diff options
Diffstat (limited to 'simple-cam.cpp')
| -rw-r--r-- | simple-cam.cpp | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/simple-cam.cpp b/simple-cam.cpp index bfe30d7..6d1d84f 100644 --- a/simple-cam.cpp +++ b/simple-cam.cpp @@ -11,8 +11,13 @@ #include <libcamera/libcamera.h> +#include "event_loop.h" + +#define TIMEOUT_SEC 3 + using namespace libcamera; std::shared_ptr<Camera> camera; +EventLoop loop; /* * -------------------------------------------------------------------- @@ -21,13 +26,26 @@ std::shared_ptr<Camera> camera; * For each Camera::requestCompleted Signal emitted from the Camera the * connected Slot is invoked. * + * The Slot is invoked in the CameraManager's thread, hence one should avoid + * any heavy processing here. The processing of the request shall be re-directed + * to the application's thread instead, so as not to block the CameraManager's + * thread for large amount of time. + * * The Slot receives the Request as a parameter. */ + +static void processRequest(Request *request); + static void requestComplete(Request *request) { if (request->status() == Request::RequestCancelled) return; + loop.callLater(std::bind(&processRequest, request)); +} + +static void processRequest(Request *request) +{ const Request::BufferMap &buffers = request->buffers(); for (auto bufferPair : buffers) { @@ -320,20 +338,11 @@ int main() * * In order to dispatch events received from the video devices, such * as buffer completions, an event loop has to be run. - * - * Libcamera provides its own default event dispatcher realized by - * polling a set of file descriptors, but applications can integrate - * their own even loop with the Libcamera EventDispatcher. - * - * Here, as an example, run the poll-based EventDispatcher for 3 - * seconds. */ - EventDispatcher *dispatcher = cm->eventDispatcher(); - Timer timer; - timer.start(3000); - while (timer.isRunning()) - dispatcher->processEvents(); - + loop.timeout(TIMEOUT_SEC); + int ret = loop.exec(); + std::cout << "Capture ran for " << TIMEOUT_SEC << " seconds and " + << "stopped with exit status: " << ret << std::endl; /* * -------------------------------------------------------------------- * Clean Up |