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Frontend: make motion sensor interfaced thread-safe

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This commit is contained in:
wwylele 2016-12-29 21:18:36 +02:00
parent bcf9d20d57
commit d7d40b3c56
2 changed files with 8 additions and 2 deletions
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3
src/core/frontend/emu_window.cpp
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@ -93,6 +93,8 @@ void EmuWindow::TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y) {
void EmuWindow::AccelerometerChanged(float x, float y, float z) {
constexpr float coef = 512;
std::lock_guard<std::mutex> lock(accel_mutex);
// TODO(wwylele): do a time stretch as it in GyroscopeChanged
// The time stretch formula should be like
// stretched_vector = (raw_vector - gravity) * stretch_ratio + gravity
@ -106,6 +108,7 @@ void EmuWindow::GyroscopeChanged(float x, float y, float z) {
float coef = GetGyroscopeRawToDpsCoefficient();
float stretch =
FULL_FPS / Common::Profiling::GetTimingResultsAggregator()->GetAggregatedResults().fps;
std::lock_guard<std::mutex> lock(gyro_mutex);
gyro_x = x * coef * stretch;
gyro_y = y * coef * stretch;
gyro_z = z * coef * stretch;

7
src/core/frontend/emu_window.h
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@ -4,6 +4,7 @@
#pragma once
#include <mutex>
#include <tuple>
#include <utility>
#include "common/common_types.h"
@ -155,10 +156,10 @@ public:
* 1 unit of return value = 1/512 g (measured by hw test),
* where g is the gravitational acceleration (9.8 m/sec2).
* @note This should be called by the core emu thread to get a state set by the window thread.
* @todo Fix this function to be thread-safe.
* @return std::tuple of (x, y, z)
*/
std::tuple<s16, s16, s16> GetAccelerometerState() {
std::lock_guard<std::mutex> lock(accel_mutex);
return std::make_tuple(accel_x, accel_y, accel_z);
}
@ -173,10 +174,10 @@ public:
* 1 unit of return value = (1/coef) deg/sec,
* where coef is the return value of GetGyroscopeRawToDpsCoefficient().
* @note This should be called by the core emu thread to get a state set by the window thread.
* @todo Fix this function to be thread-safe.
* @return std::tuple of (x, y, z)
*/
std::tuple<s16, s16, s16> GetGyroscopeState() {
std::lock_guard<std::mutex> lock(gyro_mutex);
return std::make_tuple(gyro_x, gyro_y, gyro_z);
}
@ -306,10 +307,12 @@ private:
s16 circle_pad_x; ///< Circle pad X-position in native 3DS pixel coordinates (-156 - 156)
s16 circle_pad_y; ///< Circle pad Y-position in native 3DS pixel coordinates (-156 - 156)
std::mutex accel_mutex;
s16 accel_x; ///< Accelerometer X-axis value in native 3DS units
s16 accel_y; ///< Accelerometer Y-axis value in native 3DS units
s16 accel_z; ///< Accelerometer Z-axis value in native 3DS units
std::mutex gyro_mutex;
s16 gyro_x; ///< Gyroscope X-axis value in native 3DS units
s16 gyro_y; ///< Gyroscope Y-axis value in native 3DS units
s16 gyro_z; ///< Gyroscope Z-axis value in native 3DS units