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15 Commits

Author SHA1 Message Date
James Zern
6d2f35273d dsp/dec: TransformDCUV: use VP8TransformDC 
rather than forcing the C version; this is similar to TransformUV

Change-Id: I2778194f05fca33e9b2b71323e92947c0b395e9a
 2014-03-26 16:43:47 -07:00
James Zern
82ae1bf299 cosmetics: normalize VP8GetCPUInfo checks 
- use '!= NULL'
+ dec_neon/STORE_WHT: align '\'s

Change-Id: I0f0ce49bd9c58e771bafb24c51c070d5ebd77e53
 2014-02-28 18:47:41 -08:00
skal
8992ddb756 use static clipping tables 
(shared with mips32)
removed abs1[] table along the way

sub-1% speed-up, but still...

Change-Id: I8c29a8a0285076cb3423b01ffae9fcc465da6a81
 2014-02-13 19:32:59 -08:00
Djordje Pesut
04336fc7f8 MIPS: MIPS32r1: Optimization of function TransformOne. PATCH [4/6] 
Change-Id: I5b98e2de940977538cf91bfa2128f4d1daa5c170
 2014-01-28 20:10:43 -08:00
James Zern
5227d99146 drop: ifdef __cplusplus checks from C files 
the prototypes are already marked in the headers

Change-Id: I172fe742200c939ca32a70a2299809b8baf9b094
 2013-12-13 11:42:13 -08:00
skal
f9bbc2a034 Special-case sparse transform 
If the number of non-zero coeffs is <= 3, use a
simplified transform for luma.

Change-Id: I78a1252704228d21720d4bc1221252c84338d9c8
 2013-10-08 22:05:38 +02:00
James Zern
d640614d54 update copyright text 
rather than symlink the webm/vpx terms, use the same header as libvpx to
reference in-tree files

based on the discussion in:
https://codereview.chromium.org/12771026/

Change-Id: Ia3067ecddefaa7ee01550136e00f7b3f086d4af4
 2013-06-06 23:09:14 -07:00
skal
b7490f8553 introduce WEBP_REFERENCE_IMPLEMENTATION compile option 
This flag will make the code use no uint64, no asm, and no fancy
trick, but instead aim at being as simple and straightforward as
possible.
Main use is to help emscripten generate proper JS code.
More code needs to be simplified later.

Also: tune the BITS values to be 24 and make use of WEBP_RIGHT_JUSTIFY
Here are the typical timing for decoding a large image:

        ARM7-a:
        dwebp_justify_32_neon Time to decode picture: 3.280s
        dwebp_justify_24_neon Time to decode picture: 2.640s
        dwebp_justify_16_neon Time to decode picture: 2.723s
        dwebp_justify_8_neon Time to decode picture: 2.802s
        dwebp_justify_32 Time to decode picture: 4.264s
        dwebp_justify_24 Time to decode picture: 3.696s
        dwebp_justify_16 Time to decode picture: 3.779s
        dwebp_justify_8 Time to decode picture: 3.834s
        dwebp_32_neon Time to decode picture: 4.010s
        dwebp_24_neon Time to decode picture: 2.725s
        dwebp_16_neon Time to decode picture: 2.852s
        dwebp_8_neon Time to decode picture: 2.778s
        dwebp_32 Time to decode picture: 4.587s
        dwebp_24 Time to decode picture: 3.800s
        dwebp_16 Time to decode picture: 3.902s
        dwebp_8 Time to decode picture: 3.815s
        REFERENCE (HEAD) Time to decode picture: 3.818s

        x86_64:
        dwebp_justify_32 Time to decode picture: 0.473s
        dwebp_justify_24 Time to decode picture: 0.434s
        dwebp_justify_16 Time to decode picture: 0.450s
        dwebp_justify_8 Time to decode picture: 0.467s
        dwebp_32 Time to decode picture: 0.474s
        dwebp_24 Time to decode picture: 0.468s
        dwebp_16 Time to decode picture: 0.468s
        dwebp_8 Time to decode picture: 0.481s
        REFERENCE (HEAD) Time to decode picture: 0.436s

        i386:
        dwebp_justify_32 Time to decode picture: 0.723s
        dwebp_justify_24 Time to decode picture: 0.618s
        dwebp_justify_16 Time to decode picture: 0.626s
        dwebp_justify_8 Time to decode picture: 0.651s
        dwebp_32 Time to decode picture: 0.744s
        dwebp_24 Time to decode picture: 0.627s
        dwebp_16 Time to decode picture: 0.642s
        dwebp_8 Time to decode picture: 0.642s

Change-Id: Ie56c7235733a24f94fbfc2e4351aae36ec39c225
 2013-02-14 15:46:12 +01:00
James Zern
255c66b48f Android: only build dec_neon with NEON support 
Defining LOCAL_ARM_NEON = true can result in neon instructions being
used in portions unprotected by the cpu check.
This changes defines a WEBP_USE_NEON/WEBP_ANDROID_NEON pair similar to
the SSE2 code and MSVC.

Change-Id: Ifac010b06e42c73d5aca529baa2198c6796674bd
 2012-05-23 22:21:10 -07:00
James Zern
a0b2736d79 cosmetics & warnings 
- remove some unused functions
- move global arrays from data to read only section
- explicitly cast malloc returns; not specifically necessary, but helps
  show intent
- miscellaneous formatting

Change-Id: Ib15fe5b37fe6c29c369ad928bdc3a7290cd13c84
 2012-01-30 17:19:53 -08:00
James Zern
ad1e163a0d cosmetics: normalize copyright headers 
Change-Id: I5e2462b101e0447a4f15a1455c07131bc97a52dd
 2012-01-06 14:49:06 -08:00
James Zern
f06817aaea simplify checks for enabling SSE2 code 
also fixes build issues under vs11 which has a native arm compiler for
windows 8 targets

Change-Id: Id76c2deae9fc9de147d13ad0d34edffcb5a726c4
 2011-12-20 17:41:55 -08:00
James Zern
964387ed19 use WEBP_INLINE for inline function declarations 
removes a #define inline, objectionable in certain projects

Change-Id: Iebe0ce0b25a030756304d402679ef769e5f854d1
 2011-11-11 10:53:58 -08:00
Somnath Banerjee
d4e9f5598d NEON decode support in WebP 
Change-Id: I0d6fa456ca68468353adcd64669f1737d1446f65
 2011-09-13 16:00:47 -07:00
Pascal Massimino
e06ac0887f create a separate libwebpdsp under src/dsp 
Gathers all DSP-related function (and SSE2 implementations).
Clean-up some unwanted symbolic dependencies so that webp_encode,
webp_decode and webp_dsp are truly independent libraries.

+ opportunistic clean-up:
  * remove unneeded VP8DspInitTables(), now integrated in VP8DspInit()
  * make consistent use of VP8GetCPUInfo() in the various DspInit() funcs
  * change OUT macro to DST
 2011-09-13 12:29:44 -07:00