Leadtools.Codecs Namespace > RasterCodecs Class > WriteMarker Method : WriteMarker(String,Int32,RasterMarkerMetadata) Method |
public void WriteMarker( string fileName, int pageNumber, RasterMarkerMetadata marker )
'Declaration Public Overloads Sub WriteMarker( _ ByVal fileName As String, _ ByVal pageNumber As Integer, _ ByVal marker As RasterMarkerMetadata _ )
'Usage Dim instance As RasterCodecs Dim fileName As String Dim pageNumber As Integer Dim marker As RasterMarkerMetadata instance.WriteMarker(fileName, pageNumber, marker)
public void WriteMarker( string fileName, int pageNumber, RasterMarkerMetadata marker )
function Leadtools.Codecs.RasterCodecs.WriteMarker(String,Int32,RasterMarkerMetadata)( fileName , pageNumber , marker )
public: void WriteMarker( String^ fileName, int pageNumber, RasterMarkerMetadata^ marker )
For Exif files, this metadata collection will contain all the Exif and GPS comments, stored in APP1. It will also contain the audio information stored in APP2.
When you add or remove tags, the tags array at the end of the file is re-written. When you modify existing tags, the new tag value is added to the file and the IFD is modified as necessary. In all of these cases, there is no image recompression.
Private Sub MarkersExample(ByVal srcFileName As String, ByVal destFileName As String) Dim codecs As RasterCodecs = New RasterCodecs() ' Load the source image with markers Console.WriteLine("Loading the source image with all markers") codecs.Options.Load.Markers = True Dim srcImage As RasterImage = codecs.Load(srcFileName) ' Show the markers loaded Console.WriteLine("These markers were loaded:") For Each marker As RasterMarkerMetadata In srcImage.Markers Dim data As Byte() = marker.GetData() Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length) Next marker ' Create the destination image Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 320, 20, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, IntPtr.Zero, 0) ' Save this as JPEG codecs.Save(destImage, destFileName, RasterImageFormat.Jpeg, 24) ' Write the markers from the source image to this destination image Console.WriteLine("Writing the markers to the destination file") codecs.WriteMarkers(destFileName, 1, srcImage.Markers) srcImage.Dispose() destImage.Dispose() ' Re-load the destination image with markers Console.WriteLine("Loading the destination image with all markers") codecs.Options.Load.Markers = True destImage = codecs.Load(destFileName) ' Show the markers loaded Console.WriteLine("These markers were loaded:") For Each marker As RasterMarkerMetadata In destImage.Markers Dim data As Byte() = marker.GetData() Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length) Next marker destImage.Dispose() ' Clean up codecs.Dispose() End Sub
void MarkersExample(string srcFileName, string destFileName) { RasterCodecs codecs = new RasterCodecs(); // Load the source image with markers Console.WriteLine("Loading the source image with all markers"); codecs.Options.Load.Markers = true; RasterImage srcImage = codecs.Load(srcFileName); // Show the markers loaded Console.WriteLine("These markers were loaded:"); foreach (RasterMarkerMetadata marker in srcImage.Markers) { byte[] data = marker.GetData(); Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length); } // Create the destination image RasterImage destImage = new RasterImage( RasterMemoryFlags.Conventional, 320, 20, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, IntPtr.Zero, 0); // Save this as JPEG codecs.Save(destImage, destFileName, RasterImageFormat.Jpeg, 24); // Write the markers from the source image to this destination image Console.WriteLine("Writing the markers to the destination file"); codecs.WriteMarkers(destFileName, 1, srcImage.Markers); srcImage.Dispose(); destImage.Dispose(); // Re-load the destination image with markers Console.WriteLine("Loading the destination image with all markers"); codecs.Options.Load.Markers = true; destImage = codecs.Load(destFileName); // Show the markers loaded Console.WriteLine("These markers were loaded:"); foreach (RasterMarkerMetadata marker in destImage.Markers) { byte[] data = marker.GetData(); Console.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length); } destImage.Dispose(); // Clean up codecs.Dispose(); }
RasterCodecsExamples.prototype.MarkersExample = function ( ) { Tools.SetLicense ( ) ; with (Leadtools) { with (Leadtools.Codecs) { var srcFileName = "Assets\\WithAudio.jpg"; var destFileName = "Markers.jpg"; var codecs = new RasterCodecs(); var srcImage; var destImage; var loadFile; var saveFile; return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFileX) { loadFile = loadFileX; return Tools.AppLocalFolder().createFileAsync(destFileName) }) .then(function (saveFileX) { saveFile = saveFileX; // Load the source image with markers console.info("Loading the source image with all markers"); codecs.options.load.markers = true; return codecs.loadAsync(LeadStreamFactory.create(loadFile)) }) .then(function (img) { srcImage = img; // Show the markers loaded console.info("These markers were loaded:"); for (var i = 0; i < srcImage.markers.length; i++) { var marker = srcImage.markers[i]; var data = marker.getData(); console.info(marker.id, " , DataSize:", data.length); } // Create the destination image destImage = new RasterImage( RasterMemoryFlags.conventional, 320, 20, 24, RasterByteOrder.bgr, RasterViewPerspective.topLeft, null); // Save this as JPEG return codecs.saveAsync(destImage, LeadStreamFactory.create(saveFile), RasterImageFormat.jpeg, 24) }) .then(function () { // Write the markers from the source image to this destination image console.info("Writing the markers to the destination file"); //srcImage.Markers. var markers = new Array(srcImage.markers.length); for (var i = 0; i < markers.length; i++) { markers[i] = srcImage.markers[i]; } return codecs.writeMarkersAsync(LeadStreamFactory.create(saveFile), 1, markers) }) .then(function () { srcImage.close(); destImage.close(); // Re-load the destination image with markers console.info("Loading the destination image with all markers"); codecs.options.load.markers = true; return codecs.loadAsync(LeadStreamFactory.create(saveFile)) }) .then(function (img) { destImage = img; // Show the markers loaded console.info("These markers were loaded:"); for (var i = 0; i < destImage.markers.length; i++) { var marker = destImage.markers[i]; var data = marker.getData(); console.info(marker.id, " , DataSize:", data.length); } destImage.close(); // Clean up codecs.close(); }); } } }
async Task MarkersExample(string srcFileName, string destFileName) { RasterCodecs codecs = new RasterCodecs(); StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName); // Load the source image with markers Debug.WriteLine("Loading the source image with all markers"); codecs.Options.Load.Markers = true; RasterImage srcImage = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); // Show the markers loaded Debug.WriteLine("These markers were loaded:"); foreach (RasterMarkerMetadata marker in srcImage.Markers) { byte[] data = marker.GetData(); Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length); } // Create the destination image RasterImage destImage = new RasterImage( RasterMemoryFlags.Conventional, 320, 20, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null); // Save this as JPEG await codecs.SaveAsync(destImage, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 24); // Write the markers from the source image to this destination image Debug.WriteLine("Writing the markers to the destination file"); //srcImage.Markers. IReadOnlyList<RasterMarkerMetadata> readOnlyMarkers = new ReadOnlyCollection<RasterMarkerMetadata>(srcImage.Markers); await codecs.WriteMarkersAsync(LeadStreamFactory.Create(saveFile), 1, readOnlyMarkers); srcImage.Dispose(); destImage.Dispose(); // Re-load the destination image with markers Debug.WriteLine("Loading the destination image with all markers"); codecs.Options.Load.Markers = true; destImage = await codecs.LoadAsync(LeadStreamFactory.Create(saveFile)); // Show the markers loaded Debug.WriteLine("These markers were loaded:"); foreach (RasterMarkerMetadata marker in destImage.Markers) { byte[] data = marker.GetData(); Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length); } destImage.Dispose(); // Clean up codecs.Dispose(); }
void MarkersExample(Stream inStreamExif, Stream outStreamJpg) { RasterCodecs codecs = new RasterCodecs(); // Load the source image with markers Debug.WriteLine("Loading the source image with all markers"); codecs.Options.Load.Markers = true; RasterImage srcImage = codecs.Load(inStreamExif); // Show the markers loaded Debug.WriteLine("These markers were loaded:"); foreach(RasterMarkerMetadata marker in srcImage.Markers) { byte[] data = marker.GetData(); Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length); } // Create the destination image RasterImage destImage = new RasterImage( RasterMemoryFlags.Conventional, 320, 20, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0); // Save this as JPEG codecs.Save(destImage, outStreamJpg, RasterImageFormat.Jpeg, 24); // Write the markers from the source image to this destination image Debug.WriteLine("Writing the markers to the destination file"); codecs.WriteMarkers(outStreamJpg, 1, srcImage.Markers); srcImage.Dispose(); destImage.Dispose(); // Re-load the destination image with markers Debug.WriteLine("Loading the destination image with all markers"); codecs.Options.Load.Markers = true; destImage = codecs.Load(outStreamJpg); // Show the markers loaded Debug.WriteLine("These markers were loaded:"); foreach(RasterMarkerMetadata marker in destImage.Markers) { byte[] data = marker.GetData(); Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length); } destImage.Dispose(); }
Private Sub MarkersExample(ByVal inStreamExif As Stream, ByVal outStreamJpg As Stream)
Dim codecs As RasterCodecs = New RasterCodecs()
' Load the source image with markers
Debug.WriteLine("Loading the source image with all markers")
codecs.Options.Load.Markers = True
Dim srcImage As RasterImage = codecs.Load(inStreamExif)
' Show the markers loaded
Debug.WriteLine("These markers were loaded:")
For Each marker As RasterMarkerMetadata In srcImage.Markers
Dim data As Byte() = marker.GetData()
Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length)
Next marker
' Create the destination image
Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 320, 20, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0)
' Save this as JPEG
codecs.Save(destImage, outStreamJpg, RasterImageFormat.Jpeg, 24)
' Write the markers from the source image to this destination image
Debug.WriteLine("Writing the markers to the destination file")
codecs.WriteMarkers(outStreamJpg, 1, srcImage.Markers)
srcImage.Dispose()
destImage.Dispose()
' Re-load the destination image with markers
Debug.WriteLine("Loading the destination image with all markers")
codecs.Options.Load.Markers = True
destImage = codecs.Load(outStreamJpg)
' Show the markers loaded
Debug.WriteLine("These markers were loaded:")
For Each marker As RasterMarkerMetadata In destImage.Markers
Dim data As Byte() = marker.GetData()
Debug.WriteLine(" {0}, DataSize:{1}", marker.Id, data.Length)
Next marker
destImage.Dispose()
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2