+ * hb_dvdnav_title_scan
+ **********************************************************************/
+static int find_title( hb_list_t * list_title, int title )
+{
+ int ii;
+
+ for ( ii = 0; ii < hb_list_count( list_title ); ii++ )
+ {
+ hb_title_t * hbtitle = hb_list_item( list_title, ii );
+ if ( hbtitle->index == title )
+ return ii;
+ }
+ return -1;
+}
+
+static void skip_some( dvdnav_t * dvdnav, int blocks )
+{
+ int ii;
+ int result, event, len;
+ uint8_t buf[HB_DVD_READ_BUFFER_SIZE];
+
+ for ( ii = 0; ii < blocks; ii++ )
+ {
+ result = dvdnav_get_next_block( dvdnav, buf, &event, &len );
+ if ( result == DVDNAV_STATUS_ERR )
+ {
+ hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(dvdnav));
+ return;
+ }
+ switch ( event )
+ {
+ case DVDNAV_BLOCK_OK:
+ break;
+
+ case DVDNAV_CELL_CHANGE:
+ {
+ } break;
+
+ case DVDNAV_STILL_FRAME:
+ dvdnav_still_skip( dvdnav );
+ break;
+
+ case DVDNAV_WAIT:
+ dvdnav_wait_skip( dvdnav );
+ break;
+
+ case DVDNAV_STOP:
+ return;
+
+ case DVDNAV_HOP_CHANNEL:
+ break;
+
+ case DVDNAV_NAV_PACKET:
+ break;
+
+ case DVDNAV_VTS_CHANGE:
+ {
+ dvdnav_vts_change_event_t *event;
+ event = (dvdnav_vts_change_event_t*)buf;
+ // Some discs initialize the vts with the "first play" item
+ // and some don't seem to. So if we see it is uninitialized,
+ // set it.
+ if ( event->new_vtsN <= 0 )
+ result = dvdnav_title_play( dvdnav, 1 );
+ } break;
+
+ case DVDNAV_HIGHLIGHT:
+ break;
+
+ case DVDNAV_AUDIO_STREAM_CHANGE:
+ break;
+
+ case DVDNAV_SPU_STREAM_CHANGE:
+ break;
+
+ case DVDNAV_SPU_CLUT_CHANGE:
+ break;
+
+ case DVDNAV_NOP:
+ break;
+
+ default:
+ break;
+ }
+ }
+}
+
+static int try_button( dvdnav_t * dvdnav, int menu_id, int button, hb_list_t * list_title )
+{
+ int result, event, len;
+ uint8_t buf[HB_DVD_READ_BUFFER_SIZE];
+ int ii, jj;
+ int32_t cur_title, title, pgcn, pgn;
+ uint64_t longest_duration = 0;
+ int longest = -1;
+
+ pci_t *pci = dvdnav_get_current_nav_pci( dvdnav );
+ result = dvdnav_button_select_and_activate( dvdnav, pci, button + 1 );
+ if (result != DVDNAV_STATUS_OK)
+ {
+ hb_log("dvdnav_button_select_and_activate: %s", dvdnav_err_to_string(dvdnav));
+ }
+
+ result = dvdnav_current_title_program( dvdnav, &title, &pgcn, &pgn );
+ if (result != DVDNAV_STATUS_OK)
+ hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(dvdnav));
+
+ if ( title > 0 )
+ {
+ hb_title_t * hbtitle;
+ int index;
+ index = find_title( list_title, title );
+ hbtitle = hb_list_item( list_title, index );
+ if ( hbtitle != NULL )
+ {
+ if ( hbtitle->duration > longest_duration )
+ {
+ longest_duration = hbtitle->duration;
+ longest = title;
+ }
+ }
+ // If the duration is longer than 10min, assume
+ // this isn't garbage leading to something bigger.
+ if ( longest_duration / 90000 > 10 * 60 )
+ {
+ return longest;
+ }
+ }
+ cur_title = title;
+
+ for (jj = 0; jj < 5; jj++)
+ {
+ for (ii = 0; ii < 2000; ii++)
+ {
+ result = dvdnav_get_next_block( dvdnav, buf, &event, &len );
+ if ( result == DVDNAV_STATUS_ERR )
+ {
+ hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(dvdnav));
+ return 0;
+ }
+ switch ( event )
+ {
+ case DVDNAV_BLOCK_OK:
+ break;
+
+ case DVDNAV_CELL_CHANGE:
+ {
+ result = dvdnav_current_title_program( dvdnav, &title, &pgcn, &pgn );
+ if (result != DVDNAV_STATUS_OK)
+ hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(dvdnav));
+
+ if ( title != cur_title && title > 0 )
+ {
+ hb_title_t * hbtitle;
+ int index;
+ index = find_title( list_title, title );
+ hbtitle = hb_list_item( list_title, index );
+ if ( hbtitle != NULL )
+ {
+ if ( hbtitle->duration > longest_duration )
+ {
+ longest_duration = hbtitle->duration;
+ longest = title;
+ }
+ }
+ // If the duration is longer than 10min, assume
+ // this isn't garbage leading to something bigger.
+ if ( longest_duration / 90000 > 10 * 60 )
+ {
+ return longest;
+ }
+ }
+ cur_title = title;
+ if (title > 0)
+ {
+ result = dvdnav_next_pg_search( dvdnav );
+ if ( result != DVDNAV_STATUS_OK )
+ {
+ return longest;
+ }
+ }
+ } break;
+
+ case DVDNAV_STILL_FRAME:
+ dvdnav_still_skip( dvdnav );
+ break;
+
+ case DVDNAV_WAIT:
+ dvdnav_wait_skip( dvdnav );
+ break;
+
+ case DVDNAV_STOP:
+ return 0;
+
+ case DVDNAV_HOP_CHANNEL:
+ break;
+
+ case DVDNAV_NAV_PACKET:
+ {
+ } break;
+
+ case DVDNAV_VTS_CHANGE:
+ {
+ result = dvdnav_current_title_program( dvdnav, &title, &pgcn, &pgn );
+ if (result != DVDNAV_STATUS_OK)
+ hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(dvdnav));
+
+ if ( title != cur_title && title > 0 )
+ {
+ hb_title_t * hbtitle;
+ int index;
+ index = find_title( list_title, title );
+ hbtitle = hb_list_item( list_title, index );
+ if ( hbtitle != NULL )
+ {
+ if ( hbtitle->duration > longest_duration )
+ {
+ longest_duration = hbtitle->duration;
+ longest = title;
+ }
+ }
+ if ( longest_duration / 90000 > 10 * 60 )
+ {
+ return longest;
+ }
+ }
+ cur_title = title;
+ } break;
+
+ case DVDNAV_HIGHLIGHT:
+ break;
+
+ case DVDNAV_AUDIO_STREAM_CHANGE:
+ break;
+
+ case DVDNAV_SPU_STREAM_CHANGE:
+ break;
+
+ case DVDNAV_SPU_CLUT_CHANGE:
+ break;
+
+ case DVDNAV_NOP:
+ break;
+
+ default:
+ break;
+ }
+ }
+ if (cur_title > 0)
+ {
+ // Some titles have long lead-ins. Try skipping it.
+ dvdnav_next_pg_search( dvdnav );
+ }
+ }
+ return longest;
+}
+
+static int try_menu(
+ hb_dvdnav_t * d,
+ hb_list_t * list_title,
+ DVDMenuID_t menu,
+ uint64_t fallback_duration )
+{
+ int result, event, len;
+ uint8_t buf[HB_DVD_READ_BUFFER_SIZE];
+ int ii, jj;
+ int32_t cur_title, title, pgcn, pgn;
+ uint64_t longest_duration = 0;
+ int longest = -1;
+
+
+ result = dvdnav_menu_call( d->dvdnav, menu );
+ if ( result != DVDNAV_STATUS_OK )
+ {
+ // Sometimes the "first play" item doesn't initialize the
+ // initial VTS. So do it here.
+ result = dvdnav_title_play( d->dvdnav, 1 );
+ result = dvdnav_menu_call( d->dvdnav, menu );
+ if ( result != DVDNAV_STATUS_OK )
+ {
+ hb_error("dvdnav: Can not set dvd menu, %s", dvdnav_err_to_string(d->dvdnav));
+ goto done;
+ }
+ }
+
+ result = dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn );
+ if (result != DVDNAV_STATUS_OK)
+ hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav));
+
+ cur_title = title;
+
+ for (jj = 0; jj < 4; jj++)
+ {
+ for (ii = 0; ii < 4000; ii++)
+ {
+ result = dvdnav_get_next_block( d->dvdnav, buf, &event, &len );
+ if ( result == DVDNAV_STATUS_ERR )
+ {
+ hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav));
+ goto done;
+ }
+ switch ( event )
+ {
+ case DVDNAV_BLOCK_OK:
+ break;
+
+ case DVDNAV_CELL_CHANGE:
+ {
+ result = dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn );
+ if (result != DVDNAV_STATUS_OK)
+ hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav));
+ cur_title = title;
+ } break;
+
+ case DVDNAV_STILL_FRAME:
+ dvdnav_still_skip( d->dvdnav );
+ break;
+
+ case DVDNAV_WAIT:
+ dvdnav_wait_skip( d->dvdnav );
+ break;
+
+ case DVDNAV_STOP:
+ goto done;
+
+ case DVDNAV_HOP_CHANNEL:
+ break;
+
+ case DVDNAV_NAV_PACKET:
+ {
+ pci_t *pci = dvdnav_get_current_nav_pci( d->dvdnav );
+ int kk;
+ int buttons;
+ if ( pci == NULL ) break;
+
+ buttons = pci->hli.hl_gi.btn_ns;
+ if ( cur_title == 0 && buttons > 1 )
+ {
+ int menu_title, menu_id;
+ result = dvdnav_current_title_info( d->dvdnav, &menu_title, &menu_id );
+ if (result != DVDNAV_STATUS_OK)
+ hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav));
+ for (kk = 0; kk < buttons; kk++)
+ {
+ dvdnav_t *dvdnav_copy;
+
+ result = dvdnav_dup( &dvdnav_copy, d->dvdnav );
+ if (result != DVDNAV_STATUS_OK)
+ {
+ hb_log("dvdnav dup failed: %s", dvdnav_err_to_string(d->dvdnav));
+ goto done;
+ }
+ title = try_button( dvdnav_copy, menu_id, kk, list_title );
+ dvdnav_free_dup( dvdnav_copy );
+
+ if ( title >= 0 )
+ {
+ hb_title_t * hbtitle;
+ int index;
+ index = find_title( list_title, title );
+ hbtitle = hb_list_item( list_title, index );
+ if ( hbtitle != NULL )
+ {
+ if ( hbtitle->duration > longest_duration )
+ {
+ longest_duration = hbtitle->duration;
+ longest = title;
+ if ((float)fallback_duration * 0.75 < longest_duration)
+ goto done;
+ }
+ }
+ }
+ }
+ goto done;
+ }
+ if ( cur_title == 0 && buttons == 1 )
+ {
+ dvdnav_button_select_and_activate( d->dvdnav, pci, 1 );
+ }
+ } break;
+
+ case DVDNAV_VTS_CHANGE:
+ {
+ result = dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn );
+ if (result != DVDNAV_STATUS_OK)
+ hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav));
+ cur_title = title;
+ } break;
+
+ case DVDNAV_HIGHLIGHT:
+ break;
+
+ case DVDNAV_AUDIO_STREAM_CHANGE:
+ break;
+
+ case DVDNAV_SPU_STREAM_CHANGE:
+ break;
+
+ case DVDNAV_SPU_CLUT_CHANGE:
+ break;
+
+ case DVDNAV_NOP:
+ break;
+
+ default:
+ break;
+ }
+ }
+ // Sometimes the menu is preceeded by a intro that just
+ // gets restarted when hitting the menu button. So
+ // try skipping with the skip forward button. Then
+ // try hitting the menu again.
+ if ( !(jj & 1) )
+ dvdnav_next_pg_search( d->dvdnav );
+ else
+ result = dvdnav_menu_call( d->dvdnav, menu );
+ }
+
+done:
+ return longest;
+}
+
+static int hb_dvdnav_main_feature( hb_dvd_t * e, hb_list_t * list_title )
+{
+ hb_dvdnav_t * d = &(e->dvdnav);
+ int longest_root;
+ int longest_title;
+ int longest_fallback;
+ int ii;
+ uint64_t longest_duration_root = 0;
+ uint64_t longest_duration_title = 0;
+ uint64_t longest_duration_fallback = 0;
+
+ for ( ii = 0; ii < hb_list_count( list_title ); ii++ )
+ {
+ hb_title_t * title = hb_list_item( list_title, ii );
+ if ( title->duration > longest_duration_fallback )
+ {
+ longest_duration_fallback = title->duration;
+ longest_fallback = title->index;
+ }
+ }
+
+ dvdnav_reset( d->dvdnav );
+ skip_some( d->dvdnav, 500 );
+
+ longest_root = try_menu( d, list_title, DVD_MENU_Root, longest_duration_fallback );
+ if ( longest_root >= 0 )
+ {
+ hb_title_t * hbtitle;
+ int index;
+ index = find_title( list_title, longest_root );
+ hbtitle = hb_list_item( list_title, index );
+ if ( hbtitle )
+ longest_duration_root = hbtitle->duration;
+ }
+ if ( longest_root < 0 ||
+ (float)longest_duration_fallback * 0.7 > longest_duration_root)
+ {
+ longest_title = try_menu( d, list_title, DVD_MENU_Title, longest_duration_fallback );
+ if ( longest_title >= 0 )
+ {
+ hb_title_t * hbtitle;
+ int index;
+ index = find_title( list_title, longest_title );
+ hbtitle = hb_list_item( list_title, index );
+ if ( hbtitle )
+ longest_duration_title = hbtitle->duration;
+ }
+ }
+
+ uint64_t longest_duration;
+ int longest;
+
+ if ( longest_duration_root > longest_duration_title )
+ {
+ longest_duration = longest_duration_root;
+ longest = longest_root;
+ }
+ else
+ {
+ longest_duration = longest_duration_title;
+ longest = longest_title;
+ }
+ if ((float)longest_duration_fallback * 0.7 > longest_duration)
+ {
+ longest = longest_fallback;
+ }
+ return longest;
+}
+
+/***********************************************************************