common.c

#include <stdio.h>
#include <syslog.h>
#include <stdarg.h>

#include "libvoice.h"

struct terminal_info_t terminal_info = { .num_terminals = 0, };
struct line_t *lines = NULL; // Array of phone lines including FXS and DECT
struct connection_t *connections = NULL;
int max_num_connections = 0;

const struct voice_event_t event_map[] = { // List of events from the voice engine
	{ .name = "DTMF0",         .event = VOICE_EVT_DTMF0       },
	{ .name = "DTMF1",         .event = VOICE_EVT_DTMF1       },
	{ .name = "DTMF2",         .event = VOICE_EVT_DTMF2       },
	{ .name = "DTMF3",         .event = VOICE_EVT_DTMF3       },
	{ .name = "DTMF4",         .event = VOICE_EVT_DTMF4       },
	{ .name = "DTMF5",         .event = VOICE_EVT_DTMF5       },
	{ .name = "DTMF6",         .event = VOICE_EVT_DTMF6       },
	{ .name = "DTMF7",         .event = VOICE_EVT_DTMF7       },
	{ .name = "DTMF8",         .event = VOICE_EVT_DTMF8       },
	{ .name = "DTMF9",         .event = VOICE_EVT_DTMF9       },
	{ .name = "DTMFS",         .event = VOICE_EVT_DTMFS       },
	{ .name = "DTMFH",         .event = VOICE_EVT_DTMFH       },
	{ .name = "DTMFA",         .event = VOICE_EVT_DTMFA       },
	{ .name = "DTMFB",         .event = VOICE_EVT_DTMFB       },
	{ .name = "DTMFC",         .event = VOICE_EVT_DTMFC       },
	{ .name = "DTMFD",         .event = VOICE_EVT_DTMFD       },
	{ .name = "OFFHOOK",       .event = VOICE_EVT_OFFHOOK     },
	{ .name = "ONHOOK",        .event = VOICE_EVT_ONHOOK      },
	{ .name = "FLASH",         .event = VOICE_EVT_FLASH       },
	{ .name = "MEDIA",         .event = VOICE_EVT_MEDIA_START },
	{ .name = "",              .event = VOICE_EVT_END         }
};

const struct dect_event_t dect_event_map[] = {
	{ .name = "SWITCH",        .event = DECT_EVT_SWITCH       },
	{ .name = "JOIN",          .event = DECT_EVT_JOIN         },
	{ .name = "RELEASE",       .event = DECT_EVT_RELEASE      },
	{ .name = "",              .event = DECT_EVT_END          }
};

// Callback function which is invoked when an event is detected from the voice engine
void (*voice_cb_event_report)(int line, const char *event, int data) = NULL;

void voice_syslog(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	vsyslog(LOG_DEBUG, fmt, ap);
	va_end(ap);
}

int voice_connection_find(int line, int conId)
{
	int conIdx;

	for(conIdx = 0; conIdx < max_num_connections; conIdx++) {
		if(connections[conIdx].line == line && connections[conIdx].connection_id == conId) {
			return conIdx;
		}
	}

	return -1;
}

// Pre-initialization of data structures
int voice_line_preinit(void) {
	int i;

	if(terminal_info.num_terminals <= 0) {
		ENDPT_DBG("%s: terminal_info.num_terminals = %d\n", __func__, terminal_info.num_terminals);
		return -1;
	}

	// Initialize all contents as 0 by calloc
	lines = calloc(terminal_info.num_terminals, sizeof(struct line_t));
	if(!lines) {
		ENDPT_DBG("%s: out out memory\n", __func__);
		return -1;
	}
	for(i = 0; i < terminal_info.num_terminals; i++) {
		lines[i].type = VOICE_LINE_UNKNOWN;
		lines[i].pcm_state[PCM_0] = LINE_PCM_STATE_NOT_USED;
		lines[i].pcm_state[PCM_1] = LINE_PCM_STATE_NOT_USED;
	}

	return 0;
}

// Shut down and free resources
int voice_line_deinit(void) {
	char *digits;
	int line;

	// Free all line resources we have allocated
	for (line = 0; line < terminal_info.num_terminals; line++) {
		if(lines[line].pending_digits) {
			do {
				digits = pe_list_get(lines[line].pending_digits);
				free(digits);
			} while(digits);
			free(lines[line].pending_digits);
			lines[line].pending_digits = NULL;
		}

		voice_line_close(line);

		if (lines[line].line_conf.name) {
			free(lines[line].line_conf.name);
			lines[line].line_conf.name = NULL;
		}
	}
	free(lines);
	lines = NULL;

	return 0;
}

// Register the callback function for event report
int voice_register_cb_event_report(void (*cb_event_report)(int line, const char *event, int data)) {
	voice_cb_event_report = cb_event_report;

	return 0;
}