static char * hb_dvdnav_name( char * path );
static hb_dvd_t * hb_dvdnav_init( char * path );
static int hb_dvdnav_title_count( hb_dvd_t * d );
-static hb_title_t * hb_dvdnav_title_scan( hb_dvd_t * d, int t );
+static hb_title_t * hb_dvdnav_title_scan( hb_dvd_t * d, int t, uint64_t min_duration );
static int hb_dvdnav_start( hb_dvd_t * d, hb_title_t *title, int chapter );
static void hb_dvdnav_stop( hb_dvd_t * d );
static int hb_dvdnav_seek( hb_dvd_t * d, float f );
static int hb_dvdnav_chapter( hb_dvd_t * d );
static void hb_dvdnav_close( hb_dvd_t ** _d );
static int hb_dvdnav_angle_count( hb_dvd_t * d );
-static void hb_dvdnav_set_angle( hb_dvd_t * e, int angle );
+static void hb_dvdnav_set_angle( hb_dvd_t * d, int angle );
+static int hb_dvdnav_main_feature( hb_dvd_t * d, hb_list_t * list_title );
hb_dvd_func_t hb_dvdnav_func =
{
hb_dvdnav_read,
hb_dvdnav_chapter,
hb_dvdnav_angle_count,
- hb_dvdnav_set_angle
+ hb_dvdnav_set_angle,
+ hb_dvdnav_main_feature
};
// there can be at most 999 PGCs per title. round that up to the nearest
{
hb_dvd_t * e;
hb_dvdnav_t * d;
+ int region_mask;
e = calloc( sizeof( hb_dvd_t ), 1 );
d = &(e->dvdnav);
+ /* Log DVD drive region code */
+ if ( hb_dvd_region( path, ®ion_mask ) == 0 )
+ {
+ hb_log( "dvd: Region mask 0x%02x", region_mask );
+ if ( region_mask == 0xFF )
+ {
+ hb_log( "dvd: Warning, DVD device has no region set" );
+ }
+ }
+
/* Open device */
if( dvdnav_open(&d->dvdnav, path) != DVDNAV_STATUS_OK )
{
/***********************************************************************
* hb_dvdnav_title_scan
**********************************************************************/
-static hb_title_t * hb_dvdnav_title_scan( hb_dvd_t * e, int t )
+static hb_title_t * hb_dvdnav_title_scan( hb_dvd_t * e, int t, uint64_t min_duration )
{
hb_dvdnav_t * d = &(e->dvdnav);
hb_log( "scan: scanning title %d", t );
title = hb_title_init( d->path, t );
+ title->type = HB_DVD_TYPE;
if (dvdnav_get_title_string(d->dvdnav, &name) == DVDNAV_STATUS_OK)
{
strncpy( title->name, name, sizeof( title->name ) );
/* ignore titles under 10 seconds because they're often stills or
* clips with no audio & our preview code doesn't currently handle
* either of these. */
- if( longest < 900000LL )
+ if( longest < min_duration )
{
hb_log( "scan: ignoring title (too short)" );
goto fail;
pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc;
- hb_log("pgc_id: %d, pgn: %d: pgc: 0x%x", pgcn, pgn, pgc);
+ hb_log("pgc_id: %d, pgn: %d: pgc: %p", pgcn, pgn, pgc);
if (pgn > pgc->nr_of_programs)
{
hb_error( "invalid PGN %d for title %d, skipping", pgn, t );
title->cell_end = pgc->nr_of_cells - 1;
title->block_end = pgc->cell_playback[title->cell_end].last_sector;
- hb_log( "scan: vts=%d, ttn=%d, cells=%d->%d, blocks=%d->%d, "
- "%d blocks", title->vts, title->ttn, title->cell_start,
+ hb_log( "scan: vts=%d, ttn=%d, cells=%d->%d, blocks=%"PRIu64"->%"PRIu64", "
+ "%"PRIu64" blocks", title->vts, title->ttn, title->cell_start,
title->cell_end, title->block_start, title->block_end,
title->block_count );
title->hours = title->duration / 90000 / 3600;
title->minutes = ( ( title->duration / 90000 ) % 3600 ) / 60;
title->seconds = ( title->duration / 90000 ) % 60;
- hb_log( "scan: duration is %02d:%02d:%02d (%lld ms)",
+ hb_log( "scan: duration is %02d:%02d:%02d (%"PRId64" ms)",
title->hours, title->minutes, title->seconds,
title->duration / 90 );
hb_list_add( title->list_audio, audio );
}
- if( !hb_list_count( title->list_audio ) )
- {
- hb_log( "scan: ignoring title (no audio track)" );
- goto fail;
- }
-
- memcpy( title->palette,
- ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->palette,
- 16 * sizeof( uint32_t ) );
-
/* Check for subtitles */
for( i = 0; i < ifo->vtsi_mat->nr_of_vts_subp_streams; i++ )
{
subtitle->config.dest = RENDERSUB; // By default render (burn-in) the VOBSUB.
subtitle->type = lang_extension;
+
+ memcpy( subtitle->palette,
+ ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->palette,
+ 16 * sizeof( uint32_t ) );
switch( lang_extension )
{
chapter->minutes = ( seconds % 3600 ) / 60;
chapter->seconds = seconds % 60;
- hb_log( "scan: chap %d c=%d->%d, b=%d->%d (%d), %lld ms",
+ hb_log( "scan: chap %d c=%d->%d, b=%"PRIu64"->%"PRIu64" (%"PRIu64"), %"PRId64" ms",
chapter->index, chapter->cell_start, chapter->cell_end,
chapter->block_start, chapter->block_end,
chapter->block_count, chapter->duration / 90 );
}
/***********************************************************************
+ * 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 = 0;
+ int longest_fallback = 0;
+ 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;
+}
+
+/***********************************************************************
* hb_dvdnav_start
***********************************************************************
* Title and chapter start at 1
{
return 0;
}
+ dvdnav_reset( d->dvdnav );
chapter = hb_list_item( title->list_chapter, c - 1);
if (chapter != NULL)
result = dvdnav_program_play(d->dvdnav, t, chapter->pgcn, chapter->pgn);
// XXX the current version of libdvdnav can't seek outside the current
// PGC. Check if the place we're seeking to is in a different
// PGC. Position there & adjust the offset if so.
+ uint64_t pgc_offset = 0;
+ uint64_t chap_offset = 0;
hb_chapter_t *pgc_change = hb_list_item(d->list_chapter, 0 );
for ( ii = 0; ii < hb_list_count( d->list_chapter ); ++ii )
{
hb_chapter_t *chapter = hb_list_item( d->list_chapter, ii );
+ uint64_t chap_len = chapter->block_end - chapter->block_start + 1;
if ( chapter->pgcn != pgc_change->pgcn )
{
// this chapter's in a different pgc from the previous - note the
// change so we can make sector offset's be pgc relative.
+ pgc_offset = chap_offset;
pgc_change = chapter;
}
- if ( chapter->block_start <= sector && sector <= chapter->block_end )
+ if ( chap_offset <= sector && sector < chap_offset + chap_len )
{
// this chapter contains the sector we want - see if it's in a
// different pgc than the one we're currently in.
int32_t title, pgcn, pgn;
if (dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn ) != DVDNAV_STATUS_OK)
hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav));
+ // If we find ourselves in a new title, it means a title
+ // transition was made while reading data. Jumping between
+ // titles can cause the vm to get into a bad state. So
+ // reset the vm in this case.
+ if ( d->title != title )
+ dvdnav_reset( d->dvdnav );
+
if ( d->title != title || chapter->pgcn != pgcn )
{
// this chapter is in a different pgc - switch to it.
hb_log("dvdnav prog play err: %s", dvdnav_err_to_string(d->dvdnav));
}
// seek sectors are pgc-relative so remove the pgc start sector.
- sector -= pgc_change->block_start;
+ sector -= pgc_offset;
break;
}
+ chap_offset += chap_len;
}
// dvdnav will not let you seek or poll current position
result = dvdnav_get_next_block( d->dvdnav, buf, &event, &len );
if ( result == DVDNAV_STATUS_ERR )
{
- hb_log("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav));
+ hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav));
return 0;
}
switch ( event )
hb_dvdnav_t * d = &(e->dvdnav);
int result, event, len;
int chapter = 0;
+ int error_count = 0;
while ( 1 )
{
result = dvdnav_get_next_block( d->dvdnav, b->data, &event, &len );
if ( result == DVDNAV_STATUS_ERR )
{
- hb_log("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav));
- return 0;
+ hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav));
+ if (dvdnav_sector_search(d->dvdnav, 1, SEEK_CUR) != DVDNAV_STATUS_OK)
+ {
+ hb_error( "dvd: dvdnav_sector_search failed - %s",
+ dvdnav_err_to_string(d->dvdnav) );
+ return 0;
+ }
+ error_count++;
+ if (error_count > 10)
+ {
+ hb_error("dvdnav: Error, too many consecutive read errors");
+ return 0;
+ }
+ continue;
}
switch ( event )
{
if (chapter > 1)
b->new_chap = chapter;
chapter = 0;
+ error_count = 0;
return 1;
case DVDNAV_NOP:
* event can be used to query such information only when
* necessary and update the decoding/displaying accordingly.
*/
+ {
+ int tt = 0, pgcn = 0, pgn = 0;
+
+ dvdnav_current_title_program(d->dvdnav, &tt, &pgcn, &pgn);
+ if (tt != d->title)
+ {
+ // Transition to another title signals that we are done.
+ return 0;
+ }
+ }
break;
case DVDNAV_CELL_CHANGE: