997b5fe45d
Draw thumbnails as strip overlay. This works for movie and image strips. To draw thumbnails, this overlay has to be enabled and strips must be tall enough. The thumbnails are loaded from source file using separate thread and stored in cache. Drawing code uses only images stored in cache, and if any is missing, background rendering job is started. If job can not render thumbnail, to prevent endless loop of creating job for missing image it sets `SEQ_FLAG_SKIP_THUMBNAILS` bit of `Sequence` flag. To prevent visual glitches during timeline panning and zooming, `View2D` flag `V2D_IS_NAVIGATING` is implemented. If bit is set, drawing code will look for set of evenly distributed thumbnails that should be guaranteed to exist and also set of previously displayed thumbnails. Due to volatile nature of cache these thumbnails can be missing anyway, in which case no new thumbnails will be drawn for particular strip. Cache capacity is limited to 5000 thumbnails and performs cleanup of non visible images when limit is reached. ref T89143 Reviewed By: ISS Differential Revision: https://developer.blender.org/D12266
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2004 Blender Foundation.
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* All rights reserved.
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*/
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#pragma once
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/** \file
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* \ingroup sequencer
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ImBuf;
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struct Main;
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struct Scene;
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struct SeqRenderData;
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struct Sequence;
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#ifdef __cplusplus
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}
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#endif
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struct ImBuf *seq_cache_get(const struct SeqRenderData *context,
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struct Sequence *seq,
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float timeline_frame,
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int type);
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void seq_cache_put(const struct SeqRenderData *context,
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struct Sequence *seq,
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float timeline_frame,
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int type,
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struct ImBuf *i);
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void seq_cache_thumbnail_put(const struct SeqRenderData *context,
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struct Sequence *seq,
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float timeline_frame,
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struct ImBuf *i,
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rctf *view_area);
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bool seq_cache_put_if_possible(const struct SeqRenderData *context,
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struct Sequence *seq,
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float timeline_frame,
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int type,
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struct ImBuf *nval);
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bool seq_cache_recycle_item(struct Scene *scene);
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void seq_cache_free_temp_cache(struct Scene *scene, short id, int timeline_frame);
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void seq_cache_destruct(struct Scene *scene);
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void seq_cache_cleanup_all(struct Main *bmain);
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void seq_cache_cleanup_sequence(struct Scene *scene,
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struct Sequence *seq,
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struct Sequence *seq_changed,
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int invalidate_types,
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bool force_seq_changed_range);
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void seq_cache_thumbnail_cleanup(Scene *scene, rctf *view_area);
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bool seq_cache_is_full(void);
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#ifdef __cplusplus
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}
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#endif
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