- owt默认支持 桌面共享类型的 localstream 添加
- 支持多个localstream的发布。
- videotrack的source看起来是owt 封装实现的
- audiotrack的source 是webrtc自己的
owt 桌面共享stream
/**
@brief Initialize a local screen stream with parameters.
@param parameters Parameters for creating the stream. The stream will
not be impacted if changing parameters after it is created.
@param observer Source callback required for application to specify capture
window/screen source.
@return Pointer to created LocalStream.
*/
static std::shared_ptr