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en/application-dev/reference/apis/js-apis-image.md
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# Image Processing
The **Image** module provides APIs for image processing. You can use the APIs to create a **PixelMap** object with specified properties or read image pixel data (even in an area).
> **NOTE**
>
> The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
......@@ -11,11 +13,12 @@ import image from '@ohos.multimedia.image';
```
## image.createPixelMap<sup>8+</sup>
createPixelMap(colors: ArrayBuffer, options: InitializationOptions): Promise\<PixelMap>
Creates a **PixelMap** object. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
......@@ -34,7 +37,7 @@ Creates a **PixelMap** object. This API uses a promise to return the result.
```js
const color = new ArrayBuffer(96);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
let opts = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts)
.then((pixelmap) => {
......@@ -47,7 +50,7 @@ createPixelMap(colors: ArrayBuffer, options: InitializationOptions, callback: As
Creates a **PixelMap** object. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
......@@ -61,10 +64,15 @@ Creates a **PixelMap** object. This API uses an asynchronous callback to return
```js
const color = new ArrayBuffer(96);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
let opts = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts, (pixelmap) => {
})
image.createPixelMap(color, opts, (error, pixelmap) => {
if(error) {
console.log('Failed to create pixelmap.');
} else {
console.log('Succeeded in creating pixelmap.');
}
})
```
## PixelMap<sup>7+</sup>
......@@ -73,11 +81,11 @@ Provides APIs to read or write image pixel map data and obtain image pixel map i
### Attributes
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Type | Readable| Writable| Description |
| ----------------------- | ------- | ---- | ---- | -------------------------- |
| isEditable<sup>7+</sup> | boolean | Yes | No | Whether the image pixel map is editable.|
| ---------- | ------- | ---- | ---- | -------------------------- |
| isEditable | boolean | Yes | No | Whether the image pixel map is editable.|
### readPixelsToBuffer<sup>7+</sup>
......@@ -85,24 +93,24 @@ readPixelsToBuffer(dst: ArrayBuffer): Promise\<void>
Reads image pixel map data and writes the data to an **ArrayBuffer**. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ----------- | ---- | ------------------------------------------------------------ |
| dst | ArrayBuffer | Yes | Buffer to which the image pixel map data will be written.|
| ------ | ----------- | ---- | ----------------------------------------------------------------------------------------------------- |
| dst | ArrayBuffer | Yes | Buffer to which the image pixel map data will be written. The buffer size is obtained by calling **getPixelBytesNumber**.|
**Return value**
| Type | Description |
| :------------- | :---------------------------------------------- |
| Promise\<void> | Promise used to return the operation result. If the operation fails, an error message is returned.|
| -------------- | ----------------------------------------------- |
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
const readBuffer = new ArrayBuffer(400);
const readBuffer = new ArrayBuffer(96);
pixelmap.readPixelsToBuffer(readBuffer).then(() => {
console.log('Succeeded in reading image pixel data.'); // Called if the condition is met.
}).catch(error => {
......@@ -116,19 +124,19 @@ readPixelsToBuffer(dst: ArrayBuffer, callback: AsyncCallback\<void>): void
Reads image pixel map data and writes the data to an **ArrayBuffer**. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ------------------------------------------------------------ |
| dst | ArrayBuffer | Yes | Buffer to which the image pixel map data will be written.|
| callback | AsyncCallback\<void> | Yes | Callback used to return the operation result. If the operation fails, an error message is returned. |
| -------- | -------------------- | ---- | ----------------------------------------------------------------------------------------------------- |
| dst | ArrayBuffer | Yes | Buffer to which the image pixel map data will be written. The buffer size is obtained by calling **getPixelBytesNumber**.|
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned. |
**Example**
```js
const readBuffer = new ArrayBuffer(400);
const readBuffer = new ArrayBuffer(96);
pixelmap.readPixelsToBuffer(readBuffer, (err, res) => {
if(err) {
console.log('Failed to read image pixel data.'); // Called if no condition is met.
......@@ -144,7 +152,7 @@ readPixels(area: PositionArea): Promise\<void>
Reads image pixel map data in an area. This API uses a promise to return the data read.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
......@@ -156,7 +164,7 @@ Reads image pixel map data in an area. This API uses a promise to return the dat
| Type | Description |
| :------------- | :-------------------------------------------------- |
| Promise\<void> | Promise used to return the operation result. If the operation fails, an error message is returned.|
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|
**Example**
......@@ -175,20 +183,20 @@ readPixels(area: PositionArea, callback: AsyncCallback\<void>): void
Reads image pixel map data in an area. This API uses an asynchronous callback to return the data read.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------ | ---- | ------------------------------ |
| area | [PositionArea](#positionarea7) | Yes | Area from which the image pixel map data will be read. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the operation result. If the operation fails, an error message is returned.|
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
const color = new ArrayBuffer(96);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
let opts = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts, (err, pixelmap) => {
if(pixelmap == undefined){
......@@ -211,7 +219,7 @@ writePixels(area: PositionArea): Promise\<void>
Writes image pixel map data to an area. This API uses a promise to return the operation result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
......@@ -223,13 +231,13 @@ Writes image pixel map data to an area. This API uses a promise to return the op
| Type | Description |
| :------------- | :-------------------------------------------------- |
| Promise\<void> | Promise used to return the operation result. If the operation fails, an error message is returned.|
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
const color = new ArrayBuffer(96);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
let opts = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts)
.then( pixelmap => {
......@@ -265,21 +273,21 @@ writePixels(area: PositionArea, callback: AsyncCallback\<void>): void
Writes image pixel map data to an area. This API uses an asynchronous callback to return the operation result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| --------- | ------------------------------ | ---- | ------------------------------ |
| area | [PositionArea](#positionarea7) | Yes | Area to which the image pixel map data will be written. |
| callback: | AsyncCallback\<void> | Yes | Callback used to return the operation result. If the operation fails, an error message is returned.|
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
const area = new ArrayBuffer(400);
pixelmap.writePixels(area, (error) => {
if (error!=undefined) {
if (error != undefined) {
console.info('Failed to write pixelmap into the specified area.');
} else {
const readArea = {
......@@ -298,7 +306,7 @@ 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.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
......@@ -310,14 +318,14 @@ Reads image data in an **ArrayBuffer** and writes the data to a **PixelMap** obj
| Type | Description |
| -------------- | ----------------------------------------------- |
| Promise\<void> | Promise used to return the operation result. If the operation fails, an error message is returned.|
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
const color = new ArrayBuffer(96);
const pixelMap = new ArrayBuffer(400);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
pixelMap.writeBufferToPixels(color).then(() => {
console.log("Succeeded in writing data from a buffer to a PixelMap.");
}).catch((err) => {
......@@ -331,21 +339,21 @@ writeBufferToPixels(src: ArrayBuffer, callback: AsyncCallback\<void>): void
Reads image data in an **ArrayBuffer** and writes the data to a **PixelMap** object. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ------------------------------ |
| src | ArrayBuffer | Yes | Buffer from which the image data will be read. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the operation result. If the operation fails, an error message is returned.|
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
const color = new ArrayBuffer(96);\
const color = new ArrayBuffer(96);
const pixelMap = new ArrayBuffer(400);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
pixelMap.writeBufferToPixels(color, function(err) {
if (err) {
console.error("Failed to write data from a buffer to a PixelMap.");
......@@ -362,7 +370,7 @@ getImageInfo(): Promise\<ImageInfo>
Obtains pixel map information of this image. This API uses a promise to return the information.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Return value**
......@@ -387,7 +395,7 @@ getImageInfo(callback: AsyncCallback\<ImageInfo>): void
Obtains pixel map information of this image. This API uses an asynchronous callback to return the information.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
......@@ -399,7 +407,7 @@ Obtains pixel map information of this image. This API uses an asynchronous callb
```js
pixelmap.getImageInfo((imageInfo) => {
console.log("Succeeded in obtaining the image pixel map information..");
console.log("Succeeded in obtaining the image pixel map information.");
})
```
......@@ -407,21 +415,21 @@ pixelmap.getImageInfo((imageInfo) => {
getBytesNumberPerRow(): number
Obtains the number of bytes per line of the image pixel map.
Obtains the number of bytes per row of this image pixel map.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Return value**
| Type | Description |
| ------ | -------------------- |
| number | Number of bytes per line.|
| number | Number of bytes per row.|
**Example**
```js
const color = new ArrayBuffer(96);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
let opts = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts, (err,pixelmap) => {
let rowCount = pixelmap.getBytesNumberPerRow();
......@@ -432,9 +440,9 @@ image.createPixelMap(color, opts, (err,pixelmap) => {
getPixelBytesNumber(): number
Obtains the total number of bytes of the image pixel map.
Obtains the total number of bytes of this image pixel map.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Return value**
......@@ -448,25 +456,410 @@ Obtains the total number of bytes of the image pixel map.
let pixelBytesNumber = pixelmap.getPixelBytesNumber();
```
### getDensity<sup>9+</sup>
getDensity():number
Obtains the density of this image pixel map.
**System capability**: SystemCapability.Multimedia.Image.Core
**Return value**
| Type | Description |
| ------ | --------------- |
| number | Density of the image pixel map.|
**Example**
```js
let getDensity = pixelmap.getDensity();
```
### opacity<sup>9+</sup>
opacity(rate: number, callback: AsyncCallback\<void>): void
Sets an opacity rate for this image pixel map. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ------------------------------ |
| rate | number | Yes | Opacity rate to set. The value ranges from 0 to 1. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
async function () {
await pixelMap.opacity(0.5);
}
```
### opacity<sup>9+</sup>
opacity(rate: number): Promise\<void>
Sets an opacity rate for this image pixel map. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------ | ---- | --------------------------- |
| rate | number | Yes | Opacity rate to set. The value ranges from 0 to 1.|
**Return value**
| Type | Description |
| -------------- | ----------------------------------------------- |
| Promise\<void> | Promise used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
async function () {
await pixelMap.opacity(0.5);
}
```
### createAlphaPixelmap<sup>9+</sup>
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.
**System capability**: SystemCapability.Multimedia.Image.Core
**Return value**
| Type | Description |
| -------------------------------- | --------------------------- |
| Promise\<[PixelMap](#pixelmap7)> | Promise used to return the **PixelMap** object.|
**Example**
```js
pixelMap.createAlphaPixelmap(async (err, alphaPixelMap) => {
if (alphaPixelMap == undefined) {
console.info('Failed to obtain new pixel map.');
} else {
console.info('Succeed in obtaining new pixel map.');
}
})
```
### createAlphaPixelmap<sup>9+</sup>
createAlphaPixelmap(callback: AsyncCallback\<PixelMap>): void
Creates a **PixelMap** object that contains only the alpha channel information. This object can be used for the shadow effect. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------ | ---- | ------------------------ |
| callback | AsyncCallback\<PixelMap> | Yes | Callback used to return the **PixelMap** object.|
**Example**
```js
let pixelMap = await imageSource.createPixelMap();
if (pixelMap != undefined) {
pixelMap.createAlphaPixelmap(async (err, alphaPixelMap) => {
console.info('Failed to obtain new pixel map.');
})
} else {
console.info('Succeed in obtaining new pixel map.');
}
```
### scale<sup>9+</sup>
scale(x: number, y: number, callback: AsyncCallback\<void>): void
Scales this image based on the input width and height. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ------------------------------- |
| x | number | Yes | Scaling ratio of the width.|
| y | number | Yes | Scaling ratio of the height.|
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned. |
**Example**
```js
async function () {
await pixelMap.scale(2.0, 1.0);
}
```
### scale<sup>9+</sup>
scale(x: number, y: number): Promise\<void>
Scales this image based on the input width and height. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------ | ---- | ------------------------------- |
| x | number | Yes | Scaling ratio of the width.|
| y | number | Yes | Scaling ratio of the height.|
**Return value**
| Type | Description |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
async function () {
await pixelMap.scale(2.0, 1.0);
}
```
### translate<sup>9+</sup>
translate(x: number, y: number, callback: AsyncCallback\<void>): void
Translates this image based on the input coordinates. This API uses an asynchronous callback to return the result.
**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. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
async function () {
await pixelMap.translate(3.0, 1.0);
}
```
### translate<sup>9+</sup>
translate(x: number, y: number): Promise\<void>
Translates this image based on the input coordinates. This API uses a promise to return the result.
**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**
```js
async function () {
await pixelMap.translate(3.0, 1.0);
}
```
### rotate<sup>9+</sup>
rotate(angle: number, callback: AsyncCallback\<void>): void
Rotates this image based on the input angle. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ----------------------------- |
| angle | number | Yes | Angle to rotate. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
async function () {
await pixelMap.rotate(90.0);
}
```
### rotate<sup>9+</sup>
rotate(angle: number): Promise\<void>
Rotates this image based on the input angle. This API uses a promise to return the result.
**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**
```js
async function () {
await pixelMap.rotate(90.0);
}
```
### flip<sup>9+</sup>
flip(horizontal: boolean, vertical: boolean, callback: AsyncCallback\<void>): void
Flips this image horizontally or vertically, or both. This API uses an asynchronous callback to return the result.
**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. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
async function () {
await pixelMap.flip(false, true);
}
```
### flip<sup>9+</sup>
flip(horizontal: boolean, vertical: boolean): Promise\<void>
Flips this image horizontally or vertically, or both. This API uses a promise to return the result.
**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**
```js
async function () {
await pixelMap.flip(false, true);
}
```
### crop<sup>9+</sup>
crop(region: Region, callback: AsyncCallback\<void>): void
Crops this image based on the input size. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ----------------------------- |
| region | [Region](#region7) | Yes | Size of the image after cropping. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result. If the operation fails, an error message is returned.|
**Example**
```js
async function () {
await pixelMap.crop(3x3);
}
```
### crop<sup>9+</sup>
crop(region: Region): Promise\<void>
Crops this image based on the input size. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------------------ | ---- | ----------- |
| region | [Region](#region7) | Yes | Size of the image after cropping.|
**Return value**
| Type | Description |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
async function () {
await pixelMap.crop(3x3);
}
```
### release<sup>7+</sup>
release():Promise\<void>
Releases this **PixelMap** object. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Return value**
| Type | Description |
| -------------- | ------------------ |
| Promise\<void> | Promise used to return the operation result.|
| -------------- | ------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
const color = new ArrayBuffer(96);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
let opts = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts, (pixelmap) => {
pixelmap.release().then(() => {
......@@ -483,25 +876,23 @@ release(callback: AsyncCallback\<void>): void
Releases this **PixelMap** object. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ------------------ |
| callback | AsyncCallback\<void> | Yes | Callback used to return the operation result.|
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
const color = new ArrayBuffer(96);
let bufferArr = new Unit8Array(color);
let bufferArr = new Uint8Array(color);
let opts = { editable: true, pixelFormat: 3, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts, (pixelmap) => {
pixelmap.release().then(() => {
console.log('Succeeded in releasing pixelmap object.');
}).catch(error => {
console.log('Failed to release pixelmap object.');
})
})
```
......@@ -512,7 +903,7 @@ createImageSource(uri: string): ImageSource
Creates an **ImageSource** instance based on the URI.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -533,18 +924,45 @@ let path = this.context.getApplicationContext().fileDirs + "test.jpg";
const imageSourceApi = image.createImageSource(path);
```
## image.createImageSource<sup>9+</sup>
createImageSource(uri: string, options: SourceOptions): ImageSource
Creates an **ImageSource** instance based on the URI.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------------------------------- | ---- | ----------------------------------- |
| uri | string | Yes | Image path. Currently, only the application sandbox path is supported. |
| options | [SourceOptions](#sourceoptions9) | Yes | Image properties, including the image index and default property value.|
**Return value**
| Type | Description |
| --------------------------- | -------------------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns **undefined** otherwise.|
**Example**
```js
const imageSourceApi = image.createImageSource('/sdcard/test.jpg');
```
## image.createImageSource<sup>7+</sup>
createImageSource(fd: number): ImageSource
Creates an **ImageSource** instance based on the file descriptor.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------ | ---- | -------------- |
| ------ | ------ | ---- | ------------- |
| fd | number | Yes | File descriptor.|
**Return value**
......@@ -559,13 +977,144 @@ Creates an **ImageSource** instance based on the file descriptor.
const imageSourceApi = image.createImageSource(0);
```
## image.createImageSource<sup>9+</sup>
createImageSource(fd: number, options: SourceOptions): ImageSource
Creates an **ImageSource** instance based on the file descriptor.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------------------------------- | ---- | ----------------------------------- |
| fd | number | Yes | File descriptor. |
| options | [SourceOptions](#sourceoptions9) | Yes | Image properties, including the image index and default property value.|
**Return value**
| Type | Description |
| --------------------------- | -------------------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns **undefined** otherwise.|
**Example**
```js
const imageSourceApi = image.createImageSource(fd);
```
## image.createImageSource<sup>9+</sup>
createImageSource(buf: ArrayBuffer): ImageSource
Creates an **ImageSource** instance based on the buffer.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ----------- | ---- | ---------------- |
| buf | ArrayBuffer | Yes | Array of image buffers.|
**Example**
```js
const buf = new ArrayBuffer(96);
const imageSourceApi = image.createImageSource(buf);
```
## image.createImageSource<sup>9+</sup>
createImageSource(buf: ArrayBuffer, options: SourceOptions): ImageSource
Creates an **ImageSource** instance based on the buffer.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | -------------------------------- | ---- | ------------------------------------ |
| buf | ArrayBuffer | Yes | Array of image buffers. |
| options | [SourceOptions](#sourceoptions9) | Yes | Image properties, including the image index and default property value.|
**Return value**
| Type | Description |
| --------------------------- | -------------------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns **undefined** otherwise.|
**Example**
```js
const data = new ArrayBuffer(112);
const imageSourceApi = image.createImageSource(data);
```
## image.CreateIncrementalSource<sup>9+</sup>
CreateIncrementalSource(buf: ArrayBuffer): ImageSource
Creates an **ImageSource** instance in incremental mode based on the buffer.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------------| ---- | ----------|
| buf | ArrayBuffer | Yes | Incremental data.|
**Return value**
| Type | Description |
| --------------------------- | --------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns undefined otherwise.|
**Example**
```js
const buf = new ArrayBuffer(96);
const imageSourceApi = image.CreateIncrementalSource(buf);
```
## image.CreateIncrementalSource<sup>9+</sup>
CreateIncrementalSource(buf: ArrayBuffer, options?: SourceOptions): ImageSource
Creates an **ImageSource** instance in incremental mode based on the buffer.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------------------------------- | ---- | ------------------------------------ |
| buf | ArrayBuffer | Yes | Incremental data. |
| options | [SourceOptions](#sourceoptions9) | No | Image properties, including the image index and default property value.|
**Return value**
| Type | Description |
| --------------------------- | --------------------------------- |
| [ImageSource](#imagesource) | Returns the **ImageSource** instance if the operation is successful; returns undefined otherwise.|
**Example**
```js
const buf = new ArrayBuffer(96);
const imageSourceApi = image.CreateIncrementalSource(buf);
```
## ImageSource
Provides APIs to obtain image information. Before calling any API in **ImageSource**, you must use **createImageSource** to create an **ImageSource** instance.
### Attributes
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
| Name | Type | Readable| Writable| Description |
| ---------------- | -------------- | ---- | ---- | ------------------------------------------------------------ |
......@@ -577,7 +1126,7 @@ getImageInfo(index: number, callback: AsyncCallback\<ImageInfo>): void
Obtains information about an image with the specified index. This API uses an asynchronous callback to return the information.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -604,7 +1153,7 @@ getImageInfo(callback: AsyncCallback\<ImageInfo>): void
Obtains information about this image. This API uses an asynchronous callback to return the information.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -626,7 +1175,7 @@ getImageInfo(index?: number): Promise\<ImageInfo>
Obtains information about an image with the specified index. This API uses a promise to return the image information.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -657,7 +1206,7 @@ getImageProperty(key:string, options?: GetImagePropertyOptions): Promise\<string
Obtains the value of a property with the specified index in this image. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -669,7 +1218,7 @@ Obtains the value of a property with the specified index in this image. This API
**Return value**
| Type | Description |
| ---------------- | ------------------------------------------------------------ |
| ---------------- | ----------------------------------------------------------------- |
| Promise\<string> | Promise used to return the property value. If the operation fails, the default value is returned.|
**Example**
......@@ -687,7 +1236,7 @@ getImageProperty(key:string, callback: AsyncCallback\<string>): void
Obtains the value of a property with the specified index in this image. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -714,12 +1263,12 @@ getImageProperty(key:string, options: GetImagePropertyOptions, callback: AsyncCa
Obtains the value of a property in this image. This API uses an asynchronous callback to return the property value in a string.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------------------------------------- | ---- | ------------------------------------------------------------ |
| -------- | ---------------------------------------------------- | ---- | ------------------------------------------------------------- |
| key | string | Yes | Name of the property. |
| options | [GetImagePropertyOptions](#getimagepropertyoptions7) | Yes | Image properties, including the image index and default property value. |
| callback | AsyncCallback\<string> | Yes | Callback used to return the property value. If the operation fails, the default value is returned.|
......@@ -737,13 +1286,128 @@ imageSourceApi.getImageProperty("BitsPerSample",property,(error,data) => {
})
```
### modifyImageProperty<sup>9+</sup>
modifyImageProperty(key: string, value: string): Promise\<void>
Modifies the value of a property in this image. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------ | ---- | ------------ |
| key | string | Yes | Name of the property.|
| value | string | Yes | New value of the property. |
**Return value**
| Type | Description |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
imageSourceApi.modifyImageProperty("ImageWidth", "120")
.then(() => {
const w = imageSourceApi.getImageProperty("ImageWidth")
console.info('w', w);
})
```
### modifyImageProperty<sup>9+</sup>
modifyImageProperty(key: string, value: string, callback: AsyncCallback\<void>): void
Modifies the value of a property in this image. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------- | ---- | ------------------------------ |
| key | string | Yes | Name of the property. |
| value | string | Yes | New value of the property. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
imageSourceApi.modifyImageProperty("ImageWidth", "120",() => {})
```
### updateData<sup>9+</sup>
updateData(buf: ArrayBuffer, isFinished: boolean, value: number, length: number): Promise\<void>
Updates incremental data. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| ---------- | ----------- | ---- | ------------ |
| buf | ArrayBuffer | Yes | Incremental data. |
| isFinished | boolean | Yes | Whether the update is complete.|
| value | number | No | Offset for data reading. |
| length | number | No | Array length. |
**Return value**
| Type | Description |
| -------------- | -------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
const array = new ArrayBuffer(100);
imageSourceIncrementalSApi.updateData(array, false, 0, 10).then(data => {
console.info('Succeeded in updating data.');
})
```
### updateData<sup>9+</sup>
updateData(buf: ArrayBuffer, isFinished: boolean, value: number, length: number, callback: AsyncCallback\<void>): void
Updates incremental data. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
| Name | Type | Mandatory| Description |
| ---------- | ------------------- | ---- | -------------------- |
| buf | ArrayBuffer | Yes | Incremental data. |
| isFinished | boolean | Yes | Whether the update is complete. |
| value | number | No | Offset for data reading. |
| length | number | No | Array length. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
const array = new ArrayBuffer(100);
imageSourceIncrementalSApi.updateData(array, false, 0, 10,(error,data )=> {
if(data !== undefined){
console.info('Succeeded in updating data.');
}
})
```
### createPixelMap<sup>7+</sup>
createPixelMap(options?: DecodingOptions): Promise\<PixelMap>
Creates a **PixelMap** object based on image decoding parameters. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -773,7 +1437,7 @@ createPixelMap(callback: AsyncCallback\<PixelMap>): void
Creates a **PixelMap** object based on the default parameters. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -784,11 +1448,9 @@ Creates a **PixelMap** object based on the default parameters. This API uses an
**Example**
```js
imageSourceApi.createPixelMap(pixelmap => {
console.log('Succeeded in creating pixelmap object.');
}).catch(error => {
console.log('Failed to create pixelmap object.');
})
imageSourceApi.createPixelMap((err, pixelmap) => {
console.info('Succeeded in creating pixelmap object.');
})
```
### createPixelMap<sup>7+</sup>
......@@ -797,7 +1459,7 @@ createPixelMap(options: DecodingOptions, callback: AsyncCallback\<PixelMap>): vo
Creates a **PixelMap** object based on image decoding parameters. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -821,7 +1483,7 @@ release(callback: AsyncCallback\<void>): void
Releases this **ImageSource** instance. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Parameters**
......@@ -843,13 +1505,13 @@ release(): Promise\<void>
Releases this **ImageSource** instance. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
**Return value**
| Type | Description |
| -------------- | --------------------------- |
| Promise\<void> | Promise used to return the operation result.|
| Promise\<void> | Promise used to return the result.|
**Example**
......@@ -867,7 +1529,7 @@ createImagePacker(): ImagePacker
Creates an **ImagePacker** instance.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
**Return value**
......@@ -887,7 +1549,7 @@ Provide APIs to pack images. Before calling any API in **ImagePacker**, you must
### Attributes
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
| Name | Type | Readable| Writable| Description |
| ---------------- | -------------- | ---- | ---- | -------------------------- |
......@@ -899,7 +1561,7 @@ packing(source: ImageSource, option: PackingOption, callback: AsyncCallback\<Arr
Packs an image. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
**Parameters**
......@@ -923,7 +1585,7 @@ packing(source: ImageSource, option: PackingOption): Promise\<ArrayBuffer>
Packs an image. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
**Parameters**
......@@ -935,7 +1597,7 @@ Packs an image. This API uses a promise to return the result.
**Return value**
| Type | Description |
| :--------------------------- | :-------------------------------------------- |
| ---------------------------- | --------------------------------------------- |
| Promise\<ArrayBuffer> | Promise used to return the packed data.|
**Example**
......@@ -957,7 +1619,7 @@ packing(source: PixelMap, option: PackingOption, callback: AsyncCallback\<ArrayB
Packs an image. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
**Parameters**
......@@ -974,8 +1636,6 @@ let packOpts = { format:"image/jpeg", quality:98 }
const pixelMapApi = new ArrayBuffer(400);
imagePackerApi.packing(pixelMapApi, packOpts, data => {
console.log('Succeeded in packing the image.');
}).catch(error => {
console.log('Failed to pack the image.');
})
```
......@@ -985,7 +1645,7 @@ packing(source: PixelMap, option: PackingOption): Promise\<ArrayBuffer>
Packs an image. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
**Parameters**
......@@ -997,7 +1657,7 @@ Packs an image. This API uses a promise to return the result.
**Return value**
| Type | Description |
| :--------------------------- | :-------------------------------------------- |
| --------------------- | -------------------------------------------- |
| Promise\<ArrayBuffer> | Promise used to return the packed data.|
**Example**
......@@ -1019,7 +1679,7 @@ release(callback: AsyncCallback\<void>): void
Releases this **ImagePacker** instance. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
**Parameters**
......@@ -1041,12 +1701,12 @@ release(): Promise\<void>
Releases this **ImagePacker** instance. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
**Return value**
| Type | Description |
| :------------- | :------------------------------------------------------ |
| -------------- | ------------------------------------------------------ |
| Promise\<void> | Promise used to return the instance release result. If the operation fails, an error message is returned.|
**Example**
......@@ -1099,10 +1759,10 @@ Before calling any APIs in **ImageReceiver**, you must create an **ImageReceiver
**System capability**: SystemCapability.Multimedia.Image.ImageReceiver
| Name | Type | Readable| Writable| Description |
| --------------------- | ---------------------------- | ---- | ---- | ------------------ |
| size<sup>9+</sup> | [Size](#size) | Yes | No | Image size. |
| capacity<sup>9+</sup> | number | Yes | No | Maximum number of images that can be accessed at the same time.|
| format<sup>9+</sup> | [ImageFormat](#imageformat9) | Yes | No | Image format. |
| -------- | ---------------------------- | ---- | ---- | ------------------ |
| size | [Size](#size) | Yes | No | Image size. |
| capacity | number | Yes | No | Maximum number of images that can be accessed at the same time.|
| format | [ImageFormat](#imageformat9) | Yes | No | Image format. |
### getReceivingSurfaceId<sup>9+</sup>
......@@ -1192,7 +1852,7 @@ Reads the latest image from the **ImageReceiver** instance. This API uses a prom
| Type | Description |
| ------------------------- | ------------------ |
| Promise<[Image](#image8)> | Promise used to return the latest image.|
| Promise<[Image](#image9)> | Promise used to return the latest image.|
**Example**
......@@ -1328,10 +1988,10 @@ Provides APIs for basic image operations, including obtaining image information
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Type | Readable| Writable| Description |
| --------------------- | ------------------ | ---- | ---- | -------------------------------------------------- |
| clipRect<sup>9+</sup> | [Region](#region7) | Yes | Yes | Image area to be cropped. |
| size<sup>9+</sup> | [Size](#size) | Yes | No | Image size. |
| format<sup>9+</sup> | number | Yes | No | Image format. For details, see [PixelMapFormat](#pixelmapformat7).|
| -------- | ------------------ | ---- | ---- | -------------------------------------------------- |
| clipRect | [Region](#region7) | Yes | Yes | Image area to be cropped. |
| size | [Size](#size) | Yes | No | Image size. |
| format | number | Yes | No | Image format. For details, see [PixelMapFormat](#pixelmapformat7).|
### getComponent<sup>9+</sup>
......@@ -1407,8 +2067,6 @@ The corresponding resources must be released before another image arrives.
```js
img.release(() =>{
console.log('release succeeded.');
}).catch(error => {
console.log('release failed.');
})
```
......@@ -1442,7 +2100,7 @@ img.release().then(() =>{
Describes area information in an image.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Type | Readable| Writable| Description |
| ------ | ------------------ | ---- | ---- | ------------------------------------------------------------ |
......@@ -1455,7 +2113,7 @@ Describes area information in an image.
Describes image information.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name| Type | Readable| Writable| Description |
| ---- | ------------- | ---- | ---- | ---------- |
......@@ -1465,7 +2123,7 @@ Describes image information.
Describes the size of an image.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Type | Readable| Writable| Description |
| ------ | ------ | ---- | ---- | -------------- |
......@@ -1476,19 +2134,20 @@ Describes the size of an image.
Enumerates the pixel formats of images.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Default Value| Description |
| --------- | ------ | ----------------- |
| ---------------------- | ------ | ----------------- |
| UNKNOWN | 0 | Unknown format. |
| RGBA_8888 | 3 | RGBA_8888.|
| RGB_565 | 2 | RGB_565. |
| RGBA_8888 | 3 | RGBA_8888.|
| BGRA_8888<sup>9+</sup> | 4 | BGRA_8888.|
## AlphaType<sup>9+</sup>
Enumerates the alpha types of images.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Default Value| Description |
| -------- | ------ | ----------------------- |
......@@ -1501,21 +2160,34 @@ Enumerates the alpha types of images.
Enumerates the scale modes of images.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Default Value| Description |
| --------------- | ------ | -------------------------------------------------- |
| CENTER_CROP | 1 | Scales the image so that it fills the requested bounds of the target and crops the extra.|
| FIT_TARGET_SIZE | 2 | Reduces the image size to the dimensions of the target. |
## SourceOptions<sup>9+</sup>
Defines image source initialization options.
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Type | Readable| Writable| Description |
| ----------------- | ---------------------------------- | ---- | ---- | ------------------ |
| sourceDensity | number | Yes | Yes | Density of the image source.|
| sourcePixelFormat | [PixelMapFormat](#pixelmapformat7) | Yes | Yes | Pixel format of the image source. |
| sourceSize | [Size](#size) | Yes | Yes | Pixel size of the image source. |
## InitializationOptions<sup>8+</sup>
Defines pixel map initialization options.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Type | Readable| Writable| Description |
| ---------------------- | ---------------------------------- | ---- | ---- | -------------- |
| ------------------------ | ---------------------------------- | ---- | ---- | -------------- |
| alphaType<sup>9+</sup> | [AlphaType](#alphatype9) | Yes | Yes | Alpha type. |
| editable | boolean | Yes | Yes | Whether the image is editable. |
| pixelFormat | [PixelMapFormat](#pixelmapformat7) | Yes | Yes | Pixel map format. |
......@@ -1526,7 +2198,7 @@ Defines pixel map initialization options.
Defines image decoding options.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
| Name | Type | Readable| Writable| Description |
| ------------------ | ---------------------------------- | ---- | ---- | ---------------- |
......@@ -1542,7 +2214,7 @@ Defines image decoding options.
Describes region information.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name| Type | Readable| Writable| Description |
| ---- | ------------- | ---- | ---- | ------------ |
......@@ -1554,10 +2226,10 @@ Describes region information.
Defines the option for image packing.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImagePacker
| Name | Type | Readable| Writable| Description |
| ------- | ------ | ---- | ---- | -------------- |
| ------- | ------ | ---- | ---- | --------------------------------------------------- |
| format | string | Yes | Yes | Format of the packed image. |
| quality | number | Yes | Yes | Quality of the output image during JPEG encoding. The value ranges from 1 to 100.|
......@@ -1565,7 +2237,7 @@ Defines the option for image packing.
Describes image properties.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.ImageSource
| Name | Type | Readable| Writable| Description |
| ------------ | ------ | ---- | ---- | ------------ |
......@@ -1576,18 +2248,18 @@ Describes image properties.
Describes the exchangeable image file format (Exif) information of an image.
**System capability**: SystemCapability.Multimedia.Image
**System capability**: SystemCapability.Multimedia.Image.Core
| Name | Default Value | Description |
| ----------------- | ----------------- | -------------------- |
| ----------------- | ----------------------- | ------------------------ |
| BITS_PER_SAMPLE | "BitsPerSample" | Number of bits per pixel. |
| ORIENTATION | "Orientation" | Image orientation. |
| IMAGE_LENGTH | "ImageLength" | Image length. |
| IMAGE_WIDTH | "ImageWidth" | Image width. |
| GPS_LATITUDE | "GPSLatitude" | Image latitude. |
| GPS_LONGITUDE | "GPSLongitude" | Image longitude. |
| GPS_LATITUDE_REF | "GPSLatitudeRef" | Latitude reference, for example, N or S.|
| GPS_LONGITUDE_REF | "GPSLongitudeRef" | Longitude reference, for example, W or E.|
| GPS_LATITUDE_REF | "GPSLatitudeRef" | Latitude reference, for example, N or S. |
| GPS_LONGITUDE_REF | "GPSLongitudeRef" | Longitude reference, for example, W or E. |
## ImageFormat<sup>9+</sup>
......@@ -1625,3 +2297,45 @@ Describes the color components of an image.
| rowStride | number | Yes | No | Row stride. |
| pixelStride | number | Yes | No | Pixel stride. |
| byteBuffer | ArrayBuffer | Yes | No | Component buffer.|
## ResponseCode
Enumerates the response codes returned upon build errors.
| Name | Value | Description |
| ----------------------------------- | -------- | --------------------------------------------------- |
| ERR_MEDIA_INVALID_VALUE | -1 | Invalid value. |
| SUCCESS | 0 | Operation successful. |
| ERROR | 62980096 | Operation failed. |
| ERR_IPC | 62980097 | IPC error. |
| ERR_SHAMEM_NOT_EXIST | 62980098 | The shared memory does not exist. |
| ERR_SHAMEM_DATA_ABNORMAL | 62980099 | The shared memory is abnormal. |
| ERR_IMAGE_DECODE_ABNORMAL | 62980100 | An error occurs during image decoding. |
| ERR_IMAGE_DATA_ABNORMAL | 62980101 | The input image data is incorrect. |
| ERR_IMAGE_MALLOC_ABNORMAL | 62980102 | An error occurs during image memory allocation. |
| ERR_IMAGE_DATA_UNSUPPORT | 62980103 | Unsupported image type. |
| ERR_IMAGE_INIT_ABNORMAL | 62980104 | An error occurs during image initialization. |
| ERR_IMAGE_GET_DATA_ABNORMAL | 62980105 | An error occurs during image data retrieval. |
| ERR_IMAGE_TOO_LARGE | 62980106 | The image data is too large. |
| ERR_IMAGE_TRANSFORM | 62980107 | An error occurs during image transformation. |
| ERR_IMAGE_COLOR_CONVERT | 62980108 | An error occurs during image color conversion. |
| ERR_IMAGE_CROP | 62980109 | An error occurs during image cropping. |
| ERR_IMAGE_SOURCE_DATA | 62980110 | The image source data is incorrect. |
| ERR_IMAGE_SOURCE_DATA_INCOMPLETE | 62980111 | The image source data is incomplete. |
| ERR_IMAGE_MISMATCHED_FORMAT | 62980112 | The image format does not match. |
| ERR_IMAGE_UNKNOWN_FORMAT | 62980113 | Unknown image format. |
| ERR_IMAGE_SOURCE_UNRESOLVED | 62980114 | The image source is not parsed. |
| ERR_IMAGE_INVALID_PARAMETER | 62980115 | Invalid image parameter. |
| ERR_IMAGE_DECODE_FAILED | 62980116 | Decoding failed. |
| ERR_IMAGE_PLUGIN_REGISTER_FAILED | 62980117 | Failed to register the plug-in. |
| ERR_IMAGE_PLUGIN_CREATE_FAILED | 62980118 | Failed to create the plug-in. |
| ERR_IMAGE_ENCODE_FAILED | 62980119 | Failed to encode the image. |
| ERR_IMAGE_ADD_PIXEL_MAP_FAILED | 62980120 | Failed to add the image pixel map. |
| ERR_IMAGE_HW_DECODE_UNSUPPORT | 62980121 | Unsupported image hardware decoding. |
| ERR_IMAGE_DECODE_HEAD_ABNORMAL | 62980122 | The image decoding header is incorrect. |
| ERR_IMAGE_DECODE_EXIF_UNSUPPORT | 62980123 | EXIF decoding is not supported. |
| ERR_IMAGE_PROPERTY_NOT_EXIST | 62980124 | The image property does not exist. The error codes for the image start from 150.|
| ERR_IMAGE_READ_PIXELMAP_FAILED | 62980246 | Failed to read the pixel map. |
| ERR_IMAGE_WRITE_PIXELMAP_FAILED | 62980247 | Failed to write the pixel map. |
| ERR_IMAGE_PIXELMAP_NOT_ALLOW_MODIFY | 62980248 | Modification to the pixel map is not allowed. |
| ERR_IMAGE_CONFIG_FAILED | 62980259 | The software parameter setting is incorrect. |
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