NEW 104302
JPEGImageDecoder should use SharedBuffer::getSomeData() instead of data() 
https://bugs.webkit.org/show_bug.cgi?id=104302
Summary JPEGImageDecoder should use SharedBuffer::getSomeData() instead of data()
Hin-Chung Lam
Reported 2012-12-06 14:15:38 PST
JPEGImageDecoder calls data() to consolidate the entire buffer into one piece. This involves memcpys and can possibly avoided by using getSomeData().
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noel gordon
Comment 1 2013-04-15 08:04:47 PDT
Noticed in the animated webp patch bug 113124, that a member variable m_demux (a webp demux object needed for decoding) is used to read the SharedBuffer::data(). The m_demux object internally maintains pointers into that data(). That's probably ok for a single pass through decode(). However, for progessive decoding of large webp images, decode() is called multiple times. Any new calls SharedBuffer::data() in any decode() might cause that data() to be consolidated if I'm reading this bug correctly?
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