From 997b5fe45dab8bd0e2976c8b673e56266134fc80 Mon Sep 17 00:00:00 2001 From: Aditya Y Jeppu Date: Tue, 21 Sep 2021 10:38:15 +0200 Subject: VSE strip thumbnails 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 --- source/blender/sequencer/SEQ_utils.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'source/blender/sequencer/SEQ_utils.h') diff --git a/source/blender/sequencer/SEQ_utils.h b/source/blender/sequencer/SEQ_utils.h index 09de7bc67e9..d30a1b2d7ae 100644 --- a/source/blender/sequencer/SEQ_utils.h +++ b/source/blender/sequencer/SEQ_utils.h @@ -34,6 +34,7 @@ struct Mask; struct Scene; struct Sequence; struct StripElem; +struct SeqRenderData; void SEQ_sort(struct ListBase *seqbase); void SEQ_sequence_base_unique_name_recursive(struct Scene *scene, @@ -57,7 +58,6 @@ void SEQ_set_scale_to_fit(const struct Sequence *seq, const int preview_height, const eSeqImageFitMethod fit_method); void SEQ_ensure_unique_name(struct Sequence *seq, struct Scene *scene); - #ifdef __cplusplus } #endif -- cgit v1.2.3