Function resampleCB

libraries/lib-builtin-effects/SBSMSBase.cpp:90–136

};

long resampleCB(void *cb_data, SBSMSFrame *data)
{
   ResampleBuf *r = (ResampleBuf*) cb_data;

   auto blockSize = limitSampleBufferSize(
      r->leftTrack->GetBestBlockSize(r->offset),
      r->end - r->offset
   );

   // Get the samples from the tracks and put them in the buffers.
   // I don't know if we can safely propagate errors through sbsms, and it
   // does not seem to let us report error codes, so use this roundabout to
   // stop the effect early.
   try {
      r->leftTrack->GetFloats(
         (r->leftBuffer.get()), r->offset, blockSize);
      r->rightTrack->GetFloats(
         (r->rightBuffer.get()), r->offset, blockSize);
   }
   catch ( ... ) {
      // Save the exception object for re-throw when out of the library
      r->mpException = std::current_exception();
      data->size = 0;
      return 0;
   }

   // convert to sbsms audio format
   for(decltype(blockSize) i=0; i<blockSize; i++) {
      r->buf[i][0] = r->leftBuffer[i];
      r->buf[i][1] = r->rightBuffer[i];
   }

   data->buf = r->buf.get();
   data->size = blockSize;
   if(r->bPitch) {
     float t0 = r->processed.as_float() / r->iface->getSamplesToInput();
     float t1 = (r->processed + blockSize).as_float() / r->iface->getSamplesToInput();
     data->ratio0 = r->iface->getStretch(t0);
     data->ratio1 = r->iface->getStretch(t1);
   } else {
     data->ratio0 = r->ratio;
     data->ratio1 = r->ratio;
   }
   r->processed += blockSize;
   r->offset += blockSize;
   return blockSize;
}

long postResampleCB(void *cb_data, SBSMSFrame *data)
{