/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2020, Linaro * * viewfinder_GL.h - OpenGL Viewfinder for rendering by OpenGL shader * */ #ifndef __VIEWFINDER_GL_H__ #define __VIEWFINDER_GL_H__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "viewfinder.h" class ViewFinderGL : public QOpenGLWidget, public ViewFinder, protected QOpenGLFunctions { Q_OBJECT public: ViewFinderGL(QWidget *parent = nullptr); ~ViewFinderGL(); const QList &nativeFormats() const override; int setFormat(const libcamera::PixelFormat &format, const QSize &size) override; void render(libcamera::FrameBuffer *buffer, MappedBuffer *map) 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 configureTexture(QOpenGLTexture &texture); bool createFragmentShader(); bool createVertexShader(); void removeShader(); void doRender(); /* Captured image size, format and buffer */ libcamera::FrameBuffer *buffer_; libcamera::PixelFormat format_; QSize size_; unsigned char *data_; /* Shaders */ QOpenGLShaderProgram shaderProgram_; std::unique_ptr vertexShader_; std::unique_ptr fragmentShader_; QString fragmentShaderFile_; QStringList fragmentShaderDefines_; /* Vertex buffer */ QOpenGLBuffer vertexBuffer_; /* Textures */ std::array, 3> textures_; /* YUV texture parameters */ GLuint textureUniformU_; GLuint textureUniformV_; GLuint textureUniformY_; GLuint textureUniformStepX_; unsigned int horzSubSample_; unsigned int vertSubSample_; QMutex mutex_; /* Prevent concurrent access to image_ */ }; #endif /* __VIEWFINDER_GL_H__ */ committer'>committer

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