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diff -Naur libdvdnav.orig/src/searching.c libdvdnav/src/searching.c
--- libdvdnav.orig/src/searching.c 2009-01-08 14:57:11.000000000 -0800
+++ libdvdnav/src/searching.c 2009-09-12 12:35:12.483551884 -0700
@@ -47,7 +47,7 @@
/* Return placed in vobu. */
/* Returns error status */
/* FIXME: Maybe need to handle seeking outside current cell. */
-static dvdnav_status_t dvdnav_scan_admap(dvdnav_t *this, int32_t domain, uint32_t seekto_block, uint32_t *vobu) {
+static dvdnav_status_t dvdnav_scan_admap(dvdnav_t *this, int32_t domain, uint32_t seekto_block, uint8_t next, uint32_t *vobu) {
vobu_admap_t *admap = NULL;
#ifdef LOG_DEBUG
@@ -89,7 +89,10 @@
vobu_start = next_vobu;
address++;
}
- *vobu = vobu_start;
+ if(next)
+ *vobu = next_vobu;
+ else
+ *vobu = vobu_start;
return DVDNAV_STATUS_OK;
}
fprintf(MSG_OUT, "libdvdnav: admap not located\n");
@@ -160,7 +163,7 @@
fprintf(MSG_OUT, "libdvdnav: Seeking to cell %i from choice of %i to %i\n",
cell_nr, first_cell_nr, last_cell_nr);
#endif
- if (dvdnav_scan_admap(this, state->domain, target, &vobu) == DVDNAV_STATUS_OK) {
+ if (dvdnav_scan_admap(this, state->domain, target, 0, &vobu) == DVDNAV_STATUS_OK) {
uint32_t start = state->pgc->cell_playback[cell_nr-1].first_sector;
if (vm_jump_cell_block(this->vm, cell_nr, vobu - start)) {
@@ -270,6 +273,27 @@
} else {
/* convert the target sector from Cell-relative to absolute physical sector */
target += cell->first_sector;
+ if (origin == SEEK_CUR && offset > 0) {
+ uint32_t vobu;
+ /* if we are seeking forward from the current position, make sure
+ * we move to a new position that is after our current position.
+ * simply truncating to the vobu will go backwards */
+ if (dvdnav_scan_admap(this, state->domain, target, 1, &vobu) == DVDNAV_STATUS_OK) {
+ if (vobu > cell->last_sector) {
+ if (cell_nr == last_cell_nr) {
+ break;
+ } else {
+ cell_nr++;
+ cell = &(state->pgc->cell_playback[cell_nr-1]);
+ target = cell->first_sector;
+ }
+ } else {
+ target = vobu;
+ }
+ } else {
+ break;
+ }
+ }
found = 1;
break;
}
@@ -281,7 +305,7 @@
fprintf(MSG_OUT, "libdvdnav: Seeking to cell %i from choice of %i to %i\n",
cell_nr, first_cell_nr, last_cell_nr);
#endif
- if (dvdnav_scan_admap(this, state->domain, target, &vobu) == DVDNAV_STATUS_OK) {
+ if (dvdnav_scan_admap(this, state->domain, target, 0, &vobu) == DVDNAV_STATUS_OK) {
int32_t start = state->pgc->cell_playback[cell_nr-1].first_sector;
if (vm_jump_cell_block(this->vm, cell_nr, vobu - start)) {
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