/// <summary>
/// 播放回调函数
/// </summary>
/// <param name="nPort"></param>
/// <param name="pBuf"></param>
/// <param name="nSize"></param>
/// <param name="pFrameInfo"></param>
/// <param name="nReserved1"></param>
/// <param name="nReserved2"></param>
private void pDecCBFun(int nPort, ref String pBuf,int nSize, ref FRAME_INFO pFrameInfo, int nReserved1, int nReserved2)
{
this.picPlayMain.Height = pFrameInfo.nHeight;
this.picPlayMain.Width = pFrameInfo.nWidth;
this.stlCurrentTime.Text = pFrameInfo.nStamp.ToString();
}
/// <summary>
/// 播放控制
/// </summary>
/// <param name="pPlayCom">
/// 播放命令:
/// 1.PLAY_COMMAND.GetPictureSize:获得帧原始图像大小
/// </param>
/// <param name="nPort">播放通道</param>
/// <param name="frameInfo">帧信息</param>
/// <returns>true:成功;false:失败</returns>
public static bool DHPlayControl(PLAY_COMMAND pPlayCom, int nPort, ref FRAME_INFO frameInfo)
{
bool returnValue = false;
switch (pPlayCom)
{
case PLAY_COMMAND.GetPictureSize:
returnValue = PLAY_GetPictureSize(nPort, ref frameInfo.nWidth, ref frameInfo.nHeight);
break;
}
DHThrowLastError(nPort);
return returnValue;
}
/// <summary>
/// 画面时钟处理
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void timerGetPlayInfo_Tick(object sender, EventArgs e)
{
if (pPlayVideoSizeMode != 9)
{
FRAME_INFO pFrameInfo = new FRAME_INFO();
uint totalFrames = DHPlay.DHPlayControl(PLAY_COMMAND.GetFileTotalFrames, 0, true);
DHPlay.DHPlayControl(PLAY_COMMAND.GetPictureSize, 0, ref pFrameInfo);
stlTotalFrames.Text = Convert.ToString(totalFrames);
trbPlayFrames.Maximum =(int) (totalFrames>0?totalFrames:0);
int pParentHeight;
int pParentWidth;
if (palMain.Visible)
{
pParentWidth = palMain.Width;
pParentHeight = palMain.Height;
}
else
{
pParentWidth = this.Width;
pParentHeight = this.Height;
}
switch (pPlayVideoSizeMode )
{
case 0://原始大小
picPlayMain.Width = pFrameInfo.nWidth;
picPlayMain.Height = pFrameInfo.nHeight;
picPlayMain.Top = (pParentHeight - picPlayMain.Height) / 2;
picPlayMain.Left = (pParentWidth - picPlayMain.Width) / 2;
break;
case 1://缩放
picPlayMain.Top = 0;
picPlayMain.Height = pParentHeight;
picPlayMain.Width = Convert.ToInt32( pFrameInfo.nWidth * ((float)pParentHeight / (float)pFrameInfo.nHeight));
picPlayMain.Left = (pParentWidth - picPlayMain.Width) / 2;
break;
}
}
SetPlayCurrentInfo(DHPlay.DHPlayControl(PLAY_COMMAND.GetCurrentFrameNum, 0, true), DHPlay.DHPlayControl(PLAY_COMMAND.GetPlayedTime, 0, true));
}
