mux ts: small fixes and optimizations

Fixes:
- compiler warnings on unused variables
- comparing correct types
- optimized calculations

modules/mux/mpeg/ts.c

@@ -510,6 +510,7 @@ static int Open( vlc_object_t *p_this )
     p_sys->i_pmtslots = p_sys->b_sdt = 0;
     p_sys->i_num_pmt = 1;
     p_sys->dvbpmt = NULL;
+
     memset( &p_sys->pmtmap, 0, sizeof(p_sys->pmtmap) );
 
     vlc_mutex_init( &p_sys->csa_lock );
@@ -1511,12 +1512,12 @@ static int Mux( sout_mux_t *p_mux )
                         p_data->i_length = 1000;
 
                     if( ( p_pcr_stream->i_pes_dts > 0 &&
-                          p_data->i_dts - 10000000 > p_pcr_stream->i_pes_dts +
+                          p_data->i_dts - (mtime_t)10000000 > p_pcr_stream->i_pes_dts +
                           p_pcr_stream->i_pes_length ) ||
                         p_data->i_dts < p_stream->i_pes_dts ||
                         ( p_stream->i_pes_dts > 0 &&
                           p_input->p_fmt->i_cat != SPU_ES &&
-                          p_data->i_dts - 10000000 > p_stream->i_pes_dts +
+                          p_data->i_dts - (mtime_t)10000000 > p_stream->i_pes_dts +
                           p_stream->i_pes_length ) )
                     {
                         msg_Warn( p_mux, "packet with too strange dts "
@@ -1769,6 +1770,8 @@ static block_t *FixPES( sout_mux_t *p_mux, block_fifo_t *p_fifo )
     block_t *p_data;
     size_t i_size;
 
+    VLC_UNUSED(p_mux);
+
     p_data = block_FifoShow( p_fifo );
     i_size = p_data->i_buffer;
 
@@ -1945,7 +1948,7 @@ static void TSDate( sout_mux_t *p_mux, sout_buffer_chain_t *p_chain_ts,
     int i_packet_count = p_chain_ts->i_depth;
     int i;
 
-    if ( i_pcr_length / 1000 > 0 )
+    if ( i_pcr_length >= 1000 ) /* i_pcr_length / 1000 > 0 */
     {
         int i_bitrate = ((uint64_t)i_packet_count * 188 * 8000)
                           / (uint64_t)(i_pcr_length / 1000);
@@ -1953,7 +1956,7 @@ static void TSDate( sout_mux_t *p_mux, sout_buffer_chain_t *p_chain_ts,
         {
             msg_Warn( p_mux, "max bitrate exceeded at %"PRId64
                       " (%d bi/s for %d pkt in %"PRId64" us)",
-                      i_pcr_dts + p_sys->i_shaping_delay * 3 / 2 - mdate(),
+                      i_pcr_dts + ((p_sys->i_shaping_delay * 3) >> 1) - mdate(),
                       i_bitrate, i_packet_count, i_pcr_length);
         }
 #if 0
@@ -1995,7 +1998,7 @@ static void TSDate( sout_mux_t *p_mux, sout_buffer_chain_t *p_chain_ts,
         }
 
         /* latency */
-        p_ts->i_dts += p_sys->i_shaping_delay * 3 / 2;
+        p_ts->i_dts += (p_sys->i_shaping_delay * 3) >> 1;
 
         sout_AccessOutWrite( p_mux->p_access, p_ts );
     }
@@ -2013,6 +2016,8 @@ static block_t *TSNew( sout_mux_t *p_mux, ts_stream_t *p_stream,
     int i_payload_max = 184 - ( b_pcr ? 8 : 0 );
     int i_payload;
 
+    VLC_UNUSED(p_mux);
+
     if( p_stream->i_pes_used <= 0 )
     {
         b_new_pes = true;
@@ -2227,6 +2232,8 @@ static void PEStoTS( sout_instance_t *p_sout,
     int     i_size;
     int     b_new_pes;
 
+    VLC_UNUSED(p_sout);
+
     /* get PES total size */
     i_size = p_pes->i_buffer;
     p_data = p_pes->p_buffer;
@@ -2315,6 +2322,7 @@ static block_t *WritePSISection( sout_instance_t *p_sout,
                                        dvbpsi_psi_section_t* p_section )
 {
     block_t   *p_psi, *p_first = NULL;
+    VLC_UNUSED(p_sout);
 
     while( p_section )
     {