75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
/*
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* Copyright (c) 2012 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 "vpx_config.h"
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#if CONFIG_ROTATION
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typedef struct {
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int y;
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int x;
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unsigned long t;
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} tap;
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typedef struct {
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tap pt[4];
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} point_taps;
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typedef struct {
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point_taps pt[256];
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} mb_taps;
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mb_taps mt_8x8[] = {
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#include "rotate2.h"
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};
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mb_taps mt[] = {
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#include "rotate.h"
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};
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void predict_rotated_16x16(int rotation_index, unsigned char *src, int sp,
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unsigned char *dst, int dp) {
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int i, j, k, p = 0;
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for (i = 0; i < 16; i++, dst += dp) {
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for (j = 0; j < 16; j++, p++) {
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unsigned int sum = 32768;
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for (k = 0; k < 4; k++) {
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tap *tp = &mt[rotation_index].pt[p].pt[k];
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sum += src[tp->y * sp + tp->x] * tp->t;
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}
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sum >>= 16;
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dst[j] = sum;
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}
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}
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}
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void predict_rotated_8x8(int rotation_index, unsigned char *src, int sp,
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unsigned char *dst, int dp) {
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int i, j, k, p = 0;
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for (i = 0; i < 8; i++, dst += dp) {
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for (j = 0; j < 8; j++, p++) {
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unsigned int sum = 32768;
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for (k = 0; k < 4; k++) {
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tap *tp = &mt_8x8[rotation_index].pt[p].pt[k];
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sum += src[tp->y * sp + tp->x] * tp->t;
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}
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sum >>= 16;
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dst[j] = sum;
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}
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}
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}
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#endif
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