const ScaledImageFragment* ImageFrameGenerator::tryToDecodeAndScale(const SkISize& scaledSize)
{
RefPtr<SharedBuffer> data;
bool allDataReceived = false;
{
MutexLocker lock(m_dataMutex);
// FIXME: We should do a shallow copy instead. Now we're restricted by the API of SharedBuffer.
data = m_data->copy();
allDataReceived = m_allDataReceived;
}
OwnPtr<ImageDecoder> decoder(adoptPtr(ImageDecoder::create(*data.get(), ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied)));
if (!decoder && m_imageDecoderFactory)
decoder = m_imageDecoderFactory->create();
if (!decoder)
return 0;
decoder->setData(data.get(), allDataReceived);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
if (!frame || frame->status() == ImageFrame::FrameEmpty)
return 0;
bool isComplete = frame->status() == ImageFrame::FrameComplete;
SkBitmap fullSizeBitmap = frame->getSkBitmap();
ASSERT(fullSizeBitmap.width() == m_fullSize.width() && fullSizeBitmap.height() == m_fullSize.height());
const ScaledImageFragment* fullSizeImage = ImageDecodingStore::instance()->insertAndLockCache(
this, ScaledImageFragment::create(m_fullSize, fullSizeBitmap, isComplete));
if (m_fullSize == scaledSize)
return fullSizeImage;
return tryToScale(fullSizeImage, scaledSize);
}
template <J_COLOR_SPACE colorSpace> bool outputRows(JPEGImageReader* reader, ImageFrame& buffer)
{
JSAMPARRAY samples = reader->samples();
jpeg_decompress_struct* info = reader->info();
int width = info->output_width;
while (info->output_scanline < info->output_height) {
// jpeg_read_scanlines will increase the scanline counter, so we
// save the scanline before calling it.
int y = info->output_scanline;
// Request one scanline: returns 0 or 1 scanlines.
if (jpeg_read_scanlines(info, samples, 1) != 1)
return false;
#if USE(QCMSLIB)
if (reader->colorTransform() && colorSpace == JCS_RGB)
qcms_transform_data(reader->colorTransform(), *samples, *samples, width);
#endif
ImageFrame::PixelData* pixel = buffer.getAddr(0, y);
for (int x = 0; x < width; ++pixel, ++x)
setPixel<colorSpace>(buffer, pixel, samples, x);
}
buffer.setPixelsChanged(true);
return true;
}
sk_sp<SkImage> DeferredImageDecoder::createFrameAtIndex(size_t index) {
if (m_frameGenerator && m_frameGenerator->decodeFailed())
return nullptr;
prepareLazyDecodedFrames();
if (index < m_frameData.size()) {
DeferredFrameData* frameData = &m_frameData[index];
if (m_actualDecoder)
frameData->m_frameBytes = m_actualDecoder->frameBytesAtIndex(index);
else
frameData->m_frameBytes = m_size.area() * sizeof(ImageFrame::PixelData);
// ImageFrameGenerator has the latest known alpha state. There will be a
// performance boost if this frame is opaque.
DCHECK(m_frameGenerator);
return createFrameImageAtIndex(index, !m_frameGenerator->hasAlpha(index));
}
if (!m_actualDecoder || m_actualDecoder->failed())
return nullptr;
ImageFrame* frame = m_actualDecoder->frameBufferAtIndex(index);
if (!frame || frame->getStatus() == ImageFrame::FrameEmpty)
return nullptr;
return (frame->getStatus() == ImageFrame::FrameComplete)
? frame->finalizePixelsAndGetImage()
: SkImage::MakeFromBitmap(frame->bitmap());
}
ListesAuxShowListeImages::ListesAuxShowListeImages(wxWindow *parent, wxString itemSelected, int &nbImg)
: wxFrame(parent, wxID_ANY, wxEmptyString) {
try {
ObjPhotoGenealogy *objPhotoGenealogy = new ObjPhotoGenealogy();
vector<wxImage> imgVect;
imgVect = model->arrayImageMicroFromNomLatin(itemSelected);
wxArrayInt idVect = model->idImageMicroArrayFromNomLatin(itemSelected);
for (int ijk = 0; ijk < imgVect.size(); ijk++) {
wxImage imgAux = imgVect[ijk];
wxString title = objPhotoGenealogy->getFullNomFromIdPhoto(idVect[ijk]);
wxRect rect = parent->GetScreenRect();
int x0 = rect.x ;
int y0 = rect.y ;
int w0 = rect.width ;
int xPos = x0+w0+x0+(nbImg+ijk)*16;
int yPos = y0+(nbImg+ijk)*16;
ImageFrame *imageFrame = new ImageFrame(parent, imgAux, title, wxPoint(xPos, yPos), wxDEFAULT_FRAME_STYLE);
imageFrame->SetBackgroundColour(Couleurs::backgColor);
imageFrame->Show();
}
nbImg = nbImg + (int)imgVect.size();
} catch (const exception &e) {
Aux::logsStr("", e.what(), logPut);
}
}
bool ImageSource::frameHasAlphaAtIndex(size_t index)
{
#ifdef ANDROID_ANIMATED_GIF
if (m_decoder.m_gifDecoder) {
ImageFrame* buffer =
m_decoder.m_gifDecoder->frameBufferAtIndex(index);
if (!buffer || buffer->status() == ImageFrame::FrameEmpty)
return false;
return buffer->hasAlpha();
}
#else
SkASSERT(0 == index);
#endif
if (NULL == m_decoder.m_image)
return true; // if we're not sure, assume the worse-case
const PrivateAndroidImageSourceRec& decoder = *m_decoder.m_image;
// if we're 16bit, we know even without all the data available
if (decoder.bitmap().getConfig() == SkBitmap::kRGB_565_Config)
return false;
if (!decoder.fAllDataReceived)
return true; // if we're not sure, assume the worse-case
return !decoder.bitmap().isOpaque();
}
void WEBPImageDecoder::applyColorProfile(const uint8_t* data, size_t size, ImageFrame& buffer)
{
int width;
int decodedHeight;
if (!WebPIDecGetRGB(m_decoder, &decodedHeight, &width, 0, 0))
return; // See also https://bugs.webkit.org/show_bug.cgi?id=74062
if (decodedHeight <= 0)
return;
if (!m_haveReadProfile) {
readColorProfile(data, size);
m_haveReadProfile = true;
}
ASSERT(width == scaledSize().width());
ASSERT(decodedHeight <= scaledSize().height());
for (int y = m_decodedHeight; y < decodedHeight; ++y) {
uint8_t* row = reinterpret_cast<uint8_t*>(buffer.getAddr(0, y));
if (qcms_transform* transform = colorTransform())
qcms_transform_data_type(transform, row, row, width, QCMS_OUTPUT_RGBX);
uint8_t* pixel = row;
for (int x = 0; x < width; ++x, pixel += 4)
buffer.setRGBA(x, y, pixel[0], pixel[1], pixel[2], pixel[3]);
}
m_decodedHeight = decodedHeight;
}
TEST(GIFImageDecoderTest, parseAndDecodeByteByByte)
{
OwnPtr<GIFImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated-gif-with-offsets.gif");
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(5u, decoder->frameCount());
EXPECT_EQ(5u, framesDecoded);
EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
}
TEST(GIFImageDecoderTest, resumePartialDecodeAfterClearFrameBufferCache)
{
RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/animated-10color.gif");
ASSERT_TRUE(fullData.get());
Vector<unsigned> baselineHashes;
createDecodingBaseline(fullData.get(), &baselineHashes);
size_t frameCount = baselineHashes.size();
OwnPtr<GIFImageDecoder> 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()));
}
bool DeferredImageDecoder::createFrameAtIndex(size_t index, SkBitmap* bitmap)
{
prepareLazyDecodedFrames();
if (index < m_frameData.size()) {
// ImageFrameGenerator has the latest known alpha state. There will
// be a performance boost if this frame is opaque.
*bitmap = createBitmap(index);
if (m_frameGenerator->hasAlpha(index)) {
m_frameData[index].m_hasAlpha = true;
bitmap->setAlphaType(kPremul_SkAlphaType);
} else {
m_frameData[index].m_hasAlpha = false;
bitmap->setAlphaType(kOpaque_SkAlphaType);
}
m_frameData[index].m_frameBytes = m_size.area() * sizeof(ImageFrame::PixelData);
return true;
}
if (m_actualDecoder) {
ImageFrame* buffer = m_actualDecoder->frameBufferAtIndex(index);
if (!buffer || buffer->status() == ImageFrame::FrameEmpty)
return false;
*bitmap = buffer->bitmap();
return true;
}
return false;
}
// Reproduce a crash that used to happen for a specific file with specific sequence of method calls.
TEST(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());
ImageFrame* frame = decoder->frameBufferAtIndex(0);
ASSERT_TRUE(frame);
EXPECT_EQ(ImageFrame::FramePartial, frame->status());
EXPECT_FALSE(decoder->failed());
// Parse full data now. The error in bitstream should now be detected.
decoder->setData(fullData.get(), true);
EXPECT_EQ(1u, decoder->frameCount());
frame = decoder->frameBufferAtIndex(0);
ASSERT_TRUE(frame);
EXPECT_EQ(ImageFrame::FramePartial, frame->status());
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
EXPECT_TRUE(decoder->failed());
}
void NotificationImageLoader::didFinishLoading(unsigned long resourceIdentifier,
double finishTime) {
// If this has been stopped it is not desirable to trigger further work,
// there is a shutdown of some sort in progress.
if (m_stopped)
return;
DEFINE_THREAD_SAFE_STATIC_LOCAL(
CustomCountHistogram, finishedTimeHistogram,
new CustomCountHistogram("Notifications.Icon.LoadFinishTime", 1,
1000 * 60 * 60 /* 1 hour max */,
50 /* buckets */));
finishedTimeHistogram.count(monotonicallyIncreasingTimeMS() - m_startTime);
if (m_data) {
DEFINE_THREAD_SAFE_STATIC_LOCAL(
CustomCountHistogram, fileSizeHistogram,
new CustomCountHistogram("Notifications.Icon.FileSize", 1,
10000000 /* ~10mb max */, 50 /* buckets */));
fileSizeHistogram.count(m_data->size());
std::unique_ptr<ImageDecoder> decoder = ImageDecoder::create(
m_data, true /* dataComplete */, ImageDecoder::AlphaPremultiplied,
ImageDecoder::ColorSpaceApplied);
if (decoder) {
// The |ImageFrame*| is owned by the decoder.
ImageFrame* imageFrame = decoder->frameBufferAtIndex(0);
if (imageFrame) {
(*m_imageCallback)(imageFrame->bitmap());
return;
}
}
}
runCallbackWithEmptyBitmap();
}
bool ImageFrameGenerator::decode(size_t index, ImageDecoder** decoder, SkBitmap* bitmap)
{
TRACE_EVENT2("blink", "ImageFrameGenerator::decode", "width", m_fullSize.width(), "height", m_fullSize.height());
ASSERT(decoder);
SharedBuffer* data = 0;
bool allDataReceived = false;
bool newDecoder = false;
m_data.data(&data, &allDataReceived);
// Try to create an ImageDecoder if we are not given one.
if (!*decoder) {
newDecoder = true;
if (m_imageDecoderFactory)
*decoder = m_imageDecoderFactory->create().leakPtr();
if (!*decoder)
*decoder = ImageDecoder::create(*data, ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied).leakPtr();
if (!*decoder)
return false;
}
if (!m_isMultiFrame && newDecoder && allDataReceived) {
// If we're using an external memory allocator that means we're decoding
// directly into the output memory and we can save one memcpy.
ASSERT(m_externalAllocator.get());
(*decoder)->setMemoryAllocator(m_externalAllocator.get());
}
(*decoder)->setData(data, allDataReceived);
ImageFrame* frame = (*decoder)->frameBufferAtIndex(index);
// For multi-frame image decoders, we need to know how many frames are
// in that image in order to release the decoder when all frames are
// decoded. frameCount() is reliable only if all data is received and set in
// decoder, particularly with GIF.
if (allDataReceived)
m_frameCount = (*decoder)->frameCount();
(*decoder)->setData(0, false); // Unref SharedBuffer from ImageDecoder.
(*decoder)->clearCacheExceptFrame(index);
(*decoder)->setMemoryAllocator(0);
if (!frame || frame->status() == ImageFrame::FrameEmpty)
return false;
// A cache object is considered complete if we can decode a complete frame.
// Or we have received all data. The image might not be fully decoded in
// the latter case.
const bool isDecodeComplete = frame->status() == ImageFrame::FrameComplete || allDataReceived;
SkBitmap fullSizeBitmap = frame->getSkBitmap();
if (!fullSizeBitmap.isNull())
{
ASSERT(fullSizeBitmap.width() == m_fullSize.width() && fullSizeBitmap.height() == m_fullSize.height());
setHasAlpha(index, !fullSizeBitmap.isOpaque());
}
*bitmap = fullSizeBitmap;
return isDecodeComplete;
}
bool ImageSource::frameIsCompleteAtIndex(size_t index)
{
if (!m_decoder)
return false;
ImageFrame* buffer = m_decoder->frameBufferAtIndex(index);
return buffer && buffer->status() == ImageFrame::FrameComplete;
}
void GIFImageDecoder::initializeNewFrame(size_t index)
{
ImageFrame* buffer = &m_frameBufferCache[index];
const GIFFrameContext* frameContext = m_reader->frameContext(index);
buffer->setOriginalFrameRect(intersection(frameContext->frameRect(), IntRect(IntPoint(), size())));
buffer->setDuration(frameContext->delayTime());
buffer->setDisposalMethod(frameContext->disposalMethod());
buffer->setRequiredPreviousFrameIndex(findRequiredPreviousFrame(index, false));
}
TEST(GIFImageDecoderTest, decodeTwoFrames)
{
OwnPtr<GIFImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
ImageFrame* frame = decoder->frameBufferAtIndex(0);
uint32_t generationID0 = frame->getSkBitmap().getGenerationID();
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(16, frame->getSkBitmap().width());
EXPECT_EQ(16, frame->getSkBitmap().height());
frame = decoder->frameBufferAtIndex(1);
uint32_t generationID1 = frame->getSkBitmap().getGenerationID();
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(16, frame->getSkBitmap().width());
EXPECT_EQ(16, frame->getSkBitmap().height());
EXPECT_TRUE(generationID0 != generationID1);
EXPECT_EQ(2u, decoder->frameCount());
EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
}
ImageFrame* ICOImageDecoder::frameBufferAtIndex(size_t index)
{
// Ensure |index| is valid.
if (index >= frameCount())
return 0;
ImageFrame* buffer = &m_frameBufferCache[index];
if (!buffer->isComplete())
decode(index, false);
return buffer;
}
void VisualOdometry::PlotTracking(const ImageFrame &frame0,
const ImageFrame &frame1,
const std::vector<cv::DMatch> &matches) {
cv::Mat output_img = frame0.GetImage().clone();
int thickness = 2;
for (int i = 0; i < matches.size(); ++i) {
line(output_img, frame0.keypoints()[matches[i].trainIdx].pt,
frame1.keypoints()[matches[i].queryIdx].pt, cv::Scalar(255, 0, 0),
thickness);
}
cv::imshow("tracking_result", output_img);
cv::waitKey(tracking_wait_time_);
}
bool ImageSource::frameIsCompleteAtIndex(size_t index)
{
#ifdef ANDROID_ANIMATED_GIF
if (m_decoder.m_gifDecoder) {
ImageFrame* buffer =
m_decoder.m_gifDecoder->frameBufferAtIndex(index);
return buffer && buffer->status() == ImageFrame::FrameComplete;
}
#else
SkASSERT(0 == index);
#endif
return m_decoder.m_image && m_decoder.m_image->fAllDataReceived;
}
static bool decodeBitmap(const void* data, size_t length, SkBitmap* result)
{
RefPtr<SharedBuffer> buffer = SharedBuffer::create(static_cast<const char*>(data), length);
OwnPtr<ImageDecoder> imageDecoder = ImageDecoder::create(*buffer, ImageDecoder::AlphaPremultiplied, ImageDecoder::GammaAndColorProfileIgnored);
if (!imageDecoder)
return false;
imageDecoder->setData(buffer.get(), true);
ImageFrame* frame = imageDecoder->frameBufferAtIndex(0);
if (!frame)
return true;
*result = frame->getSkBitmap();
return true;
}
bool GraphicsContext3D::ImageExtractor::extractImage(bool premultiplyAlpha, bool ignoreGammaAndColorProfile)
{
if (!m_image)
return false;
m_skiaImage = m_image->nativeImageForCurrentFrame();
m_alphaOp = AlphaDoNothing;
bool hasAlpha = m_skiaImage ? !m_skiaImage->bitmap().isOpaque() : true;
if ((!m_skiaImage || ignoreGammaAndColorProfile || (hasAlpha && !premultiplyAlpha)) && m_image->data()) {
// Attempt to get raw unpremultiplied image data.
OwnPtr<ImageDecoder> decoder(ImageDecoder::create(
*(m_image->data()), ImageSource::AlphaNotPremultiplied,
ignoreGammaAndColorProfile ? ImageSource::GammaAndColorProfileIgnored : ImageSource::GammaAndColorProfileApplied));
if (!decoder)
return false;
decoder->setData(m_image->data(), true);
if (!decoder->frameCount())
return false;
ImageFrame* frame = decoder->frameBufferAtIndex(0);
if (!frame || frame->status() != ImageFrame::FrameComplete)
return false;
hasAlpha = frame->hasAlpha();
m_nativeImage = adoptPtr(frame->asNewNativeImage());
if (!m_nativeImage.get() || !m_nativeImage->isDataComplete() || !m_nativeImage->bitmap().width() || !m_nativeImage->bitmap().height())
return false;
SkBitmap::Config skiaConfig = m_nativeImage->bitmap().config();
if (skiaConfig != SkBitmap::kARGB_8888_Config)
return false;
m_skiaImage = m_nativeImage.get();
if (hasAlpha && premultiplyAlpha)
m_alphaOp = AlphaDoPremultiply;
} else if (!premultiplyAlpha && hasAlpha) {
// 1. For texImage2D with HTMLVideoElment input, assume no PremultiplyAlpha had been applied and the alpha value for each pixel is 0xFF
// which is true at present and may be changed in the future and needs adjustment accordingly.
// 2. For texImage2D with HTMLCanvasElement input in which Alpha is already Premultiplied in this port,
// do AlphaDoUnmultiply if UNPACK_PREMULTIPLY_ALPHA_WEBGL is set to false.
if (m_imageHtmlDomSource != HtmlDomVideo)
m_alphaOp = AlphaDoUnmultiply;
}
if (!m_skiaImage)
return false;
m_imageSourceFormat = SK_B32_SHIFT ? DataFormatRGBA8 : DataFormatBGRA8;
m_imageWidth = m_skiaImage->bitmap().width();
m_imageHeight = m_skiaImage->bitmap().height();
if (!m_imageWidth || !m_imageHeight)
return false;
m_imageSourceUnpackAlignment = 0;
m_skiaImage->bitmap().lockPixels();
m_imagePixelData = m_skiaImage->bitmap().getPixels();
return true;
}
TEST(GIFImageDecoderTest, progressiveDecode)
{
RefPtr<SharedBuffer> fullData = readFile("/Source/web/tests/data/radient.gif");
ASSERT_TRUE(fullData.get());
const size_t fullLength = fullData->size();
OwnPtr<GIFImageDecoder> 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();
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
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()));
}
EXPECT_EQ(cAnimationNone, decoder->repetitionCount());
bool match = true;
for (size_t i = 0; i < truncatedHashes.size(); ++i) {
if (truncatedHashes[i] != progressiveHashes[i]) {
match = false;
break;
}
}
EXPECT_TRUE(match);
}
// Test if a BMP decoder returns a proper error while decoding an empty image.
TEST(BMPImageDecoderTest, emptyImage)
{
const char* bmpFile = "/LayoutTests/fast/images/resources/0x0.bmp"; // 0x0
RefPtr<SharedBuffer> data = readFile(bmpFile);
ASSERT_TRUE(data.get());
OwnPtr<ImageDecoder> decoder = createDecoder();
decoder->setData(data.get(), true);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
ASSERT_TRUE(frame);
EXPECT_EQ(ImageFrame::FrameEmpty, frame->status());
EXPECT_TRUE(decoder->failed());
}
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());
}
ImageFrame* BMPImageDecoder::frameBufferAtIndex(size_t index)
{
if (index)
return 0;
if (m_frameBufferCache.isEmpty()) {
m_frameBufferCache.resize(1);
m_frameBufferCache.first().setPremultiplyAlpha(m_premultiplyAlpha);
}
ImageFrame* buffer = &m_frameBufferCache.first();
if (buffer->status() != ImageFrame::FrameComplete)
decode(false);
return buffer;
}
ImageFrame* ImageDecoder::frameBufferAtIndex(size_t index)
{
if (index >= frameCount())
return 0;
ImageFrame* frame = &m_frameBufferCache[index];
if (frame->status() != ImageFrame::FrameComplete) {
PlatformInstrumentation::willDecodeImage(filenameExtension());
decode(index);
PlatformInstrumentation::didDecodeImage();
}
frame->notifyBitmapIfPixelsChanged();
return frame;
}
TEST(AnimatedWebPTests, uniqueGenerationIDs)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
uint32_t generationID0 = frame->getSkBitmap().getGenerationID();
frame = decoder->frameBufferAtIndex(1);
uint32_t generationID1 = frame->getSkBitmap().getGenerationID();
EXPECT_TRUE(generationID0 != generationID1);
}
TEST(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(BMPImageDecoderTest, parseAndDecode)
{
const char* bmpFile = "/LayoutTests/fast/images/resources/lenna.bmp"; // 256x256
RefPtr<SharedBuffer> data = readFile(bmpFile);
ASSERT_TRUE(data.get());
OwnPtr<ImageDecoder> decoder = createDecoder();
decoder->setData(data.get(), true);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
ASSERT_TRUE(frame);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(256, frame->getSkBitmap().width());
EXPECT_EQ(256, frame->getSkBitmap().height());
EXPECT_FALSE(decoder->failed());
}
static bool decodeBitmap(const void* data, size_t length, SkBitmap* result)
{
std::unique_ptr<ImageDecoder> imageDecoder = ImageDecoder::create(static_cast<const char*>(data), length,
ImageDecoder::AlphaPremultiplied, ImageDecoder::GammaAndColorProfileIgnored);
if (!imageDecoder)
return false;
// No need to copy the data; this decodes immediately.
RefPtr<SegmentReader> segmentReader = SegmentReader::createFromSkData(adoptRef(SkData::NewWithoutCopy(data, length)));
imageDecoder->setData(segmentReader.release(), true);
ImageFrame* frame = imageDecoder->frameBufferAtIndex(0);
if (!frame)
return true;
*result = frame->bitmap();
return true;
}
bool JPEGImageDecoder::outputScanlines(ImageFrame& buffer)
{
JSAMPARRAY samples = m_reader->samples();
jpeg_decompress_struct* info = m_reader->info();
int width = isScaled ? m_scaledColumns.size() : info->output_width;
while (info->output_scanline < info->output_height) {
// jpeg_read_scanlines will increase the scanline counter, so we
// save the scanline before calling it.
int sourceY = info->output_scanline;
/* Request one scanline. Returns 0 or 1 scanlines. */
if (jpeg_read_scanlines(info, samples, 1) != 1)
return false;
int destY = scaledY(sourceY);
if (destY < 0)
continue;
#if USE(QCMSLIB)
if (m_reader->colorTransform() && colorSpace == JCS_RGB)
qcms_transform_data(m_reader->colorTransform(), *samples, *samples, info->output_width);
#endif
ImageFrame::PixelData* currentAddress = buffer.getAddr(0, destY);
for (int x = 0; x < width; ++x) {
setPixel<colorSpace>(buffer, currentAddress, samples, isScaled ? m_scaledColumns[x] : x);
++currentAddress;
}
}
return true;
}
