Dear Wechat
问题背景：在Android平台开发USB Camera功能，希望可以支持微信视频通话打开USB Camera
问题现状：系统如果只有一个USB Camera设备，在视频通话时无法打开，但是扫一扫和好友界面拍摄是OK的
同样的状态下，QQ是支持视频通话的，问下贵团队是否做过类似适配呢
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- RTOS 设备: 小程序/开发/指南/连接硬件能力/音视频通话（for 硬件）/小程序音视频通话 SDK/RTOS 设备/云对云设备端
- 1. 设备要求: 小程序/开发/指南/连接硬件能力/音视频通话（for 硬件）/小程序音视频通话 SDK/RTOS 设备/云对云设备端
- 2. 设备端开发: 小程序/开发/指南/连接硬件能力/音视频通话（for 硬件）/小程序音视频通话 SDK/RTOS 设备/云对云设备端
- 小程序音视频通话 SDK (Linux 设备): 小程序/开发/指南/连接硬件能力/音视频通话（for 硬件）/小程序音视频通话 SDK/Linux 设备
- 1. 设备要求: 小程序/开发/指南/连接硬件能力/音视频通话（for 硬件）/小程序音视频通话 SDK/Linux 设备
07-04 07:38:24.301 26656 26713 I CameraManagerGlobal: Connecting to camera service
07-04 07:38:24.318 26656 26713 W libc : Access denied finding property "vendor.camera.aux.packagelist"
07-04 07:38:24.319 26656 26713 W libc : Access denied finding property "vendor.camera.aux.packagelist"
07-04 07:38:24.323 26656 26670 W libc : Access denied finding property "vendor.camera.aux.packagelist"
[ 2119.541429][T26916] MAIN_MGR: hvdcp_opti Version: 3:0:0
[ 2119.567671][T26916] MAIN_MGR: set keepcaps failed!
[ 2119.568385][T26916] CHG_POLICY_PATH: Failed to get IIO path for MAIN_PSY
[ 2119.580429][T26916] MAIN_MGR: Failed to setup PSY and IIO path
[ 2120.180761][ T1] init: Control message: Could not find 'vendor.qti.data.factory@2.0::IFactory/default' for ctl.interface_start from pid: 427 (/system/bin/hwservicemanager)
[ 2120.198380][ T1] init: Control message: Could not find 'com.qualcomm.qti.uceservice@2.3::IUceService/com.qualcomm.qti.uceservice' for ctl.interface_start from pid: 427 (/system/bin/hwservicemanager)
07-04 07:38:29.895 14915 15041 W libc : Access denied finding property "vendor.camera.aux.packagelist"
07-04 07:38:29.897 14915 15041 I CameraBase: Connect camera (legacy API) - overrideToPortrait 0, forceSlowJpegMode 0
07-04 07:38:29.898 1263 11575 I CameraService: CameraService::connect call (PID 14915 "com.tencent.mm", camera ID 104) and Camera API version 1
07-04 07:38:29.900 1263 11575 I Camera2ClientBase: Camera 104: Opened. Client: com.tencent.mm (PID 14915, UID 10136)
07-04 07:38:29.900 1263 11575 I CameraService: makeClient: Camera1 API (legacy), override to portrait 0, forceSlowJpegMode 0
07-04 07:38:29.906 14915 22873 W libc : Access denied finding property "vendor.camera.aux.packagelist"
07-04 07:38:29.909 26656 26672 W libc : Access denied finding property "vendor.camera.aux.packagelist"
07-04 07:38:30.336 1263 11575 E Camera2-Parameters: Error finding static metadata entry 'android.sensor.info.physicalSize' (f0005)
07-04 07:38:30.337 1263 11575 E Camera2-Parameters: Error finding static metadata entry 'android.distortionCorrection.availableModes' (1b0001)
07-04 07:38:30.337 1263 11575 I Camera2-Parameters: Camera 1: Disabling ZSL mode
07-04 07:38:30.337 1263 11575 I Camera2-Parameters: initialize: allowZslMode: 0 slowJpegMode 1
对比QQ只是没有进行connect call，不清楚应用端是否有特殊请求？