Warped motion functions added
Change-Id: I5064ef1421e17c3ecafe70e7ff1fc7db0c16cc8f
This commit is contained in:
Debargha Mukherjee
Родитель
93921097a6
Коммит
faf3c2cd38
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@ -0,0 +1,664 @@
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/*
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* Copyright (c) 2015 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
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* found 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 <stdio.h>
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#include <stdlib.h>
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#include <memory.h>
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#include <math.h>
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#include <assert.h>
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#include "vp10/common/warped_motion.h"
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typedef void (*projectPointsType)(int *mat,
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int *points,
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int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y);
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static void projectPointsHomography(int *mat,
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int *points,
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int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y);
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static void projectPointsAffine(int *mat,
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int *points,
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int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y);
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static void projectPointsRotZoom(int *mat,
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int *points,
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int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y);
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static void projectPointsTranslation(int *mat,
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int *points,
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int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y);
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static projectPointsType get_projectPointsType(TransformationType type) {
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switch (type) {
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case HOMOGRAPHY:
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return projectPointsHomography;
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case AFFINE:
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return projectPointsAffine;
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case ROTZOOM:
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return projectPointsRotZoom;
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case TRANSLATION:
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return projectPointsTranslation;
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default:
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assert(0);
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return NULL;
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}
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}
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static void projectPointsTranslation(int *mat, int *points, int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y) {
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int i;
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for (i = 0; i < n; ++i) {
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const int x = *(points++), y = *(points++);
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if (subsampling_x)
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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((x << (WARPEDMODEL_PREC_BITS + 1)) + mat[0]),
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WARPEDPIXEL_PREC_BITS + 1);
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else
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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((x << WARPEDMODEL_PREC_BITS)) + mat[0],
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WARPEDPIXEL_PREC_BITS);
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if (subsampling_y)
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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((y << (WARPEDMODEL_PREC_BITS + 1)) + mat[1]),
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WARPEDPIXEL_PREC_BITS + 1);
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else
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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((y << WARPEDMODEL_PREC_BITS)) + mat[1],
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WARPEDPIXEL_PREC_BITS);
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points += stride_points - 2;
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proj += stride_proj - 2;
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}
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}
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void projectPointsRotZoom(int *mat, int *points, int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y) {
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int i;
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for (i = 0; i < n; ++i) {
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const int x = *(points++), y = *(points++);
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if (subsampling_x)
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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mat[0] * 2 * x + mat[1] * 2 * y + mat[2] +
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(mat[0] + mat[1] - (1 << WARPEDMODEL_PREC_BITS)) / 2,
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WARPEDDIFF_PREC_BITS + 1);
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else
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(mat[0] * x + mat[1] * y + mat[2],
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WARPEDDIFF_PREC_BITS);
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if (subsampling_y)
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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-mat[1] * 2 * x + mat[0] * 2 * y + mat[3] +
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(-mat[1] + mat[0] - (1 << WARPEDMODEL_PREC_BITS)) / 2,
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WARPEDDIFF_PREC_BITS + 1);
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else
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(-mat[1] * x + mat[0] * y + mat[3],
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WARPEDDIFF_PREC_BITS);
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points += stride_points - 2;
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proj += stride_proj - 2;
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}
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}
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static void projectPointsAffine(int *mat, int *points, int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y) {
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int i;
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for (i = 0; i < n; ++i) {
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const int x = *(points++), y = *(points++);
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if (subsampling_x)
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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mat[0] * 2 * x + mat[1] * 2 * y + mat[4] +
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(mat[0] + mat[1] - (1 << WARPEDMODEL_PREC_BITS)) / 2,
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WARPEDDIFF_PREC_BITS + 1);
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else
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(mat[0] * x + mat[1] * y + mat[4],
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WARPEDDIFF_PREC_BITS);
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if (subsampling_y)
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(
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mat[2] * 2 * x + mat[3] * 2 * y + mat[5] +
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(mat[2] + mat[3] - (1 << WARPEDMODEL_PREC_BITS)) / 2,
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WARPEDDIFF_PREC_BITS + 1);
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else
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*(proj++) = ROUNDZ_POWER_OF_TWO_SIGNED(mat[2] * x + mat[3] * y + mat[5],
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WARPEDDIFF_PREC_BITS);
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points += stride_points - 2;
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proj += stride_proj - 2;
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}
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}
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static void projectPointsHomography(int *mat, int *points, int *proj,
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const int n,
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const int stride_points,
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const int stride_proj,
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const int subsampling_x,
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const int subsampling_y) {
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int i;
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int x, y, Z;
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int xp, yp;
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for (i = 0; i < n; ++i) {
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x = *(points++), y = *(points++);
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x = (subsampling_x ? 4 * x + 1 : 2 * x);
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y = (subsampling_y ? 4 * y + 1 : 2 * y);
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Z = (mat[6] * x + mat[7] * y + mat[8] * 2);
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xp = (mat[0] * x + mat[1] * y + 2 * mat[2]) << WARPEDPIXEL_PREC_BITS;
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yp = (mat[3] * x + mat[4] * y + 2 * mat[5]) << WARPEDPIXEL_PREC_BITS;
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xp = xp > 0 ? (xp + Z / 2) / Z : (xp - Z / 2) / Z;
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yp = yp > 0 ? (yp + Z / 2) / Z : (yp - Z / 2) / Z;
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if (subsampling_x)
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xp = (xp - (1 << (WARPEDPIXEL_PREC_BITS - 1))) / 2;
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if (subsampling_y)
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yp = (yp - (1 << (WARPEDPIXEL_PREC_BITS - 1))) / 2;
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*(proj++) = xp;
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*(proj++) = yp;
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points += stride_points - 2;
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proj += stride_proj - 2;
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}
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}
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static const int16_t
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filter_4tap[WARPEDPIXEL_PREC_SHIFTS][4] = {
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{0, 128, 0, 0},
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{-1, 127, 2, 0},
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{-2, 127, 4, -1},
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{-3, 126, 6, -1},
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{-3, 125, 8, -2},
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{-4, 124, 11, -3},
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{-5, 123, 13, -3},
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{-5, 121, 15, -3},
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{-6, 120, 18, -4},
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{-7, 119, 20, -4},
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{-7, 118, 22, -5},
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{-8, 116, 25, -5},
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{-8, 115, 27, -6},
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{-9, 113, 30, -6},
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{-9, 112, 32, -7},
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{-9, 110, 34, -7},
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{-10, 108, 37, -7},
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{-10, 107, 39, -8},
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{-10, 105, 41, -8},
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{-11, 103, 44, -8},
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{-11, 101, 47, -9},
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{-11, 99, 49, -9},
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{-11, 97, 51, -9},
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{-11, 95, 54, -10},
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{-11, 93, 56, -10},
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{-12, 91, 59, -10},
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{-12, 89, 61, -10},
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{-12, 87, 64, -11},
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{-12, 85, 66, -11},
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{-12, 82, 69, -11},
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{-12, 80, 71, -11},
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{-12, 78, 73, -11},
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{-11, 75, 75, -11},
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{-11, 73, 78, -12},
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{-11, 71, 80, -12},
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{-11, 69, 82, -12},
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{-11, 66, 85, -12},
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{-11, 64, 87, -12},
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{-10, 61, 89, -12},
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{-10, 59, 91, -12},
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{-10, 56, 93, -11},
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{-10, 54, 95, -11},
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{-9, 51, 97, -11},
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{-9, 49, 99, -11},
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{-9, 47, 101, -11},
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{-8, 44, 103, -11},
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{-8, 41, 105, -10},
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{-8, 39, 107, -10},
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{-7, 37, 108, -10},
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{-7, 34, 110, -9},
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{-7, 32, 112, -9},
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{-6, 30, 113, -9},
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{-6, 27, 115, -8},
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{-5, 25, 116, -8},
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{-5, 22, 118, -7},
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{-4, 20, 119, -7},
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{-4, 18, 120, -6},
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{-3, 15, 121, -5},
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{-3, 13, 123, -5},
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{-3, 11, 124, -4},
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{-2, 8, 125, -3},
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{-1, 6, 126, -3},
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{-1, 4, 127, -2},
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{0, 2, 127, -1},
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};
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static const int16_t
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filter_ntap[WARPEDPIXEL_PREC_SHIFTS][WARPEDPIXEL_FILTER_TAPS] = {
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{0, 0, 128, 0, 0, 0},
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{0, -1, 128, 2, -1, 0},
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{1, -3, 127, 4, -1, 0},
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{1, -4, 126, 6, -2, 1},
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{1, -5, 126, 8, -3, 1},
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{1, -6, 125, 11, -4, 1},
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{1, -7, 124, 13, -4, 1},
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{2, -8, 123, 15, -5, 1},
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{2, -9, 122, 18, -6, 1},
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{2, -10, 121, 20, -6, 1},
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{2, -11, 120, 22, -7, 2},
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{2, -12, 119, 25, -8, 2},
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{3, -13, 117, 27, -8, 2},
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{3, -13, 116, 29, -9, 2},
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{3, -14, 114, 32, -10, 3},
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{3, -15, 113, 35, -10, 2},
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{3, -15, 111, 37, -11, 3},
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{3, -16, 109, 40, -11, 3},
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{3, -16, 108, 42, -12, 3},
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{4, -17, 106, 45, -13, 3},
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{4, -17, 104, 47, -13, 3},
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{4, -17, 102, 50, -14, 3},
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{4, -17, 100, 52, -14, 3},
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{4, -18, 98, 55, -15, 4},
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{4, -18, 96, 58, -15, 3},
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{4, -18, 94, 60, -16, 4},
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{4, -18, 91, 63, -16, 4},
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{4, -18, 89, 65, -16, 4},
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{4, -18, 87, 68, -17, 4},
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{4, -18, 85, 70, -17, 4},
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{4, -18, 82, 73, -17, 4},
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{4, -18, 80, 75, -17, 4},
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{4, -18, 78, 78, -18, 4},
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{4, -17, 75, 80, -18, 4},
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{4, -17, 73, 82, -18, 4},
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{4, -17, 70, 85, -18, 4},
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{4, -17, 68, 87, -18, 4},
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{4, -16, 65, 89, -18, 4},
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{4, -16, 63, 91, -18, 4},
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{4, -16, 60, 94, -18, 4},
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{3, -15, 58, 96, -18, 4},
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{4, -15, 55, 98, -18, 4},
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{3, -14, 52, 100, -17, 4},
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{3, -14, 50, 102, -17, 4},
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{3, -13, 47, 104, -17, 4},
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{3, -13, 45, 106, -17, 4},
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{3, -12, 42, 108, -16, 3},
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{3, -11, 40, 109, -16, 3},
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{3, -11, 37, 111, -15, 3},
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{2, -10, 35, 113, -15, 3},
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{3, -10, 32, 114, -14, 3},
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{2, -9, 29, 116, -13, 3},
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{2, -8, 27, 117, -13, 3},
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{2, -8, 25, 119, -12, 2},
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{2, -7, 22, 120, -11, 2},
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{1, -6, 20, 121, -10, 2},
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{1, -6, 18, 122, -9, 2},
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{1, -5, 15, 123, -8, 2},
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{1, -4, 13, 124, -7, 1},
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{1, -4, 11, 125, -6, 1},
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{1, -3, 8, 126, -5, 1},
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{1, -2, 6, 126, -4, 1},
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{0, -1, 4, 127, -3, 1},
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{0, -1, 2, 128, -1, 0},
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};
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static int32_t do_ntap_filter(int32_t *p, int x) {
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int i;
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int32_t sum = 0;
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for (i = 0; i < WARPEDPIXEL_FILTER_TAPS; ++i) {
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sum += p[i - WARPEDPIXEL_FILTER_TAPS / 2 + 1] * filter_ntap[x][i];
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}
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return sum;
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}
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static int32_t do_cubic_filter(int32_t *p, int x) {
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if (x == 0) {
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return p[0];
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} else if (x == (1 << WARPEDPIXEL_PREC_BITS)) {
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return p[1];
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} else {
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const int64_t v1 = x * x * x * (3 * (p[0] - p[1]) + p[2] - p[-1]);
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const int64_t v2 = x * x * (2 * p[-1] - 5 * p[0] + 4 * p[1] - p[2]);
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const int64_t v3 = x * (p[1] - p[-1]);
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const int64_t v4 = 2 * p[0];
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return (int32_t)ROUNDZ_POWER_OF_TWO_SIGNED(
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(v4 << (3 * WARPEDPIXEL_PREC_BITS)) +
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(v3 << (2 * WARPEDPIXEL_PREC_BITS)) +
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(v2 << WARPEDPIXEL_PREC_BITS) + v1,
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3 * WARPEDPIXEL_PREC_BITS + 1 - WARPEDPIXEL_FILTER_BITS);
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}
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}
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/*
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static int32_t do_linear_filter(int32_t *p, int x) {
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int32_t sum = 0;
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sum = p[0] * (WARPEDPIXEL_PREC_SHIFTS - x) + p[1] * x;
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sum <<= (WARPEDPIXEL_FILTER_BITS - WARPEDPIXEL_PREC_BITS);
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return sum;
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}
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static int32_t do_4tap_filter(int32_t *p, int x) {
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int i;
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int32_t sum = 0;
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for (i = 0; i < 4; ++i) {
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sum += p[i - 1] * filter_4tap[x][i];
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}
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return sum;
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}
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*/
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static INLINE void get_subcolumn(int taps, uint8_t *ref, int32_t *col,
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int stride, int x, int y_start) {
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int i;
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for (i = 0; i < taps; ++i) {
|
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col[i] = ref[(i + y_start) * stride + x];
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}
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}
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|
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static uint8_t bi_ntap_filter(uint8_t *ref, int x, int y, int stride) {
|
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int32_t val, arr[WARPEDPIXEL_FILTER_TAPS];
|
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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];
|
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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
|
||||
|
|
@ -0,0 +1,71 @@
|
|||
/*
|
||||
* Copyright (c) 2016 The WebM project authors. All Rights Reserved.
|
||||
*
|
||||
* Use of this source code is governed by a BSD-style license
|
||||
* that can be found in the LICENSE file in the root of the source
|
||||
* tree. An additional intellectual property rights grant can be
|
||||
* found in the file PATENTS. All contributing project authors may
|
||||
* be found in the AUTHORS file in the root of the source tree.
|
||||
*/
|
||||
|
||||
#ifndef VP10_COMMON_WARPED_MOTION_H
|
||||
#define VP10_COMMON_WARPED_MOTION_H
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <memory.h>
|
||||
#include <math.h>
|
||||
#include <assert.h>
|
||||
|
||||
#include "./vpx_config.h"
|
||||
#include "vpx_ports/mem.h"
|
||||
#include "vpx_dsp/vpx_dsp_common.h"
|
||||
|
||||
// Bits of precision used for the model
|
||||
#define WARPEDMODEL_PREC_BITS 8
|
||||
|
||||
// Bits of subpel precision for warped interpolation
|
||||
#define WARPEDPIXEL_PREC_BITS 6
|
||||
#define WARPEDPIXEL_PREC_SHIFTS (1 << WARPEDPIXEL_PREC_BITS)
|
||||
|
||||
// Taps for ntap filter
|
||||
#define WARPEDPIXEL_FILTER_TAPS 6
|
||||
|
||||
// Precision of filter taps
|
||||
#define WARPEDPIXEL_FILTER_BITS 7
|
||||
|
||||
#define WARPEDDIFF_PREC_BITS (WARPEDMODEL_PREC_BITS - WARPEDPIXEL_PREC_BITS)
|
||||
|
||||
typedef enum {
|
||||
UNKNOWN_TRANSFORM = -1,
|
||||
HOMOGRAPHY, // homography, 8-parameter
|
||||
AFFINE, // affine, 6-parameter
|
||||
ROTZOOM, // simplified affine with rotation and zoom only, 4-parameter
|
||||
TRANSLATION // translational motion 2-parameter
|
||||
} TransformationType;
|
||||
|
||||
typedef struct {
|
||||
TransformationType wmtype;
|
||||
int wmmat[9];
|
||||
} WarpedMotionParams;
|
||||
|
||||
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_col, int subsampling_row,
|
||||
int x_scale, int y_scale);
|
||||
#if CONFIG_VP9_HIGHBITDEPTH
|
||||
void vp10_highbd_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_col, int subsampling_row,
|
||||
int x_scale, int y_scale,
|
||||
int bd);
|
||||
#endif // CONFIG_VP9_HIGHBITDEPTH
|
||||
#endif // VP10_COMMON_WARPED_MOTION_H
|
||||
|
|
@ -96,6 +96,8 @@ VP10_CX_SRCS-yes += encoder/temporal_filter.c
|
|||
VP10_CX_SRCS-yes += encoder/temporal_filter.h
|
||||
VP10_CX_SRCS-yes += encoder/mbgraph.c
|
||||
VP10_CX_SRCS-yes += encoder/mbgraph.h
|
||||
VP10_CX_SRCS-$(CONFIG_GLOBAL_MOTION) += common/warped_motion.h
|
||||
VP10_CX_SRCS-$(CONFIG_GLOBAL_MOTION) += common/warped_motion.c
|
||||
|
||||
VP10_CX_SRCS-$(HAVE_SSE2) += encoder/x86/temporal_filter_apply_sse2.asm
|
||||
VP10_CX_SRCS-$(HAVE_SSE2) += encoder/x86/quantize_sse2.c
|
||||
|
|
|
|||
|
|
@ -51,6 +51,11 @@
|
|||
(((value) < 0) ? -ROUND_POWER_OF_TWO(-(value), (n)) \
|
||||
: ROUND_POWER_OF_TWO((value), (n)))
|
||||
|
||||
/* Shift down with rounding for signed integers, for use when n >= 0 */
|
||||
#define ROUNDZ_POWER_OF_TWO_SIGNED(value, n) \
|
||||
(((value) < 0) ? -ROUNDZ_POWER_OF_TWO(-(value), (n)) \
|
||||
: ROUNDZ_POWER_OF_TWO((value), (n)))
|
||||
|
||||
#define ALIGN_POWER_OF_TWO(value, n) \
|
||||
(((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1))
|
||||
|
||||
|
|
|
|||
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