diff --git a/Makefile b/Makefile index 492c13e03a..aef29240d3 100644 --- a/Makefile +++ b/Makefile @@ -182,6 +182,7 @@ endif ifeq ($(HAVE_SDL), 1) OBJ += gfx/sdl_gfx.o input/sdl_input.o input/sdl_joypad.o audio/sdl_audio.o JOYCONFIG_OBJ += input/sdl_joypad.o + JOYCONFIG_LIBS += $(SDL_LIBS) DEFINES += $(SDL_CFLAGS) $(BSD_LOCAL_INC) LIBS += $(SDL_LIBS) endif @@ -316,11 +317,19 @@ ifeq ($(HAVE_PYTHON), 1) OBJ += gfx/py_state/py_state.o endif +ifeq ($(HAVE_UDEV), 1) + DEFINES += $(UDEV_CFLAGS) + LIBS += $(UDEV_LIBS) + JOYCONFIG_LIBS += $(UDEV_LIBS) + OBJ += input/udev_joypad.o + JOYCONFIG_OBJ += tools/udev_joypad.o +endif + ifeq ($(HAVE_NEON),1) - OBJ += audio/sinc_neon.o + OBJ += audio/sinc_neon.o # When compiled without this, tries to attempt to compile sinc lerp, # which will error out - DEFINES += -DSINC_LOWER_QUALITY -DHAVE_NEON + DEFINES += -DSINC_LOWER_QUALITY -DHAVE_NEON endif OBJ += audio/utils.o @@ -376,9 +385,9 @@ retroarch: $(OBJ) tools/retroarch-joyconfig: $(JOYCONFIG_OBJ) @$(if $(Q), $(shell echo echo LD $@),) ifeq ($(CXX_BUILD), 1) - $(Q)$(CXX) -o $@ $(JOYCONFIG_OBJ) $(SDL_LIBS) $(LDFLAGS) $(LIBRARY_DIRS) + $(Q)$(CXX) -o $@ $(JOYCONFIG_OBJ) $(JOYCONFIG_LIBS) $(LDFLAGS) $(LIBRARY_DIRS) else - $(Q)$(CC) -o $@ $(JOYCONFIG_OBJ) $(SDL_LIBS) $(LDFLAGS) $(LIBRARY_DIRS) + $(Q)$(CC) -o $@ $(JOYCONFIG_OBJ) $(JOYCONFIG_LIBS) $(LDFLAGS) $(LIBRARY_DIRS) endif tools/retrolaunch/retrolaunch: $(RETROLAUNCH_OBJ) @@ -393,6 +402,10 @@ tools/linuxraw_joypad.o: input/linuxraw_joypad.c @$(if $(Q), $(shell echo echo CC $<),) $(Q)$(CC) $(CFLAGS) $(DEFINES) -DIS_JOYCONFIG -c -o $@ $< +tools/udev_joypad.o: input/udev_joypad.c + @$(if $(Q), $(shell echo echo CC $<),) + $(Q)$(CC) $(CFLAGS) $(DEFINES) -DIS_JOYCONFIG -c -o $@ $< + tools/input_common_launch.o: input/input_common.c @$(if $(Q), $(shell echo echo CC $<),) $(Q)$(CC) $(CFLAGS) $(DEFINES) -DIS_RETROLAUNCH -c -o $@ $< diff --git a/input/input_common.c b/input/input_common.c index 0e7418bfb8..2e2e7c2615 100644 --- a/input/input_common.c +++ b/input/input_common.c @@ -48,6 +48,9 @@ static const rarch_joypad_driver_t *joypad_drivers[] = { #ifdef HAVE_DINPUT &dinput_joypad, #endif +#ifdef HAVE_UDEV + &udev_joypad, +#endif #if defined(__linux) && !defined(ANDROID) &linuxraw_joypad, #endif diff --git a/input/input_common.h b/input/input_common.h index 96d641dbdc..ef0becf5bf 100644 --- a/input/input_common.h +++ b/input/input_common.h @@ -93,6 +93,7 @@ const char *input_joypad_name(const rarch_joypad_driver_t *driver, unsigned joyp extern const rarch_joypad_driver_t dinput_joypad; extern const rarch_joypad_driver_t linuxraw_joypad; +extern const rarch_joypad_driver_t udev_joypad; extern const rarch_joypad_driver_t winxinput_joypad; // Named as such to avoid confusion with xb1/360 port code extern const rarch_joypad_driver_t sdl_joypad; diff --git a/input/udev_joypad.c b/input/udev_joypad.c new file mode 100644 index 0000000000..c0bd5bde57 --- /dev/null +++ b/input/udev_joypad.c @@ -0,0 +1,481 @@ +/* RetroArch - A frontend for libretro. + * Copyright (C) 2010-2013 - Hans-Kristian Arntzen + * + * 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 . + */ + +#include "input_common.h" +#include "../general.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +// Udev/Evdev Linux joypad driver. +// More complex and extremely low level, +// but only Linux driver which can support joypad rumble. +// Uses udev for device detection + hotplug. +// +// Code adapted from SDL 2.0's implementation. + +#define NUM_BUTTONS 32 +#define NUM_AXES 32 +#define NUM_HATS 4 + +struct udev_joypad +{ + int fd; + dev_t device; + + // Input state polled + bool buttons[NUM_BUTTONS]; + int16_t axes[NUM_AXES]; + uint16_t hats[NUM_HATS]; + + // Maps keycodes -> button/axes + uint8_t button_bind[KEY_MAX]; + uint8_t axes_bind[ABS_MAX]; + struct input_absinfo absinfo[NUM_AXES]; + + char ident[256]; +}; + +static struct udev *g_udev; +static struct udev_monitor *g_udev_mon; +static struct udev_joypad g_pads[MAX_PLAYERS]; + +/* +static bool udev_joypad_init_pad(const char *path, struct udev_joypad *pad) +{ + if (pad->fd >= 0) + return false; + + // Device can have just been created, but not made accessible (yet). + // IN_ATTRIB will signal when permissions change. + if (access(path, R_OK) < 0) + return false; + + pad->fd = open(path, O_RDONLY | O_NONBLOCK); + + *pad->ident = '\0'; + if (pad->fd >= 0) + { + if (ioctl(pad->fd, JSIOCGNAME(sizeof(g_settings.input.device_names[0])), pad->ident) >= 0) + { + RARCH_LOG("[Joypad]: Found pad: %s on %s.\n", pad->ident, path); + + if (g_hotplug) + { + char msg[512]; + snprintf(msg, sizeof(msg), "Joypad #%u (%s) connected.", (unsigned)(pad - g_pads), pad->ident); +#ifndef IS_JOYCONFIG + msg_queue_push(g_extern.msg_queue, msg, 0, 60); +#endif + } + } + + else + RARCH_ERR("[Joypad]: Didn't find ident of %s.\n", path); + + struct epoll_event event; + event.events = EPOLLIN; + event.data.ptr = pad; + epoll_ctl(g_epoll, EPOLL_CTL_ADD, pad->fd, &event); + return true; + } + else + { + RARCH_ERR("[Joypad]: Failed to open pad %s (error: %s).\n", path, strerror(errno)); + return false; + } +} + +static void handle_plugged_pad(void) +{ + size_t event_size = sizeof(struct inotify_event) + NAME_MAX + 1; + uint8_t *event_buf = (uint8_t*)calloc(1, event_size); + if (!event_buf) + return; + + int rc; + while ((rc = read(g_notify, event_buf, event_size)) >= 0) + { + struct inotify_event *event = NULL; + // Can read multiple events in one read() call. + for (int i = 0; i < rc; i += event->len + sizeof(struct inotify_event)) + { + event = (struct inotify_event*)&event_buf[i]; + + if (strstr(event->name, "js") != event->name) + continue; + + unsigned index = strtoul(event->name + 2, NULL, 0); + if (index >= MAX_PLAYERS) + continue; + + if (event->mask & IN_DELETE) + { + if (g_pads[index].fd >= 0) + { + if (g_hotplug) + { + char msg[512]; + snprintf(msg, sizeof(msg), "Joypad #%u (%s) disconnected.", index, g_pads[index].ident); +#ifndef IS_JOYCONFIG + msg_queue_push(g_extern.msg_queue, msg, 0, 60); +#endif + } + + RARCH_LOG("[Joypad]: Joypad %s disconnected.\n", g_pads[index].ident); + close(g_pads[index].fd); + memset(g_pads[index].buttons, 0, sizeof(g_pads[index].buttons)); + memset(g_pads[index].axes, 0, sizeof(g_pads[index].axes)); + g_pads[index].fd = -1; + *g_pads[index].ident = '\0'; + + input_config_autoconfigure_joypad(index, NULL, NULL); + } + } + // Sometimes, device will be created before acess to it is established. + else if (event->mask & (IN_CREATE | IN_ATTRIB)) + { + char path[PATH_MAX]; + snprintf(path, sizeof(path), "/dev/input/%s", event->name); + bool ret = udev_joypad_init_pad(path, &g_pads[index]); + + if (*g_pads[index].ident && ret) + input_config_autoconfigure_joypad(index, g_pads[index].ident, "udev"); + } + } + } + + free(event_buf); +} +*/ + +static void handle_hat(struct udev_joypad *pad, + unsigned hat, unsigned axis, int value) +{ +} + +static int16_t compute_axis(const struct input_absinfo *info, int value) +{ + return 0; +} + +static void poll_pad(unsigned i) +{ + struct udev_joypad *pad = &g_pads[i]; + if (pad->fd < 0) + return; + + int len; + struct input_event events[32]; + + while ((len = read(pad->fd, events, sizeof(events))) > 0) + { + len /= sizeof(*events); + for (int i = 0; i < len; i++) + { + int code = events[i].code; + switch (events[i].type) + { + case EV_KEY: + if (code >= BTN_MISC) + pad->buttons[pad->button_bind[code]] = events[i].value; + break; + + case EV_ABS: + if (code >= ABS_MISC) + break; + + switch (code) + { + case ABS_HAT0X: + case ABS_HAT0Y: + case ABS_HAT1X: + case ABS_HAT1Y: + case ABS_HAT2X: + case ABS_HAT2Y: + case ABS_HAT3X: + case ABS_HAT3Y: + { + code -= ABS_HAT0X; + handle_hat(pad, code / 2, code % 2, events[i].value); + break; + } + + default: + { + unsigned axis = pad->axes_bind[code]; + pad->axes[axis] = compute_axis(&pad->absinfo[axis], events[i].value); + break; + } + } + break; + + default: + break; + } + } + } +} + +static void udev_joypad_poll(void) +{ + for (unsigned i = 0; i < MAX_PLAYERS; i++) + poll_pad(i); +} + +#define test_bit(nr, addr) \ + (((1UL << ((nr) % (sizeof(long) * CHAR_BIT))) & ((addr)[(nr) / (sizeof(long) * CHAR_BIT)])) != 0) +#define NBITS(x) ((((x) - 1) / (sizeof(long) * CHAR_BIT)) + 1) + +static int open_joystick(const char *path) +{ + int fd = open(path, O_RDONLY | O_NONBLOCK); + if (fd < 0) + return fd; + + unsigned long evbit[NBITS(EV_MAX)] = {0}; + unsigned long keybit[NBITS(KEY_MAX)] = {0}; + unsigned long absbit[NBITS(ABS_MAX)] = {0}; + + if ((ioctl(fd, EVIOCGBIT(0, sizeof(evbit)), evbit) < 0) || + (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) || + (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0)) + return false; + + // Has to at least support EV_KEY interface. + if (!test_bit(EV_KEY, evbit)) + return false; + + return fd; +} + +static int find_vacant_pad(void) +{ + for (unsigned i = 0; i < MAX_PLAYERS; i++) + if (g_pads[i].fd < 0) + return i; + return -1; +} + +static void free_pad(unsigned pad) +{ + if (g_pads[pad].fd >= 0) + close(g_pads[pad].fd); + memset(&g_pads[pad], 0, sizeof(g_pads[pad])); + g_pads[pad].fd = -1; +} + +static bool add_pad(unsigned i, int fd) +{ + struct udev_joypad *pad = &g_pads[i]; + if (ioctl(fd, EVIOCGNAME(sizeof(pad->ident)), pad->ident) < 0) + return false; + + RARCH_LOG("[udev]: Found pad: %s on.\n", pad->ident); + + struct stat st; + if (fstat(fd, &st) < 0) + return false; + + unsigned long keybit[NBITS(KEY_MAX)] = {0}; + unsigned long absbit[NBITS(ABS_MAX)] = {0}; + + if ((ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) || + (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0)) + return false; + + // Go through all possible keycodes, check if they are used, + // and map them to button/axes/hat indices. + unsigned buttons = 0; + unsigned axes = 0; + for (int i = BTN_JOYSTICK; i < KEY_MAX && buttons < NUM_BUTTONS; i++) + if (test_bit(i, keybit)) + pad->button_bind[i] = buttons++; + for (int i = BTN_MISC; i < BTN_JOYSTICK; i++) + if (test_bit(i, keybit)) + pad->button_bind[i] = buttons++; + for (int i = 0; i < ABS_MISC && axes < NUM_AXES; i++) + { + // Skip hats for now. + if (i == ABS_HAT0X) + { + i = ABS_HAT3Y; + continue; + } + + if (test_bit(i, absbit)) + { + struct input_absinfo *abs = &pad->absinfo[axes]; + if (ioctl(fd, EVIOCGABS(i), abs) < 0) + continue; + pad->axes_bind[i] = axes++; + } + } + + pad->device = st.st_rdev; + pad->fd = fd; + + return true; +} + +static void check_device(const char *path) +{ + struct stat st; + if (stat(path, &st) < 0) + return; + + for (unsigned i = 0; i < MAX_PLAYERS; i++) + if (st.st_rdev == g_pads[i].device) + return; + + int fd = open_joystick(path); + if (fd < 0) + return; + + int pad = find_vacant_pad(); + if (pad < 0) + { + close(fd); + return; + } + + if (add_pad(pad, fd)) + { + // Autodetect. + } + else + close(fd); +} + +static void udev_joypad_destroy(void) +{ + for (unsigned i = 0; i < MAX_PLAYERS; i++) + free_pad(i); + + if (g_udev_mon) + udev_monitor_unref(g_udev_mon); + g_udev_mon = NULL; + if (g_udev) + udev_unref(g_udev); + g_udev = NULL; +} + +static bool udev_joypad_init(void) +{ + for (unsigned i = 0; i < MAX_PLAYERS; i++) + free_pad(i); + struct udev_list_entry *devs = NULL; + struct udev_list_entry *item = NULL; + + g_udev = udev_new(); + if (!g_udev) + return false; + + g_udev_mon = udev_monitor_new_from_netlink(g_udev, "udev"); + if (g_udev_mon) + { + udev_monitor_filter_add_match_subsystem_devtype(g_udev_mon, "input", NULL); + udev_monitor_enable_receiving(g_udev_mon); + } + + struct udev_enumerate *enumerate = udev_enumerate_new(g_udev); + if (!enumerate) + goto error; + + udev_enumerate_add_match_property(enumerate, "ID_INPUT_JOYSTICK", "1"); + udev_enumerate_scan_devices(enumerate); + devs = udev_enumerate_get_list_entry(enumerate); + for (struct udev_list_entry *item = devs; item; item = udev_list_entry_get_next(item)) + { + const char *name = udev_list_entry_get_name(item); + struct udev_device *dev = udev_device_new_from_syspath(g_udev, name); + check_device(udev_device_get_devnode(dev)); + udev_device_unref(dev); + } + + udev_enumerate_unref(enumerate); + return true; + +error: + if (enumerate) + udev_enumerate_unref(enumerate); + udev_joypad_destroy(); + return false; +} + +static bool udev_joypad_button(unsigned port, uint16_t joykey) +{ + const struct udev_joypad *pad = &g_pads[port]; + + return joykey < NUM_BUTTONS && pad->buttons[joykey]; +} + +static int16_t udev_joypad_axis(unsigned port, uint32_t joyaxis) +{ + if (joyaxis == AXIS_NONE) + return 0; + + const struct udev_joypad *pad = &g_pads[port]; + + int16_t val = 0; + if (AXIS_NEG_GET(joyaxis) < NUM_AXES) + { + val = pad->axes[AXIS_NEG_GET(joyaxis)]; + if (val > 0) + val = 0; + // Kernel returns values in range [-0x7fff, 0x7fff]. + } + else if (AXIS_POS_GET(joyaxis) < NUM_AXES) + { + val = pad->axes[AXIS_POS_GET(joyaxis)]; + if (val < 0) + val = 0; + } + + return val; +} + +static bool udev_joypad_query_pad(unsigned pad) +{ + return pad < MAX_PLAYERS && g_pads[pad].fd >= 0; +} + +static const char *udev_joypad_name(unsigned pad) +{ + if (pad >= MAX_PLAYERS) + return NULL; + + return *g_pads[pad].ident ? g_pads[pad].ident : NULL; +} + +const rarch_joypad_driver_t udev_joypad = { + udev_joypad_init, + udev_joypad_query_pad, + udev_joypad_destroy, + udev_joypad_button, + udev_joypad_axis, + udev_joypad_poll, + udev_joypad_name, + "udev", +}; + diff --git a/qb/config.libs.sh b/qb/config.libs.sh index e19ac3b923..7c8b81f400 100644 --- a/qb/config.libs.sh +++ b/qb/config.libs.sh @@ -245,6 +245,8 @@ else HAVE_XVIDEO='no' fi +check_pkgconf UDEV libudev + check_lib STRL -lc strlcpy check_pkgconf PYTHON python3 @@ -255,6 +257,6 @@ add_define_make OS "$OS" # Creates config.mk and config.h. add_define_make GLOBAL_CONFIG_DIR "$GLOBAL_CONFIG_DIR" -VARS="RGUI ALSA OSS OSS_BSD OSS_LIB AL RSOUND ROAR JACK COREAUDIO PULSE SDL OPENGL GLES VG EGL KMS GBM DRM DYLIB GETOPT_LONG THREADS CG LIBXML2 SDL_IMAGE ZLIB DYNAMIC FFMPEG AVCODEC AVFORMAT AVUTIL SWSCALE FREETYPE XVIDEO X11 XEXT XF86VM XINERAMA NETPLAY NETWORK_CMD STDIN_CMD COMMAND SOCKET_LEGACY FBO STRL PYTHON FFMPEG_ALLOC_CONTEXT3 FFMPEG_AVCODEC_OPEN2 FFMPEG_AVIO_OPEN FFMPEG_AVFORMAT_WRITE_HEADER FFMPEG_AVFORMAT_NEW_STREAM FFMPEG_AVCODEC_ENCODE_AUDIO2 FFMPEG_AVCODEC_ENCODE_VIDEO2 BSV_MOVIE VIDEOCORE NEON FLOATHARD FLOATSOFTFP" +VARS="RGUI ALSA OSS OSS_BSD OSS_LIB AL RSOUND ROAR JACK COREAUDIO PULSE SDL OPENGL GLES VG EGL KMS GBM DRM DYLIB GETOPT_LONG THREADS CG LIBXML2 SDL_IMAGE ZLIB DYNAMIC FFMPEG AVCODEC AVFORMAT AVUTIL SWSCALE FREETYPE XVIDEO X11 XEXT XF86VM XINERAMA NETPLAY NETWORK_CMD STDIN_CMD COMMAND SOCKET_LEGACY FBO STRL PYTHON FFMPEG_ALLOC_CONTEXT3 FFMPEG_AVCODEC_OPEN2 FFMPEG_AVIO_OPEN FFMPEG_AVFORMAT_WRITE_HEADER FFMPEG_AVFORMAT_NEW_STREAM FFMPEG_AVCODEC_ENCODE_AUDIO2 FFMPEG_AVCODEC_ENCODE_VIDEO2 BSV_MOVIE VIDEOCORE NEON FLOATHARD FLOATSOFTFP UDEV" create_config_make config.mk $VARS create_config_header config.h $VARS