bool JpegContent::loadFromData(const QByteArray& data)
{
Exiv2::Image::AutoPtr image;
Exiv2ImageLoader loader;
if (!loader.load(data)) {
qCritical() << "Could not load image with Exiv2, reported error:" << loader.errorMessage();
}
image = loader.popImage();
return loadFromData(data, image.get());
}
void CmsProfileTest::testLoadFromExiv2Image()
{
QFETCH(QString, fileName);
Exiv2::Image::AutoPtr image;
{
QByteArray data;
QString path = pathForTestFile(fileName);
qWarning() << path;
QFile file(path);
QVERIFY(file.open(QIODevice::ReadOnly));
data = file.readAll();
Exiv2ImageLoader loader;
QVERIFY(loader.load(data));
image = loader.popImage();
}
Cms::Profile::Ptr ptr = Cms::Profile::loadFromExiv2Image(image.get());
QVERIFY(!ptr.isNull());
}
bool loadMetaInfo()
{
LOG("mFormatHint" << mFormatHint);
QBuffer buffer;
buffer.setBuffer(&mData);
buffer.open(QIODevice::ReadOnly);
#ifdef KDCRAW_FOUND
if (KDcrawIface::KDcraw::rawFilesList().contains(QString(mFormatHint))) {
QByteArray previewData;
// if the image is in format supported by dcraw, fetch its embedded preview
mJpegContent.reset(new JpegContent());
// use KDcraw for getting the embedded preview
// KDcraw functionality cloned locally (temp. solution)
bool ret = KDcrawIface::KDcraw::loadEmbeddedPreview(previewData, buffer);
QImage originalImage;
if (!ret || !originalImage.loadFromData(previewData) || qMin(originalImage.width(), originalImage.height()) < MIN_PREV_SIZE) {
// if the embedded preview loading failed or gets just a small image, load
// half preview instead. That's slower but it works even for images containing
// small (160x120px) or none embedded preview.
if (!KDcrawIface::KDcraw::loadHalfPreview(previewData, buffer)) {
qWarning() << "unable to get half preview for " << q->document()->url().fileName();
return false;
}
}
buffer.close();
// now it's safe to replace mData with the jpeg data
mData = previewData;
// need to fill mFormat so gwenview can tell the type when trying to save
mFormat = mFormatHint;
} else {
#else
{
#endif
QImageReader reader(&buffer, mFormatHint);
mImageSize = reader.size();
if (!reader.canRead()) {
qWarning() << "QImageReader::read() using format hint" << mFormatHint << "failed:" << reader.errorString();
if (buffer.pos() != 0) {
qWarning() << "A bad Qt image decoder moved the buffer to" << buffer.pos() << "in a call to canRead()! Rewinding.";
buffer.seek(0);
}
reader.setFormat(QByteArray());
// Set buffer again, otherwise QImageReader won't restart from scratch
reader.setDevice(&buffer);
if (!reader.canRead()) {
qWarning() << "QImageReader::read() without format hint failed:" << reader.errorString();
return false;
}
qWarning() << "Image format is actually" << reader.format() << "not" << mFormatHint;
}
mFormat = reader.format();
if (mFormat == "jpg") {
// if mFormatHint was "jpg", then mFormat is "jpg", but the rest of
// Gwenview code assumes JPEG images have "jpeg" format.
mFormat = "jpeg";
}
}
LOG("mFormat" << mFormat);
GV_RETURN_VALUE_IF_FAIL(!mFormat.isEmpty(), false);
Exiv2ImageLoader loader;
if (loader.load(mData)) {
mExiv2Image = loader.popImage();
}
if (mFormat == "jpeg" && mExiv2Image.get()) {
mJpegContent.reset(new JpegContent());
}
if (mJpegContent.get()) {
if (!mJpegContent->loadFromData(mData, mExiv2Image.get()) &&
!mJpegContent->loadFromData(mData)) {
qWarning() << "Unable to use preview of " << q->document()->url().fileName();
return false;
}
// Use the size from JpegContent, as its correctly transposed if the
// image has been rotated
mImageSize = mJpegContent->size();
mCmsProfile = Cms::Profile::loadFromExiv2Image(mExiv2Image.get());
}
LOG("mImageSize" << mImageSize);
if (!mCmsProfile) {
mCmsProfile = Cms::Profile::loadFromImageData(mData, mFormat);
}
return true;
}
void loadImageData()
{
QBuffer buffer;
buffer.setBuffer(&mData);
buffer.open(QIODevice::ReadOnly);
QImageReader reader(&buffer, mFormat);
LOG("mImageDataInvertedZoom=" << mImageDataInvertedZoom);
if (mImageSize.isValid()
&& mImageDataInvertedZoom != 1
&& reader.supportsOption(QImageIOHandler::ScaledSize)
) {
// Do not use mImageSize here: QImageReader needs a non-transposed
// image size
QSize size = reader.size() / mImageDataInvertedZoom;
if (!size.isEmpty()) {
LOG("Setting scaled size to" << size);
reader.setScaledSize(size);
} else {
LOG("Not setting scaled size as it is empty" << size);
}
}
bool ok = reader.read(&mImage);
if (!ok) {
LOG("QImageReader::read() failed");
return;
}
if (mJpegContent.get() && GwenviewConfig::applyExifOrientation()) {
Gwenview::Orientation orientation = mJpegContent->orientation();
QMatrix matrix = ImageUtils::transformMatrix(orientation);
mImage = mImage.transformed(matrix);
}
if (reader.supportsAnimation()
&& reader.nextImageDelay() > 0 // Assume delay == 0 <=> only one frame
) {
/*
* QImageReader is not really helpful to detect animated gif:
* - QImageReader::imageCount() returns 0
* - QImageReader::nextImageDelay() may return something > 0 if the
* image consists of only one frame but includes a "Graphic
* Control Extension" (usually only present if we have an
* animation) (Bug #185523)
*
* Decoding the next frame is the only reliable way I found to
* detect an animated gif
*/
LOG("May be an animated image. delay:" << reader.nextImageDelay());
QImage nextImage;
if (reader.read(&nextImage)) {
LOG("Really an animated image (more than one frame)");
mAnimated = true;
} else {
qWarning() << q->document()->url() << "is not really an animated image (only one frame)";
}
}
}