linux-kernel - Re: [PATCH v2 10/15] media: vimc: Propagate multiplanar state in the stream

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Date:   Fri, 12 Apr 2019 19:50:26 -0300
From:   Helen Koike <helen.koike@...labora.com>
To:     André Almeida <andrealmeid@...labora.com>,
        linux-media@...r.kernel.org
Cc:     mchehab@...nel.org, hverkuil@...all.nl, lucmaga@...il.com,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        lkcamp@...ts.libreplanetbr.org
Subject: Re: [PATCH v2 10/15] media: vimc: Propagate multiplanar state in the
 stream



On 3/27/19 12:17 PM, André Almeida wrote:
> Add a multiplanar flag in vimc_stream in order to propagate the
> state (singleplanar/multiplanar) to subdevices at the stream.
> 
> Signed-off-by: André Almeida <andrealmeid@...labora.com>
> ---
> Change in v2:
> - New commit
> 
>  drivers/media/platform/vimc/vimc-capture.c  | 7 +++++--
>  drivers/media/platform/vimc/vimc-streamer.h | 3 +++
>  2 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
> index 57bc2b64b093..3c93fbd51629 100644
> --- a/drivers/media/platform/vimc/vimc-capture.c
> +++ b/drivers/media/platform/vimc/vimc-capture.c
> @@ -454,12 +454,15 @@ static int vimc_cap_start_streaming(struct vb2_queue *vq, unsigned int count)
>  		return ret;
>  	}
>  
> -	if (IS_MULTIPLANAR(vcap))
> +	if (IS_MULTIPLANAR(vcap)) {
>  		vcap->stream.producer_pixfmt =
>  			vcap->format.fmt.pix_mp.pixelformat;
> -	else
> +		vcap->stream.multiplanar = true;
> +	} else {
>  		vcap->stream.producer_pixfmt =
>  			vcap->format.fmt.pix.pixelformat;
> +		vcap->stream.multiplanar = false;
> +	}

I believe you could have just:

vcap->stream.multiplanar = IS_MULTIPLANAR(vcap);

>  
>  	ret = vimc_streamer_s_stream(&vcap->stream, &vcap->ved, 1);
>  	if (ret) {
> diff --git a/drivers/media/platform/vimc/vimc-streamer.h b/drivers/media/platform/vimc/vimc-streamer.h
> index 2b3667408794..4878e0b72ea7 100644
> --- a/drivers/media/platform/vimc/vimc-streamer.h
> +++ b/drivers/media/platform/vimc/vimc-streamer.h
> @@ -25,6 +25,8 @@
>   * processed in the pipeline.
>   * @pipe_size:		size of @ved_pipeline
>   * @kthread:		thread that generates the frames of the stream.
> + * @multiplanar:	sets if the stream is running in multiplanar or
> + * singleplanar format mode
>   * @producer_pixfmt:	the pixel format requested from the pipeline. This must
>   * be set just before calling vimc_streamer_s_stream(ent, 1). This value is
>   * propagated up to the source of the base image (usually a sensor node) and
> @@ -40,6 +42,7 @@ struct vimc_stream {
>  	struct vimc_ent_device *ved_pipeline[VIMC_STREAMER_PIPELINE_MAX_SIZE];
>  	unsigned int pipe_size;
>  	struct task_struct *kthread;
> +	bool multiplanar;
>  	u32 producer_pixfmt;
>  };
>  
>