ffplay frame queue分析 ffplay用frame queue保存解码后的数据。 首先定义了一个结构体Frame用于保存一帧视频画面、音频或者字幕: typedefstructFrame{AVFrame*frame;//视频或音频的解码数据AVSubtitlesub;//解码的字幕数据intserial;doublepts;/* presentation timestamp for the frame */doubleduration;/* estimated du...
FrameQueue队列分析 FFplay 播放器有两种队列,PacketQueue 跟 FrameQueue。FrameQueue 的数据就是从 PacketQueue 里面解码出来的(会经过滤镜)。 PakceQueue 是用 FifoBuffer 来实现环形队列的,而FrameQu...
数组⽅式的环形缓冲区适合于事先明确了缓冲区的最⼤容量的情形。 2 ffplay中创建了三个frame_queue:⾳频frame_queue,视频frame_queue,字幕frame_queue。每⼀个frame_queue⼀个写端⼀个读端,写端位于解码线程,读端位于播放线程。 问题 1 Frame queue[FRAME_QUEUE_SIZE] 与 max_size 关系?
} //返回要填充的frame_queue中的Frame。 staticFrame*frame_queue_peek_writable(FrameQueue*f) { /* wait until we have space to put a new frame */ SDL_LockMutex(f->mutex); while(f->size >=f->max_size && !f->pktq->abort_request) { SDL_CondWait(f->cond,f->mutex); } SDL_Unlo...
PlatformPC SDK Versionpyrealsense2-2.34.0.1470 Languagepython Issue Description In my application, I would like to minimize the lag as much as I can : I don't mind losing frames, but when I am ready to get frame, I want to get the most recent frame. ...
goFrame的队列gqueue对比channel使用实例分析 在Go语言中,channel 是一种非常强大的并发通信机制,常用于在多个goroutine之间传递数据。然而,在某些场景下...
Description Warning It is highly encouraged to read the specs prior to working on this implementation. As part of Strict Batch Ordering, the frame-queue must be modified with the following constraints: If a non-first frame (i.e., a frame...
用于存储解码后的音频或者视频数据。AVFrame必须通过av_frame_alloc进行分配,通过av_frame_free释放。 两者之间的关系 av_read_frame得到压缩的数据包AVPacket,一般有三种压缩的数据包(视频、音频和字幕),都用AVPacket表示。 然后调用avcodec_send_packet 和 avcodec_receive_frame对AVPacket进行解码得到AVFrame。
The invention provides a frame queue scheduling traffic shaping method and system. The method comprises the following steps: controlling a preset time interval for Ethernet switch chip outlet ends, scheduling the Ethernet switch chip outlet ends in a circular scheduling mode, selecting a current ...
按照Elder博士的总结，这11大易犯错误包括： 0.缺乏数据(LackData) 1.太关注训练(FocusonTraining) 2...