process method

Future<CheetahTranscript> process(List<int>? frame)

Process a frame of pcm audio with the speech-to-text engine.

frame frame of 16-bit integers of 16kHz linear PCM mono audio. The specific array length is obtained from Cheetah via the frameLength field.

returns CheetahTranscript object.

Implementation

Future<CheetahTranscript> process(List<int>? frame) async {
  try {
    Map<String, dynamic> transcript = Map<String, dynamic>.from(await _channel
        .invokeMethod(_NativeFunctions.PROCESS.name,
            {'handle': _handle, 'frame': frame}));

    if (transcript['transcript'] == null) {
      throw CheetahInvalidStateException(
          "field 'transcript' must be always present");
    }

    return CheetahTranscript(
        transcript['transcript'], transcript['isEndpoint']);
  } on PlatformException catch (error) {
    throw cheetahStatusToException(error.code, error.message);
  } on Exception catch (error) {
    throw CheetahException(error.toString());
  }
}