diff options
| -rw-r--r-- | evdev.c | 21 | ||||
| -rw-r--r-- | evdev.h | 9 |
2 files changed, 29 insertions, 1 deletions
@@ -5,7 +5,9 @@ #include <unistd.h> #include <sys/ioctl.h> #include <libevdev/libevdev.h> +#ifndef EVDEV_NO_UINPUT #include <libevdev/libevdev-uinput.h> +#endif #include "midimonster.h" #include "evdev.h" @@ -60,12 +62,14 @@ static instance* evdev_instance(){ } data->input_fd = -1; +#ifndef EVDEV_NO_UINPUT data->output_proto = libevdev_new(); if(!data->output_proto){ fprintf(stderr, "Failed to initialize libevdev output prototype device\n"); free(data); return NULL; } +#endif inst->impl = data; return inst; @@ -73,10 +77,12 @@ static instance* evdev_instance(){ static int evdev_configure_instance(instance* inst, char* option, char* value) { evdev_instance_data* data = (evdev_instance_data*) inst->impl; +#ifndef EVDEV_NO_UINPUT char* next_token = NULL; struct input_absinfo abs_info = { 0 }; +#endif if(!strcmp(option, "input")){ if(data->input_fd >= 0){ @@ -107,6 +113,7 @@ static int evdev_configure_instance(instance* inst, char* option, char* value) { } data->exclusive = 1; } +#ifndef EVDEV_NO_UINPUT else if(!strcmp(option, "name")){ data->output_enabled = 1; libevdev_set_name(data->output_proto, value); @@ -131,6 +138,7 @@ static int evdev_configure_instance(instance* inst, char* option, char* value) { return 1; } } +#endif else{ fprintf(stderr, "Unknown configuration parameter %s for evdev backend\n", option); return 1; @@ -139,7 +147,9 @@ static int evdev_configure_instance(instance* inst, char* option, char* value) { } static channel* evdev_channel(instance* inst, char* spec){ +#ifndef EVDEV_NO_UINPUT evdev_instance_data* data = (evdev_instance_data*) inst->impl; +#endif char* separator = strchr(spec, '.'); evdev_channel_ident ident = { .label = 0 @@ -166,6 +176,7 @@ static channel* evdev_channel(instance* inst, char* spec){ ident.fields.code = strtoul(separator, NULL, 10); } +#ifndef EVDEV_NO_UINPUT if(data->output_enabled){ if(!libevdev_has_event_code(data->output_proto, ident.fields.type, ident.fields.code)){ //enable the event on the device @@ -179,6 +190,7 @@ static channel* evdev_channel(instance* inst, char* spec){ } } } +#endif return mm_channel(inst, ident.label, 1); } @@ -273,6 +285,7 @@ static int evdev_start(){ for(u = 0; u < n; u++){ data = (evdev_instance_data*) inst[u]->impl; +#ifndef EVDEV_NO_UINPUT if(data->output_enabled){ if(libevdev_uinput_create_from_device(data->output_proto, LIBEVDEV_UINPUT_OPEN_MANAGED, &data->output_ev)){ fprintf(stderr, "Failed to create evdev output device: %s\n", strerror(errno)); @@ -280,6 +293,7 @@ static int evdev_start(){ } fprintf(stderr, "Created device node %s for instance %s\n", libevdev_uinput_get_devnode(data->output_ev), inst[u]->name); } +#endif inst[u]->ident = data->input_fd; if(data->input_fd >= 0){ @@ -299,6 +313,7 @@ static int evdev_start(){ } static int evdev_set(instance* inst, size_t num, channel** c, channel_value* v) { +#ifndef EVDEV_NO_UINPUT size_t evt = 0; evdev_instance_data* data = (evdev_instance_data*) inst->impl; evdev_channel_ident ident = { @@ -347,6 +362,10 @@ static int evdev_set(instance* inst, size_t num, channel** c, channel_value* v) } return 0; +#else + fprintf(stderr, "The evdev backend does not support output on this platform\n"); + return 1; +#endif } static int evdev_shutdown(){ @@ -367,11 +386,13 @@ static int evdev_shutdown(){ close(data->input_fd); } +#ifndef EVDEV_NO_UINPUT if(data->output_enabled){ libevdev_uinput_destroy(data->output_ev); } libevdev_free(data->output_proto); +#endif } free(instances); @@ -1,8 +1,13 @@ #include <sys/types.h> -#include <linux/input.h> #include "midimonster.h" +/* + * This provides read-write access to the Linux kernel evdev subsystem + * via libevdev. On systems where uinput is not supported, output can be + * disabled by building with -DEVDEV_NO_UINPUT + */ + int init(); static int evdev_configure(char* option, char* value); static int evdev_configure_instance(instance* instance, char* option, char* value); @@ -19,6 +24,8 @@ typedef struct /*_evdev_instance_model*/ { int exclusive; int output_enabled; +#ifndef EVDEV_NO_UINPUT struct libevdev* output_proto; struct libevdev_uinput* output_ev; +#endif } evdev_instance_data; |