diff options
Diffstat (limited to 'source/3rd-party/SDL2/src/core/windows/SDL_windows.c')
| -rw-r--r-- | source/3rd-party/SDL2/src/core/windows/SDL_windows.c | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/source/3rd-party/SDL2/src/core/windows/SDL_windows.c b/source/3rd-party/SDL2/src/core/windows/SDL_windows.c new file mode 100644 index 0000000..4da7d07 --- /dev/null +++ b/source/3rd-party/SDL2/src/core/windows/SDL_windows.c @@ -0,0 +1,233 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../../SDL_internal.h" + +#if defined(__WIN32__) || defined(__WINRT__) + +#include "SDL_windows.h" +#include "SDL_error.h" +#include "SDL_assert.h" + +#include <objbase.h> /* for CoInitialize/CoUninitialize (Win32 only) */ + +#ifndef _WIN32_WINNT_VISTA +#define _WIN32_WINNT_VISTA 0x0600 +#endif +#ifndef _WIN32_WINNT_WIN7 +#define _WIN32_WINNT_WIN7 0x0601 +#endif + + +/* Sets an error message based on an HRESULT */ +int +WIN_SetErrorFromHRESULT(const char *prefix, HRESULT hr) +{ + TCHAR buffer[1024]; + char *message; + FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, hr, 0, + buffer, SDL_arraysize(buffer), NULL); + message = WIN_StringToUTF8(buffer); + SDL_SetError("%s%s%s", prefix ? prefix : "", prefix ? ": " : "", message); + SDL_free(message); + return -1; +} + +/* Sets an error message based on GetLastError() */ +int +WIN_SetError(const char *prefix) +{ + return WIN_SetErrorFromHRESULT(prefix, GetLastError()); +} + +HRESULT +WIN_CoInitialize(void) +{ + /* SDL handles any threading model, so initialize with the default, which + is compatible with OLE and if that doesn't work, try multi-threaded mode. + + If you need multi-threaded mode, call CoInitializeEx() before SDL_Init() + */ +#ifdef __WINRT__ + /* DLudwig: On WinRT, it is assumed that COM was initialized in main(). + CoInitializeEx is available (not CoInitialize though), however + on WinRT, main() is typically declared with the [MTAThread] + attribute, which, AFAIK, should initialize COM. + */ + return S_OK; +#else + HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED); + if (hr == RPC_E_CHANGED_MODE) { + hr = CoInitializeEx(NULL, COINIT_MULTITHREADED); + } + + /* S_FALSE means success, but someone else already initialized. */ + /* You still need to call CoUninitialize in this case! */ + if (hr == S_FALSE) { + return S_OK; + } + + return hr; +#endif +} + +void +WIN_CoUninitialize(void) +{ +#ifndef __WINRT__ + CoUninitialize(); +#endif +} + +#ifndef __WINRT__ +static BOOL +IsWindowsVersionOrGreater(WORD wMajorVersion, WORD wMinorVersion, WORD wServicePackMajor) +{ + OSVERSIONINFOEXW osvi; + DWORDLONG const dwlConditionMask = VerSetConditionMask( + VerSetConditionMask( + VerSetConditionMask( + 0, VER_MAJORVERSION, VER_GREATER_EQUAL ), + VER_MINORVERSION, VER_GREATER_EQUAL ), + VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL ); + + SDL_zero(osvi); + osvi.dwOSVersionInfoSize = sizeof(osvi); + osvi.dwMajorVersion = wMajorVersion; + osvi.dwMinorVersion = wMinorVersion; + osvi.wServicePackMajor = wServicePackMajor; + + return VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE; +} +#endif + +BOOL WIN_IsWindowsVistaOrGreater(void) +{ +#ifdef __WINRT__ + return TRUE; +#else + return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_VISTA), LOBYTE(_WIN32_WINNT_VISTA), 0); +#endif +} + +BOOL WIN_IsWindows7OrGreater(void) +{ +#ifdef __WINRT__ + return TRUE; +#else + return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WIN7), LOBYTE(_WIN32_WINNT_WIN7), 0); +#endif +} + +/* +WAVExxxCAPS gives you 31 bytes for the device name, and just truncates if it's +longer. However, since WinXP, you can use the WAVExxxCAPS2 structure, which +will give you a name GUID. The full name is in the Windows Registry under +that GUID, located here: HKLM\System\CurrentControlSet\Control\MediaCategories + +Note that drivers can report GUID_NULL for the name GUID, in which case, +Windows makes a best effort to fill in those 31 bytes in the usual place. +This info summarized from MSDN: + +http://web.archive.org/web/20131027093034/http://msdn.microsoft.com/en-us/library/windows/hardware/ff536382(v=vs.85).aspx + +Always look this up in the registry if possible, because the strings are +different! At least on Win10, I see "Yeti Stereo Microphone" in the +Registry, and a unhelpful "Microphone(Yeti Stereo Microph" in winmm. Sigh. + +(Also, DirectSound shouldn't be limited to 32 chars, but its device enum +has the same problem.) + +WASAPI doesn't need this. This is just for DirectSound/WinMM. +*/ +char * +WIN_LookupAudioDeviceName(const WCHAR *name, const GUID *guid) +{ +#if __WINRT__ + return WIN_StringToUTF8(name); /* No registry access on WinRT/UWP, go with what we've got. */ +#else + static const GUID nullguid = { 0 }; + const unsigned char *ptr; + char keystr[128]; + WCHAR *strw = NULL; + SDL_bool rc; + HKEY hkey; + DWORD len = 0; + char *retval = NULL; + + if (WIN_IsEqualGUID(guid, &nullguid)) { + return WIN_StringToUTF8(name); /* No GUID, go with what we've got. */ + } + + ptr = (const unsigned char *) guid; + SDL_snprintf(keystr, sizeof (keystr), + "System\\CurrentControlSet\\Control\\MediaCategories\\{%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X}", + ptr[3], ptr[2], ptr[1], ptr[0], ptr[5], ptr[4], ptr[7], ptr[6], + ptr[8], ptr[9], ptr[10], ptr[11], ptr[12], ptr[13], ptr[14], ptr[15]); + + strw = WIN_UTF8ToString(keystr); + rc = (RegOpenKeyExW(HKEY_LOCAL_MACHINE, strw, 0, KEY_QUERY_VALUE, &hkey) == ERROR_SUCCESS); + SDL_free(strw); + if (!rc) { + return WIN_StringToUTF8(name); /* oh well. */ + } + + rc = (RegQueryValueExW(hkey, L"Name", NULL, NULL, NULL, &len) == ERROR_SUCCESS); + if (!rc) { + RegCloseKey(hkey); + return WIN_StringToUTF8(name); /* oh well. */ + } + + strw = (WCHAR *) SDL_malloc(len + sizeof (WCHAR)); + if (!strw) { + RegCloseKey(hkey); + return WIN_StringToUTF8(name); /* oh well. */ + } + + rc = (RegQueryValueExW(hkey, L"Name", NULL, NULL, (LPBYTE) strw, &len) == ERROR_SUCCESS); + RegCloseKey(hkey); + if (!rc) { + SDL_free(strw); + return WIN_StringToUTF8(name); /* oh well. */ + } + + strw[len / 2] = 0; /* make sure it's null-terminated. */ + + retval = WIN_StringToUTF8(strw); + SDL_free(strw); + return retval ? retval : WIN_StringToUTF8(name); +#endif /* if __WINRT__ / else */ +} + +BOOL +WIN_IsEqualGUID(const GUID * a, const GUID * b) +{ + return (SDL_memcmp(a, b, sizeof (*a)) == 0); +} + +BOOL +WIN_IsEqualIID(REFIID a, REFIID b) +{ + return (SDL_memcmp(a, b, sizeof (*a)) == 0); +} + +#endif /* __WIN32__ || __WINRT__ */ + +/* vi: set ts=4 sw=4 expandtab: */ |