Mercurial > hg > vamp-plugin-sdk
view src/vamp-hostsdk/PluginInputDomainAdapter.cpp @ 330:dba435f9b283
PLUGIN is not defined aat the point where it was needed for LDFLAGS -- replace with an explicit $(PLUGIN_LIBRARY_NAME)$(PLUGIN_EXT)
author | Chris Cannam |
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date | Fri, 02 Dec 2011 11:31:00 +0000 |
parents | 7920b9519fd9 |
children | 50df48a51c97 |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Vamp An API for audio analysis and feature extraction plugins. Centre for Digital Music, Queen Mary, University of London. Copyright 2006-2009 Chris Cannam and QMUL. This file is based in part on Don Cross's public domain FFT implementation. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the names of the Centre for Digital Music; Queen Mary, University of London; and Chris Cannam shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization. */ #include <vamp-hostsdk/PluginInputDomainAdapter.h> #include <cmath> #include "Window.h" /** * If you want to compile using FFTW instead of the built-in FFT * implementation for the PluginInputDomainAdapter, define HAVE_FFTW3 * in the Makefile. * * Be aware that FFTW is licensed under the GPL -- unlike this SDK, * which is provided under a more liberal BSD license in order to * permit use in closed source applications. The use of FFTW would * mean that your code would need to be licensed under the GPL as * well. Do not define this symbol unless you understand and accept * the implications of this. * * Parties such as Linux distribution packagers who redistribute this * SDK for use in other programs should _not_ define this symbol, as * it would change the effective licensing terms under which the SDK * was available to third party developers. * * The default is not to use FFTW, and to use the built-in FFT instead. * * Note: The FFTW code uses FFTW_MEASURE, and so will perform badly on * its first invocation unless the host has saved and restored FFTW * wisdom (see the FFTW documentation). */ #ifdef HAVE_FFTW3 #include <fftw3.h> #endif _VAMP_SDK_HOSTSPACE_BEGIN(PluginInputDomainAdapter.cpp) namespace Vamp { namespace HostExt { class PluginInputDomainAdapter::Impl { public: Impl(Plugin *plugin, float inputSampleRate); ~Impl(); bool initialise(size_t channels, size_t stepSize, size_t blockSize); void reset(); size_t getPreferredStepSize() const; size_t getPreferredBlockSize() const; FeatureSet process(const float *const *inputBuffers, RealTime timestamp); void setProcessTimestampMethod(ProcessTimestampMethod m); ProcessTimestampMethod getProcessTimestampMethod() const; RealTime getTimestampAdjustment() const; WindowType getWindowType() const; void setWindowType(WindowType type); protected: Plugin *m_plugin; float m_inputSampleRate; int m_channels; int m_stepSize; int m_blockSize; float **m_freqbuf; double *m_ri; WindowType m_windowType; Window<double> *m_window; ProcessTimestampMethod m_method; int m_processCount; float **m_shiftBuffers; #ifdef HAVE_FFTW3 fftw_plan m_plan; fftw_complex *m_cbuf; #else double *m_ro; double *m_io; void fft(unsigned int n, bool inverse, double *ri, double *ii, double *ro, double *io); #endif FeatureSet processShiftingTimestamp(const float *const *inputBuffers, RealTime timestamp); FeatureSet processShiftingData(const float *const *inputBuffers, RealTime timestamp); size_t makeBlockSizeAcceptable(size_t) const; Window<double>::WindowType convertType(WindowType t) const; }; PluginInputDomainAdapter::PluginInputDomainAdapter(Plugin *plugin) : PluginWrapper(plugin) { m_impl = new Impl(plugin, m_inputSampleRate); } PluginInputDomainAdapter::~PluginInputDomainAdapter() { delete m_impl; } bool PluginInputDomainAdapter::initialise(size_t channels, size_t stepSize, size_t blockSize) { return m_impl->initialise(channels, stepSize, blockSize); } void PluginInputDomainAdapter::reset() { m_impl->reset(); } Plugin::InputDomain PluginInputDomainAdapter::getInputDomain() const { return TimeDomain; } size_t PluginInputDomainAdapter::getPreferredStepSize() const { return m_impl->getPreferredStepSize(); } size_t PluginInputDomainAdapter::getPreferredBlockSize() const { return m_impl->getPreferredBlockSize(); } Plugin::FeatureSet PluginInputDomainAdapter::process(const float *const *inputBuffers, RealTime timestamp) { return m_impl->process(inputBuffers, timestamp); } void PluginInputDomainAdapter::setProcessTimestampMethod(ProcessTimestampMethod m) { m_impl->setProcessTimestampMethod(m); } PluginInputDomainAdapter::ProcessTimestampMethod PluginInputDomainAdapter::getProcessTimestampMethod() const { return m_impl->getProcessTimestampMethod(); } RealTime PluginInputDomainAdapter::getTimestampAdjustment() const { return m_impl->getTimestampAdjustment(); } PluginInputDomainAdapter::WindowType PluginInputDomainAdapter::getWindowType() const { return m_impl->getWindowType(); } void PluginInputDomainAdapter::setWindowType(WindowType w) { m_impl->setWindowType(w); } PluginInputDomainAdapter::Impl::Impl(Plugin *plugin, float inputSampleRate) : m_plugin(plugin), m_inputSampleRate(inputSampleRate), m_channels(0), m_stepSize(0), m_blockSize(0), m_freqbuf(0), m_ri(0), m_windowType(HanningWindow), m_window(0), m_method(ShiftTimestamp), m_processCount(0), m_shiftBuffers(0), #ifdef HAVE_FFTW3 m_plan(0), m_cbuf(0) #else m_ro(0), m_io(0) #endif { } PluginInputDomainAdapter::Impl::~Impl() { // the adapter will delete the plugin if (m_shiftBuffers) { for (int c = 0; c < m_channels; ++c) { delete[] m_shiftBuffers[c]; } delete[] m_shiftBuffers; } if (m_channels > 0) { for (int c = 0; c < m_channels; ++c) { delete[] m_freqbuf[c]; } delete[] m_freqbuf; #ifdef HAVE_FFTW3 if (m_plan) { fftw_destroy_plan(m_plan); fftw_free(m_ri); fftw_free(m_cbuf); m_plan = 0; } #else delete[] m_ri; delete[] m_ro; delete[] m_io; #endif delete m_window; } } // for some visual studii apparently #ifndef M_PI #define M_PI 3.14159265358979232846 #endif bool PluginInputDomainAdapter::Impl::initialise(size_t channels, size_t stepSize, size_t blockSize) { if (m_plugin->getInputDomain() == TimeDomain) { m_stepSize = int(stepSize); m_blockSize = int(blockSize); m_channels = int(channels); return m_plugin->initialise(channels, stepSize, blockSize); } if (blockSize < 2) { std::cerr << "ERROR: PluginInputDomainAdapter::initialise: blocksize < 2 not supported" << std::endl; return false; } if (blockSize & (blockSize-1)) { std::cerr << "ERROR: PluginInputDomainAdapter::initialise: non-power-of-two\nblocksize " << blockSize << " not supported" << std::endl; return false; } if (m_channels > 0) { for (int c = 0; c < m_channels; ++c) { delete[] m_freqbuf[c]; } delete[] m_freqbuf; #ifdef HAVE_FFTW3 if (m_plan) { fftw_destroy_plan(m_plan); fftw_free(m_ri); fftw_free(m_cbuf); m_plan = 0; } #else delete[] m_ri; delete[] m_ro; delete[] m_io; #endif delete m_window; } m_stepSize = int(stepSize); m_blockSize = int(blockSize); m_channels = int(channels); m_freqbuf = new float *[m_channels]; for (int c = 0; c < m_channels; ++c) { m_freqbuf[c] = new float[m_blockSize + 2]; } m_window = new Window<double>(convertType(m_windowType), m_blockSize); #ifdef HAVE_FFTW3 m_ri = (double *)fftw_malloc(blockSize * sizeof(double)); m_cbuf = (fftw_complex *)fftw_malloc((blockSize/2 + 1) * sizeof(fftw_complex)); m_plan = fftw_plan_dft_r2c_1d(blockSize, m_ri, m_cbuf, FFTW_MEASURE); #else m_ri = new double[m_blockSize]; m_ro = new double[m_blockSize]; m_io = new double[m_blockSize]; #endif m_processCount = 0; return m_plugin->initialise(channels, stepSize, blockSize); } void PluginInputDomainAdapter::Impl::reset() { m_processCount = 0; m_plugin->reset(); } size_t PluginInputDomainAdapter::Impl::getPreferredStepSize() const { size_t step = m_plugin->getPreferredStepSize(); if (step == 0 && (m_plugin->getInputDomain() == FrequencyDomain)) { step = getPreferredBlockSize() / 2; } return step; } size_t PluginInputDomainAdapter::Impl::getPreferredBlockSize() const { size_t block = m_plugin->getPreferredBlockSize(); if (m_plugin->getInputDomain() == FrequencyDomain) { if (block == 0) { block = 1024; } else { block = makeBlockSizeAcceptable(block); } } return block; } size_t PluginInputDomainAdapter::Impl::makeBlockSizeAcceptable(size_t blockSize) const { if (blockSize < 2) { std::cerr << "WARNING: PluginInputDomainAdapter::initialise: blocksize < 2 not" << std::endl << "supported, increasing from " << blockSize << " to 2" << std::endl; blockSize = 2; } else if (blockSize & (blockSize-1)) { #ifdef HAVE_FFTW3 // not an issue with FFTW #else // not a power of two, can't handle that with our built-in FFT // implementation size_t nearest = blockSize; size_t power = 0; while (nearest > 1) { nearest >>= 1; ++power; } nearest = 1; while (power) { nearest <<= 1; --power; } if (blockSize - nearest > (nearest*2) - blockSize) { nearest = nearest*2; } std::cerr << "WARNING: PluginInputDomainAdapter::initialise: non-power-of-two\nblocksize " << blockSize << " not supported, using blocksize " << nearest << " instead" << std::endl; blockSize = nearest; #endif } return blockSize; } RealTime PluginInputDomainAdapter::Impl::getTimestampAdjustment() const { if (m_plugin->getInputDomain() == TimeDomain) { return RealTime::zeroTime; } else if (m_method == ShiftData || m_method == NoShift) { return RealTime::zeroTime; } else { return RealTime::frame2RealTime (m_blockSize/2, int(m_inputSampleRate + 0.5)); } } void PluginInputDomainAdapter::Impl::setProcessTimestampMethod(ProcessTimestampMethod m) { m_method = m; } PluginInputDomainAdapter::ProcessTimestampMethod PluginInputDomainAdapter::Impl::getProcessTimestampMethod() const { return m_method; } void PluginInputDomainAdapter::Impl::setWindowType(WindowType t) { if (m_windowType == t) return; m_windowType = t; if (m_window) { delete m_window; m_window = new Window<double>(convertType(m_windowType), m_blockSize); } } PluginInputDomainAdapter::WindowType PluginInputDomainAdapter::Impl::getWindowType() const { return m_windowType; } Window<double>::WindowType PluginInputDomainAdapter::Impl::convertType(WindowType t) const { switch (t) { case RectangularWindow: return Window<double>::RectangularWindow; case BartlettWindow: return Window<double>::BartlettWindow; case HammingWindow: return Window<double>::HammingWindow; case HanningWindow: return Window<double>::HanningWindow; case BlackmanWindow: return Window<double>::BlackmanWindow; case NuttallWindow: return Window<double>::NuttallWindow; case BlackmanHarrisWindow: return Window<double>::BlackmanHarrisWindow; default: return Window<double>::HanningWindow; } } Plugin::FeatureSet PluginInputDomainAdapter::Impl::process(const float *const *inputBuffers, RealTime timestamp) { if (m_plugin->getInputDomain() == TimeDomain) { return m_plugin->process(inputBuffers, timestamp); } if (m_method == ShiftTimestamp || m_method == NoShift) { return processShiftingTimestamp(inputBuffers, timestamp); } else { return processShiftingData(inputBuffers, timestamp); } } Plugin::FeatureSet PluginInputDomainAdapter::Impl::processShiftingTimestamp(const float *const *inputBuffers, RealTime timestamp) { if (m_method == ShiftTimestamp) { timestamp = timestamp + getTimestampAdjustment(); } for (int c = 0; c < m_channels; ++c) { m_window->cut(inputBuffers[c], m_ri); for (int i = 0; i < m_blockSize/2; ++i) { // FFT shift double value = m_ri[i]; m_ri[i] = m_ri[i + m_blockSize/2]; m_ri[i + m_blockSize/2] = value; } #ifdef HAVE_FFTW3 fftw_execute(m_plan); for (int i = 0; i <= m_blockSize/2; ++i) { m_freqbuf[c][i * 2] = float(m_cbuf[i][0]); m_freqbuf[c][i * 2 + 1] = float(m_cbuf[i][1]); } #else fft(m_blockSize, false, m_ri, 0, m_ro, m_io); for (int i = 0; i <= m_blockSize/2; ++i) { m_freqbuf[c][i * 2] = float(m_ro[i]); m_freqbuf[c][i * 2 + 1] = float(m_io[i]); } #endif } return m_plugin->process(m_freqbuf, timestamp); } Plugin::FeatureSet PluginInputDomainAdapter::Impl::processShiftingData(const float *const *inputBuffers, RealTime timestamp) { if (m_processCount == 0) { if (!m_shiftBuffers) { m_shiftBuffers = new float *[m_channels]; for (int c = 0; c < m_channels; ++c) { m_shiftBuffers[c] = new float[m_blockSize + m_blockSize/2]; } } for (int c = 0; c < m_channels; ++c) { for (int i = 0; i < m_blockSize + m_blockSize/2; ++i) { m_shiftBuffers[c][i] = 0.f; } } } for (int c = 0; c < m_channels; ++c) { for (int i = m_stepSize; i < m_blockSize + m_blockSize/2; ++i) { m_shiftBuffers[c][i - m_stepSize] = m_shiftBuffers[c][i]; } for (int i = 0; i < m_blockSize; ++i) { m_shiftBuffers[c][i + m_blockSize/2] = inputBuffers[c][i]; } } for (int c = 0; c < m_channels; ++c) { m_window->cut(m_shiftBuffers[c], m_ri); for (int i = 0; i < m_blockSize/2; ++i) { // FFT shift double value = m_ri[i]; m_ri[i] = m_ri[i + m_blockSize/2]; m_ri[i + m_blockSize/2] = value; } #ifdef HAVE_FFTW3 fftw_execute(m_plan); for (int i = 0; i <= m_blockSize/2; ++i) { m_freqbuf[c][i * 2] = float(m_cbuf[i][0]); m_freqbuf[c][i * 2 + 1] = float(m_cbuf[i][1]); } #else fft(m_blockSize, false, m_ri, 0, m_ro, m_io); for (int i = 0; i <= m_blockSize/2; ++i) { m_freqbuf[c][i * 2] = float(m_ro[i]); m_freqbuf[c][i * 2 + 1] = float(m_io[i]); } #endif } ++m_processCount; return m_plugin->process(m_freqbuf, timestamp); } #ifndef HAVE_FFTW3 void PluginInputDomainAdapter::Impl::fft(unsigned int n, bool inverse, double *ri, double *ii, double *ro, double *io) { if (!ri || !ro || !io) return; unsigned int bits; unsigned int i, j, k, m; unsigned int blockSize, blockEnd; double tr, ti; if (n < 2) return; if (n & (n-1)) return; double angle = 2.0 * M_PI; if (inverse) angle = -angle; for (i = 0; ; ++i) { if (n & (1 << i)) { bits = i; break; } } static unsigned int tableSize = 0; static int *table = 0; if (tableSize != n) { delete[] table; table = new int[n]; for (i = 0; i < n; ++i) { m = i; for (j = k = 0; j < bits; ++j) { k = (k << 1) | (m & 1); m >>= 1; } table[i] = k; } tableSize = n; } if (ii) { for (i = 0; i < n; ++i) { ro[table[i]] = ri[i]; io[table[i]] = ii[i]; } } else { for (i = 0; i < n; ++i) { ro[table[i]] = ri[i]; io[table[i]] = 0.0; } } blockEnd = 1; for (blockSize = 2; blockSize <= n; blockSize <<= 1) { double delta = angle / (double)blockSize; double sm2 = -sin(-2 * delta); double sm1 = -sin(-delta); double cm2 = cos(-2 * delta); double cm1 = cos(-delta); double w = 2 * cm1; double ar[3], ai[3]; for (i = 0; i < n; i += blockSize) { ar[2] = cm2; ar[1] = cm1; ai[2] = sm2; ai[1] = sm1; for (j = i, m = 0; m < blockEnd; j++, m++) { ar[0] = w * ar[1] - ar[2]; ar[2] = ar[1]; ar[1] = ar[0]; ai[0] = w * ai[1] - ai[2]; ai[2] = ai[1]; ai[1] = ai[0]; k = j + blockEnd; tr = ar[0] * ro[k] - ai[0] * io[k]; ti = ar[0] * io[k] + ai[0] * ro[k]; ro[k] = ro[j] - tr; io[k] = io[j] - ti; ro[j] += tr; io[j] += ti; } } blockEnd = blockSize; } if (inverse) { double denom = (double)n; for (i = 0; i < n; i++) { ro[i] /= denom; io[i] /= denom; } } } #endif } } _VAMP_SDK_HOSTSPACE_END(PluginInputDomainAdapter.cpp)