android_multiviewwer/app/src/main/cpp/Renderer.h

#pragma once

#include "MediaAsset.h"
#include "Preloader.h"
#include <string>
#include <sstream>
#include <iomanip>
#include <chrono>
#include <mutex>
#include <random>
#include <android/native_window.h>
#include <android/native_window_jni.h>

class Renderer {
public:
    enum class AnimationMode {
        PAN = 0,
        ZOOM = 1,
        NONE = 2,
        RANDOM = 3,
        PAN_ONE_WAY = 4,
        PAGE_TURN = 5
    };

    Renderer();
    ~Renderer();

    void setNextMedia(int fd);
    void renderFrame(ANativeWindow* window);
    void release();
    std::string getDebugInfo() const;

    void setAnimationSpeed(float speed);
    void setAnimationMode(int mode);
    void setFadeDuration(int durationMs);
    void setPageTurnDelay(int delayMs); // <-- 새로운 setter 선언

private:
    std::mutex renderMutex_;
    Preloader preloader_;
    MediaAsset currentMedia_;
    MediaAsset nextMedia_;

    AnimationMode configuredAnimationMode_ = AnimationMode::PAN;
    AnimationMode activeAnimationMode_ = AnimationMode::PAN;
    long long fadeDurationMs_ = 3000;
    long long pageTurnDelayMs_ = 5000; // <-- PAGE_TURN 모드 대기 시간 (기본 5초)
    float animationSpeed_ = 1.0f;

    // std::chrono::steady_clock::time_point transitionStartTime_; // <-- 삭제
    // bool isTransitioning_ = false; // <-- 삭제
    // float transitionProgress_ = 0.0f; // <-- 삭제

    std::chrono::steady_clock::time_point fadeStartTime_;
    std::chrono::steady_clock::time_point pageTurnStartTime_; // <-- PAGE_TURN 대기 시작 시간 추가
    bool isFading_ = false;

    float currentOffsetX_ = 0.0f;
    float currentOffsetY_ = 0.0f;
    int xDirection_ = 1;
    int yDirection_ = 1;

    float currentZoom_ = 1.0f;
    int zoomDirection_ = 1;

    bool animationCycleComplete_ = false;

    std::mt19937 randomEngine_;

    void determineActiveAnimationMode();
    void calculateFitScaleAndOffset(const MediaAsset& media, int surfaceWidth, int surfaceHeight,
                                    float& outScale, float& outOffsetX, float& outOffsetY) const;
    void drawMedia(ANativeWindow_Buffer& buffer, MediaAsset& media, float alpha, float offsetX, float offsetY, float scaleMultiplier);
    void renderVideoFrame(MediaAsset& media, ANativeWindow_Buffer& buffer, float scale, float offsetX, float offsetY, float alpha);
    void renderImageFrame(const MediaAsset& media, ANativeWindow_Buffer& buffer, float scale, float offsetX, float offsetY, float alpha);
};