Commit Graph

130 Commits

Author SHA1 Message Date
Leon Scroggins III
fe3da02e76 Add a method to convert SkCodec::Result to a string
Bug: b/63909536
Change-Id: Ic91e3401359f80eadd9d1cd79aa8ef642c60b0fc
Reviewed-on: https://skia-review.googlesource.com/94781
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
2018-01-16 17:17:58 +00:00
Leon Scroggins III
c8037dc5ed Reland "Hide SkEncodedInfo"
This partially reverts commit
1793e7bb46.

Hide SkEncodedInfo

Bug: skia:7353
Bug: skia:6839

This contains information that is not necessary for clients to know. The
Color enum tells the number of components in the input, but this is only
interesting internally (to the SkSwizzler).

Similarly, the Alpha enum differs from SkAlphaType in that it has
kBinary instead of kPremul. This is useful information only internally
for determining whether the SkColorSpaceXform needs to premultiply.

The bitsPerComponent is potentially useful for a client; Android (in
SkAndroidCodec) uses it to determine the SkColorType. Rather than
exposing bitsPerComponent, make SkAndroidCodec a friend so it can
access the SkEncodedInfo. A future change will change SkCodec to
recommend F16 for bitsPerComponent > 8, but that will be more involved;
it was the reason for the revert of this CL.

Switch conversionSupported to use an SkColorType, which is enough info.

Replace the SkEncodedInfo::Alpha field on SkCodec::FrameInfo with an
SkAlphaType.

SkCodec still needs an SkEncodedInfo, so move its header (which is
already not SK_API) to include/private.

TBR=mtklein@chromium.org,reed@google.com
Change-Id: I928b1f55317602cb37d29da63b53026c8d139cee
Reviewed-on: https://skia-review.googlesource.com/80860
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-12-05 19:28:08 +00:00
Leon Scroggins
1793e7bb46 Revert "Hide SkEncodedInfo"
This reverts commit c6f7a4ffa9.

Reason for revert: Causing differences in Gold, stemming from the fact that this changes the recommended SkImageInfo for 16 bits-per-component PNG from N32 to F16.
- an F16 bitmap already png-encodes to a 16 bits-per-component PNG, but it does not encode a linear colorspace (possibly a bug?). when we decode this PNG using getInfo(), it fails because it has an F16 color type and non-linear colorspace. (In the encode-srgb-png gm, this results in blank results for F16.) We could correct this on the encoder side, but it seems possible that a 16 bits-per-component PNG could be encoded with a different color space. In that case, we'd want SkCodec to recommend F16/SRGBLinear, but I think we'd want the SkCodec to store the encoded SkColorSpace so that we can Xform between the two. Currently SkCodec only stores one color space, so that will require a refactor.
- When decoding 16-bits-per-component PNGs, we are now decoding them to F16. This shows differences in Gold. The srgb/gpu results now look more like F16. I think this is fine.

Original change's description:
> Hide SkEncodedInfo
> 
> Bug: skia:7353
> Bug: skia:6839
> 
> This contains information that is not necessary for clients to know. The
> Color enum tells the number of components in the input, but this is only
> interesting internally (to the SkSwizzler).
> 
> Similarly, the Alpha enum differs from SkAlphaType in that it has
> kBinary instead of kPremul. This is useful information only internally
> for determining whether the SkColorSpaceXform needs to premultiply.
> 
> The bitsPerComponent is potentially useful for a client; Android (in
> SkAndroidCodec) uses it to determine the SkColorType. Rather than
> exposing bitsPerComponent, use it to make the same decision that Android
> would have made - 16 bits per component means to set the info to F16. Add
> a test that computeOutputColorType behaves as expected.
> 
> Switch conversionSupported to use an SkColorType, which is enough info.
> 
> Replace the SkEncodedInfo::Alpha field on SkCodec::FrameInfo with an
> SkAlphaType.
> 
> SkCodec still needs an SkEncodedInfo, so move its header (which is
> already not SK_API) to include/private.
> 
> Change-Id: Ie2cf11339bf999ebfd4390c0f448f7edd6feabda
> Reviewed-on: https://skia-review.googlesource.com/79260
> Reviewed-by: Mike Reed <reed@google.com>
> Reviewed-by: Mike Klein <mtklein@chromium.org>
> Commit-Queue: Leon Scroggins <scroggo@google.com>

TBR=mtklein@chromium.org,scroggo@google.com,reed@google.com

Change-Id: I0c5dd1461e1b70d1e55349a8e7ee6b029c3f556e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7353, skia:6839
Reviewed-on: https://skia-review.googlesource.com/80660
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-12-05 15:38:22 +00:00
Leon Scroggins III
c6f7a4ffa9 Hide SkEncodedInfo
Bug: skia:7353
Bug: skia:6839

This contains information that is not necessary for clients to know. The
Color enum tells the number of components in the input, but this is only
interesting internally (to the SkSwizzler).

Similarly, the Alpha enum differs from SkAlphaType in that it has
kBinary instead of kPremul. This is useful information only internally
for determining whether the SkColorSpaceXform needs to premultiply.

The bitsPerComponent is potentially useful for a client; Android (in
SkAndroidCodec) uses it to determine the SkColorType. Rather than
exposing bitsPerComponent, use it to make the same decision that Android
would have made - 16 bits per component means to set the info to F16. Add
a test that computeOutputColorType behaves as expected.

Switch conversionSupported to use an SkColorType, which is enough info.

Replace the SkEncodedInfo::Alpha field on SkCodec::FrameInfo with an
SkAlphaType.

SkCodec still needs an SkEncodedInfo, so move its header (which is
already not SK_API) to include/private.

Change-Id: Ie2cf11339bf999ebfd4390c0f448f7edd6feabda
Reviewed-on: https://skia-review.googlesource.com/79260
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-12-05 00:52:42 +00:00
Leon Scroggins III
b6ab10f34b Move SkCodec::Origin into its own file
It is now used by SkPixmap and will soon be in SkJpegEncoder. No need
for those to depend on SkCodec.

Bug: 768878
TBR=reed@google.com
(reed@ already approved the API change in
https://skia-review.googlesource.com/60721)
Change-Id: If1a6e1d5b60a7a3d8c97818e15a48d28ba804668
Reviewed-on: https://skia-review.googlesource.com/61680
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-10-18 19:08:16 +00:00
Ben Wagner
021e5c7016 Revert "Add an Option for orientation on JPEG encodes"
This reverts commit 5411a60e0d.

Reason for revert: ASAN and Coverage failing: https://chromium-swarm.appspot.com/task?id=394978f3b7d44610
Flutter_Android failing.

Original change's description:
> Add an Option for orientation on JPEG encodes
> 
> Move Origin to its own header so that SkPixmap and SkJpegEncoder need
> not depend on SkCodec.
> 
> Add libexif, which is already used by Android, and use it to write the
> orientation. Write a makefile based on the Android.bp in Android, minus
> warnings. (libexif has an LGPL license.)
> 
> Add a test that verifies all the orientations work.
> 
> Optionally enable writing the orientation (and therefore including
> libexif). Chromium does not currently need it, and Android does not
> expose an API that would allow using it. Disable on Windows, where we
> still have build errors to fix.
> 
> Bug: skia:7138
> Change-Id: Iaeff44c36aebe0e639666979dc00e1b7594bbeb1
> Reviewed-on: https://skia-review.googlesource.com/60721
> Commit-Queue: Leon Scroggins <scroggo@google.com>
> Reviewed-by: Mike Klein <mtklein@chromium.org>
> Reviewed-by: Mike Reed <reed@google.com>

TBR=mtklein@chromium.org,mtklein@google.com,scroggo@google.com,reed@google.com

Change-Id: I05b7ae8d1c5bbd1de1642d9ef024943500256273
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7138
Reviewed-on: https://skia-review.googlesource.com/61620
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
2017-10-18 18:09:47 +00:00
Leon Scroggins III
5411a60e0d Add an Option for orientation on JPEG encodes
Move Origin to its own header so that SkPixmap and SkJpegEncoder need
not depend on SkCodec.

Add libexif, which is already used by Android, and use it to write the
orientation. Write a makefile based on the Android.bp in Android, minus
warnings. (libexif has an LGPL license.)

Add a test that verifies all the orientations work.

Optionally enable writing the orientation (and therefore including
libexif). Chromium does not currently need it, and Android does not
expose an API that would allow using it. Disable on Windows, where we
still have build errors to fix.

Bug: skia:7138
Change-Id: Iaeff44c36aebe0e639666979dc00e1b7594bbeb1
Reviewed-on: https://skia-review.googlesource.com/60721
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
2017-10-18 17:38:15 +00:00
Mike Reed
4379869461 Revert[4] "apply codec origin in generator"
This reverts commit dd340146f1.

Reason for revert: ios gn file fixed

Original change's description:
> Revert "Revert "Revert "apply codec origin in generator"""
> 
> This reverts commit 82269abfec.
> 
> Reason for revert: ios build needs include path for SkCodec.h
> 
> Original change's description:
> > Revert "Revert "apply codec origin in generator""
> > 
> > This reverts commit 363dd988a5.
> > 
> > Reason for revert: pdfium fix landed
> > 
> > Original change's description:
> > > Revert "apply codec origin in generator"
> > > 
> > > This reverts commit fa15877f48.
> > > 
> > > Reason for revert: Appears to break PDFium.
> > > 
> > > Original change's description:
> > > > apply codec origin in generator
> > > > 
> > > > Bug: skia:
> > > > Change-Id: I383dacb49b1e3c88467ccdbf3288764bb1bbf01a
> > > > Reviewed-on: https://skia-review.googlesource.com/58600
> > > > Reviewed-by: Leon Scroggins <scroggo@google.com>
> > > > Commit-Queue: Mike Reed <reed@google.com>
> > > 
> > > TBR=scroggo@google.com,reed@google.com
> > > 
> > > Change-Id: Id97137d6ec39ca638c941928bae6510814b1c499
> > > No-Presubmit: true
> > > No-Tree-Checks: true
> > > No-Try: true
> > > Bug: skia:
> > > Reviewed-on: https://skia-review.googlesource.com/60041
> > > Reviewed-by: Ben Wagner <benjaminwagner@google.com>
> > > Commit-Queue: Ben Wagner <benjaminwagner@google.com>
> > 
> > TBR=benjaminwagner@google.com,scroggo@google.com,reed@google.com
> > 
> > Change-Id: I1b54a6e6e6cbda07f346ffbbc4977f9db705abcd
> > No-Presubmit: true
> > No-Tree-Checks: true
> > No-Try: true
> > Bug: skia:
> > Reviewed-on: https://skia-review.googlesource.com/60320
> > Reviewed-by: Mike Reed <reed@google.com>
> > Commit-Queue: Mike Reed <reed@google.com>
> 
> TBR=benjaminwagner@google.com,scroggo@google.com,reed@google.com
> 
> Change-Id: I4c2d310521d1a678b407d30b9fe3c261c49d67bc
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:
> Reviewed-on: https://skia-review.googlesource.com/60560
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=benjaminwagner@google.com,scroggo@google.com,reed@google.com

Change-Id: I5c1e53aff3ad174b0d4a806c35b7cdcd194479d7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/60563
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2017-10-17 18:04:43 +00:00
Mike Reed
dd340146f1 Revert "Revert "Revert "apply codec origin in generator"""
This reverts commit 82269abfec.

Reason for revert: ios build needs include path for SkCodec.h

Original change's description:
> Revert "Revert "apply codec origin in generator""
> 
> This reverts commit 363dd988a5.
> 
> Reason for revert: pdfium fix landed
> 
> Original change's description:
> > Revert "apply codec origin in generator"
> > 
> > This reverts commit fa15877f48.
> > 
> > Reason for revert: Appears to break PDFium.
> > 
> > Original change's description:
> > > apply codec origin in generator
> > > 
> > > Bug: skia:
> > > Change-Id: I383dacb49b1e3c88467ccdbf3288764bb1bbf01a
> > > Reviewed-on: https://skia-review.googlesource.com/58600
> > > Reviewed-by: Leon Scroggins <scroggo@google.com>
> > > Commit-Queue: Mike Reed <reed@google.com>
> > 
> > TBR=scroggo@google.com,reed@google.com
> > 
> > Change-Id: Id97137d6ec39ca638c941928bae6510814b1c499
> > No-Presubmit: true
> > No-Tree-Checks: true
> > No-Try: true
> > Bug: skia:
> > Reviewed-on: https://skia-review.googlesource.com/60041
> > Reviewed-by: Ben Wagner <benjaminwagner@google.com>
> > Commit-Queue: Ben Wagner <benjaminwagner@google.com>
> 
> TBR=benjaminwagner@google.com,scroggo@google.com,reed@google.com
> 
> Change-Id: I1b54a6e6e6cbda07f346ffbbc4977f9db705abcd
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:
> Reviewed-on: https://skia-review.googlesource.com/60320
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=benjaminwagner@google.com,scroggo@google.com,reed@google.com

Change-Id: I4c2d310521d1a678b407d30b9fe3c261c49d67bc
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/60560
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2017-10-17 14:29:43 +00:00
Mike Reed
82269abfec Revert "Revert "apply codec origin in generator""
This reverts commit 363dd988a5.

Reason for revert: pdfium fix landed

Original change's description:
> Revert "apply codec origin in generator"
> 
> This reverts commit fa15877f48.
> 
> Reason for revert: Appears to break PDFium.
> 
> Original change's description:
> > apply codec origin in generator
> > 
> > Bug: skia:
> > Change-Id: I383dacb49b1e3c88467ccdbf3288764bb1bbf01a
> > Reviewed-on: https://skia-review.googlesource.com/58600
> > Reviewed-by: Leon Scroggins <scroggo@google.com>
> > Commit-Queue: Mike Reed <reed@google.com>
> 
> TBR=scroggo@google.com,reed@google.com
> 
> Change-Id: Id97137d6ec39ca638c941928bae6510814b1c499
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:
> Reviewed-on: https://skia-review.googlesource.com/60041
> Reviewed-by: Ben Wagner <benjaminwagner@google.com>
> Commit-Queue: Ben Wagner <benjaminwagner@google.com>

TBR=benjaminwagner@google.com,scroggo@google.com,reed@google.com

Change-Id: I1b54a6e6e6cbda07f346ffbbc4977f9db705abcd
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/60320
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2017-10-16 18:57:02 +00:00
Ben Wagner
363dd988a5 Revert "apply codec origin in generator"
This reverts commit fa15877f48.

Reason for revert: Appears to break PDFium.

Original change's description:
> apply codec origin in generator
> 
> Bug: skia:
> Change-Id: I383dacb49b1e3c88467ccdbf3288764bb1bbf01a
> Reviewed-on: https://skia-review.googlesource.com/58600
> Reviewed-by: Leon Scroggins <scroggo@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=scroggo@google.com,reed@google.com

Change-Id: Id97137d6ec39ca638c941928bae6510814b1c499
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/60041
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
2017-10-16 18:07:42 +00:00
Mike Reed
fa15877f48 apply codec origin in generator
Bug: skia:
Change-Id: I383dacb49b1e3c88467ccdbf3288764bb1bbf01a
Reviewed-on: https://skia-review.googlesource.com/58600
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2017-10-16 17:33:22 +00:00
Leon Scroggins III
de7f91b29f Remove SK_LEGACY_FRAME_INFO_ALPHA_TYPE
With https://chromium-review.googlesource.com/c/621815, Chromium no
longer references this. Delete it.

TBR=reed@google.com
Bug: skia:6839
Change-Id: Icd3d394858859e6732b1429394c7c04bb22b9dea
Reviewed-on: https://skia-review.googlesource.com/36581
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
2017-09-01 20:18:49 +00:00
Leon Scroggins III
ae79f32e79 Call initializeColorXform inside SkCodec
Make initializeColorXform private, and only call in the base class.
Add virtual method to skip initializeColorXform, for classes that do
not need one.

Change SkCodec::FrameInfo's SkAlphaType to an SkEncodedInfo::Alpha.
This allows proper checking internally whether SkCodec needs to do a
color correct premultiply.

Depends on https://chromium-review.googlesource.com/c/620947, for this
API change.

(Separated from review.skia.org/25746)

Bug: skia:5609
Bug: skia:6839
Change-Id: Icb0d46659c546060c34d32eaf792c86708726c7a
Reviewed-on: https://skia-review.googlesource.com/35880
Reviewed-by: Chris Blume <cblume@chromium.org>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-08-18 19:46:59 +00:00
Leon Scroggins III
04be2b54ba Reland "skia: add heif decoding support"
This reverts commit db68a426b6.

Fixes errors in Android and Google3

Bug: b/64077740
Change-Id: I3d2bb1223e4d8ba912ea2b88144aeecc487fce1a
Reviewed-on: https://skia-review.googlesource.com/35701
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Chong Zhang <chz@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
2017-08-18 14:40:29 +00:00
Leon Scroggins III
0741818e7a Move calls to conversion_possible to SkCodec
Move common code into the base class, so subclasses need not call
conversion_possible.

Use SkEncodedInfo rather than SkImageInfo, and use the proper frame.

API Changes:
- SkAndroidCodec:
  - Add getEncodedInfo(), for SkBitmapRegionCodec
- SkEncodedInfo:
  - Add opaque() helper
- SkBitmapRegionDecoder:
  - Remove unused conversionSupported

(Split off from skia-review.googlesource.com/c/25746)

Bug: skia:5601
Change-Id: If4a40d4b98a3dd0afde2b6058f92315a393a5baf
Reviewed-on: https://skia-review.googlesource.com/34361
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-08-17 16:09:31 +00:00
Mike Klein
db68a426b6 Revert "skia: add heif decoding support"
This reverts commit c2a954290d.

Reason for revert: both Android and Google3 rolls cannot compile.  Android cannot cast std::unique_ptr<T> to T*, Google3 cannot find HeifDecoderAPI.h.

Original change's description:
> skia: add heif decoding support
> 
> Bug: b/64077740
> Change-Id: I11e0243bcc4c21c0aa5aa29a719dd0fcba7ae6f7
> Reviewed-on: https://skia-review.googlesource.com/35123
> Reviewed-by: Chong Zhang <chz@google.com>
> Reviewed-by: Leon Scroggins <scroggo@google.com>
> Commit-Queue: Chong Zhang <chz@google.com>
> Commit-Queue: Leon Scroggins <scroggo@google.com>

TBR=scroggo@google.com,chz@google.com

Change-Id: Id98f025e63daec50408186000453d1695170f7a8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: b/64077740
Reviewed-on: https://skia-review.googlesource.com/35741
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2017-08-17 13:34:07 +00:00
Chong Zhang
c2a954290d skia: add heif decoding support
Bug: b/64077740
Change-Id: I11e0243bcc4c21c0aa5aa29a719dd0fcba7ae6f7
Reviewed-on: https://skia-review.googlesource.com/35123
Reviewed-by: Chong Zhang <chz@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Chong Zhang <chz@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-08-16 20:22:55 +00:00
Mike Reed
7f97f49a84 remove SK_SUPPORT_LEGACY_CODEC_NEW dead code
Bug: skia:
Change-Id: I59185b8acc00b6df854c613ba29d1002111fcb42
Reviewed-on: https://skia-review.googlesource.com/27240
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2017-07-26 22:10:10 +00:00
Mike Reed
ede7bac43f use unique_ptr for codec factories
Will need guards for android (at least)

Bug: skia:
Change-Id: I2bb8e656997984489ef1f2e41cd3d301c4e7b947
Reviewed-on: https://skia-review.googlesource.com/26040
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
2017-07-25 15:35:23 +00:00
Leon Scroggins III
588fb040b3 Report error on failure to create SkCodec
Update NewFromStream to report an error on failure to create an
SkCodec, so that a client can distinguish between
- not enough data
- invalid data

In Chromium, this will allow blink::ImageDecoder to call SetFailed if
the stream is invalid early and we never create an SkCodec. Without
this, ImageDecoder will keep trying to create an SkCodec when it
receives more data.

Change-Id: I4f505c56d91c982be36a828fd0f7db17b1596588
Reviewed-on: https://skia-review.googlesource.com/22642
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Reviewed-by: Chris Blume <cblume@chromium.org>
2017-07-14 21:14:06 +00:00
Leon Scroggins
571b30f611 Reland "Remove support for decoding to kIndex_8"
Original change's description:
> > Remove support for decoding to kIndex_8
> > 
> > Fix up callsites, and remove tests that no longer make sense.
> > 
> > Bug: skia:6828
> > Change-Id: I2548c4b7528b7b1be7412563156f27b52c9d4295
> > Reviewed-on: https://skia-review.googlesource.com/21664
> > Reviewed-by: Derek Sollenberger <djsollen@google.com>
> > Commit-Queue: Leon Scroggins <scroggo@google.com>
> 
> TBR=djsollen@google.com,scroggo@google.com
> 
> Change-Id: I1bc669441f250690884e75a9a61427fdf75c6907
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:6828
> Reviewed-on: https://skia-review.googlesource.com/22120
> Reviewed-by: Leon Scroggins <scroggo@google.com>
> Commit-Queue: Leon Scroggins <scroggo@google.com>

TBR=djsollen@google.com,scroggo@google.com

Bug: skia:6828
Change-Id: I36ff5a11c529d29e8adc95f43b8edc6fd1dbf5b8
Reviewed-on: https://skia-review.googlesource.com/22320
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-07-11 18:00:31 +00:00
Leon Scroggins
8321f7585b Revert "Remove support for decoding to kIndex_8"
This reverts commit 742a3e298f.

Reason for revert: Breaking Android roll:
frameworks/base/core/jni/android/graphics/BitmapFactory.cpp:453:18: error: no member named 'fColorPtr' in 'SkAndroidCodec::AndroidOptions'
    codecOptions.fColorPtr = colorPtr;
    ~~~~~~~~~~~~ ^
frameworks/base/core/jni/android/graphics/BitmapFactory.cpp:454:18: error: no member named 'fColorCount' in 'SkAndroidCodec::AndroidOptions'
    codecOptions.fColorCount = colorCount;
    ~~~~~~~~~~~~ ^

Original change's description:
> Remove support for decoding to kIndex_8
> 
> Fix up callsites, and remove tests that no longer make sense.
> 
> Bug: skia:6828
> Change-Id: I2548c4b7528b7b1be7412563156f27b52c9d4295
> Reviewed-on: https://skia-review.googlesource.com/21664
> Reviewed-by: Derek Sollenberger <djsollen@google.com>
> Commit-Queue: Leon Scroggins <scroggo@google.com>

TBR=djsollen@google.com,scroggo@google.com

Change-Id: I1bc669441f250690884e75a9a61427fdf75c6907
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:6828
Reviewed-on: https://skia-review.googlesource.com/22120
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-07-10 19:51:59 +00:00
Leon Scroggins III
742a3e298f Remove support for decoding to kIndex_8
Fix up callsites, and remove tests that no longer make sense.

Bug: skia:6828
Change-Id: I2548c4b7528b7b1be7412563156f27b52c9d4295
Reviewed-on: https://skia-review.googlesource.com/21664
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-07-10 17:06:48 +00:00
Leon Scroggins III
674a1848ae Add SkCodec::Result indicating error in the data
Previously, SkGifCodec treated an error in the LZW data as incomplete,
since we can still draw the partially decoded image. But a client doing
incremental decodes needs to distinguish this from truly incomplete
data. In the case of an error, the client should not attempt to provide
more data and decode again.

Add kErrorInInput, and return it when SkGifCodec sees a fatal error.
Treat it the same as kIncompleteInput when it comes to filling and DM.

Bug: skia:6825
Change-Id: Ic6ce3a62c0b065ed34dcd8006309e43272a3db9f
Reviewed-on: https://skia-review.googlesource.com/21530
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Chris Blume <cblume@chromium.org>
2017-07-06 16:49:36 +00:00
Leon Scroggins III
1f6af6baad Consolidate decoding frames into SkCodec
Add a new private method to SkCodec that handles Options.fFrameIndex:
- Check to ensure the index is valid
- Call onGetFrameCount to force parsing the stream
- Recursively call getPixels (it should be complete, so no need for
  incremental decoding) to decode the prior frame if necessary
- Zero fill a RestoreBGColor frame

Call the method in getPixels and startIncrementalDecode, and remove
duplicate code from GIF and WEBP.

Remove support for scaling frames beyond the first, which is currently
unused.

Preserve the feature of SkGifCodec that it will only parse to the end
of the first frame if the first frame is asked for. (Also note that
when we continue a partial frame, we won't force parsing the full
stream.) If the client only wants the first frame, parsing the rest
would be unnecessary. But if the client wants the second, we assume
they will want any remaining frames, so we parse the remainder of the
stream. This simplifies the code (so SkCodec does not have to ask its
subclass to parse up to a particular frame).

Update tests that relied on the old behavior:
- Codec_partialAnim now hardcodes the bytes needed. Previously it
  relied on the old behavior that GIF only parsed up to the frame being
  decoded.
- Codec_skipFullParse now only tests the first frame, since that is the
  case where it is important to skip a full parse.

TBR=reed@google.com
No changes to the public API.

Change-Id: Ic2f075452dfeedb4e3e60e6cf4df33ee7bd38495
Reviewed-on: https://skia-review.googlesource.com/19276
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-06-12 20:55:59 +00:00
Matt Sarett
ee7c8202eb Remove debug checks for unsupported ICC profiles
This was never fully integrated with our automated image testing.
I feel it has limited usefulness in terms of catching bugs.

Bug: skia:
Change-Id: Iecd0a4e9b664ab0b351debde45ada864379de7ec
Reviewed-on: https://skia-review.googlesource.com/19267
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
2017-06-09 15:26:48 +00:00
Leon Scroggins III
33deb7ed4d Make SkCodec more flexible about its required frame
SkCodec sets fRequiredFrame to be the earliest possible frame that a
given frame can depend on. e.g.

- Frame A fills the screen, Keep
- Frame B does not cover A, Keep
- Frame C covers B but not A, and is opaque

Frame C can depend on either A or B. SkCodec already reports that C
depends on A. This CL allows a client of SkCodec to use either A or
B to create C.

Also expose the DisposalMethod. Since any frame between A and C can
be used to create C except for DisposePrevious frames, the client
needs to be able to know the disposal method so they do not try to
use such a frame to create C.

Further, the disposal method can be used to give the client a better
idea whether they will continue to need a frame. (e.g. if frame i is
DisposePrevious and depends on i-1, the client may not want to steal
i-1 to create i, since i+1 may also depend on i-1.)

TODO: Share code for decoding prior frames between GIF and WEBP

Change-Id: I91a5ae22ba3d8dfbe0bde833fa67ae3da0d81ed6
Reviewed-on: https://skia-review.googlesource.com/13722
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Chris Blume <cblume@chromium.org>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-06-07 20:15:17 +00:00
Leon Scroggins III
c6e6a5f45e Simplify SkCodecs' call to SkColorSpaceXform::apply
Most SkCodec subclasses did the following to apply their
SkColorSpaceXform:
  dstFormat = select_xform_format(dstInfo.colorType());
  srcFormat = select_xform_format(<something that doesn't change>);
  xformAlphaType = select_xform_alpha(dstInfo.alphaType(),
                                      this->getInfo().alphaType());
  this->colorXform()->apply(dstFormat, dst, srcFormat, src, width,
                            xformAlphaType);

Consolidate the computation of these parameters into SkCodec and add a
new method to SkCodec that calls apply() with those parameters.

Add a SkColorSpaceXform::ColorFormat to SkCodec. This allows the new
method SkCodec::applyColorXform to supply the ColorFormat.

TBR=reed@google.com
(No change to public API.)

Change-Id: I8ea7ba4c0024be827a9f9359796c778744330f6e
Reviewed-on: https://skia-review.googlesource.com/18523
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-06-05 20:14:57 +00:00
Leon Scroggins III
557fbbe05b Add animation support to SkWebpCodec
TBR=reed@google.com
(No change to the public API, but changed a header file)

SkWebpCodec:
- Implement onGetFrameCount, onGetFrameInfo, and onGetRepetitionCount
- Respect the alpha reported by libwebp. Although the spec states that
  it is only a hint, the libwebp encoder uses it properly. Respecting
  allows us to draw opaque images faster and decode them to 565. This
  also matches other SkCodecs (and Chromium).
- onGetPixels:
  - Decode the frame requested, recursively decoding required frame if
    necessary
  - When blending with a prior frame, use SkRasterPipeline

SkCodec:
- Move check for negative index to getFrameInfo
- Reset the colorXform if one is not needed

SkCodecAnimation:
- Add new blend enum, for WebP's (and APNG's) non-blending option

SkFrameHolder:
- New base classes for frames and the owner of the frames, allowing
  code sharing between SkWebpCodec and SkGifCodec (particularly for
  determining whether a frame has alpha and what frame it depends on)
- When moving items from SkGIFFrameContext, use Skia conventions (i.e.
  int instead of unsigned)
- Rename "delay time" to "duration", to match e.g. SkFrameInfo::
  fDuration

SkGifImageReader:
- Move pieces to SkFrameHolder, and adapt to changes made in the
  process
- Make setAlphaAndRequiredFrame (now on the base class SkFrameHolder)
  more general to support webp, and add support for frames that do not
  blend
- Change SkGIFFrameContext from a struct to a class, to match how we
  use the distinction elsewhere (i.e. struct is a small object with
  public fields)
- Rework hasTransparentPixel (now hasTransparency, since it returns true
  in some cases where there is not a transparent pixel) to better fit
  with the modified setAlphaAndRequiredFrame. Also be more consistent
  when there is no transparent pixel but no color map.
- Simplify an if condition that was previously simplified in 2d61e717
  but accidentally got reverted in a4db9be6

CodecAnimTest:
- Test new animated webp files
- Rearrange the test to more cleanly print alpha type mismatches for
  the first frame

resources:
- webp-animated.webp
  - animated webp from Chromium
- blendBG.webp
  - new webp file using bits of webp-animated-semitransparent4.webp
    from Chromium
  - tests required frame and alpha when using the non-blending mode
  - frames have the following properties:
    - Frame 0: no alpha, fills screen
    - Frame 1: alpha, fills screen
    - Frame 2: no alpha, fills screen
    - Frame 3: alpha, fills screen, blendBG
    - Frame 4: no alpha, fills screen, blendBG
    - Frame 5: alpha, blendBG
    - Frame 6: covers 4, has alpha, blendBG
  - also used to test decoding to 565 if the new frame data has alpha
    but blends onto an opaque frame

DM.cpp:
- Test animated images to non-native 8888 and unpremul

DMSrcSink.cpp:
- Do not test non-native 8888 decodes to f16 dst
- Test unpremul decodes to f16
- Copy a frame of an animated image prior to drawing, since in unpremul
  mode, the DM code will premultiply first.

Bug: skia: 3315
Change-Id: I4e55ae2ee5bc095b37a743bdcfac644be603b980
Reviewed-on: https://skia-review.googlesource.com/16707
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
2017-05-23 15:28:37 +00:00
Leon Scroggins III
249b8e3a2b Switch SkCodec to int for counts and indices
This matches other Skia APIs. size_t was adopted from blink/
GIFImageReader.

Change-Id: Ic83e59f0942f597c4fb834e623acd9886ad483fe
Reviewed-on: https://skia-review.googlesource.com/13274
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
Reviewed-by: Chris Blume <cblume@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-04-17 17:38:35 +00:00
Leon Scroggins III
e132e7be5f Add SkCodec methods for individual frames
Add a version of getFrameInfo that returns information about a single
frame, allowing a client to skip creating the entire vector.

Add getFrameCount, for determining the number of frames in the image.

Reimplement std::vector<FrameInfo> getFrameInfo with the new methods.

Updates to the test:
- getFrameInfo(size_t, FrameInfo*) fails before parsing
- Test both versions of getFrameInfo
- Recreate the codec between tests, to test parsing

Change-Id: I77c19087f2f8dcf2c536d80167b18ad1ca96ae94
Reviewed-on: https://skia-review.googlesource.com/13190
Reviewed-by: Matt Sarett <msarett@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Chris Blume <cblume@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2017-04-12 15:22:43 +00:00
Leon Scroggins III
a4db9be6a2 Correct GIF frame dependencies and track alpha
Add SkCodec::FrameInfo::fAlphaType. The SkImageInfo for the SkCodec
specifies the SkAlphaType for the first frame, but the opacity can vary
from frame to frame.

When determining the required frame, also compute whether a frame has
alpha. Update how we determine the required frame, which had bugs.
(Update a test that had an incorrect required frame as a result.)

Add new test images covering cases that have been fixed:
- randPixelsAnim2.gif
It has the following frames:
A (keep)
B (keep) (subset)
C (disposePrevious) (covers B)
D (any) (does *not* cover B)

B and C depend on A, but D depends on B, since after disposing C, B
should be visible again.

- alphabetAnim.gif
Includes frames which fill the image size, with different disposal
methods and transparencies.

Change-Id: Ie086167711c4cac4931ed8c4ddaeb9c9b0b91fdb
Reviewed-on: https://skia-review.googlesource.com/9810
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
2017-04-11 15:05:05 +00:00
Matt Sarett
cf3f2347c8 Add SkTransferFunctionBehavior flag: Use in codec and encoder
This is a step towards removing the non-linear blending flag from
SkColorSpace.  The flag on SkColorSpace used to control the premul
behavior - now it is controlled by this option.

BUG=skia:

Change-Id: Ia29bd8c2b0596a93c6aa14332dcd9bd39e388a90
Reviewed-on: https://skia-review.googlesource.com/10008
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
2017-03-24 13:19:53 +00:00
Florin Malita
78c212a719 SK_API-export SkCodec
R=scroggo@google.com,reed@google.com

Change-Id: Ic9fba1919aeb2c5e92c053d43a41d33201abc37c
Reviewed-on: https://skia-review.googlesource.com/6080
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Leon Scroggins <scroggo@google.com>
2016-12-14 18:55:47 +00:00
Leon Scroggins III
3639faada2 Add SkCodec::FrameInfo::fFullyReceived
This indicates whether the frame has been fully received, i.e. the
stream contains enough data to decode to the end of the frame.

A client may want to use this to know whether they should attempt to
decode this frame, if they do not want to decode partial frames.

Change-Id: I336c7031b0c0b8c1401ce040f5372aedc87fdc14
Reviewed-on: https://skia-review.googlesource.com/5703
Reviewed-by: Chris Blume <cblume@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2016-12-14 18:39:34 +00:00
raftias
d737bee147 Updated the get_images_from_skps tool to check for ICC profile support
Tool will now check for and output all unsuccessfully parsed ICC
profiles in input sksp images if --testColorCorrectionSupported is set
as a flag. All ICC-aware codecs had to be slightly modified in order to
expose this information, as the logic for accessing the ICC profiles is
all within the codecs. If --writeFailedImages is set, it will also
output all images whoses ICC profiles were not supported.

TBR=reed@google.com

BUG=skia:

Change-Id: Ic310d82bdebf92f8d3bc0ad3dcc688136b6de377
Reviewed-on: https://skia-review.googlesource.com/5355
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Robert Aftias <raftias@google.com>
2016-12-12 17:06:41 +00:00
Leon Scroggins III
0dd698737e Be explicit about the vector<FrameInfo> type
This fixes a compile error in Chromium.

BUG=skia:6026

Change-Id: Idd5ad22cb52a084836de6e1427f1f047d1feab08
Reviewed-on: https://skia-review.googlesource.com/5500
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2016-12-02 15:14:28 +00:00
Hal Canary
db6830162e SkImageEncoder: simplify API
(re-land 248ff02 & 2cb6cb7, with changes)

  - Hide SkImageEncoder class in private header.
  - SkImageEncoder::Type becomes SkEncodedImageFormat
  - SkEncodedFormat becomes SkEncodedImageFormat
  - SkImageEncoder static functions replaced with
    single function EncodeImage()
  - utility wrappers for EncodeImage() are in
    sk_tool_utils.h

TODO: remove link-time registration mechanism.
TODO: clean up clients use of API and flip the flag.
TODO: implement EncodeImage() in chromeium/skia/ext

Change-Id: I47d451e50be4d5c6c130869c7fa7c2857243d9f0
Reviewed-on: https://skia-review.googlesource.com/4909
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-on: https://skia-review.googlesource.com/5186
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2016-11-23 16:40:32 +00:00
Hal Canary
a2b4bdce8c Revert 248ff023 & 2cb6cb72
Revert "SkImageEncoder: simplify API"
This reverts commit 248ff02331.
Revert "Fix bug: can't convert nullptr -> bool"
This reverts commit 2cb6cb7218.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=5151
NOTRY=true

Change-Id: I5f6414392d6545f74db0b5bb50608d04f053a8ec
Reviewed-on: https://skia-review.googlesource.com/5151
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2016-11-22 21:23:51 +00:00
Hal Canary
248ff02331 SkImageEncoder: simplify API
- Hide SkImageEncoder class in private header.
  - SkImageEncoder::Type becomes SkEncodedImageFormat
  - SkEncodedFormat becomes SkEncodedImageFormat
  - SkImageEncoder static functions replaced with
    single function EncodeImage()
  - utility wrappers for EncodeImage() are in
    sk_tool_utils.h

TODO: remove link-time registration mechanism.
TODO: clean up clients use of API and flip the flag.
TODO: implement EncodeImage() in chromeium/skia/ext

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4909

Change-Id: Ib48b31fdc05cf23cda7f56ebfd67c841c149ce70
Reviewed-on: https://skia-review.googlesource.com/4909
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
2016-11-22 18:25:55 +00:00
Matt Sarett
a9e9bfc6e4 Delete qcms
This was always intended to be a temporary dependency to use for
testing.  It has served its purpose.

Also, this has already been dropped (accidentally, I think) by
the new GN build.

TBR=reed@google.com

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4220

Change-Id: Ic72ee08bbfaf86ed86a4122fd38be2921eb1327e
Reviewed-on: https://skia-review.googlesource.com/4220
Reviewed-by: Matt Sarett <msarett@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
2016-11-01 16:45:40 +00:00
scroggo
e71b1a1496 Report repetition count in SkCodec
Add a new accessor to retrieve the repetition count.

Remove constants (and corresponding copyright) in SkCodecAnimation.
These may make sense for the calling code, but are not needed here.

kRepetitionCountInfinite corresponds to Blink's kAnimationLoopInfinite.
Move cLoopCountNotSeen to private. It is used to determine whether we
still need to parse. Add a new enum to the parse query - only parse
enough to determine the repetition count.

Unlike Chromium, SkGifCodec does not account for deleting the reader
(which SkGifCodec does not do) or failed decodes.

Add a test.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2447863002

Review-Url: https://codereview.chromium.org/2447863002
2016-11-01 08:28:28 -07:00
Matt Sarett
7f650bdfd8 Tag images as sRGB by default in SkCodec
Unmarked images should be treated as sRGB.

BUG=skia:4895

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4151

Change-Id: I5f8c308d22fd2d069cbfa89c5a5bb19ae6fde8bd
Reviewed-on: https://skia-review.googlesource.com/4151
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
2016-10-31 19:19:33 +00:00
bungeman
6bd5284415 Remove SkAutoTUnref and SkAutoTDelete from public includes.
This also makes the required changed to src, tests, and tools. The few
public APIs modified by this change appear to be unused outside of Skia.

Removing these from the public API makes it easier to ensure users are
no longer using them.

This also updates GrGpu::wrapBackendXXX and the
::onWrapBackendXXX methods to clarify ownership.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2448593002

Review-Url: https://codereview.chromium.org/2448593002
2016-10-27 09:30:08 -07:00
scroggo
19b91531e9 Add support for multiple frames in SkCodec
Add an interface to decode frames beyond the first in SkCodec, and
add an implementation for SkGifCodec.

Add getFrameData to SkCodec. This method reads ahead in the stream
to return a vector containing meta data about each frame in the image.
This is not required in order to decode frames beyond the first, but
it allows a client to learn extra information:
- how long the frame should be displayed
- whether a frame should be blended with a prior frame, allowing the
  client to provide the prior frame to speed up decoding

Add a new fields to SkCodec::Options:
- fFrameIndex
- fHasPriorFrame

The API is designed so that SkCodec never caches frames. If a
client wants a frame beyond the first, they specify the frame in
Options.fFrameIndex. If the client does not have the
frame's required frame (the frame that this frame must be blended on
top of) cached, they pass false for
Options.fHasPriorFrame. Unless the frame is
independent, the codec will then recursively decode all frames
necessary to decode fFrameIndex. If the client has the required frame
cached, they can put it in the dst they pass to the codec, and the
codec will only draw fFrameIndex onto it.

Replace SkGifCodec's scanline decoding support with progressive
decoding, and update the tests accordingly.

Implement new APIs in SkGifCodec. Instead of using gif_lib, use
GIFImageReader, imported from Chromium (along with its copyright
headers) with the following changes:
- SkGifCodec is now the client
- Replace blink types
- Combine GIFColorMap::buildTable and ::getTable into a method that
  creates and returns an SkColorTable
- Input comes from an SkStream, instead of a SegmentReader. Add
  SkStreamBuffer, which buffers the (potentially partial) stream in
  order to decode progressively.
  (FIXME: This requires copying data that previously was read directly
  from the SegmentReader. Does this hurt performance? If so, can we
  fix it?)
- Remove UMA code
- Instead of reporting screen width and height to the client, allow the
  client to query for it
- Fail earlier if the first frame AND screen have size of zero
- Compute required previous frame when adding a new one
- Move GIFParseQuery from GIFImageDecoder to GIFImageReader
- Allow parsing up to a specific frame (to skip parsing the rest of the
  stream if a client only wants the first frame)
- Compute whether the first frame has alpha and supports index 8, to
  create the SkImageInfo. This happens before reporting that the size
  has been decoded.

Add GIFImageDecoder::haveDecodedRow to SkGifCodec, imported from
Chromium (along with its copyright header), with the following changes:
- Add support for sampling
- Use the swizzler
- Keep track of the rows decoded
- Do *not* keep track of whether we've seen alpha

Remove SkCodec::kOutOfOrder_SkScanlineOrder, which was only used by GIF
scanline decoding.

Call onRewind even if there is no stream (SkGifCodec needs to clear its
decoded state so it will decode from the beginning).

Add a method to SkSwizzler to access the offset into the dst, taking
subsetting into account.

Add a GM that animates a GIF.
Add tests for the new APIs.

*** Behavior changes:
* Previously, we reported that an image with a subset frame and no transparent
index was opaque and used the background index (if present) to fill the
background. This is necessary in order to support index 8, but it does not
match viewers/browsers I have seen. Examples:
- Chromium and Gimp render the background transparent
- Firefox, Safari, Linux Image Viewer, Safari Preview clip to the frame (for
  a single frame image)
This CL matches Chromium's behavior and renders the background transparent.
This allows us to have consistent behavior across products and simplifies
the code (relative to what we would have to do to continue the old behavior
on Android). It also means that we will no longer support index 8 for some
GIFs.
* Stop checking for GIFSTAMP - all GIFs should be either 89a or 87a.
This matches Chromium. I suspect that bugs would have been reported if valid
GIFs started with "GIFVER" instead of "GIF89a" or "GIF87a" (but did not decode
in Chromium).

*** Future work not included in this CL:
* Move some checks out of haveDecodedRow, since they are the same for the
  entire frame e.g.
- intersecting the frameRect with the full image size
- whether there is a color table
* Change when we write transparent pixels
- In some cases, Chromium deemed this unnecessary, but I suspect it is slower
  than the fallback case. There will continue to be cases where we should
  *not* write them, but for e.g. the first pass where we have already
  cleared to transparent (which we may also be able to skip) writing the
  transparent pixels will not make anything incorrect.
* Report color type and alpha type per frame
- Depending on alpha values, disposal methods, frame rects, etc, subsequent
  frames may have different properties than the first.
* Skip copies of the encoded data
- We copy the encoded data in case the stream is one that cannot be rewound,
  so we can parse and then decode (possibly not immediately). For some input
  streams, this is unnecessary.
  - I was concerned this cause a performance regression, but on average the
    new code is faster than the old for the images I tested [1].
  - It may cause a performance regression for Chromium, though, where we can
    always move back in the stream, so this should be addressed.

Design doc:
https://docs.google.com/a/google.com/document/d/12Qhf9T92MWfdWujQwCIjhCO3sw6pTJB5pJBwDM1T7Kc/

[1] https://docs.google.com/a/google.com/spreadsheets/d/19V-t9BfbFw5eiwBTKA1qOBkZbchjlTC5EIz6HFy-6RI/

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Review-Url: https://codereview.chromium.org/2045293002
2016-10-24 09:03:26 -07:00
Matt Sarett
313c4635e3 Safely handle unsupported color xforms in SkCodec
(1) The transformation code *should* support any src SkColorSpace
that we successfully parse.  This is agreed upon internally and
by clients.  The fact that we currently don't is just a bug...
(2) We cannot and will not support all SkColorSpaces as dsts.

So if we fail to make a SkColorSpaceXform, we should assume that
it was caused by a bad dst color space.  The correct response in
this case is to return kInvalidConversion.  I've rewritten the CL
to do this.

The fact that weird src spaces will sometimes trigger a
kInvalidConversion is just a bug that is being actively worked on.

TBR=reed@google.com

BUG=skia:

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Change-Id: Iac2b45120507ec71b1b3d555c61931f7348dad9e
Reviewed-on: https://skia-review.googlesource.com/3661
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Robert Aftias <raftias@google.com>
2016-10-20 17:31:35 +00:00
scroggo
8e6c7ada5a Make SkPngCodec decode progressively.
This is a step towards using SkCodec in Chromium, where progressive
decoding is necessary.

Switch from using png_read_row (which expects all the data to be
available) to png_process_data, which uses callbacks when rows are
available.

Create a new API for SkCodec, which supports progressive decoding and
scanline decoding. Future changes will switch the other clients off of
startScanlineDecode and get/skip-Scanlines to the new API.

Remove SkCodec::kNone_ScanlineOrder, which was only used for interlaced
PNG images. In the new API, interlaced PNG fits kTopDown. Also remove
updateCurrScanline(), which was only used by the old implementation for
interlaced PNG.

DMSrcSink:
- In CodecSrc::kScanline_Mode, use the new method for scanline decoding
for the supported formats (just PNG and PNG-in-ICO for now).

fuzz.cpp:
- Remove reference to kNone_ScanlineOrder

SkCodec:
- Add new APIs:
    - startIncrementalDecode
    - incrementalDecode
- Remove kNone_SkScanlineOrder and updateCurrScanline()
- Set fDstInfo and fOptions in getPixels(). This may not be necessary
  for all implementations, but it simplifies things for SkPngCodec.

SkPngCodec:
- Implement new APIs
- Switch from sk_read_fn/png_read_row etc to png_process_data
- Expand AutoCleanPng's role to decode the header and create the
  SkPngCodec
- Make the interlaced PNG decoder report how many lines were
  initialized during an incomplete decode

SkIcoCodec:
- Implement the new APIs; supported for PNG in ICO

SkSampledCodec:
- Call the new method for decoding scanlines, and fall back to the old
  method if the new version is unimplemented
- Remove references to kNone_SkScanlineOrder

tests/CodecPartial:
- Add a test which decodes part of an image, then finishes the decode,
  and compares it to the straightforward method

tests/CodecTest:
- Add a test which decodes all scanlines using the new method
- Repurpose the Codec_stripes test to decode using the new method in
  sections rather than all at once
- In the method check(), add a parameter for whether the image supports
  the new method of scanline decoding, and be explicit about whether an
  image supports incomplete
- Test incomplete PNG decodes. We should have been doing it anyway for
  non-interlaced (except for an image that is too small - one row), but
  the new method supports interlaced incomplete as well
- Make test_invalid_parameters test the new method
- Add a test to ensure that it's safe to fall back to scanline decoding without
  rewinding

BUG=skia:4211

The new version was generally faster than the old version (but not significantly so).

Some raw performance differences can be found at https://docs.google.com/a/google.com/spreadsheets/d/1Gis3aRCEa72qBNDRMgGDg3jD-pMgO-FXldlNF9ejo4o/

Design doc can be found at https://docs.google.com/a/google.com/document/d/11Mn8-ePDKwVEMCjs3nWwSjxcSpJ_Cu8DF57KNtUmgLM/

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Review-Url: https://codereview.chromium.org/1997703003
2016-09-16 08:20:38 -07:00
msarett
f7eb6fc71a Implement Fill() for incomplete decodes to RGBA_F16
Before this patch, we would hit an SkASSERT(false).

BUG=skia:
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Review-Url: https://codereview.chromium.org/2335203002
2016-09-13 09:04:11 -07:00
reed
42943c8aa9 change SkStreams to work with sk_sp<SkData> instead of SkData*
BUG=skia:
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Review-Url: https://codereview.chromium.org/2333713002
2016-09-12 12:01:44 -07:00