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jbrjake's loose pixel ratio patch.
[handbrake-jp/handbrake-jp-git.git] / libhb / dvd.c
index 9b4ba3f..8eab1b3 100644 (file)
@@ -30,6 +30,7 @@ struct hb_dvd_s
     int            title_block_count;
     int            cell_cur;
     int            cell_next;
+    int            cell_overlap;
     int            block;
     int            pack_len;
     int            next_vobu;
@@ -78,14 +79,14 @@ hb_dvd_t * hb_dvd_init( char * path )
     /* Open device */
     if( !( d->reader = DVDOpen( path ) ) )
     {
-        hb_log( "dvd: DVDOpen failed (%s)", path );
+        hb_error( "dvd: DVDOpen failed (%s)", path );
         goto fail;
     }
 
     /* Open main IFO */
     if( !( d->vmg = ifoOpen( d->reader, 0 ) ) )
     {
-        hb_log( "dvd: ifoOpen failed" );
+        hb_error( "dvd: ifoOpen failed" );
         goto fail;
     }
 
@@ -146,7 +147,7 @@ hb_title_t * hb_dvd_title_scan( hb_dvd_t * d, int t )
     hb_log( "scan: opening IFO for VTS %d", title->vts );
     if( !( vts = ifoOpen( d->reader, title->vts ) ) )
     {
-        hb_log( "scan: ifoOpen failed" );
+        hb_error( "scan: ifoOpen failed" );
         goto fail;
     }
 
@@ -158,6 +159,14 @@ hb_title_t * hb_dvd_title_scan( hb_dvd_t * d, int t )
     pgn    = vts->vts_ptt_srpt->title[title->ttn-1].ptt[0].pgn;
     d->pgc = vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 
+    hb_log("pgc_id: %d, pgn: %d: pgc: 0x%x", pgc_id, pgn, d->pgc);
+
+    if( !d->pgc )
+    {
+        hb_error( "scan: pgc not valid, skipping" );
+        goto fail;
+    }
     /* Start cell */
     title->cell_start  = d->pgc->program_map[pgn-1] - 1;
     title->block_start = d->pgc->cell_playback[title->cell_start].first_sector;
@@ -251,6 +260,11 @@ hb_title_t * hb_dvd_title_scan( hb_dvd_t * d, int t )
                 audio->codec = HB_ACODEC_LPCM;
                 break;
 
+            case 0x06:
+                audio->id    = ( ( 0x88 + position ) << 8 ) | 0xbd;
+                audio->codec = HB_ACODEC_DCA;
+                break;
+
             default:
                 audio->id    = 0;
                 audio->codec = 0;
@@ -286,7 +300,8 @@ hb_title_t * hb_dvd_title_scan( hb_dvd_t * d, int t )
         snprintf( audio->lang, sizeof( audio->lang ), "%s (%s)",
             strlen(lang->native_name) ? lang->native_name : lang->eng_name,
             audio->codec == HB_ACODEC_AC3 ? "AC3" : ( audio->codec ==
-                HB_ACODEC_MPGA ? "MPEG" : "LPCM" ) );
+                HB_ACODEC_DCA ? "DTS" : ( audio->codec ==
+                HB_ACODEC_MPGA ? "MPEG" : "LPCM" ) ) );
         snprintf( audio->lang_simple, sizeof( audio->lang_simple ), "%s",
                   strlen(lang->native_name) ? lang->native_name : lang->eng_name );
         snprintf( audio->iso639_2, sizeof( audio->iso639_2 ), "%s",
@@ -516,13 +531,13 @@ int hb_dvd_start( hb_dvd_t * d, int title, int chapter )
     d->ttn = d->vmg->tt_srpt->title[title-1].vts_ttn;
     if( !( d->ifo = ifoOpen( d->reader, d->vts ) ) )
     {
-        hb_log( "dvd: ifoOpen failed for VTS %d", d->vts );
+        hb_error( "dvd: ifoOpen failed for VTS %d", d->vts );
         return 0;
     }
     if( !( d->file = DVDOpenFile( d->reader, d->vts,
                                   DVD_READ_TITLE_VOBS ) ) )
     {
-        hb_log( "dvd: DVDOpenFile failed for VTS %d", d->vts );
+        hb_error( "dvd: DVDOpenFile failed for VTS %d", d->vts );
         return 0;
     }
 
@@ -555,7 +570,8 @@ int hb_dvd_start( hb_dvd_t * d, int title, int chapter )
     d->block     = d->pgc->cell_playback[d->cell_cur].first_sector;
     d->next_vobu = d->block;
     d->pack_len  = 0;
-
+    d->cell_overlap = 0;
+    
     return 1;
 }
 
@@ -646,11 +662,25 @@ int hb_dvd_read( hb_dvd_t * d, hb_buffer_t * b )
         
         for( ;; )
         {
-            int block, pack_len, next_vobu;
+            int block, pack_len, next_vobu, read_retry;
+
+            for( read_retry = 0; read_retry < 3; read_retry++ )
+            {
+                if( DVDReadBlocks( d->file, d->next_vobu, 1, b->data ) == 1 )
+                {
+                    /*
+                     * Successful read.
+                     */
+                    break;
+                } else {
+                    hb_log( "dvd: Read Error on blk %d, attempt %d",
+                            d->next_vobu, read_retry );
+                }
+            }
 
-            if( DVDReadBlocks( d->file, d->next_vobu, 1, b->data ) != 1 )
+            if( read_retry == 3 )
             {
-                hb_log( "dvd: DVDReadBlocks failed (%d)", d->next_vobu );
+                hb_log( "dvd: Unrecoverable Read Error from DVD, potential HD or DVD Failure (blk: %d)", d->next_vobu );
                 return 0;
             }
 
@@ -706,16 +736,31 @@ int hb_dvd_read( hb_dvd_t * d, hb_buffer_t * b )
 
         if( dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
         {
+            hb_log( "DVD: End of Cell (%d) at block %d", d->cell_cur, 
+                    d->block );
             d->cell_cur  = d->cell_next;
             d->next_vobu = d->pgc->cell_playback[d->cell_cur].first_sector;
             FindNextCell( d );
+            d->cell_overlap = 1;
+        }
+        
+        // Revert the cell overlap, and check for a chapter break
+        if( dsi_pack.vobu_sri.prev_vobu == SRI_END_OF_CELL )
+        {
+            hb_log( "DVD: Beginning of Cell (%d) at block %d", d->cell_cur, 
+                   d->block );
+            if( d->cell_overlap )
+            {
+                b->new_chap = hb_dvd_is_break( d );
+                d->cell_overlap = 0;
+            }
         }
     }
     else
     {
         if( DVDReadBlocks( d->file, d->block, 1, b->data ) != 1 )
         {
-            hb_log( "reader: DVDReadBlocks failed (%d)", d->block );
+            hb_error( "reader: DVDReadBlocks failed (%d)", d->block );
             return 0;
         }
         d->pack_len--;
@@ -736,19 +781,20 @@ int hb_dvd_chapter( hb_dvd_t * d )
 {
     int     i;
     int     pgc_id, pgn;
+       int     nr_of_ptts = d->ifo->vts_ptt_srpt->title[d->ttn-1].nr_of_ptts;
     pgc_t * pgc;
 
-    for( i = 0;
-         i < d->ifo->vts_ptt_srpt->title[d->ttn-1].nr_of_ptts;
-         i++ )
+    for( i = nr_of_ptts - 1;
+         i >= 0;
+         i-- )
     {
         /* Get pgc for chapter (i+1) */
         pgc_id = d->ifo->vts_ptt_srpt->title[d->ttn-1].ptt[i].pgcn;
         pgn    = d->ifo->vts_ptt_srpt->title[d->ttn-1].ptt[i].pgn;
         pgc    = d->ifo->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 
-        if( d->cell_cur >= pgc->program_map[pgn-1] - 1 &&
-            d->cell_cur <= pgc->nr_of_cells - 1 )
+        if( d->cell_cur - d->cell_overlap >= pgc->program_map[pgn-1] - 1 &&
+            d->cell_cur - d->cell_overlap <= pgc->nr_of_cells - 1 )
         {
             /* We are in this chapter */
             return i + 1;
@@ -760,6 +806,70 @@ int hb_dvd_chapter( hb_dvd_t * d )
 }
 
 /***********************************************************************
+ * hb_dvd_is_break
+ ***********************************************************************
+ * Returns 1 if the current block is a new chapter start
+ **********************************************************************/
+int hb_dvd_is_break( hb_dvd_t * d )
+{
+    int     i, j;
+    int     pgc_id, pgn;
+       int     nr_of_ptts = d->ifo->vts_ptt_srpt->title[d->ttn-1].nr_of_ptts;
+    pgc_t * pgc;
+    int     cell, chapter_length, cell_end;
+    
+    for( i = nr_of_ptts - 1;
+         i > 0;
+         i-- )
+    {
+        /* Get pgc for chapter (i+1) */
+        pgc_id = d->ifo->vts_ptt_srpt->title[d->ttn-1].ptt[i].pgcn;
+        pgn    = d->ifo->vts_ptt_srpt->title[d->ttn-1].ptt[i].pgn;
+        pgc    = d->ifo->vts_pgcit->pgci_srp[pgc_id-1].pgc;
+        cell   = pgc->program_map[pgn-1] - 1;
+
+        if( cell <= d->cell_start )
+            break;
+
+        // This must not match against the start cell.
+        if( pgc->cell_playback[cell].first_sector == d->block && cell != d->cell_start )
+        {
+            /* Check to see if we merged this chapter into the previous one... */
+            /* As a note, merging chapters is probably bad practice for this very reason */
+            chapter_length = 0;
+            
+            if( i == nr_of_ptts - 1 )
+            {
+                cell_end = d->pgc->nr_of_cells;
+            }
+            else
+            {
+                cell_end = pgc->program_map[pgn] - 1;
+            }
+            
+            for( j = cell; j < cell_end; j++ )
+            {
+                chapter_length += pgc->cell_playback[j].last_sector + 1 - 
+                                  pgc->cell_playback[j].first_sector;
+            }
+            
+            if( chapter_length >= 2048 )
+            {
+                hb_log("DVD: Chapter Break Cell Found");
+                /* We have a chapter break */
+                return 1;
+            }
+            else
+            {
+                hb_log("DVD: Cell Found (%d)", chapter_length);
+            }
+        }
+    }
+    
+    return 0;
+}
+
+/***********************************************************************
  * hb_dvd_close
  ***********************************************************************
  * Closes and frees everything