11a99fb2b1
Prefetching happens on a background thread by design, and so it was not loading any fonts and using the default monospace font. Address this by making all font usage within VSE use "unique" BLF font objects, and protecting concurrent access to them or their state within VSE itself: - SeqFontMap structure to hold a mutex, file path -> font ID map (for file based fonts), name -> font ID map (for datablock fonts). - seq_load_font_file, seq_load_font_mem, seq_unload_font that use the above instead of calling into BLF directly. - Text effect rendering part guards with a mutex, so that font render state and glyph cache does not get trashed. - SeqFontMap is global instead of some Scene-specific runtime data (e.g. scene->ed), because right now there's a hard max limit of total number of fonts (64), and if each copy of the VSE data would start to load their own unique fonts, that limit could get easily reached. - BLF font loading/unloading code is now thread safe. The rest of BLF drawing is still not! If at some point in the future BLF font usage becomes thread safe, and font drawing becomes "stateless", this whole machinery can be removed. Pull Request: https://projects.blender.org/blender/blender/pulls/130542
95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
/* SPDX-FileCopyrightText: 2004 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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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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#include "DNA_scene_types.h"
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struct bSound;
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struct ListBase;
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struct Mask;
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struct Scene;
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struct Sequence;
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struct StripElem;
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void SEQ_sequence_base_unique_name_recursive(Scene *scene, ListBase *seqbasep, Sequence *seq);
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const char *SEQ_sequence_give_name(const Sequence *seq);
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ListBase *SEQ_get_seqbase_from_sequence(Sequence *seq, ListBase **r_channels, int *r_offset);
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const Sequence *SEQ_get_topmost_sequence(const Scene *scene, int frame);
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/**
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* In cases where we don't know the sequence's listbase.
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*/
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ListBase *SEQ_get_seqbase_by_seq(const Scene *scene, Sequence *seq);
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/**
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* Only use as last resort when the StripElem is available but no the Sequence.
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* (needed for RNA)
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*/
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Sequence *SEQ_sequence_from_strip_elem(ListBase *seqbase, StripElem *se);
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Sequence *SEQ_get_sequence_by_name(ListBase *seqbase, const char *name, bool recursive);
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Mask *SEQ_active_mask_get(Scene *scene);
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void SEQ_alpha_mode_from_file_extension(Sequence *seq);
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/**
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* Check if an input referenced by this strip is valid (e.g. scene for a scene strip).
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* Note that this only checks data block references, for missing media referenced
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* by paths use #media_presence_is_missing.
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*/
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bool SEQ_sequence_has_valid_data(const Sequence *seq);
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void SEQ_set_scale_to_fit(const Sequence *seq,
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int image_width,
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int image_height,
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int preview_width,
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int preview_height,
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eSeqImageFitMethod fit_method);
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/**
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* Ensure, that provided Sequence has unique name. If animation data exists for this Sequence, it
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* will be duplicated and mapped onto new name
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*
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* \param seq: Sequence which name will be ensured to be unique
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* \param scene: Scene in which name must be unique
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*/
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void SEQ_ensure_unique_name(Sequence *seq, Scene *scene);
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void SEQ_fontmap_clear();
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namespace blender::seq {
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/**
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* Check whether a sequence strip has missing media.
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* Results of the query for this strip will be cached into #MediaPresence cache. The cache
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* will be created on demand.
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*
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* \param scene: Scene to query.
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* \param seq: Sequencer strip.
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* \return True if media file is missing.
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*/
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bool media_presence_is_missing(Scene *scene, const Sequence *seq);
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/**
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* Set or change the missing media cache value for a given strip.
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*/
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void media_presence_set_missing(Scene *scene, const Sequence *seq, bool missing);
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/**
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* Invalidate media presence cache for the given strip.
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*/
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void media_presence_invalidate_strip(Scene *scene, const Sequence *seq);
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/**
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* Invalidate media presence cache for the given sound.
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*/
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void media_presence_invalidate_sound(Scene *scene, const bSound *sound);
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/**
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* Free media presence cache, if it was created.
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*/
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void media_presence_free(Scene *scene);
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} // namespace blender::seq
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