mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-11 10:13:53 +00:00
331 lines
8.7 KiB
C
331 lines
8.7 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2013-2014 - Jason Fetters
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* Copyright (C) 2011-2017 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <boolean.h>
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#include "joypad_connection.h"
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#include "../input_defines.h"
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#define GCA_MAX_PAD 4
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#define GCA_TYPE_DEVICE 0x00
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#define GCA_TYPE_PAD 0x01
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#define GCA_PORT_INITIALIZING 0x00
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#define GCA_PORT_POWERED 0x04
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#define GCA_PORT_CONNECTED 0x10
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#define GCA_WAVEBIRD_CONNECTED 0x22
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typedef struct hidpad_wiiugca_pad_data gca_pad_data_t;
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typedef struct hidpad_wiiugca_data gca_device_data_t;
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struct hidpad_wiiugca_pad_data
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{
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uint8_t datatype;
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gca_device_data_t *device_data;
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joypad_connection_t *joypad;
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int pad_index;
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uint32_t buttons;
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int16_t analog[3][2];
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uint8_t data[9];
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};
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struct hidpad_wiiugca_data
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{
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uint8_t datatype;
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void *handle;
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hid_driver_t *driver;
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char connected[GCA_MAX_PAD];
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gca_pad_data_t pad_data[GCA_MAX_PAD];
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uint8_t data[64];
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};
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const char *GAMECUBE_PAD = "GameCube controller";
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const char *WAVEBIRD_PAD = "WaveBird controller";
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const char *DEVICE_NAME = "Wii U GC Controller Adapter";
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static void* hidpad_wiiugca_init(void *data, uint32_t slot, hid_driver_t *driver)
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{
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#ifdef WIIU
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static uint8_t magic_data[] = {0x13 }; /* Special command to enable reading */
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#else
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static uint8_t magic_data[] = {0x01, 0x13}; /* Special command to enable reading */
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#endif
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int i;
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gca_device_data_t * device = (gca_device_data_t *)calloc(1, sizeof(gca_device_data_t));
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if (!device)
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return NULL;
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if (!data)
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{
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free(device);
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return NULL;
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}
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device->handle = data;
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for (i = 0; i < GCA_MAX_PAD; i++)
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{
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device->pad_data[i].datatype = GCA_TYPE_PAD;
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device->pad_data[i].device_data = device;
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device->pad_data[i].joypad = NULL;
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device->pad_data[i].pad_index = i;
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}
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device->driver = driver;
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device->driver->send_control(device->handle, magic_data, sizeof(magic_data));
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return device;
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}
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static void hidpad_wiiugca_deinit(void *device_data)
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{
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gca_device_data_t *device = (gca_device_data_t *)device_data;
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if (device)
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free(device);
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}
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static void hidpad_wiiugca_get_buttons(void *pad_data, input_bits_t *state)
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{
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gca_pad_data_t *pad = (gca_pad_data_t *)pad_data;
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if (pad)
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{
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if (pad->datatype == GCA_TYPE_PAD)
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{
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BITS_COPY16_PTR(state, pad->buttons);
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}
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else
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{
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gca_device_data_t *device = (gca_device_data_t *)pad_data;
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BITS_COPY16_PTR(state, device->pad_data[0].buttons);
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}
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}
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else
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{
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BIT256_CLEAR_ALL_PTR(state);
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}
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}
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static int16_t hidpad_wiiugca_get_axis(void *pad_data, unsigned axis)
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{
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axis_data axis_data;
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gca_pad_data_t *pad = (gca_pad_data_t *)pad_data;
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gca_device_data_t *device = (gca_device_data_t *)pad_data;
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gamepad_read_axis_data(axis, &axis_data);
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if (!pad || axis_data.axis >= 4)
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return 0;
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if (pad->datatype == GCA_TYPE_PAD)
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return gamepad_get_axis_value_raw(pad->analog, &axis_data, false);
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return gamepad_get_axis_value(device->pad_data[0].analog, &axis_data);
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}
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static void update_button_state(gca_pad_data_t *pad)
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{
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uint32_t i, pressed_keys;
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static const uint32_t button_mapping[12] =
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{
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RETRO_DEVICE_ID_JOYPAD_A,
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RETRO_DEVICE_ID_JOYPAD_B,
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RETRO_DEVICE_ID_JOYPAD_X,
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RETRO_DEVICE_ID_JOYPAD_Y,
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RETRO_DEVICE_ID_JOYPAD_LEFT,
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RETRO_DEVICE_ID_JOYPAD_RIGHT,
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RETRO_DEVICE_ID_JOYPAD_DOWN,
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RETRO_DEVICE_ID_JOYPAD_UP,
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RETRO_DEVICE_ID_JOYPAD_START,
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RETRO_DEVICE_ID_JOYPAD_SELECT,
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RETRO_DEVICE_ID_JOYPAD_R,
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RETRO_DEVICE_ID_JOYPAD_L,
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};
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if (!pad)
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return;
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pressed_keys = pad->data[1] | (pad->data[2] << 8);
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pad->buttons = 0;
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for (i = 0; i < 12; i++)
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pad->buttons |= (pressed_keys & (1 << i)) ?
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(1 << button_mapping[i]) : 0;
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}
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static void update_analog_state(gca_pad_data_t *pad)
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{
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int pad_axis;
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/* GameCube analog axis are 8-bit unsigned, where 128/128 is center.
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* So, we subtract 128 to get a signed, 0-based value and then mulitply
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* by 256 to get the 16-bit range RetroArch expects. */
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for (pad_axis = 0; pad_axis < 4; pad_axis++)
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{
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unsigned axis = (pad_axis % 2) ? 0 : 1;
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unsigned stick = pad_axis / 2;
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int16_t interpolated = pad->data[3 + pad_axis];
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/* libretro requires "up" to be negative, so we invert the y axis */
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interpolated = axis
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? ((interpolated - 128) * 256)
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: ((interpolated - 128) * -256);
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pad->analog[stick][axis] = interpolated;
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}
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}
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static void hidpad_wiiugca_pad_packet_handler(gca_pad_data_t *pad, uint8_t *packet, size_t size)
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{
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if (size > 9)
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return;
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memcpy(pad->data, packet, size);
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update_button_state(pad);
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update_analog_state(pad);
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}
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static void hidpad_wiiugca_packet_handler(void *device_data, uint8_t *packet, uint16_t size)
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{
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uint32_t i;
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gca_device_data_t *device = (gca_device_data_t *)device_data;
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if (!device)
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return;
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memcpy(device->data, packet, size);
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for (i = 1; i < 37; i += 9)
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{
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int port = i / 9;
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unsigned char port_connected = device->data[i];
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if (port_connected > GCA_PORT_POWERED)
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{
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device->connected[port] = port_connected;
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hidpad_wiiugca_pad_packet_handler(&device->pad_data[port], &device->data[i], 9);
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}
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else
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device->connected[port] = 0;
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}
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}
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static void hidpad_wiiugca_set_rumble(void *data,
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enum retro_rumble_effect effect, uint16_t strength) { }
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const char *hidpad_wiiugca_get_name(void *pad_data)
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{
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gca_pad_data_t *pad = (gca_pad_data_t *)pad_data;
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if (!pad || pad->datatype != GCA_TYPE_PAD)
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return DEVICE_NAME;
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switch(pad->device_data->connected[pad->pad_index])
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{
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case 0:
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return DEVICE_NAME;
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case GCA_WAVEBIRD_CONNECTED:
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return WAVEBIRD_PAD;
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default:
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break;
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}
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/* For now we return a single static name */
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return GAMECUBE_PAD;
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}
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static int32_t hidpad_wiiugca_button(void *pad_data, uint16_t joykey)
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{
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gca_pad_data_t *pad = (gca_pad_data_t *)pad_data;
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if (!pad)
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return 0;
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if (pad->datatype != GCA_TYPE_PAD)
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{
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gca_device_data_t *device = (gca_device_data_t *)pad_data;
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pad = &device->pad_data[0];
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}
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if (!pad->device_data || joykey > 31 || !pad->joypad)
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return 0;
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return pad->buttons & (1 << joykey);
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}
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static void *hidpad_wiiugca_pad_init(void *device_data, int pad_index, joypad_connection_t *joypad)
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{
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gca_device_data_t *device = (gca_device_data_t *)device_data;
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if (!device || pad_index < 0 || pad_index >= GCA_MAX_PAD || !joypad || device->pad_data[pad_index].joypad || !device->connected[pad_index])
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return NULL;
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device->pad_data[pad_index].joypad = joypad;
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return &device->pad_data[pad_index];
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}
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static void hidpad_wiiugca_pad_deinit(void *pad_data)
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{
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gca_pad_data_t *pad = (gca_pad_data_t *)pad_data;
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if (pad)
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pad->joypad = NULL;
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}
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static int8_t hidpad_wiiugca_status(void *device_data, int pad_index)
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{
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int8_t result = 0;
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gca_device_data_t *device = (gca_device_data_t *)device_data;
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if (!device || pad_index < 0 || pad_index >= GCA_MAX_PAD)
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return 0;
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if (device->connected[pad_index])
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result |= PAD_CONNECT_READY;
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if (device->pad_data[pad_index].joypad)
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result |= PAD_CONNECT_BOUND;
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return result;
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}
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static joypad_connection_t *hidpad_wiiugca_joypad(void *device_data, int pad_index)
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{
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gca_device_data_t *device = (gca_device_data_t *)device_data;
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if (!device || pad_index < 0 || pad_index >= GCA_MAX_PAD)
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return 0;
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return device->pad_data[pad_index].joypad;
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}
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pad_connection_interface_t pad_connection_wiiugca = {
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hidpad_wiiugca_init,
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hidpad_wiiugca_deinit,
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hidpad_wiiugca_packet_handler,
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hidpad_wiiugca_set_rumble,
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hidpad_wiiugca_get_buttons,
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hidpad_wiiugca_get_axis,
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hidpad_wiiugca_get_name,
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hidpad_wiiugca_button,
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true,
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GCA_MAX_PAD,
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hidpad_wiiugca_pad_init,
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hidpad_wiiugca_pad_deinit,
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hidpad_wiiugca_status,
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hidpad_wiiugca_joypad,
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};
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