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@5484Enderbots
Created October 1, 2017 17:37
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A drop-in replacement for VuforiaLocalizer that can be detached from the camera before the opmode ends.
package org.firstinspires.ftc.teamcode;
import org.firstinspires.ftc.robotcore.internal.vuforia.VuforiaLocalizerImpl;
/**
* Copyright (c) 2017 FTC Team 5484 Enderbots
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* This is a VuforiaLocalizer replacement, as it can do everything it does, as well as detach from the camera.
* To use, one can replace statements like:
*
* VuforiaLocalizer vuforia = ClassFactory.createVuforiaLocalizer(parameters);
*
* with
*
* ClosableVuforiaLocalizer vuforia = new ClosableVuforiaLocalizer(parameters);
*
* To close vuforia, simply call vuforia.close();
*/
public class ClosableVuforiaLocalizer extends VuforiaLocalizerImpl {
boolean closed = false;
public ClosableVuforiaLocalizer(Parameters parameters) {
super(parameters);
}
@Override
public void close() {
if (!closed) super.close();
closed = true;
}
}
@archishou
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I LIKEY

@Makiah
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Makiah commented Oct 15, 2017

ME TOO

@EricTownselAdams
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AS DO I

@haithcoc
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Any metric on how long it takes to close the vuforiaLocalizer and release the camera? And then how long to reacquire?
Does this also free up the CameraMonitorView that gets used to hold the view that displays the camera preview?

@guineawheek
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@haithcoc This actually calls the same method the FTC SDK internally calls to close Vuforia when an OpMode ends, so it's a full release. It's about half a second or less to release, but about 1.5-2 seconds to reaquire as it's a full restart.

@HavishNetla
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I am having errors with the ClosableVuforia
12-23 12:29:31.041 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: Event loop threw an exception 12-23 12:29:31.043 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: java.lang.NullPointerException: Attempt to invoke virtual method 'org.firstinspires.ftc.robotcore.external.navigation.VuforiaTrackables org.firstinspires.ftc.teamcode.ClosableVuforiaLocalizer.loadTrackablesFromAsset(java.lang.String)' on a null object reference 12-23 12:29:31.043 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at org.firstinspires.ftc.teamcode.JewelVumark.runOpMode(JewelVumark.java:73) 12-23 12:29:31.044 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at com.qualcomm.robotcore.eventloop.opmode.LinearOpMode$LinearOpModeHelper$1.run(LinearOpMode.java:305) 12-23 12:29:31.044 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at com.qualcomm.robotcore.util.ThreadPool.logThreadLifeCycle(ThreadPool.java:709) 12-23 12:29:31.045 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at com.qualcomm.robotcore.eventloop.opmode.LinearOpMode$LinearOpModeHelper.run(LinearOpMode.java:300) 12-23 12:29:31.046 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 12-23 12:29:31.046 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 12-23 12:29:31.047 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at com.qualcomm.robotcore.util.ThreadPool$ThreadFactoryImpl$1.run(ThreadPool.java:764) 12-23 12:29:31.047 13820-15111/com.qualcomm.ftcrobotcontroller E/EventLoopManager: at java.lang.Thread.run(Thread.java:818)

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