From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- .../SDL-3.2.8/src/joystick/psp/SDL_sysjoystick.c | 277 +++++++++++++++++++++ 1 file changed, 277 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/joystick/psp/SDL_sysjoystick.c (limited to 'contrib/SDL-3.2.8/src/joystick/psp') diff --git a/contrib/SDL-3.2.8/src/joystick/psp/SDL_sysjoystick.c b/contrib/SDL-3.2.8/src/joystick/psp/SDL_sysjoystick.c new file mode 100644 index 0000000..8a0154c --- /dev/null +++ b/contrib/SDL-3.2.8/src/joystick/psp/SDL_sysjoystick.c @@ -0,0 +1,277 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "SDL_internal.h" + +#ifdef SDL_JOYSTICK_PSP + +// This is the PSP implementation of the SDL joystick API +#include + +#include // For the definition of NULL +#include + +#include "../SDL_sysjoystick.h" +#include "../SDL_joystick_c.h" + +// Current pad state +static SceCtrlData pad = { .Lx = 0, .Ly = 0, .Buttons = 0 }; +static const enum PspCtrlButtons button_map[] = { + PSP_CTRL_TRIANGLE, PSP_CTRL_CIRCLE, PSP_CTRL_CROSS, PSP_CTRL_SQUARE, + PSP_CTRL_LTRIGGER, PSP_CTRL_RTRIGGER, + PSP_CTRL_DOWN, PSP_CTRL_LEFT, PSP_CTRL_UP, PSP_CTRL_RIGHT, + PSP_CTRL_SELECT, PSP_CTRL_START, PSP_CTRL_HOME, PSP_CTRL_HOLD +}; +static int analog_map[256]; // Map analog inputs to -32768 -> 32767 + +// 4 points define the bezier-curve. +static SDL_Point a = { 0, 0 }; +static SDL_Point b = { 50, 0 }; +static SDL_Point c = { 78, 32767 }; +static SDL_Point d = { 128, 32767 }; + +// simple linear interpolation between two points +static SDL_INLINE void lerp(SDL_Point *dest, const SDL_Point *pt_a, const SDL_Point *pt_b, float t) +{ + dest->x = pt_a->x + (int)((pt_b->x - pt_a->x) * t); + dest->y = pt_a->y + (int)((pt_b->y - pt_a->y) * t); +} + +// evaluate a point on a bezier-curve. t goes from 0 to 1.0 +static int calc_bezier_y(float t) +{ + SDL_Point ab, bc, cd, abbc, bccd, dest; + lerp(&ab, &a, &b, t); // point between a and b + lerp(&bc, &b, &c, t); // point between b and c + lerp(&cd, &c, &d, t); // point between c and d + lerp(&abbc, &ab, &bc, t); // point between ab and bc + lerp(&bccd, &bc, &cd, t); // point between bc and cd + lerp(&dest, &abbc, &bccd, t); // point on the bezier-curve + return dest.y; +} + +/* Function to scan the system for joysticks. + * Joystick 0 should be the system default joystick. + * It should return number of joysticks, or -1 on an unrecoverable fatal error. + */ +static bool PSP_JoystickInit(void) +{ + int i; + + // Setup input + sceCtrlSetSamplingCycle(0); + sceCtrlSetSamplingMode(PSP_CTRL_MODE_ANALOG); + + /* Create an accurate map from analog inputs (0 to 255) + to SDL joystick positions (-32768 to 32767) */ + for (i = 0; i < 128; i++) { + float t = (float)i / 127.0f; + analog_map[i + 128] = calc_bezier_y(t); + analog_map[127 - i] = -1 * analog_map[i + 128]; + } + + SDL_PrivateJoystickAdded(1); + + return 1; +} + +static int PSP_JoystickGetCount(void) +{ + return 1; +} + +static void PSP_JoystickDetect(void) +{ +} + +static bool PSP_JoystickIsDevicePresent(Uint16 vendor_id, Uint16 product_id, Uint16 version, const char *name) +{ + // We don't override any other drivers + return false; +} + +// Function to get the device-dependent name of a joystick +static const char *PSP_JoystickGetDeviceName(int device_index) +{ + if (device_index == 0) { + return "PSP builtin joypad"; + } + + SDL_SetError("No joystick available with that index"); + return NULL; +} + +static const char *PSP_JoystickGetDevicePath(int index) +{ + return NULL; +} + +static int PSP_JoystickGetDeviceSteamVirtualGamepadSlot(int device_index) +{ + return -1; +} + +static int PSP_JoystickGetDevicePlayerIndex(int device_index) +{ + return -1; +} + +static void PSP_JoystickSetDevicePlayerIndex(int device_index, int player_index) +{ +} + +static SDL_GUID PSP_JoystickGetDeviceGUID(int device_index) +{ + // the GUID is just the name for now + const char *name = PSP_JoystickGetDeviceName(device_index); + return SDL_CreateJoystickGUIDForName(name); +} + +// Function to perform the mapping from device index to the instance id for this index +static SDL_JoystickID PSP_JoystickGetDeviceInstanceID(int device_index) +{ + return device_index + 1; +} + +/* Function to open a joystick for use. + The joystick to open is specified by the device index. + This should fill the nbuttons and naxes fields of the joystick structure. + It returns 0, or -1 if there is an error. + */ +static bool PSP_JoystickOpen(SDL_Joystick *joystick, int device_index) +{ + joystick->nbuttons = SDL_arraysize(button_map); + joystick->naxes = 2; + joystick->nhats = 0; + + return true; +} + +static bool PSP_JoystickRumble(SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble) +{ + return SDL_Unsupported(); +} + +static bool PSP_JoystickRumbleTriggers(SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble) +{ + return SDL_Unsupported(); +} + +static bool PSP_JoystickSetLED(SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue) +{ + return SDL_Unsupported(); +} + +static bool PSP_JoystickSendEffect(SDL_Joystick *joystick, const void *data, int size) +{ + return SDL_Unsupported(); +} + +static bool PSP_JoystickSetSensorsEnabled(SDL_Joystick *joystick, bool enabled) +{ + return SDL_Unsupported(); +} + +/* Function to update the state of a joystick - called as a device poll. + * This function shouldn't update the joystick structure directly, + * but instead should call SDL_PrivateJoystick*() to deliver events + * and update joystick device state. + */ +static void PSP_JoystickUpdate(SDL_Joystick *joystick) +{ + int i; + enum PspCtrlButtons buttons; + enum PspCtrlButtons changed; + unsigned char x, y; + static enum PspCtrlButtons old_buttons = 0; + static unsigned char old_x = 0, old_y = 0; + Uint64 timestamp = SDL_GetTicksNS(); + + if (sceCtrlPeekBufferPositive(&pad, 1) <= 0) { + return; + } + buttons = pad.Buttons; + x = pad.Lx; + y = pad.Ly; + + // Axes + if (old_x != x) { + SDL_SendJoystickAxis(timestamp, joystick, 0, analog_map[x]); + old_x = x; + } + if (old_y != y) { + SDL_SendJoystickAxis(timestamp, joystick, 1, analog_map[y]); + old_y = y; + } + + // Buttons + changed = old_buttons ^ buttons; + old_buttons = buttons; + if (changed) { + for (i = 0; i < SDL_arraysize(button_map); i++) { + if (changed & button_map[i]) { + bool down = ((buttons & button_map[i]) != 0); + SDL_SendJoystickButton(timestamp, + joystick, i, down); + } + } + } +} + +// Function to close a joystick after use +static void PSP_JoystickClose(SDL_Joystick *joystick) +{ +} + +// Function to perform any system-specific joystick related cleanup +static void PSP_JoystickQuit(void) +{ +} + +static bool PSP_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out) +{ + return false; +} + +SDL_JoystickDriver SDL_PSP_JoystickDriver = { + PSP_JoystickInit, + PSP_JoystickGetCount, + PSP_JoystickDetect, + PSP_JoystickIsDevicePresent, + PSP_JoystickGetDeviceName, + PSP_JoystickGetDevicePath, + PSP_JoystickGetDeviceSteamVirtualGamepadSlot, + PSP_JoystickGetDevicePlayerIndex, + PSP_JoystickSetDevicePlayerIndex, + PSP_JoystickGetDeviceGUID, + PSP_JoystickGetDeviceInstanceID, + PSP_JoystickOpen, + PSP_JoystickRumble, + PSP_JoystickRumbleTriggers, + PSP_JoystickSetLED, + PSP_JoystickSendEffect, + PSP_JoystickSetSensorsEnabled, + PSP_JoystickUpdate, + PSP_JoystickClose, + PSP_JoystickQuit, + PSP_JoystickGetGamepadMapping +}; + +#endif // SDL_JOYSTICK_PSP -- cgit v1.2.3