77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup imbuf
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*/
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include "BLI_linklist.h"
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#include "BLI_listbase.h" /* Needed due to import of BLO_readfile.h */
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#include "BLI_utildefines.h"
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#include "BLO_blend_defs.hh"
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#include "BLO_readfile.h"
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#include "BKE_idtype.h"
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#include "BKE_main.h"
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#include "BKE_preview_image.hh"
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#include "DNA_ID.h" /* For preview images... */
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#include "IMB_imbuf.h"
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#include "IMB_imbuf_types.h"
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#include "IMB_thumbs.h"
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#include "MEM_guardedalloc.h"
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/* NOTE: we should handle all previews for a same group at once, would avoid reopening
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* `.blend` file for each and every ID. However, this adds some complexity,
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* so keep it for later. */
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static ImBuf *imb_thumb_load_from_blend_id(const char *blen_path,
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const char *blen_group,
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const char *blen_id)
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{
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ImBuf *ima = nullptr;
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BlendFileReadReport bf_reports = {};
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bf_reports.reports = nullptr;
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BlendHandle *libfiledata = BLO_blendhandle_from_file(blen_path, &bf_reports);
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if (libfiledata == nullptr) {
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return nullptr;
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}
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int idcode = BKE_idtype_idcode_from_name(blen_group);
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PreviewImage *preview = BLO_blendhandle_get_preview_for_id(libfiledata, idcode, blen_id);
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BLO_blendhandle_close(libfiledata);
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if (preview) {
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ima = BKE_previewimg_to_imbuf(preview, ICON_SIZE_PREVIEW);
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BKE_previewimg_freefunc(preview);
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}
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return ima;
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}
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static ImBuf *imb_thumb_load_from_blendfile(const char *blen_path)
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{
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BlendThumbnail *data = BLO_thumbnail_from_file(blen_path);
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ImBuf *ima = BKE_main_thumbnail_to_imbuf(nullptr, data);
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if (data) {
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MEM_freeN(data);
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}
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return ima;
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}
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ImBuf *IMB_thumb_load_blend(const char *blen_path, const char *blen_group, const char *blen_id)
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{
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if (blen_group && blen_id) {
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return imb_thumb_load_from_blend_id(blen_path, blen_group, blen_id);
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}
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return imb_thumb_load_from_blendfile(blen_path);
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}
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