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DXGI高帧率屏幕录像软件源码解析（声音捕获，抓屏，ffmpeg录像，MP4录像，flv录像，麦克风采集）（第1篇API展示及使用部分）_pydxgi

作者：小小林熬夜学编程 | 2024-04-15 20:59:03

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pydxgi

本文DEMO源码下载：

(91条消息) dxgi桌面屏幕录像（windows屏幕录像，硬件编码，声音捕获，音视频同步）-编解码文档类资源-CSDN文库icon-default.png?t=M276https://download.csdn.net/download/xjb2006/85109025

由于篇幅有限，分为4篇发表：

1、SDK接口一览：

2、声音采集部分:

3、屏幕捕获部分：

4、编码，录像部分：

距离上篇文章已经过了快1年了，才有时间把正式DEMO传上来，直接上个截图看看吧：

该DEMO演示了win10屏幕录像的核心功能，包含音源选择（支持麦克风，计算机声音和2者混合），屏幕选择（主副屏选择），鼠标，帧率，码率，硬件编码，实时预览，双录制（同时录制为flv,mp4）等基本功能。为了扩展需要，程序核心模块做成DLL动态库，可以多语言扩展，适用于C++，C#，JAVA，VB，Python等等其他语言。

SDK接口展示：

为方便其他语言和开发复用，将核心部件封装成了DLL：

xDxgiScreen.dll：负责屏幕采集

xScreenRecord.dll：负责音频采集，声音合成，音视频编码，音视频合成录像等

API一览：

  1. typedef void (*pUserKey)(char* szUser,char* szKey);
  2. typedef int (*pStartSendScreen)();
  3. typedef void (*pStopSendScreen)();
  4. typedef void (*pSetEncoderName)(char* name);//指定编码器
  5. typedef void (*pSetEncoder)(int bps,double fps,int gop);
  6. typedef void (*pSetIP)(char* szIP);
  7. typedef int (*pGetCapMod)();
  8. typedef int (*pGetEncoderID)();
  9. typedef void(*pSetHaveCursor) (int nHave);
  10. typedef void(*pSetMonitor) (int nMonitor);
  11. typedef void(*pSetCapAudioType) (int nCapAudioType);
  12. typedef void(*pSetVideoProperty)(int bps,int fps,int gop);
  13. typedef void(*pStartRecord)(char *szMp4,char *szFlv);
  14. typedef void(*pStopRecord)();
  15. typedef int (*pOpenDxgi)();
  16. typedef void(*pStartPreview)(int hWnd);
  17. typedef void(*pStopPreview)();
  18. typedef void(*pCloseAll)();
  19. typedef bool(*pIsRecording)();
  20. typedef int(*pGetMonitorCount)();
  21. typedef int(*pGetMonitorWidth)(int nMonitorIndex);
  22. typedef int(*pGetMonitorHeight)(int nMonitorIndex);
  23.  
  24.  
  25. typedef struct tagScreenShareDll
  26. {
  27. 	pUserKey UserKey;
  28. 	pStartSendScreen StartSendScreen;
  29. 	pStopSendScreen  StopSendScreen;
  30. 	pSetEncoderName SetEncoderName;
  31. 	pSetEncoder SetEncoder;
  32. 	pSetIP SetIP;
  33. 	pGetCapMod GetCapMod;
  34. 	pGetEncoderID GetEncoderID;
  35. 	pSetHaveCursor SetHaveCursor;
  36. 	pSetMonitor SetMonitor;
  37. 	pSetCapAudioType SetCapAudioType;
  38. 	pSetVideoProperty SetVideoProperty;
  39. 	pStartRecord StartRecord;
  40. 	pStopRecord StopRecord;
  41. 	pOpenDxgi OpenDxgi;
  42. 	pStartPreview StartPreview;
  43. 	pStopPreview StopPreview;
  44. 	pCloseAll CloseAll;
  45. 	pIsRecording IsRecording;
  46. 	pGetMonitorCount GetMonitorCount;
  47. 	pGetMonitorWidth GetMonitorWidth;
  48. 	pGetMonitorHeight GetMonitorHeight;
  49.  
  50. }SCREENSHAREDLL;

C++调用示例：

  1. BOOL CScreenShareDlg::LoadScreenShareDll()
  2. {
  3. 	CString szDll=GetExeFilePath()+L"xScreenRecord.dll";
  4. 	//HINSTANCE hDLL = LoadLibrary(szDll);
  5. 	HINSTANCE hDLL = LoadLibraryEx(szDll, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
  6. 	if(hDLL==0)
  7. 	{
  8. 		MessageBox(L"xScreenRecord.dll加载失败!");
  9. 		return false;
  10. 	}
  11. 	else
  12. 	{		
  13. 		m_screenrecord.UserKey= (pUserKey)GetProcAddress(hDLL, "UserKey");
  14. 		m_screenrecord.StartSendScreen = (pStartSendScreen)GetProcAddress(hDLL, "StartSendScreen");
  15. 		m_screenrecord.StopSendScreen = (pStopSendScreen)GetProcAddress(hDLL, "StopSendScreen");
  16. 		m_screenrecord.SetIP = (pSetIP)GetProcAddress(hDLL, "SetIP");
  17. 		m_screenrecord.SetEncoder = (pSetEncoder)GetProcAddress(hDLL, "SetEncoder");
  18. 		m_screenrecord.GetCapMod = (pGetCapMod)GetProcAddress(hDLL, "GetCapMod");
  19. 		m_screenrecord.GetEncoderID = (pGetEncoderID)GetProcAddress(hDLL, "GetEncoderID");
  20. 		m_screenrecord.SetHaveCursor = (pSetHaveCursor)GetProcAddress(hDLL, "SetHaveCursor");
  21. 		m_screenrecord.SetMonitor = (pSetMonitor)GetProcAddress(hDLL, "SetMonitor");
  22. 		m_screenrecord.SetCapAudioType = (pSetCapAudioType)GetProcAddress(hDLL, "SetCapAudioType");
  23. 		m_screenrecord.SetVideoProperty = (pSetVideoProperty)GetProcAddress(hDLL, "SetVideoProperty");
  24. 		m_screenrecord.StartRecord = (pStartRecord)GetProcAddress(hDLL, "StartRecord");
  25. 		m_screenrecord.StopRecord = (pStopRecord)GetProcAddress(hDLL, "StopRecord");
  26. 		m_screenrecord.OpenDxgi = (pOpenDxgi)GetProcAddress(hDLL, "OpenDxgi");
  27. 		m_screenrecord.StartPreview = (pStartPreview)GetProcAddress(hDLL, "StartPreview");
  28. 		m_screenrecord.StopPreview = (pStopPreview)GetProcAddress(hDLL, "StopPreview");
  29. 		m_screenrecord.CloseAll = (pCloseAll)GetProcAddress(hDLL, "CloseAll");
  30. 		m_screenrecord.GetMonitorCount = (pGetMonitorCount)GetProcAddress(hDLL, "GetMonitorCount");
  31. 		m_screenrecord.GetMonitorWidth = (pGetMonitorWidth)GetProcAddress(hDLL, "GetMonitorWidth");
  32. 		m_screenrecord.GetMonitorHeight = (pGetMonitorHeight)GetProcAddress(hDLL, "GetMonitorHeight");
  33. 		m_screenrecord.SetEncoderName = (pSetEncoderName)GetProcAddress(hDLL, "SetEncoderName");
  34. 		m_screenrecord.IsRecording = (pIsRecording)GetProcAddress(hDLL, "IsRecording");
  35. 		m_screenrecord.UserKey("test","test");
  36. 		//m_screenrecord.SetHaveCursor(0);
  37. 		int nMonitor=this->GetCheckedRadioButton(IDC_RADIO4,IDC_RADIO5)-IDC_RADIO4;	
  38. 		m_screenrecord.SetMonitor(nMonitor);
  39. 		m_screenrecord.OpenDxgi();
  40. 		m_screenrecord.StartPreview((int)m_vdlg.m_hWnd);
  41. 		
  42. 	}
  43. 	return true;
  44. }
  45.  
  46. void CScreenShareDlg::OnBnClickedOk()
  47. {
  48. 	if(m_recmin.GetChecked())
  49. 	{
  50. 		this->ShowWindow(SW_HIDE);
  51. 		ShowInTaskbar(this->GetSafeHwnd(),0);
  52. 	}
  53.  
  54. 		int nCapAudioType=this->GetCheckedRadioButton(IDC_RADIO1,IDC_RADIO3)-IDC_RADIO1;
  55. 		int nMonitor=this->GetCheckedRadioButton(IDC_RADIO4,IDC_RADIO5)-IDC_RADIO4;
  56. 		int nOutFPS=this->GetCheckedRadioButton(IDC_RADIO10,IDC_RADIO12)-IDC_RADIO10;	
  57. 		int nOutKBPS=this->GetCheckedRadioButton(IDC_RADIO6,IDC_RADIO9)-IDC_RADIO6;	
  58. 		int nEncodeType=m_encodetype.GetChecked();
  59. 		
  60. 		if(m_screenrecord.SetEncoderName)
  61. 			m_screenrecord.SetEncoderName(nEncodeType?"":"libx264");
  62. 		m_screenrecord.SetCapAudioType(nCapAudioType);
  63. 		m_screenrecord.SetMonitor(nMonitor);
  64. 		m_screenrecord.SetVideoProperty(OutKBPS[nOutKBPS]*1024*1024,OutFPS[nOutFPS],OutFPS[nOutFPS]*3);
  65. 		m_screenrecord.StartRecord("c:\\mp4.mp4","c:\\flv.flv");
  66. 		int n0=m_screenrecord.GetCapMod();
  67. 		int n1=m_screenrecord.GetEncoderID();
  68. 		n1=n1;
  69. 		m_nStartTime=::GetTickCount();
  70.  
  71. 		
  72. }

C#调用示例：

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Threading.Tasks;
  9. using System.Windows.Forms;
  10. using System.Runtime.InteropServices;     // DLL support
  11.  
  12. namespace DXGIRecordTest
  13. {
  14.     public partial class Form1 : Form
  15.     {
  16.         [DllImport("user32.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  17.         public static extern void SetProcessDPIAware();
  18.  
  19.  
  20.         //导入xScreenRecord.dll
  21.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  22.         public static extern void UserKey([In, Out] string user, [In, Out] string key);
  23.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  24.         public static extern void StartRecord([In, Out] string szMp4, [In, Out] string szFLv);
  25.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  26.         public static extern void StopRecord();
  27.  
  28.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  29.         public static extern void SetHaveCursor([In, Out] int nHave);
  30.  
  31.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  32.         public static extern void SetCapAudioType([In, Out] int nCapAudioType);
  33.  
  34.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  35.         public static extern void SetMonitor([In, Out] int nMonitorIndex);
  36.  
  37.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  38.         public static extern void SetVideoProperty([In, Out] int bps, [In, Out] int fps, [In, Out] int gop);
  39.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  40.         public static extern int OpenDxgi();
  41.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  42.         public static extern void StartPreview([In, Out] int hWnd);
  43.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  44.         public static extern void StopPreview();
  45.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  46.         public static extern int GetMonitorCount();
  47.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  48.         public static extern int GetMonitorWidth(int nMonitor);
  49.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  50.         public static extern int GetMonitorHeight(int nMonitor);
  51.         [DllImport("xScreenRecord.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
  52.         public static extern void CloseAll();
  53.         public Form1()
  54.         {
  55.             InitializeComponent();
  56.         }
  57.         private void Form1_Load(object sender, EventArgs e)
  58.         {
  59.             SetProcessDPIAware();
  60.             UserKey("test", "test");
  61.             comboBox1.SelectedIndex = 0;
  62.             comboBox2.SelectedIndex = 0;
  63.             checkBox1.Checked = true;
  64.             OpenDxgi();
  65.             StartPreview((int)pictureBox1.Handle);
  66.         }
  67.  
  68.         private void button1_Click(object sender, EventArgs e)//录像
  69.         {
  70.             comboBox2.Enabled = false;
  71.             SetCapAudioType(comboBox1.SelectedIndex);//0麦克风 1计算机 2麦克风+计算机
  72.             SetMonitor(comboBox2.SelectedIndex);//显示器序号
  73.             SetHaveCursor(checkBox1.Checked==true?1:0);//是否录制鼠标
  74.             SetVideoProperty(Convert.ToInt32(bps.Text)*1024*8, Convert.ToInt32(fps.Text), Convert.ToInt32(gop.Text));
  75.             StartRecord("c:\\mp4.mp4","c:\\flv.flv");
  76.         }
  77.  
  78.         private void button2_Click(object sender, EventArgs e)//停止
  79.         {
  80.             StopRecord();
  81.             comboBox2.Enabled = true;
  82.         }
  83.  
  84.         private void Form1_FormClosed(object sender, FormClosedEventArgs e)
  85.         {
  86.             CloseAll();
  87.         }
  88.  
  89.         private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
  90.         {
  91.             int cx=GetMonitorWidth(comboBox2.SelectedIndex);
  92.             int cy = GetMonitorHeight(comboBox2.SelectedIndex);
  93.             label9.Text = comboBox2.Text + cx + "X" + cy;
  94.             SetHaveCursor(checkBox1.Checked == true ? 1 : 0);
  95.             SetMonitor(comboBox2.SelectedIndex);//显示器序号
  96.             OpenDxgi();
  97.             StartPreview((int)pictureBox1.Handle);
  98.         }
  99.  
  100.         private void checkBox1_CheckedChanged(object sender, EventArgs e)
  101.         {
  102.             comboBox2_SelectedIndexChanged(sender,e);
  103.         }
  104.  
  105.  
  106.     }
  107. }

本文DEMO源码下载：

(91条消息) dxgi桌面屏幕录像（windows屏幕录像，硬件编码，声音捕获，音视频同步）-编解码文档类资源-CSDN文库icon-default.png?t=M276https://download.csdn.net/download/xjb2006/85109025

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