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https://github.com/libretro/RetroArch
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(udev_joypad.c) Cleanups
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libretroadmin
parent
96d39a78cc
commit
42a0618812
@ -335,28 +335,16 @@ static void udev_check_device(struct udev_device *dev, const char *path)
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}
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}
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pad = udev_find_vacant_pad();
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if (pad < 0)
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if ((pad = udev_find_vacant_pad()) < 0)
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return;
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fd = udev_open_joystick(path);
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if (fd < 0)
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if ((fd = udev_open_joystick(path)) < 0)
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return;
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ret = udev_add_pad(dev, pad, fd, path);
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switch (ret)
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if (udev_add_pad(dev, pad, fd, path) == -1)
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{
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case -1:
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RARCH_ERR("[udev]: Failed to add pad: %s.\n", path);
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close(fd);
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break;
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case 1:
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/* Pad was autoconfigured. */
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break;
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case 0:
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default:
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break;
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RARCH_ERR("[udev]: Failed to add pad: %s.\n", path);
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close(fd);
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}
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}
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@ -412,7 +400,6 @@ static void udev_joypad_destroy(void)
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static bool udev_set_rumble(unsigned i,
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enum retro_rumble_effect effect, uint16_t strength)
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{
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int old_effect;
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uint16_t old_strength;
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struct udev_joypad *pad = (struct udev_joypad*)&udev_pads[i];
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@ -422,64 +409,64 @@ static bool udev_set_rumble(unsigned i,
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return false;
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old_strength = pad->strength[effect];
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if (old_strength == strength)
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return true;
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old_effect = pad->has_set_ff[effect] ? pad->effects[effect] : -1;
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if (strength && strength != pad->configured_strength[effect])
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if (old_strength != strength)
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{
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/* Create new or update old playing state. */
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struct ff_effect e = {0};
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/* This defines the length of the effect and
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the delay before playing it. This means there
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is a limit on the maximum vibration time, but
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it's hopefully sufficient for most cases. Maybe
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there's a better way? */
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struct ff_replay replay = {0xffff, 0};
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int old_effect = pad->has_set_ff[effect] ? pad->effects[effect] : -1;
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e.type = FF_RUMBLE;
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e.id = old_effect;
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e.replay = replay;
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switch (effect)
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if (strength && strength != pad->configured_strength[effect])
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{
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case RETRO_RUMBLE_STRONG:
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e.u.rumble.strong_magnitude = strength;
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break;
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case RETRO_RUMBLE_WEAK:
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e.u.rumble.weak_magnitude = strength;
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break;
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default:
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/* Create new or update old playing state. */
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struct ff_effect e = {0};
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/* This defines the length of the effect and
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the delay before playing it. This means there
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is a limit on the maximum vibration time, but
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it's hopefully sufficient for most cases. Maybe
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there's a better way? */
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struct ff_replay replay = {0xffff, 0};
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e.type = FF_RUMBLE;
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e.id = old_effect;
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e.replay = replay;
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switch (effect)
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{
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case RETRO_RUMBLE_STRONG:
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e.u.rumble.strong_magnitude = strength;
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break;
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case RETRO_RUMBLE_WEAK:
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e.u.rumble.weak_magnitude = strength;
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break;
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default:
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return false;
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}
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if (ioctl(pad->fd, EVIOCSFF, &e) < 0)
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{
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RARCH_ERR("Failed to set rumble effect on pad #%u.\n", i);
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return false;
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}
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pad->effects[effect] = e.id;
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pad->has_set_ff[effect] = true;
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pad->configured_strength[effect] = strength;
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}
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pad->strength[effect] = strength;
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if (ioctl(pad->fd, EVIOCSFF, &e) < 0)
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/* It seems that we can update strength with EVIOCSFF atomically. */
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if ((!!strength) != (!!old_strength))
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{
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RARCH_ERR("Failed to set rumble effect on pad #%u.\n", i);
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return false;
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}
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struct input_event play;
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pad->effects[effect] = e.id;
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pad->has_set_ff[effect] = true;
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pad->configured_strength[effect] = strength;
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}
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pad->strength[effect] = strength;
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play.type = EV_FF;
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play.code = pad->effects[effect];
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play.value = !!strength;
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/* It seems that we can update strength with EVIOCSFF atomically. */
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if ((!!strength) != (!!old_strength))
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{
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struct input_event play = {{0}};
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play.type = EV_FF;
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play.code = pad->effects[effect];
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play.value = !!strength;
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if (write(pad->fd, &play, sizeof(play)) < (ssize_t)sizeof(play))
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{
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RARCH_ERR("[udev]: Failed to play rumble effect #%u on pad #%u.\n",
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effect, i);
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return false;
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if (write(pad->fd, &play, sizeof(play)) < (ssize_t)sizeof(play))
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{
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RARCH_ERR("[udev]: Failed to play rumble effect #%u on pad #%u.\n",
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effect, i);
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return false;
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}
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}
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}
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@ -602,27 +589,23 @@ static void *udev_joypad_init(void *data)
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for (i = 0; i < MAX_USERS; i++)
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udev_pads[i].fd = -1;
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udev_joypad_fd = udev_new();
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if (!udev_joypad_fd)
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if (!(udev_joypad_fd = udev_new()))
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return NULL;
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udev_joypad_mon = udev_monitor_new_from_netlink(udev_joypad_fd, "udev");
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if (udev_joypad_mon)
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if ((udev_joypad_mon = udev_monitor_new_from_netlink(udev_joypad_fd, "udev")))
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{
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udev_monitor_filter_add_match_subsystem_devtype(
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udev_joypad_mon, "input", NULL);
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udev_monitor_enable_receiving(udev_joypad_mon);
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}
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enumerate = udev_enumerate_new(udev_joypad_fd);
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if (!enumerate)
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if (!(enumerate = udev_enumerate_new(udev_joypad_fd)))
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goto error;
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udev_enumerate_add_match_property(enumerate, "ID_INPUT_JOYSTICK", "1");
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udev_enumerate_add_match_subsystem(enumerate, "input");
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udev_enumerate_scan_devices(enumerate);
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devs = udev_enumerate_get_list_entry(enumerate);
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if (!devs)
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if (!(devs = udev_enumerate_get_list_entry(enumerate)))
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RARCH_DBG("[udev]: Couldn't open any joypads. Are permissions set correctly for /dev/input/event* and /run/udev/?\n");
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udev_list_entry_foreach(item, devs)
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@ -750,31 +733,31 @@ static int16_t udev_joypad_state(
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const struct retro_keybind *binds,
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unsigned port)
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{
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unsigned i;
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int16_t ret = 0;
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uint16_t port_idx = joypad_info->joy_idx;
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const struct udev_joypad *pad = (const struct udev_joypad*)
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&udev_pads[port_idx];
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if (port_idx >= DEFAULT_MAX_PADS)
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return 0;
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for (i = 0; i < RARCH_FIRST_CUSTOM_BIND; i++)
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if (port_idx < DEFAULT_MAX_PADS)
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{
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/* Auto-binds are per joypad, not per user. */
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const uint64_t joykey = (binds[i].joykey != NO_BTN)
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? binds[i].joykey : joypad_info->auto_binds[i].joykey;
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const uint32_t joyaxis = (binds[i].joyaxis != AXIS_NONE)
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? binds[i].joyaxis : joypad_info->auto_binds[i].joyaxis;
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if (
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unsigned i;
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const struct udev_joypad *pad = (const struct udev_joypad*)
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&udev_pads[port_idx];
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for (i = 0; i < RARCH_FIRST_CUSTOM_BIND; i++)
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{
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/* Auto-binds are per joypad, not per user. */
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const uint64_t joykey = (binds[i].joykey != NO_BTN)
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? binds[i].joykey : joypad_info->auto_binds[i].joykey;
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const uint32_t joyaxis = (binds[i].joyaxis != AXIS_NONE)
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? binds[i].joyaxis : joypad_info->auto_binds[i].joyaxis;
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if (
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(uint16_t)joykey != NO_BTN
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&& udev_joypad_button_state(pad, port_idx, (uint16_t)joykey)
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)
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ret |= ( 1 << i);
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else if (joyaxis != AXIS_NONE &&
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((float)abs(udev_joypad_axis_state(pad, port_idx, joyaxis))
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/ 0x8000) > joypad_info->axis_threshold)
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ret |= (1 << i);
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&& udev_joypad_button_state(pad, port_idx, (uint16_t)joykey)
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)
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ret |= ( 1 << i);
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else if (joyaxis != AXIS_NONE &&
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((float)abs(udev_joypad_axis_state(pad, port_idx, joyaxis))
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/ 0x8000) > joypad_info->axis_threshold)
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ret |= (1 << i);
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}
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}
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return ret;
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