public virtual void SaveStillBitmap(
string fileName,
StillFormatType format,
int quality,
int flags,
int timeOut
)
Public Overridable Sub SaveStillBitmap( _
ByVal fileName As String, _
ByVal format As StillFormatType, _
ByVal quality As Integer, _
ByVal flags As Integer, _
ByVal timeOut As Integer _
)
public:
virtual void SaveStillBitmap(
String^ fileName,
StillFormatType format,
int quality,
int flags,
int timeOut
)
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:
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:\LEADTOOLS21\Media";
}
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:\LEADTOOLS21\Media"
End Class
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