Commit bd69b7d4 authored by Yaowu Xu's avatar Yaowu Xu
Browse files

slight adjustment to coef band definition

This commit adjusted slightly the 4x4 coefficents band definition to
better classify coefficients with similar distributions and usages.
It helps derf set about .1%, it is alos slightly positive for std-hd
set, where 4x4 blocks are used less frequently.

The commit also removed a const array not in use.

Change-Id: I78d16905d4036641ec905b0c32c190c1def5b249
parent 4d6de817
......@@ -48,7 +48,7 @@ DECLARE_ALIGNED(16, const unsigned char, vp8_norm[256]) =
};
DECLARE_ALIGNED(16, cuchar, vp8_coef_bands[16]) =
{ 0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7};
{ 0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7};
DECLARE_ALIGNED(16, cuchar, vp8_prev_token_class[MAX_ENTROPY_TOKENS]) =
{ 0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0};
......@@ -77,13 +77,6 @@ DECLARE_ALIGNED(64, const int, vp8_default_zig_zag1d_8x8[64]) =
58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63,
};
DECLARE_ALIGNED(16, const short, vp8_default_inv_zig_zag[16]) =
{
1, 2, 6, 7,
3, 5, 8, 13,
4, 9, 12, 14,
10, 11, 15, 16
};
DECLARE_ALIGNED(16, short, vp8_default_zig_zag_mask[16]);
DECLARE_ALIGNED(64, short, vp8_default_zig_zag_mask_8x8[64]);//int64_t
......
......@@ -96,7 +96,6 @@ extern const vp8_prob vp8_coef_update_probs_8x8 [BLOCK_TYPES] [COEF_BANDS] [PREV
struct VP8Common;
void vp8_default_coef_probs(struct VP8Common *);
extern DECLARE_ALIGNED(16, const int, vp8_default_zig_zag1d[16]);
extern DECLARE_ALIGNED(16, const short, vp8_default_inv_zig_zag[16]);
extern short vp8_default_zig_zag_mask[16];
extern DECLARE_ALIGNED(64, const int, vp8_default_zig_zag1d_8x8[64]);
extern short vp8_default_zig_zag_mask_8x8[64];//int64_t
......
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