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ViewController.swift
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//
// ViewController.swift
// SXModuleSample
//
// Created by 雪岑申 on 2019/11/23.
// Copyright © 2019 sxcc. All rights reserved.
//
import UIKit
import MetalKit
import SXModules
class ViewController: UIViewController {
var renderView: SXVideoRenderView!
var camera: SXCameraController!
var movieRecorder: SXMovieRecorder!
var recordCount = 0
override func viewDidLoad() {
super.viewDidLoad()
renderView = SXVideoRenderView(frame: view.frame, device: MTLCreateSystemDefaultDevice()!, libraryPath: nil, bufferSize: CGSize(width: 720, height: 1280))
view.addSubview(renderView)
camera = SXCameraController()
camera.setDataOutputWithSettings([kCVPixelBufferPixelFormatTypeKey: kCVPixelFormatType_32BGRA])
camera.switch(toDefaultDeviceOf: .front)
camera.setVideoDataOrientation(.portrait)
camera.setVideoMirror(false)
camera.addDataOutputDelegate(self)
let formats = camera.supportedDeviceFormatsForCurrentDevice()
let targetFormats = SXCameraUtil.videoDataFormats(fromCandidates: formats, satisfy: CGSize(width: 1280, height: 720), minFrameRate: 30, maxFrameRate: 30, supportDepthData: true)!
if targetFormats.count > 0 {
let targetFormat = targetFormats.first!
camera.setActiveDeviceFormat(targetFormat)
}
setupControls()
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
camera.startCapture()
}
func setupControls() {
var ptY = 100
// white balance
let temperatureLabel = UILabel(frame: CGRect(x: 12, y: ptY, width: 80, height: 80))
temperatureLabel.text = "Temp:"
view.addSubview(temperatureLabel)
let temperatureSlider = UISlider(frame: CGRect(x: 75, y: ptY, width: 300, height: 80));
temperatureSlider.minimumValue = 1000
temperatureSlider.maximumValue = 8000
temperatureSlider.tag = 101
temperatureSlider.addTarget(self, action: #selector(controlEventHandler(sender:)), for: .valueChanged)
view.addSubview(temperatureSlider)
ptY = ptY + 100
let tintLabel = UILabel(frame: CGRect(x: 12, y: ptY, width: 80, height: 80))
tintLabel.text = "Tint:"
view.addSubview(tintLabel)
let tintSlider = UISlider(frame: CGRect(x: 75, y: ptY, width: 300, height: 80));
tintSlider.minimumValue = -150
tintSlider.maximumValue = 150
tintSlider.tag = 102
tintSlider.addTarget(self, action: #selector(controlEventHandler(sender:)), for: .valueChanged)
view.addSubview(tintSlider)
// set default values
let gains = self.camera.currentDeviceWhiteBalanceGains()
let tempAndTint = self.camera.temperatureAndTintValues(forDeviceWhiteBalanceGains: gains)
temperatureSlider.value = tempAndTint.temperature
tintSlider.value = tempAndTint.tint
// zoom
ptY = ptY + 100
let zoomLabel = UILabel(frame: CGRect(x: 12, y: ptY, width: 80, height: 80))
zoomLabel.text = "Zoom:"
view.addSubview(zoomLabel)
let zoomSlider = UISlider(frame: CGRect(x: 75, y: ptY, width: 300, height: 80))
zoomSlider.minimumValue = Float(self.camera.miniumZoomFactor())
zoomSlider.maximumValue = Float(self.camera.maxiumZoomFactor())
zoomSlider.value = Float(self.camera.currentZoomFactor())
zoomSlider.tag = 103
zoomSlider.addTarget(self, action: #selector(controlEventHandler(sender:)), for: .valueChanged)
view.addSubview(zoomSlider)
// movie record
ptY = ptY + 100
let recordBtn = UIButton(frame: CGRect(x: 12, y: ptY, width: 100, height: 80))
recordBtn.layer.borderWidth = 1.0
recordBtn.setTitle("start", for: .normal)
recordBtn.addTarget(self, action: #selector(controlEventHandler(sender:)), for: .touchUpInside)
recordBtn.tag = 104
view.addSubview(recordBtn)
}
@objc
func controlEventHandler(sender: UIControl) {
if sender.tag == 101 || sender.tag == 102 {
if !self.camera.supportsLockWhiteBalanceToCustomValue() {
return
}
let tempSlider = view.viewWithTag(101) as! UISlider
let tintSlider = view.viewWithTag(102) as! UISlider
let newVal = AVCaptureDevice.WhiteBalanceTemperatureAndTintValues(temperature: tempSlider.value, tint: tintSlider.value)
var gains = self.camera.deviceWhiteBalanceGains(for: newVal)
gains.blueGain = min(gains.blueGain, self.camera.maxiumWhiteBalanceGains())
gains.redGain = min(gains.redGain, self.camera.maxiumWhiteBalanceGains())
gains.greenGain = min(gains.greenGain, self.camera.maxiumWhiteBalanceGains())
self.camera.setWhiteBalanceModeLockedWithDeviceWhiteBalanceGains(gains) { (_) in
}
} else if sender.tag == 103 {
self.camera.setZoomFactor(CGFloat((sender as! UISlider).value))
} else if sender.tag == 104 {
if (sender as! UIButton).titleLabel?.text == "start" {
self.startRecord()
(sender as! UIButton).setTitle("end", for: .normal)
} else {
(sender as! UIButton).setTitle("start", for: .normal)
self.finishRecord {
print("Record Finished")
}
}
}
}
}
extension ViewController: SXCameraControllerDataDelegate {
func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
let pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)!
renderView.draw(pixelBuffer, cleanBuffer: true)
if (view.viewWithTag(104) as! UIButton).titleLabel?.text == "end" {
let recordBuffer = self.self.movieRecorder.generatePixelBuffer()!.takeRetainedValue()
renderView.render(to: recordBuffer)
if self.movieRecorder.append(recordBuffer) {
recordCount = recordCount + 1
}
}
renderView.drawNormalizedBox([CGPoint(x: 0.3, y: 0.3), CGPoint(x: 0.6, y: 0.3), CGPoint(x: 0.6, y: 0.6), CGPoint(x: 0.3, y: 0.6)])
renderView.renderToScreen()
}
func createPixelBuffer() -> CVPixelBuffer {
var buffer: CVPixelBuffer? = nil
CVPixelBufferCreate(kCFAllocatorDefault, 720, 1280, kCVPixelFormatType_32BGRA, [kCVPixelBufferMetalCompatibilityKey: true] as CFDictionary
, &buffer)
return buffer!
}
}
extension ViewController {
func startRecord() {
let filePath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first! + "/video.mov"
do { try FileManager.default.removeItem(atPath: filePath) } catch {} // remove file if already exists
movieRecorder = SXMovieRecorder(path: filePath, fileType: .mov, videoSize: CGSize(width: 720, height: 1280), frameRate: 30, bitRate: 3500000)
self.movieRecorder.startWriting()
}
func finishRecord(handler:@escaping ()->()) {
self.movieRecorder.finishWriting(handler)
}
}