SaveStillBitmap Method (PlayCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Sub SaveStillBitmap( _
   ByVal fileName As String, _
   ByVal format As StillFormatType, _
   ByVal quality As Integer, _
   ByVal flags As Integer, _
   ByVal timeOut As Integer _
)

'Usage
 
Dim instance As PlayCtrl
Dim fileName As String
Dim format As StillFormatType
Dim quality As Integer
Dim flags As Integer
Dim timeOut As Integer
 
instance.SaveStillBitmap(fileName, format, quality, flags, timeOut)

public virtual void SaveStillBitmap( 
   string fileName,
   StillFormatType format,
   int quality,
   int flags,
   int timeOut
)

public:
virtual void SaveStillBitmap( 
   String^ fileName,
   StillFormatType format,
   int quality,
   int flags,
   int timeOut
)

Parameters

fileName: A string containing the name of the file in which to save the bitmap.
format: A StillFormatType enumeration value that represents the output file format.
quality: Value that represents the compression quality. For a list of possible values, refer to Compression Quality Factors. If and only if the StillFormatType parameter is equal to StillFormatType.CMP, you can use theStillQuality enumeration values .
flags: Reserved for future use. Pass 0.
timeOut: The timeout period in milliseconds. The method will fail if it was not able to take a sample in the specified time. Use -1 to wait indefinitely until a sample is snapped.

This method blocks (does not return) until the timeout occurs or the sample is snapped. The following methods can also be used to obtain still images:

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As PlayCtrlForm = New PlayCtrlForm()
Public _playctrl As PlayCtrl = Nothing
Public _bmpFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_SaveStillBitmap.bmp")
Public Sub SaveStillBitmapExample()
   ' input and output file names
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_ShortSource.avi")

   Try
      ' reference the convert control
      _playctrl = _form.PlayCtrl

      ' set a timer on the form to make the still bitmap
      _form.TestTimer.Interval = 5000
      AddHandler _form.TestTimer.Tick, AddressOf SaveStillBitmap_Helper

      ' add the first video processor for playback
      _playctrl.SelectedVideoProcessors.Add(_playctrl.VideoProcessors(0))

      ' set the source and target files
      _playctrl.SourceFile = inFile

      ' now start the test timer for the still capture
      _form.TestTimer.Start()
   Catch e1 As Exception
      _result = False
   End Try

   ' we'll loop on the state and pump messages for this example.
   ' but you should not need to if running from a Windows Forms application.
   Do While _playctrl.State = PlayState.Running
      Application.DoEvents()
   Loop
End Sub

Public Sub SaveStillBitmap_Helper(ByVal sender As Object, ByVal e As EventArgs)
   ' cancel the timer
   _form.TestTimer.Stop()

   ' try to simulate an error condition
   _playctrl.SaveStillBitmap(_bmpFile, StillFormatType.BMP, 0, 0, -1)

   ' check for the capture file and set the result
   If File.Exists(Path.Combine(Directory.GetCurrentDirectory(), _bmpFile)) Then
      _result = True
   End If

   _playctrl.Stop()
End Sub

Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media"
End Class

using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public PlayCtrlForm _form = new PlayCtrlForm();
public PlayCtrl _playctrl = null;
public string _bmpFile = Path.Combine(LEAD_VARS.MediaDir,"PlayCtrl_SaveStillBitmap.bmp");
public void SaveStillBitmapExample()
{
   // input and output file names
   string inFile =Path.Combine(LEAD_VARS.MediaDir,"PlayCtrl_ShortSource.avi");

   try
   {
      // reference the convert control
      _playctrl = _form.PlayCtrl;

      // set a timer on the form to make the still bitmap
      _form.TestTimer.Interval = 5000;
      _form.TestTimer.Tick += new EventHandler(SaveStillBitmap_Helper);

      // add the first video processor for playback
      _playctrl.SelectedVideoProcessors.Add(_playctrl.VideoProcessors[0]);

      // set the source and target files
      _playctrl.SourceFile = inFile;

      // now start the test timer for the still capture
      _form.TestTimer.Start();
   }
   catch (Exception)
   {
      _result = false;
   }

   // we'll loop on the state and pump messages for this example.
   // but you should not need to if running from a Windows Forms application.
   while (_playctrl.State == PlayState.Running)
      Application.DoEvents();
}

public void SaveStillBitmap_Helper(object sender, EventArgs e)
{
   // cancel the timer
   _form.TestTimer.Stop();

   // try to simulate an error condition
   _playctrl.SaveStillBitmap(_bmpFile, StillFormatType.BMP, 0, 0, -1);

   // check for the capture file and set the result
   if (File.Exists(Path.Combine(Directory.GetCurrentDirectory(), _bmpFile)))
      _result = true;

   _playctrl.Stop();
}

static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media";
}

Target Platforms

Reference

PlayCtrl Class
PlayCtrl Members