PNG_CSTRING_FROM_CHUNK  744 3rdparty/libpng/png.c    PNG_CSTRING_FROM_CHUNK(chunk_string, chunk_name);
PNG_CSTRING_FROM_CHUNK 1119 3rdparty/libpng/pngget.c    PNG_CSTRING_FROM_CHUNK(png_ptr->io_chunk_string, png_ptr->chunk_name);
PNG_CSTRING_FROM_CHUNK 2688 3rdparty/libpng/pngrutil.c       PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name);
PNG_CSTRING_FROM_CHUNK   96 3rdparty/libpng/pngwutil.c    PNG_CSTRING_FROM_CHUNK(buf, chunk_name);