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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
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 | 8 |
9 #include "SkImageDecoder.h" | 9 #include "SkImageDecoder.h" |
10 #include "SkBitmap.h" | 10 #include "SkBitmap.h" |
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235 // savings are more important than speed here. This also means | 235 // savings are more important than speed here. This also means |
236 // that the pixels in dst can not be reused (though there is no | 236 // that the pixels in dst can not be reused (though there is no |
237 // allocation, which was already done on src). | 237 // allocation, which was already done on src). |
238 int x = (dstX - srcX) / sampleSize; | 238 int x = (dstX - srcX) / sampleSize; |
239 int y = (dstY - srcY) / sampleSize; | 239 int y = (dstY - srcY) / sampleSize; |
240 SkIRect subset = SkIRect::MakeXYWH(x, y, w, h); | 240 SkIRect subset = SkIRect::MakeXYWH(x, y, w, h); |
241 return src->extractSubset(dst, subset); | 241 return src->extractSubset(dst, subset); |
242 } | 242 } |
243 // if the destination has no pixels then we must allocate them. | 243 // if the destination has no pixels then we must allocate them. |
244 if (dst->isNull()) { | 244 if (dst->isNull()) { |
245 dst->setConfig(src->getConfig(), w, h); | 245 dst->setConfig(src->getConfig(), w, h, 0, src->isOpaque() ? |
246 dst->setIsOpaque(src->isOpaque()); | 246 kOpaque_SkAlphaType : kPremul_SkAlphaType); |
247 | 247 |
248 if (!this->allocPixelRef(dst, NULL)) { | 248 if (!this->allocPixelRef(dst, NULL)) { |
249 SkDEBUGF(("failed to allocate pixels needed to crop the bitmap")); | 249 SkDEBUGF(("failed to allocate pixels needed to crop the bitmap")); |
250 return false; | 250 return false; |
251 } | 251 } |
252 } | 252 } |
253 // check to see if the destination is large enough to decode the desired | 253 // check to see if the destination is large enough to decode the desired |
254 // region. If this assert fails we will just draw as much of the source | 254 // region. If this assert fails we will just draw as much of the source |
255 // into the destination that we can. | 255 // into the destination that we can. |
256 if (dst->width() < w || dst->height() < h) { | 256 if (dst->width() < w || dst->height() < h) { |
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461 if (kUnknown_Format == *format) { | 461 if (kUnknown_Format == *format) { |
462 if (stream->rewind()) { | 462 if (stream->rewind()) { |
463 *format = GetStreamFormat(stream); | 463 *format = GetStreamFormat(stream); |
464 } | 464 } |
465 } | 465 } |
466 } | 466 } |
467 delete codec; | 467 delete codec; |
468 } | 468 } |
469 return success; | 469 return success; |
470 } | 470 } |
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