Merge "Experiment: use 12 taps for sharp filter" into nextgenv2
diff --git a/vp10/common/filter.c b/vp10/common/filter.c
index 4176e03..a3aa3cf 100644
--- a/vp10/common/filter.c
+++ b/vp10/common/filter.c
@@ -12,6 +12,8 @@
#include "vp10/common/filter.h"
+#define USE_12_SHARP_FILTER 0
+
DECLARE_ALIGNED(256, static const InterpKernel,
bilinear_filters[SUBPEL_SHIFTS]) = {
{ 0, 0, 0, 128, 0, 0, 0, 0 },
@@ -73,6 +75,29 @@
#endif // CONFIG_EXT_INTERP
};
+#if USE_12_SHARP_FILTER
+DECLARE_ALIGNED(16, static const int16_t,
+ sub_pel_filters_12sharp[16][12]) = {
+ // intfilt 0.8
+ {0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0},
+ {0, 1, -1, 3, -7, 127, 8, -4, 2, -1, 0, 0},
+ {0, 1, -3, 5, -12, 124, 18, -8, 4, -2, 1, 0},
+ {-1, 2, -4, 8, -17, 120, 28, -11, 6, -3, 1, -1},
+ {-1, 2, -4, 10, -21, 114, 38, -15, 8, -4, 2, -1},
+ {-1, 3, -5, 11, -23, 107, 49, -18, 9, -5, 2, -1},
+ {-1, 3, -6, 12, -25, 99, 60, -21, 11, -6, 3, -1},
+ {-1, 3, -6, 12, -25, 90, 70, -23, 12, -6, 3, -1},
+ {-1, 3, -6, 12, -24, 80, 80, -24, 12, -6, 3, -1},
+ {-1, 3, -6, 12, -23, 70, 90, -25, 12, -6, 3, -1},
+ {-1, 3, -6, 11, -21, 60, 99, -25, 12, -6, 3, -1},
+ {-1, 2, -5, 9, -18, 49, 107, -23, 11, -5, 3, -1},
+ {-1, 2, -4, 8, -15, 38, 114, -21, 10, -4, 2, -1},
+ {-1, 1, -3, 6, -11, 28, 120, -17, 8, -4, 2, -1},
+ {0, 1, -2, 4, -8, 18, 124, -12, 5, -3, 1, 0},
+ {0, 0, -1, 2, -4, 8, 127, -7, 3, -1, 1, 0},
+};
+#endif // USE_12_SHARP_FILTER
+
DECLARE_ALIGNED(256, static const InterpKernel,
sub_pel_filters_8sharp[SUBPEL_SHIFTS]) = {
#if CONFIG_EXT_INTERP
@@ -206,7 +231,11 @@
vp10_interp_filter_params_list[SWITCHABLE_FILTERS + 1] = {
{(const int16_t*)sub_pel_filters_8, SUBPEL_TAPS, SUBPEL_SHIFTS},
{(const int16_t*)sub_pel_filters_8smooth, SUBPEL_TAPS, SUBPEL_SHIFTS},
+#if USE_12_SHARP_FILTER
+ {(const int16_t*)sub_pel_filters_12sharp, 12, SUBPEL_SHIFTS},
+#else // USE_12_SHARP_FILTER
{(const int16_t*)sub_pel_filters_8sharp, SUBPEL_TAPS, SUBPEL_SHIFTS},
+#endif // USE_12_SHARP_FILTER
#if CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 4
{(const int16_t*)sub_pel_filters_8smooth2, SUBPEL_TAPS, SUBPEL_SHIFTS},
#endif
