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Move the oversampling primitives to the oversampling file.

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This commit is contained in:
Paul Ferrand 2019-12-04 00:17:10 +01:00
parent 83c9dc46d0
commit 0efbf96b4a
2 changed files with 43 additions and 40 deletions
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43
src/sfizz/FilePool.cpp
View file

@ -34,43 +34,6 @@
#include <thread>
using namespace std::chrono_literals;
template <class T>
std::unique_ptr<sfz::AudioBuffer<T>> upsample2x(const sfz::AudioBuffer<T>& buffer)
{
// auto tempBuffer = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 2);
auto outputBuffer = std::make_unique<sfz::AudioBuffer<T>>(buffer.getNumChannels(), buffer.getNumFrames() * 2);
for (int channelIdx = 0; channelIdx < buffer.getNumChannels(); channelIdx++) {
sfz::upsample2xStage(buffer.getConstSpan(channelIdx), outputBuffer->getSpan(channelIdx));
}
return outputBuffer;
}
template <class T>
std::unique_ptr<sfz::AudioBuffer<T>> upsample4x(const sfz::AudioBuffer<T>& buffer)
{
auto tempBuffer = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 2);
auto outputBuffer = std::make_unique<sfz::AudioBuffer<T>>(buffer.getNumChannels(), buffer.getNumFrames() * 4);
for (int channelIdx = 0; channelIdx < buffer.getNumChannels(); channelIdx++) {
sfz::upsample2xStage(buffer.getConstSpan(channelIdx), absl::MakeSpan(*tempBuffer));
sfz::upsample4xStage(absl::MakeConstSpan(*tempBuffer), outputBuffer->getSpan(channelIdx));
}
return outputBuffer;
}
template <class T>
std::unique_ptr<sfz::AudioBuffer<T>> upsample8x(const sfz::AudioBuffer<T>& buffer)
{
auto tempBuffer2x = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 2);
auto tempBuffer4x = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 4);
auto outputBuffer = std::make_unique<sfz::AudioBuffer<T>>(buffer.getNumChannels(), buffer.getNumFrames() * 8);
for (int channelIdx = 0; channelIdx < buffer.getNumChannels(); channelIdx++) {
sfz::upsample2xStage(buffer.getConstSpan(channelIdx), absl::MakeSpan(*tempBuffer2x));
sfz::upsample4xStage(absl::MakeConstSpan(*tempBuffer2x), absl::MakeSpan(*tempBuffer4x));
sfz::upsample8xStage(absl::MakeConstSpan(*tempBuffer4x), outputBuffer->getSpan(channelIdx));
}
return outputBuffer;
}
template <class T>
std::unique_ptr<sfz::AudioBuffer<T>> readFromFile(SndfileHandle& sndFile, uint32_t numFrames, sfz::Oversampling factor)
{
@ -88,11 +51,11 @@ std::unique_ptr<sfz::AudioBuffer<T>> readFromFile(SndfileHandle& sndFile, uint32
case sfz::Oversampling::x1:
return baseBuffer;
case sfz::Oversampling::x2:
return upsample2x(*baseBuffer);
return sfz::upsample2x(*baseBuffer);
case sfz::Oversampling::x4:
return upsample4x(*baseBuffer);
return sfz::upsample4x(*baseBuffer);
case sfz::Oversampling::x8:
return upsample8x(*baseBuffer);
return sfz::upsample8x(*baseBuffer);
default:
return {};
}

40
src/sfizz/Oversampler.h
View file

@ -23,8 +23,10 @@
#pragma once
#include <array>
#include <memory>
#include "absl/types/span.h"
#include "Debug.h"
#include "AudioBuffer.h"
#include "Config.h"
#include "hiir/Upsampler2xFpu.h"
@ -92,4 +94,42 @@ template<>
inline void upsample4xStage<true>(absl::Span<const float> input, absl::Span<float> output);
template<>
inline void upsample8xStage<true>(absl::Span<const float> input, absl::Span<float> output);
template <class T, bool SIMD=SIMDConfig::upsampling>
std::unique_ptr<sfz::AudioBuffer<T>> upsample2x(const sfz::AudioBuffer<T>& buffer)
{
// auto tempBuffer = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 2);
auto outputBuffer = std::make_unique<sfz::AudioBuffer<T>>(buffer.getNumChannels(), buffer.getNumFrames() * 2);
for (int channelIdx = 0; channelIdx < buffer.getNumChannels(); channelIdx++) {
sfz::upsample2xStage<SIMD>(buffer.getConstSpan(channelIdx), outputBuffer->getSpan(channelIdx));
}
return outputBuffer;
}
template <class T, bool SIMD=SIMDConfig::upsampling>
std::unique_ptr<sfz::AudioBuffer<T>> upsample4x(const sfz::AudioBuffer<T>& buffer)
{
auto tempBuffer = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 2);
auto outputBuffer = std::make_unique<sfz::AudioBuffer<T>>(buffer.getNumChannels(), buffer.getNumFrames() * 4);
for (int channelIdx = 0; channelIdx < buffer.getNumChannels(); channelIdx++) {
sfz::upsample2xStage<SIMD>(buffer.getConstSpan(channelIdx), absl::MakeSpan(*tempBuffer));
sfz::upsample4xStage<SIMD>(absl::MakeConstSpan(*tempBuffer), outputBuffer->getSpan(channelIdx));
}
return outputBuffer;
}
template <class T, bool SIMD=SIMDConfig::upsampling>
std::unique_ptr<sfz::AudioBuffer<T>> upsample8x(const sfz::AudioBuffer<T>& buffer)
{
auto tempBuffer2x = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 2);
auto tempBuffer4x = std::make_unique<sfz::Buffer<T>>(buffer.getNumFrames() * 4);
auto outputBuffer = std::make_unique<sfz::AudioBuffer<T>>(buffer.getNumChannels(), buffer.getNumFrames() * 8);
for (int channelIdx = 0; channelIdx < buffer.getNumChannels(); channelIdx++) {
sfz::upsample2xStage<SIMD>(buffer.getConstSpan(channelIdx), absl::MakeSpan(*tempBuffer2x));
sfz::upsample4xStage<SIMD>(absl::MakeConstSpan(*tempBuffer2x), absl::MakeSpan(*tempBuffer4x));
sfz::upsample8xStage<SIMD>(absl::MakeConstSpan(*tempBuffer4x), outputBuffer->getSpan(channelIdx));
}
return outputBuffer;
}
}