153     return [self = shared_from_this(), trackIndex](const std::shared_ptr<MediaSample>& sample) {  in addTrack()  argument
154         self->addSampleToTrack(trackIndex, sample);  in addTrack()
159                                          const std::shared_ptr<MediaSample>& sample) {  in addSampleToTrack()  argument
160     if (sample == nullptr) return;  in addSampleToTrack()
166         mSampleQueue.push(std::make_pair(trackIndex, sample));  in addSampleToTrack()
263         std::shared_ptr<MediaSample> sample;  in runWriterLoop()  local
291             sample = topEntry.second;  in runWriterLoop()
297         if (sample->info.flags & SAMPLE_FLAG_END_OF_STREAM) {  in runWriterLoop()
309                 sample->info.presentationTimeUs = track.mDurationUs + track.mFirstSampleTimeUs;  in runWriterLoop()
313         track.mPrevSampleTimeUs = sample->info.presentationTimeUs;  in runWriterLoop()
317             track.mFirstSampleTimeUs = sample->info.presentationTimeUs;  in runWriterLoop()
321         bufferInfo.offset = sample->dataOffset;  in runWriterLoop()
322         bufferInfo.size = sample->info.size;  in runWriterLoop()
323         bufferInfo.flags = sample->info.flags;  in runWriterLoop()
324         bufferInfo.presentationTimeUs = sample->info.presentationTimeUs;  in runWriterLoop()
326         media_status_t status = mMuxer->writeSampleData(trackIndex, sample->buffer, &bufferInfo);  in runWriterLoop()
331         sample.reset();  in runWriterLoop()