swiftlint

Examples/iOS/LiveViewController.swift

@@ -173,15 +173,15 @@ final class LiveViewController: UIViewController {
 
     @IBAction func onEffectValueChanged(_ segment: UISegmentedControl) {
         if let currentEffect: VisualEffect = currentEffect {
-            let _ = rtmpStream.unregisterEffect(video: currentEffect)
+            _ = rtmpStream.unregisterEffect(video: currentEffect)
         }
         switch segment.selectedSegmentIndex {
         case 1:
             currentEffect = MonochromeEffect()
-            let _ = rtmpStream.registerEffect(video: currentEffect!)
+            _ = rtmpStream.registerEffect(video: currentEffect!)
         case 2:
             currentEffect = PronamaEffect()
-            let _ = rtmpStream.registerEffect(video: currentEffect!)
+            _ = rtmpStream.registerEffect(video: currentEffect!)
         default:
             break
         }

Examples/iOS/Preference.swift

@@ -1,4 +1,3 @@
-
 struct Preference {
     static var defaultInstance: Preference = Preference()
 

Platforms/macOS/VideoIOComponent+Extension.swift

@@ -5,7 +5,7 @@ extension VideoIOComponent {
     func attachScreen(_ screen: AVCaptureScreenInput?) {
         mixer?.session.beginConfiguration()
         output = nil
-        guard let _  = screen else {
+        guard screen != nil else {
             input = nil
             return
         }

Sources/Core/Protocol.swift

@@ -1,4 +1,3 @@
-
 protocol DataConvertible {
     var data: Data { get set }
 }

Sources/FLV/FLVAACPacket.swift

@@ -1,4 +1,3 @@
-
 public enum FLVAACPacketType: UInt8 {
     case seq = 0
     case raw = 1

Sources/FLV/FLVAVCPacketType.swift

@@ -1,4 +1,3 @@
-
 public enum FLVAVCPacketType: UInt8 {
     case seq = 0
     case nal = 1

Sources/FLV/FLVFrameType.swift

@@ -1,4 +1,3 @@
-
 public enum FLVFrameType: UInt8 {
     case key        = 1
     case inter      = 2

Sources/FLV/FLVTagType.swift

@@ -1,4 +1,3 @@
-
 public enum FLVTagType: UInt8 {
     case audio = 8
     case video = 9

Sources/ISO/MP4Reader.swift

@@ -398,7 +398,7 @@ final class MP4VisualSampleEntryBox: MP4ContainerBox {
         frameCount = try buffer.readUInt16()
         compressorname = try buffer.readUTF8Bytes(32)
         depth = try buffer.readUInt16()
-        let _ = try buffer.readUInt16()
+        _ = try buffer.readUInt16()
         buffer.clear()
 
         var offset: UInt32 = UInt32(MP4VisualSampleEntryBox.dataSize)

Sources/ISO/MP4Sampler.swift

@@ -31,7 +31,7 @@ public class MP4Sampler {
         let reader: MP4Reader = MP4Reader(url: url)
 
         do {
-            let _ = try reader.load()
+            _ = try reader.load()
         } catch {
             logger.warn("")
             return

Sources/ISO/TSReader.swift

@@ -66,7 +66,7 @@ class TSReader {
             packetizedElementaryStreams[packet.PID] = PacketizedElementaryStream(packet.payload)
             return
         }
-        let _ = packetizedElementaryStreams[packet.PID]?.append(packet.payload)
+        _ = packetizedElementaryStreams[packet.PID]?.append(packet.payload)
     }
 
     func close() {

Sources/ISO/TSWriter.swift

@@ -76,7 +76,7 @@ class TSWriter {
         }
 
         var packets: [TSPacket] = split(PID, PES: PES, timestamp: decodeTimeStamp)
-        let _ = rotateFileHandle(decodeTimeStamp)
+        _ = rotateFileHandle(decodeTimeStamp)
 
         if streamID == 192 {
             packets[0].adaptationField?.randomAccessIndicator = true

Sources/Media/AVMixer.swift

@@ -1,7 +1,6 @@
 import Foundation
 import AVFoundation
 
-
 #if os(iOS) || os(macOS)
     extension AVCaptureSession.Preset {
         static var `default`: AVCaptureSession.Preset = .medium

Sources/Media/AVMixerRecorder.swift

@@ -173,7 +173,7 @@ extension DefaultAVMixerRecorderDelegate: AVMixerRecorderDelegate {
         guard clockReference == mediaType && rotateTime.value < withPresentationTimeStamp.value else {
             return
         }
-        if let _ = recorder.writer {
+        if recorder.writer != nil {
             recorder.finishWriting()
         }
         recorder.writer = createWriter(recorder.fileName)

Sources/Media/AudioStreamPlayback.swift

@@ -168,7 +168,7 @@ class AudioStreamPlayback {
     }
 
     func initializeForAudioQueue() {
-        guard let _ = formatDescription, self.queue == nil else {
+        guard formatDescription != nil && self.queue == nil else {
             return
         }
         var queue: AudioQueueRef? = nil
@@ -184,7 +184,7 @@ class AudioStreamPlayback {
                 &queue)
         }
         if let cookie: [UInt8] = getMagicCookieForFileStream() {
-            let _ = setMagicCookieForQueue(cookie)
+            _ = setMagicCookieForQueue(cookie)
         }
         soundTransform.setParameter(queue!)
         for _ in 0..<numberOfBuffers {

Sources/Media/ScalingMode.swift

@@ -1,4 +1,3 @@
-
 public enum ScalingMode: String {
     case normal = "Normal"
     case letterbox = "Letterbox"

Sources/Media/VideoIOComponent.swift

@@ -333,7 +333,7 @@ final class VideoIOComponent: IOComponent {
         defer {
             objc_sync_exit(effects)
         }
-        if let _ = effects.index(of: effect) {
+        if effects.contains(effect) {
             return false
         }
         effects.append(effect)

Sources/RTMP/ASClass.swift

@@ -84,7 +84,6 @@ extension ASArray: Equatable {
     }
 }
 
-
 // MARK: -
 /**
  ActionScript 1.0 and 2.0 and flash.xml.XMLDocument in ActionScript 3.0

Sources/RTMP/RTMPMessage.swift

@@ -349,7 +349,7 @@ final class RTMPCommandMessage: RTMPMessage {
             case "close":
                 connection.close()
             default:
-                connection.dispatch(Event.RTMP_STATUS, bubbles: false, data: arguments.first)
+                connection.dispatch(Event.RTMP_STATUS, bubbles: false, data: arguments.first ?? nil)
             }
             return
         }

Sources/RTMP/RTMPStreamQoSDelagate.swift

@@ -1,4 +1,3 @@
-
 public protocol RTMPStreamQoSDelegate: class {
     func didPublishInsufficientBW(_ stream: RTMPStream, withConnection: RTMPConnection)
     func clear()

Sources/RTMP/RTMPTSocket.swift

@@ -271,8 +271,7 @@ final class RTMPTSocket: NSObject, RTMPSocketCompatible {
         return data.count
     }
 
-    private func doRequest(_ pathComponent: String, _
-data: Data, _ completionHandler: @escaping ((Data?, URLResponse?, Error?) -> Void)) {
+    private func doRequest(_ pathComponent: String, _ data: Data, _ completionHandler: @escaping ((Data?, URLResponse?, Error?) -> Void)) {
         isRequesting = true
         lastRequestPathComponent = pathComponent
         lastRequestData = data

Sources/Util/DeviceUtil.swift

@@ -11,7 +11,6 @@ extension AVFrameRateRange {
     }
 }
 
-
 #if os(iOS) || os(macOS)
 
 extension AVCaptureDevice {

Sources/Util/TimerDriver.swift

@@ -54,7 +54,7 @@ extension TimerDriver: Running {
 
     final public func startRunning() {
         DispatchQueue.global(qos: .userInteractive).async {
-            if let _ = self.runloop {
+            guard self.runloop != nil else {
                 return
             }
             self.timer = Timer(