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authorAndreas Eversberg2009-12-20 18:55:03 +0100
committerAndreas Eversberg2009-12-20 18:55:03 +0100
commitab670ecfdc8c7e299bc1b9ddea014980ad7637fa (patch)
tree8e5214d70a85a9325eb9f486fb388995a4cb3228 /gsm.cpp
parentFixed minor release BUG in SS5. Added comfort noise. (diff)
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Make LCR work with the current openbsc lcr_rtp branch. (soon merged with master branch)
Minor fix in ss5.cpp.
Diffstat (limited to 'gsm.cpp')
-rw-r--r--gsm.cpp89
1 files changed, 19 insertions, 70 deletions
diff --git a/gsm.cpp b/gsm.cpp
index 50a8b1d..b1895f8 100644
--- a/gsm.cpp
+++ b/gsm.cpp
@@ -185,9 +185,7 @@ int Pgsm::bchannel_open(int index)
/* receive from bchannel */
void Pgsm::bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len)
{
- int i, j, k;
unsigned char frame[33];
- struct decoded_trau_frame tf;
/* encoder init failed */
if (!p_m_g_encoder)
@@ -205,31 +203,7 @@ void Pgsm::bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len)
/* encode data */
gsm_audio_encode(p_m_g_encoder, p_m_g_rxdata, frame);
-
- /* set c-bits and t-bits */
- tf.c_bits[0] = 1;
- tf.c_bits[1] = 1;
- tf.c_bits[2] = 1;
- tf.c_bits[3] = 0;
- tf.c_bits[4] = 0;
- memset(&tf.c_bits[5], 0, 6);
- memset(&tf.c_bits[11], 1, 10);
- memset(&tf.t_bits[0], 1, 4);
-
- /* reassemble d-bits */
- i = 0;
- j = 0;
- k = 0;
- while(i < 260) {
- tf.d_bits[i] = (frame[j] >> k) & 1;
- if (++k == 8) {
- k = 0;
- j++;
- }
- i++;
- }
-
- trau_send(&tf);
+ frame_send(frame);
}
}
}
@@ -253,57 +227,33 @@ void Pgsm::bchannel_send(unsigned int prim, unsigned int id, unsigned char *data
PERROR("Failed to send to socket index %d\n", index);
}
-void Pgsm::trau_send(void *_tf)
+void Pgsm::frame_send(void *_frame)
{
- struct decoded_trau_frame *tf = (struct decoded_trau_frame *)_tf;
- unsigned char data[sizeof(struct gsm_trau_frame) + sizeof(struct decoded_trau_frame)];
- struct gsm_trau_frame *frame = (struct gsm_trau_frame *)data;
+ unsigned char buffer[sizeof(struct gsm_data_frame) + 33];
+ struct gsm_data_frame *frame = (struct gsm_data_frame *)buffer;
- frame->msg_type = GSM_TRAU_FRAME;
+ frame->msg_type = GSM_TCHF_FRAME;
frame->callref = p_m_g_callref;
- memcpy(frame->data, tf, sizeof(struct decoded_trau_frame));
+ memcpy(frame->data, _frame, 33);
mncc_send((struct gsm_network *)gsm->network, frame->msg_type, frame);
}
-void Pgsm::trau_receive(void *_frame)
+void Pgsm::frame_receive(void *_frame)
{
- struct gsm_trau_frame *frm = (struct gsm_trau_frame *)_frame;
- struct decoded_trau_frame *tf = (struct decoded_trau_frame *)frm->data;
-//struct decoded_trau_frame *tf = (struct decoded_trau_frame *)_frame;
- unsigned char frame[33];
+ struct gsm_data_frame *frame = (struct gsm_data_frame *)_frame;
signed short samples[160];
unsigned char data[160];
- int i, j, k;
+ int i;
if (!p_m_g_decoder)
return;
-// printf("got trau %d %d %d %d %d\n", tf->c_bits[0], tf->c_bits[1], tf->c_bits[2], tf->c_bits[3], tf->c_bits[4]);
- if (tf->c_bits[0]!=0 || tf->c_bits[1]!=0 || tf->c_bits[2]!=0 || tf->c_bits[3]!=1 || tf->c_bits[4]!=0)
- PERROR("illegal trau (C1-C5) %d %d %d %d %d\n", tf->c_bits[0], tf->c_bits[1], tf->c_bits[2], tf->c_bits[3], tf->c_bits[4]);
-
- /* set GSM_MAGIC */
- memset(&frame, 0, sizeof(frame));
-// frame[0] = 0xd << 4;
-
- /* reassemble bits */
- i = 0;
- j = 0;
- k = 0;
- while(i < 260) {
- if (tf->d_bits[i] > 1)
- PERROR("fix!\n");
- frame[j] |= (tf->d_bits[i] << k);
- if (++k == 8) {
- k = 0;
- j++;
- }
- i++;
- }
+ if ((frame->data[0]>>4) != 0xd)
+ PERROR("received GSM frame with wrong magig 0x%x\n", frame->data[0]>>4);
/* decode */
- gsm_audio_decode(p_m_g_decoder, frame, samples);
+ gsm_audio_decode(p_m_g_decoder, frame->data, samples);
for (i = 0; i < 160; i++) {
data[i] = audio_s16_to_law[samples[i] & 0xffff];
}
@@ -906,9 +856,9 @@ static int message_bsc(struct gsm_network *net, int msg_type, void *arg)
port = port->next;
}
- if (msg_type == GSM_TRAU_FRAME) {
+ if (msg_type == GSM_TCHF_FRAME) {
if (port)
- pgsm->trau_receive((struct gsm_trau_frame *)arg);
+ pgsm->frame_receive((struct gsm_trau_frame *)arg);
return 0;
}
@@ -1677,13 +1627,8 @@ int gsm_init(void)
e1_set_pcap_fd(pcapfd);
}
- /* set reject cause */
- if (gsm->conf.reject_cause)
- gsm0408_set_reject_cause(gsm->conf.reject_cause);
-
/* use RTP proxy for audio streaming */
- if (gsm->conf.rtp_proxy)
- ipacc_rtp_direct = 0;
+ ipacc_rtp_direct = 0;
/* init database */
if (gsm->conf.hlr[0] == '/')
@@ -1713,6 +1658,10 @@ int gsm_init(void)
}
gsm->network = bsc_gsmnet;
+ /* set reject cause */
+ if (gsm->conf.reject_cause)
+ gsm0408_set_reject_cause(gsm->conf.reject_cause);
+
/* open gsm loop interface */
if (gsm_sock_open(gsm->conf.interface_bsc)) {
return gsm_exit(-1);