video-pc/AV/code/player/player_core_v2.cpp

#include "player_core_v2.h"
#include "../base/media_common.h"
#include "../base/logger.h"
#include "../base/types.h"
#include "../codec/codec_video_decoder.h"
#include "../codec/codec_audio_decoder.h"
#include "../utils/utils_synchronizer_v2.h"
#include <chrono>
#include <thread>
#include <algorithm>
#include <cmath>

namespace av {
namespace player {
PlayerCoreV2::PlayerCoreV2(const SyncConfigV2& syncConfig)
    : m_state(PlayerState::Idle)
    , m_eventCallback(nullptr)
    , m_formatContext(nullptr)
    // , m_openGLVideoRenderer(nullptr)  // 已移除
    , m_volume(1.0)
    , m_playbackSpeed(1.0)
    , m_seekTarget(-1)
    , m_seeking(false)
    , m_baseTime(0)
    , m_lastUpdateTime(0)
    , m_threadsShouldStop(false)
    , m_threadsRunning(false)
    , m_paused(false)
    , m_initialized(false)
    , m_frameCount(0)
    , m_lastFrameCount(0)
    , m_errorCount(0)
    , m_buffering(false)
    , m_bufferHealth(1.0)
{
    Logger::instance().info("PlayerCoreV2 created");

    try {
        // 初始化FFmpeg
        if (!initializeFFmpeg()) {
            Logger::instance().error("Failed to initialize FFmpeg");
            setState(PlayerState::Error);
            return;
        }
        
        // 创建分离的视频和音频包队列 - 使用高容量队列以避免丢帧
        m_videoPacketQueue = av::utils::PacketQueueFactory::createHighCapacityQueue(2000);  // 视频包队列，增大容量
        if (!m_videoPacketQueue) {
            Logger::instance().error("Failed to create video packet queue");
            setState(PlayerState::Error);
            return;
        }
        // 禁用丢包策略
        m_videoPacketQueue->setDropPolicy(false, true);
        
        m_audioPacketQueue = av::utils::PacketQueueFactory::createHighCapacityQueue(2000);  // 音频包队列，增大容量
        if (!m_audioPacketQueue) {
            Logger::instance().error("Failed to create audio packet queue");
            setState(PlayerState::Error);
            return;
        }
        // 禁用丢包策略
        m_audioPacketQueue->setDropPolicy(false, true);
        
        m_videoFrameQueue = av::utils::FrameQueueFactory::createHighCapacityQueue(100); // 增加视频帧队列容量并禁用丢帧
        if (!m_videoFrameQueue) {
            Logger::instance().error("Failed to create video frame queue");
            setState(PlayerState::Error);
            return;
        }
        // 禁用丢帧策略
        m_videoFrameQueue->setDropPolicy(false, true);
        
        m_audioFrameQueue = av::utils::FrameQueueFactory::createHighCapacityQueue(400); // 增加音频帧队列容量并禁用丢帧
        if (!m_audioFrameQueue) {
            Logger::instance().error("Failed to create audio frame queue");
            setState(PlayerState::Error);
            return;
        }
        // 禁用丢帧策略
        m_audioFrameQueue->setDropPolicy(false, true);
        
        // 创建改进的同步器
        m_synchronizer = std::make_unique<SynchronizerV2>(syncConfig);
        if (!m_synchronizer) {
            Logger::instance().error("Failed to create synchronizer");
            setState(PlayerState::Error);
            return;
        }

        // 设置同步器回调
        m_synchronizer->setSyncErrorCallback([this](double error, const std::string& reason) {
            handleSyncError(error, reason);
        });

        m_synchronizer->setFrameDropCallback([this](av::utils::ClockType type, int64_t pts) {
            std::lock_guard<std::mutex> lock(m_mutex);
            m_stats.droppedFrames++;
            if (m_eventCallback) {
                m_eventCallback->onFrameDropped(m_stats.droppedFrames);
            }
        });

        // 创建解码器
        m_videoDecoder = std::make_unique<VideoDecoder>();
        if (!m_videoDecoder) {
            Logger::instance().error("Failed to create video decoder");
            setState(PlayerState::Error);
            return;
        }
        
        m_audioDecoder = std::make_unique<AudioDecoder>();
        if (!m_audioDecoder) {
            Logger::instance().error("Failed to create audio decoder");
            setState(PlayerState::Error);
            return;
        }
        
        // 创建音频输出设备
        m_audioOutput = std::make_unique<AudioOutput>();
        if (!m_audioOutput) {
            Logger::instance().error("Failed to create audio output");
            setState(PlayerState::Error);
            return;
        }
        
        // 初始化性能监控
        m_lastStatsUpdate = std::chrono::steady_clock::now();
        m_lastCpuMeasure = m_lastStatsUpdate;

        m_initialized = true;
        Logger::instance().info("PlayerCoreV2 initialized successfully");

    } catch (const std::exception& e) {
        Logger::instance().error("Exception during PlayerCoreV2 initialization: " + std::string(e.what()));
        setState(PlayerState::Error);
        m_initialized = false;
    } catch (...) {
        Logger::instance().error("Unknown exception during PlayerCoreV2 initialization");
        setState(PlayerState::Error);
        m_initialized = false;
    }
}

PlayerCoreV2::~PlayerCoreV2() {
    Logger::instance().info("PlayerCoreV2 destroying...");
    stop();
    cleanup();
    Logger::instance().info("PlayerCoreV2 destroyed");
}

void PlayerCoreV2::setEventCallback(PlayerEventCallback* callback) {
    std::lock_guard<std::mutex> lock(m_mutex);
    m_eventCallback = callback;
}

ErrorCode PlayerCoreV2::openFile(const std::string& filename) {
    Logger::instance().info("Opening file: " + filename);
    
    if (!m_initialized) {
        Logger::instance().error("PlayerCoreV2 not initialized");
        return ErrorCode::NOT_INITIALIZED;
    }
    
    // 如果正在播放，先停止
    if (m_state != PlayerState::Idle) {
        stop();
    }
    
    setState(PlayerState::Opening);
    
    // 打开媒体文件
    if (!openMediaFile(filename)) {
        setState(PlayerState::Error);
        notifyError("Failed to open media file: " + filename);
        return ErrorCode::FILE_OPEN_FAILED;
    }
    
    // 设置媒体信息
    m_mediaInfo.filename = filename;
    
    // 设置解码器
    if (m_mediaInfo.hasVideo && !setupVideoDecoder()) {
        Logger::instance().error("Failed to setup video decoder");
        setState(PlayerState::Error);
        return ErrorCode::CODEC_OPEN_FAILED;
    }
    
    if (m_mediaInfo.hasAudio && !setupAudioDecoder()) {
        Logger::instance().error("Failed to setup audio decoder");
        setState(PlayerState::Error);
        return ErrorCode::CODEC_OPEN_FAILED;
    }
    
    // 注意：同步器的初始化已经在openMediaFile()中完成，这里不需要重复调用
    // 因为initialize()会重新选择主时钟，可能覆盖之前设置的流信息
    
    setState(PlayerState::Stopped);
    
    // 如果有视频流，通知需要初始化渲染器
    if (m_mediaInfo.hasVideo && m_eventCallback) {
        AVStream* videoStream = m_formatContext->streams[m_mediaInfo.videoStreamIndex];
        
        m_eventCallback->onVideoRendererInitRequired(
            videoStream->codecpar->width,
            videoStream->codecpar->height
        );
        
        Logger::instance().info("Video renderer initialization requested");
    }
    
    // 通知媒体信息变化
    if (m_eventCallback) {
        m_eventCallback->onMediaInfoChanged(m_mediaInfo);
    }
    
    Logger::instance().info("File opened successfully: " + filename);
    return ErrorCode::SUCCESS;
}

ErrorCode PlayerCoreV2::play() {
    Logger::instance().info("Starting playback");
    
    if (m_state == PlayerState::Playing) {
        Logger::instance().debug("Already playing");
        return ErrorCode::SUCCESS;
    }
    
    if (m_state != PlayerState::Stopped && m_state != PlayerState::Paused) {
        Logger::instance().error("Invalid state for play: " + std::to_string(static_cast<int>(m_state.load())));
        return ErrorCode::INVALID_STATE;
    }
    
    // 启动或恢复同步器
    if (m_synchronizer) {
        ErrorCode syncResult = ErrorCode::SUCCESS;
        if (m_state == PlayerState::Paused) {
            // 从暂停状态恢复，调用resume方法
            syncResult = m_synchronizer->resume();
        } else {
            // 从停止状态开始，调用start方法
            syncResult = m_synchronizer->start();
        }
        
        if (syncResult != ErrorCode::SUCCESS) {
            Logger::instance().error("Failed to start/resume synchronizer");
            return ErrorCode::SYNC_ERROR;
        }
    }

    // 根据当前状态设置播放开始时间
    if (m_state == PlayerState::Stopped) {
        // 从停止状态开始播放，重置所有时间相关变量
        m_baseTime = 0;
        m_frameCount = 0;
        m_lastFrameCount = 0;
        m_playStartTime = std::chrono::steady_clock::now();
        
        // 重置统计信息
        std::lock_guard<std::mutex> lock(m_mutex);
        m_stats = PlaybackStats();
        m_stats.playbackSpeed = m_playbackSpeed;
    } else if (m_state == PlayerState::Paused) {
        // 从暂停状态恢复播放，重新设置播放开始时间
        // m_baseTime已经在pause()方法中正确更新，这里只需要重新设置开始时间
        m_playStartTime = std::chrono::steady_clock::now();
        
        // 清除暂停标志并唤醒等待的线程，类似ffplay.c中的continue_read_thread机制
        {
            std::lock_guard<std::mutex> lock(m_pauseMutex);
            m_paused = false;
        }
        m_pauseCondition.notify_all();
    }
    
    // 启动音频输出设备
    if (m_audioOutput && m_mediaInfo.hasAudio) {
        if (m_state == PlayerState::Paused) {
            // 从暂停状态恢复音频
            try {
                m_audioOutput->resume();
            } catch (const std::exception& e) {
                Logger::instance().error("Failed to resume audio output: " + std::string(e.what()));
                // 尝试重新初始化音频设备
                try {
                    m_audioOutput->stop();
                    std::this_thread::sleep_for(std::chrono::milliseconds(100));
                    m_audioOutput->start();
                } catch (const std::exception& e2) {
                    Logger::instance().error("Failed to restart audio output: " + std::string(e2.what()));
                    Logger::instance().warning("Continuing playback without audio");
                }
            }
        } else {
            Logger::instance().info("Starting audio output device...");
            try {
                m_audioOutput->start();
                
                // 检查音频设备是否成功启动
                if (!m_audioOutput->isPlaying()) {
                    Logger::instance().error("Audio output device failed to start");
                    // 不要因为音频失败而停止整个播放，继续播放视频
                    Logger::instance().warning("Continuing playback without audio");
                }
            } catch (const std::exception& e) {
                 Logger::instance().error("Exception starting audio output: " + std::string(e.what()));
                 Logger::instance().warning("Continuing playback without audio");
             }
        }
    }
    
    // 根据状态启动或恢复线程
    if (m_state == PlayerState::Stopped) {
        // 从停止状态开始，需要启动所有线程
        
        // 启动播放线程
        if (m_mediaInfo.hasVideo && !startVideoPlayThread()) {
            Logger::instance().error("Failed to start video play thread");
            return ErrorCode::THREAD_ERROR;
        }
        
        if (m_mediaInfo.hasAudio && !startAudioPlayThread()) {
            Logger::instance().error("Failed to start audio play thread");
            return ErrorCode::THREAD_ERROR;
        }
        
        // 启动解码线程
        if (!startDecodeThreads()) {
            Logger::instance().error("Failed to start decode threads");
            return ErrorCode::THREAD_ERROR;
        }
        
        // 启动读取线程
        if (!startReadThread()) {
            Logger::instance().error("Failed to start read thread");
            return ErrorCode::THREAD_ERROR;
        }
        
        m_threadsRunning = true;
    }
    // 从暂停状态恢复时，线程已经在运行，只需要唤醒它们（已在上面完成）
    setState(PlayerState::Playing);
    
    Logger::instance().info("Playback started");
    return ErrorCode::SUCCESS;
}

ErrorCode PlayerCoreV2::pause() {
    Logger::instance().info("Pausing playback");
    
    if (m_state != PlayerState::Playing) {
        Logger::instance().debug("Not playing, cannot pause");
        return ErrorCode::INVALID_STATE;
    }
    // 设置暂停标志，让线程在内部循环中等待，而不是停止线程
    // 类似ffplay.c中的paused标志机制
    {
        std::lock_guard<std::mutex> lock(m_pauseMutex);
        Logger::instance().info("Setting m_paused to true");
        m_paused = true;

        m_videoPacketQueue->wakeup(); // 唤醒等待的解码线程

        m_audioPacketQueue->wakeup(); // 唤醒等待的解码线程

        m_videoFrameQueue->wakeup(); // 唤醒等待的播放线程

        m_audioFrameQueue->wakeup(); // 唤醒等待的播放线程

        Logger::instance().info("m_paused set to: " + std::to_string(m_paused.load()));
    }
    // 立即通知所有等待的线程检查暂停状态
    Logger::instance().info("Notifying all threads about pause state change");
    m_pauseCondition.notify_all();

    // 暂停同步器
    if (m_synchronizer && m_synchronizer->pause() != ErrorCode::SUCCESS) {
        Logger::instance().warning("Failed to pause synchronizer");
    }

    // 记录暂停时的播放时间
    if (m_playStartTime.time_since_epoch().count() != 0) {
        auto currentTime = std::chrono::steady_clock::now();
        auto elapsed = std::chrono::duration_cast<std::chrono::microseconds>(
            currentTime - m_playStartTime).count();
        m_baseTime += static_cast<int64_t>(elapsed * m_playbackSpeed);
        m_playStartTime = std::chrono::steady_clock::time_point{};
    }
    
    // 暂停音频输出
    if (m_audioOutput) {
        m_audioOutput->pause();
    }

    setState(PlayerState::Paused);
    Logger::instance().info("Playback paused (threads continue running)");
    return ErrorCode::SUCCESS;
}

ErrorCode PlayerCoreV2::stop() {
    Logger::instance().info("Stopping playback");
    
    if (m_state == PlayerState::Idle || m_state == PlayerState::Stopped) {
        Logger::instance().debug("Already stopped");
        return ErrorCode::SUCCESS;
    }

    // 停止同步器
    if (m_synchronizer) {
        m_synchronizer->stop();
    }

    // 停止音频输出
    if (m_audioOutput) {
        m_audioOutput->stop();
    }
    
    // 通知关闭视频渲染器
    if (m_eventCallback) {
        m_eventCallback->onVideoRendererCloseRequired();
    }
    
    // 清除暂停标志并唤醒所有等待的线程
    {
        std::lock_guard<std::mutex> lock(m_pauseMutex);
        m_paused = false;
    }
    m_pauseCondition.notify_all();
    
    // 停止所有线程
    stopAllThreads();
    
    // 重置解码器
    resetDecoders();
    
    // 清空队列
    if (m_videoPacketQueue) m_videoPacketQueue->clear();
    if (m_audioPacketQueue) m_audioPacketQueue->clear();
    if (m_videoFrameQueue) m_videoFrameQueue->clear();
    if (m_audioFrameQueue) m_audioFrameQueue->clear();
    
    // 重置时间
    m_baseTime = 0;
    m_playStartTime = std::chrono::steady_clock::time_point{};
    
    setState(PlayerState::Stopped);
    Logger::instance().info("Playback stopped");
    return ErrorCode::SUCCESS;
}

ErrorCode PlayerCoreV2::seek(int64_t timestamp) {
    Logger::instance().info("Seeking to: " + std::to_string(timestamp));
    
    if (m_state == PlayerState::Idle || m_state == PlayerState::Opening) {
        Logger::instance().error("Invalid state for seek");
        return ErrorCode::INVALID_STATE;
    }
    
    std::unique_lock<std::mutex> lock(m_seekMutex);
    
    // 设置seek目标和精确范围参数
    m_seekTarget = timestamp;
    m_seekMinTime = INT64_MIN;  // 允许向前跳转的最小时间
    m_seekMaxTime = INT64_MAX;  // 允许向后跳转的最大时间
    m_seekFlags = AVSEEK_FLAG_BACKWARD;  // 默认向后跳转到关键帧
    m_seeking = true;
    
    // 更新基准时间为跳转目标时间
    m_baseTime = timestamp;
    m_playStartTime = std::chrono::steady_clock::now();

    // 重置同步器
    if (m_synchronizer) {
        m_synchronizer->reset();
    }

    // 清空队列
    flushBuffers();
    
    setState(PlayerState::Seeking);
    
    // 通知seek条件
    m_seekCondition.notify_all();
    
    Logger::instance().info("Precise seek initiated with avformat_seek_file support");
    return ErrorCode::SUCCESS;
}

ErrorCode PlayerCoreV2::setPlaybackSpeed(double speed) {
    if (speed <= 0.0 || speed > 4.0) {
        Logger::instance().error("Invalid playback speed: " + std::to_string(speed));
        return ErrorCode::INVALID_PARAMS;
    }
    
    std::lock_guard<std::mutex> lock(m_mutex);
    m_playbackSpeed = speed;

    // 设置同步器的播放速度
    if (m_synchronizer) {
        m_synchronizer->setPlaybackSpeed(speed);
    }

    // 设置音频输出的播放速度
    if (m_audioOutput) {
        m_audioOutput->setPlaybackSpeed(speed);
    }
    
    // 更新统计信息
    m_stats.playbackSpeed = speed;
    
    Logger::instance().info("Playback speed set to: " + std::to_string(speed));
    return ErrorCode::SUCCESS;
}

MediaInfo PlayerCoreV2::getMediaInfo() const {
    std::lock_guard<std::mutex> lock(m_mutex);
    return m_mediaInfo;
}

PlaybackStats PlayerCoreV2::getStats() const {
    std::lock_guard<std::mutex> lock(m_mutex);
    PlaybackStats stats = m_stats;
    
    // 更新当前时间
    stats.currentTime = getCurrentTime();
    
    // 更新队列大小
    if (m_videoPacketQueue) stats.queuedPackets += m_videoPacketQueue->size();
    if (m_audioPacketQueue) stats.queuedPackets += m_audioPacketQueue->size();
    if (m_videoFrameQueue) stats.queuedVideoFrames = m_videoFrameQueue->size();
    if (m_audioFrameQueue) stats.queuedAudioFrames = m_audioFrameQueue->size();

    // 更新同步统计
    if (m_synchronizer) {
        auto syncStats = m_synchronizer->getStats();
        stats.syncError = syncStats.audioVideoSyncError;
        stats.avgSyncError = syncStats.avgSyncError;
        stats.maxSyncError = syncStats.maxSyncError;
        stats.droppedFrames = syncStats.droppedFrames;
        stats.duplicatedFrames = syncStats.duplicatedFrames;
    }

    return stats;
}

int64_t PlayerCoreV2::getCurrentTime() const {
    if (m_state == PlayerState::Idle || m_state == PlayerState::Stopped) {
        return 0;
    }
    
    // 如果同步器可用，尝试使用主时钟的播放时间
    if (m_synchronizer) {
        // 获取主时钟时间（秒），转换为微秒
        double masterClockTime = m_synchronizer->getMasterClock();
        // 确保时间值合理（非负且不是NaN）
        if (masterClockTime >= 0.0 && !std::isnan(masterClockTime)) {
            return static_cast<int64_t>(masterClockTime * 1000000);
        }
    }

    // 回退到原来的计算方式（兼容性保证）
    if (m_state == PlayerState::Paused) {
        return m_baseTime;
    }

    if (m_playStartTime.time_since_epoch().count() == 0) {
        return m_baseTime;
    }

    auto currentTime = std::chrono::steady_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::microseconds>(
        currentTime - m_playStartTime).count();

    return m_baseTime + static_cast<int64_t>(elapsed * m_playbackSpeed);
}

double PlayerCoreV2::getPlaybackSpeed() const {
    return m_playbackSpeed;
}

void PlayerCoreV2::setVolume(double volume) {
    volume = std::max(0.0, std::min(1.0, volume));
    m_volume = volume;
    
    // 同时设置音频输出设备的音量
    if (m_audioOutput) {
        m_audioOutput->setVolume(volume);
    }
    
    Logger::instance().debug("Volume set to: " + std::to_string(volume));
}

// 流控制接口实现
void PlayerCoreV2::enableVideoStream(bool enable) {
    if (m_videoStreamEnabled == enable) {
        return; // 状态未变，不需要处理
    }
    
    m_videoStreamEnabled = enable;
    Logger::instance().info("Video stream " + std::string(enable ? "enabled" : "disabled"));
    
    // 如果播放器已经打开文件，需要更新同步器的流信息
    if (m_formatContext && m_synchronizer) {
        bool useAudio = m_mediaInfo.hasAudio && m_audioStreamEnabled;
        bool useVideo = m_mediaInfo.hasVideo && m_videoStreamEnabled;
        m_synchronizer->setStreamInfo(useAudio, useVideo);

        // 如果正在播放，需要重新启动播放
        if (m_state == PlayerState::Playing || m_state == PlayerState::Paused) {
            // 停止当前播放
            PlayerState oldState = m_state;
            stop();
            // 重新开始播放
            openFile(m_mediaInfo.filename);
            if (oldState == PlayerState::Playing) {
                play();
            }
        }
    }
}

void PlayerCoreV2::enableAudioStream(bool enable) {
    if (m_audioStreamEnabled == enable) {
        return; // 状态未变，不需要处理
    }
    
    m_audioStreamEnabled = enable;
    Logger::instance().info("Audio stream " + std::string(enable ? "enabled" : "disabled"));
    
    // 如果播放器已经打开文件，需要更新同步器的流信息
    if (m_formatContext && m_synchronizer) {
        bool useAudio = m_mediaInfo.hasAudio && m_audioStreamEnabled;
        bool useVideo = m_mediaInfo.hasVideo && m_videoStreamEnabled;
        m_synchronizer->setStreamInfo(useAudio, useVideo);
        
        // 如果正在播放，需要重新启动播放
        if (m_state == PlayerState::Playing) {
            // 暂停当前播放
            pause();
            // 重新开始播放
            play();
        }
    }
}

bool PlayerCoreV2::isVideoStreamEnabled() const {
    return m_videoStreamEnabled;
}

bool PlayerCoreV2::isAudioStreamEnabled() const {
    return m_audioStreamEnabled;
}

void PlayerCoreV2::setSyncConfig(const SyncConfigV2& config) {
    if (m_synchronizer) {
        m_synchronizer->setConfig(config);
    }
}

SyncConfigV2 PlayerCoreV2::getSyncConfig() const {
    if (m_synchronizer) {
        return m_synchronizer->getConfig();
    }
    return SyncConfigV2();
}

// void PlayerCoreV2::setOpenGLVideoRenderer(OpenGLVideoWidget* renderer) {
//     m_openGLVideoRenderer = renderer;
// }

AVFramePtr PlayerCoreV2::getNextVideoFrame() {
    if (!m_videoFrameQueue || m_state != PlayerState::Playing) {
        return nullptr;
    }
    
    return m_videoFrameQueue->pop();
}

AVFramePtr PlayerCoreV2::getNextAudioFrame() {
    if (!m_audioFrameQueue || m_state != PlayerState::Playing) {
        return nullptr;
    }
    
    return m_audioFrameQueue->pop();
}

void PlayerCoreV2::update() {
    if (!m_initialized) {
        return;
    }
    
    // 更新同步状态
    updateSynchronization();
    
    // 更新统计信息
    auto now = std::chrono::steady_clock::now();
    if (std::chrono::duration_cast<std::chrono::milliseconds>(now - m_lastStatsUpdate).count() > 500) {
        updateStats();
        updatePerformanceStats();
        m_lastStatsUpdate = now;
        
        // 通知位置变化
        notifyPositionChanged();
    }
    
    // 检查错误恢复
    if (m_errorCount > 0) {
        auto timeSinceError = std::chrono::duration_cast<std::chrono::seconds>(now - m_lastErrorTime).count();
        if (timeSinceError > 5) { // 5秒后重置错误计数
            m_errorCount = 0;
        }
    }
}

std::string PlayerCoreV2::getDebugInfo() const {
    std::ostringstream oss;
    
    oss << "PlayerCoreV2 Debug Info:\n";
    oss << "  State: " << static_cast<int>(m_state.load()) << "\n";
    oss << "  Initialized: " << (m_initialized ? "Yes" : "No") << "\n";
    oss << "  Threads Running: " << (m_threadsRunning ? "Yes" : "No") << "\n";
    oss << "  Current Time: " << getCurrentTime() << " us\n";
    oss << "  Playback Speed: " << m_playbackSpeed << "x\n";
    oss << "  Volume: " << m_volume << "\n";
    oss << "  Error Count: " << m_errorCount << "\n";

    if (m_synchronizer) {
        oss << "\n" << m_synchronizer->getDebugInfo();
    }

    return oss.str();
}

void PlayerCoreV2::dumpStats() const {
    PlaybackStats stats = getStats();
    
    Logger::instance().info("=== PlayerCoreV2 Statistics ===");
    Logger::instance().info("Current Time: " + std::to_string(stats.currentTime) + " us");
    Logger::instance().info("Total Frames: " + std::to_string(stats.totalFrames));
    Logger::instance().info("Dropped Frames: " + std::to_string(stats.droppedFrames));
    Logger::instance().info("Duplicated Frames: " + std::to_string(stats.duplicatedFrames));
    Logger::instance().info("Sync Error: " + std::to_string(stats.syncError * 1000) + " ms");
    Logger::instance().info("Avg Sync Error: " + std::to_string(stats.avgSyncError * 1000) + " ms");
    Logger::instance().info("Max Sync Error: " + std::to_string(stats.maxSyncError * 1000) + " ms");
    Logger::instance().info("CPU Usage: " + std::to_string(stats.cpuUsage) + "%");
    Logger::instance().info("Memory Usage: " + std::to_string(stats.memoryUsage) + " MB");
    Logger::instance().info("Queued Packets: " + std::to_string(stats.queuedPackets));
    Logger::instance().info("Queued Video Frames: " + std::to_string(stats.queuedVideoFrames));
    Logger::instance().info("Queued Audio Frames: " + std::to_string(stats.queuedAudioFrames));
    Logger::instance().info("===============================");
}

bool PlayerCoreV2::openMediaFile(const std::string& filename) {
    // 关闭之前的文件
    if (m_formatContext) {
        avformat_close_input(&m_formatContext);
        m_formatContext = nullptr;
    }
    
    // 分配格式上下文
    m_formatContext = avformat_alloc_context();
    if (!m_formatContext) {
        Logger::instance().error("Failed to allocate format context");
        return false;
    }
    
    // 打开输入文件
    if (avformat_open_input(&m_formatContext, filename.c_str(), nullptr, nullptr) < 0) {
        Logger::instance().error("Failed to open input file: " + filename);
        avformat_free_context(m_formatContext);
        m_formatContext = nullptr;
        return false;
    }
    
    // 查找流信息
    if (avformat_find_stream_info(m_formatContext, nullptr) < 0) {
        Logger::instance().error("Failed to find stream info");
        avformat_close_input(&m_formatContext);
        return false;
    }
    
    // 查找视频和音频流
    m_mediaInfo.videoStreamIndex = av_find_best_stream(m_formatContext, AVMEDIA_TYPE_VIDEO, -1, -1, nullptr, 0);
    m_mediaInfo.audioStreamIndex = av_find_best_stream(m_formatContext, AVMEDIA_TYPE_AUDIO, -1, -1, nullptr, 0);
    
    m_mediaInfo.hasVideo = (m_mediaInfo.videoStreamIndex >= 0);
    m_mediaInfo.hasAudio = (m_mediaInfo.audioStreamIndex >= 0);
    
    if (!m_mediaInfo.hasVideo && !m_mediaInfo.hasAudio) {
        Logger::instance().error("No video or audio streams found");
        avformat_close_input(&m_formatContext);
        return false;
    }
    
    // 获取媒体信息
    m_mediaInfo.duration = m_formatContext->duration;
    m_mediaInfo.bitrate = m_formatContext->bit_rate;
    
    if (m_mediaInfo.hasVideo) {
        AVStream* videoStream = m_formatContext->streams[m_mediaInfo.videoStreamIndex];
        m_mediaInfo.width = videoStream->codecpar->width;
        m_mediaInfo.height = videoStream->codecpar->height;
        
        // 计算帧率
        if (videoStream->avg_frame_rate.den != 0) {
            m_mediaInfo.fps = av_q2d(videoStream->avg_frame_rate);
        } else if (videoStream->r_frame_rate.den != 0) {
            m_mediaInfo.fps = av_q2d(videoStream->r_frame_rate);
        } else {
            m_mediaInfo.fps = 25.0; // 默认帧率
        }
        
        Logger::instance().info("Video stream found: " + std::to_string(m_mediaInfo.width) + "x" + 
                               std::to_string(m_mediaInfo.height) + " @ " + std::to_string(m_mediaInfo.fps) + " fps");
    }
    
    if (m_mediaInfo.hasAudio) {
        AVStream* audioStream = m_formatContext->streams[m_mediaInfo.audioStreamIndex];
        m_mediaInfo.sampleRate = audioStream->codecpar->sample_rate;
        m_mediaInfo.channels = audioStream->codecpar->ch_layout.nb_channels;
        
        Logger::instance().info("Audio stream found: " + std::to_string(m_mediaInfo.sampleRate) + " Hz, " + 
                               std::to_string(m_mediaInfo.channels) + " channels");
    }

    // 设置同步器的流信息
    if (m_synchronizer) {
        bool useAudio = m_mediaInfo.hasAudio && m_audioStreamEnabled;
        bool useVideo = m_mediaInfo.hasVideo && m_videoStreamEnabled;
        m_synchronizer->setStreamInfo(useAudio, useVideo);
        Logger::instance().info("Synchronizer stream info set: hasAudio=" + std::to_string(useAudio) +
                               ", hasVideo=" + std::to_string(useVideo));

        // 在设置流信息后初始化同步器，确保主时钟选择基于正确的流信息
        if (m_synchronizer->initialize() != ErrorCode::SUCCESS) {
            Logger::instance().error("Failed to initialize synchronizer");
            return false;
        }
        Logger::instance().info("Synchronizer initialized with correct stream info");
    }

    Logger::instance().info("Media file opened successfully: " + filename);
    return true;
}

bool PlayerCoreV2::setupVideoDecoder() {
    if (!m_mediaInfo.hasVideo || !m_videoDecoder) {
        return false;
    }
    
    AVStream* videoStream = m_formatContext->streams[m_mediaInfo.videoStreamIndex];
    
    // 查找解码器
    const AVCodec* codec = avcodec_find_decoder(videoStream->codecpar->codec_id);
    if (!codec) {
        Logger::instance().error("Video codec not found");
        return false;
    }
    
    Logger::instance().info("Found video codec: " + std::string(codec->name));
    Logger::instance().info("Video stream info: width=" + std::to_string(videoStream->codecpar->width) + 
                           ", height=" + std::to_string(videoStream->codecpar->height) + 
                           ", format=" + std::to_string(videoStream->codecpar->format));
    
    // 创建视频解码器参数
    VideoDecoderParams videoParams;
    videoParams.codecName = codec->name;
    videoParams.width = videoStream->codecpar->width;
    videoParams.height = videoStream->codecpar->height;
    videoParams.pixelFormat = static_cast<AVPixelFormat>(videoStream->codecpar->format);
    videoParams.hardwareAccel = false; // 先禁用硬件加速来排除问题
    videoParams.lowLatency = false;
    
    Logger::instance().info("Video decoder params: codec=" + videoParams.codecName + 
                           ", size=" + std::to_string(videoParams.width) + "x" + std::to_string(videoParams.height) + 
                           ", format=" + std::to_string(static_cast<int>(videoParams.pixelFormat)));
    
    // 初始化视频解码器
    if (m_videoDecoder->initialize(videoParams) != ErrorCode::SUCCESS) {
        Logger::instance().error("Failed to initialize video decoder");
        return false;
    }
    
    // 设置流参数
    if (m_videoDecoder->setStreamParameters(videoStream->codecpar) != ErrorCode::SUCCESS) {
        Logger::instance().error("Failed to set video decoder stream parameters");
        return false;
    }
    
    // 打开视频解码器
    if (m_videoDecoder->open(videoParams) != ErrorCode::SUCCESS) {
        Logger::instance().error("Failed to open video decoder");
        return false;
    }
    
    Logger::instance().info("Video decoder setup successfully");
    return true;
}

bool PlayerCoreV2::setupAudioDecoder() {
    if (!m_mediaInfo.hasAudio || !m_audioDecoder) {
        return false;
    }
    
    AVStream* audioStream = m_formatContext->streams[m_mediaInfo.audioStreamIndex];
    
    // 查找解码器
    const AVCodec* codec = avcodec_find_decoder(audioStream->codecpar->codec_id);
    if (!codec) {
        Logger::instance().error("Audio codec not found");
        return false;
    }
    
    // 分配解码器上下文
    AVCodecContext* codecContext = avcodec_alloc_context3(codec);
    if (!codecContext) {
        Logger::instance().error("Failed to allocate audio codec context");
        return false;
    }
    
    // 复制流参数到解码器上下文
    if (avcodec_parameters_to_context(codecContext, audioStream->codecpar) < 0) {
        Logger::instance().error("Failed to copy audio codec parameters");
        avcodec_free_context(&codecContext);
        return false;
    }
    
    // 打开解码器
    if (avcodec_open2(codecContext, codec, nullptr) < 0) {
        Logger::instance().error("Failed to open audio codec");
        avcodec_free_context(&codecContext);
        return false;
    }
    
    // 创建音频解码器参数
    AudioDecoderParams audioParams;
    audioParams.codecName = codec->name;
    audioParams.sampleRate = codecContext->sample_rate;
    audioParams.channels = codecContext->ch_layout.nb_channels;
    audioParams.sampleFormat = codecContext->sample_fmt;
    audioParams.lowLatency = false;
    audioParams.enableResampling = true;
    
    // 初始化音频解码器
    if (m_audioDecoder->initialize(audioParams) != ErrorCode::SUCCESS) {
        Logger::instance().error("Failed to initialize audio decoder");
        avcodec_free_context(&codecContext);
        return false;
    }
    
    // 打开音频解码器
    if (m_audioDecoder->open(audioParams) != ErrorCode::SUCCESS) {
        Logger::instance().error("Failed to open audio decoder");
        avcodec_free_context(&codecContext);
        return false;
    }
    
    // 初始化音频输出设备
    if (m_audioOutput && !m_audioOutput->initialize(codecContext->sample_rate, 
                                                   codecContext->ch_layout.nb_channels, 
                                                   codecContext->sample_fmt)) {
        Logger::instance().error("Failed to initialize audio output");
        avcodec_free_context(&codecContext);
        return false;
    }
    // 释放解码器上下文
    avcodec_free_context(&codecContext);
    
    Logger::instance().info("Audio decoder setup successfully");
    return true;
}

void PlayerCoreV2::resetDecoders() {
    if (m_videoDecoder) {
        m_videoDecoder->reset();
    }
    if (m_audioDecoder) {
        m_audioDecoder->reset();
    }
}

bool PlayerCoreV2::startReadThread() {
    try {
        // 确保之前的线程已经完全停止
        if (m_readThread.joinable()) {
            Logger::instance().warning("Read thread still running, waiting for it to stop...");
            m_readThread.join();
        }
        
        m_readThread = std::thread(&PlayerCoreV2::readThreadFunc, this);
        Logger::instance().info("Read thread started");
        return true;
    } catch (const std::exception& e) {
        Logger::instance().error("Failed to start read thread: " + std::string(e.what()));
        return false;
    }
}

bool PlayerCoreV2::startDecodeThreads() {
    try {
        if (m_mediaInfo.hasVideo) {
            // 确保之前的视频解码线程已经完全停止
            if (m_videoDecodeThread.joinable()) {
                Logger::instance().warning("Video decode thread still running, waiting for it to stop...");
                m_videoDecodeThread.join();
            }
            
            m_videoDecodeThread = std::thread(&PlayerCoreV2::videoDecodeThreadFunc, this);
            Logger::instance().info("Video decode thread started");
        }
        
        if (m_mediaInfo.hasAudio) {
            // 确保之前的音频解码线程已经完全停止
            if (m_audioDecodeThread.joinable()) {
                Logger::instance().warning("Audio decode thread still running, waiting for it to stop...");
                m_audioDecodeThread.join();
            }
            
            m_audioDecodeThread = std::thread(&PlayerCoreV2::audioDecodeThreadFunc, this);
            Logger::instance().info("Audio decode thread started");
        }
        
        return true;
    } catch (const std::exception& e) {
        Logger::instance().error("Failed to start decode threads: " + std::string(e.what()));
        return false;
    }
}

bool PlayerCoreV2::startVideoPlayThread() {
    try {
        // 确保之前的视频播放线程已经完全停止
        if (m_videoPlayThread.joinable()) {
            Logger::instance().warning("Video play thread still running, waiting for it to stop...");
            m_videoPlayThread.join();
        }
        
        m_videoPlayThread = std::thread(&PlayerCoreV2::videoPlayThreadFunc, this);
        Logger::instance().info("Video play thread started");
        return true;
    } catch (const std::exception& e) {
        Logger::instance().error("Failed to start video play thread: " + std::string(e.what()));
        return false;
    }
}

bool PlayerCoreV2::startAudioPlayThread() {
    try {
        // 确保之前的音频播放线程已经完全停止
        if (m_audioPlayThread.joinable()) {
            Logger::instance().warning("Audio play thread still running, waiting for it to stop...");
            m_audioPlayThread.join();
        }
        
        m_audioPlayThread = std::thread(&PlayerCoreV2::audioPlayThreadFunc, this);
        Logger::instance().info("Audio play thread started");
        return true;
    } catch (const std::exception& e) {
        Logger::instance().error("Failed to start audio play thread: " + std::string(e.what()));
        return false;
    }
}

bool PlayerCoreV2::initializeFFmpeg() {
    // FFmpeg初始化逻辑
    av_log_set_level(AV_LOG_WARNING);
    return true;
}

void PlayerCoreV2::cleanup() {
    stopAllThreads();
    
    if (m_formatContext) {
        avformat_close_input(&m_formatContext);
        m_formatContext = nullptr;
    }

    // if (m_synchronizer) {
    //     m_synchronizer->close();
    // }
}

void PlayerCoreV2::setState(PlayerState newState) {
    PlayerState oldState = m_state.exchange(newState);
    if (oldState != newState) {
        notifyStateChanged(newState);
    }
}

void PlayerCoreV2::notifyStateChanged(PlayerState newState) {
    if (m_eventCallback) {
        m_eventCallback->onStateChanged(newState);
    }
}

void PlayerCoreV2::notifyError(const std::string& error) {
    Logger::instance().error(error);
    if (m_eventCallback) {
        m_eventCallback->onErrorOccurred(error);
    }
}

void PlayerCoreV2::notifyPositionChanged() {
    if (m_eventCallback) {
        m_eventCallback->onPositionChanged(getCurrentTime());
    }
}

void PlayerCoreV2::handleSyncError(double error, const std::string& reason) {
    Logger::instance().warning("Sync error: " + std::to_string(error * 1000) + "ms, reason: " + reason);
    
    if (m_eventCallback) {
        m_eventCallback->onSyncError(error, reason);
    }
    
    // 如果同步误差太大，尝试恢复
    if (error > 0.2) { // 200ms
        attemptRecovery();
    }
}

void PlayerCoreV2::attemptRecovery() {
    m_errorCount++;
    m_lastErrorTime = std::chrono::steady_clock::now();
    
    Logger::instance().warning("Attempting recovery, error count: " + std::to_string(m_errorCount.load()));
    
    if (m_errorCount > 5) {
        Logger::instance().error("Too many errors, stopping playback");
        handleError("Too many sync errors");
        return;
    }

    // // 重置同步器
    // if (m_synchronizer) {
    //     m_synchronizer->reset();
    // }

    // 清空部分缓冲区
    if (m_videoFrameQueue) {
        m_videoFrameQueue->clear();
    }
    if (m_audioFrameQueue) {
        m_audioFrameQueue->clear();
    }
}

void PlayerCoreV2::handleError(const std::string& error) {
    setState(PlayerState::Error);
    notifyError(error);
}

void PlayerCoreV2::updateSynchronization() {
    if (!m_synchronizer || !m_threadsRunning) {
        return;
    }

    // 同步器会在内部自动更新
    // 更新同步器统计信息
    //m_synchronizer->updateStats();

    // 获取同步器统计信息并更新播放器统计
    std::lock_guard<std::mutex> lock(m_mutex);
    auto syncStats = m_synchronizer->getStats();
    m_stats.syncError = syncStats.audioVideoSyncError;
    m_stats.avgSyncError = syncStats.avgSyncError;
    m_stats.maxSyncError = syncStats.maxSyncError;
    m_stats.droppedFrames = syncStats.droppedFrames;
    m_stats.duplicatedFrames = syncStats.duplicatedFrames;
}

void PlayerCoreV2::updateStats() {
    std::lock_guard<std::mutex> lock(m_mutex);
    
    // 更新帧率统计
    int64_t currentFrameCount = m_frameCount;
    int64_t frameDiff = currentFrameCount - m_lastFrameCount;
    m_lastFrameCount = currentFrameCount;
    
    // 计算比特率等其他统计信息
    if (m_formatContext) {
        m_stats.bitrate = m_formatContext->bit_rate / 1000.0; // kbps
    }
}

void PlayerCoreV2::updatePerformanceStats() {
    std::lock_guard<std::mutex> lock(m_mutex);
    
    m_stats.cpuUsage = calculateCpuUsage();
    m_stats.memoryUsage = calculateMemoryUsage();
}

double PlayerCoreV2::calculateCpuUsage() {
    return 0.0;
}

double PlayerCoreV2::calculateMemoryUsage() {
    return 0.0;
}

void PlayerCoreV2::stopAllThreads() {
    Logger::instance().info("Stopping all threads...");
    
    m_threadsShouldStop = true;
    
    // 唤醒所有等待的队列，确保线程能够检查停止标志
    flushBuffers();
    
    // 等待线程结束，添加超时保护
    auto joinWithTimeout = [](std::thread& t, const std::string& name) {
        if (t.joinable()) {
            Logger::instance().info("Waiting for " + name + " to stop...");
            t.join();
            Logger::instance().info(name + " stopped");
        }
    };
    
    joinWithTimeout(m_readThread, "read thread");
    joinWithTimeout(m_videoDecodeThread, "video decode thread");
    joinWithTimeout(m_audioDecodeThread, "audio decode thread");
    joinWithTimeout(m_videoPlayThread, "video play thread");
    joinWithTimeout(m_audioPlayThread, "audio play thread");
    
    m_threadsRunning = false;
    Logger::instance().info("All threads stopped successfully");
}

void PlayerCoreV2::flushBuffers() {
    if (m_videoPacketQueue) {
        m_videoPacketQueue->clear();
        m_videoPacketQueue->wakeup(); // 唤醒等待的解码线程
    }
    if (m_audioPacketQueue) {
        m_audioPacketQueue->clear();
        m_audioPacketQueue->wakeup(); // 唤醒等待的解码线程
    }
    if (m_videoFrameQueue) {
        m_videoFrameQueue->clear();
        m_videoFrameQueue->wakeup(); // 唤醒等待的播放线程
    }
    if (m_audioFrameQueue) {
        m_audioFrameQueue->clear();
        m_audioFrameQueue->wakeup(); // 唤醒等待的播放线程
    }
}

void PlayerCoreV2::readThreadFunc() {
    Logger::instance().info("Read thread started");
    
    AVPacket* packet = av_packet_alloc();
    if (!packet) {
        Logger::instance().error("Failed to allocate packet");
        return;
    }
    
    while (!m_threadsShouldStop) {
        // 检查暂停状态，类似ffplay.c中的paused检查
        bool pausedState = m_paused.load();
        Logger::instance().debug("Read thread loop - m_paused: " + std::to_string(pausedState));
        if (pausedState) {
            Logger::instance().info("Read thread entering pause wait");
            std::unique_lock<std::mutex> lock(m_pauseMutex);
            m_pauseCondition.wait(lock, [this] { return !m_paused || m_threadsShouldStop; });
            if (m_threadsShouldStop) {
                break;
            }
            Logger::instance().info("Read thread exiting pause wait");
            // 暂停状态结束后，继续下一次循环
            continue;
        }
        
        // 检查是否需要seek
        if (m_seeking) {
            std::unique_lock<std::mutex> lock(m_seekMutex);
            
            // 获取seek参数
            int64_t seekMinTime = m_seekMinTime;
            int64_t seekTarget = m_seekTarget;
            int64_t seekMaxTime = m_seekMaxTime;
            int flags = m_seekFlags;

            Logger::instance().info("Performing precise seek - min: " + std::to_string(seekMinTime) + 
                                   ", target: " + std::to_string(seekTarget) + 
                                   ", max: " + std::to_string(seekMaxTime) + 
                                   ", flags: " + std::to_string(flags));

            // 首先尝试定位到最近的关键帧以确保视频解码正常
            int ret = av_seek_frame(m_formatContext, -1, seekTarget, AVSEEK_FLAG_BACKWARD);
            if (ret < 0) {
                Logger::instance().warning("Video keyframe seek failed, trying precise seek");
                // 如果关键帧定位失败，回退到精确seek
                ret = avformat_seek_file(m_formatContext, -1, seekMinTime, seekTarget, seekMaxTime, flags);
                if (ret < 0) {
                    Logger::instance().error("All seek methods failed");
                } else {
                    Logger::instance().info("Fallback precise seek completed to: " + std::to_string(seekTarget));
                }
            } else {
                Logger::instance().info("Keyframe seek completed successfully to target: " + std::to_string(seekTarget));
            }
            
            // 清空缓冲区
            flushBuffers();
            
            // 重置解码器
            resetDecoders();

            // 重置时间
            if (flags & AVSEEK_FLAG_BYTE) {
                m_synchronizer->setClock(av::utils::ClockType::EXTERNAL, NAN, 0);
            } else {
                m_synchronizer->setClock(av::utils::ClockType::EXTERNAL,
                                         seekTarget / (double) AV_TIME_BASE,
                                         0);
            }
            
            m_seeking = false;
            setState(m_state == PlayerState::Seeking ? PlayerState::Playing : m_state.load());

            lock.unlock();
            m_seekCondition.notify_all();
        }
        
        // 检查队列是否接近容量上限 - 使用队列容量的90%作为警告阈值，但不丢弃包
        bool videoQueueNearFull = m_videoPacketQueue && m_videoPacketQueue->size() > 800; 
        bool audioQueueNearFull = m_audioPacketQueue && m_audioPacketQueue->size() > 800; 
        if (videoQueueNearFull || audioQueueNearFull) { 
            // 队列接近满，暂停一段时间让解码线程处理
            Logger::instance().warning("Packet queue is getting large: Video=" + 
                                    std::to_string(m_videoPacketQueue ? m_videoPacketQueue->size() : 0) + 
                                    ", Audio=" + std::to_string(m_audioPacketQueue ? m_audioPacketQueue->size() : 0) + 
                                    ". Slowing down read thread.");
            std::this_thread::sleep_for(std::chrono::milliseconds(50));
            continue;
        }
        
        // 在读取数据包前检查暂停状态，避免在读取期间阻塞
        if (m_paused.load()) {
            Logger::instance().debug("Read thread detected pause before av_read_frame");
            continue;
        }
        
        // 读取数据包
        int ret = av_read_frame(m_formatContext, packet);
        if (ret < 0) {
            if (ret == AVERROR_EOF) {
                Logger::instance().info("End of file reached, sending EOF packets to queues");
                
                // 向视频和音频队列分别发送EOF标记，让解码线程知道文件结束
                if (m_videoPacketQueue && m_mediaInfo.hasVideo) {
                    AVPacket* eofPacket = av_packet_alloc();
                    if (eofPacket) {
                        eofPacket->data = nullptr;
                        eofPacket->size = 0;
                        eofPacket->stream_index = -1; // 特殊标记表示EOF
                        m_videoPacketQueue->push(eofPacket);
                        Logger::instance().info("EOF packet sent to video queue");
                    }
                }
                
                if (m_audioPacketQueue && m_mediaInfo.hasAudio) {
                    AVPacket* eofPacket = av_packet_alloc();
                    if (eofPacket) {
                        eofPacket->data = nullptr;
                        eofPacket->size = 0;
                        eofPacket->stream_index = -1; // 特殊标记表示EOF
                        m_audioPacketQueue->push(eofPacket);
                        Logger::instance().info("EOF packet sent to audio queue");
                    }
                }
                break;
            } else {
                Logger::instance().error("Error reading frame: " + std::to_string(ret));
                std::this_thread::sleep_for(std::chrono::milliseconds(10));
                continue;
            }
        }
        
        // 根据流索引将数据包分发到对应队列
        if (packet->stream_index == m_mediaInfo.videoStreamIndex && m_videoStreamEnabled) {
            // 视频包放入视频队列 - 不考虑队列是否已满，确保不丢包
            if (m_videoPacketQueue) {
                AVPacket* packetCopy = av_packet_alloc();
                if (packetCopy && av_packet_ref(packetCopy, packet) == 0) {
                    m_videoPacketQueue->push(packetCopy);
                    
                    // 记录队列大小，用于监控
                    if (m_videoPacketQueue->size() % 100 == 0) {
                        Logger::instance().debug("Video packet queue size: " + std::to_string(m_videoPacketQueue->size()));
                    }
                } else {
                    av_packet_free(&packetCopy);
                }
            }
        } else if (packet->stream_index == m_mediaInfo.audioStreamIndex && m_audioStreamEnabled) {
            // 音频包放入音频队列 - 不考虑队列是否已满，确保不丢包
            if (m_audioPacketQueue) {
                AVPacket* packetCopy = av_packet_alloc();
                if (packetCopy && av_packet_ref(packetCopy, packet) == 0) {
                    m_audioPacketQueue->push(packetCopy);
                    // 记录队列大小，用于监控
                    if (m_audioPacketQueue->size() % 100 == 0) {
                        Logger::instance().debug("Audio packet queue size: " + std::to_string(m_audioPacketQueue->size()));
                    }
                } else {
                    av_packet_free(&packetCopy);
                }
            }
        }
        m_audioPacketQueue->wakeup();
        m_videoPacketQueue->wakeup();

        av_packet_unref(packet);
    }
    
    av_packet_free(&packet);
    Logger::instance().info("Read thread finished");
}

void PlayerCoreV2::videoDecodeThreadFunc() {
    Logger::instance().info("Video decode thread started");
    
    int packetCount = 0;
    int frameCount = 0;
    while (!m_threadsShouldStop) {
        // 检查暂停状态，类似ffplay.c中的paused检查
        bool pausedState = m_paused.load();
        Logger::instance().debug("Video decode thread loop - m_paused: "
                                 + std::to_string(pausedState));
        if (pausedState) {
            Logger::instance().info("Video decode thread entering pause wait");
            std::unique_lock<std::mutex> lock(m_pauseMutex);
            m_pauseCondition.wait(lock, [this] { return !m_paused || m_threadsShouldStop; });
            if (m_threadsShouldStop) {
                break;
            }
            Logger::instance().info("Video decode thread exiting pause wait");
            // 暂停状态结束后，继续下一次循环
            continue;
        }
        if (!m_videoPacketQueue || !m_videoFrameQueue || !m_videoDecoder) {
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }
        if (m_seeking) {
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }
        Logger::instance().info("Video decode thread read Packet111");
        // 从视频包队列获取包
        AVPacket* packet = nullptr;
        while (!m_threadsShouldStop && !packet) {
            // 在 pop 操作前检查暂停状态，避免在 pop 期间阻塞
            if (m_paused.load()) {
                Logger::instance().debug("Video decode thread detected pause before pop");
                break;
            }
            Logger::instance().info("Video decode thread read Packet");
            packet = m_videoPacketQueue->pop(10); // 减少超时时间以提高seek响应速度
            Logger::instance().infof("Video decode thread read Packet %d", packet);
            if (packet) {
                // 检查是否是EOF标记
                if (packet->stream_index == -1 && packet->data == nullptr) {
                    Logger::instance().info("Video decode thread received EOF packet");
                    av_packet_free(&packet);
                    
                    // 向视频帧队列发送EOF标记
                    if (m_videoFrameQueue) {
                        AVFramePtr eofFrame = makeAVFrame();
                        if (eofFrame) {
                            eofFrame->data[0] = nullptr;
                            eofFrame->width = 0;
                            eofFrame->height = 0;
                            eofFrame->pts = AV_NOPTS_VALUE;
                            m_videoFrameQueue->push(std::move(eofFrame));
                            Logger::instance().info("EOF frame sent to video frame queue");
                        }
                    }
                    
                    // 视频解码线程结束
                    Logger::instance().info("Video decode thread finishing due to EOF");
                    return;
                }
            }
            if (!packet) {
                std::this_thread::sleep_for(std::chrono::milliseconds(5));
            }
        }

        if (!packet) {
            Logger::instance().debug("Video decode thread: no more packets available");
            continue;
        }

        packetCount++;
        Logger::instance().debug("Video decode thread got packet #" + std::to_string(packetCount) + 
                                ", size=" + std::to_string(packet->size) + 
                                ", pts=" + std::to_string(packet->pts));
        
        // 解码视频帧
        AVPacketPtr packetPtr(packet);
        std::vector<AVFramePtr> frames;
        ErrorCode decodeResult = m_videoDecoder->decode(packetPtr, frames);
        
        Logger::instance().debug("Video decode result: " + std::to_string(static_cast<int>(decodeResult)) + 
                                ", frames count: " + std::to_string(frames.size()));
        
        if (decodeResult == ErrorCode::SUCCESS) {
            for (auto& framePtr : frames) {
                if (framePtr && !m_threadsShouldStop) {
                    frameCount++;
                    Logger::instance().debug("Processing video frame #" + std::to_string(frameCount) + 
                                            ", width=" + std::to_string(framePtr->width) + 
                                            ", height=" + std::to_string(framePtr->height) + 
                                            ", pts=" + std::to_string(framePtr->pts));
                    
                    // 设置帧的时间戳（保持原始PTS，在播放时再转换）
                    if (framePtr->pts != AV_NOPTS_VALUE) {
                        Logger::instance().debug("Frame PTS: " + std::to_string(framePtr->pts));
                    }
                    
                    // 将帧放入队列 - 不丢弃任何帧
                    // 使用移动语义转移智能指针所有权
                    m_videoFrameQueue->push(std::move(framePtr));
                    m_frameCount++;
                    Logger::instance().debug("Video frame pushed to queue, queue size: " + std::to_string(m_videoFrameQueue->size()));
                    
                    // 如果队列大小超过警告阈值，记录警告但不丢弃
                    if (m_videoFrameQueue->size() > 80) {
                        Logger::instance().warning("Video frame queue is getting large: " + std::to_string(m_videoFrameQueue->size()) + 
                                                " frames. Performance may be affected.");
                    }
                }
            }
        } else {
            Logger::instance().warning("Video decode failed with error: " + std::to_string(static_cast<int>(decodeResult)));
        }
    }

    Logger::instance().info("Video decode thread finished, packets processed: "
                            + std::to_string(packetCount)
                            + ", frames decoded: " + std::to_string(frameCount));
}

void PlayerCoreV2::audioDecodeThreadFunc() {
    Logger::instance().info("Audio decode thread started");
    
    int packetCount = 0;
    int frameCount = 0;
    while (!m_threadsShouldStop) {
        // 检查暂停状态，类似ffplay.c中的paused检查
        bool pausedState = m_paused.load();
        Logger::instance().debug("Audio decode thread loop - m_paused: "
                                 + std::to_string(pausedState));
        if (pausedState) {
            Logger::instance().info("Audio decode thread entering pause wait");
            std::unique_lock<std::mutex> lock(m_pauseMutex);
            m_pauseCondition.wait(lock, [this] { return !m_paused || m_threadsShouldStop; });
            if (m_threadsShouldStop) {
                break;
            }
            Logger::instance().info("Audio decode thread exiting pause wait");
            // 暂停状态结束后，继续下一次循环
            continue;
        }

        if (!m_audioPacketQueue || !m_audioFrameQueue || !m_audioDecoder) {
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }
        if (m_seeking) {
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }
        // 从音频包队列获取包
        AVPacket* packet = nullptr;
        while (!m_threadsShouldStop && !packet) {
            // 在 pop 操作前检查暂停状态，避免在 pop 期间阻塞
            if (m_paused.load()) {
                Logger::instance().debug("Audio decode thread detected pause before pop");
                break;
            }
            packet = m_audioPacketQueue->pop(10); // 减少超时时间以提高seek响应速度
            if (packet) {
                // 检查是否是EOF标记
                if (packet->stream_index == -1 && packet->data == nullptr) {
                    Logger::instance().info("Audio decode thread received EOF packet");
                    av_packet_free(&packet);
                    
                    // 向音频帧队列发送EOF标记
                    if (m_audioFrameQueue) {
                        AVFramePtr eofFrame = makeAVFrame();
                        if (eofFrame) {
                            eofFrame->data[0] = nullptr;
                            eofFrame->nb_samples = 0;
                            eofFrame->pts = AV_NOPTS_VALUE;
                            m_audioFrameQueue->push(std::move(eofFrame));
                            Logger::instance().info("EOF frame sent to audio frame queue");
                        }
                    }
                    
                    // 音频解码线程结束
                    Logger::instance().info("Audio decode thread finishing due to EOF");
                    return;
                }
            }
            if (!packet) {
                std::this_thread::sleep_for(std::chrono::milliseconds(5));
            }
        }
        
        if (!packet) {
            Logger::instance().debug("Audio decode thread: no more packets available");
            continue;
        }
        
        packetCount++;
        Logger::instance().debug("Audio decode thread got packet #" + std::to_string(packetCount) + 
                                ", size=" + std::to_string(packet->size) + 
                                ", pts=" + std::to_string(packet->pts));
        
        // 解码音频帧
        AVPacketPtr packetPtr(packet);
        std::vector<AVFramePtr> frames;
        ErrorCode decodeResult = m_audioDecoder->decode(packetPtr, frames);
        
        Logger::instance().debug("Audio decode result: " + std::to_string(static_cast<int>(decodeResult)) + 
                                ", frames count: " + std::to_string(frames.size()));
        
        if (decodeResult == ErrorCode::SUCCESS) {
            for (auto& framePtr : frames) {
                if (framePtr && !m_threadsShouldStop) {
                    frameCount++;
                    Logger::instance().debug("Processing audio frame #" + std::to_string(frameCount) + 
                                            ", nb_samples=" + std::to_string(framePtr->nb_samples) + 
                                            ", pts=" + std::to_string(framePtr->pts));
                    
                    // 设置帧的时间戳（保持原始PTS，在播放时再转换）
                    if (framePtr->pts != AV_NOPTS_VALUE) {
                        Logger::instance().debug("Audio Frame PTS: " + std::to_string(framePtr->pts));
                    }
                    
                    // 将帧放入队列 - 不丢弃任何帧
                    // 使用移动语义转移智能指针所有权
                    m_audioFrameQueue->push(std::move(framePtr));
                    Logger::instance().debug("Audio frame pushed to queue, queue size: " + std::to_string(m_audioFrameQueue->size()));
                    
                    // 如果队列大小超过警告阈值，记录警告但不丢弃
                    if (m_audioFrameQueue->size() > 300) {
                        Logger::instance().warning("Audio frame queue is getting large: " + std::to_string(m_audioFrameQueue->size()) + 
                                                " frames. Performance may be affected.");
                    }
                }
            }
        } else {
            Logger::instance().warning("Audio decode failed with error: " + std::to_string(static_cast<int>(decodeResult)));
        }
        
        // packet已经被packetPtr管理，不需要手动释放
    }
    
    Logger::instance().info("Audio decode thread finished, packets processed: " + std::to_string(packetCount) + 
                           ", frames decoded: " + std::to_string(frameCount));
}

void PlayerCoreV2::videoPlayThreadFunc() {
    Logger::instance().info("Video play thread started");

    // 用于计算帧持续时间的变量
    AVFramePtr lastFrame = nullptr;

    while (!m_threadsShouldStop) {
        // 检查暂停状态，类似ffplay.c中的paused检查
        bool pausedState = m_paused.load();
        Logger::instance().debug("Video play thread loop - m_paused: "
                                 + std::to_string(pausedState));
        if (pausedState) {
            Logger::instance().info("Video play thread entering pause wait");
            std::unique_lock<std::mutex> lock(m_pauseMutex);
            m_pauseCondition.wait(lock, [this] { return !m_paused || m_threadsShouldStop; });
            if (m_threadsShouldStop) {
                break;
            }
            Logger::instance().info("Video play thread exiting pause wait");
            // 暂停状态结束后，继续下一次循环
            continue;
        }

        if (!m_videoFrameQueue || !m_synchronizer) {
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }

        // 在pop之前再次检查暂停状态，避免在pop期间阻塞
        if (m_paused.load()) {
            Logger::instance().debug("Video play thread detected pause before pop");
            continue;
        }

        // 获取视频帧，使用更短的超时时间以提高暂停响应速度
        AVFramePtr frame = m_videoFrameQueue->pop(1); // 使用1ms超时以快速响应暂停
        if (!frame) {
            // 检查是否应该继续等待
            if (m_threadsShouldStop) {
                break;
            }
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }

        // 获取帧后立即检查暂停状态，如果已暂停则释放帧并继续
        bool pausedAfterPop = m_paused.load();
        Logger::instance().debug("Video play thread after pop - m_paused: " + std::to_string(pausedAfterPop));
        if (pausedAfterPop) {
            Logger::instance().info("Video play thread releasing frame due to pause");
            frame.reset(); // 智能指针自动释放
            continue;
        }

        Logger::instance().debug("Video play thread got frame, pts=" + std::to_string(frame->pts));

        // frame 本身就是智能指针，直接使用
        AVFramePtr& framePtr = frame;
        
        // 使用同步器计算视频帧显示时间
        double pts = frame->pts * av_q2d(m_formatContext->streams[m_mediaInfo.videoStreamIndex]->time_base);
        
        // 只在非暂停状态下更新时钟和处理帧
        m_synchronizer->setClock(av::utils::ClockType::VIDEO, pts, 0);
        
        // 计算帧持续时间
        double last_duration = 0.0;
        if (lastFrame && lastFrame->pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE) {
            // 计算两帧之间的时间差
            double last_pts = lastFrame->pts * av_q2d(m_formatContext->streams[m_mediaInfo.videoStreamIndex]->time_base);
            last_duration = pts - last_pts;
            if (last_duration < 0 || last_duration > 10.0) {
                // 如果持续时间不合理，使用帧率的倒数作为默认值
                last_duration = 1.0 / m_mediaInfo.fps;
            }
        } else {
            // 如果没有上一帧，使用帧率的倒数作为默认值
            last_duration = 1.0 / m_mediaInfo.fps;
        }
        
        // 计算视频帧延迟并决定是否显示
        FrameDecision decision = m_synchronizer->synchronizeVideo(pts, 0, last_duration);
        
        if (decision.action == FrameAction::DISPLAY) {
            // 如果需要延迟显示，等待指定时间
            if (decision.delay > 0.0) {
                std::this_thread::sleep_for(
                    std::chrono::microseconds(static_cast<int64_t>(decision.delay * 1000000)));
            }

            // 通知显示帧
            if (m_eventCallback) {
                m_eventCallback->onVideoFrameReady(framePtr.get());
                Logger::instance().debug("Video frame ready for display, pts=" + std::to_string(pts) + ", delay=" + std::to_string(decision.delay));
            }
            
            // 更新上一帧指针
            lastFrame.reset(); // 智能指针自动释放旧帧
            
            // 创建当前帧的副本
            AVFramePtr clonedFrame = makeAVFrame();
            if (clonedFrame && av_frame_ref(clonedFrame.get(), frame.get()) == 0) {
                lastFrame = std::move(clonedFrame);
            }
        } else if (decision.action == FrameAction::DROP) {
            Logger::instance().debug("Video frame dropped due to sync, pts=" + std::to_string(pts) + ", error=" + std::to_string(decision.syncError));
        }
    }

    // 清理最后一帧 - 智能指针自动清理
    lastFrame.reset();

    Logger::instance().info("Video play thread finished");
}

void PlayerCoreV2::audioPlayThreadFunc() {
    Logger::instance().info("Audio play thread started");

    int frameCount = 0;
    while (!m_threadsShouldStop) {
        // 检查暂停状态，类似ffplay.c中的paused检查
        bool pausedState = m_paused.load();
        Logger::instance().debug("Audio play thread loop - m_paused: "
                                 + std::to_string(pausedState));
        if (pausedState) {
            Logger::instance().info("Audio play thread entering pause wait");
            std::unique_lock<std::mutex> lock(m_pauseMutex);
            m_pauseCondition.wait(lock, [this] { return !m_paused || m_threadsShouldStop; });
            if (m_threadsShouldStop) {
                break;
            }
            Logger::instance().info("Audio play thread exiting pause wait");
            // 暂停状态结束后，继续下一次循环
            continue;
        }

        if (!m_audioFrameQueue || !m_synchronizer || !m_audioOutput) {
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }

        // 在pop之前再次检查暂停状态，避免在pop期间阻塞
        if (m_paused.load()) {
            Logger::instance().debug("Audio play thread detected pause before pop");
            continue;
        }

        // 获取音频帧，使用更短的超时时间以提高暂停响应速度
        AVFramePtr frame = m_audioFrameQueue->pop(1); // 使用1ms超时以快速响应暂停
        if (!frame) {
            // 检查是否应该继续等待
            if (m_threadsShouldStop) {
                break;
            }
            std::this_thread::sleep_for(std::chrono::milliseconds(10));
            continue;
        }
        
        // 获取帧后立即检查暂停状态，如果已暂停则释放帧并继续
        bool pausedAfterPop = m_paused.load();
        Logger::instance().debug("Audio play thread after pop - m_paused: " + std::to_string(pausedAfterPop));
        if (pausedAfterPop) {
            Logger::instance().info("Audio play thread releasing frame due to pause");
            frame.reset(); // 智能指针自动释放
            continue;
        }
        
        // 检查是否是EOF帧
        if (frame->data[0] == nullptr && frame->nb_samples == 0) {
            Logger::instance().info("Audio play thread received EOF frame, playback completed");
            frame.reset(); // 智能指针自动释放

            // 通知播放完成
            setState(PlayerState::Stopped);
            Logger::instance().info("Audio playback finished naturally");
            return;
        }

        frameCount++;
        Logger::instance().debug("Audio play thread got frame #" + std::to_string(frameCount)
                                 + ", pts=" + std::to_string(frame->pts)
                                 + ", nb_samples=" + std::to_string(frame->nb_samples));

        // frame 本身就是智能指针，直接使用
        AVFramePtr& framePtr = frame;

        // 计算音频PTS
        double pts = frame->pts
                     * av_q2d(m_formatContext->streams[m_mediaInfo.audioStreamIndex]->time_base);

        // 只在非暂停状态下更新音频时钟
        m_synchronizer->setClock(av::utils::ClockType::AUDIO, pts, 0);

        // 同步音频样本数量
        int originalSamples = frame->nb_samples;
        int adjustedSamples = m_synchronizer->synchronizeAudio((short*) frame->data[0],
                                                               frame->nb_samples,
                                                               pts);

        if (adjustedSamples != originalSamples) {
            Logger::instance().debug("Audio samples adjusted from " + std::to_string(originalSamples)
                                     + " to " + std::to_string(adjustedSamples) + " for sync");
        }
        if (m_paused) {
            continue;
        }
        {
            Logger::instance().debug("Writing audio frame to output device");
            bool writeResult = m_audioOutput->writeFrame(framePtr);
            Logger::instance().debug("Audio frame write result: " + std::to_string(writeResult));

            // 如果写入失败，等待一段时间避免快速循环
            if (!writeResult) {
                Logger::instance().warning("Audio frame write failed, waiting before next frame");
                std::this_thread::sleep_for(std::chrono::milliseconds(10));
            }
        }

        // framePtr 会自动释放内存，无需手动调用 av_frame_free
    }

    Logger::instance().info("Audio play thread finished, total frames processed: "
                            + std::to_string(frameCount));
}

} // namespace player
} // namespace av