зеркало из https://github.com/xamarin/ios-samples.git
[StreamingAudio] Add PlayerViewController instead of using playerController outlet in AppDelegate.cs
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olegoid
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Коммит
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using System;
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using System.Drawing;
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using MonoTouch.Foundation;
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using MonoTouch.UIKit;
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using System.Net;
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using MonoTouch.AudioToolbox;
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using System.IO;
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using System.Threading;
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using System.Diagnostics;
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namespace StreamingAudio
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{
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public partial class PlayerViewController : UIViewController
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{
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private NSTimer updatingTimer;
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private StreamingPlayback player;
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public Action<string> ErrorOccurred;
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public string SourceUrl { get; private set; }
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public PlayerOption PlayerOption { get; private set; }
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public bool IsPlaying { get; private set; }
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public PlayerViewController (PlayerOption playerOption, string sourceUrl) : base ("PlayerViewController", null)
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{
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PlayerOption = playerOption;
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SourceUrl = sourceUrl;
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}
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public override void ViewDidLoad ()
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{
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base.ViewDidLoad ();
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this.View = View;
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volumeSlider.TouchUpInside += SetVolume;
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playPauseButton.TouchUpInside += PlayPauseButtonClickHandler;
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}
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private void SetVolume (object sender, EventArgs e)
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{
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if (player == null)
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return;
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player.Volume = volumeSlider.Value;
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}
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public override void ViewWillAppear (bool animated)
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{
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base.ViewWillAppear (animated);
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Title = PlayerOption == PlayerOption.Stream ? "Stream " : "Stream & Save";
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playPauseButton.TitleLabel.Text = "Pause";
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timeLabel.Text = string.Empty;
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AudioSession.Initialize ();
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StartPlayback ();
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IsPlaying = true;
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}
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public override void ViewDidDisappear (bool animated)
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{
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base.ViewDidDisappear (animated);
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if (player != null)
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player.Pause ();
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}
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private void PlayPauseButtonClickHandler (object sender, EventArgs e)
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{
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if (player == null)
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return;
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if (IsPlaying)
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player.Pause ();
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else
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player.Play ();
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var title = IsPlaying ? "Play" : "Pause";
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playPauseButton.SetTitle (title, UIControlState.Normal);
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playPauseButton.SetTitle (title, UIControlState.Selected);
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IsPlaying = !IsPlaying;
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}
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private void StartPlayback ()
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{
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PreparePlayback ();
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try {
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var request = (HttpWebRequest)WebRequest.Create (SourceUrl);
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request.BeginGetResponse (StreamDownloadedHandler, request);
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} catch (Exception e) {
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string.Format ("Error: {0}", e.ToString ());
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}
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}
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private void RaiseErrorOccurredEvent (string message)
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{
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if (ErrorOccurred != null)
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ErrorOccurred (message);
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}
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private void PreparePlayback ()
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{
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//The following line prevents the audio from stopping when the device autolocks
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AudioSession.Category = AudioSessionCategory.MediaPlayback;
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AudioSession.RoutingOverride = AudioSessionRoutingOverride.Speaker;
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}
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private void StreamDownloadedHandler (IAsyncResult result)
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{
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var buffer = new byte [8192];
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int l = 0;
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int inputStreamLength;
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double sampleRate = 0;
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Stream inputStream;
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AudioQueueTimeline timeline = null;
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var request = result.AsyncState as HttpWebRequest;
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try {
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var response = request.EndGetResponse (result);
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var responseStream = response.GetResponseStream ();
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if (PlayerOption == PlayerOption.StreamAndSave)
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inputStream = GetQueueStream (responseStream);
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else
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inputStream = responseStream;
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using (player = new StreamingPlayback ()) {
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player.OutputReady += delegate {
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timeline = player.OutputQueue.CreateTimeline ();
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sampleRate = player.OutputQueue.SampleRate;
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};
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InvokeOnMainThread (delegate {
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if (updatingTimer != null)
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updatingTimer.Invalidate ();
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updatingTimer = NSTimer.CreateRepeatingScheduledTimer (0.5, () => RepeatingAction (timeline, sampleRate));
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});
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while ((inputStreamLength = inputStream.Read (buffer, 0, buffer.Length)) != 0) {
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l += inputStreamLength;
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player.ParseBytes (buffer, inputStreamLength, false, l == (int)response.ContentLength);
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InvokeOnMainThread (delegate {
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progressBar.Progress = l / (float)response.ContentLength;
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});
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}
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}
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} catch (Exception e) {
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RaiseErrorOccurredEvent ("Error fetching response stream\n" + e);
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Debug.WriteLine (e);
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InvokeOnMainThread (delegate {
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if (NavigationController != null)
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NavigationController.PopToRootViewController (true);
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});
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}
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}
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private void RepeatingAction (AudioQueueTimeline timeline, double sampleRate)
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{
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var queue = player.OutputQueue;
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if (queue == null || timeline == null)
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return;
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bool disc = false;
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var time = new AudioTimeStamp ();
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queue.GetCurrentTime (timeline, ref time, ref disc);
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playbackTime.Text = FormatTime (time.SampleTime / sampleRate);
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}
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private string FormatTime (double time)
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{
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double minutes = time / 60;
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double seconds = time % 60;
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return String.Format ("{0}:{1:D2}", (int)minutes, (int)seconds);
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}
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private Stream GetQueueStream (Stream responseStream)
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{
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var queueStream = new QueueStream (Environment.GetFolderPath (Environment.SpecialFolder.Personal) + "copy.mp3");
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var t = new Thread ((x) => {
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var tbuf = new byte [8192];
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int count;
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while ((count = responseStream.Read (tbuf, 0, tbuf.Length)) != 0)
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queueStream.Push (tbuf, 0, count);
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});
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t.Start ();
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return queueStream;
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}
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}
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}
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@ -0,0 +1,58 @@
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// WARNING
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//
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// This file has been generated automatically by Xamarin Studio to store outlets and
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// actions made in the UI designer. If it is removed, they will be lost.
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// Manual changes to this file may not be handled correctly.
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//
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using MonoTouch.Foundation;
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using System.CodeDom.Compiler;
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namespace StreamingAudio
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{
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[Register ("PlayerViewController")]
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partial class PlayerViewController
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{
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[Outlet]
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MonoTouch.UIKit.UILabel playbackTime { get; set; }
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[Outlet]
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MonoTouch.UIKit.UIButton playPauseButton { get; set; }
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[Outlet]
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MonoTouch.UIKit.UIProgressView progressBar { get; set; }
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[Outlet]
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MonoTouch.UIKit.UILabel timeLabel { get; set; }
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[Outlet]
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MonoTouch.UIKit.UISlider volumeSlider { get; set; }
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void ReleaseDesignerOutlets ()
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{
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if (playPauseButton != null) {
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playPauseButton.Dispose ();
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playPauseButton = null;
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}
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if (progressBar != null) {
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progressBar.Dispose ();
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progressBar = null;
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}
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if (timeLabel != null) {
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timeLabel.Dispose ();
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timeLabel = null;
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}
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if (volumeSlider != null) {
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volumeSlider.Dispose ();
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volumeSlider = null;
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}
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if (playbackTime != null) {
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playbackTime.Dispose ();
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playbackTime = null;
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}
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}
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}
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}
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@ -0,0 +1,77 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="4514" systemVersion="13B42" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none">
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<dependencies>
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<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="3747"/>
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</dependencies>
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<objects>
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<placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="PlayerViewController">
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<connections>
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<outlet property="playPauseButton" destination="SP7-sW-LfZ" id="McA-Ba-V84"/>
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<outlet property="playbackTime" destination="C0l-Uf-RPu" id="Vmp-f6-0bR"/>
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<outlet property="progressBar" destination="wG9-jD-zWY" id="LLd-y6-2Hr"/>
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<outlet property="timeLabel" destination="C0l-Uf-RPu" id="Rg0-f5-qgw"/>
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<outlet property="view" destination="3Mt-jV-nDm" id="2EV-Wk-Xji"/>
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<outlet property="volumeSlider" destination="Ka9-Cy-B6c" id="LVw-eX-fdw"/>
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</connections>
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</placeholder>
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<placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
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<view clearsContextBeforeDrawing="NO" contentMode="scaleToFill" id="3Mt-jV-nDm">
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<rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
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<subviews>
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<slider opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" value="1" minValue="0.0" maxValue="1" id="Ka9-Cy-B6c">
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<rect key="frame" x="18" y="323" width="284" height="29"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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</slider>
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<label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleToFill" text="Download Progress:" lineBreakMode="tailTruncation" minimumFontSize="10" id="pEk-Dg-EIy">
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<rect key="frame" x="20" y="85" width="154" height="21"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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<fontDescription key="fontDescription" type="system" pointSize="17"/>
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<color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
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<nil key="highlightedColor"/>
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</label>
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<label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleToFill" text="Volume:" lineBreakMode="tailTruncation" minimumFontSize="10" id="wU8-p7-Dfc">
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<rect key="frame" x="20" y="281" width="220" height="21"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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<fontDescription key="fontDescription" type="system" pointSize="17"/>
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<color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
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<nil key="highlightedColor"/>
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</label>
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<progressView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" id="wG9-jD-zWY">
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<rect key="frame" x="20" y="134" width="280" height="2"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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</progressView>
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<label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleToFill" text="Streaming audio:" lineBreakMode="tailTruncation" minimumFontSize="10" id="d3N-Vw-0MV">
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<rect key="frame" x="20" y="20" width="130" height="21"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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<fontDescription key="fontDescription" type="system" pointSize="17"/>
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<color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
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<nil key="highlightedColor"/>
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</label>
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<label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleToFill" text="Sample Time:" lineBreakMode="tailTruncation" minimumFontSize="10" id="CqO-hs-cJP">
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<rect key="frame" x="20" y="175" width="273" height="21"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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<fontDescription key="fontDescription" type="system" pointSize="17"/>
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<color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
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<nil key="highlightedColor"/>
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</label>
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<button opaque="NO" clearsContextBeforeDrawing="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" id="SP7-sW-LfZ">
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<rect key="frame" x="124" y="372" width="72" height="37"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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<fontDescription key="fontDescription" name="Helvetica-Bold" family="Helvetica" pointSize="15"/>
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<state key="normal" title="Pause">
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<color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
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</state>
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</button>
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<label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" text="Label" textAlignment="right" lineBreakMode="tailTruncation" minimumFontSize="10" id="C0l-Uf-RPu">
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<rect key="frame" x="198" y="175" width="102" height="21"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
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<fontDescription key="fontDescription" type="system" pointSize="17"/>
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<color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
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<nil key="highlightedColor"/>
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</label>
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</subviews>
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<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
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</view>
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</objects>
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</document>
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