Stop viewfinder and close camera

When you aren't using the camera, you can stop the image buffers from streaming. You should also close (disconnect) from the camera.

To use the Camera library, you previously would have called camera_open(), typically with read/write permissions, and started the viewfinder (getting image buffers) as shown here:

...
...
camera_open(CAMERA_UNIT_1, CAMERA_MODE_RW | CAMERA_MODE_ROLL, &cameraHandle);
camera_set_vf_mode(cameraHandle, CAMERA_VFMODE_VIDEO);
camera_start_viewfinder(cameraHandle, NULL, NULL,NULL);
...
...
camera_start_viewfinder )camera_stop_viewfinder(cameraHandle);
camera_close(cameraHandle);

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//Deallocate other

To stop streaming image buffers from the camera, you call camera_stop_viewfinder(), but before your application is done using the camera, ensure that you that call the corresponding camera_stop_*() functions before you call camera_close(). Here are some examples of the corresponding camera_stop_*() calls to make before you call camera_close():

If you had called camera_start_video_group(), call camera_stop_video_group().
If you had called camera_start_encode() or camera_start_video() to encode or record a video file, respectively, call the corresponding camera_stop_encode() or camera_stop_video() functions.
if you're using streams, deallocate any buffers that you consumed for the Stream objects. For more information about using Streams, see “Use streams.”
Call camera_stop_viewfinder() to stop getting image buffers from the camera. This calls stops the image buffers from streaming from the camera.

After you have called the corresponding camera_stop_* functions, call camera_close() last, which disconnects the application from the camera, releases all the resources that was allocated to the camera, and frees the handle to the camera. If you had called camera_open() with the (CAMERA_MODE_WRITE mode) flag, but don't call camera_close(), other applications won't be able to access the viewfinder, camera configuration settings, and the camera roll (CAMERA_MODE_WRITE mode).

Note: If you are using Screen, you must release the resources that were Screen allocated, which includes deallocating windows or contexts that you created. This includes the viewfinder window that you created and the parent window if you you no longer require it. For example, you can call the screen_destroy_window() and screen_destroy_context(). For more information, see the Screen Developer's Guide. For an example, see “Example: Show Viewfinder window.”

For example:

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int err;
...

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err = camera_stop_viewfinder(handle)
err = camera_close(handle);
...
...

The handle that you pass to the camera_close() must be the handle you got from calling camera_open(), otherwise undefined results may occur.