This document primarily delineates the process of sharing system sounds. At present, TRTC defaults not to collect the audio of the local application.
Note:
Only Android 10.0 or higher supports sharing system audio.
Initiate system sound sharing
Step 1: Initiate Screen Sharing
Step 2: Initiate Share System Audio
By invoking the TRTCCloud's startSystemAudioLoopback interface, the collected system audio will be automatically mixed into the upstream. Step 3: Terminate Share System Audio
Step 1: Enable the microphone
Within the App, invoke startLocalAudio to kickstart microphone collection, and it's suggested to utilize TRTCAudioQualityDefault for audio quality.
Note:
This action is indispensable; by initiating microphone collection, the App can preserve its functioning even when relegated to the background.
Step 2: Initiate screen sharing
Due to the restrictions of iOS, system sounds can only be collected during screen recording. Therefore, to implement this feature, the iOS screen sharing function must be connected first.
Note:
When starting screen recording, do not light up the microphone icon. Voice collection has already been started in the app.
Step 3: Midway open and close system sound
The system audio capture and screen recording are done concurrently, initiating automatically with the start of the recording and ceasing alongside the recording termination. It is not feasible to independently switch on or mute the system audio.
TRTCCloud proffers the setSystemAudioLoopbackVolume method for system audio volume conditioning. When there is no desire to output the system audio, the volume can be set to 0. 