Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/blender/imbuf/IMB_cache.hh

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+/* SPDX-FileCopyrightText: 2024 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+#pragma once
+
+/** \file
+ * \ingroup imbuf
+ */
+
+#include "BLI_ghash.h"
+struct ImBufCacheIter;
+namespace blender {
+
+/* Cache system for movie data - now supports storing ImBufs only
+ * Supposed to provide unified cache system for movie clips, sequencer and
+ * other movie-related areas */
+
+struct ImBuf;
+struct ImBufCache;
+
+using ImBufCacheGetKeyDataFP = void (*)(void *userkey,
+                                        int *framenr,
+                                        int *proxy,
+                                        int *render_flags);
+
+using ImBufCacheGetPriorityDataFP = void *(*)(void *userkey);
+using ImBufCacheGetItemPriorityFP = int (*)(void *last_userkey, void *priority_data);
+using ImBufCachePriorityDeleterFP = void (*)(void *priority_data);
+
+void IMB_cache_init();
+void IMB_cache_destruct();
+
+ImBufCache *IMB_cache_create(const char *name, int keysize, GHashHashFP hashfp, GHashCmpFP cmpfp);
+void IMB_cache_set_getdata_callback(ImBufCache *cache, ImBufCacheGetKeyDataFP getdatafp);
+void IMB_cache_set_priority_callback(ImBufCache *cache,
+                                     ImBufCacheGetPriorityDataFP getprioritydatafp,
+                                     ImBufCacheGetItemPriorityFP getitempriorityfp,
+                                     ImBufCachePriorityDeleterFP prioritydeleterfp);
+
+void IMB_cache_put(ImBufCache *cache, void *userkey, ImBuf *ibuf);
+bool IMB_cache_put_if_possible(ImBufCache *cache, void *userkey, ImBuf *ibuf);
+ImBuf *IMB_cache_get(ImBufCache *cache, void *userkey, bool *r_is_cached_empty);
+void IMB_cache_remove(ImBufCache *cache, void *userkey);
+bool IMB_cache_has_frame(ImBufCache *cache, void *userkey);
+void IMB_cache_free(ImBufCache *cache);
+
+void IMB_cache_cleanup(ImBufCache *cache,
+                       bool(cleanup_check_cb)(ImBuf *ibuf, void *userkey, void *userdata),
+                       void *userdata);
+
+/**
+ * Get segments of cached frames. Useful for debugging cache policies.
+ */
+void IMB_cache_get_cache_segments(
+    ImBufCache *cache, int proxy, int render_flags, int *r_totseg, int **r_points);
+
+ImBufCacheIter *IMB_cacheIter_new(ImBufCache *cache);
+void IMB_cacheIter_free(ImBufCacheIter *iter);
+bool IMB_cacheIter_done(ImBufCacheIter *iter);
+void IMB_cacheIter_step(ImBufCacheIter *iter);
+ImBuf *IMB_cacheIter_getImBuf(ImBufCacheIter *iter);
+void *IMB_cacheIter_getUserKey(ImBufCacheIter *iter);
+
+}  // namespace blender