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CEF基於Chromium和Webkit而來,支援PPAPI和NaCI。

CEF3的binary包預設已經支援PPAPI(參考http://magpcss.org/ceforum/viewtopic.php?f=10&t=10509),以cefsimple為例(參考CEF Windows開發環境搭建),可以通過命令列引數來註冊PPAPI plugin,通過–url引數傳遞一個載入對應plugin的html頁面。

下面是我測試可用的一個命令列引數

--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非常簡單,程式碼如下:

<!DOCTYPE html>
<html>
<head>
<title>stub</title>
</head>
<body>
<embed id="plugin" type="application/x-ppapi-stub">
</body>
</html>

其中stub.dll是我編譯的PPAPI SDK裡的示例,做了些許改動。stub.c程式碼如下:

// 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;
}

如你所見,我只是使用OutputDebugString函式輸出了除錯資訊。執行cefsimple,使用DbgView工具可以看到我們輸出的資訊。


關於PPAPI外掛的細節,後面會有一些文章來講。

相關文章參考: