8c687d2feb
ans: Cleanup rans writing routines
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* Replace struct rans_sym parameter with values. It only had two entries.
* Document functions.
* Use longer variable names.
TODO: Refactor the unit tests.
Change-Id: Idad65117dab565786697015ef07070e1c308d963
2017-02-13 21:01:51 +00:00
c54692b5ac
ans: Switch from uABS to rABS
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This is in preparation for expanding the state range.
No discernible compression impact
ans_multioff@2017-01-25T20:58:18.756Z -> ans_multioff_rabs@2017-01-26T01:05:12.801Z
PSNR | PSNR Cb | PSNR Cr | PSNR HVS | SSIM | MS SSIM | CIEDE 2000
-0.0001 | -0.0001 | -0.0001 | -0.0001 | -0.0001 | -0.0001 | -0.0001
https://arewecompressedyet.com/?job=ans_multioff%402017-01-25T20%3A58%3A18.756Z&job=ans_multioff_rabs%402017-01-26T01%3A05%3A12.801Z
Change-Id: Ie1817991190f1de6d9c31e0c97f77efbd5869d35
2017-02-04 02:40:26 +00:00
2cdf0d85a2
Specify ANS window size at initialization
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Change-Id: Ia1757d580dd230d9e743b1f8c3e87df164008684
2016-12-17 03:56:10 +00:00
b0be6411db
ans: Use a fixed N-symbol window
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Accept a small compression loss is in exchange for a fixed sized encoder
side buffering requirement.
subset1:
rans_base@2016-12-02T22:55:56.809Z -> rans_nsym@2016-12-02T22:58:19.859Z
PSNR | PSNR Cb | PSNR Cr | PSNR HVS | SSIM | MS SSIM | CIEDE 2000
0.0304 | 0.0303 | 0.0305 | 0.0317 | 0.0312 | 0.0309 | 0.0301
Change-Id: I09dd143e4f1638b97dc9bba7023efa837a7d48c7
2016-12-12 21:28:43 +00:00
1ecdf2bf33
ans: Move buf_ans_flush to the .c file
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It is called relatively rarely and doesn't need to be inlined.
Change-Id: I4ee7f95548f008f2ee29da807aaca54b9a25aecd
2016-12-03 02:35:06 +00:00
2a1b3af329
ans: Give buf_ans ownership of the AnsCoder
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Change-Id: I509bbba0d84c1d378044e2c612dd48cd8f99848d
2016-12-02 02:07:27 +00:00
868fc0b04a
Port aom_reader_tell() support
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This commit ports the following from aom/master:
4c46278b9c993556c9c3b
2016-10-18 08:50:05 -07:00
7fe2ae8e88
Port ANS from aom/master 25aaf40
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Reconciles the following commits from aom/master to nextgenv2:
- 25aaf40bbc87073de569
2016-09-28 12:07:00 -07:00
1ac1ae73dc
Move ANS to aom_dsp.
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That's where it lives in aom/master.
Change-Id: I38f405827d9c2d0b06ef5f3bfd7cadc35d5991ef
2016-09-19 09:51:27 -07:00
Alex Converse
Michael Bebenita