VSE: Improve animation evaluation performance

Use lookup string callback function for `sequences_all` RNA property
`rna_SequenceEditor_sequences_all_lookup_string` using a GHash for faster lookups.

When names are changed or strips are added/removed the lookup is tagged invalid.
The next time the lookup is used it will rebuild it.

Reviewed By: sergey, jbakker

Differential Revision: https://developer.blender.org/D11544

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/sequencer/SEQ_sequencer.h b/source/blender/sequencer/SEQ_sequencer.h
index ad0815892f7..fd4181a5a54 100644
--- a/source/blender/sequencer/SEQ_sequencer.h
+++ b/source/blender/sequencer/SEQ_sequencer.h
@@ -33,6 +33,7 @@ struct Editing;
 struct Scene;
 struct Sequence;
 struct SequencerToolSettings;
+struct SequenceLookup;
 
 /* RNA enums, just to be more readable */
 enum {
@@ -79,6 +80,16 @@ void SEQ_sequence_base_dupli_recursive(const struct Scene *scene_src,
                                        int dupe_flag,
                                        const int flag);
 
+/* Defined in sequence_lookup.c */
+
+typedef enum eSequenceLookupTag {
+  SEQ_LOOKUP_TAG_INVALID = (1 << 0),
+} eSequenceLookupTag;
+
+struct Sequence *SEQ_sequence_lookup_by_name(const struct Scene *scene, const char *key);
+void SEQ_sequence_lookup_free(const struct Scene *scene);
+void SEQ_sequence_lookup_tag(const struct Scene *scene, eSequenceLookupTag tag);
+
 #ifdef __cplusplus
 }
 #endif