TRTC VS2019 C++集成使用腾讯云音视频SDK

项目准备

1. 找到腾讯云TRTC官方文档，下载SDK 官方文档地址:https://cloud.tencent.com/document/product/647
   WindowsC++官方下载地址:https://liteav.sdk.qcloud.com/download/latest/TXLiteAVSDK_TRTC_Win_latest.zip
2. 解压文件夹，找到SDK>CPlusPlus目录
   
3. 根据你的需要选择32位（win32文件夹内）还是64位（win64文件夹内）版本。我这里以win32 版本为主。
4. 使用VS2019 建一个控制台应用程序,使用WindowsSDK基本包即可。调整项目目录，如下：
   
   
5. 修改项目配置，将"项目目录>include"添加到include搜索路径，具体修改方法" 右键项目>属性>vc++目录>常规>包含目录 添加include文件夹路径"

书写代码

def.h 根据实际需求修改

#pragma once

#define WIN_CLASSNAME TEXT("My_Widget")
#define WIN_WINDNAME TEXT("Worker")

#define GET_PARAMS(params,type,index) *((type *)((void ** )params)[index])
#define THREAD_PARAMS(params,type,index) GET_PARAMS(params,type,index)

#include <iostream>
#define COUT() std::cout
#define COUT_ERROR(code,msg) std::cout<<"Error("<<code<<"): at "<<__FILE__<<":"<<__LINE__<<" what:"<<msg
#define COUT_ERRORLN(code,msg) COUT_ERROR(code,msg)<<std::endl
#define COUT_MESSAGE(msg) std::cout<<"Message: at "<<__FILE__<<":"<<__LINE__<<" message:"<<msg
#define COUT_MESSAGELN(msg) COUT_MESSAGE(msg)<<std::endl
#define COUT_LN() std::endl

mian.cpp。

#include <Windows.h>

#include <time.h>

#include <iostream>
#include <vector>

//TX TRTC
#include <TRTC/TXLiteAVBase.h>
#include <TRTC/ITRTCCloud.h>
#include <TRTC/ITXLiteAVLocalRecord.h>

#pragma comment(lib, "liteav.lib")

#include <math.h>

#include "def.h"

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
int main(int argc, const char** argv) {

	COUT_MESSAGELN(getLiteAvSDKVersion());
	HINSTANCE hInstance = GetModuleHandle(NULL);
	WNDCLASS wndclass;
	wndclass.style = CS_HREDRAW | CS_VREDRAW;
	wndclass.lpfnWndProc = WndProc;
	wndclass.cbClsExtra = 0;
	wndclass.cbWndExtra = 0;
	wndclass.hInstance = hInstance;
	wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
	wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wndclass.lpszMenuName = NULL;
	wndclass.lpszClassName = WIN_CLASSNAME;
	ATOM atRet = RegisterClass(&wndclass);
	HWND hWndMian = CreateWindow(WIN_CLASSNAME, L"显示远端的窗口", WS_OVERLAPPEDWINDOW | WS_POPUP,
		10, 10, 800, 600,
		NULL, NULL, hInstance, NULL);
	ShowWindow(hWndMian, SW_SHOW);
	UpdateWindow(hWndMian);
	HWND hwndChildMy = CreateWindow(WIN_CLASSNAME, L"显示自己的窗口", WS_VISIBLE | WS_CHILD,
		30, 30, 200, 180,
		hWndMian, NULL, hInstance, NULL);

	int iAppid = 0; //这里填充在腾讯云控制台创建的应用ID
	std::string strUserId = "";

	std::cout << "请输入UserId:" << std::endl;
	
	std::cin >> strUserId;
	/*{//向服务器获取签名
		HttpClient stHttpClient(L"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0");
		WCHAR wcstrBuf[1024];
		wsprintf(wcstrBuf, L"http://127.0.0.1:8081/trtc/userssig?uid=%s", strUserId.c_str());
		std::string strResText = "";
		std::vector<std::wstring> headers;
		headers.push_back(L"Host:127.0.0.1");
		stHttpClient.http_get(wcstrBuf, headers, strResText);
	}*/
	std::cout << "输入签名:" << std::endl;
	std::cin >> strResText;
	//打印签名
	std::cout << strResText << std::endl;
	
	
	MyColudCallback stCallBack;
	ITRTCCloud* pstCould = getTRTCShareInstance();
	void* callbackParams[3] = { &pstCould,&hwndChildMy,&hWndMian};
	stCallBack._params = callbackParams;
	pstCould->addCallback(&stCallBack);

	pstCould->startLocalPreview(hwndChildMy);

	TRTCParams trtcParams;
	trtcParams.sdkAppId = iAppid;
	trtcParams.userId = strUserId.c_str();
	trtcParams.userSig = strResText.c_str();
	trtcParams.roomId = 1001;
	pstCould->enterRoom(trtcParams, trtc::TRTCAppScene::TRTCAppSceneVideoCall);

	
	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0))
	{
		if (msg.message == WM_QUIT)
		{
			break;
		}
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	pstCould->exitRoom();
	return 0;
}


LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
	switch (message)
	{
	case WM_PAINT:
	{
		PAINTSTRUCT ps;
		HDC hdc = BeginPaint(hWnd, &ps);
		// TODO: 在此处添加使用 hdc 的任何绘图代码...
		EndPaint(hWnd, &ps);
	}
	break;
	case WM_CREATE:
	{
	}
	break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

MyColudCallback .h TRTCCould回调，在此类中重写ITRTCCloudCallback的虚函数

#pragma once

#include <TRTC/ITRTCCloud.h>
class MyColudCallback : public trtc::ITRTCCloudCallback
{
public:
	MyColudCallback(void* params = NULL);
public:

	virtual void onError(TXLiteAVError errCode, const char* errMsg, void* extraInfo) override;

	virtual void onWarning(TXLiteAVWarning warningCode, const char* warningMsg, void* extraInfo) override;

public:
	virtual void onEnterRoom(int result) override;

	virtual void onExitRoom(int reason) override;

	virtual void onRemoteUserEnterRoom(const char* userId) override;
	
	virtual void onFirstVideoFrame(const char* cstrUserId, const TRTCVideoStreamType streamType, const int width, const int height) override;

public:
	void* _params;
};

MyColudCallback.cpp

#include "MyColudCallback.h"
#include "def.h"

MyColudCallback::MyColudCallback(void * params) {
	_params = params;
}

void MyColudCallback::onError(TXLiteAVError errCode, const char* errMsg, void* extraInfo)
{
	COUT_ERRORLN(errCode, errMsg);
}

void MyColudCallback::onWarning(TXLiteAVWarning warningCode, const char* warningMsg, void* extraInfo)
{
	COUT_MESSAGELN(warningMsg);
}

void MyColudCallback::onEnterRoom(int result)
{
	if(reuslt < 0 ){
		//出错误了
	}
	COUT_MESSAGE("加入房间:Result = ") << result << COUT_LN();
}

void MyColudCallback::onExitRoom(int reason)
{
	COUT_MESSAGE("退出房间:reason = ") << reason << COUT_LN();
}

void MyColudCallback::onRemoteUserEnterRoom(const char* userId)
{
	ITRTCCloud* pstCould = GET_PARAMS(_params, ITRTCCloud*,0);
	HWND hwndChildMy = GET_PARAMS(_params, HWND, 1);
	HWND hwndMain = GET_PARAMS(_params, HWND, 2);
	//拉取房间内远端数据，渲染到主要窗口中
	pstCould->startRemoteView(userId, TRTCVideoStreamTypeBig, hwndMain);
}

void MyColudCallback::onFirstVideoFrame(const char* cstrUserId, const TRTCVideoStreamType streamType, const int width, const int height)
{
	COUT() << "\n开始渲染视频:\t " << width << " x " << height << COUT_LN();
}