<p>Pau Espin Pedrol has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/10075">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">trx: scheduler: Keep RTP clock up to date while in DTXu pause<br><br>Upper layer requires us to trigger all events coming from lower layers<br>in order to keep the RTP clock in sync. In this case, this is done by<br>sending an empty payload to indicate there's no data to send.<br><br>Change-Id: I0bdfb529f35253ca7e531bb9984a3839c3bfe7e8<br>---<br>M src/osmo-bts-trx/scheduler_trx.c<br>1 file changed, 12 insertions(+), 4 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/75/10075/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/src/osmo-bts-trx/scheduler_trx.c b/src/osmo-bts-trx/scheduler_trx.c</span><br><span>index 11c5c4e..a22b53f 100644</span><br><span>--- a/src/osmo-bts-trx/scheduler_trx.c</span><br><span>+++ b/src/osmo-bts-trx/scheduler_trx.c</span><br><span>@@ -1077,8 +1077,11 @@</span><br><span>                    /* indicate bad frame */</span><br><span>                     switch (tch_mode) {</span><br><span>                  case GSM48_CMODE_SPEECH_V1: /* FR */</span><br><span style="color: hsl(0, 100%, 40%);">-                            if (lchan->tch.dtx.ul_sid)</span><br><span style="color: hsl(0, 100%, 40%);">-                                   return 0; /* DTXu: pause in progress */</span><br><span style="color: hsl(120, 100%, 40%);">+                               if (lchan->tch.dtx.ul_sid) {</span><br><span style="color: hsl(120, 100%, 40%);">+                                       /* DTXu: pause in progress. Push empty payload to upper layers */</span><br><span style="color: hsl(120, 100%, 40%);">+                                     rc = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+                                       goto compose_l1sap;</span><br><span style="color: hsl(120, 100%, 40%);">+                           }</span><br><span> </span><br><span>                                /* Perform error concealment if possible */</span><br><span>                          rc = osmo_ecu_fr_conceal(&lchan->ecu_state.fr, tch_data);</span><br><span>@@ -1119,6 +1122,7 @@</span><br><span>             osmo_ecu_fr_reset(&lchan->ecu_state.fr, tch_data);</span><br><span> </span><br><span>        /* TCH or BFI */</span><br><span style="color: hsl(120, 100%, 40%);">+compose_l1sap:</span><br><span>     return _sched_compose_tch_ind(l1t, tn, (fn + GSM_HYPERFRAME - 7) % GSM_HYPERFRAME, chan,</span><br><span>             tch_data, rc);</span><br><span> }</span><br><span>@@ -1265,8 +1269,11 @@</span><br><span>                         /* indicate bad frame */</span><br><span>                     switch (tch_mode) {</span><br><span>                  case GSM48_CMODE_SPEECH_V1: /* HR */</span><br><span style="color: hsl(0, 100%, 40%);">-                            if (lchan->tch.dtx.ul_sid)</span><br><span style="color: hsl(0, 100%, 40%);">-                                   return 0; /* DTXu: pause in progress */</span><br><span style="color: hsl(120, 100%, 40%);">+                               if (lchan->tch.dtx.ul_sid) {</span><br><span style="color: hsl(120, 100%, 40%);">+                                       /* DTXu: pause in progress. Push empty payload to upper layers */</span><br><span style="color: hsl(120, 100%, 40%);">+                                     rc = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+                                       goto compose_l1sap;</span><br><span style="color: hsl(120, 100%, 40%);">+                           }</span><br><span>                            tch_data[0] = 0x70; /* F = 0, FT = 111 */</span><br><span>                            memset(tch_data + 1, 0, 14);</span><br><span>                                 rc = 15;</span><br><span>@@ -1291,6 +1298,7 @@</span><br><span>     if (rsl_cmode != RSL_CMOD_SPD_SPEECH)</span><br><span>                return 0;</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+compose_l1sap:</span><br><span>        /* TCH or BFI */</span><br><span>     /* Note on FN 19 or 20: If we received the last burst of a frame,</span><br><span>     * it actually starts at FN 8 or 9. A burst starting there, overlaps</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/10075">change 10075</a>. To unsubscribe, or for help writing mail filters, visit <a href="https://gerrit.osmocom.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://gerrit.osmocom.org/10075"/><meta itemprop="name" content="View Change"/></div></div>

<div style="display:none"> Gerrit-Project: osmo-bts </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>
<div style="display:none"> Gerrit-Change-Id: I0bdfb529f35253ca7e531bb9984a3839c3bfe7e8 </div>
<div style="display:none"> Gerrit-Change-Number: 10075 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Pau Espin Pedrol <pespin@sysmocom.de> </div>