Rename SkCodecTools.h to SkBitmapRegionDecoderPriv.h
Move BRD code to its own directory in tools. This
allows us to not need to expose the entire tools
directory in Android.
BUG=skia:
Review URL: https://codereview.chromium.org/1417393004
We no longer need to worry about namespace
conflicts SkBitmapRegionDecoder in Android (which
we are replacing).
Additionally, the static Create() function does not
need to repeat the name BitmapRegionDecoder.
BUG=skia:
Review URL: https://codereview.chromium.org/1415243007
Remove double negative.
Also, change another error message to be slightly (meaningfully)
different so I can find the right one based on the log.
Review URL: https://codereview.chromium.org/1424083004
This involves disabling webps for kCanvas_Strategy.
We have not yet implemented webp subset decodes for this
strategy.
BUG=skia:4521
Review URL: https://codereview.chromium.org/1405273004
The result SkBitmap, the pixel allocator, and the alpha
preference need to be communicated from the client to
the region decoder.
BUG=skia:
Review URL: https://codereview.chromium.org/1418093006
Turns out bitmap.eraseColor() does nothing if the bitmap
is kIndex8. We need a more reliable way to initialize
all of the pixels that we look at in Gold.
The input SkCanvas* is always zero initialized, so let's
only draw pixels to the canvas if we have initialized them.
BUG=skia:
Review URL: https://codereview.chromium.org/1418913002
We will implement this API using SkCodecs.
SkAndroidCodecs will be used to implement the
BitmapRegionDecoder Java API (and possibly
BitmapFactory).
BUG=skia:
Review URL: https://codereview.chromium.org/1406223002
This CL allows the SkScanlineDecoder to decode partial
scanlines.
This is a first step in efficiently implementing subsetting
in SkScaledCodec.
BUG=skia:4209
Review URL: https://codereview.chromium.org/1390213002
Use SkCodecPrintf instead of SkDebugf.
Check if the conversion is possible rather than starting many decodes
that will certainly fail.
Small refactor to code that deals with subsets that fall outside
of the image.
BUG=skia:
Review URL: https://codereview.chromium.org/1395383002
Rather than implementing some sort of "fill" in every
SkCodec subclass for incomplete images, let's make the
parent class handle this situation.
This includes an API change to SkCodec.h
SkCodec::getScanlines() now returns the number of lines it
read successfully, rather than an SkCodec::Result enum.
getScanlines() most often fails on an incomplete input, in
which case it is useful to know how many lines were
successfully decoded - this provides more information than
kIncomplete vs kSuccess. We do lose information when the
API is used improperly, as we are no longer able to return
kInvalidParameter or kScanlineNotStarted.
Known Issues:
Does not work for incomplete fFrameIsSubset gifs.
Does not work for incomplete icos.
BUG=skia:
Review URL: https://codereview.chromium.org/1332053002
Looking in Gold, I see some ICO images that only show the upper left
corner of the originals. It is happening because we use different ways
of deciding what the dimensions are:
In CodecSrc::size(), we use an SkScaledCodec to get the dimensions,
even when fMode is not kScaledCodec_Mode.
In CodecSrc::draw(), we only use SkScaledCodec in kScaledCodec_Mode.
My recent CL to combine SkScanlineDecoder with SkCodec revealed this
bug, because now SkScaledCodec::NewFromStream will succeed on ICO.
(Previously, it failed because we do not yet have a scanline decoder
for ICO (skbug.com/4404). Now that they are combined, we would need
to specially flag ICO to stop returning an SkScaledCodec.)
Switch size() to use the correct type of codec.
Review URL: https://codereview.chromium.org/1373253004
Benefits:
- This mimics other decoding APIs (including the ones SkCodec relies
on, e.g. a png_struct, which can be used to decode an entire image or
one line at a time).
- It allows a client to ask us to do what we can do efficiently - i.e.
start from encoded data and either decode the whole thing or scanlines.
- It removes the duplicate methods which appeared in both SkCodec and
SkScanlineDecoder (some of which, e.g. in SkJpegScanlineDecoder, just
call fCodec->sameMethod()).
- It simplifies moving more checks into the base class (e.g. the
examples in skbug.com/4284).
BUG=skia:4175
BUG=skia:4284
=====================================================================
SkScanlineDecoder.h/.cpp:
Removed.
SkCodec.h/.cpp:
Add methods, enums, and variables which were previously in
SkScanlineDecoder.
Default fCurrScanline to -1, as a sentinel that start has not been
called.
General changes:
Convert SkScanlineDecoders to SkCodecs.
General changes in SkCodec subclasses:
Merge SkScanlineDecoder implementation into SkCodec. Most (all?) owned
an SkCodec, so they now call this-> instead of fCodec->.
SkBmpCodec.h/.cpp:
Replace the unused rowOrder method with an override for
onGetScanlineOrder.
Make getDstRow const, since it is called by onGetY, which is const.
SkCodec_libpng.h/.cpp:
Make SkPngCodec an abstract class, with two subclasses which handle
scanline decoding separately (they share code for decoding the entire
image). Reimplement onReallyHasAlpha so that it can return the most
recent result (e.g. after a scanline decode which only decoded part
of the image) or a better answer (e.g. if the whole image is known to
be opaque).
Compute fNumberPasses early, so we know which subclass to instantiate.
Make SkPngInterlaceScanlineDecoder use the base class' fCurrScanline
rather than a separate variable.
CodexTest.cpp:
Add tests for the state changes in SkCodec (need to call start before
decoding scanlines; calling getPixels means that start will need to
be called again before decoding more scanlines).
Add a test which decodes in stripes, currently only used for an
interlaced PNG.
TODO: Add tests for onReallyHasAlpha.
Review URL: https://codereview.chromium.org/1365313002
- use C++11 features ({} init, move constructors) to eliminate the need
for explicit constructors
- collapse RECORD0...RECORD8 into just one RECORD macro
- explicitly tag record types instead of using member detectors.
Removing member detectors makes this code significantly less fragile.
This exposes a few places where we didn't really think through what to do
with SkDrawable. I've marked them TODO for now.
BUG=skia:
Review URL: https://codereview.chromium.org/1360943003
Motivation: I want too finalize this API before working on the more
complex problem of adding XMP metadata for PDF/A.
BUG=skia:3110
Review URL: https://codereview.chromium.org/1359943003
SkBitmapRegionDecoderInterface provides an interface
for multiple implementations of Android's
BitmapRegionDecoder.
We already have correctness tests in DM that will enable us
to compare the quality of our various BRD implementations.
We also need these performance tests to compare the speed
of our various implementations.
BUG=skia:4357
Review URL: https://codereview.chromium.org/1344993003
*** Add CodecMode and ScaledCodecMode (in place of
NormalMode), so now we test SkCodec's getPixels() and
SkScaledCodec's getPixels()
*** Don't attempt to test scanline and codec modes using
the dimensions that were recommended for SkScaledCodec.
*** Change tags so that each scale gets its own output
folder.
TODO: Make ScanlineMode and ScanlineSubsetMode support
kOutOfOrder etc. I think this belongs with the gif CL -
I don't want to add test modes that we don't run yet.
BUG=skia:4202
BUG=skia:4238
Review URL: https://codereview.chromium.org/1327433003
Redesigns SkScanlineDecoder.h to indicate the ordering
in which the scanlines are provided
Refactors SkSwizzler::Fill() to include the zeroInit check
and to actually be correct.
BUG=skia:3257
BUG=skia:4198
Review URL: https://codereview.chromium.org/1287423002
We don't want to test small images on Gold because they are
not interested to look at. Instead, I wrote a unit test to
verify that scaling small images does not cause crashes.
BUG=skia:
Review URL: https://codereview.chromium.org/1287863004
Prior to this CL, if a client wanted to decode scanlines, they had to
create an SkCodec in order to get an SkScanlineDecoder. This introduces
complications if input data is not easily shared between the two
objects.
Instead, add methods to SkScanlineDecoder for creating a new one from
input data, and remove the creation functions from SkCodec.
Update DM and tests.
Review URL: https://codereview.chromium.org/1267583002
