Make it easier to change tone levels in gendigits (bug #3072)

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@524 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 15 insertions, 7 deletions

diff --git a/gendigits.c b/gendigits.c
index 7433e50..73141d2 100755
--- a/gendigits.c
+++ b/gendigits.c
@@ -95,9 +95,7 @@ short sample; {
   return(ulawbyte);
 }                                                                                            
 
-#define LEVEL -10
-
-int process(FILE *f, char *label, ZAP_DIAL z[])
+int process(FILE *f, char *label, ZAP_DIAL z[], float low_tone_level, float high_tone_level)
 {
 	char c;
 	float gain;
@@ -111,12 +109,12 @@ int process(FILE *f, char *label, ZAP_DIAL z[])
 		if (c == '#')
 			c ='p';
 		/* Bring it down 6 dbm */
-		gain = pow(10.0, (LEVEL - 3.14) / 20.0) * 65536.0 / 2.0;
-
+		gain = pow(10.0, (low_tone_level - 3.14) / 20.0) * 65536.0 / 2.0;
 		fac1 = 2.0 * cos(2.0 * M_PI * (z->f1 / 8000.0)) * 32768.0;
 		init_v2_1 = sin(-4.0 * M_PI * (z->f1 / 8000.0)) * gain;
 		init_v3_1 = sin(-2.0 * M_PI * (z->f1 / 8000.0)) * gain;
 		
+		gain = pow(10.0, (high_tone_level - 3.14) / 20.0) * 65536.0 / 2.0;
 		fac2 = 2.0 * cos(2.0 * M_PI * (z->f2 / 8000.0)) * 32768.0;
 		init_v2_2 = sin(-4.0 * M_PI * (z->f2 / 8000.0)) * gain;
 		init_v3_2 = sin(-2.0 * M_PI * (z->f2 / 8000.0)) * gain;
@@ -131,6 +129,16 @@ int process(FILE *f, char *label, ZAP_DIAL z[])
 	return 0;
 }
 
+/* The following are the levels for the low tones (LEVEL1) and the high tones
+   (LEVEL2) of DTMF digits, in dBm0. If you need to adjust these levels, this
+   is the place to do it */
+#define LEVEL_DTMF_LOW      -10
+#define LEVEL_DTMF_HIGH     -10
+
+/* The following is the level for the tones in MF digits, in dBm0. If you
+   need to adjust this level, this is the place to do it */
+#define LEVEL_MF            -10
+
 int main(int argc, char *argv[])
 {
 	FILE *f;
@@ -139,10 +147,10 @@ int main(int argc, char *argv[])
 		fprintf(f, "/* DTMF and MF tones used by the Tormenta Driver, in static tables.\n"
 				   "   Generated automatically from gendigits.  Do not edit by hand.  */\n"); 
 		fprintf(f, "static struct zt_tone dtmf_tones[16] = {\n");
-		process(f, "dtmf", dtmf_dial);
+		process(f, "dtmf", dtmf_dial, LEVEL_DTMF_LOW, LEVEL_DTMF_HIGH);
 		fprintf(f, "};\n\n");
 		fprintf(f, "static struct zt_tone mfv1_tones[15] = {\n");
-		process(f, "mfv1", mf_dial);
+		process(f, "mfv1", mf_dial, LEVEL_MF, LEVEL_MF);
 		fprintf(f, "};\n\n");
 		fprintf(f, "/* END tones.h */\n");
 		fclose(f);