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10l off-by-one when allocating space for subs. Prevent newlines in SSA subs from overflowing the sub display. 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@11774 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
mosu 2004-01-11 13:31:32 +00:00
parent d94b5264cb
commit 7d2f55730b
1 changed files with 37 additions and 20 deletions
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57
libmpdemux/demux_mkv.cpp
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@ -466,9 +466,26 @@ unsigned int read_dword(unsigned char *p, int &pos, int size) {
return v;
}
static void
finish_text_sub_handling(mkv_demuxer_t *mkv_d, KaxBlock *block,
int64_t duration, int first_line) {
int i;
#ifdef USE_ICONV
subcp_recode1(&mkv_d->subs);
#endif
vo_sub = &mkv_d->subs;
vo_osd_changed(OSDTYPE_SUBTITLE);
for (i = first_line; i <= (mkv_d->subs.lines - 1); i++)
mkv_d->clear_subs_at[i] = block->GlobalTimecode() / 1000000 -
mkv_d->first_tc + duration;
}
static void handle_subtitles(demuxer_t *d, KaxBlock *block, int64_t duration) {
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *)d->priv;
int len, line, state, i;
int len, line, state, i, first_line;
char *s1, *s2, *buffer;
if (duration == -1) {
@ -489,12 +506,13 @@ static void handle_subtitles(demuxer_t *d, KaxBlock *block, int64_t duration) {
line = 0;
mkv_d->subs.lines++;
if (mkv_d->subs.lines> SUB_MAX_TEXT - 1 )
{
mp_msg(MSGT_DEMUX, MSGL_WARN,"[mkv] Warning: too many sublines to render, skipping\n");
mkv_d->subs.lines--;
if (mkv_d->subs.lines > SUB_MAX_TEXT) {
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Warning: too many sublines to "
"render, skipping\n");
mkv_d->subs.lines = SUB_MAX_TEXT;
return;
}
first_line = mkv_d->subs.lines - 1;
s2 = mkv_d->subs.text[mkv_d->subs.lines - 1];
state = 0;
@ -531,11 +549,15 @@ static void handle_subtitles(demuxer_t *d, KaxBlock *block, int64_t duration) {
/* Newline */
if ((*s1 == '\\') && ((unsigned int)(s1 + 1 - buffer) < data.Size()) &&
((*(s1 + 1) == 'N') || (*(s1 + 1) == 'n'))) {
mkv_d->clear_subs_at[mkv_d->subs.lines - 1] =
block->GlobalTimecode() / 1000000 - mkv_d->first_tc + duration;
mkv_d->subs.lines++;
*s2 = 0;
mkv_d->subs.lines++;
if (mkv_d->subs.lines > SUB_MAX_TEXT) {
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Warning: too many sublines to "
"render, skipping\n");
mkv_d->subs.lines = SUB_MAX_TEXT;
finish_text_sub_handling(mkv_d, block, duration, first_line);
return;
}
s2 = mkv_d->subs.text[mkv_d->subs.lines - 1];
s1 += 2;
}
@ -575,15 +597,7 @@ static void handle_subtitles(demuxer_t *d, KaxBlock *block, int64_t duration) {
*s2 = 0;
}
#ifdef USE_ICONV
subcp_recode1(&mkv_d->subs);
#endif
vo_sub = &mkv_d->subs;
vo_osd_changed(OSDTYPE_SUBTITLE);
mkv_d->clear_subs_at[mkv_d->subs.lines - 1] =
block->GlobalTimecode() / 1000000 - mkv_d->first_tc + duration;
finish_text_sub_handling(mkv_d, block, duration, first_line);
}
static mkv_track_t *new_mkv_track(mkv_demuxer_t *d) {
@ -1139,7 +1153,10 @@ static void free_mkv_demuxer(mkv_demuxer_t *d) {
for (i = 0; i < d->num_indexes; i++)
free(d->index[i].entries);
free(d->index);
for (i = 0; i <= SUB_MAX_TEXT; i++)
safefree(d->subs.text[i]);
if (d->es != NULL)
delete d->es;
if (d->saved_l1 != NULL)
@ -2452,7 +2469,7 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) {
track->tnum);
mkv_d->subs_track = track;
if (!mkv_d->subs.text[0]) {
for (i = 0; i < SUB_MAX_TEXT; i++)
for (i = 0; i <= SUB_MAX_TEXT; i++)
mkv_d->subs.text[i] = (char *)safemalloc(256);
if (!strcmp(track->codec_id, MKV_S_TEXTUTF8))