Class Image

命名空间

easyar

Image存储了图像数据，用来表示内存中的图像。 Image以字节数组的方式提供了对原始数据的访问，同时也提供了访问width/height等信息的接口。 在EasyAR Sense的所有版本中，你都可以访问图像数据。 在iOS中可以这样访问

#import <easyar/buffer.oc.h>
#import <easyar/image.oc.h>

easyar_OutputFrame * outputFrame = [outputFrameBuffer peek];
if (outputFrame != nil) {
    easyar_Image * i = [[outputFrame inputFrame] image];
    easyar_Buffer * b = [i buffer];
    char * bytes = calloc([b size], 1);
    memcpy(bytes, [b data], [b size]);
    // use bytes here
    free(bytes);
}

在Android里面，

import cn.easyar.*;

OutputFrame outputFrame = outputFrameBuffer.peek();
if (outputFrame != null) {
    InputFrame inputFrame = outputFrame.inputFrame();
    Image i = inputFrame.image();
    Buffer b = i.buffer();
    byte[] bytes = new byte[b.size()];
    b.copyToByteArray(0, bytes, 0, bytes.length);
    // use bytes here
    b.dispose();
    i.dispose();
    inputFrame.dispose();
    outputFrame.dispose();
}

Image

构造函数

Image

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

void easyar_Image__ctor(easyar_Buffer * buffer, easyar_PixelFormat format, int width, int height, easyar_Image * * Return)

Image(std::shared_ptr<Buffer> buffer, PixelFormat format, int width, int height)

public Image(@Nonnull Buffer buffer, int format, int width, int height)

constructor(buffer: Buffer, format: Int, width: Int, height: Int)

+ (easyar_Image *) create:(easyar_Buffer *)buffer format:(easyar_PixelFormat)format width:(int)width height:(int)height

public convenience init(_ buffer: Buffer, _ format: PixelFormat, _ width: Int32, _ height: Int32)

public Image(Buffer buffer, PixelFormat format, int width, int height)

参数

名称	类型	描述
buffer	Buffer
format	PixelFormat
width	Int32
height	Int32

方法

buffer

返回图像中的数据buffer。可以使用 Buffer API访问内部数据。不应对获得的数据 Buffer 的内容进行修改，因为这些内容可能在其他线程被使用。

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

void easyar_Image_buffer(const easyar_Image * This, easyar_Buffer * * Return)

std::shared_ptr<Buffer> buffer()

public @Nonnull Buffer buffer()

fun buffer(): Buffer

- (easyar_Buffer *)buffer

public func buffer() -> Buffer

public virtual Buffer buffer()

返回

类型	描述
Buffer

format

返回图像格式。

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

easyar_PixelFormat easyar_Image_format(const easyar_Image * This)

PixelFormat format()

public int format()

fun format(): Int

- (easyar_PixelFormat)format

public func format() -> PixelFormat

public virtual PixelFormat format()

返回

类型	描述
PixelFormat

width

返回图像宽度。图像数据的右方会有 pixelWidth - width 像素的padding。

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

int easyar_Image_width(const easyar_Image * This)

int width()

public int width()

fun width(): Int

- (int)width

public func width() -> Int32

public virtual int width()

返回

类型	描述
Int32

height

返回图像高度。图像数据的下方会有 pixelHeight - height 像素的padding。

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

int easyar_Image_height(const easyar_Image * This)

int height()

public int height()

fun height(): Int

- (int)height

public func height() -> Int32

public virtual int height()

返回

类型	描述
Int32

pixelWidth

返回图像编码时使用的像素宽度。

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

int easyar_Image_pixelWidth(const easyar_Image * This)

int pixelWidth()

public int pixelWidth()

fun pixelWidth(): Int

- (int)pixelWidth

public func pixelWidth() -> Int32

public virtual int pixelWidth()

返回

类型	描述
Int32

pixelHeight

返回图像编码时使用的像素高度。

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

int easyar_Image_pixelHeight(const easyar_Image * This)

int pixelHeight()

public int pixelHeight()

fun pixelHeight(): Int

- (int)pixelHeight

public func pixelHeight() -> Int32

public virtual int pixelHeight()

返回

类型	描述
Int32

create

• c
• cpp
• java
• kotlin
• objective-c
• swift
• csharp

void easyar_Image_create(easyar_Buffer * buffer, easyar_PixelFormat format, int width, int height, int pixelWidth, int pixelHeight, easyar_Image * * Return)

static std::shared_ptr<Image> create(std::shared_ptr<Buffer> buffer, PixelFormat format, int width, int height, int pixelWidth, int pixelHeight)

public static @Nonnull Image create(@Nonnull Buffer buffer, int format, int width, int height, int pixelWidth, int pixelHeight)

companion object fun create(buffer: Buffer, format: Int, width: Int, height: Int, pixelWidth: Int, pixelHeight: Int): Image

+ (easyar_Image *)create:(easyar_Buffer *)buffer format:(easyar_PixelFormat)format width:(int)width height:(int)height pixelWidth:(int)pixelWidth pixelHeight:(int)pixelHeight

public static func create(_ buffer: Buffer, _ format: PixelFormat, _ width: Int32, _ height: Int32, _ pixelWidth: Int32, _ pixelHeight: Int32) -> Image

public static Image create(Buffer buffer, PixelFormat format, int width, int height, int pixelWidth, int pixelHeight)

参数

名称	类型	描述
buffer	Buffer
format	PixelFormat
width	Int32
height	Int32
pixelWidth	Int32
pixelHeight	Int32

返回

类型	描述
Image