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add 8BitDo Controller sensor_timestamp (#13278)

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8BitDo
2025-06-26 09:49:43 +08:00
committed by GitHub
parent 727b4924c8
commit 6d3e8b749e
1 changed files with 29 additions and 0 deletions
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29
src/joystick/hidapi/SDL_hidapi_8bitdo.c
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@@ -22,6 +22,7 @@
#ifdef SDL_JOYSTICK_HIDAPI
#include "../../SDL_hints_c.h"
#include "../SDL_sysjoystick.h"
#include "SDL_hidapijoystick_c.h"
#include "SDL_hidapi_rumble.h"
@@ -47,9 +48,17 @@ enum
#define SDL_8BITDO_REPORTID_NOT_SUPPORTED_SDL_REPORTID 0x03
#define SDL_8BITDO_BT_REPORTID_SDL_REPORTID 0x01
#define SDL_8BITDO_SENSOR_TIMESTAMP_ENABLE 0xAA
#define ABITDO_ACCEL_SCALE 4096.f
#define ABITDO_GYRO_MAX_DEGREES_PER_SECOND 2000.f
#define LOAD32(A, B, C, D) ((((Uint32)(A)) << 0) | \
(((Uint32)(B)) << 8) | \
(((Uint32)(C)) << 16) | \
(((Uint32)(D)) << 24))
typedef struct
{
bool sensors_supported;
@@ -61,6 +70,7 @@ typedef struct
bool rgb_supported;
bool player_led_supported;
bool powerstate_supported;
bool sensor_timestamp_supported;
Uint8 serial[6];
Uint16 version;
Uint16 version_beta;
@@ -69,6 +79,7 @@ typedef struct
Uint8 last_state[USB_PACKET_LENGTH];
Uint64 sensor_timestamp; // Nanoseconds. Simulate onboard clock. Different models have different rates vs different connection styles.
Uint64 sensor_timestamp_interval;
Uint32 last_tick;
} SDL_Driver8BitDo_Context;
#pragma pack(push,1)
@@ -181,6 +192,9 @@ static bool HIDAPI_Driver8BitDo_InitDevice(SDL_HIDAPI_Device *device)
ctx->rumble_supported = true;
ctx->powerstate_supported = true;
if (data[13] == SDL_8BITDO_SENSOR_TIMESTAMP_ENABLE) {
ctx->sensor_timestamp_supported = true;
}
// Set the serial number to the Bluetooth MAC address
if (size >= 12 && data[10] != 0) {
char serial[18];
@@ -544,6 +558,21 @@ static void HIDAPI_Driver8BitDo_HandleStatePacket(SDL_Joystick *joystick, SDL_Dr
float values[3];
ABITDO_SENSORS *sensors = (ABITDO_SENSORS *)&data[15];
if (ctx->sensor_timestamp_supported) {
Uint32 delta;
Uint32 tick = LOAD32(data[27], data[28], data[29], data[30]);
if (ctx->last_tick) {
if (ctx->last_tick < tick) {
delta = (tick - ctx->last_tick);
} else {
delta = (SDL_MAX_UINT32 - ctx->last_tick + tick + 1);
}
ctx->sensor_timestamp_interval = SDL_US_TO_NS(delta);
}
ctx->last_tick = tick;
}
// Note: we cannot use the time stamp of the receiving computer due to packet delay creating "spiky" timings.
// The imu time stamp is intended to be the sample time of the on-board hardware.
// In the absence of time stamp data from the data[], we can simulate that by