diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/deblock.c')
-rw-r--r-- | media/libvpx/libvpx/vpx_dsp/deblock.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/deblock.c b/media/libvpx/libvpx/vpx_dsp/deblock.c new file mode 100644 index 0000000000..455b73bbce --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/deblock.c @@ -0,0 +1,196 @@ +/* + * 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 <assert.h> +#include <stdlib.h> +#include "./vpx_dsp_rtcd.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, + unsigned char *dst, int src_pitch, + int dst_pitch, int cols, + unsigned char *flimits, int size) { + unsigned char *p_src, *p_dst; + int row; + int col; + unsigned char v; + unsigned char d[4]; + + assert(size >= 8); + assert(cols >= 8); + + for (row = 0; row < size; row++) { + /* post_proc_down for one row */ + p_src = src; + p_dst = dst; + + for (col = 0; col < cols; col++) { + unsigned char p_above2 = p_src[col - 2 * src_pitch]; + unsigned char p_above1 = p_src[col - src_pitch]; + unsigned char p_below1 = p_src[col + src_pitch]; + unsigned char p_below2 = p_src[col + 2 * src_pitch]; + + v = p_src[col]; + + if ((abs(v - p_above2) < flimits[col]) && + (abs(v - p_above1) < flimits[col]) && + (abs(v - p_below1) < flimits[col]) && + (abs(v - p_below2) < flimits[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; + p_dst = dst; + + 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]) < flimits[col]) && + (abs(v - p_src[col - 1]) < flimits[col]) && + (abs(v - p_src[col + 1]) < flimits[col]) && + (abs(v - p_src[col + 2]) < flimits[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 += src_pitch; + dst += dst_pitch; + } +} + +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 = 16; + 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; + + for (c = 0; c < cols; c++) { + unsigned char *s = &dst[c]; + int sumsq = 0; + int sum = 0; + unsigned char d[16]; + + 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] = (vpx_rv[(r & 127) + (c & 7)] + sum + s[0]) >> 4; + } + if (r >= 8) s[-8 * pitch] = d[(r - 8) & 15]; + s += pitch; + } + } +} |