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Message-ID: <20241124125515.3340625-1-sashal@kernel.org>
Date: Sun, 24 Nov 2024 07:54:15 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Dmitry Perchanov <dmitry.perchanov@...el.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Sasha Levin <sashal@...nel.org>,
mchehab@...nel.org,
hverkuil@...all.nl,
sakari.ailus@...ux.intel.com,
jacopo.mondi@...asonboard.com,
naush@...pberrypi.com,
jeanmichel.hautbois@...asonboard.com,
benjamin.gaignard@...labora.com,
linux-media@...r.kernel.org
Subject: [PATCH AUTOSEL 6.1 1/9] media: v4l: Add luma 16-bit interlaced pixel format
From: Dmitry Perchanov <dmitry.perchanov@...el.com>
[ Upstream commit a8f2cdd27d114ed6c3354a0e39502e6d56215804 ]
The formats added by this patch are:
V4L2_PIX_FMT_Y16I
Interlaced lumina format primary use in RealSense Depth cameras with
stereo stream for left and right image sensors.
Signed-off-by: Dmitry Perchanov <dmitry.perchanov@...el.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Link: https://lore.kernel.org/r/568efbd75290e286b8ad9e7347b5f43745121020.camel@intel.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
.../userspace-api/media/v4l/pixfmt-y16i.rst | 73 +++++++++++++++++++
.../userspace-api/media/v4l/yuv-formats.rst | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
include/uapi/linux/videodev2.h | 1 +
4 files changed, 76 insertions(+)
create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y16i.rst
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y16i.rst b/Documentation/userspace-api/media/v4l/pixfmt-y16i.rst
new file mode 100644
index 0000000000000..74ba9e910a38f
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/pixfmt-y16i.rst
@@ -0,0 +1,73 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _V4L2-PIX-FMT-Y16I:
+
+**************************
+V4L2_PIX_FMT_Y16I ('Y16I')
+**************************
+
+Interleaved grey-scale image, e.g. from a stereo-pair
+
+
+Description
+===========
+
+This is a grey-scale image with a depth of 16 bits per pixel, but with pixels
+from 2 sources interleaved and unpacked. Each pixel is stored in a 16-bit word
+in the little-endian order. The first pixel is from the left source.
+
+**Pixel unpacked representation.**
+Left/Right pixels 16-bit unpacked - 16-bit for each interleaved pixel.
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ * - Y'\ :sub:`0L[7:0]`
+ - Y'\ :sub:`0L[15:8]`
+ - Y'\ :sub:`0R[7:0]`
+ - Y'\ :sub:`0R[15:8]`
+
+**Byte Order.**
+Each cell is one byte.
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ * - start + 0:
+ - Y'\ :sub:`00Llow`
+ - Y'\ :sub:`00Lhigh`
+ - Y'\ :sub:`00Rlow`
+ - Y'\ :sub:`00Rhigh`
+ - Y'\ :sub:`01Llow`
+ - Y'\ :sub:`01Lhigh`
+ - Y'\ :sub:`01Rlow`
+ - Y'\ :sub:`01Rhigh`
+ * - start + 8:
+ - Y'\ :sub:`10Llow`
+ - Y'\ :sub:`10Lhigh`
+ - Y'\ :sub:`10Rlow`
+ - Y'\ :sub:`10Rhigh`
+ - Y'\ :sub:`11Llow`
+ - Y'\ :sub:`11Lhigh`
+ - Y'\ :sub:`11Rlow`
+ - Y'\ :sub:`11Rhigh`
+ * - start + 16:
+ - Y'\ :sub:`20Llow`
+ - Y'\ :sub:`20Lhigh`
+ - Y'\ :sub:`20Rlow`
+ - Y'\ :sub:`20Rhigh`
+ - Y'\ :sub:`21Llow`
+ - Y'\ :sub:`21Lhigh`
+ - Y'\ :sub:`21Rlow`
+ - Y'\ :sub:`21Rhigh`
+ * - start + 24:
+ - Y'\ :sub:`30Llow`
+ - Y'\ :sub:`30Lhigh`
+ - Y'\ :sub:`30Rlow`
+ - Y'\ :sub:`30Rhigh`
+ - Y'\ :sub:`31Llow`
+ - Y'\ :sub:`31Lhigh`
+ - Y'\ :sub:`31Rlow`
+ - Y'\ :sub:`31Rhigh`
diff --git a/Documentation/userspace-api/media/v4l/yuv-formats.rst b/Documentation/userspace-api/media/v4l/yuv-formats.rst
index 24b34cdfa6fea..78ee406d76479 100644
--- a/Documentation/userspace-api/media/v4l/yuv-formats.rst
+++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst
@@ -269,5 +269,6 @@ image.
pixfmt-yuv-luma
pixfmt-y8i
pixfmt-y12i
+ pixfmt-y16i
pixfmt-uv8
pixfmt-m420
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 6876ec25bc512..05c9820598478 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1317,6 +1317,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;
case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
+ case V4L2_PIX_FMT_Y16I: descr = "Interleaved 16-bit Greyscale"; break;
case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 45fa03882ef18..08046beeeb049 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -767,6 +767,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_S5C_UYVY_JPG v4l2_fourcc('S', '5', 'C', 'I') /* S5C73M3 interleaved UYVY/JPEG */
#define V4L2_PIX_FMT_Y8I v4l2_fourcc('Y', '8', 'I', ' ') /* Greyscale 8-bit L/R interleaved */
#define V4L2_PIX_FMT_Y12I v4l2_fourcc('Y', '1', '2', 'I') /* Greyscale 12-bit L/R interleaved */
+#define V4L2_PIX_FMT_Y16I v4l2_fourcc('Y', '1', '6', 'I') /* Greyscale 16-bit L/R interleaved */
#define V4L2_PIX_FMT_Z16 v4l2_fourcc('Z', '1', '6', ' ') /* Depth data 16-bit */
#define V4L2_PIX_FMT_MT21C v4l2_fourcc('M', 'T', '2', '1') /* Mediatek compressed block mode */
#define V4L2_PIX_FMT_MM21 v4l2_fourcc('M', 'M', '2', '1') /* Mediatek 8-bit block mode, two non-contiguous planes */
--
2.43.0
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