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* BlueZ - Bluetooth protocol stack for Linux
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* Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/hci.h>
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#include <bluetooth/hci_lib.h>
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#include <bluetooth/sco.h>
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#include <bluetooth/rfcomm.h>
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static volatile int terminate = 0;
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static void sig_term(int sig) {
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static int rfcomm_connect(bdaddr_t *src, bdaddr_t *dst, uint8_t channel)
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struct sockaddr_rc addr;
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if ((s = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0) {
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memset(&addr, 0, sizeof(addr));
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addr.rc_family = AF_BLUETOOTH;
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bacpy(&addr.rc_bdaddr, src);
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if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
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memset(&addr, 0, sizeof(addr));
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addr.rc_family = AF_BLUETOOTH;
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bacpy(&addr.rc_bdaddr, dst);
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addr.rc_channel = channel;
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if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0 ){
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static int sco_connect(bdaddr_t *src, bdaddr_t *dst, uint16_t *handle, uint16_t *mtu)
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struct sockaddr_sco addr;
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struct sco_conninfo conn;
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struct sco_options opts;
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if ((s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO)) < 0) {
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memset(&addr, 0, sizeof(addr));
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addr.sco_family = AF_BLUETOOTH;
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bacpy(&addr.sco_bdaddr, src);
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if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
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memset(&addr, 0, sizeof(addr));
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addr.sco_family = AF_BLUETOOTH;
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bacpy(&addr.sco_bdaddr, dst);
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if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0 ){
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memset(&conn, 0, sizeof(conn));
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if (getsockopt(s, SOL_SCO, SCO_CONNINFO, &conn, &size) < 0) {
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memset(&opts, 0, sizeof(opts));
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if (getsockopt(s, SOL_SCO, SCO_OPTIONS, &opts, &size) < 0) {
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*handle = conn.hci_handle;
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static void usage(void)
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"\thstest play <file> <bdaddr> [channel]\n"
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"\thstest record <file> <bdaddr> [channel]\n");
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int main(int argc, char *argv[])
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struct timeval timeout;
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unsigned char buf[2048], *p;
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int maxfd, sel, rlen, wlen;
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uint16_t sco_handle, sco_mtu, vs;
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str2ba(argv[3], &bdaddr);
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str2ba(argv[3], &bdaddr);
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channel = atoi(argv[4]);
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if (strncmp(argv[1], "play", 4) == 0) {
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} else if (strncmp(argv[1], "rec", 3) == 0) {
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filemode = O_WRONLY | O_CREAT | O_TRUNC;
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hci_devba(0, &local);
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dd = hci_open_dev(0);
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hci_read_voice_setting(dd, &vs, 1000);
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fprintf(stderr, "Voice setting: 0x%04x\n", vs);
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fprintf(stderr, "The voice setting must be 0x0060\n");
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if (strcmp(filename, "-") == 0) {
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if ((fd = open(filename, filemode)) < 0) {
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perror("Can't open input/output file");
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memset(&sa, 0, sizeof(sa));
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sa.sa_flags = SA_NOCLDSTOP;
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sa.sa_handler = sig_term;
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sigaction(SIGTERM, &sa, NULL);
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sigaction(SIGINT, &sa, NULL);
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sa.sa_handler = SIG_IGN;
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sigaction(SIGCHLD, &sa, NULL);
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sigaction(SIGPIPE, &sa, NULL);
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if ((rd = rfcomm_connect(&local, &bdaddr, channel)) < 0) {
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perror("Can't connect RFCOMM channel");
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fprintf(stderr, "RFCOMM channel connected\n");
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if ((sd = sco_connect(&local, &bdaddr, &sco_handle, &sco_mtu)) < 0) {
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perror("Can't connect SCO audio channel");
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fprintf(stderr, "SCO audio channel connected (handle %d, mtu %d)\n", sco_handle, sco_mtu);
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if (mode == RECORD) {
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if (write(rd, "RING\r\n", 6) < 0)
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maxfd = (rd > sd) ? rd : sd;
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timeout.tv_usec = 10000;
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if ((sel = select(maxfd + 1, &rfds, NULL, NULL, &timeout)) > 0) {
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if (FD_ISSET(rd, &rfds)) {
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memset(buf, 0, sizeof(buf));
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rlen = read(rd, buf, sizeof(buf));
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fprintf(stderr, "%s\n", buf);
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wlen = write(rd, "OK\r\n", 4);
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if (FD_ISSET(sd, &rfds)) {
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memset(buf, 0, sizeof(buf));
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rlen = read(sd, buf, sizeof(buf));
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rlen = read(fd, buf, rlen);
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while (rlen > sco_mtu) {
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wlen += write(sd, p, sco_mtu);
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wlen += write(sd, p, rlen);
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wlen = write(fd, buf, rlen);