[v1,2/2] gst: Document libcamerasrc multi stream usage

20089 diff mbox series

From: Nicolas Dufresne <nicolas.dufresne@collabora.com>

This adds documentation and an example using gst-launch-1.0.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
---
 README.rst | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Quoting Nicolas Dufresne (2024-05-22 21:39:24)
> From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
> 
> This adds documentation and an example using gst-launch-1.0.
> 
> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
> ---
>  README.rst | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/README.rst b/README.rst
> index 1da7a3d6..d605182b 100644
> --- a/README.rst
> +++ b/README.rst
> @@ -178,6 +178,22 @@ Which can be received on another device over the network with:
>     gst-launch-1.0 tcpclientsrc host=$DEVICE_IP port=5000 ! \
>          multipartdemux ! jpegdec ! autovideosink
>  
> +The GStreamer element also supports multiple streams. This is achieved by
> +requesting additionnal source pads. Downstream caps filteris can be used

s/additionnal/additional/
s/filteris/filters/

> +to choose specific parameters like resolution and pixel format. The pad
> +property ``stream-role`` can be used to select a role.
> +
> +The following example displayis a 640x480 view finder while streamiing JPEG

s/displayis/displays/

> +encoded 800x600 video. You can use the receiver pipleine above to view the
> +remote stream from another device.
> +
> +.. code::
> +
> +   gst-launch-1.0 libcamerasrc name=cs src::stream-role=view-finder src_0::stream-role=video-recording \
> +       cs.src ! queue ! video/x-raw,width=640,height=480 ! videoconvert ! autovideosink \
> +       cs.src_0 ! queue ! video/x-raw,width=800,height=600 ! videoconvert ! \
> +       jpegenc ! multipartmux ! tcpserversink host=0.0.0.0 port=5000
> +

Awesome - thank you - that demonstrates one of the purposes of multiple
stream support - and how to use it with gstreamer!

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

>  .. section-end-getting-started
>  
>  Troubleshooting
> -- 
> 2.45.0
>

Hi Nicolas,

Nice! I was wondering how to accomplish exactly this, thanks for the
documentation.

In addition to what Kieran said:

On 5/22/24 22:39, Nicolas Dufresne wrote:
> From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
> 
> This adds documentation and an example using gst-launch-1.0.
> 
> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
> ---
>  README.rst | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/README.rst b/README.rst
> index 1da7a3d6..d605182b 100644
> --- a/README.rst
> +++ b/README.rst
> @@ -178,6 +178,22 @@ Which can be received on another device over the network with:
>     gst-launch-1.0 tcpclientsrc host=$DEVICE_IP port=5000 ! \
>          multipartdemux ! jpegdec ! autovideosink
>  
> +The GStreamer element also supports multiple streams. This is achieved by
> +requesting additionnal source pads. Downstream caps filteris can be used
> +to choose specific parameters like resolution and pixel format. The pad
> +property ``stream-role`` can be used to select a role.
> +
> +The following example displayis a 640x480 view finder while streamiing JPEG

s/streamiing/streaming

Stuck I key on your keyboard? :-)

> +encoded 800x600 video. You can use the receiver pipleine above to view the

s/pipleine/pipeline

Best regards,
Michael

> +remote stream from another device.
> +
> +.. code::
> +
> +   gst-launch-1.0 libcamerasrc name=cs src::stream-role=view-finder src_0::stream-role=video-recording \
> +       cs.src ! queue ! video/x-raw,width=640,height=480 ! videoconvert ! autovideosink \
> +       cs.src_0 ! queue ! video/x-raw,width=800,height=600 ! videoconvert ! \
> +       jpegenc ! multipartmux ! tcpserversink host=0.0.0.0 port=5000
> +
>  .. section-end-getting-started
>  
>  Troubleshooting