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blender-archive/source/blender/sequencer/SEQ_iterator.h

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Cleanup: Split SEQ_sequencer.h file
2020-12-19 06:44:57 +01:00
/*
* 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.
*
* The Original Code is Copyright (C) 2004 Blender Foundation.
* All rights reserved.
*/
#pragma once
/** \file
* \ingroup sequencer
*/
#ifdef __cplusplus
extern "C" {
#endif
VSE: New iterator design This iterator design provides means to create simple and flexible API to query and work with collection of strips. It should be used in cases when conditions require multiple stages of recursive iteration of all strips or similar complex scenarios. Quick API overview: Basic queries are standalone functions that return SeqCollection Use SEQ_collection_create() and SEQ_collection_free() to construct such query functions. Use these functions to get strips of known conditions, like selected strips, movie strips, muted strips and so on. Use SEQ_reference_query() when querying strips with relation to some reference strip. For example to get its effects, strips that have same type or use same input file and so on. These aren't standalone functions because often you need to query strips relative to each strip in collection. Use SEQ_collection_expand() to query strips relative to each strip in collection. These will be merged to original collection. Use SEQ_collection_merge() to merge 2 collections To iterate collection elements use macro SEQ_ITERATOR_FOREACH() This API is quite specific, but I think it is best suited for tasks that are usualy solved in sequencer codebase. Old sequencer iterator has been completely removed. SEQ_ALL_BEGIN and SEQ_ALL_END macros re-use new iterator design. As initial use for this iterator select_grouped_effect_link() function has been rewritten. It was not only broken, but also it used DNA fields to aid iterating strips. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10337
2021-05-07 10:25:13 +02:00
#include "BLI_ghash.h"
Cleanup: Split SEQ_sequencer.h file
2020-12-19 06:44:57 +01:00
struct Editing;
VSE: New iterator design This iterator design provides means to create simple and flexible API to query and work with collection of strips. It should be used in cases when conditions require multiple stages of recursive iteration of all strips or similar complex scenarios. Quick API overview: Basic queries are standalone functions that return SeqCollection Use SEQ_collection_create() and SEQ_collection_free() to construct such query functions. Use these functions to get strips of known conditions, like selected strips, movie strips, muted strips and so on. Use SEQ_reference_query() when querying strips with relation to some reference strip. For example to get its effects, strips that have same type or use same input file and so on. These aren't standalone functions because often you need to query strips relative to each strip in collection. Use SEQ_collection_expand() to query strips relative to each strip in collection. These will be merged to original collection. Use SEQ_collection_merge() to merge 2 collections To iterate collection elements use macro SEQ_ITERATOR_FOREACH() This API is quite specific, but I think it is best suited for tasks that are usualy solved in sequencer codebase. Old sequencer iterator has been completely removed. SEQ_ALL_BEGIN and SEQ_ALL_END macros re-use new iterator design. As initial use for this iterator select_grouped_effect_link() function has been rewritten. It was not only broken, but also it used DNA fields to aid iterating strips. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10337
2021-05-07 10:25:13 +02:00
struct GSet;
struct GSetIterator;
Cleanup: sort struct declarations
2021-07-16 11:48:54 +10:00
struct Sequence;
Cleanup: Split SEQ_sequencer.h file
2020-12-19 06:44:57 +01:00
Fix shadowing in sequencer iterator The __LINE__ was not properly expanded.
2021-08-27 14:44:12 +02:00
/* Utility macro to construct an unique (within a file) variable name for iterator macro.
* Use indirect macro evaluation to ensure the `__LINE__` is expanded (rather than being
* treated as a name token),
*
* The `__LINE__` is defined at the invocation of the `SEQ_ITERATOR_FOREACH` and is not changed
* afterwards. This makes it safe to expand it several times in the `SEQ_ITERATOR_FOREACH`.
*
Cleanup: spelling in comments
2021-09-01 21:41:23 +10:00
* This allows to have nested `foreach` loops.
Fix shadowing in sequencer iterator The __LINE__ was not properly expanded.
2021-08-27 14:44:12 +02:00
*
* NOTE: Putting nested loop to a wrapper macro is not supported. */
#define _SEQ_ITERATOR_NAME_JOIN(x, y) x##_##y
#define _SEQ_ITERATOR_NAME_EVALUATE(x, y) _SEQ_ITERATOR_NAME_JOIN(x, y)
#define _SEQ_ITERATOR_NAME(prefix) _SEQ_ITERATOR_NAME_EVALUATE(prefix, __LINE__)
VSE: Transform overwrite mode Add mode to overwrite strips on overlap instead of resolving overlap. When overlap is created, 3 things can happen: - On partial overlap, handles of overlapped strip are moved - On complete overlap with smaller strip, overlapped strip is split - On complete overlap with larger strip, overlapped strip is removed This mode can be enabled in header. Reviewed By: fsiddi, mano-wii Differential Revision: https://developer.blender.org/D11805
2021-08-27 12:59:46 +02:00
Fix shadowing in sequencer iterator The __LINE__ was not properly expanded.
2021-08-27 14:44:12 +02:00
#define SEQ_ITERATOR_FOREACH(var, collection) \
for (SeqIterator _SEQ_ITERATOR_NAME(iter) = {{{NULL}}}; \
SEQ_iterator_ensure(collection, &_SEQ_ITERATOR_NAME(iter), &var) && var != NULL; \
var = SEQ_iterator_yield(&_SEQ_ITERATOR_NAME(iter)))
Cleanup: Split SEQ_sequencer.h file
2020-12-19 06:44:57 +01:00
VSE: New iterator design This iterator design provides means to create simple and flexible API to query and work with collection of strips. It should be used in cases when conditions require multiple stages of recursive iteration of all strips or similar complex scenarios. Quick API overview: Basic queries are standalone functions that return SeqCollection Use SEQ_collection_create() and SEQ_collection_free() to construct such query functions. Use these functions to get strips of known conditions, like selected strips, movie strips, muted strips and so on. Use SEQ_reference_query() when querying strips with relation to some reference strip. For example to get its effects, strips that have same type or use same input file and so on. These aren't standalone functions because often you need to query strips relative to each strip in collection. Use SEQ_collection_expand() to query strips relative to each strip in collection. These will be merged to original collection. Use SEQ_collection_merge() to merge 2 collections To iterate collection elements use macro SEQ_ITERATOR_FOREACH() This API is quite specific, but I think it is best suited for tasks that are usualy solved in sequencer codebase. Old sequencer iterator has been completely removed. SEQ_ALL_BEGIN and SEQ_ALL_END macros re-use new iterator design. As initial use for this iterator select_grouped_effect_link() function has been rewritten. It was not only broken, but also it used DNA fields to aid iterating strips. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10337
2021-05-07 10:25:13 +02:00
typedef struct SeqCollection {
struct GSet *set;
} SeqCollection;
typedef struct SeqIterator {
GSetIterator gsi;
SeqCollection *collection;
bool iterator_initialized;
} SeqIterator;
bool SEQ_iterator_ensure(SeqCollection *collection,
SeqIterator *iterator,
struct Sequence **r_seq);
struct Sequence *SEQ_iterator_yield(SeqIterator *iterator);
Cleanup and remove SEQ_ALL_BEGIN macro 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
2021-08-20 16:30:34 +02:00
/* Callback format for the for_each function below. */
typedef bool (*SeqForEachFunc)(struct Sequence *seq, void *user_data);
void SEQ_for_each_callback(struct ListBase *seqbase, SeqForEachFunc callback, void *user_data);
Fix memory leak in VSE transform code SeqCollection wasn't freed. It wasn't easy to find culprit so added argument to SEQ_collection_create() to pass function name. Reviewed By: sergey Differential Revision: https://developer.blender.org/D11746
2021-07-01 22:14:29 +02:00
SeqCollection *SEQ_collection_create(const char *name);
VSE: Fix snapping bugs Fix hold offset check causing missing snapping point when strip have only still frames. Fix effect strips of transformed strips causing snapping to prevoius strip positions. Reviewed By: mano-wii Differential Revision: https://developer.blender.org/D11948
2021-07-26 14:55:14 +02:00
SeqCollection *SEQ_collection_duplicate(SeqCollection *collection);
Cleanup: use const arguments for accessor functions
2021-06-30 16:37:14 +10:00
uint SEQ_collection_len(const SeqCollection *collection);
Fix T90646: VSE hangs when strips overlap When all strips are selected and overlap is caused, this causes VSE to hang in infinite loop, because such situation should never happen. To prevent infinite loop, ensure, that strip overlap is not tested against single overlapping strip itself. Prevent overlap that can not be handled because of issue described above by moving overlapping strip between channels. Reviewed By: campbellbarton Differential Revision: D12209
2021-08-24 00:46:34 +02:00
bool SEQ_collection_has_strip(const struct Sequence *seq, const SeqCollection *collection);
VSE: New iterator design This iterator design provides means to create simple and flexible API to query and work with collection of strips. It should be used in cases when conditions require multiple stages of recursive iteration of all strips or similar complex scenarios. Quick API overview: Basic queries are standalone functions that return SeqCollection Use SEQ_collection_create() and SEQ_collection_free() to construct such query functions. Use these functions to get strips of known conditions, like selected strips, movie strips, muted strips and so on. Use SEQ_reference_query() when querying strips with relation to some reference strip. For example to get its effects, strips that have same type or use same input file and so on. These aren't standalone functions because often you need to query strips relative to each strip in collection. Use SEQ_collection_expand() to query strips relative to each strip in collection. These will be merged to original collection. Use SEQ_collection_merge() to merge 2 collections To iterate collection elements use macro SEQ_ITERATOR_FOREACH() This API is quite specific, but I think it is best suited for tasks that are usualy solved in sequencer codebase. Old sequencer iterator has been completely removed. SEQ_ALL_BEGIN and SEQ_ALL_END macros re-use new iterator design. As initial use for this iterator select_grouped_effect_link() function has been rewritten. It was not only broken, but also it used DNA fields to aid iterating strips. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10337
2021-05-07 10:25:13 +02:00
bool SEQ_collection_append_strip(struct Sequence *seq, SeqCollection *data);
VSE: Fix rendering inconsistency Fix issue described in T87678, which was partially a bug and partially change in intended(at least as far as I can tell) behaior. Function `evaluate_seq_frame_gen` that was partially responsible for filtering strips in stack for rendering wasn't working correctly. Intended functionality seems to be removing all effect inputs from stack as it is unlikely that user would want these to be blended in. However there was logic to exclude effects placed into same input, which because of weak implementation caused, that any effect input, that is effect as well will be considered to be part of stack to be blended in. This bug was apparently used to produce effects like glow over original image. Even though this is originally unintended, I have kept this logic, but I have made it explicit. Another change is request made in T87678 to make it possible to keep effect inputs as part of stack when they are placed above the effect, which would imply that blending is intended. This change is again explicitly defined. Whole implementation has been refactored, so logic is consolidated and code should be as explicit as possible and more readable. `must_render_strip function` may be still quite hard to read, not sure if I can make it nicer. Last change is for remove gaps feature code - it used same rendering code, which may be reason why its logic was split in first place. Now it uses sequencer iterator, which will definitely be faster than original code, but I could have used `LISTBASE_FOREACH` in this case. Reviewed By: sergey Differential Revision: https://developer.blender.org/D11301
2021-05-19 22:59:33 +02:00
bool SEQ_collection_remove_strip(struct Sequence *seq, SeqCollection *data);
Cleanup: clang tidy readability-inconsistent-declaration-parameter-name
2021-05-07 15:57:35 +02:00
void SEQ_collection_free(SeqCollection *collection);
VSE: New iterator design This iterator design provides means to create simple and flexible API to query and work with collection of strips. It should be used in cases when conditions require multiple stages of recursive iteration of all strips or similar complex scenarios. Quick API overview: Basic queries are standalone functions that return SeqCollection Use SEQ_collection_create() and SEQ_collection_free() to construct such query functions. Use these functions to get strips of known conditions, like selected strips, movie strips, muted strips and so on. Use SEQ_reference_query() when querying strips with relation to some reference strip. For example to get its effects, strips that have same type or use same input file and so on. These aren't standalone functions because often you need to query strips relative to each strip in collection. Use SEQ_collection_expand() to query strips relative to each strip in collection. These will be merged to original collection. Use SEQ_collection_merge() to merge 2 collections To iterate collection elements use macro SEQ_ITERATOR_FOREACH() This API is quite specific, but I think it is best suited for tasks that are usualy solved in sequencer codebase. Old sequencer iterator has been completely removed. SEQ_ALL_BEGIN and SEQ_ALL_END macros re-use new iterator design. As initial use for this iterator select_grouped_effect_link() function has been rewritten. It was not only broken, but also it used DNA fields to aid iterating strips. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10337
2021-05-07 10:25:13 +02:00
void SEQ_collection_merge(SeqCollection *collection_dst, SeqCollection *collection_src);
VSE: Fix snapping bugs Fix hold offset check causing missing snapping point when strip have only still frames. Fix effect strips of transformed strips causing snapping to prevoius strip positions. Reviewed By: mano-wii Differential Revision: https://developer.blender.org/D11948
2021-07-26 14:55:14 +02:00
void SEQ_collection_exclude(SeqCollection *collection, SeqCollection *exclude_elements);
VSE: New iterator design This iterator design provides means to create simple and flexible API to query and work with collection of strips. It should be used in cases when conditions require multiple stages of recursive iteration of all strips or similar complex scenarios. Quick API overview: Basic queries are standalone functions that return SeqCollection Use SEQ_collection_create() and SEQ_collection_free() to construct such query functions. Use these functions to get strips of known conditions, like selected strips, movie strips, muted strips and so on. Use SEQ_reference_query() when querying strips with relation to some reference strip. For example to get its effects, strips that have same type or use same input file and so on. These aren't standalone functions because often you need to query strips relative to each strip in collection. Use SEQ_collection_expand() to query strips relative to each strip in collection. These will be merged to original collection. Use SEQ_collection_merge() to merge 2 collections To iterate collection elements use macro SEQ_ITERATOR_FOREACH() This API is quite specific, but I think it is best suited for tasks that are usualy solved in sequencer codebase. Old sequencer iterator has been completely removed. SEQ_ALL_BEGIN and SEQ_ALL_END macros re-use new iterator design. As initial use for this iterator select_grouped_effect_link() function has been rewritten. It was not only broken, but also it used DNA fields to aid iterating strips. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10337
2021-05-07 10:25:13 +02:00
void SEQ_collection_expand(struct ListBase *seqbase,
SeqCollection *collection,
void query_func(struct Sequence *seq_reference,
struct ListBase *seqbase,
SeqCollection *collection));
SeqCollection *SEQ_query_by_reference(struct Sequence *seq_reference,
struct ListBase *seqbase,
void seq_query_func(struct Sequence *seq_reference,
struct ListBase *seqbase,
SeqCollection *collection));
SeqCollection *SEQ_query_selected_strips(struct ListBase *seqbase);
VSE: Transform overwrite mode Add mode to overwrite strips on overlap instead of resolving overlap. When overlap is created, 3 things can happen: - On partial overlap, handles of overlapped strip are moved - On complete overlap with smaller strip, overlapped strip is split - On complete overlap with larger strip, overlapped strip is removed This mode can be enabled in header. Reviewed By: fsiddi, mano-wii Differential Revision: https://developer.blender.org/D11805
2021-08-27 12:59:46 +02:00
SeqCollection *SEQ_query_unselected_strips(struct ListBase *seqbase);
Cleanup and remove SEQ_ALL_BEGIN macro 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
2021-08-20 16:30:34 +02:00
SeqCollection *SEQ_query_all_strips(struct ListBase *seqbase);
SeqCollection *SEQ_query_all_strips_recursive(struct ListBase *seqbase);
VSE: Move whole strip chain to meta Python API function Sequence.move_to_meta() did delete effect chain when strip with effects was moved. Use iterator API to query effect strips and move whole chain to meta. Reviewed By: sergey Differential Revision: https://developer.blender.org/D11206
2021-05-18 23:28:00 +02:00
void SEQ_query_strip_effect_chain(struct Sequence *seq_reference,
struct ListBase *seqbase,
SeqCollection *collection);
Cleanup: Split SEQ_sequencer.h file
2020-12-19 06:44:57 +01:00
#ifdef __cplusplus
}
#endif
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