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flvdemux: Fix threading issue in index handling

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This commit is contained in:
Nicolas Dufresne 2012-04-05 17:17:22 -04:00 committed by Sebastian Dröge
parent 94c5f6dcc9
commit 628816784f
1 changed files with 69 additions and 29 deletions
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98
gst/flv/gstflvdemux.c
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@ -99,13 +99,15 @@ static gboolean gst_flv_demux_handle_seek_pull (GstFlvDemux * demux,
static gboolean gst_flv_demux_query (GstPad * pad, GstQuery * query);
static gboolean gst_flv_demux_src_event (GstPad * pad, GstEvent * event);
static GstIndex *gst_flv_demux_get_index (GstElement * element);
static void
gst_flv_demux_parse_and_add_index_entry (GstFlvDemux * demux, GstClockTime ts,
guint64 pos, gboolean keyframe)
{
static GstIndexAssociation associations[2];
static GstIndexEntry *entry;
GstIndexAssociation associations[2];
GstIndex *index;
GstIndexEntry *entry;
GST_LOG_OBJECT (demux,
"adding key=%d association %" GST_TIME_FORMAT "-> %" G_GUINT64_FORMAT,
@ -115,8 +117,13 @@ gst_flv_demux_parse_and_add_index_entry (GstFlvDemux * demux, GstClockTime ts,
if (!demux->upstream_seekable)
return;
index = gst_flv_demux_get_index (GST_ELEMENT (demux));
if (!index)
return;
/* entry may already have been added before, avoid adding indefinitely */
entry = gst_index_get_assoc_entry (demux->index, demux->index_id,
entry = gst_index_get_assoc_entry (index, demux->index_id,
GST_INDEX_LOOKUP_EXACT, GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, pos);
if (entry) {
@ -132,6 +139,7 @@ gst_flv_demux_parse_and_add_index_entry (GstFlvDemux * demux, GstClockTime ts,
if (time != ts || key != ! !keyframe)
GST_DEBUG_OBJECT (demux, "metadata mismatch");
#endif
gst_object_unref (index);
return;
}
@ -140,7 +148,7 @@ gst_flv_demux_parse_and_add_index_entry (GstFlvDemux * demux, GstClockTime ts,
associations[1].format = GST_FORMAT_BYTES;
associations[1].value = pos;
gst_index_add_associationv (demux->index, demux->index_id,
gst_index_add_associationv (index, demux->index_id,
(keyframe) ? GST_ASSOCIATION_FLAG_KEY_UNIT :
GST_ASSOCIATION_FLAG_DELTA_UNIT, 2,
(const GstIndexAssociation *) &associations);
@ -149,6 +157,8 @@ gst_flv_demux_parse_and_add_index_entry (GstFlvDemux * demux, GstClockTime ts,
demux->index_max_pos = pos;
if (ts > demux->index_max_time)
demux->index_max_time = ts;
gst_object_unref (index);
}
static gchar *
@ -606,7 +616,7 @@ gst_flv_demux_parse_tag_script (GstFlvDemux * demux, GstBuffer * buffer)
g_free (function_name);
if (demux->index && demux->times && demux->filepositions) {
if (demux->times && demux->filepositions) {
guint num;
/* If an index was found, insert associations */
@ -986,7 +996,7 @@ gst_flv_demux_parse_tag_audio (GstFlvDemux * demux, GstBuffer * buffer)
/* Only add audio frames to the index if we have no video,
* and if the index is not yet complete */
if (!demux->has_video && demux->index && !demux->indexed) {
if (!demux->has_video && !demux->indexed) {
gst_flv_demux_parse_and_add_index_entry (demux,
GST_BUFFER_TIMESTAMP (outbuf), demux->cur_tag_offset, TRUE);
}
@ -1359,7 +1369,7 @@ gst_flv_demux_parse_tag_video (GstFlvDemux * demux, GstBuffer * buffer)
if (!keyframe)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
if (!demux->indexed && demux->index) {
if (!demux->indexed) {
gst_flv_demux_parse_and_add_index_entry (demux,
GST_BUFFER_TIMESTAMP (outbuf), demux->cur_tag_offset, keyframe);
}
@ -1508,7 +1518,7 @@ gst_flv_demux_parse_tag_timestamp (GstFlvDemux * demux, gboolean index,
ret = pts * GST_MSECOND;
GST_LOG_OBJECT (demux, "pts: %" GST_TIME_FORMAT, GST_TIME_ARGS (ret));
if (index && demux->index && !demux->indexed && (type == 9 || (type == 8
if (index && !demux->indexed && (type == 9 || (type == 8
&& !demux->has_video))) {
gst_flv_demux_parse_and_add_index_entry (demux, ret, demux->offset,
keyframe);
@ -2139,6 +2149,7 @@ static GstFlowReturn
gst_flv_demux_seek_to_prev_keyframe (GstFlvDemux * demux)
{
GstFlowReturn ret = GST_FLOW_UNEXPECTED;
GstIndex *index;
GstIndexEntry *entry = NULL;
GST_DEBUG_OBJECT (demux,
@ -2157,28 +2168,34 @@ gst_flv_demux_seek_to_prev_keyframe (GstFlvDemux * demux)
GST_DEBUG_OBJECT (demux, "locating previous position");
index = gst_flv_demux_get_index (GST_ELEMENT (demux));
/* locate index entry before previous start position */
if (demux->index)
entry = gst_index_get_assoc_entry (demux->index, demux->index_id,
if (index) {
entry = gst_index_get_assoc_entry (index, demux->index_id,
GST_INDEX_LOOKUP_BEFORE, GST_ASSOCIATION_FLAG_KEY_UNIT,
GST_FORMAT_BYTES, demux->from_offset - 1);
if (entry) {
gint64 bytes, time;
if (entry) {
gint64 bytes, time;
gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &bytes);
gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &bytes);
gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
GST_DEBUG_OBJECT (demux, "found index entry for %" G_GINT64_FORMAT
" at %" GST_TIME_FORMAT ", seeking to %" G_GINT64_FORMAT,
demux->offset - 1, GST_TIME_ARGS (time), bytes);
GST_DEBUG_OBJECT (demux, "found index entry for %" G_GINT64_FORMAT
" at %" GST_TIME_FORMAT ", seeking to %" G_GINT64_FORMAT,
demux->offset - 1, GST_TIME_ARGS (time), bytes);
/* setup for next section */
demux->to_offset = demux->from_offset;
gst_flv_demux_move_to_offset (demux, bytes, FALSE);
ret = GST_FLOW_OK;
/* setup for next section */
demux->to_offset = demux->from_offset;
gst_flv_demux_move_to_offset (demux, bytes, FALSE);
ret = GST_FLOW_OK;
}
gst_object_unref (index);
}
done:
return ret;
}
@ -2435,15 +2452,18 @@ gst_flv_demux_find_offset (GstFlvDemux * demux, GstSegment * segment)
{
gint64 bytes = 0;
gint64 time = 0;
GstIndex *index;
GstIndexEntry *entry;
g_return_val_if_fail (segment != NULL, 0);
time = segment->last_stop;
if (demux->index) {
index = gst_flv_demux_get_index (GST_ELEMENT (demux));
if (index) {
/* Let's check if we have an index entry for that seek time */
entry = gst_index_get_assoc_entry (demux->index, demux->index_id,
entry = gst_index_get_assoc_entry (index, demux->index_id,
GST_INDEX_LOOKUP_BEFORE, GST_ASSOCIATION_FLAG_KEY_UNIT,
GST_FORMAT_TIME, time);
@ -2467,6 +2487,8 @@ gst_flv_demux_find_offset (GstFlvDemux * demux, GstSegment * segment)
GST_DEBUG_OBJECT (demux, "no index entry found for %" GST_TIME_FORMAT,
GST_TIME_ARGS (segment->start));
}
gst_object_unref (index);
}
return bytes;
@ -2884,10 +2906,17 @@ gst_flv_demux_sink_event (GstPad * pad, GstEvent * event)
ret = gst_flv_demux_push_src_event (demux, event);
break;
case GST_EVENT_EOS:
{
GstIndex *index;
GST_DEBUG_OBJECT (demux, "received EOS");
if (demux->index) {
index = gst_flv_demux_get_index (GST_ELEMENT (demux));
if (index) {
GST_DEBUG_OBJECT (demux, "committing index");
gst_index_commit (demux->index, demux->index_id);
gst_index_commit (index, demux->index_id);
gst_object_unref (index);
}
if (!demux->no_more_pads) {
gst_element_no_more_pads (GST_ELEMENT (demux));
@ -2898,6 +2927,7 @@ gst_flv_demux_sink_event (GstPad * pad, GstEvent * event)
GST_WARNING_OBJECT (demux, "failed pushing EOS on streams");
ret = TRUE;
break;
}
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
@ -3035,6 +3065,7 @@ gst_flv_demux_query (GstPad * pad, GstQuery * query)
}
}
res = TRUE;
/* FIXME, check index this way is not thread safe */
if (fmt != GST_FORMAT_TIME || !demux->index) {
gst_query_set_seeking (query, fmt, FALSE, -1, -1);
} else if (demux->random_access) {
@ -3132,22 +3163,32 @@ static void
gst_flv_demux_set_index (GstElement * element, GstIndex * index)
{
GstFlvDemux *demux = GST_FLV_DEMUX (element);
GstIndex *old_index;
GST_OBJECT_LOCK (demux);
if (demux->index)
gst_object_unref (demux->index);
old_index = demux->index;
if (index) {
demux->index = gst_object_ref (index);
demux->own_index = FALSE;
} else
demux->index = NULL;
if (old_index)
gst_object_unref (demux->index);
gst_object_ref (index);
GST_OBJECT_UNLOCK (demux);
/* object lock might be taken again */
if (index)
gst_index_get_writer_id (index, GST_OBJECT (element), &demux->index_id);
GST_DEBUG_OBJECT (demux, "Set index %" GST_PTR_FORMAT, demux->index);
gst_object_unref (index);
}
static GstIndex *
@ -3236,8 +3277,7 @@ gst_flv_demux_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_static_pad_template (element_class,
&flv_sink_template);
gst_element_class_add_static_pad_template (element_class, &flv_sink_template);
gst_element_class_add_static_pad_template (element_class,
&audio_src_template);
gst_element_class_add_static_pad_template (element_class,