tree 123b2ad26b902a119f2192e6c9d7cb2072fa295e
parent 0a3cac8a90e4aed24555815a43fafd53aed009ee
author scroggo <scroggo@google.com> 1444405259 -0700
committer Commit bot <commit-bot@chromium.org> 1444405259 -0700

Focus SkScaledCodec on BitmapRegionDecoder

The primary goal of SkScaledCodec is to replace the current
implementation of BitmapRegionDecoder, which depends on modified
versions of libjpeg and libpng, with an implementation that uses
standard versions of the libaries. Since BitmapRegionDecoder only
supports PNG, WEBP and JPEG, limit SkScaledCodec to those classes.
We will focus on those three until we complete this primary goal.
Then we can continue to make SkScaledCodec work for other formats.

Fix some bugs in SkScaledCodec::NewFromStream:
- Handle a NULL input stream properly
- Ensure that the input stream is deleted as expected on bad data

Add tests for these error cases.

BUG=skia:4428

Review URL: https://codereview.chromium.org/1389053002