FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/videodsp_template.c
Date: 2024-07-16 12:46:59
Exec Total Coverage
Lines: 42 43 97.7%
Functions: 0 0 -%
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 #if BIT_DEPTH != 8
24 // ff_emulated_edge_mc_8 is used by the x86 MpegVideoDSP API.
25 static
26 #endif
27 16122181 void FUNC(ff_emulated_edge_mc)(uint8_t *buf, const uint8_t *src,
28 ptrdiff_t buf_linesize,
29 ptrdiff_t src_linesize,
30 int block_w, int block_h,
31 int src_x, int src_y, int w, int h)
32 {
33 int x, y;
34 int start_y, start_x, end_y, end_x;
35
36 16122181 if (!w || !h)
37 return;
38
39 av_assert2(block_w * sizeof(pixel) <= FFABS(buf_linesize));
40
41 16122181 if (src_y >= h) {
42 136625 src -= src_y * src_linesize;
43 136625 src += (h - 1) * src_linesize;
44 136625 src_y = h - 1;
45 15985556 } else if (src_y <= -block_h) {
46 34061 src -= src_y * src_linesize;
47 34061 src += (1 - block_h) * src_linesize;
48 34061 src_y = 1 - block_h;
49 }
50 16122181 if (src_x >= w) {
51 // The subtracted expression has an unsigned type and must thus not be negative
52 163370 src -= (1 + src_x - w) * sizeof(pixel);
53 163370 src_x = w - 1;
54 15958811 } else if (src_x <= -block_w) {
55 46534 src += (1 - block_w - src_x) * sizeof(pixel);
56 46534 src_x = 1 - block_w;
57 }
58
59 16122181 start_y = FFMAX(0, -src_y);
60 16122181 start_x = FFMAX(0, -src_x);
61 16122181 end_y = FFMIN(block_h, h-src_y);
62 16122181 end_x = FFMIN(block_w, w-src_x);
63 av_assert2(start_y < end_y && block_h);
64 av_assert2(start_x < end_x && block_w);
65
66 16122181 w = end_x - start_x;
67 16122181 src += start_y * src_linesize + start_x * (ptrdiff_t)sizeof(pixel);
68 16122181 buf += start_x * sizeof(pixel);
69
70 // top
71 23889164 for (y = 0; y < start_y; y++) {
72 7766983 memcpy(buf, src, w * sizeof(pixel));
73 7766983 buf += buf_linesize;
74 }
75
76 // copy existing part
77 219639941 for (; y < end_y; y++) {
78 203517760 memcpy(buf, src, w * sizeof(pixel));
79 203517760 src += src_linesize;
80 203517760 buf += buf_linesize;
81 }
82
83 // bottom
84 16122181 src -= src_linesize;
85 42728181 for (; y < block_h; y++) {
86 26606000 memcpy(buf, src, w * sizeof(pixel));
87 26606000 buf += buf_linesize;
88 }
89
90 16122181 buf -= block_h * buf_linesize + start_x * (ptrdiff_t)sizeof(pixel);
91 254012924 while (block_h--) {
92 237890743 pixel *bufp = (pixel *) buf;
93
94 // left
95 351594392 for(x = 0; x < start_x; x++) {
96 113703649 bufp[x] = bufp[start_x];
97 }
98
99 // right
100 497597883 for (x = end_x; x < block_w; x++) {
101 259707140 bufp[x] = bufp[end_x - 1];
102 }
103 237890743 buf += buf_linesize;
104 }
105 }
106