CEF加载PPAPI插件
最后更新于:2022-04-01 16:02:42
CEF基于Chromium和Webkit而来,支持PPAPI和NaCI。
CEF3的binary包默认已经支持PPAPI(参考[http://magpcss.org/ceforum/viewtopic.php?f=10&t=10509](http://magpcss.org/ceforum/viewtopic.php?f=10&t=10509)),以cefsimple为例(参考[**CEF Windows开发环境搭建**](http://blog.csdn.net/foruok/article/details/50468642)),可以通过命令行参数来注册PPAPI plugin,通过–url参数传递一个加载对应plugin的html页面。
下面是我测试可用的一个命令行参数
~~~
--ppapi-out-of-process --register-pepper-plugins="D:\projects\cef_binary_3.2357.1271.g8e0674e_windows32\Release\stub.dll;application/x-ppapi-stub" --url=file:///d:/projects/cef_binary_3.2357.1271.g8e0674e_windows32/Release/stub.html
~~~
stub.html非常简单,代码如下:
~~~
<!DOCTYPE html>
<html>
<head>
<title>stub</title>
</head>
<body>
<embed id="plugin" type="application/x-ppapi-stub">
</body>
</html>
~~~
其中stub.dll是我编译的PPAPI SDK里的示例,做了些许改动。stub.c代码如下:
~~~
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is the simplest possible C Pepper plugin that does nothing. If you're
// using C++, you will want to look at stub.cc which uses the more convenient
// C++ wrappers.
#include <stddef.h>
#include <stdint.h>
#include <Windows.h>
#include <tchar.h>
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_module.h"
#include "ppapi/c/ppb.h"
#include "ppapi/c/ppp.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/ppp_instance.h"
PP_Module g_module_id;
PPB_GetInterface g_get_browser_interface = NULL;
PP_EXPORT int32_t PPP_InitializeModule(PP_Module module_id,
PPB_GetInterface get_browser_interface) {
// Save the global module information for later.
g_module_id = module_id;
g_get_browser_interface = get_browser_interface;
OutputDebugString(_T("PPP_InitializeModule was called\r\n"));
return PP_OK;
}
PP_EXPORT void PPP_ShutdownModule() {
OutputDebugString(_T("PPP_ShutdownModule was called\r\n"));
}
PP_EXPORT const void* PPP_GetInterface(const char* interface_name) {
// You will normally implement a getter for at least PPP_INSTANCE_INTERFACE
// here.
return NULL;
}
~~~
如你所见,我只是使用OutputDebugString函数输出了调试信息。运行cefsimple,使用DbgView工具可以看到我们输出的信息。
关于PPAPI插件的细节,后面会有一些文章来讲。
相关文章参考:
- [**CEF Windows开发环境搭建**](http://blog.csdn.net/foruok/article/details/50468642)