mirror of
https://github.com/f4exb/sdrangel.git
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250 lines
6.8 KiB
C++
250 lines
6.8 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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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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// //
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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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#include <algorithm>
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#include <QPainter>
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#include <QMouseEvent>
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#include <QOpenGLContext>
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#include <QOpenGLFunctions>
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#include <QSurface>
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#include <QDebug>
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#include <QMutexLocker>
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#include "tvscreen.h"
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// Note: When this object is created, QWidget* is converted to bool
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TVScreen::TVScreen(bool color, QWidget* parent) :
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QOpenGLWidget(parent),
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m_glShaderArray(color)
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{
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setAttribute(Qt::WA_OpaquePaintEvent);
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connect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
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m_timer.start(40); // capped at 25 FPS
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m_lastData = nullptr;
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m_dataChanged = false;
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m_glContextInitialized = false;
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//Par défaut
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m_askedCols = TV_COLS;
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m_askedRows = TV_ROWS;
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m_cols = TV_COLS;
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m_rows = TV_ROWS;
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}
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TVScreen::~TVScreen()
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{
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}
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void TVScreen::setColor(bool color)
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{
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m_glShaderArray.setColor(color);
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}
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QRgb* TVScreen::getRowBuffer(int row)
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{
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if (!m_glContextInitialized) {
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return nullptr;
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}
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return m_glShaderArray.GetRowBuffer(row);
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}
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void TVScreen::renderImage(unsigned char * data)
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{
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m_lastData = data;
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m_dataChanged = true;
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}
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void TVScreen::resetImage()
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{
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m_glShaderArray.ResetPixels();
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}
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void TVScreen::resetImage(int alpha)
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{
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m_glShaderArray.ResetPixels(alpha);
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}
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void TVScreen::resizeTVScreen(int cols, int intRows)
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{
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qDebug("TVScreen::resizeTVScreen: cols: %d, rows: %d", cols, intRows);
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QMutexLocker mlock(&m_mutex);
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m_askedCols = cols;
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m_askedRows = intRows;
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m_cols = cols;
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m_rows = intRows;
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}
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void TVScreen::getSize(int& cols, int& intRows) const
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{
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cols = m_cols;
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intRows = m_rows;
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}
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void TVScreen::initializeGL()
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{
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QMutexLocker mlock(&m_mutex);
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QOpenGLContext *glCurrentContext = QOpenGLContext::currentContext();
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if (glCurrentContext)
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{
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if (QOpenGLContext::currentContext()->isValid())
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{
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qDebug() << "TVScreen::initializeGL: context:"
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<< " major: " << (QOpenGLContext::currentContext()->format()).majorVersion()
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<< " minor: " << (QOpenGLContext::currentContext()->format()).minorVersion()
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<< " ES: " << (QOpenGLContext::currentContext()->isOpenGLES() ? "yes" : "no");
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}
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else
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{
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qDebug() << "TVScreen::initializeGL: current context is invalid";
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}
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}
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else
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{
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qCritical() << "TVScreen::initializeGL: no current context";
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return;
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}
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QSurface *surface = glCurrentContext->surface();
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if (surface == nullptr)
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{
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qCritical() << "TVScreen::initializeGL: no surface attached";
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return;
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}
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else
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{
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if (surface->surfaceType() != QSurface::OpenGLSurface)
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{
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qCritical() << "TVScreen::initializeGL: surface is not an OpenGLSurface: "
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<< surface->surfaceType()
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<< " cannot use an OpenGL context";
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return;
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}
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else
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{
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qDebug() << "TVScreen::initializeGL: OpenGL surface:"
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<< " class: " << (surface->surfaceClass() == QSurface::Window ? "Window" : "Offscreen");
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}
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}
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connect(
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glCurrentContext,
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&QOpenGLContext::aboutToBeDestroyed,
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this,
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&TVScreen::cleanup
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);
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m_glContextInitialized = true;
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}
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void TVScreen::resizeGL(int width, int height)
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{
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QMutexLocker mlock(&m_mutex);
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QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
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f->glViewport(0, 0, width, height);
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}
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void TVScreen::paintGL()
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{
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if (!m_mutex.tryLock(2)) {
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return;
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}
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m_dataChanged = false;
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if ((m_askedCols != 0) && (m_askedRows != 0))
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{
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int major = 0, minor = 0;
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if (QOpenGLContext::currentContext())
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{
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major = QOpenGLContext::currentContext()->format().majorVersion();
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minor = QOpenGLContext::currentContext()->format().minorVersion();
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}
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m_glShaderArray.initializeGL(major, minor, m_askedCols, m_askedRows);
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m_askedCols = 0;
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m_askedRows = 0;
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}
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m_glShaderArray.RenderPixels(m_lastData);
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m_mutex.unlock();
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}
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void TVScreen::mousePressEvent(QMouseEvent* event)
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{
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(void) event;
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}
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void TVScreen::tick()
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{
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if (m_dataChanged) {
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update();
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}
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}
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void TVScreen::connectTimer(const QTimer& timer)
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{
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qDebug() << "TVScreen::connectTimer";
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disconnect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
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connect(&timer, SIGNAL(timeout()), this, SLOT(tick()));
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m_timer.stop();
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}
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void TVScreen::cleanup()
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{
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QMutexLocker mlock(&m_mutex);
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if (m_glContextInitialized) {
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m_glShaderArray.cleanup();
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}
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}
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bool TVScreen::selectRow(int line)
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{
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if (m_glContextInitialized) {
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return m_glShaderArray.SelectRow(line);
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} else {
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return false;
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}
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}
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bool TVScreen::setDataColor(int col, int red, int green, int blue)
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{
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if (m_glContextInitialized) {
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return m_glShaderArray.SetDataColor(col, qRgb(blue, green, red)); // FIXME: blue <> red inversion in shader
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} else {
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return false;
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}
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}
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bool TVScreen::setDataColor(int col, int red, int green, int blue, int alpha)
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{
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if (m_glContextInitialized) {
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return m_glShaderArray.SetDataColor(col, qRgba(blue, green, red, alpha)); // FIXME: blue <> red inversion in shader
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} else {
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return false;
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}
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}
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