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qtmplayer
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modify mplayerInit

This commit is contained in:
flykhan 2023-08-30 16:19:45 +08:00
parent e8b4b46109
commit de0c8b8383
1 changed files with 12 additions and 10 deletions
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18
mainwindow.cpp
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@ -43,11 +43,11 @@ void MainWindow::initMainWindow()
ui->volume_slider->setMaximum(100); // 最大音量 100 ui->volume_slider->setMaximum(100); // 最大音量 100
// 当前音量从 mplayer 属性获取 // 当前音量从 mplayer 属性获取
// QSlider* slider = new QSlider(Qt::Horizontal); // QSlider* slider = new QSlider(Qt::Horizontal);
// slider->setMinimum(0); // 设置最小值 // slider->setMinimum(0); // 设置最小值
// slider->setMaximum(100); // 设置最大值 // slider->setMaximum(100); // 设置最大值
// slider->setValue(50); // 设置当前值 // slider->setValue(50); // 设置当前值
// slider->setSingleStep(1); // 设置步长 // slider->setSingleStep(1); // 设置步长
} }
@ -67,17 +67,19 @@ void MainWindow::mplayerInit()
// 重定向标准输出 // 重定向标准输出
dup2(fd[1],1); dup2(fd[1],1);
// 使用 exec 启动 mplayer // 使用 exec 启动 mplayer
execlp("mplayer","mplayer","-idle","-slave","-quiet","-input","file=fifo_cmd","./song/01.mp3",NULL); // execlp("mplayer","mplayer","-idle","-slave","-quiet","/home/flykhan/qtmplayer/song/StopLove.mp3",NULL);
execlp("mplayer","mplayer","-idle","-slave","-quiet","-input","file=fifo_cmd","/home/flykhan/qtmplayer/song/StopLove.mp3",NULL);
_exit(-1); // 异常退出 _exit(-1); // 异常退出
} }
else if(pid>0) // 父进程 else if(pid>0) // 父进程
{ {
// 打开管道 // 打开管道
// 以写的方式打开(阻塞到某进程 以读的方式打开) // 以写的方式打开(阻塞到某进程 以读的方式打开)
fifo_fd = open("fifo_cmd",O_WRONLY); int fifo_fd = open("fifo_cmd",O_WRONLY);
if(fifo_fd < 0){ if(fifo_fd < 0){
perror("open"); perror("open");
return 0; // return 0;
_exit(-1);
} }
} }
} }