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* Consolidate decoding frames into SkCodecGravatar Leon Scroggins III2017-06-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Add animation support to SkWebpCodecGravatar Leon Scroggins III2017-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* SkImageEncoder: simplify APIGravatar Hal Canary2016-11-23
| | | | | | | | | | | | | | | | | | | | | | | | (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>
* Revert 248ff023 & 2cb6cb72Gravatar Hal Canary2016-11-22
| | | | | | | | | | | | | | Revert "SkImageEncoder: simplify API" This reverts commit 248ff02331d7f73ee4b6c5a7eabeae1080c16cd4. Revert "Fix bug: can't convert nullptr -> bool" This reverts commit 2cb6cb7218171b357bb5c934f032ba69c7b78401. 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>
* SkImageEncoder: simplify APIGravatar Hal Canary2016-11-22
| | | | | | | | | | | | | | | | | | | | | | - 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>
* Use demux API in SkWebpCodecGravatar msarett2016-09-07
| | | | | | | | | | | | | | | * Necessary to read ICC profiles * Will be necessary to implement animation * Requires consolidated data with length Doesn't affect decode performance (thought I believe our performance tests only cover SkStreams with memory bases). BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2311793004 Review-Url: https://codereview.chromium.org/2311793004
* Parse ICC profiles from webpsGravatar msarett2016-08-24
| | | | | | | BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2269333002 Review-Url: https://codereview.chromium.org/2269333002
* Add SkEncodedInfo to report properties of encoded image dataGravatar msarett2016-04-20
| | | | | | | | | | | | | | | | | | | All this does is build an SkEncodedInfo for each codec, and then convert it to an SkImageInfo. In future steps I intend to: (1) Use SkEncodedInfo in place of SrcConfig in SkSwizzler. (2) Support more conversions in SkSwizzler (non-native BGRA/RGBA, 16-bit components, float, fixed point) (3) Investigate optimizing conversions from encoded data to linear color spaces. BUG=skia:4133 GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1820073002 Committed: https://skia.googlesource.com/skia/+/f682d9ad70d690a343bc15e26ef321d86770be41 Review URL: https://codereview.chromium.org/1820073002
* Revert of Add SkEncodedInfo to report properties of encoded image data ↵Gravatar robertphillips2016-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (patchset #6 id:200001 of https://codereview.chromium.org/1820073002/ ) Reason for revert: Lots of bots failing Original issue's description: > Add SkEncodedInfo to report properties of encoded image data > > All this does is build an SkEncodedInfo for each codec, and > then convert it to an SkImageInfo. > > In future steps I intend to: > (1) Use SkEncodedInfo in place of SrcConfig in SkSwizzler. > (2) Support more conversions in SkSwizzler (non-native > BGRA/RGBA, 16-bit components, float, fixed point) > (3) Investigate optimizing conversions from encoded data > to linear color spaces. > > BUG=skia:4133 > GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1820073002 > > Committed: https://skia.googlesource.com/skia/+/f682d9ad70d690a343bc15e26ef321d86770be41 TBR=scroggo@google.com,reed@google.com,msarett@google.com # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=skia:4133 Review URL: https://codereview.chromium.org/1895383002
* Add SkEncodedInfo to report properties of encoded image dataGravatar msarett2016-04-18
| | | | | | | | | | | | | | | | | All this does is build an SkEncodedInfo for each codec, and then convert it to an SkImageInfo. In future steps I intend to: (1) Use SkEncodedInfo in place of SrcConfig in SkSwizzler. (2) Support more conversions in SkSwizzler (non-native BGRA/RGBA, 16-bit components, float, fixed point) (3) Investigate optimizing conversions from encoded data to linear color spaces. BUG=skia:4133 GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1820073002 Review URL: https://codereview.chromium.org/1820073002
* Use a smart pointer for SkColorSpace factoriesGravatar msarett2016-03-07
| | | | | | | | | | This should fix master-skia in Android because we no longer need to include src/core for SkCodec.h. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1766413002 Review URL: https://codereview.chromium.org/1766413002
* Add reallyHasAlpha() to SkAndroidCodecGravatar msarett2015-12-10
| | | | | | | | | This also modified the default implementation of onReallyHasAlpha() in SkCodec. BUG=skia: Review URL: https://codereview.chromium.org/1518743002
* Make SkCodec support peek() and read()Gravatar scroggo2015-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Update SkCodec's dox to point out that some of the data must be read twice in order to decode - Add an accessor that reports how much is needed for reading twice - Make SkCodec default to use peek() If an input stream supports peek()ing, peek() instead of reading. This way the stream need not implement rewind() - Make SkCodec use read() + rewind() as a backup So that streams without peek() implemented can still function properly (assuming they can rewind). - read everything we may need to determine the format once In SkCodec::NewFromStream, peek()/read() 14 bytes, which is enough to read all of the types we support. Pass the buffer to each subtype, which will have enough info to determine whether it is the right type. This simplifies the code and results in less reading and rewinding. - NOTE: SkWbmpCodec needs the following number of bytes for the header + 1 (type) + 1 (reserved) + 3 (width - bytes needed to support up to 0xFFFF) + 3 (height - bytes needed to support up to 0xFFFF) = 8 - in SkWebpCodec, support using read + rewind as a backup if peek does not work. A change in Android will add peek() to JavaInputStreamAdapter. BUG=skia:3257 Review URL: https://codereview.chromium.org/1472123002
* Fill incomplete images in SkCodec parent classGravatar msarett2015-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | 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
* Move all knowledge of X sampling into SkScaledCodecGravatar scroggo2015-10-02
| | | | | | | | | | | | | | | | | | | | | | | Prior to this CL, each SkCodec subclass that allows sampling does an extra check in onStartScanlineDecode to determine whether the X dimension is supported for sampling. Remove this check, and provide a way for SkScaledCodec to directly access the SkSwizzler, and update it to do sampling. This way, the SkCodec knows nothing of sampling, but we can still save the extra step of sampling afterwards. FIXME: SkBmpRLECodec still calls SkScaledCodec::DimensionsSupported. It seems like it could directly support sampling, rather than dealing with SkScaledCodec (partially). Add a new base class for SkSwizzler. It allows updating the swizzler after it was created, which is done by SkScaledCodec. Modify SkSwizzler's constructor/factory function to stop taking any info about sampling, assume the sample size is one, and move modifying that into a virtual function overridden from the base class. BUG=skia:4284 Review URL: https://codereview.chromium.org/1372973002
* Add the ability to decode a subset to SkCodecGravatar scroggo2015-07-22
| | | | | | | | | | | | | | | | | | | | | | | | This allows codecs that support subsets natively (i.e. WEBP) to do so. Add a field on SkCodec::Options representing the subset. Add a method on SkCodec to find a valid subset which approximately matches a desired subset. Implement subset decodes in SkWebpCodec. Add a test in DM for decoding subsets. Notice that we only start on even boundaries. This is due to the way libwebp's API works. SkWEBPImageDecoder does not take this into account, which results in visual artifacts. FIXME: Subsets with scaling are not pixel identical, but close. (This may be fine, though - they are not perceptually different. We'll just need to mark another set of images in gold as valid, once https://skbug.com/4038 is fixed, so we can tests scaled webp without generating new images on each run.) Review URL: https://codereview.chromium.org/1240143002
* Add SkWebpCodec, for decoding .webp images.Gravatar scroggo2015-06-18
Based on SkImageDecoder_libwebp. TODO: Support YUV? (Longer term - may influence our API for SkImageGenerator) BUG=skia:3257 Review URL: https://codereview.chromium.org/1044433002
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