测试C#调用Aplayer播放视频（3：编写简易播放器）-CSDN博客

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阿里云国际，腾讯云国际，低至75折。AWS 93折免费开户实名账号代冲值优惠多多微信号：monov8 飞机：@monov6

学习了参考文献1中的示例代码也找出了前一篇文章中自己测试控件但无法播放视频的问题没有将解码库文件复制到可执行程序所在的codecs文件夹内本文基于APlayer组件编写简单的视频播放器主要实现以下功能

序号	功能	说明
1	自定义logo	调用SetCustomLogo函数设置未播放视频时的显示图片图片来自参考文献2
2	打开文件	调用Open函数打开并播放视频文件
3	定时刷新播放信息	参照参考文献1中的demo使用定时器定时刷新当前播放进度调用GetDuration获取视频总时长调用GetPosition获取当前播放时间同时在OnOpenSucceeded中启动定时器在OnStateChanged事件中停止定时器
4	暂停/播放/停止	调用Pause/Play/Close函数暂停/播放/停止视频
5	设置音量	调用SetVolume设置音量尽在0-100范围内调节音量并未使用APlayer的10倍放大
6	拖拽时间条	调用SetPosition函数在Trackbar的Scroll事件中重新设置播放时间
7	快进/快退	调用SetPosition函数快进/快退10秒

最后是程序界面、播放视频截图及主要代码
在这里插入图片描述

public Form1()
{
   this.axPlayer1.SetCustomLogo(((Bitmap)Bitmap.FromFile("gundam.jpg")).GetHbitmap().ToInt32());
   axPlayer1.OnOpenSucceeded += new EventHandler(OnOpenSucceeded);
   axPlayer1.OnStateChanged += new _IPlayerEvents_OnStateChangedEventHandler(OnStateChanged);
}

string TimeToString(TimeSpan span)
{
   return span.Hours.ToString("00") + ":" +
   span.Minutes.ToString("00") + ":" +
   span.Seconds.ToString("00");
}

void OnOpenSucceeded(object sender, EventArgs e)
{
   lblProgress.Text= "00:00:00/"+TimeToString(TimeSpan.FromMilliseconds(axPlayer1.GetDuration()));            
   tbTimeline.Maximum = axPlayer1.GetDuration();
   timer1.Start();
}

private void UpdatePlayInfo(object sender, EventArgs e)
{
   lblProgress.Text = TimeToString(TimeSpan.FromMilliseconds(axPlayer1.GetPosition()))+"/" + TimeToString(TimeSpan.FromMilliseconds(axPlayer1.GetDuration()));
   tbTimeline.Value = axPlayer1.GetPosition() < 0 ? 0 : axPlayer1.GetPosition();
}

private void tbVolumn_ValueChanged(object sender, EventArgs e)
{
   axPlayer1.SetVolume(tbVolumn.Value);
}

private void btnForward_Click(object sender, EventArgs e)
{
   axPlayer1.SetPosition(axPlayer1.GetPosition() + 10000);
}

private void btnBack_Click(object sender, EventArgs e)
{
   int timeLine = axPlayer1.GetPosition() - 10000;
   axPlayer1.SetPosition(timeLine < 0 ? 0 : timeLine);
}

private void btnClose_Click(object sender, EventArgs e)
{
   axPlayer1.Close();
}

private void btnPlay_Click(object sender, EventArgs e)
{
   axPlayer1.Play();
}

private void btnPause_Click(object sender, EventArgs e)
{
   axPlayer1.Pause();
}

void OnStateChanged(object sender, _IPlayerEvents_OnStateChangedEvent e)
{
   switch (e.nNewState)
   {
       case 0:
           tbTimeline.Value = 0;
           lblProgress.Text = "00:00:00/00:00:00" ;   
           timer1.Stop();
           break;                
   }
}

private void btnOpen_Click(object sender, EventArgs e)
{
   using (OpenFileDialog ofd = new OpenFileDialog())
   {
       ofd.Filter = "mp4|*.mp4|avi|*.avi|rm|*.rm|rmvb|*.rmvb|flv|*.flv|xr|*.xr|所有文件|*.*";
       ofd.Multiselect = false;
       if (ofd.ShowDialog() == DialogResult.OK)
       {
           axPlayer1.Open(ofd.FileName);
       }
   }
}

private void tbTimeline_Scroll(object sender, EventArgs e)
{
   axPlayer1.SetPosition(tbTimeline.Value);
   lblProgress.Text = TimeToString(TimeSpan.FromMilliseconds(axPlayer1.GetPosition())) + "/" + TimeToString(TimeSpan.FromMilliseconds(axPlayer1.GetDuration()));
}