diff options
| author | Naushir Patuck <naush@raspberrypi.com> | 2022-04-06 13:35:52 +0100 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2022-04-06 15:44:32 +0300 |
| commit | 16f3d2de50ffa35295240e247d8cc4cffabf1a53 (patch) | |
| tree | 846a0a74e66389f4528e976bee0ea4ca76fecff2 /include | |
| parent | 226792a1411bd485e087bf40e241611966099b52 (diff) | |
libcamera: v4l2_videodevice: Add a dequeue timer
Add a timer that gets reset on every buffer dequeue event. If the timeout
expires, optionally call a slot in the pipeline handler to handle this
condition. This may be useful in detecting and handling stalls in either the
hardware or device driver.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/libcamera/internal/v4l2_videodevice.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/libcamera/internal/v4l2_videodevice.h b/include/libcamera/internal/v4l2_videodevice.h index cfeae7bd..9c9493cc 100644 --- a/include/libcamera/internal/v4l2_videodevice.h +++ b/include/libcamera/internal/v4l2_videodevice.h @@ -20,7 +20,9 @@ #include <libcamera/base/class.h> #include <libcamera/base/log.h> #include <libcamera/base/signal.h> +#include <libcamera/base/timer.h> #include <libcamera/base/unique_fd.h> +#include <libcamera/base/utils.h> #include <libcamera/color_space.h> #include <libcamera/framebuffer.h> @@ -217,6 +219,9 @@ public: int streamOn(); int streamOff(); + void setDequeueTimeout(utils::Duration timeout); + Signal<> dequeueTimeout; + static std::unique_ptr<V4L2VideoDevice> fromEntityName(const MediaDevice *media, const std::string &entity); @@ -253,6 +258,8 @@ private: void bufferAvailable(); FrameBuffer *dequeueBuffer(); + void watchdogExpired(); + V4L2Capability caps_; V4L2DeviceFormat format_; const PixelFormatInfo *formatInfo_; @@ -266,6 +273,9 @@ private: EventNotifier *fdBufferNotifier_; State state_; + + Timer watchdog_; + utils::Duration watchdogDuration_; }; class V4L2M2MDevice |