Adding support for WinRT(WinPhone 8/8.1 and Win Store) via CMake 3.1

- Substituted HAVE_WINRT with WINRT
- Fixed compilation issues in ocl.cpp and parallel.cpp
- Fixed compiler issue for WP8: "C2678: binary '+' : no operator found which takes a left-hand - Fixed gitignore
- Added #ifdef HAVE_OPENCL to remove compiler warnings in ocl.cpp
- Used NO_GETENV similar to '3rdparty\libjpeg\jmemmgr.c;
- Added ole32.lib for core module (for WindowsStore 8.0 builds)
- Made OpenCV_ARCH aware of ARM

Signed-off-by: Maxim Kostin <v-maxkos@microsoft.com>

modules/core/src/glob.cpp

@@ -56,14 +56,14 @@ namespace
 
     struct DIR
     {
-#ifdef HAVE_WINRT
+#ifdef WINRT
         WIN32_FIND_DATAW data;
 #else
         WIN32_FIND_DATA data;
 #endif
         HANDLE handle;
         dirent ent;
-#ifdef HAVE_WINRT
+#ifdef WINRT
         DIR() { }
         ~DIR()
         {
@@ -77,7 +77,7 @@ namespace
     {
         DIR* dir = new DIR;
         dir->ent.d_name = 0;
-#ifdef HAVE_WINRT
+#ifdef WINRT
         cv::String full_path = cv::String(path) + "\\*";
         wchar_t wfull_path[MAX_PATH];
         size_t copied = mbstowcs(wfull_path, full_path.c_str(), MAX_PATH);
@@ -99,7 +99,7 @@ namespace
 
     dirent* readdir(DIR* dir)
     {
-#ifdef HAVE_WINRT
+#ifdef WINRT
         if (dir->ent.d_name != 0)
         {
             if (::FindNextFileW(dir->handle, &dir->data) != TRUE)
@@ -147,7 +147,7 @@ static bool isDir(const cv::String& path, DIR* dir)
     else
     {
         WIN32_FILE_ATTRIBUTE_DATA all_attrs;
-#ifdef HAVE_WINRT
+#ifdef WINRT
         wchar_t wpath[MAX_PATH];
         size_t copied = mbstowcs(wpath, path.c_str(), MAX_PATH);
         CV_Assert((copied != MAX_PATH) && (copied != (size_t)-1));

modules/core/src/ocl.cpp

@@ -64,7 +64,15 @@
 // TODO Move to some common place
 static bool getBoolParameter(const char* name, bool defaultValue)
 {
+/*
+ * If your system doesn't support getenv(), define NO_GETENV to disable
+ * this feature.
+ */
+#ifdef NO_GETENV
+    const char* envValue = NULL;
+#else
     const char* envValue = getenv(name);
+#endif
     if (envValue == NULL)
     {
         return defaultValue;
@@ -85,7 +93,7 @@ static bool getBoolParameter(const char* name, bool defaultValue)
 // TODO Move to some common place
 static size_t getConfigurationParameterForSize(const char* name, size_t defaultValue)
 {
-#ifdef HAVE_WINRT
+#ifdef NO_GETENV
     const char* envValue = NULL;
 #else
     const char* envValue = getenv(name);
@@ -728,7 +736,7 @@ static void* initOpenCLAndLoad(const char* funcname)
     static HMODULE handle = 0;
     if (!handle)
     {
-#ifndef HAVE_WINRT
+#ifndef WINRT
         if(!initialized)
         {
             handle = LoadLibraryA("OpenCL.dll");
@@ -2190,6 +2198,7 @@ inline cl_int getStringInfo(Functor f, ObjectType obj, cl_uint name, std::string
     return CL_SUCCESS;
 }
 
+#ifdef HAVE_OPENCL
 static void split(const std::string &s, char delim, std::vector<std::string> &elems)
 {
     elems.clear();
@@ -2230,8 +2239,9 @@ static bool parseOpenCLDeviceConfiguration(const std::string& configurationStr,
     }
     return true;
 }
+#endif
 
-#ifdef HAVE_WINRT
+#ifdef WINRT
 static cl_device_id selectOpenCLDevice()
 {
     return NULL;

modules/core/src/parallel.cpp

@@ -69,7 +69,7 @@
     #define HAVE_GCD
 #endif
 
-#if defined _MSC_VER && _MSC_VER >= 1600
+#if defined _MSC_VER && _MSC_VER >= 1600 && !defined(WINRT)
     #define HAVE_CONCURRENCY
 #endif
 
@@ -458,7 +458,7 @@ int cv::getNumberOfCPUs(void)
 {
 #if defined WIN32 || defined _WIN32
     SYSTEM_INFO sysinfo;
-#if defined(_M_ARM) || defined(_M_X64) || defined(HAVE_WINRT)
+#if defined(_M_ARM) || defined(_M_X64) || defined(WINRT)
     GetNativeSystemInfo( &sysinfo );
 #else
     GetSystemInfo( &sysinfo );

modules/core/src/system.cpp

@@ -109,7 +109,7 @@
   #endif
 #endif
 
-#ifdef HAVE_WINRT
+#ifdef WINRT
 #include <wrl/client.h>
 #ifndef __cplusplus_winrt
 #include <windows.storage.h>
@@ -159,7 +159,7 @@ std::wstring GetTempFileNameWinRT(std::wstring prefix)
              UINT(g.Data4[2]), UINT(g.Data4[3]), UINT(g.Data4[4]),
              UINT(g.Data4[5]), UINT(g.Data4[6]), UINT(g.Data4[7]));
 
-    return prefix + std::wstring(guidStr);
+    return prefix.append(std::wstring(guidStr));
 }
 
 #endif
@@ -542,12 +542,12 @@ String format( const char* fmt, ... )
 String tempfile( const char* suffix )
 {
     String fname;
-#ifndef HAVE_WINRT
+#ifndef WINRT
     const char *temp_dir = getenv("OPENCV_TEMP_PATH");
 #endif
 
 #if defined WIN32 || defined _WIN32
-#ifdef HAVE_WINRT
+#ifdef WINRT
     RoInitialize(RO_INIT_MULTITHREADED);
     std::wstring temp_dir = L"";
     const wchar_t* opencv_temp_dir = GetTempPathWinRT().c_str();
@@ -559,7 +559,7 @@ String tempfile( const char* suffix )
     if (temp_file.empty())
         return String();
 
-    temp_file = temp_dir + std::wstring(L"\\") + temp_file;
+    temp_file = temp_dir.append(std::wstring(L"\\")).append(temp_file);
     DeleteFileW(temp_file.c_str());
 
     char aname[MAX_PATH];
@@ -955,7 +955,7 @@ public:
 #pragma warning(disable:4505) // unreferenced local function has been removed
 #endif
 
-#ifdef HAVE_WINRT
+#ifdef WINRT
     // using C++11 thread attribute for local thread data
     static __declspec( thread ) TLSStorage* g_tlsdata = NULL;
 
@@ -1006,10 +1006,10 @@ public:
         }
         return d;
     }
-#endif //HAVE_WINRT
+#endif //WINRT
 
 #if defined CVAPI_EXPORTS && defined WIN32 && !defined WINCE
-#ifdef HAVE_WINRT
+#ifdef WINRT
     #pragma warning(disable:4447) // Disable warning 'main' signature found without threading model
 #endif