2d970b5128
BUG=skia: R=halcanary@google.com, scroggo@google.com, djsollen@google.com Author: reed@google.com Review URL: https://codereview.chromium.org/295243006 git-svn-id: http://skia.googlecode.com/svn/trunk@14889 2bbb7eff-a529-9590-31e7-b0007b416f81
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "LazyDecodeBitmap.h"
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#include "SkData.h"
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#include "SkDecodingImageGenerator.h"
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#include "SkDiscardableMemoryPool.h"
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#include "SkImageGeneratorPriv.h"
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#include "SkForceLinking.h"
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#include "SkCommandLineFlags.h"
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__SK_FORCE_IMAGE_DECODER_LINKING;
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DEFINE_bool(useVolatileCache, false, "Use a volatile cache for deferred image decoding pixels. "
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"Only meaningful if --deferImageDecoding is set to true and the platform has an "
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"implementation.");
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// Fits SkPicture::InstallPixelRefProc call signature.
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// Used in SkPicturePlayback::CreateFromStream
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bool sk_tools::LazyDecodeBitmap(const void* src,
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size_t length,
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SkBitmap* dst) {
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SkAutoDataUnref data(SkData::NewWithCopy(src, length));
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if (NULL == data.get()) {
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return false;
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}
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SkAutoTDelete<SkImageGenerator> gen(
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SkDecodingImageGenerator::Create(
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data, SkDecodingImageGenerator::Options()));
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SkImageInfo info;
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if ((NULL == gen.get()) || !gen->getInfo(&info)) {
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return false;
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}
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SkDiscardableMemory::Factory* pool = NULL;
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if ((!FLAGS_useVolatileCache) || (info.fWidth * info.fHeight < 32 * 1024)) {
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// how to do switching with SkDiscardableMemory.
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pool = SkGetGlobalDiscardableMemoryPool();
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// Only meaningful if platform has a default discardable
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// memory implementation that differs from the global DM pool.
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}
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return SkInstallDiscardablePixelRef(gen.detach(), dst, pool);
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}
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