50 lines
1.0 KiB
C++
50 lines
1.0 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "MixRampAnalyzer.hxx"
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#include <cassert>
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inline void
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MixRampData::Add(MixRampItem item) noexcept
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{
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for (std::size_t i = 0; i < mixramp_volumes.size(); ++i) {
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if (start[i].time < FloatDuration{} &&
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item.volume >= mixramp_volumes[i])
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start[i] = item;
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if (item.volume >= mixramp_volumes[i])
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end[i] = item;
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}
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}
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void
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MixRampAnalyzer::Process(std::span<const ReplayGainAnalyzer::Frame> src) noexcept
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{
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while (!src.empty()) {
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std::size_t chunk_remaining = chunk_frames - chunk_fill;
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assert(chunk_remaining > 0);
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if (chunk_remaining > src.size()) {
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gain_analyzer.Process(src);
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chunk_fill += src.size();
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return;
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}
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gain_analyzer.Process({src.data(), chunk_remaining});
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src = src.subspan(chunk_remaining);
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gain_analyzer.Flush();
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const double gain = (double)gain_analyzer.GetGain();
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const double volume = -gain;
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result.Add({GetTime(), volume});
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++chunk_number;
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chunk_fill = 0;
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gain_analyzer = {};
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}
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}
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