Cleanup: move Alembic, AVI, Collada, and USD to `source/blender/io`

This moves the `alembic`, `avi`, `collada`, and `usd` modules into a common
`io` directory.

This also cleans up some `#include "../../{somedir}/{somefile}.h"` by
adding `../../io/{somedir}` to `CMakeLists.txt` and then just using
`#include "{somefile}.h"`.

No functional changes.

1 files changed, 141 insertions, 0 deletions

diff --git a/source/blender/io/alembic/ABC_alembic.h b/source/blender/io/alembic/ABC_alembic.h
new file mode 100644
index 00000000000..878dbfc2a53
--- /dev/null
+++ b/source/blender/io/alembic/ABC_alembic.h
@@ -0,0 +1,141 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup balembic
+ */
+
+#ifndef __ABC_ALEMBIC_H__
+#define __ABC_ALEMBIC_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct CacheReader;
+struct ListBase;
+struct Main;
+struct Mesh;
+struct Object;
+struct Scene;
+struct bContext;
+
+typedef struct AbcArchiveHandle AbcArchiveHandle;
+
+enum {
+  ABC_ARCHIVE_OGAWA = 0,
+  ABC_ARCHIVE_HDF5 = 1,
+};
+
+int ABC_get_version(void);
+
+struct AlembicExportParams {
+  double frame_start;
+  double frame_end;
+
+  unsigned int frame_samples_xform;
+  unsigned int frame_samples_shape;
+
+  double shutter_open;
+  double shutter_close;
+
+  bool selected_only;
+  bool uvs;
+  bool normals;
+  bool vcolors;
+  bool apply_subdiv;
+  bool curves_as_mesh;
+  bool flatten_hierarchy;
+  bool visible_objects_only;
+  bool renderable_only;
+  bool face_sets;
+  bool use_subdiv_schema;
+  bool packuv;
+  bool triangulate;
+  bool export_hair;
+  bool export_particles;
+
+  unsigned int compression_type : 1;
+
+  /* See MOD_TRIANGULATE_NGON_xxx and MOD_TRIANGULATE_QUAD_xxx
+   * in DNA_modifier_types.h */
+  int quad_method;
+  int ngon_method;
+
+  float global_scale;
+};
+
+/* The ABC_export and ABC_import functions both take a as_background_job
+ * parameter, and return a boolean.
+ *
+ * When as_background_job=true, returns false immediately after scheduling
+ * a background job.
+ *
+ * When as_background_job=false, performs the export synchronously, and returns
+ * true when the export was ok, and false if there were any errors.
+ */
+
+bool ABC_export(struct Scene *scene,
+                struct bContext *C,
+                const char *filepath,
+                const struct AlembicExportParams *params,
+                bool as_background_job);
+
+bool ABC_import(struct bContext *C,
+                const char *filepath,
+                float scale,
+                bool is_sequence,
+                bool set_frame_range,
+                int sequence_len,
+                int offset,
+                bool validate_meshes,
+                bool as_background_job);
+
+AbcArchiveHandle *ABC_create_handle(struct Main *bmain,
+                                    const char *filename,
+                                    struct ListBase *object_paths);
+
+void ABC_free_handle(AbcArchiveHandle *handle);
+
+void ABC_get_transform(struct CacheReader *reader, float r_mat[4][4], float time, float scale);
+
+/* Either modifies current_mesh in-place or constructs a new mesh. */
+struct Mesh *ABC_read_mesh(struct CacheReader *reader,
+                           struct Object *ob,
+                           struct Mesh *current_mesh,
+                           const float time,
+                           const char **err_str,
+                           int flags);
+
+bool ABC_mesh_topology_changed(struct CacheReader *reader,
+                               struct Object *ob,
+                               struct Mesh *existing_mesh,
+                               const float time,
+                               const char **err_str);
+
+void CacheReader_incref(struct CacheReader *reader);
+void CacheReader_free(struct CacheReader *reader);
+
+struct CacheReader *CacheReader_open_alembic_object(struct AbcArchiveHandle *handle,
+                                                    struct CacheReader *reader,
+                                                    struct Object *object,
+                                                    const char *object_path);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ABC_ALEMBIC_H__ */