Mercurial > hg > sonic-annotator
view runner/MultiplexedReader.cpp @ 261:af8f6370c7a9 piper-nopiper
Update test fixtures for numerous off-by-one-nanosecond errors fixed recently in RealTime
author | Chris Cannam |
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date | Tue, 22 Nov 2016 11:57:21 +0000 |
parents | 857ce6ecb163 |
children | 68dc2d99a5b1 |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Annotator A utility for batch feature extraction from audio files. Mark Levy, Chris Sutton and Chris Cannam, Queen Mary, University of London. Copyright 2007-2014 QMUL. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #include "MultiplexedReader.h" MultiplexedReader::MultiplexedReader(QList<AudioFileReader *> readers) : m_readers(readers) { m_channelCount = readers.size(); m_sampleRate = readers[0]->getSampleRate(); m_frameCount = 0; m_quicklySeekable = true; foreach (AudioFileReader *r, m_readers) { if (!r->isOK()) { m_channelCount = 0; m_error = r->getError(); } else if (r->getSampleRate() != m_sampleRate) { m_channelCount = 0; m_error = "Readers provided to MultiplexedReader must have the same sample rate"; } else { if (r->getFrameCount() > m_frameCount) { m_frameCount = r->getFrameCount(); } if (!r->isQuicklySeekable()) { m_quicklySeekable = false; } } } } MultiplexedReader::~MultiplexedReader() { foreach (AudioFileReader *r, m_readers) { delete r; } } std::vector<float> MultiplexedReader::getInterleavedFrames(sv_frame_t start, sv_frame_t frameCount) const { int out_chans = m_readers.size(); // Allocate and zero std::vector<float> block(frameCount * out_chans, 0.f); for (int out_chan = 0; out_chan < out_chans; ++out_chan) { AudioFileReader *reader = m_readers[out_chan]; auto readerBlock = reader->getInterleavedFrames(start, frameCount); int in_chans = reader->getChannelCount(); for (int frame = 0; frame < frameCount; ++frame) { int out_index = frame * out_chans + out_chan; for (int in_chan = 0; in_chan < in_chans; ++in_chan) { int in_index = frame * in_chans + in_chan; if (in_index >= (int)readerBlock.size()) break; block[out_index] += readerBlock[in_index]; } if (in_chans > 1) { block[out_index] /= float(in_chans); } } } return block; } int MultiplexedReader::getDecodeCompletion() const { int completion = 100; foreach (AudioFileReader *r, m_readers) { int c = r->getDecodeCompletion(); if (c < 100) { completion = c; } } return completion; } bool MultiplexedReader::isUpdating() const { foreach (AudioFileReader *r, m_readers) { if (r->isUpdating()) return true; } return false; }