Restructure: Move sdr from common code to 'libsdr'

src/libsdr/sdr_config.h

@@ -0,0 +1,32 @@
+
+typedef struct sdr_config {
+	int		uhd,			/* select UHD API */
+			soapy;			/* select Soapy SDR API */
+	int		channel;		/* channel number */
+	const char	*device_args,		/* arguments */
+			*stream_args,
+			*tune_args;
+	int		samplerate;		/* ADC/DAC sample rate */
+	double		bandwidth;		/* IF bandwidth */
+	double		tx_gain,		/* gain */
+			rx_gain;
+	const char	*tx_antenna,		/* list/override antennas */
+			*rx_antenna;
+	const char	*write_iq_tx_wave;	/* wave recording and playback */
+	const char	*write_iq_rx_wave;
+	const char	*read_iq_tx_wave;
+	const char	*read_iq_rx_wave;
+	int		swap_links;		/* swap DL and UL frequency */
+	int		uhd_tx_timestamps;	/* use UHD time stamps */
+} sdr_config_t;
+
+extern sdr_config_t *sdr_config;
+
+void sdr_config_init(void);
+void sdr_config_print_help(void);
+void sdr_config_print_hotkeys(void);
+extern struct option sdr_config_long_options[];
+extern const char *sdr_config_optstring;
+int sdr_config_opt_switch(int c, int *skip_args);
+int sdr_configure(int samplerate);
+