From bed634c4f96cac7b1afaccc1ff646fc22f3efb29 Mon Sep 17 00:00:00 2001
From: Jacques Lucke <jacques@blender.org>
Date: Fri, 21 Aug 2020 15:42:26 +0200
Subject: Refactor: move nla code from blenloader to blenkernel

---
 source/blender/blenkernel/intern/nla.c | 102 +++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)

(limited to 'source/blender/blenkernel/intern')

diff --git a/source/blender/blenkernel/intern/nla.c b/source/blender/blenkernel/intern/nla.c
index e5527ed987a..9f5ca1d9b0e 100644
--- a/source/blender/blenkernel/intern/nla.c
+++ b/source/blender/blenkernel/intern/nla.c
@@ -54,6 +54,8 @@
 #include "BKE_nla.h"
 #include "BKE_sound.h"
 
+#include "BLO_read_write.h"
+
 #include "RNA_access.h"
 #include "nla_private.h"
 
@@ -2190,3 +2192,103 @@ void BKE_nla_tweakmode_exit(AnimData *adt)
   adt->actstrip = NULL;
   adt->flag &= ~ADT_NLA_EDIT_ON;
 }
+
+static void blend_write_nla_strips(BlendWriter *writer, ListBase *strips)
+{
+  BLO_write_struct_list(writer, NlaStrip, strips);
+  LISTBASE_FOREACH (NlaStrip *, strip, strips) {
+    /* write the strip's F-Curves and modifiers */
+    BKE_fcurve_blend_write(writer, &strip->fcurves);
+    BKE_fmodifiers_blend_write(writer, &strip->modifiers);
+
+    /* write the strip's children */
+    blend_write_nla_strips(writer, &strip->strips);
+  }
+}
+
+static void blend_data_read_nla_strips(BlendDataReader *reader, ListBase *strips)
+{
+  LISTBASE_FOREACH (NlaStrip *, strip, strips) {
+    /* strip's child strips */
+    BLO_read_list(reader, &strip->strips);
+    blend_data_read_nla_strips(reader, &strip->strips);
+
+    /* strip's F-Curves */
+    BLO_read_list(reader, &strip->fcurves);
+    BKE_fcurve_blend_data_read(reader, &strip->fcurves);
+
+    /* strip's F-Modifiers */
+    BLO_read_list(reader, &strip->modifiers);
+    BKE_fmodifiers_blend_data_read(reader, &strip->modifiers, NULL);
+  }
+}
+
+static void blend_lib_read_nla_strips(BlendLibReader *reader, ID *id, ListBase *strips)
+{
+  LISTBASE_FOREACH (NlaStrip *, strip, strips) {
+    /* check strip's children */
+    blend_lib_read_nla_strips(reader, id, &strip->strips);
+
+    /* check strip's F-Curves */
+    BKE_fcurve_blend_lib_read(reader, id, &strip->fcurves);
+
+    /* reassign the counted-reference to action */
+    BLO_read_id_address(reader, id->lib, &strip->act);
+  }
+}
+
+static void blend_expand_nla_strips(BlendExpander *expander, ListBase *strips)
+{
+  LISTBASE_FOREACH (NlaStrip *, strip, strips) {
+    /* check child strips */
+    blend_expand_nla_strips(expander, &strip->strips);
+
+    /* check F-Curves */
+    BKE_fcurve_blend_expand(expander, &strip->fcurves);
+
+    /* check F-Modifiers */
+    BKE_fmodifiers_blend_expand(expander, &strip->modifiers);
+
+    /* relink referenced action */
+    BLO_expand(expander, strip->act);
+  }
+}
+
+void BKE_nla_blend_write(BlendWriter *writer, ListBase *tracks)
+{
+  /* write all the tracks */
+  LISTBASE_FOREACH (NlaTrack *, nlt, tracks) {
+    /* write the track first */
+    BLO_write_struct(writer, NlaTrack, nlt);
+
+    /* write the track's strips */
+    blend_write_nla_strips(writer, &nlt->strips);
+  }
+}
+
+void BKE_nla_blend_data_read(BlendDataReader *reader, ListBase *tracks)
+{
+  LISTBASE_FOREACH (NlaTrack *, nlt, tracks) {
+    /* relink list of strips */
+    BLO_read_list(reader, &nlt->strips);
+
+    /* relink strip data */
+    blend_data_read_nla_strips(reader, &nlt->strips);
+  }
+}
+
+void BKE_nla_blend_lib_read(BlendLibReader *reader, ID *id, ListBase *tracks)
+{
+  /* we only care about the NLA strips inside the tracks */
+  LISTBASE_FOREACH (NlaTrack *, nlt, tracks) {
+    blend_lib_read_nla_strips(reader, id, &nlt->strips);
+  }
+}
+
+void BKE_nla_blend_expand(struct BlendExpander *expander, struct ListBase *tracks)
+{
+  /* nla-data - referenced actions */
+  LISTBASE_FOREACH (NlaTrack *, nlt, tracks) {
+    blend_expand_nla_strips(expander, &nlt->strips);
+  }
+}
-- 
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