先来一张简单的效果图
以下几个VC++ 代码片段:
CPlayerDlg::OnInitDialog()
Hik_PlayM4_SetVolume(PORT,m_SoundSlider.GetPos());
//
其他代码
// set the capture picture call back function;
Hik_PlayM4_SetDisplayCallBack(PORT,DisplayCBFun);
// set the wave audio call back funtion;
Hik_PlayM4_SetAudioCallBack(PORT,WaveCBFun, ( long ) this );
// 其他代码
Hik_PlayM4_SetEncTypeChangeCallBack(PORT,funEncChange,( long ) this );
#if (WINVER > 0x0400)
// If do not support multi monitor,may not call!
Hik_PlayM4_InitDDrawDevice();
Hik_PlayM4_SetDDrawDevice(PORT, 0 );
#endif
// Test adapter Capability;
TestCapability( 0 );
Hik_PlayM4_SetFileEndMsg(PORT,m_hWnd,WM_FILE_END);
Hik_PlayM4_SetEncChangeMsg(PORT,m_hWnd,WM_ENC_CHANGE);
if (m_strPlayFileName.Compare( "" ))
{
if (m_bStreamType)
OpenStream();
else
OpenFile();
}
//
其他代码// set the capture picture call back function;
Hik_PlayM4_SetDisplayCallBack(PORT,DisplayCBFun);
// set the wave audio call back funtion;
Hik_PlayM4_SetAudioCallBack(PORT,WaveCBFun, ( long ) this );
//
其他代码
Hik_PlayM4_SetEncTypeChangeCallBack(PORT,funEncChange,( long ) this );
#if (WINVER > 0x0400)
// If do not support multi monitor,may not call!
Hik_PlayM4_InitDDrawDevice();
Hik_PlayM4_SetDDrawDevice(PORT, 0 );
#endif
// Test adapter Capability;
TestCapability( 0 );
Hik_PlayM4_SetFileEndMsg(PORT,m_hWnd,WM_FILE_END);
Hik_PlayM4_SetEncChangeMsg(PORT,m_hWnd,WM_ENC_CHANGE);
if (m_strPlayFileName.Compare( "" ))
{
if (m_bStreamType)
OpenStream();
else
OpenFile();
}
CPlayerDlg::OpenFile()
Hik_PlayM4_SetFileRefCallBack(PORT,FileRefDone,(DWORD)
this
);
Hik_PlayM4_SetVerifyCallBack(PORT, 0 , 0xffffffff , VerifyFun, (DWORD) this ); // verify the whole file;
if ( ! Hik_PlayM4_OpenFile(PORT,m_strPlayFileName.GetBuffer(m_strPlayFileName.GetLength())))
{
m_strPlayFileName = "" ;
CString csError;
csError.Format( " Open file failed(%d) " ,Hik_PlayM4_GetLastError(PORT));
MessageBox(csError);
return ;
}
SetOpenState();
m_nMaxFileTime = Hik_PlayM4_GetFileTime(PORT);
if ( ! m_nMaxFileTime)
{
MessageBox( " File seconds is zero " );
return ;
}
m_nTotalHour = m_nMaxFileTime / 3600 ;
m_nTotalMinute = (m_nMaxFileTime % 3600 ) / 60 ;
m_nTotalSecond = m_nMaxFileTime % 60 ;
m_nTotalFrames = Hik_PlayM4_GetFileTotalFrames(PORT);
numFrames = m_nTotalFrames;
// If you want to change the display buffer. Do hear!
// Hik_PlayM4_SetDisplayBuf(PORT,25);
Play();
Hik_PlayM4_SetVerifyCallBack(PORT, 0 , 0xffffffff , VerifyFun, (DWORD) this ); // verify the whole file;
if ( ! Hik_PlayM4_OpenFile(PORT,m_strPlayFileName.GetBuffer(m_strPlayFileName.GetLength())))
{
m_strPlayFileName = "" ;
CString csError;
csError.Format( " Open file failed(%d) " ,Hik_PlayM4_GetLastError(PORT));
MessageBox(csError);
return ;
}
SetOpenState();
m_nMaxFileTime = Hik_PlayM4_GetFileTime(PORT);
if ( ! m_nMaxFileTime)
{
MessageBox( " File seconds is zero " );
return ;
}
m_nTotalHour = m_nMaxFileTime / 3600 ;
m_nTotalMinute = (m_nMaxFileTime % 3600 ) / 60 ;
m_nTotalSecond = m_nMaxFileTime % 60 ;
m_nTotalFrames = Hik_PlayM4_GetFileTotalFrames(PORT);
numFrames = m_nTotalFrames;
// If you want to change the display buffer. Do hear!
// Hik_PlayM4_SetDisplayBuf(PORT,25);
Play();
CPlayerDlg::Play()
OnThrow0();
// #ifdef _TEST_CALLBACK
if (m_bConvert)
Hik_PlayM4_SetDecCallBack(PORT,DecCBFun);
else
m_pMainMenu -> EnableMenuItem(ID_FILE_CLOSE, FALSE);
// #endif
if (m_bPlaying)
{
Hik_PlayM4_Play(PORT,GetDlgItem(IDC_SHOW) -> m_hWnd);
}
else
{
if (m_bStreamType)
{
::SetFilePointer(m_hStreamFile,m_nHeadSize, 0 ,FILE_BEGIN);
Hik_PlayM4_ResetSourceBuffer(PORT);
SetEvent(m_hEventInput);
}
m_bPlaying = Hik_PlayM4_Play(PORT,GetDlgItem(IDC_SHOW) -> m_hWnd);
m_bSound = Hik_PlayM4_PlaySound(PORT);
if (m_bPlaying)
SetTimer(PLAY_TIMER, 500 ,NULL);
}
// #ifdef _TEST_CALLBACK
if (m_bConvert)
Hik_PlayM4_SetDecCallBack(PORT,DecCBFun);
else
m_pMainMenu -> EnableMenuItem(ID_FILE_CLOSE, FALSE);
// #endif
if (m_bPlaying)
{
Hik_PlayM4_Play(PORT,GetDlgItem(IDC_SHOW) -> m_hWnd);
}
else
{
if (m_bStreamType)
{
::SetFilePointer(m_hStreamFile,m_nHeadSize, 0 ,FILE_BEGIN);
Hik_PlayM4_ResetSourceBuffer(PORT);
SetEvent(m_hEventInput);
}
m_bPlaying = Hik_PlayM4_Play(PORT,GetDlgItem(IDC_SHOW) -> m_hWnd);
m_bSound = Hik_PlayM4_PlaySound(PORT);
if (m_bPlaying)
SetTimer(PLAY_TIMER, 500 ,NULL);
}
CPlayerDlg::SetOpenState()
Hik_PlayM4_GetPictureSize(PORT,
&
m_nWidth,
&
m_nHeight);
Hik_PlayM4_SetOverlayMode(PORT,TRUE,RGB( 255 , 0 , 255 ));
Hik_PlayM4_SetOverlayMode(PORT,TRUE,RGB( 255 , 0 , 255 ));
代码分析：
1. 从OnInitDialog部分代码可以看出主要是设置声音、判断是不是双击视频文件或者直接从流中读取数据。
2. OpenFile和SetOpenState是打开文件、设置画面大小、显示统计信息，如总帧数、视频总时间。
3. Play播放打开的视频文件。
4. 注意这里不讨论直接从流中读取数据并播放。
以下是非完全对应的C# Code:
//
uesed port;can be from 0 to 15;
int PORT = 0 ;
// 视频文件路径
private string m_strPlayFileName;
private void Form3_Load( object sender, EventArgs e)
{
// 设置音量
HikPlayer.Hik_PlayM4_SetVolume(PORT, 0xFFFF );
HikPlayer.Hik_PlayM4_SetFileEndMsg(PORT, pVideo.Handle, HikPlayer.WM_FILE_END);
HikPlayer.Hik_PlayM4_SetEncChangeMsg(PORT, pVideo.Handle, HikPlayer.WM_ENC_CHANGE);
}
/// <summary>
/// 打开文件并播放
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnPlay_Click( object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
m_strPlayFileName = openFileDialog1.FileName;
if ( ! string .IsNullOrEmpty(m_strPlayFileName))
{
OpenFile();
// 设置画面质量
HikPlayer.Hik_PlayM4_SetPicQuality(PORT, true );
}
else
MessageBox.Show( " 请选择文件！！ " );
}
}
private void OpenFile()
{
// 打开播放文件
HikPlayer.Hik_PlayM4_OpenFile(PORT, m_strPlayFileName);
Play();
}
public void SetOpenState()
{
// m_bOpen=TRUE;
int m_nWidth, m_nHeight;
// 获取原始图像的大小，可根据这个自动设置播放器大小
HikPlayer.Hik_PlayM4_GetPictureSize(PORT, out m_nWidth, out m_nHeight);
HikPlayer.Hik_PlayM4_SetOverlayMode(PORT, true , Color.FromArgb( 255 , 0 , 255 ).ToArgb());
}
private void Play()
{
// 开始播放
HikPlayer.Hik_PlayM4_Play(PORT, pVideo.Handle); // this.Handle);
// 播放声音
HikPlayer.Hik_PlayM4_PlaySound(PORT);
}
int PORT = 0 ;
// 视频文件路径
private string m_strPlayFileName;
private void Form3_Load( object sender, EventArgs e)
{
// 设置音量
HikPlayer.Hik_PlayM4_SetVolume(PORT, 0xFFFF );
HikPlayer.Hik_PlayM4_SetFileEndMsg(PORT, pVideo.Handle, HikPlayer.WM_FILE_END);
HikPlayer.Hik_PlayM4_SetEncChangeMsg(PORT, pVideo.Handle, HikPlayer.WM_ENC_CHANGE);
}
/// <summary>
/// 打开文件并播放
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnPlay_Click( object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
m_strPlayFileName = openFileDialog1.FileName;
if ( ! string .IsNullOrEmpty(m_strPlayFileName))
{
OpenFile();
// 设置画面质量
HikPlayer.Hik_PlayM4_SetPicQuality(PORT, true );
}
else
MessageBox.Show( " 请选择文件！！ " );
}
}
private void OpenFile()
{
// 打开播放文件
HikPlayer.Hik_PlayM4_OpenFile(PORT, m_strPlayFileName);
Play();
}
public void SetOpenState()
{
// m_bOpen=TRUE;
int m_nWidth, m_nHeight;
// 获取原始图像的大小，可根据这个自动设置播放器大小
HikPlayer.Hik_PlayM4_GetPictureSize(PORT, out m_nWidth, out m_nHeight);
HikPlayer.Hik_PlayM4_SetOverlayMode(PORT, true , Color.FromArgb( 255 , 0 , 255 ).ToArgb());
}
private void Play()
{
// 开始播放
HikPlayer.Hik_PlayM4_Play(PORT, pVideo.Handle); // this.Handle);
// 播放声音
HikPlayer.Hik_PlayM4_PlaySound(PORT);
}
代码说明:
1. 相对于VC++例子，这里省略了许多代码，比如空委托、显示统计信息等。
2. 如果文件打开出错，有可能是前面视频录像文件有问题，你可以先用自带的播放器试一下。
3. 建议补充错误处理。
本文转自博客园农民伯伯的博客，原文链接：C# 视频监控系列（12）：H264播放器——播放录像文件，如需转载请自行联系原博主。
