RecordScreen.cpp

#include "RecordScreen.h"

#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include <QBuffer>
#include <QByteArray>
#include <QDial>
#include <QMessageBox>
#include <QPixmap>
#include <QScreen>
#include <QWidget>

#include <QGuiApplication>

RecordScreen::RecordScreen() { isStopRecord = false; }

RecordScreen::~RecordScreen() {}

void RecordScreen::run() { recordScreen(); }

// ffmpeg -threads 2 -y -r 30 -i %04d.jpg   ./output.mp4
void RecordScreen::recordScreen() {
        FILE *file = NULL;
        int fifo_fd;

        if (access(FIFO_NAME, F_OK) == -1) {
                fifo_fd = mkfifo(FIFO_NAME, 0777);
                if (fifo_fd < 0) {
                }
        }

        QScreen *screen = QGuiApplication::primaryScreen();

        while (!isStoped()) {
                QPixmap pix = screen->grabWindow(0);

                QByteArray ba;
                QBuffer buf(&ba);
                pix.save(&buf, "jpg");

                fifo_fd = open(FIFO_NAME, O_WRONLY);
                //                size_t num =write(fifo_fd, ba, ba.size());
                size_t num = write(fifo_fd, ba, ba.size());
                if (num == -1) {
                }

                usleep(40 * 1000);
        }

        ::close(fifo_fd);
}

void RecordScreen::stopRecord() { isStopRecord = true; }

bool RecordScreen::isStoped() { return isStopRecord; }