mirror of
https://github.com/f4exb/sdrangel.git
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156 lines
4.1 KiB
C++
156 lines
4.1 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 Vort //
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// Copyright (C) 2018 F4HKW //
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// for F4EXB / SDRAngel //
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// //
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// OpenGL interface modernization. //
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// See: http://doc.qt.io/qt-5/qopenglshaderprogram.html //
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// //
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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 as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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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 V3 for more details. //
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// //
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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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#ifndef INCLUDE_TVSCREENANALOG_H
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#define INCLUDE_TVSCREENANALOG_H
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#include "export.h"
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#include <QMutex>
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#include <QTimer>
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#include <QGLWidget>
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#include <QOpenGLTexture>
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#include <QOpenGLFunctions>
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#include <QOpenGLShaderProgram>
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class TVScreenAnalogBuffer
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{
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public:
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TVScreenAnalogBuffer(int width, int height)
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{
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m_width = width;
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m_height = height;
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m_imageData = new int[width * height];
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m_lineShiftData = new int[height];
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m_outOfBoundsLine = new int[width];
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m_currentLine = m_outOfBoundsLine;
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std::fill(m_imageData, m_imageData + width * height, 0);
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std::fill(m_lineShiftData, m_lineShiftData + height, 127);
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}
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~TVScreenAnalogBuffer()
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{
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delete[] m_imageData;
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delete[] m_lineShiftData;
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delete[] m_outOfBoundsLine;
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}
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int getWidth()
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{
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return m_width;
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}
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int getHeight()
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{
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return m_height;
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}
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const int* getImageData()
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{
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return m_imageData;
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}
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const int* getLineShiftData()
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{
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return m_lineShiftData;
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}
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void selectRow(int line, float shift)
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{
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if ((line < m_height) && (line >= 0))
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{
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m_currentLine = m_imageData + line * m_width;
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m_lineShiftData[line] = (1.0f + shift) * 127.5f;
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}
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else
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{
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m_currentLine = m_outOfBoundsLine;
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}
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}
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void setSampleValue(int column, int value)
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{
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if ((column < m_width - 2) && (column >= -2))
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{
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m_currentLine[column + 2] = value;
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}
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}
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private:
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int m_width;
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int m_height;
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int* m_imageData;
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int* m_lineShiftData;
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int* m_currentLine;
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int* m_outOfBoundsLine;
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};
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class SDRGUI_API TVScreenAnalog : public QGLWidget, protected QOpenGLFunctions
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{
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Q_OBJECT
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QTimer m_updateTimer;
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bool m_isDataChanged;
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int m_textureLoc1;
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int m_textureLoc2;
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int m_imageWidthLoc;
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int m_imageHeightLoc;
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int m_texelWidthLoc;
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int m_texelHeightLoc;
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int m_vertexAttribIndex;
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int m_texCoordAttribIndex;
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QMutex m_buffersMutex;
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TVScreenAnalogBuffer *m_frontBuffer;
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TVScreenAnalogBuffer *m_backBuffer;
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QOpenGLShaderProgram *m_shader;
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QOpenGLTexture *m_imageTexture;
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QOpenGLTexture *m_lineShiftsTexture;
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public:
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TVScreenAnalog(QWidget *parent);
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~TVScreenAnalog();
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TVScreenAnalogBuffer *getBackBuffer();
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TVScreenAnalogBuffer *swapBuffers();
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void resizeTVScreen(int intCols, int intRows);
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private:
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void initializeTextures(TVScreenAnalogBuffer *buffer);
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void initializeGL() override;
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void paintGL() override;
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void resizeGL(int width, int height);
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private slots:
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void cleanup();
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void tick();
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};
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#endif // INCLUDE_TVSCREENANALOG_H
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