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@xxxxxxxxx>
Tested-by: Nicolas Dufresne <nicolas.dufresne@xxxxxxxxxxxxx>
Tested-by: Christopher Obbard <chris.obbard@xxxxxxxxxxxxx>
---
v6:
- No change
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 0a2f4f0d0a07..8ad04d48a023 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -357,6 +357,34 @@ 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)
{
@@ -392,37 +420,19 @@ 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;
@@ -446,22 +456,12 @@ 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);
--
2.46.0
