FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavutil/tests/pixdesc.c
Date: 2026-08-28 22:32:55
Exec Total Coverage
Lines: 94 112 83.9%
Functions: 10 10 100.0%
Branches: 55 88 62.5%
Line Branch Exec Source
1 /*
2 * pixel format descriptor
3 * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
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 <stdio.h>
23 #include <string.h>
24
25 #include "libavutil/macros.h"
26 #include "libavutil/pixdesc.h"
27 #include "libavutil/pixfmt.h"
28
29 /*
30 * from_name() may legitimately map to a different index when two enum
31 * values share the same name string (e.g. AVCOL_PRI_RESERVED0 and
32 * AVCOL_PRI_RESERVED both use "reserved"). Accept that as long as
33 * name(back) equals name(i).
34 */
35 64 static int check_name_equivalence(const char *name, const char *back_name)
36 {
37
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 64 return back_name && !strcmp(name, back_name);
38 }
39
40 1 static int test_pix_fmt_round_trip(void)
41 {
42 1 int fail = 0;
43
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 269 for (int i = 0; i < AV_PIX_FMT_NB; i++) {
44 268 const char *name = av_get_pix_fmt_name(i);
45
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 268 if (!name)
46 ✗ continue;
47
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 268 if (av_get_pix_fmt(name) != i)
48 ✗ fail++;
49 }
50 1 return fail;
51 }
52
53 1 static int test_color_range_round_trip(void)
54 {
55 1 int fail = 0;
56
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 4 for (int i = 0; i < AVCOL_RANGE_NB; i++) {
57 3 const char *name = av_color_range_name(i);
58
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 3 if (!name)
59 ✗ continue;
60 3 int back = av_color_range_from_name(name);
61
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 3 if (back < 0 || !check_name_equivalence(name, av_color_range_name(back)))
62 ✗ fail++;
63 }
64 1 return fail;
65 }
66
67 1 static int test_color_primaries_round_trip(void)
68 {
69 1 int fail = 0;
70
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 24 for (int i = 0; i < AVCOL_PRI_NB; i++) {
71 23 const char *name = av_color_primaries_name(i);
72
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 23 if (!name)
73 9 continue;
74 14 int back = av_color_primaries_from_name(name);
75
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 14 if (back < 0 || !check_name_equivalence(name, av_color_primaries_name(back)))
76 ✗ fail++;
77 }
78 1 return fail;
79 }
80
81 1 static int test_color_transfer_round_trip(void)
82 {
83 1 int fail = 0;
84
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 20 for (int i = 0; i < AVCOL_TRC_NB; i++) {
85 19 const char *name = av_color_transfer_name(i);
86
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 19 if (!name)
87 ✗ continue;
88 19 int back = av_color_transfer_from_name(name);
89
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 19 if (back < 0 || !check_name_equivalence(name, av_color_transfer_name(back)))
90 ✗ fail++;
91 }
92 1 return fail;
93 }
94
95 1 static int test_color_space_round_trip(void)
96 {
97 1 int fail = 0;
98
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 19 for (int i = 0; i < AVCOL_SPC_NB; i++) {
99 18 const char *name = av_color_space_name(i);
100
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 18 if (!name)
101 ✗ continue;
102 18 int back = av_color_space_from_name(name);
103
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 18 if (back < 0 || !check_name_equivalence(name, av_color_space_name(back)))
104 ✗ fail++;
105 }
106 1 return fail;
107 }
108
109 1 static int test_chroma_location_round_trip(void)
110 {
111 1 int fail = 0;
112
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 8 for (int i = 0; i < AVCHROMA_LOC_NB; i++) {
113 7 const char *name = av_chroma_location_name(i);
114
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 7 if (!name)
115 ✗ continue;
116 7 int back = av_chroma_location_from_name(name);
117
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 7 if (back < 0 || !check_name_equivalence(name, av_chroma_location_name(back)))
118 ✗ fail++;
119 }
120 1 return fail;
121 }
122
123 1 static int test_alpha_mode_round_trip(void)
124 {
125 1 int fail = 0;
126
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 4 for (int i = 0; i < AVALPHA_MODE_NB; i++) {
127 3 const char *name = av_alpha_mode_name(i);
128
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 3 if (!name)
129 ✗ continue;
130 3 int back = av_alpha_mode_from_name(name);
131
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 3 if (back < 0 || !check_name_equivalence(name, av_alpha_mode_name(back)))
132 ✗ fail++;
133 }
134 1 return fail;
135 }
136
137 1 static int test_chroma_location_pos_round_trip(void)
138 {
139 1 int fail = 0;
140
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 7 for (int i = AVCHROMA_LOC_UNSPECIFIED + 1; i < AVCHROMA_LOC_NB; i++) {
141 int xpos, ypos;
142
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 6 if (av_chroma_location_enum_to_pos(&xpos, &ypos, i) < 0) {
143 ✗ fail++;
144 ✗ continue;
145 }
146
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 6 if ((int)av_chroma_location_pos_to_enum(xpos, ypos) != i)
147 ✗ fail++;
148 }
149 1 return fail;
150 }
151
152 1 int main(void)
153 {
154 1 int skip = 0;
155
156 1 printf("Testing av_get_pix_fmt() / av_get_pix_fmt_name() round-trip\n");
157
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 1 printf(" result: %s\n",
158 1 test_pix_fmt_round_trip() ? "FAIL" : "OK");
159
160 1 printf("\nTesting av_color_*_name() / av_color_*_from_name() round-trips\n");
161
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 1 printf(" av_color_range: %s\n",
162 1 test_color_range_round_trip() ? "FAIL" : "OK");
163
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 1 printf(" av_color_primaries: %s\n",
164 1 test_color_primaries_round_trip() ? "FAIL" : "OK");
165
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 1 printf(" av_color_transfer: %s\n",
166 1 test_color_transfer_round_trip() ? "FAIL" : "OK");
167
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 1 printf(" av_color_space: %s\n",
168 1 test_color_space_round_trip() ? "FAIL" : "OK");
169
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 1 printf(" av_chroma_location: %s\n",
170 1 test_chroma_location_round_trip() ? "FAIL" : "OK");
171
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 1 printf(" av_alpha_mode: %s\n",
172 1 test_alpha_mode_round_trip() ? "FAIL" : "OK");
173
174 1 printf("\nTesting av_chroma_location_enum_to_pos / pos_to_enum round-trip\n");
175
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 1 printf(" result: %s\n",
176 1 test_chroma_location_pos_round_trip() ? "FAIL" : "OK");
177
178 1 printf("\nTesting pixel format descriptors\n");
179
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 537 for (int i = 0; i < AV_PIX_FMT_NB * 2; i++) {
180 536 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
181
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 536 if (!desc || !desc->name) {
182 268 skip++;
183 268 continue;
184 }
185
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 268 if (skip) {
186 ✗ printf(" %3d unused pixel format values\n", skip);
187 ✗ skip = 0;
188 }
189 268 printf(" pix fmt %s avg_bpp:%d planes:%d\n", desc->name,
190 av_get_padded_bits_per_pixel(desc),
191 av_pix_fmt_count_planes(i));
192 }
193
194 1 return 0;
195 }
196