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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 "SkMatrix.h" | 10 #include "SkMatrix.h" |
11 #include "SkTemplates.h" | 11 #include "SkTemplates.h" |
12 | 12 |
13 ////////////////////////////////////////////////////////////////////////////////
/////////////////// | 13 ////////////////////////////////////////////////////////////////////////////////
/////////////////// |
14 | 14 |
15 static bool valid_for_drawing(const SkBitmap& bm) { | 15 static bool valid_for_drawing(const SkBitmap& bm) { |
16 if (0 == bm.width() || 0 == bm.height()) { | 16 if (0 == bm.width() || 0 == bm.height()) { |
17 return false; // nothing to draw | 17 return false; // nothing to draw |
18 } | 18 } |
19 if (NULL == bm.pixelRef()) { | 19 if (nullptr == bm.pixelRef()) { |
20 return false; // no pixels to read | 20 return false; // no pixels to read |
21 } | 21 } |
22 if (bm.getTexture()) { | 22 if (bm.getTexture()) { |
23 // we can handle texture (ugh) since lockPixels will perform a read-back | 23 // we can handle texture (ugh) since lockPixels will perform a read-back |
24 return true; | 24 return true; |
25 } | 25 } |
26 if (kIndex_8_SkColorType == bm.colorType()) { | 26 if (kIndex_8_SkColorType == bm.colorType()) { |
27 SkAutoLockPixels alp(bm); // but we need to call it before getColorTable
() is safe. | 27 SkAutoLockPixels alp(bm); // but we need to call it before getColorTable
() is safe. |
28 if (!bm.getColorTable()) { | 28 if (!bm.getColorTable()) { |
29 return false; | 29 return false; |
30 } | 30 } |
31 } | 31 } |
32 return true; | 32 return true; |
33 } | 33 } |
34 | 34 |
35 SkBitmapController::State* SkBitmapController::requestBitmap(const SkBitmap& bm, | 35 SkBitmapController::State* SkBitmapController::requestBitmap(const SkBitmap& bm, |
36 const SkMatrix& inv
, | 36 const SkMatrix& inv
, |
37 SkFilterQuality qua
lity, | 37 SkFilterQuality qua
lity, |
38 void* storage, size
_t storageSize) { | 38 void* storage, size
_t storageSize) { |
39 | 39 |
40 if (!valid_for_drawing(bm)) { | 40 if (!valid_for_drawing(bm)) { |
41 return NULL; | 41 return nullptr; |
42 } | 42 } |
43 | 43 |
44 State* state = this->onRequestBitmap(bm, inv, quality, storage, storageSize)
; | 44 State* state = this->onRequestBitmap(bm, inv, quality, storage, storageSize)
; |
45 if (state) { | 45 if (state) { |
46 if (NULL == state->fPixmap.addr()) { | 46 if (nullptr == state->fPixmap.addr()) { |
47 SkInPlaceDeleteCheck(state, storage); | 47 SkInPlaceDeleteCheck(state, storage); |
48 state = NULL; | 48 state = nullptr; |
49 } | 49 } |
50 } | 50 } |
51 return state; | 51 return state; |
52 } | 52 } |
53 | 53 |
54 ////////////////////////////////////////////////////////////////////////////////
/////////////////// | 54 ////////////////////////////////////////////////////////////////////////////////
/////////////////// |
55 | 55 |
56 #include "SkBitmapCache.h" | 56 #include "SkBitmapCache.h" |
57 #include "SkBitmapScaler.h" | 57 #include "SkBitmapScaler.h" |
58 #include "SkMipMap.h" | 58 #include "SkMipMap.h" |
(...skipping 95 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
154 SkASSERT(fQuality <= kMedium_SkFilterQuality); | 154 SkASSERT(fQuality <= kMedium_SkFilterQuality); |
155 if (fQuality != kMedium_SkFilterQuality) { | 155 if (fQuality != kMedium_SkFilterQuality) { |
156 return false; | 156 return false; |
157 } | 157 } |
158 | 158 |
159 // Our default return state is to downgrade the request to Low, w/ or w/o se
tting fBitmap | 159 // Our default return state is to downgrade the request to Low, w/ or w/o se
tting fBitmap |
160 // to a valid bitmap. | 160 // to a valid bitmap. |
161 fQuality = kLow_SkFilterQuality; | 161 fQuality = kLow_SkFilterQuality; |
162 | 162 |
163 SkSize invScaleSize; | 163 SkSize invScaleSize; |
164 if (!fInvMatrix.decomposeScale(&invScaleSize, NULL)) { | 164 if (!fInvMatrix.decomposeScale(&invScaleSize, nullptr)) { |
165 return false; | 165 return false; |
166 } | 166 } |
167 SkScalar invScale = SkScalarSqrt(invScaleSize.width() * invScaleSize.height(
)); | 167 SkScalar invScale = SkScalarSqrt(invScaleSize.width() * invScaleSize.height(
)); |
168 | 168 |
169 if (invScale > SK_Scalar1) { | 169 if (invScale > SK_Scalar1) { |
170 fCurrMip.reset(SkMipMapCache::FindAndRef(origBitmap)); | 170 fCurrMip.reset(SkMipMapCache::FindAndRef(origBitmap)); |
171 if (NULL == fCurrMip.get()) { | 171 if (nullptr == fCurrMip.get()) { |
172 fCurrMip.reset(SkMipMapCache::AddAndRef(origBitmap)); | 172 fCurrMip.reset(SkMipMapCache::AddAndRef(origBitmap)); |
173 if (NULL == fCurrMip.get()) { | 173 if (nullptr == fCurrMip.get()) { |
174 return false; | 174 return false; |
175 } | 175 } |
176 } | 176 } |
177 // diagnostic for a crasher... | 177 // diagnostic for a crasher... |
178 if (NULL == fCurrMip->data()) { | 178 if (nullptr == fCurrMip->data()) { |
179 sk_throw(); | 179 sk_throw(); |
180 } | 180 } |
181 | 181 |
182 SkScalar levelScale = SkScalarInvert(invScale); | 182 SkScalar levelScale = SkScalarInvert(invScale); |
183 SkMipMap::Level level; | 183 SkMipMap::Level level; |
184 if (fCurrMip->extractLevel(levelScale, &level)) { | 184 if (fCurrMip->extractLevel(levelScale, &level)) { |
185 SkScalar invScaleFixup = level.fScale; | 185 SkScalar invScaleFixup = level.fScale; |
186 fInvMatrix.postScale(invScaleFixup, invScaleFixup); | 186 fInvMatrix.postScale(invScaleFixup, invScaleFixup); |
187 | 187 |
188 const SkImageInfo info = origBitmap.info().makeWH(level.fWidth, leve
l.fHeight); | 188 const SkImageInfo info = origBitmap.info().makeWH(level.fWidth, leve
l.fHeight); |
189 // todo: if we could wrap the fCurrMip in a pixelref, then we could
just install | 189 // todo: if we could wrap the fCurrMip in a pixelref, then we could
just install |
190 // that here, and not need to explicitly track it ourselves. | 190 // that here, and not need to explicitly track it ourselves. |
191 return fResultBitmap.installPixels(info, level.fPixels, level.fRowBy
tes); | 191 return fResultBitmap.installPixels(info, level.fPixels, level.fRowBy
tes); |
192 } else { | 192 } else { |
193 // failed to extract, so release the mipmap | 193 // failed to extract, so release the mipmap |
194 fCurrMip.reset(NULL); | 194 fCurrMip.reset(nullptr); |
195 } | 195 } |
196 } | 196 } |
197 return false; | 197 return false; |
198 } | 198 } |
199 | 199 |
200 SkDefaultBitmapControllerState::SkDefaultBitmapControllerState(const SkBitmap& s
rc, | 200 SkDefaultBitmapControllerState::SkDefaultBitmapControllerState(const SkBitmap& s
rc, |
201 const SkMatrix& i
nv, | 201 const SkMatrix& i
nv, |
202 SkFilterQuality q
ual) { | 202 SkFilterQuality q
ual) { |
203 fInvMatrix = inv; | 203 fInvMatrix = inv; |
204 fQuality = qual; | 204 fQuality = qual; |
205 | 205 |
206 if (this->processHQRequest(src) || this->processMediumRequest(src)) { | 206 if (this->processHQRequest(src) || this->processMediumRequest(src)) { |
207 SkASSERT(fResultBitmap.getPixels()); | 207 SkASSERT(fResultBitmap.getPixels()); |
208 } else { | 208 } else { |
209 fResultBitmap = src; | 209 fResultBitmap = src; |
210 fResultBitmap.lockPixels(); | 210 fResultBitmap.lockPixels(); |
211 // lock may fail to give us pixels | 211 // lock may fail to give us pixels |
212 } | 212 } |
213 SkASSERT(fQuality <= kLow_SkFilterQuality); | 213 SkASSERT(fQuality <= kLow_SkFilterQuality); |
214 | 214 |
215 // fResultBitmap.getPixels() may be null, but our caller knows to check fPix
map.addr() | 215 // fResultBitmap.getPixels() may be null, but our caller knows to check fPix
map.addr() |
216 // and will destroy us if it is NULL. | 216 // and will destroy us if it is nullptr. |
217 fPixmap.reset(fResultBitmap.info(), fResultBitmap.getPixels(), fResultBitmap
.rowBytes(), | 217 fPixmap.reset(fResultBitmap.info(), fResultBitmap.getPixels(), fResultBitmap
.rowBytes(), |
218 fResultBitmap.getColorTable()); | 218 fResultBitmap.getColorTable()); |
219 } | 219 } |
220 | 220 |
221 SkBitmapController::State* SkDefaultBitmapController::onRequestBitmap(const SkBi
tmap& bm, | 221 SkBitmapController::State* SkDefaultBitmapController::onRequestBitmap(const SkBi
tmap& bm, |
222 const SkMa
trix& inverse, | 222 const SkMa
trix& inverse, |
223 SkFilterQu
ality quality, | 223 SkFilterQu
ality quality, |
224 void* stor
age, size_t size) { | 224 void* stor
age, size_t size) { |
225 return SkInPlaceNewCheck<SkDefaultBitmapControllerState>(storage, size, bm,
inverse, quality); | 225 return SkInPlaceNewCheck<SkDefaultBitmapControllerState>(storage, size, bm,
inverse, quality); |
226 } | 226 } |
227 | 227 |
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