WebRTC Precompiled 使用
最近研究webrtc native code,但源码太大(10GB以上)又需要FQ,就找了个预编译的版本https://sourcey.com/precompiled-webrtc-libraries
下面把引入库的经验写下来
首先需添加宏定义 #define WEBRTC_WIN 不然会报以下错误
Must define either WEBRTC_WIN or WEBRTC_POSIX.
接着还需定义 #define NOMINMAX 因为windows.h中的min max函数与std标准库的冲突
这时只剩下两个错误
C4996 '_vsnwprintf': This function or variable may be unsafe. Consider using _vsnwprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
加入#define _CRT_SECURE_NO_WARNINGS
还有一个错误,不过编译已经通过了
E1574 静态断言失败,原因是 ".data() and .size() are private"
LNK2038 检测到“_ITERATOR_DEBUG_LEVEL”的不匹配项: 值“0”不匹配值“2”
加入预处理#define _ITERATOR_DEBUG_LEVEL 0
可能是Debug项目用到了Release的库
LNK2038 检测到“RuntimeLibrary”的不匹配项: 值“MT_StaticRelease”不匹配值“MD_DynamicRelease”
项目属性-C/C++-代码生成-运行库 改为多线程(/MT)
示例如下,输出视频设备数量
#define WEBRTC_WIN #define NOMINMAX #define _ITERATOR_DEBUG_LEVEL 0 #pragma comment(lib, "libwebrtc_full.lib") #pragma comment( lib, "strmiids.lib" ) #pragma comment(lib, "winmm.lib ") #include "webrtc/modules/video_capture/video_capture_factory.h" #include <iostream> int main() { std::unique_ptr<webrtc::VideoCaptureModule::DeviceInfo> info(webrtc::VideoCaptureFactory::CreateDeviceInfo()); if (info) { int num_devices = info->NumberOfDevices(); std::cout << (num_devices); } std::cout << "Hello World!\n"; }