[v2,4/4] media: imx.rst: Provide streaming examples for imx6q-sabresd
Commit Message
Improve the documentation by providing examples on how to test camera
capture on imx6q-sabresd via v4l2-ctl and Gstreamer.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Changes since v1:
- Use media-ctl -e to determine the video node. (Steve)
Documentation/media/v4l-drivers/imx.rst | 45 +++++++++++++++++++++++++
1 file changed, 45 insertions(+)
Comments
On 4/9/20 9:29 AM, Fabio Estevam wrote:
> Improve the documentation by providing examples on how to test camera
> capture on imx6q-sabresd via v4l2-ctl and Gstreamer.
>
> Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Steve Longerbeam<slongerbeam@gmail.com>
> ---
> Changes since v1:
> - Use media-ctl -e to determine the video node. (Steve)
>
> Documentation/media/v4l-drivers/imx.rst | 45 +++++++++++++++++++++++++
> 1 file changed, 45 insertions(+)
>
> diff --git a/Documentation/media/v4l-drivers/imx.rst b/Documentation/media/v4l-drivers/imx.rst
> index 955d27582e10..025f21def7dc 100644
> --- a/Documentation/media/v4l-drivers/imx.rst
> +++ b/Documentation/media/v4l-drivers/imx.rst
> @@ -664,6 +664,28 @@ Streaming can then begin on "ipu1_csi0 capture" node. The v4l2-ctl
> tool can be used to select any supported pixelformat on the capture
> device node.
>
> +To determine what is the /dev/video node correspondent to
> +"ipu1_csi0 capture":
> +
> +.. code-block:: none
> +
> + media-ctl -e "ipu1_csi0 capture"
> + /dev/video0
> +
> +/dev/video0 is the streaming element in this case.
> +
> +Starting the streaming via v4l2-ctl:
> +
> +.. code-block:: none
> +
> + v4l2-ctl --stream-mmap -d /dev/video0
> +
> +Starting the streaming via Gstreamer and sending the content to the display:
> +
> +.. code-block:: none
> +
> + gst-launch-1.0 v4l2src device=/dev/video0 ! kmssink
> +
> The following example configures a direct conversion pipeline to capture
> from the OV5640, transmitting on MIPI CSI-2 virtual channel 0. It also
> shows colorspace conversion and scaling at IC output.
> @@ -689,6 +711,29 @@ shows colorspace conversion and scaling at IC output.
>
> Streaming can then begin on "ipu1_ic_prpenc capture" node.
>
> +To determine what is the /dev/video node correspondent to
> +"ipu1_ic_prpenc capture":
> +
> +.. code-block:: none
> +
> + media-ctl -e "ipu1_ic_prpenc capture"
> + /dev/video1
> +
> +
> +/dev/video1 is the streaming element in this case.
> +
> +Starting the streaming via v4l2-ctl:
> +
> +.. code-block:: none
> +
> + v4l2-ctl --stream-mmap -d /dev/video1
> +
> +Starting the streaming via Gstreamer and sending the content to the display:
> +
> +.. code-block:: none
> +
> + gst-launch-1.0 v4l2src device=/dev/video1 ! kmssink
> +
> Known Issues
> ------------
>
@@ -664,6 +664,28 @@ Streaming can then begin on "ipu1_csi0 capture" node. The v4l2-ctl
tool can be used to select any supported pixelformat on the capture
device node.
+To determine what is the /dev/video node correspondent to
+"ipu1_csi0 capture":
+
+.. code-block:: none
+
+ media-ctl -e "ipu1_csi0 capture"
+ /dev/video0
+
+/dev/video0 is the streaming element in this case.
+
+Starting the streaming via v4l2-ctl:
+
+.. code-block:: none
+
+ v4l2-ctl --stream-mmap -d /dev/video0
+
+Starting the streaming via Gstreamer and sending the content to the display:
+
+.. code-block:: none
+
+ gst-launch-1.0 v4l2src device=/dev/video0 ! kmssink
+
The following example configures a direct conversion pipeline to capture
from the OV5640, transmitting on MIPI CSI-2 virtual channel 0. It also
shows colorspace conversion and scaling at IC output.
@@ -689,6 +711,29 @@ shows colorspace conversion and scaling at IC output.
Streaming can then begin on "ipu1_ic_prpenc capture" node.
+To determine what is the /dev/video node correspondent to
+"ipu1_ic_prpenc capture":
+
+.. code-block:: none
+
+ media-ctl -e "ipu1_ic_prpenc capture"
+ /dev/video1
+
+
+/dev/video1 is the streaming element in this case.
+
+Starting the streaming via v4l2-ctl:
+
+.. code-block:: none
+
+ v4l2-ctl --stream-mmap -d /dev/video1
+
+Starting the streaming via Gstreamer and sending the content to the display:
+
+.. code-block:: none
+
+ gst-launch-1.0 v4l2src device=/dev/video1 ! kmssink
+
Known Issues
------------