Rename analyzers and add turbine analyzer

src/analyzer/waverubberanalyzer.cpp

@@ -0,0 +1,92 @@
+/*
+   Strawberry Music Player
+   Copyright 2024, Gustavo L Conte <suporte@gu.pro.br>
+
+   Strawberry is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Strawberry is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QPainter>
+#include <QResizeEvent>
+#include "engine/enginebase.h"
+#include "waverubberanalyzer.h"
+
+const char *WaveRubberAnalyzer::kName = QT_TRANSLATE_NOOP("AnalyzerContainer", "WaveRubber");
+
+WaveRubberAnalyzer::WaveRubberAnalyzer(QWidget *parent)
+    : AnalyzerBase(parent, 9) {}
+
+void WaveRubberAnalyzer::resizeEvent(QResizeEvent *e) {
+
+  Q_UNUSED(e)
+
+  canvas_ = QPixmap(size());
+  canvas_.fill(palette().color(QPalette::AlternateBase));
+
+}
+
+void WaveRubberAnalyzer::analyze(QPainter &p, const Scope &s, const bool new_frame) {
+
+  if (!new_frame || engine_->state() == EngineBase::State::Paused) {
+    p.drawPixmap(0, 0, canvas_);
+    return;
+  }
+
+  // Clear the canvas
+  canvas_ = QPixmap(size());
+  canvas_.fill(palette().color(QPalette::Window));
+
+  QPainter canvas_painter(&canvas_);
+
+  // Set the pen color to the QT palette highlight color
+  canvas_painter.setPen(palette().color(QPalette::Highlight));
+  // Get pointer to amplitude data
+  const float *amplitude_data = s.data();
+
+  const int mid_y = height() / 4;
+  const int num_samples = static_cast<int>(s.size());
+
+  const float x_scale = static_cast<float>(width()) / static_cast<float>(num_samples);
+  float prev_y = static_cast<float>(mid_y);
+
+  // Draw the waveform
+  for (int i = 0; i < num_samples; ++i) {
+
+    // Normalize amplitude to 0-1 range
+    const float color_factor = amplitude_data[i] / 2.0F + 0.5F;
+    const int rgb_value = static_cast<int>(255 - color_factor * 255);
+    QColor highlight_color = palette().color(QPalette::Highlight);
+    // Blend blue and green with highlight color from QT palette based on amplitude
+    QColor blended_color = QColor(rgb_value, highlight_color.green(), highlight_color.blue());
+    canvas_painter.setPen(blended_color);
+
+    const int x = static_cast<int>(static_cast<float>(i) * x_scale);
+    const int y = static_cast<int>(static_cast<float>(mid_y) - (s[i] * static_cast<float>(mid_y)));
+
+    canvas_painter.drawLine(x, static_cast<int>(prev_y + static_cast<float>(mid_y)), static_cast<int>(static_cast<float>(x) + x_scale), static_cast<int>(static_cast<float>(y + mid_y)));  // Draw
+    prev_y = static_cast<float>(y);
+  }
+
+  canvas_painter.end();
+  p.drawPixmap(0, 0, canvas_);
+
+}
+
+void WaveRubberAnalyzer::transform(Scope &s) {
+  // No need transformation for waveform analyzer
+  Q_UNUSED(s);
+}
+
+void WaveRubberAnalyzer::demo(QPainter &p) {
+  analyze(p, Scope(fht_->size(), 0), new_frame_);
+}