PNG_INFO_PLTE     502 3rdparty/libpng/png.c       info_ptr->valid &= ~PNG_INFO_PLTE;
PNG_INFO_PLTE     917 3rdparty/libpng/pngget.c    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
PNG_INFO_PLTE     923 3rdparty/libpng/pngget.c       return (PNG_INFO_PLTE);
PNG_INFO_PLTE     556 3rdparty/libpng/pngset.c    info_ptr->valid |= PNG_INFO_PLTE;
PNG_INFO_PLTE     135 3rdparty/libpng/pngwrite.c    if (info_ptr->valid & PNG_INFO_PLTE)