Windows SRTC 音视频 SDK IRTCCustomAudioTrack 自定义音频轨道接口参考
virtual StatusCode pushAudioFrame(int stmtype, unsigned char* buf, int buf_len, long ts) = 0;
// 推送 OPUS 音频帧 IRTCCustomAudioTrack* track = nullptr; engine->getCustomAudioTrack("my_custom_audio", &track); track->pushAudioFrame(0x5355504F, audioData, audioSize, timestamp);