#ifndef GLWIDGET_H
#define GLWIDGET_H

#include <QOpenGLWidget>
#include <QOpenGLFunctions>
#include <QOpenGLShaderProgram>
#include <QMutex>

#include <cuda_runtime.h>
#include <cuda_gl_interop.h>

extern "C" {
#include <libavcodec/avcodec.h>
}

class VideoDecoder;

class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions {
    Q_OBJECT
public:
    explicit GLWidget(QWidget *parent = nullptr);
    ~GLWidget() override;

    void setVideoDecoder(VideoDecoder *decoder);

    // Ajustes del Shader CRT
    void setCrtEnabled(bool enabled);
    void setCurvature(float value);
    void setScanlineDensity(float value);
    void setScanlineOpacity(float value);
    void setAberration(float value);
    void setVignette(float value);
    void setBrightness(float value);

    void clearVideo();

public slots:
    void onFrameReady();

protected:
    void initializeGL() override;
    void resizeGL(int w, int h) override;
    void paintGL() override;

private:
    void cleanupCudaGL();

    VideoDecoder *m_videoDecoder;

    QOpenGLShaderProgram m_shaderProgram;
    
    // Texturas de OpenGL para NV12
    GLuint m_texY;
    GLuint m_texUV;
    GLuint m_vbo;

    // Recursos gráficos registrados de CUDA
    cudaGraphicsResource_t m_cudaResourceY;
    cudaGraphicsResource_t m_cudaResourceUV;

    // Fotograma local reutilizable
    AVFrame *m_localFrame;

    // Dimensiones de texturas registradas en CUDA
    int m_allocatedWidth;
    int m_allocatedHeight;

    // Estado del Shader
    bool m_crtEnabled;
    float m_curvature;
    float m_scanlineDensity;
    float m_scanlineOpacity;
    float m_aberration;
    float m_vignette;
    float m_brightness;
};

#endif // GLWIDGET_H