jellyfin/MediaBrowser.Plugins.MpcHc/MpcHcMediaPlayer.cs
2013-02-20 20:33:05 -05:00

575 lines
19 KiB
C#

using MediaBrowser.Common.Logging;
using MediaBrowser.Model.DTO;
using MediaBrowser.Model.Entities;
using MediaBrowser.UI.Configuration;
using MediaBrowser.UI.Controller;
using MediaBrowser.UI.Playback;
using MediaBrowser.UI.Playback.ExternalPlayer;
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Plugins.MpcHc
{
/// <summary>
/// Class GenericExternalPlayer
/// </summary>
[Export(typeof(BaseMediaPlayer))]
public class MpcHcMediaPlayer : BaseExternalPlayer
{
/// <summary>
/// The state sync lock
/// </summary>
private object stateSyncLock = new object();
/// <summary>
/// The MPC HTTP interface resource pool
/// </summary>
private SemaphoreSlim MpcHttpInterfaceResourcePool = new SemaphoreSlim(1, 1);
/// <summary>
/// Gets or sets the HTTP interface cancellation token.
/// </summary>
/// <value>The HTTP interface cancellation token.</value>
private CancellationTokenSource HttpInterfaceCancellationTokenSource { get; set; }
/// <summary>
/// Gets or sets a value indicating whether this instance has started playing.
/// </summary>
/// <value><c>true</c> if this instance has started playing; otherwise, <c>false</c>.</value>
private bool HasStartedPlaying { get; set; }
/// <summary>
/// Gets or sets the status update timer.
/// </summary>
/// <value>The status update timer.</value>
private Timer StatusUpdateTimer { get; set; }
/// <summary>
/// Gets a value indicating whether this instance can monitor progress.
/// </summary>
/// <value><c>true</c> if this instance can monitor progress; otherwise, <c>false</c>.</value>
protected override bool CanMonitorProgress
{
get
{
return true;
}
}
/// <summary>
/// The _current position ticks
/// </summary>
private long? _currentPositionTicks;
/// <summary>
/// Gets the current position ticks.
/// </summary>
/// <value>The current position ticks.</value>
public override long? CurrentPositionTicks
{
get
{
return _currentPositionTicks;
}
}
/// <summary>
/// The _current playlist index
/// </summary>
private int _currentPlaylistIndex;
/// <summary>
/// Gets the index of the current playlist.
/// </summary>
/// <value>The index of the current playlist.</value>
public override int CurrentPlaylistIndex
{
get
{
return _currentPlaylistIndex;
}
}
/// <summary>
/// Gets the name.
/// </summary>
/// <value>The name.</value>
public override string Name
{
get { return "MpcHc"; }
}
/// <summary>
/// Gets a value indicating whether this instance can close automatically.
/// </summary>
/// <value><c>true</c> if this instance can close automatically; otherwise, <c>false</c>.</value>
protected override bool CanCloseAutomatically
{
get
{
return true;
}
}
/// <summary>
/// Determines whether this instance can play the specified item.
/// </summary>
/// <param name="item">The item.</param>
/// <returns><c>true</c> if this instance can play the specified item; otherwise, <c>false</c>.</returns>
public override bool CanPlay(DtoBaseItem item)
{
return item.IsVideo || item.IsAudio;
}
/// <summary>
/// Gets the command arguments.
/// </summary>
/// <param name="items">The items.</param>
/// <param name="options">The options.</param>
/// <param name="playerConfiguration">The player configuration.</param>
/// <returns>System.String.</returns>
protected override string GetCommandArguments(List<DtoBaseItem> items, PlayOptions options, PlayerConfiguration playerConfiguration)
{
var formatString = "{0} /play /fullscreen /close";
var firstItem = items[0];
var startTicks = Math.Max(options.StartPositionTicks, 0);
if (startTicks > 0 && firstItem.IsVideo && firstItem.VideoType.HasValue && firstItem.VideoType.Value == VideoType.Dvd)
{
formatString += " /dvdpos 1#" + TimeSpan.FromTicks(startTicks).ToString("hh\\:mm\\:ss");
}
else
{
formatString += " /start " + TimeSpan.FromTicks(startTicks).TotalMilliseconds;
}
return GetCommandArguments(items, formatString);
}
/// <summary>
/// Gets the path for command line.
/// </summary>
/// <param name="item">The item.</param>
/// <returns>System.String.</returns>
protected override string GetPathForCommandLine(DtoBaseItem item)
{
var path = base.GetPathForCommandLine(item);
if (item.IsVideo && item.VideoType.HasValue)
{
if (item.VideoType.Value == VideoType.Dvd)
{
// Point directly to the video_ts path
// Otherwise mpc will play any other media files that might exist in the dvd top folder (e.g. video backdrops).
var videoTsPath = Path.Combine(path, "video_ts");
if (Directory.Exists(videoTsPath))
{
path = videoTsPath;
}
}
if (item.VideoType.Value == VideoType.BluRay)
{
// Point directly to the bdmv path
var bdmvPath = Path.Combine(path, "bdmv");
if (Directory.Exists(bdmvPath))
{
path = bdmvPath;
}
}
}
return FormatPath(path);
}
/// <summary>
/// Formats the path.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>System.String.</returns>
private string FormatPath(string path)
{
if (path.EndsWith(":\\", StringComparison.OrdinalIgnoreCase))
{
path = path.TrimEnd('\\');
}
return path;
}
/// <summary>
/// Called when [external player launched].
/// </summary>
protected override void OnExternalPlayerLaunched()
{
base.OnExternalPlayerLaunched();
ReloadStatusUpdateTimer();
}
/// <summary>
/// Reloads the status update timer.
/// </summary>
private void ReloadStatusUpdateTimer()
{
DisposeStatusTimer();
HttpInterfaceCancellationTokenSource = new CancellationTokenSource();
StatusUpdateTimer = new Timer(OnStatusUpdateTimerStopped, null, TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(1));
}
/// <summary>
/// Called when [status update timer stopped].
/// </summary>
/// <param name="state">The state.</param>
private async void OnStatusUpdateTimerStopped(object state)
{
try
{
var token = HttpInterfaceCancellationTokenSource.Token;
using (var stream = await UIKernel.Instance.HttpManager.Get(StatusUrl, MpcHttpInterfaceResourcePool, token).ConfigureAwait(false))
{
token.ThrowIfCancellationRequested();
using (var reader = new StreamReader(stream))
{
token.ThrowIfCancellationRequested();
var result = await reader.ReadToEndAsync().ConfigureAwait(false);
token.ThrowIfCancellationRequested();
ProcessStatusResult(result);
}
}
}
catch (HttpRequestException ex)
{
Logger.ErrorException("Error connecting to MpcHc status interface", ex);
}
catch (OperationCanceledException)
{
// Manually cancelled by us
Logger.Info("Status request cancelled");
}
}
/// <summary>
/// Processes the status result.
/// </summary>
/// <param name="result">The result.</param>
private async void ProcessStatusResult(string result)
{
// Sample result
// OnStatus('test.avi', 'Playing', 5292, '00:00:05', 1203090, '00:20:03', 0, 100, 'C:\test.avi')
// 5292 = position in ms
// 00:00:05 = position
// 1203090 = duration in ms
// 00:20:03 = duration
var quoteChar = result.IndexOf(", \"", StringComparison.OrdinalIgnoreCase) == -1 ? '\'' : '\"';
// Strip off the leading "OnStatus(" and the trailing ")"
result = result.Substring(result.IndexOf(quoteChar));
result = result.Substring(0, result.LastIndexOf(quoteChar));
// Strip off the filename at the beginning
result = result.Substring(result.IndexOf(string.Format("{0}, {0}", quoteChar), StringComparison.OrdinalIgnoreCase) + 3);
// Find the last index of ", '" so that we can extract and then strip off the file path at the end.
var lastIndexOfSeparator = result.LastIndexOf(", " + quoteChar, StringComparison.OrdinalIgnoreCase);
// Get the current playing file path
var currentPlayingFile = result.Substring(lastIndexOfSeparator + 2).Trim(quoteChar);
// Strip off the current playing file path
result = result.Substring(0, lastIndexOfSeparator);
var values = result.Split(',').Select(v => v.Trim().Trim(quoteChar)).ToList();
var currentPositionTicks = TimeSpan.FromMilliseconds(double.Parse(values[1])).Ticks;
//var currentDurationTicks = TimeSpan.FromMilliseconds(double.Parse(values[3])).Ticks;
var playstate = values[0];
var playlistIndex = GetPlaylistIndex(currentPlayingFile);
if (playstate.Equals("stopped", StringComparison.OrdinalIgnoreCase))
{
if (HasStartedPlaying)
{
await ClosePlayer().ConfigureAwait(false);
}
}
else
{
lock (stateSyncLock)
{
if (_currentPlaylistIndex != playlistIndex)
{
OnMediaChanged(_currentPlaylistIndex, _currentPositionTicks, playlistIndex);
}
_currentPositionTicks = currentPositionTicks;
_currentPlaylistIndex = playlistIndex;
}
if (playstate.Equals("playing", StringComparison.OrdinalIgnoreCase))
{
HasStartedPlaying = true;
PlayState = PlayState.Playing;
}
else if (playstate.Equals("paused", StringComparison.OrdinalIgnoreCase))
{
HasStartedPlaying = true;
PlayState = PlayState.Paused;
}
}
}
/// <summary>
/// Gets the index of the playlist.
/// </summary>
/// <param name="nowPlayingPath">The now playing path.</param>
/// <returns>System.Int32.</returns>
private int GetPlaylistIndex(string nowPlayingPath)
{
for (var i = 0; i < Playlist.Count; i++)
{
var item = Playlist[i];
var pathArg = GetPathForCommandLine(item);
if (pathArg.Equals(nowPlayingPath, StringComparison.OrdinalIgnoreCase))
{
return i;
}
if (item.VideoType.HasValue)
{
if (item.VideoType.Value == VideoType.BluRay || item.VideoType.Value == VideoType.Dvd || item.VideoType.Value == VideoType.HdDvd)
{
if (nowPlayingPath.StartsWith(pathArg, StringComparison.OrdinalIgnoreCase))
{
return i;
}
}
}
}
return -1;
}
/// <summary>
/// Called when [player stopped internal].
/// </summary>
protected override void OnPlayerStoppedInternal()
{
HttpInterfaceCancellationTokenSource.Cancel();
DisposeStatusTimer();
_currentPositionTicks = null;
_currentPlaylistIndex = 0;
HasStartedPlaying = false;
HttpInterfaceCancellationTokenSource = null;
base.OnPlayerStoppedInternal();
}
/// <summary>
/// Disposes the status timer.
/// </summary>
private void DisposeStatusTimer()
{
if (StatusUpdateTimer != null)
{
StatusUpdateTimer.Dispose();
}
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected override void Dispose(bool dispose)
{
if (dispose)
{
DisposeStatusTimer();
MpcHttpInterfaceResourcePool.Dispose();
}
base.Dispose(dispose);
}
/// <summary>
/// Seeks the internal.
/// </summary>
/// <param name="positionTicks">The position ticks.</param>
/// <returns>Task.</returns>
protected override Task SeekInternal(long positionTicks)
{
var additionalParams = new Dictionary<string, string>();
var time = TimeSpan.FromTicks(positionTicks);
var timeString = time.Hours + ":" + time.Minutes + ":" + time.Seconds;
additionalParams.Add("position", timeString);
return SendCommandToPlayer("-1", additionalParams);
}
/// <summary>
/// Pauses the internal.
/// </summary>
/// <returns>Task.</returns>
protected override Task PauseInternal()
{
return SendCommandToPlayer("888", new Dictionary<string, string>());
}
/// <summary>
/// Uns the pause internal.
/// </summary>
/// <returns>Task.</returns>
protected override Task UnPauseInternal()
{
return SendCommandToPlayer("887", new Dictionary<string, string>());
}
/// <summary>
/// Stops the internal.
/// </summary>
/// <returns>Task.</returns>
protected override Task StopInternal()
{
return SendCommandToPlayer("890", new Dictionary<string, string>());
}
/// <summary>
/// Closes the player.
/// </summary>
/// <returns>Task.</returns>
protected Task ClosePlayer()
{
return SendCommandToPlayer("816", new Dictionary<string, string>());
}
/// <summary>
/// Sends a command to MPC using the HTTP interface
/// http://www.autohotkey.net/~specter333/MPC/HTTP%20Commands.txt
/// </summary>
/// <param name="commandNumber">The command number.</param>
/// <param name="additionalParams">The additional params.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">commandNumber</exception>
private async Task SendCommandToPlayer(string commandNumber, Dictionary<string, string> additionalParams)
{
if (string.IsNullOrEmpty(commandNumber))
{
throw new ArgumentNullException("commandNumber");
}
if (additionalParams == null)
{
throw new ArgumentNullException("additionalParams");
}
var url = CommandUrl + "?wm_command=" + commandNumber;
url = additionalParams.Keys.Aggregate(url, (current, name) => current + ("&" + name + "=" + additionalParams[name]));
Logger.Info("Sending command to MPC: " + url);
try
{
using (var stream = await UIKernel.Instance.HttpManager.Get(url, MpcHttpInterfaceResourcePool, HttpInterfaceCancellationTokenSource.Token).ConfigureAwait(false))
{
}
}
catch (HttpRequestException ex)
{
Logger.ErrorException("Error connecting to MpcHc command interface", ex);
}
catch (OperationCanceledException)
{
// Manually cancelled by us
Logger.Info("Command request cancelled");
}
}
/// <summary>
/// Gets a value indicating whether this instance can pause.
/// </summary>
/// <value><c>true</c> if this instance can pause; otherwise, <c>false</c>.</value>
public override bool CanPause
{
get
{
return true;
}
}
/// <summary>
/// Gets the server name that the http interface will be running on
/// </summary>
/// <value>The HTTP server.</value>
private string HttpServer
{
get
{
return "localhost";
}
}
/// <summary>
/// Gets the port that the web interface will be running on
/// </summary>
/// <value>The HTTP port.</value>
private string HttpPort
{
get
{
return "13579";
}
}
/// <summary>
/// Gets the url of that will be called to for status
/// </summary>
/// <value>The status URL.</value>
private string StatusUrl
{
get
{
return "http://" + HttpServer + ":" + HttpPort + "/status.html";
}
}
/// <summary>
/// Gets the url of that will be called to send commands
/// </summary>
/// <value>The command URL.</value>
private string CommandUrl
{
get
{
return "http://" + HttpServer + ":" + HttpPort + "/command.html";
}
}
}
}