2008-12-17 15:59:43 +00:00
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/*
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2011-07-28 14:26:00 +00:00
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* Copyright 2006 The Android Open Source Project
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2008-12-17 15:59:43 +00:00
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*
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2011-07-28 14:26:00 +00:00
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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2008-12-17 15:59:43 +00:00
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*/
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#ifndef SkGraphics_DEFINED
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#define SkGraphics_DEFINED
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2019-04-23 17:05:21 +00:00
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#include "include/core/SkRefCnt.h"
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2008-12-17 15:59:43 +00:00
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2015-07-09 18:47:36 +00:00
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class SkData;
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class SkImageGenerator;
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2015-08-27 16:23:54 +00:00
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class SkTraceMemoryDump;
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2015-07-09 18:47:36 +00:00
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2012-04-23 13:43:30 +00:00
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class SK_API SkGraphics {
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2008-12-17 15:59:43 +00:00
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public:
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2011-12-15 14:16:43 +00:00
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/**
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* Call this at process initialization time if your environment does not
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2015-07-30 14:30:16 +00:00
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* permit static global initializers that execute code.
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* Init() is thread-safe and idempotent.
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2011-12-15 14:16:43 +00:00
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*/
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2009-03-07 03:39:23 +00:00
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static void Init();
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2011-12-15 14:16:43 +00:00
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2015-09-09 14:35:42 +00:00
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// We're in the middle of cleaning this up.
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static void Term() {}
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2008-12-17 15:59:43 +00:00
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2011-11-08 13:48:32 +00:00
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/**
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* Return the max number of bytes that should be used by the font cache.
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* If the cache needs to allocate more, it will purge previous entries.
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* This max can be changed by calling SetFontCacheLimit().
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2010-04-13 13:22:54 +00:00
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*/
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2011-11-08 13:48:32 +00:00
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static size_t GetFontCacheLimit();
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2012-08-23 18:09:54 +00:00
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2011-11-08 13:48:32 +00:00
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/**
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* Specify the max number of bytes that should be used by the font cache.
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* If the cache needs to allocate more, it will purge previous entries.
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*
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* This function returns the previous setting, as if GetFontCacheLimit()
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* had be called before the new limit was set.
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*/
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static size_t SetFontCacheLimit(size_t bytes);
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2010-04-13 13:22:54 +00:00
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2012-07-30 13:08:01 +00:00
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/**
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* Return the number of bytes currently used by the font cache.
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*/
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static size_t GetFontCacheUsed();
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2013-09-26 19:28:27 +00:00
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/**
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* Return the number of entries in the font cache.
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* A cache "entry" is associated with each typeface + pointSize + matrix.
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*/
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static int GetFontCacheCountUsed();
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/**
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* Return the current limit to the number of entries in the font cache.
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* A cache "entry" is associated with each typeface + pointSize + matrix.
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*/
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static int GetFontCacheCountLimit();
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/**
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* Set the limit to the number of entries in the font cache, and return
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* the previous value. If this new value is lower than the previous,
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* it will automatically try to purge entries to meet the new limit.
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*/
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static int SetFontCacheCountLimit(int count);
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2013-09-27 07:01:29 +00:00
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2011-11-08 20:03:48 +00:00
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/**
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* For debugging purposes, this will attempt to purge the font cache. It
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* does not change the limit, but will cause subsequent font measures and
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* draws to be recreated, since they will no longer be in the cache.
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*/
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static void PurgeFontCache();
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2012-08-23 18:09:54 +00:00
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2014-07-17 13:58:01 +00:00
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/**
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2021-03-20 22:14:29 +00:00
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* This function returns the memory used for temporary images and other resources.
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2014-07-17 13:58:01 +00:00
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*/
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2014-08-28 20:35:23 +00:00
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static size_t GetResourceCacheTotalBytesUsed();
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/**
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* These functions get/set the memory usage limit for the resource cache, used for temporary
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* bitmaps and other resources. Entries are purged from the cache when the memory useage
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* exceeds this limit.
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*/
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static size_t GetResourceCacheTotalByteLimit();
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static size_t SetResourceCacheTotalByteLimit(size_t newLimit);
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2014-09-11 19:22:34 +00:00
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/**
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* For debugging purposes, this will attempt to purge the resource cache. It
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* does not change the limit.
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*/
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static void PurgeResourceCache();
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2014-07-17 13:58:01 +00:00
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/**
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2014-08-28 20:35:23 +00:00
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* When the cachable entry is very lage (e.g. a large scaled bitmap), adding it to the cache
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* can cause most/all of the existing entries to be purged. To avoid the, the client can set
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* a limit for a single allocation. If a cacheable entry would have been cached, but its size
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* exceeds this limit, then we do not attempt to cache it at all.
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*
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* Zero is the default value, meaning we always attempt to cache entries.
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2014-07-17 13:58:01 +00:00
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*/
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2014-08-28 20:35:23 +00:00
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static size_t GetResourceCacheSingleAllocationByteLimit();
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static size_t SetResourceCacheSingleAllocationByteLimit(size_t newLimit);
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2014-07-17 13:58:01 +00:00
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2015-08-27 16:23:54 +00:00
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/**
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* Dumps memory usage of caches using the SkTraceMemoryDump interface. See SkTraceMemoryDump
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* for usage of this method.
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*/
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static void DumpMemoryStatistics(SkTraceMemoryDump* dump);
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2016-02-22 14:19:54 +00:00
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/**
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* Free as much globally cached memory as possible. This will purge all private caches in Skia,
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* including font and image caches.
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*
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* If there are caches associated with GPU context, those will not be affected by this call.
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*/
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static void PurgeAllCaches();
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2011-11-21 20:42:14 +00:00
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/**
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* Applications with command line options may pass optional state, such
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* as cache sizes, here, for instance:
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* font-cache-limit=12345678
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*
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* The flags format is name=value[;name=value...] with no spaces.
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* This format is subject to change.
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*/
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static void SetFlags(const char* flags);
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2012-08-23 18:09:54 +00:00
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2017-02-15 20:14:16 +00:00
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typedef std::unique_ptr<SkImageGenerator>
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(*ImageGeneratorFromEncodedDataFactory)(sk_sp<SkData>);
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2015-07-09 18:47:36 +00:00
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/**
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* To instantiate images from encoded data, first looks at this runtime function-ptr. If it
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* exists, it is called to create an SkImageGenerator from SkData. If there is no function-ptr
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* or there is, but it returns NULL, then skia will call its internal default implementation.
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2015-07-09 21:08:49 +00:00
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*
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* Returns the previous factory (which could be NULL).
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2015-07-09 18:47:36 +00:00
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*/
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2017-02-15 20:14:16 +00:00
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static ImageGeneratorFromEncodedDataFactory
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SetImageGeneratorFromEncodedDataFactory(ImageGeneratorFromEncodedDataFactory);
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2020-08-06 13:31:41 +00:00
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/**
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* Call early in main() to allow Skia to use a JIT to accelerate CPU-bound operations.
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*/
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static void AllowJIT();
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2008-12-17 15:59:43 +00:00
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};
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2009-06-21 00:49:18 +00:00
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class SkAutoGraphics {
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public:
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SkAutoGraphics() {
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SkGraphics::Init();
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}
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};
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2008-12-17 15:59:43 +00:00
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#endif
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