pause abstract method

Future<int?> pause(int effectId)

Pauses the playback of audio effect files.

Return value:

• 0: Success.
• <0: Failure.

Notes:

• After calling RTCAudioEffectPlayer.start to start playing the audio effect file, you can pause the audio effect file by calling this API.
• After calling this API to pause the audio effect file, you can call RTCAudioEffectPlayer.resume to resume playback.

Implementation

Future<int?> pause(int effectId);