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ext/dvdread/dvdreadsrc.c: Fixes invalid reads (#158462)

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Original commit message from CVS:
* ext/dvdread/dvdreadsrc.c:
Fixes invalid reads (#158462)
This commit is contained in:
Thomas Vander Stichele 2004-11-23 12:49:59 +00:00
parent c940711eeb
commit 1edf97d3e2
2 changed files with 22 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2004-11-23 Thomas Vander Stichele <thomas at apestaart dot org>
* ext/dvdread/dvdreadsrc.c:
Fixes invalid reads (#158462)
2004-11-23 Thomas Vander Stichele <thomas at apestaart dot org>
* sys/v4l/gstv4lsrc.c:

19
ext/dvdread/dvdreadsrc.c
View file

@ -76,6 +76,7 @@ struct _DVDReadSrcPrivate
int title, chapter, angle;
int pgc_id, start_cell, cur_cell, cur_pack;
int last_cell;
int ttn, pgn, next_cell;
dvd_reader_t *dvd;
dvd_file_t *dvd_title;
@ -430,6 +431,14 @@ _seek (DVDReadSrcPrivate * priv, int title, int chapter, int angle)
priv->cur_pgc = priv->vts_file->vts_pgcit->pgci_srp[priv->pgc_id - 1].pgc;
priv->start_cell = priv->cur_pgc->program_map[priv->pgn - 1] - 1;
if (chapter + 1 == priv->tt_srpt->title[title].nr_of_ptts) {
priv->last_cell = priv->cur_pgc->nr_of_cells;
} else {
priv->last_cell =
priv->cur_pgc->program_map[(priv->vts_ptt_srpt->title[priv->ttn -
1].ptt[chapter + 1].pgn) - 1] - 1;
}
/**
* We've got enough info, time to open the title set data.
*/
@ -468,7 +477,7 @@ _read (DVDReadSrcPrivate * priv, int angle, int new_seek, GstBuffer * buf)
priv->cur_cell = priv->start_cell;
}
if (priv->cur_cell < priv->cur_pgc->nr_of_cells) {
if (priv->cur_cell < priv->last_cell) {
if (priv->new_cell)
priv->cur_cell = priv->next_cell;
@ -508,12 +517,18 @@ _read (DVDReadSrcPrivate * priv, int angle, int new_seek, GstBuffer * buf)
/**
* Read NAV packet.
*/
nav_retry:
len = DVDReadBlocks (priv->dvd_title, priv->cur_pack, 1, data);
if (len == 0) {
GST_ERROR ("Read failed for block %d", priv->cur_pack);
return -1;
}
assert (is_nav_pack (data));
if (!is_nav_pack (data)) {
priv->cur_pack++;
goto nav_retry;
}
/**