kjlubick | 1de415f | 2016-02-10 11:25:07 -0800 | [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 "LazyDecodeBitmap.h" |
| 9 | |
| 10 | #include "SkData.h" |
| 11 | #include "SkDiscardableMemoryPool.h" |
| 12 | #include "SkImageGeneratorPriv.h" |
| 13 | #include "SkForceLinking.h" |
| 14 | |
| 15 | #include "SkCommandLineFlags.h" |
| 16 | |
| 17 | __SK_FORCE_IMAGE_DECODER_LINKING; |
| 18 | |
| 19 | DEFINE_bool(useVolatileCache, false, "Use a volatile cache for deferred image decoding pixels. " |
| 20 | "Only meaningful if --deferImageDecoding is set to true and the platform has an " |
| 21 | "implementation."); |
| 22 | |
| 23 | // Fits SkPicture::InstallPixelRefProc call signature. |
| 24 | // Used in SkPictureData::CreateFromStream |
| 25 | bool sk_tools::LazyDecodeBitmap(const void* src, size_t length, SkBitmap* dst) { |
| 26 | SkAutoDataUnref data(SkData::NewWithCopy(src, length)); |
| 27 | if (nullptr == data.get()) { |
| 28 | return false; |
| 29 | } |
| 30 | |
| 31 | SkAutoTDelete<SkImageGenerator> gen(SkImageGenerator::NewFromEncoded(data)); |
| 32 | if (nullptr == gen.get()) { |
| 33 | return false; |
| 34 | } |
| 35 | const SkImageInfo info = gen->getInfo(); |
| 36 | SkDiscardableMemory::Factory* pool = nullptr; |
| 37 | if ((!FLAGS_useVolatileCache) || (info.width() * info.height() < 32 * 1024)) { |
| 38 | // how to do switching with SkDiscardableMemory. |
| 39 | pool = SkGetGlobalDiscardableMemoryPool(); |
| 40 | // Only meaningful if platform has a default discardable |
| 41 | // memory implementation that differs from the global DM pool. |
| 42 | } |
| 43 | return SkDEPRECATED_InstallDiscardablePixelRef(gen.detach(), nullptr, dst, pool); |
| 44 | } |