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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
Audacity: A Digital Audio Editor
FloatVectorClip.cpp
Matthieu Hodgkinson
**********************************************************************/
#include "FloatVectorClip.h"
#include <cmath>
FloatVectorClip::FloatVectorClip(
int sampleRate, const std::vector<std::vector<float>>& audio)
: mSampleRate { sampleRate }
, mAudio { audio }
{
}
namespace
{
std::vector<std::vector<float>>
Duplicate(const std::vector<float>& audio, size_t numChannels)
{
std::vector<std::vector<float>> duplicate;
for (auto i = 0u; i < numChannels; ++i)
duplicate.push_back(audio);
return duplicate;
}
} // namespace
FloatVectorClip::FloatVectorClip(
int sampleRate, const std::vector<float>& audio, size_t numChannels)
: FloatVectorClip(sampleRate, Duplicate(audio, numChannels))
{
}
AudioSegmentSampleView FloatVectorClip::GetSampleView(
size_t iChannel, sampleCount start, size_t len, bool mayThrow) const
{
std::vector<BlockSampleView> blockViews {
std::make_shared<std::vector<float>>(mAudio[iChannel])
};
// todo(mhodgkinson) review argument types.
return AudioSegmentSampleView(
std::move(blockViews), start.as_size_t(), len);
}
sampleCount FloatVectorClip::GetVisibleSampleCount() const
{
return mAudio[0].size();
}
size_t FloatVectorClip::NChannels() const
{
return mAudio.size();
}
int FloatVectorClip::GetRate() const
{
return mSampleRate;
}
sampleCount FloatVectorClip::TimeToSamples(double time) const
{
return sampleCount(floor(time * GetRate() + 0.5));
}
double FloatVectorClip::GetPlayDuration() const
{
return stretchRatio * mAudio[0].size() / mSampleRate;
}
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