#include "config.h"
#include "ImageSource.h"
#if USE(CG)
#include "ImageSourceCG.h"
#include "ImageOrientation.h"
#include "IntPoint.h"
#include "IntSize.h"
#include "MIMETypeRegistry.h"
#include "SharedBuffer.h"
#if !PLATFORM(IOS)
#include <ApplicationServices/ApplicationServices.h>
#else
#include <CoreGraphics/CGImagePrivate.h>
#include <CoreGraphics/CoreGraphics.h>
#include <ImageIO/CGImageSourcePrivate.h>
#include <ImageIO/ImageIO.h>
#include <wtf/RetainPtr.h>
#endif
namespace WebCore {
const CFStringRef WebCoreCGImagePropertyAPNGUnclampedDelayTime = CFSTR("UnclampedDelayTime");
const CFStringRef WebCoreCGImagePropertyAPNGDelayTime = CFSTR("DelayTime");
const CFStringRef WebCoreCGImagePropertyAPNGLoopCount = CFSTR("LoopCount");
const CFStringRef kCGImageSourceShouldPreferRGB32 = CFSTR("kCGImageSourceShouldPreferRGB32");
const CFStringRef kCGImageSourceSkipMetadata = CFSTR("kCGImageSourceSkipMetadata");
#if !PLATFORM(COCOA)
size_t sharedBufferGetBytesAtPosition(void* info, void* buffer, off_t position, size_t count)
{
SharedBuffer* sharedBuffer = static_cast<SharedBuffer*>(info);
size_t sourceSize = sharedBuffer->size();
if (position >= sourceSize)
return 0;
const char* source = sharedBuffer->data() + position;
size_t amount = std::min<size_t>(count, sourceSize - position);
memcpy(buffer, source, amount);
return amount;
}
void sharedBufferRelease(void* info)
{
SharedBuffer* sharedBuffer = static_cast<SharedBuffer*>(info);
sharedBuffer->deref();
}
#endif
ImageSource::ImageSource(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption)
: m_decoder(0)
#if PLATFORM(IOS)
, m_baseSubsampling(0)
, m_isProgressive(false)
#endif
{
}
ImageSource::~ImageSource()
{
clear(true);
}
void ImageSource::clear(bool destroyAllFrames, size_t, SharedBuffer* data, bool allDataReceived)
{
if (!destroyAllFrames)
return;
if (m_decoder) {
CFRelease(m_decoder);
m_decoder = 0;
}
if (data)
setData(data, allDataReceived);
}
#if !PLATFORM(IOS)
static CFDictionaryRef imageSourceOptions(ImageSource::ShouldSkipMetadata skipMetaData)
{
static CFDictionaryRef options;
if (!options) {
const unsigned numOptions = 3;
const CFBooleanRef imageSourceSkipMetadata = (skipMetaData == ImageSource::SkipMetadata) ? kCFBooleanTrue : kCFBooleanFalse;
const void* keys[numOptions] = { kCGImageSourceShouldCache, kCGImageSourceShouldPreferRGB32, kCGImageSourceSkipMetadata };
const void* values[numOptions] = { kCFBooleanTrue, kCFBooleanTrue, imageSourceSkipMetadata };
options = CFDictionaryCreate(NULL, keys, values, numOptions,
&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
}
return options;
}
#else
CFDictionaryRef ImageSource::imageSourceOptions(ShouldSkipMetadata skipMetaData, int requestedSubsampling) const
{
static CFDictionaryRef options[4] = {nullptr, nullptr, nullptr, nullptr};
int subsampling = std::min(3, m_isProgressive || requestedSubsampling < 0 ? 0 : (requestedSubsampling + m_baseSubsampling));
if (!options[subsampling]) {
int subsampleInt = 1 << subsampling; RetainPtr<CFNumberRef> subsampleNumber = adoptCF(CFNumberCreate(nullptr, kCFNumberIntType, &subsampleInt));
const CFIndex numOptions = 4;
const CFBooleanRef imageSourceSkipMetaData = (skipMetaData == ImageSource::SkipMetadata) ? kCFBooleanTrue : kCFBooleanFalse;
const void* keys[numOptions] = { kCGImageSourceShouldCache, kCGImageSourceShouldPreferRGB32, kCGImageSourceSubsampleFactor, kCGImageSourceSkipMetadata };
const void* values[numOptions] = { kCFBooleanTrue, kCFBooleanTrue, subsampleNumber.get(), imageSourceSkipMetaData };
options[subsampling] = CFDictionaryCreate(nullptr, keys, values, numOptions, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
}
return options[subsampling];
}
#endif
bool ImageSource::initialized() const
{
return m_decoder;
}
void ImageSource::setData(SharedBuffer* data, bool allDataReceived)
{
#if PLATFORM(COCOA)
if (!m_decoder)
m_decoder = CGImageSourceCreateIncremental(0);
CGImageSourceUpdateData(m_decoder, data->createCFData().get(), allDataReceived);
#else
if (!m_decoder) {
m_decoder = CGImageSourceCreateIncremental(0);
} else if (allDataReceived) {
#if !PLATFORM(WIN)
CFRelease(m_decoder);
m_decoder = CGImageSourceCreateIncremental(0);
#endif
}
data->ref();
CGDataProviderDirectCallbacks providerCallbacks = { 0, 0, 0, sharedBufferGetBytesAtPosition, sharedBufferRelease };
RetainPtr<CGDataProviderRef> dataProvider = adoptCF(CGDataProviderCreateDirect(data, data->size(), &providerCallbacks));
CGImageSourceUpdateDataProvider(m_decoder, dataProvider.get(), allDataReceived);
#endif
}
String ImageSource::filenameExtension() const
{
if (!m_decoder)
return String();
CFStringRef imageSourceType = CGImageSourceGetType(m_decoder);
return WebCore::preferredExtensionForImageSourceType(imageSourceType);
}
bool ImageSource::isSizeAvailable()
{
bool result = false;
CGImageSourceStatus imageSourceStatus = CGImageSourceGetStatus(m_decoder);
if (imageSourceStatus >= kCGImageStatusIncomplete) {
RetainPtr<CFDictionaryRef> image0Properties = adoptCF(CGImageSourceCopyPropertiesAtIndex(m_decoder, 0, imageSourceOptions(SkipMetadata)));
if (image0Properties) {
CFNumberRef widthNumber = (CFNumberRef)CFDictionaryGetValue(image0Properties.get(), kCGImagePropertyPixelWidth);
CFNumberRef heightNumber = (CFNumberRef)CFDictionaryGetValue(image0Properties.get(), kCGImagePropertyPixelHeight);
result = widthNumber && heightNumber;
}
}
return result;
}
static ImageOrientation orientationFromProperties(CFDictionaryRef imageProperties)
{
ASSERT(imageProperties);
CFNumberRef orientationProperty = (CFNumberRef)CFDictionaryGetValue(imageProperties, kCGImagePropertyOrientation);
if (!orientationProperty)
return DefaultImageOrientation;
int exifValue;
CFNumberGetValue(orientationProperty, kCFNumberIntType, &exifValue);
return ImageOrientation::fromEXIFValue(exifValue);
}
IntSize ImageSource::frameSizeAtIndex(size_t index, ImageOrientationDescription description) const
{
RetainPtr<CFDictionaryRef> properties = adoptCF(CGImageSourceCopyPropertiesAtIndex(m_decoder, index, imageSourceOptions(SkipMetadata)));
if (!properties)
return IntSize();
int w = 0, h = 0;
CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(properties.get(), kCGImagePropertyPixelWidth);
if (num)
CFNumberGetValue(num, kCFNumberIntType, &w);
num = (CFNumberRef)CFDictionaryGetValue(properties.get(), kCGImagePropertyPixelHeight);
if (num)
CFNumberGetValue(num, kCFNumberIntType, &h);
#if PLATFORM(IOS)
if (!m_isProgressive) {
CFDictionaryRef jfifProperties = static_cast<CFDictionaryRef>(CFDictionaryGetValue(properties.get(), kCGImagePropertyJFIFDictionary));
if (jfifProperties) {
CFBooleanRef isProgCFBool = static_cast<CFBooleanRef>(CFDictionaryGetValue(jfifProperties, kCGImagePropertyJFIFIsProgressive));
if (isProgCFBool)
m_isProgressive = CFBooleanGetValue(isProgCFBool);
}
}
if ((m_baseSubsampling == 0) && !m_isProgressive) {
IntSize subsampledSize(w, h);
const int cMaximumImageSizeBeforeSubsampling = 5 * 1024 * 1024;
while ((m_baseSubsampling < 3) && subsampledSize.width() * subsampledSize.height() > cMaximumImageSizeBeforeSubsampling) {
++m_baseSubsampling;
subsampledSize = frameSizeAtIndex(index, description.respectImageOrientation());
}
w = subsampledSize.width();
h = subsampledSize.height();
}
#endif
if ((description.respectImageOrientation() == RespectImageOrientation) && orientationFromProperties(properties.get()).usesWidthAsHeight())
return IntSize(h, w);
return IntSize(w, h);
}
ImageOrientation ImageSource::orientationAtIndex(size_t index) const
{
RetainPtr<CFDictionaryRef> properties = adoptCF(CGImageSourceCopyPropertiesAtIndex(m_decoder, index, imageSourceOptions(SkipMetadata)));
if (!properties)
return DefaultImageOrientation;
return orientationFromProperties(properties.get());
}
#if PLATFORM(IOS)
IntSize ImageSource::originalSize(RespectImageOrientationEnum shouldRespectOrientation) const
{
frameSizeAtIndex(0, shouldRespectOrientation);
RetainPtr<CFDictionaryRef> properties = adoptCF(CGImageSourceCopyPropertiesAtIndex(m_decoder, 0, imageSourceOptions(SkipMetadata, -1)));
if (!properties)
return IntSize();
int width = 0;
int height = 0;
CFNumberRef number = (CFNumberRef)CFDictionaryGetValue(properties.get(), kCGImagePropertyPixelWidth);
if (number)
CFNumberGetValue(number, kCFNumberIntType, &width);
number = static_cast<CFNumberRef>(CFDictionaryGetValue(properties.get(), kCGImagePropertyPixelHeight));
if (number)
CFNumberGetValue(number, kCFNumberIntType, &height);
if ((shouldRespectOrientation == RespectImageOrientation) && orientationFromProperties(properties.get()).usesWidthAsHeight())
return IntSize(height, width);
return IntSize(width, height);
}
#endif
IntSize ImageSource::size(ImageOrientationDescription description) const
{
return frameSizeAtIndex(0, description);
}
bool ImageSource::getHotSpot(IntPoint& hotSpot) const
{
RetainPtr<CFDictionaryRef> properties = adoptCF(CGImageSourceCopyPropertiesAtIndex(m_decoder, 0, imageSourceOptions(SkipMetadata)));
if (!properties)
return false;
int x = -1, y = -1;
CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(properties.get(), CFSTR("hotspotX"));
if (!num || !CFNumberGetValue(num, kCFNumberIntType, &x))
return false;
num = (CFNumberRef)CFDictionaryGetValue(properties.get(), CFSTR("hotspotY"));
if (!num || !CFNumberGetValue(num, kCFNumberIntType, &y))
return false;
if (x < 0 || y < 0)
return false;
hotSpot = IntPoint(x, y);
return true;
}
size_t ImageSource::bytesDecodedToDetermineProperties() const
{
return 13088;
}
int ImageSource::repetitionCount()
{
if (!initialized())
return cAnimationLoopOnce;
RetainPtr<CFDictionaryRef> properties = adoptCF(CGImageSourceCopyProperties(m_decoder, imageSourceOptions(SkipMetadata)));
if (!properties)
return cAnimationLoopOnce;
CFDictionaryRef gifProperties = (CFDictionaryRef)CFDictionaryGetValue(properties.get(), kCGImagePropertyGIFDictionary);
if (gifProperties) {
CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(gifProperties, kCGImagePropertyGIFLoopCount);
if (!num)
return cAnimationLoopOnce;
int loopCount;
CFNumberGetValue(num, kCFNumberIntType, &loopCount);
return loopCount ? loopCount : cAnimationLoopInfinite;
}
CFDictionaryRef pngProperties = (CFDictionaryRef)CFDictionaryGetValue(properties.get(), kCGImagePropertyPNGDictionary);
if (pngProperties) {
CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(pngProperties, WebCoreCGImagePropertyAPNGLoopCount);
if (!num)
return cAnimationLoopOnce;
int loopCount;
CFNumberGetValue(num, kCFNumberIntType, &loopCount);
return loopCount ? loopCount : cAnimationLoopInfinite;
}
return cAnimationNone;
}
size_t ImageSource::frameCount() const
{
return m_decoder ? CGImageSourceGetCount(m_decoder) : 0;
}
CGImageRef ImageSource::createFrameAtIndex(size_t index, float* scale)
{
UNUSED_PARAM(scale);
if (!initialized())
return 0;
#if !PLATFORM(IOS)
UNUSED_PARAM(scale);
RetainPtr<CGImageRef> image = adoptCF(CGImageSourceCreateImageAtIndex(m_decoder, index, imageSourceOptions(SkipMetadata)));
#else
int subsampling = scale ? static_cast<int>(log2f(1.0f / std::max(0.1f, std::min(1.0f, *scale)))) : -1;
RetainPtr<CGImageRef> image = adoptCF(CGImageSourceCreateImageAtIndex(m_decoder, index, imageSourceOptions(SkipMetadata, subsampling)));
#if COMPILER(CLANG)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
#endif
CGImageSetCachingFlags(image.get(), kCGImageCachingTemporary);
#if COMPILER(CLANG)
#pragma clang diagnostic pop
#endif
if (scale) {
if (subsampling > 0)
*scale = static_cast<float>(CGImageGetWidth(image.get())) / size(DoNotRespectImageOrientation).width();
else {
ASSERT(static_cast<int>(CGImageGetWidth(image.get())) == size(DoNotRespectImageOrientation).width());
*scale = 1;
}
}
#endif // !PLATFORM(IOS)
CFStringRef imageUTI = CGImageSourceGetType(m_decoder);
static const CFStringRef xbmUTI = CFSTR("public.xbitmap-image");
if (!imageUTI || !CFEqual(imageUTI, xbmUTI))
return image.leakRef();
const CGFloat maskingColors[6] = {255, 255, 255, 255, 255, 255};
RetainPtr<CGImageRef> maskedImage = adoptCF(CGImageCreateWithMaskingColors(image.get(), maskingColors));
if (!maskedImage)
return image.leakRef();
return maskedImage.leakRef();
}
bool ImageSource::frameIsCompleteAtIndex(size_t index)
{
ASSERT(frameCount());
CGImageSourceStatus frameStatus = CGImageSourceGetStatusAtIndex(m_decoder, index);
if (index < frameCount() - 1)
return frameStatus >= kCGImageStatusIncomplete;
return frameStatus == kCGImageStatusComplete;
}
float ImageSource::frameDurationAtIndex(size_t index)
{
if (!initialized())
return 0;
float duration = 0;
RetainPtr<CFDictionaryRef> properties = adoptCF(CGImageSourceCopyPropertiesAtIndex(m_decoder, index, imageSourceOptions(SkipMetadata)));
if (properties) {
CFDictionaryRef gifProperties = (CFDictionaryRef)CFDictionaryGetValue(properties.get(), kCGImagePropertyGIFDictionary);
if (gifProperties) {
if (CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(gifProperties, kCGImagePropertyGIFUnclampedDelayTime)) {
CFNumberGetValue(num, kCFNumberFloatType, &duration);
} else if (CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(gifProperties, kCGImagePropertyGIFDelayTime)) {
CFNumberGetValue(num, kCFNumberFloatType, &duration);
}
}
CFDictionaryRef pngProperties = (CFDictionaryRef)CFDictionaryGetValue(properties.get(), kCGImagePropertyPNGDictionary);
if (pngProperties) {
if (CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(pngProperties, WebCoreCGImagePropertyAPNGUnclampedDelayTime))
CFNumberGetValue(num, kCFNumberFloatType, &duration);
else if (CFNumberRef num = (CFNumberRef)CFDictionaryGetValue(pngProperties, WebCoreCGImagePropertyAPNGDelayTime))
CFNumberGetValue(num, kCFNumberFloatType, &duration);
}
}
if (duration < 0.011f)
return 0.100f;
return duration;
}
bool ImageSource::frameHasAlphaAtIndex(size_t index)
{
if (!m_decoder)
return false;
if (!frameIsCompleteAtIndex(index))
return true;
CFStringRef imageType = CGImageSourceGetType(m_decoder);
if (!imageType || CFEqual(imageType, CFSTR("public.jpeg")))
return false;
return true;
}
unsigned ImageSource::frameBytesAtIndex(size_t index) const
{
IntSize frameSize = frameSizeAtIndex(index, ImageOrientationDescription(RespectImageOrientation));
return frameSize.width() * frameSize.height() * 4;
}
}
#endif // USE(CG)