1 2 /* 3 * Copyright 2008 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #ifndef SkImageRef_GlobalPool_DEFINED 11 #define SkImageRef_GlobalPool_DEFINED 12 13 #include "SkImageRef.h" 14 15 class SkImageRef_GlobalPool : public SkImageRef { 16 public: 17 // if pool is null, use the global pool 18 SkImageRef_GlobalPool(const SkImageInfo&, SkStreamRewindable*, 19 int sampleSize = 1); 20 virtual ~SkImageRef_GlobalPool(); 21 22 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkImageRef_GlobalPool) 23 24 // API to control the global pool 25 26 /** Return the amount specified as the budget for the cache (in bytes). 27 */ 28 static size_t GetRAMBudget(); 29 30 /** Set a new budget value for the cache. 31 */ 32 static void SetRAMBudget(size_t); 33 34 /** Return how much ram is currently in use by the global cache. 35 */ 36 static size_t GetRAMUsed(); 37 38 /** Free up (approximately) enough such that the amount used by the cache 39 is <= the specified amount. Since some images may be "in use", the 40 amount actually freed may not always result in a ram usage value <= 41 to the requested amount. In addition, because of the 42 chunky nature of the cache, the resulting usage may be < the requested 43 amount. 44 */ 45 static void SetRAMUsed(size_t usageInBytes); 46 47 static void DumpPool(); 48 49 protected: 50 virtual bool onDecode(SkImageDecoder* codec, SkStreamRewindable* stream, 51 SkBitmap* bitmap, SkBitmap::Config config, 52 SkImageDecoder::Mode mode); 53 54 virtual void onUnlockPixels(); 55 56 SkImageRef_GlobalPool(SkFlattenableReadBuffer&); 57 58 private: 59 typedef SkImageRef INHERITED; 60 }; 61 62 #endif 63
