# @ohos.multimedia.sendableImage (Image Processing Based on Sendable Objects)

The **sendableImage** module provides APIs for image processing based on sendable objects. You can use the APIs to create a **PixelMap** object with specified properties or read pixels of an image (or even in a region of an image).

> **NOTE**
>
> The initial APIs of this module are supported since API version 12. Newly added APIs will be marked with a superscript to indicate their earliest API version.

## Modules to Import

```ts
import { sendableImage } from '@kit.ImageKit';
```

## sendableImage.createPixelMap

createPixelMap(colors: ArrayBuffer, options: image.InitializationOptions): Promise\<PixelMap>

Creates a **PixelMap** object with the default BGRA_8888 format and specified pixel properties. This API uses a promise to return the result.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name | Type                                            | Mandatory| Description                                                            |
| ------- | ------------------------------------------------ | ---- | ---------------------------------------------------------------- |
| colors  | ArrayBuffer                                      | Yes  | Color array in BGRA_8888 format.                                       |
| options | [InitializationOptions](js-apis-image.md#initializationoptions8) | Yes  | Pixel properties, including the alpha type, size, scale mode, pixel format, and editable.|

**Return value**

| Type                            | Description                                                                   |
| -------------------------------- | ----------------------------------------------------------------------- |
| Promise\<[PixelMap](#pixelmap)> | Promise used to return the **PixelMap** object.<br>If the size of the created PixelMap exceeds that of the original image, the PixelMap size of the original image is returned.|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const color: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    let opts: image.InitializationOptions = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
    sendableImage.createPixelMap(color, opts).then((pixelMap: sendableImage.PixelMap) => {
        console.info('Succeeded in creating pixelmap.');
    }).catch((error: BusinessError) => {
        console.error(`Failed to create pixelmap. code is ${error.code}, message is ${error.message}`);
    })
}
```

## sendableImage.createPixelMapFromParcel

createPixelMapFromParcel(sequence: rpc.MessageSequence): PixelMap

Creates a **PixelMap** object from a **MessageSequence** object.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name                | Type                                                 | Mandatory| Description                                    |
| ---------------------- | ----------------------------------------------------- | ---- | ---------------------------------------- |
| sequence               | [rpc.MessageSequence](../apis-ipc-kit/js-apis-rpc.md#messagesequence9) | Yes  | **MessageSequence** object that stores the **PixelMap** information.     |

**Return value**

| Type                            | Description                 |
| -------------------------------- | --------------------- |
| [PixelMap](#pixelmap) | Returns a **PixelMap** object if the operation is successful; throws an error otherwise.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
| 62980096 | If the operation failed|
| 62980097 | If the ipc error|
| 62980115 | Invalid input parameter|
| 62980105 | Failed to get the data|
| 62980177 | Abnormal API environment|
| 62980178 | Failed to create the PixelMap|
| 62980179 | Abnormal buffer size|
| 62980180 | FD mapping failed|
| 62980246 | Failed to read the PixelMap|

**Example**

```ts
import { sendableImage } from '@kit.ImageKit';
import { image } from '@kit.ImageKit';
import { rpc } from '@kit.IPCKit';
import { BusinessError } from '@kit.BasicServicesKit';

class MySequence implements rpc.Parcelable {
    pixel_map: sendableImage.PixelMap;
    constructor(conPixelmap: sendableImage.PixelMap) {
        this.pixel_map = conPixelmap;
    }
    marshalling(messageSequence: rpc.MessageSequence) {
        this.pixel_map.marshalling(messageSequence);
        return true;
    }
    unmarshalling(messageSequence: rpc.MessageSequence) {
        try {
            this.pixel_map = sendableImage.createPixelMapFromParcel(messageSequence);
        } catch(e) {
            let error = e as BusinessError;
            console.error(`createPixelMapFromParcel error. code is ${error.code}, message is ${error.message}`);
            return false;
        }
      return true;
    }
}
async function Demo() {
   const color: ArrayBuffer = new ArrayBuffer(96);
   let bufferArr: Uint8Array = new Uint8Array(color);
   for (let i = 0; i < bufferArr.length; i++) {
      bufferArr[i] = 0x80;
   }
   let opts: image.InitializationOptions = {
      editable: true,
      pixelFormat: 4,
      size: { height: 4, width: 6 },
      alphaType: 3
   }
   let pixelMap: image.PixelMap | undefined = undefined;
   sendableImage.createPixelMap(color, opts).then((srcPixelMap: image.PixelMap) => {
      pixelMap = srcPixelMap;
   })
   if (pixelMap != undefined) {
     // Implement serialization.
     let parcelable: MySequence = new MySequence(pixelMap);
     let data: rpc.MessageSequence = rpc.MessageSequence.create();
     data.writeParcelable(parcelable);

     // Implement deserialization to obtain data through the RPC.
     let ret: MySequence = new MySequence(pixelMap);
     data.readParcelable(ret);

     // Obtain the PixelMap object.
     let unmarshPixelmap = ret.pixel_map;
   }
}
```

## sendableImage.createPixelMapFromSurface

createPixelMapFromSurface(surfaceId: string, region: image.Region): Promise\<PixelMap>

Creates a **PixelMap** object from a surface ID.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name                | Type                | Mandatory| Description                                    |
| ---------------------- | -------------       | ---- | ---------------------------------------- |
| surfaceId              | string              | Yes  | Surface ID, which is obtained from [XComponent](../apis-arkui/arkui-ts/ts-basic-components-xcomponent.md).|
| region                 | [Region](../apis-image-kit/js-apis-image.md#region8)  | Yes  | Size of the image after cropping.                        |

**Return value**
| Type                            | Description                 |
| -------------------------------- | --------------------- |
| Promise\<[PixelMap](#pixelmap)> | Returns a **PixelMap** object if the operation is successful; throws an error otherwise.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
| 62980115 | Invalid input parameter|
| 62980105 | Failed to get the data|
| 62980178 | Failed to create the PixelMap|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo(surfaceId: string) {
    let region: image.Region = { x: 0, y: 0, size: { height: 100, width: 100 } };
    sendableImage.createPixelMapFromSurface(surfaceId, region).then(() => {
        console.info('Succeeded in creating pixelmap from Surface');
    }).catch((error: BusinessError) => {
        console.error(`Failed to create pixelmap. code is ${error.code}, message is ${error.message}`);
    });
}
```

## sendableImage.createPixelMapSync

createPixelMapSync(colors: ArrayBuffer, options: image.InitializationOptions): PixelMap

Creates a **PixelMap** object with the specified pixel properties. This API returns the result synchronously.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name | Type                                            | Mandatory| Description                                                            |
| ------- | ------------------------------------------------ | ---- | ---------------------------------------------------------------- |
| colors  | ArrayBuffer                                      | Yes  | Color array in BGRA_8888 format.                                       |
| options | [InitializationOptions](js-apis-image.md#initializationoptions8) | Yes  | Pixel properties, including the alpha type, size, scale mode, pixel format, and editable.|

**Return value**
| Type                            | Description                 |
| -------------------------------- | --------------------- |
| [PixelMap](#pixelmap) | Returns a **PixelMap** object if the operation is successful; throws an error otherwise.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const color: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    let opts: image.InitializationOptions = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
    let pixelMap : sendableImage.PixelMap = sendableImage.createPixelMapSync(color, opts);
    return pixelMap;
}
```

## sendableImage.convertFromPixelMap

convertFromPixelMap(pixelMap: image.PixelMap): PixelMap

Creates a **PixelMap** object under **sendableImage** from a **PixelMap** object under **image**. This API returns the result synchronously. The APIs of the **PixelMap** object under **image** cannot be called any more.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name | Type                                            | Mandatory| Description                                                            |
| ------- | ------------------------------------------------ | ---- | ---------------------------------------------------------------- |
| pixelMap | [image.PixelMap](js-apis-image.md#pixelmap7) | Yes  | **PixelMap** object under **image**.|

**Return value**
| Type                            | Description                 |
| -------------------------------- | --------------------- |
| [PixelMap](#pixelmap) | Returns a **PixelMap** object, which is sendable, if the operation is successful; throws an error otherwise.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const color: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    let opts: image.InitializationOptions = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
    let pixelMap : image.PixelMap = image.createPixelMapSync(color, opts);
    let sendablePixelMap : sendableImage.PixelMap = sendableImage.convertFromPixelMap(pixelMap);
    return sendablePixelMap;
}
```

## sendableImage.convertToPixelMap

convertToPixelMap(pixelMap: PixelMap): image.PixelMap

Creates a **PixelMap** object under **image** from a **PixelMap** object under **sendableImage**. This API returns the result synchronously. The APIs of the **PixelMap** object under **sendableImage** cannot be called any more.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name | Type                                            | Mandatory| Description                                                            |
| ------- | ------------------------------------------------ | ---- | ---------------------------------------------------------------- |
| pixelMap | [PixelMap](#pixelmap) | Yes  | PixelMap object under **sendableImage**.|

**Return value**
| Type                            | Description                 |
| -------------------------------- | --------------------- |
| [PixelMap](js-apis-image.md#pixelmap7) | Returns a **PixelMap** object, which is not sendable, if the operation is successful; throws an error otherwise.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const color: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    let opts: image.InitializationOptions = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
    let sendablePixelMap : sendableImage.PixelMap = sendableImage.createPixelMapSync(color, opts);
    let pixelMap : image.PixelMap = sendableImage.convertToPixelMap(sendablePixelMap);
    return pixelMap;
}
```

## PixelMap

Provides APIs to read or write image data and obtain image information. Before calling any API in **PixelMap**, you must use [createPixelMap](#sendableimagecreatepixelmap) to create a **PixelMap** object. Currently, the maximum size of a serialized PixelMap is 128 MB. A larger size will cause a display failure. The size is calculated as follows: Width * Height * Number of bytes occupied by each pixel.

The **PixelMap** object under **sendableImage** supports the **sendable** attribute and sharing of the worker thread. The [Convert](#sendableimageconverttopixelmap) API can be used to convert a **PixelMap** object in **sendableImage** to a **PixelMap** object in **image**, and vise versa. After the conversion, the APIs of the original object cannot be called. Otherwise, error 501 is reported. When processing a **PixelMap** object across threads, you need to consider the multithreaded problem.

Before calling any API in **PixelMap**, you must use [sendableImage.createPixelMap](#sendableimagecreatepixelmap) to create a **PixelMap** object.

### Attributes

**System capability**: SystemCapability.Multimedia.Image.Core

| Name             | Type   | Readable| Writable| Description                      |
| -----------------| ------- | ---- | ---- | -------------------------- |
| isEditable        | boolean | Yes  | No  | Whether the pixels of an image are editable.<br>**Atomic service API**: This API can be used in atomic services since API version 12.|
| isStrideAlignment | boolean | Yes  | No  | Whether the image memory is the DMA memory. In the case of DMA, a 256-byte alignment is carried out, which means that a padding area exists at the end of the line.|

### readPixelsToBuffer

readPixelsToBuffer(dst: ArrayBuffer): Promise\<void>

Reads the pixels of this image and writes the data to an ArrayBuffer. This API uses a promise to return the result. If the PixelMap is created in the BGRA_8888 format, the data read is the same as the original data.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type       | Mandatory| Description                                                                                                 |
| ------ | ----------- | ---- | ----------------------------------------------------------------------------------------------------- |
| dst    | ArrayBuffer | Yes  | Buffer to which the pixels will be written. The buffer size is obtained by calling [getPixelBytesNumber](#getpixelbytesnumber).|

**Return value**

| Type          | Description                                           |
| -------------- | ----------------------------------------------- |
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const readBuffer: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    if (pixelMap != undefined) {
        pixelMap.readPixelsToBuffer(readBuffer).then(() => {
            console.info('Succeeded in reading image pixel data.'); // Called if the condition is met.
        }).catch((error: BusinessError) => {
            console.error(`Failed to read image pixel data. code is ${error.code}, message is ${error.message}`); // Called if no condition is met.
        })
    }
}
```

### readPixelsToBufferSync

readPixelsToBufferSync(dst: ArrayBuffer): void

Reads the pixels of this image and writes the data to an ArrayBuffer. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name  | Type                | Mandatory| Description                                                                                                 |
| -------- | -------------------- | ---- | ----------------------------------------------------------------------------------------------------- |
| dst      | ArrayBuffer          | Yes  | Buffer to which the pixels will be written. The buffer size is obtained by calling [getPixelBytesNumber](#getpixelbytesnumber).|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const readBuffer: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    if (pixelMap != undefined) {
        pixelMap.readPixelsToBufferSync(readBuffer);
    }
}
```

### readPixels

readPixels(area: image.PositionArea): Promise\<void>

Reads the pixels in an area. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type                          | Mandatory| Description                    |
| ------ | ------------------------------ | ---- | ------------------------ |
| area   | [PositionArea](js-apis-image.md#positionarea7) | Yes  | Area from which the pixels will be read.|

**Return value**

| Type          | Description                                               |
| :------------- | :-------------------------------------------------- |
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const area: image.PositionArea = {
        pixels: new ArrayBuffer(8),
        offset: 0,
        stride: 8,
        region: { size: { height: 1, width: 2 }, x: 0, y: 0 }
    };
    if (pixelMap != undefined) {
        pixelMap.readPixels(area).then(() => {
            console.info('Succeeded in reading the image data in the area.'); // Called if the condition is met.
        }).catch((error: BusinessError) => {
            console.error(`Failed to read the image data in the area. code is ${error.code}, message is ${error.message}`);// Called if no condition is met.
        })
    }
}
```

### readPixelsSync

readPixelsSync(area: image.PositionArea): void

Reads the pixels in an area. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type                          | Mandatory| Description                    |
| ------ | ------------------------------ | ---- | ------------------------ |
| area   | [PositionArea](js-apis-image.md#positionarea7) | Yes  | Area from which the pixels will be read.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const area : image.PositionArea = {
        pixels: new ArrayBuffer(8),
        offset: 0,
        stride: 8,
        region: { size: { height: 1, width: 2 }, x: 0, y: 0 }
    };
    if (pixelMap != undefined) {
        pixelMap.readPixelsSync(area);
    }
}
```

### writePixels

writePixels(area: image.PositionArea): Promise\<void>

Writes the pixels to an area. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type                          | Mandatory| Description                |
| ------ | ------------------------------ | ---- | -------------------- |
| area   | [PositionArea](js-apis-image.md#positionarea7) | Yes  | Area to which the pixels will be written.|

**Return value**

| Type          | Description                                               |
| :------------- | :-------------------------------------------------- |
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const area: image.PositionArea = {
        pixels: new ArrayBuffer(8),
        offset: 0,
        stride: 8,
        region: { size: { height: 1, width: 2 }, x: 0, y: 0 }
    };
    let bufferArr: Uint8Array = new Uint8Array(area.pixels);
    for (let i = 0; i < bufferArr.length; i++) {
        bufferArr[i] = i + 1;
    }
    if (pixelMap != undefined) {
        pixelMap.writePixels(area).then(() => {
            console.info('Succeeded to write pixelmap into the specified area.');
        }).catch((error: BusinessError) => {
            console.error(`Failed to write pixelmap into the specified area. code is ${error.code}, message is ${error.message}`);
        })
    }
}
```

### writePixelsSync

writePixelsSync(area: image.PositionArea): void

Writes the pixels to an area. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type                          | Mandatory| Description                |
| ------ | ------------------------------ | ---- | -------------------- |
| area   | [PositionArea](js-apis-image.md#positionarea7) | Yes  | Area to which the pixels will be written.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const area: image.PositionArea = {
        pixels: new ArrayBuffer(8),
        offset: 0,
        stride: 8,
        region: { size: { height: 1, width: 2 }, x: 0, y: 0 }
    };
    let bufferArr: Uint8Array = new Uint8Array(area.pixels);
    for (let i = 0; i < bufferArr.length; i++) {
        bufferArr[i] = i + 1;
    }
    if (pixelMap != undefined) {
        pixelMap.writePixelsSync(area);
    }
}
```

### writeBufferToPixels

writeBufferToPixels(src: ArrayBuffer): Promise\<void>

Reads image data in an ArrayBuffer and writes the data to a **PixelMap** object. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type       | Mandatory| Description          |
| ------ | ----------- | ---- | -------------- |
| src    | ArrayBuffer | Yes  | Buffer from which the image data will be read.|

**Return value**

| Type          | Description                                           |
| -------------- | ----------------------------------------------- |
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const color: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    let bufferArr: Uint8Array = new Uint8Array(color);
    for (let i = 0; i < bufferArr.length; i++) {
        bufferArr[i] = i + 1;
    }
    if (pixelMap != undefined) {
        pixelMap.writeBufferToPixels(color).then(() => {
            console.info("Succeeded in writing data from a buffer to a PixelMap.");
        }).catch((error: BusinessError) => {
            console.error(`Failed to write data from a buffer to a PixelMap. code is ${error.code}, message is ${error.message}`);
        })
    }
}
```

### writeBufferToPixelsSync

writeBufferToPixelsSync(src: ArrayBuffer): void

Reads image data in an ArrayBuffer and writes the data to a **PixelMap** object. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type       | Mandatory| Description          |
| ------ | ----------- | ---- | -------------- |
| src    | ArrayBuffer | Yes  | Buffer from which the image data will be read.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    const color : ArrayBuffer = new ArrayBuffer(96);  // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
    let bufferArr : Uint8Array = new Uint8Array(color);
    for (let i = 0; i < bufferArr.length; i++) {
        bufferArr[i] = i + 1;
    }
    if (pixelMap != undefined) {
        pixelMap.writeBufferToPixelsSync(color);
    }
}
```

### getImageInfo

getImageInfo(): Promise\<image.ImageInfo>

Obtains the image information. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type                             | Description                                                       |
| --------------------------------- | ----------------------------------------------------------- |
| Promise\<[ImageInfo](js-apis-image.md#imageinfo)> | Promise used to return the image information. If the operation fails, an error message is returned.|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    if (pixelMap != undefined) {
        pixelMap.getImageInfo().then((imageInfo: image.ImageInfo) => {
            if (imageInfo != undefined) {
                console.info("Succeeded in obtaining the image pixel map information."+ imageInfo.size.height);
            }
        }).catch((error: BusinessError) => {
            console.error(`Failed to obtain the image pixel map information. code is ${error.code}, message is ${error.message}`);
        })
    }
}
```

### getImageInfoSync

getImageInfoSync(): image.ImageInfo

Obtains the image information. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.ImageSource

**Return value**

| Type                             | Description                                                       |
| --------------------------------- | ----------------------------------------------------------- |
| [ImageInfo](js-apis-image.md#imageinfo)           | Image information.                                               |

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  501    | Resource Unavailable |

**Example**
 
```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    if (pixelMap != undefined) {
        let imageInfo : image.ImageInfo = pixelMap.getImageInfoSync();
    }
}
```

### getBytesNumberPerRow

getBytesNumberPerRow(): number

Obtains the number of bytes per row of this image.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type  | Description                |
| ------ | -------------------- |
| number | Number of bytes per row.|

**Example**

```ts
let rowCount: number = pixelMap.getBytesNumberPerRow();
```

### getPixelBytesNumber

getPixelBytesNumber(): number

Obtains the total number of bytes of this image.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type  | Description                |
| ------ | -------------------- |
| number | Total number of bytes.|

**Example**

```ts
let pixelBytesNumber: number = pixelMap.getPixelBytesNumber();
```

### getDensity

getDensity():number

Obtains the density of this image.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type  | Description           |
| ------ | --------------- |
| number | Density of the image.|

**Example**

```ts
let getDensity: number = pixelMap.getDensity();
```

### opacity

opacity(rate: number): Promise\<void>

Sets an opacity rate for this image. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type  | Mandatory| Description                       |
| ------ | ------ | ---- | --------------------------- |
| rate   | number | Yes  | Opacity rate.|

**Return value**

| Type          | Description                                           |
| -------------- | ----------------------------------------------- |
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let rate: number = 0.5;
    if (pixelMap != undefined) {
        pixelMap.opacity(rate).then(() => {
            console.info('Succeeded in setting opacity.');
        }).catch((err: BusinessError) => {
            console.error(`Failed to set opacity. code is ${err.code}, message is ${err.message}`);
        })
    }
}
```

### opacitySync

opacitySync(rate: number): void

Sets the opacity rate for this PixelMap and initializes the PixelMap.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name  | Type                | Mandatory| Description                          |
| -------- | -------------------- | ---- | ------------------------------ |
| rate     | number               | Yes  | Opacity rate.  |

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let rate : number = 0.5;
    if (pixelMap != undefined) {
        pixelMap.opacitySync(rate);
    }
}
```

### createAlphaPixelmap

createAlphaPixelmap(): Promise\<PixelMap>

Creates a **PixelMap** object that contains only the alpha channel information. This object can be used for the shadow effect. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type                            | Description                       |
| -------------------------------- | --------------------------- |
| Promise\<[PixelMap](#pixelmap)> | Promise used to return the **PixelMap** object.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    if (pixelMap != undefined) {
        pixelMap.createAlphaPixelmap().then((alphaPixelMap: sendableImage.PixelMap) => {
            console.info('Succeeded in creating alpha pixelmap.');
        }).catch((error: BusinessError) => {
            console.error(`Failed to create alpha pixelmap. code is ${error.code}, message is ${error.message}`);
        })
    }
}
```

### createAlphaPixelmapSync

createAlphaPixelmapSync(): PixelMap

Creates a **PixelMap** object that contains only the alpha channel information. This object can be used for the shadow effect. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type                            | Description                 |
| -------------------------------- | --------------------- |
| [PixelMap](#pixelmap) | Returns a **PixelMap** object if the operation is successful; throws an error otherwise.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let resPixelMap : sendableImage.PixelMap = pixelMap.createAlphaPixelmapSync();
    return resPixelMap;
}
```

### scale

scale(x: number, y: number): Promise\<void>

Scales this image based on a given width and height. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type  | Mandatory| Description                           |
| ------ | ------ | ---- | ------------------------------- |
| x      | number | Yes  | Scaling multiple of the width.|
| y      | number | Yes  | Scaling multiple of the height.|

**Return value**

| Type          | Description                       |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let scaleX: number = 2.0;
    let scaleY: number = 1.0;
    if (pixelMap != undefined) {
        pixelMap.scale(scaleX, scaleY).then(() => {
            console.info('Succeeded in scaling pixelmap.');
        }).catch((err: BusinessError) => {
            console.error(`Failed to scale pixelmap. code is ${err.code}, message is ${err.message}`);
            
        })   
    }
}
```

### scaleSync

scaleSync(x: number, y: number): void

Scales this image based on a given width and height. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type  | Mandatory| Description                           |
| ------ | ------ | ---- | ------------------------------- |
| x      | number | Yes  | Scaling multiple of the width.|
| y      | number | Yes  | Scaling multiple of the height.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let scaleX: number = 2.0;
    let scaleY: number = 1.0;
    if (pixelMap != undefined) {
        pixelMap.scaleSync(scaleX, scaleY);
    }
}
```

### translate

translate(x: number, y: number): Promise\<void>

Translates this image based on given coordinates. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type  | Mandatory| Description       |
| ------ | ------ | ---- | ----------- |
| x      | number | Yes  | X coordinate to translate.|
| y      | number | Yes  | Y coordinate to translate.|

**Return value**

| Type          | Description                       |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let translateX: number = 50.0;
    let translateY: number = 10.0;
    if (pixelMap != undefined) {
        pixelMap.translate(translateX, translateY).then(() => {
            console.info('Succeeded in translating pixelmap.');
        }).catch((err: BusinessError) => {
            console.error(`Failed to translate pixelmap. code is ${err.code}, message is ${err.message}`);
        })
    }
}
```

### translateSync

translateSync(x: number, y: number): void

Translates this image based on given coordinates. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name  | Type                | Mandatory| Description                           |
| -------- | -------------------- | ---- | ------------------------------- |
| x        | number               | Yes  | Scaling multiple of the width.|
| y        | number               | Yes  | Scaling multiple of the height.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let translateX : number = 50.0;
    let translateY : number = 10.0;
    if (pixelMap != undefined) {
        pixelMap.translateSync(translateX, translateY);
    }
}
```

### rotate

rotate(angle: number): Promise\<void>

Rotates this image based on a given angle. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type  | Mandatory| Description                         |
| ------ | ------ | ---- | ----------------------------- |
| angle  | number | Yes  | Angle to rotate.             |

**Return value**

| Type          | Description                       |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let angle: number = 90.0;
    if (pixelMap != undefined) {
        pixelMap.rotate(angle).then(() => {
            console.info('Succeeded in rotating pixelmap.');
        }).catch((err: BusinessError) => {
            console.error(`Failed to rotate pixelmap. code is ${err.code}, message is ${err.message}`); 
        })
    }
}
```

### rotateSync

rotateSync(angle: number): void

Rotates this image based on a given angle. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name  | Type                | Mandatory| Description                         |
| -------- | -------------------- | ---- | ----------------------------- |
| angle    | number               | Yes  | Angle to rotate.             |

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let angle : number = 90.0;
    if (pixelMap != undefined) {
        pixelMap.rotateSync(angle);
    }
}
```

### flip

flip(horizontal: boolean, vertical: boolean): Promise\<void>

Flips this image horizontally or vertically, or both. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name    | Type   | Mandatory| Description     |
| ---------- | ------- | ---- | --------- |
| horizontal | boolean | Yes  | Whether to flip the image horizontally.|
| vertical   | boolean | Yes  | Whether to flip the image vertically.|

**Return value**

| Type          | Description                       |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let horizontal: boolean = true;
    let vertical: boolean = false;
    if (pixelMap != undefined) {
        pixelMap.flip(horizontal, vertical).then(() => {
            console.info('Succeeded in flipping pixelmap.');
        }).catch((err: BusinessError) => {
            console.error(`Failed to flip pixelmap. code is ${err.code}, message is ${err.message}`);
            
        })
    }
}
```

### flipSync

flipSync(horizontal: boolean, vertical: boolean): void

Flips this image horizontally or vertically, or both. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name    | Type                | Mandatory| Description                         |
| ---------- | -------------------- | ---- | ----------------------------- |
| horizontal | boolean              | Yes  | Whether to flip the image horizontally.                   |
| vertical   | boolean              | Yes  | Whether to flip the image vertically.                   |

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let horizontal : boolean = true;
    let vertical : boolean = false;
    if (pixelMap != undefined) {
        pixelMap.flipSync(horizontal, vertical);
    }
}
```

### crop

crop(region: image.Region): Promise\<void>

Crops this image based on a given size. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type              | Mandatory| Description       |
| ------ | ------------------ | ---- | ----------- |
| region | [Region](../apis-image-kit/js-apis-image.md#region8) | Yes  | Size of the image after cropping.|

**Return value**

| Type          | Description                       |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let region: image.Region = { x: 0, y: 0, size: { height: 100, width: 100 } };
    if (pixelMap != undefined) {
        pixelMap.crop(region).then(() => {
            console.info('Succeeded in cropping pixelmap.');
        }).catch((err: BusinessError) => {
            console.error(`Failed to crop pixelmap. code is ${err.code}, message is ${err.message}`);

        });
    }
}
```

### cropSync

cropSync(region: image.Region): void

Crops this image based on a given size. This API returns the result synchronously.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name  | Type                | Mandatory| Description                         |
| -------- | -------------------- | ---- | ----------------------------- |
| region   | [Region](../apis-image-kit/js-apis-image.md#region8)   | Yes  | Size of the image after cropping.                 |

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
|  401    | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
|  501    | Resource Unavailable |

**Example**

```ts
import { image } from '@kit.ImageKit';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let region : image.Region = { x: 0, y: 0, size: { height: 100, width: 100 } };
    if (pixelMap != undefined) {
        pixelMap.cropSync(region);
    }
}
```

### getColorSpace

getColorSpace(): colorSpaceManager.ColorSpaceManager

Obtains the color space of this image.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type                               | Description            |
| ----------------------------------- | ---------------- |
| [colorSpaceManager.ColorSpaceManager](../apis-arkgraphics2d/js-apis-colorSpaceManager.md#colorspacemanager) | Color space.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
| 62980101| If the image data abnormal.            |
| 62980103| If the image data unsupport.             |
| 62980115| If the image parameter invalid.            |

**Example**

```ts
async function Demo() {
    if (pixelMap != undefined) {
        let csm = pixelMap.getColorSpace();
    }
}
```

### setColorSpace

setColorSpace(colorSpace: colorSpaceManager.ColorSpaceManager): void

Sets the color space for this image.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name    | Type                               | Mandatory| Description           |
| ---------- | ----------------------------------- | ---- | --------------- |
| colorSpace | [colorSpaceManager.ColorSpaceManager](../apis-arkgraphics2d/js-apis-colorSpaceManager.md#colorspacemanager) | Yes  | Color space.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
| 62980111| If the operation invalid.        |
| 62980115| If the image parameter invalid.             |

**Example**

```ts
import { colorSpaceManager } from '@kit.ArkGraphics2D';
async function Demo() {
    let colorSpaceName = colorSpaceManager.ColorSpace.SRGB;
    let csm: colorSpaceManager.ColorSpaceManager = colorSpaceManager.create(colorSpaceName);
    if (pixelMap != undefined) {
        pixelMap.setColorSpace(csm);
    }
}
```

### applyColorSpace

applyColorSpace(targetColorSpace: colorSpaceManager.ColorSpaceManager): Promise\<void>

Performs Color Space Converters (CSC) on the image pixel color based on a given color space. This API uses a promise to return the result.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name| Type              | Mandatory| Description       |
| ------ | ------------------ | ---- | ----------- |
| targetColorSpace | [colorSpaceManager.ColorSpaceManager](../apis-arkgraphics2d/js-apis-colorSpaceManager.md#colorspacemanager) | Yes  | Target color space. SRGB, DCI_P3, DISPLAY_P3, and ADOBE_RGB_1998 are supported.|

**Return value**

| Type          | Description                       |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | ------------------------------------------|
| 401     | Parameter error. Possible causes: 1.Mandatory parameters are left unspecified. 2.Incorrect parameter types. 3.Parameter verification failed |
| 62980104| Failed to initialize the internal object. |
| 62980108| Failed to convert the color space.       |
| 62980115| Invalid image parameter.            |

**Example**

```ts
import { colorSpaceManager } from '@kit.ArkGraphics2D';
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    let colorSpaceName = colorSpaceManager.ColorSpace.SRGB;
    let targetColorSpace: colorSpaceManager.ColorSpaceManager = colorSpaceManager.create(colorSpaceName);
    pixelMap.applyColorSpace(targetColorSpace).then(() => {
        console.info('Succeeded in applying color space for pixelmap object.');
    }).catch((error: BusinessError) => {
        console.error(`Failed to apply color space for pixelmap object. code is ${error.code}, message is ${error.message}`); 
    })
}
```

### marshalling

marshalling(sequence: rpc.MessageSequence): void

Marshals this **PixelMap** object and writes it to a **MessageSequence** object.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name                | Type                                                 | Mandatory| Description                                    |
| ---------------------- | ------------------------------------------------------ | ---- | ---------------------------------------- |
| sequence               | [rpc.MessageSequence](../apis-ipc-kit/js-apis-rpc.md#messagesequence9)  | Yes  | **MessageSequence** object.                |

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
| 62980115 | Invalid image parameter.              |
| 62980097 | IPC error.             |

**Example**
```ts
import { sendableImage } from '@kit.ImageKit';
import { image } from '@kit.ImageKit';
import { rpc } from '@kit.IPCKit';

class MySequence implements rpc.Parcelable {
    pixel_map: sendableImage.PixelMap;
    constructor(conPixelMap : sendableImage.PixelMap) {
        this.pixel_map = conPixelMap;
    }
    marshalling(messageSequence : rpc.MessageSequence) {
        this.pixel_map.marshalling(messageSequence);
        console.info('marshalling');
        return true;
    }
    unmarshalling(messageSequence : rpc.MessageSequence) {
      sendableImage.createPixelMap(new ArrayBuffer(96), {size: { height:4, width: 6}}).then((pixelParcel: sendableImage.PixelMap) => {
        pixelParcel.unmarshalling(messageSequence).then(async (pixelMap: sendableImage.PixelMap) => {
          this.pixel_map = pixelMap;
          pixelMap.getImageInfo().then((imageInfo: image.ImageInfo) => {
            console.info("unmarshalling information h:" + imageInfo.size.height + "w:" + imageInfo.size.width);
          })
        })
      });
      return true;
    }
}
async function Demo() {
   const color: ArrayBuffer = new ArrayBuffer(96);
   let bufferArr: Uint8Array = new Uint8Array(color);
   for (let i = 0; i < bufferArr.length; i++) {
      bufferArr[i] = 0x80;
   }
   let opts: image.InitializationOptions = {
      editable: true,
      pixelFormat: 4,
      size: { height: 4, width: 6 },
      alphaType: 3
   }
   let pixelMap: sendableImage.PixelMap | undefined = undefined;
   sendableImage.createPixelMap(color, opts).then((srcPixelMap: sendableImage.PixelMap) => {
      pixelMap = srcPixelMap;
   })
   if (pixelMap != undefined) {
    // Implement serialization.
     let parcelable: MySequence = new MySequence(pixelMap);
     let data: rpc.MessageSequence = rpc.MessageSequence.create();
     data.writeParcelable(parcelable);

    // Implement deserialization to obtain data through the RPC.
     let ret: MySequence = new MySequence(pixelMap);
     data.readParcelable(ret);
   }
}
```

### unmarshalling

unmarshalling(sequence: rpc.MessageSequence): Promise\<PixelMap>

Unmarshals a **MessageSequence** object to obtain a **PixelMap** object.
To create a **PixelMap** object in synchronous mode, use [createPixelMapFromParcel](#sendableimagecreatepixelmapfromparcel).

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name                | Type                                                 | Mandatory| Description                                    |
| ---------------------- | ----------------------------------------------------- | ---- | ---------------------------------------- |
| sequence               | [rpc.MessageSequence](../apis-ipc-kit/js-apis-rpc.md#messagesequence9) | Yes  | **MessageSequence** object that stores the **PixelMap** information.     |

**Return value**

| Type                            | Description                 |
| -------------------------------- | --------------------- |
| Promise\<[PixelMap](#pixelmap)> | Promise used to return the result. If the operation fails, an error message is returned.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
| 62980115 | Invalid image parameter.              |
| 62980097 | IPC error.              |
| 62980096 | The operation failed.         |

**Example**

```ts
import { sendableImage } from '@kit.ImageKit';
import { image } from '@kit.ImageKit';
import { rpc } from '@kit.IPCKit';

class MySequence implements rpc.Parcelable {
    pixel_map: sendableImage.PixelMap;
    constructor(conPixelMap: sendableImage.PixelMap) {
        this.pixel_map = conPixelMap;
    }
    marshalling(messageSequence: rpc.MessageSequence) {
        this.pixel_map.marshalling(messageSequence);
        console.info('marshalling');
        return true;
    }
    unmarshalling(messageSequence: rpc.MessageSequence) {
      sendableImage.createPixelMap(new ArrayBuffer(96), {size: { height:4, width: 6}}).then((pixelParcel : sendableImage.PixelMap) => {
        pixelParcel.unmarshalling(messageSequence).then(async (pixelMap : sendableImage.PixelMap) => {
          this.pixel_map = pixelMap;
          pixelMap.getImageInfo().then((imageInfo : image.ImageInfo) => {
            console.info("unmarshalling information h:" + imageInfo.size.height + "w:" + imageInfo.size.width);
          })
        })
      });
      return true;
    }
}
async function Demo() {
   const color: ArrayBuffer = new ArrayBuffer(96);
   let bufferArr: Uint8Array = new Uint8Array(color);
   for (let i = 0; i < bufferArr.length; i++) {
      bufferArr[i] = 0x80;
   }
   let opts: image.InitializationOptions = {
      editable: true,
      pixelFormat: 4,
      size: { height: 4, width: 6 },
      alphaType: 3
   }
   let pixelMap: sendableImage.PixelMap | undefined = undefined;
   sendableImage.createPixelMap(color, opts).then((srcPixelMap : sendableImage.PixelMap) => {
      pixelMap = srcPixelMap;
   })
   if (pixelMap != undefined) {
    // Implement serialization.
     let parcelable: MySequence = new MySequence(pixelMap);
     let data : rpc.MessageSequence = rpc.MessageSequence.create();
     data.writeParcelable(parcelable);

    // Implement deserialization to obtain data through the RPC.
     let ret : MySequence = new MySequence(pixelMap);
     data.readParcelable(ret);
   }
}
```

### release

release():Promise\<void>

Releases this **PixelMap** object. This API uses a promise to return the result.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type          | Description                           |
| -------------- | ------------------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

async function Demo() {
    if (pixelMap != undefined) {
        pixelMap.release().then(() => {
            console.info('Succeeded in releasing pixelmap object.');
        }).catch((error: BusinessError) => {
            console.error(`Failed to release pixelmap object. code is ${error.code}, message is ${error.message}`);
        })
    }
}
```

## Size

Describes the size of an image.
It inherits from [lang.ISendable](../../arkts-utils/arkts-sendable.md#isendable).

**Widget capability**: This API can be used in ArkTS widgets since API version 12.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

| Name  | Type  | Read Only| Optional| Description          |
| ------ | ------ | ---- | ---- | -------------- |
| height | number | No  | No  | Height of the output image, in px.|
| width  | number | No  | No  | Width of the output image, in px.|

## Region

Describes the region information.
It inherits from [lang.ISendable](../../arkts-utils/arkts-sendable.md#isendable).

**Widget capability**: This API can be used in ArkTS widgets since API version 12.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.Core

| Name| Type         | Read Only| Optional| Description        |
| ---- | ------------- | ---- | ---- | ------------ |
| size | [Size](#size) | No  | No  | Region size.  |
| x    | number        | No  | No  | X coordinate.|
| y    | number        | No  | No  | Y coordinate.|

## sendableImage.createImageSource

createImageSource(uri: string): ImageSource

Creates an **ImageSource** instance based on a given URI.


**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.ImageSource

**Parameters**

| Name| Type  | Mandatory| Description                              |
| ------ | ------ | ---- | ---------------------------------- |
| uri    | string | Yes  | Image path. Currently, only the application sandbox path is supported.<br>The following formats are supported: .jpg, .png, .gif, .bmp, .webp, .dng [SVG](./js-apis-image.md#svg), and ico.|

**Return value**

| Type                       | Description                                        |
| --------------------------- | -------------------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns **undefined** otherwise.|

**Example**

```ts
const context: Context = getContext(this);
const path: string = context.cacheDir + "/test.jpg";
const sendableImageSourceApi: sendableImage.ImageSource = sendableImage.createImageSource(path);
```

## sendableImage.createImageSource

createImageSource(fd: number): ImageSource

Creates an **ImageSource** instance based on a given file descriptor.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.ImageSource

**Parameters**

| Name| Type  | Mandatory| Description         |
| ------ | ------ | ---- | ------------- |
| fd     | number | Yes  | File descriptor.|

**Return value**

| Type                       | Description                                        |
| --------------------------- | -------------------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns **undefined** otherwise.|

**Example**

```ts
import { fileIo } from '@kit.CoreFileKit';

const context: Context = getContext(this);
const path: string = context.cacheDir + "/test.jpg";
let file = fileIo.openSync(path, fileIo.OpenMode.CREATE | fileIo.OpenMode.READ_WRITE);
const sendableImageSourceApi: sendableImage.ImageSource = sendableImage.createImageSource(file.fd);
```

## sendableImage.createImageSource

createImageSource(buf: ArrayBuffer): ImageSource

Creates an **ImageSource** instance based on buffers.

**Widget capability**: This API can be used in ArkTS widgets since API version 12.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.ImageSource

**Parameters**

| Name| Type       | Mandatory| Description            |
| ------ | ----------- | ---- | ---------------- |
| buf    | ArrayBuffer | Yes  | Array of image buffers.|

**Return value**

| Type                       | Description                                        |
| --------------------------- | -------------------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns **undefined** otherwise.|


**Example**

```ts
const buf: ArrayBuffer = new ArrayBuffer(96); // 96 is the size of the pixel buffer to create. The value is calculated as follows: height * width *4.
const sendableImageSourceApi: sendableImage.ImageSource = sendableImage.createImageSource(buf);
```

## sendableImage.createImageReceiver

createImageReceiver(size: image.Size, format: image.ImageFormat, capacity: number): ImageReceiver

Creates an **ImageReceiver** instance based on the specified image size, format, and capacity.

**System capability**: SystemCapability.Multimedia.Image.ImageReceiver

**Parameters**

| Name  | Type  | Mandatory| Description                  |
| -------- | ------ | ---- | ---------------------- |
| size    | [image.Size](./js-apis-image.md#size)  | Yes  | Default size of the image.      |
| format   | [image.ImageFormat](./js-apis-image.md#imageformat9) | Yes  | Image format, which is a constant of **image.ImageFormat**. (Currently, only **ImageFormat:JPEG** is supported.)            |
| capacity | number | Yes  | Maximum number of images that can be accessed at the same time.|

**Return value**

| Type                            | Description                                   |
| -------------------------------- | --------------------------------------- |
| [ImageReceiver](#imagereceiver) | Returns an **ImageReceiver** instance if the operation is successful.|

**Error codes**

For details about the error codes, see [Image Error Codes](errorcode-image.md).

| ID| Error Message|
| ------- | --------------------------------------------|
| 401| Parameter error.Possible causes:1.Mandatory parameters are left unspecified;2.Incorrect parameter types;   |

**Example**

```ts
import { image } from '@kit.ImageKit';

let size: image.Size = {
    height: 8192,
    width: 8
} 
let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
```

## ImageSource

Provides APIs to obtain image information. Before calling any API in **ImageSource**, you must use [createImageSource](#sendableimagecreateimagesource) to create an **ImageSource** instance.


### createPixelMap

createPixelMap(options?: image.DecodingOptions): Promise\<PixelMap>

Creates a **PixelMap** object based on image decoding parameters. This API uses a promise to return the result.

**Widget capability**: This API can be used in ArkTS widgets since API version 12.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Multimedia.Image.ImageSource

**Parameters**

| Name | Type                                | Mandatory| Description      |
| ------- | ------------------------------------ | ---- | ---------- |
| options | [image.DecodingOptions](./js-apis-image.md#decodingoptions7) | No  | Image decoding parameters.|

**Return value**

| Type                            | Description                 |
| -------------------------------- | --------------------- |
| Promise\<[PixelMap]> | Promise used to return the **PixelMap** object.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

const context: Context = getContext(this);
const path: string = context.cacheDir + "/test.jpg";
const sendableImageSourceApi: sendableImage.ImageSource = sendableImage.createImageSource(path);
sendableImageSourceApi.createPixelMap().then((pixelMap: sendableImage.PixelMap) => {
    console.info('Succeeded in creating pixelMap object through image decoding parameters.');
}).catch((error: BusinessError) => {
    console.error(`Failed to create pixelMap object through image decoding parameters. code ${error.code}, message is ${error.message}`);
})
```

### release

release(): Promise\<void>

Releases this **ImageSource** instance. This API uses a promise to return the result.
The thread that runs **release** is insecure.

**System capability**: SystemCapability.Multimedia.Image.ImageSource

**Return value**

| Type          | Description                       |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';

const context: Context = getContext(this);
const path: string = context.cacheDir + "/test.jpg";
const sendableImageSourceApi: sendableImage.ImageSource = sendableImage.createImageSource(path);
sendableImageSourceApi.release().then(() => {
    console.info('Succeeded in releasing the image source instance.');
}).catch((error: BusinessError) => {
    console.error(`Failed to release the image source instance. code ${error.code}, message is ${error.message}`);
})
```

## Image

Provides APIs for basic image operations, including obtaining image information and reading and writing image data. An **Image** instance is returned when [readNextImage](#readnextimage) and [readLatestImage](#readlatestimage) are called.
This class inherits from [lang.ISendable](../../arkts-utils/arkts-sendable.md#isendable).

### Attributes

**System capability**: SystemCapability.Multimedia.Image.Core

| Name    | Type              | Read Only| Optional| Description                                              |
| -------- | ------------------ | ---- | ---- | -------------------------------------------------- |
| clipRect | [Region](#region) | No  | No  | Image area to be cropped.                                |
| size     | [Size](#size)      | Yes  | No  | Image size.                                        |
| format   | number             | Yes  | No  | Image format. For details, see [OH_NativeBuffer_Format](../apis-arkgraphics2d/_o_h___native_buffer.md#oh_nativebuffer_format).|
| timestamp<sup>12+</sup> | number         | Yes     | No  | Image timestamp.|

### getComponent

getComponent(componentType: image.ComponentType): Promise\<image.Component>

Obtains the component buffer from the **Image** instance based on the color component type. This API uses a promise to return the result.
The thread that runs **getComponent** is insecure.

**System capability**: SystemCapability.Multimedia.Image.Core

**Parameters**

| Name       | Type                            | Mandatory| Description            |
| ------------- | -------------------------------- | ---- | ---------------- |
| componentType | [image.ComponentType](./js-apis-image.md#componenttype9) | Yes  | Color component type of the image.|

**Return value**

| Type                             | Description                             |
| --------------------------------- | --------------------------------- |
| Promise<[image.Component](./js-apis-image.md#component9)> | Promise used to return the component buffer.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';

async function Demo() {
  let size: image.Size = {
    height: 8192,
    width: 8
  }
  let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
  let img = await receiver.readNextImage();
  img.getComponent(4).then((component: image.Component) => {
    console.info('getComponent succeeded.');
  }).catch((error: BusinessError) => {
    console.error(`getComponent failed code ${error.code}, message is ${error.message}`);
  })
}
```

### release

release(): Promise\<void>

Releases this **Image** instance. This API uses a promise to return the result.

The corresponding resources must be released before another image arrives. The thread that runs **release** is insecure.


**System capability**: SystemCapability.Multimedia.Image.Core

**Return value**

| Type          | Description                 |
| -------------- | --------------------- |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';

async function Demo() {
  let size: image.Size = {
    height: 8192,
    width: 8
  }
  let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
  let img = await receiver.readNextImage();
  img.release().then(() => {
    console.info('release succeeded.');
  }).catch((error: BusinessError) => {
    console.error(`release failed. code ${error.code}, message is ${error.message}`);
  })
}
```

## ImageReceiver

You can use the **ImageReceiver** class to obtain the surface ID of a component, read the latest image or the next image, and release **ImageReceiver** instances.

Before calling any APIs in **ImageReceiver**, you must create an **ImageReceiver** instance.

### Attributes

**System capability**: SystemCapability.Multimedia.Image.ImageReceiver

| Name    | Type                        | Read Only| Optional| Description              |
| -------- | ---------------------------- | ---- | ---- | ------------------ |
| size     | [image.Size](./js-apis-image.md#size)                | Yes  | No  | Image size.        |
| capacity | number                       | Yes  | No  | Maximum number of images that can be accessed at the same time.|
| format   | [image.ImageFormat](./js-apis-image.md#imageformat9) | Yes  | No  | Image format.        |

### getReceivingSurfaceId

getReceivingSurfaceId(): Promise\<string>

Obtains a surface ID for the camera or other components. This API uses a promise to return the result.

**System capability**: SystemCapability.Multimedia.Image.ImageReceiver

**Return value**

| Type            | Description                |
| ---------------- | -------------------- |
| Promise\<string> | Promise used to return the surface ID.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';

let size: image.Size = {
    height: 8192,
    width: 8
}
let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
receiver.getReceivingSurfaceId().then((id: string) => {
    console.info('Succeeded in getting the ReceivingSurfaceId.');
}).catch((error: BusinessError) => {
    console.error(`Failed to get the ReceivingSurfaceId.code ${error.code}, message is ${error.message}`);
})
```

### readLatestImage

readLatestImage(): Promise\<Image>

Reads the latest image from the **ImageReceiver** instance. This API uses a promise to return the result.

**System capability**: SystemCapability.Multimedia.Image.ImageReceiver

**Return value**

| Type                     | Description              |
| ------------------------- | ------------------ |
| Promise<[Image](#image)> | Promise used to return the latest image.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';

let size: image.Size = {
    height: 8192,
    width: 8
}
let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
receiver.readLatestImage().then((img: image.Image) => {
    console.info('readLatestImage succeeded.');
}).catch((error: BusinessError) => {
    console.error(`readLatestImage failed. code ${error.code}, message is ${error.message}`);
})
```

### readNextImage

readNextImage(): Promise\<Image>

Reads the next image from the **ImageReceiver** instance. This API uses a promise to return the result.

**System capability**: SystemCapability.Multimedia.Image.ImageReceiver

**Return value**

| Type                     | Description                |
| ------------------------- | -------------------- |
| Promise<[Image](#image)> | Promise used to return the next image.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';

let size: image.Size = {
    height: 8192,
    width: 8
}
let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
receiver.readNextImage().then((img: image.Image) => {
    console.info('readNextImage succeeded.');
}).catch((error: BusinessError) => {
    console.error(`readNextImage failed. code ${error.code}, message is ${error.message}`);
})
```

### on

on(type: 'imageArrival', callback: AsyncCallback\<void>): void

Listens for image arrival events.

**System capability**: SystemCapability.Multimedia.Image.ImageReceiver

**Parameters**

| Name  | Type                | Mandatory| Description                                                  |
| -------- | -------------------- | ---- | ------------------------------------------------------ |
| type     | string               | Yes  | Type of event to listen for. The value is fixed at **'imageArrival'**, which is triggered when an image is received.|
| callback | AsyncCallback\<void> | Yes  | Callback invoked for the event.                                      |

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';

let size: image.Size = {
    height: 8192,
    width: 8
}
let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
receiver.on('imageArrival', () => {
    // image arrival, do something.
})
```

### release

release(): Promise\<void>

Releases this **ImageReceiver** instance. This API uses a promise to return the result.
The thread that runs **release** is insecure.

**System capability**: SystemCapability.Multimedia.Image.ImageReceiver

**Return value**

| Type          | Description              |
| -------------- | ------------------ |
| Promise\<void> | Promise used to return the result.|

**Example**

```ts
import { BusinessError } from '@kit.BasicServicesKit';
import { image } from '@kit.ImageKit';

let size: image.Size = {
    height: 8192,
    width: 8
}
let receiver: sendableImage.ImageReceiver = sendableImage.createImageReceiver(size, image.ImageFormat.JPEG, 8);
receiver.release().then(() => {
    console.info('release succeeded.');
}).catch((error: BusinessError) => {
    console.error(`release failed. code ${error.code}, message is ${error.message}`);
})
```