generic-library/vpx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge "Reoptimizing the interpolation filters" into experimental

Browse Source
This commit is contained in:
Deb Mukherjee 2013-03-29 07:15:05 -07:00 committed by Gerrit Code Review
commit c5840a8d8e
1 changed files with 45 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

66
vp9/common/vp9_filter.c
View File

@ -34,8 +34,9 @@ DECLARE_ALIGNED(256, const int16_t, vp9_bilinear_filters[SUBPEL_SHIFTS][8]) = {
{ 0, 0, 0, 8, 120, 0, 0, 0 }
};
#define FILTER_ALPHA 0
#define FILTER_ALPHA_SHARP 1
#define FILTER_ALPHA 0
#define FILTER_ALPHA_SHARP 0
#define FILTER_ALPHA_SMOOTH 50
DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8[SUBPEL_SHIFTS][8])
= {
#if FILTER_ALPHA == 0
@ -81,12 +82,13 @@ DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8[SUBPEL_SHIFTS][8])
{ 0, 3, -9, 27, 118, -13, 3, -1},
{ 0, 2, -6, 18, 122, -10, 2, 0},
{ 0, 1, -3, 8, 126, -5, 1, 0}
#endif /* FILTER_ALPHA */
};
DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][8])
= {
#if FILTER_ALPHA_SHARP == 1
#if FILTER_ALPHA_SHARP == 0
/* dct based filter */
{0, 0, 0, 128, 0, 0, 0, 0},
{-1, 3, -7, 127, 8, -3, 1, 0},
@ -105,24 +107,24 @@ DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][8])
{-1, 3, -6, 17, 125, -13, 5, -2},
{0, 1, -3, 8, 127, -7, 3, -1}
#elif FILTER_ALPHA_SHARP == 75
/* alpha = 0.75 */
{0, 0, 0, 128, 0, 0, 0, 0},
{-1, 2, -6, 126, 9, -3, 2, -1},
{-1, 4, -11, 123, 18, -7, 3, -1},
{-2, 6, -16, 119, 28, -10, 5, -2},
{-2, 7, -19, 113, 38, -13, 6, -2},
{-3, 8, -21, 106, 49, -16, 7, -2},
{-3, 9, -22, 99, 59, -19, 8, -3},
{-3, 9, -23, 90, 70, -21, 9, -3},
{-3, 9, -22, 80, 80, -22, 9, -3},
{-3, 9, -21, 70, 90, -23, 9, -3},
{-3, 8, -19, 59, 99, -22, 9, -3},
{-2, 7, -16, 49, 106, -21, 8, -3},
{-2, 6, -13, 38, 113, -19, 7, -2},
{-2, 5, -10, 28, 119, -16, 6, -2},
{-1, 3, -7, 18, 123, -11, 4, -1},
{-1, 2, -3, 9, 126, -6, 2, -1}
#elif FILTER_ALPHA_SHARP == 80
/* alpha = 0.80 */
{ 0, 0, 0, 128, 0, 0, 0, 0},
{-1, 2, -6, 127, 9, -4, 2, -1},
{-2, 5, -12, 124, 18, -7, 4, -2},
{-2, 7, -16, 119, 28, -11, 5, -2},
{-3, 8, -19, 114, 38, -14, 7, -3},
{-3, 9, -22, 107, 49, -17, 8, -3},
{-4, 10, -23, 99, 60, -20, 10, -4},
{-4, 11, -23, 90, 70, -22, 10, -4},
{-4, 11, -23, 80, 80, -23, 11, -4},
{-4, 10, -22, 70, 90, -23, 11, -4},
{-4, 10, -20, 60, 99, -23, 10, -4},
{-3, 8, -17, 49, 107, -22, 9, -3},
{-3, 7, -14, 38, 114, -19, 8, -3},
{-2, 5, -11, 28, 119, -16, 7, -2},
{-2, 4, -7, 18, 124, -12, 5, -2},
{-1, 2, -4, 9, 127, -6, 2, -1}
#endif /* FILTER_ALPHA_SHARP */
};
@ -130,6 +132,8 @@ DECLARE_ALIGNED(256, const int16_t,
vp9_sub_pel_filters_8lp[SUBPEL_SHIFTS][8]) = {
/* 8-tap lowpass filter */
/* Hamming window */
/* freqmultiplier = 0.625 */
#if FILTER_ALPHA_SMOOTH == 625
{-1, -7, 32, 80, 32, -7, -1, 0},
{-1, -8, 28, 80, 37, -7, -2, 1},
{ 0, -8, 24, 79, 41, -7, -2, 1},
@ -146,6 +150,26 @@ DECLARE_ALIGNED(256, const int16_t,
{ 1, -3, -5, 45, 78, 20, -8, 0},
{ 1, -2, -7, 41, 79, 24, -8, 0},
{ 1, -2, -7, 37, 80, 28, -8, -1}
#elif FILTER_ALPHA_SMOOTH == 50
/* freqmultiplier = 0.5 */
{-3, 0, 35, 64, 35, 0, -3, 0},
{-3, -1, 32, 64, 38, 1, -3, 0},
{-2, -2, 29, 63, 41, 2, -3, 0},
{-2, -2, 26, 63, 43, 4, -4, 0},
{-2, -3, 24, 62, 46, 5, -4, 0},
{-2, -3, 21, 60, 49, 7, -4, 0},
{-1, -4, 18, 59, 51, 9, -4, 0},
{-1, -4, 16, 57, 53, 12, -4, -1},
{-1, -4, 14, 55, 55, 14, -4, -1},
{-1, -4, 12, 53, 57, 16, -4, -1},
{0, -4, 9, 51, 59, 18, -4, -1},
{0, -4, 7, 49, 60, 21, -3, -2},
{0, -4, 5, 46, 62, 24, -3, -2},
{0, -4, 4, 43, 63, 26, -2, -2},
{0, -3, 2, 41, 63, 29, -2, -2},
{0, -3, 1, 38, 64, 32, -1, -3}
#endif
};
DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_6[SUBPEL_SHIFTS][8])