Before, Frame Processors ran on a separate Thread.
After, Frame Processors run fully synchronous and always at the same FPS as the Camera.
Two new functions have been introduced:
* `runAtTargetFps(fps: number, func: () => void)`: Runs the given code as often as the given `fps`, effectively throttling it's calls.
* `runAsync(frame: Frame, func: () => void)`: Runs the given function on a separate Thread for Frame Processing. A strong reference to the Frame is held as long as the function takes to execute.
You can use `runAtTargetFps` to throttle calls to a specific API (e.g. if your Camera is running at 60 FPS, but you only want to run face detection at ~25 FPS, use `runAtTargetFps(25, ...)`.)
You can use `runAsync` to run a heavy algorithm asynchronous, so that the Camera is not blocked while your algorithm runs. This is useful if your main sync processor draws something, and your async processor is doing some image analysis on the side.
You can also combine both functions.
Examples:
```js
const frameProcessor = useFrameProcessor((frame) => {
'worklet'
console.log("I'm running at 60 FPS!")
}, [])
```
```js
const frameProcessor = useFrameProcessor((frame) => {
'worklet'
console.log("I'm running at 60 FPS!")
runAtTargetFps(10, () => {
'worklet'
console.log("I'm running at 10 FPS!")
})
}, [])
```
```js
const frameProcessor = useFrameProcessor((frame) => {
'worklet'
console.log("I'm running at 60 FPS!")
runAsync(frame, () => {
'worklet'
console.log("I'm running on another Thread, I can block for longer!")
})
}, [])
```
```js
const frameProcessor = useFrameProcessor((frame) => {
'worklet'
console.log("I'm running at 60 FPS!")
runAtTargetFps(10, () => {
'worklet'
runAsync(frame, () => {
'worklet'
console.log("I'm running on another Thread at 10 FPS, I can block for longer!")
})
})
}, [])
```
* Add custom `onViewReady` event to get layout
`componentDidMount` is async, so the native view _might_ not exist yet causing a race condition in the `setFrameProcessor` code.
This PR fixes this by calling `setFrameProcessor` only after the native view has actually mounted, and to ensure that I created a custom event that fires at that point.
* Update CameraView.swift
* Add `onFrameProcessorPerformanceSuggestionAvailable` and make `frameProcessorFps` support `auto`
* Implement performance suggestion and auto-adjusting
* Fix FPS setting, evaluate correctly
* Floor suggested FPS
* Remove `console.log` for frame drop warnings.
* Swift format
* Use `30` magic number
* only call if FPS is different
* Update CameraView.swift
* Implement Android 1/2
* Cleanup
* Update `frameProcessorFps` if available
* Optimize `FrameProcessorPerformanceDataCollector` initialization
* Cache call
* Set frameProcessorFps directly (Kotlin setter)
* Don't suggest if same value
* Call suggestion every second
* reset time on set
* Always store 15 last samples
* reset counter too
* Update FrameProcessorPerformanceDataCollector.swift
* Update CameraView+RecordVideo.swift
* Update CameraView.kt
* iOS: Redesign evaluation
* Update CameraView+RecordVideo.swift
* Android: Redesign evaluation
* Update CameraView.kt
* Update REA to latest alpha and install RNScreens
* Fix frameProcessorFps updating
