Re: [RFC PATCH 2/5] media: venus: vdec: flag OUTPUT formats with V4L2_FMT_FLAG_DYN_RESOLUTION

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On 6/9/19 4:38 PM, Maxime Jourdan wrote:
> Tag all the coded formats where the venus vdec supports dynamic
> resolution switching.
> 
> Signed-off-by: Maxime Jourdan <mjourdan@xxxxxxxxxxxx>
> ---
>  drivers/media/platform/qcom/venus/core.h |  1 +
>  drivers/media/platform/qcom/venus/vdec.c | 11 +++++++++++
>  2 files changed, 12 insertions(+)
> 
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 7a3feb5cee00..74eb42668627 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -55,6 +55,7 @@ struct venus_format {
>  	u32 pixfmt;
>  	unsigned int num_planes;
>  	u32 type;
> +	u32 flags;
>  };
>  
>  #define MAX_PLANES		4
> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
> index 2a47b9b8c5bc..8aabc23966b8 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -46,42 +46,52 @@ static const struct venus_format vdec_formats[] = {
>  		.pixfmt = V4L2_PIX_FMT_MPEG4,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_MPEG2,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_H263,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_VC1_ANNEX_G,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_VC1_ANNEX_L,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_H264,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_VP8,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_VP9,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_XVID,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	}, {
>  		.pixfmt = V4L2_PIX_FMT_HEVC,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> +		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	},
>  };
>  
> @@ -360,6 +370,7 @@ static int vdec_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
>  		return -EINVAL;
>  
>  	f->pixelformat = fmt->pixfmt;
> +	f->flags = fmt->flags;

Ah, there is a bug in v4l_fill_fmtdesc() in v4l2-ioctl.c: at the end
fmt->flags overwritten, so the V4L2_FMT_FLAG_DYN_RESOLUTION is cleared
again. That line in v4l_fill_fmtdesc() should be |=.

Regards,

	Hans

>  
>  	return 0;
>  }
> 




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