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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Linaro
*
* viewfinder_GL.h - OpenGL Viewfinder for rendering by OpenGL shader
*
*/
#pragma once
#include <array>
#include <memory>
#include <QImage>
#include <QMutex>
#include <QOpenGLBuffer>
#include <QOpenGLFunctions>
#include <QOpenGLShader>
#include <QOpenGLShaderProgram>
#include <QOpenGLTexture>
#include <QOpenGLWidget>
#include <QSize>
#include <libcamera/formats.h>
#include <libcamera/framebuffer.h>
#include "viewfinder.h"
class ViewFinderGL : public QOpenGLWidget,
public ViewFinder,
protected QOpenGLFunctions
{
Q_OBJECT
public:
ViewFinderGL(QWidget *parent = nullptr);
~ViewFinderGL();
const QList<libcamera::PixelFormat> &nativeFormats() const override;
int setFormat(const libcamera::PixelFormat &format, const QSize &size,
const libcamera::ColorSpace &colorSpace,
unsigned int stride) override;
void render(libcamera::FrameBuffer *buffer, Image *image) override;
void stop() override;
QImage getCurrentImage() override;
Q_SIGNALS:
void renderComplete(libcamera::FrameBuffer *buffer);
protected:
void initializeGL() override;
void paintGL() override;
void resizeGL(int w, int h) override;
QSize sizeHint() const override;
private:
bool selectFormat(const libcamera::PixelFormat &format);
void selectColorSpace(const libcamera::ColorSpace &colorSpace);
void configureTexture(QOpenGLTexture &texture);
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