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| 1 /* | 1 /* |
| 2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkBitmap.h" | 8 #include "SkBitmap.h" |
| 9 #include "SkBitmapController.h" | 9 #include "SkBitmapController.h" |
| 10 #include "SkBitmapProvider.h" | 10 #include "SkBitmapProvider.h" |
| (...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 42 #include "SkMipMap.h" | 42 #include "SkMipMap.h" |
| 43 #include "SkResourceCache.h" | 43 #include "SkResourceCache.h" |
| 44 | 44 |
| 45 class SkDefaultBitmapControllerState : public SkBitmapController::State { | 45 class SkDefaultBitmapControllerState : public SkBitmapController::State { |
| 46 public: | 46 public: |
| 47 SkDefaultBitmapControllerState(const SkBitmapProvider&, const SkMatrix& inv,
SkFilterQuality); | 47 SkDefaultBitmapControllerState(const SkBitmapProvider&, const SkMatrix& inv,
SkFilterQuality); |
| 48 | 48 |
| 49 private: | 49 private: |
| 50 SkBitmap fResultBitmap; | 50 SkBitmap fResultBitmap; |
| 51 SkAutoTUnref<const SkMipMap> fCurrMip; | 51 SkAutoTUnref<const SkMipMap> fCurrMip; |
| 52 | 52 |
| 53 bool processHQRequest(const SkBitmapProvider&); | 53 bool processHQRequest(const SkBitmapProvider&); |
| 54 bool processMediumRequest(const SkBitmapProvider&); | 54 bool processMediumRequest(const SkBitmapProvider&); |
| 55 }; | 55 }; |
| 56 | 56 |
| 57 // Check to see that the size of the bitmap that would be produced by | 57 // Check to see that the size of the bitmap that would be produced by |
| 58 // scaling by the given inverted matrix is less than the maximum allowed. | 58 // scaling by the given inverted matrix is less than the maximum allowed. |
| 59 static inline bool cache_size_okay(const SkBitmapProvider& provider, const SkMat
rix& invMat) { | 59 static inline bool cache_size_okay(const SkBitmapProvider& provider, const SkMat
rix& invMat) { |
| 60 size_t maximumAllocation = SkResourceCache::GetEffectiveSingleAllocationByte
Limit(); | 60 size_t maximumAllocation = SkResourceCache::GetEffectiveSingleAllocationByte
Limit(); |
| 61 if (0 == maximumAllocation) { | 61 if (0 == maximumAllocation) { |
| 62 return true; | 62 return true; |
| 63 } | 63 } |
| 64 // float matrixScaleFactor = 1.0 / (invMat.scaleX * invMat.scaleY); | 64 // float matrixScaleFactor = 1.0 / (invMat.scaleX * invMat.scaleY); |
| 65 // return ((origBitmapSize * matrixScaleFactor) < maximumAllocationSize); | 65 // return ((origBitmapSize * matrixScaleFactor) < maximumAllocationSize); |
| 66 // Skip the division step: | 66 // Skip the division step: |
| 67 const size_t size = provider.info().getSafeSize(provider.info().minRowBytes(
)); | 67 const size_t size = provider.info().getSafeSize(provider.info().minRowBytes(
)); |
| 68 SkScalar invScaleSqr = invMat.getScaleX() * invMat.getScaleY(); | 68 SkScalar invScaleSqr = invMat.getScaleX() * invMat.getScaleY(); |
| 69 return size < (maximumAllocation * SkScalarAbs(invScaleSqr)); | 69 return size < (maximumAllocation * SkScalarAbs(invScaleSqr)); |
| 70 } | 70 } |
| 71 | 71 |
| 72 /* | 72 /* |
| 73 * High quality is implemented by performing up-right scale-only filtering and
then | 73 * High quality is implemented by performing up-right scale-only filtering and
then |
| 74 * using bilerp for any remaining transformations. | 74 * using bilerp for any remaining transformations. |
| 75 */ | 75 */ |
| 76 bool SkDefaultBitmapControllerState::processHQRequest(const SkBitmapProvider& pr
ovider) { | 76 bool SkDefaultBitmapControllerState::processHQRequest(const SkBitmapProvider& pr
ovider) { |
| 77 if (fQuality != kHigh_SkFilterQuality) { | 77 if (fQuality != kHigh_SkFilterQuality) { |
| 78 return false; | 78 return false; |
| 79 } | 79 } |
| 80 | 80 |
| 81 // Our default return state is to downgrade the request to Medium, w/ or w/o
setting fBitmap | 81 // Our default return state is to downgrade the request to Medium, w/ or w/o
setting fBitmap |
| 82 // to a valid bitmap. If we succeed, we will set this to Low instead. | 82 // to a valid bitmap. If we succeed, we will set this to Low instead. |
| 83 fQuality = kMedium_SkFilterQuality; | 83 fQuality = kMedium_SkFilterQuality; |
| 84 | 84 |
| 85 if (kN32_SkColorType != provider.info().colorType() || !cache_size_okay(prov
ider, fInvMatrix) || | 85 if (kN32_SkColorType != provider.info().colorType() || !cache_size_okay(prov
ider, fInvMatrix) || |
| 86 fInvMatrix.hasPerspective()) | 86 fInvMatrix.hasPerspective()) |
| 87 { | 87 { |
| 88 return false; // can't handle the reqeust | 88 return false; // can't handle the reqeust |
| 89 } | 89 } |
| 90 | 90 |
| 91 SkScalar invScaleX = fInvMatrix.getScaleX(); | 91 SkScalar invScaleX = fInvMatrix.getScaleX(); |
| 92 SkScalar invScaleY = fInvMatrix.getScaleY(); | 92 SkScalar invScaleY = fInvMatrix.getScaleY(); |
| 93 if (fInvMatrix.getType() & SkMatrix::kAffine_Mask) { | 93 if (fInvMatrix.getType() & SkMatrix::kAffine_Mask) { |
| 94 SkSize scale; | 94 SkSize scale; |
| 95 if (!fInvMatrix.decomposeScale(&scale)) { | 95 if (!fInvMatrix.decomposeScale(&scale)) { |
| 96 return false; | 96 return false; |
| 97 } | 97 } |
| 98 invScaleX = scale.width(); | 98 invScaleX = scale.width(); |
| 99 invScaleY = scale.height(); | 99 invScaleY = scale.height(); |
| 100 } | 100 } |
| (...skipping 18 matching lines...) Expand all Loading... |
| 119 return false; | 119 return false; |
| 120 } | 120 } |
| 121 SkAutoPixmapUnlock src; | 121 SkAutoPixmapUnlock src; |
| 122 if (!orig.requestLock(&src)) { | 122 if (!orig.requestLock(&src)) { |
| 123 return false; | 123 return false; |
| 124 } | 124 } |
| 125 if (!SkBitmapScaler::Resize(&fResultBitmap, src.pixmap(), kHQ_RESIZE_MET
HOD, | 125 if (!SkBitmapScaler::Resize(&fResultBitmap, src.pixmap(), kHQ_RESIZE_MET
HOD, |
| 126 dstW, dstH, SkResourceCache::GetAllocator())
) { | 126 dstW, dstH, SkResourceCache::GetAllocator())
) { |
| 127 return false; // we failed to create fScaledBitmap | 127 return false; // we failed to create fScaledBitmap |
| 128 } | 128 } |
| 129 | 129 |
| 130 SkASSERT(fResultBitmap.getPixels()); | 130 SkASSERT(fResultBitmap.getPixels()); |
| 131 fResultBitmap.setImmutable(); | 131 fResultBitmap.setImmutable(); |
| 132 if (!provider.isVolatile()) { | 132 if (!provider.isVolatile()) { |
| 133 if (SkBitmapCache::AddWH(desc, fResultBitmap)) { | 133 if (SkBitmapCache::AddWH(desc, fResultBitmap)) { |
| 134 provider.notifyAddedToCache(); | 134 provider.notifyAddedToCache(); |
| 135 } | 135 } |
| 136 } | 136 } |
| 137 } | 137 } |
| 138 | 138 |
| 139 SkASSERT(fResultBitmap.getPixels()); | 139 SkASSERT(fResultBitmap.getPixels()); |
| 140 | 140 |
| 141 fInvMatrix.postScale(SkIntToScalar(dstW) / provider.width(), | 141 fInvMatrix.postScale(SkIntToScalar(dstW) / provider.width(), |
| 142 SkIntToScalar(dstH) / provider.height()); | 142 SkIntToScalar(dstH) / provider.height()); |
| 143 fQuality = kLow_SkFilterQuality; | 143 fQuality = kLow_SkFilterQuality; |
| 144 return true; | 144 return true; |
| 145 } | 145 } |
| 146 | 146 |
| 147 /* | 147 /* |
| 148 * Modulo internal errors, this should always succeed *if* the matrix is downsc
aling | 148 * Modulo internal errors, this should always succeed *if* the matrix is downsc
aling |
| 149 * (in this case, we have the inverse, so it succeeds if fInvMatrix is upscalin
g) | 149 * (in this case, we have the inverse, so it succeeds if fInvMatrix is upscalin
g) |
| 150 */ | 150 */ |
| 151 bool SkDefaultBitmapControllerState::processMediumRequest(const SkBitmapProvider
& provider) { | 151 bool SkDefaultBitmapControllerState::processMediumRequest(const SkBitmapProvider
& provider) { |
| 152 SkASSERT(fQuality <= kMedium_SkFilterQuality); | 152 SkASSERT(fQuality <= kMedium_SkFilterQuality); |
| 153 if (fQuality != kMedium_SkFilterQuality) { | 153 if (fQuality != kMedium_SkFilterQuality) { |
| 154 return false; | 154 return false; |
| 155 } | 155 } |
| 156 | 156 |
| 157 // Our default return state is to downgrade the request to Low, w/ or w/o se
tting fBitmap | 157 // Our default return state is to downgrade the request to Low, w/ or w/o se
tting fBitmap |
| 158 // to a valid bitmap. | 158 // to a valid bitmap. |
| 159 fQuality = kLow_SkFilterQuality; | 159 fQuality = kLow_SkFilterQuality; |
| 160 | 160 |
| 161 SkSize invScaleSize; | 161 SkSize invScaleSize; |
| 162 if (!fInvMatrix.decomposeScale(&invScaleSize, nullptr)) { | 162 if (!fInvMatrix.decomposeScale(&invScaleSize, nullptr)) { |
| 163 return false; | 163 return false; |
| 164 } | 164 } |
| 165 | 165 |
| 166 if (invScaleSize.width() > SK_Scalar1 || invScaleSize.height() > SK_Scalar1)
{ | 166 if (invScaleSize.width() > SK_Scalar1 || invScaleSize.height() > SK_Scalar1)
{ |
| 167 fCurrMip.reset(SkMipMapCache::FindAndRef(provider.makeCacheDesc())); | 167 fCurrMip.reset(SkMipMapCache::FindAndRef(provider.makeCacheDesc())); |
| 168 if (nullptr == fCurrMip.get()) { | 168 if (nullptr == fCurrMip.get()) { |
| 169 SkBitmap orig; | 169 SkBitmap orig; |
| 170 if (!provider.asBitmap(&orig)) { | 170 if (!provider.asBitmap(&orig)) { |
| 171 return false; | 171 return false; |
| 172 } | 172 } |
| 173 fCurrMip.reset(SkMipMapCache::AddAndRef(orig)); | 173 fCurrMip.reset(SkMipMapCache::AddAndRef(orig)); |
| 174 if (nullptr == fCurrMip.get()) { | 174 if (nullptr == fCurrMip.get()) { |
| 175 return false; | 175 return false; |
| 176 } | 176 } |
| 177 } | 177 } |
| 178 // diagnostic for a crasher... | 178 // diagnostic for a crasher... |
| 179 if (nullptr == fCurrMip->data()) { | 179 if (nullptr == fCurrMip->data()) { |
| 180 sk_throw(); | 180 sk_throw(); |
| 181 } | 181 } |
| 182 | 182 |
| 183 const SkSize scale = SkSize::Make(SkScalarInvert(invScaleSize.width()), | 183 const SkSize scale = SkSize::Make(SkScalarInvert(invScaleSize.width()), |
| 184 SkScalarInvert(invScaleSize.height()))
; | 184 SkScalarInvert(invScaleSize.height()))
; |
| 185 SkMipMap::Level level; | 185 SkMipMap::Level level; |
| 186 if (fCurrMip->extractLevel(scale, &level)) { | 186 if (fCurrMip->extractLevel(scale, &level)) { |
| 187 const SkSize& invScaleFixup = level.fScale; | 187 const SkSize& invScaleFixup = level.fScale; |
| 188 fInvMatrix.postScale(invScaleFixup.width(), invScaleFixup.height()); | 188 fInvMatrix.postScale(invScaleFixup.width(), invScaleFixup.height()); |
| 189 | 189 |
| 190 // todo: if we could wrap the fCurrMip in a pixelref, then we could
just install | 190 // todo: if we could wrap the fCurrMip in a pixelref, then we could
just install |
| 191 // that here, and not need to explicitly track it ourselves. | 191 // that here, and not need to explicitly track it ourselves. |
| 192 return fResultBitmap.installPixels(level.fPixmap); | 192 return fResultBitmap.installPixels(level.fPixmap); |
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| 218 fPixmap.reset(fResultBitmap.info(), fResultBitmap.getPixels(), fResultBitmap
.rowBytes(), | 218 fPixmap.reset(fResultBitmap.info(), fResultBitmap.getPixels(), fResultBitmap
.rowBytes(), |
| 219 fResultBitmap.getColorTable()); | 219 fResultBitmap.getColorTable()); |
| 220 } | 220 } |
| 221 | 221 |
| 222 SkBitmapController::State* SkDefaultBitmapController::onRequestBitmap(const SkBi
tmapProvider& bm, | 222 SkBitmapController::State* SkDefaultBitmapController::onRequestBitmap(const SkBi
tmapProvider& bm, |
| 223 const SkMa
trix& inverse, | 223 const SkMa
trix& inverse, |
| 224 SkFilterQu
ality quality, | 224 SkFilterQu
ality quality, |
| 225 void* stor
age, size_t size) { | 225 void* stor
age, size_t size) { |
| 226 return SkInPlaceNewCheck<SkDefaultBitmapControllerState>(storage, size, bm,
inverse, quality); | 226 return SkInPlaceNewCheck<SkDefaultBitmapControllerState>(storage, size, bm,
inverse, quality); |
| 227 } | 227 } |
| 228 | |
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