opencv/modules/imgcodecs/src/grfmt_webp.hpp
Alexander Alekhin 0515f930e8 imgcodecs(webp): multiple fixes
- don't reallocate passed 'img' (test fixed - must use IMREAD_UNCHANGED / IMREAD_ANYCOLOR)
- avoid memory DDOS
- avoid reading of whole file during header processing
- avoid data access after allocated buffer during header processing (missing checks)
- use WebPFree() to free allocated buffers (libwebp >= 0.5.0)
- drop unused & undefined `.close()` method
- added checks for channels >= 5 in encoder
2018-08-30 20:42:33 +00:00

93 lines
3.0 KiB
C++

/*M///////////////////////////////////////////////////////////////////////////////////////
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#ifndef _GRFMT_WEBP_H_
#define _GRFMT_WEBP_H_
#include "grfmt_base.hpp"
#ifdef HAVE_WEBP
#include <fstream>
namespace cv
{
class WebPDecoder CV_FINAL : public BaseImageDecoder
{
public:
WebPDecoder();
~WebPDecoder() CV_OVERRIDE;
bool readData( Mat& img ) CV_OVERRIDE;
bool readHeader() CV_OVERRIDE;
size_t signatureLength() const CV_OVERRIDE;
bool checkSignature( const String& signature) const CV_OVERRIDE;
ImageDecoder newDecoder() const CV_OVERRIDE;
protected:
std::ifstream fs;
size_t fs_size;
Mat data;
int channels;
};
class WebPEncoder CV_FINAL : public BaseImageEncoder
{
public:
WebPEncoder();
~WebPEncoder() CV_OVERRIDE;
bool write(const Mat& img, const std::vector<int>& params) CV_OVERRIDE;
ImageEncoder newEncoder() const CV_OVERRIDE;
};
}
#endif
#endif /* _GRFMT_WEBP_H_ */