use fastest zlib compression settings to reduce serial overhead when writing PNG images

2023-08-17 22:44:41 -04:00
parent 8a5fd08fa1
commit 84168fc84d
1 changed files with 1 additions and 1 deletions
--- a/src/image.cpp
+++ b/src/image.cpp
@ -1090,7 +1090,7 @@ void Image::write_PNG(FILE *fp)
  }

  png_init_io(png_ptr, fp);
-  png_set_compression_level(png_ptr,Z_BEST_COMPRESSION);
+  png_set_compression_level(png_ptr,Z_BEST_SPEED);
  png_set_IHDR(png_ptr,info_ptr,width,height,8,PNG_COLOR_TYPE_RGB,
    PNG_INTERLACE_NONE,PNG_COMPRESSION_TYPE_DEFAULT,PNG_FILTER_TYPE_DEFAULT);