Refactor ID copying (and to some extent, ID freeing).

This will allow much finer controll over how we copy data-blocks, from
full copy in Main database, to "lighter" ones (out of Main, inside an
already allocated datablock, etc.).

This commit also transfers a llot of what was previously handled by
per-ID-type custom code to generic ID handling code in BKE_library.
Hopefully will avoid in future inconsistencies and missing bits we had
all over the codebase in the past.

It also adds missing copying handling for a few types, most notably
Scene (which where using a fully customized handling previously).

Note that the type of allocation used during copying (regular in Main,
allocated but outside of Main, or not allocated by ID handling code at
all) is stored in ID's, which allows to handle them correctly when
freeing. This needs to be taken care of with caution when doing 'weird'
unusual things with ID copying and/or allocation!

As a final note, while rather noisy, this commit will hopefully not
break too much existing branches, old 'API' has been kept for the main
part, as a wrapper around new code. Cleaning it up will happen later.

Design task : T51804
Phab Diff: D2714

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/blenkernel/BKE_action.h b/source/blender/blenkernel/BKE_action.h
index 5db0c3c9130..28be2b04c71 100644
--- a/source/blender/blenkernel/BKE_action.h
+++ b/source/blender/blenkernel/BKE_action.h
@@ -57,8 +57,9 @@ extern "C" {
 /* Allocate a new bAction with the given name */
 struct bAction *add_empty_action(struct Main *bmain, const char name[]);
 
-/* Allocate a copy of the given Action and all its data */	
-struct bAction *BKE_action_copy(struct Main *bmain, const struct bAction *src);
+void BKE_action_copy_data(struct Main *bmain, struct bAction *act_dst, const struct bAction *act_src, const int flag);
+/* Allocate a copy of the given Action and all its data */
+struct bAction *BKE_action_copy(struct Main *bmain, const struct bAction *act_src);
 
 /* Deallocate all of the Action's data, but not the Action itself */
 void BKE_action_free(struct bAction *act);
@@ -150,6 +151,7 @@ void                 BKE_pose_free_data_ex(struct bPose *pose, bool do_id_user);
 void                 BKE_pose_free_data(struct bPose *pose);
 void                 BKE_pose_free(struct bPose *pose);
 void                 BKE_pose_free_ex(struct bPose *pose, bool do_id_user);
+void                 BKE_pose_copy_data_ex(struct bPose **dst, const struct bPose *src, const int flag, const bool copy_constraints);
 void                 BKE_pose_copy_data(struct bPose **dst, const struct bPose *src, const bool copy_constraints);
 void                 BKE_pose_channel_copy_data(struct bPoseChannel *pchan, const struct bPoseChannel *pchan_from);
 struct bPoseChannel *BKE_pose_channel_find_name(const struct bPose *pose, const char *name);