Bundled libwebp updated to version 0.5.1

This commit imports libwebp 0.5.1, including AUTHORS, COPYING, ChangeLog,
NEWS, PATENTS, README and src directories. In src, only includes header
and source files.

Upstream changes since 0.5.0 have been merged in.
Also updated version in qt_attribution.json.

Conflicts:
	src/3rdparty/libwebp.pri
	src/3rdparty/libwebp/qt_attribution.json
	src/3rdparty/libwebp/src/webp/config.h

Change-Id: I7d0c15400154c3b4ee8ff37665303307c4b84f9f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>

1 files changed, 177 insertions, 1 deletions

diff --git a/src/3rdparty/libwebp/ChangeLog b/src/3rdparty/libwebp/ChangeLog
index 2f8def2..99fb3c0 100644
--- a/src/3rdparty/libwebp/ChangeLog
+++ b/src/3rdparty/libwebp/ChangeLog
@@ -1,3 +1,179 @@
+deb54d9 Clarify the expected 'config' lifespan in WebPIDecode()
+c7e2d24 update ChangeLog (tag: v0.5.1-rc5)
+c7eb06f Fix corner case in CostManagerInit.
+ab7937a gif2webp: normalize the number of .'s in the help message
+3cdec84 vwebp: normalize the number of .'s in the help message
+bdf6241 cwebp: normalize the number of .'s in the help message
+06a38c7 fix rescaling bug: alpha plane wasn't filled with 0xff
+319e37b Improve lossless compression.
+447adbc 'our bug tracker' -> 'the bug tracker'
+97b9e64 normalize the number of .'s in the help message
+bb50bf4 pngdec,ReadFunc: throw an error on invalid read
+38063af decode.h,WebPGetInfo: normalize function comment
+9e8e1b7 Inline GetResidual for speed.
+7d58d1b Speed-up uniform-region processing.
+23e29cb Merge "Fix a boundary case in BackwardReferencesHashChainDistanceOnly." into 0.5.1
+0bb23b2 free -> WebPSafeFree()
+e7b9177 Merge "DecodeImageData(): change the incorrect assert" into 0.5.1
+2abfa54 DecodeImageData(): change the incorrect assert
+5a48fcd Merge "configure: test for -Wfloat-conversion"
+0174d18 Fix a boundary case in BackwardReferencesHashChainDistanceOnly.
+6a9c262 Merge "Added MSA optimized transform functions"
+cfbcc5e Make sure to consider small distances in LZ77.
+5e60c42 Added MSA optimized transform functions
+3dc28d7 configure: test for -Wfloat-conversion
+f2a0946 add some asserts to delimit the perimeter of CostManager's operation
+9a583c6 fix invalid-write bug for alpha-decoding
+f66512d make gradlew executable
+6fda58f backward_references: quiet double->int warning
+a48cc9d Merge "Fix a compression regression for images with long uniform regions." into 0.5.1
+cc2720c Merge "Revert an LZ77 boundary constant." into 0.5.1
+059aab4 Fix a compression regression for images with long uniform regions.
+b0c7e49 Check more backward matches with higher quality.
+a361151 Revert an LZ77 boundary constant.
+8190374 README: fix typo
+7551db4 update NEWS
+0fb2269 bump version to 0.5.1
+f453761 update AUTHORS & .mailmap
+3259571 Refactor GetColorPalette method.
+1df5e26 avoid using tmp histogram in PreparePair()
+7685123 fix comment typos
+a246b92 Speedup backward references.
+76d73f1 Merge "CostManager: introduce a free-list of ~10 intervals"
+eab39d8 CostManager: introduce a free-list of ~10 intervals
+4c59aac Merge "mips msa webp configuration"
+043c33f Merge "Improve speed and compression in backward reference for lossless."
+71be9b8 Merge "clarify variable names in HistogramRemap()"
+0ba7fd7 Improve speed and compression in backward reference for lossless.
+0481d42 CostManager: cache one interval and re-use it when possible
+41b7e6b Merge "histogram: fix bin calculation"
+96c3d62 histogram: fix bin calculation
+fe9e31e clarify variable names in HistogramRemap()
+ce3c824 disable near-lossless quantization if palette is used
+e11da08 mips msa webp configuration
+5f8f998 mux: Presence of unknown chunks should trigger VP8X chunk output.
+cadec0b Merge "Sync mips32 and dsp_r2 YUV->RGB code with C verison"
+d963775 Compute the hash chain once and for all for lossless compression.
+50a4866 Sync mips32 and dsp_r2 YUV->RGB code with C verison
+eee788e Merge "introduce a common signature for all image reader function"
+d77b877 introduce a common signature for all image reader function
+ca8d951 remove some obsolete TODOs
+ae2a722 collect all decoding utilities from examples/ in libexampledec.a
+0b8ae85 Merge "Move DitherCombine8x8 to dsp/dec.c"
+77cad88 Merge "ReadWebP: avoid conversion to ARGB if final format is YUVA"
+ab8d669 ReadWebP: avoid conversion to ARGB if final format is YUVA
+f8b7ce9 Merge "test pointer to NULL explicitly"
+5df6f21 test pointer to NULL explicitly
+77f21c9 Move DitherCombine8x8 to dsp/dec.c
+c9e6d86 Add gradle support
+c65f41e Revert "Add gradle support"
+bf731ed Add gradle support
+08333b8 WebPAnimEncoder: Detect when canvas is modified, restore only when needed.
+0209d7e Merge "speed-up MapToPalette() with binary search"
+fdd29a3 speed-up MapToPalette() with binary search
+cf4a651 Revert "Refactor GetColorPalette method."
+0a27aca Merge changes Idfa8ce83,I19adc9c4
+f25c440 WebPAnimEncoder: Restore original canvas between multiple encodes.
+169004b Refactor GetColorPalette method.
+576362a VP8LDoFillBitWindow: support big-endian in fast path
+ac49e4e bit_reader.c: s/VP8L_USE_UNALIGNED_LOAD/VP8L_USE_FAST_LOAD/
+d39ceb5 VP8LDoFillBitWindow: remove stale TODO
+2ec2de1 Merge "Speed-up BackwardReferencesHashChainDistanceOnly."
+3e023c1 Speed-up BackwardReferencesHashChainDistanceOnly.
+f2e1efb Improve near lossless compression when a prediction filter is used.
+e15afbc dsp.h: fix ubsan macro name
+e53c9cc dsp.h: add WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW
+af81fdb utils.h: quiet -fsanitize=undefined warnings
+ea0be35 dsp.h: remove utils.h include
+cd276ae utils/*.c: ../utils/utils.h -> ./utils.h
+c892713 utils/Makefile.am: add some missing headers
+ea24e02 Merge "dsp.h: add WEBP_UBSAN_IGNORE_UNDEF"
+369e264 dsp.h: add WEBP_UBSAN_IGNORE_UNDEF
+0d020a7 Merge "add runtime NEON detection"
+5ee2136 Merge "add VP8LAddPixels() to lossless.h"
+47435a6 add VP8LAddPixels() to lossless.h
+8fa6ac6 remove two ubsan warnings
+74fb56f add runtime NEON detection
+4154a83 MIPS update to new Unfilter API
+c80b9fc Merge "cherry-pick decoder fix for 64-bit android devices"
+6235147 cherry-pick decoder fix for 64-bit android devices
+d41b8c4 configure: test for -Wformat-* w/-Wformat present
+5f95589 Fix WEBP_ALIGN in case the argument is a pointer to a type larger than a byte.
+2309fd5 replace num_parts_ by num_parts_minus_one_ (unsigned)
+9629f4b SimplifySegments: quiet -Warray-bounds warning
+de47492 Merge "update the Unfilter API in dsp to process one row independently"
+2102ccd update the Unfilter API in dsp to process one row independently
+e3912d5 WebPAnimEncoder: Restore canvas before evaluating blending possibility.
+6e12e1e WebPAnimEncoder: Fix for single-frame optimization.
+602f344 Merge changes I1d03acac,Ifcb64219
+95ecccf only apply color-mapping for alpha on the cropped area
+47dd070 anim_diff: Add an experimental option for max inter-frame diff.
+aa809cf only allocate alpha_plane_ up to crop_bottom row
+31f2b8d WebPAnimEncoder: FlattenSimilarPixels(): look for similar
+774dfbd perform alpha filtering within the decoding loop
+a4cae68 lossless decoding: only process decoded row up to last_row
+238cdcd Only call WebPDequantizeLevels() on cropped area
+cf6c713 alpha: preparatory cleanup
+b95ac0a Merge "VP8GetHeaders(): initialize VP8Io with sane value for crop/scale dimensions"
+8923139 VP8GetHeaders(): initialize VP8Io with sane value for crop/scale dimensions
+5828e19 use_8b_decode -> use_8b_decode_
+8dca024 fix bug in alpha.c that was triggering a memory error in incremental mode
+9a950c5 WebPAnimEncoder: Disable filtering when blending is used with lossy encoding.
+eb42390 WebPAnimEncoder: choose max diff for framerect based on quality.
+ff0a94b WebPAnimEncoder lossy: ignore small pixel differences for frame rectangles.
+f804008 gif2webp: Remove the 'prev_to_prev_canvas' buffer.
+6d8c07d Merge "WebPDequantizeLevels(): use stride in CountLevels()"
+d96fe5e WebPDequantizeLevels(): use stride in CountLevels()
+ec1b240 WebPPictureImport*: check output pointer
+c076876 Merge "Revert "Re-enable encoding of alpha plane with color cache for next release.""
+41f14bc WebPPictureImport*: check src pointer
+64eed38 Pass stride parameter to WebPDequantizeLevels()
+97934e2 Revert "Re-enable encoding of alpha plane with color cache for next release."
+e88c4ca fix -m 2 mode-cost evaluation (causing partition0 overflow)
+4562e83 Merge "add extra meaning to WebPDecBuffer::is_external_memory"
+abdb109 add extra meaning to WebPDecBuffer::is_external_memory
+875aec7 enc_neon,cosmetics: break long comment
+71e856c GetMBSSIM,cosmetics: fix alignment
+a90edff fix missing 'extern' for SSIM function in dsp/
+423ecaf move some SSIM-accumulation function for dsp/
+f08e662 Merge "Fix FindClosestDiscretized in near lossless:"
+0d40cc5 enc_neon,Disto4x4: remove an unnecessary transpose
+e8feb20 Fix FindClosestDiscretized in near lossless:
+8200643 anim_util: quiet static analysis warning
+a6f23c4 Merge "AnimEncoder: Support progress hook and user data."
+a519377 Merge "Near lossless feature: fix some comments."
+da98d31 AnimEncoder: Support progress hook and user data.
+3335713 Near lossless feature: fix some comments.
+0beed01 cosmetics: fix indent after 2f5e898
+6753f35 Merge "FTransformWHT optimization."
+6583bb1 Improve SSE4.1 implementation of TTransform.
+7561d0c FTransformWHT optimization.
+7ccdb73 fix indentation after patch #328220
+6ec0d2a clarify the logic of the error path when decoding fails.
+8aa352b Merge "Remove an unnecessary transposition in TTransform."
+db86088 Merge "remove useless #include"
+9960c31 Remove an unnecessary transposition in TTransform.
+6e36b51 Small speedup in FTransform.
+9dbd4aa Merge "fix C and SIMD flags completion."
+e60853e Add missing common_sse2.h file to makefile.unix
+696eb2b fix C and SIMD flags completion.
+2b4fe33 Merge "fix multiple allocation for transform buffer"
+2f5e898 fix multiple allocation for transform buffer
+bf2b4f1 Regroup common SSE code + optimization.
+4ed650a force "-pass 6" if -psnr or -size is used but -pass isn't.
+3ef1ce9 yuv_sse2: fix -Wconstant-conversion warning
+a7a03e9 Merge changes I4852d18f,I51ccb85d
+5e122bd gif2webp: set enc_options.verbose = 0 w/-quiet
+ab3c258 anim_encode,DefaultEncoderOptions: init verbose
+8f0dee7 Merge "configure: fix builtin detection w/-Werror"
+4a7b85a cmake: fix builtin detection w/-Werror
+b74657f configure: fix builtin detection w/-Werror
+3661b98 Add a CMakeLists.txt
+75f4af4 remove useless #include
+6c1d763 avoid Yoda style for comparison
+8ce975a SSE optimization for vector mismatch.
+7db5383 Merge tag 'v0.5.0'
+37f0494 update ChangeLog (tag: v0.5.0-rc1, tag: v0.5.0, origin/0.5.0, 0.5.0)
 7e7b6cc faster rgb565/rgb4444/argb output
 4c7f565 update NEWS
 1f62b6b update AUTHORS
@@ -140,7 +316,7 @@ f7c507a Merge "remove unnecessary #include "yuv.h""
 7861578 for ReadXXXX() image-readers, use the value of pic->use_argb
 14e4043 remove unnecessary #include "yuv.h"
 469ba2c vwebp: fix incorrect clipping w/NO_BLEND
-4b9186b update issue tracker url (master)
+4b9186b update issue tracker url
 d64d376 change WEBP_ALIGN_CST value to 31
 f717b82 vp8l.c, cosmetics: fix indent after 95509f9
 927ccdc Merge "fix alignment of allocated memory in AllocateTransformBuffer"