rpms
/
gstreamer1-plugins-bad-freeworld
21
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'i9-beta'
${ noResults }
gstreamer1-plugins-bad-free.../SOURCES/0003-Fixes-ZDI-CAN-22299-CV...

324 lines
12 KiB
Raw Permalink Blame History

From 274551d450e443a8c71baa95e3f8d5dad212737f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Fri, 20 Oct 2023 00:09:57 +0300
Subject: [PATCH] mxfdemux: Store GstMXFDemuxEssenceTrack in their own fixed
allocation
Previously they were stored inline inside a GArray, but as references to
the tracks were stored in various other places although the array could
still be updated (and reallocated!), this could lead to dangling
references in various places.
Instead now store them in a GPtrArray in their own allocation so each
track's memory position stays fixed.
Fixes ZDI-CAN-22299
Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3055
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5635>
---
.../gst-plugins-bad/gst/mxf/mxfdemux.c | 116 ++++++++----------
.../gst-plugins-bad/gst/mxf/mxfdemux.h | 2 +-
2 files changed, 50 insertions(+), 68 deletions(-)
diff --git a/gst/mxf/mxfdemux.c b/gst/mxf/mxfdemux.c
index 7ae4a7b54cf..6153e89a207 100644
--- a/gst/mxf/mxfdemux.c
+++ b/gst/mxf/mxfdemux.c
@@ -170,10 +170,25 @@ gst_mxf_demux_partition_free (GstMXFDemuxPartition * partition)
}
static void
-gst_mxf_demux_reset_mxf_state (GstMXFDemux * demux)
+gst_mxf_demux_essence_track_free (GstMXFDemuxEssenceTrack * t)
{
- guint i;
+ if (t->offsets)
+ g_array_free (t->offsets, TRUE);
+
+ g_free (t->mapping_data);
+
+ if (t->tags)
+ gst_tag_list_unref (t->tags);
+
+ if (t->caps)
+ gst_caps_unref (t->caps);
+
+ g_free (t);
+}
+static void
+gst_mxf_demux_reset_mxf_state (GstMXFDemux * demux)
+{
GST_DEBUG_OBJECT (demux, "Resetting MXF state");
g_list_foreach (demux->partitions, (GFunc) gst_mxf_demux_partition_free,
@@ -182,23 +197,7 @@ gst_mxf_demux_reset_mxf_state (GstMXFDemux * demux)
demux->partitions = NULL;
demux->current_partition = NULL;
-
- for (i = 0; i < demux->essence_tracks->len; i++) {
- GstMXFDemuxEssenceTrack *t =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
-
- if (t->offsets)
- g_array_free (t->offsets, TRUE);
-
- g_free (t->mapping_data);
-
- if (t->tags)
- gst_tag_list_unref (t->tags);
-
- if (t->caps)
- gst_caps_unref (t->caps);
- }
- g_array_set_size (demux->essence_tracks, 0);
+ g_ptr_array_set_size (demux->essence_tracks, 0);
}
static void
@@ -216,7 +215,7 @@ gst_mxf_demux_reset_linked_metadata (GstMXFDemux * demux)
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *track =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ g_ptr_array_index (demux->essence_tracks, i);
track->source_package = NULL;
track->delta_id = -1;
@@ -419,7 +418,7 @@ gst_mxf_demux_partition_postcheck (GstMXFDemux * demux,
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *cand =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ g_ptr_array_index (demux->essence_tracks, i);
if (cand->body_sid != partition->partition.body_sid)
continue;
@@ -861,8 +860,7 @@ gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
for (k = 0; k < demux->essence_tracks->len; k++) {
GstMXFDemuxEssenceTrack *tmp =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
- k);
+ g_ptr_array_index (demux->essence_tracks, k);
if (tmp->track_number == track->parent.track_number &&
tmp->body_sid == edata->body_sid) {
@@ -880,24 +878,23 @@ gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
}
if (!etrack) {
- GstMXFDemuxEssenceTrack tmp;
+ GstMXFDemuxEssenceTrack *tmp = g_new0 (GstMXFDemuxEssenceTrack, 1);
- memset (&tmp, 0, sizeof (tmp));
- tmp.body_sid = edata->body_sid;
- tmp.index_sid = edata->index_sid;
- tmp.track_number = track->parent.track_number;
- tmp.track_id = track->parent.track_id;
- memcpy (&tmp.source_package_uid, &package->parent.package_uid, 32);
+ tmp->body_sid = edata->body_sid;
+ tmp->index_sid = edata->index_sid;
+ tmp->track_number = track->parent.track_number;
+ tmp->track_id = track->parent.track_id;
+ memcpy (&tmp->source_package_uid, &package->parent.package_uid, 32);
if (demux->current_partition->partition.body_sid == edata->body_sid &&
demux->current_partition->partition.body_offset == 0)
- tmp.position = 0;
+ tmp->position = 0;
else
- tmp.position = -1;
+ tmp->position = -1;
- g_array_append_val (demux->essence_tracks, tmp);
+ g_ptr_array_add (demux->essence_tracks, tmp);
etrack =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
+ g_ptr_array_index (demux->essence_tracks,
demux->essence_tracks->len - 1);
new = TRUE;
}
@@ -1045,13 +1042,7 @@ gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
next:
if (new) {
- g_free (etrack->mapping_data);
- if (etrack->tags)
- gst_tag_list_unref (etrack->tags);
- if (etrack->caps)
- gst_caps_unref (etrack->caps);
-
- g_array_remove_index (demux->essence_tracks,
+ g_ptr_array_remove_index (demux->essence_tracks,
demux->essence_tracks->len - 1);
}
}
@@ -1064,7 +1055,7 @@ gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *etrack =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ g_ptr_array_index (demux->essence_tracks, i);
if (!etrack->source_package || !etrack->source_track || !etrack->caps) {
GST_ERROR_OBJECT (demux, "Failed to update essence track %u", i);
@@ -1450,7 +1441,7 @@ gst_mxf_demux_update_tracks (GstMXFDemux * demux)
for (k = 0; k < demux->essence_tracks->len; k++) {
GstMXFDemuxEssenceTrack *tmp =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, k);
+ g_ptr_array_index (demux->essence_tracks, k);
if (tmp->source_package == source_package &&
tmp->source_track == source_track) {
@@ -1939,8 +1930,7 @@ gst_mxf_demux_pad_set_component (GstMXFDemux * demux, GstMXFDemuxPad * pad,
pad->current_essence_track = NULL;
for (k = 0; k < demux->essence_tracks->len; k++) {
- GstMXFDemuxEssenceTrack *tmp =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, k);
+ GstMXFDemuxEssenceTrack *tmp = g_ptr_array_index (demux->essence_tracks, k);
if (tmp->source_package == source_package &&
tmp->source_track == source_track) {
@@ -2724,7 +2714,7 @@ gst_mxf_demux_handle_generic_container_essence_element (GstMXFDemux * demux,
if (!etrack) {
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *tmp =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ g_ptr_array_index (demux->essence_tracks, i);
if (tmp->body_sid == demux->current_partition->partition.body_sid &&
(tmp->track_number == track_number || tmp->track_number == 0)) {
@@ -3928,8 +3918,7 @@ from_track_offset:
gst_mxf_demux_set_partition_for_offset (demux, demux->offset);
for (i = 0; i < demux->essence_tracks->len; i++) {
- GstMXFDemuxEssenceTrack *t =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ GstMXFDemuxEssenceTrack *t = g_ptr_array_index (demux->essence_tracks, i);
if (index_start_position != -1 && t == etrack)
t->position = index_start_position;
@@ -3953,8 +3942,7 @@ from_track_offset:
/* Handle EOS */
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *t =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
- i);
+ g_ptr_array_index (demux->essence_tracks, i);
if (t->position > 0)
t->duration = t->position;
@@ -4192,8 +4180,7 @@ gst_mxf_demux_pull_and_handle_klv_packet (GstMXFDemux * demux)
guint i;
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *etrack =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
- i);
+ g_ptr_array_index (demux->essence_tracks, i);
if (etrack->body_sid != partition->partition.body_sid)
continue;
@@ -4664,9 +4651,8 @@ gst_mxf_demux_pad_to_track_and_position (GstMXFDemux * demux,
/* Get the corresponding essence track for the given source package and stream id */
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *track =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
- GST_LOG_OBJECT (pad,
- "Looking at essence track body_sid:%d index_sid:%d",
+ g_ptr_array_index (demux->essence_tracks, i);
+ GST_LOG_OBJECT (pad, "Looking at essence track body_sid:%d index_sid:%d",
track->body_sid, track->index_sid);
if (clip->source_track_id == 0 || (track->track_id == clip->source_track_id
&& mxf_umid_is_equal (&clip->source_package_id,
@@ -4915,8 +4901,7 @@ gst_mxf_demux_seek_push (GstMXFDemux * demux, GstEvent * event)
}
for (i = 0; i < demux->essence_tracks->len; i++) {
- GstMXFDemuxEssenceTrack *t =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ GstMXFDemuxEssenceTrack *t = g_ptr_array_index (demux->essence_tracks, i);
t->position = -1;
}
@@ -5354,8 +5339,7 @@ gst_mxf_demux_seek_pull (GstMXFDemux * demux, GstEvent * event)
}
for (i = 0; i < demux->essence_tracks->len; i++) {
- GstMXFDemuxEssenceTrack *t =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ GstMXFDemuxEssenceTrack *t = g_ptr_array_index (demux->essence_tracks, i);
t->position = -1;
}
@@ -5654,7 +5638,7 @@ gst_mxf_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *t =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack, i);
+ g_ptr_array_index (demux->essence_tracks, i);
if (t->position > 0)
t->duration = t->position;
@@ -5695,8 +5679,7 @@ gst_mxf_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *etrack =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
- i);
+ g_ptr_array_index (demux->essence_tracks, i);
etrack->position = -1;
}
ret = TRUE;
@@ -5720,8 +5703,7 @@ gst_mxf_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
for (i = 0; i < demux->essence_tracks->len; i++) {
GstMXFDemuxEssenceTrack *t =
- &g_array_index (demux->essence_tracks, GstMXFDemuxEssenceTrack,
- i);
+ g_ptr_array_index (demux->essence_tracks, i);
t->position = -1;
}
demux->current_partition = NULL;
@@ -5994,7 +5976,7 @@ gst_mxf_demux_finalize (GObject * object)
g_ptr_array_free (demux->src, TRUE);
demux->src = NULL;
- g_array_free (demux->essence_tracks, TRUE);
+ g_ptr_array_free (demux->essence_tracks, TRUE);
demux->essence_tracks = NULL;
g_hash_table_destroy (demux->metadata);
@@ -6071,8 +6053,8 @@ gst_mxf_demux_init (GstMXFDemux * demux)
g_rw_lock_init (&demux->metadata_lock);
demux->src = g_ptr_array_new ();
- demux->essence_tracks =
- g_array_new (FALSE, FALSE, sizeof (GstMXFDemuxEssenceTrack));
+ demux->essence_tracks = g_ptr_array_new_with_free_func ((GDestroyNotify)
+ gst_mxf_demux_essence_track_free);
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
diff --git a/gst/mxf/mxfdemux.h b/gst/mxf/mxfdemux.h
index d079a1de1aa..1dc8a4edb5b 100644
--- a/gst/mxf/mxfdemux.h
+++ b/gst/mxf/mxfdemux.h
@@ -266,7 +266,7 @@ struct _GstMXFDemux
GList *partitions;
GstMXFDemuxPartition *current_partition;
- GArray *essence_tracks;
+ GPtrArray *essence_tracks;
GList *pending_index_table_segments;
GList *index_tables; /* one per BodySID / IndexSID */
--
GitLab
Reference in new issue View Git Blame Copy Permalink