1 line
12 KiB
C++
1 line
12 KiB
C++
#include "VideoEngine.h"
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using namespace ai_matrix;
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namespace
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{
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const int LOW_THRESHOLD = 128;
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const int MAX_THRESHOLD = 4096;
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const uint16_t DELAY_TIME = 10000;
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}
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VideoEngine::VideoEngine() {}
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VideoEngine::~VideoEngine() {}
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APP_ERROR VideoEngine::Init()
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{
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std::vector<DataSourceConfig> vecDataSourceConfig = Config::getins()->getAllDataSourceConfig();
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if (vecDataSourceConfig.size() <= this->engineId_)
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{
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LogWarn << " -- " << engineName_ << "_" << engineId_ << " dataSource no set, Engine DeInit";
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return APP_ERR_OK;
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}
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dataSourceConfig_ = vecDataSourceConfig.at(engineId_);
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strPort0_ = engineName_ + "_" + std::to_string(engineId_) + "_0";
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strPort1_ = engineName_ + "_" + std::to_string(engineId_) + "_1";
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LogInfo << "engineId_:" << engineId_ << " VideoEngine Init ok";
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return APP_ERR_OK;
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}
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APP_ERROR VideoEngine::DeInit()
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{
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ResetCamera();
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LogInfo << "engineId_:" << engineId_ << " VideoEngine DeInit ok";
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return APP_ERR_OK;
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}
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void VideoEngine::ResetCamera()
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{
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if (pFormatCtx_ != nullptr)
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{
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// clear th cache of the queue
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avformat_close_input(&pFormatCtx_);
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pFormatCtx_ = nullptr;
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}
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}
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APP_ERROR VideoEngine::ConnectCamera()
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{
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pFormatCtx_ = CreateFormatContext(); // create context
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if (pFormatCtx_ == nullptr)
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{
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LogError << "engineId_:" << engineId_ << " pFormatCtx_ null!";
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return APP_ERR_COMM_FAILURE;
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}
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//0-代表输入
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av_dump_format(pFormatCtx_, 0, dataSourceConfig_.strUrl.c_str(), 0);
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// get stream infomation
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int iRet = APP_ERR_OK;
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iRet = GetStreamInfo();
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if (iRet != APP_ERR_OK)
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{
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LogError << "engineId_:" << engineId_ << " Stream Info Check failed, iRet = " << iRet;
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return APP_ERR_COMM_FAILURE;
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}
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return APP_ERR_OK;
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}
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APP_ERROR VideoEngine::GetStreamInfo()
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{
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if (pFormatCtx_ != nullptr)
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{
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iVideoStream_ = -1;
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iAudioStream_ = -1;
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//frameInfo_.iFrameId = 0; //帧号从0开始
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for (unsigned int i = 0; i < pFormatCtx_->nb_streams; i++)
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{
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AVStream *inStream = pFormatCtx_->streams[i];
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if (inStream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
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{
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iVideoStream_ = i;
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frameInfo_.iHeight = inStream->codecpar->height;
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frameInfo_.iWidth = inStream->codecpar->width;
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//获取帧率,帧率的打印都在流中的两个成员.且应取平均帧率为先,为{x,0}或者{0,1}则取实时帧率
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if (inStream->avg_frame_rate.den == 0 || (inStream->avg_frame_rate.num == 0 && inStream->avg_frame_rate.den == 1))
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{
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frameInfo_.iRate = inStream->r_frame_rate.num / inStream->r_frame_rate.den;
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}
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else
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{
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frameInfo_.iRate = inStream->avg_frame_rate.num / inStream->avg_frame_rate.den;
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}
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frameInfo_.iRate = frameInfo_.iRate == 0 ? 25 : frameInfo_.iRate;
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LogDebug << "engineId_:" << engineId_ << " width:" << frameInfo_.iWidth << " height:" << frameInfo_.iHeight
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<< " rate:" << frameInfo_.iRate << " iVideoStream_:" << iVideoStream_;
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}
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// else if (inStream->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
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// {
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// iAudioStream_ = i;
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// LogDebug << "engineId_:" << engineId_ << " iAudioStream_:" << iAudioStream_;
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// }
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}
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if (iVideoStream_ == -1)
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{
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LogError << "engineId_:" << engineId_ << " Didn't find a video stream!";
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return APP_ERR_COMM_FAILURE;
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}
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if (frameInfo_.iHeight < LOW_THRESHOLD || frameInfo_.iWidth < LOW_THRESHOLD ||
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frameInfo_.iHeight > MAX_THRESHOLD || frameInfo_.iWidth > MAX_THRESHOLD)
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{
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LogError << "engineId_:" << engineId_ << " Size of frame is not supported in DVPP Video Decode!";
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return APP_ERR_COMM_FAILURE;
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}
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pCodecParameters_ = pFormatCtx_->streams[iVideoStream_]->codecpar;
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}
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return APP_ERR_OK;
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}
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AVFormatContext *VideoEngine::CreateFormatContext()
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{
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// create message for stream pull
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AVFormatContext *pFormatContext = nullptr;
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AVDictionary *pOptions = nullptr;
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// formatContext = avformat_alloc_context();
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if (dataSourceConfig_.strUrl.find("rtsp:") != std::string::npos) // rtsp
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{
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//设置缓存大小,1080p可将值调大
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av_dict_set(&pOptions, "buffer_size", "8192000", 0);
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//以tcp方式打开,如果以udp方式打开将tcp替换为udp
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av_dict_set(&pOptions, "rtsp_transport", "tcp", 0);
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//设置超时断开连接时间,单位微秒,3000000表示3秒
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av_dict_set(&pOptions, "stimeout", "3000000", 0);
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//设置最大时延,单位微秒,1000000表示1秒
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av_dict_set(&pOptions, "max_delay", "1000000", 0);
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//自动开启线程数
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av_dict_set(&pOptions, "threads", "auto", 0);
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}
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//av_register_all(); //注册所有支持的格式(这里一定注册这些，否则会因为协议解析问题报错!!!)
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//avcodec_register_all(); //注册编解码器
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//avformat_network_init(); //注册网格格式，如果为本地文件则可以去掉该代码
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int iRet = avformat_open_input(&pFormatContext, dataSourceConfig_.strUrl.c_str(), nullptr, &pOptions);
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if (nullptr != pOptions)
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{
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av_dict_free(&pOptions);
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}
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if (iRet != 0)
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{
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LogError << "engineId_:" << engineId_ << " Couldn't open input stream " << dataSourceConfig_.strUrl.c_str() << ", iRet=" << iRet;
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return nullptr;
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}
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// pFormatContext->flags |= AVFMT_FLAG_NONBLOCK;
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// pFormatContext->pb->flags |= AVIO_FLAG_NONBLOCK;
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// av_dict_set(&pFormatContext->interrupt_callback.callback, "timeout", "3000", 0);
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// iRet = avio_open2(&pFormatContext->pb, dataSourceConfig_.strUrl.c_str(), AVIO_FLAG_READ, NULL, NULL) < 0;
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// {
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// // 处理错误
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// LogError << "engineId_:" << engineId_ << "avio_open2 iRet=" << iRet;
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// return nullptr;
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// }
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iRet = avformat_find_stream_info(pFormatContext, nullptr);
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if (iRet != 0)
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{
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LogError << "engineId_:" << engineId_ << " Couldn't find stream information, iRet = " << iRet;
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return nullptr;
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}
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return pFormatContext;
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}
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//av_read_frame的中断回调函数
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// int VideoEngine::InterruptCallback(void *pData)
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// {
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// TimeoutContext* pTimeOutCtx = (TimeoutContext*)pData;
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// LogDebug << "InterruptCallback i64Timeout:" << pTimeOutCtx->i64Timeout;
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// return std::chrono::duration_cast<std::chrono::milliseconds>(
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// std::chrono::system_clock::now().time_since_epoch())
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// .count() >= pTimeOutCtx->i64Timeout
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// ? AVERROR_EXIT
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// : 0;
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// }
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APP_ERROR VideoEngine::Process()
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{
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int iRet = APP_ERR_OK;
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// Pull data cyclically
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AVPacket pkt;
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while (!isStop_)
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{
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//重连相机
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if (bConnectFlag_)
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{
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iRet = ConnectCamera();
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if (iRet == APP_ERR_OK)
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{
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LogInfo << "engineId_:" << engineId_ << " Start the stream......";
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bConnectFlag_ = false;
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}
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else
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{
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// outputQueMap_[strPort1_]->push(std::static_pointer_cast<void>(std::make_shared<std::string>("摄像头连接失败！")));
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ResetCamera();
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bConnectFlag_ = true;
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std::this_thread::sleep_for(std::chrono::seconds(3)); //3秒后重连
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continue;
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}
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}
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//设置av_read_frame中断函数 (中断函数中超过1s，则中断处理)
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// TimeoutContext timeoutCtx = { std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count() + 1000 };
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// pFormatCtx_->interrupt_callback.callback = &VideoEngine::InterruptCallback;
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// pFormatCtx_->interrupt_callback.opaque = &timeoutCtx;
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av_init_packet(&pkt); //init pkt
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iRet = av_read_frame(pFormatCtx_, &pkt); //需要一直读取，否则获取到的是历史数据
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if (iRet != 0)
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{
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av_packet_unref(&pkt);
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if (dataSourceConfig_.strUrl.find("rtsp:") != std::string::npos)
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{
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LogError << "engineId_:" << engineId_ << " Read frame failed, reconnect iRet:" << iRet;
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//重连相机
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ResetCamera();
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bConnectFlag_ = true;
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}
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else
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{
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// LogWarn << "----- 视频播放完毕 -----";
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// //重连相机
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// ResetCamera();
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// bConnectFlag_ = true;
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std::this_thread::sleep_for(std::chrono::seconds(3)); //3秒
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};
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//组织数据
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std::shared_ptr<ProcessData> pProcessData = std::make_shared<ProcessData>();
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pProcessData->iDataSource = this->engineId_;
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pProcessData->sourceFrameData.i64TimeStamp = TimeUtil::getins()->getCurrentTimeMillis(true);
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pProcessData->bIsEnd = true;
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//push端口0，视频解码
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iRet = outputQueMap_[strPort0_]->push(std::static_pointer_cast<void>(pProcessData), true);
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if (iRet != APP_ERR_OK)
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{
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LogError << "数据推动失败，解码引擎关闭...";
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}
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continue;
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}
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if (pkt.stream_index == iVideoStream_) //只解码视频流
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{
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// LogDebug << "iRet:" << iRet << " pkt.size:" << pkt.size;
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if (pkt.size <= 0)
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{
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LogError << "engineId_:" << engineId_ << " Invalid pkt.size: " << pkt.size;
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av_packet_unref(&pkt);
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continue;
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}
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if (dataSourceConfig_.strUrl.find(".mp4") != std::string::npos)
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{
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const char szStartCode[4] = {0, 0, 0, 1};
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if (bIsAvc_ || memcmp(szStartCode, pkt.data, 4) != 0)
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{ // is avc1 code, have no start code of H264
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int iLen = 0;
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uint8_t *p = pkt.data;
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bIsAvc_ = true;
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do
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{ // add start_code for each NAL, one frame may have multi NALs.
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iLen = ntohl(*((long *)p));
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memcpy(p, szStartCode, 4);
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p += 4;
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p += iLen;
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if (p >= pkt.data + pkt.size)
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{
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break;
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}
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} while (true);
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}
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}
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void* pH264Buffer = nullptr;
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pH264Buffer = new uint8_t[pkt.size];
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memcpy(pH264Buffer, pkt.data, pkt.size);
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//组织数据
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std::shared_ptr<ProcessData> pProcessData = std::make_shared<ProcessData>();
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pProcessData->iDataSource = this->engineId_;
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pProcessData->pCodecParameters_ = this->pCodecParameters_;
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pProcessData->dataSourceInfo = frameInfo_;
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pProcessData->sourceFrameData.i64TimeStamp = TimeUtil::getins()->getCurrentTimeMillis(true);
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pProcessData->sourceFrameData.iSize = pkt.size;
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pProcessData->sourceFrameData.pData.reset(pH264Buffer, [](void* data){if(data) {delete[] data; data = nullptr;}}); //智能指针管理内存
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//push端口0，视频解码
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iRet = outputQueMap_[strPort0_]->push(std::static_pointer_cast<void>(pProcessData), true);
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if (iRet != APP_ERR_OK)
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{
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LogError << "数据推动失败，解码引擎关闭...";
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}
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}
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else
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{
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// LogError << "engineId_:" << engineId_ << " stream err stream_index:" << pkt.stream_index;
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}
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av_packet_unref(&pkt); //unref
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if (dataSourceConfig_.strUrl.find("rtsp:") == std::string::npos) // 如果不是rtsp，定时发送
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(1000 / frameInfo_.iRate));
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if (this->isStop_) return APP_ERR_OK;
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}
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}
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return APP_ERR_OK;
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}
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