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495 Commits

Author SHA1 Message Date
James Zern
fbdcef2401 dsp/enc*.c: rework WEBP_USE_<arch> ifdef 
add a dummy init rather than repeating the '#ifdef WEBP_USE_...'
pattern.

Change-Id: I0cf40b500f9b3eed55a3211213db180c7c0dd43b
 2015-03-20 19:19:46 -07:00
James Zern
66de69c1fe dsp/dec*.c: rework WEBP_USE_<arch> ifdef 
add a dummy init rather than repeating the '#ifdef WEBP_USE_...'
pattern.

Change-Id: I319bc7714f36b8a3d8b35f6474e5592a439aaf24
 2015-03-20 19:19:37 -07:00
James Zern
48e4ffd15e dsp/cost*.c: rework WEBP_USE_<arch> ifdef 
add a dummy init rather than repeating the '#ifdef WEBP_USE_...'
pattern.

Change-Id: Ie9bee5eaf9daebe0909ab1dda1cf1aa4ee1ef03e
 2015-03-20 19:18:50 -07:00
James Zern
29fd6f90c0 dsp/argb*.c: rework WEBP_USE_<arch> ifdef 
add a dummy init rather than repeating the '#ifdef WEBP_USE_...'
pattern.

Change-Id: I46b89909a0279172d37dbda70f731c7b9f052dad
 2015-03-20 19:18:50 -07:00
James Zern
80ff38130e dsp/alpha*.c: rework WEBP_USE_<arch> ifdef 
add a dummy init rather than repeating the '#ifdef WEBP_USE_...'
pattern.

Change-Id: I9e7f187daffe1a3b1bc92953dce980c38d1a6269
 2015-03-20 19:18:41 -07:00
Pascal Massimino
e9570dd987 stub for SSE4.1 support. 
Change-Id: I0c845a98d2871cc8907ff7b914bab7747a92c7ed
 2015-03-20 00:26:35 -07:00
James Zern
cabf4bd2bc dsp: add sse4.1 detection 
bit 19 in ecx
no targets or code

https://software.intel.com/en-us/articles/using-cpuid-to-detect-the-presence-of-sse-41-and-sse-42-instruction-sets

Change-Id: Ie61b004dd5b6a3639b30bd9d2a09e6d7359b8040
 2015-03-18 19:16:47 -07:00
Sam Clegg
ac4f5784a0 Disable NEON code on Native Client 
The NEON assember in libwebp has not yet been ported
to Native Client. This changes disables it.
Related issue:
https://code.google.com/p/nativeclient/issues/detail?id=3205

Change-Id: I200291db7aa79d40c1f10cff7622c9b8599e6886
 2015-03-10 16:17:25 -07:00
Djordje Pesut
241bb5d9d9 MIPS: dspr2: added optimization for TrueMotion 
affected functions:
      TM4 - TrueMotion4
      TM8uv - TrueMotion8
      TM16 - TrueMotion16

Change-Id: Iff4377c4b0ae94716789c03fe1cd5bfd91f79188
 2015-02-26 10:22:19 +01:00
Djordje Pesut
b5e79422d5 MIPS: dspr2: Added optimization for some convert functions 
affected functions:
      VP8LConvertBGRAToRGBA4444_C
      VP8LConvertBGRAToRGB565_C
      VP8LConvertBGRAToBGR_C

Change-Id: I81513d242d33ebb9fef397ee6a2ca75d17f66e97
 2015-02-24 10:51:34 +01:00
Djordje Pesut
0f595db60c MIPS: dspr2: Added optimization for some convert functions 
affected functions:
  VP8LConvertBGRAToRGB_C
  VP8LConvertBGRAToRGBA_C

Change-Id: I5f25795c385688f2432d0710296e589f3793cb2b
 2015-02-23 17:44:06 +01:00
Djordje Pesut
8a218b4a96 MIPS: [mips32|dspr2]: GetResidualCost rebased 
Change-Id: Ie15524c773f7a8c79e002097881a508187ca7cc6
 2015-02-23 10:43:42 +01:00
James Zern
602a00f93f fix iOS arm64 build with Xcode 6.3 
the standard vtbl functions are available there [1][2].
based on a patch from: aaroncrespo
fixes issue #243.

[1]
http://adcdownload.apple.com//Developer_Tools/Xcode_6.3_beta/Xcode_6.3_beta_Release_Notes.pdf
[2] Apple LLVM Compiler Version 6.1
- Xcode 6.3 updates the Apple LLVM compiler to version 6.1.0.
[...]
Support for the arm64 architecture has been significantly revised to
align with ARM's implementation, where the most visible impact is that a
few of the vector intrinsics have changed to match ARM's specifications.

Change-Id: I79a0016f44b9dbe36d0373f7f00a50ab3c2ca447
 2015-02-19 12:16:58 -08:00
Pascal Massimino
2382050748 1-2% faster encoding by removing an indirection in GetResidualCost() 
The MIPS code for cost is not updated yet, that's why i keep Residual::*cost
around for now. Should be removed in favor of *costs later.

Change-Id: Id1d09a8c37ea8c5b34ad5eb8811d6a3ec6c4d89f
 2015-02-19 08:44:35 +01:00
Djordje Pesut
eddb7e70be MIPS: dspr2: added otpimization for DC8uv, DC8uvNoTop and DC8uvNoLeft 
added macros for load/store

Change-Id: I151d4d49bf1fab87fc3a82cb8e8e0835fe10b690
 2015-02-18 18:24:10 +01:00
Djordje Pesut
73ba29158f MIPS: dspr2: added optimization for functions RD4 and LD4 
Change-Id: I71216c1300f4eb254de4ae940ea9dcdba50aa080
 2015-02-18 15:11:34 +01:00
Pascal Massimino
c7129da5b6 Merge "4-5% faster encoding using SSE2 for GetResidualCost" 2015-02-18 04:46:53 -08:00
Djordje Pesut
94380d00d9 MIPS: dspr2: added optimizaton for functions VE4 and DC4 
Change-Id: I118adc6d3872742d8b1f9dbac438cba6fc90b7a9
 2015-02-18 11:25:08 +01:00
Pascal Massimino
2a407092ab 4-5% faster encoding using SSE2 for GetResidualCost 
new file: cost_sse2.c

Change-Id: I4896c07f5ff2443ef743f4435fe2758d95a672ed
 2015-02-18 09:41:02 +01:00
James Zern
17e1986214 Merge "MIPS: dspr2: added optimization for simple filtering functions" 2015-02-17 14:57:05 -08:00
pascal massimino
3ec404c47a Merge "dsp: normalize WEBP_TSAN_IGNORE_FUNCTION usage" 2015-02-14 01:57:08 -08:00
James Zern
b969f5dfac dsp: normalize WEBP_TSAN_IGNORE_FUNCTION usage 
the attribute is only necessary in one location; remove it from the
prototypes.

Change-Id: I3820a3c34fbb029fd7ac69a1b0a9b76091bdbde2
 2015-02-13 15:23:40 -08:00
Djordje Pesut
d7b8e71126 MIPS: dspr2: added optimization for simple filtering functions 
affected functions: SimpleVFilter16, SimpleHFilter16,
                    SimpleVFilter16i and SimpleHFilter16i

noticed bug in FilterLoop26 (fix included in this patch)

Change-Id: I72d9c1e45cbac6393eba52bb549b04924d463e30
 2015-02-13 11:18:43 +01:00
Djordje Pesut
42a8a6280c MIPS: dspr2: Added optimization for function VP8LTransformColorInverse_C 
Change-Id: I8b60e22c9f6c0badab6267a33751dfc28750f457
 2015-02-13 08:57:20 +01:00
James Zern
3030f11525 Merge "dsp/mips: add some missing TSan annotations" 2015-02-12 14:55:32 -08:00
pascal massimino
dfcf4593fe Merge "MIPS: dspr2: Added optimization for function VP8LAddGreenToBlueAndRed_C" 2015-02-12 14:48:17 -08:00
James Zern
55c75a25f0 dsp/mips: add some missing TSan annotations 
Change-Id: I3c832aefdeac26c6c75c35b19b45c1a2f67493c5
 2015-02-12 14:36:33 -08:00
Djordje Pesut
2cb879f0c6 MIPS: dspr2: Added optimization for function VP8LAddGreenToBlueAndRed_C 
Change-Id: If897c6c2f1c4b8405789298e135d6a1e4bf13012
 2015-02-12 09:06:49 +01:00
James Zern
e15560107c move some cost tables from enc/ to dsp/ 
removes circular dependency between dsp and enc.

since:
a987fae MIPS: dspr2: added optimization for function GetResidualCost

Change-Id: Ifeb8fc02de89e2ba982ed7ffacd925d649bfec3c
 2015-02-11 16:10:06 -08:00
pascal massimino
39537d7cfe Merge "VP8LDspInitMIPSdspR2: add missing TSan annotation" 2015-02-10 00:02:41 -08:00
James Zern
43fd3543df VP8LDspInitMIPSdspR2: add missing TSan annotation 
Change-Id: Ic0d84e95daf063976b40fb5ba1e94d3547e2afba
 2015-02-09 23:55:30 -08:00
pascal massimino
c7233dfcdc Merge "VP8LDspInit: remove memcpy" 2015-02-09 23:48:44 -08:00
James Zern
35579a4902 VP8LDspInit: remove memcpy 
without this change the TSan annotation is useless

Change-Id: Ief511379f3aad75889815d4fe8362aed5c1abac7
 2015-02-09 23:41:24 -08:00
James Zern
97f6aff874 VP8YUVInit: add missing TSan annotation 
Change-Id: I7f8868de425e1aac3721b3e328844725104d14db
 2015-02-09 22:50:31 -08:00
James Zern
f9016d6662 dsp/enc::InitTables: add missing TSan annotation 
Change-Id: I262b9071417a0ec502c7c0380f27da6413cc74e4
 2015-02-09 22:40:45 -08:00
James Zern
e3d9771aa1 VP8EncDspCostInit*: add missing TSan annotations 
Change-Id: I4cdb84bc8c9a8c6aa34b5773c8fb69e5810a9809
 2015-02-09 22:39:14 -08:00
Djordje Pesut
309b790867 MIPS: mips32: Added optimization for function SetResidualCoeffs 
Change-Id: If67c10285df71ba7dd1aff6c24c2145c280dd2bf
 2015-02-09 13:17:49 +01:00
Pascal Massimino
a987faedfa MIPS: dspr2: added optimization for function GetResidualCost 
set/get residual C functions moved to new file in src/dsp
mips32 version of GetResidualCost moved to new file

Change-Id: I7cebb7933a89820ff28c187249a9181f281081d2
 2015-02-07 02:13:26 -08:00
James Zern
c24d8f144f cosmetics: upsampling_sse2: add const to some casts 
source pointers are often cast to __m128*, retain the const in those
cases

Change-Id: Ia6df6690c85f580b20f19ce85cc6ec7b52620aee
 2015-02-05 23:51:57 -08:00
James Zern
1829c42c58 cosmetics: lossless_sse2: add const to some casts 
source pointers are often cast to __m128*, retain the const in those
cases

Change-Id: I2405b18c6bb829b76c3a9814057ccbe6e14220d9
 2015-02-05 23:51:44 -08:00
James Zern
183168f332 cosmetics: enc_sse2: add const to some casts 
source pointers are often cast to __m128*, retain the const in those
cases

Change-Id: Ib85d63abbb9fc33096f893c2524d3ce8ae3ebd03
 2015-02-05 23:51:29 -08:00
James Zern
860badcacc cosmetics: dec_sse2: add const to some casts 
source pointers are often cast to __m128*, retain the const in those
cases

Change-Id: I77decb55f1382bea4b646a11b77dfa40bf1ef94d
 2015-02-05 23:51:16 -08:00
James Zern
0254db9793 cosmetics: argb_sse2: add const to some casts 
source pointers are often cast to __m128*, retain the const in those
cases

Change-Id: I87fa2de11dafcc77767aab64e13b8c5585ebf5cd
 2015-02-05 23:51:07 -08:00
James Zern
1aadf856c9 cosmetics: alpha_processing_sse2: add const to some casts 
source pointers are often cast to __m128*, retain the const in those
cases

Change-Id: I00ba15af2f43d125ceb2620e82fd43d420fbb9d3
 2015-02-05 23:50:39 -08:00
Pascal Massimino
19f0ba0eb9 Implement true-motion prediction in SSE2 
(along with DC/HE/VE for chroma/luma16)

Overall effect is ~1% faster decoding.

Change-Id: I90917e050d61874cbc8da0e88f26b5dd6131c265
 2015-02-04 17:02:22 +01:00
Pascal Massimino
774d4cb758 make VP8PredLuma16[] array non-const 
Change-Id: I0ce7e4e847f9fffefb6544db9636068442a2d264
 2015-02-04 17:00:22 +01:00
Djordje Pesut
6ce296da12 MIPS: dspr2: Added optimization for function CollectHistogram 
Change-Id: Id6b87ea1c9d21fee9494ad6c53ffc84ef60d5974
 2015-02-03 14:11:20 +01:00
James Zern
b7de794622 Merge "lossless_neon: enable subtract green for aarch64" 2015-02-02 16:01:40 -08:00
Pascal Massimino
77724f70e9 SSE2 version of GradientUnfilter 
somewhat 1-2% faster decoder for lossy+alpha

Change-Id: Ib317e26e9fcb8d37af02668ffbfccc4664e659fe
 2015-01-31 23:18:00 +01:00
James Zern
416e1cea9b lossless_neon: enable subtract green for aarch64 
similar to:
1ba61b0 enable NEON intrinsics in aarch64 builds

vtbl1_u8 is available everywhere but Xcode-based iOS arm64 builds, use
vtbl1q_u8 there.

performance varies based on the input, 1-3% on encode was observed

Change-Id: Ifec35b37eb856acfcf69ed7f16fa078cd40b7034
 2015-01-31 11:32:05 -08:00
Pascal Massimino
022d2f886c add SSE2 variants for alpha filtering functions 
The 'inverse' variants are harder to parallelize, since
the result of filtering is used for prediction.
The 'direct' way is relatively easier.

The heavy bottleneck left for optimization is still GradientUnfilter()

Change-Id: I358008f492a887e8fff6600cb27857b18dee86e9
 2015-01-29 08:46:22 +01:00
Pascal Massimino
7afdaf8496 Alpha coding: reorganize the filter/unfiltering code 
Move the filtering code to their own dsp/ spot
New function: VP8FiltersInit()

Change-Id: I0b2041eab42346c59b972f2575b05509e6a8f7b1
 2015-01-28 08:02:41 +01:00
Djordje Pesut
da0912126b MIPS: dspr2: Added optimization for function FTransformWHT 
Change-Id: I918366cd1908304068c66da9965efb0aa63320cd
 2015-01-19 10:15:13 +01:00
pascal massimino
daeb276a2b Merge "MIPS: dspr2: Added optimization for MultARGBRow function" 2015-01-17 08:56:01 -08:00
James Zern
0de5f33e31 dsp/cpu: (msvs) add include for __cpuidex 
and only use it on x86 / x64 where it's available.
has the side-effect of quieting a msvs /analyze warning:
C6001: Using uninitialized memory 'cpu_info'.

Change-Id: Iae51be3b22b2ee949cfc473eeea9fd9fb6b3c2cb
 2015-01-16 18:16:10 -08:00
Djordje Pesut
7d850f7b9a MIPS: dspr2: Added optimization for MultARGBRow function 
Change-Id: Ide549ae0d80413bea8c19fe091d97bffe8b17985
 2015-01-16 15:56:34 +01:00
Djordje Pesut
5487529368 MIPS: dspr2: added optimization for function QuantizeBlock 
Change-Id: Id217116890b7408d23464216608ce67ae545688a
 2015-01-16 12:51:13 +01:00
James Zern
4fbe9cf202 dsp/cpu: (msvs) avoid immintrin.h on _M_ARM 
_xgetgv() isn't relevant there anyway

broken since:
279e661 Merge "dsp/cpu: add include for _xgetbv() w/MSVS"

Change-Id: Iaa7bc0c5be9c06bfffab39e194c64c09bf5b5a27
 2015-01-15 23:04:08 -08:00
Pascal Massimino
3fd59039bd simplify/reorganize arguments for CollectColorBlueTransforms 
and other various call sites too.

Change-Id: Icb8f828dfe25672662de18d0e48e7d3144b1f38d
 2015-01-15 18:12:12 -08:00
Djordje Pesut
a7e7caa486 MIPS: dspr2: added optimization for function TransformColorRed 
added new function CollectColorRedTransforms to C, which calls
TransformColorRed and it is realized via pointer to function

Change-Id: Ia68d73bfcf1ca2cb443dc2825910946221f87835
 2015-01-15 09:32:09 +01:00
pascal massimino
2cb39180cc Merge "MIPS: dspr2: added optimization for function TransformColorBlue" 2015-01-15 00:06:01 -08:00
pascal massimino
279e66138d Merge "dsp/cpu: add include for _xgetbv() w/MSVS" 2015-01-15 00:05:35 -08:00
James Zern
b6c0428e8c dsp/cpu: add include for _xgetbv() w/MSVS 
explicitly add immintrin.h instead of transitively picking it up via
windows.h presumably. makes the code easier to move around.

Change-Id: If70d5143ac94fc331da763ce034358858e460e06
 2015-01-14 23:31:35 -08:00
Djordje Pesut
7b16197361 MIPS: dspr2: added optimization for function TransformColorBlue 
added new function CollectColorBlueTransforms to C, which calls
TransformColorBlue and it is realized via pointer to function

Change-Id: Ia488b7a7a689223b5d33aae9724afab89b97fced
 2015-01-13 10:39:38 +01:00
James Zern
d7c4b02a57 cpu: fix AVX2 detection for gcc/clang targets 
ecx needs to be set to 0; the visual studio builds were already doing
this.

https://software.intel.com/en-us/articles/how-to-detect-new-instruction-support-in-the-4th-generation-intel-core-processor-family

Change-Id: I95efb115b4d50bbdb6b14fca2aa63d0a24974e55
 2015-01-12 17:58:57 -08:00
Pascal Massimino
d581ba40ba follow-up: clean up WebPRescalerXXX dsp function 
by removing redundant RFIX macros and using a plain-C fallback.

Change-Id: I52436c672bf20780b6fe3bcf43fe73e1abac10ff
 2015-01-12 15:26:55 -08:00
James Zern
f8740f0d6c dsp: s/USE_INTRINSICS/WEBP_USE_INTRINSICS/ 
for consistency with other defines shared across modules

Change-Id: I30cdb9f892e9ea48265883f560500ffb1d6799ee
 2015-01-12 14:27:36 -08:00
Pascal Massimino
ab66becaae introduce a separate WebPRescalerDspInit to initialize pointers 
so that we keep the details of WebPRescaler in utils/rescaler.c
when possible.

Change-Id: Ib6c1029a09b84cbc7a7d2f70dafa4d4d9132cecc
 2015-01-12 13:58:30 -08:00
pascal massimino
cbcdd5ffaf Merge "move rescaler functions to rescaler* files in src/dsp/" 2015-01-10 05:41:45 -08:00
pascal massimino
bf586e8844 Merge changes I230b3532,Idf3057a7 
* changes:
  enable NEON for Windows ARM builds
  Makefile.vc: add rudimentary Windows ARM support
 2015-01-10 02:14:48 -08:00
James Zern
4f43d38ca8 enable NEON for Windows ARM builds 
Change-Id: I230b353214ce44ab29ffd2df6ccd14345d6578e8
 2015-01-09 19:11:55 -08:00
James Zern
e7c5954c10 dec_neon: remove returns from void functions 
Change-Id: I3c66a5dfe3de2bb3653cbbf1b92b0328aba62881
 2015-01-09 18:08:05 -08:00
Djordje Pesut
cbcbedd0de move rescaler functions to rescaler* files in src/dsp/ 
Change-Id: I906add1b1010a59ebfcc2dd81e15745433cc206b
 2015-01-09 16:47:09 +01:00
Djordje Pesut
a28c4b363d MIPS: move WORK_AROUND_GCC define to appropriate place 
Change-Id: I3055eca57dc4e9d39533a5b8170bbf7af9cd818f
 2015-01-08 15:55:41 +01:00
Djordje Pesut
012d2c60fa MIPS: dspr2: added optimization for functions SSEAxB 
list of optimized functions: SSE16x16, SSE8x8, SSE16x8, SSE4x4

Change-Id: Ie99e7cdd73b0d4ff855977315a5d0db9ffaa5f04
 2015-01-08 13:49:17 +01:00
Djordje Pesut
9241ecf45d MIPS: dspr2: added optimization for function Average 
Change-Id: I7ca316bc3f5fbdaf8dcaf9a2d2227a5134bf4f63
 2015-01-08 11:46:15 +01:00
pascal massimino
c6d3292738 argb_sse2: cosmetics 
clarify some variable names in PackARGB() + add some comments

Change-Id: I2bb91d6c52dcbcdebe0f92d5f2136c2d7d11af2a
 2015-01-08 00:18:54 -08:00
James Zern
67f601cd46 make the 'last_cpuinfo_used' variable names unique 
allows the sources to be #include'd in some hackish builds (don't do
that!)

Change-Id: I0c7a43acbebd0e2d5068845e6daa8ce47361cd91
 2015-01-07 23:38:53 -08:00
Pascal Massimino
9592053859 Merge "multi-thread fix: lock each entry points with a static var" 2015-01-07 00:03:51 -08:00
Pascal Massimino
4c1b300ada Merge "SSE2 implementation of VP8PackARGB" 2015-01-06 23:53:50 -08:00
James Zern
04c20e75ea Merge "MIPS: dspr2: added optimization for function Intra4Preds" 2015-01-06 16:15:10 -08:00
Pascal Massimino
a437694a17 multi-thread fix: lock each entry points with a static var 
we compare the current VP8GetCPUInfo pointer to the last used.
This is less code overall and each implementation is still
testable separately (by just changing VP8GetCPUInfo, but not
a separate threads!)

Change-Id: Ia13fa8ffc4561a884508f6ab71ed0d1b9f1ce59b
 2015-01-05 07:48:49 -08:00
Pascal Massimino
ca7f60db5f SSE2 implementation of VP8PackARGB 
Change-Id: I40c0e26a6a2701216e4ddebcf793aa535677f437
 2015-01-05 05:17:51 -08:00
Pascal Massimino
72d573f693 simplify the PackARGB signature 
Change-Id: I51570e362126b2681f93211a4f59a3fedb5fd4b5
 2015-01-05 02:10:04 -08:00
James Zern
f8abb112f2 Merge changes I109ec4d9,I73fe7743 
* changes:
  dec_neon: add DC8uvNoTop / DC8uvNoLeft
  dec_neon: add DC8uv
 2014-12-23 09:11:22 -08:00
Djordje Pesut
ae2188a435 MIPS: dspr2: added optimization for function Intra4Preds 
Change-Id: Ie2a23c356a8715817b020fbee2b40e878e2946de
 2014-12-23 17:32:27 +01:00
James Zern
14108d7878 dec_neon: add DC8uvNoTop / DC8uvNoLeft 
adds do_top/do_left flags to DC8uv; ~88% / ~92% faster respectively
no change in DC8uv speed.

Change-Id: I109ec4d9ad13c9db64516e98ed4693a21a3e9b54
 2014-12-22 15:47:38 -05:00
James Zern
d8340da756 dec_neon: add DC8uv 
~87% faster.

Change-Id: I73fe77437792f1361ce8ab0b411132c6ec0fa021
 2014-12-22 14:36:45 -05:00
Djordje Pesut
7ce8788b06 MIPS: dspr2: added optimization for function MakeARGB32 
inline function MakeARGB32 calls changed to call
via pointers to functions which make (a)rgb for
entire row

Change-Id: Ia4bd4be171a46c1e1821e408b073ff5791c587a9
 2014-12-22 12:31:36 +01:00
Pascal Massimino
87c3d53180 method=0: Don't evaluate any predictor 
and apply Paeth predictor (predictor#11) for the low effort (m=0) mode.

For 1000 image PNG corpus (m=0), this change yields speedup of 25% at lower quality
range and about 10% for higher quality range.

Change-Id: I0f036b8ffe45c241e63a067cbf01527b13d8de93
 2014-12-17 18:41:08 +01:00
Pascal Massimino
31a9cf6417 Speedup WebP lossless compression for low effort (m=0) mode with following: 
- Disable Cross-Color transform.
- Evaluate predictors #11 (paeth), #12 and #13 only.

Change-Id: I857264c85c61c3957d4fb45ae32d261d947c8bed
 2014-12-17 11:52:11 +01:00
Djordje Pesut
9275d91c79 MIPS: dspr2: added optimization for function TrueMotion 
Change-Id: Id006d9591c0c922e28f7f4c01e4006f0f07bdd56
 2014-12-12 14:38:55 +01:00
James Zern
a3946b8956 enc_neon: fix building with non-Xcode clang (iOS) 
check for __apple_build_version__ to distinguish the two; a version
check could work as Apple bumped Xcode's to 5.x/6.x, but it's unclear
how upstream will deal with their versioning as they go 3.6+, so avoid
it for now.

Change-Id: I67cda67c4f68e262a92d805a63cc1496374be063
 2014-12-10 15:50:26 -08:00
Pascal Massimino
8ed9c00d5e Merge "simplify the Histogram struct, to only store max_value and last_nz" 2014-12-10 02:02:05 -08:00
Pascal Massimino
bad775715a simplify the Histogram struct, to only store max_value and last_nz 
we don't need to store the whole distribution in order to compute the alpha

Later, we can incorporate the max_value / last_non_zero bookkeeping
in SSE2 directly.

Change-Id: I748ccea4ac17965d7afcab91845ef01be3aa3e15
 2014-12-10 10:44:57 +01:00
Djordje Pesut
3cca0dc7f0 MIPS: dspr2: Added optimization for DCMode function 
Change-Id: I8ea31907c1ea1259ec4db8cee1a479bd13a025a1
 2014-12-09 13:58:39 +01:00
Djordje Pesut
37e395fd1c MIPS: fix functions to use generic BPS istead of hardcoded value 
Change-Id: I2d68abef886eff7f8df230f155b758dccd7d04fd
 2014-12-05 15:55:47 +01:00
Pascal Massimino
4a279a680e cosmetics: add some missing != NULL comparisons 
Change-Id: I55f8da527e5e8ee4b49c7e7aa0d61ea4a6c80904
 2014-12-04 14:54:11 +01:00
Pascal Massimino
66ad372500 factorize BPS definition in dsp.h and add VP8Copy16x8 
Change-Id: Id73a1e968c96455808755df4d131d74e3e2e135d
 2014-12-04 13:45:14 +01:00
Pascal Massimino
57606047ec encoder: switch BPS to 32 instead of 16 
this is a first step to unifying encoding/decoding cache stride
and possibly sharing the prediction functions in dsp/

With this layout, there's a little (~7%) space lost with unused samples.
But no speed change was observed.

Change-Id: I016df8cad41bde5088df3579e6ad65d884ee711e
 2014-12-04 09:17:18 +01:00