Function openSLstartRecording

src/android/openslesSource.cpp:930–976

}

SLresult openSLstartRecording(opensl_stream2 *p) {
  SLresult result;
  if (p->recorderRecord != NULL) {
    // in case already recording, stop recording and clear buffer queue
    result = (*p->recorderRecord)->SetRecordState(p->recorderRecord, SL_RECORDSTATE_STOPPED);
    if (result != SL_RESULT_SUCCESS) {
      SMILE_ERR(3, "openSL: failed to set recorder state to stopped.");
      return result;
    }
    result = (*p->recorderBufferQueue)->Clear(p->recorderBufferQueue);
    if (result != SL_RESULT_SUCCESS) {
      SMILE_ERR(3, "openSL: failed to clear recorder buffer queue.");
      return result;
    }
    // the current one will be the first to be enqueued, before we wait for the first buffer to be filled
    // in audioIn. This is why we don't enqueue it here (NUM_RECORDING_BUFFERS - 1 in above loop).
    //    p->currentDeviceInputBuffer = NUM_RECORDING_BUFFERS - 1;
   
    // start recording
    result = (*p->recorderRecord)->SetRecordState(p->recorderRecord, SL_RECORDSTATE_RECORDING);
    if (result != SL_RESULT_SUCCESS) {
      SMILE_ERR(3, "openSL: failed to set recorder state to started.");
      return result;
    }
    SMILE_MSG(3, "openSL: recording: set state = recording, success");
    // for streaming recording, we enqueue at least 2 empty buffers to start things off)
    p->currentDeviceInputBuffer = 0;
    p->internalBufferCurW = 0;
    p->internalBufferCurR = 0;
    p->hasNewInternalData_ = 0;
    p->hasNewInputData_ = 0;
    for (int i = 0; i < NUM_RECORDING_BUFFERS /* - 1*/; ++i) {
      result = (*p->recorderBufferQueue)->Enqueue(p->recorderBufferQueue,
          p->deviceInputBuffers[i], p->inBufSamples * sizeof(int16_t));
      // the most likely other result is SL_RESULT_BUFFER_INSUFFICIENT,
      // which for this code example would indicate a programming error
      if (result != SL_RESULT_SUCCESS) {
        SMILE_ERR(3, "openSL: failed to enqueue audio buffer # %i for streaming recording.", i);
        return result;
      }
    }
  } else {
    SMILE_ERR(1, "openSL: no recorder present, cannot start recording");
    return -1;
  }
  return SL_RESULT_SUCCESS;
}

// close the OpenSL IO and destroy the audio engine
void openSLDestroyEngine(opensl_stream2 *p) {