From: Neil Armstrong <narmstrong@baylibre.com>
To: hverkuil-cisco@xs4all.nl
Cc: Maxime Jourdan <mjourdan@baylibre.com>,
Neil Armstrong <narmstrong@baylibre.com>,
linux-kernel@vger.kernel.org, linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: [PATCH 1/5] media: videodev2: add Compressed Framebuffer pixel formats
Date: Thu, 4 Jun 2020 15:53:13 +0200 [thread overview]
Message-ID: <20200604135317.9235-2-narmstrong@baylibre.com> (raw)
In-Reply-To: <20200604135317.9235-1-narmstrong@baylibre.com>
From: Maxime Jourdan <mjourdan@baylibre.com>
Add two generic Compressed Framebuffer pixel formats to be used
with a modifier when imported back in another subsystem like DRM/KMS.
These pixel formats represents generic 8bits and 10bits compressed buffers
with a vendor specific layout.
These are aligned with the DRM_FORMAT_YUV420_8BIT and DRM_FORMAT_YUV420_10BIT
used to describe the underlying compressed buffers used for ARM Framebuffer
Compression. In the Amlogic case, the compression is different but the
underlying buffer components is the same.
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/media/v4l2-core/v4l2-ioctl.c | 2 ++
include/uapi/linux/videodev2.h | 9 +++++++++
2 files changed, 11 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 2322f08a98be..8f14adfd5bc5 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1447,6 +1447,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
+ case V4L2_PIX_FMT_YUV420_8BIT: descr = "Compressed YUV 4:2:0 8-bit Format"; break;
+ case V4L2_PIX_FMT_YUV420_10BIT: descr = "Compressed YUV 4:2:0 10-bit Format"; break;
default:
if (fmt->description[0])
return;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index c3a1cf1c507f..90b9949acb8a 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -705,6 +705,15 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_FWHT v4l2_fourcc('F', 'W', 'H', 'T') /* Fast Walsh Hadamard Transform (vicodec) */
#define V4L2_PIX_FMT_FWHT_STATELESS v4l2_fourcc('S', 'F', 'W', 'H') /* Stateless FWHT (vicodec) */
+/*
+ * Compressed Luminance+Chrominance meta-formats
+ * In these formats, the component ordering is specified (Y, followed by U
+ * then V), but the exact Linear layout is undefined.
+ * These formats can only be used with a non-Linear modifier.
+ */
+#define V4L2_PIX_FMT_YUV420_8BIT v4l2_fourcc('Y', 'U', '0', '8') /* 1-plane YUV 4:2:0 8-bit */
+#define V4L2_PIX_FMT_YUV420_10BIT v4l2_fourcc('Y', 'U', '1', '0') /* 1-plane YUV 4:2:0 10-bit */
+
/* Vendor-specific formats */
#define V4L2_PIX_FMT_CPIA1 v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */
#define V4L2_PIX_FMT_WNVA v4l2_fourcc('W', 'N', 'V', 'A') /* Winnov hw compress */
--
2.22.0
_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic
next prev parent reply other threads:[~2020-06-04 13:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-04 13:53 [PATCH 0/5] media: meson: vdec: Add support for compressed framebuffer Neil Armstrong
2020-06-04 13:53 ` Neil Armstrong [this message]
2020-06-05 15:35 ` [PATCH 1/5] media: videodev2: add Compressed Framebuffer pixel formats Nicolas Dufresne
2020-06-05 15:37 ` Nicolas Dufresne
2020-06-08 8:16 ` Neil Armstrong
2020-06-08 9:26 ` Hans Verkuil
2020-06-08 14:14 ` Neil Armstrong
2020-06-08 14:43 ` Hans Verkuil
2020-06-08 18:59 ` Nicolas Dufresne
2020-06-09 7:43 ` Neil Armstrong
2020-06-09 10:28 ` Ezequiel Garcia
2020-06-09 15:44 ` Nicolas Dufresne
2020-06-11 12:26 ` Helen Koike
2020-06-04 13:53 ` [PATCH 2/5] media: meson: vdec: handle bitdepth on source change Neil Armstrong
2020-06-04 13:53 ` [PATCH 3/5] media: meson: vdec: update compressed buffer helpers Neil Armstrong
2020-06-04 13:53 ` [PATCH 4/5] media: meson: vdec: add support for compressed output for VP9 decoder Neil Armstrong
2020-06-04 13:53 ` [PATCH 5/5] media: meson: vdec: handle compressed output pixel format negociation with consumer Neil Armstrong
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200604135317.9235-2-narmstrong@baylibre.com \
--to=narmstrong@baylibre.com \
--cc=hverkuil-cisco@xs4all.nl \
--cc=linux-amlogic@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=mjourdan@baylibre.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).