Bryce,
Here is a branch that uses the legacy VIDIOC_QUERYCTRL to query the
controls, instead of VIDIOC_QUERY_EXT_CTRL. I believe this will make it
more compatible with older kernels. Can you test it?
https://git.collabora.com/cgit/user/fedke.m/weston.git/log/?h=yflip_queryctl_legacy_01
Thanks,
-mf
On 02/07/2017 08:17 PM, Bryce Harrington wrote:
On Tue, Feb 07, 2017 at 11:48:47AM +0200, Pekka Paalanen wrote:
On Mon, 6 Feb 2017 12:57:41 -0500
Micah Fedke <[email protected]> wrote:
The v4l2 API can be queried to detect if the input video image is
horizontally or vertically flipped. If the image is y-flipped, we can
set the ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT flag to notify the
compositor. If the image is h-flipped, we can only print a warning
since linux_buffer_params_v1 does not support horizontal flipping.
Signed-off-by: Micah Fedke <[email protected]>
---
This version addresses Pekka's comments by renaming check_v4l2_control to
check_v4l2_control_bool, removing the len parameter, separating out the logic
tests in check_v4l2_control_bool and fixing spacing issues.
clients/simple-dmabuf-v4l.c | 62 +++++++++++++++++++++++++++++++++++++++------
1 file changed, 54 insertions(+), 8 deletions(-)
Hi,
looks fine, pushed with my R-b:
9a200d7..0fee977 master -> master
Breaks the build on older linux kernels.
CC clients/weston_simple_dmabuf_v4l-simple-dmabuf-v4l.o
clients/simple-dmabuf-v4l.c:358:25: warning: ‘struct v4l2_query_ext_ctrl’
declared inside parameter list [enabled by default]
const int expected_value)
^
clients/simple-dmabuf-v4l.c:358:25: warning: its scope is only this definition
or declaration, which is probably not what you want [enabled by default]
clients/simple-dmabuf-v4l.c: In function ‘check_v4l2_control_bool’:
clients/simple-dmabuf-v4l.c:363:18: error: dereferencing pointer to incomplete
type
ctrl.id = qectrl->id;
^
et al.
Builds ok with the patch reverted, or with --disable-simple-dmabuf-v4l-client
set.
Bryce
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