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Date: Mon, 27 Dec 2021 16:06:16 +0900
From: Alexandre Courbot <acourbot@...omium.org>
To: Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
Cc: Linux Media Mailing List <linux-media@...r.kernel.org>,
kernel@...labora.com, Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
courbot@...omium.org, Dafna Hirschfeld <dafna3@...il.com>,
eizan@...omium.org, houlong.wei@...iatek.com,
Hsin-Yi Wang <hsinyi@...omium.org>,
Hans Verkuil <hverkuil@...all.nl>,
Irui Wang <irui.wang@...iatek.com>,
LKML <linux-kernel@...r.kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@...ts.infradead.org>,
Maoguang Meng (孟毛广)
<maoguang.meng@...iatek.com>,
Matthias Brugger <matthias.bgg@...il.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
minghsiu.tsai@...iatek.com, Tomasz Figa <tfiga@...omium.org>,
Tiffany Lin <tiffany.lin@...iatek.com>
Subject: Re: [PATCH v2 5/7] media: mtk-vcodec: replace func vidioc_try_fmt
with two funcs for out/cap
On Wed, Nov 17, 2021 at 10:07 PM Dafna Hirschfeld
<dafna.hirschfeld@...labora.com> wrote:
>
> The function vidioc_try_fmt has a big 'if-else' for
> the capture and output cases. There is hardly any code
> outside of that condition. It is therefore better to split
> that functions into two different functions, one for each case.
>
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
Makes much more sense that way, thanks!
Reviewed-by: Alexandre Courbot <acourbot@...omium.org>
> ---
> .../platform/mtk-vcodec/mtk_vcodec_enc.c | 149 +++++++++---------
> 1 file changed, 72 insertions(+), 77 deletions(-)
>
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> index fb3cf804c96a..be28f2401839 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> @@ -263,87 +263,82 @@ static struct mtk_q_data *mtk_venc_get_q_data(struct mtk_vcodec_ctx *ctx,
> return &ctx->q_data[MTK_Q_DATA_DST];
> }
>
> +static void vidioc_try_fmt_cap(struct v4l2_format *f)
> +{
> + f->fmt.pix_mp.field = V4L2_FIELD_NONE;
> + f->fmt.pix_mp.num_planes = 1;
> + f->fmt.pix_mp.plane_fmt[0].bytesperline = 0;
> + f->fmt.pix_mp.flags = 0;
> +}
> +
> /* V4L2 specification suggests the driver corrects the format struct if any of
> * the dimensions is unsupported
> */
> -static int vidioc_try_fmt(struct mtk_vcodec_ctx *ctx, struct v4l2_format *f,
> - const struct mtk_video_fmt *fmt)
> +static int vidioc_try_fmt_out(struct mtk_vcodec_ctx *ctx, struct v4l2_format *f,
> + const struct mtk_video_fmt *fmt)
> {
> struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
> + int tmp_w, tmp_h;
> + unsigned int max_width, max_height;
>
> pix_fmt_mp->field = V4L2_FIELD_NONE;
>
> - if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
> - pix_fmt_mp->num_planes = 1;
> - pix_fmt_mp->plane_fmt[0].bytesperline = 0;
> - } else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
> - int tmp_w, tmp_h;
> - unsigned int max_width, max_height;
> -
> - if (ctx->dev->enc_capability & MTK_VENC_4K_CAPABILITY_ENABLE) {
> - max_width = MTK_VENC_4K_MAX_W;
> - max_height = MTK_VENC_4K_MAX_H;
> - } else {
> - max_width = MTK_VENC_HD_MAX_W;
> - max_height = MTK_VENC_HD_MAX_H;
> - }
> + if (ctx->dev->enc_capability & MTK_VENC_4K_CAPABILITY_ENABLE) {
> + max_width = MTK_VENC_4K_MAX_W;
> + max_height = MTK_VENC_4K_MAX_H;
> + } else {
> + max_width = MTK_VENC_HD_MAX_W;
> + max_height = MTK_VENC_HD_MAX_H;
> + }
>
> - pix_fmt_mp->height = clamp(pix_fmt_mp->height,
> - MTK_VENC_MIN_H,
> - max_height);
> - pix_fmt_mp->width = clamp(pix_fmt_mp->width,
> - MTK_VENC_MIN_W,
> - max_width);
> + pix_fmt_mp->height = clamp(pix_fmt_mp->height, MTK_VENC_MIN_H, max_height);
> + pix_fmt_mp->width = clamp(pix_fmt_mp->width, MTK_VENC_MIN_W, max_width);
>
> - /* find next closer width align 16, heign align 32, size align
> - * 64 rectangle
> - */
> - tmp_w = pix_fmt_mp->width;
> - tmp_h = pix_fmt_mp->height;
> - v4l_bound_align_image(&pix_fmt_mp->width,
> - MTK_VENC_MIN_W,
> - max_width, 4,
> - &pix_fmt_mp->height,
> - MTK_VENC_MIN_H,
> - max_height, 5, 6);
> -
> - if (pix_fmt_mp->width < tmp_w &&
> - (pix_fmt_mp->width + 16) <= max_width)
> - pix_fmt_mp->width += 16;
> - if (pix_fmt_mp->height < tmp_h &&
> - (pix_fmt_mp->height + 32) <= max_height)
> - pix_fmt_mp->height += 32;
> -
> - mtk_v4l2_debug(0,
> - "before resize width=%d, height=%d, after resize width=%d, height=%d, sizeimage=%d %d",
> - tmp_w, tmp_h, pix_fmt_mp->width,
> - pix_fmt_mp->height,
> - pix_fmt_mp->plane_fmt[0].sizeimage,
> - pix_fmt_mp->plane_fmt[1].sizeimage);
> -
> - pix_fmt_mp->num_planes = fmt->num_planes;
> - pix_fmt_mp->plane_fmt[0].sizeimage =
> - pix_fmt_mp->width * pix_fmt_mp->height +
> - ((ALIGN(pix_fmt_mp->width, 16) * 2) * 16);
> - pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width;
> -
> - if (pix_fmt_mp->num_planes == 2) {
> - pix_fmt_mp->plane_fmt[1].sizeimage =
> - (pix_fmt_mp->width * pix_fmt_mp->height) / 2 +
> - (ALIGN(pix_fmt_mp->width, 16) * 16);
> - pix_fmt_mp->plane_fmt[2].sizeimage = 0;
> - pix_fmt_mp->plane_fmt[1].bytesperline =
> - pix_fmt_mp->width;
> - pix_fmt_mp->plane_fmt[2].bytesperline = 0;
> - } else if (pix_fmt_mp->num_planes == 3) {
> - pix_fmt_mp->plane_fmt[1].sizeimage =
> - pix_fmt_mp->plane_fmt[2].sizeimage =
> - (pix_fmt_mp->width * pix_fmt_mp->height) / 4 +
> - ((ALIGN(pix_fmt_mp->width, 16) / 2) * 16);
> - pix_fmt_mp->plane_fmt[1].bytesperline =
> - pix_fmt_mp->plane_fmt[2].bytesperline =
> - pix_fmt_mp->width / 2;
> - }
> + /* find next closer width align 16, heign align 32, size align
> + * 64 rectangle
> + */
> + tmp_w = pix_fmt_mp->width;
> + tmp_h = pix_fmt_mp->height;
> + v4l_bound_align_image(&pix_fmt_mp->width,
> + MTK_VENC_MIN_W,
> + max_width, 4,
> + &pix_fmt_mp->height,
> + MTK_VENC_MIN_H,
> + max_height, 5, 6);
> +
> + if (pix_fmt_mp->width < tmp_w && (pix_fmt_mp->width + 16) <= max_width)
> + pix_fmt_mp->width += 16;
> + if (pix_fmt_mp->height < tmp_h && (pix_fmt_mp->height + 32) <= max_height)
> + pix_fmt_mp->height += 32;
> +
> + mtk_v4l2_debug(0, "before resize w=%d, h=%d, after resize w=%d, h=%d, sizeimage=%d %d",
> + tmp_w, tmp_h, pix_fmt_mp->width,
> + pix_fmt_mp->height,
> + pix_fmt_mp->plane_fmt[0].sizeimage,
> + pix_fmt_mp->plane_fmt[1].sizeimage);
> +
> + pix_fmt_mp->num_planes = fmt->num_planes;
> + pix_fmt_mp->plane_fmt[0].sizeimage =
> + pix_fmt_mp->width * pix_fmt_mp->height +
> + ((ALIGN(pix_fmt_mp->width, 16) * 2) * 16);
> + pix_fmt_mp->plane_fmt[0].bytesperline = pix_fmt_mp->width;
> +
> + if (pix_fmt_mp->num_planes == 2) {
> + pix_fmt_mp->plane_fmt[1].sizeimage =
> + (pix_fmt_mp->width * pix_fmt_mp->height) / 2 +
> + (ALIGN(pix_fmt_mp->width, 16) * 16);
> + pix_fmt_mp->plane_fmt[2].sizeimage = 0;
> + pix_fmt_mp->plane_fmt[1].bytesperline =
> + pix_fmt_mp->width;
> + pix_fmt_mp->plane_fmt[2].bytesperline = 0;
> + } else if (pix_fmt_mp->num_planes == 3) {
> + pix_fmt_mp->plane_fmt[1].sizeimage =
> + pix_fmt_mp->plane_fmt[2].sizeimage =
> + (pix_fmt_mp->width * pix_fmt_mp->height) / 4 +
> + ((ALIGN(pix_fmt_mp->width, 16) / 2) * 16);
> + pix_fmt_mp->plane_fmt[1].bytesperline =
> + pix_fmt_mp->plane_fmt[2].bytesperline =
> + pix_fmt_mp->width / 2;
> }
>
> pix_fmt_mp->flags = 0;
> @@ -432,9 +427,7 @@ static int vidioc_venc_s_fmt_cap(struct file *file, void *priv,
> }
>
> q_data->fmt = fmt;
> - ret = vidioc_try_fmt(ctx, f, q_data->fmt);
> - if (ret)
> - return ret;
> + vidioc_try_fmt_cap(f);
>
> q_data->coded_width = f->fmt.pix_mp.width;
> q_data->coded_height = f->fmt.pix_mp.height;
> @@ -494,7 +487,7 @@ static int vidioc_venc_s_fmt_out(struct file *file, void *priv,
> f->fmt.pix.pixelformat = fmt->fourcc;
> }
>
> - ret = vidioc_try_fmt(ctx, f, fmt);
> + ret = vidioc_try_fmt_out(ctx, f, fmt);
> if (ret)
> return ret;
>
> @@ -572,7 +565,9 @@ static int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
> f->fmt.pix_mp.quantization = ctx->quantization;
> f->fmt.pix_mp.xfer_func = ctx->xfer_func;
>
> - return vidioc_try_fmt(ctx, f, fmt);
> + vidioc_try_fmt_cap(f);
> +
> + return 0;
> }
>
> static int vidioc_try_fmt_vid_out_mplane(struct file *file, void *priv,
> @@ -594,7 +589,7 @@ static int vidioc_try_fmt_vid_out_mplane(struct file *file, void *priv,
> f->fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_DEFAULT;
> }
>
> - return vidioc_try_fmt(ctx, f, fmt);
> + return vidioc_try_fmt_out(ctx, f, fmt);
> }
>
> static int vidioc_venc_g_selection(struct file *file, void *priv,
> --
> 2.17.1
>
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