Fix region width/height encoding bug. Dvbsub never tested for a change in...

Fix region width/height encoding bug. Dvbsub never tested for a change in region widht/height that made a region smaller then the previous one that was encoded. The encoded region size would always been the largest size encountered, this is now fixed. Removed some superflous whitespace/

modules/codec/dvbsub.c

@@ -685,7 +685,6 @@ static void decode_page_composition( decoder_t *p_dec, bs_t *s )
     int i_version, i_state, i_segment_length, i_timeout, i;
 
     /* A page is composed by 0 or more region */
-
     i_segment_length = bs_read( s, 16 );
     i_timeout = bs_read( s, 8 );
     i_version = bs_read( s, 4 );
@@ -814,6 +813,9 @@ static void decode_region_composition( decoder_t *p_dec, bs_t *s )
 
     i_width = bs_read( s, 16 );
     i_height = bs_read( s, 16 );
+#ifdef DEBUG_DVBSUB
+    msg_Dbg( p_dec, " width=%d height=%d", i_width, i_height );
+#endif
     i_level_comp = bs_read( s, 3 );
     i_depth = bs_read( s, 3 );
     bs_skip( s, 2 ); /* Reserved */
@@ -841,7 +843,7 @@ static void decode_region_composition( decoder_t *p_dec, bs_t *s )
     {
         if( p_region->p_pixbuf )
         {
-            msg_Dbg( p_dec, "region size changed (not allowed)" );
+            msg_Dbg( p_dec, " changed (not allowed)" );
             free( p_region->p_pixbuf );
         }
 
@@ -1904,8 +1906,10 @@ static void encode_page_composition( encoder_t *p_enc, bs_t *s,
             p_sys->p_regions[p_sys->i_regions++] = region;
         }
 
-        if( p_sys->p_regions[i_regions].i_width <
-            (int)p_region->fmt.i_visible_width )
+        if( ( p_sys->p_regions[i_regions].i_width <
+              (int)p_region->fmt.i_visible_width ) || 
+            ( p_sys->p_regions[i_regions].i_width >
+              (int)p_region->fmt.i_visible_width ) )
         {
             b_mode_change = VLC_TRUE;
             msg_Dbg( p_enc, "region %i width change: %i -> %i",
@@ -1914,8 +1918,10 @@ static void encode_page_composition( encoder_t *p_enc, bs_t *s,
             p_sys->p_regions[i_regions].i_width =
                 p_region->fmt.i_visible_width;
         }
-        if( p_sys->p_regions[i_regions].i_height <
-            (int)p_region->fmt.i_visible_height )
+        if( ( p_sys->p_regions[i_regions].i_height <
+             (int)p_region->fmt.i_visible_height ) ||
+            ( p_sys->p_regions[i_regions].i_height >
+              (int)p_region->fmt.i_visible_height ) )
         {
             b_mode_change = VLC_TRUE;
             msg_Dbg( p_enc, "region %i height change: %i -> %i",