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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
{
QueryGenerator hb_common_func = new QueryGenerator();
EncodeAndQueueHandler process = new EncodeAndQueueHandler();
private delegate void UpdateUIHandler();
String currently_playing = "";
readonly frmMain mainWindow;
private Thread player;
private Boolean noQT;
public frmPreview(frmMain mw)
{
try
{
InitializeComponent();
}
catch (Exception)
{
noQT = true;
}
this.mainWindow = mw;
cb_preview.SelectedIndex = 0;
cb_duration.SelectedIndex = 1;
}
#region Encode Sample
private void btn_playVLC_Click(object sender, EventArgs e)
{
lbl_status.Visible = true;
try
{
QTControl.URL = "";
if (File.Exists(currently_playing))
File.Delete(currently_playing);
}
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 = hb_common_func.GenerateCLIQuery(mainWindow, 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(currently_playing))
File.Delete(currently_playing);
}
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 = hb_common_func.GenerateCLIQuery(mainWindow, 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.RunCli((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 != "")
currently_playing = 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 (currently_playing != "")
{
if (File.Exists(currently_playing))
{
if (File.Exists(Properties.Settings.Default.VLC_Path))
{
String args = "\"" + currently_playing + "\"";
ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);
Process.Start(vlc);
lbl_status.Text = "VLC will now launch.";
}
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);
}
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 = currently_playing;
QTControl.SetSizing(QTSizingModeEnum.qtControlFitsMovie, true);
QTControl.URL = currently_playing;
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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