| /* |
| * Copyright (c) 2011 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef VP9_COMMON_VP9_FILTER_H_ |
| #define VP9_COMMON_VP9_FILTER_H_ |
| |
| #include "vpx_config.h" |
| #include "vpx/vpx_integer.h" |
| |
| #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][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 BILINEAR_FILTERS_2TAP(x) \ |
| (vp9_bilinear_filters[(x)] + SUBPEL_TAPS/2 - 1) |
| |
| #endif // VP9_COMMON_VP9_FILTER_H_ |