mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
573 lines
24 KiB
Swift
573 lines
24 KiB
Swift
import Foundation
|
|
import AVFoundation
|
|
import UIKit
|
|
import SwiftSignalKit
|
|
import CoreImage
|
|
import Vision
|
|
import VideoToolbox
|
|
import TelegramCore
|
|
|
|
public enum VideoCaptureResult: Equatable {
|
|
public struct Result {
|
|
public let path: String
|
|
public let thumbnail: UIImage
|
|
public let isMirrored: Bool
|
|
public let dimensions: CGSize
|
|
}
|
|
|
|
case finished(main: Result, additional: Result?, duration: Double, positionChangeTimestamps: [(Bool, Double)], captureTimestamp: Double)
|
|
case failed
|
|
|
|
public static func == (lhs: VideoCaptureResult, rhs: VideoCaptureResult) -> Bool {
|
|
switch lhs {
|
|
case .failed:
|
|
if case .failed = rhs {
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
case let .finished(_, _, lhsDuration, lhsChangeTimestamps, lhsTimestamp):
|
|
if case let .finished(_, _, rhsDuration, rhsChangeTimestamps, rhsTimestamp) = rhs, lhsDuration == rhsDuration, lhsTimestamp == rhsTimestamp {
|
|
if lhsChangeTimestamps.count != rhsChangeTimestamps.count {
|
|
return false
|
|
}
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public struct CameraCode: Equatable {
|
|
public enum CodeType {
|
|
case qr
|
|
}
|
|
|
|
public let type: CodeType
|
|
public let message: String
|
|
public let corners: [CGPoint]
|
|
|
|
public init(type: CameraCode.CodeType, message: String, corners: [CGPoint]) {
|
|
self.type = type
|
|
self.message = message
|
|
self.corners = corners
|
|
}
|
|
|
|
public var boundingBox: CGRect {
|
|
let x = self.corners.map { $0.x }
|
|
let y = self.corners.map { $0.y }
|
|
if let minX = x.min(), let minY = y.min(), let maxX = x.max(), let maxY = y.max() {
|
|
return CGRect(x: minX, y: minY, width: abs(maxX - minX), height: abs(maxY - minY))
|
|
}
|
|
return CGRect.null
|
|
}
|
|
|
|
public static func == (lhs: CameraCode, rhs: CameraCode) -> Bool {
|
|
if lhs.type != rhs.type {
|
|
return false
|
|
}
|
|
if lhs.message != rhs.message {
|
|
return false
|
|
}
|
|
if lhs.corners != rhs.corners {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
}
|
|
|
|
final class CameraOutput: NSObject {
|
|
let exclusive: Bool
|
|
let ciContext: CIContext
|
|
let isVideoMessage: Bool
|
|
|
|
let photoOutput = AVCapturePhotoOutput()
|
|
let videoOutput = AVCaptureVideoDataOutput()
|
|
let audioOutput = AVCaptureAudioDataOutput()
|
|
let metadataOutput = AVCaptureMetadataOutput()
|
|
|
|
private var photoConnection: AVCaptureConnection?
|
|
private var videoConnection: AVCaptureConnection?
|
|
private var previewConnection: AVCaptureConnection?
|
|
|
|
private var roundVideoFilter: CameraRoundVideoFilter?
|
|
private let semaphore = DispatchSemaphore(value: 1)
|
|
|
|
private let queue = DispatchQueue(label: "")
|
|
private let metadataQueue = DispatchQueue(label: "")
|
|
|
|
private var photoCaptureRequests: [Int64: PhotoCaptureContext] = [:]
|
|
private var videoRecorder: VideoRecorder?
|
|
|
|
var processSampleBuffer: ((CMSampleBuffer, CVImageBuffer, AVCaptureConnection) -> Void)?
|
|
var processAudioBuffer: ((CMSampleBuffer) -> Void)?
|
|
var processCodes: (([CameraCode]) -> Void)?
|
|
|
|
init(exclusive: Bool, ciContext: CIContext, use32BGRA: Bool = false) {
|
|
self.exclusive = exclusive
|
|
self.ciContext = ciContext
|
|
self.isVideoMessage = use32BGRA
|
|
|
|
super.init()
|
|
|
|
if #available(iOS 13.0, *) {
|
|
self.photoOutput.maxPhotoQualityPrioritization = .balanced
|
|
}
|
|
|
|
self.videoOutput.alwaysDiscardsLateVideoFrames = false
|
|
self.videoOutput.videoSettings = [kCVPixelBufferPixelFormatTypeKey: use32BGRA ? kCVPixelFormatType_32BGRA : kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange] as [String : Any]
|
|
}
|
|
|
|
deinit {
|
|
self.videoOutput.setSampleBufferDelegate(nil, queue: nil)
|
|
self.audioOutput.setSampleBufferDelegate(nil, queue: nil)
|
|
}
|
|
|
|
func configure(for session: CameraSession, device: CameraDevice, input: CameraInput, previewView: CameraSimplePreviewView?, audio: Bool, photo: Bool, metadata: Bool) {
|
|
if session.session.canAddOutput(self.videoOutput) {
|
|
if session.hasMultiCam {
|
|
session.session.addOutputWithNoConnections(self.videoOutput)
|
|
} else {
|
|
session.session.addOutput(self.videoOutput)
|
|
}
|
|
self.videoOutput.setSampleBufferDelegate(self, queue: self.queue)
|
|
} else {
|
|
Logger.shared.log("Camera", "Can't add video output")
|
|
}
|
|
if audio, session.session.canAddOutput(self.audioOutput) {
|
|
session.session.addOutput(self.audioOutput)
|
|
self.audioOutput.setSampleBufferDelegate(self, queue: self.queue)
|
|
}
|
|
if photo, session.session.canAddOutput(self.photoOutput) {
|
|
if session.hasMultiCam {
|
|
session.session.addOutputWithNoConnections(self.photoOutput)
|
|
} else {
|
|
session.session.addOutput(self.photoOutput)
|
|
}
|
|
} else {
|
|
Logger.shared.log("Camera", "Can't add photo output")
|
|
}
|
|
if metadata, session.session.canAddOutput(self.metadataOutput) {
|
|
session.session.addOutput(self.metadataOutput)
|
|
|
|
self.metadataOutput.setMetadataObjectsDelegate(self, queue: self.metadataQueue)
|
|
if self.metadataOutput.availableMetadataObjectTypes.contains(.qr) {
|
|
self.metadataOutput.metadataObjectTypes = [.qr]
|
|
}
|
|
}
|
|
|
|
if #available(iOS 13.0, *), session.hasMultiCam {
|
|
if let device = device.videoDevice, let ports = input.videoInput?.ports(for: AVMediaType.video, sourceDeviceType: device.deviceType, sourceDevicePosition: device.position) {
|
|
if let previewView {
|
|
let previewConnection = AVCaptureConnection(inputPort: ports.first!, videoPreviewLayer: previewView.videoPreviewLayer)
|
|
if session.session.canAddConnection(previewConnection) {
|
|
session.session.addConnection(previewConnection)
|
|
self.previewConnection = previewConnection
|
|
} else {
|
|
Logger.shared.log("Camera", "Can't add preview connection")
|
|
}
|
|
}
|
|
|
|
let videoConnection = AVCaptureConnection(inputPorts: ports, output: self.videoOutput)
|
|
if session.session.canAddConnection(videoConnection) {
|
|
session.session.addConnection(videoConnection)
|
|
self.videoConnection = videoConnection
|
|
} else {
|
|
Logger.shared.log("Camera", "Can't add video connection")
|
|
}
|
|
|
|
if photo {
|
|
let photoConnection = AVCaptureConnection(inputPorts: ports, output: self.photoOutput)
|
|
if session.session.canAddConnection(photoConnection) {
|
|
session.session.addConnection(photoConnection)
|
|
self.photoConnection = photoConnection
|
|
}
|
|
}
|
|
} else {
|
|
Logger.shared.log("Camera", "Can't get video port")
|
|
}
|
|
}
|
|
}
|
|
|
|
func invalidate(for session: CameraSession) {
|
|
if #available(iOS 13.0, *) {
|
|
if let previewConnection = self.previewConnection {
|
|
if session.session.connections.contains(where: { $0 === previewConnection }) {
|
|
session.session.removeConnection(previewConnection)
|
|
}
|
|
self.previewConnection = nil
|
|
}
|
|
if let videoConnection = self.videoConnection {
|
|
if session.session.connections.contains(where: { $0 === videoConnection }) {
|
|
session.session.removeConnection(videoConnection)
|
|
}
|
|
self.videoConnection = nil
|
|
}
|
|
if let photoConnection = self.photoConnection {
|
|
if session.session.connections.contains(where: { $0 === photoConnection }) {
|
|
session.session.removeConnection(photoConnection)
|
|
}
|
|
self.photoConnection = nil
|
|
}
|
|
}
|
|
if session.session.outputs.contains(where: { $0 === self.videoOutput }) {
|
|
session.session.removeOutput(self.videoOutput)
|
|
}
|
|
if session.session.outputs.contains(where: { $0 === self.audioOutput }) {
|
|
session.session.removeOutput(self.audioOutput)
|
|
}
|
|
if session.session.outputs.contains(where: { $0 === self.photoOutput }) {
|
|
session.session.removeOutput(self.photoOutput)
|
|
}
|
|
if session.session.outputs.contains(where: { $0 === self.metadataOutput }) {
|
|
session.session.removeOutput(self.metadataOutput)
|
|
}
|
|
}
|
|
|
|
func configureVideoStabilization() {
|
|
if let videoDataOutputConnection = self.videoOutput.connection(with: .video) {
|
|
if videoDataOutputConnection.isVideoStabilizationSupported {
|
|
videoDataOutputConnection.preferredVideoStabilizationMode = .standard
|
|
// videoDataOutputConnection.preferredVideoStabilizationMode = self.isVideoMessage ? .cinematic : .standard
|
|
}
|
|
}
|
|
}
|
|
|
|
var isFlashActive: Signal<Bool, NoError> {
|
|
return Signal { [weak self] subscriber in
|
|
guard let self else {
|
|
return EmptyDisposable
|
|
}
|
|
subscriber.putNext(self.photoOutput.isFlashScene)
|
|
let observer = self.photoOutput.observe(\.isFlashScene, options: [.new], changeHandler: { device, _ in
|
|
subscriber.putNext(self.photoOutput.isFlashScene)
|
|
})
|
|
return ActionDisposable {
|
|
observer.invalidate()
|
|
}
|
|
}
|
|
|> distinctUntilChanged
|
|
}
|
|
|
|
func takePhoto(orientation: AVCaptureVideoOrientation, flashMode: AVCaptureDevice.FlashMode) -> Signal<PhotoCaptureResult, NoError> {
|
|
var mirror = false
|
|
if let connection = self.photoOutput.connection(with: .video) {
|
|
connection.videoOrientation = orientation
|
|
|
|
if #available(iOS 13.0, *) {
|
|
mirror = connection.inputPorts.first?.sourceDevicePosition == .front
|
|
}
|
|
}
|
|
|
|
let settings = AVCapturePhotoSettings(format: [kCVPixelBufferPixelFormatTypeKey as String: Int(kCVPixelFormatType_32BGRA)])
|
|
settings.flashMode = mirror ? .off : flashMode
|
|
if let previewPhotoPixelFormatType = settings.availablePreviewPhotoPixelFormatTypes.first {
|
|
settings.previewPhotoFormat = [kCVPixelBufferPixelFormatTypeKey as String: previewPhotoPixelFormatType]
|
|
}
|
|
if #available(iOS 13.0, *) {
|
|
if self.photoOutput.maxPhotoQualityPrioritization != .speed {
|
|
settings.photoQualityPrioritization = .balanced
|
|
} else {
|
|
settings.photoQualityPrioritization = .speed
|
|
}
|
|
}
|
|
|
|
let uniqueId = settings.uniqueID
|
|
let photoCapture = PhotoCaptureContext(ciContext: self.ciContext, settings: settings, orientation: orientation, mirror: mirror)
|
|
self.photoCaptureRequests[uniqueId] = photoCapture
|
|
self.photoOutput.capturePhoto(with: settings, delegate: photoCapture)
|
|
|
|
return photoCapture.signal
|
|
|> afterDisposed { [weak self] in
|
|
self?.photoCaptureRequests.removeValue(forKey: uniqueId)
|
|
}
|
|
}
|
|
|
|
var isRecording: Bool {
|
|
return self.videoRecorder != nil
|
|
}
|
|
|
|
enum RecorderMode {
|
|
case `default`
|
|
case roundVideo
|
|
case dualCamera
|
|
}
|
|
|
|
private var currentMode: RecorderMode = .default
|
|
private var recordingCompletionPipe = ValuePipe<VideoCaptureResult>()
|
|
func startRecording(mode: RecorderMode, position: Camera.Position? = nil, orientation: AVCaptureVideoOrientation, additionalOutput: CameraOutput? = nil) -> Signal<CameraRecordingData, NoError> {
|
|
guard self.videoRecorder == nil else {
|
|
return .complete()
|
|
}
|
|
|
|
self.currentMode = mode
|
|
self.lastSampleTimestamp = nil
|
|
|
|
let codecType: AVVideoCodecType
|
|
if case .roundVideo = mode {
|
|
codecType = .h264
|
|
} else {
|
|
if hasHEVCHardwareEncoder {
|
|
codecType = .hevc
|
|
} else {
|
|
codecType = .h264
|
|
}
|
|
}
|
|
|
|
guard var videoSettings = self.videoOutput.recommendedVideoSettings(forVideoCodecType: codecType, assetWriterOutputFileType: .mp4) else {
|
|
return .complete()
|
|
}
|
|
|
|
var dimensions: CGSize = CGSize(width: 1080, height: 1920)
|
|
if orientation == .landscapeLeft || orientation == .landscapeRight {
|
|
dimensions = CGSize(width: 1920, height: 1080)
|
|
}
|
|
var orientation = orientation
|
|
if case .roundVideo = mode {
|
|
videoSettings[AVVideoWidthKey] = 400
|
|
videoSettings[AVVideoHeightKey] = 400
|
|
dimensions = CGSize(width: 400, height: 400)
|
|
orientation = .landscapeRight
|
|
}
|
|
|
|
let audioSettings = self.audioOutput.recommendedAudioSettingsForAssetWriter(writingTo: .mp4) ?? [:]
|
|
|
|
let outputFileName = NSUUID().uuidString
|
|
let outputFilePath = NSTemporaryDirectory() + outputFileName + ".mp4"
|
|
let outputFileURL = URL(fileURLWithPath: outputFilePath)
|
|
|
|
let videoRecorder = VideoRecorder(
|
|
configuration: VideoRecorder.Configuration(videoSettings: videoSettings, audioSettings: audioSettings),
|
|
ciContext: self.ciContext,
|
|
orientation: orientation,
|
|
fileUrl: outputFileURL,
|
|
completion: { [weak self] result in
|
|
guard let self else {
|
|
return
|
|
}
|
|
if case let .success(transitionImage, duration, positionChangeTimestamps) = result {
|
|
self.recordingCompletionPipe.putNext(
|
|
.finished(
|
|
main: VideoCaptureResult.Result(
|
|
path: outputFilePath,
|
|
thumbnail: transitionImage ?? UIImage(),
|
|
isMirrored: false,
|
|
dimensions: dimensions
|
|
),
|
|
additional: nil,
|
|
duration: duration,
|
|
positionChangeTimestamps: positionChangeTimestamps.map { ($0 == .front, $1) },
|
|
captureTimestamp: CACurrentMediaTime()
|
|
)
|
|
)
|
|
} else {
|
|
self.recordingCompletionPipe.putNext(.failed)
|
|
}
|
|
}
|
|
)
|
|
|
|
videoRecorder?.start()
|
|
self.videoRecorder = videoRecorder
|
|
|
|
if case .dualCamera = mode, let position {
|
|
videoRecorder?.markPositionChange(position: position, time: .zero)
|
|
} else if case .roundVideo = mode {
|
|
additionalOutput?.masterOutput = self
|
|
}
|
|
|
|
return Signal { subscriber in
|
|
let timer = SwiftSignalKit.Timer(timeout: 0.033, repeat: true, completion: { [weak videoRecorder] in
|
|
let recordingData = CameraRecordingData(duration: videoRecorder?.duration ?? 0.0, filePath: outputFilePath)
|
|
subscriber.putNext(recordingData)
|
|
}, queue: Queue.mainQueue())
|
|
timer.start()
|
|
|
|
return ActionDisposable {
|
|
timer.invalidate()
|
|
}
|
|
}
|
|
}
|
|
|
|
func stopRecording() -> Signal<VideoCaptureResult, NoError> {
|
|
guard let videoRecorder = self.videoRecorder, videoRecorder.isRecording else {
|
|
return .complete()
|
|
}
|
|
videoRecorder.stop()
|
|
|
|
return self.recordingCompletionPipe.signal()
|
|
|> take(1)
|
|
|> afterDisposed {
|
|
self.videoRecorder = nil
|
|
}
|
|
}
|
|
|
|
var transitionImage: UIImage? {
|
|
return self.videoRecorder?.transitionImage
|
|
}
|
|
|
|
private weak var masterOutput: CameraOutput?
|
|
|
|
private var lastSampleTimestamp: CMTime?
|
|
func processVideoRecording(_ sampleBuffer: CMSampleBuffer, fromAdditionalOutput: Bool) {
|
|
guard let formatDescriptor = CMSampleBufferGetFormatDescription(sampleBuffer) else {
|
|
return
|
|
}
|
|
let type = CMFormatDescriptionGetMediaType(formatDescriptor)
|
|
|
|
if let videoRecorder = self.videoRecorder, videoRecorder.isRecording {
|
|
if case .roundVideo = self.currentMode, type == kCMMediaType_Video {
|
|
var transitionFactor: CGFloat = 0.0
|
|
let currentTimestamp = CACurrentMediaTime()
|
|
let duration: Double = 0.2
|
|
if case .front = self.currentPosition {
|
|
transitionFactor = 1.0
|
|
if self.lastSwitchTimestamp > 0.0, currentTimestamp - self.lastSwitchTimestamp < duration {
|
|
transitionFactor = max(0.0, (currentTimestamp - self.lastSwitchTimestamp) / duration)
|
|
}
|
|
} else {
|
|
transitionFactor = 0.0
|
|
if self.lastSwitchTimestamp > 0.0, currentTimestamp - self.lastSwitchTimestamp < duration {
|
|
transitionFactor = 1.0 - max(0.0, (currentTimestamp - self.lastSwitchTimestamp) / duration)
|
|
}
|
|
}
|
|
if let processedSampleBuffer = self.processRoundVideoSampleBuffer(sampleBuffer, additional: fromAdditionalOutput, transitionFactor: transitionFactor) {
|
|
let presentationTime = CMSampleBufferGetPresentationTimeStamp(processedSampleBuffer)
|
|
if let lastSampleTimestamp = self.lastSampleTimestamp, lastSampleTimestamp > presentationTime {
|
|
|
|
} else {
|
|
if (transitionFactor == 1.0 && fromAdditionalOutput) || (transitionFactor == 0.0 && !fromAdditionalOutput) || (transitionFactor > 0.0 && transitionFactor < 1.0) {
|
|
videoRecorder.appendSampleBuffer(processedSampleBuffer)
|
|
self.lastSampleTimestamp = presentationTime
|
|
}
|
|
}
|
|
} else {
|
|
videoRecorder.appendSampleBuffer(sampleBuffer)
|
|
}
|
|
} else {
|
|
videoRecorder.appendSampleBuffer(sampleBuffer)
|
|
}
|
|
}
|
|
}
|
|
|
|
private func processRoundVideoSampleBuffer(_ sampleBuffer: CMSampleBuffer, additional: Bool, transitionFactor: CGFloat) -> CMSampleBuffer? {
|
|
guard let videoPixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer), let formatDescription = CMSampleBufferGetFormatDescription(sampleBuffer) else {
|
|
return nil
|
|
}
|
|
self.semaphore.wait()
|
|
|
|
let mediaSubType = CMFormatDescriptionGetMediaSubType(formatDescription)
|
|
let extensions = CMFormatDescriptionGetExtensions(formatDescription) as! [String: Any]
|
|
|
|
var updatedExtensions = extensions
|
|
updatedExtensions["CVBytesPerRow"] = 400 * 4
|
|
|
|
var newFormatDescription: CMFormatDescription?
|
|
var status = CMVideoFormatDescriptionCreate(allocator: nil, codecType: mediaSubType, width: 400, height: 400, extensions: updatedExtensions as CFDictionary, formatDescriptionOut: &newFormatDescription)
|
|
guard status == noErr, let newFormatDescription else {
|
|
return nil
|
|
}
|
|
|
|
let filter: CameraRoundVideoFilter
|
|
if let current = self.roundVideoFilter {
|
|
filter = current
|
|
} else {
|
|
filter = CameraRoundVideoFilter(ciContext: self.ciContext)
|
|
self.roundVideoFilter = filter
|
|
}
|
|
if !filter.isPrepared {
|
|
filter.prepare(with: newFormatDescription, outputRetainedBufferCountHint: 3)
|
|
}
|
|
guard let newPixelBuffer = filter.render(pixelBuffer: videoPixelBuffer, additional: additional, transitionFactor: transitionFactor) else {
|
|
self.semaphore.signal()
|
|
return nil
|
|
}
|
|
|
|
var sampleTimingInfo: CMSampleTimingInfo = .invalid
|
|
CMSampleBufferGetSampleTimingInfo(sampleBuffer, at: 0, timingInfoOut: &sampleTimingInfo)
|
|
|
|
var newSampleBuffer: CMSampleBuffer?
|
|
status = CMSampleBufferCreateForImageBuffer(
|
|
allocator: kCFAllocatorDefault,
|
|
imageBuffer: newPixelBuffer,
|
|
dataReady: true,
|
|
makeDataReadyCallback: nil,
|
|
refcon: nil,
|
|
formatDescription: newFormatDescription,
|
|
sampleTiming: &sampleTimingInfo,
|
|
sampleBufferOut: &newSampleBuffer
|
|
)
|
|
|
|
if status == noErr, let newSampleBuffer {
|
|
self.semaphore.signal()
|
|
return newSampleBuffer
|
|
}
|
|
self.semaphore.signal()
|
|
return nil
|
|
}
|
|
|
|
private var currentPosition: Camera.Position = .front
|
|
private var lastSwitchTimestamp: Double = 0.0
|
|
|
|
func markPositionChange(position: Camera.Position) {
|
|
self.currentPosition = position
|
|
self.lastSwitchTimestamp = CACurrentMediaTime()
|
|
|
|
if let videoRecorder = self.videoRecorder {
|
|
videoRecorder.markPositionChange(position: position)
|
|
}
|
|
}
|
|
}
|
|
|
|
extension CameraOutput: AVCaptureVideoDataOutputSampleBufferDelegate, AVCaptureAudioDataOutputSampleBufferDelegate {
|
|
func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
|
|
guard CMSampleBufferDataIsReady(sampleBuffer) else {
|
|
return
|
|
}
|
|
|
|
if let videoPixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) {
|
|
self.processSampleBuffer?(sampleBuffer, videoPixelBuffer, connection)
|
|
} else {
|
|
// self.processAudioBuffer?(sampleBuffer)
|
|
}
|
|
|
|
if let masterOutput = self.masterOutput {
|
|
masterOutput.processVideoRecording(sampleBuffer, fromAdditionalOutput: true)
|
|
} else {
|
|
self.processVideoRecording(sampleBuffer, fromAdditionalOutput: false)
|
|
}
|
|
}
|
|
|
|
func captureOutput(_ output: AVCaptureOutput, didDrop sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
|
|
|
|
}
|
|
}
|
|
|
|
extension CameraOutput: AVCaptureMetadataOutputObjectsDelegate {
|
|
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
|
|
let codes: [CameraCode] = metadataObjects.filter { $0.type == .qr }.compactMap { object in
|
|
if let object = object as? AVMetadataMachineReadableCodeObject, let stringValue = object.stringValue, !stringValue.isEmpty {
|
|
#if targetEnvironment(simulator)
|
|
return CameraCode(type: .qr, message: stringValue, corners: [CGPoint(), CGPoint(), CGPoint(), CGPoint()])
|
|
#else
|
|
return CameraCode(type: .qr, message: stringValue, corners: object.corners)
|
|
#endif
|
|
} else {
|
|
return nil
|
|
}
|
|
}
|
|
self.processCodes?(codes)
|
|
}
|
|
}
|
|
|
|
private let hasHEVCHardwareEncoder: Bool = {
|
|
let spec: [CFString: Any] = [:]
|
|
var outID: CFString?
|
|
var properties: CFDictionary?
|
|
let result = VTCopySupportedPropertyDictionaryForEncoder(width: 1920, height: 1080, codecType: kCMVideoCodecType_HEVC, encoderSpecification: spec as CFDictionary, encoderIDOut: &outID, supportedPropertiesOut: &properties)
|
|
if result == kVTCouldNotFindVideoEncoderErr {
|
|
return false
|
|
}
|
|
return result == noErr
|
|
}()
|