Version 0.1.0 from FTP

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@6 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 412 insertions, 0 deletions

diff --git a/tonezone.c b/tonezone.c
new file mode 100755
index 0000000..e601de9
--- /dev/null
+++ b/tonezone.c
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+/*
+ * BSD Telephony Of Mexico "Tormenta" Tone Zone Support 2/22/01
+ * 
+ * Working with the "Tormenta ISA" Card 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under thet erms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ * Primary Author: Mark Spencer <markster@linux-support.net>
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include "tonezone.h"
+
+#define DEFAULT_ZT_DEV "/dev/zap/ctl"
+
+#define MAX_SIZE 16384
+#define CLIP 32635
+#define BIAS 0x84
+
+static float loudness=8192.0;
+   
+unsigned char
+linear2ulaw(sample)
+short sample; {
+  static int exp_lut[256] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
+                             4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
+                             5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+                             5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+                             6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+                             6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+                             6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+                             6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+                             7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7};
+  int sign, exponent, mantissa;
+  unsigned char ulawbyte;
+ 
+  /* Get the sample into sign-magnitude. */
+  sign = (sample >> 8) & 0x80;          /* set aside the sign */
+  if (sign != 0) sample = -sample;              /* get magnitude */
+  if (sample > CLIP) sample = CLIP;             /* clip the magnitude */
+ 
+  /* Convert from 16 bit linear to ulaw. */
+  sample = sample + BIAS;
+  exponent = exp_lut[(sample >> 7) & 0xFF];
+  mantissa = (sample >> (exponent + 3)) & 0x0F;
+  ulawbyte = ~(sign | (exponent << 4) | mantissa);
+#ifdef ZEROTRAP
+  if (ulawbyte == 0) ulawbyte = 0x02;   /* optional CCITT trap */
+#endif
+ 
+  return(ulawbyte);
+}                                                                                            
+
+
+
+static int calc_samples(int freq)
+{
+	int x, samples;
+	/* Calculate the number of samples at 8000hz sampling
+	   we need to have this wave form */
+	samples = 8000;
+	/* Take out common 2's up to six times */
+	for (x=0;x<6;x++) 
+		if (!(freq % 2)) {
+			freq /= 2;
+			samples /= 2;
+		}
+	/* Take out common 5's (up to three times */
+	for (x=0;x<3;x++) 
+		if (!(freq % 5)) {
+			freq /= 5;
+			samples /=5;
+		}
+	/* No more common factors. */
+	return samples;
+}
+
+
+
+struct tone_zone *tone_zone_find(char *country)
+{
+	struct tone_zone *z;
+	z = builtin_zones;
+	while(z->zone > -1) {
+		if (!strcasecmp(country, z->country))
+			return z;
+		z++;
+	}
+	return NULL;
+}
+
+struct tone_zone *tone_zone_find_by_num(int id)
+{
+	struct tone_zone *z;
+	z = builtin_zones;
+	while(z->zone > -1) {
+		if (z->zone == id)
+			return z;
+		z++;
+	}
+	return NULL;
+}
+
+static int build_tone(char *data, int size, struct tone_zone_sound *t, int *count)
+{
+	char *dup, *s;
+	struct zt_tone_def *td=NULL;
+	int firstnobang = -1;
+	int freq1, freq2, time;
+	int samples, samples1, samples2;
+	int x;
+	int used = 0;
+	float val;
+	dup = strdup(t->data);
+	s = strtok(dup, ",");
+	while(s && strlen(s)) {
+		/* Handle optional ! which signifies don't start here*/
+		if (s[0] == '!') 
+			s++;
+		else if (firstnobang < 0) {
+#if 0
+			printf("First no bang: %s\n", s);
+#endif			
+			firstnobang = *count;
+		}
+		if (sscanf(s, "%d+%d/%d", &freq1, &freq2, &time) == 3) {
+			/* f1+f2/time format */
+#if 0
+			printf("f1+f2/time format: %d, %d, %d\n", freq1, freq2, time);
+#endif			
+		} else if (sscanf(s, "%d+%d", &freq1, &freq2) == 2) {
+#if 0
+			printf("f1+f2 format: %d, %d\n", freq1, freq2);
+#endif			
+			time = 0;
+		} else if (sscanf(s, "%d/%d", &freq1, &time) == 2) {
+#if 0
+			printf("f1/time format: %d, %d\n", freq1, time);
+#endif			
+			freq2 = 0;
+		} else if (sscanf(s, "%d", &freq1) == 1) {
+#if 0		
+			printf("f1 format: %d\n", freq1);
+#endif			
+			firstnobang = *count;
+			freq2 = 0;
+			time = 0;
+		} else {
+			fprintf(stderr, "tone component '%s' of '%s' is a syntax error\n", s,t->data);
+			return -1;
+		}
+		if (freq1)
+			samples1 = calc_samples(freq1);
+		else
+			samples1 = 40;
+		if (freq2)
+			samples2 = calc_samples(freq2);
+		else
+			samples2 = 0;
+		samples = samples1;
+		if (freq2) {
+			while(samples % samples2)
+				samples += samples1;
+		}
+#if 0
+		printf("Using %d samples for %d and %d\n", samples, freq1, freq2);
+#endif
+		if (size < samples + sizeof(struct zt_tone_def)) {
+			fprintf(stderr, "Not enough space for samples\n");
+			return -1;
+		}
+		td = (struct zt_tone_def *)data;
+		data += (sizeof(struct zt_tone_def) + samples);
+		used += (sizeof(struct zt_tone_def) + samples);
+		size -= (sizeof(struct zt_tone_def) + samples);
+		td->size = samples;
+		td->tone = t->toneid;
+		if (time) {
+			/* We should move to the next tone */
+			td->next = *count + 1;
+			td->samples = time * 8;
+		} else {
+			/* Stay with us */
+			td->next = *count;
+			td->samples = samples;
+		}
+		for (x=0;x<samples;x++) {
+			val = 0.0;
+			if (freq1)
+				val = loudness * sin((freq1 * 2.0 * M_PI * x)/8000.0);
+			if (freq2)
+				val += loudness * sin((freq2 * 2.0 * M_PI * x)/8000.0);
+			td->data[x] = linear2ulaw((int)val);
+		}
+		(*count)++;
+		s = strtok(NULL, ",");
+	}
+	if (td && time) {
+		/* If we don't end on a solid tone, return */
+		td->next = firstnobang;
+	}
+	return used;
+}
+
+char *tone_zone_tone_name(int id)
+{
+	static char tmp[80];
+	switch(id) {
+	case ZT_TONE_DIALTONE:
+		return "Dialtone";
+	case ZT_TONE_BUSY:
+		return "Busy";
+	case ZT_TONE_RINGTONE:
+		return "Ringtone";
+	case ZT_TONE_CONGESTION:
+		return "Congestion";
+	case ZT_TONE_CALLWAIT:
+		return "Call Waiting";
+	case ZT_TONE_DIALRECALL:
+		return "Dial Recall";
+	case ZT_TONE_RECORDTONE:
+		return "Record Tone";
+	case ZT_TONE_CUST1:
+		return "Custom 1";
+	case ZT_TONE_CUST2:
+		return "Custom 2";
+	case ZT_TONE_INFO:
+		return "Special Information";
+	default:
+		snprintf(tmp, sizeof(tmp), "Unknown tone %d", id);
+		return tmp;
+	}
+}
+
+#ifdef TONEZONE_DRIVER
+static void dump_tone_zone(void *data)
+{
+	struct zt_tone_def_header *z;
+	struct zt_tone_def *td;
+	int x;
+	int len=0;
+	z = data;
+	data += sizeof(*z);
+	printf("Header: %d tones, %d bytes of data, zone %d (%s)\n", 
+		z->count, z->size, z->zone, z->name);
+	for (x=0;x < z->count; x++) {
+		td = data;
+		printf("Tone Fragment %d: %d bytes, %s tone, next is %d, %d samples total\n",
+			x, td->size, tone_name(td->tone), td->next, td->samples);
+		data += sizeof(*td);
+		data += td->size;
+		len += td->size;
+	}
+	printf("Total measured bytes of data: %d\n", len);
+}
+#endif
+
+int tone_zone_register_zone(int fd, struct tone_zone *z)
+{
+	char buf[MAX_SIZE];
+	int res;
+	int count=0;
+	int x;
+	int used = 0;
+	int iopenedit = 0;
+	int space = MAX_SIZE;
+	char *ptr = buf;
+	struct zt_tone_def_header *h;
+	if (fd < 0) {
+		fd = open(DEFAULT_ZT_DEV, O_RDWR);
+		iopenedit=1;
+		if (fd < 0) {
+			fprintf(stderr, "Unable to open %s and fd not provided\n", DEFAULT_ZT_DEV);
+			return -1;
+		}
+	}
+	h = (struct zt_tone_def_header *)ptr;
+	ptr += sizeof(struct zt_tone_def_header);
+	space -= sizeof(struct zt_tone_def_header);
+	used += sizeof(struct zt_tone_def_header);
+	/*
+	 * Fill in ring cadence 
+	 */
+	for (x=0;x<ZT_MAX_CADENCE;x++) 
+		h->ringcadence[x] = z->ringcadence[x];
+	/* Put in an appropriate method for a kernel ioctl */
+	for (x=0;x<ZT_TONE_MAX;x++) {
+		if (strlen(z->tones[x].data)) {
+			/* It's a real tone */
+#if 0
+			printf("Tone: %d, string: %s\n", z->tones[x].toneid, z->tones[x].data);
+#endif			
+			res = build_tone(ptr, space, &z->tones[x], &count);
+			if (res < 0) {
+				fprintf(stderr, "Tone not built.\n");
+				if (iopenedit)
+					close(fd);
+				return -1;
+			}
+			ptr += res;
+			used += res;
+			space -= res;
+		}
+	}
+	h->count = count;
+	h->size = used - sizeof(struct zt_tone_def_header) - count * sizeof(struct zt_tone_def);
+	h->zone = z->zone;
+	strncpy(h->name, z->description, sizeof(h->name));
+	x = z->zone;
+	ioctl(fd, ZT_FREEZONE, &x);
+	res = ioctl(fd, ZT_LOADZONE, h);
+	if (res) 
+		fprintf(stderr, "ioctl(ZT_LOADZONE) failed: %s\n", strerror(errno));
+	if (iopenedit)
+		close(fd);
+	return res;
+}
+
+int tone_zone_register(int fd, char *country)
+{
+	struct tone_zone *z;
+	z = tone_zone_find(country);
+	if (z) {
+		return tone_zone_register_zone(-1, z);
+	} else {
+		return -1;
+	}
+}
+
+
+
+int tone_zone_set_zone(int fd, char *country)
+{
+	int res=-1;
+	struct tone_zone *z;
+	if (fd > -1) {
+		z = tone_zone_find(country);
+		if (z)
+			res = ioctl(fd, ZT_SETTONEZONE, &z->zone);
+		if ((res < 0) && (errno == ENODATA)) {
+			tone_zone_register_zone(fd, z);
+			res = ioctl(fd, ZT_SETTONEZONE, &z->zone);
+		}
+	}
+	return res;
+}
+
+int tone_zone_get_zone(int fd)
+{
+	int x=-1;
+	if (fd > -1) {
+		ioctl(fd, ZT_GETTONEZONE, &x);
+		return x;
+	}
+	return -1;
+}
+
+int tone_zone_play_tone(int fd, int tone)
+{
+	struct tone_zone *z;
+	int res = -1;
+	int zone;
+#if 0
+	fprintf(stderr, "Playing tone %d (%s) on %d\n", tone, tone_zone_tone_name(tone), fd);
+#endif
+	if (fd > -1) {
+		res = ioctl(fd, ZT_SENDTONE, &tone);
+		if ((res < 0) && (errno == ENODATA)) {
+			ioctl(fd, ZT_GETTONEZONE, &zone);
+			z = tone_zone_find_by_num(zone);
+			if (z) {
+				res = tone_zone_register_zone(fd, z);
+				/* Recall the zone */
+				ioctl(fd, ZT_SETTONEZONE, &zone);
+				if (res < 0) {
+					fprintf(stderr, "Failed to register zone '%s': %s\n", z->description, strerror(errno));
+				} else {
+					res = ioctl(fd, ZT_SENDTONE, &tone);
+				}
+			} else
+				fprintf(stderr, "Don't know anything about zone %d\n", zone);
+		}
+	}
+	return res;
+}