Index: third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp |
diff --git a/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp b/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp |
index a9621b5a1058f9cd5e2404cb48dfd82615ab593d..f6a882bef2a4a717aa428764f5215d73da629411 100644 |
--- a/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp |
+++ b/third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.cpp |
@@ -213,6 +213,8 @@ void DeferredImageDecoder::activateLazyDecoding() |
m_hasColorProfile = m_actualDecoder->hasColorProfile(); |
const bool isSingleFrame = m_actualDecoder->repetitionCount() == cAnimationNone || (m_allDataReceived && m_actualDecoder->frameCount() == 1u); |
m_frameGenerator = ImageFrameGenerator::create(SkISize::Make(m_actualDecoder->decodedSize().width(), m_actualDecoder->decodedSize().height()), m_data, m_allDataReceived, !isSingleFrame); |
+ // GIF images support Index8 decoding: other decoders do not. |
+ m_frameGenerator->setDecoderCanDecodeToIndex8(m_filenameExtension == "gif"); |
} |
void DeferredImageDecoder::prepareLazyDecodedFrames() |
@@ -260,8 +262,11 @@ PassRefPtr<SkImage> DeferredImageDecoder::createImage(size_t index, bool knownTo |
ASSERT(decodedSize.width() > 0); |
ASSERT(decodedSize.height() > 0); |
- const SkImageInfo info = SkImageInfo::MakeN32(decodedSize.width(), decodedSize.height(), |
- knownToBeOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType); |
+ const SkImageInfo info = m_frameGenerator->canDecodeTo(index, kIndex_8_SkColorType) |
+ ? SkImageInfo::Make(decodedSize.width(), decodedSize.height(), kIndex_8_SkColorType, |
+ knownToBeOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType) |
+ : SkImageInfo::MakeN32(decodedSize.width(), decodedSize.height(), |
+ knownToBeOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType); |
DecodingImageGenerator* generator = new DecodingImageGenerator(m_frameGenerator, info, index); |
RefPtr<SkImage> image = adoptRef(SkImage::NewFromGenerator(generator)); |