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| author | Deb Mukherjee <debargha@google.com> | 2012-04-12 09:24:03 -0700 |
|---|---|---|
| committer | Deb Mukherjee <debargha@google.com> | 2012-04-23 23:02:52 -0700 |
| commit | c6f1bf43210f93dafbae4a2744cadd6f18924255 (patch) | |
| tree | 4eeea793d58fef41007a91527f64ed5eda003dce /vp8/encoder/boolhuff.h | |
| parent | 2210767c3f7ce179ea9b352c8de2790b23487bca (diff) | |
| download | libvpx-c6f1bf43210f93dafbae4a2744cadd6f18924255.tar libvpx-c6f1bf43210f93dafbae4a2744cadd6f18924255.tar.gz libvpx-c6f1bf43210f93dafbae4a2744cadd6f18924255.tar.bz2 libvpx-c6f1bf43210f93dafbae4a2744cadd6f18924255.zip | |
Differential encoding of probability updates
Adds differential encoding of prob updates using a subexponential
code centered around the previous probability value.
Also searches for the most cost-effective update, and breaks
up the coefficient updates into smaller groups.
Small gain on Derf: 0.2%
Change-Id: Ie0071e3dc113e3d0d7ab95b6442bb07a89970030
Diffstat (limited to 'vp8/encoder/boolhuff.h')
| -rw-r--r-- | vp8/encoder/boolhuff.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/vp8/encoder/boolhuff.h b/vp8/encoder/boolhuff.h index 04755f532..1fb3cfadf 100644 --- a/vp8/encoder/boolhuff.h +++ b/vp8/encoder/boolhuff.h @@ -41,6 +41,13 @@ extern void vp8_encode_value(BOOL_CODER *br, int data, int bits); extern void vp8_stop_encode(BOOL_CODER *bc); extern const unsigned int vp8_prob_cost[256]; +#if CONFIG_NEWENTROPY +extern void vp8_encode_uniform(BOOL_CODER *bc, int v, int n); +extern void vp8_encode_term_subexp(BOOL_CODER *bc, int v, int k, int n); +extern int vp8_count_uniform(int v, int n); +extern int vp8_count_term_subexp(int v, int k, int n); +extern int recenter_nonneg(int v, int m); +#endif DECLARE_ALIGNED(16, extern const unsigned char, vp8_norm[256]); |