Commit Graph

2 Commits

Author SHA1 Message Date
scroggo@google.com
f8d7d27313 Create SkLazyPixelRef which performs lazy decoding.
The new pixel ref behaves similarly to SkImageRef, with some key differences:
It does not depend on the images project.
It requires an SkImageCache, which handles allocation and caching of the pixel
memory.
It takes a function signature for decoding which decodes into already allocated
pixel memory rather than into an SkBitmap.

Add two implementations of SkImageCache: SkLruImageCache and SkAshmemImageCache.

Replace SkSerializationHelpers::DecodeBitmap with SkPicture::InstallPixelRefProc,
and update sites that referenced it.

SkBitmapFactory now sets the pixel ref to a new object of the new
class SkLazyPixelRef, provided it has an SkImageCache for caching.

Provide an option to do lazy decodes in render_pictures and bench_pictures.

SkPicture:
Eliminate the default parameters in the constructor.
If a proc for decoding bitmaps is installed, use it to decode any encoded
data in subpictures.
When parsing deserializing subpictures, check for success.
When serializing subpictures, pass the picture's bitmap encoder to the
subpicture's call to serialize.

Update BitmapFactoryTest to test its new behavior.

BUG=https://code.google.com/p/skia/issues/detail?id=1008
BUG=https://code.google.com/p/skia/issues/detail?id=1009

Review URL: https://codereview.appspot.com/7060052

git-svn-id: http://skia.googlecode.com/svn/trunk@7835 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-02-22 21:38:35 +00:00
scroggo@google.com
9f686f3639 Create a factory to decode an SkBitmap from an SkData.
Add a test and a GM for the factory, and a PNG file for it to decode.
The PNG file is copyright-free, obtained from
http://openclipart.org/detail/29213/paper-plane-by-ddoo

In cmykjpeg, do not attempt to decode in the constructor, since it
currently crashes on Mac (if you provide the correct resource path).
Even when we fix this crash there is no need to do it in the
constructor, since we create all of the gms in order to
get their names (to determine whether to run them).

Review URL: https://codereview.appspot.com/6847122

git-svn-id: http://skia.googlecode.com/svn/trunk@6618 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-11-29 21:05:37 +00:00