FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/videodsp_template.c
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 42 43 97.7%
Branches: 0 0 -%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2002-2012 Michael Niedermayer
3 * Copyright (C) 2012 Ronald S. Bultje
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "bit_depth_template.c"
23 13413609 void FUNC(ff_emulated_edge_mc)(uint8_t *buf, const uint8_t *src,
24 ptrdiff_t buf_linesize,
25 ptrdiff_t src_linesize,
26 int block_w, int block_h,
27 int src_x, int src_y, int w, int h)
28 {
29 int x, y;
30 int start_y, start_x, end_y, end_x;
31
32 13413609 if (!w || !h)
33 return;
34
35 av_assert2(block_w * sizeof(pixel) <= FFABS(buf_linesize));
36
37 13413609 if (src_y >= h) {
38 130595 src -= src_y * src_linesize;
39 130595 src += (h - 1) * src_linesize;
40 130595 src_y = h - 1;
41 13283014 } else if (src_y <= -block_h) {
42 31423 src -= src_y * src_linesize;
43 31423 src += (1 - block_h) * src_linesize;
44 31423 src_y = 1 - block_h;
45 }
46 13413609 if (src_x >= w) {
47 // The subtracted expression has an unsigned type and must thus not be negative
48 161413 src -= (1 + src_x - w) * sizeof(pixel);
49 161413 src_x = w - 1;
50 13252196 } else if (src_x <= -block_w) {
51 39591 src += (1 - block_w - src_x) * sizeof(pixel);
52 39591 src_x = 1 - block_w;
53 }
54
55 13413609 start_y = FFMAX(0, -src_y);
56 13413609 start_x = FFMAX(0, -src_x);
57 13413609 end_y = FFMIN(block_h, h-src_y);
58 13413609 end_x = FFMIN(block_w, w-src_x);
59 av_assert2(start_y < end_y && block_h);
60 av_assert2(start_x < end_x && block_w);
61
62 13413609 w = end_x - start_x;
63 13413609 src += start_y * src_linesize + start_x * sizeof(pixel);
64 13413609 buf += start_x * sizeof(pixel);
65
66 // top
67 19689543 for (y = 0; y < start_y; y++) {
68 6275934 memcpy(buf, src, w * sizeof(pixel));
69 6275934 buf += buf_linesize;
70 }
71
72 // copy existing part
73 178463515 for (; y < end_y; y++) {
74 165049906 memcpy(buf, src, w * sizeof(pixel));
75 165049906 src += src_linesize;
76 165049906 buf += buf_linesize;
77 }
78
79 // bottom
80 13413609 src -= src_linesize;
81 38358023 for (; y < block_h; y++) {
82 24944414 memcpy(buf, src, w * sizeof(pixel));
83 24944414 buf += buf_linesize;
84 }
85
86 13413609 buf -= block_h * buf_linesize + start_x * sizeof(pixel);
87 209683863 while (block_h--) {
88 196270254 pixel *bufp = (pixel *) buf;
89
90 // left
91 285389057 for(x = 0; x < start_x; x++) {
92 89118803 bufp[x] = bufp[start_x];
93 }
94
95 // right
96 431829886 for (x = end_x; x < block_w; x++) {
97 235559632 bufp[x] = bufp[end_x - 1];
98 }
99 196270254 buf += buf_linesize;
100 }
101 }
102