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6e3e42296b
skia2/include/core
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commit-bot@chromium.org 6e3e42296b Break up SkLazyPixelRef functionally into class hierarchy. 
The reason for this CL is to allow greater decoder flexibility.
Chrome currently uses its own decoding functions.  These allow for
greater flexibility in dealing with images with multiple frames or
partial data.  The DecodeProc function was not flexible enough to
handle these.  Instead of asking the decoder to squeeze everything
into the DecodeProc, we now ask the downstream library to inherit from
SkCachingPixelRef.  If WebKit's LazyDecodingPixelRef is re-tooled to
inherit from SkCachingPixelRef, then it can make use of Skia's caching
ability while still allowing it to deal with multiple frames, scaling,
subsetting, and partial data.

-   The abstract SkCachingPixelRef class handles caching the decoded
    data in a SkScaledImageCache.  This class relies on the virtual
    functions onDecodeInfo() and onDecode() to do the actual decoding
    of data.

-   The SkLazyCachingPixelRef class is derived from SkCachingPixelRef.
    It provides an implementation of onDecodeInfo() and onDecode() in
    terms of calls to a SkBitmapFactory::DecodeProc function.  It also
    provides an Install() static method which installs a new
    SkLazyCachingPixelRef into a SkBitmap.

SkLazyCachingPixelRef exists for two reasons: to test
SkCachingPixelRef within Skia and as an example for downstream
developers to make their own classes that inherit from
SkCachingPixelRef.

-   The CachedDecodingPixelRefTest was updated to test the
    SkLazyCachingPixelRef class and indirectly the SkCachingPixelRef
    class.

BUG=
R=reed@google.com, scroggo@google.com

Author: halcanary@google.com

Review URL: https://codereview.chromium.org/54203006

git-svn-id: http://skia.googlecode.com/svn/trunk@12149 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-11-06 10:08:30 +00:00
..
Sk64.h Revert r10705 (ARM Skia NEON patches - 04 - Clean SkFixed / SkLONGLONG) due to 1000+ linux_layout failures (http://build.chromium.org/p/tryserver.chromium/builders/linux_layout_rel/builds/18997/steps/webkit_tests/logs/stdio) 2013-08-15 13:43:23 +00:00
SkAdvancedTypefaceMetrics.h Replace SkTScopedPtr with SkAutoTDelete in Skia. 2013-08-29 22:14:04 +00:00
SkAlpha.h Revert "Revert "change SkColorTable to be immutable"" 2013-10-10 14:44:56 +00:00
SkAnnotation.h All SkAnnotations are no-draw. Propose we fold that through. 2013-10-29 20:44:39 +00:00
SkBitmap.h Break up SkLazyPixelRef functionally into class hierarchy. 2013-11-06 10:08:30 +00:00
SkBitmapDevice.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
SkBlitRow.h remove dst/rendertarget support for kARGB_4444_Config 2013-06-21 18:30:53 +00:00
SkBounder.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkCanvas.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
SkChecksum.h Add SkChecksum::Murmur3. 2013-07-23 20:25:34 +00:00
SkChunkAlloc.h combine glyph and image bulk alloc, and adjust initial alloc size, to reduce total waste from 50% to 30% 2013-06-19 19:25:36 +00:00
SkClipStack.h Avoid re-rendering stencil clip for every draw with reducable clip stack 2013-11-05 15:03:08 +00:00
SkColor.h SkAlpha constant defs 2013-07-19 17:43:27 +00:00
SkColorFilter.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkColorPriv.h ARM Skia NEON patches - 01 - Simple fixes 2013-07-15 13:10:31 +00:00
SkColorShader.h Added print out of SkShader information to debugger 2013-01-15 20:17:47 +00:00
SkColorTable.h Remove SkColorTable from SkFlattenable hierarchy. 2013-10-15 20:36:16 +00:00
SkComposeShader.h Added print out of SkShader information to debugger 2013-01-15 20:17:47 +00:00
SkData.h SK_ONCE for SkData and SkPathRef 2013-10-23 14:44:08 +00:00
SkDataTable.h Remove SkDataTable from SkFlattenable hierarchy. 2013-10-15 20:39:57 +00:00
SkDeque.h This CL addresses "SkCanvas::save flags are not respected by GPU backend" (https://code.google.com/p/skia/issues/detail?id=1503). 2013-08-16 00:53:34 +00:00
SkDevice.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
SkDeviceProperties.h Mask orientation and layout correctly. 2013-05-06 22:23:08 +00:00
SkDither.h Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:09:54 +00:00
SkDocument.h Add DPI stettings to SkDocument::CreatePDF(). Tests will be added in a future cl, once DPI will be used in SkPDFDevice 2013-10-21 17:14:37 +00:00
SkDraw.h Revert "speed up A8 by creating a new entry-point in SkDraw that blits the path's coverage directly into an A8 target, regardless of the previous pixel values." 2013-11-04 20:57:36 +00:00
SkDrawFilter.h Add GPU support for roundrects 2013-04-25 15:27:00 +00:00
SkDrawLooper.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkEmptyShader.h Added print out of SkShader information to debugger 2013-01-15 20:17:47 +00:00
SkEndian.h SkBitmapHasher: use 64-bit-truncated MD5 instead of 64-bit CityHash 2013-05-03 17:35:39 +00:00
SkError.h Sanitizing source files in Housekeeper-Nightly 2013-09-05 07:01:19 +00:00
SkFixed.h Revert r10705 (ARM Skia NEON patches - 04 - Clean SkFixed / SkLONGLONG) due to 1000+ linux_layout failures (http://build.chromium.org/p/tryserver.chromium/builders/linux_layout_rel/builds/18997/steps/webkit_tests/logs/stdio) 2013-08-15 13:43:23 +00:00
SkFlate.h Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:09:54 +00:00
SkFlattenable.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkFlattenableBuffers.h Adding size parameter to read array functions 2013-10-31 18:37:50 +00:00
SkFlattenableSerialization.h Enabling validation code in serialization and adding serialization to fuzzer 2013-10-28 15:52:02 +00:00
SkFloatBits.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkFloatingPoint.h path ops -- use standard max, min, double-is-nan 2013-04-23 11:56:44 +00:00
SkFontHost.h Revert "Revert "Revert "try enabling FONTHOST_USES_FONTMGR and see what breaks""" 2013-07-31 19:36:07 +00:00
SkFontLCDConfig.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-03-13 07:01:04 +00:00
SkGeometry.h Add implicit hairline conic rendering to GPU 2013-07-12 20:15:34 +00:00
SkGraphics.h Sanitizing source files in Housekeeper-Nightly 2013-09-27 07:01:29 +00:00
SkImage.h Break up SkLazyPixelRef functionally into class hierarchy. 2013-11-06 10:08:30 +00:00
SkImageDecoder.h move SkImage::ColorType into SkColorType 2013-11-01 13:46:54 +00:00
SkImageEncoder.h Rewrite SkTRegistry to take any trivially-copyable type. 2013-09-04 17:20:18 +00:00
SkImageFilter.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkImageFilterUtils.h Added ctm matrix to GPU path 2013-08-05 16:53:50 +00:00
SkInstCnt.h Removed unused parameters 2013-03-11 18:50:03 +00:00
SkLineClipper.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkMallocPixelRef.h Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:09:54 +00:00
SkMask.h Sanitizing source files in Housekeeper-Nightly 2013-05-03 07:01:00 +00:00
SkMaskFilter.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkMath.h Add SkDivMod with a special case for ARM. 2013-09-26 19:22:54 +00:00
SkMatrix.h Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream. 2013-11-05 15:46:56 +00:00
SkMetaData.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkOSFile.h Fix bug in setting directories for tests. 2013-06-06 14:59:56 +00:00
SkPackBits.h Automatic update of all copyright notices to reflect new license terms. 2011-07-28 14:26:00 +00:00
SkPaint.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
SkPaintOptionsAndroid.h We don't flatten or unflatten SkPaintOptionsAndroid. Reproduce and fix. 2013-09-26 15:16:12 +00:00
SkPath.h Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream. 2013-11-05 15:46:56 +00:00
SkPathEffect.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkPathMeasure.h add SK_API 2013-05-08 13:25:02 +00:00
SkPathRef.h Use SkPathRef gen id for SkPath::getGenerationID 2013-10-30 18:57:55 +00:00
SkPicture.h Expose SkPicture::willPlayBackBitmaps() 2013-10-24 11:12:47 +00:00
SkPixelRef.h We want to give SkPixelRef a way to signal over to GrResourceCache that it's become pointless to keep around textures based on that SkPixelRef when its pixels change, so that it can be a good citizen and free those textures. 2013-10-24 17:44:27 +00:00
SkPoint.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
SkPostConfig.h Add SK_PREFETCH and use in SkBlurImageFilter. 2013-11-05 15:03:26 +00:00
SkPreConfig.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
SkRasterizer.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkReader32.h Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream. 2013-11-05 15:46:56 +00:00
SkRect.h Revert "speed up A8 by creating a new entry-point in SkDraw that blits the path's coverage directly into an A8 target, regardless of the previous pixel values." 2013-11-04 20:57:36 +00:00
SkRefCnt.h Allow users to build on top of, instead of beneath, SkRefCnt. 2013-10-25 18:40:24 +00:00
SkRegion.h Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream. 2013-11-05 15:46:56 +00:00
SkRRect.h Add SkRRect::transform. 2013-11-05 15:54:42 +00:00
SkScalar.h remove outdated debugging code now that we no longer support fixed point 2013-05-23 16:41:42 +00:00
SkScalarCompare.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkShader.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkSize.h must always include another skia header (unless you're SkTypes.h). In this case, 2012-11-26 20:18:00 +00:00
SkStream.h Clean up SkTypes.h. 2013-10-11 18:50:45 +00:00
SkString.h fix https://code.google.com/p/skia/issues/detail?id=1356 2013-06-19 18:52:42 +00:00
SkStringUtils.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-29 07:05:52 +00:00
SkStrokeRec.h Make GrContext cache the gpu paths 2013-11-01 15:23:44 +00:00
SkSurface.h move SkImage::ColorType into SkColorType 2013-11-01 13:46:54 +00:00
SkTArray.h Repurpose GrGLCoordTransform as GrGLProgramEffects 2013-10-03 15:17:58 +00:00
SkTDArray.h Third wave of Win64 warning cleanup 2013-10-16 17:48:11 +00:00
SkTDict.h Make SkTDArray accessors const-friendly. 2013-02-28 19:03:13 +00:00
SkTDStack.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkTemplates.h Revert r1784: SK_API on a non-concrete template is strange. 2013-10-30 22:22:05 +00:00
SkThread_platform.h explicitly initialize all entries in array of SkBaseMatrix, since we can't say 2013-04-12 15:34:53 +00:00
SkThread.h Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:09:54 +00:00
SkTileGridPicture.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-03-01 12:12:55 +00:00
SkTime.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkTInternalLList.h Fix compiler error in SkTInternalList.h 2012-12-03 23:34:32 +00:00
SkTLazy.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-04-02 07:01:34 +00:00
SkTrace.h Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SkTRegistry.h Rewrite SkTRegistry to take any trivially-copyable type. 2013-09-04 17:20:18 +00:00
SkTSearch.h One SkTSearch to rule them all. Allow key to be of different type than the array. 2013-05-17 19:05:03 +00:00
SkTypeface.h prototype for kerning api 2013-10-30 15:07:03 +00:00
SkTypes.h Clean up SkTypes.h. 2013-10-11 18:50:45 +00:00
SkUnitMapper.h Initial error handling code 2013-10-23 17:06:21 +00:00
SkUnPreMultiply.h Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:09:54 +00:00
SkUtils.h Fix a few clang errors while trying to build tools target. 2013-03-26 21:48:58 +00:00
SkWeakRefCnt.h Make it explicit that some validate methods are debug only 2013-10-02 16:42:21 +00:00
SkWriter32.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
SkXfermode.h Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00