1160 lines
44 KiB
C
1160 lines
44 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdlib.h>
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#include "filter.h"
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#include "vpx_ports/mem.h"
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#include "vpx_rtcd.h"
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DECLARE_ALIGNED(16, const short, vp9_bilinear_filters[SUBPEL_SHIFTS][2]) = {
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{ 128, 0 },
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{ 120, 8 },
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{ 112, 16 },
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{ 104, 24 },
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{ 96, 32 },
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{ 88, 40 },
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{ 80, 48 },
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{ 72, 56 },
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{ 64, 64 },
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{ 56, 72 },
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{ 48, 80 },
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{ 40, 88 },
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{ 32, 96 },
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{ 24, 104 },
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{ 16, 112 },
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{ 8, 120 }
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};
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#define FILTER_ALPHA 0
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#define FILTER_ALPHA_SHARP 1
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DECLARE_ALIGNED(16, const short, vp9_sub_pel_filters_8[SUBPEL_SHIFTS][8]) = {
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#if FILTER_ALPHA == 0
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/* Lagrangian interpolation filter */
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{ 0, 0, 0, 128, 0, 0, 0, 0},
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{ 0, 1, -5, 126, 8, -3, 1, 0},
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{ -1, 3, -10, 122, 18, -6, 2, 0},
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{ -1, 4, -13, 118, 27, -9, 3, -1},
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{ -1, 4, -16, 112, 37, -11, 4, -1},
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{ -1, 5, -18, 105, 48, -14, 4, -1},
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{ -1, 5, -19, 97, 58, -16, 5, -1},
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{ -1, 6, -19, 88, 68, -18, 5, -1},
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{ -1, 6, -19, 78, 78, -19, 6, -1},
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{ -1, 5, -18, 68, 88, -19, 6, -1},
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{ -1, 5, -16, 58, 97, -19, 5, -1},
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{ -1, 4, -14, 48, 105, -18, 5, -1},
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{ -1, 4, -11, 37, 112, -16, 4, -1},
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{ -1, 3, -9, 27, 118, -13, 4, -1},
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{ 0, 2, -6, 18, 122, -10, 3, -1},
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{ 0, 1, -3, 8, 126, -5, 1, 0}
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#elif FILTER_ALPHA == 50
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/* Generated using MATLAB:
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* alpha = 0.5;
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* b=intfilt(8,4,alpha);
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* bi=round(128*b);
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* ba=flipud(reshape([bi 0], 8, 8));
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* disp(num2str(ba, '%d,'))
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*/
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{ 0, 0, 0, 128, 0, 0, 0, 0},
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{ 0, 1, -5, 126, 8, -3, 1, 0},
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{ 0, 2, -10, 122, 18, -6, 2, 0},
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{ -1, 3, -13, 118, 27, -9, 3, 0},
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{ -1, 4, -16, 112, 37, -11, 3, 0},
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{ -1, 5, -17, 104, 48, -14, 4, -1},
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{ -1, 5, -18, 96, 58, -16, 5, -1},
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{ -1, 5, -19, 88, 68, -17, 5, -1},
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{ -1, 5, -18, 78, 78, -18, 5, -1},
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{ -1, 5, -17, 68, 88, -19, 5, -1},
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{ -1, 5, -16, 58, 96, -18, 5, -1},
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{ -1, 4, -14, 48, 104, -17, 5, -1},
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{ 0, 3, -11, 37, 112, -16, 4, -1},
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{ 0, 3, -9, 27, 118, -13, 3, -1},
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{ 0, 2, -6, 18, 122, -10, 2, 0},
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{ 0, 1, -3, 8, 126, -5, 1, 0}
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#endif /* FILTER_ALPHA */
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};
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DECLARE_ALIGNED(16, const short, vp9_sub_pel_filters_8s[SUBPEL_SHIFTS][8]) = {
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#if FILTER_ALPHA_SHARP == 1
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/* dct based filter */
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{0, 0, 0, 128, 0, 0, 0, 0},
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{-1, 3, -7, 127, 8, -3, 1, 0},
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{-2, 5, -13, 125, 17, -6, 3, -1},
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{-3, 7, -17, 121, 27, -10, 5, -2},
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{-4, 9, -20, 115, 37, -13, 6, -2},
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{-4, 10, -23, 108, 48, -16, 8, -3},
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{-4, 10, -24, 100, 59, -19, 9, -3},
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{-4, 11, -24, 90, 70, -21, 10, -4},
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{-4, 11, -23, 80, 80, -23, 11, -4},
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{-4, 10, -21, 70, 90, -24, 11, -4},
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{-3, 9, -19, 59, 100, -24, 10, -4},
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{-3, 8, -16, 48, 108, -23, 10, -4},
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{-2, 6, -13, 37, 115, -20, 9, -4},
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{-2, 5, -10, 27, 121, -17, 7, -3},
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{-1, 3, -6, 17, 125, -13, 5, -2},
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{0, 1, -3, 8, 127, -7, 3, -1}
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#elif FILTER_ALPHA_SHARP == 75
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/* alpha = 0.75 */
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{0, 0, 0, 128, 0, 0, 0, 0},
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{-1, 2, -6, 126, 9, -3, 2, -1},
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{-1, 4, -11, 123, 18, -7, 3, -1},
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{-2, 6, -16, 119, 28, -10, 5, -2},
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{-2, 7, -19, 113, 38, -13, 6, -2},
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{-3, 8, -21, 106, 49, -16, 7, -2},
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{-3, 9, -22, 99, 59, -19, 8, -3},
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{-3, 9, -23, 90, 70, -21, 9, -3},
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{-3, 9, -22, 80, 80, -22, 9, -3},
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{-3, 9, -21, 70, 90, -23, 9, -3},
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{-3, 8, -19, 59, 99, -22, 9, -3},
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{-2, 7, -16, 49, 106, -21, 8, -3},
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{-2, 6, -13, 38, 113, -19, 7, -2},
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{-2, 5, -10, 28, 119, -16, 6, -2},
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{-1, 3, -7, 18, 123, -11, 4, -1},
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{-1, 2, -3, 9, 126, -6, 2, -1}
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#endif /* FILTER_ALPHA_SHARP */
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};
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DECLARE_ALIGNED(16, const short, vp9_sub_pel_filters_6[SUBPEL_SHIFTS][6]) = {
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{0, 0, 128, 0, 0, 0},
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{1, -5, 125, 8, -2, 1},
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{1, -8, 122, 17, -5, 1},
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{2, -11, 116, 27, -8, 2},
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{3, -14, 110, 37, -10, 2},
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{3, -15, 103, 47, -12, 2},
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{3, -16, 95, 57, -14, 3},
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{3, -16, 86, 67, -15, 3},
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{3, -16, 77, 77, -16, 3},
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{3, -15, 67, 86, -16, 3},
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{3, -14, 57, 95, -16, 3},
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{2, -12, 47, 103, -15, 3},
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{2, -10, 37, 110, -14, 3},
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{2, -8, 27, 116, -11, 2},
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{1, -5, 17, 122, -8, 1},
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{1, -2, 8, 125, -5, 1}
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};
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static void filter_block2d_first_pass_6(unsigned char *src_ptr,
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int *output_ptr,
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unsigned int src_pixels_per_line,
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unsigned int pixel_step,
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unsigned int output_height,
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unsigned int output_width,
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const short *vp9_filter) {
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unsigned int i, j;
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int Temp;
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for (i = 0; i < output_height; i++) {
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for (j = 0; j < output_width; j++) {
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Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp9_filter[0]) +
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((int)src_ptr[-1 * (int)pixel_step] * vp9_filter[1]) +
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((int)src_ptr[0] * vp9_filter[2]) +
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((int)src_ptr[pixel_step] * vp9_filter[3]) +
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((int)src_ptr[2 * pixel_step] * vp9_filter[4]) +
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((int)src_ptr[3 * pixel_step] * vp9_filter[5]) +
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(VP9_FILTER_WEIGHT >> 1); /* Rounding */
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/* Normalize back to 0-255 */
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Temp = Temp >> VP9_FILTER_SHIFT;
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if (Temp < 0)
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Temp = 0;
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else if (Temp > 255)
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Temp = 255;
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output_ptr[j] = Temp;
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src_ptr++;
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}
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/* Next row... */
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src_ptr += src_pixels_per_line - output_width;
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output_ptr += output_width;
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}
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}
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static void filter_block2d_second_pass_6(int *src_ptr,
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unsigned char *output_ptr,
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int output_pitch,
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unsigned int src_pixels_per_line,
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unsigned int pixel_step,
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unsigned int output_height,
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unsigned int output_width,
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const short *vp9_filter) {
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unsigned int i, j;
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int Temp;
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for (i = 0; i < output_height; i++) {
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for (j = 0; j < output_width; j++) {
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/* Apply filter */
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Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp9_filter[0]) +
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((int)src_ptr[-1 * (int)pixel_step] * vp9_filter[1]) +
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((int)src_ptr[0] * vp9_filter[2]) +
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((int)src_ptr[pixel_step] * vp9_filter[3]) +
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((int)src_ptr[2 * pixel_step] * vp9_filter[4]) +
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((int)src_ptr[3 * pixel_step] * vp9_filter[5]) +
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(VP9_FILTER_WEIGHT >> 1); /* Rounding */
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/* Normalize back to 0-255 */
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Temp = Temp >> VP9_FILTER_SHIFT;
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if (Temp < 0)
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Temp = 0;
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else if (Temp > 255)
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Temp = 255;
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output_ptr[j] = (unsigned char)Temp;
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src_ptr++;
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}
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/* Start next row */
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src_ptr += src_pixels_per_line - output_width;
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output_ptr += output_pitch;
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}
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}
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/*
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* The only functional difference between filter_block2d_second_pass()
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* and this function is that filter_block2d_second_pass() does a sixtap
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* filter on the input and stores it in the output. This function
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* (filter_block2d_second_pass_avg()) does a sixtap filter on the input,
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* and then averages that with the content already present in the output
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* ((filter_result + dest + 1) >> 1) and stores that in the output.
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*/
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static void filter_block2d_second_pass_avg_6(int *src_ptr,
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unsigned char *output_ptr,
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int output_pitch,
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unsigned int src_pixels_per_line,
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unsigned int pixel_step,
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unsigned int output_height,
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unsigned int output_width,
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const short *vp9_filter) {
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unsigned int i, j;
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int Temp;
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for (i = 0; i < output_height; i++) {
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for (j = 0; j < output_width; j++) {
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/* Apply filter */
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Temp = ((int)src_ptr[-2 * (int)pixel_step] * vp9_filter[0]) +
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((int)src_ptr[-1 * (int)pixel_step] * vp9_filter[1]) +
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((int)src_ptr[0] * vp9_filter[2]) +
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((int)src_ptr[pixel_step] * vp9_filter[3]) +
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((int)src_ptr[2 * pixel_step] * vp9_filter[4]) +
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((int)src_ptr[3 * pixel_step] * vp9_filter[5]) +
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(VP9_FILTER_WEIGHT >> 1); /* Rounding */
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/* Normalize back to 0-255 */
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Temp = Temp >> VP9_FILTER_SHIFT;
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if (Temp < 0)
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Temp = 0;
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else if (Temp > 255)
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Temp = 255;
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output_ptr[j] = (unsigned char)((output_ptr[j] + Temp + 1) >> 1);
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src_ptr++;
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}
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/* Start next row */
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src_ptr += src_pixels_per_line - output_width;
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output_ptr += output_pitch;
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}
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}
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#define Interp_Extend 3
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static void filter_block2d_6(unsigned char *src_ptr,
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unsigned char *output_ptr,
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unsigned int src_pixels_per_line,
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int output_pitch,
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const short *HFilter,
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const short *VFilter) {
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int FData[(3 + Interp_Extend * 2) * 4]; /* Temp data buffer used in filtering */
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/* First filter 1-D horizontally... */
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filter_block2d_first_pass_6(src_ptr - ((Interp_Extend - 1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
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3 + Interp_Extend * 2, 4, HFilter);
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/* then filter verticaly... */
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filter_block2d_second_pass_6(FData + 4 * (Interp_Extend - 1), output_ptr, output_pitch, 4, 4, 4, 4, VFilter);
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}
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void vp9_sixtap_predict_c(unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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unsigned char *dst_ptr,
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int dst_pitch) {
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const short *HFilter;
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const short *VFilter;
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HFilter = vp9_sub_pel_filters_6[xoffset]; /* 6 tap */
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VFilter = vp9_sub_pel_filters_6[yoffset]; /* 6 tap */
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filter_block2d_6(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter);
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}
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/*
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* The difference between filter_block2d_6() and filter_block2d_avg_6 is
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* that filter_block2d_6() does a 6-tap filter and stores it in the output
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* buffer, whereas filter_block2d_avg_6() does the same 6-tap filter, and
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* then averages that with the content already present in the output
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* ((filter_result + dest + 1) >> 1) and stores that in the output.
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*/
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static void filter_block2d_avg_6(unsigned char *src_ptr,
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unsigned char *output_ptr,
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unsigned int src_pixels_per_line,
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int output_pitch,
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const short *HFilter,
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const short *VFilter) {
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int FData[(3 + Interp_Extend * 2) * 4]; /* Temp data buffer used in filtering */
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/* First filter 1-D horizontally... */
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filter_block2d_first_pass_6(src_ptr - ((Interp_Extend - 1) * src_pixels_per_line),
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FData, src_pixels_per_line, 1,
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3 + Interp_Extend * 2, 4, HFilter);
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/* then filter verticaly... */
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filter_block2d_second_pass_avg_6(FData + 4 * (Interp_Extend - 1), output_ptr,
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output_pitch, 4, 4, 4, 4, VFilter);
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}
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void vp9_sixtap_predict_avg_c
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(
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unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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unsigned char *dst_ptr,
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int dst_pitch
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) {
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const short *HFilter;
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const short *VFilter;
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HFilter = vp9_sub_pel_filters_6[xoffset]; /* 6 tap */
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VFilter = vp9_sub_pel_filters_6[yoffset]; /* 6 tap */
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filter_block2d_avg_6(src_ptr, dst_ptr, src_pixels_per_line,
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dst_pitch, HFilter, VFilter);
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}
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void vp9_sixtap_predict8x8_c
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(
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unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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unsigned char *dst_ptr,
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int dst_pitch
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) {
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const short *HFilter;
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const short *VFilter;
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// int FData[(7+Interp_Extend*2)*16]; /* Temp data buffer used in filtering */
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int FData[(7 + Interp_Extend * 2) * 8]; /* Temp data buffer used in filtering */
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HFilter = vp9_sub_pel_filters_6[xoffset]; /* 6 tap */
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VFilter = vp9_sub_pel_filters_6[yoffset]; /* 6 tap */
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/* First filter 1-D horizontally... */
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filter_block2d_first_pass_6(src_ptr - ((Interp_Extend - 1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
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7 + Interp_Extend * 2, 8, HFilter);
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/* then filter verticaly... */
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filter_block2d_second_pass_6(FData + 8 * (Interp_Extend - 1), dst_ptr, dst_pitch, 8, 8, 8, 8, VFilter);
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}
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void vp9_sixtap_predict_avg8x8_c
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(
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unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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unsigned char *dst_ptr,
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int dst_pitch
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) {
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const short *HFilter;
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const short *VFilter;
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// int FData[(7+Interp_Extend*2)*16]; /* Temp data buffer used in filtering */
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int FData[(7 + Interp_Extend * 2) * 8]; /* Temp data buffer used in filtering */
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HFilter = vp9_sub_pel_filters_6[xoffset]; /* 6 tap */
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VFilter = vp9_sub_pel_filters_6[yoffset]; /* 6 tap */
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/* First filter 1-D horizontally... */
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filter_block2d_first_pass_6(src_ptr - ((Interp_Extend - 1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
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7 + Interp_Extend * 2, 8, HFilter);
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/* then filter verticaly... */
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filter_block2d_second_pass_avg_6(FData + 8 * (Interp_Extend - 1), dst_ptr, dst_pitch, 8, 8, 8, 8, VFilter);
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}
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void vp9_sixtap_predict8x4_c
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(
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unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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unsigned char *dst_ptr,
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int dst_pitch
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) {
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const short *HFilter;
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const short *VFilter;
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// int FData[(7+Interp_Extend*2)*16]; /* Temp data buffer used in filtering */
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int FData[(3 + Interp_Extend * 2) * 8]; /* Temp data buffer used in filtering */
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HFilter = vp9_sub_pel_filters_6[xoffset]; /* 6 tap */
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VFilter = vp9_sub_pel_filters_6[yoffset]; /* 6 tap */
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/* First filter 1-D horizontally... */
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filter_block2d_first_pass_6(src_ptr - ((Interp_Extend - 1) * src_pixels_per_line), FData, src_pixels_per_line, 1,
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3 + Interp_Extend * 2, 8, HFilter);
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/* then filter verticaly... */
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filter_block2d_second_pass_6(FData + 8 * (Interp_Extend - 1), dst_ptr, dst_pitch, 8, 8, 4, 8, VFilter);
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}
|
|
|
|
void vp9_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 = vp9_sub_pel_filters_6[xoffset]; /* 6 tap */
|
|
VFilter = vp9_sub_pel_filters_6[yoffset]; /* 6 tap */
|
|
|
|
/* First filter 1-D horizontally... */
|
|
filter_block2d_first_pass_6(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_6(FData + 16 * (Interp_Extend - 1), dst_ptr, dst_pitch, 16, 16, 16, 16, VFilter);
|
|
|
|
}
|
|
|
|
void vp9_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 = vp9_sub_pel_filters_6[xoffset]; /* 6 tap */
|
|
VFilter = vp9_sub_pel_filters_6[yoffset]; /* 6 tap */
|
|
|
|
/* First filter 1-D horizontally... */
|
|
filter_block2d_first_pass_6(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_6(FData + 16 * (Interp_Extend - 1), dst_ptr, dst_pitch,
|
|
16, 16, 16, 16, VFilter);
|
|
}
|
|
|
|
typedef enum {
|
|
VPX_FILTER_4x4 = 0,
|
|
VPX_FILTER_8x8 = 1,
|
|
VPX_FILTER_8x4 = 2,
|
|
VPX_FILTER_16x16 = 3,
|
|
} filter_size_t;
|
|
|
|
static const unsigned int filter_size_to_wh[][2] = {
|
|
{4, 4},
|
|
{8, 8},
|
|
{8, 4},
|
|
{16,16},
|
|
};
|
|
|
|
static const unsigned int filter_max_height = 16;
|
|
static const unsigned int filter_max_width = 16;
|
|
|
|
static void filter_block2d_8_c(const unsigned char *src_ptr,
|
|
const unsigned int src_stride,
|
|
const short *HFilter,
|
|
const short *VFilter,
|
|
const filter_size_t filter_size,
|
|
unsigned char *dst_ptr,
|
|
unsigned int dst_stride) {
|
|
const unsigned int output_width = filter_size_to_wh[filter_size][0];
|
|
const unsigned int output_height = filter_size_to_wh[filter_size][1];
|
|
|
|
// Between passes, we use an intermediate buffer whose height is extended to
|
|
// have enough horizontally filtered values as input for the vertical pass.
|
|
// This buffer is allocated to be big enough for the largest block type we
|
|
// support.
|
|
const int kInterp_Extend = 4;
|
|
const unsigned int intermediate_height =
|
|
(kInterp_Extend - 1) + output_height + kInterp_Extend;
|
|
const unsigned int max_intermediate_height =
|
|
(kInterp_Extend - 1) + filter_max_height + kInterp_Extend;
|
|
#ifdef _MSC_VER
|
|
// MSVC does not support C99 style declaration
|
|
unsigned char intermediate_buffer[23 * 16];
|
|
#else
|
|
unsigned char intermediate_buffer[max_intermediate_height * filter_max_width];
|
|
#endif
|
|
const int intermediate_next_stride = 1 - intermediate_height * output_width;
|
|
|
|
// Horizontal pass (src -> transposed intermediate).
|
|
{
|
|
unsigned char *output_ptr = intermediate_buffer;
|
|
const int src_next_row_stride = src_stride - output_width;
|
|
unsigned int i, j;
|
|
src_ptr -= (kInterp_Extend - 1) * src_stride + (kInterp_Extend - 1);
|
|
for (i = 0; i < intermediate_height; i++) {
|
|
for (j = 0; j < output_width; j++) {
|
|
// Apply filter...
|
|
int temp = ((int)src_ptr[0] * HFilter[0]) +
|
|
((int)src_ptr[1] * HFilter[1]) +
|
|
((int)src_ptr[2] * HFilter[2]) +
|
|
((int)src_ptr[3] * HFilter[3]) +
|
|
((int)src_ptr[4] * HFilter[4]) +
|
|
((int)src_ptr[5] * HFilter[5]) +
|
|
((int)src_ptr[6] * HFilter[6]) +
|
|
((int)src_ptr[7] * HFilter[7]) +
|
|
(VP9_FILTER_WEIGHT >> 1); // Rounding
|
|
|
|
// Normalize back to 0-255...
|
|
temp >>= VP9_FILTER_SHIFT;
|
|
if (temp < 0) {
|
|
temp = 0;
|
|
} else if (temp > 255) {
|
|
temp = 255;
|
|
}
|
|
src_ptr++;
|
|
*output_ptr = temp;
|
|
output_ptr += intermediate_height;
|
|
}
|
|
src_ptr += src_next_row_stride;
|
|
output_ptr += intermediate_next_stride;
|
|
}
|
|
}
|
|
|
|
// Vertical pass (transposed intermediate -> dst).
|
|
{
|
|
unsigned char *src_ptr = intermediate_buffer;
|
|
const int dst_next_row_stride = dst_stride - output_width;
|
|
unsigned int i, j;
|
|
for (i = 0; i < output_height; i++) {
|
|
for (j = 0; j < output_width; j++) {
|
|
// Apply filter...
|
|
int temp = ((int)src_ptr[0] * VFilter[0]) +
|
|
((int)src_ptr[1] * VFilter[1]) +
|
|
((int)src_ptr[2] * VFilter[2]) +
|
|
((int)src_ptr[3] * VFilter[3]) +
|
|
((int)src_ptr[4] * VFilter[4]) +
|
|
((int)src_ptr[5] * VFilter[5]) +
|
|
((int)src_ptr[6] * VFilter[6]) +
|
|
((int)src_ptr[7] * VFilter[7]) +
|
|
(VP9_FILTER_WEIGHT >> 1); // Rounding
|
|
|
|
// Normalize back to 0-255...
|
|
temp >>= VP9_FILTER_SHIFT;
|
|
if (temp < 0) {
|
|
temp = 0;
|
|
} else if (temp > 255) {
|
|
temp = 255;
|
|
}
|
|
|
|
src_ptr += intermediate_height;
|
|
*dst_ptr++ = (unsigned char)temp;
|
|
}
|
|
src_ptr += intermediate_next_stride;
|
|
dst_ptr += dst_next_row_stride;
|
|
}
|
|
}
|
|
}
|
|
|
|
void vp9_filter_block2d_4x4_8_c(const unsigned char *src_ptr,
|
|
const unsigned int src_stride,
|
|
const short *HFilter_aligned16,
|
|
const short *VFilter_aligned16,
|
|
unsigned char *dst_ptr,
|
|
unsigned int dst_stride) {
|
|
filter_block2d_8_c(src_ptr, src_stride,
|
|
HFilter_aligned16, VFilter_aligned16,
|
|
VPX_FILTER_4x4, dst_ptr, dst_stride);
|
|
}
|
|
|
|
void vp9_filter_block2d_8x4_8_c(const unsigned char *src_ptr,
|
|
const unsigned int src_stride,
|
|
const short *HFilter_aligned16,
|
|
const short *VFilter_aligned16,
|
|
unsigned char *dst_ptr,
|
|
unsigned int dst_stride) {
|
|
filter_block2d_8_c(src_ptr, src_stride,
|
|
HFilter_aligned16, VFilter_aligned16,
|
|
VPX_FILTER_8x4, dst_ptr, dst_stride);
|
|
}
|
|
|
|
void vp9_filter_block2d_8x8_8_c(const unsigned char *src_ptr,
|
|
const unsigned int src_stride,
|
|
const short *HFilter_aligned16,
|
|
const short *VFilter_aligned16,
|
|
unsigned char *dst_ptr,
|
|
unsigned int dst_stride) {
|
|
filter_block2d_8_c(src_ptr, src_stride,
|
|
HFilter_aligned16, VFilter_aligned16,
|
|
VPX_FILTER_8x8, dst_ptr, dst_stride);
|
|
}
|
|
|
|
void vp9_filter_block2d_16x16_8_c(const unsigned char *src_ptr,
|
|
const unsigned int src_stride,
|
|
const short *HFilter_aligned16,
|
|
const short *VFilter_aligned16,
|
|
unsigned char *dst_ptr,
|
|
unsigned int dst_stride) {
|
|
filter_block2d_8_c(src_ptr, src_stride,
|
|
HFilter_aligned16, VFilter_aligned16,
|
|
VPX_FILTER_16x16, dst_ptr, dst_stride);
|
|
}
|
|
|
|
static void block2d_average_c(unsigned char *src,
|
|
unsigned int src_stride,
|
|
unsigned char *output_ptr,
|
|
unsigned int output_stride,
|
|
const filter_size_t filter_size) {
|
|
const unsigned int output_width = filter_size_to_wh[filter_size][0];
|
|
const unsigned int output_height = filter_size_to_wh[filter_size][1];
|
|
|
|
unsigned int i, j;
|
|
for (i = 0; i < output_height; i++) {
|
|
for (j = 0; j < output_width; j++) {
|
|
output_ptr[j] = (output_ptr[j] + src[i * src_stride + j] + 1) >> 1;
|
|
}
|
|
output_ptr += output_stride;
|
|
}
|
|
}
|
|
|
|
#define block2d_average block2d_average_c
|
|
|
|
void vp9_eighttap_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 = vp9_sub_pel_filters_8[xoffset];
|
|
VFilter = vp9_sub_pel_filters_8[yoffset];
|
|
|
|
vp9_filter_block2d_4x4_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_predict_avg4x4_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
const short *HFilter = vp9_sub_pel_filters_8[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8[yoffset];
|
|
unsigned char tmp[4 * 4];
|
|
|
|
vp9_filter_block2d_4x4_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
tmp, 4);
|
|
block2d_average(tmp, 4, dst_ptr, dst_pitch, VPX_FILTER_4x4);
|
|
}
|
|
|
|
void vp9_eighttap_predict_sharp_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 = vp9_sub_pel_filters_8s[xoffset];
|
|
VFilter = vp9_sub_pel_filters_8s[yoffset];
|
|
|
|
vp9_filter_block2d_4x4_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_predict_avg4x4_sharp_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
const short *HFilter = vp9_sub_pel_filters_8s[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8s[yoffset];
|
|
unsigned char tmp[4 * 4];
|
|
|
|
vp9_filter_block2d_4x4_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
tmp, 4);
|
|
block2d_average(tmp, 4, dst_ptr, dst_pitch, VPX_FILTER_4x4);
|
|
}
|
|
|
|
void vp9_eighttap_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 = vp9_sub_pel_filters_8[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8[yoffset];
|
|
|
|
vp9_filter_block2d_8x8_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_predict8x8_sharp_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
const short *HFilter = vp9_sub_pel_filters_8s[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8s[yoffset];
|
|
|
|
vp9_filter_block2d_8x8_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_predict_avg8x8_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
unsigned char tmp[8 * 8];
|
|
const short *HFilter = vp9_sub_pel_filters_8[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8[yoffset];
|
|
|
|
vp9_filter_block2d_8x8_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
tmp, 8);
|
|
block2d_average(tmp, 8, dst_ptr, dst_pitch, VPX_FILTER_8x8);
|
|
}
|
|
|
|
void vp9_eighttap_predict_avg8x8_sharp_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
unsigned char tmp[8 * 8];
|
|
const short *HFilter = vp9_sub_pel_filters_8s[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8s[yoffset];
|
|
|
|
vp9_filter_block2d_8x8_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
tmp, 8);
|
|
block2d_average(tmp, 8, dst_ptr, dst_pitch, VPX_FILTER_8x8);
|
|
}
|
|
|
|
void vp9_eighttap_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 = vp9_sub_pel_filters_8[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8[yoffset];
|
|
|
|
vp9_filter_block2d_8x4_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_predict8x4_sharp_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
const short *HFilter = vp9_sub_pel_filters_8s[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8s[yoffset];
|
|
|
|
vp9_filter_block2d_8x4_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_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 = vp9_sub_pel_filters_8[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8[yoffset];
|
|
|
|
vp9_filter_block2d_16x16_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_predict16x16_sharp_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
const short *HFilter = vp9_sub_pel_filters_8s[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8s[yoffset];
|
|
|
|
vp9_filter_block2d_16x16_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
dst_ptr, dst_pitch);
|
|
}
|
|
|
|
void vp9_eighttap_predict_avg16x16_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
DECLARE_ALIGNED_ARRAY(16, unsigned char, tmp, 16 * 16);
|
|
const short *HFilter = vp9_sub_pel_filters_8[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8[yoffset];
|
|
|
|
vp9_filter_block2d_16x16_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
tmp, 16);
|
|
block2d_average(tmp, 16, dst_ptr, dst_pitch, VPX_FILTER_16x16);
|
|
}
|
|
|
|
void vp9_eighttap_predict_avg16x16_sharp_c(unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
unsigned char *dst_ptr,
|
|
int dst_pitch) {
|
|
DECLARE_ALIGNED_ARRAY(16, unsigned char, tmp, 16 * 16);
|
|
const short *HFilter = vp9_sub_pel_filters_8s[xoffset];
|
|
const short *VFilter = vp9_sub_pel_filters_8s[yoffset];
|
|
|
|
vp9_filter_block2d_16x16_8(src_ptr, src_pixels_per_line,
|
|
HFilter, VFilter,
|
|
tmp, 16);
|
|
block2d_average(tmp, 16, dst_ptr, dst_pitch, VPX_FILTER_16x16);
|
|
}
|
|
|
|
/****************************************************************************
|
|
*
|
|
* 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 *vp9_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 VP9_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 *vp9_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] * vp9_filter[0]) +
|
|
((int)src_ptr[1] * vp9_filter[1]) +
|
|
(VP9_FILTER_WEIGHT / 2)) >> VP9_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 *vp9_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 VP9_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 *vp9_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] * vp9_filter[0]) +
|
|
((int)src_ptr[width] * vp9_filter[1]) +
|
|
(VP9_FILTER_WEIGHT / 2);
|
|
dst_ptr[j] = (unsigned int)(Temp >> VP9_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 *vp9_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] * vp9_filter[0]) +
|
|
((int)src_ptr[width] * vp9_filter[1]) +
|
|
(VP9_FILTER_WEIGHT / 2);
|
|
dst_ptr[j] = (unsigned int)(((Temp >> VP9_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 vp9_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 = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 4, 4);
|
|
}
|
|
|
|
void vp9_bilinear_predict_avg4x4_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 = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
filter_block2d_bil_avg(src_ptr, dst_ptr, src_pixels_per_line,
|
|
dst_pitch, HFilter, VFilter, 4, 4);
|
|
}
|
|
|
|
void vp9_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 = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 8);
|
|
|
|
}
|
|
|
|
void vp9_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 = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
filter_block2d_bil_avg(src_ptr, dst_ptr, src_pixels_per_line,
|
|
dst_pitch, HFilter, VFilter, 8, 8);
|
|
}
|
|
|
|
void vp9_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 = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 8, 4);
|
|
|
|
}
|
|
|
|
void vp9_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 = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
filter_block2d_bil(src_ptr, dst_ptr, src_pixels_per_line, dst_pitch, HFilter, VFilter, 16, 16);
|
|
}
|
|
|
|
void vp9_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 = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
filter_block2d_bil_avg(src_ptr, dst_ptr, src_pixels_per_line,
|
|
dst_pitch, HFilter, VFilter, 16, 16);
|
|
}
|