| /* |
| * Copyright (c) 2015 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 <stdio.h> |
| #include <stdlib.h> |
| #include <memory.h> |
| #include <math.h> |
| #include <assert.h> |
| |
| #include "vp10/common/warped_motion.h" |
| |
| |
| typedef void (*projectPointsType)(int *mat, |
| int *points, |
| int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y); |
| |
| static void projectPointsHomography(int *mat, |
| int *points, |
| int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y); |
| static void projectPointsAffine(int *mat, |
| int *points, |
| int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y); |
| static void projectPointsRotZoom(int *mat, |
| int *points, |
| int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y); |
| static void projectPointsTranslation(int *mat, |
| int *points, |
| int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y); |
| |
| static projectPointsType get_projectPointsType(TransformationType type) { |
| switch (type) { |
| case HOMOGRAPHY: |
| return projectPointsHomography; |
| case AFFINE: |
| return projectPointsAffine; |
| case ROTZOOM: |
| return projectPointsRotZoom; |
| case TRANSLATION: |
| return projectPointsTranslation; |
| default: |
| assert(0); |
| return NULL; |
| } |
| } |
| |
| static void projectPointsTranslation(int *mat, int *points, int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y) { |
| int i; |
| for (i = 0; i < n; ++i) { |
| const int x = *(points++), y = *(points++); |
| if (subsampling_x) |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| ((x << (WARPEDMODEL_PREC_BITS + 1)) + mat[0]), |
| WARPEDPIXEL_PREC_BITS + 1); |
| else |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| ((x << WARPEDMODEL_PREC_BITS)) + mat[0], |
| WARPEDPIXEL_PREC_BITS); |
| if (subsampling_y) |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| ((y << (WARPEDMODEL_PREC_BITS + 1)) + mat[1]), |
| WARPEDPIXEL_PREC_BITS + 1); |
| else |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| ((y << WARPEDMODEL_PREC_BITS)) + mat[1], |
| WARPEDPIXEL_PREC_BITS); |
| points += stride_points - 2; |
| proj += stride_proj - 2; |
| } |
| } |
| |
| void projectPointsRotZoom(int *mat, int *points, int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y) { |
| int i; |
| for (i = 0; i < n; ++i) { |
| const int x = *(points++), y = *(points++); |
| if (subsampling_x) |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| mat[0] * 2 * x + mat[1] * 2 * y + mat[2] + |
| (mat[0] + mat[1] - (1 << WARPEDMODEL_PREC_BITS)) / 2, |
| WARPEDDIFF_PREC_BITS + 1); |
| else |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED(mat[0] * x + mat[1] * y + mat[2], |
| WARPEDDIFF_PREC_BITS); |
| if (subsampling_y) |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| -mat[1] * 2 * x + mat[0] * 2 * y + mat[3] + |
| (-mat[1] + mat[0] - (1 << WARPEDMODEL_PREC_BITS)) / 2, |
| WARPEDDIFF_PREC_BITS + 1); |
| else |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED(-mat[1] * x + mat[0] * y + mat[3], |
| WARPEDDIFF_PREC_BITS); |
| points += stride_points - 2; |
| proj += stride_proj - 2; |
| } |
| } |
| |
| static void projectPointsAffine(int *mat, int *points, int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y) { |
| int i; |
| for (i = 0; i < n; ++i) { |
| const int x = *(points++), y = *(points++); |
| if (subsampling_x) |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| mat[0] * 2 * x + mat[1] * 2 * y + mat[4] + |
| (mat[0] + mat[1] - (1 << WARPEDMODEL_PREC_BITS)) / 2, |
| WARPEDDIFF_PREC_BITS + 1); |
| else |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED(mat[0] * x + mat[1] * y + mat[4], |
| WARPEDDIFF_PREC_BITS); |
| if (subsampling_y) |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED( |
| mat[2] * 2 * x + mat[3] * 2 * y + mat[5] + |
| (mat[2] + mat[3] - (1 << WARPEDMODEL_PREC_BITS)) / 2, |
| WARPEDDIFF_PREC_BITS + 1); |
| else |
| *(proj++) = ROUND_POWER_OF_TWO_SIGNED(mat[2] * x + mat[3] * y + mat[5], |
| WARPEDDIFF_PREC_BITS); |
| points += stride_points - 2; |
| proj += stride_proj - 2; |
| } |
| } |
| |
| static void projectPointsHomography(int *mat, int *points, int *proj, |
| const int n, |
| const int stride_points, |
| const int stride_proj, |
| const int subsampling_x, |
| const int subsampling_y) { |
| int i; |
| int64_t x, y, Z; |
| int64_t xp, yp; |
| for (i = 0; i < n; ++i) { |
| x = *(points++), y = *(points++); |
| x = (subsampling_x ? 4 * x + 1 : 2 * x); |
| y = (subsampling_y ? 4 * y + 1 : 2 * y); |
| |
| Z = (mat[6] * x + mat[7] * y + (1 << (WARPEDMODEL_ROW3HOMO_PREC_BITS + 1))); |
| xp = (mat[0] * x + mat[1] * y + 2 * mat[2]) |
| << (WARPEDPIXEL_PREC_BITS + |
| WARPEDMODEL_ROW3HOMO_PREC_BITS - WARPEDMODEL_PREC_BITS); |
| yp = (mat[3] * x + mat[4] * y + 2 * mat[5]) |
| << (WARPEDPIXEL_PREC_BITS + |
| WARPEDMODEL_ROW3HOMO_PREC_BITS - WARPEDMODEL_PREC_BITS); |
| |
| xp = xp > 0 ? (xp + Z / 2) / Z : (xp - Z / 2) / Z; |
| yp = yp > 0 ? (yp + Z / 2) / Z : (yp - Z / 2) / Z; |
| |
| if (subsampling_x) |
| xp = (xp - (1 << (WARPEDPIXEL_PREC_BITS - 1))) / 2; |
| if (subsampling_y) |
| yp = (yp - (1 << (WARPEDPIXEL_PREC_BITS - 1))) / 2; |
| *(proj++) = xp; |
| *(proj++) = yp; |
| |
| points += stride_points - 2; |
| proj += stride_proj - 2; |
| } |
| } |
| |
| static const int16_t |
| filter_4tap[WARPEDPIXEL_PREC_SHIFTS][4] = { |
| {0, 128, 0, 0}, |
| {-1, 127, 2, 0}, |
| {-2, 127, 4, -1}, |
| {-3, 126, 6, -1}, |
| {-3, 125, 8, -2}, |
| {-4, 124, 11, -3}, |
| {-5, 123, 13, -3}, |
| {-5, 121, 15, -3}, |
| {-6, 120, 18, -4}, |
| {-7, 119, 20, -4}, |
| {-7, 118, 22, -5}, |
| {-8, 116, 25, -5}, |
| {-8, 115, 27, -6}, |
| {-9, 113, 30, -6}, |
| {-9, 112, 32, -7}, |
| {-9, 110, 34, -7}, |
| {-10, 108, 37, -7}, |
| {-10, 107, 39, -8}, |
| {-10, 105, 41, -8}, |
| {-11, 103, 44, -8}, |
| {-11, 101, 47, -9}, |
| {-11, 99, 49, -9}, |
| {-11, 97, 51, -9}, |
| {-11, 95, 54, -10}, |
| {-11, 93, 56, -10}, |
| {-12, 91, 59, -10}, |
| {-12, 89, 61, -10}, |
| {-12, 87, 64, -11}, |
| {-12, 85, 66, -11}, |
| {-12, 82, 69, -11}, |
| {-12, 80, 71, -11}, |
| {-12, 78, 73, -11}, |
| {-11, 75, 75, -11}, |
| {-11, 73, 78, -12}, |
| {-11, 71, 80, -12}, |
| {-11, 69, 82, -12}, |
| {-11, 66, 85, -12}, |
| {-11, 64, 87, -12}, |
| {-10, 61, 89, -12}, |
| {-10, 59, 91, -12}, |
| {-10, 56, 93, -11}, |
| {-10, 54, 95, -11}, |
| {-9, 51, 97, -11}, |
| {-9, 49, 99, -11}, |
| {-9, 47, 101, -11}, |
| {-8, 44, 103, -11}, |
| {-8, 41, 105, -10}, |
| {-8, 39, 107, -10}, |
| {-7, 37, 108, -10}, |
| {-7, 34, 110, -9}, |
| {-7, 32, 112, -9}, |
| {-6, 30, 113, -9}, |
| {-6, 27, 115, -8}, |
| {-5, 25, 116, -8}, |
| {-5, 22, 118, -7}, |
| {-4, 20, 119, -7}, |
| {-4, 18, 120, -6}, |
| {-3, 15, 121, -5}, |
| {-3, 13, 123, -5}, |
| {-3, 11, 124, -4}, |
| {-2, 8, 125, -3}, |
| {-1, 6, 126, -3}, |
| {-1, 4, 127, -2}, |
| {0, 2, 127, -1}, |
| }; |
| |
| static const int16_t |
| filter_ntap[WARPEDPIXEL_PREC_SHIFTS][WARPEDPIXEL_FILTER_TAPS] = { |
| {0, 0, 128, 0, 0, 0}, |
| {0, -1, 128, 2, -1, 0}, |
| {1, -3, 127, 4, -1, 0}, |
| {1, -4, 126, 6, -2, 1}, |
| {1, -5, 126, 8, -3, 1}, |
| {1, -6, 125, 11, -4, 1}, |
| {1, -7, 124, 13, -4, 1}, |
| {2, -8, 123, 15, -5, 1}, |
| {2, -9, 122, 18, -6, 1}, |
| {2, -10, 121, 20, -6, 1}, |
| {2, -11, 120, 22, -7, 2}, |
| {2, -12, 119, 25, -8, 2}, |
| {3, -13, 117, 27, -8, 2}, |
| {3, -13, 116, 29, -9, 2}, |
| {3, -14, 114, 32, -10, 3}, |
| {3, -15, 113, 35, -10, 2}, |
| {3, -15, 111, 37, -11, 3}, |
| {3, -16, 109, 40, -11, 3}, |
| {3, -16, 108, 42, -12, 3}, |
| {4, -17, 106, 45, -13, 3}, |
| {4, -17, 104, 47, -13, 3}, |
| {4, -17, 102, 50, -14, 3}, |
| {4, -17, 100, 52, -14, 3}, |
| {4, -18, 98, 55, -15, 4}, |
| {4, -18, 96, 58, -15, 3}, |
| {4, -18, 94, 60, -16, 4}, |
| {4, -18, 91, 63, -16, 4}, |
| {4, -18, 89, 65, -16, 4}, |
| {4, -18, 87, 68, -17, 4}, |
| {4, -18, 85, 70, -17, 4}, |
| {4, -18, 82, 73, -17, 4}, |
| {4, -18, 80, 75, -17, 4}, |
| {4, -18, 78, 78, -18, 4}, |
| {4, -17, 75, 80, -18, 4}, |
| {4, -17, 73, 82, -18, 4}, |
| {4, -17, 70, 85, -18, 4}, |
| {4, -17, 68, 87, -18, 4}, |
| {4, -16, 65, 89, -18, 4}, |
| {4, -16, 63, 91, -18, 4}, |
| {4, -16, 60, 94, -18, 4}, |
| {3, -15, 58, 96, -18, 4}, |
| {4, -15, 55, 98, -18, 4}, |
| {3, -14, 52, 100, -17, 4}, |
| {3, -14, 50, 102, -17, 4}, |
| {3, -13, 47, 104, -17, 4}, |
| {3, -13, 45, 106, -17, 4}, |
| {3, -12, 42, 108, -16, 3}, |
| {3, -11, 40, 109, -16, 3}, |
| {3, -11, 37, 111, -15, 3}, |
| {2, -10, 35, 113, -15, 3}, |
| {3, -10, 32, 114, -14, 3}, |
| {2, -9, 29, 116, -13, 3}, |
| {2, -8, 27, 117, -13, 3}, |
| {2, -8, 25, 119, -12, 2}, |
| {2, -7, 22, 120, -11, 2}, |
| {1, -6, 20, 121, -10, 2}, |
| {1, -6, 18, 122, -9, 2}, |
| {1, -5, 15, 123, -8, 2}, |
| {1, -4, 13, 124, -7, 1}, |
| {1, -4, 11, 125, -6, 1}, |
| {1, -3, 8, 126, -5, 1}, |
| {1, -2, 6, 126, -4, 1}, |
| {0, -1, 4, 127, -3, 1}, |
| {0, -1, 2, 128, -1, 0}, |
| }; |
| |
| static int32_t do_ntap_filter(int32_t *p, int x) { |
| int i; |
| int32_t sum = 0; |
| for (i = 0; i < WARPEDPIXEL_FILTER_TAPS; ++i) { |
| sum += p[i - WARPEDPIXEL_FILTER_TAPS / 2 + 1] * filter_ntap[x][i]; |
| } |
| return sum; |
| } |
| |
| static int32_t do_cubic_filter(int32_t *p, int x) { |
| if (x == 0) { |
| return p[0]; |
| } else if (x == (1 << WARPEDPIXEL_PREC_BITS)) { |
| return p[1]; |
| } else { |
| const int64_t v1 = x * x * x * (3 * (p[0] - p[1]) + p[2] - p[-1]); |
| const int64_t v2 = x * x * (2 * p[-1] - 5 * p[0] + 4 * p[1] - p[2]); |
| const int64_t v3 = x * (p[1] - p[-1]); |
| const int64_t v4 = 2 * p[0]; |
| return (int32_t)ROUND_POWER_OF_TWO_SIGNED( |
| (v4 << (3 * WARPEDPIXEL_PREC_BITS)) + |
| (v3 << (2 * WARPEDPIXEL_PREC_BITS)) + |
| (v2 << WARPEDPIXEL_PREC_BITS) + v1, |
| 3 * WARPEDPIXEL_PREC_BITS + 1 - WARPEDPIXEL_FILTER_BITS); |
| } |
| } |
| |
| /* |
| static int32_t do_linear_filter(int32_t *p, int x) { |
| int32_t sum = 0; |
| sum = p[0] * (WARPEDPIXEL_PREC_SHIFTS - x) + p[1] * x; |
| sum <<= (WARPEDPIXEL_FILTER_BITS - WARPEDPIXEL_PREC_BITS); |
| return sum; |
| } |
| |
| static int32_t do_4tap_filter(int32_t *p, int x) { |
| int i; |
| int32_t sum = 0; |
| for (i = 0; i < 4; ++i) { |
| sum += p[i - 1] * filter_4tap[x][i]; |
| } |
| return sum; |
| } |
| */ |
| |
| static INLINE void get_subcolumn(int taps, uint8_t *ref, int32_t *col, |
| int stride, int x, int y_start) { |
| int i; |
| for (i = 0; i < taps; ++i) { |
| col[i] = ref[(i + y_start) * stride + x]; |
| } |
| } |
| |
| static uint8_t bi_ntap_filter(uint8_t *ref, int x, int y, int stride) { |
| int32_t val, arr[WARPEDPIXEL_FILTER_TAPS]; |
| int k; |
| int i = (int) x >> WARPEDPIXEL_PREC_BITS; |
| int j = (int) y >> WARPEDPIXEL_PREC_BITS; |
| for (k = 0; k < WARPEDPIXEL_FILTER_TAPS; ++k) { |
| int32_t arr_temp[WARPEDPIXEL_FILTER_TAPS]; |
| get_subcolumn(WARPEDPIXEL_FILTER_TAPS, ref, arr_temp, stride, |
| i + k + 1 - WARPEDPIXEL_FILTER_TAPS / 2, |
| j + 1 - WARPEDPIXEL_FILTER_TAPS / 2); |
| arr[k] = do_ntap_filter(arr_temp + WARPEDPIXEL_FILTER_TAPS / 2 - 1, |
| y - (j << WARPEDPIXEL_PREC_BITS)); |
| } |
| val = do_ntap_filter(arr + WARPEDPIXEL_FILTER_TAPS / 2 - 1, |
| x - (i << WARPEDPIXEL_PREC_BITS)); |
| val = ROUND_POWER_OF_TWO_SIGNED(val, WARPEDPIXEL_FILTER_BITS * 2); |
| return (uint8_t)clip_pixel(val); |
| } |
| |
| static uint8_t bi_cubic_filter(uint8_t *ref, int x, int y, int stride) { |
| int32_t val, arr[4]; |
| int k; |
| int i = (int) x >> WARPEDPIXEL_PREC_BITS; |
| int j = (int) y >> WARPEDPIXEL_PREC_BITS; |
| for (k = 0; k < 4; ++k) { |
| int32_t arr_temp[4]; |
| get_subcolumn(4, ref, arr_temp, stride, |
| i + k - 1, j - 1); |
| arr[k] = do_cubic_filter(arr_temp + 1, y - (j << WARPEDPIXEL_PREC_BITS)); |
| } |
| val = do_cubic_filter(arr + 1, x - (i << WARPEDPIXEL_PREC_BITS)); |
| val = ROUND_POWER_OF_TWO_SIGNED(val, WARPEDPIXEL_FILTER_BITS * 2); |
| return (uint8_t)clip_pixel(val); |
| } |
| |
| static uint8_t bi_linear_filter(uint8_t *ref, int x, int y, int stride) { |
| const int ix = x >> WARPEDPIXEL_PREC_BITS; |
| const int iy = y >> WARPEDPIXEL_PREC_BITS; |
| const int sx = x - (ix << WARPEDPIXEL_PREC_BITS); |
| const int sy = y - (iy << WARPEDPIXEL_PREC_BITS); |
| int32_t val; |
| val = ROUND_POWER_OF_TWO_SIGNED( |
| ref[iy * stride + ix] * (WARPEDPIXEL_PREC_SHIFTS - sy) * |
| (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[iy * stride + ix + 1] * (WARPEDPIXEL_PREC_SHIFTS - sy) * sx + |
| ref[(iy + 1) * stride + ix] * sy * (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[(iy + 1) * stride + ix + 1] * sy * sx, |
| WARPEDPIXEL_PREC_BITS * 2); |
| return (uint8_t)clip_pixel(val); |
| } |
| |
| static uint8_t warp_interpolate(uint8_t *ref, int x, int y, |
| int width, int height, int stride) { |
| int ix = x >> WARPEDPIXEL_PREC_BITS; |
| int iy = y >> WARPEDPIXEL_PREC_BITS; |
| int sx = x - (ix << WARPEDPIXEL_PREC_BITS); |
| int sy = y - (iy << WARPEDPIXEL_PREC_BITS); |
| int32_t v; |
| |
| if (ix < 0 && iy < 0) return ref[0]; |
| else if (ix < 0 && iy > height - 1) |
| return ref[(height - 1) * stride]; |
| else if (ix > width - 1 && iy < 0) |
| return ref[width - 1]; |
| else if (ix > width - 1 && iy > height - 1) |
| return ref[(height - 1) * stride + (width - 1)]; |
| else if (ix < 0) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[iy * stride] * (WARPEDPIXEL_PREC_SHIFTS - sy) + |
| ref[(iy + 1) * stride] * sy, |
| WARPEDPIXEL_PREC_BITS); |
| return clip_pixel(v); |
| } else if (iy < 0) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[ix] * (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[ix + 1] * sx, |
| WARPEDPIXEL_PREC_BITS); |
| return clip_pixel(v); |
| } else if (ix > width - 1) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[iy * stride + width - 1] * (WARPEDPIXEL_PREC_SHIFTS - sy) + |
| ref[(iy + 1) * stride + width - 1] * sy, |
| WARPEDPIXEL_PREC_BITS); |
| return clip_pixel(v); |
| } else if (iy > height - 1) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[(height - 1) * stride + ix] * (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[(height - 1) * stride + ix + 1] * sx, |
| WARPEDPIXEL_PREC_BITS); |
| return clip_pixel(v); |
| } else if (ix >= WARPEDPIXEL_FILTER_TAPS / 2 - 1 && |
| iy >= WARPEDPIXEL_FILTER_TAPS / 2 - 1 && |
| ix < width - WARPEDPIXEL_FILTER_TAPS / 2 && |
| iy < height - WARPEDPIXEL_FILTER_TAPS / 2) { |
| return bi_ntap_filter(ref, x, y, stride); |
| } else if (ix >= 1 && iy >= 1 && |
| ix < width - 2 && iy < height - 2) { |
| return bi_cubic_filter(ref, x, y, stride); |
| } else { |
| return bi_linear_filter(ref, x, y, stride); |
| } |
| } |
| |
| void vp10_warp_plane(WarpedMotionParams *wm, |
| uint8_t *ref, |
| int width, int height, int stride, |
| uint8_t *pred, |
| int p_col, int p_row, |
| int p_width, int p_height, int p_stride, |
| int subsampling_x, int subsampling_y, |
| int x_scale, int y_scale) { |
| int i, j; |
| projectPointsType projectPoints = get_projectPointsType(wm->wmtype); |
| if (projectPoints == NULL) |
| return; |
| for (i = p_row; i < p_row + p_height; ++i) { |
| for (j = p_col; j < p_col + p_width; ++j) { |
| int in[2], out[2]; |
| projectPoints(wm->wmmat, in, out, 1, 2, 2, subsampling_x, subsampling_y); |
| out[0] = ROUND_POWER_OF_TWO_SIGNED(out[0] * x_scale, 4); |
| out[1] = ROUND_POWER_OF_TWO_SIGNED(out[1] * y_scale, 4); |
| pred[(j - p_col) + (i - p_row) * p_stride] = |
| warp_interpolate(ref, out[0], out[1], width, height, stride); |
| } |
| } |
| } |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| static INLINE void highbd_get_subcolumn(int taps, uint16_t *ref, int32_t *col, |
| int stride, int x, int y_start) { |
| int i; |
| for (i = 0; i < taps; ++i) { |
| col[i] = ref[(i + y_start) * stride + x]; |
| } |
| } |
| |
| static uint16_t highbd_bi_ntap_filter(uint16_t *ref, |
| int x, int y, int stride, |
| int bd) { |
| int32_t val, arr[WARPEDPIXEL_FILTER_TAPS]; |
| int k; |
| int i = (int) x >> WARPEDPIXEL_PREC_BITS; |
| int j = (int) y >> WARPEDPIXEL_PREC_BITS; |
| for (k = 0; k < WARPEDPIXEL_FILTER_TAPS; ++k) { |
| int32_t arr_temp[WARPEDPIXEL_FILTER_TAPS]; |
| highbd_get_subcolumn(WARPEDPIXEL_FILTER_TAPS, ref, arr_temp, stride, |
| i + k + 1 - WARPEDPIXEL_FILTER_TAPS / 2, |
| j + 1 - WARPEDPIXEL_FILTER_TAPS / 2); |
| arr[k] = do_ntap_filter(arr_temp + WARPEDPIXEL_FILTER_TAPS / 2 - 1, |
| y - (j << WARPEDPIXEL_PREC_BITS)); |
| } |
| val = do_ntap_filter(arr + WARPEDPIXEL_FILTER_TAPS / 2 - 1, |
| x - (i << WARPEDPIXEL_PREC_BITS)); |
| val = ROUND_POWER_OF_TWO_SIGNED(val, WARPEDPIXEL_FILTER_BITS * 2); |
| return (uint16_t)highbd_clip_pixel(val, bd); |
| } |
| |
| static uint16_t highbd_bi_cubic_filter(uint16_t *ref, |
| int x, int y, int stride, |
| int bd) { |
| int32_t val, arr[4]; |
| int k; |
| int i = (int) x >> WARPEDPIXEL_PREC_BITS; |
| int j = (int) y >> WARPEDPIXEL_PREC_BITS; |
| for (k = 0; k < 4; ++k) { |
| int32_t arr_temp[4]; |
| highbd_get_subcolumn(4, ref, arr_temp, stride, |
| i + k - 1, j - 1); |
| arr[k] = do_cubic_filter(arr_temp + 1, y - (j << WARPEDPIXEL_PREC_BITS)); |
| } |
| val = do_cubic_filter(arr + 1, x - (i << WARPEDPIXEL_PREC_BITS)); |
| val = ROUND_POWER_OF_TWO_SIGNED(val, WARPEDPIXEL_FILTER_BITS * 2); |
| return (uint16_t)highbd_clip_pixel(val, bd); |
| } |
| |
| static uint16_t highbd_bi_linear_filter(uint16_t *ref, |
| int x, int y, int stride, |
| int bd) { |
| const int ix = x >> WARPEDPIXEL_PREC_BITS; |
| const int iy = y >> WARPEDPIXEL_PREC_BITS; |
| const int sx = x - (ix << WARPEDPIXEL_PREC_BITS); |
| const int sy = y - (iy << WARPEDPIXEL_PREC_BITS); |
| int32_t val; |
| val = ROUND_POWER_OF_TWO_SIGNED( |
| ref[iy * stride + ix] * (WARPEDPIXEL_PREC_SHIFTS - sy) * |
| (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[iy * stride + ix + 1] * (WARPEDPIXEL_PREC_SHIFTS - sy) * sx + |
| ref[(iy + 1) * stride + ix] * sy * (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[(iy + 1) * stride + ix + 1] * sy * sx, |
| WARPEDPIXEL_PREC_BITS * 2); |
| return (uint16_t)highbd_clip_pixel(val, bd); |
| } |
| |
| static uint16_t highbd_warp_interpolate(uint16_t *ref, |
| int x, int y, |
| int width, int height, int stride, |
| int bd) { |
| int ix = x >> WARPEDPIXEL_PREC_BITS; |
| int iy = y >> WARPEDPIXEL_PREC_BITS; |
| int sx = x - (ix << WARPEDPIXEL_PREC_BITS); |
| int sy = y - (iy << WARPEDPIXEL_PREC_BITS); |
| int32_t v; |
| |
| if (ix < 0 && iy < 0) return ref[0]; |
| else if (ix < 0 && iy > height - 1) |
| return ref[(height - 1) * stride]; |
| else if (ix > width - 1 && iy < 0) |
| return ref[width - 1]; |
| else if (ix > width - 1 && iy > height - 1) |
| return ref[(height - 1) * stride + (width - 1)]; |
| else if (ix < 0) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[iy * stride] * (WARPEDPIXEL_PREC_SHIFTS - sy) + |
| ref[(iy + 1) * stride] * sy, |
| WARPEDPIXEL_PREC_BITS); |
| return highbd_clip_pixel(v, bd); |
| } else if (iy < 0) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[ix] * (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[ix + 1] * sx, |
| WARPEDPIXEL_PREC_BITS); |
| return highbd_clip_pixel(v, bd); |
| } else if (ix > width - 1) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[iy * stride + width - 1] * (WARPEDPIXEL_PREC_SHIFTS - sy) + |
| ref[(iy + 1) * stride + width - 1] * sy, |
| WARPEDPIXEL_PREC_BITS); |
| return highbd_clip_pixel(v, bd); |
| } else if (iy > height - 1) { |
| v = ROUND_POWER_OF_TWO_SIGNED( |
| ref[(height - 1) * stride + ix] * (WARPEDPIXEL_PREC_SHIFTS - sx) + |
| ref[(height - 1) * stride + ix + 1] * sx, |
| WARPEDPIXEL_PREC_BITS); |
| return highbd_clip_pixel(v, bd); |
| } else if (ix >= WARPEDPIXEL_FILTER_TAPS / 2 - 1 && |
| iy >= WARPEDPIXEL_FILTER_TAPS / 2 - 1 && |
| ix < width - WARPEDPIXEL_FILTER_TAPS / 2 && |
| iy < height - WARPEDPIXEL_FILTER_TAPS / 2) { |
| return highbd_bi_ntap_filter(ref, x, y, stride, bd); |
| } else if (ix >= 1 && iy >= 1 && |
| ix < width - 2 && iy < height - 2) { |
| return highbd_bi_cubic_filter(ref, x, y, stride, bd); |
| } else { |
| return highbd_bi_linear_filter(ref, x, y, stride, bd); |
| } |
| } |
| |
| void vp10_highbd_warp_plane(WarpedMotionParams *wm, |
| uint8_t *ref8, |
| int width, int height, int stride, |
| uint8_t *pred8, |
| int p_col, int p_row, |
| int p_width, int p_height, int p_stride, |
| int subsampling_col, int subsampling_row, |
| int x_scale, int y_scale, |
| int bd) { |
| int i, j; |
| projectPointsType projectPoints = get_projectPointsType(wm->wmtype); |
| uint16_t *pred = CONVERT_TO_SHORTPTR(pred8); |
| uint16_t *ref = CONVERT_TO_SHORTPTR(ref8); |
| if (projectPoints == NULL) |
| return; |
| for (i = p_row; i < p_row + p_height; ++i) { |
| for (j = p_col; j < p_col + p_width; ++j) { |
| int in[2], out[2]; |
| projectPoints(wm->wmmat, in, out, 1, 2, 2, subsampling_x, subsampling_y); |
| out[0] = ROUND_POWER_OF_TWO_SIGNED(out[0] * x_scale, 4); |
| out[1] = ROUND_POWER_OF_TWO_SIGNED(out[1] * y_scale, 4); |
| pred[(j - p_col) + (i - p_row) * p_stride] = |
| highbd_warp_interpolate( |
| ref, out[0], out[1], width, height, stride, bd); |
| } |
| } |
| } |
| #endif // CONFIG_VP9_HIGHBITDEPTH |
| |
| void vp10_integerize_model(double *H, TransformationType wmtype, |
| WarpedMotionParams *wm) { |
| wm->wmtype = wmtype; |
| switch (wmtype) { |
| case HOMOGRAPHY: |
| assert(fabs(H[8] - 1.0) < 1e-12); |
| wm->wmmat[7] = rint(H[7] * (1 << WARPEDMODEL_ROW3HOMO_PREC_BITS)); |
| wm->wmmat[6] = rint(H[6] * (1 << WARPEDMODEL_ROW3HOMO_PREC_BITS)); |
| case AFFINE: |
| wm->wmmat[5] = rint(H[5] * (1 << WARPEDMODEL_PREC_BITS)); |
| wm->wmmat[4] = rint(H[4] * (1 << WARPEDMODEL_PREC_BITS)); |
| case ROTZOOM: |
| wm->wmmat[3] = rint(H[3] * (1 << WARPEDMODEL_PREC_BITS)); |
| wm->wmmat[2] = rint(H[2] * (1 << WARPEDMODEL_PREC_BITS)); |
| case TRANSLATION: |
| wm->wmmat[1] = rint(H[1] * (1 << WARPEDMODEL_PREC_BITS)); |
| wm->wmmat[0] = rint(H[0] * (1 << WARPEDMODEL_PREC_BITS)); |
| break; |
| default: |
| assert(0); |
| }; |
| return; |
| } |
