Atmosphere/stratosphere/libstratosphere/source/hid/hid_api.cpp
Michael Scire 4059dc6187 Results: Implement namespaced, type-safe results.
Because I was working on multiple things at once, this commit also:
- Adds wrappers for/linker flags to wrap CXX exceptions to make them
  abort. This saves ~0x8000 of memory in every system module.
- Broadly replaces lines of the pattern if (cond) { return ResultX; }
  with R_UNLESS(!cond, ResultX());.
- Reworks the R_TRY_CATCH macros (and the result macros in general).
2019-12-07 12:41:28 -08:00

71 lines
1.9 KiB
C++

/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <set>
#include <switch.h>
#include <stratosphere.hpp>
#include <stratosphere/pm.hpp>
#include <stratosphere/hid.hpp>
namespace sts::hid {
namespace {
/* Global lock. */
os::Mutex g_hid_lock;
bool g_initialized_hid = false;
/* Helper. */
void InitializeHid() {
R_ASSERT(smInitialize());
ON_SCOPE_EXIT { smExit(); };
{
R_ASSERT(hidInitialize());
}
}
Result EnsureHidInitialized() {
if (!g_initialized_hid) {
if (!serviceIsActive(hidGetServiceSession())) {
if (!pm::info::HasLaunchedTitle(ncm::TitleId::Hid)) {
return MAKERESULT(Module_Libnx, LibnxError_InitFail_HID);
}
InitializeHid();
}
g_initialized_hid = true;
}
return ResultSuccess();
}
}
Result GetKeysHeld(u64 *out) {
std::scoped_lock lk(g_hid_lock);
R_TRY(EnsureHidInitialized());
hidScanInput();
*out = 0;
for (size_t controller = 0; controller < 10; controller++) {
*out |= hidKeysHeld(static_cast<HidControllerID>(controller));
}
return ResultSuccess();
}
}