1 /*
2 * Copyright (c) 2018 Yingming Fan <yingmingfan@gmail.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #include <string.h>
22
26
29
30 static const uint32_t
pixel_mask[3] = { 0xffffffff, 0x03ff03ff, 0x0fff0fff };
31 static const uint32_t
sao_size[] = {8, 16, 32, 48, 64, 80, 96, 112, 128};
32
33 #define SIZEOF_PIXEL ((bit_depth + 7) / 8)
34 #define PIXEL_STRIDE (2*MAX_CTU_SIZE + AV_INPUT_BUFFER_PADDING_SIZE) //same with sao_edge src_stride
35 #define BUF_SIZE (PIXEL_STRIDE * (MAX_CTU_SIZE+2) * 2) //+2 for top and bottom row, *2 for high bit depth
36 #define OFFSET_THRESH (1 << (bit_depth - 5))
37 #define OFFSET_LENGTH 5
38
39 #define randomize_buffers(buf0, buf1, size) \
40 do { \
41 uint32_t mask = pixel_mask[(bit_depth - 8) >> 1]; \
42 int k; \
43 for (k = 0; k < size; k += 4) { \
44 uint32_t r = rnd() & mask; \
45 AV_WN32A(buf0 + k, r); \
46 AV_WN32A(buf1 + k, r); \
47 } \
48 } while (0)
49
50 #define randomize_buffers2(buf, size) \
51 do { \
52 uint32_t max_offset = OFFSET_THRESH; \
53 int k; \
54 if (bit_depth == 8) { \
55 for (k = 0; k < size; k++) { \
56 uint8_t r = rnd() % max_offset; \
57 buf[k] = r; \
58 } \
59 } else { \
60 for (k = 0; k < size; k++) { \
61 uint16_t r = rnd() % max_offset; \
62 buf[k] = r; \
63 } \
64 } \
65 } while (0)
66
68 {
74 const int left_class =
rnd()%32;
75 const int walign = 16;
76
79 const int prev_size =
i > 0 ?
sao_size[
i - 1] : 0;
81 declare_func(
void, uint8_t *
dst,
const uint8_t *
src, ptrdiff_t dst_stride, ptrdiff_t src_stride,
82 const int16_t *sao_offset_val,
int sao_left_class,
int width,
int height);
83
85
86 for (
int w = prev_size + 4;
w <= block_size;
w += 4) {
91
95 }
97 }
98 }
99 }
100
102 {
108 const int eo =
rnd()%4;
109 const int walign = 16;
110
116 const int16_t *sao_offset_val,
int eo,
int width,
int height);
117
119 for (
int w = prev_size + 4;
w <= block_size;
w += 4) {
124
128 }
130 }
131 }
132 }
133
135 {
137
140
143 }
145
148
151 }
153 }