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
Passing &SkGoodHash to SkTHashMap and SkTHashSet doesn't guarantee that it's actually instantiated. Using a functor does.
BUG=skia:
Review URL: https://codereview.chromium.org/1405053002
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
drawImage calls now properly embeds the original jpeg.
NOTE: drawBitmap*() calls no longer embed JPEG files when
possible (this is in advance of eliminating bitmaps backed
by encoded data). Chromium has already moved from
drawBitmap to drawImage.
Comparisons:
control:
total PDF drawImage/drawBitmap calls: 8010
total PDF jpeg images: 0
total PDF regular images: 3581
experiament:
total PDF drawImage/drawBitmap calls: 8014
total PDF jpeg images: 271
total PDF regular images: 3311
total PDF regular images: 3582 (271 + 3311)
When comparing rendered output there were perceptual
differences in the following four GMs: colorcube, emboss,
colormatrix, and tablecolorfilter. All of these differences
were improvements (that is, closer to the 8888 rendering)
due fixing a bug with colorfilters and forgetting to call
notifyPixelsChanged.
No SKPs had perceptual differences.
Total PDF size dropped from 133964 kB to 126276 kB, a 5.7%
improvement (mostly due to restoring use of JPG images in
SKPs).
BUG=skia:4370
Review URL: https://codereview.chromium.org/1372783003
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
Right now we have a bug in Gold where some images are labeled
_0.167 and others are labeled _0.166. They are all 1/6
scales and should be labeled the same way and compared.
The fix involves changing 0.166 to 0.167 in the list of
scales that we test on, but SkScaledCodec does not scale
to 0.167 as I expected.
SkScaledCodec converts 0.167 to sampleSize = 5.999 and then
casts to sampleSize = 5. I would argue that we should do
a true round, so 0.167 represents a sampleSize of 6.
In general, this CL change onGetScaledDimensions so that
we now round desiredScale to the nearest sampleSize.
BUG=skia:
Review URL: https://codereview.chromium.org/1356923002
BitmapRegionSampler (uses SkImageDecoder) will often scale
to a power of 2 regardless of the sampleSize requested.
This is skbug.com/4319.
Consider a 60x60 image.
To decode a subset with sample size 3, we might ask for the
following.
[x, y, w, h] = [-15, -15, 30, 30]
sampleSize = 3
Since w = 30 and h = 30, this should give us a 10x10
result. Only the bottom right 5x5 quadrant of this 10x10
subset will actually be in the image. We should get a 5
pixel border on the top and left because we ask for 15
extra pixels on the top and left.
Unfortunately, SkImageDecoder will take our requested
sample size of 3, and then decide to use a sample size of
2. Not only will it scale the image by 2, but it will also
scale the border by 2. So while we are expecting pixel
data to begin at offset (5, 5) of the result bitmap, it
actually begins at offset (7, 7). Making things worse,
the pixels between (5, 5) and (7, 7) are uninitialized,
causing problems on Gold.
Options for fixing this include:
(1) Not testing decodes with a border.
(2) Changing the test to check the size of the output
bitmap.
(3) Disable the tests.
I think it's best to just disable these tests. We know
they don't work, so why do we need to see the results on
Gold?
BUG=skia:4319
Review URL: https://codereview.chromium.org/1313233007
These extra outputs were caused by recent changes to
push_codec_srcs.
https://codereview.chromium.org/1327433003/
*** First, I would argue that we do not want to test
"native" modes (ex: codec, scanline, etc) to scales
that require sampling (ex: 0.1, 0.2, etc). Right now,
we are trying to scale jpegs to 0.1, settling for 0.125
as the closest option, and then trying to compare the
0.125 scaled image to the actual 0.1 scaled image in
Gold.
*** Second, I messed up and caused our test setup to
try to decode to kIndex8 and kGray8 "always" instead
of only when it is recommended. The bad effect of this
happens because we can decode jpegs to kGray8 even if
they are color images. Right now in Gold, we have a
bunch of untriaged gray versions of color images.
The second issue would have been caught if we signaled
a fatal failure for invalid conversions. Maybe we should
look into this now that 565 is supported everywhere?
BUG=skia:
Review URL: https://codereview.chromium.org/1314163007
*** 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
Unfortunately, immintrin.h (which is also included by SkTypes)
includes xmmintrin.h which includes mm_malloc.h which includes
stdlib.h for malloc even though, from the implementation, it is
difficult to see why.
Fortunately, arm_neon.h does not seem to be involved in such
shenanigans, so building for Android will keep things sane.
TBR=reed@google.com
Doesn't change Skia API, just moves an include.
Review URL: https://codereview.chromium.org/1313203003
I suspect we might be doing some funky /n -> /r/n translations without 'b'.
This kills the PNG.
BUG=skia:
NOTREECHECKS=true
Review URL: https://codereview.chromium.org/1303063008
Reason for revert:
derek + Test-Win8-MSVC-ShuttleB-CPU-AVX2-x86_64-Debug
Original issue's description:
> Have DM manually encode its .png outputs.
>
> This eliminates some variability on various axes: different PNG encoders, different libpng versions, different formats (RGB, indexed), different unpremultiplication, different sRGB tags.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/3cc0dfffb70c0bd08ed8899efcd2e98da86a6ec7TBR=stephana@google.com,msarett@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:
Review URL: https://codereview.chromium.org/1297383002
This eliminates some variability on various axes: different PNG encoders, different libpng versions, different formats (RGB, indexed), different unpremultiplication, different sRGB tags.
BUG=skia:
Review URL: https://codereview.chromium.org/1304443002
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
