reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkBitmapCache.h" |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 9 | #include "SkResourceCache.h" |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 10 | #include "SkMipMap.h" |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 11 | #include "SkRect.h" |
| 12 | |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 13 | /** |
| 14 | * Use this for bitmapcache and mipmapcache entries. |
| 15 | */ |
| 16 | uint64_t SkMakeResourceCacheSharedIDForBitmap(uint32_t bitmapGenID) { |
| 17 | uint64_t sharedID = SkSetFourByteTag('b', 'm', 'a', 'p'); |
| 18 | return (sharedID << 32) | bitmapGenID; |
| 19 | } |
| 20 | |
| 21 | void SkNotifyBitmapGenIDIsStale(uint32_t bitmapGenID) { |
| 22 | SkResourceCache::PostPurgeSharedID(SkMakeResourceCacheSharedIDForBitmap(bitmapGenID)); |
| 23 | } |
| 24 | |
| 25 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 26 | |
reed | 14b6aba | 2014-08-29 10:25:26 -0700 | [diff] [blame] | 27 | SkBitmap::Allocator* SkBitmapCache::GetAllocator() { |
| 28 | return SkResourceCache::GetAllocator(); |
| 29 | } |
| 30 | |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 31 | /** |
| 32 | This function finds the bounds of the bitmap *within its pixelRef*. |
| 33 | If the bitmap lacks a pixelRef, it will return an empty rect, since |
| 34 | that doesn't make sense. This may be a useful enough function that |
| 35 | it should be somewhere else (in SkBitmap?). |
| 36 | */ |
| 37 | static SkIRect get_bounds_from_bitmap(const SkBitmap& bm) { |
| 38 | if (!(bm.pixelRef())) { |
| 39 | return SkIRect::MakeEmpty(); |
| 40 | } |
| 41 | SkIPoint origin = bm.pixelRefOrigin(); |
| 42 | return SkIRect::MakeXYWH(origin.fX, origin.fY, bm.width(), bm.height()); |
| 43 | } |
| 44 | |
fmalita | 171e5b7 | 2014-10-22 11:20:40 -0700 | [diff] [blame] | 45 | namespace { |
| 46 | static unsigned gBitmapKeyNamespaceLabel; |
| 47 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 48 | struct BitmapKey : public SkResourceCache::Key { |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 49 | public: |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 50 | BitmapKey(uint32_t genID, SkScalar sx, SkScalar sy, const SkIRect& bounds) |
| 51 | : fGenID(genID) |
| 52 | , fScaleX(sx) |
| 53 | , fScaleY(sy) |
| 54 | , fBounds(bounds) |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 55 | { |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 56 | this->init(&gBitmapKeyNamespaceLabel, SkMakeResourceCacheSharedIDForBitmap(genID), |
fmalita | 171e5b7 | 2014-10-22 11:20:40 -0700 | [diff] [blame] | 57 | sizeof(fGenID) + sizeof(fScaleX) + sizeof(fScaleY) + sizeof(fBounds)); |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 58 | } |
qiankun.miao | 045bb7f | 2014-08-25 06:08:25 -0700 | [diff] [blame] | 59 | |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 60 | uint32_t fGenID; |
| 61 | SkScalar fScaleX; |
| 62 | SkScalar fScaleY; |
| 63 | SkIRect fBounds; |
| 64 | }; |
| 65 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 66 | struct BitmapRec : public SkResourceCache::Rec { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 67 | BitmapRec(uint32_t genID, SkScalar scaleX, SkScalar scaleY, const SkIRect& bounds, |
| 68 | const SkBitmap& result) |
| 69 | : fKey(genID, scaleX, scaleY, bounds) |
| 70 | , fBitmap(result) |
| 71 | {} |
| 72 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 73 | const Key& getKey() const SK_OVERRIDE { return fKey; } |
| 74 | size_t bytesUsed() const SK_OVERRIDE { return sizeof(fKey) + fBitmap.getSize(); } |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 75 | |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 76 | static bool Finder(const SkResourceCache::Rec& baseRec, void* contextBitmap) { |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 77 | const BitmapRec& rec = static_cast<const BitmapRec&>(baseRec); |
| 78 | SkBitmap* result = (SkBitmap*)contextBitmap; |
reed | 595aa05 | 2014-09-15 10:15:18 -0700 | [diff] [blame] | 79 | |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 80 | *result = rec.fBitmap; |
reed | 595aa05 | 2014-09-15 10:15:18 -0700 | [diff] [blame] | 81 | result->lockPixels(); |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 82 | return SkToBool(result->getPixels()); |
reed | 595aa05 | 2014-09-15 10:15:18 -0700 | [diff] [blame] | 83 | } |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 84 | |
| 85 | private: |
| 86 | BitmapKey fKey; |
| 87 | SkBitmap fBitmap; |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 88 | }; |
fmalita | 171e5b7 | 2014-10-22 11:20:40 -0700 | [diff] [blame] | 89 | } // namespace |
reed | 595aa05 | 2014-09-15 10:15:18 -0700 | [diff] [blame] | 90 | |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 91 | #define CHECK_LOCAL(localCache, localName, globalName, ...) \ |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 92 | ((localCache) ? localCache->localName(__VA_ARGS__) : SkResourceCache::globalName(__VA_ARGS__)) |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 93 | |
| 94 | bool SkBitmapCache::Find(const SkBitmap& src, SkScalar invScaleX, SkScalar invScaleY, SkBitmap* result, |
| 95 | SkResourceCache* localCache) { |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 96 | if (0 == invScaleX || 0 == invScaleY) { |
| 97 | // degenerate, and the key we use for mipmaps |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 98 | return false; |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 99 | } |
| 100 | BitmapKey key(src.getGenerationID(), invScaleX, invScaleY, get_bounds_from_bitmap(src)); |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 101 | |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 102 | return CHECK_LOCAL(localCache, find, Find, key, BitmapRec::Finder, result); |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 103 | } |
| 104 | |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 105 | void SkBitmapCache::Add(const SkBitmap& src, SkScalar invScaleX, SkScalar invScaleY, |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 106 | const SkBitmap& result, SkResourceCache* localCache) { |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 107 | if (0 == invScaleX || 0 == invScaleY) { |
| 108 | // degenerate, and the key we use for mipmaps |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 109 | return; |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 110 | } |
reed | 14b6aba | 2014-08-29 10:25:26 -0700 | [diff] [blame] | 111 | SkASSERT(result.isImmutable()); |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 112 | BitmapRec* rec = SkNEW_ARGS(BitmapRec, (src.getGenerationID(), invScaleX, invScaleY, |
| 113 | get_bounds_from_bitmap(src), result)); |
| 114 | CHECK_LOCAL(localCache, add, Add, rec); |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 115 | } |
| 116 | |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 117 | bool SkBitmapCache::Find(uint32_t genID, const SkIRect& subset, SkBitmap* result, |
| 118 | SkResourceCache* localCache) { |
piotaixr | 42b0dfe | 2014-09-03 11:33:13 -0700 | [diff] [blame] | 119 | BitmapKey key(genID, SK_Scalar1, SK_Scalar1, subset); |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 120 | |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 121 | return CHECK_LOCAL(localCache, find, Find, key, BitmapRec::Finder, result); |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 122 | } |
| 123 | |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 124 | bool SkBitmapCache::Add(uint32_t genID, const SkIRect& subset, const SkBitmap& result, |
| 125 | SkResourceCache* localCache) { |
reed | 14b6aba | 2014-08-29 10:25:26 -0700 | [diff] [blame] | 126 | SkASSERT(result.isImmutable()); |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 127 | |
piotaixr | 42b0dfe | 2014-09-03 11:33:13 -0700 | [diff] [blame] | 128 | if (subset.isEmpty() |
| 129 | || subset.top() < 0 |
| 130 | || subset.left() < 0 |
| 131 | || result.width() != subset.width() |
| 132 | || result.height() != subset.height()) { |
| 133 | return false; |
| 134 | } else { |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 135 | BitmapRec* rec = SkNEW_ARGS(BitmapRec, (genID, SK_Scalar1, SK_Scalar1, subset, result)); |
piotaixr | 42b0dfe | 2014-09-03 11:33:13 -0700 | [diff] [blame] | 136 | |
reed | 30ad530 | 2014-09-16 10:39:55 -0700 | [diff] [blame] | 137 | CHECK_LOCAL(localCache, add, Add, rec); |
piotaixr | 42b0dfe | 2014-09-03 11:33:13 -0700 | [diff] [blame] | 138 | return true; |
| 139 | } |
| 140 | } |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 141 | |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 142 | ////////////////////////////////////////////////////////////////////////////////////////// |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 143 | ////////////////////////////////////////////////////////////////////////////////////////// |
| 144 | |
| 145 | namespace { |
| 146 | static unsigned gMipMapKeyNamespaceLabel; |
| 147 | |
| 148 | struct MipMapKey : public SkResourceCache::Key { |
| 149 | public: |
| 150 | MipMapKey(uint32_t genID, const SkIRect& bounds) : fGenID(genID), fBounds(bounds) { |
| 151 | this->init(&gMipMapKeyNamespaceLabel, SkMakeResourceCacheSharedIDForBitmap(genID), |
| 152 | sizeof(fGenID) + sizeof(fBounds)); |
| 153 | } |
| 154 | |
| 155 | uint32_t fGenID; |
| 156 | SkIRect fBounds; |
| 157 | }; |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 158 | |
reed | 011f39a | 2014-08-28 13:35:23 -0700 | [diff] [blame] | 159 | struct MipMapRec : public SkResourceCache::Rec { |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 160 | MipMapRec(const SkBitmap& src, const SkMipMap* result) |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 161 | : fKey(src.getGenerationID(), get_bounds_from_bitmap(src)) |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 162 | , fMipMap(result) |
| 163 | { |
| 164 | fMipMap->attachToCacheAndRef(); |
reed | 92561a0 | 2014-10-02 13:47:08 -0700 | [diff] [blame] | 165 | } |
piotaixr | 42b0dfe | 2014-09-03 11:33:13 -0700 | [diff] [blame] | 166 | |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 167 | virtual ~MipMapRec() { |
| 168 | fMipMap->detachFromCacheAndUnref(); |
| 169 | } |
reed | 37c5a81 | 2014-10-03 13:23:30 -0700 | [diff] [blame] | 170 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 171 | const Key& getKey() const SK_OVERRIDE { return fKey; } |
| 172 | size_t bytesUsed() const SK_OVERRIDE { return sizeof(fKey) + fMipMap->size(); } |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 173 | |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 174 | static bool Finder(const SkResourceCache::Rec& baseRec, void* contextMip) { |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 175 | const MipMapRec& rec = static_cast<const MipMapRec&>(baseRec); |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 176 | const SkMipMap* mm = SkRef(rec.fMipMap); |
| 177 | // the call to ref() above triggers a "lock" in the case of discardable memory, |
| 178 | // which means we can now check for null (in case the lock failed). |
| 179 | if (NULL == mm->data()) { |
| 180 | mm->unref(); // balance our call to ref() |
| 181 | return false; |
| 182 | } |
| 183 | // the call must call unref() when they are done. |
| 184 | *(const SkMipMap**)contextMip = mm; |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 185 | return true; |
| 186 | } |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 187 | |
| 188 | private: |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 189 | MipMapKey fKey; |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 190 | const SkMipMap* fMipMap; |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 191 | }; |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 192 | } |
reed | 595aa05 | 2014-09-15 10:15:18 -0700 | [diff] [blame] | 193 | |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 194 | const SkMipMap* SkMipMapCache::FindAndRef(const SkBitmap& src, SkResourceCache* localCache) { |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 195 | MipMapKey key(src.getGenerationID(), get_bounds_from_bitmap(src)); |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 196 | const SkMipMap* result; |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 197 | |
reed | 7eeba25 | 2015-02-24 13:54:23 -0800 | [diff] [blame^] | 198 | if (!CHECK_LOCAL(localCache, find, Find, key, MipMapRec::Finder, &result)) { |
reed | c90e014 | 2014-09-15 11:39:44 -0700 | [diff] [blame] | 199 | result = NULL; |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 200 | } |
| 201 | return result; |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 202 | } |
| 203 | |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 204 | static SkResourceCache::DiscardableFactory get_fact(SkResourceCache* localCache) { |
| 205 | return localCache ? localCache->GetDiscardableFactory() |
| 206 | : SkResourceCache::GetDiscardableFactory(); |
| 207 | } |
| 208 | |
| 209 | const SkMipMap* SkMipMapCache::AddAndRef(const SkBitmap& src, SkResourceCache* localCache) { |
| 210 | SkMipMap* mipmap = SkMipMap::Build(src, get_fact(localCache)); |
| 211 | if (mipmap) { |
| 212 | MipMapRec* rec = SkNEW_ARGS(MipMapRec, (src, mipmap)); |
| 213 | CHECK_LOCAL(localCache, add, Add, rec); |
reed | 680fb9e | 2014-08-26 09:08:04 -0700 | [diff] [blame] | 214 | } |
reed | 9d93c2e | 2014-10-08 05:17:12 -0700 | [diff] [blame] | 215 | return mipmap; |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame] | 216 | } |