raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 10:00:17 +00:00
Code Issues Projects Releases Wiki Activity

staging: vc04_services: isp: Set the YUV420/YVU420 format stride to 64 bytes

Browse Source 
The bcm2835 ISP requires the base address of all input/output planes to have 32
byte alignment. Using a Y stride of 32 bytes would not guarantee that the V
plane would fulfil this, e.g. a height of 650 lines would mean the V plane
buffer is not 32 byte aligned for YUV420 formats.

Having a Y stride of 64 bytes would ensure both U and V planes have a 32 byte
alignment, as the luma height will always be an even number of lines.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
This commit is contained in:
Naushir Patuck
2021-06-29 12:50:58 +01:00
committed by Dom Cobley
parent 74c7bb713e
commit 2f7b6498a0
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
View File

@@ -48,7 +48,7 @@ static const struct bcm2835_isp_fmt supported_formats[] = {
/* YUV formats */
.fourcc = V4L2_PIX_FMT_YUV420,
.depth = 8,
.bytesperline_align = 32,
.bytesperline_align = 64,
.mmal_fmt = MMAL_ENCODING_I420,
.size_multiplier_x2 = 3,
.colorspace_mask = V4L2_COLORSPACE_MASK_YUV,
@@ -57,7 +57,7 @@ static const struct bcm2835_isp_fmt supported_formats[] = {
}, {
.fourcc = V4L2_PIX_FMT_YVU420,
.depth = 8,
.bytesperline_align = 32,
.bytesperline_align = 64,
.mmal_fmt = MMAL_ENCODING_YV12,
.size_multiplier_x2 = 3,
.colorspace_mask = V4L2_COLORSPACE_MASK_YUV,