vignetting correction process. If unknown, leave it at the default value (which
is 1000).
+@item scale
+The scale factor which is applied after transformation. After correction the
+video is no longer necessarily rectangular. This parameter controls how much of
+the resulting image is visible. The value 0 means that a value will be chosen
+automatically such that there is little or no unmapped area in the output
+image. 1.0 means that no additional scaling is done. Lower values may result
+in more of the corrected image being visible, while higher values may avoid
+unmapped areas in the output.
+
@item target_geometry
The target geometry of the output image/video. The following values are valid
options:
float focal_length;
float aperture;
float focus_distance;
+ float scale;
int target_geometry;
int reverse;
int interpolation_type;
{ "focal_length", "focal length of video (zoom; constant for the duration of the use of this filter)", OFFSET(focal_length), AV_OPT_TYPE_FLOAT, {.dbl=18}, 0.0, DBL_MAX, FLAGS },
{ "aperture", "aperture (constant for the duration of the use of this filter)", OFFSET(aperture), AV_OPT_TYPE_FLOAT, {.dbl=3.5}, 0.0, DBL_MAX, FLAGS },
{ "focus_distance", "focus distance (constant for the duration of the use of this filter)", OFFSET(focus_distance), AV_OPT_TYPE_FLOAT, {.dbl=1000.0f}, 0.0, DBL_MAX, FLAGS },
+ { "scale", "scale factor applied after corrections (0.0 means automatic scaling)", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, DBL_MAX, FLAGS },
{ "target_geometry", "target geometry of the lens correction (only when geometry correction is enabled)", OFFSET(target_geometry), AV_OPT_TYPE_INT, {.i64=LF_RECTILINEAR}, 0, INT_MAX, FLAGS, "lens_geometry" },
{ "rectilinear", "rectilinear lens (default)", 0, AV_OPT_TYPE_CONST, {.i64=LF_RECTILINEAR}, 0, 0, FLAGS, "lens_geometry" },
{ "fisheye", "fisheye lens", 0, AV_OPT_TYPE_CONST, {.i64=LF_FISHEYE}, 0, 0, FLAGS, "lens_geometry" },
lensfun->focal_length,
lensfun->aperture,
lensfun->focus_distance,
- 0.0,
+ lensfun->scale,
lensfun->target_geometry,
lensfun_mode,
lensfun->reverse);