81 static void readDataFromStream(png_structp readPtr, png_bytep data, png_size_t length) {  in readDataFromStream()  argument
82     std::istream* input = reinterpret_cast<std::istream*>(png_get_io_ptr(readPtr));  in readDataFromStream()
84         png_error(readPtr, strerror(errno));  in readDataFromStream()
97 static void logWarning(png_structp readPtr, png_const_charp warningMessage) {  in logWarning()  argument
98     SourceLogger* logger = reinterpret_cast<SourceLogger*>(png_get_error_ptr(readPtr));  in logWarning()
103 static bool readPng(png_structp readPtr, png_infop infoPtr, PngInfo* outInfo,  in readPng()  argument
105     if (setjmp(png_jmpbuf(readPtr))) {  in readPng()
110     png_set_sig_bytes(readPtr, kPngSignatureSize);  in readPng()
111     png_read_info(readPtr, infoPtr);  in readPng()
114     png_get_IHDR(readPtr, infoPtr, &outInfo->width, &outInfo->height, &bitDepth, &colorType,  in readPng()
118         png_set_palette_to_rgb(readPtr);  in readPng()
122         png_set_expand_gray_1_2_4_to_8(readPtr);  in readPng()
125     if (png_get_valid(readPtr, infoPtr, PNG_INFO_tRNS)) {  in readPng()
126         png_set_tRNS_to_alpha(readPtr);  in readPng()
130         png_set_strip_16(readPtr);  in readPng()
134         png_set_add_alpha(readPtr, 0xFF, PNG_FILLER_AFTER);  in readPng()
138         png_set_gray_to_rgb(readPtr);  in readPng()
141     png_set_interlace_handling(readPtr);  in readPng()
142     png_read_update_info(readPtr, infoPtr);  in readPng()
144     const uint32_t rowBytes = png_get_rowbytes(readPtr, infoPtr);  in readPng()
150     png_read_image(readPtr, outInfo->rows.data());  in readPng()
151     png_read_end(readPtr, infoPtr);  in readPng()
1213     png_structp readPtr = nullptr;  in process()  local
1219     readPtr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, nullptr, nullptr);  in process()
1220     if (!readPtr) {  in process()
1225     infoPtr = png_create_info_struct(readPtr);  in process()
1231     png_set_error_fn(readPtr, reinterpret_cast<png_voidp>(&logger), nullptr, logWarning);  in process()
1234     png_set_read_fn(readPtr, (png_voidp)&input, readDataFromStream);  in process()
1236     if (!readPng(readPtr, infoPtr, &pngInfo, outError)) {  in process()
1270     if (readPtr) {  in process()
1271         png_destroy_read_struct(&readPtr, &infoPtr, nullptr);  in process()