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Date: Tue, 18 Jun 2024 19:46:25 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>, Mauro Carvalho Chehab
<mchehab@...nel.org>, Hans Verkuil <hverkuil-cisco@...all.nl>
Cc: Alex Bee <knaerzche@...il.com>, Nicolas Dufresne
<nicolas.dufresne@...labora.com>, Benjamin Gaignard
<benjamin.gaignard@...labora.com>, Sebastian Fricke
<sebastian.fricke@...labora.com>, Christopher Obbard
<chris.obbard@...labora.com>, Detlev Casanova
<detlev.casanova@...labora.com>, linux-media@...r.kernel.org,
linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
linux-kernel@...r.kernel.org, Jonas Karlman <jonas@...boo.se>
Subject: [PATCH v5 01/10] media: v4l2-common: Add helpers to calculate bytesperline and sizeimage
Add helper functions to calculate plane bytesperline and sizeimage,
these new helpers consider bpp div, block width and height when
calculating plane bytesperline and sizeimage.
Signed-off-by: Jonas Karlman <jonas@...boo.se>
Tested-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
Tested-by: Christopher Obbard <chris.obbard@...labora.com>
---
v5:
- Collect t-b tags
v4:
- No change
v3:
- Consider bpp_div in calculation
drivers/media/v4l2-core/v4l2-common.c | 78 +++++++++++++--------------
1 file changed, 39 insertions(+), 39 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 4165c815faef..9f749384a4f5 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -355,6 +355,34 @@ static inline unsigned int v4l2_format_block_height(const struct v4l2_format_inf
return info->block_h[plane];
}
+static inline unsigned int v4l2_format_plane_width(const struct v4l2_format_info *info, int plane,
+ unsigned int width)
+{
+ unsigned int hdiv = plane ? info->hdiv : 1;
+ unsigned int aligned_width =
+ ALIGN(width, v4l2_format_block_width(info, plane));
+
+ return DIV_ROUND_UP(aligned_width, hdiv) *
+ info->bpp[plane] / info->bpp_div[plane];
+}
+
+static inline unsigned int v4l2_format_plane_height(const struct v4l2_format_info *info, int plane,
+ unsigned int height)
+{
+ unsigned int vdiv = plane ? info->vdiv : 1;
+ unsigned int aligned_height =
+ ALIGN(height, v4l2_format_block_height(info, plane));
+
+ return DIV_ROUND_UP(aligned_height, vdiv);
+}
+
+static inline unsigned int v4l2_format_plane_size(const struct v4l2_format_info *info, int plane,
+ unsigned int width, unsigned int height)
+{
+ return v4l2_format_plane_width(info, plane, width) *
+ v4l2_format_plane_height(info, plane, height);
+}
+
void v4l2_apply_frmsize_constraints(u32 *width, u32 *height,
const struct v4l2_frmsize_stepwise *frmsize)
{
@@ -390,37 +418,19 @@ int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt,
if (info->mem_planes == 1) {
plane = &pixfmt->plane_fmt[0];
- plane->bytesperline = ALIGN(width, v4l2_format_block_width(info, 0)) * info->bpp[0] / info->bpp_div[0];
+ plane->bytesperline = v4l2_format_plane_width(info, 0, width);
plane->sizeimage = 0;
- for (i = 0; i < info->comp_planes; i++) {
- unsigned int hdiv = (i == 0) ? 1 : info->hdiv;
- unsigned int vdiv = (i == 0) ? 1 : info->vdiv;
- unsigned int aligned_width;
- unsigned int aligned_height;
-
- aligned_width = ALIGN(width, v4l2_format_block_width(info, i));
- aligned_height = ALIGN(height, v4l2_format_block_height(info, i));
-
- plane->sizeimage += info->bpp[i] *
- DIV_ROUND_UP(aligned_width, hdiv) *
- DIV_ROUND_UP(aligned_height, vdiv) / info->bpp_div[i];
- }
+ for (i = 0; i < info->comp_planes; i++)
+ plane->sizeimage +=
+ v4l2_format_plane_size(info, i, width, height);
} else {
for (i = 0; i < info->comp_planes; i++) {
- unsigned int hdiv = (i == 0) ? 1 : info->hdiv;
- unsigned int vdiv = (i == 0) ? 1 : info->vdiv;
- unsigned int aligned_width;
- unsigned int aligned_height;
-
- aligned_width = ALIGN(width, v4l2_format_block_width(info, i));
- aligned_height = ALIGN(height, v4l2_format_block_height(info, i));
-
plane = &pixfmt->plane_fmt[i];
plane->bytesperline =
- info->bpp[i] * DIV_ROUND_UP(aligned_width, hdiv) / info->bpp_div[i];
- plane->sizeimage =
- plane->bytesperline * DIV_ROUND_UP(aligned_height, vdiv);
+ v4l2_format_plane_width(info, i, width);
+ plane->sizeimage = plane->bytesperline *
+ v4l2_format_plane_height(info, i, height);
}
}
return 0;
@@ -444,22 +454,12 @@ int v4l2_fill_pixfmt(struct v4l2_pix_format *pixfmt, u32 pixelformat,
pixfmt->width = width;
pixfmt->height = height;
pixfmt->pixelformat = pixelformat;
- pixfmt->bytesperline = ALIGN(width, v4l2_format_block_width(info, 0)) * info->bpp[0] / info->bpp_div[0];
+ pixfmt->bytesperline = v4l2_format_plane_width(info, 0, width);
pixfmt->sizeimage = 0;
- for (i = 0; i < info->comp_planes; i++) {
- unsigned int hdiv = (i == 0) ? 1 : info->hdiv;
- unsigned int vdiv = (i == 0) ? 1 : info->vdiv;
- unsigned int aligned_width;
- unsigned int aligned_height;
-
- aligned_width = ALIGN(width, v4l2_format_block_width(info, i));
- aligned_height = ALIGN(height, v4l2_format_block_height(info, i));
-
- pixfmt->sizeimage += info->bpp[i] *
- DIV_ROUND_UP(aligned_width, hdiv) *
- DIV_ROUND_UP(aligned_height, vdiv) / info->bpp_div[i];
- }
+ for (i = 0; i < info->comp_planes; i++)
+ pixfmt->sizeimage +=
+ v4l2_format_plane_size(info, i, width, height);
return 0;
}
EXPORT_SYMBOL_GPL(v4l2_fill_pixfmt);
--
2.45.2
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