signatureLength    80 modules/imgcodecs/src/grfmt_base.cpp     size_t len = signatureLength();
signatureLength    76 modules/imgcodecs/src/grfmt_base.hpp     virtual size_t signatureLength() const;
signatureLength    67 modules/imgcodecs/src/grfmt_hdr.hpp     size_t signatureLength() const;
signatureLength    63 modules/imgcodecs/src/grfmt_pxm.hpp     size_t signatureLength() const;
signatureLength   105 modules/imgcodecs/src/grfmt_tiff.hpp     size_t signatureLength() const;
signatureLength    66 modules/imgcodecs/src/grfmt_webp.hpp     size_t signatureLength() const;
signatureLength   131 modules/imgcodecs/src/loadsave.cpp         size_t len = codecs.decoders[i]->signatureLength();
signatureLength   168 modules/imgcodecs/src/loadsave.cpp         size_t len = codecs.decoders[i]->signatureLength();