[PATCH 09/15] mediactl: libv4l2subdev: Add colorspace logging

[Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>]

Add a function for obtaining colorspace name by id.

Signed-off-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
 utils/media-ctl/libv4l2subdev.c |   32 ++++++++++++++++++++++++++++++++
 utils/media-ctl/v4l2subdev.h    |   10 ++++++++++
 2 files changed, 42 insertions(+)

diff --git a/utils/media-ctl/libv4l2subdev.c b/utils/media-ctl/libv4l2subdev.c
index 5175188..b3d11ef 100644
--- a/utils/media-ctl/libv4l2subdev.c
+++ b/utils/media-ctl/libv4l2subdev.c
@@ -32,6 +32,7 @@
 #include <unistd.h>
 
 #include <linux/v4l2-subdev.h>
+#include <linux/videodev2.h>
 
 #include "mediactl.h"
 #include "mediactl-priv.h"
@@ -819,6 +820,37 @@ const char *v4l2_subdev_pixelcode_to_string(enum v4l2_mbus_pixelcode code)
 	return "unknown";
 }
 
+static struct {
+	const char *name;
+	enum v4l2_colorspace cs;
+} colorspaces[] = {
+        { "DEFAULT", V4L2_COLORSPACE_DEFAULT },
+        { "SMPTE170M", V4L2_COLORSPACE_SMPTE170M },
+        { "SMPTE240M", V4L2_COLORSPACE_SMPTE240M },
+        { "REC709", V4L2_COLORSPACE_REC709 },
+        { "BT878", V4L2_COLORSPACE_BT878 },
+        { "470_SYSTEM_M", V4L2_COLORSPACE_470_SYSTEM_M },
+        { "470_SYSTEM_BG", V4L2_COLORSPACE_470_SYSTEM_BG },
+        { "JPEG", V4L2_COLORSPACE_JPEG },
+        { "SRGB", V4L2_COLORSPACE_SRGB },
+        { "ADOBERGB", V4L2_COLORSPACE_ADOBERGB },
+        { "BT2020", V4L2_COLORSPACE_BT2020 },
+        { "RAW", V4L2_COLORSPACE_RAW },
+        { "DCI_P3", V4L2_COLORSPACE_DCI_P3 },
+};
+
+const char *v4l2_subdev_colorspace_to_string(enum v4l2_colorspace cs)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(colorspaces); ++i) {
+		if (colorspaces[i].cs == cs)
+			return colorspaces[i].name;
+	}
+
+	return "unknown";
+}
+
 enum v4l2_mbus_pixelcode v4l2_subdev_string_to_pixelcode(const char *string,
 							 unsigned int length)
 {
diff --git a/utils/media-ctl/v4l2subdev.h b/utils/media-ctl/v4l2subdev.h
index f395065..7d9e53a 100644
--- a/utils/media-ctl/v4l2subdev.h
+++ b/utils/media-ctl/v4l2subdev.h
@@ -289,6 +289,16 @@ int v4l2_subdev_parse_setup_formats(struct media_device *media, const char *p);
 const char *v4l2_subdev_pixelcode_to_string(enum v4l2_mbus_pixelcode code);
 
 /**
+ * @brief Convert colorspace to string.
+ * @param code - input string
+ *
+ * Convert colorspace @a to a human-readable string.
+ *
+ * @return A pointer to a string on success, NULL on failure.
+ */
+const char *v4l2_subdev_colorspace_to_string(enum v4l2_colorspace cs);
+
+/**
  * @brief Parse string to media bus pixel code.
  * @param string - input string
  * @param length - length of the string
-- 
1.7.9.5

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