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exr: Fix read/write with openexr 3.3

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It really wants to have a filename

Also it uses seek and tell a lot so sequential devices are for now not
supported

BUGS: 494571
This commit is contained in:
Albert Astals Cid 2024-10-12 01:42:26 +02:00
parent b5d5abe0ea
commit 7d696a81d2
1 changed files with 16 additions and 9 deletions
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25
src/imageformats/exr.cpp
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@ -86,8 +86,8 @@
class K_IStream : public Imf::IStream
{
public:
K_IStream(QIODevice *dev, const QByteArray &fileName)
: IStream(fileName.data())
K_IStream(QIODevice *dev)
: IStream("K_IStream")
, m_dev(dev)
{
}
@ -145,8 +145,8 @@ void K_IStream::clear()
class K_OStream : public Imf::OStream
{
public:
K_OStream(QIODevice *dev, const QByteArray &fileName)
: OStream(fileName.data())
K_OStream(QIODevice *dev)
: OStream("K_OStream")
, m_dev(dev)
{
}
@ -360,7 +360,7 @@ bool EXRHandler::read(QImage *outImage)
}
}
K_IStream istr(d, QByteArray());
K_IStream istr(d);
Imf::RgbaInputFile file(istr);
auto &&header = file.header();
@ -583,7 +583,7 @@ bool EXRHandler::write(const QImage &image)
setMetadata(image, header);
// write the EXR
K_OStream ostr(device(), QByteArray());
K_OStream ostr(device());
auto channelsType = image.hasAlphaChannel() ? Imf::RgbaChannels::WRITE_RGBA : Imf::RgbaChannels::WRITE_RGB;
if (image.format() == QImage::Format_Mono ||
image.format() == QImage::Format_MonoLSB ||
@ -673,7 +673,7 @@ QVariant EXRHandler::option(ImageOption option) const
d->seek(m_startPos);
}
try {
K_IStream istr(d, QByteArray());
K_IStream istr(d);
Imf::RgbaInputFile file(istr);
if (m_imageNumber > -1) { // set the image to read
auto views = viewList(file.header());
@ -698,7 +698,7 @@ QVariant EXRHandler::option(ImageOption option) const
d->seek(m_startPos);
}
try {
K_IStream istr(d, QByteArray());
K_IStream istr(d);
Imf::RgbaInputFile file(istr);
v = QVariant::fromValue(imageFormat(file));
} catch (const std::exception &) {
@ -747,7 +747,7 @@ int EXRHandler::imageCount() const
d->startTransaction();
try {
K_IStream istr(d, QByteArray());
K_IStream istr(d);
Imf::RgbaInputFile file(istr);
auto views = viewList(file.header());
if (!views.isEmpty()) {
@ -774,6 +774,13 @@ bool EXRHandler::canRead(QIODevice *device)
return false;
}
#if OPENEXR_VERSION_MAJOR == 3 && OPENEXR_VERSION_MINOR > 2
// openexpr >= 3.3 uses seek and tell extensively
if (device->isSequential()) {
return false;
}
#endif
const QByteArray head = device->peek(4);
return Imf::isImfMagic(head.data());