VlcUserControl.cs
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/*****************************************************************************
* VlcUserControl.cs: VlcUserControl partial class definition
*****************************************************************************
* Copyright (C) 2006 Chris Meadowcroft
*
* Authors: Chris Meadowcroft
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
namespace VLanControl
{
[ComVisible(true)]
[ClassInterface(ClassInterfaceType.None)]
public partial class VlcUserControl : UserControl, IPlayer2
{
private bool isPaused;
private NativeLibVlc nativeVlc = new NativeLibVlc();
private bool useMpegVbrOffset;
private bool usingPausedPosition;
private int pausedTime;
private double pausedPosition;
private int shuttleSeconds;
private bool useVlcCrop = false;
private int cropTop;
private int cropBottom;
private int cropLeft;
private int cropRight;
const long SavingPostionTimespan = 5000000L; // .5 seconds in ticks
public VlcUserControl()
{
InitializeComponent();
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
this.nativeVlc.Initialize();
this.innerVlc.Bounds = this.ClientRectangle;
this.nativeVlc.VideoOutput = this.innerVlc;
}
public void DisplayMessage(String message)
{
this.nativeVlc.ShowMessage(message);
}
public Size VideoSize
{
get
{
return this.nativeVlc.VideoSize;
}
}
public void PrecomputeCrop(Size videoSize, int cropLeft, int cropRight, int cropTop, int cropBottom)
{
this.cropTop = cropTop;
this.cropBottom = cropBottom;
this.cropLeft = cropLeft;
this.cropRight = cropRight;
ComputeCrop(videoSize);
}
public bool ComputeCrop()
{
if(!this.useVlcCrop && this.IsHandleCreated && (this.nativeVlc.VideoOutput != null) &&
(this.State != PlayerState.None))
{
Size vidSize = this.nativeVlc.VideoSize;
if(!vidSize.IsEmpty)
{
ComputeCrop(this.nativeVlc.VideoSize);
return true;
}
}
return false;
}
private void ComputeCrop(Size videoSize)
{
Size mySize = ClientSize;
Debug.WriteLine("Video Sizes = " + videoSize.ToString() + ", " + mySize.ToString());
this.topBlocker.Visible = false;
this.bottomBlocker.Visible = false;
this.leftBlocker.Visible = false;
this.rightBlocker.Visible = false;
double myAspect = Convert.ToDouble(mySize.Width) / Convert.ToDouble(mySize.Height);
if((this.cropTop == 0) && (this.cropBottom == 0) && (this.cropLeft == 0) && (this.cropRight == 0))
{
double vlcAspect = Convert.ToDouble(videoSize.Width) / Convert.ToDouble(videoSize.Height);
if(vlcAspect > myAspect)
{
// gray borders on the top and bottom
int perfectHeight = Convert.ToInt32(mySize.Width / vlcAspect);
this.innerVlc.Bounds = new Rectangle(new Point(0, (mySize.Height - perfectHeight) / 2),
new Size(mySize.Width, perfectHeight));
Debug.WriteLine("vlcAspect > myAspect " + this.innerVlc.Bounds.ToString());
}
else
{
// gray borders on the left and right
int perfectWidth = Convert.ToInt32(mySize.Height * vlcAspect);
this.innerVlc.Bounds = new Rectangle(new Point((mySize.Width - perfectWidth) / 2, 0),
new Size(perfectWidth, mySize.Height));
Debug.WriteLine("vlcAspect < myAspect " + this.innerVlc.Bounds.ToString());
}
}
else
{
double realVlcAspect = Convert.ToDouble(videoSize.Width - this.cropRight - this.cropLeft) /
Convert.ToDouble(videoSize.Height - this.cropTop - this.cropBottom);
if(realVlcAspect > myAspect)
{
// gray borders on the top and bottom, and possible blocking panels
// first, position and size the innerVlc as if there was no top or bottom cropping
int videoPixelWidth = videoSize.Width - this.cropRight - this.cropLeft;
double fakeVlcAspect = Convert.ToDouble(videoPixelWidth) / Convert.ToDouble(videoSize.Height);
int perfectHeight = Convert.ToInt32(mySize.Width / fakeVlcAspect);
double widthScaling = Convert.ToDouble(mySize.Width) / Convert.ToDouble(videoPixelWidth);
int innerVlcLeft = -Convert.ToInt32(Convert.ToDouble(this.cropLeft) * widthScaling);
int innerVlcWidth = Convert.ToInt32(Convert.ToDouble(videoSize.Width) * widthScaling);
int videoTop = (mySize.Height - perfectHeight) / 2;
this.innerVlc.Bounds = new Rectangle(new Point(innerVlcLeft, videoTop),
new Size(innerVlcWidth, perfectHeight));
// then, add blocking panels if necessary for the top and bottom cropping
if(this.cropTop != 0)
{
double heightScaling = Convert.ToDouble(perfectHeight) / Convert.ToDouble(videoSize.Height);
int blockerHeight = Convert.ToInt32(Convert.ToDouble(this.cropTop) * heightScaling);
this.topBlocker.Bounds = new Rectangle(
new Point(0, videoTop),
new Size(mySize.Width, blockerHeight));
this.topBlocker.Visible = true;
}
if(this.cropBottom != 0)
{
double heightScaling = Convert.ToDouble(perfectHeight) / Convert.ToDouble(videoSize.Height);
int blockerHeight = Convert.ToInt32(Convert.ToDouble(this.cropBottom) * heightScaling);
this.bottomBlocker.Bounds = new Rectangle(
new Point(0, mySize.Height - videoTop - blockerHeight),
new Size(mySize.Width, blockerHeight));
this.bottomBlocker.Visible = true;
}
}
else
{
// gray borders on the left and right, and possible blocking panels
// first, position and size the innerVlc as if there was no left or right cropping
int videoPixelHeight = videoSize.Height - this.cropBottom - this.cropTop;
double fakeVlcAspect = Convert.ToDouble(videoSize.Width) / Convert.ToDouble(videoPixelHeight);
int perfectWidth = Convert.ToInt32(mySize.Height * fakeVlcAspect);
double heightScaling = Convert.ToDouble(mySize.Height) / Convert.ToDouble(videoPixelHeight);
int innerVlcTop = -Convert.ToInt32(Convert.ToDouble(this.cropTop) * heightScaling);
int innerVlcHeight = Convert.ToInt32(Convert.ToDouble(videoSize.Height) * heightScaling);
int videoWidth = (mySize.Width - perfectWidth) / 2;
this.innerVlc.Bounds = new Rectangle(new Point(videoWidth, innerVlcTop),
new Size(perfectWidth, innerVlcHeight));
// then, add blocking panels if necessary for the left and right cropping
if(this.cropLeft != 0)
{
double widthScaling = Convert.ToDouble(perfectWidth) / Convert.ToDouble(videoSize.Width);
int blockerWidth = Convert.ToInt32(Convert.ToDouble(this.cropLeft) * widthScaling);
this.leftBlocker.Bounds = new Rectangle(
new Point(videoWidth, 0),
new Size(blockerWidth, mySize.Height));
this.leftBlocker.Visible = true;
}
if(this.cropRight != 0)
{
double widthScaling = Convert.ToDouble(perfectWidth) / Convert.ToDouble(videoSize.Width);
int blockerWidth = Convert.ToInt32(Convert.ToDouble(this.cropRight) * widthScaling);
this.rightBlocker.Bounds = new Rectangle(
new Point(mySize.Width - videoWidth - blockerWidth, 0),
new Size(blockerWidth, mySize.Height));
this.rightBlocker.Visible = true;
}
}
}
}
public bool SetConfigVariable(String name, String value)
{
return this.nativeVlc.SetConfigVariable(name, value) == VlcError.Success;
}
public int Time
{
get
{
try
{
return this.nativeVlc.Time;
}
catch(Exception)
{
return 0;
}
}
}
public double Position
{
get
{
return this.nativeVlc.Position;
}
}
public void MoveToPosition(TrackPosition newTrackPosition)
{
if((newTrackPosition.position >= 0.0d) && (newTrackPosition.position < 1.0d))
{
this.nativeVlc.Position = newTrackPosition.position;
if(this.IsPaused)
{
this.usingPausedPosition = true;
this.pausedTime = newTrackPosition.time;
this.pausedPosition = newTrackPosition.position;
this.shuttleSeconds = 0;
}
}
}
private TrackPosition CalculateShuttle(int origTime, double origPosition, int offsetSeconds)
{
int newTime = origTime + offsetSeconds;
double positionPerTime;
if(origPosition > .5d)
{
positionPerTime = origPosition / Convert.ToDouble(origTime);
}
else
{
positionPerTime = (1.0d - origPosition) /
Convert.ToDouble(this.nativeVlc.Length - origTime);
}
double newPosition = origPosition + Convert.ToDouble(offsetSeconds) * positionPerTime;
Debug.WriteLine(String.Format("CalculateShuttle time={0} pos={1}", newTime, newPosition));
return new TrackPosition(newTime, newPosition);
}
public TrackPosition Shuttle(int offsetSeconds)
{
if(!this.IsPaused)
{
TrackPosition newPosition = CalculateShuttle(this.nativeVlc.Time, this.nativeVlc.Position,
offsetSeconds);
if(this.useMpegVbrOffset)
{
this.nativeVlc.Position = newPosition.position;
}
else
{
this.nativeVlc.Time = newPosition.time;
}
return newPosition;
}
if(!this.usingPausedPosition)
{
this.usingPausedPosition = true;
this.pausedTime = this.nativeVlc.Time;
this.pausedPosition = this.nativeVlc.Position;
this.shuttleSeconds = 0;
}
this.shuttleSeconds += offsetSeconds;
return CalculateShuttle(this.pausedTime, this.pausedPosition, this.shuttleSeconds);
}
public int Volume
{
get
{
return this.nativeVlc.Volume;
}
set
{
this.nativeVlc.Volume = value;
}
}
const int MinRate = -2;
const int MaxRate = 2;
const int NormalRate = 0;
public void GetRates(out int minRate, out int maxRate, out int normalRate)
{
minRate = MinRate;
maxRate = MaxRate;
normalRate = NormalRate;
}
public int Rate
{
get
{
// 1000 is normal, 2000 is half speed, 500 is double speed, etc.
int bigRate = this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "rate", 1000);
if(bigRate > 3000)
{
return -2;
}
if(bigRate > 1500)
{
return -1;
}
if(bigRate > 750)
{
return 0;
}
if(bigRate > 400)
{
return 1;
}
return 2;
}
set
{
int newRate = NormalRate;
switch(value)
{
case 2:
newRate = 250;
break;
case 1:
newRate = 500;
break;
case 0:
newRate = 1000;
break;
case -1:
newRate = 2000;
break;
case -2:
newRate = 4000;
break;
default:
throw new ArgumentOutOfRangeException();
}
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "rate", newRate);
}
}
public int Length
{
get
{
try
{
return this.nativeVlc.Length;
}
catch(Exception)
{
return -1;
}
}
set
{
this.nativeVlc.SetArtificialLength(value);
}
}
public double TimeScaling
{
get { return this.nativeVlc.TimeScaling; }
set { this.nativeVlc.TimeScaling = value; }
}
public PlayerState State
{
get
{
int state = this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT,
"state", (int)InputState.INIT_S);
switch((InputState)state)
{
case InputState.PAUSE_S:
return PlayerState.Paused;
case InputState.PLAYING_S:
return PlayerState.Playing;
default:
return PlayerState.None;
}
}
}
public bool IsPlaying { get { return this.State == PlayerState.Playing; } }
public bool IsPaused { get { return this.State == PlayerState.Paused; } }
public bool IsMute { get { return (this.nativeVlc.Volume == 0); } }
public void ToggleMute()
{
this.nativeVlc.ToggleVolumeMute();
}
public void DeinterlaceModes(out String[] choices, out String[] choiceText)
{
this.nativeVlc.GetVlcVariableChoiceList(ObjectType.VLC_OBJECT_VOUT,
"deinterlace", out choices, out choiceText);
}
public String DeinterlaceMode
{
get
{
return this.nativeVlc.GetVlcObjectString(ObjectType.VLC_OBJECT_VOUT, "deinterlace", String.Empty);
}
set
{
this.nativeVlc.SetVlcObjectString(ObjectType.VLC_OBJECT_VOUT, "deinterlace", value);
}
}
public void AspectRatios(out String[] choices, out String[] choiceText)
{
this.nativeVlc.GetVlcVariableChoiceList(ObjectType.VLC_OBJECT_VOUT,
"aspect-ratio", out choices, out choiceText);
}
public String AspectRatio
{
get
{
return this.nativeVlc.GetVlcObjectString(ObjectType.VLC_OBJECT_VOUT, "aspect-ratio", String.Empty);
}
set
{
this.nativeVlc.SetVlcObjectString(ObjectType.VLC_OBJECT_VOUT, "aspect-ratio", value);
}
}
public void CropModes(out String[] choices, out String[] choiceText)
{
this.nativeVlc.GetVlcVariableChoiceList(ObjectType.VLC_OBJECT_VOUT,
"crop", out choices, out choiceText);
}
public String CropMode
{
get
{
return this.nativeVlc.GetVlcObjectString(ObjectType.VLC_OBJECT_VOUT, "crop", String.Empty);
}
set
{
this.nativeVlc.SetVlcObjectString(ObjectType.VLC_OBJECT_VOUT, "crop", value);
}
}
public int CroppingLeft
{
get
{
if(this.useVlcCrop)
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-left", 0);
}
else
{
return this.cropLeft;
}
}
set
{
if(this.useVlcCrop)
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-left", value);
}
else
{
this.cropLeft = value;
ComputeCrop();
}
}
}
public int CroppingRight
{
get
{
if(this.useVlcCrop)
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-right", 0);
}
else
{
return this.cropRight;
}
}
set
{
if(this.useVlcCrop)
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-right", value);
}
else
{
this.cropRight = value;
ComputeCrop();
}
}
}
public int CroppingTop
{
get
{
if(this.useVlcCrop)
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-top", 0);
}
else
{
return this.cropTop;
}
}
set
{
if(this.useVlcCrop)
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-top", value);
}
else
{
this.cropTop = value;
ComputeCrop();
}
}
}
public int CroppingBottom
{
get
{
if(this.useVlcCrop)
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-bottom", 0);
}
else
{
return this.cropBottom;
}
}
set
{
if(this.useVlcCrop)
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_VOUT, "crop-bottom", value);
}
else
{
this.cropBottom = value;
ComputeCrop();
}
}
}
public void AudioTracks(out int[] trackIds, out String[] trackNames)
{
this.nativeVlc.GetVlcVariableChoiceList(ObjectType.VLC_OBJECT_INPUT,
"audio-es", out trackIds, out trackNames);
}
public int AudioTrack
{
get
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "audio-es", -1);
}
set
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "audio-es", value);
}
}
public void SubTitleTracks(out int[] trackIds, out String[] trackNames)
{
this.nativeVlc.GetVlcVariableChoiceList(ObjectType.VLC_OBJECT_INPUT,
"spu-es", out trackIds, out trackNames);
}
public int SubTitleTrack
{
get
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "spu-es", -1);
}
set
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "spu-es", value);
}
}
public void Programs(out int[] trackIds, out String[] trackNames)
{
this.nativeVlc.GetVlcVariableChoiceList(ObjectType.VLC_OBJECT_INPUT,
"program", out trackIds, out trackNames);
}
public int Program
{
get
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "program", -1);
}
set
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "program", value);
}
}
public void RotateCropModes()
{
this.nativeVlc.PressKey("key-crop");
}
public int AudioDelay
{
get
{
long delay = this.nativeVlc.GetVlcObjectLong(ObjectType.VLC_OBJECT_INPUT, "audio-delay", 0L);
return Convert.ToInt32(delay / 1000L);
}
set
{
long delay = Convert.ToInt64(value) * 1000L;
this.nativeVlc.SetVlcObjectLong(ObjectType.VLC_OBJECT_INPUT, "audio-delay", delay);
}
}
public int SubTitleDelay
{
get
{
long delay = this.nativeVlc.GetVlcObjectLong(ObjectType.VLC_OBJECT_INPUT, "spu-delay", 0L);
return Convert.ToInt32(delay / 1000L);
}
set
{
long delay = Convert.ToInt64(value) * 1000L;
this.nativeVlc.SetVlcObjectLong(ObjectType.VLC_OBJECT_INPUT, "spu-delay", delay);
}
}
public int ChapterCount
{
get
{
int[] chapterIds;
String[] chapterText;
this.nativeVlc.GetVlcVariableChoiceList(ObjectType.VLC_OBJECT_INPUT,
"chapter", out chapterIds, out chapterText);
return (chapterIds.Length > 0) ? chapterIds.Length - 1 : 0;
}
}
public int Chapter
{
get
{
return this.nativeVlc.GetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "chapter", -1);
}
set
{
this.nativeVlc.SetVlcObjectInt(ObjectType.VLC_OBJECT_INPUT, "chapter", value);
}
}
private void RepositionAfterPause()
{
if(this.usingPausedPosition && (this.shuttleSeconds != 0))
{
TrackPosition newPosition = CalculateShuttle(this.pausedTime, this.pausedPosition,
this.shuttleSeconds);
if(this.useMpegVbrOffset)
{
this.nativeVlc.Position = newPosition.position;
}
else
{
this.nativeVlc.Time = newPosition.time;
}
}
this.usingPausedPosition = false;
}
public void Play()
{
this.isPaused = false;
this.nativeVlc.Play();
RepositionAfterPause();
}
public void ClearPlayList()
{
this.usingPausedPosition = false;
//Debug.WriteLine("ClearPlayList");
this.nativeVlc.PlaylistClear();
}
public int AddToPlayList(String fileName, String title, String[] options)
{
this.usingPausedPosition = false;
int index = 0;
this.nativeVlc.AddTarget(fileName, options, ref index);
Debug.WriteLine("Added to Playlist " + fileName);
Debug.WriteLine("index = " + index.ToString());
return index;
}
public void PlayItem(int itemId)
{
this.usingPausedPosition = false;
this.isPaused = false;
int currentIndex = this.nativeVlc.PlaylistIndex;
Debug.WriteLine("PlayItem index = " + itemId.ToString(), " currentIndex = " + currentIndex.ToString());
if(currentIndex < 0)
{
this.nativeVlc.Play();
}
else
{
//this.nativeVlc.PlaylistPrevious();
this.nativeVlc.Play(itemId);
}
}
public void Stop()
{
this.usingPausedPosition = false;
this.nativeVlc.Stop();
this.isPaused = false;
}
public void TogglePause()
{
bool wasPaused = this.IsPaused;
this.nativeVlc.Pause();
if(wasPaused)
{
RepositionAfterPause();
}
this.isPaused = !wasPaused;
}
public void RotateSubtitles()
{
this.nativeVlc.PressKey("key-subtitle-track");
}
public void RotateAudioTrack()
{
this.nativeVlc.PressKey("key-audio-track");
}
public void RotateDeinterlaceMode()
{
this.nativeVlc.PressKey("key-deinterlace");
}
public void RotateAspectRatio()
{
this.nativeVlc.PressKey("key-aspect-ratio");
}
public void CropTop()
{
//this.nativeVlc.PressKey("key-crop-top");
this.CroppingTop = this.CroppingTop + 1;
}
public void UnCropTop()
{
//this.nativeVlc.PressKey("key-uncrop-top");
int crop = this.CroppingTop - 1;
if(crop >= 0)
{
this.CroppingTop = crop;
}
}
public void CropBottom()
{
//this.nativeVlc.PressKey("key-crop-bottom");
this.CroppingBottom = this.CroppingBottom + 1;
}
public void UnCropBottom()
{
//this.nativeVlc.PressKey("key-uncrop-bottom");
int crop = this.CroppingBottom - 1;
if(crop >= 0)
{
this.CroppingBottom = crop;
}
}
public void CropLeft()
{
//this.nativeVlc.PressKey("key-crop-left");
this.CroppingLeft = this.CroppingLeft + 1;
}
public void UnCropLeft()
{
//this.nativeVlc.PressKey("key-uncrop-left");
int crop = this.CroppingLeft - 1;
if(crop >= 0)
{
this.CroppingLeft = crop;
}
}
public void CropRight()
{
//this.nativeVlc.PressKey("key-crop-right");
this.CroppingRight = this.CroppingRight + 1;
}
public void UnCropRight()
{
//this.nativeVlc.PressKey("key-uncrop-right");
int crop = this.CroppingRight - 1;
if(crop >= 0)
{
this.CroppingRight = crop;
}
}
public bool UseMpegVbrOffset
{
get { return this.useMpegVbrOffset; }
set { this.useMpegVbrOffset = value; }
}
public void NextDvdTrack()
{
this.nativeVlc.PressKey("key-title-next");
}
public void PreviousDvdTrack()
{
this.nativeVlc.PressKey("key-title-prev");
}
public void NextDvdChapter()
{
this.nativeVlc.PressKey("key-chapter-next");
}
public void PreviousDvdChapter()
{
this.nativeVlc.PressKey("key-chapter-prev");
}
private void VlcUserControl_Resize(object sender, EventArgs e)
{
if(!ComputeCrop())
{
this.innerVlc.Bounds = this.ClientRectangle;
}
}
}
}
