RasterYUVFormat Enumeration

Summary

Used with SetYUVData and GetYUVData to specify the YUV data format.

Syntax

Objective-C

C++/CLI

Java

Python

public enum RasterYUVFormat

typedef NS_ENUM(NSInteger, LTRasterYUVFormat) { 
 LTRasterYUVFormatYV12,  
 LTRasterYUVFormatNV12,  
 LTRasterYUVFormatNV21,  
 LTRasterYUVFormatYUY2 
};

public final class RasterYUVFormat 
    extends java.lang.Enum<RasterYUVFormat>

public enum class RasterYUVFormat

class RasterYUVFormat(Enum): 
   YV12 = 0 
   NV12 = 1 
   NV21 = 2 
   YUY2 = 3

Members

Value	Member	Description
0	YV12	Planar Y, U, V data using 4:1:1 (aka 4:2:0) subsampling. The U and V planes are half the width and height of the Y plane. The Y plane is followed immediately by the U (Cb) plane, which is followed immediately by the V (Cr) plane. The YUV data is 12 bits/pixel (each 2x2 pixels are described by 6 bytes). The image width and height must be multiple of 2. The size of the YUV data is width * height * 3 / 2.
1	NV12	A Y plane followed by interleaved plane of UV data. There are half as many U and V samples as Y samples in both width and height. In other words, for each 2x2 square of Y pixels, there is only one corresponding U, V pair. The YUV data is 12 bits/pixel (each 2x2 pixels are described by 6 bytes). The image width and height must be multiple of 2. The size of the YUV data is width * height * 3 / 2.
2	NV21	A Y plane followed by interleaved plane of VU data. Similar to NV12 data, except that the order of UV samples is reversed. The YUV data is 12 bits/pixel (each 2x2 pixels are described by 6 bytes). The image width and height must be multiple of 2. The size of the YUV data is width * height * 3 / 2.
3	YUY2	Interleaved 4:2:2 YUYV data. Each two horizontal pixels have the same U and V values. The YUV data is 16 bits/pixel (each 2 pixels are described by 4 bytes). The image width must be a multiple of 2. The size of the YUV data is width * height * 2.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Dicom; 
using Leadtools.Drawing; 
using Leadtools.Controls; 
using Leadtools.Svg; 
 
 
public void SetYUVDataExample() 
{ 
   string fileName = Path.Combine(LEAD_VARS.ImagesDir, "nv21.bin"); 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      using (RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 1920, 1080, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0)) 
      { 
         using (FileStream yuvFile = File.OpenRead(fileName)) 
         { 
            int size = 1920 * 1080 * 3 / 2; 
 
            Byte[] yuvBuffer = new Byte[size]; 
            yuvFile.Read(yuvBuffer, 0, size); 
 
            image.SetYUVData(yuvBuffer, 0, size, RasterYUVFormat.NV21); 
 
            codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "nv21_net.jpg"), RasterImageFormat.Jpeg, 0); 
 
            Byte[] yuvBuffer2 = new byte[size]; 
            image.GetYUVData(RasterYUVFormat.YV12, yuvBuffer2, 0, yuvBuffer2.Length); 
 
            image.SetYUVData(yuvBuffer2, 0, yuvBuffer2.Length, RasterYUVFormat.YV12); 
 
            codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "nv21_net_2.jpg"), RasterImageFormat.Jpeg, 0); 
 
            System.Diagnostics.Debug.WriteLine("Save succeeded"); 
         } 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

Leadtools Namespace

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Help Version 23.0.2024.5.22

Leadtools Assembly

Introduction

Getting Started

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Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies