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Diffstat (limited to 'libs/rubberband/src/Resampler.cpp')
| -rw-r--r-- | libs/rubberband/src/Resampler.cpp | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/libs/rubberband/src/Resampler.cpp b/libs/rubberband/src/Resampler.cpp deleted file mode 100644 index 1e479363b5..0000000000 --- a/libs/rubberband/src/Resampler.cpp +++ /dev/null @@ -1,261 +0,0 @@ -/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ - -/* - Rubber Band - An audio time-stretching and pitch-shifting library. - Copyright 2007-2008 Chris Cannam. - - 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 "Resampler.h" - -#include "Profiler.h" - -#include <cstdlib> -#include <cmath> - -#include <iostream> - - -#include <samplerate.h> - - - -namespace RubberBand { - -class ResamplerImpl -{ -public: - virtual ~ResamplerImpl() { } - - virtual int resample(const float *const R__ *const R__ in, - float *const R__ *const R__ out, - int incount, - float ratio, - bool final) = 0; - - virtual void reset() = 0; -}; - -namespace Resamplers { - - - -class D_SRC : public ResamplerImpl -{ -public: - D_SRC(Resampler::Quality quality, int channels, int maxBufferSize, - int m_debugLevel); - ~D_SRC(); - - int resample(const float *const R__ *const R__ in, - float *const R__ *const R__ out, - int incount, - float ratio, - bool final); - - void reset(); - -protected: - SRC_STATE *m_src; - float *m_iin; - float *m_iout; - float m_lastRatio; - int m_channels; - int m_iinsize; - int m_ioutsize; - int m_debugLevel; -}; - -D_SRC::D_SRC(Resampler::Quality quality, int channels, int maxBufferSize, - int debugLevel) : - m_src(0), - m_iin(0), - m_iout(0), - m_lastRatio(1.f), - m_channels(channels), - m_iinsize(0), - m_ioutsize(0), - m_debugLevel(debugLevel) -{ - if (m_debugLevel > 0) { - std::cerr << "Resampler::Resampler: using libsamplerate implementation" - << std::endl; - } - - int err = 0; - m_src = src_new(quality == Resampler::Best ? SRC_SINC_BEST_QUALITY : - quality == Resampler::Fastest ? SRC_LINEAR : - SRC_SINC_FASTEST, - channels, &err); - - if (err) { - std::cerr << "Resampler::Resampler: failed to create libsamplerate resampler: " - << src_strerror(err) << std::endl; - throw Resampler::ImplementationError; //!!! of course, need to catch this! - } - - if (maxBufferSize > 0 && m_channels > 1) { - m_iinsize = maxBufferSize * m_channels; - m_ioutsize = maxBufferSize * m_channels * 2; - m_iin = allocFloat(m_iinsize); - m_iout = allocFloat(m_ioutsize); - } - - reset(); -} - -D_SRC::~D_SRC() -{ - src_delete(m_src); - if (m_iinsize > 0) { - free(m_iin); - } - if (m_ioutsize > 0) { - free(m_iout); - } -} - -int -D_SRC::resample(const float *const R__ *const R__ in, - float *const R__ *const R__ out, - int incount, - float ratio, - bool final) -{ - SRC_DATA data; - - int outcount = lrintf(ceilf(incount * ratio)); - - if (m_channels == 1) { - data.data_in = const_cast<float *>(*in); //!!!??? - data.data_out = *out; - } else { - if (incount * m_channels > m_iinsize) { - m_iinsize = incount * m_channels; - m_iin = allocFloat(m_iin, m_iinsize); - } - if (outcount * m_channels > m_ioutsize) { - m_ioutsize = outcount * m_channels; - m_iout = allocFloat(m_iout, m_ioutsize); - } - for (int i = 0; i < incount; ++i) { - for (int c = 0; c < m_channels; ++c) { - m_iin[i * m_channels + c] = in[c][i]; - } - } - data.data_in = m_iin; - data.data_out = m_iout; - } - - data.input_frames = incount; - data.output_frames = outcount; - data.src_ratio = ratio; - data.end_of_input = (final ? 1 : 0); - - int err = 0; - err = src_process(m_src, &data); - - if (err) { - std::cerr << "Resampler::process: libsamplerate error: " - << src_strerror(err) << std::endl; - throw Resampler::ImplementationError; //!!! of course, need to catch this! - } - - if (m_channels > 1) { - for (int i = 0; i < data.output_frames_gen; ++i) { - for (int c = 0; c < m_channels; ++c) { - out[c][i] = m_iout[i * m_channels + c]; - } - } - } - - m_lastRatio = ratio; - - return data.output_frames_gen; -} - -void -D_SRC::reset() -{ - src_reset(m_src); -} - - - -} /* end namespace Resamplers */ - -Resampler::Resampler(Resampler::Quality quality, int channels, - int maxBufferSize, int debugLevel) -{ - m_method = -1; - - switch (quality) { - - case Resampler::Best: - m_method = 1; - break; - - case Resampler::FastestTolerable: - m_method = 1; - break; - - case Resampler::Fastest: - m_method = 1; - break; - } - - if (m_method == -1) { - std::cerr << "Resampler::Resampler(" << quality << ", " << channels - << ", " << maxBufferSize << "): No implementation available!" - << std::endl; - abort(); - } - - switch (m_method) { - case 0: - std::cerr << "Resampler::Resampler(" << quality << ", " << channels - << ", " << maxBufferSize << "): No implementation available!" - << std::endl; - abort(); - break; - - case 1: - d = new Resamplers::D_SRC(quality, channels, maxBufferSize, debugLevel); - break; - - case 2: - std::cerr << "Resampler::Resampler(" << quality << ", " << channels - << ", " << maxBufferSize << "): No implementation available!" - << std::endl; - abort(); - break; - } -} - -Resampler::~Resampler() -{ - delete d; -} - -int -Resampler::resample(const float *const R__ *const R__ in, - float *const R__ *const R__ out, - int incount, float ratio, bool final) -{ - Profiler profiler("Resampler::resample"); - return d->resample(in, out, incount, ratio, final); -} - -void -Resampler::reset() -{ - d->reset(); -} - -} |