railbird/react-native-vision-camera
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Lock exposure on start recording

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This commit is contained in:
Volodymyr Smolianinov 2024-09-27 10:35:29 +02:00
parent fcf5fe70f3
commit 66f840eecb
1 changed files with 33 additions and 0 deletions
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33
package/ios/Core/CameraSession+Video.swift
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@ -18,6 +18,8 @@ extension CameraSession {
filePath: String,
onVideoRecorded: @escaping (_ video: Video) -> Void,
onError: @escaping (_ error: CameraError) -> Void) {
lockCurrentExposure(for: captureSession)
// Run on Camera Queue
CameraQueues.cameraQueue.async {
let start = DispatchTime.now()
@ -191,4 +193,35 @@ extension CameraSession {
}
}
}
func lockCurrentExposure(for session: AVCaptureSession) {
guard let captureDevice = AVCaptureDevice.default(for: .video) else {
print("No capture device available")
return
}
do {
// Lock the device for configuration
try captureDevice.lockForConfiguration()
// Get the current exposure duration and ISO
let currentExposureDuration = captureDevice.exposureDuration
let currentISO = captureDevice.iso
// Check if the device supports custom exposure settings
if captureDevice.isExposureModeSupported(.custom) {
// Lock the current exposure and ISO by setting custom exposure mode
captureDevice.setExposureModeCustom(duration: currentExposureDuration, iso: currentISO, completionHandler: nil)
ReactLogger.log(level: .info, message: "Exposure and ISO locked at current values")
} else {
ReactLogger.log(level: .info, message:"Custom exposure mode not supported")
}
// Unlock the device after configuration
captureDevice.unlockForConfiguration()
} catch {
ReactLogger.log(level: .warning, message:"Error locking exposure: \(error)")
}
}
}