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Diffstat (limited to 'src/chresampler.cc')
| -rw-r--r-- | src/chresampler.cc | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/src/chresampler.cc b/src/chresampler.cc deleted file mode 100644 index 94737c6..0000000 --- a/src/chresampler.cc +++ /dev/null @@ -1,220 +0,0 @@ -/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/*************************************************************************** - * chresampler.cc - * - * Tue Sep 23 20:42:14 CEST 2014 - * Copyright 2014 Bent Bisballe Nyeng - * deva@aasimon.org - ****************************************************************************/ - -/* - * This file is part of DrumGizmo. - * - * DrumGizmo is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * DrumGizmo is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with DrumGizmo; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ -#include "chresampler.h" -#include "cpp11fix.h" - -#include <config.h> -#include <hugin.hpp> -#include <stdio.h> - -#ifdef WITH_RESAMPLER - -#if defined(USE_ZITA) -#include <zita-resampler/resampler.h> -#elif defined(USE_SRC) -#include <samplerate.h> -#else -#error "No resampler selected" -#endif - -class CHResampler::Prv -{ -public: -#if defined(USE_ZITA) - Resampler zita; -#elif defined(USE_SRC) - SRC_STATE* state; - SRC_DATA data; -#endif -}; - -CHResampler::CHResampler() - : prv{std::make_unique<Prv>()} -{ -#if defined(SRC) - prv->state = nullptr; -#endif -} - -void CHResampler::setup(double input_fs, double output_fs) -{ - if((input_fs == 0.0) || (output_fs == 0.0)) - { - return; - } - - int nchan = 1; // always mono - - this->input_fs = input_fs; - this->output_fs = output_fs; - -#if defined(USE_ZITA) - DEBUG(resampler, "Using zita-resampler (%d -> %d)", (int)input_fs, - (int)output_fs); - - // delay is 2 * hlen, 72 corresponds to delay introduced by SRC. - int hlen = 72; // 16 ≤ hlen ≤ 96 - - prv->zita.reset(); - prv->zita.setup(input_fs, output_fs, nchan, hlen); - - std::size_t null_size = prv->zita.inpsize() / 2 - 1; - prv->zita.inp_data = nullptr; - prv->zita.inp_count = null_size; - - prv->zita.out_data = nullptr; - prv->zita.out_count = 1024 * 1024; - - prv->zita.process(); -#elif defined(USE_SRC) - DEBUG(resampler, "Using libsamplerate (%d -> %d)", (int)input_fs, - (int)output_fs); - - int err; - prv->state = src_new(SRC_SINC_BEST_QUALITY, nchan, &err); - (void)err; - // printf("err: %d\n", err); - src_set_ratio(prv->state, output_fs / input_fs); - prv->data.src_ratio = output_fs / input_fs; - prv->data.end_of_input = 0; -#endif -} - -CHResampler::~CHResampler() -{ -#if defined(USE_ZITA) -#elif defined(USE_SRC) - if(prv->state) - { - src_delete(prv->state); - } -#endif -} - -void CHResampler::setInputSamples(float* samples, std::size_t count) -{ -#if defined(USE_ZITA) - prv->zita.inp_data = samples; - prv->zita.inp_count = count; -#elif defined(USE_SRC) - prv->data.data_in = samples; - prv->data.input_frames = count; -#endif -} - -void CHResampler::setOutputSamples(float* samples, std::size_t count) -{ -#if defined(USE_ZITA) - prv->zita.out_data = samples; - prv->zita.out_count = count; -#elif defined(USE_SRC) - prv->data.data_out = samples; - prv->data.output_frames = count; -#endif -} - -void CHResampler::process() -{ -#if defined(USE_ZITA) - prv->zita.process(); -#elif defined(USE_SRC) - src_process(prv->state, &prv->data); - prv->data.output_frames -= prv->data.output_frames_gen; - prv->data.data_out += prv->data.output_frames_gen; - prv->data.input_frames -= prv->data.input_frames_used; - prv->data.data_in += prv->data.input_frames_used; -#endif -} - -std::size_t CHResampler::getLatency() const -{ - if (input_fs == output_fs) - { - return 0; - } - -#if defined(USE_ZITA) - return 0; -#elif defined(USE_SRC) - return 0; // TODO? -#endif -} - -std::size_t CHResampler::getInputSampleCount() const -{ -#if defined(USE_ZITA) - return prv->zita.inp_count; -#elif defined(USE_SRC) - return prv->data.input_frames; -#endif -} - -std::size_t CHResampler::getOutputSampleCount() const -{ -#if defined(USE_ZITA) - return prv->zita.out_count; -#elif defined(USE_SRC) - return prv->data.output_frames; -#endif -} - -double CHResampler::getRatio() const -{ - return input_fs / output_fs; -} - -#else - -// Dummy implementation -CHResampler::CHResampler() {} -CHResampler::~CHResampler() {} -void CHResampler::setup(double, double) {} -void CHResampler::setInputSamples(float*, std::size_t) {} -void CHResampler::setOutputSamples(float*, std::size_t) {} -void CHResampler::process() {} - -std::size_t CHResampler::getLatency() const -{ - return 0; -} - -std::size_t CHResampler::getInputSampleCount() const -{ - return 0; -} - -std::size_t CHResampler::getOutputSampleCount() const -{ - return 0; -} - -double CHResampler::getRatio() const -{ - return 1; -} - -#endif /*WITH_RESAMPLER*/ |