117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
/*
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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/* Simple test of the SDL sensor code */
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#include "SDL.h"
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static const char *GetSensorTypeString(SDL_SensorType type)
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{
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static char unknown_type[64];
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switch (type)
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{
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case SDL_SENSOR_INVALID:
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return "SDL_SENSOR_INVALID";
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case SDL_SENSOR_UNKNOWN:
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return "SDL_SENSOR_UNKNOWN";
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case SDL_SENSOR_ACCEL:
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return "SDL_SENSOR_ACCEL";
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case SDL_SENSOR_GYRO:
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return "SDL_SENSOR_GYRO";
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default:
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SDL_snprintf(unknown_type, sizeof(unknown_type), "UNKNOWN (%d)", type);
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return unknown_type;
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}
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}
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static void HandleSensorEvent(SDL_SensorEvent *event)
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{
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SDL_Sensor *sensor = SDL_SensorFromInstanceID(event->which);
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if (!sensor) {
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SDL_Log("Couldn't get sensor for sensor event\n");
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return;
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}
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switch (SDL_SensorGetType(sensor)) {
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case SDL_SENSOR_ACCEL:
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SDL_Log("Accelerometer update: %.2f, %.2f, %.2f\n", event->data[0], event->data[1], event->data[2]);
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break;
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case SDL_SENSOR_GYRO:
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SDL_Log("Gyro update: %.2f, %.2f, %.2f\n", event->data[0], event->data[1], event->data[2]);
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break;
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default:
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SDL_Log("Sensor update for sensor type %s\n", GetSensorTypeString(SDL_SensorGetType(sensor)));
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break;
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}
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}
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int
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main(int argc, char **argv)
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{
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int i;
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int num_sensors, num_opened;
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/* Load the SDL library */
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if (SDL_Init(SDL_INIT_SENSOR) < 0) {
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SDL_Log("Couldn't initialize SDL: %s\n", SDL_GetError());
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return (1);
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}
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num_sensors = SDL_NumSensors();
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num_opened = 0;
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SDL_Log("There are %d sensors available\n", num_sensors);
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for (i = 0; i < num_sensors; ++i) {
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SDL_Log("Sensor %d: %s, type %s, platform type %d\n",
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SDL_SensorGetDeviceInstanceID(i),
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SDL_SensorGetDeviceName(i),
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GetSensorTypeString(SDL_SensorGetDeviceType(i)),
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SDL_SensorGetDeviceNonPortableType(i));
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if (SDL_SensorGetDeviceType(i) != SDL_SENSOR_UNKNOWN) {
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SDL_Sensor *sensor = SDL_SensorOpen(i);
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if (sensor == NULL) {
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SDL_Log("Couldn't open sensor %d: %s\n", SDL_SensorGetDeviceInstanceID(i), SDL_GetError());
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} else {
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++num_opened;
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}
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}
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}
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SDL_Log("Opened %d sensors\n", num_opened);
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if (num_opened > 0) {
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SDL_bool done = SDL_FALSE;
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SDL_Event event;
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SDL_CreateWindow("Sensor Test", 0, 0, 0, 0, SDL_WINDOW_FULLSCREEN_DESKTOP);
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while (!done) {
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while (SDL_PollEvent(&event) > 0) {
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switch (event.type) {
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case SDL_SENSORUPDATE:
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HandleSensorEvent(&event.sensor);
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break;
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case SDL_MOUSEBUTTONUP:
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case SDL_KEYUP:
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case SDL_QUIT:
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done = SDL_TRUE;
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break;
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default:
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break;
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}
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}
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}
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}
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SDL_Quit();
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return (0);
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}
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