->frameCount();
for (size_t i = 1; i < frameCount; ++i)
EXPECT_EQ(i - 1, decoder->frameBufferAtIndex(i)->requiredPreviousFrameIndex());
decoder->setData(fullData.get(), true);
for (size_t i = 0; i < frameCount; ++i)
EXPECT_EQ(kNotFound, decoder->frameBufferAtIndex(i)->requiredPreviousFrameIndex());
}
TEST_F(AnimatedWebPTests, randomFrameDecode)
{
testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated.webp");
testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-opaque.webp");
testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-large.webp");
testRandomFrameDecode("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
}
TEST_F(AnimatedWebPTests, randomDecodeAfterClearFrameBufferCache)
{
testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated.webp");
testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-opaque.webp");
testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-large.webp");
testRandomDecodeAfterClearFrameBufferCache("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
}
TEST_F(AnimatedWebPTests, resumePartialDecodeAfterClearFrameBufferCache)
{
RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated-large.webp");
ASSERT_TRUE(fullData.get());
Vector<unsigned> baselineHashes;
createDecodingBaseline(fullData.get(), &baselineHashes);
size_t frameCount = baselineHashes.size();
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
// Let frame 0 be partially decoded.
size_t partialSize = 1;
do {
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
decoder->setData(data.get(), false);
++partialSize;
} while (!decoder->frameCount() || decoder->frameBufferAtIndex(0)->status() == ImageFrame::FrameEmpty);
// Skip to the last frame and clear.
decoder->setData(fullData.get(), true);
EXPECT_EQ(frameCount, decoder->frameCount());
ImageFrame* lastFrame = decoder->frameBufferAtIndex(frameCount - 1);
EXPECT_EQ(baselineHashes[frameCount - 1], hashSkBitmap(lastFrame->getSkBitmap()));
decoder->clearCacheExceptFrame(kNotFound);
// Resume decoding of the first frame.
ImageFrame* firstFrame = decoder->frameBufferAtIndex(0);
EXPECT_EQ(ImageFrame::FrameComplete, firstFrame->status());
EXPECT_EQ(baselineHashes[0], hashSkBitmap(firstFrame->getSkBitmap()));
}
TEST_F(AnimatedWebPTests, decodeAfterReallocatingData)
{
testDecodeAfterReallocatingData("/LayoutTests/fast/images/resources/webp-animated.webp");
testDecodeAfterReallocatingData("/LayoutTests/fast/images/resources/webp-animated-icc-xmp.webp");
}