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libcamera: pipeline: Introduce stopDevice()

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Since a queue of waiting Requests has been introduced, not all Requests
queued to the PipelineHandler are immediately queued to the device.

As a Camera can be stopped at any time, it is required to complete the
waiting requests after the ones queued to the device had been completed.

Introduce a pure virtual PipelineHandler::stopDevice() function to be
implemented by pipeline handlers and make the PipelineHandler::stop()
function call it before completing pending requests.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Jacopo Mondi 2021-10-26 15:21:29 +02:00
parent 6cd5c958b7
commit f6b6f15b54
8 changed files with 42 additions and 15 deletions
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3
include/libcamera/internal/pipeline_handler.h
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@ -55,7 +55,7 @@ public:
std::vector<std::unique_ptr<FrameBuffer>> *buffers) = 0;
virtual int start(Camera *camera, const ControlList *controls) = 0;
virtual void stop(Camera *camera) = 0;
void stop(Camera *camera);
bool hasPendingRequests(const Camera *camera) const;
void queueRequest(Request *request);
@ -70,6 +70,7 @@ protected:
void hotplugMediaDevice(MediaDevice *media);
virtual int queueRequestDevice(Camera *camera, Request *request) = 0;
virtual void stopDevice(Camera *camera) = 0;
CameraManager *manager_;