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Message-ID: <0f7a33c1-f894-adfe-94d7-89296893128f@linaro.org>
Date:   Tue, 23 May 2023 10:02:17 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Dikshita Agarwal <quic_dikshita@...cinc.com>,
        linux-media@...r.kernel.org, stanimir.k.varbanov@...il.com,
        quic_vgarodia@...cinc.com, agross@...nel.org, andersson@...nel.org,
        mchehab@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] venus: replace arrary index with enum for supported
 formats



On 22.05.2023 08:17, Dikshita Agarwal wrote:
> Use enums to list supported formats for encoder and decoder
> instead of array index which was a error prone design.
> 
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
Thanks a lot.

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

>  drivers/media/platform/qcom/venus/core.h | 16 ++++++++
>  drivers/media/platform/qcom/venus/vdec.c | 63 +++++++++++++++++++-------------
>  drivers/media/platform/qcom/venus/venc.c | 31 +++++++++-------
>  3 files changed, 72 insertions(+), 38 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 12a42fb..e988ed4 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -83,6 +83,22 @@ struct venus_resources {
>  	const char *fwname;
>  };
>  
> +enum venus_fmt {
> +	VENUS_FMT_NV12			= 0,
> +	VENUS_FMT_QC08C			= 1,
> +	VENUS_FMT_QC10C			= 2,
> +	VENUS_FMT_H264			= 3,
> +	VENUS_FMT_VP8			= 4,
> +	VENUS_FMT_VP9			= 5,
> +	VENUS_FMT_HEVC			= 6,
> +	VENUS_FMT_VC1_ANNEX_G		= 7,
> +	VENUS_FMT_VC1_ANNEX_L		= 8,
> +	VENUS_FMT_MPEG4			= 9,
> +	VENUS_FMT_MPEG2			= 10,
> +	VENUS_FMT_H263			= 11,
> +	VENUS_FMT_XVID			= 12,
Nit: I don't think the '= n' is necessary here, as it doesn't
map to anything in hw/fw (or does it?)

Konrad

> +};
> +
>  struct venus_format {
>  	u32 pixfmt;
>  	unsigned int num_planes;
> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
> index c6f0fd08..bab985b 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -30,69 +30,82 @@
>   * - future firmware versions could add support for >1 planes
>   */
>  static const struct venus_format vdec_formats[] = {
> -	{
> +	[VENUS_FMT_NV12] = {
>  		.pixfmt = V4L2_PIX_FMT_NV12,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> -	}, {
> +	},
> +	[VENUS_FMT_QC08C] = {
>  		.pixfmt = V4L2_PIX_FMT_QC08C,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> -	}, {
> +	},
> +	[VENUS_FMT_QC10C] = {
>  		.pixfmt = V4L2_PIX_FMT_QC10C,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> -	}, {
> -		.pixfmt = V4L2_PIX_FMT_MPEG4,
> +	},
> +	[VENUS_FMT_H264] = {
> +		.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_MPEG2,
> +	},
> +	[VENUS_FMT_VP8] = {
> +		.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_H263,
> +	},
> +	[VENUS_FMT_VP9] = {
> +		.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_VC1_ANNEX_G,
> +	},
> +	[VENUS_FMT_HEVC] = {
> +		.pixfmt = V4L2_PIX_FMT_HEVC,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
>  		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
> -	}, {
> -		.pixfmt = V4L2_PIX_FMT_VC1_ANNEX_L,
> +	},
> +	[VENUS_FMT_VC1_ANNEX_G] = {
> +		.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_H264,
> +	},
> +	[VENUS_FMT_VC1_ANNEX_L] = {
> +		.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_VP8,
> +	},
> +	[VENUS_FMT_MPEG4] = {
> +		.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_VP9,
> +	},
> +	[VENUS_FMT_MPEG2] = {
> +		.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_XVID,
> +	},
> +	[VENUS_FMT_H263] = {
> +		.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_HEVC,
> +	},
> +	[VENUS_FMT_XVID] = {
> +		.pixfmt = V4L2_PIX_FMT_XVID,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
>  		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
>  	},
> +
>  };
>  
>  static const struct venus_format *
> @@ -1575,8 +1588,8 @@ static const struct hfi_inst_ops vdec_hfi_ops = {
>  static void vdec_inst_init(struct venus_inst *inst)
>  {
>  	inst->hfi_codec = HFI_VIDEO_CODEC_H264;
> -	inst->fmt_out = &vdec_formats[8];
> -	inst->fmt_cap = &vdec_formats[0];
> +	inst->fmt_out = &vdec_formats[VENUS_FMT_H264];
> +	inst->fmt_cap = &vdec_formats[VENUS_FMT_NV12];
>  	inst->width = frame_width_min(inst);
>  	inst->height = ALIGN(frame_height_min(inst), 32);
>  	inst->crop.left = 0;
> diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
> index 4666f42..b60772c 100644
> --- a/drivers/media/platform/qcom/venus/venc.c
> +++ b/drivers/media/platform/qcom/venus/venc.c
> @@ -32,28 +32,33 @@
>   * - future firmware versions could add support for >1 planes
>   */
>  static const struct venus_format venc_formats[] = {
> -	{
> +	[VENUS_FMT_NV12] = {
>  		.pixfmt = V4L2_PIX_FMT_NV12,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
> -	}, {
> -		.pixfmt = V4L2_PIX_FMT_MPEG4,
> +	},
> +	[VENUS_FMT_H264] = {
> +		.pixfmt = V4L2_PIX_FMT_H264,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> -	}, {
> -		.pixfmt = V4L2_PIX_FMT_H263,
> +	},
> +	[VENUS_FMT_VP8] = {
> +		.pixfmt = V4L2_PIX_FMT_VP8,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> -	}, {
> -		.pixfmt = V4L2_PIX_FMT_H264,
> +	},
> +	[VENUS_FMT_HEVC] = {
> +		.pixfmt = V4L2_PIX_FMT_HEVC,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> -	}, {
> -		.pixfmt = V4L2_PIX_FMT_VP8,
> +	},
> +	[VENUS_FMT_MPEG4] = {
> +		.pixfmt = V4L2_PIX_FMT_MPEG4,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
> -	}, {
> -		.pixfmt = V4L2_PIX_FMT_HEVC,
> +	},
> +	[VENUS_FMT_H263] = {
> +		.pixfmt = V4L2_PIX_FMT_H263,
>  		.num_planes = 1,
>  		.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
>  	},
> @@ -1416,8 +1421,8 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
>  
>  static void venc_inst_init(struct venus_inst *inst)
>  {
> -	inst->fmt_cap = &venc_formats[3];
> -	inst->fmt_out = &venc_formats[0];
> +	inst->fmt_cap = &venc_formats[VENUS_FMT_H264];
> +	inst->fmt_out = &venc_formats[VENUS_FMT_NV12];
>  	inst->width = 1280;
>  	inst->height = ALIGN(720, 32);
>  	inst->out_width = 1280;

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