diff options
author | Alessandro Decina <alessandro@nnva.org> | 2006-08-25 09:42:43 +0000 |
---|---|---|
committer | Wim Taymans <wim.taymans@gmail.com> | 2006-08-25 09:42:43 +0000 |
commit | 2f4517a70b9ef85bd18d232b6596848f8a285f7c (patch) | |
tree | 2f9e807b42c9ab22328452db45a03fe0930dc91d /ext/annodex | |
parent | 2019f527f701018622083cdbba4b12b4f53875de (diff) |
ext/annodex/gstannodex.c: Do some extra sanity checks.
Original commit message from CVS:
Patch by: Alessandro Decina <alessandro at nnva dot org>
* ext/annodex/gstannodex.c: (gst_annodex_granule_to_time):
Do some extra sanity checks.
Fixes #350340.
* ext/annodex/gstcmmlenc.c: (gst_cmml_enc_change_state),
(gst_cmml_enc_parse_tag_head), (gst_cmml_enc_parse_tag_clip),
(gst_cmml_enc_push_clip), (gst_cmml_enc_push):
Check if clip->start_time is valid before adding the clip to the
track list.
Reset enc->preamble going from PAUSED to READY.
Don't use GST_FLOW_UNEXPECTED for wrong usage of the element, it is
only used for EOS.
Only post an error message if we were the one that created the fatal
GstFlowReturn value.
* ext/annodex/gstcmmlutils.c: (gst_cmml_clock_time_from_npt),
(gst_cmml_clock_time_to_granule), (gst_cmml_track_list_has_clip):
Parse the seconds field of the npt-sec time format using %llu rather than
%d and check that the value scaled by GST_SECOND doesn't overflow.
Use guint64(s) to represent the keyindex and keyoffset fields of a granulepos.
Lookup a clip's track with clip->track rather than clip->id which
makes no sense.
Identify a clip by its track and start time and not its xml id.
do some more input checking and make sure we don't do undefined shifts.
* tests/check/elements/cmmldec.c: (setup_cmmldec),
(teardown_cmmldec), (check_output_buffer_is_equal), (push_data),
(cmml_tag_message_pop), (check_headers), (push_clip_full),
(push_clip), (push_empty_clip), (check_output_clip),
(GST_START_TEST), (cmmldec_suite):
* tests/check/elements/cmmlenc.c: (setup_cmmlenc),
(teardown_cmmlenc), (check_output_buffer_is_equal), (push_data),
(check_headers), (push_clip), (check_clip_times), (check_clip),
(check_empty_clip), (GST_START_TEST), (cmmlenc_suite):
Added some more checks.
Diffstat (limited to 'ext/annodex')
-rw-r--r-- | ext/annodex/gstannodex.c | 4 | ||||
-rw-r--r-- | ext/annodex/gstcmmlenc.c | 20 | ||||
-rw-r--r-- | ext/annodex/gstcmmlutils.c | 34 |
3 files changed, 37 insertions, 21 deletions
diff --git a/ext/annodex/gstannodex.c b/ext/annodex/gstannodex.c index fa935f25..22fe798d 100644 --- a/ext/annodex/gstannodex.c +++ b/ext/annodex/gstannodex.c @@ -39,13 +39,15 @@ gst_annodex_granule_to_time (gint64 granulepos, gint64 granulerate_n, gint64 granulerate; GstClockTime res; + g_return_val_if_fail (granuleshift <= 64, GST_CLOCK_TIME_NONE); + if (granulepos == -1) return GST_CLOCK_TIME_NONE; if (granulepos == 0 || granulerate_n == 0 || granulerate_d == 0) return 0; - if (granuleshift != 0) { + if (granuleshift != 0 && granuleshift != 64) { keyindex = granulepos >> granuleshift; keyoffset = granulepos - (keyindex << granuleshift); granulepos = keyindex + keyoffset; diff --git a/ext/annodex/gstcmmlenc.c b/ext/annodex/gstcmmlenc.c index d8392c63..9b2c03c6 100644 --- a/ext/annodex/gstcmmlenc.c +++ b/ext/annodex/gstcmmlenc.c @@ -259,6 +259,7 @@ gst_cmml_enc_change_state (GstElement * element, GstStateChange transition) gst_cmml_track_list_destroy (enc->tracks); enc->tracks = NULL; g_free (enc->preamble); + enc->preamble = NULL; gst_cmml_parser_free (enc->parser); break; } @@ -468,7 +469,7 @@ gst_cmml_enc_parse_tag_head (GstCmmlEnc * enc, GstCmmlTagHead * head) flow_unexpected: GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL), ("got head tag before preamble")); - enc->flow_return = GST_FLOW_UNEXPECTED; + enc->flow_return = GST_FLOW_ERROR; return; push_error: gst_caps_unref (caps); @@ -507,6 +508,14 @@ gst_cmml_enc_parse_tag_clip (GstCmmlEnc * enc, GstCmmlTagClip * clip) (gchar *) clip->track); if (prev_clip) { prev_clip_time = prev_clip->start_time; + if (prev_clip_time > clip->start_time) { + GST_ELEMENT_ERROR (enc, STREAM, ENCODE, + (NULL), ("previous clip start time > current clip (%s) start time", + clip->id)); + enc->flow_return = GST_FLOW_ERROR; + return; + } + /* we don't need the prev clip anymore */ gst_cmml_track_list_del_clip (enc->tracks, prev_clip); } @@ -526,12 +535,6 @@ gst_cmml_enc_push_clip (GstCmmlEnc * enc, GstCmmlTagClip * clip, gchar *clip_string; gint64 granulepos; - if (prev_clip_time != GST_CLOCK_TIME_NONE && - prev_clip_time > clip->start_time) { - GST_WARNING_OBJECT (enc, - "previous clip start time > current clip (%s) start time", clip->id); - } - /* encode the clip */ clip_string = (gchar *) gst_cmml_parser_tag_clip_to_string (enc->parser, clip); @@ -591,8 +594,7 @@ gst_cmml_enc_push (GstCmmlEnc * enc, GstBuffer * buffer) res = gst_pad_push (enc->srcpad, buffer); if (GST_FLOW_IS_FATAL (res)) - GST_ELEMENT_ERROR (enc, STREAM, ENCODE, - (NULL), ("could not push buffer: %s", gst_flow_get_name (res))); + GST_WARNING_OBJECT (enc, "push returned: %s", gst_flow_get_name (res)); return res; } diff --git a/ext/annodex/gstcmmlutils.c b/ext/annodex/gstcmmlutils.c index a9e561f8..48f7fb05 100644 --- a/ext/annodex/gstcmmlutils.c +++ b/ext/annodex/gstcmmlutils.c @@ -58,15 +58,17 @@ gst_cmml_clock_time_from_npt (const gchar * time) seconds_t = seconds * GST_SECOND; } else { + guint64 u64seconds; + /* parse npt-sec */ hours_t = 0; minutes = 0; - fields = sscanf (time, "%d.%d", &seconds, &mseconds); + fields = sscanf (time, "%llu.%d", &u64seconds, &mseconds); if (seconds < 0) goto bad_input; - seconds_t = gst_util_uint64_scale (seconds, GST_SECOND, 1); - if (seconds == G_MAXUINT64) + seconds_t = gst_util_uint64_scale_int (u64seconds, GST_SECOND, 1); + if (seconds_t == G_MAXUINT64) goto overflow; } @@ -177,9 +179,13 @@ gst_cmml_clock_time_to_granule (GstClockTime prev_time, GstClockTime current_time, gint64 granulerate_n, gint64 granulerate_d, guint8 granuleshift) { - gint64 keyindex, keyoffset, granulepos; + guint64 keyindex, keyoffset, granulepos, maxoffset; gint64 granulerate; + g_return_val_if_fail (granulerate_d != 0, -1); + g_return_val_if_fail (granuleshift > 0, -1); + g_return_val_if_fail (granuleshift <= 64, -1); + if (prev_time == GST_CLOCK_TIME_NONE) prev_time = 0; @@ -191,14 +197,23 @@ gst_cmml_clock_time_to_granule (GstClockTime prev_time, granulerate_d, granulerate_n); prev_time = prev_time / granulerate; - if (prev_time > (((guint64) 1 << (64 - granuleshift)) - 1)) + + /* granuleshift == 64 should be a << 0 shift, which is defined */ + maxoffset = ((guint64) 1 << (64 - granuleshift)) - 1; + if (prev_time > maxoffset) /* we need more than 64 - granuleshift bits to encode prev_time */ goto overflow; keyindex = prev_time << granuleshift; keyoffset = (current_time / granulerate) - prev_time; - if (keyoffset > ((guint64) 1 << granuleshift) - 1) + /* make sure we don't shift to the limits of the types as this is undefined. */ + if (granuleshift == 64) + maxoffset = G_MAXUINT64; + else + maxoffset = ((guint64) 1 << granuleshift) - 1; + + if (keyoffset > maxoffset) /* we need more than granuleshift bits to encode prev_time - current_time */ goto overflow; @@ -301,16 +316,13 @@ gst_cmml_track_list_has_clip (GHashTable * tracks, GstCmmlTagClip * clip) GstCmmlTrack *track; GList *walk; GstCmmlTagClip *tmp; - gchar *clip_id = (gchar *) clip->id; gboolean res = FALSE; - g_return_val_if_fail (clip_id != NULL, FALSE); - - track = g_hash_table_lookup (tracks, clip_id); + track = g_hash_table_lookup (tracks, (gchar *) clip->track); if (track) { for (walk = track->clips; walk; walk = g_list_next (walk)) { tmp = GST_CMML_TAG_CLIP (walk->data); - if (!strcmp ((gchar *) tmp->id, clip_id)) { + if (tmp->start_time == clip->start_time) { res = TRUE; break; } |