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stb: exposed error messages

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This commit is contained in:
emeric
2024-01-06 21:09:20 +01:00
parent c016efa3bf
commit b80282a05a
2 changed files with 91 additions and 96 deletions
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src/libs/image/impl/stb/RawImage.cpp
+74 -79
View File
@@ -25,6 +25,8 @@
#define STBIR_DEFAULT_FILTER_DOWNSAMPLE STBIR_FILTER_MITCHELL
#define STBIR_DEFAULT_FILTER_UPSAMPLE STBIR_FILTER_CATMULLROM
#define STBI_FAILURE_USERMSG
#include <stb_image.h>
#include <stb_image_resize.h>
@@ -34,99 +36,92 @@
namespace Image
{
std::unique_ptr<IRawImage> decodeImage(const std::byte* encodedData, std::size_t encodedDataSize)
{
return std::make_unique<STB::RawImage>(encodedData, encodedDataSize);
}
std::unique_ptr<IRawImage> decodeImage(const std::byte* encodedData, std::size_t encodedDataSize)
{
return std::make_unique<STB::RawImage>(encodedData, encodedDataSize);
}
std::unique_ptr<IRawImage> decodeImage(const std::filesystem::path& path)
{
return std::make_unique<STB::RawImage>(path);
}
std::unique_ptr<IRawImage> decodeImage(const std::filesystem::path& path)
{
return std::make_unique<STB::RawImage>(path);
}
void
init(const std::filesystem::path&)
{
}
void init(const std::filesystem::path&)
{
}
}
namespace Image::STB
{
RawImage::RawImage(const std::byte* encodedData, std::size_t encodedDataSize)
{
int n;
_data = UniquePtrFree {stbi_load_from_memory(reinterpret_cast<const stbi_uc*>(encodedData), encodedDataSize, &_width, &_height, &n, 3), std::free};
if (!_data)
throw ImageException {"Cannot load image from memory"};
}
RawImage::RawImage(const std::byte* encodedData, std::size_t encodedDataSize)
{
int n;
_data = UniquePtrFree{ ::stbi_load_from_memory(reinterpret_cast<const stbi_uc*>(encodedData), encodedDataSize, &_width, &_height, &n, 3), std::free };
if (!_data)
throw ImageException{ "Cannot load image from memory: " + std::string{ ::stbi_failure_reason() } };
}
RawImage::RawImage(const std::filesystem::path& p)
{
int n;
_data = UniquePtrFree {stbi_load(p.string().c_str(), &_width, &_height, &n, 3), std::free};
if (!_data)
throw ImageException {"Cannot load image from memory"};
}
RawImage::RawImage(const std::filesystem::path& p)
{
int n;
_data = UniquePtrFree{ stbi_load(p.string().c_str(), &_width, &_height, &n, 3), std::free };
if (!_data)
throw ImageException{ "Cannot load image from file: " + std::string{ ::stbi_failure_reason() } };
}
void
RawImage::resize(ImageSize width)
{
size_t height;
if (_width == _height)
{
height = width;
}
else if (_width > _height)
{
height = (size_t)((float)width/_width*_height);
}
else
{
height = width;
width = (size_t)((float)height/_height*_width);
}
void RawImage::resize(ImageSize width)
{
size_t height;
if (_width == _height)
{
height = width;
}
else if (_width > _height)
{
height = (size_t)((float)width / _width * _height);
}
else
{
height = width;
width = (size_t)((float)height / _height * _width);
}
UniquePtrFree resizedData {reinterpret_cast<unsigned char*>(malloc(width*height*3)), std::free};
if (!resizedData)
throw ImageException {"Cannot allocate memory for resized image!"};
UniquePtrFree resizedData{ reinterpret_cast<unsigned char*>(malloc(width * height * 3)), std::free };
if (!resizedData)
throw ImageException{ "Cannot allocate memory for resized image!" };
if (stbir_resize_uint8_srgb(reinterpret_cast<const unsigned char*>(_data.get()), _width, _height, 0,
reinterpret_cast<unsigned char*>(resizedData.get()), width, height, 0,
3, STBIR_ALPHA_CHANNEL_NONE, 0) == 0)
{
throw ImageException {"Failed to resize image!"};
}
if (::stbir_resize_uint8_srgb(reinterpret_cast<const unsigned char*>(_data.get()), _width, _height, 0,
reinterpret_cast<unsigned char*>(resizedData.get()), width, height, 0,
3, STBIR_ALPHA_CHANNEL_NONE, 0) == 0)
{
throw ImageException{ "Failed to resize image:" + std::string{ ::stbi_failure_reason() } };
}
_data = std::move(resizedData);
_height = height;
_width = width;
}
_data = std::move(resizedData);
_height = height;
_width = width;
}
std::unique_ptr<IEncodedImage>
RawImage::encodeToJPEG(unsigned quality) const
{
return std::make_unique<JPEGImage>(*this, quality);
}
std::unique_ptr<IEncodedImage> RawImage::encodeToJPEG(unsigned quality) const
{
return std::make_unique<JPEGImage>(*this, quality);
}
ImageSize
RawImage::getWidth() const
{
return _width;
}
ImageSize RawImage::getWidth() const
{
return _width;
}
ImageSize
RawImage::getHeight() const
{
return _height;
}
ImageSize RawImage::getHeight() const
{
return _height;
}
const std::byte*
RawImage::getData() const
{
if (!_data)
return nullptr;
const std::byte* RawImage::getData() const
{
if (!_data)
return nullptr;
return reinterpret_cast<const std::byte*>(_data.get());
}
return reinterpret_cast<const std::byte*>(_data.get());
}
}
src/libs/image/impl/stb/RawImage.hpp
+16 -16
View File
@@ -31,24 +31,24 @@
namespace Image::STB
{
class RawImage : public IRawImage
{
public:
RawImage(const std::byte* encodedData, std::size_t encodedDataSize);
RawImage(const std::filesystem::path& path);
class RawImage : public IRawImage
{
public:
RawImage(const std::byte* encodedData, std::size_t encodedDataSize);
RawImage(const std::filesystem::path& path);
void resize(ImageSize width) override;
std::unique_ptr<IEncodedImage> encodeToJPEG(unsigned quality) const override;
void resize(ImageSize width) override;
std::unique_ptr<IEncodedImage> encodeToJPEG(unsigned quality) const override;
ImageSize getWidth() const;
ImageSize getHeight() const;
const std::byte* getData() const;
ImageSize getWidth() const;
ImageSize getHeight() const;
const std::byte* getData() const;
private:
int _width;
int _height;
using UniquePtrFree = std::unique_ptr<unsigned char, decltype(&std::free)>;
UniquePtrFree _data {nullptr, std::free};
};
private:
int _width;
int _height;
using UniquePtrFree = std::unique_ptr<unsigned char, decltype(&std::free)>;
UniquePtrFree _data{ nullptr, std::free };
};
}