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Merge pull request #1549 from wwylele/acc_gyro 

hid: implement accelerometer and gyroscope back-end
This commit is contained in:
bunnei 2016-03-25 21:07:21 -04:00
parent b25605e20f 1d2070d0d3
commit 39da819b55
5 changed files with 235 additions and 23 deletions
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48
src/common/emu_window.h
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@ -120,6 +120,54 @@ public:
return std::make_tuple(touch_x, touch_y, touch_pressed);
}
/**
* Gets the current accelerometer state (acceleration along each three axis).
* Axis explained:
* +x is the same direction as LEFT on D-pad.
* +y is normal to the touch screen, pointing outward.
* +z is the same direction as UP on D-pad.
* Units:
* 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 Implement accelerometer input in front-end.
* @return std::tuple of (x, y, z)
*/
std::tuple<s16, s16, s16> GetAccelerometerState() const {
// stubbed
return std::make_tuple(0, -512, 0);
}
/**
* Gets the current gyroscope state (angular rates about each three axis).
* Axis explained:
* +x is the same direction as LEFT on D-pad.
* +y is normal to the touch screen, pointing outward.
* +z is the same direction as UP on D-pad.
* Orientation is determined by right-hand rule.
* Units:
* 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 Implement gyroscope input in front-end.
* @return std::tuple of (x, y, z)
*/
std::tuple<s16, s16, s16> GetGyroscopeState() const {
// stubbed
return std::make_tuple(0, 0, 0);
}
/**
* Gets the coefficient for units conversion of gyroscope state.
* The conversion formula is r = coefficient * v,
* where v is angular rate in deg/sec,
* and r is the gyroscope state.
* @return float-type coefficient
*/
f32 GetGyroscopeRawToDpsCoefficient() const {
return 14.375f; // taken from hw test, and gyroscope's document
}
/**
* Returns currently active configuration.
* @note Accesses to the returned object need not be consistent because it may be modified in another thread

92
src/core/hle/service/hid/hid.cpp
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@ -33,6 +33,11 @@ static Kernel::SharedPtr<Kernel::Event> event_debug_pad;
static u32 next_pad_index;
static u32 next_touch_index;
static u32 next_accelerometer_index;
static u32 next_gyroscope_index;
static int enable_accelerometer_count = 0; // positive means enabled
static int enable_gyroscope_count = 0; // positive means enabled
const std::array<Service::HID::PadState, Settings::NativeInput::NUM_INPUTS> pad_mapping = {{
Service::HID::PAD_A, Service::HID::PAD_B, Service::HID::PAD_X, Service::HID::PAD_Y,
@ -120,6 +125,58 @@ void Update() {
// Signal both handles when there's an update to Pad or touch
event_pad_or_touch_1->Signal();
event_pad_or_touch_2->Signal();
// Update accelerometer
if (enable_accelerometer_count > 0) {
mem->accelerometer.index = next_accelerometer_index;
next_accelerometer_index = (next_accelerometer_index + 1) % mem->accelerometer.entries.size();
AccelerometerDataEntry& accelerometer_entry = mem->accelerometer.entries[mem->accelerometer.index];
std::tie(accelerometer_entry.x, accelerometer_entry.y, accelerometer_entry.z)
= VideoCore::g_emu_window->GetAccelerometerState();
// Make up "raw" entry
// TODO(wwylele):
// From hardware testing, the raw_entry values are approximately,
// but not exactly, as twice as corresponding entries (or with a minus sign).
// It may caused by system calibration to the accelerometer.
// Figure out how it works, or, if no game reads raw_entry,
// the following three lines can be removed and leave raw_entry unimplemented.
mem->accelerometer.raw_entry.x = -2 * accelerometer_entry.x;
mem->accelerometer.raw_entry.z = 2 * accelerometer_entry.y;
mem->accelerometer.raw_entry.y = -2 * accelerometer_entry.z;
// If we just updated index 0, provide a new timestamp
if (mem->accelerometer.index == 0) {
mem->accelerometer.index_reset_ticks_previous = mem->accelerometer.index_reset_ticks;
mem->accelerometer.index_reset_ticks = (s64)CoreTiming::GetTicks();
}
event_accelerometer->Signal();
}
// Update gyroscope
if (enable_gyroscope_count > 0) {
mem->gyroscope.index = next_gyroscope_index;
next_gyroscope_index = (next_gyroscope_index + 1) % mem->gyroscope.entries.size();
GyroscopeDataEntry& gyroscope_entry = mem->gyroscope.entries[mem->gyroscope.index];
std::tie(gyroscope_entry.x, gyroscope_entry.y, gyroscope_entry.z)
= VideoCore::g_emu_window->GetGyroscopeState();
// Make up "raw" entry
mem->gyroscope.raw_entry.x = gyroscope_entry.x;
mem->gyroscope.raw_entry.z = -gyroscope_entry.y;
mem->gyroscope.raw_entry.y = gyroscope_entry.z;
// If we just updated index 0, provide a new timestamp
if (mem->gyroscope.index == 0) {
mem->gyroscope.index_reset_ticks_previous = mem->gyroscope.index_reset_ticks;
mem->gyroscope.index_reset_ticks = (s64)CoreTiming::GetTicks();
}
event_gyroscope->Signal();
}
}
void GetIPCHandles(Service::Interface* self) {
@ -139,40 +196,69 @@ void GetIPCHandles(Service::Interface* self) {
void EnableAccelerometer(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
++enable_accelerometer_count;
event_accelerometer->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_WARNING(Service_HID, "(STUBBED) called");
LOG_DEBUG(Service_HID, "called");
}
void DisableAccelerometer(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
--enable_accelerometer_count;
event_accelerometer->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_WARNING(Service_HID, "(STUBBED) called");
LOG_DEBUG(Service_HID, "called");
}
void EnableGyroscopeLow(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
++enable_gyroscope_count;
event_gyroscope->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_WARNING(Service_HID, "(STUBBED) called");
LOG_DEBUG(Service_HID, "called");
}
void DisableGyroscopeLow(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
--enable_gyroscope_count;
event_gyroscope->Signal();
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_DEBUG(Service_HID, "called");
}
void GetGyroscopeLowRawToDpsCoefficient(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = RESULT_SUCCESS.raw;
f32 coef = VideoCore::g_emu_window->GetGyroscopeRawToDpsCoefficient();
memcpy(&cmd_buff[2], &coef, 4);
}
void GetGyroscopeLowCalibrateParam(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = RESULT_SUCCESS.raw;
const s16 param_unit = 6700; // an approximate value taken from hw
GyroscopeCalibrateParam param = {
{ 0, param_unit, -param_unit },
{ 0, param_unit, -param_unit },
{ 0, param_unit, -param_unit },
};
memcpy(&cmd_buff[2], &param, sizeof(param));
LOG_WARNING(Service_HID, "(STUBBED) called");
}

78
src/core/hle/service/hid/hid.h
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@ -77,6 +77,24 @@ struct TouchDataEntry {
BitField<0, 7, u32> valid; ///< Set to 1 when this entry contains actual X/Y data, otherwise 0
};
/**
* Structure of a single entry of accelerometer state history within HID shared memory
*/
struct AccelerometerDataEntry {
s16 x;
s16 y;
s16 z;
};
/**
* Structure of a single entry of gyroscope state history within HID shared memory
*/
struct GyroscopeDataEntry {
s16 x;
s16 y;
s16 z;
};
/**
* Structure of data stored in HID shared memory
*/
@ -112,6 +130,46 @@ struct SharedMem {
std::array<TouchDataEntry, 8> entries; ///< Last 8 touch entries, in pixel coordinates
} touch;
/// Accelerometer data
struct {
s64 index_reset_ticks; ///< CPU tick count for when HID module updated entry index 0
s64 index_reset_ticks_previous; ///< Previous `index_reset_ticks`
u32 index; ///< Index of the last updated accelerometer entry
INSERT_PADDING_WORDS(0x1);
AccelerometerDataEntry raw_entry;
INSERT_PADDING_BYTES(2);
std::array<AccelerometerDataEntry, 8> entries;
} accelerometer;
/// Gyroscope data
struct {
s64 index_reset_ticks; ///< CPU tick count for when HID module updated entry index 0
s64 index_reset_ticks_previous; ///< Previous `index_reset_ticks`
u32 index; ///< Index of the last updated accelerometer entry
INSERT_PADDING_WORDS(0x1);
GyroscopeDataEntry raw_entry;
INSERT_PADDING_BYTES(2);
std::array<GyroscopeDataEntry, 32> entries;
} gyroscope;
};
/**
* Structure of calibrate params that GetGyroscopeLowCalibrateParam returns
*/
struct GyroscopeCalibrateParam {
struct {
// TODO (wwylele): figure out the exact meaning of these params
s16 zero_point;
s16 positive_unit_point;
s16 negative_unit_point;
} x, y, z;
};
// TODO: MSVC does not support using offsetof() on non-static data members even though this
@ -222,6 +280,26 @@ void DisableGyroscopeLow(Interface* self);
*/
void GetSoundVolume(Interface* self);
/**
* HID::GetGyroscopeLowRawToDpsCoefficient service function
* Inputs:
* None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : float output value
*/
void GetGyroscopeLowRawToDpsCoefficient(Service::Interface* self);
/**
* HID::GetGyroscopeLowCalibrateParam service function
* Inputs:
* None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2~6 (18 bytes) : struct GyroscopeCalibrateParam
*/
void GetGyroscopeLowCalibrateParam(Service::Interface* self);
/// Checks for user input updates
void Update();

20
src/core/hle/service/hid/hid_spvr.cpp
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@ -9,16 +9,16 @@ namespace Service {
namespace HID {
const Interface::FunctionInfo FunctionTable[] = {
{0x000A0000, GetIPCHandles, "GetIPCHandles"},
{0x000B0000, nullptr, "StartAnalogStickCalibration"},
{0x000E0000, nullptr, "GetAnalogStickCalibrateParam"},
{0x00110000, EnableAccelerometer, "EnableAccelerometer"},
{0x00120000, DisableAccelerometer, "DisableAccelerometer"},
{0x00130000, EnableGyroscopeLow, "EnableGyroscopeLow"},
{0x00140000, DisableGyroscopeLow, "DisableGyroscopeLow"},
{0x00150000, nullptr, "GetGyroscopeLowRawToDpsCoefficient"},
{0x00160000, nullptr, "GetGyroscopeLowCalibrateParam"},
{0x00170000, GetSoundVolume, "GetSoundVolume"},
{0x000A0000, GetIPCHandles, "GetIPCHandles"},
{0x000B0000, nullptr, "StartAnalogStickCalibration"},
{0x000E0000, nullptr, "GetAnalogStickCalibrateParam"},
{0x00110000, EnableAccelerometer, "EnableAccelerometer"},
{0x00120000, DisableAccelerometer, "DisableAccelerometer"},
{0x00130000, EnableGyroscopeLow, "EnableGyroscopeLow"},
{0x00140000, DisableGyroscopeLow, "DisableGyroscopeLow"},
{0x00150000, GetGyroscopeLowRawToDpsCoefficient, "GetGyroscopeLowRawToDpsCoefficient"},
{0x00160000, GetGyroscopeLowCalibrateParam, "GetGyroscopeLowCalibrateParam"},
{0x00170000, GetSoundVolume, "GetSoundVolume"},
};
HID_SPVR_Interface::HID_SPVR_Interface() {

20
src/core/hle/service/hid/hid_user.cpp
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@ -9,16 +9,16 @@ namespace Service {
namespace HID {
const Interface::FunctionInfo FunctionTable[] = {
{0x000A0000, GetIPCHandles, "GetIPCHandles"},
{0x000B0000, nullptr, "StartAnalogStickCalibration"},
{0x000E0000, nullptr, "GetAnalogStickCalibrateParam"},
{0x00110000, EnableAccelerometer, "EnableAccelerometer"},
{0x00120000, DisableAccelerometer, "DisableAccelerometer"},
{0x00130000, EnableGyroscopeLow, "EnableGyroscopeLow"},
{0x00140000, DisableGyroscopeLow, "DisableGyroscopeLow"},
{0x00150000, nullptr, "GetGyroscopeLowRawToDpsCoefficient"},
{0x00160000, nullptr, "GetGyroscopeLowCalibrateParam"},
{0x00170000, GetSoundVolume, "GetSoundVolume"},
{0x000A0000, GetIPCHandles, "GetIPCHandles"},
{0x000B0000, nullptr, "StartAnalogStickCalibration"},
{0x000E0000, nullptr, "GetAnalogStickCalibrateParam"},
{0x00110000, EnableAccelerometer, "EnableAccelerometer"},
{0x00120000, DisableAccelerometer, "DisableAccelerometer"},
{0x00130000, EnableGyroscopeLow, "EnableGyroscopeLow"},
{0x00140000, DisableGyroscopeLow, "DisableGyroscopeLow"},
{0x00150000, GetGyroscopeLowRawToDpsCoefficient, "GetGyroscopeLowRawToDpsCoefficient"},
{0x00160000, GetGyroscopeLowCalibrateParam, "GetGyroscopeLowCalibrateParam"},
{0x00170000, GetSoundVolume, "GetSoundVolume"},
};
HID_U_Interface::HID_U_Interface() {