ZegoTrafficControlProperty
ZegoTrafficControlProperty
当发生流量控制时可供调节的属性（位掩码枚举）
Declared in ZegoExpressDefines.h
属性
ZegoTrafficControlPropertyBasic
ZegoTrafficControlPropertyBasic
ZegoTrafficControlPropertyBasic=(0)基础属性（自适应（降低）视频码率）
ZegoTrafficControlPropertyAdaptiveFPS
ZegoTrafficControlPropertyAdaptiveFPS
ZegoTrafficControlPropertyAdaptiveFPS=(1)自适应（降低）视频帧率
ZegoTrafficControlPropertyAdaptiveResolution
ZegoTrafficControlPropertyAdaptiveResolution
ZegoTrafficControlPropertyAdaptiveResolution=(2)自适应（降低）视频分辨率
ZegoTrafficControlPropertyAdaptiveAudioBitrate
ZegoTrafficControlPropertyAdaptiveAudioBitrate
ZegoTrafficControlPropertyAdaptiveAudioBitrate=(4)自适应（降低）音频码率