+static struct sr_datafeed_analog *handle_qm_v1(const struct sr_dev_inst *sdi,
+ char **tokens)
+{
+ struct sr_datafeed_analog *analog;
+ float fvalue;
+ char *e, *u;
+ gboolean is_oor;
+
+ (void)sdi;
+
+ if (strcmp(tokens[0], "QM"))
+ return NULL;
+
+ if ((e = strstr(tokens[1], "Out of range"))) {
+ is_oor = TRUE;
+ fvalue = -1;
+ } else {
+ is_oor = FALSE;
+ fvalue = strtof(tokens[1], &e);
+ if (fvalue == 0.0 && e == tokens[1]) {
+ /* Happens all the time, when switching modes. */
+ sr_dbg("Invalid float.");
+ return NULL;
+ }
+ }
+ while(*e && *e == ' ')
+ e++;
+
+ /* TODO: Check malloc return value. */
+ analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
+ analog->num_samples = 1;
+ /* TODO: Check malloc return value. */
+ analog->data = g_try_malloc(sizeof(float));
+ if (is_oor)
+ *analog->data = NAN;
+ else
+ *analog->data = fvalue;
+ analog->mq = -1;
+
+ if ((u = strstr(e, "V DC")) || (u = strstr(e, "V AC"))) {
+ analog->mq = SR_MQ_VOLTAGE;
+ analog->unit = SR_UNIT_VOLT;
+ if (!is_oor && e[0] == 'm')
+ *analog->data /= 1000;
+ /* This catches "V AC", "V DC" and "V AC+DC". */
+ if (strstr(u, "AC"))
+ analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
+ if (strstr(u, "DC"))
+ analog->mqflags |= SR_MQFLAG_DC;
+ } else if ((u = strstr(e, "dBV")) || (u = strstr(e, "dBm"))) {
+ analog->mq = SR_MQ_VOLTAGE;
+ if (u[2] == 'm')
+ analog->unit = SR_UNIT_DECIBEL_MW;
+ else
+ analog->unit = SR_UNIT_DECIBEL_VOLT;
+ analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
+ } else if ((u = strstr(e, "Ohms"))) {
+ analog->mq = SR_MQ_RESISTANCE;
+ analog->unit = SR_UNIT_OHM;
+ if (is_oor)
+ *analog->data = INFINITY;
+ else if (e[0] == 'k')
+ *analog->data *= 1000;
+ else if (e[0] == 'M')
+ *analog->data *= 1000000;
+ } else if (!strcmp(e, "nS")) {
+ analog->mq = SR_MQ_CONDUCTANCE;
+ analog->unit = SR_UNIT_SIEMENS;
+ *analog->data /= 1e+9;
+ } else if ((u = strstr(e, "Farads"))) {
+ analog->mq = SR_MQ_CAPACITANCE;
+ analog->unit = SR_UNIT_FARAD;
+ if (!is_oor) {
+ if (e[0] == 'm')
+ *analog->data /= 1e+3;
+ else if (e[0] == 'u')
+ *analog->data /= 1e+6;
+ else if (e[0] == 'n')
+ *analog->data /= 1e+9;
+ }
+ } else if ((u = strstr(e, "Deg C")) || (u = strstr(e, "Deg F"))) {
+ analog->mq = SR_MQ_TEMPERATURE;
+ if (u[4] == 'C')
+ analog->unit = SR_UNIT_CELSIUS;
+ else
+ analog->unit = SR_UNIT_FAHRENHEIT;
+ } else if ((u = strstr(e, "A AC")) || (u = strstr(e, "A DC"))) {
+ analog->mq = SR_MQ_CURRENT;
+ analog->unit = SR_UNIT_AMPERE;
+ /* This catches "A AC", "A DC" and "A AC+DC". */
+ if (strstr(u, "AC"))
+ analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
+ if (strstr(u, "DC"))
+ analog->mqflags |= SR_MQFLAG_DC;
+ if (!is_oor) {
+ if (e[0] == 'm')
+ *analog->data /= 1e+3;
+ else if (e[0] == 'u')
+ *analog->data /= 1e+6;
+ }
+ } else if ((u = strstr(e, "Hz"))) {
+ analog->mq = SR_MQ_FREQUENCY;
+ analog->unit = SR_UNIT_HERTZ;
+ if (e[0] == 'k')
+ *analog->data *= 1e+3;
+ } else if (!strcmp(e, "%")) {
+ analog->mq = SR_MQ_DUTY_CYCLE;
+ analog->unit = SR_UNIT_PERCENTAGE;
+ } else if ((u = strstr(e, "ms"))) {
+ analog->mq = SR_MQ_PULSE_WIDTH;
+ analog->unit = SR_UNIT_SECOND;
+ *analog->data /= 1e+3;
+ }
+
+ if (analog->mq == -1) {
+ /* Not a valid measurement. */
+ g_free(analog->data);
+ g_free(analog);
+ analog = NULL;
+ }
+
+ return analog;
+}
+