Media_stream_video example for compiling PPAPI

Media_stream_video example for compiling PPAPI

In Windows, the static library corresponding to the C ++ API of CEF and PPAPI is compiled from the source code compilation file CEF. Now we will compile the media_stream_video example.

Use VS 2013 for compiling.

VS Project Creation

Create a Win32 project named media_stream_video, select the DLL type, and remove the pre-compiled header file stdafx. h and stdafx. cpp, and in the project properties-> Configure properties-> C/C ++-> pre-compilation header, set the value of the pre-compilation header option to not use the pre-compilation header.

Delete automatically generated media_stream_video.cpp.

In "configuration properties-> C/C ++-> code generation-> Runtime Library", set it to MT.

The character set uses the Unicode Character Set.

Add the following directories:

E: \ sources \ CEF \ 2526 \ chromium \ src \ cef \ binary_distrib \ cef_binary_3.2526.1364.gf6bf57b_windows32 // For CEFE: \ sources \ CEF \ 2526 \ chromium \ src \ third_party \ khronos // For GLESE: \ sources \ CEF \ 2526 \ chromium \ src // For ppapiE: \ sources \ CEF \ 2526 \ chromium \ src \ gpu // This is for gl2chromium. h

Copy chromium \ src \ ppapi \ examples \ media_stream_video \ media_stream_video.cc to the project directory and add it to the project.

Add the following path to the additional Library:

E: \ sources \ CEF \ 2526 \ chromium \ src \ cef \ binary_distrib \ cef_binary_3.2526.1364.gf6bf57b_windows32 \ Release // copy all lib here, saving you trouble.

Add dependency libraries such as ppapi_cpp.lib, ppapi_cpp_objects.lib, libGLESv2.dll. lib, and ppapi_gles2.lib.

This is basically the case.

Compile and run

If you compile the project, you will encounter a link error similar to the following:

Media_stream_video.obj: error LNK2001: external symbol that cannot be parsed _ GLES2EnableVertexAttribArray @ 4
Media_stream_video.obj: error LNK2001: external symbol that cannot be parsed _ GLES2UseProgram @ 4
Media_stream_video.obj: error LNK2001: external symbol that cannot be parsed _ GLES2VertexAttribPointer @ 24
Media_stream_video.obj: error LNK2001: external symbol that cannot be parsed _ GLES2ClearColor @ 16
Media_stream_video.obj: error LNK2001: external symbol that cannot be parsed _ GLES2GetAttribLocation @ 8
Media_stream_video.obj: error LNK2001: external symbol that cannot be parsed _ GLES2ActiveTexture @ 4

This is because media_stream_video needs to be linked to ppapi_gles2.lib, and this library is not generated during CEF compilation. We need to compile it manually.

Compile ppapi_gles2

The ppapi_gles2.lib file is not generated when CEF is compiled by default. Fortunately, the ppapi_gles2.ninja file is generated under the chromium \ src \ out \ Release \ obj \ ppapi directory, which is the Build File of ppapi_gles2.lib. At the same time, the build File chromium \ src \ out \ Release \ build of the Release version. the build command and subninja command of ppapi_gles2 are also added at the beginning of ninja, but ppapi_gles2 is not added to the build all target. Therefore, everything is ready for us. Execute the "ninja ppapi_gles2" command in the chromium \ src \ out \ Release directory to compile ppapi_gles2.lib.

This is also a way to manually compile some modules.

Run

Run the following command:

cefsimple.exe --ppapi-out-of-process --register-pepper-plugins="E:\sources\CEF\2526\chromium\src\cef\binary_distrib\cef_binary_3.2526.1364.gf6bf57b_windows32\Release\media_stream_video.dll;application/x-ppapi-example-media-stream-video" --url=file:///E:/sources/CEF/2526/chromium/src/cef/binary_distrib/cef_binary_3.2526.1364.gf6bf57b_windows32/Release/media_stream_video.html

The effect is as follows:

Does it stop here?

Continuing study...