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新增sample转db函数

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This commit is contained in:
Nanako 2024-06-13 21:15:10 +08:00
parent d325dc51bf
commit f3e3d44ce8
2 changed files with 17 additions and 3 deletions
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9
Arona/src/widget/widgets.cpp
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@ -118,9 +118,12 @@ void draw_mixer_track(uint32_t delta_sample_count, mixer_track* track, int32_t i
});
sample_t peak = std::abs(*peak_it);
float peak_db = sample_to_db(peak);
float peak_db_percent = db_to_percent(peak_db);
// update peak
if (peak > peak_info.peak) {
peak_info.peak = peak;
if (peak_db_percent > peak_info.peak) {
peak_info.peak = peak_db_percent;
peak_info.left_time = volume_bar_peak_duration;
} else {
peak_info.left_time -= delta_time;
@ -130,7 +133,7 @@ void draw_mixer_track(uint32_t delta_sample_count, mixer_track* track, int32_t i
}
}
sample_value.push_back(peak);
sample_value.push_back(peak_db_percent);
sample_peak.push_back(peak_info.peak);
}
draw_volume_bar(volume_bar_id.c_str(), widget_height, sample_value, sample_peak);

11
Arona/src/widget/widgets.h
View File

@ -1,9 +1,20 @@
#pragma once
#include <vector>
#include <cstdint>
#include <cmath>
#include "extern.h"
class mixer_track;
inline sample_t sample_to_db(sample_t sample) {
return 20.0f * log10f(sample);
}
// convert db(-60db, 10db) to percent in range [0, 1]
inline float db_to_percent(float db) {
return (db + 60.0f) / 70.0f;
}
void vertical_text(const char* text);
void draw_instrument_track();