commit-bot@chromium.org | 6e3e422 | 2013-11-06 10:08:30 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2013 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 "Sk64.h" |
| 9 | #include "SkColorTable.h" |
| 10 | #include "SkData.h" |
| 11 | #include "SkImageDecoder.h" |
| 12 | #include "SkImagePriv.h" |
| 13 | #include "SkLazyCachingPixelRef.h" |
| 14 | #include "SkPostConfig.h" |
| 15 | |
| 16 | SkLazyCachingPixelRef::SkLazyCachingPixelRef(SkData* data, |
| 17 | SkBitmapFactory::DecodeProc proc) |
| 18 | : fDecodeProc(proc) { |
| 19 | if (NULL == data) { |
| 20 | fData = SkData::NewEmpty(); |
| 21 | } else { |
| 22 | fData = data; |
| 23 | fData->ref(); |
| 24 | } |
| 25 | if (NULL == fDecodeProc) { // use a reasonable default. |
| 26 | fDecodeProc = SkImageDecoder::DecodeMemoryToTarget; |
| 27 | } |
| 28 | this->setImmutable(); |
| 29 | } |
| 30 | |
| 31 | SkLazyCachingPixelRef::~SkLazyCachingPixelRef() { |
| 32 | SkASSERT(fData != NULL); |
| 33 | fData->unref(); |
| 34 | } |
| 35 | |
| 36 | bool SkLazyCachingPixelRef::onDecodeInfo(SkImageInfo* info) { |
| 37 | SkASSERT(info); |
| 38 | return fDecodeProc(fData->data(), fData->size(), info, NULL); |
| 39 | } |
| 40 | |
| 41 | bool SkLazyCachingPixelRef::onDecodePixels(const SkImageInfo& passedInfo, |
| 42 | void* pixels, size_t rowBytes) { |
| 43 | SkASSERT(pixels); |
| 44 | SkImageInfo info; |
| 45 | if (!this->getInfo(&info)) { |
| 46 | return false; |
| 47 | } |
| 48 | if (passedInfo != info) { |
| 49 | return false; // This implementation can not handle this case. |
| 50 | } |
| 51 | SkBitmapFactory::Target target = {pixels, rowBytes}; |
| 52 | return fDecodeProc(fData->data(), fData->size(), &info, &target); |
| 53 | } |
| 54 | |
| 55 | bool SkLazyCachingPixelRef::Install(SkBitmapFactory::DecodeProc proc, |
| 56 | SkData* data, |
| 57 | SkBitmap* destination) { |
| 58 | SkAutoTUnref<SkLazyCachingPixelRef> ref( |
| 59 | SkNEW_ARGS(SkLazyCachingPixelRef, (data, proc))); |
| 60 | return ref->configure(destination) && destination->setPixelRef(ref); |
| 61 | } |
| 62 | |