网站推广优化技巧,山东能源集团 网站建设,wordpress部署ssl,网站推广是做什么的安卓6.0中使用usb摄像头#xff0c;发现当系统启动完成后再接入usb摄像头#xff0c;此种情况下#xff0c;无法使用系统相机进行预览#xff0c;只有接入usb摄像头后再启动整机才可以使用系统相机进行预览#xff0c;于是把修改过程保留
diff --git a/android/framework…安卓6.0中使用usb摄像头发现当系统启动完成后再接入usb摄像头此种情况下无法使用系统相机进行预览只有接入usb摄像头后再启动整机才可以使用系统相机进行预览于是把修改过程保留
diff --git a/android/frameworks/av/services/camera/libcameraservice/CameraService.cpp b/android/frameworks/av/services/camera/libcameraservice/CameraService.cpp
index 7c4594fa4b..8901ebe55a 100644
--- a/android/frameworks/av/services/camera/libcameraservice/CameraService.cppb/android/frameworks/av/services/camera/libcameraservice/CameraService.cpp-413,10 413,24 int32_t CameraService::getNumberOfCameras() {int32_t CameraService::getNumberOfCameras(int type) {ATRACE_CALL();bool hasFirstRef false;char value[PROPERTY_VALUE_MAX];switch (type) {case CAMERA_TYPE_BACKWARD_COMPATIBLE:ALOGD(getNumberOfCamerasgetNumberOfCameras CAMERA_TYPE_BACKWARD_COMPATIBLE%d,mNumberOfNormalCameras);if(0 mNumberOfNormalCameras) {ALOGE(No camera be found ! check again...);onFirstRef();hasFirstRef true;}property_get(persist.sys.usbcamera.status, value, );if( (strcmp(value, add) 0) || (strcmp(value, remove) 0) ) {ALOGD(update camera for usb action);if(!hasFirstRef) onFirstRef();}return mNumberOfNormalCameras;case CAMERA_TYPE_ALL:ALOGD(getNumberOfCamerasgetNumberOfCameras CAMERA_TYPE_ALL);return mNumberOfCameras;default:ALOGW(%s: Unknown camera type %d, returning 0,
diff --git a/android/frameworks/base/services/usb/java/com/android/server/usb/UsbHostManager.java b/android/frameworks/base/services/usb/java/com/android/server/usb/UsbHostManager.java
index 965341e418..6db85c6212 100644
--- a/android/frameworks/base/services/usb/java/com/android/server/usb/UsbHostManager.javab/android/frameworks/base/services/usb/java/com/android/server/usb/UsbHostManager.java-33,6 33,8 import java.io.FileDescriptor;import java.io.PrintWriter;import java.util.ArrayList;import java.util.HashMap;
import android.os.SystemClock;
import android.os.SystemProperties;/*** UsbHostManager manages USB state in host mode.-62,6 64,9 public class UsbHostManager {GuardedBy(mLock)private UsbSettingsManager mCurrentSettings;private long mLastUsbEvent 0;private String mLastUsbAction ;
public UsbHostManager(Context context, UsbAlsaManager alsaManager) {mContext context;-224,6 229,7 public class UsbHostManager {Slog.d(TAG, Added device mNewDevice);getCurrentSettings().deviceAttached(mNewDevice);mUsbAlsaManager.usbDeviceAdded(mNewDevice);checkUsbCameraStatus(mNewDevice, true);} else {Slog.e(TAG, mNewDevice is null in endUsbDeviceAdded);}-243,6 249,36 public class UsbHostManager {if (device ! null) {mUsbAlsaManager.usbDeviceRemoved(device);getCurrentSettings().deviceDetached(device);checkUsbCameraStatus(device, false);}}}private void checkUsbCameraStatus(UsbDevice device, boolean added) {if (device ! null) {String devicename device.getDeviceName();String productname device.getProductName();if ((devicename ! null devicename.toLowerCase().contains(cam)) ||(productname ! null productname.toLowerCase().contains(cam)) ) {try {if (mLastUsbAction ! null mLastUsbAction.equals(added? add : remove) SystemClock.uptimeMillis() - mLastUsbEvent 1200) {Slog.i(TAG, USB HOST EVENT send double, ignore this!);return;}} catch (Exception e) {e.printStackTrace();}mLastUsbAction added? add : remove;mLastUsbEvent SystemClock.uptimeMillis();if (!added){Slog.d(TAG,usb camera removed);SystemProperties.set(persist.sys.usbcamera.status,remove);} else {Slog.d(TAG,usb camera added);SystemProperties.set(persist.sys.usbcamera.status,add);}int num android.hardware.Camera.getNumberOfCameras();SystemProperties.set(persist.sys.usbcamera.status,);}}}
