Leadtools.ImageOptimization Namespace > ImageOptimizer Class > OptimizeBuffer Method : OptimizeBuffer(RasterCodecs,Byte[],Int32,Int32,ImageOptimizerOptions,ImageOptimizerProgress) Method |
public byte[] OptimizeBuffer( RasterCodecs codecs, byte[] buffer, int offset, int length, ImageOptimizerOptions options, ImageOptimizerProgress progressCallback )
'Declaration Public Overloads Function OptimizeBuffer( _ ByVal codecs As RasterCodecs, _ ByVal buffer() As Byte, _ ByVal offset As Integer, _ ByVal length As Integer, _ ByVal options As ImageOptimizerOptions, _ ByVal progressCallback As ImageOptimizerProgress _ ) As Byte()
'Usage Dim instance As ImageOptimizer Dim codecs As RasterCodecs Dim buffer() As Byte Dim offset As Integer Dim length As Integer Dim options As ImageOptimizerOptions Dim progressCallback As ImageOptimizerProgress Dim value() As Byte value = instance.OptimizeBuffer(codecs, buffer, offset, length, options, progressCallback)
public: array<byte>^ OptimizeBuffer( RasterCodecs^ codecs, array<byte>^ buffer, int offset, int length, ImageOptimizerOptions options, ImageOptimizerProgress^ progressCallback )
For more information, refer to Image Optimization Using The ImageOptimizer Class.
Imports Leadtools Imports Leadtools.Codecs Imports Leadtools.ImageOptimization Imports Leadtools.Support.Examples Public Sub TestJpegImageOptimizer() ' Initialize the RasterCodecs class Dim codecs As RasterCodecs = New RasterCodecs() ' The input and output location Dim inputFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg") Dim outputFolder As String = Path.Combine(LEAD_VARS.ImagesDir, "OptimizedImages") ' Initialize a new Optimizer object Dim optimizer As ImageOptimizer = New ImageOptimizer() ' Optimization Options Dim options As ImageOptimizerOptions = ImageOptimizerOptions.Default ' Set custom optimization options options.JpegQualityFactor = 255 options.JpegColorSpace = ImageOptimizerJpegColorSpace.JpegColorSpace422 ' Load the input file into a memory byte array Dim orgBuffer() As Byte = File.ReadAllBytes(inputFileName) ' Optimize this buffer Dim optBuffer() As Byte = optimizer.OptimizeBuffer(codecs, orgBuffer, 0, 0, options, AddressOf OptimizeBufferProgress) ' Save this image into the output folder ' Make sure the output folder exists If (Not Directory.Exists(outputFolder)) Then Directory.CreateDirectory(outputFolder) End If ' Get the name of the output file from the input file Dim outputFileName As String = Path.Combine(outputFolder, Path.GetFileName(inputFileName)) ' Save the optimized buffer to the output file Using fs As FileStream = File.Create(outputFileName) fs.Write(optBuffer, 0, optBuffer.Length) End Using ' Compare the original image size with the optimized size Dim orgSize As Long = New FileInfo(inputFileName).Length Dim optSize As Long = New FileInfo(outputFileName).Length Dim percentage As Integer = CType(CType(optSize * 100.0 / orgSize, Double), Integer) Dim message As String = String.Format( _ "Original image size: {0} KB{1}Optimized image size: {2} KB{1}Percentage: {3}%", _ orgSize / 1024, Environment.NewLine, optSize / 1024, _ 100 - percentage) MessageBox.Show(message) 'shutdown the RasterCodecs class. End Sub Public Shared Function OptimizeBufferProgress(ByVal percent As Integer) As Boolean 'Console.WriteLine(String.Format("{0}%", percent)) Return True End Function Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
using Leadtools; using Leadtools.Codecs; using Leadtools.ImageOptimization; public void TestJpegImageOptimizer( ) { // Initialize the RasterCodecs class RasterCodecs codecs = new RasterCodecs(); // The input and output location string inputFileName = Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg"); string outputFolder = Path.Combine(LEAD_VARS.ImagesDir, "OptimizedImages"); // Initialize a new Optimizer object ImageOptimizer optimizer = new ImageOptimizer(); // Optimization Options ImageOptimizerOptions options = ImageOptimizerOptions.Default; // Set custom optimization options options.JpegQualityFactor = 255; options.JpegColorSpace = ImageOptimizerJpegColorSpace.JpegColorSpace422; // Load the input file into a memory byte array byte[] orgBuffer = File.ReadAllBytes(inputFileName); // Optimize this buffer byte[] optBuffer = optimizer.OptimizeBuffer(codecs, orgBuffer, 0, orgBuffer.Length, options, OptimizeBufferProgress); // Save this image into the output folder // Make sure the output folder exists if(!Directory.Exists(outputFolder)) Directory.CreateDirectory(outputFolder); // Get the name of the output file from the input file string outputFileName = Path.Combine(outputFolder, Path.GetFileName(inputFileName)); // Save the optimized buffer to the output file using(FileStream fs = File.Create(outputFileName)) fs.Write(optBuffer, 0, optBuffer.Length); // Compare the original image size with the optimized size long orgSize = new FileInfo(inputFileName).Length; long optSize = new FileInfo(outputFileName).Length; int percentage = (int)((double)optSize * 100.0 / orgSize); string message = string.Format( "Original image size: {0} KB{1}Optimized image size: {2} KB{1}Percentage: {3}%", orgSize / 1024, Environment.NewLine, optSize / 1024, 100 - percentage); MessageBox.Show(message); //shutdown the RasterCodecs class. } static bool OptimizeBufferProgress(int percent) { Console.WriteLine(string.Format("{0}%", percent)); return true; } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }