to do: write pixel data in YCBCR subsampled format

ImageMagick · Sep 15, 2024 · cccfebb · cccfebb
1 parent bf69fec
commit cccfebb
Showing 1 changed file with 9 additions and 3 deletions.
diff --git a/coders/tiff.c b/coders/tiff.c
@@ -3602,7 +3602,9 @@ static MagickBooleanType WriteTIFFImage(const ImageInfo *image_info,
               flags;
 
             sampling_factor=(const char *) NULL;
-            value=GetImageProperty(image,"jpeg:sampling-factor");
+            value=GetImageOption(image_info,"jpeg:sampling-factor");
+            if (value == (char *) NULL)
+              value=GetImageProperty(image,"jpeg:sampling-factor");
             if (value != (char *) NULL)
               {
                 sampling_factor=value;
@@ -3617,8 +3619,12 @@ static MagickBooleanType WriteTIFFImage(const ImageInfo *image_info,
                 flags=ParseGeometry(sampling_factor,&geometry_info);
                 if ((flags & SigmaValue) == 0)
                   geometry_info.sigma=geometry_info.rho;
-                (void) TIFFSetField(tiff,TIFFTAG_YCBCRSUBSAMPLING,(uint16)
-                  geometry_info.rho,(uint16) geometry_info.sigma);
+                /*
+                  To do: write pixel data in YCBCR subsampled format.
+
+                  (void) TIFFSetField(tiff,TIFFTAG_YCBCRSUBSAMPLING,(uint16)
+                    geometry_info.rho,(uint16) geometry_info.sigma);
+                */
               }
           }
         (void) TIFFGetFieldDefaulted(tiff,TIFFTAG_BITSPERSAMPLE,