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using System;
using System.Windows.Forms;
using System.Threading;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.IO;
using Handbrake.EncodeQueue;
using Handbrake.Functions;
using QTOControlLib;
using QTOLibrary;
namespace Handbrake
{
public partial class frmPreview : Form
{
readonly Queue Process = new Queue();
private delegate void UpdateUIHandler();
String CurrentlyPlaying = "";
readonly frmMain MainWindow;
private Thread Player;
private readonly Boolean NoQT;
public frmPreview(frmMain mw)
{
try
{
InitializeComponent();
}
catch (Exception)
{
NoQT = true;
}
this.MainWindow = mw;
cb_preview.SelectedIndex = 0;
cb_duration.SelectedIndex = 1;
cb_preview.Items.Clear();
for (int i = 1; i <= Properties.Settings.Default.previewScanCount; i++)
cb_preview.Items.Add(i.ToString());
cb_preview.SelectedIndex = 0;
}
#region Encode Sample
private void btn_playVLC_Click(object sender, EventArgs e)
{
lbl_status.Visible = true;
try
{
if (!NoQT)
QTControl.URL = "";
if (File.Exists(CurrentlyPlaying))
File.Delete(CurrentlyPlaying);
}
catch (Exception)
{
MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
btn_playQT.Enabled = false;
btn_playVLC.Enabled = false;
lbl_status.Text = "Encoding Sample for (VLC) ...";
int duration;
int.TryParse(cb_duration.Text, out duration);
String query = QueryGenerator.GenerateCliQuery(MainWindow, 3, duration, cb_preview.Text);
ThreadPool.QueueUserWorkItem(ProcMonitor, query);
}
private void btn_playQT_Click(object sender, EventArgs e)
{
if (NoQT)
{
MessageBox.Show(this, "It would appear QuickTime 7 is not installed or not accessible. Please (re)install QuickTime.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (MainWindow.text_destination.Text.Contains(".mkv"))
{
MessageBox.Show(this,
"The QuickTime Control does not support MKV files, It is recommended you use VLC option instead.",
"Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
lbl_status.Visible = true;
try
{
QTControl.URL = "";
if (File.Exists(CurrentlyPlaying))
File.Delete(CurrentlyPlaying);
}
catch (Exception)
{
MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
btn_playQT.Enabled = false;
btn_playVLC.Enabled = false;
lbl_status.Text = "Encoding Sample for (QT) ...";
int duration;
int.TryParse(cb_duration.Text, out duration);
String query = QueryGenerator.GenerateCliQuery(MainWindow, 3, duration, cb_preview.Text);
ThreadPool.QueueUserWorkItem(ProcMonitor, query);
}
}
private void ProcMonitor(object state)
{
// Make sure we are not already encoding and if we are then display an error.
if (Process.HbProcess != null)
MessageBox.Show(this, "Handbrake is already encoding a video!", "Status", MessageBoxButtons.OK, MessageBoxIcon.Warning);
else
{
Process.CreatePreviewSample((string)state);
if (Process.HbProcess != null)
{
Process.HbProcess.WaitForExit();
Process.HbProcess = null;
}
EncodeCompleted();
}
}
private void EncodeCompleted()
{
try
{
if (InvokeRequired)
{
BeginInvoke(new UpdateUIHandler(EncodeCompleted));
return;
}
if (!NoQT)
btn_playQT.Enabled = true;
btn_playVLC.Enabled = true;
// Decide which Player to use.
String playerSelection = lbl_status.Text.Contains("QT") ? "QT" : "VLC";
lbl_status.Text = "Loading Clip ...";
// Get the sample filename
if (MainWindow.text_destination.Text != "")
CurrentlyPlaying = MainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v").Replace(".mkv", "_sample.mkv"); ;
// Play back in QT or VLC
if (playerSelection == "QT")
Play();
else
PlayVLC();
lbl_status.Text = "";
}
catch (Exception exc)
{
MessageBox.Show(this, "frmPreview.cs EncodeCompleted " + exc, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
#endregion
#region Playback
/// <summary>
/// Play the video back in the QuickTime control
/// </summary>
private void Play()
{
Player = new Thread(OpenMovie) { IsBackground = true };
Player.Start();
lbl_status.Visible = false;
}
/// <summary>
/// Play the video back in an external VLC Player
/// </summary>
private void PlayVLC()
{
// Launch VLC and Play video.
if (CurrentlyPlaying != "")
{
if (File.Exists(CurrentlyPlaying))
{
// Attempt to find VLC if it doesn't exist in the default set location.
string vlcPath;
if (8 == IntPtr.Size || (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432"))))
vlcPath = Environment.GetEnvironmentVariable("ProgramFiles(x86)");
else
vlcPath = Environment.GetEnvironmentVariable("ProgramFiles");
vlcPath = vlcPath != null ? vlcPath + @"\VideoLAN\VLC\vlc.exe" : @"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe";
if (!File.Exists(Properties.Settings.Default.VLC_Path))
{
if (File.Exists(vlcPath))
{
Properties.Settings.Default.VLC_Path = "C:\\Program Files (x86)\\VideoLAN\\VLC\\vlc.exe";
Properties.Settings.Default.Save(); // Save this new path if it does
}
else
{
MessageBox.Show(this,
"Unable to detect VLC Player. \nPlease make sure VLC is installed and the directory specified in HandBrake's options is correct. (See: \"Tools Menu > Options > Picture Tab\") ",
"VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
if (File.Exists(Properties.Settings.Default.VLC_Path))
{
String args = "\"" + CurrentlyPlaying + "\"";
ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);
System.Diagnostics.Process.Start(vlc);
lbl_status.Text = "VLC will now launch.";
}
}
else
MessageBox.Show(this, "Unable to find the preview file. Either the file was deleted or the encode failed. Check the activity log for details.", "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
lbl_status.Visible = false;
}
/// <summary>
/// QT control - Open the file
/// </summary>
[STAThread]
private void OpenMovie()
{
try
{
if (InvokeRequired)
{
BeginInvoke(new UpdateUIHandler(OpenMovie));
return;
}
QTControl.URL = CurrentlyPlaying;
QTControl.SetSizing(QTSizingModeEnum.qtControlFitsMovie, true);
QTControl.URL = CurrentlyPlaying;
QTControl.Show();
this.ClientSize = QTControl.Size;
this.Height += 25;
}
catch (COMException ex)
{
QTUtils qtu = new QTUtils();
MessageBox.Show(this, "Unable to open movie:\n\nError Code: " + ex.ErrorCode.ToString("X") + "\nQT Error code : " + qtu.QTErrorFromErrorCode(ex.ErrorCode), "QT", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
catch (Exception ex)
{
MessageBox.Show(this, "Unable to open movie:\n\n" + ex, "QT", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
#endregion
}
}
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