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// --------------------------------------------------------------------------------------------------------------------
// <copyright file="LibEncode.cs" company="HandBrake Project (http://handbrake.fr)">
// This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
// </copyright>
// <summary>
// LibHB Implementation of IEncode
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrakeWPF.Services.Encode
{
using System;
using System.Diagnostics;
using HandBrake.ApplicationServices.Interop;
using HandBrake.ApplicationServices.Interop.EventArgs;
using HandBrake.ApplicationServices.Interop.Interfaces;
using HandBrake.ApplicationServices.Model;
using HandBrakeWPF.Exceptions;
using HandBrakeWPF.Services.Encode.Factories;
using EncodeTask = HandBrakeWPF.Services.Encode.Model.EncodeTask;
using IEncode = HandBrakeWPF.Services.Encode.Interfaces.IEncode;
/// <summary>
/// LibHB Implementation of IEncode
/// </summary>
public class LibEncode : HandBrakeWPF.Services.Encode.EncodeBase, IEncode
{
#region Private Variables
private static readonly object LogLock = new object();
private IHandBrakeInstance instance;
private DateTime startTime;
private EncodeTask currentTask;
private HBConfiguration currentConfiguration;
private bool isPreviewInstance;
#endregion
/// <summary>
/// Gets a value indicating whether is pasued.
/// </summary>
public bool IsPasued { get; private set; }
/// <summary>
/// Start with a LibHb EncodeJob Object
/// </summary>
/// <param name="task">
/// The task.
/// </param>
/// <param name="configuration">
/// The configuration.
/// </param>
public void Start(EncodeTask task, HBConfiguration configuration)
{
try
{
// Sanity Checking and Setup
if (this.IsEncoding)
{
throw new GeneralApplicationException("HandBrake is already encoding a file.", "Please stop the current encode. If the problem persists, please restart HandBrake.", null);
}
// Setup
this.startTime = DateTime.Now;
this.currentTask = task;
this.currentConfiguration = configuration;
// Create a new HandBrake instance
// Setup the HandBrake Instance
HandBrakeUtils.MessageLogged += this.HandBrakeInstanceMessageLogged;
HandBrakeUtils.ErrorLogged += this.HandBrakeInstanceErrorLogged;
this.instance = task.IsPreviewEncode ? HandBrakeInstanceManager.GetPreviewInstance(configuration.Verbosity) : HandBrakeInstanceManager.GetEncodeInstance(configuration.Verbosity);
this.instance.EncodeCompleted += this.InstanceEncodeCompleted;
this.instance.EncodeProgress += this.InstanceEncodeProgress;
this.IsEncoding = true;
this.isPreviewInstance = task.IsPreviewEncode;
this.SetupLogging(task.IsPreviewEncode);
// Verify the Destination Path Exists, and if not, create it.
this.VerifyEncodeDestinationPath(task);
this.ServiceLogMessage("Starting Encode ...");
// Get an EncodeJob object for the Interop Library
this.instance.StartEncode(EncodeFactory.Create(task, configuration));
// Fire the Encode Started Event
this.InvokeEncodeStarted(System.EventArgs.Empty);
}
catch (Exception exc)
{
this.IsEncoding = false;
this.ServiceLogMessage("Failed to start encoding ..." + Environment.NewLine + exc);
this.InvokeEncodeCompleted(new HandBrakeWPF.Services.Encode.EventArgs.EncodeCompletedEventArgs(false, exc, "Unable to start encoding", task.Source));
}
}
/// <summary>
/// Pause the currently running encode.
/// </summary>
public void Pause()
{
if (this.instance != null)
{
this.instance.PauseEncode();
this.ServiceLogMessage("Encode Paused");
this.IsPasued = true;
}
}
/// <summary>
/// Resume the currently running encode.
/// </summary>
public void Resume()
{
if (this.instance != null)
{
this.instance.ResumeEncode();
this.ServiceLogMessage("Encode Resumed");
this.IsPasued = false;
}
}
/// <summary>
/// Kill the process
/// </summary>
public void Stop()
{
try
{
this.IsEncoding = false;
if (this.instance != null)
{
this.instance.StopEncode();
this.ServiceLogMessage("Encode Stopped");
}
}
catch (Exception exc)
{
Debug.WriteLine(exc);
}
}
#region HandBrakeInstance Event Handlers.
/// <summary>
/// Log a message
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The MessageLoggedEventArgs.
/// </param>
private void HandBrakeInstanceErrorLogged(object sender, MessageLoggedEventArgs e)
{
lock (LogLock)
{
this.ProcessLogMessage(e.Message);
}
}
/// <summary>
/// Log a message
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The MessageLoggedEventArgs.
/// </param>
private void HandBrakeInstanceMessageLogged(object sender, MessageLoggedEventArgs e)
{
lock (LogLock)
{
this.ProcessLogMessage(e.Message);
}
}
/// <summary>
/// Encode Progress Event Handler
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The Interop.EncodeProgressEventArgs.
/// </param>
private void InstanceEncodeProgress(object sender, EncodeProgressEventArgs e)
{
HandBrakeWPF.Services.Encode.EventArgs.EncodeProgressEventArgs args = new HandBrakeWPF.Services.Encode.EventArgs.EncodeProgressEventArgs
{
AverageFrameRate = e.AverageFrameRate,
CurrentFrameRate = e.CurrentFrameRate,
EstimatedTimeLeft = e.EstimatedTimeLeft,
PercentComplete = e.FractionComplete * 100,
Task = e.Pass,
TaskCount = e.PassCount,
ElapsedTime = DateTime.Now - this.startTime,
};
this.InvokeEncodeStatusChanged(args);
}
/// <summary>
/// Encode Completed Event Handler
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The e.
/// </param>
private void InstanceEncodeCompleted(object sender, EncodeCompletedEventArgs e)
{
this.IsEncoding = false;
this.ServiceLogMessage("Encode Completed ...");
// Stop Logging.
HandBrakeUtils.MessageLogged -= this.HandBrakeInstanceMessageLogged;
HandBrakeUtils.ErrorLogged -= this.HandBrakeInstanceErrorLogged;
// Handling Log Data
this.ProcessLogs(this.currentTask.Destination, this.isPreviewInstance, this.currentConfiguration);
// Cleanup
this.ShutdownFileWriter();
// Raise the Encode Completed EVent.
this.InvokeEncodeCompleted(
e.Error
? new HandBrakeWPF.Services.Encode.EventArgs.EncodeCompletedEventArgs(false, null, string.Empty, this.currentTask.Destination)
: new HandBrakeWPF.Services.Encode.EventArgs.EncodeCompletedEventArgs(true, null, string.Empty, this.currentTask.Destination));
}
#endregion
}
}
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