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, 169 insertions, 0 deletions

diff --git a/source/blender/io/collada/ImageExporter.cpp b/source/blender/io/collada/ImageExporter.cpp
new file mode 100644
index 00000000000..6e31e17fb26
--- /dev/null
+++ b/source/blender/io/collada/ImageExporter.cpp
@@ -0,0 +1,169 @@
+/*
+ * 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 collada
+ */
+
+#include "COLLADABUURI.h"
+#include "COLLADASWImage.h"
+
+extern "C" {
+#include "DNA_texture_types.h"
+#include "DNA_image_types.h"
+#include "DNA_meshdata_types.h"
+
+#include "BKE_customdata.h"
+#include "BKE_global.h"
+#include "BKE_image.h"
+#include "BKE_main.h"
+#include "BKE_mesh.h"
+
+#include "BLI_fileops.h"
+#include "BLI_path_util.h"
+#include "BLI_string.h"
+
+#include "IMB_imbuf_types.h"
+}
+
+#include "ImageExporter.h"
+#include "MaterialExporter.h"
+
+ImagesExporter::ImagesExporter(COLLADASW::StreamWriter *sw,
+                               BCExportSettings &export_settings,
+                               KeyImageMap &key_image_map)
+    : COLLADASW::LibraryImages(sw), export_settings(export_settings), key_image_map(key_image_map)
+{
+  /* pass */
+}
+
+void ImagesExporter::export_UV_Image(Image *image, bool use_copies)
+{
+  std::string name(id_name(image));
+  std::string translated_name(translate_id(name));
+
+  ImBuf *imbuf = BKE_image_acquire_ibuf(image, NULL, NULL);
+  if (!imbuf) {
+    fprintf(stderr, "Collada export: image does not exist:\n%s\n", image->name);
+    return;
+  }
+
+  bool is_dirty = BKE_image_is_dirty(image);
+
+  ImageFormatData imageFormat;
+  BKE_imbuf_to_image_format(&imageFormat, imbuf);
+
+  short image_source = image->source;
+  bool is_generated = image_source == IMA_SRC_GENERATED;
+  bool is_packed = BKE_image_has_packedfile(image);
+
+  char export_path[FILE_MAX];
+  char source_path[FILE_MAX];
+  char export_dir[FILE_MAX];
+  char export_file[FILE_MAX];
+
+  /* Destination folder for exported assets */
+  BLI_split_dir_part(this->export_settings.get_filepath(), export_dir, sizeof(export_dir));
+
+  if (is_generated || is_dirty || use_copies || is_packed) {
+
+    /* make absolute destination path */
+
+    BLI_strncpy(export_file, name.c_str(), sizeof(export_file));
+    BKE_image_path_ensure_ext_from_imformat(export_file, &imageFormat);
+
+    BLI_join_dirfile(export_path, sizeof(export_path), export_dir, export_file);
+
+    /* make dest directory if it doesn't exist */
+    BLI_make_existing_file(export_path);
+  }
+
+  if (is_generated || is_dirty || is_packed) {
+
+    /* This image in its current state only exists in Blender memory.
+     * So we have to export it. The export will keep the image state intact,
+     * so the exported file will not be associated with the image. */
+
+    if (BKE_imbuf_write_as(imbuf, export_path, &imageFormat, true) == 0) {
+      fprintf(stderr, "Collada export: Cannot export image to:\n%s\n", export_path);
+      return;
+    }
+    BLI_strncpy(export_path, export_file, sizeof(export_path));
+  }
+  else {
+
+    /* make absolute source path */
+    BLI_strncpy(source_path, image->name, sizeof(source_path));
+    BLI_path_abs(source_path, ID_BLEND_PATH_FROM_GLOBAL(&image->id));
+    BLI_cleanup_path(NULL, source_path);
+
+    if (use_copies) {
+
+      /* This image is already located on the file system.
+       * But we want to create copies here.
+       * To move images into the same export directory.
+       * Note: If an image is already located in the export folder,
+       * then skip the copy (as it would result in a file copy error). */
+
+      if (BLI_path_cmp(source_path, export_path) != 0) {
+        if (BLI_copy(source_path, export_path) != 0) {
+          fprintf(stderr,
+                  "Collada export: Cannot copy image:\n source:%s\ndest :%s\n",
+                  source_path,
+                  export_path);
+          return;
+        }
+      }
+
+      BLI_strncpy(export_path, export_file, sizeof(export_path));
+    }
+    else {
+
+      /* Do not make any copies, but use the source path directly as reference
+       * to the original image */
+
+      BLI_strncpy(export_path, source_path, sizeof(export_path));
+    }
+  }
+
+  /* Set name also to mNameNC.
+   * This helps other viewers import files exported from Blender better. */
+  COLLADASW::Image img(COLLADABU::URI(COLLADABU::URI::nativePathToUri(export_path)),
+                       translated_name,
+                       translated_name);
+  img.add(mSW);
+  fprintf(stdout, "Collada export: Added image: %s\n", export_file);
+
+  BKE_image_release_ibuf(image, imbuf, NULL);
+}
+
+void ImagesExporter::exportImages(Scene *sce)
+{
+  bool use_texture_copies = this->export_settings.get_use_texture_copies();
+  openLibrary();
+
+  KeyImageMap::iterator iter;
+  for (iter = key_image_map.begin(); iter != key_image_map.end(); iter++) {
+
+    Image *image = iter->second;
+    std::string uid(id_name(image));
+    std::string key = translate_id(uid);
+
+    export_UV_Image(image, use_texture_copies);
+  }
+
+  closeLibrary();
+}