Android camera2 判斷相機功能是否可控的實例

更新時間：2017年03月10日 11:07:42 投稿：jingxian

下面小編就為大家?guī)硪黄狝ndroid camera2 判斷相機功能是否可控的實例。小編覺得挺不錯的，現(xiàn)在就分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

Android Camera2 可調(diào)功能適配

首先獲取到設備等級：

Float hardwareLevel = mCameraCharacteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);

LEGACY < LIMITED < FULL < LEVEL_3. 越靠右邊權限越大

•INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2
•INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0
•INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1
•INFO_SUPPORTED_HARDWARE_LEVEL_3 = 3

在相應的等級下面會有各自支持的功能，LEGACY為最低權限

在LIMITED中

Additional capabilities may optionally be supported by a LIMITED-level device, and can be checked for in *android.request.availableCapabilities*.

android.request.availableCapabilities

介紹：List of capabilities that this camera device advertises as fully supporting.

int[] ints = mCameraCharacteristics.get(CameraCharacteristics.REQUEST_AVAILABLE_CAPABILITIES);

Possible values:

•BACKWARD_COMPATIBLE
•MANUAL_SENSOR
•MANUAL_POST_PROCESSING
•RAW
•PRIVATE_REPROCESSING
•READ_SENSOR_SETTINGS
•BURST_CAPTURE
•YUV_REPROCESSING
•DEPTH_OUTPUT
•CONSTRAINED_HIGH_SPEED_VIDEO

For example manual_semsor:REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR 
The camera device can be manually controlled (3A algorithms such as auto-exposure, and auto-focus can be bypassed). The camera device supports basic manual control of the sensor image acquisition related stages. This means the following controls are guaranteed to be supported: 
Manual frame duration control 
- android.sensor.frameDuration 
- android.sensor.info.maxFrameDuration 
Manual exposure control 
- android.sensor.exposureTime 
- android.sensor.info.exposureTimeRange 
Manual sensitivity control 
- android.sensor.sensitivity 
- android.sensor.info.sensitivityRange 
Manual lens control (if the lens is adjustable) 
- android.lens.* 
Manual flash control (if a flash unit is present) 
- android.flash.* 
Manual black level locking 
- android.blackLevel.lock 
Auto exposure lock 
- android.control.aeLock

這些值對應的特征值舉例：

final String name3 = CaptureRequest.SENSOR_FRAME_DURATION.getName();
name3 -》android.sensor.frameDuration

列出這個的意思是，如果想知道該設備是否支持此功能，可以通過getName()獲取其包名，然后在

mCameraCharacteristics.getAvailableCaptureRequestKeys()；生成的隊列中尋找。

如果有匹配則是可控；

CaptureRequest.LENS_FOCUS_DISTANCE；調(diào)節(jié)焦距
CaptureRequest.CONTROL_AF_MODE；自動對焦模式
CaptureRequest.SENSOR_SENSITIVITY 調(diào)節(jié)iso
CaptureRequest.CONTROL_AE_MODE 自動曝光模式

以上這篇Android camera2 判斷相機功能是否可控的實例就是小編分享給大家的全部內(nèi)容了，希望能給大家一個參考，也希望大家多多支持腳本之家。

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