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Author SHA1 Message Date
James Zern
d988eb7b39 tiffdec,MyRead: quiet -Wshorten-64-to-32 warning 
Change-Id: I7e2c7a9b80278b3056151c74a939b0f55bbbc90c
 2017-05-17 12:06:53 -07:00
hui su
dabda70733 webpinfo: add support to parse Alpha bitstream 
BUG=webp:330

Change-Id: I9ed0923d19558052d63bdbe93a542c51595fdce7
 2017-05-17 09:35:58 -07:00
James Zern
4c1176432a webpinfo: correct background color output, BGRA->ARGB 
bgcolor is stored little-endian, byte order is BGRA, with A being the
high byte

Change-Id: I8327380c039634120ee2313044781a5651513dcb
 2017-05-16 11:51:44 -07:00
Vincent Rabaud
defc98d72c Doc: clarify the role of quality in WebPConfig. 
Change-Id: I13706847f6263b9bb91eaf3c9284dd2d42ea7a85
 2017-05-15 18:01:35 +02:00
Vincent Rabaud
d78ff78095 Merge "Fix code to compile with C++." 2017-05-15 15:11:11 +00:00
Vincent Rabaud
c8f14093ac Fix code to compile with C++. 
Change-Id: I324236440cb853cb3c8fb278ef22449cd9772ad7
 2017-05-15 16:22:03 +02:00
James Zern
497dc6a70d pnmdec: sanitize invalid header output 
Change-Id: I034cb00047f725e1cd106d3677db567f1efa0847
 2017-05-15 04:57:45 -07:00
Pascal Massimino
d78e5867ff Merge "configure: test for -Wconstant-conversion" 2017-05-13 06:10:21 +00:00
James Zern
481e91eb86 Merge "pnmdec,PAM: set bytes_per_px based on depth when missing" 2017-05-13 00:47:36 +00:00
James Zern
93b1275373 configure: test for -Wconstant-conversion 
Change-Id: Idf442e35dd8b414c30b8f53ade6f32dfa6f74d39
 2017-05-12 17:02:06 +02:00
James Zern
645f0c53de pnmdec,PAM: set bytes_per_px based on depth when missing 
this avoids setting bytes_per_px < depth causing an undersized
allocation for rgb import resulting in a crash.

BUG=b/37930872

Change-Id: I32a86f91528acc084a53d08c9fde9f2f1270a603
 2017-05-10 19:15:50 -04:00
Pascal Massimino
e91546054d Merge "vwebp: activate GLUT double-buffering" 2017-05-10 05:46:20 +00:00
Pascal Massimino
818d795b09 vwebp: activate GLUT double-buffering 
This prevents the flickering of animated webp + alpha.

Change-Id: I335a434ccc6c90e32528c9832555a38cc0f71cc4
 2017-05-10 05:16:47 +00:00
hui su
d63e6f4b23 Add a man page for webpinfo 
BUG=webp:330

Change-Id: I7b02274401c935affa173a49a883a39272b6dcc3
 2017-05-09 16:14:44 -07:00
Pascal Massimino
4d7084350e Merge "NEON: implement ConvertRGB24ToY/BGR24/ARGB/RGBA32ToUV/ARGBToUV" 2017-05-09 15:33:34 +00:00
Pascal Massimino
faf42213f4 NEON: implement ConvertRGB24ToY/BGR24/ARGB/RGBA32ToUV/ARGBToUV 
Change-Id: Ie68aaed36d17f56d998c1b284514860cf5d28b8a
 2017-05-09 15:57:20 +02:00
Vincent Rabaud
b4d576fa9c Install man pages with CMake. 
Change-Id: I58a91ea00d45e1ce95250bd73613cf53e3af8401
 2017-05-09 11:41:48 +02:00
Hui Su
cbc1b92117 webpinfo: add features to parse bitstream header 
BUG=webp:330

Change-Id: If2a6ff010219fa25a2b5843725c616ee4dce65a7
 2017-05-04 09:18:11 -07:00
Vincent Rabaud
e644c556c5 Fix bad bit writer initialization. 
When re-initializing a bit writer, we could set invalid values because
the bit writer was not big enough.

Change-Id: Id25ab6712603245a5a12d5f4a86fe35a9a799a5d
 2017-05-02 18:59:01 +02:00
Pascal Massimino
b62cdad287 Merge "Implement a cruncher for lossless at method 6." 2017-04-28 14:37:57 +00:00
skal
da3e4dfb6f use the exact constant for the gamma transfer function 
As found in BT2020 reference:
https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.2020-2-201510-I!!PDF-E.pdf

The difference in output-size/PSNR are under the noise level.

Change-Id: I42c12000b61dca791226f3af772c5bd9d58201b8
 2017-04-27 11:53:15 -07:00
James Zern
a9c701e04f Merge "tiffdec: fix EXTRASAMPLES check" 2017-04-27 17:39:34 +00:00
Vincent Rabaud
adab8ce020 Implement a cruncher for lossless at method 6. 
Go over the whole compression step for each of the
transforms and pick the best one.

Change-Id: I3a1b1458348c468558be0fcf491038a5724c9364
 2017-04-27 18:16:04 +02:00
Pascal Massimino
1b92b237ac Merge "Fix VP8ApplyNearLossless to respect const and stride." 2017-04-27 15:56:47 +00:00
James Zern
1923ff0222 tiffdec: fix EXTRASAMPLES check 
the TIFFGetField() return for TIFFTAG_EXTRASAMPLES is defined as (count,
types array) [1]. previously the count was being checked rather than the
first element of the array to determine whether the alpha was associated
(pre-multiplied) and the result needed to be unmultiplied.

since:
9273e441 fix TIFF encoder regarding rgbA/RGBA

[1] http://www.libtiff.org/man/TIFFSetField.3t.html

Change-Id: I6e41be9d038fe8afb6d0aa3c8048925dc901113b
 2017-04-26 22:49:11 -07:00
James Zern
97cce5ba83 tiffdec: only request EXTRASAMPLES w/> 3 samples/px 
Change-Id: I820e7de34e500c42ab51c97a70f25319807d58eb
 2017-04-25 19:10:08 -07:00
Vincent Rabaud
0dcd85b6c4 Fix VP8ApplyNearLossless to respect const and stride. 
Change-Id: I94a90220b5a175228fc48a4b299847b60cf5081b
 2017-04-25 19:04:52 +02:00
Pascal Massimino
f768218966 yuv: rationalize the C/SSE2 function naming 
+ implement some easy missing targets in SSE2 (565/4444)

Change-Id: Ib575f7ada2a0ed7309cddd238f8bfc0e8999f145
 2017-04-21 13:52:25 +02:00
Pascal Massimino
52245424b0 NEON implementation of some Sharp-YUV420 functions 
Change-Id: I449ef9c76b06f971f6e2ad7f9db96bf906d8fe1f
new-file: dsp/yuv_neon.c
 2017-04-18 19:22:37 +02:00
Vincent Rabaud
690efd82f8 Avoid several backward reference copies. 
An extra VP8LBackwardRefs struct is used but it was used internally anyway.

Change-Id: Ifcb36ce42b8c21ef3c7a1daf38cb7f714687fcb2
 2017-04-14 15:34:50 +02:00
hui su
4bb1f607d7 src/dec/vp8_dec.h, cosmetics: fix comments 
Change-Id: If076cdf63965bad9b00cbe19c922320638b65f46
 2017-04-07 15:29:57 -07:00
James Zern
285748be78 cmake: build/install webpinfo 
Change-Id: Ia3dd24aec0c985855865f32280de1799d4bb8e9e
 2017-03-23 20:37:52 -07:00
James Zern
78fd199c3b backward_references_enc.c: clear -Wshadow warnings 
index -> position

similar to: 2f5e8934 remove -Wshadow warnings

Change-Id: Ieaf8363d726a8fdf4e799845a81364e1dfae438a
 2017-03-22 23:52:19 -07:00
James Zern
ae836410bb WebPLog2FloorC: clear -Wshadow warning 
log -> log_value

Change-Id: Iae7cea7e0875e59b0806de41eb0b58815307495e
 2017-03-22 23:50:31 -07:00
Pascal Massimino
d0b7404e00 Merge "WASM support" 2017-03-21 13:27:55 +00:00
Pascal Massimino
134e314fd8 WASM support 
demo page: webp_js/index_wasm.html

Change-Id: I9e6bde205c2730f96c5f30ec01f4bfacf1f5d128
 2017-03-21 14:07:22 +01:00
Pascal Massimino
c08adb6fbc Merge "VP8LEnc: remove use of BitsLog2Ceiling()" 2017-03-20 13:12:19 +00:00
Pascal Massimino
28c37ebd5a VP8LEnc: remove use of BitsLog2Ceiling() 
was only used once. Better fall back for Log2Floor.

Change-Id: Ibcc26505440971bffe62ba6aca3d179ca85791d4
 2017-03-20 02:58:16 -07:00
James Zern
2cb58ab2d7 webpinfo: output format as a human readable string 
Change-Id: I3a3d95bae049ee1053c9d92a364cf1b75f277f81
 2017-03-17 00:23:11 -07:00
Pascal Massimino
bb175a935e Merge "rename some symbols clashing with MSVC headers" 2017-03-16 17:53:37 +00:00
Vincent Rabaud
39eda6584f Remove a duplicated pixel hash implementation. 
Change-Id: If0df61add2fdf404f9baf0820ca83faa50f2791c
 2017-03-16 16:15:40 +01:00
Pascal Massimino
36b8274deb rename some symbols clashing with MSVC headers 
This is to prepare the inclusion of <windows.h>

FrameRect => FrameRectangle
CLIP_MASK => CLIP_8b_MASK

Change-Id: Ia4b1fa4ac06137b4102c91e232206a1fb7159ce0
 2017-03-16 10:42:00 +01:00
Pascal Massimino
274daf5415 Add webpinfo tool. 
A command line tool to print out the chunk level structure of
WebP files along with basic integrity checks.

BUG=webp:330

Change-Id: Ic69f646f649abb655b1854621d99afedeed158d7
 2017-03-14 11:41:17 +01:00
Pascal Massimino
ec5036e475 add explicit reference to /usr/local/{lib,inc} 
Change-Id: Idf0450bc715c476950f23b2f9db383a5b9936890
 2017-03-08 09:14:15 +01:00
Pascal Massimino
18f0dfac82 Merge "fix TIFF encoder regarding rgbA/RGBA" 2017-03-08 08:07:43 +00:00
James Zern
4e2b0b50ea Merge "webpdec.h: fix a doc typo" 2017-03-06 22:48:02 +00:00
Vincent Rabaud
e2eeabff12 Merge "Install binaries, libraries and headers in CMake." 2017-03-06 08:22:08 +00:00
Pascal Massimino
836607e68a webpdec.h: fix a doc typo 
Change-Id: Ie1c4c2f0008904bfc37c838d2bd168e982155308
 2017-03-05 09:38:51 +00:00
Pascal Massimino
9273e441da fix TIFF encoder regarding rgbA/RGBA 
Encoder:
We were always using ExtraSamples=1, which means associated-alpha.
But we don't need the (lossy) excursion to rgbA format. We can save
the samples as RGBA directly, by changing ExtraSamples to '2'.
The TIFF encoder now checks the colorspace properly, to handle
premultiplied format as well as non-premultiplied.

Decoder:
The result of TIFFReadRGBAImageOriented() is always pre-multiply.
So, in case an alpha channel is present, we need to unmultiply it before
calling WebPPictureImportRGBA().

See:
https://www.itu.int/itudoc/itu-t/com16/tiff-fx/docs/tiff6.pdf (page 31)
and also http://www.asmail.be/msg0055469184.html

Change-Id: I3258bfdb0eb2e1a53d6c04414f55edb2926c938c
 2017-03-03 10:36:29 -08:00
Pascal Massimino
17e3c11f99 Add limited PAM decoding support 
Should support RGB / RGB_ALPHA / GRAYSCALE correctly, though

Change-Id: Idb1470581ebdfc6efee73009b2abd53889e901cb
 2017-03-03 11:19:48 +01:00