demux: ts: handle PCR less pid (fix #13339)

Because the no-trust-pcr thing isn't a real fix.

modules/demux/ts.c

@@ -2363,11 +2363,29 @@ static void PCRHandle( demux_t *p_demux, ts_pid_t *pid, block_t *p_bk )
 
         for( int i_prg = 0; i_prg < p_sys->pmt[i]->psi->i_prg; i_prg++ )
         {
-            if( pid->i_pid == p_sys->pmt[i]->psi->prg[i_prg]->i_pid_pcr )
+            ts_prg_psi_t *p_prg = p_sys->pmt[i]->psi->prg[i_prg];
+
+            if( p_prg->i_pid_pcr == 0x1FFF ) /* That program has no dedicated PCR pid ISO/IEC 13818-1 2.4.4.9 */
+            {
+                if( pid->p_owner ) /* PCR shall be on pid itself */
+                {
+                    p_prg->i_pcr_value = i_pcr; /* ? update PCR for the whole group program */
+                    i_group = p_prg->i_number;
+                    b_pmt_has_es = pid->es;
+                }
+                else
                 {
-                /* We've found our target group */
-                p_sys->pmt[i]->psi->prg[i_prg]->i_pcr_value = i_pcr;
-                i_group = p_sys->pmt[i]->psi->prg[i_prg]->i_number;
+                    msg_Warn(p_demux, "discarding PCR update from pid %d which has no owner", pid->i_pid);
+                }
+                break;
+            }
+            else /* set PCR provided by current pid to program(s) referencing it */
+            {
+                /* Can be dedicated PCR pid (no owned then) or another pid (owner == pmt) */
+                if( p_prg->i_pid_pcr == pid->i_pid ) /* If that program references current pid as PCR */
+                {
+                    p_prg->i_pcr_value = i_pcr;
+                    i_group = p_prg->i_number; /* We've found a target group for update */
                     for( int j = 0; j < 8192; j++ )
                     {
                         const ts_pid_t *pid = &p_sys->pid[j];
@@ -2379,6 +2397,7 @@ static void PCRHandle( demux_t *p_demux, ts_pid_t *pid, block_t *p_bk )
                     }
                 }
             }
+        }
 
         if ( p_sys->b_trust_pcr && i_group > 0 && b_pmt_has_es )
             es_out_Control( p_demux->out, ES_OUT_SET_GROUP_PCR,