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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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structured-interface: Factor out method to get element to set property
Used to set properties or keyframes Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/merge_requests/227>
This commit is contained in:
Thibault Saunier
parent
ba763cfaf3
commit
811d63439f
1 changed files with 131 additions and 103 deletions
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@ -30,6 +30,32 @@
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#define LAST_CONTAINER_QDATA g_quark_from_string("ges-structured-last-container")
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#define LAST_CHILD_QDATA g_quark_from_string("ges-structured-last-child")
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#ifdef G_HAVE_ISO_VARARGS
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#define REPORT_UNLESS(condition, errpoint, ...) \
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G_STMT_START { \
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if (!(condition)) { \
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gchar *tmp = gst_info_strdup_printf(__VA_ARGS__); \
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*error = g_error_new_literal (GES_ERROR, 0, tmp); \
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g_free (tmp); \
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goto errpoint; \
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} \
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} \
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G_STMT_END
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#else /* G_HAVE_GNUC_VARARGS */
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#ifdef G_HAVE_GNUC_VARARGS
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#define REPORT_UNLESS(condition, errpoint, args...) \
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G_STMT_START { \
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if (!(condition)) { \
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gchar *tmp = gst_info_strdup_printf(##args); \
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*error = g_error_new_literal (GES_ERROR, 0, tmp); \
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g_free (tmp); \
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goto errpoint; \
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} \
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} \
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G_STMT_END
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#endif /* G_HAVE_ISO_VARARGS */
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#endif /* G_HAVE_GNUC_VARARGS */
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#define GET_AND_CHECK(name,type,var,label) G_STMT_START {\
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gboolean found = FALSE; \
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\
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@ -124,6 +150,77 @@ _check_fields (GstStructure * structure, FieldsError fields_error,
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return TRUE;
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}
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static GESTimelineElement *
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find_element_for_property (GESTimeline * timeline, GstStructure * structure,
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gchar ** property_name, gboolean require_track_element, GError ** error)
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{
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GList *tmp;
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const gchar *element_name;
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GESTimelineElement *element;
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element_name = gst_structure_get_string (structure, "element-name");
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if (element_name == NULL) {
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element = g_object_get_qdata (G_OBJECT (timeline), LAST_CHILD_QDATA);
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if (element)
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gst_object_ref (element);
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} else {
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element = ges_timeline_get_element (timeline, element_name);
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}
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if (*property_name == NULL) {
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gchar *tmpstr = *property_name;
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const gchar *name = gst_structure_get_name (structure);
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REPORT_UNLESS (g_str_has_prefix (name, "set-"), err,
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"Could not find any property name in %" GST_PTR_FORMAT, structure);
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*property_name = g_strdup (&tmpstr[4]);
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g_free (tmpstr);
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}
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if (element) {
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if (!ges_timeline_element_lookup_child (element,
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*property_name, NULL, NULL)) {
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gst_clear_object (&element);
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}
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}
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if (!element) {
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element = g_object_get_qdata (G_OBJECT (timeline), LAST_CONTAINER_QDATA);
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if (element)
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gst_object_ref (element);
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}
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REPORT_UNLESS (GES_IS_TIMELINE_ELEMENT (element), err,
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"Could not find child %s from %" GST_PTR_FORMAT, element_name, structure);
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if (!require_track_element || GES_IS_TRACK_ELEMENT (element))
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return element;
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REPORT_UNLESS (GES_IS_CONTAINER (element), err,
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"Could not find child %s from %" GST_PTR_FORMAT, element_name, structure);
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for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = tmp->next) {
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if (ges_timeline_element_lookup_child (tmp->data, *property_name, NULL,
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NULL)) {
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gst_object_replace ((GstObject **) & element, tmp->data);
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break;
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}
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}
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REPORT_UNLESS (GES_IS_TRACK_ELEMENT (element), err,
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"Could not find TrackElement from %" GST_PTR_FORMAT, structure);
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return element;
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err:
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g_clear_object (&element);
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return element;
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}
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gboolean
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_ges_save_timeline_if_needed (GESTimeline * timeline, GstStructure * structure,
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GError ** error)
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@ -144,14 +241,14 @@ gboolean
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_ges_add_remove_keyframe_from_struct (GESTimeline * timeline,
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GstStructure * structure, GError ** error)
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{
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GESTrackElement *element;
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GESTimelineElement *element = NULL;
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gboolean absolute;
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gdouble value;
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GstClockTime timestamp;
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GstControlBinding *binding = NULL;
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GstTimedValueControlSource *source = NULL;
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gchar *element_name = NULL, *property_name = NULL;
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gchar *property_name = NULL;
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gboolean ret = FALSE;
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gboolean setting_value;
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@ -166,59 +263,28 @@ _ges_add_remove_keyframe_from_struct (GESTimeline * timeline,
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if (!_check_fields (structure, fields_error, error))
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return FALSE;
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GET_AND_CHECK ("element-name", G_TYPE_STRING, &element_name, done);
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GET_AND_CHECK ("property-name", G_TYPE_STRING, &property_name, done);
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GET_AND_CHECK ("timestamp", GST_TYPE_CLOCK_TIME, ×tamp, done);
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element =
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(GESTrackElement *) ges_timeline_get_element (timeline, element_name);
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if (GES_IS_CLIP (element)) {
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GList *tmp;
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for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = tmp->next) {
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if (ges_timeline_element_lookup_child (tmp->data, property_name, NULL,
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NULL)) {
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gst_object_replace ((GstObject **) & element, tmp->data);
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break;
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}
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}
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}
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if (!GES_IS_TRACK_ELEMENT (element)) {
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*error =
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g_error_new (GES_ERROR, 0, "Could not find TrackElement %s",
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element_name);
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GET_AND_CHECK ("property-name", G_TYPE_STRING, &property_name, done);
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if (!(element =
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find_element_for_property (timeline, structure, &property_name, TRUE,
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error)))
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goto done;
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}
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binding = ges_track_element_get_control_binding (element, property_name);
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if (binding == NULL) {
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*error = g_error_new (GES_ERROR, 0, "No control binding found for %s:%s"
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" you should first set-control-binding on it",
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element_name, property_name);
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goto done;
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}
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REPORT_UNLESS (binding =
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ges_track_element_get_control_binding (GES_TRACK_ELEMENT (element),
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property_name),
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done, "No control binding found for %" GST_PTR_FORMAT, structure);
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g_object_get (binding, "control-source", &source, NULL);
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if (source == NULL) {
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*error = g_error_new (GES_ERROR, 0, "No control source found for %s:%s"
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" you should first set-control-binding on it",
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element_name, property_name);
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goto done;
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}
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if (!GST_IS_TIMED_VALUE_CONTROL_SOURCE (source)) {
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*error = g_error_new (GES_ERROR, 0, "You can use add-keyframe"
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" only on GstTimedValueControlSource not %s",
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G_OBJECT_TYPE_NAME (source));
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goto done;
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}
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REPORT_UNLESS (source, done,
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"No control source found for '%" GST_PTR_FORMAT
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"' you should first set-control-binding on it", structure);
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REPORT_UNLESS (GST_IS_TIMED_VALUE_CONTROL_SOURCE (source), done,
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"You can use add-keyframe"
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" only on GstTimedValueControlSource not %s",
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G_OBJECT_TYPE_NAME (source));
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g_object_get (binding, "absolute", &absolute, NULL);
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if (absolute) {
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@ -226,8 +292,8 @@ _ges_add_remove_keyframe_from_struct (GESTimeline * timeline,
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const GValue *v;
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GValue v2 = G_VALUE_INIT;
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if (!ges_timeline_element_lookup_child (GES_TIMELINE_ELEMENT (element),
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property_name, NULL, &pspec)) {
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if (!ges_timeline_element_lookup_child (element, property_name, NULL,
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&pspec)) {
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*error =
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g_error_new (GES_ERROR, 0, "Could not get property %s for %s",
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property_name, GES_TIMELINE_ELEMENT_NAME (element));
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@ -262,8 +328,8 @@ _ges_add_remove_keyframe_from_struct (GESTimeline * timeline,
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} else
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GET_AND_CHECK ("value", G_TYPE_DOUBLE, &value, done);
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setting_value
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= !g_strcmp0 (gst_structure_get_name (structure), "add-keyframe");
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setting_value =
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!g_strcmp0 (gst_structure_get_name (structure), "add-keyframe");
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if (setting_value)
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ret = gst_timed_value_control_source_set (source, timestamp, value);
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else
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@ -278,9 +344,8 @@ _ges_add_remove_keyframe_from_struct (GESTimeline * timeline,
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ret = _ges_save_timeline_if_needed (timeline, structure, error);
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done:
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if (source)
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gst_object_unref (source);
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g_free (element_name);
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gst_clear_object (&source);
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gst_clear_object (&element);
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g_free (property_name);
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return ret;
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@ -771,8 +836,8 @@ _ges_set_child_property_from_struct (GESTimeline * timeline,
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const GValue *value;
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GValue prop_value = G_VALUE_INIT;
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gboolean prop_value_set = FALSE;
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gchar *property_name;
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GESTimelineElement *element;
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const gchar *property_name, *element_name;
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gchar *serialized;
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gboolean res;
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@ -784,54 +849,12 @@ _ges_set_child_property_from_struct (GESTimeline * timeline,
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if (!_check_fields (structure, fields_error, error))
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return FALSE;
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element_name = gst_structure_get_string (structure, "element-name");
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if (element_name == NULL)
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element = g_object_get_qdata (G_OBJECT (timeline), LAST_CHILD_QDATA);
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else
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element = ges_timeline_get_element (timeline, element_name);
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GET_AND_CHECK ("property", G_TYPE_STRING, &property_name, err);
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property_name = gst_structure_get_string (structure, "property");
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if (property_name == NULL) {
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const gchar *name = gst_structure_get_name (structure);
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if (g_str_has_prefix (name, "set-"))
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property_name = &name[4];
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else {
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gchar *struct_str = gst_structure_to_string (structure);
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*error =
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g_error_new (GES_ERROR, 0, "Could not find any property name in %s",
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struct_str);
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g_free (struct_str);
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return FALSE;
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}
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}
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if (element) {
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if (!ges_track_element_lookup_child (GES_TRACK_ELEMENT (element),
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property_name, NULL, NULL))
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element = NULL;
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}
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if (!element) {
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element = g_object_get_qdata (G_OBJECT (timeline), LAST_CONTAINER_QDATA);
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if (element == NULL) {
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*error =
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g_error_new (GES_ERROR, 0,
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"Could not find anywhere to set property: %s", property_name);
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return FALSE;
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}
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}
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if (!GES_IS_TIMELINE_ELEMENT (element)) {
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*error =
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g_error_new (GES_ERROR, 0, "Could not find child %s", element_name);
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return FALSE;
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}
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if (!(element =
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find_element_for_property (timeline, structure, &property_name, FALSE,
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error)))
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goto err;
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value = gst_structure_get_value (structure, "value");
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@ -888,7 +911,12 @@ _ges_set_child_property_from_struct (GESTimeline * timeline,
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return FALSE;
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}
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g_free (property_name);
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return _ges_save_timeline_if_needed (timeline, structure, error);
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err:
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g_free (property_name);
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return FALSE;
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}
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#undef GET_AND_CHECK
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