发布于 2017-03-20 22:45:13 | 294 次阅读 | 评论: 0 | 来源: 网友投递
Android移动端操作系统
Android是一种基于Linux的自由及开放源代码的操作系统，主要使用于移动设备，如智能手机和平板电脑，由Google公司和开放手机联盟领导及开发。尚未有统一中文名称，中国大陆地区较多人使用“安卓”或“安致”。
Android Camera2 可调功能适配
首先获取到设备等级：
Float hardwareLevel = mCameraCharacteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
LEGACY < LIMITED < FULL < LEVEL_3. 越靠右边权限越大
•INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2
•INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0
•INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1
•INFO_SUPPORTED_HARDWARE_LEVEL_3 = 3
在相应的等级下面会有各自支持的功能，LEGACY为最低权限
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
介绍：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 这些值对应的特征值举例：
final String name3 = CaptureRequest.SENSOR_FRAME_DURATION.getName();
name3 -》android.sensor.frameDuration
列出这个的意思是，如果想知道该设备是否支持此功能，可以通过getName()获取其包名，然后在
mCameraCharacteristics.getAvailableCaptureRequestKeys()；生成的队列中寻找。
如果有匹配则是可控；
CaptureRequest.LENS_FOCUS_DISTANCE；调节焦距
CaptureRequest.CONTROL_AF_MODE；自动对焦模式
CaptureRequest.SENSOR_SENSITIVITY 调节iso
CaptureRequest.CONTROL_AE_MODE 自动曝光模式
以上这篇Android camera2 判断相机功能是否可控的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持PHPERZ。