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Diffstat (limited to 'src/device/physical_device.c')
| -rw-r--r-- | src/device/physical_device.c | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/src/device/physical_device.c b/src/device/physical_device.c deleted file mode 100644 index 7e365da..0000000 --- a/src/device/physical_device.c +++ /dev/null @@ -1,275 +0,0 @@ -/**** RELABSD *****************************************************************/ -#include <errno.h> -#include <fcntl.h> -#include <string.h> -#include <unistd.h> - -/**** LIBEVDEV ****************************************************************/ -#include <libevdev/libevdev.h> - -/**** RELABSD *****************************************************************/ -#include <relabsd/debug.h> - -/* - * Ensures that the input device has enabled the EV_REL axes mentioned - * in the configuration file. - * - * Returns -1 on (fatal) error, - * 0 all configured axes are accounted for. - */ -static int check_for_axes -( - const struct libevdev * const dev, - const struct relabsd_config * const conf -) -{ - int i, device_is_valid; - unsigned int rel_code; - - device_is_valid = 1; - - for (i = RELABSD_VALID_AXES_COUNT; i --> 0;) - { - if (conf->axis[i].enabled) - { - rel_code = relabsd_axis_to_rel((enum relabsd_axis) i); - - if (!libevdev_has_event_code(dev, EV_REL, rel_code)) - { - RELABSD_FATAL - ( - "Input device has no relative %s axis, yet the configuration " - "file asks to convert it.", - relabsd_axis_to_name((enum relabsd_axis) i) - ); - - device_is_valid = 0; - } - } - } - - return (device_is_valid - 1); -} - -/* - * Ensures that the input device is compatible with the config file. - * - * Returns -1 on (fatal) error, - * 0 is the device is compatible. - */ -static int device_is_compatible -( - const struct libevdev * const dev, - const struct relabsd_config * const conf -) -{ - if (!libevdev_has_event_type(dev, EV_REL)) - { - RELABSD_S_FATAL("Input device has no relative axis."); - - return -1; - } - - if (check_for_axes(dev, conf) < 0) - { - return -1; - } - - return 0; -} - -int relabsd_physical_device_open -( - struct relabsd_physical_device * const input, - const struct relabsd_config * const conf -) -{ - RELABSD_S_DEBUG(RELABSD_DEBUG_PROGRAM_FLOW, "Opening input device..."); - - input->fd = open(conf->input_file, O_RDONLY); - - if (input->fd < 0) - { - RELABSD_FATAL - ( - "Could not open device '%s' in read only mode: %s.", - conf->input_file, - strerror(errno) - ); - - return -1; - } - - if - ( - libevdev_new_from_fd(input->fd, &(input->dev)) < 0 - ) - { - RELABSD_FATAL - ( - "libevdev could not open '%s': %s.", - conf->input_file, - strerror(errno) - ); - - close(input->fd); - - return -1; - } - - if (device_is_compatible(input->dev, conf) < 0) - { - return -1; - } - - return 0; -} - -void relabsd_physical_device_close (const struct relabsd_physical_device * const input) -{ - RELABSD_S_DEBUG(RELABSD_DEBUG_PROGRAM_FLOW, "Closing input device..."); - - libevdev_free(input->dev); - close(input->fd); -} - -int relabsd_physical_device_read -( - const struct relabsd_physical_device * const input, - unsigned int * const input_type, - unsigned int * const input_code, - int * const input_value -) -{ - int rc; - struct input_event event; - - /* - if (libevdev_has_event_pending(input->dev) == 0) - { - return -1; - } - */ - rc = - libevdev_next_event - ( - input->dev, - (LIBEVDEV_READ_FLAG_NORMAL | LIBEVDEV_READ_FLAG_BLOCKING), - &event - ); - - /* TODO: Look into LIBEVDEV_READ_STATUS_SYNC, handle it. */ - /* - if (rc == LIBEVDEV_READ_STATUS_SYNC) - { - handle_syn_dropped(input->dev); - } - else - */ - if (rc != LIBEVDEV_READ_STATUS_SUCCESS) - { - RELABSD_WARNING("[INPUT] Could not get next event: %s.", strerror(-rc)); - - return -1; - } - - RELABSD_DEBUG - ( - RELABSD_DEBUG_REAL_EVENTS, - "Valid event received: {type = %s; code = %s; value = %d}.", - libevdev_event_type_get_name(event.type), - libevdev_event_code_get_name(event.type, event.code), - event.value - ); - - *input_type = event.type; - *input_code = event.code; - *input_value = event.value; - - return 0; -} - -int relabsd_physical_device_wait_for_next_event -( - const struct relabsd_physical_device * const input, - const struct relabsd_config * const config -) -{ - int ready_fds; - const int old_errno = errno; - fd_set ready_to_read; - struct timeval curr_timeout; - - FD_ZERO(&ready_to_read); - FD_SET(input->fd, &ready_to_read); - - /* call to select may alter timeout */ - memcpy - ( - (void *) &(curr_timeout), - (const void *) &(config->timeout), - sizeof(struct timeval) - ); - - errno = 0; - - RELABSD_S_ERROR - ( - "Waiting for input to be ready..." - ); - - ready_fds = select - ( - (input->fd + 1), - &ready_to_read, - (fd_set *) NULL, - (fd_set *) NULL, - (input->timed_out) ? NULL : &(curr_timeout) - ); - - if (errno != 0) - { - RELABSD_ERROR - ( - "Unable to wait for timeout: %s (errno: %d).", - strerror(errno), - errno - ); - - if (errno == EINTR) - { - /* Signal interruption? */ - } - else - { - /* TODO: error message */ - } - - errno = old_errno; - - return -1; - } - - if (ready_fds == -1) - { - /* TODO: error message */ - - RELABSD_S_ERROR - ( - "Unable to wait for timeout, yet errno was not set to anything." - ); - - errno = old_errno; - - return -1; - } - - RELABSD_ERROR - ( - "Input is ready, ready_fds = %d", ready_fds - ); - - errno = old_errno; - - return ready_fds; -} |