png_flush        3224 third_party/libpng/png.h PNG_EXTERN void png_flush PNGARG((png_structp png_ptr)) PNG_PRIVATE;
png_flush         424 third_party/libpng/pngwrite.c    png_flush(png_ptr);
png_flush        1034 third_party/libpng/pngwrite.c    png_flush(png_ptr);