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Fixed wrong plugin options behaviour

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While working on MR !230 I noticed that the options read I entered into several plugins could not be read after reading the image.

**The patch fixes problems reading options in plugins and adds option checking in the readtest.cpp.**

In particular, the reading test does the following additional actions:
- reads options before reading the image;
- compare the options read with the options returned by the reader after reading the image;
- compares the format and size of the returned image with the format and size returned by the reader.
This commit is contained in:
Mirco Miranda
2024-06-19 22:18:45 +00:00
committed by Albert Astals Cid
parent 81b7263d73
commit b849e48ef4
18 changed files with 368 additions and 87 deletions
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12
src/imageformats/exr.cpp
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@ -734,10 +734,12 @@ void EXRHandler::setOption(ImageOption option, const QVariant &value)
bool EXRHandler::supportsOption(ImageOption option) const
{
if (option == QImageIOHandler::Size) {
return true;
if (auto d = device())
return !d->isSequential();
}
if (option == QImageIOHandler::ImageFormat) {
return true;
if (auto d = device())
return !d->isSequential();
}
if (option == QImageIOHandler::CompressionRatio) {
return true;
@ -756,6 +758,9 @@ QVariant EXRHandler::option(ImageOption option) const
if (auto d = device()) {
// transactions works on both random and sequential devices
d->startTransaction();
if (m_startPos > -1) {
d->seek(m_startPos);
}
try {
K_IStream istr(d, QByteArray());
Imf::RgbaInputFile file(istr);
@ -778,6 +783,9 @@ QVariant EXRHandler::option(ImageOption option) const
if (auto d = device()) {
// transactions works on both random and sequential devices
d->startTransaction();
if (m_startPos > -1) {
d->seek(m_startPos);
}
try {
K_IStream istr(d, QByteArray());
Imf::RgbaInputFile file(istr);