PayloadAPP/Src/Video/ffmpegvideodlg.cpp

#include "ffmpegvideodlg.h"
#include "ui_ffmpegvideodlg.h"
#include <QMessageBox>

ffmpegvideoDlg::ffmpegvideoDlg(QWidget *parent)
    : QWidget(parent), ui(new Ui::ffmpegvideoDlg) {
  ui->setupUi(this);
  ffmpegPushStream = nullptr;
  pushStreamThread = nullptr;
}

ffmpegvideoDlg::~ffmpegvideoDlg() {
  stop();
  delete ui;
  if (ffmpegPushStream != nullptr)
    ffmpegPushStream->deleteLater();
  if (pushStreamThread != nullptr) {
    pushStreamThread->quit();
    pushStreamThread->wait();
    pushStreamThread->deleteLater();
  }
}

void ffmpegvideoDlg::setVedioSaveFileDirPath(QString saveDirPath) {
  videoSaveDirPath = saveDirPath;
}

void ffmpegvideoDlg::play(QString url) {
  if (!m_PlayStatus) {
    m_PlayStatus = true;
    ffmpeg = new Cffmpeg_decode;
    ffmpeg->setSaveFileDirPath(videoSaveDirPath);
    ffmpeg->IsstopPlay = false;
    if (!pushStreamIP.isEmpty()) // 推流
      startPushStream(m_PlayStatus);
    ffmpeg->moveToThread(&workerThread);

    connect(&workerThread, &QThread::finished, ffmpeg,
            &QObject::deleteLater); // 线程发送结束标志
    connect(this, &ffmpegvideoDlg::operate, ffmpeg,
            &Cffmpeg_decode::run); // 线程开始处理数据
    connect(this, &ffmpegvideoDlg::setUrlSign, ffmpeg,
            &Cffmpeg_decode::setUrl); // 设置URL
    connect(ffmpeg, SIGNAL(sendQImage(QImage)), this,
            SLOT(receiveQImage(QImage))); // 发送解析的图片
    connect(ffmpeg, SIGNAL(sendConnectFail(int)), this,
            SLOT(showMessagBox(int))); // 发送错误信息提示

    workerThread.start();
    emit this->setUrlSign(url); // 设置URL
    emit this->operate();       // 启用线程信号
  }
}

void ffmpegvideoDlg::stop() {
  if (m_PlayStatus) {
    ffmpeg->stop();
    m_PlayStatus = false;
    ffmpeg->IsstopPlay = true;   // 线程结束标志
    if (!pushStreamIP.isEmpty()) // 停止推流
      startPushStream(m_PlayStatus);
    workerThread.quit(); // 线程退出时自动delete线程里的类
    workerThread.wait();
    img.fill(Qt::black);
  }
}

// 绘图事件
void ffmpegvideoDlg::paintEvent(QPaintEvent *) {
  QPainter painter(this);
  painter.drawImage(m_ax, m_ay, img);
}

// 区域大小改变事件
void ffmpegvideoDlg::resizeEvent(QResizeEvent *event) {
  // 区域1920*1080自适应
  double VideoAreaHeight = this->height();
  double VideoAreaWidth = this->width();
  // 高度值相对比较大
  if (VideoAreaHeight * 16 > VideoAreaWidth * 9) {
    m_setVideoAreaWidth = VideoAreaWidth;
    m_setVideoAreaHeight = VideoAreaWidth * 9 / 16;
    m_ax = 0;
    m_ay = 0.5 * (VideoAreaHeight - m_setVideoAreaHeight);
  }
  // 宽度值相对比较大
  else {
    m_setVideoAreaHeight = VideoAreaHeight;
    m_setVideoAreaWidth = VideoAreaHeight * 16 / 9;
    m_ax = 0.5 * (VideoAreaWidth - m_setVideoAreaWidth);
    m_ay = 0;
  }
}

void ffmpegvideoDlg::receiveQImage(const QImage &rImg) {

  // img = rImg.scaled(this->size());
  QSize imgsize(m_setVideoAreaWidth, m_setVideoAreaHeight);
  img = rImg.scaled(imgsize);
  update();
}
// 显示不同提示消息
void ffmpegvideoDlg::showMessagBox(int type) {
  switch (type) {
  case 1:
    QMessageBox::information(NULL, tr("提示"), "获取视频失败", QMessageBox::Ok);
    break;
  default:
    break;
  }
}
bool ffmpegvideoDlg::Isplay(bool IsstopPlay) {
  return ffmpeg->IsstopPlay = IsstopPlay;
}

void ffmpegvideoDlg::startPushStream(bool bPush) {
  if (bPush) {
    if (ffmpegPushStream == nullptr) {
      ffmpegPushStream = new FFmpegPushStream;
      ffmpegPushStream->setRemoteIP(pushStreamIP); // 设置推流地址
    }

    if (pushStreamThread == nullptr) {
      pushStreamThread = new QThread;
      pushStreamThread->start();
      ffmpegPushStream->moveToThread(pushStreamThread);
    }
    connect(ffmpeg, &Cffmpeg_decode::sendInitPushStream_Signal,
            ffmpegPushStream, &FFmpegPushStream::openNetworkStream);
    connect(ffmpeg, &Cffmpeg_decode::sendStreamData_Signal, ffmpegPushStream,
            &FFmpegPushStream::pushStream);
    ffmpeg->bPushStreamFlag = true;
  } else {
    if (ffmpeg)
      ffmpeg->bPushStreamFlag = false;
  }
}

void ffmpegvideoDlg::setPushStreamIP(QString pushStreamURL) {
  pushStreamIP = pushStreamURL;
}