Add two widely used constants

#define DEFAULT_SAMPLE_RATE 8000
#define DEFAULT_SAMPLES_PER_MS  ((DEFAULT_SAMPLE_RATE)/1000)

to the main header, and remove equivalent ones from plc.[ch]

This will simplify the cleanup of the codec/ and formats/ files.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@15969 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk.h

@@ -20,6 +20,9 @@
 
 #define DEFAULT_LANGUAGE "en"
 
+#define DEFAULT_SAMPLE_RATE 8000
+#define DEFAULT_SAMPLES_PER_MS  ((DEFAULT_SAMPLE_RATE)/1000)
+
 #define AST_CONFIG_MAX_PATH 255
 
 /* provided in asterisk.c */

include/asterisk/plc.h

@@ -95,8 +95,6 @@ When a real packet is not available in time, call plc_fillin() to create a sythe
 That's it!
 */
 
-#define SAMPLE_RATE     8000
-
 /*! Minimum allowed pitch (66 Hz) */
 #define PLC_PITCH_MIN           120
 /*! Maximum allowed pitch (200 Hz) */

plc.c

@@ -56,7 +56,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 /* We do a straight line fade to zero volume in 50ms when we are filling in for missing data. */
 #define ATTENUATION_INCREMENT       0.0025			      /* Attenuation per sample */
 
-#define ms_to_samples(t)	    (((t)*SAMPLE_RATE)/1000)
+#define ms_to_samples(t)	    (((t)*DEFAULT_SAMPLE_RATE)/1000)
 
 static inline int16_t fsaturate(double damp)
 {