[libcamera-devel] [PATCH v2 2/4] gstreamer: Update the obtained colorimetry in caps.

[Rishikesh Donadkar]

If the colorspace is set in the StreamConfiguration, get the colorimetry as
a result of conversion from the previous patch and update it into the caps.

If the colorimetry corresponding to the colorspace set in the
StreamConfiguration is not available in GStreamer set the colorimetry
field to nullptr in the caps (this will fail the negotiation).

Signed-off-by: Rishikesh Donadkar <rishikeshdonadkar at gmail.com>
---
 src/gstreamer/gstlibcamera-utils.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/gstreamer/gstlibcamera-utils.cpp b/src/gstreamer/gstlibcamera-utils.cpp
index 60ac8c8e..eb9c49da 100644
--- a/src/gstreamer/gstlibcamera-utils.cpp
+++ b/src/gstreamer/gstlibcamera-utils.cpp
@@ -166,11 +166,26 @@ gst_libcamera_stream_configuration_to_caps(const StreamConfiguration &stream_cfg
 {
 	GstCaps *caps = gst_caps_new_empty();
 	GstStructure *s = bare_structure_from_format(stream_cfg.pixelFormat);
+	gchar *colorimetry = nullptr;
+	std::optional<ColorSpace> colorspace = stream_cfg.colorSpace;
 
 	gst_structure_set(s,
 			  "width", G_TYPE_INT, stream_cfg.size.width,
 			  "height", G_TYPE_INT, stream_cfg.size.height,
 			  nullptr);
+
+	if (colorspace) {
+		colorimetry = colorimerty_from_colorspace(colorspace);
+		if (colorimetry) {
+			gst_structure_set(s, "colorimetry", G_TYPE_STRING, colorimetry, nullptr);
+		} else {
+			gst_structure_set(s, "colorimetry", G_TYPE_STRING, nullptr, nullptr);
+			g_free(colorimetry);
+		}
+	} else {
+		g_free(colorimetry);
+	}
+
 	gst_caps_append_structure(caps, s);
 
 	return caps;
-- 
2.25.1