diff options
Diffstat (limited to 'backends/evdev.c')
| -rw-r--r-- | backends/evdev.c | 57 |
1 files changed, 52 insertions, 5 deletions
diff --git a/backends/evdev.c b/backends/evdev.c index ca8469a..565eb17 100644 --- a/backends/evdev.c +++ b/backends/evdev.c @@ -27,6 +27,12 @@ typedef union { uint64_t label; } evdev_channel_ident; +static struct { + uint8_t detect; +} evdev_config = { + .detect = 0 +}; + int init(){ backend evdev = { .name = BACKEND_NAME, @@ -49,7 +55,15 @@ int init(){ } static int evdev_configure(char* option, char* value) { - fprintf(stderr, "The evdev backend does not take any global configuration\n"); + if(!strcmp(option, "detect")){ + evdev_config.detect = 1; + if(!strcmp(value, "off")){ + evdev_config.detect = 0; + } + return 0; + } + + fprintf(stderr, "Unknown configuration option %s for evdev backend\n", option); return 1; } @@ -185,6 +199,22 @@ static int evdev_configure_instance(instance* inst, char* option, char* value) { data->exclusive = 1; return 0; } + else if(!strncmp(option, "relaxis.", 8)){ + data->relative_axis = realloc(data->relative_axis, (data->relative_axes + 1) * sizeof(evdev_relaxis_config)); + if(!data->relative_axis){ + fprintf(stderr, "Failed to allocate memory\n"); + return 1; + } + data->relative_axis[data->relative_axes].code = libevdev_event_code_from_name(EV_REL, option + 8); + data->relative_axis[data->relative_axes].max = strtoul(value, &next_token, 0); + data->relative_axis[data->relative_axes].current = strtoul(next_token, NULL, 0); + if(data->relative_axis[data->relative_axes].code < 0){ + fprintf(stderr, "Failed to configure relative axis extents for %s.%s\n", inst->name, option + 8); + return 1; + } + data->relative_axes++; + return 0; + } #ifndef EVDEV_NO_UINPUT else if(!strcmp(option, "output")){ data->output_enabled = 1; @@ -214,7 +244,7 @@ static int evdev_configure_instance(instance* inst, char* option, char* value) { return 0; } #endif - fprintf(stderr, "Unknown configuration parameter %s for evdev backend\n", option); + fprintf(stderr, "Unknown instance configuration parameter %s for evdev instance %s\n", option, inst->name); return 1; } @@ -275,21 +305,32 @@ static int evdev_push_event(instance* inst, evdev_instance_data* data, struct in .fields.code = event.code }; channel* chan = mm_channel(inst, ident.label, 0); + size_t axis; if(chan){ val.raw.u64 = event.value; switch(event.type){ case EV_REL: - val.normalised = 0.5 + ((event.value < 0) ? 0.5 : -0.5); + for(axis = 0; axis < data->relative_axes; axis++){ + if(data->relative_axis[axis].code == event.code){ + data->relative_axis[axis].current = clamp(data->relative_axis[axis].current + event.value, data->relative_axis[axis].max, 0); + val.normalised = (double) data->relative_axis[axis].current / (double) data->relative_axis[axis].max; + break; + } + } + if(axis == data->relative_axes){ + val.normalised = 0.5 + ((event.value < 0) ? 0.5 : -0.5); + break; + } break; case EV_ABS: range = libevdev_get_abs_maximum(data->input_ev, event.code) - libevdev_get_abs_minimum(data->input_ev, event.code); - val.normalised = (event.value - libevdev_get_abs_minimum(data->input_ev, event.code)) / (double) range; + val.normalised = clamp((event.value - libevdev_get_abs_minimum(data->input_ev, event.code)) / (double) range, 1.0, 0.0); break; case EV_KEY: case EV_SW: default: - val.normalised = 1.0 * event.value; + val.normalised = clamp(1.0 * event.value, 1.0, 0.0); break; } @@ -299,6 +340,10 @@ static int evdev_push_event(instance* inst, evdev_instance_data* data, struct in } } + if(evdev_config.detect){ + fprintf(stderr, "Incoming evdev data for channel %s.%s.%s\n", inst->name, libevdev_event_type_get_name(event.type), libevdev_event_code_get_name(event.type, event.code)); + } + return 0; } @@ -470,6 +515,8 @@ static int evdev_shutdown(){ libevdev_free(data->output_proto); #endif + data->relative_axes = 0; + free(data->relative_axis); free(data); } |