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2022-06-02VSE: Make time operations self-containedRichard Antalik
This patch makes it possible to manipulate strips without need to use update functions to recalculate effect and meta strips. Prior to this change function `SEQ_time_update_sequence` had to be used to update mainly effects and meta strips. This was implemented in a way that relied on sorted list of strips, which can't always be done and in rare cases this approach failed. In case of meta strips, `seqbase` had to be passed and compared with "active" one to determine whether meta strip should be updated or not. This is especially weak system that is prone to bugs when functions are used by python API functions. Finally, other strip types had startdisp` and `enddisp` fields updated by this function and a lot of code relied on these fields even if strip start, length and offsets are available. This is completely unnecessary. Implemented changes: All effects and meta strips are updated when strip handles are moved or strip is translated, without need to call any update function. Function `SEQ_time_update_sequence` has been split to `SEQ_time_update_meta_strip_range` and `seq_time_update_effects_strip_range`. These functions should be only used within sequencer module code. Meta update is used for versioning, which is only reason for it not being declared internally. Sequence fields `startdisp` and `enddisp` are now only used for effects to store strip start and end points. These fields should be used only internally within sequencer module code. Use function `SEQ_time_*_handle_frame_get` to get strip start and end points. To update effects and meta strips with reasonable performance, cache for "parent" meta strip and attached effects is added to `SequenceLookup` cache, so it shares invalidation mechanisms. All caches are populated during single iteration. There should be no functional changes. Differential Revision: https://developer.blender.org/D14990
2022-05-17Fix T98021: Crash when using scene strip as sequencer inputRichard Antalik
Issue was caused by treating such strip as meta and using `seq->channels` directly, which is not valid for scene strips. Pointer to channels is now provided by function `SEQ_get_seqbase_from_sequence`.
2022-02-11File headers: SPDX License migrationCampbell Barton
Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
2022-01-24Cleanup: sort struct forward declarationsCampbell Barton
2022-01-07Cleanup: remove redundant const qualifiers for POD typesCampbell Barton
MSVC used to warn about const mismatch for arguments passed by value. Remove these as newer versions of MSVC no longer show this warning.
2021-12-08Cleanup: move public doc-strings into headers for 'sequencer'Campbell Barton
Ref T92709
2021-09-21VSE strip thumbnailsAditya Y Jeppu
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
2021-08-25Cleanup and remove SEQ_ALL_BEGIN macroSebastian Parborg
We now use a for_each function with callback to iterate through all sequences in the scene. This has the benefit that we now only loop over the sequences in the scene once. Before we would loop over them twice and allocate memory to store temporary data. The allocation of temporary data lead to unintentional memory leaks if the code used returns to exit out of the iteration loop. The new for_each callback method doesn't allocate any temporary data and only iterates though all sequences once. Reviewed By: Richard Antalik, Bastien Montagne Differential Revision: http://developer.blender.org/D12278
2021-06-30Cleanup: use const arguments for accessor functionsCampbell Barton
2021-06-16VSE: Improve animation evaluation performanceRichard Antalik
Use lookup string callback function for `sequences_all` RNA property `rna_SequenceEditor_sequences_all_lookup_string` using a GHash for faster lookups. When names are changed or strips are added/removed the lookup is tagged invalid. The next time the lookup is used it will rebuild it. Reviewed By: sergey, jbakker Differential Revision: https://developer.blender.org/D11544
2021-06-02Cleanup: Strip duplication codeRichard Antalik
Remove unused flag `SEQ_DUPE_ANIM` and code used by this flag. Remove flag `SEQ_DUPE_CONTEXT` and refactor code, to split operator logic from duplication code. Reduce indentation level in for loop. Reviewed By: sergey Differential Revision: https://developer.blender.org/D11318
2021-05-19VSE: Refactor sorting functionsRichard Antalik
Recently `SEQ_sort()` function was split so functionality is provided on per-seqbase basis. After discussion about this split, it turned out, that per-seqbase operation is only that should be provided, because RNA API functions need to be able to access arbitrary seqbase Remove recently introduced function `seq_sort_seqbase` and change `SEQ_sort` function to operate on seqbase. Reviewed By: sergey Differential Revision: https://developer.blender.org/D11297
2021-05-19VSE: Better handling of effect strip splittingRichard Antalik
Splitting of effect strip alone wasn't handled properly. Previously this resulted in duplicating effect strip, and it was broken at least from 2.79. Change in rB8ec6b34b8eb2 was intended to allow splitting strips individually, so it can be used as RNA API function but also so it requires as little glue logic as possible. This is fixed by splitting all dependent strips at once in 2 separate ListBases for left and right strips. Strips can be finally moved into original `ListBase`. With this fix it is still possible to split strips individually with little glue logic. RNA API function could return list of split strips as well, currently at least one strip in chain will be provided so chain can be reconstructed on python side. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10209
2021-05-06Cleanup: VSE: move functions from incorrect fileRichard Antalik
`SEQ_recursive_apply` and `SEQ_seqbase_recursive_apply` were incorrectly refactored into `iterator.c` file, but they aren't part and don't use sequencer iterator. Functions are moved to `utils.c` file.
2021-01-04Cleanup: sort structsCampbell Barton
2020-12-19Cleanup: Split SEQ_sequencer.h fileRichard Antalik