[PATCH] libcamera: formats: Add 16-bit mono format

[Kieran Bingham]

From: Naushir Patuck <naush at raspberrypi.com>

Add the relevant definitions for a 16-bit mono pixel and media-bus
format.

Signed-off-by: Naushir Patuck <naush at raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
---

Patch cherry-picked from
https://github.com/raspberrypi/libcamera/commit/d8c775077c33f7475c5d4828ce3e374d5769b59c
and rebased on top of the recent df770d4b0a6d ("include: linux: Update
kernel headers to version v6.7".


 src/libcamera/bayer_format.cpp     |  3 +++
 src/libcamera/formats.cpp          | 10 ++++++++++
 src/libcamera/formats.yaml         |  2 ++
 src/libcamera/v4l2_pixelformat.cpp |  2 ++
 src/libcamera/v4l2_subdevice.cpp   |  1 +
 5 files changed, 18 insertions(+)

diff --git a/src/libcamera/bayer_format.cpp b/src/libcamera/bayer_format.cpp
index 3bf15fb48f36..2f55d33a915d 100644
--- a/src/libcamera/bayer_format.cpp
+++ b/src/libcamera/bayer_format.cpp
@@ -168,8 +168,11 @@ const std::map<BayerFormat, Formats, BayerFormatComparator> bayerToFormat{
 		{ formats::R8, V4L2PixelFormat(V4L2_PIX_FMT_GREY) } },
 	{ { BayerFormat::MONO, 10, BayerFormat::Packing::None },
 		{ formats::R10, V4L2PixelFormat(V4L2_PIX_FMT_Y10) } },
+	{ { BayerFormat::MONO, 16, BayerFormat::Packing::None },
+		{ formats::R16, V4L2PixelFormat(V4L2_PIX_FMT_Y16) } },
 	{ { BayerFormat::MONO, 10, BayerFormat::Packing::CSI2 },
 		{ formats::R10_CSI2P, V4L2PixelFormat(V4L2_PIX_FMT_Y10P) } },
+
 };
 
 const std::unordered_map<unsigned int, BayerFormat> mbusCodeToBayer{
diff --git a/src/libcamera/formats.cpp b/src/libcamera/formats.cpp
index 447e623803c7..46ccd43ba63a 100644
--- a/src/libcamera/formats.cpp
+++ b/src/libcamera/formats.cpp
@@ -507,6 +507,16 @@ const std::map<PixelFormat, PixelFormatInfo> pixelFormatInfo{
 		.pixelsPerGroup = 1,
 		.planes = {{ { 2, 1 }, { 0, 0 }, { 0, 0 } }},
 	} },
+	{ formats::R16, {
+		.name = "R16",
+		.format = formats::R16,
+		.v4l2Formats = { V4L2PixelFormat(V4L2_PIX_FMT_Y16), },
+		.bitsPerPixel = 16,
+		.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
+		.packed = false,
+		.pixelsPerGroup = 1,
+		.planes = {{ { 2, 1 }, { 0, 0 }, { 0, 0 } }},
+	} },
 	{ formats::R10_CSI2P, {
 		.name = "R10_CSI2P",
 		.format = formats::R10_CSI2P,
diff --git a/src/libcamera/formats.yaml b/src/libcamera/formats.yaml
index 539ac0b33084..d8a379923b56 100644
--- a/src/libcamera/formats.yaml
+++ b/src/libcamera/formats.yaml
@@ -11,6 +11,8 @@ formats:
       fourcc: DRM_FORMAT_R10
   - R12:
       fourcc: DRM_FORMAT_R12
+  - R16:
+      fourcc: DRM_FORMAT_R16
 
   - RGB565:
       fourcc: DRM_FORMAT_RGB565
diff --git a/src/libcamera/v4l2_pixelformat.cpp b/src/libcamera/v4l2_pixelformat.cpp
index 5551c62eb39b..731dc10f1d73 100644
--- a/src/libcamera/v4l2_pixelformat.cpp
+++ b/src/libcamera/v4l2_pixelformat.cpp
@@ -135,6 +135,8 @@ const std::map<V4L2PixelFormat, V4L2PixelFormat::Info> vpf2pf{
 		{ formats::R10_CSI2P, "10-bit Greyscale Packed" } },
 	{ V4L2PixelFormat(V4L2_PIX_FMT_Y12),
 		{ formats::R12, "12-bit Greyscale" } },
+	{ V4L2PixelFormat(V4L2_PIX_FMT_Y16),
+		{ formats::R16, "16-bit Greyscale" } },
 
 	/* Bayer formats. */
 	{ V4L2PixelFormat(V4L2_PIX_FMT_SBGGR8),
diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp
index 75ad11e55272..265240dbd405 100644
--- a/src/libcamera/v4l2_subdevice.cpp
+++ b/src/libcamera/v4l2_subdevice.cpp
@@ -88,6 +88,7 @@ const std::map<uint32_t, V4L2SubdeviceFormatInfo> formatInfoMap = {
 	{ MEDIA_BUS_FMT_YUYV10_2X10, { 20, "YUYV10_2X10", PixelFormatInfo::ColourEncodingYUV } },
 	{ MEDIA_BUS_FMT_YVYU10_2X10, { 20, "YVYU10_2X10", PixelFormatInfo::ColourEncodingYUV } },
 	{ MEDIA_BUS_FMT_Y12_1X12, { 12, "Y12_1X12", PixelFormatInfo::ColourEncodingYUV } },
+	{ MEDIA_BUS_FMT_Y16_1X16, { 16, "Y16_1X16", PixelFormatInfo::ColourEncodingYUV } },
 	{ MEDIA_BUS_FMT_UYVY8_1X16, { 16, "UYVY8_1X16", PixelFormatInfo::ColourEncodingYUV } },
 	{ MEDIA_BUS_FMT_VYUY8_1X16, { 16, "VYUY8_1X16", PixelFormatInfo::ColourEncodingYUV } },
 	{ MEDIA_BUS_FMT_YUYV8_1X16, { 16, "YUYV8_1X16", PixelFormatInfo::ColourEncodingYUV } },
-- 
2.34.1