Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
utils/media-ctl/libv4l2subdev.c | 62 +++++++++++++++++++++++++++++++++++++++++
utils/media-ctl/media-ctl.c | 3 ++
utils/media-ctl/v4l2subdev.h | 25 ++++++++++++++++-
3 files changed, 89 insertions(+), 1 deletion(-)
Old patch that was dying of boredom alone in my tree. As Sakari needs this
features it seems to be a good time to remove the dust and submit it.
diff --git a/utils/media-ctl/libv4l2subdev.c b/utils/media-ctl/libv4l2subdev.c
index 8015330ddb3c..ad3bb727aa07 100644
--- a/utils/media-ctl/libv4l2subdev.c
+++ b/utils/media-ctl/libv4l2subdev.c
@@ -473,6 +473,24 @@ static struct media_pad *v4l2_subdev_parse_pad_format(
continue;
}
+ if (strhazit("field:", &p)) {
+ enum v4l2_field field;
+
+ for (end = (char *)p; isalpha(*end) || *end == '-'; ++end);
+
+ field = v4l2_subdev_string_to_field(p, end - p);
+ if (field == (enum v4l2_field)-1) {
+ media_dbg(media, "Invalid field value '%*s'\n", end - p, p);
+ *endp = (char *)p;
+ return NULL;
+ }
+
+ format->field = field;
+
+ p = end;
+ continue;
+ }
+
/*
* Backward compatibility: crop rectangles can be specified
* implicitly without the 'crop:' property name.
@@ -755,3 +773,47 @@ enum v4l2_mbus_pixelcode v4l2_subdev_string_to_pixelcode(const char *string,
return mbus_formats[i].code;
}
+
+static struct {
+ const char *name;
+ enum v4l2_field field;
+} fields[] = {
+ { "any", V4L2_FIELD_ANY },
+ { "none", V4L2_FIELD_NONE },
+ { "top", V4L2_FIELD_TOP },
+ { "bottom", V4L2_FIELD_BOTTOM },
+ { "interlaced", V4L2_FIELD_INTERLACED },
+ { "seq-tb", V4L2_FIELD_SEQ_TB },
+ { "seq-bt", V4L2_FIELD_SEQ_BT },
+ { "alternate", V4L2_FIELD_ALTERNATE },
+ { "interlaced-tb", V4L2_FIELD_INTERLACED_TB },
+ { "interlaced-bt", V4L2_FIELD_INTERLACED_BT },
+};
+
+const char *v4l2_subdev_field_to_string(enum v4l2_field field)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(fields); ++i) {
+ if (fields[i].field == field)
+ return fields[i].name;
+ }
+
+ return "unknown";
+}
+
+enum v4l2_field v4l2_subdev_string_to_field(const char *string,
+ unsigned int length)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(fields); ++i) {
+ if (strncmp(fields[i].name, string, length) == 0)
+ break;
+ }
+
+ if (i == ARRAY_SIZE(fields))
+ return (enum v4l2_field)-1;
+
+ return fields[i].field;
+}
diff --git a/utils/media-ctl/media-ctl.c b/utils/media-ctl/media-ctl.c
index d3f6e041db7b..3002fb7e4e12 100644
--- a/utils/media-ctl/media-ctl.c
+++ b/utils/media-ctl/media-ctl.c
@@ -90,6 +90,9 @@ static void v4l2_subdev_print_format(struct media_entity *entity,
v4l2_subdev_pixelcode_to_string(format.code),
format.width, format.height);
+ if (format.field)
+ printf(" field:%s", v4l2_subdev_field_to_string(format.field));
+
ret = v4l2_subdev_get_selection(entity, &rect, pad,
V4L2_SEL_TGT_CROP_BOUNDS,
which);
diff --git a/utils/media-ctl/v4l2subdev.h b/utils/media-ctl/v4l2subdev.h
index 1cb53ffbcfab..9138b87e0976 100644
--- a/utils/media-ctl/v4l2subdev.h
+++ b/utils/media-ctl/v4l2subdev.h
@@ -247,7 +247,7 @@ const char *v4l2_subdev_pixelcode_to_string(enum v4l2_mbus_pixelcode code);
/**
* @brief Parse string to media bus pixel code.
* @param string - input string
- * @param lenght - length of the string
+ * @param length - length of the string
*
* Parse human readable string @a string to an media bus pixel code.
*
@@ -255,4 +255,27 @@ const char *v4l2_subdev_pixelcode_to_string(enum v4l2_mbus_pixelcode code);
*/
enum v4l2_mbus_pixelcode v4l2_subdev_string_to_pixelcode(const char *string,
unsigned int length);
+
+/**
+ * @brief Convert a field order to string.
+ * @param field - field order
+ *
+ * Convert field order @a field to a human-readable string.
+ *
+ * @return A pointer to a string on success, NULL on failure.
+ */
+const char *v4l2_subdev_field_to_string(enum v4l2_field field);
+
+/**
+ * @brief Parse string to field order.
+ * @param string - input string
+ * @param length - length of the string
+ *
+ * Parse human readable string @a string to field order.
+ *
+ * @return field order on success, -1 on failure.
+ */
+enum v4l2_field v4l2_subdev_string_to_field(const char *string,
+ unsigned int length);
+
#endif
--
Regards,
Laurent Pinchart
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