HPSDR simulator: put some common things to old+new protocol into a header file.

diff --git a/hpsdrsim.h b/hpsdrsim.h
new file mode 100644 (file)
index 0000000..79e6e56
--- /dev/null
+++ b/hpsdrsim.h
@@ -0,0 +1,100 @@
+//
+// hpsdrsim.h, define global data
+//
+// From the main program, this is included with EXTERN="", while
+// other modules include is with "EXTERN=extern".
+//
+///////////////////////////////////////////////////////////////////////////
+//
+// The 800-Hz tone and the "man made noise" are for a sample rate of
+// 1536 kHz, and must be decimated when using smaller sample rates
+//
+///////////////////////////////////////////////////////////////////////////
+
+EXTERN int OLDDEVICE;
+EXTERN int NEWDEVICE;
+
+//
+// A table of (random) noise with about -90 dBm on the whole spectrum
+// This is a very long table such that there is no audible "beating"
+// pattern even at very high sample rates.
+//
+#define LENNOISE 1536000
+#define NOISEDIV (RAND_MAX / 768000)
+
+EXTERN double noiseItab[LENNOISE];
+EXTERN double noiseQtab[LENNOISE];
+
+//
+// A table of (man made) noise fed to the I samples of ADC0
+// and to the Q samples of ADC1, such that it can be eliminated
+// using DIVERSITY
+//
+EXTERN int diversity;
+
+#define LENDIV 16000
+EXTERN double divtab[LENDIV];
+//
+// An 800-Hz tone with 0 dBm
+//
+#define LENTONE 15360
+EXTERN double toneItab[LENTONE];
+EXTERN double toneQtab[LENTONE];
+
+//
+// TX fifo (needed for PURESIGNAL)
+//
+
+// RTXLEN must be an sixteen-fold multiple of 63
+// because we have 63 samples per 512-byte METIS packet,
+// and two METIS packets per TCP/UDP packet,
+// and two/four/eight-fold up-sampling if the TX sample
+// rate is 96000/192000/384000
+//
+// In the new protocol, TX samples come in bunches of
+// 240 samples. So NEWRTXLEN is defined as a multiple of
+// 240 not exceeding RTXLEN
+//
+#define OLDRTXLEN 64512 // must be larger than NEWRTXLEN
+#define NEWRTXLEN 64320
+EXTERN double  isample[OLDRTXLEN];
+EXTERN double  qsample[OLDRTXLEN];
+
+//
+// Address where to send packets from the old and new protocol
+// to the PC
+//
+EXTERN struct sockaddr_in addr_new;
+EXTERN struct sockaddr_in addr_old;
+
+//
+// Constants for conversion of TX power
+//
+EXTERN double c1,c2;
+
+//
+// Forward declarations for the audio functions
+//
+void audio_get_cards(void);
+void audio_open_output();
+void audio_write(int16_t, int16_t);
+
+//
+// Forward declarations for new protocol stuff
+//
+void   new_protocol_general_packet(unsigned char *buffer);
+int    new_protocol_running(void);
+
+#ifndef __APPLE__
+// using clock_nanosleep of librt
+extern int clock_nanosleep(clockid_t __clock_id, int __flags,
+      __const struct timespec *__req,
+      struct timespec *__rem);
+#endif
+
+//
+// Constants defining the distortion of the TX signal
+//
+#define IM3a  0.60
+#define IM3b  0.20
+