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path: root/src/libgsmd/libgsmd_voicecall.c
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/* libgsmd voice call support
 *
 * (C) 2006-2007 by OpenMoko, Inc.
 * Written by Harald Welte <laforge@openmoko.org>
 * All Rights Reserved
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */ 

#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <libgsmd/voicecall.h>

#include "lgsm_internals.h"

int lgsm_send_simple(struct lgsm_handle *lh, int type, int sub_type)
{
	struct gsmd_msg_hdr *gmh;
	int rc;

	gmh = lgsm_gmh_fill(type, sub_type, 0);
	if (!gmh)
		return -ENOMEM;
	rc = lgsm_send(lh, gmh);
	if (rc < gmh->len + sizeof(*gmh)) {
		lgsm_gmh_free(gmh);
		return -EIO;
	}
	lgsm_gmh_free(gmh);

	return 0;
}

int lgsm_voice_out_init(struct lgsm_handle *lh,
			const struct lgsm_addr *number)
{
	struct gsmd_msg_hdr *gmh;
	struct gsmd_addr *ga;
	int rc;

	gmh = lgsm_gmh_fill(GSMD_MSG_VOICECALL,
			    GSMD_VOICECALL_DIAL, sizeof(*ga));
	if (!gmh)
		return -ENOMEM;
	ga = (struct gsmd_addr *) gmh->data;
	ga->type = number->type;	/* FIXME: is this correct? */
	memcpy(ga->number, number->addr, sizeof(ga->number));
	ga->number[sizeof(ga->number)-1] = '\0';

	rc = lgsm_send(lh, gmh);
	if (rc < gmh->len + sizeof(*gmh)) {
		lgsm_gmh_free(gmh);
		return -EIO;
	}

	lgsm_gmh_free(gmh);

	return 0;
}

int lgsm_voice_dtmf(struct lgsm_handle *lh, char dtmf_char)
{
	struct gsmd_msg_hdr *gmh;
	struct gsmd_dtmf *gd;
	int rc;

	gmh = lgsm_gmh_fill(GSMD_MSG_VOICECALL,
			    GSMD_VOICECALL_DTMF, sizeof(*gd)+1);
	if (!gmh)
		return -ENOMEM;
	gd = (struct gsmd_dtmf *) gmh->data;
	gd->len = 1;
	gd->dtmf[0] = dtmf_char;

	rc = lgsm_send(lh, gmh);
	if (rc < gmh->len + sizeof(*gd)+1) {
		lgsm_gmh_free(gmh);;
		return -EIO;
	}

	lgsm_gmh_free(gmh);

	return 0;
}

int lgsm_voice_in_accept(struct lgsm_handle *lh)
{
	return lgsm_send_simple(lh, GSMD_MSG_VOICECALL, GSMD_VOICECALL_ANSWER);
}

int lgsm_voice_hangup(struct lgsm_handle *lh)
{
	return lgsm_send_simple(lh, GSMD_MSG_VOICECALL, GSMD_VOICECALL_HANGUP);
}
personal git repositories of Harald Welte. Your mileage may vary