2020-12-10 1.更新

JLChen

2020-12-10 a8c5f79b0d93adfa7f23601dd0fee30edc14f0d4

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// 
// Created by lilin on 2019-8-20. 
// 
 
#include "FrameQueue.h" 
 
FrameQueue::FrameQueue() { 
    pthread_mutex_init(&mutexPacket, NULL); 
    pthread_cond_init(&condPacket, NULL); 
} 
 
 
int FrameQueue::putAvFrame(AVFrame *frame) { 
    pthread_mutex_lock(&mutexPacket); 
    queueFrame.push(frame); 
    pthread_cond_signal(&condPacket); 
    pthread_mutex_unlock(&mutexPacket); 
    return 0; 
} 
 
AVFrame *FrameQueue::getAvFrame() { 
    pthread_mutex_lock(&mutexPacket); 
 
    AVFrame *p = NULL; 
    if(!queueFrame.empty()) 
    { 
        p = queueFrame.front(); 
        queueFrame.pop(); 
    } else{ 
        pthread_cond_wait(&condPacket, &mutexPacket); 
    } 
    pthread_mutex_unlock(&mutexPacket); 
    return p; 
} 
 
void FrameQueue::clearQueue() { 
    pthread_mutex_lock(&mutexPacket); 
    while(true) 
    { 
        if(queueFrame.empty()) 
        { 
            break; 
        } 
        AVFrame *p = queueFrame.front(); 
        queueFrame.pop(); 
        av_frame_free(&p); 
        p = NULL; 
    } 
    pthread_mutex_unlock(&mutexPacket); 
} 
 
void FrameQueue::notifyQueue() { 
 
    pthread_mutex_lock(&mutexPacket); 
    pthread_cond_signal(&condPacket); 
    pthread_mutex_unlock(&mutexPacket); 
 
} 
 
FrameQueue::~FrameQueue() { 
    clearQueue(); 
    pthread_mutex_destroy(&mutexPacket); 
    pthread_cond_destroy(&condPacket); 
}