png_write_sBIT 3260 third_party/libpng/png.h PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit, png_write_sBIT 83 third_party/libpng/pngwrite.c png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type);