连续开关摄像头2次以上，再次开启会失败
hjywyj opened this issue · comments
open camera failed.
java.lang.UnsupportedOperationException: open failed:result=-1----->id_camera=2267452288;venderId=;productId=;fileDescriptor=;busNum=;devAddr=;usbfs=
Exception：com.jiangdg.usb.USBMonitor.access$1400(USBMonitor.java:59)
com.jiangdg.usb.USBMonitor$UsbControlBlock.(USBMonitor.java:1059)
com.jiangdg.usb.USBMonitor$UsbControlBlock.clone(USBMonitor.java:1091)
com.jiangdg.uvc.UVCCamera.open(UVCCamera.java:193)
com.jiangdg.ausbc.camera.CameraUVC.openCameraInternal(CameraUVC.kt:125)
com.jiangdg.ausbc.MultiCameraClient$ICamera$handleMessage$1$1.onSurfaceTextureAvailable(MultiCameraClient.kt:333)
com.jiangdg.ausbc.render.RenderManager.startRenderScreen(RenderManager.kt:267)
com.jiangdg.ausbc.MultiCameraClient$ICamera.handleMessage(MultiCameraClient.kt:326)
android.os.Handler.dispatchMessage(Handler.java:98)
android.os.Looper.loop(Looper.java:154)
android.os.HandlerThread.run(HandlerThread.java:61)
core message ->Attempt to read from field 'android.hardware.usb.UsbManager com.jiangdg.usb.USBMonitor.mUsbManager' on a null object reference
at com.jiangdg.uvc.UVCCamera.open(UVCCamera.java:217)
at com.jiangdg.ausbc.camera.CameraUVC.openCameraInternal(CameraUVC.kt:125)
at com.jiangdg.ausbc.MultiCameraClient$ICamera$handleMessage$1$1.onSurfaceTextureAvailable(MultiCameraClient.kt:333)
at com.jiangdg.ausbc.render.RenderManager.startRenderScreen(RenderManager.kt:267)
at com.jiangdg.ausbc.MultiCameraClient$ICamera.handleMessage(MultiCameraClient.kt:326)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:154)
at android.os.HandlerThread.run(HandlerThread.java:61)
open camera failed, preview size(PreviewSize(width=640, height=480)) unsupported-> null
call to OpenGL ES API with no current context (logged once per thread)
原因是UsbControlBlock的WeakReference mWeakMonitor和WeakReference mWeakDevice被回收掉了，导致open方法的 ctrlBlock.clone()复制了个null出来，然后空指针异常了
解决方案在onConnectDev->setUsbControlBlock缓存下UsbControlBlock的usbMonitor，每次openCamera前重新调用setUsbControlBlock
大佬，可以把onConnectDev 方法拿出来参考参考吗