Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/blender/sequencer/SEQ_proxy.hh

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+/* SPDX-FileCopyrightText: 2004 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+#pragma once
+
+/** \file
+ * \ingroup sequencer
+ */
+
+#include "DNA_space_enums.h"
+
+#include "BLI_function_ref.hh"
+#include "BLI_set.hh"
+#include "BLI_vector.hh"
+
+#include "IMB_imbuf_enums.h"
+
+namespace blender {
+
+struct Main;
+struct Scene;
+struct Strip;
+struct bContext;
+struct wmJob;
+struct wmJobWorkerStatus;
+
+namespace seq {
+
+struct ProxyBuildContext;
+struct RenderData;
+
+/*
+ * Initializes proxy (re)build for the given input strip.
+ * The actual proxy builders, if needed, are added to the
+ * `r_queue` output vector (there can be more than one
+ * for multi-view videos/images).
+ */
+bool proxy_build_start(Main *bmain,
+                       Scene *scene,
+                       Strip *strip,
+                       Set<std::string> *processed_paths,
+                       bool build_only_on_bad_performance,
+                       Vector<ProxyBuildContext *> &r_queue);
+
+/* Processes a proxy (re)build request in given `context`. */
+void proxy_build_process(ProxyBuildContext *context,
+                         const bool *should_stop,
+                         bool *has_updated,
+                         FunctionRef<void(float progress)> set_progress_fn);
+
+/* Cleans up and deallocates the proxy build context. */
+void proxy_build_finish(ProxyBuildContext *context);
+
+void proxy_set(Strip *strip, bool value);
+bool can_use_proxy(const RenderData *context, const Strip *strip, IMB_Proxy_Size psize);
+IMB_Proxy_Size rendersize_to_proxysize(eSpaceSeq_Proxy_RenderSize render_size);
+float rendersize_to_scale_factor(eSpaceSeq_Proxy_RenderSize render_size);
+
+struct ProxyJob {
+  Main *main = nullptr;
+  Scene *scene = nullptr;
+  Vector<ProxyBuildContext *> queue;
+  int stop = 0;
+};
+
+wmJob *ED_seq_proxy_wm_job_get(const bContext *C);
+ProxyJob *ED_seq_proxy_job_get(const bContext *C, wmJob *wm_job);
+
+}  // namespace seq
+}  // namespace blender