add Chapter

Sources/KSPlayer/AVPlayer/KSAVPlayer.swift

@@ -126,6 +126,7 @@ public class KSAVPlayer {
     public private(set) var duration: TimeInterval = 0
     public private(set) var fileSize: Double = 0
     public private(set) var playableTime: TimeInterval = 0
+    public let chapters: [Chapter] = []
     public var playbackRate: Float = 1 {
         didSet {
             if playbackState == .playing {

Sources/KSPlayer/AVPlayer/KSOptions.swift

@@ -454,6 +454,7 @@ public extension KSOptions {
     /// seek完是否自动播放
     static var isSeekedAutoPlay = true
     static var hardwareDecode = true
+    // 默认不用自研的硬解，因为有些视频的AVPacket的pts顺序是不对的，只有解码后的AVFrame里面的pts是对的。
     static var asynchronousDecompression = false
     static var isPipPopViewController = false
     static var displayCriteriaFormatDescriptionEnabled = false

Sources/KSPlayer/AVPlayer/MediaPlayerProtocol.swift

@@ -17,6 +17,7 @@ public protocol MediaPlayback: AnyObject {
     var duration: TimeInterval { get }
     var fileSize: Double { get }
     var naturalSize: CGSize { get }
+    var chapters: [Chapter] { get }
     var currentPlaybackTime: TimeInterval { get }
     func prepareToPlay()
     func shutdown()
@@ -57,6 +58,12 @@ public class DynamicInfo: ObservableObject {
     }
 }
 
+public struct Chapter {
+    public let start: TimeInterval
+    public let end: TimeInterval
+    public let title: String
+}
+
 public protocol MediaPlayerProtocol: MediaPlayback {
     var delegate: MediaPlayerDelegate? { get set }
     var view: UIView? { get }

Sources/KSPlayer/MEPlayer/KSMEPlayer.swift

@@ -283,6 +283,10 @@ extension KSMEPlayer: MEPlayerDelegate {
 }
 
 extension KSMEPlayer: MediaPlayerProtocol {
+    public var chapters: [Chapter] {
+        playerItem.chapters
+    }
+
     public var subtitleDataSouce: SubtitleDataSouce? { self }
     public var playbackVolume: Float {
         get {

Sources/KSPlayer/MEPlayer/MEPlayerItem.swift

@@ -41,6 +41,7 @@ final class MEPlayerItem {
     private var videoDisplayCount = UInt8(0)
     private var seekByBytes = false
     private var lastVideoDisplayTime = CACurrentMediaTime()
+    public private(set) var chapters: [Chapter] = []
     var currentPlaybackTime: TimeInterval {
         state == .seeking ? seekTime : (mainClock().time - startTime).seconds
     }
@@ -81,6 +82,7 @@ final class MEPlayerItem {
     }
 
     lazy var dynamicInfo = DynamicInfo { [weak self] in
+        // metadata可能会实时变化。所以把它放在DynamicInfo里面
         toDictionary(self?.formatCtx?.pointee.metadata)
     } bytesRead: { [weak self] in
         self?.formatCtx?.pointee.pb?.pointee.bytes_read ?? 0
@@ -258,6 +260,20 @@ extension MEPlayerItem {
         duration = TimeInterval(max(formatCtx.pointee.duration, 0) / Int64(AV_TIME_BASE))
         fileSize = Double(formatCtx.pointee.bit_rate) * duration / 8
         createCodec(formatCtx: formatCtx)
+        if formatCtx.pointee.nb_chapters > 0 {
+            chapters.removeAll()
+            for i in 0 ..< formatCtx.pointee.nb_chapters {
+                if let chapter = formatCtx.pointee.chapters[Int(i)]?.pointee {
+                    let timeBase = Timebase(chapter.time_base)
+                    let start = timeBase.cmtime(for: chapter.start).seconds
+                    let end = timeBase.cmtime(for: chapter.end).seconds
+                    let metadata = toDictionary(chapter.metadata)
+                    let title = metadata["title"] ?? ""
+                    chapters.append(Chapter(start: start, end: end, title: title))
+                }
+            }
+        }
+
         if let outputURL = options.outputURL {
             openOutput(url: outputURL)
         }