mirror of
https://github.com/yuzu-emu/yuzu.git
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301 lines
8.6 KiB
C++
301 lines
8.6 KiB
C++
// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <algorithm>
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#include <cmath>
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#include "common/input.h"
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#include "common/logging/log.h"
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#include "input_common/helpers/joycon_protocol/rumble.h"
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namespace InputCommon::Joycon {
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RumbleProtocol::RumbleProtocol(std::shared_ptr<JoyconHandle> handle)
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: JoyconCommonProtocol(std::move(handle)) {}
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Common::Input::DriverResult RumbleProtocol::EnableRumble(bool is_enabled) {
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LOG_DEBUG(Input, "Enable Rumble");
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ScopedSetBlocking sb(this);
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const std::array<u8, 1> buffer{static_cast<u8>(is_enabled ? 1 : 0)};
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return SendSubCommand(SubCommand::ENABLE_VIBRATION, buffer);
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}
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Common::Input::DriverResult RumbleProtocol::SendVibration(const VibrationValue& vibration) {
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std::array<u8, sizeof(DefaultVibrationBuffer)> buffer{};
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if (vibration.high_amplitude <= 0.0f && vibration.low_amplitude <= 0.0f) {
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return SendVibrationReport(DefaultVibrationBuffer);
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}
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// Protect joycons from damage from strong vibrations
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const f32 clamp_amplitude =
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1.0f / std::max(1.0f, vibration.high_amplitude + vibration.low_amplitude);
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const u16 encoded_high_frequency = EncodeHighFrequency(vibration.high_frequency);
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const u8 encoded_high_amplitude =
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EncodeHighAmplitude(vibration.high_amplitude * clamp_amplitude);
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const u8 encoded_low_frequency = EncodeLowFrequency(vibration.low_frequency);
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const u16 encoded_low_amplitude = EncodeLowAmplitude(vibration.low_amplitude * clamp_amplitude);
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buffer[0] = static_cast<u8>(encoded_high_frequency & 0xFF);
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buffer[1] = static_cast<u8>(encoded_high_amplitude | ((encoded_high_frequency >> 8) & 0x01));
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buffer[2] = static_cast<u8>(encoded_low_frequency | ((encoded_low_amplitude >> 8) & 0x80));
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buffer[3] = static_cast<u8>(encoded_low_amplitude & 0xFF);
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// Duplicate rumble for now
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buffer[4] = buffer[0];
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buffer[5] = buffer[1];
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buffer[6] = buffer[2];
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buffer[7] = buffer[3];
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return SendVibrationReport(buffer);
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}
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u16 RumbleProtocol::EncodeHighFrequency(f32 frequency) const {
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const u8 new_frequency =
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static_cast<u8>(std::clamp(std::log2(frequency / 10.0f) * 32.0f, 0.0f, 255.0f));
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return static_cast<u16>((new_frequency - 0x60) * 4);
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}
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u8 RumbleProtocol::EncodeLowFrequency(f32 frequency) const {
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const u8 new_frequency =
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static_cast<u8>(std::clamp(std::log2(frequency / 10.0f) * 32.0f, 0.0f, 255.0f));
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return static_cast<u8>(new_frequency - 0x40);
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}
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u8 RumbleProtocol::EncodeHighAmplitude(f32 amplitude) const {
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// More information about these values can be found here:
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// https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering/blob/master/rumble_data_table.md
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static constexpr std::array<std::pair<f32, int>, 101> high_frequency_amplitude{
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std::pair<f32, int>{0.0f, 0x0},
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{0.01f, 0x2},
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{0.012f, 0x4},
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{0.014f, 0x6},
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{0.017f, 0x8},
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{0.02f, 0x0a},
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{0.024f, 0x0c},
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{0.028f, 0x0e},
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{0.033f, 0x10},
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{0.04f, 0x12},
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{0.047f, 0x14},
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{0.056f, 0x16},
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{0.067f, 0x18},
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{0.08f, 0x1a},
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{0.095f, 0x1c},
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{0.112f, 0x1e},
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{0.117f, 0x20},
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{0.123f, 0x22},
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{0.128f, 0x24},
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{0.134f, 0x26},
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{0.14f, 0x28},
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{0.146f, 0x2a},
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{0.152f, 0x2c},
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{0.159f, 0x2e},
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{0.166f, 0x30},
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{0.173f, 0x32},
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{0.181f, 0x34},
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{0.189f, 0x36},
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{0.198f, 0x38},
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{0.206f, 0x3a},
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{0.215f, 0x3c},
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{0.225f, 0x3e},
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{0.23f, 0x40},
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{0.235f, 0x42},
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{0.24f, 0x44},
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{0.245f, 0x46},
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{0.251f, 0x48},
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{0.256f, 0x4a},
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{0.262f, 0x4c},
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{0.268f, 0x4e},
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{0.273f, 0x50},
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{0.279f, 0x52},
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{0.286f, 0x54},
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{0.292f, 0x56},
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{0.298f, 0x58},
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{0.305f, 0x5a},
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{0.311f, 0x5c},
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{0.318f, 0x5e},
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{0.325f, 0x60},
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{0.332f, 0x62},
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{0.34f, 0x64},
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{0.347f, 0x66},
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{0.355f, 0x68},
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{0.362f, 0x6a},
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{0.37f, 0x6c},
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{0.378f, 0x6e},
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{0.387f, 0x70},
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{0.395f, 0x72},
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{0.404f, 0x74},
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{0.413f, 0x76},
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{0.422f, 0x78},
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{0.431f, 0x7a},
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{0.44f, 0x7c},
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{0.45f, 0x7e},
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{0.46f, 0x80},
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{0.47f, 0x82},
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{0.48f, 0x84},
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{0.491f, 0x86},
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{0.501f, 0x88},
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{0.512f, 0x8a},
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{0.524f, 0x8c},
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{0.535f, 0x8e},
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{0.547f, 0x90},
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{0.559f, 0x92},
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{0.571f, 0x94},
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{0.584f, 0x96},
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{0.596f, 0x98},
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{0.609f, 0x9a},
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{0.623f, 0x9c},
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{0.636f, 0x9e},
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{0.65f, 0xa0},
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{0.665f, 0xa2},
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{0.679f, 0xa4},
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{0.694f, 0xa6},
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{0.709f, 0xa8},
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{0.725f, 0xaa},
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{0.741f, 0xac},
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{0.757f, 0xae},
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{0.773f, 0xb0},
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{0.79f, 0xb2},
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{0.808f, 0xb4},
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{0.825f, 0xb6},
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{0.843f, 0xb8},
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{0.862f, 0xba},
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{0.881f, 0xbc},
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{0.9f, 0xbe},
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{0.92f, 0xc0},
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{0.94f, 0xc2},
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{0.96f, 0xc4},
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{0.981f, 0xc6},
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{1.003f, 0xc8},
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};
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for (const auto& [amplitude_value, code] : high_frequency_amplitude) {
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if (amplitude <= amplitude_value) {
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return static_cast<u8>(code);
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}
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}
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return static_cast<u8>(high_frequency_amplitude[high_frequency_amplitude.size() - 1].second);
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}
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u16 RumbleProtocol::EncodeLowAmplitude(f32 amplitude) const {
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// More information about these values can be found here:
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// https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering/blob/master/rumble_data_table.md
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static constexpr std::array<std::pair<f32, int>, 101> high_frequency_amplitude{
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std::pair<f32, int>{0.0f, 0x0040},
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{0.01f, 0x8040},
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{0.012f, 0x0041},
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{0.014f, 0x8041},
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{0.017f, 0x0042},
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{0.02f, 0x8042},
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{0.024f, 0x0043},
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{0.028f, 0x8043},
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{0.033f, 0x0044},
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{0.04f, 0x8044},
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{0.047f, 0x0045},
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{0.056f, 0x8045},
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{0.067f, 0x0046},
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{0.08f, 0x8046},
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{0.095f, 0x0047},
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{0.112f, 0x8047},
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{0.117f, 0x0048},
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{0.123f, 0x8048},
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{0.128f, 0x0049},
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{0.134f, 0x8049},
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{0.14f, 0x004a},
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{0.146f, 0x804a},
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{0.152f, 0x004b},
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{0.159f, 0x804b},
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{0.166f, 0x004c},
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{0.173f, 0x804c},
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{0.181f, 0x004d},
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{0.189f, 0x804d},
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{0.198f, 0x004e},
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{0.206f, 0x804e},
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{0.215f, 0x004f},
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{0.225f, 0x804f},
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{0.23f, 0x0050},
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{0.235f, 0x8050},
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{0.24f, 0x0051},
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{0.245f, 0x8051},
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{0.251f, 0x0052},
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{0.256f, 0x8052},
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{0.262f, 0x0053},
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{0.268f, 0x8053},
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{0.273f, 0x0054},
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{0.279f, 0x8054},
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{0.286f, 0x0055},
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{0.292f, 0x8055},
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{0.298f, 0x0056},
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{0.305f, 0x8056},
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{0.311f, 0x0057},
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{0.318f, 0x8057},
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{0.325f, 0x0058},
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{0.332f, 0x8058},
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{0.34f, 0x0059},
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{0.347f, 0x8059},
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{0.355f, 0x005a},
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{0.362f, 0x805a},
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{0.37f, 0x005b},
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{0.378f, 0x805b},
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{0.387f, 0x005c},
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{0.395f, 0x805c},
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{0.404f, 0x005d},
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{0.413f, 0x805d},
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{0.422f, 0x005e},
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{0.431f, 0x805e},
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{0.44f, 0x005f},
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{0.45f, 0x805f},
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{0.46f, 0x0060},
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{0.47f, 0x8060},
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{0.48f, 0x0061},
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{0.491f, 0x8061},
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{0.501f, 0x0062},
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{0.512f, 0x8062},
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{0.524f, 0x0063},
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{0.535f, 0x8063},
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{0.547f, 0x0064},
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{0.559f, 0x8064},
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{0.571f, 0x0065},
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{0.584f, 0x8065},
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{0.596f, 0x0066},
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{0.609f, 0x8066},
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{0.623f, 0x0067},
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{0.636f, 0x8067},
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{0.65f, 0x0068},
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{0.665f, 0x8068},
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{0.679f, 0x0069},
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{0.694f, 0x8069},
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{0.709f, 0x006a},
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{0.725f, 0x806a},
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{0.741f, 0x006b},
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{0.757f, 0x806b},
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{0.773f, 0x006c},
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{0.79f, 0x806c},
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{0.808f, 0x006d},
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{0.825f, 0x806d},
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{0.843f, 0x006e},
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{0.862f, 0x806e},
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{0.881f, 0x006f},
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{0.9f, 0x806f},
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{0.92f, 0x0070},
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{0.94f, 0x8070},
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{0.96f, 0x0071},
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{0.981f, 0x8071},
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{1.003f, 0x0072},
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};
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for (const auto& [amplitude_value, code] : high_frequency_amplitude) {
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if (amplitude <= amplitude_value) {
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return static_cast<u16>(code);
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}
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}
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return static_cast<u16>(high_frequency_amplitude[high_frequency_amplitude.size() - 1].second);
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}
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} // namespace InputCommon::Joycon
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