Commit 381d3b8b authored by Dmitry Kovalev's avatar Dmitry Kovalev Committed by Gerrit Code Review
Browse files

Merge "vp9_filter.{h, c} cleanup + adding SUBPEL_TAPS constant."

parents 246381fa d19ac4b6
......@@ -8,14 +8,12 @@
* be found in the AUTHORS file in the root of the source tree.
*/
#include "vpx_ports/mem.h"
#include <stdlib.h>
#include "vp9/common/vp9_filter.h"
#include "vpx_ports/mem.h"
#include "vp9_rtcd.h"
#include "vp9/common/vp9_common.h"
DECLARE_ALIGNED(256, const int16_t, vp9_bilinear_filters[SUBPEL_SHIFTS][8]) = {
DECLARE_ALIGNED(256, const int16_t,
vp9_bilinear_filters[SUBPEL_SHIFTS][SUBPEL_TAPS]) = {
{ 0, 0, 0, 128, 0, 0, 0, 0 },
{ 0, 0, 0, 120, 8, 0, 0, 0 },
{ 0, 0, 0, 112, 16, 0, 0, 0 },
......@@ -34,8 +32,9 @@ DECLARE_ALIGNED(256, const int16_t, vp9_bilinear_filters[SUBPEL_SHIFTS][8]) = {
{ 0, 0, 0, 8, 120, 0, 0, 0 }
};
DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8[SUBPEL_SHIFTS][8]) = {
/* Lagrangian interpolation filter */
// Lagrangian interpolation filter
DECLARE_ALIGNED(256, const int16_t,
vp9_sub_pel_filters_8[SUBPEL_SHIFTS][SUBPEL_TAPS]) = {
{ 0, 0, 0, 128, 0, 0, 0, 0},
{ 0, 1, -5, 126, 8, -3, 1, 0},
{ -1, 3, -10, 122, 18, -6, 2, 0},
......@@ -54,9 +53,9 @@ DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8[SUBPEL_SHIFTS][8]) = {
{ 0, 1, -3, 8, 126, -5, 1, 0}
};
DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][8])
= {
/* dct based filter */
// DCT based filter
DECLARE_ALIGNED(256, const int16_t,
vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][SUBPEL_TAPS]) = {
{0, 0, 0, 128, 0, 0, 0, 0},
{-1, 3, -7, 127, 8, -3, 1, 0},
{-2, 5, -13, 125, 17, -6, 3, -1},
......@@ -75,9 +74,9 @@ DECLARE_ALIGNED(256, const int16_t, vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][8])
{0, 1, -3, 8, 127, -7, 3, -1}
};
// freqmultiplier = 0.5
DECLARE_ALIGNED(256, const int16_t,
vp9_sub_pel_filters_8lp[SUBPEL_SHIFTS][8]) = {
/* freqmultiplier = 0.5 */
vp9_sub_pel_filters_8lp[SUBPEL_SHIFTS][SUBPEL_TAPS]) = {
{ 0, 0, 0, 128, 0, 0, 0, 0},
{-3, -1, 32, 64, 38, 1, -3, 0},
{-2, -2, 29, 63, 41, 2, -3, 0},
......
......@@ -17,18 +17,17 @@
#define SUBPEL_BITS 4
#define SUBPEL_MASK ((1 << SUBPEL_BITS) - 1)
#define SUBPEL_SHIFTS (1 << SUBPEL_BITS)
#define SUBPEL_TAPS 8
extern const int16_t vp9_bilinear_filters[SUBPEL_SHIFTS][8];
extern const int16_t vp9_sub_pel_filters_6[SUBPEL_SHIFTS][8];
extern const int16_t vp9_sub_pel_filters_8[SUBPEL_SHIFTS][8];
extern const int16_t vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][8];
extern const int16_t vp9_sub_pel_filters_8lp[SUBPEL_SHIFTS][8];
extern const int16_t vp9_bilinear_filters[SUBPEL_SHIFTS][SUBPEL_TAPS];
extern const int16_t vp9_sub_pel_filters_6[SUBPEL_SHIFTS][SUBPEL_TAPS];
extern const int16_t vp9_sub_pel_filters_8[SUBPEL_SHIFTS][SUBPEL_TAPS];
extern const int16_t vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][SUBPEL_TAPS];
extern const int16_t vp9_sub_pel_filters_8lp[SUBPEL_SHIFTS][SUBPEL_TAPS];
// The VP9_BILINEAR_FILTERS_2TAP macro returns a pointer to the bilinear
// filter kernel as a 2 tap filter.
#define BF_LENGTH (sizeof(vp9_bilinear_filters[0]) / \
sizeof(vp9_bilinear_filters[0][0]))
#define BF_OFFSET (BF_LENGTH / 2 - 1)
#define VP9_BILINEAR_FILTERS_2TAP(x) (vp9_bilinear_filters[x] + BF_OFFSET)
#define VP9_BILINEAR_FILTERS_2TAP(x) \
(vp9_bilinear_filters[(x)] + SUBPEL_TAPS/2 - 1)
#endif // VP9_COMMON_VP9_FILTER_H_
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