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9 Commits

Author SHA1 Message Date
Dmitry Kovalev
e869869d22 Removing unnecessary casts from quantization code. 
Change-Id: I64172710654e95a90ee754d14d7104337d28010f
 2014-02-28 11:59:50 -08:00
Tom Finegan
6224516235 Merge "vp9_vaq.c: Cast result of round() to int to silence warning caused by clamp() call." 2014-02-20 11:57:36 -08:00
Tom Finegan
76c1896fda vp9_vaq.c: Cast result of round() to int to silence warning caused by clamp() call. 
clamp() wants an int, round returns a double, warning! Too bad we can't just use lrint.

Change-Id: I9c08289dde742fac0d673df8559a1892edcd1bc7
 2014-02-18 18:26:42 -08:00
Adrian Grange
9b9c33a2b8 Remove comment from calls to vp9_clear_system_state. 
Removed the comment "// __asm emms;" from all calls
to vp9_clear_system_state.

Change-Id: Ib4dae69c1cdf3f185b04184a870cd70c4d703f10
 2014-02-18 15:43:42 -08:00
Jim Bankoski
a60b76bd09 vp9_vaq.c resolve vs warnings 
Change-Id: I8f1107a33f0ec51010fb00eae3d28ee8b4d748c2
 2014-02-14 11:18:59 -08:00
Paul Wilkins
f30b323180 Modified Aq1 and Aq2 
Aq 1 only updates segment map on kf and arf and
only uses 3 segments. With these settings AQ1 is
+ for most clips in SSIM but negative in psnr.
However, the penalty in PSNR is much less than
previously.

Old version aq1 average results for std hd
-20.899% psnr, -5.809% SSIM
New version aq1 for std hd
-3.57% psnr, +1.23% SSIM

Aq2 Now uses only 2 segments and rd.
This mode is still slightly negative for most clips on
psnr and SSIM but seems to have a much bigger visual
impact on several problem clips than aq mode 1.

Old results for std hd:
-2.578% psnr, -1.151% SSIM
New results for std hd:
-1.561% psnr, -0.85% SSIM

Change-Id: I94f57f8a73121629ce598fb921aad761c1450e1c
 2014-02-11 16:27:05 +00:00
Dmitry Kovalev
7b011c5467 Replacing mi_{width,height}_log2 with num_8x8_blocks_{wide,high}_lookup. 
Change-Id: I04c55daef89bca2b85cb7db0850f9b052abc5a7c
 2013-11-06 13:34:23 -08:00
Guillaume Martres
ff3aada6cb Add missing calls to emms in the adaptive quantization code 
Also avoid using floating-point operations when adaptive quantization is
disabled.

Change-Id: I54936d7afb661df049cdb3ecd246d04ac2a9d8d3
 2013-10-17 14:04:41 -07:00
Guillaume Martres
e55f60240a Implement variance-based adaptive quantization 
This should be similar to what x264 does with --aq-mode 1.
It works well with clips like parkjoy and touhou
(http://x264.nl/developers/Dark_Shikari/LosslessTouhou.mkv).
At low bitrates, the segmentation signaling overhead may negate the
benefits of this feature.

(PGW) Default changed to feature OFF to allow provisional merge.
Change-Id: I938abf9bb487e1d4ad3b0264ea03d9826275c70b
 2013-10-16 11:55:13 +01:00