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未验证 提交 fe08de73 编写于 作者: H hanyingjun 提交者： Gitee
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【OpenHarmony开源贡献者计划2022】update zh-cn/application-dev/media/camera.md. 

Signed-off-by: Nhanyingjun <965011183@qq.com>
上级 df7e7793
隐藏空白更改
内联 并排
Showing with 56 addition and 56 deletion
zh-cn/application-dev/media/camera.md
浏览文件 @ fe08de73
......@@ -26,7 +26,7 @@ import image from '@ohos.multimedia.image'
import media from '@ohos.multimedia.media'
import featureAbility from '@ohos.ability.featureAbility'
//创建CameraManager对象
// 创建CameraManager对象
let cameraManager
await camera.getCameraManager(globalThis.Context, (err, manager) => {
if (err) {
......@@ -37,13 +37,13 @@ await camera.getCameraManager(globalThis.Context, (err, manager) => {
cameraManager = manager
})
//注册回调函数监听相机状态变化，获取状态变化的相机信息
// 注册回调函数监听相机状态变化，获取状态变化的相机信息
cameraManager.on('cameraStatus', (cameraStatusInfo) => {
console.log('camera : ' + cameraStatusInfo.camera.cameraId);
console.log('status: ' + cameraStatusInfo.status);
})
//获取相机列表
// 获取相机列表
let cameraArray
await cameraManager.getCameras((err, cameras) => {
if (err) {
......@@ -55,20 +55,20 @@ await cameraManager.getCameras((err, cameras) => {
})
for(let cameraIndex = 0; cameraIndex < cameraArray.length; cameraIndex++) {
console.log('cameraId : ' + cameraArray[cameraIndex].cameraId) //获取相机ID
console.log('cameraPosition : ' + cameraArray[cameraIndex].cameraPosition) //获取相机位置
console.log('cameraType : ' + cameraArray[cameraIndex].cameraType) //获取相机类型
console.log('connectionType : ' + cameraArray[cameraIndex].connectionType) //获取相机连接类型
console.log('cameraId : ' + cameraArray[cameraIndex].cameraId) // 获取相机ID
console.log('cameraPosition : ' + cameraArray[cameraIndex].cameraPosition) // 获取相机位置
console.log('cameraType : ' + cameraArray[cameraIndex].cameraType) // 获取相机类型
console.log('connectionType : ' + cameraArray[cameraIndex].connectionType) // 获取相机连接类型
}
//创建相机输入流
// 创建相机输入流
let cameraInput
await cameraManager.createCameraInput(cameraArray[0].cameraId).then((input) => {
console.log('Promise returned with the CameraInput instance');
cameraInput = input
})
//创建预览输出流
// 创建预览输出流
let previewOutput
camera.createPreviewOutput((globalThis.surfaceId), (err, output) => {
if (err) {
......@@ -79,11 +79,11 @@ camera.createPreviewOutput((globalThis.surfaceId), (err, output) => {
previewOutput = output
});
//创建ImageReceiver对象，并设置照片参数
// 创建ImageReceiver对象，并设置照片参数
let imageReceiver = await image.createImageReceiver(1920, 1080, 4, 8)
//获取照片显示SurfaceId
// 获取照片显示SurfaceId
let photoSurfaceId = await imageReceiver.getReceivingSurfaceId()
//创建拍照输出流
// 创建拍照输出流
let photoOutput
camera.createPhotoOutput((photoSurfaceId), (err, output) => {
if (err) {
......@@ -94,7 +94,7 @@ camera.createPhotoOutput((photoSurfaceId), (err, output) => {
photoOutput = output
});
//创建视频录制的参数
// 创建视频录制的参数
let videoProfile = {
audioBitrate : 48000,
audioChannels : 2,
......@@ -116,13 +116,13 @@ let videoConfig = {
location : { latitude : 30, longitude : 130 },
}
//创建录像输出流
// 创建录像输出流
let videoRecorder
await media.createVideoRecorder().then((recorder) => {
console.log('createVideoRecorder called')
videoRecorder = recorder
})
//设置视频录制的参数
// 设置视频录制的参数
await videoRecorder.prepare(videoConfig)
//获取录像SurfaceId
await videoRecorder.getInputSurface().then((id) => {
......@@ -132,7 +132,7 @@ await videoRecorder.getInputSurface().then((id) => {
```
videoRecorder详细创建方法可参考：[视频录制开发指导](./video-recorder.md)
```js
//创建VideoOutput对象
// 创建VideoOutput对象
let videoOutput
camera.createVideoOutput((surfaceId), (err, output) => {
if (err) {
......@@ -148,14 +148,14 @@ camera.createVideoOutput((surfaceId), (err, output) => {
#### 参数设置
```js
//判断设备是否支持闪光灯
// 判断设备是否支持闪光灯
let flashStatus
await cameraInput.hasFlash().then((status) => {
console.log('Promise returned with the flash light support status:' + status);
flashStatus = status
})
if(flashStatus) {
//判断是否支持自动闪光灯模式
// 判断是否支持自动闪光灯模式
let flashModeStatus
cameraInput.isFlashModeSupported(camera.FlashMode.FLASH_MODE_AUTO, (err, status) => {
if (err) {
......@@ -166,7 +166,7 @@ if(flashStatus) {
flashModeStatus = status
})
if(flashModeStatus) {
//设置自动闪光灯模式
// 设置自动闪光灯模式
cameraInput.setFlashMode(camera.FlashMode.FLASH_MODE_AUTO, (err) => {
if (err) {
console.error('Failed to set the flash mode ${err.message}');
......@@ -177,7 +177,7 @@ if(flashStatus) {
}
}
//判断是否支持连续自动变焦模式
// 判断是否支持连续自动变焦模式
let focusModeStatus
cameraInput.isFocusModeSupported(camera.FocusMode.FOCUS_MODE_CONTINUOUS_AUTO, (err, status) => {
if (err) {
......@@ -188,7 +188,7 @@ cameraInput.isFocusModeSupported(camera.FocusMode.FOCUS_MODE_CONTINUOUS_AUTO, (e
focusModeStatus = status
})
if(focusModeStatus) {
//设置连续自动变焦模式
// 设置连续自动变焦模式
cameraInput.setFocusMode(camera.FocusMode.FOCUS_MODE_CONTINUOUS_AUTO, (err) => {
if (err) {
console.error('Failed to set the focus mode ${err.message}');
......@@ -198,7 +198,7 @@ if(focusModeStatus) {
})
}
//获取相机支持的可变焦距比范围
// 获取相机支持的可变焦距比范围
let zoomRatioRange
cameraInput.getZoomRatioRange((err, range) => {
if (err) {
......@@ -209,7 +209,7 @@ cameraInput.getZoomRatioRange((err, range) => {
zoomRatioRange = range
})
//设置可变焦距比
// 设置可变焦距比
cameraInput.setZoomRatio(zoomRatioRange[0], (err) => {
if (err) {
console.error('Failed to set the zoom ratio value ${err.message}');
......@@ -224,7 +224,7 @@ cameraInput.setZoomRatio(zoomRatioRange[0], (err) => {
##### 创建会话
```js
//创建Context对象
// 创建Context对象
let context = featureAbility.getContext()
//创建会话
......@@ -238,7 +238,7 @@ await camera.createCaptureSession((context), (err, session) => {
captureSession = session
});
//开始配置会话
// 开始配置会话
await captureSession.beginConfig((err) => {
if (err) {
console.error('Failed to start the configuration. ${err.message}');
......@@ -247,7 +247,7 @@ await captureSession.beginConfig((err) => {
console.log('Callback invoked to indicate the begin config success.');
});
//向会话中添加相机输入流
// 向会话中添加相机输入流
await captureSession.addInput(cameraInput, (err) => {
if (err) {
console.error('Failed to add the CameraInput instance. ${err.message}');
......@@ -256,7 +256,7 @@ await captureSession.addInput(cameraInput, (err) => {
console.log('Callback invoked to indicate that the CameraInput instance is added.');
});
//向会话中添加预览输入流
// 向会话中添加预览输入流
await captureSession.addOutput(previewOutput, (err) => {
if (err) {
console.error('Failed to add the PreviewOutput instance ${err.message}');
......@@ -265,7 +265,7 @@ await captureSession.addOutput(previewOutput, (err) => {
console.log('Callback invoked to indicate that the PreviewOutput instance is added.');
});
//向会话中添加拍照输出流
// 向会话中添加拍照输出流
await captureSession.addOutput(photoOutput, (err) => {
if (err) {
console.error('Failed to add the PhotoOutput instance ${err.message}');
......@@ -274,7 +274,7 @@ await captureSession.addOutput(photoOutput, (err) => {
console.log('Callback invoked to indicate that the PhotoOutput instance is added.');
});
//提交会话配置
// 提交会话配置
await captureSession.commitConfig((err) => {
if (err) {
console.error('Failed to commit the configuration. ${err.message}');
......@@ -283,7 +283,7 @@ await captureSession.commitConfig((err) => {
console.log('Callback invoked to indicate the commit config success.');
});
//启动会话
// 启动会话
await captureSession.start().then(() => {
console.log('Promise returned to indicate the session start success.');
})
......@@ -292,7 +292,7 @@ await captureSession.start().then(() => {
##### 切换会话
```js
//停止当前会话
// 停止当前会话
await captureSession.stop((err) => {
if (err) {
console.error('Failed to stop the session ${err.message}');
......@@ -301,7 +301,7 @@ await captureSession.stop((err) => {
console.log('Callback invoked to indicate the session stop success.');
});
//开始配置会话
// 开始配置会话
await captureSession.beginConfig((err) => {
if (err) {
console.error('Failed to start the configuration. ${err.message}');
......@@ -310,7 +310,7 @@ await captureSession.beginConfig((err) => {
console.log('Callback invoked to indicate the begin config success.');
});
//从会话中移除拍照输出流
// 从会话中移除拍照输出流
await captureSession.removeOutput(photoOutput, (err) => {
if (err) {
console.error('Failed to remove the PhotoOutput instance. ${err.message}');
......@@ -319,7 +319,7 @@ await captureSession.removeOutput(photoOutput, (err) => {
console.log('Callback invoked to indicate that the PhotoOutput instance is removed.');
});
//向会话中添加录像输出流
// 向会话中添加录像输出流
await captureSession.addOutput(videoOutput, (err) => {
if (err) {
console.error('Failed to add the VideoOutput instance ${err.message}');
......@@ -328,7 +328,7 @@ await captureSession.addOutput(videoOutput, (err) => {
console.log('Callback invoked to indicate that the VideoOutput instance is added.');
});
//提交会话配置
// 提交会话配置
await captureSession.commitConfig((err) => {
if (err) {
console.error('Failed to commit the configuration. ${err.message}');
......@@ -337,7 +337,7 @@ await captureSession.commitConfig((err) => {
console.log('Callback invoked to indicate the commit config success.');
});
//启动会话
// 启动会话
await captureSession.start().then(() => {
console.log('Promise returned to indicate the session start success.');
})
......@@ -347,10 +347,10 @@ await captureSession.start().then(() => {
```js
let settings = {
quality: camera.QualityLevel.QUALITY_LEVEL_HIGH, //设置图片质量高
rotation: camera.ImageRotation.ROTATION_0 //设置图片旋转角度0
quality: camera.QualityLevel.QUALITY_LEVEL_HIGH, // 设置图片质量高
rotation: camera.ImageRotation.ROTATION_0 // 设置图片旋转角度0
}
//使用当前拍照设置进行拍照
// 使用当前拍照设置进行拍照
photoOutput.capture(settings, (err) => {
if (err) {
console.error('Failed to capture the photo ${err.message}');
......@@ -363,7 +363,7 @@ photoOutput.capture(settings, (err) => {
#### 录像
```js
//启动录像输出流
// 启动录像输出流
videoOutput.start((err) => {
if (err) {
console.error('Failed to start the video output ${err.message}');
......@@ -372,17 +372,17 @@ videoOutput.start((err) => {
console.log('Callback invoked to indicate the video output start success.');
});
//开始录像
// 开始录像
await videoRecorder.start().then(() => {
console.info('videoRecorder start success');
}
//停止录像
// 停止录像
await videoRecorder.stop().then(() => {
console.info('stop success');
}
//停止录像输出流
// 停止录像输出流
await videoOutput.stop((err) => {
if (err) {
console.error('Failed to stop the video output ${err.message}');
......@@ -395,7 +395,7 @@ await videoOutput.stop((err) => {
#### 释放资源
```js
//停止当前会话
// 停止当前会话
await captureSession.stop((err) => {
if (err) {
console.error('Failed to stop the session ${err.message}');
......@@ -403,7 +403,7 @@ await captureSession.stop((err) => {
}
console.log('Callback invoked to indicate the session stop success.');
});
//释放相机输入流
// 释放相机输入流
await cameraInput.release((err) => {
if (err) {
console.error('Failed to release the CameraInput instance ${err.message}');
......@@ -411,7 +411,7 @@ await cameraInput.release((err) => {
}
console.log('Callback invoked to indicate that the CameraInput instance is released successfully.');
});
//释放预览输出流
// 释放预览输出流
await previewOutput.release((err) => {
if (err) {
console.error('Failed to release the PreviewOutput instance ${err.message}');
......@@ -419,7 +419,7 @@ await previewOutput.release((err) => {
}
console.log('Callback invoked to indicate that the PreviewOutput instance is released successfully.');
});
//释放拍照输出流
// 释放拍照输出流
await photoOutput.release((err) => {
if (err) {
console.error('Failed to release the PhotoOutput instance ${err.message}');
......@@ -427,7 +427,7 @@ await photoOutput.release((err) => {
}
console.log('Callback invoked to indicate that the PhotoOutput instance is released successfully.');
});
//释放录像输出流
// 释放录像输出流
await videoOutput.release((err) => {
if (err) {
console.error('Failed to release the VideoOutput instance ${err.message}');
......@@ -435,7 +435,7 @@ await videoOutput.release((err) => {
}
console.log('Callback invoked to indicate that the VideoOutput instance is released successfully.');
});
//释放会话
// 释放会话
await captureSession.release((err) => {
if (err) {
console.error('Failed to release the CaptureSession instance ${err.message}');
......@@ -449,24 +449,24 @@ await captureSession.release((err) => {
预览画面显示需要获取SurfaceId
```js
mXComponentController: XComponentController = new XComponentController //创建XComponentController
mXComponentController: XComponentController = new XComponentController // 创建XComponentController
build() {
Flex() {
XComponent({ //创建XComponent
XComponent({ // 创建XComponent
id: '',
type: 'surface',
libraryname: '',
controller: this.mXComponentController
})
.onload(() => { //设置onload回调
//设置Surface宽高（1920*1080）
.onload(() => { // 设置onload回调
// 设置Surface宽高（1920*1080）
this.mXComponentController.setXComponentSurfaceSize({surfaceWidth:1920,surfaceHeight:1080})
//获取Surface ID
// 获取Surface ID
globalThis.surfaceId = mXComponentController.getXComponentSurfaceId()
})
.width('1920px') //设置XComponent宽度
.height('1080px') //设置XComponent高度
.width('1920px') // 设置XComponent宽度
.height('1080px') // 设置XComponent高度
}
}
```
\ No newline at end of file
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