ic
/
magnum
mirror of https://github.com/mosra/magnum.git
6
0
Fork 0
Code Issues Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
7052 Commits
21 Branches
19 Tags
70 MiB
 
 
 
 
 
Tree: f4fd8a0648
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'f4fd8a0648'
${ noResults }
magnum/src/Magnum/DebugTools/CompareImage.cpp

635 lines
29 KiB
Raw Blame History

/*
This file is part of Magnum.
Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Vladimír Vondruš <mosra@centrum.cz>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include "CompareImage.h"
#include <map>
#include <sstream>
#include <Corrade/Containers/StridedArrayView.h>
#include <Corrade/Containers/Optional.h>
#include <Corrade/PluginManager/Manager.h>
#include <Corrade/Utility/DebugStl.h>
#include <Corrade/Utility/Directory.h>
#include "Magnum/ImageView.h"
#include "Magnum/PixelFormat.h"
#include "Magnum/Math/Functions.h"
#include "Magnum/Math/Color.h"
#include "Magnum/Math/Algorithms/KahanSum.h"
#include "Magnum/Trade/AbstractImageConverter.h"
#include "Magnum/Trade/AbstractImporter.h"
#include "Magnum/Trade/ImageData.h"
namespace Magnum { namespace DebugTools { namespace Implementation {
namespace {
template<std::size_t size, class T> Float calculateImageDelta(const Containers::StridedArrayView2D<const Math::Vector<size, T>>& actual, const Containers::StridedArrayView2D<const Math::Vector<size, T>>& expected, const Containers::StridedArrayView2D<Float>& output) {
CORRADE_INTERNAL_ASSERT(actual.size() == output.size());
CORRADE_INTERNAL_ASSERT(output.size() == expected.size());
/* Calculate deltas and maximal value of them */
Float max{};
for(std::size_t i = 0, iMax = expected.size()[0]; i != iMax; ++i) {
Containers::StridedArrayView1D<const Math::Vector<size, T>> actualRow = actual[i];
Containers::StridedArrayView1D<const Math::Vector<size, T>> expectedRow = expected[i];
Containers::StridedArrayView1D<Float> outputRow = output[i];
for(std::size_t j = 0, jMax = expectedRow.size(); j != jMax; ++j) {
/* Explicitly convert from T to Float */
auto actualPixel = Math::Vector<size, Float>(actualRow[j]);
auto expectedPixel = Math::Vector<size, Float>(expectedRow[j]);
/* First calculate a classic difference */
Math::Vector<size, Float> diff = Math::abs(actualPixel - expectedPixel);
/* Mark pixels that are NaN in both actual and expected pixels as
having no difference */
diff = Math::lerp(diff, {}, Math::isNan(actualPixel) & Math::isNan(expectedPixel));
/* Then also mark pixels that are the same sign of infnity in both
actual and expected pixel as having no difference */
diff = Math::lerp(diff, {}, Math::isInf(actualPixel) & Math::isInf(expectedPixel) & Math::equal(actualPixel, expectedPixel));
/* Calculate the difference and save it to the output image even
with NaN and ±Inf (as the user should know) */
outputRow[j] = diff.sum()/size;
/* On the other hand, infs and NaNs should not contribute to the
max delta -- because all other differences would be zero
compared to them */
max = Math::max(max, Math::lerp(diff, {}, Math::isNan(diff)|Math::isInf(diff)).sum()/size);
}
}
return max;
}
}
std::tuple<Containers::Array<Float>, Float, Float> calculateImageDelta(const ImageView2D& actual, const ImageView2D& expected) {
/* Calculate a delta image */
Containers::Array<Float> deltaData{Containers::NoInit,
std::size_t(expected.size().product())};
Containers::StridedArrayView2D<Float> delta{deltaData,
{std::size_t(expected.size().y()), std::size_t(expected.size().x())}};
CORRADE_ASSERT(!isPixelFormatImplementationSpecific(expected.format()),
"DebugTools::CompareImage: can't compare implementation-specific pixel formats", {});
Float max{Constants::nan()};
switch(expected.format()) {
#define _c(format, size, T) \
case PixelFormat::format: \
max = calculateImageDelta<size, T>( \
actual.pixels<Math::Vector<size, T>>(), \
expected.pixels<Math::Vector<size, T>>(), delta); \
break;
#define _d(first, second, size, T) \
case PixelFormat::first: \
case PixelFormat::second: \
max = calculateImageDelta<size, T>( \
actual.pixels<Math::Vector<size, T>>(), \
expected.pixels<Math::Vector<size, T>>(), delta); \
break;
/* LCOV_EXCL_START */
_d(R8Unorm, R8UI, 1, UnsignedByte)
_d(RG8Unorm, RG8UI, 2, UnsignedByte)
_d(RGB8Unorm, RGB8UI, 3, UnsignedByte)
_d(RGBA8Unorm, RGBA8UI, 4, UnsignedByte)
_d(R8Snorm, R8I, 1, Byte)
_d(RG8Snorm, RG8I, 2, Byte)
_d(RGB8Snorm, RGB8I, 3, Byte)
_d(RGBA8Snorm, RGBA8I, 4, Byte)
_d(R16Unorm, R16UI, 1, UnsignedShort)
_d(RG16Unorm, RG16UI, 2, UnsignedShort)
_d(RGB16Unorm, RGB16UI, 3, UnsignedShort)
_d(RGBA16Unorm, RGBA16UI, 4, UnsignedShort)
_d(R16Snorm, R16I, 1, Short)
_d(RG16Snorm, RG16I, 2, Short)
_d(RGB16Snorm, RGB16I, 3, Short)
_d(RGBA16Snorm, RGBA16I, 4, Short)
_c(R32UI, 1, UnsignedInt)
_c(RG32UI, 2, UnsignedInt)
_c(RGB32UI, 3, UnsignedInt)
_c(RGBA32UI, 4, UnsignedInt)
_c(R32I, 1, Int)
_c(RG32I, 2, Int)
_c(RGB32I, 3, Int)
_c(RGBA32I, 4, Int)
_c(R32F, 1, Float)
_c(RG32F, 2, Float)
_c(RGB32F, 3, Float)
_c(RGBA32F, 4, Float)
/* LCOV_EXCL_STOP */
#undef _d
#undef _c
case PixelFormat::R16F:
case PixelFormat::RG16F:
case PixelFormat::RGB16F:
case PixelFormat::RGBA16F:
CORRADE_ASSERT(false,
"DebugTools::CompareImage: half-float formats are not supported yet", {});
}
CORRADE_ASSERT(max == max,
"DebugTools::CompareImage: unknown format" << expected.format(), {});
/* Calculate mean delta. Do it the special way so we don't lose
precision -- that would result in having false negatives! This
*deliberately* leaves specials in. The `max` has them already filtered
out so if this would filter them out as well, there would be nothing
left that could cause the comparison to fail. */
const Float mean = Math::Algorithms::kahanSum(deltaData.begin(), deltaData.end())/deltaData.size();
return std::make_tuple(std::move(deltaData), max, mean);
}
namespace {
/* Done by printing an white to black gradient using one of the online
ASCII converters. Yes, I'm lazy. Another one could be " .,:;ox%#@". */
constexpr char CharacterData[] = " .,:~=+?7IZ$08DNM";
constexpr Containers::ArrayView<const char> Characters{CharacterData, sizeof(CharacterData) - 1};
}
void printDeltaImage(Debug& out, Containers::ArrayView<const Float> deltas, const Vector2i& size, const Float max, const Float maxThreshold, const Float meanThreshold) {
CORRADE_INTERNAL_ASSERT(meanThreshold <= maxThreshold);
/* At most 64 characters per line. The console fonts height is usually 2x
the width, so there is twice the pixels per block */
const Vector2i pixelsPerBlock{(size.x() + 63)/64, 2*((size.x() + 63)/64)};
const Vector2i blockCount = (size + pixelsPerBlock - Vector2i{1})/pixelsPerBlock;
for(std::int_fast32_t y = 0; y != blockCount.y(); ++y) {
out << " |";
for(std::int_fast32_t x = 0; x != blockCount.x(); ++x) {
/* Going bottom-up so we don't flip the image upside down when
printing */
const Vector2i offset = Vector2i{Int(x), blockCount.y() - Int(y) - 1}*pixelsPerBlock;
const Vector2i blockSize = Math::min(size - offset, Vector2i{pixelsPerBlock});
Float blockMax{};
for(std::int_fast32_t yb = 0; yb != blockSize.y(); ++yb) {
for(std::int_fast32_t xb = 0; xb != blockSize.x(); ++xb) {
/* Propagating NaNs. The delta should never be negative --
but we need to test inversely in order to work correctly
for NaNs. */
const Float delta = deltas[(offset.y() + yb)*size.x() + offset.x() + xb];
CORRADE_INTERNAL_ASSERT(!(delta < 0.0f));
blockMax = Math::max(delta, blockMax);
}
}
const char c = Math::isNan(blockMax) ? Characters.back() : Characters[Int(Math::round(Math::min(1.0f, blockMax/max)*(Characters.size() - 1)))];
if(blockMax > maxThreshold)
out << Debug::boldColor(Debug::Color::Red) << Debug::nospace << std::string{c} << Debug::resetColor;
else if(blockMax > meanThreshold)
out << Debug::boldColor(Debug::Color::Yellow) << Debug::nospace << std::string{c} << Debug::resetColor;
else out << Debug::nospace << std::string{c};
}
out << Debug::nospace << "|" << Debug::newline;
}
}
namespace {
void printPixelAt(Debug& out, const Containers::StridedArrayView3D<const char>& pixels, const Vector2i& pos, const PixelFormat format) {
const char* const pixel = &pixels[pos.y()][pos.x()][0];
switch(format) {
#define _c(format, size, T) \
case PixelFormat::format: \
out << *reinterpret_cast<const Math::Vector<size, T>*>(pixel); \
break;
#define _d(first, second, size, T) \
case PixelFormat::first: \
case PixelFormat::second: \
out << *reinterpret_cast<const Math::Vector<size, T>*>(pixel); \
break;
/* LCOV_EXCL_START */
_d(R8Unorm, R8UI, 1, UnsignedByte)
_d(RG8Unorm, RG8UI, 2, UnsignedByte)
_c(RGB8UI, 3, UnsignedByte)
_c(RGBA8UI, 4, UnsignedByte)
/* RGB8Unorm, RGBA8Unorm handled below */
_d(R8Snorm, R8I, 1, Byte)
_d(RG8Snorm, RG8I, 2, Byte)
_d(RGB8Snorm, RGB8I, 3, Byte)
_d(RGBA8Snorm, RGBA8I, 4, Byte)
_d(R16Unorm, R16UI, 1, UnsignedShort)
_d(RG16Unorm, RG16UI, 2, UnsignedShort)
_d(RGB16Unorm, RGB16UI, 3, UnsignedShort)
_d(RGBA16Unorm, RGBA16UI, 4, UnsignedShort)
_d(R16Snorm, R16I, 1, Short)
_d(RG16Snorm, RG16I, 2, Short)
_d(RGB16Snorm, RGB16I, 3, Short)
_d(RGBA16Snorm, RGBA16I, 4, Short)
_c(R32UI, 1, UnsignedInt)
_c(RG32UI, 2, UnsignedInt)
_c(RGB32UI, 3, UnsignedInt)
_c(RGBA32UI, 4, UnsignedInt)
_c(R32I, 1, Int)
_c(RG32I, 2, Int)
_c(RGB32I, 3, Int)
_c(RGBA32I, 4, Int)
_c(R32F, 1, Float)
_c(RG32F, 2, Float)
_c(RGB32F, 3, Float)
_c(RGBA32F, 4, Float)
/* LCOV_EXCL_STOP */
#undef _d
#undef _c
/* Take the opportunity and print 8-bit colors in hex */
case PixelFormat::RGB8Unorm:
out << *reinterpret_cast<const Color3ub*>(pixel);
break;
case PixelFormat::RGBA8Unorm:
out << *reinterpret_cast<const Color4ub*>(pixel);
break;
case PixelFormat::R16F:
case PixelFormat::RG16F:
case PixelFormat::RGB16F:
case PixelFormat::RGBA16F:
/* Already handled by a printing assert before */
CORRADE_ASSERT_UNREACHABLE(); /* LCOV_EXCL_LINE */
}
}
}
void printPixelDeltas(Debug& out, Containers::ArrayView<const Float> delta, const ImageView2D& actual, const ImageView2D& expected, const Float maxThreshold, const Float meanThreshold, std::size_t maxCount) {
/* Find first maxCount values above mean threshold and put them into a
sorted map. Need to reverse the condition in order to catch NaNs. */
std::multimap<Float, std::size_t> large;
for(std::size_t i = 0; i != delta.size(); ++i)
if(!(delta[i] <= meanThreshold)) large.emplace(delta[i], i);
CORRADE_INTERNAL_ASSERT(!large.empty());
if(large.size() > maxCount)
out << " Top" << maxCount << "out of" << large.size() << "pixels above max/mean threshold:";
else
out << " Pixels above max/mean threshold:";
/* Print the values from largest to smallest. Branching on the done in the
inner loop but that doesn't matter as we always print just ~10 values. */
std::size_t count = 0;
for(auto it = large.crbegin(); it != large.crend(); ++it) {
if(++count > maxCount) break;
Vector2i pos;
std::tie(pos.y(), pos.x()) = Math::div(Int(it->second), expected.size().x());
out << Debug::newline << " [" << Debug::nospace << pos.x()
<< Debug::nospace << "," << Debug::nospace << pos.y()
<< Debug::nospace << "]";
printPixelAt(out, actual.pixels(), pos, expected.format());
out << Debug::nospace << ", expected";
printPixelAt(out, expected.pixels(), pos, expected.format());
out << "(Δ =" << Debug::boldColor(delta[it->second] > maxThreshold ?
Debug::Color::Red : Debug::Color::Yellow) << delta[it->second]
<< Debug::nospace << Debug::resetColor << ")";
}
}
enum class ImageComparatorBase::State: UnsignedByte {
PluginLoadFailed = 1,
ActualImageLoadFailed,
ExpectedImageLoadFailed,
ActualImageIsCompressed,
ExpectedImageIsCompressed,
DifferentSize,
DifferentFormat,
AboveThresholds,
AboveMeanThreshold,
AboveMaxThreshold
};
class ImageComparatorBase::FileState {
public:
explicit FileState(PluginManager::Manager<Trade::AbstractImporter>* importerManager, PluginManager::Manager<Trade::AbstractImageConverter>* converterManager): _importerManager{importerManager}, _converterManager{converterManager} {}
explicit FileState() {}
/* Lazy-create the importer / converter if those weren't passed from
the outside. The importer might not be used at all if we are
comparing two image data (but in that case the FileState won't be
created at all); the converter will get used only very rarely for
the --save-failed option. Treat both the same lazy way to keep the
code straightforward. */
PluginManager::Manager<Trade::AbstractImporter>& importerManager() {
if(!_importerManager) _importerManager = &_privateImporterManager.emplace();
return *_importerManager;
}
PluginManager::Manager<Trade::AbstractImageConverter>& converterManager() {
if(!_converterManager) _converterManager = &_privateConverterManager.emplace();
return *_converterManager;
}
private:
Containers::Optional<PluginManager::Manager<Trade::AbstractImporter>> _privateImporterManager;
Containers::Optional<PluginManager::Manager<Trade::AbstractImageConverter>> _privateConverterManager;
PluginManager::Manager<Trade::AbstractImporter>* _importerManager{};
PluginManager::Manager<Trade::AbstractImageConverter>* _converterManager{};
public:
std::string actualFilename, expectedFilename;
Containers::Optional<Trade::ImageData2D> actualImageData, expectedImageData;
/** @todo could at least the views have a NoCreate constructor? */
Containers::Optional<ImageView2D> actualImage, expectedImage;
};
ImageComparatorBase::ImageComparatorBase(PluginManager::Manager<Trade::AbstractImporter>* importerManager, PluginManager::Manager<Trade::AbstractImageConverter>* converterManager, Float maxThreshold, Float meanThreshold): _maxThreshold{maxThreshold}, _meanThreshold{meanThreshold}, _max{}, _mean{} {
/* Only instantiate the file state if there's something to save -- if we
are comparing two image data, it won't be used at all */
if(importerManager || converterManager)
_fileState.reset(new FileState{importerManager, converterManager});
CORRADE_ASSERT(!Math::isNan(maxThreshold) && !Math::isInf(maxThreshold) &&
!Math::isNan(meanThreshold) && !Math::isInf(meanThreshold),
"DebugTools::CompareImage: thresholds can't be NaN or infinity", );
CORRADE_ASSERT(meanThreshold <= maxThreshold,
"DebugTools::CompareImage: maxThreshold can't be smaller than meanThreshold", );
}
ImageComparatorBase::~ImageComparatorBase() = default;
TestSuite::ComparisonStatusFlags ImageComparatorBase::operator()(const ImageView2D& actual, const ImageView2D& expected) {
/* Taking just references is okay because in case of files those are
references to actual views stored inside FileState; and in case of
data, the actual/expected params passed here stay in scope for the whole
time where operator(), printMessage() & saveDiagnostic() gets called */
_actualImage = &actual;
_expectedImage = &expected;
/* Verify that the images are the same */
if(actual.size() != expected.size()) {
_state = State::DifferentSize;
return TestSuite::ComparisonStatusFlag::Failed;
}
if(actual.format() != expected.format()) {
_state = State::DifferentFormat;
return TestSuite::ComparisonStatusFlag::Failed;
}
Containers::Array<Float> delta;
std::tie(delta, _max, _mean) = DebugTools::Implementation::calculateImageDelta(actual, expected);
/* Verify the max/mean is never below zero so we didn't mess up when
calculating specials. Note the inverted condition to catch NaNs in
_mean. The max should OTOH be never special as it would make all other
deltas become zero in comparison. */
CORRADE_INTERNAL_ASSERT(!(_mean < 0.0f));
CORRADE_INTERNAL_ASSERT(_max >= 0.0f && !Math::isInf(_max) && !Math::isNan(_max));
/* If both values are not above threshold, success. Comparing this way in
order to properly catch NaNs in mean values. */
if(_max > _maxThreshold && !(_mean <= _meanThreshold))
_state = State::AboveThresholds;
else if(_max > _maxThreshold)
_state = State::AboveMaxThreshold;
else if(!(_mean <= _meanThreshold))
_state = State::AboveMeanThreshold;
else return TestSuite::ComparisonStatusFlags{};
/* Otherwise save the deltas and fail */
_delta = std::move(delta);
return TestSuite::ComparisonStatusFlag::Failed;
}
TestSuite::ComparisonStatusFlags ImageComparatorBase::operator()(const std::string& actual, const std::string& expected) {
if(!_fileState) _fileState.reset(new FileState);
_fileState->actualFilename = actual;
_fileState->expectedFilename = expected;
Containers::Pointer<Trade::AbstractImporter> importer;
/* Can't load importer plugin. While we *could* save diagnostic in this
case too, it would make no sense as it's a Schrödinger image at this
point -- we have no idea if it's the same or not until we open it. */
if(!(importer = _fileState->importerManager().loadAndInstantiate("AnyImageImporter"))) {
_state = State::PluginLoadFailed;
return TestSuite::ComparisonStatusFlag::Failed;
}
/* Same here. We can't open the image for some reason (file missing? broken
plugin?), so can't know if it's the same or not. */
if(!importer->openFile(actual) || !(_fileState->actualImageData = importer->image2D(0))) {
_state = State::ActualImageLoadFailed;
return TestSuite::ComparisonStatusFlag::Failed;
}
/* If the actual data are compressed, we won't be able to compare them
(and probably neither save them back due to format mismatches). Don't
provide diagnostic in that case. */
if(_fileState->actualImageData->isCompressed()) {
_state = State::ActualImageIsCompressed;
return TestSuite::ComparisonStatusFlag::Failed;
}
/* At this point we already know we successfully opened the actual file,
so save also the view on its parsed contents to avoid it going out of
scope. We're saving through an image converter, not the original file,
see saveDiagnostic() for reasons why. */
_fileState->actualImage.emplace(*_fileState->actualImageData);
/* Save a reference to the actual image so saveDiagnostic() can reach the
data even if we fail before the final data comparison (which does this
as well) */
_actualImage = &*_fileState->actualImage;
/* If the expected file can't be opened, we should still be able to save
the actual as a diagnostic. This could get also used to generate ground
truth data on the first-ever test run. */
if(!importer->openFile(expected) || !(_fileState->expectedImageData = importer->image2D(0))) {
_state = State::ExpectedImageLoadFailed;
return TestSuite::ComparisonStatusFlag::Failed|TestSuite::ComparisonStatusFlag::Diagnostic;
}
/* If the expected file is compressed, it's bad, but it doesn't mean we
couldn't save the actual file either */
if(_fileState->expectedImageData->isCompressed()) {
_state = State::ExpectedImageIsCompressed;
return TestSuite::ComparisonStatusFlag::Failed|TestSuite::ComparisonStatusFlag::Diagnostic;
}
/* Save also a view on the expected image data and proxy to the actual data
comparison. If comparison failed, offer to save a diagnostic. */
_fileState->expectedImage.emplace(*_fileState->expectedImageData);
TestSuite::ComparisonStatusFlags flags = operator()(*_fileState->actualImage, *_fileState->expectedImage);
if(flags & TestSuite::ComparisonStatusFlag::Failed)
flags |= TestSuite::ComparisonStatusFlag::Diagnostic;
return flags;
}
TestSuite::ComparisonStatusFlags ImageComparatorBase::operator()(const ImageView2D& actual, const std::string& expected) {
if(!_fileState) _fileState.reset(new FileState);
_fileState->expectedFilename = expected;
Containers::Pointer<Trade::AbstractImporter> importer;
/* Can't load importer plugin. While we *could* save diagnostic in this
case too, it would make no sense as it's a Schrödinger image at this
point -- we have no idea if it's the same or not until we open it. */
if(!(importer = _fileState->importerManager().loadAndInstantiate("AnyImageImporter"))) {
_state = State::PluginLoadFailed;
return TestSuite::ComparisonStatusFlag::Failed;
}
/* Save a reference to the actual image so saveDiagnostic() can reach the
data even if we fail before the final data comparison (which does this
as well) */
_actualImage = &actual;
/* If the expected file can't be opened, we should still be able to save
the actual as a diagnostic. This could get also used to generate ground
truth data on the first-ever test run. */
if(!importer->openFile(expected) || !(_fileState->expectedImageData = importer->image2D(0))) {
_state = State::ExpectedImageLoadFailed;
return TestSuite::ComparisonStatusFlag::Failed|TestSuite::ComparisonStatusFlag::Diagnostic;
}
/* If the expected file is compressed, it's bad, but it doesn't mean we
couldn't save the actual file either */
if(_fileState->expectedImageData->isCompressed()) {
_state = State::ExpectedImageIsCompressed;
return TestSuite::ComparisonStatusFlag::Failed|TestSuite::ComparisonStatusFlag::Diagnostic;
}
/* Save a view on the expected image data and proxy to the actual data
comparison. If comparison failed, offer to save a diagnostic. */
_fileState->expectedImage.emplace(*_fileState->expectedImageData);
TestSuite::ComparisonStatusFlags flags = operator()(actual, *_fileState->expectedImage);
if(flags & TestSuite::ComparisonStatusFlag::Failed)
flags |= TestSuite::ComparisonStatusFlag::Diagnostic;
return flags;
}
TestSuite::ComparisonStatusFlags ImageComparatorBase::operator()(const std::string& actual, const ImageView2D& expected) {
if(!_fileState) _fileState.reset(new FileState);
_fileState->actualFilename = actual;
/* Here we are comparing against a view, not a file, so we cannot save
diagnostic in any case as we don't have the expected filename. This
behavior is consistent with TestSuite::Compare::FileToString. */
Containers::Pointer<Trade::AbstractImporter> importer;
if(!(importer = _fileState->importerManager().loadAndInstantiate("AnyImageImporter"))) {
_state = State::PluginLoadFailed;
return TestSuite::ComparisonStatusFlag::Failed;
}
if(!importer->openFile(actual) || !(_fileState->actualImageData = importer->image2D(0))) {
_state = State::ActualImageLoadFailed;
return TestSuite::ComparisonStatusFlag::Failed;
}
if(_fileState->actualImageData->isCompressed()) {
_state = State::ActualImageIsCompressed;
return TestSuite::ComparisonStatusFlag::Failed;
}
_fileState->actualImage.emplace(*_fileState->actualImageData);
return operator()(*_fileState->actualImage, expected);
}
void ImageComparatorBase::printMessage(TestSuite::ComparisonStatusFlags, Debug& out, const std::string& actual, const std::string& expected) const {
if(_state == State::PluginLoadFailed) {
out << "AnyImageImporter plugin could not be loaded.";
return;
}
if(_state == State::ActualImageLoadFailed) {
out << "Actual image" << actual << "(" << Debug::nospace << _fileState->actualFilename << Debug::nospace << ")" << "could not be loaded.";
return;
}
if(_state == State::ExpectedImageLoadFailed) {
out << "Expected image" << expected << "(" << Debug::nospace << _fileState->expectedFilename << Debug::nospace << ")" << "could not be loaded.";
return;
}
if(_state == State::ActualImageIsCompressed) {
out << "Actual image" << actual << "(" << Debug::nospace << _fileState->actualFilename << Debug::nospace << ")" << "is compressed, comparison not possible.";
return;
}
if(_state == State::ExpectedImageIsCompressed) {
out << "Expected image" << expected << "(" << Debug::nospace << _fileState->expectedFilename << Debug::nospace << ")" << "is compressed, comparison not possible.";
return;
}
out << "Images" << actual << "and" << expected << "have";
if(_state == State::DifferentSize)
out << "different size, actual" << _actualImage->size() << "but"
<< _expectedImage->size() << "expected.";
else if(_state == State::DifferentFormat)
out << "different format, actual" << _actualImage->format() << "but"
<< _expectedImage->format() << "expected.";
else {
if(_state == State::AboveThresholds)
out << "both max and mean delta above threshold, actual"
<< _max << Debug::nospace << "/" << Debug::nospace << _mean
<< "but at most" << _maxThreshold << Debug::nospace << "/"
<< Debug::nospace << _meanThreshold << "expected.";
else if(_state == State::AboveMaxThreshold)
out << "max delta above threshold, actual" << _max
<< "but at most" << _maxThreshold
<< "expected. Mean delta" << _mean << "is below threshold"
<< _meanThreshold << Debug::nospace << ".";
else if(_state == State::AboveMeanThreshold)
out << "mean delta above threshold, actual" << _mean
<< "but at most" << _meanThreshold
<< "expected. Max delta" << _max << "is below threshold"
<< _maxThreshold << Debug::nospace << ".";
else CORRADE_ASSERT_UNREACHABLE(); /* LCOV_EXCL_LINE */
out << "Delta image:" << Debug::newline;
DebugTools::Implementation::printDeltaImage(out, _delta, _expectedImage->size(), _max, _maxThreshold, _meanThreshold);
DebugTools::Implementation::printPixelDeltas(out, _delta, *_actualImage, *_expectedImage, _maxThreshold, _meanThreshold, 10);
}
}
void ImageComparatorBase::saveDiagnostic(TestSuite::ComparisonStatusFlags, Utility::Debug& out, const std::string& path) {
CORRADE_INTERNAL_ASSERT(_fileState);
CORRADE_INTERNAL_ASSERT(_actualImage);
const std::string filename = Utility::Directory::join(path, Utility::Directory::filename(_fileState->expectedFilename));
/* Export the data the base view/view comparator saved. Ignore failures,
we're in the middle of a fail anyway (and everything will print messages
to the output nevertheless). */
Containers::Pointer<Trade::AbstractImageConverter> converter = _fileState->converterManager().loadAndInstantiate("AnyImageConverter");
if(converter && converter->exportToFile(*_actualImage, filename))
out << "->" << filename;
}
}}}