* Accurate GET_TIME for dvdread

modules/access/dvdread.c

@@ -139,11 +139,14 @@ struct demux_sys_t
     int i_title_end_block;
     int i_title_blocks;
     int i_title_offset;
+    mtime_t i_title_cur_time;
 
     int i_title_start_cell;
     int i_title_end_cell;
     int i_cur_cell;
     int i_next_cell;
+    mtime_t i_cell_cur_time;
+    mtime_t i_cell_duration;
 
     /* Track */
     ps_track_t    tk[PS_TK_COUNT];
@@ -250,6 +253,9 @@ static int Open( vlc_object_t *p_this )
     ps_track_init( p_sys->tk );
     p_sys->i_aspect = -1;
     p_sys->i_mux_rate = 0;
+    p_sys->i_title_cur_time = (mtime_t) 0;
+    p_sys->i_cell_cur_time = (mtime_t) 0;
+    p_sys->i_cell_duration = (mtime_t) 0;
 
     p_sys->p_dvdread = p_dvdread;
     p_sys->p_vmg_file = p_vmg_file;
@@ -380,10 +386,9 @@ static int Control( demux_t *p_demux, int i_query, va_list args )
         }
         case DEMUX_GET_TIME:
             pi64 = (int64_t*)va_arg( args, int64_t * );
-            if( p_sys->i_mux_rate > 0 )
+            if( p_sys->i_title_cur_time > 0 )
             {
-                *pi64 = (int64_t)1000000 * DVD_VIDEO_LB_LEN *
-                        p_sys->i_title_offset / 50 / p_sys->i_mux_rate;
+                *pi64 = (int64_t)p_sys->i_title_cur_time;
                 return VLC_SUCCESS;
             }
             *pi64 = 0;
@@ -394,7 +399,6 @@ static int Control( demux_t *p_demux, int i_query, va_list args )
             if (p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles)
             {
                 *pi64 = dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 );
-                p_sys->i_mux_rate = p_sys->i_title_blocks * DVD_VIDEO_LB_LEN / (*pi64 / 20000);
                 return VLC_SUCCESS;
             }
             *pi64 = 0;
@@ -1127,6 +1131,12 @@ static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
 
+    /*
+     * Store the timecodes so we can get the current time
+     */
+    p_sys->i_title_cur_time = (mtime_t) p_sys->dsi_pack.dsi_gi.nv_pck_scr / 90 * 1000;
+    p_sys->i_cell_cur_time = (mtime_t) dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 );
+
     /*
      * If we're not at the end of this cell, we can determine the next
      * VOBU to display using the VOBU_SRI information section of the
@@ -1192,23 +1202,30 @@ static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
 
         p_sys->i_next_vobu =
             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
+
+        p_sys->i_cell_duration = (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 );
     }
 
+
 #if 0
-    msg_Dbg( p_demux, 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
+    msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
              p_sys->dsi_pack.dsi_gi.vobu_ea,
              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
-             p_sys->dsi_pack.dsi_gi.vobu_c_idn );
+             p_sys->dsi_pack.dsi_gi.vobu_c_idn,
+             dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 ) );
+
+    msg_Dbg( p_demux, "cell duration: %lld", 
+             (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 ) );
 
-    msg_Dbg( p_demux, 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
+    msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
              p_sys->dsi_pack.sml_pbi.category,
              p_sys->dsi_pack.sml_pbi.ilvu_ea,
              p_sys->dsi_pack.sml_pbi.ilvu_sa,
              p_sys->dsi_pack.sml_pbi.size );
 
-    msg_Dbg( p_demux, 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
+    msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);