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// --------------------------------------------------------------------------------------------------------------------
// <copyright file="LibScan.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>
// Scan a Source
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrake.ApplicationServices.Services.Scan
{
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Windows.Media.Imaging;
using HandBrake.ApplicationServices.Model;
using HandBrake.ApplicationServices.Services.Encode.Model;
using HandBrake.ApplicationServices.Services.Scan.EventArgs;
using HandBrake.ApplicationServices.Services.Scan.Interfaces;
using HandBrake.ApplicationServices.Services.Scan.Model;
using HandBrake.ApplicationServices.Utilities;
using HandBrake.Interop;
using HandBrake.Interop.EventArgs;
using HandBrake.Interop.Interfaces;
using HandBrake.Interop.Model;
using HandBrake.Interop.Model.Scan;
using Chapter = HandBrake.ApplicationServices.Services.Scan.Model.Chapter;
using ScanProgressEventArgs = HandBrake.Interop.EventArgs.ScanProgressEventArgs;
using Size = System.Drawing.Size;
using Subtitle = HandBrake.ApplicationServices.Services.Scan.Model.Subtitle;
using SubtitleType = HandBrake.ApplicationServices.Model.Encoding.SubtitleType;
using Title = HandBrake.ApplicationServices.Services.Scan.Model.Title;
/// <summary>
/// Scan a Source
/// </summary>
public class LibScan : IScan
{
/*
* TODO
* 1. Expose the Previews code.
* 2. Cleanup old instances.
*
*/
#region Private Variables
/// <summary>
/// Lock for the log file
/// </summary>
static readonly object LogLock = new object();
/// <summary>
/// Log data from HandBrakeInstance
/// </summary>
private readonly StringBuilder logging;
/// <summary>
/// The Log File Header
/// </summary>
private readonly StringBuilder header;
/// <summary>
/// The Current source scan path.
/// </summary>
private string currentSourceScanPath;
/// <summary>
/// The log dir.
/// </summary>
private static string logDir = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "\\HandBrake\\logs";
/// <summary>
/// The dvd info path.
/// </summary>
private string dvdInfoPath = Path.Combine(logDir, string.Format("last_scan_log{0}.txt", GeneralUtilities.ProcessId));
/// <summary>
/// The scan log.
/// </summary>
private StreamWriter scanLog;
/// <summary>
/// LibHB Instance
/// </summary>
private IHandBrakeInstance instance;
/// <summary>
/// The post scan operation.
/// </summary>
private Action<bool> postScanOperation;
#endregion
/// <summary>
/// Initializes a new instance of the <see cref="LibScan"/> class.
/// </summary>
public LibScan()
{
this.logging = new StringBuilder();
this.header = GeneralUtilities.CreateCliLogHeader();
try
{
HandBrakeUtils.MessageLogged += this.HandBrakeInstanceMessageLogged;
HandBrakeUtils.ErrorLogged += this.HandBrakeInstanceErrorLogged;
}
catch (Exception)
{
// Do nothing.
}
}
#region Events
/// <summary>
/// Scan has Started
/// </summary>
public event EventHandler ScanStared;
/// <summary>
/// Scan has completed
/// </summary>
public event ScanCompletedStatus ScanCompleted;
/// <summary>
/// Encode process has progressed
/// </summary>
public event ScanProgessStatus ScanStatusChanged;
#endregion
#region Properties
/// <summary>
/// Gets a value indicating whether IsScanning.
/// </summary>
public bool IsScanning { get; private set; }
/// <summary>
/// Gets the Souce Data.
/// </summary>
public Source SouceData { get; private set; }
/// <summary>
/// Gets ActivityLog.
/// </summary>
public string ActivityLog
{
get
{
string noLog = "There is no log information to display." + Environment.NewLine + Environment.NewLine
+ "This window will only display logging information after you have scanned a source." + Environment.NewLine
+ Environment.NewLine + "You can find previous log files in the log directory or by clicking the 'Open Log Directory' button above.";
return string.IsNullOrEmpty(this.logging.ToString()) ? noLog : this.header + this.logging.ToString();
}
}
#endregion
#region Public Methods
/// <summary>
/// Scan a Source Path.
/// Title 0: scan all
/// </summary>
/// <param name="sourcePath">
/// Path to the file to scan
/// </param>
/// <param name="title">
/// int title number. 0 for scan all
/// </param>
/// <param name="postAction">
/// The post Action.
/// </param>
/// <param name="configuraiton">
/// The configuraiton.
/// </param>
public void Scan(string sourcePath, int title, Action<bool> postAction, HBConfiguration configuraiton)
{
// Try to cleanup any previous scan instances.
if (this.instance != null)
{
try
{
this.scanLog.Close();
this.scanLog.Dispose();
this.instance.Dispose();
}
catch (Exception)
{
// Do Nothing
}
}
// Handle the post scan operation.
this.postScanOperation = postAction;
// Clear down the logging
this.logging.Clear();
try
{
// Make we don't pick up a stale last_scan_log_xyz.txt (and that we have rights to the file)
if (File.Exists(this.dvdInfoPath))
{
File.Delete(this.dvdInfoPath);
}
}
catch (Exception)
{
// Do nothing.
}
if (!Directory.Exists(Path.GetDirectoryName(this.dvdInfoPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(this.dvdInfoPath));
}
// Create a new scan log.
this.scanLog = new StreamWriter(this.dvdInfoPath);
// Create a new HandBrake Instance.
this.instance = new HandBrakeInstance();
this.instance.Initialize(1);
this.instance.ScanProgress += this.InstanceScanProgress;
this.instance.ScanCompleted += this.InstanceScanCompleted;
// Start the scan on a back
this.ScanSource(sourcePath, title, configuraiton.PreviewScanCount, configuraiton);
}
/// <summary>
/// Kill the scan
/// </summary>
public void Stop()
{
this.instance.StopScan();
try
{
if (this.scanLog != null)
{
this.scanLog.Close();
this.scanLog.Dispose();
}
}
catch (Exception)
{
// Do Nothing.
}
}
/// <summary>
/// Get a Preview image for the current job and preview number.
/// </summary>
/// <param name="job">
/// The job.
/// </param>
/// <param name="preview">
/// The preview.
/// </param>
/// <returns>
/// The <see cref="BitmapImage"/>.
/// </returns>
public BitmapImage GetPreview(EncodeTask job, int preview)
{
if (this.instance == null)
{
return null;
}
EncodeJob encodeJob = InteropModelCreator.GetEncodeJob(job);
BitmapImage bitmapImage = null;
try
{
bitmapImage = this.instance.GetPreview(encodeJob, preview);
}
catch (AccessViolationException e)
{
Console.WriteLine(e);
}
return bitmapImage;
}
#endregion
#region Private Methods
/// <summary>
/// Start a scan for a given source path and title
/// </summary>
/// <param name="sourcePath">
/// Path to the source file
/// </param>
/// <param name="title">
/// the title number to look at
/// </param>
/// <param name="previewCount">
/// The preview Count.
/// </param>
/// <param name="configuraiton">
/// The configuraiton.
/// </param>
private void ScanSource(object sourcePath, int title, int previewCount, HBConfiguration configuraiton)
{
try
{
this.logging.Clear();
string source = sourcePath.ToString().EndsWith("\\") ? string.Format("\"{0}\\\\\"", sourcePath.ToString().TrimEnd('\\'))
: "\"" + sourcePath + "\"";
this.currentSourceScanPath = source;
this.IsScanning = true;
if (this.ScanStared != null)
this.ScanStared(this, System.EventArgs.Empty);
TimeSpan minDuration =
TimeSpan.FromSeconds(
configuraiton.MinScanDuration);
HandBrakeUtils.SetDvdNav(!configuraiton.IsDvdNavDisabled);
this.instance.StartScan(sourcePath.ToString(), previewCount, minDuration, title != 0 ? title : 0);
}
catch (Exception exc)
{
this.Stop();
if (this.ScanCompleted != null)
this.ScanCompleted(this, new ScanCompletedEventArgs(false, exc, "An Error has occured in ScanService.ScanSource()"));
}
}
#endregion
#region HandBrakeInstance Event Handlers
/// <summary>
/// Scan Completed Event Handler
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The EventArgs.
/// </param>
private void InstanceScanCompleted(object sender, System.EventArgs e)
{
// Write the log file out before we start processing incase we crash.
try
{
if (this.scanLog != null)
{
this.scanLog.Flush();
}
}
catch (Exception)
{
// Do Nothing.
}
// TODO -> Might be a better place to fix this.
string path = this.currentSourceScanPath;
if (this.currentSourceScanPath.Contains("\""))
{
path = this.currentSourceScanPath.Trim('\"');
}
// Process into internal structures.
this.SouceData = new Source { Titles = ConvertTitles(this.instance.Titles, this.instance.FeatureTitle), ScanPath = path };
this.IsScanning = false;
if (this.postScanOperation != null)
{
this.postScanOperation(true);
}
else
{
if (this.ScanCompleted != null) this.ScanCompleted(this, new ScanCompletedEventArgs(false, null, string.Empty));
}
}
/// <summary>
/// Scan Progress Event Handler
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The EventArgs.
/// </param>
private void InstanceScanProgress(object sender, ScanProgressEventArgs e)
{
if (this.ScanStatusChanged != null)
{
EventArgs.ScanProgressEventArgs eventArgs =
new EventArgs.ScanProgressEventArgs
{
CurrentTitle = e.CurrentTitle,
Titles = e.Titles,
Percentage = Math.Round((decimal)e.Progress * 100, 0)
};
this.ScanStatusChanged(this, eventArgs);
}
}
/// <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)
{
if (this.scanLog != null)
{
this.scanLog.WriteLine(e.Message);
}
this.logging.AppendLine(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)
{
if (this.scanLog != null)
{
this.scanLog.WriteLine(e.Message);
}
this.logging.AppendLine(e.Message);
}
}
/// <summary>
/// Convert Interop Title objects to App Services Title object
/// </summary>
/// <param name="titles">
/// The titles.
/// </param>
/// <param name="featureTitle">
/// The feature Title.
/// </param>
/// <returns>
/// The convert titles.
/// </returns>
internal static List<Title> ConvertTitles(IEnumerable<Interop.Model.Scan.Title> titles, int featureTitle)
{
List<Title> titleList = new List<Title>();
foreach (Interop.Model.Scan.Title title in titles)
{
Title converted = new Title
{
TitleNumber = title.TitleNumber,
Duration = title.Duration,
Resolution = new Size(title.Resolution.Width, title.Resolution.Height),
AspectRatio = (decimal)title.AspectRatio,
AngleCount = title.AngleCount,
ParVal = new Size(title.ParVal.Width, title.ParVal.Height),
AutoCropDimensions = title.AutoCropDimensions,
Fps = title.Framerate,
SourceName = title.Path,
MainTitle = title.TitleNumber == featureTitle,
Playlist = title.InputType == InputType.Bluray ? string.Format(" {0:d5}.MPLS", title.Playlist).Trim() : null,
FramerateNumerator = title.FramerateNumerator,
FramerateDenominator = title.FramerateDenominator
};
foreach (Interop.Model.Scan.Chapter chapter in title.Chapters)
{
string chapterName = !string.IsNullOrEmpty(chapter.Name) ? chapter.Name : string.Empty;
converted.Chapters.Add(new Chapter(chapter.ChapterNumber, chapterName, chapter.Duration));
}
foreach (AudioTrack track in title.AudioTracks)
{
converted.AudioTracks.Add(new Audio(track.TrackNumber, track.Language, track.LanguageCode, track.Description, string.Empty, track.SampleRate, track.Bitrate));
}
foreach (Interop.Model.Scan.Subtitle track in title.Subtitles)
{
SubtitleType convertedType = new SubtitleType();
switch (track.SubtitleSource)
{
case SubtitleSource.VobSub:
convertedType = SubtitleType.VobSub;
break;
case SubtitleSource.UTF8:
convertedType = SubtitleType.UTF8Sub;
break;
case SubtitleSource.TX3G:
convertedType = SubtitleType.TX3G;
break;
case SubtitleSource.SSA:
convertedType = SubtitleType.SSA;
break;
case SubtitleSource.SRT:
convertedType = SubtitleType.SRT;
break;
case SubtitleSource.CC608:
convertedType = SubtitleType.CC;
break;
case SubtitleSource.CC708:
convertedType = SubtitleType.CC;
break;
case SubtitleSource.PGS:
convertedType = SubtitleType.PGS;
break;
}
converted.Subtitles.Add(new Subtitle(track.SubtitleSourceInt, track.TrackNumber, track.Language, track.LanguageCode, convertedType, track.CanBurn, track.CanSetForcedOnly));
}
titleList.Add(converted);
}
return titleList;
}
#endregion
}
}
|