import CoreMedia import Foundation import Logging #if !os(macOS) import Siesta import UIKit #endif final class MPVClient: ObservableObject { private var logger = Logger(label: "mpv-client") var mpv: OpaquePointer! var mpvGL: OpaquePointer! var queue: DispatchQueue! #if os(macOS) var layer: VideoLayer! var link: CVDisplayLink! #else var glView: MPVOGLView! #endif var backend: MPVBackend! var seeking = false func create(frame: CGRect? = nil) { #if !os(macOS) if let frame = frame { glView = MPVOGLView(frame: frame) } #endif mpv = mpv_create() if mpv == nil { print("failed creating context\n") exit(1) } #if DEBUG checkError(mpv_request_log_messages(mpv, "debug")) #else checkError(mpv_request_log_messages(mpv, "warn")) #endif #if os(macOS) checkError(mpv_set_option_string(mpv, "input-media-keys", "yes")) #endif checkError(mpv_set_option_string(mpv, "cache-pause-initial", "yes")) checkError(mpv_set_option_string(mpv, "cache-secs", "20")) checkError(mpv_set_option_string(mpv, "cache-pause-wait", "2")) checkError(mpv_set_option_string(mpv, "keep-open", "yes")) checkError(mpv_set_option_string(mpv, "hwdec", "auto-safe")) checkError(mpv_set_option_string(mpv, "vo", "libmpv")) checkError(mpv_initialize(mpv)) let api = UnsafeMutableRawPointer(mutating: (MPV_RENDER_API_TYPE_OPENGL as NSString).utf8String) var initParams = mpv_opengl_init_params( get_proc_address: getProcAddress, get_proc_address_ctx: nil, extra_exts: nil ) queue = DispatchQueue(label: "mpv", qos: .userInteractive) withUnsafeMutablePointer(to: &initParams) { initParams in var params = [ mpv_render_param(type: MPV_RENDER_PARAM_API_TYPE, data: api), mpv_render_param(type: MPV_RENDER_PARAM_OPENGL_INIT_PARAMS, data: initParams), mpv_render_param() ] if mpv_render_context_create(&mpvGL, mpv, ¶ms) < 0 { puts("failed to initialize mpv GL context") exit(1) } #if os(macOS) mpv_render_context_set_update_callback( mpvGL, glUpdate, UnsafeMutableRawPointer(Unmanaged.passUnretained(layer).toOpaque()) ) #else glView.mpvGL = UnsafeMutableRawPointer(mpvGL) mpv_render_context_set_update_callback( mpvGL, glUpdate(_:), UnsafeMutableRawPointer(Unmanaged.passUnretained(glView).toOpaque()) ) #endif } queue!.async { mpv_set_wakeup_callback(self.mpv, wakeUp, UnsafeMutableRawPointer(Unmanaged.passUnretained(self).toOpaque())) } } func readEvents() { queue?.async { [self] in while self.mpv != nil { let event = mpv_wait_event(self.mpv, 0) if event!.pointee.event_id == MPV_EVENT_NONE { break } backend.handle(event) } } } func loadFile(_ url: URL, audio: URL? = nil, time: CMTime? = nil, completionHandler: ((Int32) -> Void)? = nil) { var args = [url.absoluteString] var options = [String]() if let time = time { args.append("replace") options.append("start=\(Int(time.seconds))") } if let audioURL = audio?.absoluteString { options.append("audio-files-append=\"\(audioURL)\"") } args.append(options.joined(separator: ",")) command("loadfile", args: args, returnValueCallback: completionHandler) } func play() { setFlagAsync("pause", false) } func pause() { setFlagAsync("pause", true) } func togglePlay() { command("cycle", args: ["pause"]) } func stop() { command("stop") } var currentTime: CMTime { CMTime.secondsInDefaultTimescale(mpv.isNil ? -1 : getDouble("time-pos")) } var frameDropCount: Int { mpv.isNil ? 0 : getInt("frame-drop-count") } var outputFps: Double { mpv.isNil ? 0.0 : getDouble("estimated-vf-fps") } var hwDecoder: String { mpv.isNil ? "unknown" : (getString("hwdec-current") ?? "unknown") } var bufferingState: Double { mpv.isNil ? 0.0 : getDouble("cache-buffering-state") } var cacheDuration: Double { mpv.isNil ? 0.0 : getDouble("demuxer-cache-duration") } var duration: CMTime { CMTime.secondsInDefaultTimescale(mpv.isNil ? -1 : getDouble("duration")) } var pausedForCache: Bool { mpv.isNil ? false : getFlag("paused-for-cache") } func seek(relative time: CMTime, completionHandler: ((Bool) -> Void)? = nil) { guard !seeking else { logger.warning("ignoring seek, another in progress") return } seeking = true command("seek", args: [String(time.seconds)]) { [weak self] _ in self?.seeking = false completionHandler?(true) } } func seek(to time: CMTime, completionHandler: ((Bool) -> Void)? = nil) { guard !seeking else { logger.warning("ignoring seek, another in progress") return } seeking = true command("seek", args: [String(time.seconds), "absolute"]) { [weak self] _ in self?.seeking = false completionHandler?(true) } } func setSize(_ width: Double, _ height: Double) { let roundedWidth = width.rounded() let roundedHeight = height.rounded() guard width > 0, height > 0 else { return } logger.info("setting player size to \(roundedWidth),\(roundedHeight)") #if !os(macOS) guard roundedWidth <= UIScreen.main.bounds.width, roundedHeight <= UIScreen.main.bounds.height else { logger.info("requested size is greater than screen size, ignoring") logger.info("width: \(roundedWidth) <= \(UIScreen.main.bounds.width)") logger.info("height: \(roundedHeight) <= \(UIScreen.main.bounds.height)") return } glView?.frame = CGRect(x: 0, y: 0, width: roundedWidth, height: roundedHeight) #endif } func setNeedsDrawing(_ needsDrawing: Bool) { logger.info("needs drawing: \(needsDrawing)") #if !os(macOS) glView.needsDrawing = needsDrawing #endif } func command( _ command: String, args: [String?] = [], checkForErrors: Bool = true, returnValueCallback: ((Int32) -> Void)? = nil ) { guard mpv != nil else { return } var cargs = makeCArgs(command, args).map { $0.flatMap { UnsafePointer(strdup($0)) } } defer { for ptr in cargs where ptr != nil { free(UnsafeMutablePointer(mutating: ptr!)) } } logger.info("\(command) -- \(args)") let returnValue = mpv_command(mpv, &cargs) if checkForErrors { checkError(returnValue) } if let cb = returnValueCallback { cb(returnValue) } } func addVideoTrack(_ url: URL) { command("video-add", args: [url.absoluteString]) } func setVideoToAuto() { setString("video", "1") } func setVideoToNo() { setString("video", "no") } var tracksCount: Int { Int(getString("track-list/count") ?? "-1") ?? -1 } private func getFlag(_ name: String) -> Bool { var data = Int64() mpv_get_property(mpv, name, MPV_FORMAT_FLAG, &data) return data > 0 } private func setFlagAsync(_ name: String, _ flag: Bool) { var data: Int = flag ? 1 : 0 mpv_set_property_async(mpv, 0, name, MPV_FORMAT_FLAG, &data) } func setDoubleAsync(_ name: String, _ value: Double) { var data = value mpv_set_property_async(mpv, 0, name, MPV_FORMAT_DOUBLE, &data) } private func getDouble(_ name: String) -> Double { var data = Double() mpv_get_property(mpv, name, MPV_FORMAT_DOUBLE, &data) return data } private func getInt(_ name: String) -> Int { var data = Int64() mpv_get_property(mpv, name, MPV_FORMAT_INT64, &data) return Int(data) } func getString(_ name: String) -> String? { let cstr = mpv_get_property_string(mpv, name) let str: String? = cstr == nil ? nil : String(cString: cstr!) mpv_free(cstr) return str } private func setString(_ name: String, _ value: String) { mpv_set_property_string(mpv, name, value) } private func makeCArgs(_ command: String, _ args: [String?]) -> [String?] { if !args.isEmpty, args.last == nil { fatalError("Command do not need a nil suffix") } var strArgs = args strArgs.insert(command, at: 0) strArgs.append(nil) return strArgs } func checkError(_ status: CInt) { if status < 0 { logger.error(.init(stringLiteral: "MPV API error: \(String(cString: mpv_error_string(status)))\n")) } } } #if os(macOS) func getProcAddress(_: UnsafeMutableRawPointer?, _ name: UnsafePointer?) -> UnsafeMutableRawPointer? { let symbolName = CFStringCreateWithCString(kCFAllocatorDefault, name, CFStringBuiltInEncodings.ASCII.rawValue) let identifier = CFBundleGetBundleWithIdentifier("com.apple.opengl" as CFString) return CFBundleGetFunctionPointerForName(identifier, symbolName) } func glUpdate(_ ctx: UnsafeMutableRawPointer?) { let videoLayer = unsafeBitCast(ctx, to: VideoLayer.self) videoLayer.client?.queue?.async { if !videoLayer.isAsynchronous { videoLayer.display() } } } #else func getProcAddress(_: UnsafeMutableRawPointer?, _ name: UnsafePointer?) -> UnsafeMutableRawPointer? { let symbolName = CFStringCreateWithCString(kCFAllocatorDefault, name, CFStringBuiltInEncodings.ASCII.rawValue) let identifier = CFBundleGetBundleWithIdentifier("com.apple.opengles" as CFString) return CFBundleGetFunctionPointerForName(identifier, symbolName) } private func glUpdate(_ ctx: UnsafeMutableRawPointer?) { #if targetEnvironment(simulator) // performance of drawing in simulator is poor and buggy, disable it return #endif let glView = unsafeBitCast(ctx, to: MPVOGLView.self) guard glView.needsDrawing else { return } glView.queue.async { glView.display() } } #endif private func wakeUp(_ context: UnsafeMutableRawPointer?) { let client = unsafeBitCast(context, to: MPVClient.self) client.readEvents() }