[libcamera-devel] [PATCH 2/3] libcamera: ipu3: Accept an empty roles list

[Niklas Söderlund]

Hi Jacopo,

Thanks for your work.

On 2020-06-28 17:55:38 +0200, Jacopo Mondi wrote:
> The IPU3 pipeline handler that does not support receiving an empty list
> of roles at generateConfiguration() time. This contradicts the camera
> API which allows application to generate empty CameraConfiguration to
> be later manually filled.
> 
> Fix this by returning an empty CameraConfiguration if the list of
> requested roles is empty. While at it, align the style with the other
> pipeline handlers.
> 
> Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>

I'm not sure this is the way we wish this API to work in the end. But a 
good start is that all pipelines do the same thing :-)

Reviewed-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>

> ---
>  src/libcamera/pipeline/ipu3/ipu3.cpp | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
> index ef57196c32da..cbf19793c43e 100644
> --- a/src/libcamera/pipeline/ipu3/ipu3.cpp
> +++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
> @@ -292,14 +292,15 @@ CameraConfiguration *PipelineHandlerIPU3::generateConfiguration(Camera *camera,
>  	const StreamRoles &roles)
>  {
>  	IPU3CameraData *data = cameraData(camera);
> -	IPU3CameraConfiguration *config;
> +	IPU3CameraConfiguration *config = new IPU3CameraConfiguration(camera, data);
>  	std::set<Stream *> streams = {
>  		&data->outStream_,
>  		&data->vfStream_,
>  		&data->rawStream_,
>  	};
>  
> -	config = new IPU3CameraConfiguration(camera, data);
> +	if (roles.empty())
> +		return config;
>  
>  	for (const StreamRole role : roles) {
>  		StreamConfiguration cfg = {};
> -- 
> 2.27.0
> 
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-- 
Regards,
Niklas Söderlund