| /* |
| * 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. |
| */ |
| #include <stdlib.h> |
| #include "vpx/vpx_integer.h" |
| |
| const int16_t vpx_rv[] = {8, 5, 2, 2, 8, 12, 4, 9, 8, 3, 0, 3, 9, 0, 0, 0, 8, 3, |
| 14, 4, 10, 1, 11, 14, 1, 14, 9, 6, 12, 11, 8, 6, 10, 0, 0, 8, 9, 0, 3, 14, |
| 8, 11, 13, 4, 2, 9, 0, 3, 9, 6, 1, 2, 3, 14, 13, 1, 8, 2, 9, 7, 3, 3, 1, 13, |
| 13, 6, 6, 5, 2, 7, 11, 9, 11, 8, 7, 3, 2, 0, 13, 13, 14, 4, 12, 5, 12, 10, |
| 8, 10, 13, 10, 4, 14, 4, 10, 0, 8, 11, 1, 13, 7, 7, 14, 6, 14, 13, 2, 13, 5, |
| 4, 4, 0, 10, 0, 5, 13, 2, 12, 7, 11, 13, 8, 0, 4, 10, 7, 2, 7, 2, 2, 5, 3, |
| 4, 7, 3, 3, 14, 14, 5, 9, 13, 3, 14, 3, 6, 3, 0, 11, 8, 13, 1, 13, 1, 12, 0, |
| 10, 9, 7, 6, 2, 8, 5, 2, 13, 7, 1, 13, 14, 7, 6, 7, 9, 6, 10, 11, 7, 8, 7, |
| 5, 14, 8, 4, 4, 0, 8, 7, 10, 0, 8, 14, 11, 3, 12, 5, 7, 14, 3, 14, 5, 2, 6, |
| 11, 12, 12, 8, 0, 11, 13, 1, 2, 0, 5, 10, 14, 7, 8, 0, 4, 11, 0, 8, 0, 3, |
| 10, 5, 8, 0, 11, 6, 7, 8, 10, 7, 13, 9, 2, 5, 1, 5, 10, 2, 4, 3, 5, 6, 10, |
| 8, 9, 4, 11, 14, 0, 10, 0, 5, 13, 2, 12, 7, 11, 13, 8, 0, 4, 10, 7, 2, 7, 2, |
| 2, 5, 3, 4, 7, 3, 3, 14, 14, 5, 9, 13, 3, 14, 3, 6, 3, 0, 11, 8, 13, 1, 13, |
| 1, 12, 0, 10, 9, 7, 6, 2, 8, 5, 2, 13, 7, 1, 13, 14, 7, 6, 7, 9, 6, 10, 11, |
| 7, 8, 7, 5, 14, 8, 4, 4, 0, 8, 7, 10, 0, 8, 14, 11, 3, 12, 5, 7, 14, 3, 14, |
| 5, 2, 6, 11, 12, 12, 8, 0, 11, 13, 1, 2, 0, 5, 10, 14, 7, 8, 0, 4, 11, 0, 8, |
| 0, 3, 10, 5, 8, 0, 11, 6, 7, 8, 10, 7, 13, 9, 2, 5, 1, 5, 10, 2, 4, 3, 5, 6, |
| 10, 8, 9, 4, 11, 14, 3, 8, 3, 7, 8, 5, 11, 4, 12, 3, 11, 9, 14, 8, 14, 13, |
| 4, 3, 1, 2, 14, 6, 5, 4, 4, 11, 4, 6, 2, 1, 5, 8, 8, 12, 13, 5, 14, 10, 12, |
| 13, 0, 9, 5, 5, 11, 10, 13, 9, 10, 13, }; |
| |
| void vpx_post_proc_down_and_across_mb_row_c(unsigned char *src_ptr, |
| unsigned char *dst_ptr, |
| int src_pixels_per_line, |
| int dst_pixels_per_line, int cols, |
| unsigned char *f, int size) { |
| unsigned char *p_src, *p_dst; |
| int row; |
| int col; |
| unsigned char v; |
| unsigned char d[4]; |
| |
| for (row = 0; row < size; row++) { |
| /* post_proc_down for one row */ |
| p_src = src_ptr; |
| p_dst = dst_ptr; |
| |
| for (col = 0; col < cols; col++) { |
| unsigned char p_above2 = p_src[col - 2 * src_pixels_per_line]; |
| unsigned char p_above1 = p_src[col - src_pixels_per_line]; |
| unsigned char p_below1 = p_src[col + src_pixels_per_line]; |
| unsigned char p_below2 = p_src[col + 2 * src_pixels_per_line]; |
| |
| v = p_src[col]; |
| |
| if ((abs(v - p_above2) < f[col]) && (abs(v - p_above1) < f[col]) |
| && (abs(v - p_below1) < f[col]) && (abs(v - p_below2) < f[col])) { |
| unsigned char k1, k2, k3; |
| k1 = (p_above2 + p_above1 + 1) >> 1; |
| k2 = (p_below2 + p_below1 + 1) >> 1; |
| k3 = (k1 + k2 + 1) >> 1; |
| v = (k3 + v + 1) >> 1; |
| } |
| |
| p_dst[col] = v; |
| } |
| |
| /* now post_proc_across */ |
| p_src = dst_ptr; |
| p_dst = dst_ptr; |
| |
| p_src[-2] = p_src[-1] = p_src[0]; |
| p_src[cols] = p_src[cols + 1] = p_src[cols - 1]; |
| |
| for (col = 0; col < cols; col++) { |
| v = p_src[col]; |
| |
| if ((abs(v - p_src[col - 2]) < f[col]) |
| && (abs(v - p_src[col - 1]) < f[col]) |
| && (abs(v - p_src[col + 1]) < f[col]) |
| && (abs(v - p_src[col + 2]) < f[col])) { |
| unsigned char k1, k2, k3; |
| k1 = (p_src[col - 2] + p_src[col - 1] + 1) >> 1; |
| k2 = (p_src[col + 2] + p_src[col + 1] + 1) >> 1; |
| k3 = (k1 + k2 + 1) >> 1; |
| v = (k3 + v + 1) >> 1; |
| } |
| |
| d[col & 3] = v; |
| |
| if (col >= 2) |
| p_dst[col - 2] = d[(col - 2) & 3]; |
| } |
| |
| /* handle the last two pixels */ |
| p_dst[col - 2] = d[(col - 2) & 3]; |
| p_dst[col - 1] = d[(col - 1) & 3]; |
| |
| /* next row */ |
| src_ptr += src_pixels_per_line; |
| dst_ptr += dst_pixels_per_line; |
| } |
| } |
| |
| void vpx_mbpost_proc_across_ip_c(unsigned char *src, int pitch, int rows, |
| int cols, int flimit) { |
| int r, c, i; |
| |
| unsigned char *s = src; |
| unsigned char d[16]; |
| |
| for (r = 0; r < rows; r++) { |
| int sumsq = 0; |
| int sum = 0; |
| |
| for (i = -8; i < 0; i++) |
| s[i] = s[0]; |
| |
| /* 17 avoids valgrind warning - we buffer values in c in d |
| * and only write them when we've read 8 ahead... |
| */ |
| for (i = 0; i < 17; i++) |
| s[i + cols] = s[cols - 1]; |
| |
| for (i = -8; i <= 6; i++) { |
| sumsq += s[i] * s[i]; |
| sum += s[i]; |
| d[i + 8] = 0; |
| } |
| |
| for (c = 0; c < cols + 8; c++) { |
| int x = s[c + 7] - s[c - 8]; |
| int y = s[c + 7] + s[c - 8]; |
| |
| sum += x; |
| sumsq += x * y; |
| |
| d[c & 15] = s[c]; |
| |
| if (sumsq * 15 - sum * sum < flimit) { |
| d[c & 15] = (8 + sum + s[c]) >> 4; |
| } |
| |
| s[c - 8] = d[(c - 8) & 15]; |
| } |
| |
| s += pitch; |
| } |
| } |
| |
| void vpx_mbpost_proc_down_c(unsigned char *dst, int pitch, int rows, int cols, |
| int flimit) { |
| int r, c, i; |
| const int16_t *rv3 = &vpx_rv[63 & rand()]; |
| |
| for (c = 0; c < cols; c++) { |
| unsigned char *s = &dst[c]; |
| int sumsq = 0; |
| int sum = 0; |
| unsigned char d[16]; |
| const int16_t *rv2 = rv3 + ((c * 17) & 127); |
| |
| for (i = -8; i < 0; i++) |
| s[i * pitch] = s[0]; |
| |
| /* 17 avoids valgrind warning - we buffer values in c in d |
| * and only write them when we've read 8 ahead... |
| */ |
| for (i = 0; i < 17; i++) |
| s[(i + rows) * pitch] = s[(rows - 1) * pitch]; |
| |
| for (i = -8; i <= 6; i++) { |
| sumsq += s[i * pitch] * s[i * pitch]; |
| sum += s[i * pitch]; |
| } |
| |
| for (r = 0; r < rows + 8; r++) { |
| sumsq += s[7 * pitch] * s[7 * pitch] - s[-8 * pitch] * s[-8 * pitch]; |
| sum += s[7 * pitch] - s[-8 * pitch]; |
| d[r & 15] = s[0]; |
| |
| if (sumsq * 15 - sum * sum < flimit) { |
| d[r & 15] = (rv2[r & 127] + sum + s[0]) >> 4; |
| } |
| if (r >= 8) |
| s[-8 * pitch] = d[(r - 8) & 15]; |
| s += pitch; |
| } |
| } |
| } |
| |
| #if CONFIG_POSTPROC |
| static void vpx_de_mblock(YV12_BUFFER_CONFIG *post, |
| int q) { |
| vpx_mbpost_proc_across_ip(post->y_buffer, post->y_stride, post->y_height, |
| post->y_width, q2mbl(q)); |
| vpx_mbpost_proc_down(post->y_buffer, post->y_stride, post->y_height, |
| post->y_width, q2mbl(q)); |
| } |
| |
| #endif |
