Make LCR work with the current openbsc lcr_rtp branch. (soon merged with master branch)

[lcr.git] / gsm.cpp

diff --git a/gsm.cpp b/gsm.cpp
index 50a8b1d..b1895f8 100644 (file)
--- 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);