libcamera: formats: Add R10 and R12 formats

These new formats corresponds to the V4L2 V4L2_PIX_FMT_Y10 and
V4L2_PIX_FMT_Y12 formats, and are the little-endian version of the
DRM_FORMAT_R10 and DRM_FORMAT_R12 formats.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/formats.cpp

@@ -484,6 +484,32 @@ const std::map<PixelFormat, PixelFormatInfo> pixelFormatInfo{
 		.pixelsPerGroup = 1,
 		.planes = {{ { 1, 1 }, { 0, 0 }, { 0, 0 } }},
 	} },
+	{ formats::R10, {
+		.name = "R10",
+		.format = formats::R10,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_Y10),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 10,
+		.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
+		.packed = false,
+		.pixelsPerGroup = 1,
+		.planes = {{ { 2, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
+	{ formats::R12, {
+		.name = "R12",
+		.format = formats::R12,
+		.v4l2Formats = {
+			.single = V4L2PixelFormat(V4L2_PIX_FMT_Y12),
+			.multi = V4L2PixelFormat(),
+		},
+		.bitsPerPixel = 12,
+		.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
+		.packed = false,
+		.pixelsPerGroup = 1,
+		.planes = {{ { 2, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
 
 	/* Bayer formats. */
 	{ formats::SBGGR8, {

src/libcamera/formats.yaml

@@ -7,6 +7,10 @@
 formats:
   - R8:
       fourcc: DRM_FORMAT_R8
+  - R10:
+      fourcc: DRM_FORMAT_R10
+  - R12:
+      fourcc: DRM_FORMAT_R12
 
   - RGB565:
       fourcc: DRM_FORMAT_RGB565

src/libcamera/v4l2_pixelformat.cpp

@@ -117,6 +117,10 @@ const std::map<V4L2PixelFormat, V4L2PixelFormat::Info> vpf2pf{
 	/* Greyscale formats. */
 	{ V4L2PixelFormat(V4L2_PIX_FMT_GREY),
 		{ formats::R8, "8-bit Greyscale" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_Y10),
+		{ formats::R10, "10-bit Greyscale" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_Y12),
+		{ formats::R12, "12-bit Greyscale" } },
 
 	/* Bayer formats. */
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SBGGR8),