@@ -284,8 +284,8 @@ static void rkisp1_rsz_config(struct rkisp1_resizer *rsz,
src_yuv_info = rkisp1_rsz_get_yuv_mbus_info(src_fmt->code);
/*
- * The resizer only works on yuv formats,
- * so return if it is bayer format.
+ * The resizer only works on yuv formats, so return if it is bayer
+ * format.
*/
if (!sink_yuv_info) {
rkisp1_rsz_disable(rsz, when);
@@ -299,15 +299,15 @@ static void rkisp1_rsz_config(struct rkisp1_resizer *rsz,
src_y.width = src_fmt->width;
src_y.height = src_fmt->height;
+ src_c.width = src_y.width / src_yuv_info->hdiv;
+ src_c.height = src_y.height / src_yuv_info->vdiv;
/*
* The resizer is used not only to change the dimensions of the frame
- * but also to change the scale for YUV formats,
- * (4:2:2 -> 4:2:0 for example). So the width/height of the CbCr
- * streams should be set according to the media bus format in the src pad.
+ * but also to change the subsampling for YUV formats (for instance
+ * converting from 4:2:2 to 4:2:0). Check both the luma and chroma
+ * dimensions to decide whether or not to enable the resizer.
*/
- src_c.width = src_y.width / src_yuv_info->hdiv;
- src_c.height = src_y.height / src_yuv_info->vdiv;
dev_dbg(rsz->rkisp1->dev,
"stream %u rsz/scale: Y %ux%u -> %ux%u, CbCr %ux%u -> %ux%u\n",
@@ -315,12 +315,13 @@ static void rkisp1_rsz_config(struct rkisp1_resizer *rsz,
src_fmt->width, src_fmt->height,
sink_c.width, sink_c.height, src_c.width, src_c.height);
- if (sink_c.width == src_c.width && sink_c.height == src_c.height) {
+ if (sink_y->width == src_y.width && sink_y->height == src_y.height &&
+ sink_c.width == src_c.width && sink_c.height == src_c.height) {
rkisp1_rsz_disable(rsz, when);
return;
}
- /* set values in the hw */
+ /* Set values in the hardware. */
rkisp1_rsz_config_regs(rsz, sink_y, &sink_c, &src_y, &src_c, when);
}
The resizer is used to scale the image, but also to change the subsampling of YUV formats. Both the luma and chroma dimensions need to be taken into account to decide whether or not to enable the resizer. The current implementation disables the resizer if the chroma vertical size isn't changed, which would be the case when scaling up by a factor of 2 vertically while at the same time converting from YUV 4:2:2 to 4:2:0. Fix it by checking the luma sizes too. While at it, reflow and clarify comments in the function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> --- .../platform/rockchip/rkisp1/rkisp1-resizer.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-)