/*
 * TCH downlink recording functionality
 */

#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include "pktmux.h"
#include "tch_feature.h"

extern u_char rvi_msg[];
extern int rvi_msg_len;

static FILE *record_file;
static u_long frame_count;

void
tch_dlbits_old_handler()
{
	u_char *ptr;
	int i;

	if (!record_file)
		return;
	/* DSP status words */
	ptr = rvi_msg + 3;
	for (i = 0; i < 3; i++) {
		fprintf(record_file, "%02X%02X ", ptr[0], ptr[1]);
		ptr += 2;
	}
	/* frame bits */
	for (i = 0; i < 33; i++) {
		fprintf(record_file, "%02X", *ptr);
		ptr++;
	}
	putc('\n', record_file);
	frame_count++;
}

void
tch_dlbits_new_handler(mode_kw, databytes)
	char *mode_kw;
{
	u_char *ptr;
	int i;

	if (!record_file)
		return;
	/* channel mode */
	fprintf(record_file, "%s ", mode_kw);
	/* DSP status words */
	ptr = rvi_msg + 5;
	for (i = 0; i < 3; i++) {
		fprintf(record_file, "%02X%02X ", ptr[0], ptr[1]);
		ptr += 2;
	}
	/* frame bits */
	for (i = 0; i < databytes; i++) {
		fprintf(record_file, "%02X", *ptr);
		ptr++;
	}
	/* frame number modulo 104 */
	fprintf(record_file, " %u\n", rvi_msg[4]);
	frame_count++;
}

static void
cmd_tch_record_start(filename)
	char *filename;
{
	if (record_file) {
		printf("error: tch record session already in progress\n");
		return;
	}
	record_file = fopen(filename, "w");
	if (!record_file) {
		perror(filename);
		return;
	}
	printf("Starting TCH DL recording\n");
	tch_rx_control(1);
	send_tch_config_req(1);
	frame_count = 0;
}

static void
cmd_tch_record_stop()
{
	if (!record_file) {
		printf("error: no tch record session in progress\n");
		return;
	}
	fclose(record_file);
	record_file = 0;
	printf("TCH DL recording stopped, captured %lu speech frames\n",
		frame_count);
	send_tch_config_req(0);
}

void
cmd_tch_record(argc, argv)
	char **argv;
{
	if (argc < 2) {
		printf("error: too few arguments\n");
		return;
	}
	if (strcmp(argv[1], "stop"))
		cmd_tch_record_start(argv[1]);
	else
		cmd_tch_record_stop();
}

void
show_tch_record_status()
{
	printf("TCH DL recording: %s\n",
		record_file ? "RUNNING" : "not running");
}