Commit Graph

1866 Commits

Author SHA1 Message Date
James Zern
51f406a5d7 lossless_sse2: relocate VP8LDspInitSSE2 proto
this is in line with the other dsp files and silences a build warning.

Change-Id: I03ee3032c11d4c731cc10bfa0a2dcb6866756ba2
2014-03-27 15:07:43 -07:00
skal
0f4f721b12 separate SSE2 lossless functions into its own file
expose the predictor array as function pointers instead
of each individual sub-function

+ merged Average2() into ClampedAddSubtractHalf directly
+ unified the signature as "VP8LProcessBlueAndRedFunc"

no speed diff observed

Change-Id: Ic3c45dff11884a8330a9ad38c2c8e82491c6e044
2014-03-27 21:43:55 +01:00
skal
514fc251df VP8LConvertFromBGRA: use conversion function pointers
Change-Id: I863b97119d7487e4eef337e5df69e1ae2a911d4c
2014-03-27 09:00:35 +01:00
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
skal
defc8e1b01 Merge "fix out-of-bound read during alpha-plane decoding" 2014-03-26 15:22:42 -07:00
James Zern
fbed36433d Merge "dsp: reuse wht transform from dec in encoder" 2014-03-26 15:13:07 -07:00
skal
d846708400 Merge "Add SSE2 version of ARGB -> BGR/RGB/... conversion functions" 2014-03-26 15:01:46 -07:00
skal
207d03b484 fix out-of-bound read during alpha-plane decoding
With -bypass_filter switched on, the lossless-compressed
data is decoded ahead of time (before being transformed and
display). Hence, the last row was called twice.

http://code.google.com/p/webp/issues/detail?id=193

Change-Id: I9e13f495f6bd6f75fa84c4a21911f14c402d4b10
2014-03-26 22:45:03 +01:00
skal
d1b33ad58b 2-5% faster trellis with clang/MacOS
(and ~2-3% on ARM)

We don't need to store cost/score for each node, but only for
the current and previous one -> simplify code and save some memory.

Also made the 'Node' structure tighter.

Change-Id: Ie3ad7d3b678992b396242f56e2ac387fe43852e6
2014-03-26 22:33:01 +01:00
skal
369c26dd3f Add SSE2 version of ARGB -> BGR/RGB/... conversion functions
~4-6% faster lossless decoding

Change-Id: I3ed1131ff2b2a0217da315fac143cd0d58293361
2014-03-26 22:19:00 +01:00
James Zern
df230f2723 dsp: reuse wht transform from dec in encoder
Change-Id: Ide663db9eaecb7a37fe0e6ad4cd5f37de190c717
2014-03-22 13:25:08 -07:00
James Zern
80e218d43a Android.mk: fix build with APP_ABI=armeabi-v7a-hard
added in r9d; relax the check to build neon code

Change-Id: Ic52b3fbd3bf53617ee52b07a55b0ed05f6f9b26f
2014-03-20 23:24:39 -07:00
Pascal Massimino
59daf08362 Merge "cosmetics:" 2014-03-18 04:02:33 -07:00
Pascal Massimino
536220084c cosmetics:
- use VP8ScanUV, separate from VP8Scan[] (for luma)
 - fix indentation
 - few missing consts
 - change TrellisQuantizeBlock() signature

Change-Id: I94b437d791cbf887015772b5923feb83dd145530
2014-03-18 03:34:56 -07:00
James Zern
3e7f34a3fb AssignSegments: quiet array-bounds warning
nb (enc->segment_hdr_.num_segments_) will be in the range
[1, NUM_MB_SEGMENTS].

Change-Id: I5c2bd0bb82b17c99aff39c98b6b1747fc040dc16
2014-03-14 18:47:52 -07:00
James Zern
3c2ebf58a4 Merge "UpdateHistogramCost: avoid implicit double->float" 2014-03-14 15:50:57 -07:00
James Zern
cf821c821f UpdateHistogramCost: avoid implicit double->float
all the functions involved return double and later these locals are used
in double calculations. fixes a vs build warning

Change-Id: Idb547104ef00b48c71c124a774ef6f2ec5f30f14
2014-03-14 11:18:52 -07:00
Vikas Arora
312e638f30 Extend the search space for GetBestGreenRedToBlue
Get back some of the compression gains by extending the search space for
GetBestGreenRedToBlue. Also removed the SkipRepeatedPixels call, as it was not
helping much in yielding better compression density.

Before:
 1000 files, 63530337 pixels, 1 loops => 45.0s (45.0 ms/file/iterations)
 Compression (output/input): 2.463/3.268 bpp, Encode rate (raw data): 1.347 MP/s

After:
1000 files, 63530337 pixels, 1 loops => 45.9s (45.9 ms/file/iterations)
 Compression (output/input): 2.461/3.268 bpp, Encode rate (raw data): 1.321 MP/s

Change-Id: I044ba9d3f5bec088305e94a7c40c053ca237fd9d
2014-03-14 09:56:00 -07:00
Vikas Arora
1c58526fe1 Fix few nits
Add/remove few casts, fixed indentation.

Change-Id: Icd141694201843c04e476f09142ce4be6e502dff
2014-03-13 13:57:39 -07:00
Vikas Arora
fef22704ec Optimize and re-structure VP8LGetHistoImageSymbols
Optimize and re-structured VP8LGetHistoImageSymbols method, by using the bin-hash
for merging the Histograms more efficiently, instead of the randomized
heuristic of existing method HistogramCombine.

This change speeds up the Lossless encoding by 40-50% (for method=4 and Q > 50)
with 0.8% penalty in compression density. For lower method, the speed up is 25-30%,
with 0.4% penalty in the compression density.

Change-Id: If61adadb1a041b95def6405aa1fe3b83c3cb25ce
2014-03-13 11:48:37 -07:00
Vikas Arora
068b14ac57 Optimize lossless decoding.
Restructure PredictorInverseTransform & ColorSpaceInverseTransform to remove
one if condition inside the main/critial loop. Also separated TransformColor &
TransformColorInverse into separate functions and avoid one 'if condition'
inside this critical method.

This change speeds up lossless decoding for Lenna image about 5% and 1000 image
corpus by 3-4%.

Change-Id: I4bd390ffa4d3bcf70ca37ef2ff2e81bedbba197d
2014-03-13 11:27:12 -07:00
Vikas Arora
5f0cfa80ff Do a binary search to get the optimum cache bits.
This speeds up the lossless encoder by a bit (1-2%), without impacting the
compression density.

Change-Id: Ied6fb38fab58eef9ded078697e0463fe7c560b26
2014-03-13 10:30:32 -07:00
James Zern
24ca3678f9 Merge "allow 'cwebp -o -' to emit output to stdout" 2014-03-12 14:01:15 -07:00
skal
e12f874eea allow 'cwebp -o -' to emit output to stdout
Change-Id: I423d25898e1ba317ccbf456bb28ce45663a3b3d2
2014-03-12 13:56:15 -07:00
skal
2bcad89b4c allow some more stdin/stout I/O
* allow reading from stdin for dwebp / vwebp
 * allow writing to stdout for gif2webp

by introducing a new function ExUtilReadFromStdin()

Example use: cat in.webp | dwebp -o - -- - > out.png

Note that the '-- -' option must appear *last*
(as per general fashion for '--' option parsing)

Change-Id: I8df0f3a246cc325925d6b6f668ba060f7dd81d68
2014-03-12 19:32:16 +01:00
skal
84ed4b3aa5 fix cwebp.1 typos after patch #69199
Change-Id: I046a54dbb4210319ddb156f49dd9d13d47b0d035
2014-03-11 23:46:50 +01:00
skal
65b99f1c92 add a -z option to cwebp, and WebPConfigLosslessPreset() function
These are presets for lossless coding, similar to zlib.
The shortcut for lossless coding is now, e.g.:
   cwebp -z 5 in.png -o out_lossless.webp

There are 10 possible values for -z parameter:
   0 (fastest, lowest compression)
to 9 (slowest, best compression)

A reasonable tradeoff is -z 6, e.g.
-z 9 can be quite slow, so use with care.

This -z option is just a shortcut for some pre-defined
'-lossless -m xx -q yy' combinations.

Change-Id: I6ae716456456aea065469c916c2d5ca4d6c6cf04
2014-03-11 23:25:35 +01:00
skal
30176619c6 4-5% faster trellis by removing some unneeded calculations.
(We didn't need the exact value of the max_error properly.
We can work with relative values instead of absolute)

Output is bitwise the same as before.

Change-Id: I67aeaaea5f81bfd9ca8e1158387a5083a2b6c649
2014-03-06 15:57:25 +01:00
James Zern
687a58ecc3 histogram.c: reindent after b33e8a0
b33e8a0 Refactor code for HistogramCombine.

Change-Id: Ia1b4b545c5f4e29cc897339df2b58f18f83c15b3
2014-03-04 00:38:14 -08:00
skal
06d456f685 Merge "~3-4% faster lossless encoding" 2014-03-04 00:17:52 -08:00
skal
c60de26099 ~3-4% faster lossless encoding
by re-arranging some code from SkipRepeatedPixel()

Change-Id: I6c1fd7cd9af22cd9be4234217ff67d7b94f44137
2014-03-04 08:12:59 +01:00
James Zern
42eb06fc0e Merge "few cosmetics after patch #69079" 2014-03-03 15:13:25 -08:00
skal
82af82644b few cosmetics after patch #69079
Change-Id: Ifa758420421b5a05825a593f6b43504887603ee7
2014-03-03 23:53:08 +01:00
Vikas Arora
b33e8a05ee Refactor code for HistogramCombine.
Refactor code for HistogramCombine and optimize the code by calculating
the combined entropy and avoid un-necessary Histogram merges.

This speeds up lossless encoding by 1-2% and almost no impact on compression
density.

Change-Id: Iedfcf4c1f3e88077bc77fc7b8c780c4cd5d6362b
2014-03-03 13:50:42 -08:00
skal
ca1bfff53f Merge "5-10% encoding speedup with faster trellis (-m 6)" 2014-03-03 13:09:17 -08:00
skal
5aeeb087d6 5-10% encoding speedup with faster trellis (-m 6)
mostly by:
- storing a single rd-score instead of cost / distortion separately
- evaluating terminal cost only once
- getting some invariants out of the loops
- more consts behind fewer variables

Change-Id: I79451f3fd1143d6537200fb8b90d0ba252809f8c
2014-03-03 22:07:06 +01:00
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
James Zern
e3dd9243cb Merge "Refactor GetBestPredictorForTile for future tuning." 2014-02-28 18:39:27 -08:00
Vikas Arora
206cc1be5a Refactor GetBestPredictorForTile for future tuning.
This change doesn't impact compression gain or compression speed.

Change-Id: Ia87d8a46c6f1ce0f8974178d75a6b0ba0a6e3696
2014-02-28 11:30:23 -08:00
James Zern
3cb8406262 Merge "speed-up trellis quant (~5-10% overall speed-up)" 2014-02-27 14:34:01 -08:00
Pascal Massimino
b66f2227c1 Merge "lossy encoding: ~3% speed-up" 2014-02-27 11:42:16 -08:00
Pascal Massimino
4287d0d49b speed-up trellis quant (~5-10% overall speed-up)
store costs[] in node instead of context

Change-Id: I6aeb0fd94af9e48580106c41408900fe3467cc54
also: various cosmetics
2014-02-27 00:06:00 -08:00
Pascal Massimino
390c8b316d lossy encoding: ~3% speed-up
incorporate non-last cost in per-level cost table

also: correct trellis-quant cost evaluation at nodes
(output a little bit different now). Method 6 is ~4% faster.

Change-Id: Ic48bd6d33f9193838216e7dc3a9f9c5508a1fbe8
2014-02-26 05:52:24 -08:00
James Zern
9a463c4a51 Merge "dec_neon: convert TransformWHT to intrinsics" 2014-02-25 14:36:44 -08:00
pascal massimino
e8605e9625 Merge "dec_neon: add ConvertU8ToS16" 2014-02-25 08:56:17 -08:00
Djordje Pesut
4aa3e4122b MIPS: MIPS32r1: rescaler bugfix
Change-Id: I6de6e2488bd5bd58c1f705739e4467feb211f8b4
2014-02-25 14:36:48 +01:00
Vikas Arora
c16cd99aba Speed up lossless encoder.
Speedup lossless encoder by 20-25% by optimizing:
- GetBestColorTransformForTile: Use techniques like binary search and
  local minima search to reduce the search space.
- VP8LFastSLog2Slow & VP8LFastLog2Slow: Adding the correction factor for
  log(1 + x) and increase the threshold for calling the approximate
  version of log_2 (compared to costly call to log()).

Change-Id: Ia2444c914521ac298492aafa458e617028fc2f9d
2014-02-21 22:13:50 -08:00
James Zern
9d6b5ff1e6 dec_neon: convert TransformWHT to intrinsics
Change-Id: I34dc1d75ddebab131cfed031764117e3f7b75c6b
2014-02-21 11:23:46 -08:00
James Zern
2ff0aae2fe dec_neon: add ConvertU8ToS16
Change-Id: Ifc4fb8e7f862e72154d2f2739811b1022d2b9416
2014-02-20 15:35:33 -08:00
skal
77a8f91981 fix compilation with USE_YUVj flag
(not that we'll ever need it, but...)

Change-Id: I9af993c62372097846c5ca6bae8362b59c3502dc
2014-02-20 13:23:18 +01:00