From: Stanimir Varbanov <stanimir.varbanov@linaro.org>
To: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-media@vger.kernel.org, devicetree@vger.kernel.org
Cc: Vikash Garodia <vgarodia@codeaurora.org>,
dikshita@codeaurora.org,
Stanimir Varbanov <stanimir.varbanov@linaro.org>
Subject: [PATCH v4 04/12] v4l: Add source event change for bit-depth
Date: Mon, 6 Jan 2020 17:49:21 +0200 [thread overview]
Message-ID: <20200106154929.4331-5-stanimir.varbanov@linaro.org> (raw)
In-Reply-To: <20200106154929.4331-1-stanimir.varbanov@linaro.org>
This event indicate that the source color bit-depth is changed
during run-time. The client must get the new format and re-allocate
buffers for it. This can usually happens with video decoder (encoders)
when the bit-stream color bit-depth is changed from 8 to 10bits
or vice versa.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
Documentation/media/uapi/v4l/vidioc-dqevent.rst | 8 +++++++-
Documentation/media/videodev2.h.rst.exceptions | 1 +
include/uapi/linux/videodev2.h | 1 +
3 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/Documentation/media/uapi/v4l/vidioc-dqevent.rst b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
index 42659a3d1705..fad853d440cf 100644
--- a/Documentation/media/uapi/v4l/vidioc-dqevent.rst
+++ b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
@@ -402,7 +402,13 @@ call.
that many Video Capture devices are not able to recover from a temporary
loss of signal and so restarting streaming I/O is required in order for
the hardware to synchronize to the video signal.
-
+ * - ``V4L2_EVENT_SRC_CH_COLOR_DEPTH``
+ - 0x0002
+ - This event gets triggered when color bit-depth change is detected
+ from a video decoder. Applications will have to query the new pixel
+ format and re-negotiate the queue. In most cases the streaming must be
+ stopped and restarted (:ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>`
+ followed by :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>`).
Return Value
============
diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions
index cb6ccf91776e..209709114378 100644
--- a/Documentation/media/videodev2.h.rst.exceptions
+++ b/Documentation/media/videodev2.h.rst.exceptions
@@ -490,6 +490,7 @@ replace define V4L2_EVENT_CTRL_CH_FLAGS ctrl-changes-flags
replace define V4L2_EVENT_CTRL_CH_RANGE ctrl-changes-flags
replace define V4L2_EVENT_SRC_CH_RESOLUTION src-changes-flags
+replace define V4L2_EVENT_SRC_CH_COLOR_DEPTH src-changes-flags
replace define V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ :c:type:`v4l2_event_motion_det`
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 5f9357dcb060..1d349c9d57a7 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -2332,6 +2332,7 @@ struct v4l2_event_frame_sync {
};
#define V4L2_EVENT_SRC_CH_RESOLUTION (1 << 0)
+#define V4L2_EVENT_SRC_CH_COLOR_DEPTH (1 << 1)
struct v4l2_event_src_change {
__u32 changes;
--
2.17.1
next prev parent reply other threads:[~2020-01-06 15:50 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-06 15:49 [PATCH v4 00/12] Venus new features Stanimir Varbanov
2020-01-06 15:49 ` [PATCH v4 01/12] venus: redesign clocks and pm domains control Stanimir Varbanov
2020-01-06 15:49 ` [PATCH v4 02/12] media: venus: introduce core selection Stanimir Varbanov
2020-01-06 15:49 ` [PATCH v4 03/12] venus: venc: blacklist two encoder properties Stanimir Varbanov
2020-01-06 15:49 ` Stanimir Varbanov [this message]
2020-01-08 16:09 ` [PATCH v4 04/12] v4l: Add source event change for bit-depth Hans Verkuil
2020-01-08 16:43 ` Stanimir Varbanov
2020-01-09 7:41 ` Stanimir Varbanov
2020-01-09 8:57 ` Hans Verkuil
2020-01-10 10:54 ` Stanimir Varbanov
2020-01-15 15:03 ` Hans Verkuil
2020-04-15 14:34 ` Stanimir Varbanov
2020-01-06 15:49 ` [PATCH v4 05/12] media: venus: vdec: handle 10bit bitstreams Stanimir Varbanov
2020-01-06 15:49 ` [PATCH v4 06/12] dt-bindings: media: venus: Convert msm8916 to DT schema Stanimir Varbanov
2020-01-06 22:04 ` Rob Herring
2020-01-08 16:17 ` Stanimir Varbanov
2020-01-06 15:49 ` [PATCH v4 07/12] dt-bindings: media: venus: Convert msm8996 " Stanimir Varbanov
2020-01-06 22:05 ` Rob Herring
2020-01-06 15:49 ` [PATCH v4 08/12] dt-bindings: media: venus: Convert sdm845 " Stanimir Varbanov
2020-01-06 22:06 ` Rob Herring
2020-01-06 15:49 ` [PATCH v4 09/12] dt-bindings: media: venus: Add sdm845v2 " Stanimir Varbanov
2020-01-06 22:07 ` Rob Herring
2020-01-06 15:49 ` [PATCH v4 10/12] venus: core: add sdm845-v2 DT compatible and resource struct Stanimir Varbanov
2020-01-06 15:49 ` [PATCH v4 11/12] arm64: dts: sdm845: follow venus-sdm845v2 DT binding Stanimir Varbanov
2020-02-27 22:38 ` Stanimir Varbanov
2020-02-28 5:59 ` Bjorn Andersson
2020-01-06 15:49 ` [PATCH v4 12/12] dt-bindings: media: venus: delete old binding document Stanimir Varbanov
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