ref: 4cfb8ed4c93a7ddcd3b93b8d588251f05e608245
dir: /vp8/common/filter.c/
/*
* Copyright (c) 2010 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.
*/
#include <stdlib.h>
#include "filter.h"
#include "vpx_ports/mem.h"
DECLARE_ALIGNED(16, const short, vp8_bilinear_filters[8][2]) =
{
{ 128, 0 },
{ 112, 16 },
{ 96, 32 },
{ 80, 48 },
{ 64, 64 },
{ 48, 80 },
{ 32, 96 },
{ 16, 112 }
};
#if CONFIG_ENHANCED_INTERP
#define FILTER_ALPHA 875
DECLARE_ALIGNED(16, const short, vp8_sub_pel_filters[8][2*INTERP_EXTEND]) =
{
/* Generated using MATLAB:
* alpha = 0.875;
* b=intfilt(8,4,alpha);
* bi=round(128*b);
* ba=flipud(reshape([bi 0], 8, 8));
* % Now normalize the powers of the polyphase components
* disp(num2str(ba, '%d,'))
*/
#if FILTER_ALPHA == 90
/* alpha = 0.9 */
{ 0, 0, 0, 128, 0, 0, 0, 0},
{-3, 6, -13, 126, 18, -8, 5, -3},
{-6, 11, -22, 118, 39, -16, 9, -5},
{-8, 14, -27, 104, 62, -23, 13, -7},
{-8, 14, -27, 85, 85, -27, 14, -8},
{-7, 13, -23, 62, 104, -27, 14, -8},
{-5, 9, -16, 39, 118, -22, 11, -6},
{-3, 5, -8, 18, 126, -13, 6, -3}
#elif FILTER_ALPHA == 875
/* alpha = 0.875 */
{ 0, 0, 0, 128, 0, 0, 0, 0},
{-3, 6, -13, 126, 18, -8, 4, -2},
{-5, 10, -22, 118, 39, -16, 9, -5},
{-7, 13, -26, 104, 62, -23, 12, -7},
{-7, 13, -27, 85, 85, -27, 13, -7},
{-7, 12, -23, 62, 104, -26, 13, -7},
{-5, 9, -16, 39, 118, -22, 10, -5},
{-2, 4, -8, 18, 126, -13, 6, -3}
#elif FILTER_ALPHA == 85
/* alpha = 0.85 */
{ 0, 0, 0, 128, 0, 0, 0, 0},
{-2, 5, -12, 124, 18, -7, 4, -2},
{-4, 10, -20, 114, 39, -15, 8, -4},
{-5, 12, -24, 100, 60, -21, 11, -5},
{-5, 12, -24, 81, 81, -24, 12, -5},
{-5, 11, -21, 60, 100, -24, 12, -5},
{-4, 8, -15, 39, 114, -20, 10, -4},
{-2, 4, -7, 18, 124, -12, 5, -2}
#endif
};
#if EDGE_PIXEL_FILTER > 0
#define EDGE_SIMPLE_THRESH 128
#define EDGE_GRAD_THRESH 128
#define EDGE_GRADS2X2_THRESH 4
/* TODO: Refine these filters */
DECLARE_ALIGNED(16, const short, vp8_sub_pel_filters_ns[64][4*EDGE_PIXEL_FILTER_EXTEND*EDGE_PIXEL_FILTER_EXTEND]) =
{
#if EDGE_PIXEL_FILTER_EXTEND == 4
{0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, -8, 124, 13, -1, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, -11, 112, 30, -3, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, -11, 94, 51, -6, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, -9, 73, 73, -9, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, -6, 51, 94, -11, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, -3, 30, 112, -11, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, -1, 13, 124, -8, 0, 0, 0, 0, 0, 0, 0, 0},
{0, -8, 0, 0, 0, 124, 0, 0, 0, 13, 0, 0, 0, -1, 0, 0},
{0, -8, -1, 0, -7, 120, 12, 0, -1, 12, 1, 0, 0, 0, 0, 0},
{1, -7, -2, 0, -11, 108, 29, -3, -1, 11, 3, 0, 0, 0, 0, 0},
{0, -6, -3, 0, -10, 91, 49, -6, -1, 9, 5, 0, 0, 0, 0, 0},
{0, -4, -4, 0, -8, 70, 70, -8, -1, 7, 7, -1, 0, 0, 0, 0},
{0, -3, -6, 0, -6, 49, 91, -10, 0, 5, 9, -1, 0, 0, 0, 0},
{0, -2, -7, 1, -3, 29, 108, -11, 0, 3, 11, -1, 0, 0, 0, 0},
{0, -1, -8, 0, 0, 12, 120, -7, 0, 1, 12, -1, 0, 0, 0, 0},
{0, -11, 0, 0, 0, 112, 0, 0, 0, 30, 0, 0, 0, -3, 0, 0},
{1, -11, -1, 0, -7, 108, 11, 0, -2, 29, 3, 0, 0, -3, 0, 0},
{1, -10, -2, 0, -10, 98, 26, -3, -2, 26, 7, 0, 0, -3, 0, 0},
{1, -8, -4, 0, -10, 82, 44, -5, -2, 22, 12, -1, 0, -2, -1, 0},
{0, -6, -6, 0, -7, 64, 64, -7, -2, 17, 17, -2, 0, -2, -2, 0},
{0, -4, -8, 1, -5, 44, 82, -10, -1, 12, 22, -2, 0, -1, -2, 0},
{0, -2, -10, 1, -3, 26, 98, -10, 0, 7, 26, -2, 0, 0, -3, 0},
{0, -1, -11, 1, 0, 11, 108, -7, 0, 3, 29, -2, 0, 0, -3, 0},
{0, -11, 0, 0, 0, 94, 0, 0, 0, 51, 0, 0, 0, -6, 0, 0},
{0, -10, -1, 0, -6, 91, 9, 0, -3, 49, 5, 0, 0, -6, 0, 0},
{1, -10, -2, 0, -8, 82, 22, -2, -4, 44, 12, -1, 0, -5, -1, 0},
{0, -8, -4, 0, -8, 70, 37, -4, -4, 37, 20, -2, 0, -4, -2, 0},
{0, -6, -6, 0, -6, 54, 54, -6, -3, 28, 28, -3, 0, -3, -3, 0},
{0, -4, -8, 0, -4, 37, 70, -8, -2, 20, 37, -4, 0, -2, -4, 0},
{0, -2, -10, 1, -2, 22, 82, -8, -1, 12, 44, -4, 0, -1, -5, 0},
{0, -1, -10, 0, 0, 9, 91, -6, 0, 5, 49, -3, 0, 0, -6, 0},
{0, -9, 0, 0, 0, 73, 0, 0, 0, 73, 0, 0, 0, -9, 0, 0},
{0, -8, -1, 0, -4, 70, 7, 0, -4, 70, 7, 0, 0, -8, -1, 0},
{0, -7, -2, 0, -6, 64, 17, -2, -6, 64, 17, -2, 0, -7, -2, 0},
{0, -6, -3, 0, -6, 54, 28, -3, -6, 54, 28, -3, 0, -6, -3, 0},
{0, -5, -5, 0, -5, 42, 42, -5, -5, 42, 42, -5, 0, -5, -5, 0},
{0, -3, -6, 0, -3, 28, 54, -6, -3, 28, 54, -6, 0, -3, -6, 0},
{0, -2, -7, 0, -2, 17, 64, -6, -2, 17, 64, -6, 0, -2, -7, 0},
{0, -1, -8, 0, 0, 7, 70, -4, 0, 7, 70, -4, 0, -1, -8, 0},
{0, -6, 0, 0, 0, 51, 0, 0, 0, 94, 0, 0, 0, -11, 0, 0},
{0, -6, 0, 0, -3, 49, 5, 0, -6, 91, 9, 0, 0, -10, -1, 0},
{0, -5, -1, 0, -4, 44, 12, -1, -8, 82, 22, -2, 1, -10, -2, 0},
{0, -4, -2, 0, -4, 37, 20, -2, -8, 70, 37, -4, 0, -8, -4, 0},
{0, -3, -3, 0, -3, 28, 28, -3, -6, 54, 54, -6, 0, -6, -6, 0},
{0, -2, -4, 0, -2, 20, 37, -4, -4, 37, 70, -8, 0, -4, -8, 0},
{0, -1, -5, 0, -1, 12, 44, -4, -2, 22, 82, -8, 0, -2, -10, 1},
{0, 0, -6, 0, 0, 5, 49, -3, 0, 9, 91, -6, 0, -1, -10, 0},
{0, -3, 0, 0, 0, 30, 0, 0, 0, 112, 0, 0, 0, -11, 0, 0},
{0, -3, 0, 0, -2, 29, 3, 0, -7, 108, 11, 0, 1, -11, -1, 0},
{0, -3, 0, 0, -2, 26, 7, 0, -10, 98, 26, -3, 1, -10, -2, 0},
{0, -2, -1, 0, -2, 22, 12, -1, -10, 82, 44, -5, 1, -8, -4, 0},
{0, -2, -2, 0, -2, 17, 17, -2, -7, 64, 64, -7, 0, -6, -6, 0},
{0, -1, -2, 0, -1, 12, 22, -2, -5, 44, 82, -10, 0, -4, -8, 1},
{0, 0, -3, 0, 0, 7, 26, -2, -3, 26, 98, -10, 0, -2, -10, 1},
{0, 0, -3, 0, 0, 3, 29, -2, 0, 11, 108, -7, 0, -1, -11, 1},
{0, -1, 0, 0, 0, 13, 0, 0, 0, 124, 0, 0, 0, -8, 0, 0},
{0, 0, 0, 0, -1, 12, 1, 0, -8, 120, 12, 0, 0, -7, -1, 0},
{0, 0, 0, 0, -1, 11, 3, 0, -11, 108, 29, -3, 1, -7, -2, 0},
{0, 0, 0, 0, -1, 9, 5, 0, -10, 91, 49, -6, 0, -6, -3, 0},
{0, 0, 0, 0, -1, 7, 7, -1, -8, 70, 70, -8, 0, -4, -4, 0},
{0, 0, 0, 0, 0, 5, 9, -1, -6, 49, 91, -10, 0, -3, -6, 0},
{0, 0, 0, 0, 0, 3, 11, -1, -3, 29, 108, -11, 0, -2, -7, 1},
{0, 0, 0, 0, 0, 1, 12, -1, 0, 12, 120, -8, 0, -1, -7, 0}
#elif EDGE_PIXEL_FILTER_EXTEND == 6
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, -11, 124, 15, -4, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, -17, 114, 34, -9, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, -19, 98, 56, -14, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, -18, 78, 78, -18, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, -14, 56, 98, -19, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, -9, 34, 114, -17, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -4, 15, 124, -11, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 3, 0, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 124, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, -4, 0, 0, 0, 0, 0, 1, 0, 0, 0},
{0, 0, 3, 0, 0, 0, 0, 1, -11, -1, 0, 0, 3, -11, 121, 15, -4, 0, 0, -1, 15, 2, 0, 0, 0, 0, -4, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 3, 1, 0, 0, 0, 1, -10, -3, 1, 0, 4, -17, 111, 34, -9, 2, 0, -2, 14, 4, -1, 0, 0, 0, -4, -1, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 2, 1, 0, 0, 0, 2, -8, -5, 1, 0, 4, -18, 95, 54, -13, 3, 0, -2, 12, 7, -2, 0, 0, 0, -3, -2, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 2, 2, 0, 0, 0, 1, -7, -7, 1, 0, 4, -17, 76, 76, -17, 4, 0, -2, 9, 9, -2, 0, 0, 0, -2, -2, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 1, 2, 0, 0, 0, 1, -5, -8, 2, 0, 3, -13, 54, 95, -18, 4, 0, -2, 7, 12, -2, 0, 0, 0, -2, -3, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 1, 3, 0, 0, 0, 1, -3, -10, 1, 0, 2, -9, 34, 111, -17, 4, 0, -1, 4, 14, -2, 0, 0, 0, -1, -4, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 3, 0, 0, 0, 0, -1, -11, 1, 0, 0, -4, 15, 121, -11, 3, 0, 0, 2, 15, -1, 0, 0, 0, 0, -4, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 4, 0, 0, 0, 0, 0, -17, 0, 0, 0, 0, 0, 114, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 0, -9, 0, 0, 0, 0, 0, 2, 0, 0, 0},
{0, 0, 4, 0, 0, 0, 0, 1, -17, -2, 0, 0, 3, -10, 111, 14, -4, 0, 1, -3, 34, 4, -1, 0, 0, 1, -9, -1, 0, 0, 0, 0, 2, 0, 0, 0},
{0, 0, 4, 1, 0, 0, -1, 2, -15, -5, 1, 0, 4, -15, 101, 31, -8, 1, 1, -5, 31, 9, -2, 0, 0, 1, -8, -2, 1, 0, 0, 0, 1, 0, 0, 0},
{0, -1, 3, 2, 0, 0, -1, 2, -13, -7, 2, 0, 4, -17, 87, 50, -12, 2, 1, -5, 26, 15, -4, 1, 0, 1, -7, -4, 1, 0, 0, 0, 1, 1, 0, 0},
{0, -1, 3, 3, -1, 0, 0, 2, -10, -10, 2, 0, 3, -16, 69, 69, -16, 3, 1, -5, 21, 21, -5, 1, 0, 1, -5, -5, 1, 0, 0, 0, 1, 1, 0, 0},
{0, 0, 2, 3, -1, 0, 0, 2, -7, -13, 2, -1, 2, -12, 50, 87, -17, 4, 1, -4, 15, 26, -5, 1, 0, 1, -4, -7, 1, 0, 0, 0, 1, 1, 0, 0},
{0, 0, 1, 4, 0, 0, 0, 1, -5, -15, 2, -1, 1, -8, 31, 101, -15, 4, 0, -2, 9, 31, -5, 1, 0, 1, -2, -8, 1, 0, 0, 0, 0, 1, 0, 0},
{0, 0, 0, 4, 0, 0, 0, 0, -2, -17, 1, 0, 0, -4, 14, 111, -10, 3, 0, -1, 4, 34, -3, 1, 0, 0, -1, -9, 1, 0, 0, 0, 0, 2, 0, 0},
{0, 0, 4, 0, 0, 0, 0, 0, -19, 0, 0, 0, 0, 0, 98, 0, 0, 0, 0, 0, 56, 0, 0, 0, 0, 0, -14, 0, 0, 0, 0, 0, 3, 0, 0, 0},
{0, 0, 4, 0, 0, 0, 0, 2, -18, -2, 0, 0, 2, -8, 95, 12, -3, 0, 1, -5, 54, 7, -2, 0, 0, 1, -13, -2, 0, 0, 0, 0, 3, 0, 0, 0},
{0, -1, 4, 1, 0, 0, -1, 2, -17, -5, 1, 0, 3, -13, 87, 26, -7, 1, 2, -7, 50, 15, -4, 1, 0, 2, -12, -4, 1, 0, 0, 0, 2, 1, 0, 0},
{0, -1, 3, 2, 0, 0, -1, 3, -15, -8, 2, 0, 3, -15, 75, 43, -11, 2, 2, -8, 43, 24, -6, 1, 0, 2, -10, -6, 1, 0, 0, 0, 2, 1, 0, 0},
{0, -1, 3, 3, -1, 0, -1, 2, -12, -12, 2, -1, 3, -13, 59, 59, -13, 3, 2, -8, 34, 34, -8, 2, 0, 2, -8, -8, 2, 0, 0, 0, 2, 2, 0, 0},
{0, 0, 2, 3, -1, 0, 0, 2, -8, -15, 3, -1, 2, -11, 43, 75, -15, 3, 1, -6, 24, 43, -8, 2, 0, 1, -6, -10, 2, 0, 0, 0, 1, 2, 0, 0},
{0, 0, 1, 4, -1, 0, 0, 1, -5, -17, 2, -1, 1, -7, 26, 87, -13, 3, 1, -4, 15, 50, -7, 2, 0, 1, -4, -12, 2, 0, 0, 0, 1, 2, 0, 0},
{0, 0, 0, 4, 0, 0, 0, 0, -2, -18, 2, 0, 0, -3, 12, 95, -8, 2, 0, -2, 7, 54, -5, 1, 0, 0, -2, -13, 1, 0, 0, 0, 0, 3, 0, 0},
{0, 0, 4, 0, 0, 0, 0, 0, -18, 0, 0, 0, 0, 0, 78, 0, 0, 0, 0, 0, 78, 0, 0, 0, 0, 0, -18, 0, 0, 0, 0, 0, 4, 0, 0, 0},
{0, 0, 4, 0, 0, 0, 0, 1, -17, -2, 0, 0, 2, -7, 76, 9, -2, 0, 2, -7, 76, 9, -2, 0, 0, 1, -17, -2, 0, 0, 0, 0, 4, 0, 0, 0},
{0, 0, 3, 1, 0, 0, -1, 2, -16, -5, 1, 0, 3, -10, 69, 21, -5, 1, 3, -10, 69, 21, -5, 1, -1, 2, -16, -5, 1, 0, 0, 0, 3, 1, 0, 0},
{0, -1, 3, 2, 0, 0, -1, 2, -13, -8, 2, 0, 3, -12, 59, 34, -8, 2, 3, -12, 59, 34, -8, 2, -1, 2, -13, -8, 2, 0, 0, -1, 3, 2, 0, 0},
{0, 0, 2, 2, 0, 0, 0, 2, -10, -10, 2, 0, 2, -10, 47, 47, -10, 2, 2, -11, 47, 47, -11, 2, 0, 2, -11, -11, 2, 0, 0, 0, 2, 2, 0, 0},
{0, 0, 2, 3, -1, 0, 0, 2, -8, -13, 2, -1, 2, -8, 34, 59, -12, 3, 2, -8, 34, 59, -12, 3, 0, 2, -8, -13, 2, -1, 0, 0, 2, 3, -1, 0},
{0, 0, 1, 3, 0, 0, 0, 1, -5, -16, 2, -1, 1, -5, 21, 69, -10, 3, 1, -5, 21, 69, -10, 3, 0, 1, -5, -16, 2, -1, 0, 0, 1, 3, 0, 0},
{0, 0, 0, 4, 0, 0, 0, 0, -2, -17, 1, 0, 0, -2, 9, 76, -7, 2, 0, -2, 9, 76, -7, 2, 0, 0, -2, -17, 1, 0, 0, 0, 0, 4, 0, 0},
{0, 0, 3, 0, 0, 0, 0, 0, -14, 0, 0, 0, 0, 0, 56, 0, 0, 0, 0, 0, 98, 0, 0, 0, 0, 0, -19, 0, 0, 0, 0, 0, 4, 0, 0, 0},
{0, 0, 3, 0, 0, 0, 0, 1, -13, -2, 0, 0, 1, -5, 54, 7, -2, 0, 2, -8, 95, 12, -3, 0, 0, 2, -18, -2, 0, 0, 0, 0, 4, 0, 0, 0},
{0, 0, 2, 1, 0, 0, 0, 2, -12, -4, 1, 0, 2, -7, 50, 15, -4, 1, 3, -13, 87, 26, -7, 1, -1, 2, -17, -5, 1, 0, 0, -1, 4, 1, 0, 0},
{0, 0, 2, 1, 0, 0, 0, 2, -11, -6, 1, 0, 2, -8, 43, 24, -6, 1, 3, -15, 75, 43, -10, 2, -1, 3, -15, -8, 2, 0, 0, -1, 3, 2, 0, 0},
{0, 0, 2, 2, 0, 0, 0, 2, -8, -8, 2, 0, 2, -8, 34, 34, -8, 2, 3, -13, 59, 59, -13, 3, -1, 2, -12, -12, 2, -1, 0, -1, 3, 3, -1, 0},
{0, 0, 1, 2, 0, 0, 0, 1, -6, -11, 2, 0, 1, -6, 24, 43, -8, 2, 2, -10, 43, 75, -15, 3, 0, 2, -8, -15, 3, -1, 0, 0, 2, 3, -1, 0},
{0, 0, 1, 2, 0, 0, 0, 1, -4, -12, 2, 0, 1, -4, 15, 50, -7, 2, 1, -7, 26, 87, -13, 3, 0, 1, -5, -17, 2, -1, 0, 0, 1, 4, -1, 0},
{0, 0, 0, 3, 0, 0, 0, 0, -2, -13, 1, 0, 0, -2, 7, 54, -5, 1, 0, -3, 12, 95, -8, 2, 0, 0, -2, -18, 2, 0, 0, 0, 0, 4, 0, 0},
{0, 0, 2, 0, 0, 0, 0, 0, -9, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 0, 114, 0, 0, 0, 0, 0, -17, 0, 0, 0, 0, 0, 4, 0, 0, 0},
{0, 0, 2, 0, 0, 0, 0, 1, -9, -1, 0, 0, 1, -3, 34, 4, -1, 0, 3, -10, 111, 14, -4, 0, 0, 1, -17, -2, 0, 0, 0, 0, 4, 0, 0, 0},
{0, 0, 1, 0, 0, 0, 0, 1, -8, -2, 1, 0, 1, -5, 31, 9, -2, 0, 4, -15, 101, 31, -8, 1, 0, 2, -15, -5, 1, 0, 0, -1, 4, 1, 0, 0},
{0, 0, 1, 1, 0, 0, 0, 1, -7, -4, 1, 0, 1, -5, 26, 15, -4, 1, 4, -17, 87, 50, -12, 2, -1, 2, -13, -7, 2, 0, 0, -1, 3, 2, 0, 0},
{0, 0, 1, 1, 0, 0, 0, 1, -5, -5, 1, 0, 1, -5, 21, 21, -5, 1, 3, -16, 69, 69, -16, 3, 0, 2, -10, -10, 2, 0, 0, -1, 3, 3, -1, 0},
{0, 0, 1, 1, 0, 0, 0, 1, -4, -7, 1, 0, 1, -4, 15, 26, -5, 1, 2, -12, 50, 87, -17, 4, 0, 2, -7, -13, 2, -1, 0, 0, 2, 3, -1, 0},
{0, 0, 0, 1, 0, 0, 0, 1, -2, -8, 1, 0, 0, -2, 9, 31, -5, 1, 1, -8, 31, 101, -15, 4, 0, 1, -5, -15, 2, 0, 0, 0, 1, 4, -1, 0},
{0, 0, 0, 2, 0, 0, 0, 0, -1, -9, 1, 0, 0, -1, 4, 34, -3, 1, 0, -4, 14, 111, -10, 3, 0, 0, -2, -17, 1, 0, 0, 0, 0, 4, 0, 0},
{0, 0, 1, 0, 0, 0, 0, 0, -4, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 124, 0, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 3, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, -4, 0, 0, 0, 0, -1, 15, 2, 0, 0, 3, -11, 121, 15, -4, 0, 0, 1, -11, -1, 0, 0, 0, 0, 3, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, -4, -1, 0, 0, 0, -2, 14, 4, -1, 0, 4, -17, 111, 34, -9, 2, 0, 1, -10, -3, 1, 0, 0, 0, 3, 1, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, -3, -2, 0, 0, 0, -2, 12, 7, -2, 0, 4, -18, 95, 54, -13, 3, 0, 2, -8, -5, 1, 0, 0, 0, 2, 1, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, -2, -2, 0, 0, 0, -2, 9, 9, -2, 0, 4, -17, 76, 76, -17, 4, 0, 1, -7, -7, 1, 0, 0, 0, 2, 2, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, -2, -3, 0, 0, 0, -2, 7, 12, -2, 0, 3, -13, 54, 95, -18, 4, 0, 1, -5, -8, 2, 0, 0, 0, 1, 2, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, -1, -4, 0, 0, 0, -1, 4, 14, -2, 0, 2, -9, 34, 111, -17, 4, 0, 1, -3, -10, 1, 0, 0, 0, 1, 3, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, -4, 0, 0, 0, 0, 2, 15, -1, 0, 0, -4, 15, 121, -11, 3, 0, 0, -1, -11, 1, 0, 0, 0, 0, 3, 0, 0}
#endif
};
#endif // EDGE_PIXEL_FILTER
#else // CONFIG_ENHANCED_INTERP
DECLARE_ALIGNED(16, const short, vp8_sub_pel_filters[8][6]) =
{
{ 0, 0, 128, 0, 0, 0 }, /* note that 1/8 pel positions are just as per alpha -0.5 bicubic */
{ 0, -6, 123, 12, -1, 0 },
{ 2, -11, 108, 36, -8, 1 }, /* New 1/4 pel 6 tap filter */
{ 0, -9, 93, 50, -6, 0 },
{ 3, -16, 77, 77, -16, 3 }, /* New 1/2 pel 6 tap filter */
{ 0, -6, 50, 93, -9, 0 },
{ 1, -8, 36, 108, -11, 2 }, /* New 1/4 pel 6 tap filter */
{ 0, -1, 12, 123, -6, 0 },
};
#endif // CONFIG_ENHANCED_INTERP
static void filter_block2d_first_pass
(
unsigned char *src_ptr,
int *output_ptr,
unsigned int src_pixels_per_line,
unsigned int pixel_step,
unsigned int output_height,
unsigned int output_width,
const short *vp8_filter
)
{
unsigned int i, j;
int Temp;
for (i = 0; i < output_height; i++)
{
for (j = 0; j < output_width; j++)
{
#if INTERP_EXTEND == 3
Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[0] * vp8_filter[2]) +
((int)src_ptr[pixel_step] * vp8_filter[3]) +
((int)src_ptr[2*pixel_step] * vp8_filter[4]) +
((int)src_ptr[3*pixel_step] * vp8_filter[5]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#elif INTERP_EXTEND == 4
Temp = ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[0] * vp8_filter[3]) +
((int)src_ptr[pixel_step] * vp8_filter[4]) +
((int)src_ptr[2 * pixel_step] * vp8_filter[5]) +
((int)src_ptr[3 * pixel_step] * vp8_filter[6]) +
((int)src_ptr[4 * pixel_step] * vp8_filter[7]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#elif INTERP_EXTEND == 5
Temp = ((int)src_ptr[-4 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[3]) +
((int)src_ptr[0] * vp8_filter[4]) +
((int)src_ptr[pixel_step] * vp8_filter[5]) +
((int)src_ptr[2 * pixel_step] * vp8_filter[6]) +
((int)src_ptr[3 * pixel_step] * vp8_filter[7]) +
((int)src_ptr[4 * pixel_step] * vp8_filter[8]) +
((int)src_ptr[5 * pixel_step] * vp8_filter[9]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#endif
/* Normalize back to 0-255 */
Temp = Temp >> VP8_FILTER_SHIFT;
if (Temp < 0)
Temp = 0;
else if (Temp > 255)
Temp = 255;
output_ptr[j] = Temp;
src_ptr++;
}
/* Next row... */
src_ptr += src_pixels_per_line - output_width;
output_ptr += output_width;
}
}
static void filter_block2d_second_pass
(
int *src_ptr,
unsigned char *output_ptr,
int output_pitch,
unsigned int src_pixels_per_line,
unsigned int pixel_step,
unsigned int output_height,
unsigned int output_width,
const short *vp8_filter
)
{
unsigned int i, j;
int Temp;
for (i = 0; i < output_height; i++)
{
for (j = 0; j < output_width; j++)
{
/* Apply filter */
#if INTERP_EXTEND == 3
Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[0] * vp8_filter[2]) +
((int)src_ptr[pixel_step] * vp8_filter[3]) +
((int)src_ptr[2*pixel_step] * vp8_filter[4]) +
((int)src_ptr[3*pixel_step] * vp8_filter[5]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#elif INTERP_EXTEND == 4
Temp = ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[0] * vp8_filter[3]) +
((int)src_ptr[pixel_step] * vp8_filter[4]) +
((int)src_ptr[2 * pixel_step] * vp8_filter[5]) +
((int)src_ptr[3 * pixel_step] * vp8_filter[6]) +
((int)src_ptr[4 * pixel_step] * vp8_filter[7]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#elif INTERP_EXTEND == 5
Temp = ((int)src_ptr[-4 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[3]) +
((int)src_ptr[0] * vp8_filter[4]) +
((int)src_ptr[pixel_step] * vp8_filter[5]) +
((int)src_ptr[2 * pixel_step] * vp8_filter[6]) +
((int)src_ptr[3 * pixel_step] * vp8_filter[7]) +
((int)src_ptr[4 * pixel_step] * vp8_filter[8]) +
((int)src_ptr[5 * pixel_step] * vp8_filter[9]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#endif
/* Normalize back to 0-255 */
Temp = Temp >> VP8_FILTER_SHIFT;
if (Temp < 0)
Temp = 0;
else if (Temp > 255)
Temp = 255;
output_ptr[j] = (unsigned char)Temp;
src_ptr++;
}
/* Start next row */
src_ptr += src_pixels_per_line - output_width;
output_ptr += output_pitch;
}
}
#if EDGE_PIXEL_FILTER > 0
static void filter_non_separable
(
unsigned char *src_ptr,
unsigned char *output_ptr,
unsigned int src_pixels_per_line,
unsigned int pixel_step,
const short *vp8_filter
)
{
int Temp;
#if EDGE_PIXEL_FILTER_EXTEND == 2
/* This code computes non-separable filtering of a pixel
* using a 4x4 neighborhood as shown where F is the pixel
* that src_ptr points to:
*
* A B C D
* E F G H
* I J K L
* M N O P
*
* The 16 filter coefficients are in row by row order
* */
Temp = ((int)src_ptr[-1 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-1 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-1 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[-1 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[3]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[4]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[5]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[6]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[7]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[8]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[9]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[10]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[11]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[12]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[13]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[14]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[15]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#elif EDGE_PIXEL_FILTER_EXTEND == 3
/* This code computes non-separable filtering of a pixel
* using a 6x6 neighborhood as shown where O is the pixel
* that src_ptr points to:
*
* A B C D E F
* G H I J K L
* M N O P Q R
* S T U V W X
* Y Z a b c d
* e f g h i j
*
* The 36 filter coefficients are in row by row order
* */
Temp = ((int)src_ptr[-2 * (int)src_pixels_per_line - 2 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-2 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-2 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[-2 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[3]) +
((int)src_ptr[-2 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[4]) +
((int)src_ptr[-2 * (int)src_pixels_per_line + 3 * (int)pixel_step] * vp8_filter[5]) +
((int)src_ptr[-1 * (int)src_pixels_per_line - 2 * (int)pixel_step] * vp8_filter[6]) +
((int)src_ptr[-1 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[7]) +
((int)src_ptr[-1 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[8]) +
((int)src_ptr[-1 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[9]) +
((int)src_ptr[-1 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[10]) +
((int)src_ptr[-1 * (int)src_pixels_per_line + 3 * (int)pixel_step] * vp8_filter[11]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line - 2 * (int)pixel_step] * vp8_filter[12]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[13]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[14]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[15]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[16]) +
((int)src_ptr[ 0 * (int)src_pixels_per_line + 3 * (int)pixel_step] * vp8_filter[17]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line - 2 * (int)pixel_step] * vp8_filter[18]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[19]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[20]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[21]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[22]) +
((int)src_ptr[ 1 * (int)src_pixels_per_line + 3 * (int)pixel_step] * vp8_filter[23]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line - 2 * (int)pixel_step] * vp8_filter[24]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[25]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[26]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[27]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[28]) +
((int)src_ptr[ 2 * (int)src_pixels_per_line + 3 * (int)pixel_step] * vp8_filter[29]) +
((int)src_ptr[ 3 * (int)src_pixels_per_line - 2 * (int)pixel_step] * vp8_filter[30]) +
((int)src_ptr[ 3 * (int)src_pixels_per_line - 1 * (int)pixel_step] * vp8_filter[31]) +
((int)src_ptr[ 3 * (int)src_pixels_per_line + 0 * (int)pixel_step] * vp8_filter[32]) +
((int)src_ptr[ 3 * (int)src_pixels_per_line + 1 * (int)pixel_step] * vp8_filter[33]) +
((int)src_ptr[ 3 * (int)src_pixels_per_line + 2 * (int)pixel_step] * vp8_filter[34]) +
((int)src_ptr[ 3 * (int)src_pixels_per_line + 3 * (int)pixel_step] * vp8_filter[35]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#endif
Temp = Temp >> VP8_FILTER_SHIFT;
if (Temp < 0)
Temp = 0;
else if (Temp > 255)
Temp = 255;
*output_ptr = Temp;
}
static void filter_edge_pixel
(
unsigned char *src_ptr,
unsigned char *output_ptr,
unsigned int src_pixels_per_line,
unsigned int pixel_step,
int xoffset,
int yoffset
)
{
const short *vp8_filter=vp8_sub_pel_filters_ns[xoffset+8*yoffset];
filter_non_separable(src_ptr, output_ptr, src_pixels_per_line, pixel_step, vp8_filter);
}
static void get_sobel_grads(unsigned char *src_ptr, int width, int height,
unsigned int src_pixels_per_line,
unsigned int *sum_g)
{
/* Assume that the block always has extension of at least 1 */
int i, j;
int gx, gy, gd, ga;
unsigned char *prev = src_ptr-src_pixels_per_line;
unsigned char *prev2 = src_ptr-2*src_pixels_per_line;
unsigned char *curr = src_ptr;
unsigned char *next = src_ptr+src_pixels_per_line;
unsigned char *next2 = src_ptr+2*src_pixels_per_line;
sum_g[0] = sum_g[1] = sum_g[2] = sum_g[3] = 0;
for (i=0; i<height; ++i)
{
for (j=0; j<width; ++j)
{
gx = abs((prev[1]-prev[-1])+((curr[1]-curr[-1])*2)+(next[1]-next[-1]));
gy = abs((prev[-1]-next[-1])+((prev[0]-next[0])*2)+(prev[1]-next[1]));
gd = abs((curr[2]-prev2[0])+((next[1]-prev[-1])*2)+(next2[0]-curr[-2]));
ga = abs((curr[2]-next2[0])+((prev[1]-next[-1])*2)+(prev2[0]-curr[-2]));
sum_g[0] += (gx>EDGE_GRAD_THRESH*4);
sum_g[1] += (gy>EDGE_GRAD_THRESH*4);
sum_g[2] += (gd>EDGE_GRAD_THRESH*4);
sum_g[3] += (ga>EDGE_GRAD_THRESH*4);
prev++;
prev2++;
curr++;
next++;
next2++;
}
prev += src_pixels_per_line-width;
curr += src_pixels_per_line-width;
next += src_pixels_per_line-width;
prev2 += src_pixels_per_line-width;
next2 += src_pixels_per_line-width;
}
}
static int edge_pixel_detected(unsigned char *src_ptr, int src_pitch)
{
unsigned int ng[4];
get_sobel_grads(src_ptr, 2, 2, src_pitch, ng);
return (ng[0] + ng[1] + ng[2] + ng[3] > EDGE_GRADS2X2_THRESH);
}
static int edge_pixel_detected_simple(unsigned char *src_ptr, int src_pitch)
{
int gmax, gmin, gmax2, gmin2;
if (src_ptr[0]>src_ptr[1])
{
gmax=src_ptr[0];
gmin=src_ptr[1];
}
else
{
gmax=src_ptr[1];
gmin=src_ptr[0];
}
src_ptr += src_pitch;
if (src_ptr[0]>src_ptr[1])
{
gmax2=src_ptr[0];
gmin2=src_ptr[1];
}
else
{
gmax2=src_ptr[1];
gmin2=src_ptr[0];
}
if (gmax2>gmax) gmax=gmax2;
if (gmin2<gmin) gmin=gmin2;
return (gmax - gmin > EDGE_SIMPLE_THRESH);
}
void vp8_edge_pixel_interpolation
(
unsigned char *src_ptr,
int src_pixels_per_line,
int width,
int height,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
unsigned char *sp = src_ptr;
unsigned char *dp = dst_ptr;
int i, j;
for (i = 0; i < height; ++i, sp+=src_pixels_per_line-width, dp+=dst_pitch-width)
for (j = 0; j < width; ++j, ++sp, ++dp)
{
if (edge_pixel_detected(sp, src_pixels_per_line))
{
filter_edge_pixel(sp, dp, src_pixels_per_line, 1, xoffset, yoffset);
}
}
}
#endif // EDGE_PIXEL_FILTER
/*
* The only functional difference between filter_block2d_second_pass()
* and this function is that filter_block2d_second_pass() does a sixtap
* filter on the input and stores it in the output. This function
* (filter_block2d_second_pass_avg()) does a sixtap filter on the input,
* and then averages that with the content already present in the output
* ((filter_result + dest + 1) >> 1) and stores that in the output.
*/
static void filter_block2d_second_pass_avg
(
int *src_ptr,
unsigned char *output_ptr,
int output_pitch,
unsigned int src_pixels_per_line,
unsigned int pixel_step,
unsigned int output_height,
unsigned int output_width,
const short *vp8_filter
)
{
unsigned int i, j;
int Temp;
for (i = 0; i < output_height; i++)
{
for (j = 0; j < output_width; j++)
{
/* Apply filter */
#if INTERP_EXTEND == 3
Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[0] * vp8_filter[2]) +
((int)src_ptr[pixel_step] * vp8_filter[3]) +
((int)src_ptr[2*pixel_step] * vp8_filter[4]) +
((int)src_ptr[3*pixel_step] * vp8_filter[5]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#elif INTERP_EXTEND == 4
Temp = ((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[0] * vp8_filter[3]) +
((int)src_ptr[pixel_step] * vp8_filter[4]) +
((int)src_ptr[2 * pixel_step] * vp8_filter[5]) +
((int)src_ptr[3 * pixel_step] * vp8_filter[6]) +
((int)src_ptr[4 * pixel_step] * vp8_filter[7]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#elif INTERP_EXTEND == 5
Temp = ((int)src_ptr[-4 * (int)pixel_step] * vp8_filter[0]) +
((int)src_ptr[-3 * (int)pixel_step] * vp8_filter[1]) +
((int)src_ptr[-2 * (int)pixel_step] * vp8_filter[2]) +
((int)src_ptr[-1 * (int)pixel_step] * vp8_filter[3]) +
((int)src_ptr[0] * vp8_filter[4]) +
((int)src_ptr[pixel_step] * vp8_filter[5]) +
((int)src_ptr[2 * pixel_step] * vp8_filter[6]) +
((int)src_ptr[3 * pixel_step] * vp8_filter[7]) +
((int)src_ptr[4 * pixel_step] * vp8_filter[8]) +
((int)src_ptr[5 * pixel_step] * vp8_filter[9]) +
(VP8_FILTER_WEIGHT >> 1); /* Rounding */
#endif
/* Normalize back to 0-255 */
Temp = Temp >> VP8_FILTER_SHIFT;
if (Temp < 0)
Temp = 0;
else if (Temp > 255)
Temp = 255;
output_ptr[j] = (unsigned char) ((output_ptr[j] + Temp + 1) >> 1);
src_ptr++;
}
/* Start next row */
src_ptr += src_pixels_per_line - output_width;
output_ptr += output_pitch;
}
}
static void filter_block2d
(
unsigned char *src_ptr,
unsigned char *output_ptr,
unsigned int src_pixels_per_line,
int output_pitch,
const short *HFilter,
const short *VFilter
)
{
int FData[(3+INTERP_EXTEND*2)*4]; /* Temp data buffer used in filtering */
/* First filter 1-D horizontally... */
filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
3+INTERP_EXTEND*2, 4, HFilter);
/* then filter verticaly... */
filter_block2d_second_pass(FData + 4*(INTERP_EXTEND-1), output_ptr, output_pitch, 4, 4, 4, 4, VFilter);
}
void vp8_sixtap_predict_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */
VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */
filter_block2d(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter);
#if CONFIG_ENHANCED_INTERP && EDGE_PIXEL_FILTER > 0
vp8_edge_pixel_interpolation(src_ptr, src_pixels_per_line, 4, 4,
xoffset, yoffset, dst_ptr, dst_pitch);
#endif
}
void vp8_sixtap_predict8x8_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
// int FData[(7+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */
int FData[(7+INTERP_EXTEND*2)*8]; /* Temp data buffer used in filtering */
HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */
VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */
/* First filter 1-D horizontally... */
filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
7+INTERP_EXTEND*2, 8, HFilter);
/* then filter verticaly... */
filter_block2d_second_pass(FData + 8*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 8, 8, 8, 8, VFilter);
#if CONFIG_ENHANCED_INTERP && EDGE_PIXEL_FILTER > 0
vp8_edge_pixel_interpolation(src_ptr, src_pixels_per_line, 8, 8,
xoffset, yoffset, dst_ptr, dst_pitch);
#endif
}
void vp8_sixtap_predict_avg8x8_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
// int FData[(7+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */
int FData[(7+INTERP_EXTEND*2)*8]; /* Temp data buffer used in filtering */
HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */
VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */
/* First filter 1-D horizontally... */
filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
7+INTERP_EXTEND*2, 8, HFilter);
/* then filter verticaly... */
filter_block2d_second_pass_avg(FData + 8*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 8, 8, 8, 8, VFilter);
#if CONFIG_ENHANCED_INTERP && EDGE_PIXEL_FILTER > 0
vp8_edge_pixel_interpolation(src_ptr, src_pixels_per_line, 8, 8,
xoffset, yoffset, dst_ptr, dst_pitch);
#endif
}
void vp8_sixtap_predict8x4_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
// int FData[(7+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */
int FData[(3+INTERP_EXTEND*2)*8]; /* Temp data buffer used in filtering */
HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */
VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */
/* First filter 1-D horizontally... */
filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
3+INTERP_EXTEND*2, 8, HFilter);
/* then filter verticaly... */
filter_block2d_second_pass(FData + 8*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 8, 8, 4, 8, VFilter);
#if CONFIG_ENHANCED_INTERP && EDGE_PIXEL_FILTER > 0
vp8_edge_pixel_interpolation(src_ptr, src_pixels_per_line, 8, 4,
xoffset, yoffset, dst_ptr, dst_pitch);
#endif
}
void vp8_sixtap_predict16x16_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
// int FData[(15+INTERP_EXTEND*2)*24]; /* Temp data buffer used in filtering */
int FData[(15+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */
HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */
VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */
/* First filter 1-D horizontally... */
filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
15+INTERP_EXTEND*2, 16, HFilter);
/* then filter verticaly... */
filter_block2d_second_pass(FData + 16*(INTERP_EXTEND-1), dst_ptr, dst_pitch, 16, 16, 16, 16, VFilter);
#if CONFIG_ENHANCED_INTERP && EDGE_PIXEL_FILTER > 0
vp8_edge_pixel_interpolation(src_ptr, src_pixels_per_line, 16, 16,
xoffset, yoffset, dst_ptr, dst_pitch);
#endif
}
void vp8_sixtap_predict_avg16x16_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
// int FData[(15+INTERP_EXTEND*2)*24]; /* Temp data buffer used in filtering */
int FData[(15+INTERP_EXTEND*2)*16]; /* Temp data buffer used in filtering */
HFilter = vp8_sub_pel_filters[xoffset]; /* 6 tap */
VFilter = vp8_sub_pel_filters[yoffset]; /* 6 tap */
/* First filter 1-D horizontally... */
filter_block2d_first_pass(src_ptr - ((INTERP_EXTEND-1) * src_pixels_per_line), FData,
src_pixels_per_line, 1, 15+INTERP_EXTEND*2, 16, HFilter);
/* then filter verticaly... */
filter_block2d_second_pass_avg(FData + 16*(INTERP_EXTEND-1), dst_ptr, dst_pitch,
16, 16, 16, 16, VFilter);
#if CONFIG_ENHANCED_INTERP && EDGE_PIXEL_FILTER > 0
vp8_edge_pixel_interpolation(src_ptr, src_pixels_per_line, 16, 16,
xoffset, yoffset, dst_ptr, dst_pitch);
#endif
}
/****************************************************************************
*
* ROUTINE : filter_block2d_bil_first_pass
*
* INPUTS : UINT8 *src_ptr : Pointer to source block.
* UINT32 src_stride : Stride of source block.
* UINT32 height : Block height.
* UINT32 width : Block width.
* INT32 *vp8_filter : Array of 2 bi-linear filter taps.
*
* OUTPUTS : INT32 *dst_ptr : Pointer to filtered block.
*
* RETURNS : void
*
* FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block
* in the horizontal direction to produce the filtered output
* block. Used to implement first-pass of 2-D separable filter.
*
* SPECIAL NOTES : Produces INT32 output to retain precision for next pass.
* Two filter taps should sum to VP8_FILTER_WEIGHT.
*
****************************************************************************/
static void filter_block2d_bil_first_pass
(
unsigned char *src_ptr,
unsigned short *dst_ptr,
unsigned int src_stride,
unsigned int height,
unsigned int width,
const short *vp8_filter
)
{
unsigned int i, j;
for (i = 0; i < height; i++)
{
for (j = 0; j < width; j++)
{
/* Apply bilinear filter */
dst_ptr[j] = (((int)src_ptr[0] * vp8_filter[0]) +
((int)src_ptr[1] * vp8_filter[1]) +
(VP8_FILTER_WEIGHT / 2)) >> VP8_FILTER_SHIFT;
src_ptr++;
}
/* Next row... */
src_ptr += src_stride - width;
dst_ptr += width;
}
}
/****************************************************************************
*
* ROUTINE : filter_block2d_bil_second_pass
*
* INPUTS : INT32 *src_ptr : Pointer to source block.
* UINT32 dst_pitch : Destination block pitch.
* UINT32 height : Block height.
* UINT32 width : Block width.
* INT32 *vp8_filter : Array of 2 bi-linear filter taps.
*
* OUTPUTS : UINT16 *dst_ptr : Pointer to filtered block.
*
* RETURNS : void
*
* FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block
* in the vertical direction to produce the filtered output
* block. Used to implement second-pass of 2-D separable filter.
*
* SPECIAL NOTES : Requires 32-bit input as produced by filter_block2d_bil_first_pass.
* Two filter taps should sum to VP8_FILTER_WEIGHT.
*
****************************************************************************/
static void filter_block2d_bil_second_pass
(
unsigned short *src_ptr,
unsigned char *dst_ptr,
int dst_pitch,
unsigned int height,
unsigned int width,
const short *vp8_filter
)
{
unsigned int i, j;
int Temp;
for (i = 0; i < height; i++)
{
for (j = 0; j < width; j++)
{
/* Apply filter */
Temp = ((int)src_ptr[0] * vp8_filter[0]) +
((int)src_ptr[width] * vp8_filter[1]) +
(VP8_FILTER_WEIGHT / 2);
dst_ptr[j] = (unsigned int)(Temp >> VP8_FILTER_SHIFT);
src_ptr++;
}
/* Next row... */
dst_ptr += dst_pitch;
}
}
/*
* As before for filter_block2d_second_pass_avg(), the functional difference
* between filter_block2d_bil_second_pass() and filter_block2d_bil_second_pass_avg()
* is that filter_block2d_bil_second_pass() does a bilinear filter on input
* and stores the result in output; filter_block2d_bil_second_pass_avg(),
* instead, does a bilinear filter on input, averages the resulting value
* with the values already present in the output and stores the result of
* that back into the output ((filter_result + dest + 1) >> 1).
*/
static void filter_block2d_bil_second_pass_avg
(
unsigned short *src_ptr,
unsigned char *dst_ptr,
int dst_pitch,
unsigned int height,
unsigned int width,
const short *vp8_filter
)
{
unsigned int i, j;
int Temp;
for (i = 0; i < height; i++)
{
for (j = 0; j < width; j++)
{
/* Apply filter */
Temp = ((int)src_ptr[0] * vp8_filter[0]) +
((int)src_ptr[width] * vp8_filter[1]) +
(VP8_FILTER_WEIGHT / 2);
dst_ptr[j] = (unsigned int)(((Temp >> VP8_FILTER_SHIFT) + dst_ptr[j] + 1) >> 1);
src_ptr++;
}
/* Next row... */
dst_ptr += dst_pitch;
}
}
/****************************************************************************
*
* ROUTINE : filter_block2d_bil
*
* INPUTS : UINT8 *src_ptr : Pointer to source block.
* UINT32 src_pitch : Stride of source block.
* UINT32 dst_pitch : Stride of destination block.
* INT32 *HFilter : Array of 2 horizontal filter taps.
* INT32 *VFilter : Array of 2 vertical filter taps.
* INT32 Width : Block width
* INT32 Height : Block height
*
* OUTPUTS : UINT16 *dst_ptr : Pointer to filtered block.
*
* RETURNS : void
*
* FUNCTION : 2-D filters an input block by applying a 2-tap
* bi-linear filter horizontally followed by a 2-tap
* bi-linear filter vertically on the result.
*
* SPECIAL NOTES : The largest block size can be handled here is 16x16
*
****************************************************************************/
static void filter_block2d_bil
(
unsigned char *src_ptr,
unsigned char *dst_ptr,
unsigned int src_pitch,
unsigned int dst_pitch,
const short *HFilter,
const short *VFilter,
int Width,
int Height
)
{
unsigned short FData[17*16]; /* Temp data buffer used in filtering */
/* First filter 1-D horizontally... */
filter_block2d_bil_first_pass(src_ptr, FData, src_pitch, Height + 1, Width, HFilter);
/* then 1-D vertically... */
filter_block2d_bil_second_pass(FData, dst_ptr, dst_pitch, Height, Width, VFilter);
}
static void filter_block2d_bil_avg
(
unsigned char *src_ptr,
unsigned char *dst_ptr,
unsigned int src_pitch,
unsigned int dst_pitch,
const short *HFilter,
const short *VFilter,
int Width,
int Height
)
{
unsigned short FData[17*16]; /* Temp data buffer used in filtering */
/* First filter 1-D horizontally... */
filter_block2d_bil_first_pass(src_ptr, FData, src_pitch, Height + 1, Width, HFilter);
/* then 1-D vertically... */
filter_block2d_bil_second_pass_avg(FData, dst_ptr, dst_pitch, Height, Width, VFilter);
}
void vp8_bilinear_predict4x4_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
HFilter = vp8_bilinear_filters[xoffset];
VFilter = vp8_bilinear_filters[yoffset];
#if 0
{
int i;
unsigned char temp1[16];
unsigned char temp2[16];
bilinear_predict4x4_mmx(src_ptr, src_pixels_per_line, xoffset, yoffset, temp1, 4);
filter_block2d_bil(src_ptr, temp2, src_pixels_per_line, 4, HFilter, VFilter, 4, 4);
for (i = 0; i < 16; i++)
{
if (temp1[i] != temp2[i])
{
bilinear_predict4x4_mmx(src_ptr, src_pixels_per_line, xoffset, yoffset, temp1, 4);
filter_block2d_bil(src_ptr, temp2, src_pixels_per_line, 4, HFilter, VFilter, 4, 4);
}
}
}
#endif
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 4, 4);
}
void vp8_bilinear_predict8x8_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
HFilter = vp8_bilinear_filters[xoffset];
VFilter = vp8_bilinear_filters[yoffset];
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 8);
}
void vp8_bilinear_predict_avg8x8_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
HFilter = vp8_bilinear_filters[xoffset];
VFilter = vp8_bilinear_filters[yoffset];
filter_block2d_bil_avg(src_ptr, dst_ptr, src_pixels_per_line,
dst_pitch, HFilter, VFilter, 8, 8);
}
void vp8_bilinear_predict8x4_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
HFilter = vp8_bilinear_filters[xoffset];
VFilter = vp8_bilinear_filters[yoffset];
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 4);
}
void vp8_bilinear_predict16x16_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
HFilter = vp8_bilinear_filters[xoffset];
VFilter = vp8_bilinear_filters[yoffset];
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 16, 16);
}
void vp8_bilinear_predict_avg16x16_c
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
HFilter = vp8_bilinear_filters[xoffset];
VFilter = vp8_bilinear_filters[yoffset];
filter_block2d_bil_avg(src_ptr, dst_ptr, src_pixels_per_line,
dst_pitch, HFilter, VFilter, 16, 16);
}