diff options
Diffstat (limited to 'win/C#/HandBrake.ApplicationServices/Services/ScanService.cs')
| -rw-r--r-- | win/C#/HandBrake.ApplicationServices/Services/ScanService.cs | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/win/C#/HandBrake.ApplicationServices/Services/ScanService.cs b/win/C#/HandBrake.ApplicationServices/Services/ScanService.cs new file mode 100644 index 000000000..9b85740cd --- /dev/null +++ b/win/C#/HandBrake.ApplicationServices/Services/ScanService.cs @@ -0,0 +1,354 @@ +/* Scan.cs $
+ This file is part of the HandBrake source code.
+ Homepage: <http://handbrake.fr>.
+ It may be used under the terms of the GNU General Public License. */
+
+namespace HandBrake.ApplicationServices.Services
+{
+ using System;
+ using System.Diagnostics;
+ using System.IO;
+ using System.Text;
+ using System.Threading;
+ using System.Windows.Forms;
+
+ using HandBrake.ApplicationServices.EventArgs;
+ using HandBrake.ApplicationServices.Parsing;
+ using HandBrake.ApplicationServices.Services.Interfaces;
+
+ /// <summary>
+ /// Scan a Source
+ /// </summary>
+ public class ScanService : IScan
+ {
+ #region Private Variables
+
+ /// <summary>
+ /// A Lock object
+ /// </summary>
+ private static readonly object locker = new object();
+
+ /// <summary>
+ /// The CLI data parser
+ /// </summary>
+ private Parser readData;
+
+ /// <summary>
+ /// The Log Buffer
+ /// </summary>
+ private StringBuilder logBuffer;
+
+ /// <summary>
+ /// The line number thats been read to in the log file
+ /// </summary>
+ private int logFilePosition;
+
+ /// <summary>
+ /// The Process belonging to the CLI
+ /// </summary>
+ private Process hbProc;
+
+ #endregion
+
+ /// <summary>
+ /// Initializes a new instance of the <see cref="ScanService"/> class.
+ /// </summary>
+ public ScanService()
+ {
+ }
+
+ #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 Public Properties
+
+ /// <summary>
+ /// Gets a value indicating whether IsScanning.
+ /// </summary>
+ public bool IsScanning { get; private set; }
+
+ /// <summary>
+ /// Gets the Souce Data.
+ /// </summary>
+ public DVD SouceData { get; private set; }
+
+ /// <summary>
+ /// Gets ActivityLog.
+ /// </summary>
+ public string ActivityLog
+ {
+ get
+ {
+ if (IsScanning)
+ return readData.Buffer.ToString();
+
+ if (logBuffer == null)
+ {
+ ResetLogReader(false);
+ ReadLastScanFile();
+ }
+
+ return logBuffer != null ? logBuffer.ToString() : string.Empty;
+ }
+ }
+
+ #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>
+ public void Scan(string sourcePath, int title)
+ {
+ Thread t = new Thread(unused => this.ScanSource(sourcePath, title));
+ t.Start();
+ }
+
+ /// <summary>
+ /// Kill the scan
+ /// </summary>
+ public void Stop()
+ {
+ try
+ {
+ // Try to clean things up as best as possible.
+ if (this.readData != null)
+ {
+ this.readData.OnScanProgress -= this.OnScanProgress;
+ }
+
+ if (hbProc != null && !hbProc.HasExited)
+ hbProc.Kill();
+ }
+ catch
+ {
+ // We don't really need to notify the user of any errors here.
+ }
+ }
+ #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>
+ private void ScanSource(object sourcePath, int title)
+ {
+ try
+ {
+ IsScanning = true;
+ if (this.ScanStared != null)
+ {
+ this.ScanStared(this, new EventArgs());
+ }
+
+ ResetLogReader(true);
+
+ string handbrakeCLIPath = Path.Combine(Application.StartupPath, "HandBrakeCLI.exe");
+ string logDir = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) +
+ "\\HandBrake\\logs";
+ string dvdInfoPath = Path.Combine(
+ logDir,
+ string.Format("last_scan_log{0}.txt", Init.InstanceId == 0 ? string.Empty : Init.InstanceId.ToString()));
+
+ // Make we don't pick up a stale last_encode_log.txt (and that we have rights to the file)
+ if (File.Exists(dvdInfoPath))
+ {
+ File.Delete(dvdInfoPath);
+ }
+
+ string extraArguments = string.Empty;
+ if (Init.DisableDvdNav)
+ {
+ extraArguments = " --no-dvdnav";
+ }
+
+ if (title > 0)
+ {
+ extraArguments += " --scan ";
+ }
+
+ // Quick fix for "F:\\" style paths. Just get rid of the \\ so the CLI doesn't fall over.
+ // Sould probably clean up the escaping of the strings later.
+ string source = sourcePath.ToString().EndsWith("\\") ? sourcePath.ToString() : "\"" + sourcePath + "\"";
+
+ this.hbProc = new Process
+ {
+ StartInfo =
+ {
+ FileName = handbrakeCLIPath,
+ Arguments = String.Format(@" -i ""{0}"" -t{1} {2} -v ", sourcePath, title, extraArguments),
+ RedirectStandardOutput = true,
+ RedirectStandardError = true,
+ UseShellExecute = false,
+ CreateNoWindow = true
+ }
+ };
+
+ string command = String.Format(@" -i {0} -t{1} {2} -v ", source, title, extraArguments);
+
+ this.hbProc = new Process
+ {
+ StartInfo =
+ {
+ FileName = handbrakeCLIPath,
+ Arguments = command,
+ RedirectStandardOutput = true,
+ RedirectStandardError = true,
+ UseShellExecute = false,
+ CreateNoWindow = true
+ }
+ };
+
+ // Start the Scan
+ this.hbProc.Start();
+
+ this.readData = new Parser(this.hbProc.StandardError.BaseStream);
+ this.readData.OnScanProgress += this.OnScanProgress;
+ this.SouceData = DVD.Parse(this.readData);
+
+ // Write the Buffer out to file.
+ using (StreamWriter scanLog = new StreamWriter(dvdInfoPath))
+ {
+ // Only write the log file to disk if it's less than 100MB.
+ if (this.readData.Buffer.Length < 100000000)
+ {
+ scanLog.WriteLine(UtilityService.CreateCliLogHeader(null));
+ scanLog.Write(this.readData.Buffer);
+ logBuffer.AppendLine(this.readData.Buffer.ToString());
+ }
+ else
+ {
+ throw new Exception(
+ "The Log file has not been written to disk as it has grown above the 100MB limit. This indicates there was a problem during the scan process.");
+ }
+ }
+
+ IsScanning = false;
+
+ if (this.ScanCompleted != null)
+ {
+ this.ScanCompleted(this, new ScanCompletedEventArgs(true, null, string.Empty));
+ }
+ }
+ catch (Exception exc)
+ {
+ this.Stop();
+
+ if (this.ScanCompleted != null)
+ this.ScanCompleted(this, new ScanCompletedEventArgs(false, exc, "An Error has occured in ScanService.ScanSource()"));
+ }
+ }
+
+ /// <summary>
+ /// Read the log file
+ /// </summary>
+ private void ReadLastScanFile()
+ {
+ lock (locker)
+ {
+ // last_encode_log.txt is the primary log file. Since .NET can't read this file whilst the CLI is outputing to it (Not even in read only mode),
+ // we'll need to make a copy of it.
+ string logDir = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) +
+ "\\HandBrake\\logs";
+ string logFile = Path.Combine(logDir, string.Format("last_scan_log{0}.txt", Init.InstanceId == 0 ? string.Empty : Init.InstanceId.ToString()));
+ string logFile2 = Path.Combine(logDir, string.Format("tmp_appReadable_log{0}.txt", Init.InstanceId == 0 ? string.Empty : Init.InstanceId.ToString()));
+
+ try
+ {
+ // Make sure the application readable log file does not already exist. FileCopy fill fail if it does.
+ if (File.Exists(logFile2))
+ File.Delete(logFile2);
+
+ // Copy the log file.
+ if (File.Exists(logFile))
+ File.Copy(logFile, logFile2, true);
+ else
+ {
+ ResetLogReader(true);
+ return;
+ }
+
+ // Start the Reader
+ // Only use text which continues on from the last read line
+ StreamReader sr = new StreamReader(logFile2);
+ string line;
+ int i = 1;
+ while ((line = sr.ReadLine()) != null)
+ {
+ if (i > logFilePosition)
+ {
+ logBuffer.AppendLine(line);
+ logFilePosition++;
+ }
+ i++;
+ }
+ sr.Close();
+ sr.Dispose();
+ }
+ catch (Exception exc)
+ {
+ ResetLogReader(true);
+ }
+ }
+ }
+
+ /// <summary>
+ /// Reset the Log Reader
+ /// </summary>
+ /// <param name="addHeader">
+ /// The add Header.
+ /// </param>
+ private void ResetLogReader(bool addHeader)
+ {
+ logFilePosition = 0;
+ logBuffer = new StringBuilder();
+ if (addHeader)
+ logBuffer.AppendLine(UtilityService.CreateCliLogHeader(null));
+ }
+
+ /// <summary>
+ /// Fire an event when the scan process progresses
+ /// </summary>
+ /// <param name="sender">the sender</param>
+ /// <param name="currentTitle">the current title being scanned</param>
+ /// <param name="titleCount">the total number of titles</param>
+ private void OnScanProgress(object sender, int currentTitle, int titleCount)
+ {
+ ScanProgressEventArgs eventArgs = new ScanProgressEventArgs
+ {
+ CurrentTitle = currentTitle,
+ Titles = titleCount
+ };
+
+ if (this.ScanStatusChanged != null)
+ {
+ this.ScanStatusChanged(this, eventArgs);
+ }
+ }
+
+ #endregion
+ }
+}
\ No newline at end of file |