FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/boxblur.c
Date: 2024-07-17 14:05:47
Exec Total Coverage
Lines: 29 33 87.9%
Functions: 1 1 100.0%
Branches: 16 32 50.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (c) 2011 Stefano Sabatini
4 * Copyright (c) 2018 Danil Iashchenko
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "libavutil/mem.h"
24 #include "boxblur.h"
25
26 static const char *const var_names[] = {
27 "w",
28 "h",
29 "cw",
30 "ch",
31 "hsub",
32 "vsub",
33 NULL
34 };
35
36 enum var_name {
37 VAR_W,
38 VAR_H,
39 VAR_CW,
40 VAR_CH,
41 VAR_HSUB,
42 VAR_VSUB,
43 VARS_NB
44 };
45
46
47 1 int ff_boxblur_eval_filter_params(AVFilterLink *inlink,
48 FilterParam *luma_param,
49 FilterParam *chroma_param,
50 FilterParam *alpha_param)
51 {
52 1 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
53 1 AVFilterContext *ctx = inlink->dst;
54 1 int w = inlink->w, h = inlink->h;
55 int cw, ch;
56 double var_values[VARS_NB], res;
57 char *expr;
58 int ret;
59
60
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1 if (!luma_param->radius_expr) {
61 av_log(ctx, AV_LOG_ERROR, "Luma radius expression is not set.\n");
62 return AVERROR(EINVAL);
63 }
64
65 /* fill missing params */
66
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1 if (!chroma_param->radius_expr) {
67 1 chroma_param->radius_expr = av_strdup(luma_param->radius_expr);
68
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1 if (!chroma_param->radius_expr)
69 return AVERROR(ENOMEM);
70 }
71
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1 if (chroma_param->power < 0)
72 1 chroma_param->power = luma_param->power;
73
74
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1 if (!alpha_param->radius_expr) {
75 1 alpha_param->radius_expr = av_strdup(luma_param->radius_expr);
76
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1 if (!alpha_param->radius_expr)
77 return AVERROR(ENOMEM);
78 }
79
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1 if (alpha_param->power < 0)
80 1 alpha_param->power = luma_param->power;
81
82 1 var_values[VAR_W] = inlink->w;
83 1 var_values[VAR_H] = inlink->h;
84 1 var_values[VAR_CW] = cw = w>>(desc->log2_chroma_w);
85 1 var_values[VAR_CH] = ch = h>>(desc->log2_chroma_h);
86 1 var_values[VAR_HSUB] = 1<<(desc->log2_chroma_w);
87 1 var_values[VAR_VSUB] = 1<<(desc->log2_chroma_h);
88
89 #define EVAL_RADIUS_EXPR(comp) \
90 expr = comp->radius_expr; \
91 ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, \
92 NULL, NULL, NULL, NULL, NULL, 0, ctx); \
93 comp->radius = res; \
94 if (ret < 0) { \
95 av_log(ctx, AV_LOG_ERROR, \
96 "Error when evaluating " #comp " radius expression '%s'\n", expr); \
97 return ret; \
98 }
99
100
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1 EVAL_RADIUS_EXPR(luma_param);
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1 EVAL_RADIUS_EXPR(chroma_param);
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1 EVAL_RADIUS_EXPR(alpha_param);
103
104 1 av_log(ctx, AV_LOG_VERBOSE,
105 "luma_radius:%d luma_power:%d "
106 "chroma_radius:%d chroma_power:%d "
107 "alpha_radius:%d alpha_power:%d "
108 "w:%d chroma_w:%d h:%d chroma_h:%d\n",
109 luma_param ->radius, luma_param ->power,
110 chroma_param->radius, chroma_param->power,
111 alpha_param ->radius, alpha_param ->power,
112 w, cw, h, ch);
113
114
115 #define CHECK_RADIUS_VAL(w_, h_, comp) \
116 if (comp->radius < 0 || \
117 2*comp->radius > FFMIN(w_, h_)) { \
118 av_log(ctx, AV_LOG_ERROR, \
119 "Invalid " #comp " radius value %d, must be >= 0 and <= %d\n", \
120 comp->radius, FFMIN(w_, h_)/2); \
121 return AVERROR(EINVAL); \
122 }
123
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1 CHECK_RADIUS_VAL(w, h, luma_param);
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1 CHECK_RADIUS_VAL(cw, ch, chroma_param);
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1 CHECK_RADIUS_VAL(w, h, alpha_param);
126
127 1 return 0;
128 }
129