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| author | Nathanael Sensfelder <SpamShield0@MultiAgentSystems.org> | 2019-12-23 15:44:19 +0100 | 
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| committer | Nathanael Sensfelder <SpamShield0@MultiAgentSystems.org> | 2019-12-23 15:44:19 +0100 | 
| commit | 390576c3839ee7abb845e27b7267de45495e6b2f (patch) | |
| tree | c481c37c868ccc65a3476f60b17369b21a90b79b /src/input.c | |
| parent | 4355548f79375a62bb5e3bb5695190d48e4c0bc3 (diff) | |
Starting to turn relabsd into a proper daemon...
Diffstat (limited to 'src/input.c')
| -rw-r--r-- | src/input.c | 276 | 
1 files changed, 0 insertions, 276 deletions
| diff --git a/src/input.c b/src/input.c deleted file mode 100644 index e8e1bab..0000000 --- a/src/input.c +++ /dev/null @@ -1,276 +0,0 @@ -#include <fcntl.h> -#include <errno.h> -#include <string.h> -#include <unistd.h> - -#include <libevdev/libevdev.h> - -#include "error.h" -#include "axis.h" -#include "config.h" - -#include "input.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_input_open -( -   struct relabsd_input * 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_input_close (const struct relabsd_input * const input) -{ -   RELABSD_S_DEBUG(RELABSD_DEBUG_PROGRAM_FLOW, "Closing input device..."); - -   libevdev_free(input->dev); -   close(input->fd); -} - -int relabsd_input_read -( -   const struct relabsd_input * 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_input_wait_for_next_event -( -   const struct relabsd_input * 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; -} | 


