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RetroArch/input/connect/joypad_connection.c
Nathan Strong 5da1cd08ff Unify the HID driver architecture 
== DETAILS
When I first implemented the Wii U HID architecture, I ended up
having to design my own implementation because, at the time, I did
not have a way to read the HID device string to allow the existing
code to successfully detect the gamepad.

After spending some time experimenting, I've figured out how to
do this. And that means I can better align the HID driver with other
platforms.

change summary:

- create a single state structure for all three sub-types of wiiu pads
  (kpad, wpad, and hid)
- eliminate confusing duplicate pad lists
- eliminate confusing duplicate HID pad drivers (ds3, gamecube
  adapter, etc)
- ensure the ds3 driver still works
2021-10-05 09:23:08 -07:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2013-2014 - Jason Fetters
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <string/stdstring.h>
#include "../input_driver.h"
#include "../../verbosity.h"
#include "joypad_connection.h"
static bool joypad_is_end_of_list(joypad_connection_t *pad)
{
return pad
&& !pad->connected
&& !pad->iface
&& (pad->data == (void *)0xdeadbeef);
}
int pad_connection_find_vacant_pad(joypad_connection_t *joyconn)
{
unsigned i;
if (!joyconn)
return -1;
for (i = 0; !joypad_is_end_of_list(&joyconn[i]); i++)
{
if(!joyconn[i].connected)
return i;
}
return -1;
}
static void set_end_of_list(joypad_connection_t *list, unsigned end)
{
joypad_connection_t *entry = (joypad_connection_t *)&list[end];
entry->connected = false;
entry->iface = NULL;
entry->data = (void*)0xdeadbeef;
}
/**
* Since the pad_connection_destroy() call needs to iterate through this
* list, we allocate pads+1 entries and use the extra spot to store a
* marker.
*/
joypad_connection_t *pad_connection_init(unsigned pads)
{
unsigned i;
joypad_connection_t *joyconn;
if(pads > MAX_USERS)
{
RARCH_WARN("[joypad] invalid number of pads requested (%d), using default (%d)\n",
pads, MAX_USERS);
pads = MAX_USERS;
}
joyconn = (joypad_connection_t*)calloc(pads+1, sizeof(joypad_connection_t));
if (!joyconn)
return NULL;
for (i = 0; i < pads; i++)
{
joypad_connection_t *conn = (joypad_connection_t*)&joyconn[i];
conn->connected = false;
conn->iface = NULL;
conn->data = NULL;
}
set_end_of_list(joyconn, pads);
return joyconn;
}
int32_t pad_connection_pad_init(joypad_connection_t *joyconn,
const char *name, uint16_t vid, uint16_t pid,
void *data, hid_driver_t *driver)
{
static struct
{
const char* name;
uint16_t vid;
uint16_t pid;
pad_connection_interface_t *iface;
} pad_map[] =
{
{ "Nintendo RVL-CNT-01", 0, 0, &pad_connection_wii },
{ "Nintendo RVL-CNT-01-UC", 0, 0, &pad_connection_wiiupro },
{ "Wireless Controller", 0, 0, &pad_connection_ps4 },
{ "PLAYSTATION(R)3 Controller", 0, 0, &pad_connection_ps3 },
{ "PLAYSTATION(R)3 Controller", 0, 0, &pad_connection_ps3 },
{ "Generic SNES USB Controller", 0, 0, &pad_connection_snesusb },
{ "Generic NES USB Controller", 0, 0, &pad_connection_nesusb },
{ "Wii U GC Controller Adapter", 0, 0, &pad_connection_wiiugca },
{ "PS2/PSX Controller Adapter", 0, 0, &pad_connection_ps2adapter },
{ "PSX to PS3 Controller Adapter", 0, 0, &pad_connection_psxadapter },
{ "Mayflash DolphinBar", 0, 0, &pad_connection_wii },
{ "Retrode", 0, 0, &pad_connection_retrode },
{ "HORI mini wired PS4", 0, 0, &pad_connection_ps4_hori_mini },
{ 0, 0}
};
joypad_connection_t *s = NULL;
int pad = pad_connection_find_vacant_pad(joyconn);
if (pad == -1)
return -1;
s = &joyconn[pad];
pad_map[0].vid = VID_NINTENDO;
pad_map[0].pid = PID_NINTENDO_PRO;
pad_map[1].vid = VID_NINTENDO;
pad_map[1].pid = PID_NINTENDO_PRO;
pad_map[2].vid = VID_SONY;
pad_map[2].pid = PID_SONY_DS4;
pad_map[3].vid = VID_SONY;
pad_map[3].pid = PID_SONY_DS3;
pad_map[4].vid = VID_PS3_CLONE;
pad_map[4].pid = PID_DS3_CLONE;
pad_map[5].vid = VID_SNES_CLONE;
pad_map[5].pid = PID_SNES_CLONE;
pad_map[6].vid = VID_MICRONTEK;
pad_map[6].pid = PID_MICRONTEK_NES;
pad_map[7].vid = VID_NINTENDO;
pad_map[7].pid = PID_NINTENDO_GCA;
pad_map[8].vid = VID_PCS;
pad_map[8].pid = PID_PCS_PS2PSX;
pad_map[9].vid = VID_PCS;
pad_map[9].pid = PID_PCS_PSX2PS3;
pad_map[10].vid = 1406;
pad_map[10].pid = 774;
pad_map[11].vid = VID_RETRODE;
pad_map[11].pid = PID_RETRODE;
pad_map[12].vid = VID_HORI_1;
pad_map[12].pid = PID_HORI_MINI_WIRED_PS4;
if (s)
{
unsigned i;
const bool has_name = !string_is_empty(name);
for (i = 0; name && pad_map[i].name; i++)
{
const char *name_match = has_name ? strstr(pad_map[i].name, name) : NULL;
/* Never change, Nintendo. */
if(pad_map[i].vid == 1406 && pad_map[i].pid == 816)
{
if(!string_is_equal(pad_map[i].name, name))
continue;
}
#if 0
RARCH_LOG("[connect] %s\n", pad_map[i].name);
RARCH_LOG("[connect] VID: Expected: %04x got: %04x\n",
pad_map[i].vid, vid);
RARCH_LOG("[connect] PID: Expected: %04x got: %04x\n",
pad_map[i].pid, pid);
#endif
if (name_match || (pad_map[i].vid == vid && pad_map[i].pid == pid))
{
RARCH_LOG("Pad was matched to \"%s\". Setting up an interface.\n", name_match);
// RARCH_DBG("Pad was matched to \"%s\". Setting up an interface.\n", name_match);
s->iface = pad_map[i].iface;
s->data = data;
s->connection = s->iface->init(data, pad, driver);
s->connected = true;
#if 0
RARCH_LOG("%s found \n", pad_map[i].name);
#endif
break;
}
#if 0
else
{
RARCH_LOG("%s not found \n", pad_map[i].name);
}
#endif
}
/* We failed to find a matching pad,
* set up one without an interface */
if (!s->connected)
{
RARCH_LOG("Pad was not matched. Setting up without an interface.\n");
// RARCH_DBG("Pad was not matched. Setting up without an interface.\n");
s->iface = NULL;
s->data = data;
s->connected = true;
}
}
return pad;
}
void pad_connection_pad_deinit(joypad_connection_t *joyconn, uint32_t pad)
{
if (!joyconn || !joyconn->connected)
return;
if (joyconn->iface)
{
joyconn->iface->set_rumble(joyconn->connection, RETRO_RUMBLE_STRONG, 0);
joyconn->iface->set_rumble(joyconn->connection, RETRO_RUMBLE_WEAK, 0);
if (joyconn->iface->deinit)
joyconn->iface->deinit(joyconn->connection);
}
joyconn->iface = NULL;
joyconn->connected = false;
joyconn->connection = NULL;
}
void pad_connection_packet(joypad_connection_t *joyconn, uint32_t pad,
uint8_t* data, uint32_t length)
{
if (!joyconn || !joyconn->connected)
return;
if (joyconn->iface && joyconn->connection && joyconn->iface->packet_handler)
joyconn->iface->packet_handler(joyconn->connection, data, length);
}
void pad_connection_get_buttons(joypad_connection_t *joyconn,
unsigned pad, input_bits_t *state)
{
if (joyconn && joyconn->iface)
joyconn->iface->get_buttons(joyconn->connection, state);
else
BIT256_CLEAR_ALL_PTR( state );
}
int16_t pad_connection_get_axis(joypad_connection_t *joyconn,
unsigned idx, unsigned i)
{
if (!joyconn || !joyconn->iface)
return 0;
return joyconn->iface->get_axis(joyconn->connection, i);
}
bool pad_connection_has_interface(joypad_connection_t *joyconn, unsigned pad)
{
if ( joyconn && pad < MAX_USERS
&& joyconn[pad].connected
&& joyconn[pad].iface)
return true;
return false;
}
void pad_connection_destroy(joypad_connection_t *joyconn)
{
unsigned i;
for (i = 0; !joypad_is_end_of_list(&joyconn[i]); i ++)
pad_connection_pad_deinit(&joyconn[i], i);
free(joyconn);
}
bool pad_connection_rumble(joypad_connection_t *joyconn,
unsigned pad, enum retro_rumble_effect effect, uint16_t strength)
{
if (!joyconn->connected)
return false;
if (!joyconn->iface || !joyconn->iface->set_rumble)
return false;
joyconn->iface->set_rumble(joyconn->connection, effect, strength);
return true;
}
const char* pad_connection_get_name(joypad_connection_t *joyconn, unsigned pad)
{
if (!joyconn || !joyconn->iface || !joyconn->iface->get_name)
return NULL;
return joyconn->iface->get_name(joyconn->connection);
}
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