| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> |
| |
| 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_ANDROID |
| |
| #include <stdio.h> /* For the definition of NULL */ |
| #include "SDL_error.h" |
| #include "SDL_events.h" |
| |
| #include "SDL_joystick.h" |
| #include "SDL_hints.h" |
| #include "SDL_assert.h" |
| #include "SDL_timer.h" |
| #include "SDL_log.h" |
| #include "SDL_sysjoystick_c.h" |
| #include "../SDL_joystick_c.h" |
| #include "../../core/android/SDL_android.h" |
| |
| #include "android/keycodes.h" |
| |
| /* As of platform android-14, android/keycodes.h is missing these defines */ |
| #ifndef AKEYCODE_BUTTON_1 |
| #define AKEYCODE_BUTTON_1 188 |
| #define AKEYCODE_BUTTON_2 189 |
| #define AKEYCODE_BUTTON_3 190 |
| #define AKEYCODE_BUTTON_4 191 |
| #define AKEYCODE_BUTTON_5 192 |
| #define AKEYCODE_BUTTON_6 193 |
| #define AKEYCODE_BUTTON_7 194 |
| #define AKEYCODE_BUTTON_8 195 |
| #define AKEYCODE_BUTTON_9 196 |
| #define AKEYCODE_BUTTON_10 197 |
| #define AKEYCODE_BUTTON_11 198 |
| #define AKEYCODE_BUTTON_12 199 |
| #define AKEYCODE_BUTTON_13 200 |
| #define AKEYCODE_BUTTON_14 201 |
| #define AKEYCODE_BUTTON_15 202 |
| #define AKEYCODE_BUTTON_16 203 |
| #endif |
| |
| #define ANDROID_ACCELEROMETER_NAME "Android Accelerometer" |
| #define ANDROID_ACCELEROMETER_DEVICE_ID INT_MIN |
| #define ANDROID_MAX_NBUTTONS 36 |
| |
| static SDL_joylist_item * JoystickByDeviceId(int device_id); |
| |
| static SDL_joylist_item *SDL_joylist = NULL; |
| static SDL_joylist_item *SDL_joylist_tail = NULL; |
| static int numjoysticks = 0; |
| static int instance_counter = 0; |
| |
| |
| /* Function to convert Android keyCodes into SDL ones. |
| * This code manipulation is done to get a sequential list of codes. |
| * FIXME: This is only suited for the case where we use a fixed number of buttons determined by ANDROID_MAX_NBUTTONS |
| */ |
| static int |
| keycode_to_SDL(int keycode) |
| { |
| /* FIXME: If this function gets too unwiedly in the future, replace with a lookup table */ |
| int button = 0; |
| switch(keycode) |
| { |
| /* Some gamepad buttons (API 9) */ |
| case AKEYCODE_BUTTON_A: |
| button = SDL_CONTROLLER_BUTTON_A; |
| break; |
| case AKEYCODE_BUTTON_B: |
| button = SDL_CONTROLLER_BUTTON_B; |
| break; |
| case AKEYCODE_BUTTON_X: |
| button = SDL_CONTROLLER_BUTTON_X; |
| break; |
| case AKEYCODE_BUTTON_Y: |
| button = SDL_CONTROLLER_BUTTON_Y; |
| break; |
| case AKEYCODE_BUTTON_L1: |
| button = SDL_CONTROLLER_BUTTON_LEFTSHOULDER; |
| break; |
| case AKEYCODE_BUTTON_R1: |
| button = SDL_CONTROLLER_BUTTON_RIGHTSHOULDER; |
| break; |
| case AKEYCODE_BUTTON_THUMBL: |
| button = SDL_CONTROLLER_BUTTON_LEFTSTICK; |
| break; |
| case AKEYCODE_BUTTON_THUMBR: |
| button = SDL_CONTROLLER_BUTTON_RIGHTSTICK; |
| break; |
| case AKEYCODE_BUTTON_START: |
| button = SDL_CONTROLLER_BUTTON_START; |
| break; |
| case AKEYCODE_BUTTON_SELECT: |
| button = SDL_CONTROLLER_BUTTON_BACK; |
| break; |
| case AKEYCODE_BUTTON_MODE: |
| button = SDL_CONTROLLER_BUTTON_GUIDE; |
| break; |
| case AKEYCODE_BUTTON_L2: |
| button = SDL_CONTROLLER_BUTTON_MAX; /* Not supported by GameController */ |
| break; |
| case AKEYCODE_BUTTON_R2: |
| button = SDL_CONTROLLER_BUTTON_MAX+1; /* Not supported by GameController */ |
| break; |
| case AKEYCODE_BUTTON_C: |
| button = SDL_CONTROLLER_BUTTON_MAX+2; /* Not supported by GameController */ |
| break; |
| case AKEYCODE_BUTTON_Z: |
| button = SDL_CONTROLLER_BUTTON_MAX+3; /* Not supported by GameController */ |
| break; |
| |
| /* D-Pad key codes (API 1) */ |
| case AKEYCODE_DPAD_UP: |
| button = SDL_CONTROLLER_BUTTON_DPAD_UP; |
| break; |
| case AKEYCODE_DPAD_DOWN: |
| button = SDL_CONTROLLER_BUTTON_DPAD_DOWN; |
| break; |
| case AKEYCODE_DPAD_LEFT: |
| button = SDL_CONTROLLER_BUTTON_DPAD_LEFT; |
| break; |
| case AKEYCODE_DPAD_RIGHT: |
| button = SDL_CONTROLLER_BUTTON_DPAD_RIGHT; |
| break; |
| case AKEYCODE_DPAD_CENTER: |
| button = SDL_CONTROLLER_BUTTON_MAX+4; /* Not supported by GameController */ |
| break; |
| |
| /* More gamepad buttons (API 12), these get mapped to 20...35*/ |
| case AKEYCODE_BUTTON_1: |
| case AKEYCODE_BUTTON_2: |
| case AKEYCODE_BUTTON_3: |
| case AKEYCODE_BUTTON_4: |
| case AKEYCODE_BUTTON_5: |
| case AKEYCODE_BUTTON_6: |
| case AKEYCODE_BUTTON_7: |
| case AKEYCODE_BUTTON_8: |
| case AKEYCODE_BUTTON_9: |
| case AKEYCODE_BUTTON_10: |
| case AKEYCODE_BUTTON_11: |
| case AKEYCODE_BUTTON_12: |
| case AKEYCODE_BUTTON_13: |
| case AKEYCODE_BUTTON_14: |
| case AKEYCODE_BUTTON_15: |
| case AKEYCODE_BUTTON_16: |
| button = keycode - AKEYCODE_BUTTON_1 + SDL_CONTROLLER_BUTTON_MAX + 5; |
| break; |
| |
| default: |
| return -1; |
| break; |
| } |
| |
| /* This is here in case future generations, probably with six fingers per hand, |
| * happily add new cases up above and forget to update the max number of buttons. |
| */ |
| SDL_assert(button < ANDROID_MAX_NBUTTONS); |
| return button; |
| |
| } |
| |
| int |
| Android_OnPadDown(int device_id, int keycode) |
| { |
| SDL_joylist_item *item; |
| int button = keycode_to_SDL(keycode); |
| if (button >= 0) { |
| item = JoystickByDeviceId(device_id); |
| if (item && item->joystick) { |
| SDL_PrivateJoystickButton(item->joystick, button , SDL_PRESSED); |
| } |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| int |
| Android_OnPadUp(int device_id, int keycode) |
| { |
| SDL_joylist_item *item; |
| int button = keycode_to_SDL(keycode); |
| if (button >= 0) { |
| item = JoystickByDeviceId(device_id); |
| if (item && item->joystick) { |
| SDL_PrivateJoystickButton(item->joystick, button, SDL_RELEASED); |
| } |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| int |
| Android_OnJoy(int device_id, int axis, float value) |
| { |
| /* Android gives joy info normalized as [-1.0, 1.0] or [0.0, 1.0] */ |
| SDL_joylist_item *item = JoystickByDeviceId(device_id); |
| if (item && item->joystick) { |
| SDL_PrivateJoystickAxis(item->joystick, axis, (Sint16) (32767.*value) ); |
| } |
| |
| return 0; |
| } |
| |
| int |
| Android_OnHat(int device_id, int hat_id, int x, int y) |
| { |
| const Uint8 position_map[3][3] = { |
| {SDL_HAT_LEFTUP, SDL_HAT_UP, SDL_HAT_RIGHTUP}, |
| {SDL_HAT_LEFT, SDL_HAT_CENTERED, SDL_HAT_RIGHT}, |
| {SDL_HAT_LEFTDOWN, SDL_HAT_DOWN, SDL_HAT_RIGHTDOWN} |
| }; |
| |
| if (x >= -1 && x <=1 && y >= -1 && y <= 1) { |
| SDL_joylist_item *item = JoystickByDeviceId(device_id); |
| if (item && item->joystick) { |
| SDL_PrivateJoystickHat(item->joystick, hat_id, position_map[y+1][x+1] ); |
| } |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| |
| int |
| Android_AddJoystick(int device_id, const char *name, SDL_bool is_accelerometer, int nbuttons, int naxes, int nhats, int nballs) |
| { |
| SDL_JoystickGUID guid; |
| SDL_joylist_item *item; |
| |
| if(JoystickByDeviceId(device_id) != NULL || name == NULL) { |
| return -1; |
| } |
| |
| /* the GUID is just the first 16 chars of the name for now */ |
| SDL_zero( guid ); |
| SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) ); |
| |
| item = (SDL_joylist_item *) SDL_malloc(sizeof (SDL_joylist_item)); |
| if (item == NULL) { |
| return -1; |
| } |
| |
| SDL_zerop(item); |
| item->guid = guid; |
| item->device_id = device_id; |
| item->name = SDL_strdup(name); |
| if ( item->name == NULL ) { |
| SDL_free(item); |
| return -1; |
| } |
| |
| item->is_accelerometer = is_accelerometer; |
| if (nbuttons > -1) { |
| item->nbuttons = nbuttons; |
| } |
| else { |
| item->nbuttons = ANDROID_MAX_NBUTTONS; |
| } |
| item->naxes = naxes; |
| item->nhats = nhats; |
| item->nballs = nballs; |
| item->device_instance = instance_counter++; |
| if (SDL_joylist_tail == NULL) { |
| SDL_joylist = SDL_joylist_tail = item; |
| } else { |
| SDL_joylist_tail->next = item; |
| SDL_joylist_tail = item; |
| } |
| |
| /* Need to increment the joystick count before we post the event */ |
| ++numjoysticks; |
| |
| SDL_PrivateJoystickAdded(numjoysticks - 1); |
| |
| #ifdef DEBUG_JOYSTICK |
| SDL_Log("Added joystick %s with device_id %d", name, device_id); |
| #endif |
| |
| return numjoysticks; |
| } |
| |
| int |
| Android_RemoveJoystick(int device_id) |
| { |
| SDL_joylist_item *item = SDL_joylist; |
| SDL_joylist_item *prev = NULL; |
| |
| /* Don't call JoystickByDeviceId here or there'll be an infinite loop! */ |
| while (item != NULL) { |
| if (item->device_id == device_id) { |
| break; |
| } |
| prev = item; |
| item = item->next; |
| } |
| |
| if (item == NULL) { |
| return -1; |
| } |
| |
| if (item->joystick) { |
| item->joystick->hwdata = NULL; |
| } |
| |
| if (prev != NULL) { |
| prev->next = item->next; |
| } else { |
| SDL_assert(SDL_joylist == item); |
| SDL_joylist = item->next; |
| } |
| if (item == SDL_joylist_tail) { |
| SDL_joylist_tail = prev; |
| } |
| |
| /* Need to decrement the joystick count before we post the event */ |
| --numjoysticks; |
| |
| SDL_PrivateJoystickRemoved(item->device_instance); |
| |
| #ifdef DEBUG_JOYSTICK |
| SDL_Log("Removed joystick with device_id %d", device_id); |
| #endif |
| |
| SDL_free(item->name); |
| SDL_free(item); |
| return numjoysticks; |
| } |
| |
| |
| int |
| SDL_SYS_JoystickInit(void) |
| { |
| SDL_SYS_JoystickDetect(); |
| |
| if (SDL_GetHintBoolean(SDL_HINT_ACCELEROMETER_AS_JOYSTICK, SDL_TRUE)) { |
| /* Default behavior, accelerometer as joystick */ |
| Android_AddJoystick(ANDROID_ACCELEROMETER_DEVICE_ID, ANDROID_ACCELEROMETER_NAME, SDL_TRUE, 0, 3, 0, 0); |
| } |
| |
| return (numjoysticks); |
| |
| } |
| |
| int SDL_SYS_NumJoysticks() |
| { |
| return numjoysticks; |
| } |
| |
| void SDL_SYS_JoystickDetect() |
| { |
| /* Support for device connect/disconnect is API >= 16 only, |
| * so we poll every three seconds |
| * Ref: http://developer.android.com/reference/android/hardware/input/InputManager.InputDeviceListener.html |
| */ |
| static Uint32 timeout = 0; |
| if (SDL_TICKS_PASSED(SDL_GetTicks(), timeout)) { |
| timeout = SDL_GetTicks() + 3000; |
| Android_JNI_PollInputDevices(); |
| } |
| } |
| |
| static SDL_joylist_item * |
| JoystickByDevIndex(int device_index) |
| { |
| SDL_joylist_item *item = SDL_joylist; |
| |
| if ((device_index < 0) || (device_index >= numjoysticks)) { |
| return NULL; |
| } |
| |
| while (device_index > 0) { |
| SDL_assert(item != NULL); |
| device_index--; |
| item = item->next; |
| } |
| |
| return item; |
| } |
| |
| static SDL_joylist_item * |
| JoystickByDeviceId(int device_id) |
| { |
| SDL_joylist_item *item = SDL_joylist; |
| |
| while (item != NULL) { |
| if (item->device_id == device_id) { |
| return item; |
| } |
| item = item->next; |
| } |
| |
| /* Joystick not found, try adding it */ |
| SDL_SYS_JoystickDetect(); |
| |
| while (item != NULL) { |
| if (item->device_id == device_id) { |
| return item; |
| } |
| item = item->next; |
| } |
| |
| return NULL; |
| } |
| |
| /* Function to get the device-dependent name of a joystick */ |
| const char * |
| SDL_SYS_JoystickNameForDeviceIndex(int device_index) |
| { |
| return JoystickByDevIndex(device_index)->name; |
| } |
| |
| /* Function to perform the mapping from device index to the instance id for this index */ |
| SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index) |
| { |
| return JoystickByDevIndex(device_index)->device_instance; |
| } |
| |
| /* 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. |
| */ |
| int |
| SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int device_index) |
| { |
| SDL_joylist_item *item = JoystickByDevIndex(device_index); |
| |
| if (item == NULL ) { |
| return SDL_SetError("No such device"); |
| } |
| |
| if (item->joystick != NULL) { |
| return SDL_SetError("Joystick already opened"); |
| } |
| |
| joystick->instance_id = item->device_instance; |
| joystick->hwdata = (struct joystick_hwdata *) item; |
| item->joystick = joystick; |
| joystick->nhats = item->nhats; |
| joystick->nballs = item->nballs; |
| joystick->nbuttons = item->nbuttons; |
| joystick->naxes = item->naxes; |
| |
| return (0); |
| } |
| |
| /* Function to determine if this joystick is attached to the system right now */ |
| SDL_bool SDL_SYS_JoystickAttached(SDL_Joystick *joystick) |
| { |
| return joystick->hwdata != NULL; |
| } |
| |
| void |
| SDL_SYS_JoystickUpdate(SDL_Joystick * joystick) |
| { |
| int i; |
| Sint16 value; |
| float values[3]; |
| SDL_joylist_item *item = SDL_joylist; |
| |
| while (item) { |
| if (item->is_accelerometer) { |
| if (item->joystick) { |
| if (Android_JNI_GetAccelerometerValues(values)) { |
| for ( i = 0; i < 3; i++ ) { |
| if (values[i] > 1.0f) { |
| values[i] = 1.0f; |
| } else if (values[i] < -1.0f) { |
| values[i] = -1.0f; |
| } |
| |
| value = (Sint16)(values[i] * 32767.0f); |
| SDL_PrivateJoystickAxis(item->joystick, i, value); |
| } |
| } |
| } |
| break; |
| } |
| item = item->next; |
| } |
| } |
| |
| /* Function to close a joystick after use */ |
| void |
| SDL_SYS_JoystickClose(SDL_Joystick * joystick) |
| { |
| SDL_joylist_item *item = (SDL_joylist_item *) joystick->hwdata; |
| if (item) { |
| item->joystick = NULL; |
| } |
| } |
| |
| /* Function to perform any system-specific joystick related cleanup */ |
| void |
| SDL_SYS_JoystickQuit(void) |
| { |
| SDL_joylist_item *item = NULL; |
| SDL_joylist_item *next = NULL; |
| |
| for (item = SDL_joylist; item; item = next) { |
| next = item->next; |
| SDL_free(item->name); |
| SDL_free(item); |
| } |
| |
| SDL_joylist = SDL_joylist_tail = NULL; |
| |
| numjoysticks = 0; |
| instance_counter = 0; |
| } |
| |
| SDL_JoystickGUID SDL_SYS_JoystickGetDeviceGUID( int device_index ) |
| { |
| return JoystickByDevIndex(device_index)->guid; |
| } |
| |
| SDL_JoystickGUID SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick) |
| { |
| SDL_JoystickGUID guid; |
| |
| if (joystick->hwdata != NULL) { |
| return ((SDL_joylist_item*)joystick->hwdata)->guid; |
| } |
| |
| SDL_zero(guid); |
| return guid; |
| } |
| |
| #endif /* SDL_JOYSTICK_ANDROID */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
