[src] Fix bug in resampling checks for online features (#3639)

The --allow-upsample and --allow-downsample options were not handled correctly in the code that handles resampling for computing online features.

Author: entn-at

src/feat/online-feature.cc

@@ -88,10 +88,10 @@ void OnlineGenericBaseFeature<C>::MaybeCreateResampler(
  if (resampler_ != nullptr) {
  KALDI_ASSERT(resampler_->GetInputSamplingRate() == sampling_rate);
  KALDI_ASSERT(resampler_->GetOutputSamplingRate() == expected_sampling_rate);
- } else if (((sampling_rate > expected_sampling_rate) &&
- !computer_.GetFrameOptions().allow_downsample) ||
+ } else if (((sampling_rate < expected_sampling_rate) &&
+ computer_.GetFrameOptions().allow_downsample) ||
  ((sampling_rate > expected_sampling_rate) &&
- !computer_.GetFrameOptions().allow_upsample)) {
+ computer_.GetFrameOptions().allow_upsample)) {
  resampler_.reset(new LinearResample(
  sampling_rate, expected_sampling_rate,
  std::min(sampling_rate / 2, expected_sampling_rate / 2), 6));