tree 413da16430a6a58301ccbce034b8dad19a3a4712
parent 350b4d50ea4a9a151d8049ad1d3f411bb2f2602f
author scroggo@google.com <scroggo@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 1375369422 +0000
committer scroggo@google.com <scroggo@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 1375369422 +0000

Fixes for JPEG subset decoding.

Ensure that the stream passed to JPEG for subset decoding is
neither deleted before it is no longer needed nor deleted an
extra time.

src/images/SkJpegUtility.h:
src/images/SkJpegUtility.cpp:
Always ref and unref the stream provided to skjpeg_source_mgr.
Add some comments explaining how skjpeg_source_mgr's members
handle ownership.
Fix a warning comparing signed and unsigned numbers, converting
to size_t which is more appropriate for measuring bytes.
Remove dead code referring to fMemoryBase and fMemoryBaseSize,
which are never used.

src/images/SkImageDecoder_libjpeg.cpp:
Call the new constructor for skjpeg_source_mgr, which no longer
takes a boolean to determine ownership.

include/images/SkBitmapRegionDecoder.h
src/images/SkBitmapRegionDecoder.cpp:
This small shim has been removed, since it is not needed to use
Skia's image decoders. Its functionality will be folded into
Android.

Required for the merge to Android.

R=djsollen@google.com

Review URL: https://codereview.chromium.org/21561002

git-svn-id: http://skia.googlecode.com/svn/trunk@10483 2bbb7eff-a529-9590-31e7-b0007b416f81