smf: simplify usage of VLC_TS_0

modules/demux/smf.c

@@ -342,7 +342,7 @@ int HandleMessage (demux_t *p_demux, mtrk_t *tr)
     }
 
 send:
-    block->i_dts = block->i_pts = VLC_TS_0 + date_Get (&p_demux->p_sys->pts);
+    block->i_dts = block->i_pts = date_Get (&p_demux->p_sys->pts);
     es_out_Send (p_demux->out, p_demux->p_sys->es, block);
 
 skip:
@@ -368,8 +368,7 @@ static int Demux (demux_t *p_demux)
     if (pulse == UINT64_MAX)
         return 0; /* all tracks are done */
 
-    es_out_Control (p_demux->out, ES_OUT_SET_PCR,
-                    VLC_TS_0 + date_Get (&p_sys->pts));
+    es_out_Control (p_demux->out, ES_OUT_SET_PCR, date_Get (&p_sys->pts));
 
     for (unsigned i = 0; i < p_sys->trackc; i++)
     {
@@ -543,7 +542,7 @@ static int Open (vlc_object_t *obj)
 
     /* Default SMF tempo is 120BPM, i.e. half a second per quarter note */
     date_Init (&sys->pts, ppqn * 2, 1);
-    date_Set (&sys->pts, 0);
+    date_Set (&sys->pts, VLC_TS_0);
     sys->pulse = 0;
     sys->ppqn = ppqn;