UWP平台Taglib编译(1)

此文已由作者郑博授权网易云社区发布。


欢迎访问网易云社区,了解更多网易技术产品运营经验



最近开始开发UWP平台的App,项目需要用到Taglib进行音视频文件的标签信息读写,Google并没有现成的Binaries可以使用;下面记录下自己编译的全过程。

1.工具准备:

a)Taglib源码:https://taglib.github.io/releases/taglib-1.10.tar.gz (这里选用1.10版本,其他版本可以在https://taglib.github.io上下载)

b)Zlib源码:https://github.com/madler/zlib/archive/v1.2.8.zip (这里选用1.2.8版本,其他版本可以在https://github.com/madler/zlib/releases上下载)

c)CMake工具:https://cmake.org/files/v3.4/cmake-3.4.1-win32-x86.exe (这里选用3.4.1版本,因为3.4.0以后的版本才支持VS2015)

工具安装和源码解压过程不再赘述。

2.Zlib编译:

a)点击“Browse Source...”选择zlib源码的存储目录,点击“Browse Build...”选择工程目录(这里不建议跟源码放在一个目录中,因为UWP要3个平台)

b)点击“Configure”这是会弹出一个选择compiler的弹框,这里简单说明一下,X86选Visual Studio 14 2015,X64选Visual Studio 14 2015 Win64,ARM选Visual Studio 14 2015 ARM,3个平台均勾选Use default native compilers即可,选Finish进行确认

c)修改CMAKE_C_FLAGS,最末尾添加/DWINAPI_FAMILY=WINAPI_FAMILY_APP /D_WIN32_WINNT=0x0A00

d)修改CMAKE_C_STANDARD_LIBRARIES,清空全部字段,填写WindowsApp.lib

e)修改各种INSTALL路径,改成自己的目标目录即可,不再赘述

f)点击Generate,在工程目录里打开zlib.sln,右键INSTALL工程,Build完Zlib就编译完成了,3个平台方法一致

3.Taglib编译:

a)同zlib

b)同zlib

c)修改CMAKE_C_FLAGS & CMAKE_CXX_FLAGS,最末尾添加/D_UNICODE /DUNICODE /DWINAPI_FAMILY=WINAPI_FAMILY_APP /D_WIN32_WINNT=0x0A00

d)修改CMAKE_C_STANDARD_LIBRARIES & CMAKE_CXX_STANDARD_LIBRARIES,清空全部字段,填写WindowsApp.lib

e)勾选ENABLE_STATIC

f)配置ZLIB_INCLUDE_DIR/ZLIB_LIBRARY_DEBUG/ZLIB_LIBRARY_RELEASE

g)修改各种INSTALL路径,改成自己的目标目录即可,不再赘述

h)点击Generate生成工程文件

因为Taglib在文件操作时使用了CreateFileW,但是这些接口UWP上是禁止使用的,我们要修改taglib\toolkit\tfilestream.cpp,完整修改代码如下:

/***************************************************************************
   copyright            : (C) 2002 - 2008 by Scott Wheeler
   email                : wheeler@kde.org
***************************************************************************/

/***************************************************************************
*   This library is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU Lesser General Public License version   *
*   2.1 as published by the Free Software Foundation.                     *
*                                                                         *
*   This library is distributed in the hope that it will be useful, but   *
*   WITHOUT ANY WARRANTY; without even the implied warranty of            *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
*   Lesser General Public License for more details.                       *
*                                                                         *
*   You should have received a copy of the GNU Lesser General Public      *
*   License along with this library; if not, write to the Free Software   *
*   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA         *
*   02110-1301  USA                                                       *
*                                                                         *
*   Alternatively, this file is available under the Mozilla Public        *
*   License Version 1.1.  You may obtain a copy of the License at         *
*   http://www.mozilla.org/MPL/                                           *
***************************************************************************/

#include "tfilestream.h"
#include "tstring.h"
#include "tdebug.h"

#ifdef _WIN32
# include
#else
# include
# include
#endif

#ifdef _WIN32
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP | WINAPI_PARTITION_SYSTEM)
# include
/*
convert string to wstring
*/
std::wstring c2w(const char *data)
{
 int size = MultiByteToWideChar(CP_UTF8, 0, data, -1, nullptr, 0);
 if (size > 0) {
   auto wstr = std::make_unique(size);

   if (MultiByteToWideChar(CP_UTF8, 0, data, -1, wstr.get(), size) > 0) {
     return std::wstring(wstr.get());
   }
 }
 return std::wstring(L"");
}
#endif
#endif

using namespace TagLib;

namespace
{
#ifdef _WIN32

 // Uses Win32 native API instead of POSIX API to reduce the resource consumption.

 typedef FileName FileNameHandle;
 typedef HANDLE FileHandle;

 const FileHandle InvalidFileHandle = INVALID_HANDLE_VALUE;

 inline FileHandle openFile(const FileName &path, bool readOnly)
 {
   const DWORD access = readOnly ? GENERIC_READ : (GENERIC_READ | GENERIC_WRITE);

#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP | WINAPI_PARTITION_SYSTEM)
const wchar_t *fp = NULL;

std::wstring wstr = path.wstr();

if (!wstr.empty())
     fp = wstr.c_str();
else if (!path.str().empty()) {
     wstr = c2w(path.str().c_str());
     if (!wstr.empty())
       fp = wstr.c_str();
}

if (fp)
     return CreateFile2(fp, access, FILE_SHARE_READ, OPEN_EXISTING, NULL);
#else
   if(!path.wstr().empty())
     return CreateFileW(path.wstr().c_str(), access, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
   else if(!path.str().empty())
     return CreateFileA(path.str().c_str(), access, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
#endif
   else
     return InvalidFileHandle;
 }

 inline void closeFile(FileHandle file)
 {
   CloseHandle(file);
 }

 inline size_t readFile(FileHandle file, ByteVector &buffer)
 {
   DWORD length;
   if(ReadFile(file, buffer.data(), static_cast(buffer.size()), &length, NULL))
     return static_cast(length);
   else
     return 0;
 }

 inline size_t writeFile(FileHandle file, const ByteVector &buffer)
 {
   DWORD length;
   if(WriteFile(file, buffer.data(), static_cast(buffer.size()), &length, NULL))
     return static_cast(length);
   else
     return 0;
 }

#else   // _WIN32

 struct FileNameHandle : public std::string
 {
   FileNameHandle(FileName name) : std::string(name) {}
   operator FileName () const { return c_str(); }
 };

 typedef FILE* FileHandle;

 const FileHandle InvalidFileHandle = 0;

 inline FileHandle openFile(const FileName &path, bool readOnly)
 {
   return fopen(path, readOnly ? "rb" : "rb+");
 }

 inline void closeFile(FileHandle file)
 {
   fclose(file);
 }

 inline size_t readFile(FileHandle file, ByteVector &buffer)
 {
   return fread(buffer.data(), sizeof(char), buffer.size(), file);
 }

 inline size_t writeFile(FileHandle file, const ByteVector &buffer)
 {
   return fwrite(buffer.data(), sizeof(char), buffer.size(), file);
 }

相关文章:
【推荐】 MongoDB账号管理及实践
【推荐】 关于内容审核,你需要了解的东西,这里都有!
【推荐】 深入浅出“跨视图数据粒度计算”--1、理解数据的粒度

posted @ 2018-12-04 11:30  网易数帆  阅读(253)  评论(0编辑  收藏  举报