/* * Copyright (c) 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 <stratosphere.hpp> namespace ams::hid { namespace { /* Global lock. */ constinit os::SdkMutex g_hid_lock; constinit bool g_initialized_hid = false; /* Set of supported NpadIds (we want to read from any connected controllers). */ constexpr const HidNpadIdType NpadIdTypes[] = { HidNpadIdType_No1, HidNpadIdType_No2, HidNpadIdType_No3, HidNpadIdType_No4, HidNpadIdType_No5, HidNpadIdType_No6, HidNpadIdType_No7, HidNpadIdType_No8, HidNpadIdType_Handheld, }; constexpr const size_t NumNpadIdTypes = util::size(NpadIdTypes); /* Helper. */ void InitializeHid() { R_ABORT_UNLESS(sm::Initialize()); R_ABORT_UNLESS(hidInitialize()); hidInitializeNpad(); R_ABORT_UNLESS(hidSetSupportedNpadIdType(NpadIdTypes, NumNpadIdTypes)); R_ABORT_UNLESS(hidSetSupportedNpadStyleSet(HidNpadStyleSet_NpadStandard | HidNpadStyleTag_NpadSystemExt)); } Result EnsureHidInitialized() { if (!g_initialized_hid) { if (!serviceIsActive(hidGetServiceSession())) { if (!pm::info::HasLaunchedBootProgram(ncm::SystemProgramId::Hid)) { return MAKERESULT(Module_Libnx, LibnxError_InitFail_HID); } InitializeHid(); } g_initialized_hid = true; } return ResultSuccess(); } u64 ReadHidNpad(HidNpadIdType id) { HidNpadSystemExtState state; size_t count = hidGetNpadStatesSystemExt(id, std::addressof(state), 1); if (count != 0 && (state.attributes & HidNpadAttribute_IsConnected)) { return state.buttons; } return 0; } } Result GetKeysHeld(u64 *out) { std::scoped_lock lk(g_hid_lock); R_TRY(EnsureHidInitialized()); *out = ReadHidNpad(HidNpadIdType_Handheld); for (size_t controller = 0; controller < 8; controller++) { *out |= ReadHidNpad(static_cast<HidNpadIdType>(controller)); } return ResultSuccess(); } }