121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
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/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "waveform.h"
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#include <QPainter>
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#include <QtMath>
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#include <QDebug>
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#include <QVector2D>
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#include <QVector3D>
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#include "common/qtutils.h"
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#include "config/config.h"
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#include "node/node.h"
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namespace olive {
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#define super ScopeBase
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WaveformScope::WaveformScope(QWidget* parent) :
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super(parent)
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{
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}
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ShaderCode WaveformScope::GenerateShaderCode()
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{
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return ShaderCode(FileFunctions::ReadFileAsString(":/shaders/rgbwaveform.frag"),
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FileFunctions::ReadFileAsString(":/shaders/rgbwaveform.vert"));
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}
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void WaveformScope::DrawScope(TexturePtr managed_tex, QVariant pipeline)
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{
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float waveform_scale = 0.80f;
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// Draw waveform through shader
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ShaderJob job;
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// Set viewport size
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job.Insert(QStringLiteral("viewport"),
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NodeValue(NodeValue::kVec2, QVector2D(width(), height())));
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// Set luma coefficients
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double luma_coeffs[3] = {0.0f, 0.0f, 0.0f};
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color_manager()->GetDefaultLumaCoefs(luma_coeffs);
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job.Insert(QStringLiteral("luma_coeffs"),
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NodeValue(NodeValue::kVec3, QVector3D(luma_coeffs[0], luma_coeffs[1], luma_coeffs[2])));
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// Scale of the waveform relative to the viewport surface.
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job.Insert(QStringLiteral("waveform_scale"),
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NodeValue(NodeValue::kFloat, waveform_scale));
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// Insert source texture
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job.Insert(QStringLiteral("ove_maintex"),
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NodeValue(NodeValue::kTexture, QVariant::fromValue(managed_tex)));
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renderer()->Blit(pipeline, job, GetViewportParams());
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float waveform_dim_x = ceil((width() - 1.0) * waveform_scale);
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float waveform_dim_y = ceil((height() - 1.0) * waveform_scale);
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float waveform_start_dim_x =
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((width() - 1.0) - waveform_dim_x) / 2.0f;
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float waveform_start_dim_y =
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((height() - 1.0) - waveform_dim_y) / 2.0f;
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float waveform_end_dim_x = (width() - 1.0) - waveform_start_dim_x;
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// Draw line overlays
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QPainter p(paint_device());
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QFont font;
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font.setPixelSize(10);
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QFontMetrics font_metrics = QFontMetrics(font);
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QString label;
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float ire_increment = 0.1f;
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int ire_steps = qRound(1.0 / ire_increment);
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QVector<QLine> ire_lines(ire_steps + 1);
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int font_x_offset = 0;
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int font_y_offset = font_metrics.capHeight() / 2.0f;
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p.setCompositionMode(QPainter::CompositionMode_Plus);
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p.setPen(QColor(0.0, 0.6 * 255.0, 0.0));
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p.setFont(font);
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for (int i=0; i <= ire_steps; i++) {
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ire_lines[i].setLine(
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waveform_start_dim_x,
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(waveform_dim_y * (i * ire_increment)) + waveform_start_dim_y,
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waveform_end_dim_x,
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(waveform_dim_y * (i * ire_increment)) + waveform_start_dim_y);
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label = QString::number(1.0 - (i * ire_increment), 'f', 1);
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font_x_offset = QtUtils::QFontMetricsWidth(font_metrics, label) + 4;
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p.drawText(
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waveform_start_dim_x - font_x_offset,
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(waveform_dim_y * (i * ire_increment)) + waveform_start_dim_y + font_y_offset,
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label);
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}
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p.drawLines(ire_lines);
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}
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}
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