986267300b
Deleting the old internal audaspace. Major changes from there are: - The whole library was refactored to use C++11. - Many stability and performance improvements. - Major Python API refactor: - Most requested: Play self generated sounds using numpy arrays. - For games: Sound list, random sounds and dynamic music. - Writing sounds to files. - Sequencing API. - Opening sound devices, eg. Jack. - Ability to choose different OpenAL devices in the user settings.
98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
/*******************************************************************************
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* Copyright 2015-2016 Juan Francisco Crespo Galán
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#include "fx/ImpulseResponse.h"
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#include <algorithm>
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#include <cstring>
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#include <cstdlib>
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#include <cmath>
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AUD_NAMESPACE_BEGIN
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ImpulseResponse::ImpulseResponse(std::shared_ptr<StreamBuffer> impulseResponse) :
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ImpulseResponse(impulseResponse, std::make_shared<FFTPlan>(0.0))
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{
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}
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ImpulseResponse::ImpulseResponse(std::shared_ptr<StreamBuffer> impulseResponse, std::shared_ptr<FFTPlan> plan)
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{
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auto reader = impulseResponse->createReader();
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m_length = reader->getLength();
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processImpulseResponse(impulseResponse->createReader(), plan);
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}
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Specs ImpulseResponse::getSpecs()
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{
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return m_specs;
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}
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int ImpulseResponse::getLength()
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{
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return m_length;
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}
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std::shared_ptr<std::vector<std::shared_ptr<std::vector<std::complex<sample_t>>>>> ImpulseResponse::getChannel(int n)
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{
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return m_processedIR[n];
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}
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void ImpulseResponse::processImpulseResponse(std::shared_ptr<IReader> reader, std::shared_ptr<FFTPlan> plan)
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{
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m_specs.channels = reader->getSpecs().channels;
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m_specs.rate = reader->getSpecs().rate;
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int N = plan->getSize();
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bool eos = false;
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int length = reader->getLength();
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sample_t* buffer = (sample_t*)std::malloc(length * m_specs.channels * sizeof(sample_t));
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int numParts = std::ceil((float)length / (plan->getSize() / 2));
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for(int i = 0; i < m_specs.channels; i++)
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{
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m_processedIR.push_back(std::make_shared<std::vector<std::shared_ptr<std::vector<std::complex<sample_t>>>>>());
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for(int j = 0; j < numParts; j++)
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(*m_processedIR[i]).push_back(std::make_shared<std::vector<std::complex<sample_t>>>((N / 2) + 1));
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}
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length += reader->getSpecs().rate;
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reader->read(length, eos, buffer);
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void* bufferFFT = plan->getBuffer();
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for(int i = 0; i < m_specs.channels; i++)
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{
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int partStart = 0;
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for(int h = 0; h < numParts; h++)
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{
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int k = 0;
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int len = std::min(partStart + ((N / 2)*m_specs.channels), length*m_specs.channels);
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std::memset(bufferFFT, 0, ((N / 2) + 1) * 2 * sizeof(fftwf_complex));
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for(int j = partStart; j < len; j += m_specs.channels)
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{
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((float*)bufferFFT)[k] = buffer[j + i];
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k++;
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}
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plan->FFT(bufferFFT);
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for(int j = 0; j < (N / 2) + 1; j++)
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{
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(*(*m_processedIR[i])[h])[j] = reinterpret_cast<std::complex<sample_t>*>(bufferFFT)[j];
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}
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partStart += N / 2 * m_specs.channels;
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}
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}
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plan->freeBuffer(bufferFFT);
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std::free(buffer);
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}
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AUD_NAMESPACE_END
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