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27 #include "platform/graphics/LazyDecodingPixelRef.h"
30 #include "platform/TraceEvent.h"
31 #include "platform/graphics/ImageDecodingStore.h"
32 #include "platform/graphics/ImageFrameGenerator.h"
36 LazyDecodingPixelRef::LazyDecodingPixelRef(const SkImageInfo& info, PassRefPtr<ImageFrameGenerator> frameGenerator, size_t index)
38 , m_frameGenerator(frameGenerator)
40 , m_lockedImageResource(0)
41 , m_objectTracker(this)
45 LazyDecodingPixelRef::~LazyDecodingPixelRef()
49 SkData* LazyDecodingPixelRef::onRefEncodedData()
51 // If the image has been clipped or scaled, do not return the original encoded data, since
52 // on playback it will not be known how the clipping/scaling was done.
53 RefPtr<SharedBuffer> buffer = nullptr;
54 bool allDataReceived = false;
55 m_frameGenerator->copyData(&buffer, &allDataReceived);
56 if (buffer && allDataReceived) {
57 SkData* skdata = SkData::NewWithCopy((void*)buffer->data(), buffer->size());
63 bool LazyDecodingPixelRef::onNewLockPixels(LockRec* rec)
65 TRACE_EVENT_ASYNC_BEGIN0("blink", "LazyDecodingPixelRef::onNewLockPixels", this);
67 ASSERT(!m_lockedImageResource);
69 SkISize size = m_frameGenerator->getFullSize();
70 if (!ImageDecodingStore::instance()->lockCache(m_frameGenerator.get(), size, m_frameIndex, &m_lockedImageResource))
71 m_lockedImageResource = 0;
73 // Use ImageFrameGenerator to generate the image. It will lock the cache
75 if (!m_lockedImageResource) {
76 PlatformInstrumentation::willDecodeLazyPixelRef(getGenerationID());
77 m_lockedImageResource = m_frameGenerator->decodeAndScale(size, m_frameIndex);
78 PlatformInstrumentation::didDecodeLazyPixelRef();
80 if (!m_lockedImageResource)
83 ASSERT(!m_lockedImageResource->bitmap().isNull());
84 ASSERT(m_lockedImageResource->scaledSize() == size);
85 rec->fPixels = m_lockedImageResource->bitmap().getAddr(0, 0);
87 rec->fRowBytes = m_lockedImageResource->bitmap().rowBytes();
91 void LazyDecodingPixelRef::onUnlockPixels()
93 if (m_lockedImageResource) {
94 ImageDecodingStore::instance()->unlockCache(m_frameGenerator.get(), m_lockedImageResource);
95 m_lockedImageResource = 0;
98 TRACE_EVENT_ASYNC_END0("blink", "LazyDecodingPixelRef::lockPixels", this);
101 bool LazyDecodingPixelRef::onLockPixelsAreWritable() const
106 bool LazyDecodingPixelRef::MaybeDecoded()
108 return ImageDecodingStore::instance()->isCached(m_frameGenerator.get(), m_frameGenerator->getFullSize(), m_frameIndex);
111 bool LazyDecodingPixelRef::PrepareToDecode(const LazyPixelRef::PrepareParams& params)
117 void LazyDecodingPixelRef::Decode()