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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-03 05:05:52 +00:00
Implement and use the GstStream API
This commit is contained in:
Thibault Saunier
parent
5be359cf7f
commit
5ea4667be6
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@ -135,6 +135,8 @@ struct _GESTimelinePrivate
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GCond commited_cond;
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GThread *valid_thread;
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GstStreamCollection *stream_collection;
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};
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/* private structure to contain our track-related information */
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@ -147,6 +149,7 @@ typedef struct
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GstPad *ghostpad;
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gulong probe_id;
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GstStream *stream;
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} TrackPrivate;
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enum
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@ -302,6 +305,7 @@ ges_timeline_dispose (GObject * object)
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g_list_free_full (priv->auto_transitions, gst_object_unref);
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g_hash_table_unref (priv->all_elements);
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gst_object_unref (priv->stream_collection);
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G_OBJECT_CLASS (ges_timeline_parent_class)->dispose (object);
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}
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@ -374,6 +378,63 @@ forward:
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gst_element_post_message (GST_ELEMENT_CAST (bin), message);
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}
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static GstStateChangeReturn
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ges_timeline_change_state (GstElement * element, GstStateChange transition)
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{
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GstStateChangeReturn res;
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GESTimeline *timeline = GES_TIMELINE (element);
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res = GST_ELEMENT_CLASS (ges_timeline_parent_class)->change_state (element,
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transition);
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if (transition == GST_STATE_CHANGE_READY_TO_PAUSED)
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gst_element_post_message ((GstElement *) timeline,
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gst_message_new_stream_collection ((GstObject *) timeline,
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timeline->priv->stream_collection));
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return res;
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}
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static gboolean
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ges_timeline_send_event (GstElement * element, GstEvent * event)
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{
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GESTimeline *timeline = GES_TIMELINE (element);
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if (GST_EVENT_TYPE (event) == GST_EVENT_SELECT_STREAMS) {
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GList *stream_ids = NULL, *tmp, *to_remove =
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ges_timeline_get_tracks (timeline);
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gst_event_parse_select_streams (event, &stream_ids);
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for (tmp = stream_ids; tmp; tmp = tmp->next) {
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GList *trackit;
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gchar *stream_id = tmp->data;
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LOCK_DYN (timeline);
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for (trackit = timeline->priv->priv_tracks; trackit;
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trackit = trackit->next) {
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TrackPrivate *tr_priv = trackit->data;
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if (!g_strcmp0 (gst_stream_get_stream_id (tr_priv->stream), stream_id)) {
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to_remove = g_list_remove (to_remove, tr_priv->track);
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}
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}
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UNLOCK_DYN (timeline);
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}
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for (tmp = to_remove; tmp; tmp = tmp->next) {
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GST_INFO_OBJECT (timeline, "Removed unselected track: %" GST_PTR_FORMAT,
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tmp->data);
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ges_timeline_remove_track (timeline, tmp->data);
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}
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g_list_free_full (stream_ids, g_free);
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g_list_free (to_remove);
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return TRUE;
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}
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return GST_ELEMENT_CLASS (ges_timeline_parent_class)->send_event (element,
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event);
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}
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/* we collect the first result */
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static gboolean
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_gst_array_accumulator (GSignalInvocationHint * ihint,
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@ -392,6 +453,7 @@ static void
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ges_timeline_class_init (GESTimelineClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = (GstElementClass *) klass;
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GstBinClass *bin_class = GST_BIN_CLASS (klass);
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GST_DEBUG_CATEGORY_INIT (ges_timeline_debug, "gestimeline",
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@ -405,6 +467,9 @@ ges_timeline_class_init (GESTimelineClass * klass)
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object_class->dispose = ges_timeline_dispose;
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object_class->finalize = ges_timeline_finalize;
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element_class->change_state = GST_DEBUG_FUNCPTR (ges_timeline_change_state);
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element_class->send_event = GST_DEBUG_FUNCPTR (ges_timeline_send_event);
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bin_class->handle_message = GST_DEBUG_FUNCPTR (ges_timeline_handle_message);
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/**
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@ -597,6 +662,7 @@ ges_timeline_init (GESTimeline * self)
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g_hash_table_new_full (g_str_hash, g_str_equal, g_free, gst_object_unref);
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priv->stream_start_group_id = -1;
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priv->stream_collection = gst_stream_collection_new (NULL);
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g_signal_connect_after (self, "select-tracks-for-object",
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G_CALLBACK (select_tracks_for_object_default), NULL);
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@ -1405,6 +1471,34 @@ layer_object_removed_cb (GESLayer * layer, GESClip * clip,
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GST_DEBUG ("Done");
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}
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static gboolean
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update_stream_object (TrackPrivate * tr_priv)
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{
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gboolean res = FALSE;
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GstStreamType type = GST_STREAM_TYPE_UNKNOWN;
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gchar *stream_id;
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g_object_get (tr_priv->track, "id", &stream_id, NULL);
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if (tr_priv->track->type == GES_TRACK_TYPE_VIDEO)
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type = GST_STREAM_TYPE_VIDEO;
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if (tr_priv->track->type == GES_TRACK_TYPE_AUDIO)
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type = GST_STREAM_TYPE_AUDIO;
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if (!tr_priv->stream ||
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g_strcmp0 (stream_id, gst_stream_get_stream_id (tr_priv->stream))) {
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res = TRUE;
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gst_object_replace ((GstObject **) & tr_priv->stream,
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(GstObject *) gst_stream_new (stream_id,
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(GstCaps *) ges_track_get_caps (tr_priv->track),
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type, GST_STREAM_FLAG_NONE)
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);
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}
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g_free (stream_id);
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return res;
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}
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static void
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trackelement_start_changed_cb (GESTrackElement * child,
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GParamSpec * arg G_GNUC_UNUSED, GESTimeline * timeline)
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@ -1436,7 +1530,6 @@ _pad_probe_cb (GstPad * mixer_pad, GstPadProbeInfo * info,
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{
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GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
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GESTimeline *timeline = tr_priv->timeline;
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gchar *stream_id;
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if (GST_EVENT_TYPE (event) == GST_EVENT_STREAM_START) {
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LOCK_DYN (timeline);
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@ -1447,10 +1540,10 @@ _pad_probe_cb (GstPad * mixer_pad, GstPadProbeInfo * info,
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}
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gst_event_unref (event);
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g_object_get (tr_priv->track, "id", &stream_id, NULL);
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info->data = gst_event_new_stream_start (stream_id);
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gst_event_set_group_id (GST_PAD_PROBE_INFO_EVENT (info),
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timeline->priv->stream_start_group_id);
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event = info->data =
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gst_event_new_stream_start (gst_stream_get_stream_id (tr_priv->stream));
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gst_event_set_stream (event, tr_priv->stream);
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gst_event_set_group_id (event, timeline->priv->stream_start_group_id);
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UNLOCK_DYN (timeline);
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return GST_PAD_PROBE_REMOVE;
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@ -1898,6 +1991,10 @@ ges_timeline_add_track (GESTimeline * timeline, GESTrack * track)
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tr_priv->timeline = timeline;
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tr_priv->track = track;
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update_stream_object (tr_priv);
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gst_stream_collection_add_stream (timeline->priv->stream_collection,
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gst_object_ref (tr_priv->stream));
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/* Add the track to the list of tracks we track */
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LOCK_DYN (timeline);
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timeline->priv->priv_tracks = g_list_append (timeline->priv->priv_tracks,
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@ -2174,12 +2271,24 @@ ges_timeline_commit_unlocked (GESTimeline * timeline)
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if (timeline->priv->expected_commited == 0) {
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g_signal_emit (timeline, ges_timeline_signals[COMMITED], 0);
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} else {
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GstStreamCollection *collection = gst_stream_collection_new (NULL);
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for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
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TrackPrivate *tr_priv =
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g_list_find_custom (timeline->priv->priv_tracks, tmp->data,
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(GCompareFunc) custom_find_track)->data;
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update_stream_object (tr_priv);
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gst_stream_collection_add_stream (collection,
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gst_object_ref (tr_priv->stream));
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g_signal_connect (tmp->data, "commited", G_CALLBACK (track_commited_cb),
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timeline);
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if (!ges_track_commit (GES_TRACK (tmp->data)))
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res = FALSE;
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}
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gst_object_unref (timeline->priv->stream_collection);
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timeline->priv->stream_collection = collection;
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}
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return res;
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@ -2218,6 +2327,7 @@ gboolean
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ges_timeline_commit (GESTimeline * timeline)
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{
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gboolean ret;
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GstStreamCollection *pcollection = timeline->priv->stream_collection;
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g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
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@ -2225,6 +2335,12 @@ ges_timeline_commit (GESTimeline * timeline)
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ret = ges_timeline_commit_unlocked (timeline);
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UNLOCK_DYN (timeline);
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if (pcollection != timeline->priv->stream_collection) {
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gst_element_post_message ((GstElement *) timeline,
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gst_message_new_stream_collection ((GstObject *) timeline,
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timeline->priv->stream_collection));
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}
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ges_timeline_emit_snapping (timeline, NULL, NULL, GST_CLOCK_TIME_NONE);
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return ret;
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}
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@ -402,6 +402,43 @@ ges_track_change_state (GstElement * element, GstStateChange transition)
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transition);
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}
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static void
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ges_track_handle_message (GstBin * bin, GstMessage * message)
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{
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GESTrack *track = GES_TRACK (bin);
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if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_STREAM_COLLECTION) {
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gint i;
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GList *selected_streams = NULL;
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GstStreamCollection *collection;
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gst_message_parse_stream_collection (message, &collection);
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for (i = 0; i < gst_stream_collection_get_size (collection); i++) {
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GstStream *stream = gst_stream_collection_get_stream (collection, i);
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GstStreamType stype = gst_stream_get_stream_type (stream);
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if ((track->type == GES_TRACK_TYPE_VIDEO
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&& stype == GST_STREAM_TYPE_VIDEO)
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|| (track->type == GES_TRACK_TYPE_AUDIO
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&& stype == GST_STREAM_TYPE_AUDIO)
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|| (stype == GST_STREAM_TYPE_UNKNOWN)) {
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selected_streams =
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g_list_append (selected_streams,
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(gchar *) gst_stream_get_stream_id (stream));
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}
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}
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if (selected_streams) {
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gst_element_send_event (GST_ELEMENT (GST_MESSAGE_SRC (message)),
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gst_event_new_select_streams (selected_streams));
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g_list_free (selected_streams);
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}
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}
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gst_element_post_message (GST_ELEMENT_CAST (bin), message);
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}
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/* GObject virtual methods */
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static void
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ges_track_get_property (GObject * object, guint property_id,
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@ -567,9 +604,12 @@ ges_track_class_init (GESTrackClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GstBinClass *bin_class = GST_BIN_CLASS (klass);
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (ges_track_change_state);
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bin_class->handle_message = GST_DEBUG_FUNCPTR (ges_track_handle_message);
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object_class->get_property = ges_track_get_property;
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object_class->set_property = ges_track_set_property;
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object_class->dispose = ges_track_dispose;
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@ -144,7 +144,7 @@ ges_base_bin_init (GESBaseBin * self)
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}
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static GstFlowReturn
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gst_bin_src_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
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ges_base_bin_src_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
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{
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GstFlowReturn result, chain_result;
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GESBaseBin *self = GES_BASE_BIN (GST_OBJECT_PARENT (parent));
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@ -186,6 +186,7 @@ ges_base_bin_set_timeline (GESBaseBin * self, GESTimeline * timeline)
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return FALSE;
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}
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ges_timeline_commit (timeline);
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for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
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GstPad *gpad;
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gchar *name = NULL;
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@ -238,7 +239,7 @@ ges_base_bin_set_timeline (GESBaseBin * self, GESTimeline * timeline)
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proxy_pad = GST_PAD (gst_proxy_pad_get_internal (GST_PROXY_PAD (gpad)));
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gst_flow_combiner_add_pad (priv->flow_combiner, proxy_pad);
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gst_pad_set_chain_function (proxy_pad, gst_bin_src_chain);
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gst_pad_set_chain_function (proxy_pad, ges_base_bin_src_chain);
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gst_object_unref (proxy_pad);
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GST_DEBUG_OBJECT (sbin, "Adding pad: %" GST_PTR_FORMAT, gpad);
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}
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@ -142,6 +142,7 @@ typedef struct
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GCond cond;
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gulong loaded_sigid;
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gulong error_sigid;
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GESDemux *self;
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} TimelineConstructionData;
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static void
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@ -237,6 +238,9 @@ done:
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gst_clear_object (&project);
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GST_INFO_OBJECT (data->self, "Timeline properly loaded: %" GST_PTR_FORMAT,
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data->timeline);
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ges_base_bin_set_timeline (GES_BASE_BIN (data->self), data->timeline);
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g_cond_broadcast (&data->cond);
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g_mutex_unlock (&data->lock);
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@ -290,6 +294,7 @@ ges_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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uri = gst_filename_to_uri (filename, NULL);
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data.uri = uri;
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data.self = self;
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g_main_context_invoke (main_context,
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(GSourceFunc) ges_timeline_new_from_uri_from_main_thread, &data);
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@ -309,9 +314,6 @@ ges_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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goto error;
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}
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GST_INFO_OBJECT (self, "Timeline properly loaded: %" GST_PTR_FORMAT,
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data.timeline);
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ges_base_bin_set_timeline (GES_BASE_BIN (self), data.timeline);
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done:
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g_free (filename);
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g_free (uri);
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@ -1325,7 +1325,7 @@ ghost_event_probe_handler (GstPad * ghostpad G_GNUC_UNUSED,
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FALSE)) {
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gst_event_unref (event);
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event = info->data = gst_event_new_stream_start (g_strdup (priv->id));
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event = info->data = gst_event_new_stream_start (priv->id);
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GST_INFO_OBJECT (comp, "forward stream-start %p (%s)", event, priv->id);
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} else {
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GST_DEBUG_OBJECT (comp, "dropping stream-start %p", event);
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