From ab88c2f6112edba35bfa91ee8864e760728d16e8 Mon Sep 17 00:00:00 2001
From: german <german@thesoftwareartisans.com>
Date: Fri, 10 Jul 2020 21:20:50 -0500
Subject: First implementation of controller rumble
---
src/input_common/sdl/sdl_impl.cpp | 39 ++++++++++++++++++++++++++++++++++++++-
1 file changed, 38 insertions(+), 1 deletion(-)
(limited to 'src/input_common/sdl/sdl_impl.cpp')
diff --git a/src/input_common/sdl/sdl_impl.cpp b/src/input_common/sdl/sdl_impl.cpp
index a9e676f4b2..27a96c18b7 100644
--- a/src/input_common/sdl/sdl_impl.cpp
+++ b/src/input_common/sdl/sdl_impl.cpp
@@ -5,6 +5,7 @@
#include <algorithm>
#include <array>
#include <atomic>
+#include <chrono>
#include <cmath>
#include <functional>
#include <mutex>
@@ -78,6 +79,33 @@ public:
return state.axes.at(axis) / (32767.0f * range);
}
+ bool RumblePlay(f32 amp_low, f32 amp_high, int time) {
+ const u16 raw_amp_low = static_cast<u16>(amp_low * 0xFFFF);
+ const u16 raw_amp_high = static_cast<u16>(amp_high * 0xFFFF);
+ // Lower drastically the number of state changes
+ if (raw_amp_low >> 11 == last_state_rumble_low >> 11 &&
+ raw_amp_high >> 11 == last_state_rumble_high >> 11) {
+ if (raw_amp_low + raw_amp_high != 0 ||
+ last_state_rumble_low + last_state_rumble_high == 0) {
+ return false;
+ }
+ }
+ // Don't change state if last vibration was < 20ms
+ const auto now = std::chrono::system_clock::now();
+ if (std::chrono::duration_cast<std::chrono::milliseconds>(now - last_vibration) <
+ std::chrono::milliseconds(20)) {
+ return raw_amp_low + raw_amp_high == 0;
+ }
+
+ last_vibration = now;
+ last_state_rumble_low = raw_amp_low;
+ last_state_rumble_high = raw_amp_high;
+ if (sdl_joystick) {
+ SDL_JoystickRumble(sdl_joystick.get(), raw_amp_low, raw_amp_high, time);
+ }
+ return false;
+ }
+
std::tuple<float, float> GetAnalog(int axis_x, int axis_y, float range) const {
float x = GetAxis(axis_x, range);
float y = GetAxis(axis_y, range);
@@ -139,6 +167,9 @@ private:
} state;
std::string guid;
int port;
+ u16 last_state_rumble_high;
+ u16 last_state_rumble_low;
+ std::chrono::time_point<std::chrono::system_clock> last_vibration;
std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> sdl_joystick;
std::unique_ptr<SDL_GameController, decltype(&SDL_GameControllerClose)> sdl_controller;
mutable std::mutex mutex;
@@ -207,7 +238,7 @@ void SDLState::InitJoystick(int joystick_index) {
sdl_gamecontroller = SDL_GameControllerOpen(joystick_index);
}
if (!sdl_joystick) {
- LOG_ERROR(Input, "failed to open joystick {}", joystick_index);
+ LOG_ERROR(Input, "Failed to open joystick {}", joystick_index);
return;
}
const std::string guid = GetGUID(sdl_joystick);
@@ -303,6 +334,12 @@ public:
return joystick->GetButton(button);
}
+ bool SetRumblePlay(f32 amp_high, f32 amp_low, f32 freq_high, f32 freq_low) const override {
+ const f32 new_amp_low = pow(amp_low, 0.5f) * (3.0f - 2.0f * pow(amp_low, 0.15f));
+ const f32 new_amp_high = pow(amp_high, 0.5f) * (3.0f - 2.0f * pow(amp_high, 0.15f));
+ return joystick->RumblePlay(new_amp_low, new_amp_high, 250);
+ }
+
private:
std::shared_ptr<SDLJoystick> joystick;
int button;
--
cgit v1.2.3-70-g09d2