036856aed5
* Move everything into package * Remove .DS_Store * Move scripts and eslintrc to package * Create CODE_OF_CONDUCT.md * fix some links * Update all links (I think) * Update generated docs * Update notice-yarn-changes.yml * Update validate-android.yml * Update validate-cpp.yml * Delete notice-yarn-changes.yml * Update validate-cpp.yml * Update validate-cpp.yml * Update validate-js.yml * Update validate-cpp.yml * Update validate-cpp.yml * wrong c++ style * Revert "wrong c++ style" This reverts commit 55a3575589c6f13f8b05134d83384f55e0601ab2.
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
//
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// Created by Marc Rousavy on 25.07.21.
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//
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#pragma once
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#include <fbjni/fbjni.h>
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#include <jni.h>
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#include <mutex>
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#include <queue>
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namespace vision {
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using namespace facebook;
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/**
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* A Scheduler that runs methods on the Frame Processor Thread (which is a Java Thread).
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* In order to call something on the Java Frame Processor Thread, you have to:
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*
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* 1. Call `dispatchAsync(..)` with the given C++ Method.
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* 2. Internally, `scheduleTrigger()` will get called, which is a Java Method.
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* 3. The `scheduleTrigger()` Java Method will switch to the Frame Processor Java Thread and call
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* `trigger()` on there
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* 4. `trigger()` is a C++ function here that just calls the passed C++ Method from step 1.
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*/
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class JVisionCameraScheduler : public jni::HybridClass<JVisionCameraScheduler> {
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public:
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static auto constexpr kJavaDescriptor =
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"Lcom/mrousavy/camera/frameprocessor/VisionCameraScheduler;";
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static jni::local_ref<jhybriddata> initHybrid(jni::alias_ref<jhybridobject> jThis);
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static void registerNatives();
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// schedules the given job to be run on the VisionCamera FP Thread at some future point in time
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void dispatchAsync(const std::function<void()>& job);
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private:
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friend HybridBase;
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jni::global_ref<JVisionCameraScheduler::javaobject> _javaPart;
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std::queue<std::function<void()>> _jobs;
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std::mutex _mutex;
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explicit JVisionCameraScheduler(jni::alias_ref<JVisionCameraScheduler::jhybridobject> jThis)
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: _javaPart(jni::make_global(jThis)) {}
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// Schedules a call to `trigger` on the VisionCamera FP Thread
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void scheduleTrigger();
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// Calls the latest job in the job queue
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void trigger();
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};
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} // namespace vision
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