packetizer_mpeg4video: use VLC_TS_INVALID (refs #3135)

modules/packetizer/mpeg4video.c

@@ -219,7 +219,8 @@ static void PacketizeReset( void *p_private, bool b_broken )
 
     p_sys->i_interpolated_pts =
     p_sys->i_interpolated_dts =
-    p_sys->i_last_ref_pts =
+    p_sys->i_last_ref_pts = VLC_TS_INVALID;
+
     p_sys->i_last_time_ref =
     p_sys->i_time_ref =
     p_sys->i_last_time =
@@ -247,8 +248,8 @@ static int PacketizeValidate( void *p_private, block_t *p_au )
 
     /* We've just started the stream, wait for the first PTS.
      * We discard here so we can still get the sequence header. */
-    if( p_sys->i_interpolated_pts <= 0 &&
-        p_sys->i_interpolated_dts <= 0 )
+    if( p_sys->i_interpolated_pts <= VLC_TS_INVALID &&
+        p_sys->i_interpolated_dts <= VLC_TS_INVALID )
     {
         msg_Dbg( p_dec, "need a starting pts/dts" );
         return VLC_EGENERIC;
@@ -501,9 +502,9 @@ static int ParseVOP( decoder_t *p_dec, block_t *p_vop )
     p_sys->i_last_timeincr = i_time_increment;
 
     /* Correct interpolated dts when we receive a new pts/dts */
-    if( p_vop->i_pts > 0 )
+    if( p_vop->i_pts > VLC_TS_INVALID )
         p_sys->i_interpolated_pts = p_vop->i_pts;
-    if( p_vop->i_dts > 0 )
+    if( p_vop->i_dts > VLC_TS_INVALID )
         p_sys->i_interpolated_dts = p_vop->i_dts;
 
     if( (p_sys->i_flags & BLOCK_FLAG_TYPE_B) || !p_sys->b_frame )
@@ -512,16 +513,16 @@ static int ParseVOP( decoder_t *p_dec, block_t *p_vop )
 
         p_sys->i_interpolated_dts = p_sys->i_interpolated_pts;
 
-        if( p_vop->i_pts > 0 )
+        if( p_vop->i_pts > VLC_TS_INVALID )
             p_sys->i_interpolated_dts = p_vop->i_pts;
-        if( p_vop->i_dts > 0 )
+        if( p_vop->i_dts > VLC_TS_INVALID )
             p_sys->i_interpolated_dts = p_vop->i_dts;
 
         p_sys->i_interpolated_pts = p_sys->i_interpolated_dts;
     }
     else
     {
-        if( p_sys->i_last_ref_pts > 0 )
+        if( p_sys->i_last_ref_pts > VLC_TS_INVALID )
             p_sys->i_interpolated_dts = p_sys->i_last_ref_pts;
 
         p_sys->i_last_ref_pts = p_sys->i_interpolated_pts;