vlc二次开发，mfc窗口，调用libvlc，播放海康rtsp流，出现了两个窗口，一个mfc dialog窗口，一个vlc direct3d 11 output窗口，视频就显示了最初一帧，就停了。请大家解决。
代码如下：
#pragma once
# ifdef __cplusplus
extern "C" {
# endif
void cfgvlc(int winid);
void play();
# ifdef __cplusplus
}
# endif
```c++
typedef int ssize_t;
#include "vlc/vlc.h"
libvlc_instance_t* _vlcinstance;
libvlc_media_player_t* _mp;
libvlc_media_t* _m;
void cfgvlc(int winid)
{
const char* const vlc_args[] = {
"--verbose=2", //be much more verbose then normal for debugging purpose
"--network-caching=100",
};
//create a new libvlc instance
_vlcinstance= libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args); //tricky calculation of the char space used
// Create a media player playing environement
_mp = libvlc_media_player_new(_vlcinstance);
///* Create a new LibVLC media descriptor */
_m = libvlc_media_new_location(_vlcinstance, "rtsp://admin:a8628391@192.168.1.64:554/h265/ch1/main/av_stream");
libvlc_media_player_set_media(_mp, _m);
///* Get our media instance to use our window */
//int windid = (int)GetDlgItem(IDC_STATIC_VLC)->m_hWnd;//ui->frame->winId();
libvlc_media_player_set_xwindow(_mp, winid);
///* Play */
libvlc_media_player_play(_mp);
return;
}
void play()
{
libvlc_media_player_play(_mp);
}
```c++
// MFCvlcDlg.h: 头文件
//
#pragma once
//#include "vlc/vlc.h"
// CMFCvlcDlg 对话框
class CMFCvlcDlg : public CDialogEx
{
// 构造
public:
CMFCvlcDlg(CWnd* pParent = nullptr); // 标准构造函数
// 对话框数据
#ifdef AFX_DESIGN_TIME
enum { IDD = IDD_MFCVLC_DIALOG };
#endif
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持
public:
// 实现
protected:
HICON m_hIcon;
// 生成的消息映射函数
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
afx_msg void OnTimer(UINT_PTR nIDEvent);
DECLARE_MESSAGE_MAP()
};
```c++
// MFCvlcDlg.cpp: 实现文件
//
//#include "vlc/vlc.h"
#include "pch.h"
#include "framework.h"
#include "MFCvlc.h"
#include "MFCvlcDlg.h"
#include "afxdialogex.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
//#undef WIN32_LEAN_AND_MEAN
#include "myvlc.h"
#define TIMERID 8
// 用于应用程序“关于”菜单项的 CAboutDlg 对话框
class CAboutDlg : public CDialogEx
{
public:
CAboutDlg();
// 对话框数据
#ifdef AFX_DESIGN_TIME
enum { IDD = IDD_ABOUTBOX };
#endif
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持
// 实现
protected:
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialogEx(IDD_ABOUTBOX)
{
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()
// CMFCvlcDlg 对话框
CMFCvlcDlg::CMFCvlcDlg(CWnd* pParent /*=nullptr*/)
: CDialogEx(IDD_MFCVLC_DIALOG, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CMFCvlcDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CMFCvlcDlg, CDialogEx)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_TIMER()
END_MESSAGE_MAP()
// CMFCvlcDlg 消息处理程序
BOOL CMFCvlcDlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
// 将“关于...”菜单项添加到系统菜单中。
// IDM_ABOUTBOX 必须在系统命令范围内。
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != nullptr)
{
BOOL bNameValid;
CString strAboutMenu;
bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
ASSERT(bNameValid);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// 设置此对话框的图标。 当应用程序主窗口不是对话框时，框架将自动
// 执行此操作
SetIcon(m_hIcon, TRUE); // 设置大图标
SetIcon(m_hIcon, FALSE); // 设置小图标
// TODO: 在此添加额外的初始化代码
//libvlc_instance_t* _vlcinstance;
//libvlc_media_player_t* _mp;
//libvlc_media_t* _m;
const char* const vlc_args[] = {
// "--verbose=2", //be much more verbose then normal for debugging purpose
"--network-caching=100",
};
//create a new libvlc instance
///*_vlcinstance*/ libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args); //tricky calculation of the char space used
// Create a media player playing environement
//_mp = (void *)libvlc_media_player_new(_vlcinstance);
///* Create a new LibVLC media descriptor */
//_m = (void*)libvlc_media_new_location(_vlcinstance, "rtsp://admin:a8628391@192.168.1.64:554/h265/ch1/main/av_stream");
//libvlc_media_player_set_media(_mp, _m);
///* Get our media instance to use our window */
//int windid = (int)GetDlgItem(IDC_STATIC_VLC)->m_hWnd;//ui->frame->winId();
//libvlc_media_player_set_xwindow(_mp, windid);
///* Play */
//libvlc_media_player_play(_mp);
cfgvlc((int)GetDlgItem(IDC_STATIC_VLC)->m_hWnd);
SetTimer(TIMERID, 1, 0);
return TRUE; // 除非将焦点设置到控件，否则返回 TRUE
}
void CMFCvlcDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialogEx::OnSysCommand(nID, lParam);
}
}
// 如果向对话框添加最小化按钮，则需要下面的代码
// 来绘制该图标。 对于使用文档/视图模型的 MFC 应用程序，
// 这将由框架自动完成。
void CMFCvlcDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // 用于绘制的设备上下文
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
// 使图标在工作区矩形中居中
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// 绘制图标
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialogEx::OnPaint();
}
}
//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CMFCvlcDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
void CMFCvlcDlg::OnTimer(UINT_PTR nIDEvent)
{
play();
}
```
