FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/af_aformat.c
Date: 2025-11-02 12:19:36
Exec Total Coverage
Lines: 30 36 83.3%
Functions: 2 2 100.0%
Branches: 18 24 75.0%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2011 Mina Nagy Zaki
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * format audio filter
24 */
25
26 #include "libavutil/avstring.h"
27 #include "libavutil/channel_layout.h"
28 #include "libavutil/common.h"
29 #include "libavutil/mem.h"
30 #include "libavutil/opt.h"
31
32 #include "audio.h"
33 #include "avfilter.h"
34 #include "filters.h"
35 #include "formats.h"
36
37 typedef struct AFormatContext {
38 const AVClass *class;
39
40 enum AVSampleFormat *formats;
41 unsigned nb_formats;
42
43 int *sample_rates;
44 unsigned nb_sample_rates;
45
46 AVChannelLayout *channel_layouts;
47 unsigned nb_channel_layouts;
48 } AFormatContext;
49
50 static const AVOptionArrayDef array_def = { .sep = '|' };
51
52 #define OFFSET(x) offsetof(AFormatContext, x)
53 #define A AV_OPT_FLAG_AUDIO_PARAM
54 #define F AV_OPT_FLAG_FILTERING_PARAM
55 static const AVOption aformat_options[] = {
56 { "sample_fmts", "A '|'-separated list of sample formats.", OFFSET(formats),
57 AV_OPT_TYPE_SAMPLE_FMT | AV_OPT_TYPE_FLAG_ARRAY, .default_val.arr = &array_def, .flags = A|F },
58 { "f", "A '|'-separated list of sample formats.", OFFSET(formats),
59 AV_OPT_TYPE_SAMPLE_FMT | AV_OPT_TYPE_FLAG_ARRAY, .default_val.arr = &array_def, .flags = A|F },
60 { "sample_rates", "A '|'-separated list of sample rates.", OFFSET(sample_rates),
61 AV_OPT_TYPE_INT | AV_OPT_TYPE_FLAG_ARRAY, .default_val.arr = &array_def, .min = 1, .max = INT_MAX, .flags = A|F },
62 { "r", "A '|'-separated list of sample rates.", OFFSET(sample_rates),
63 AV_OPT_TYPE_INT | AV_OPT_TYPE_FLAG_ARRAY, .default_val.arr = &array_def, .min = 1, .max = INT_MAX, .flags = A|F },
64 { "channel_layouts", "A '|'-separated list of channel layouts.", OFFSET(channel_layouts),
65 AV_OPT_TYPE_CHLAYOUT | AV_OPT_TYPE_FLAG_ARRAY, .default_val.arr = &array_def, .flags = A|F },
66 { "cl", "A '|'-separated list of channel layouts.", OFFSET(channel_layouts),
67 AV_OPT_TYPE_CHLAYOUT | AV_OPT_TYPE_FLAG_ARRAY, .default_val.arr = &array_def, .flags = A|F },
68 { NULL }
69 };
70
71 AVFILTER_DEFINE_CLASS(aformat);
72
73 1973 static av_cold int init(AVFilterContext *ctx)
74 {
75 1973 AFormatContext *s = ctx->priv;
76
77 // terminate format lists for ff_set*_from_list()
78
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 1973 if (s->nb_formats) {
79 1971 void *tmp = av_realloc_array(s->formats, s->nb_formats + 1,
80 sizeof(*s->formats));
81
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 1971 if (!tmp)
82 ✗ return AVERROR(ENOMEM);
83 1971 s->formats = tmp;
84 1971 s->formats[s->nb_formats] = AV_SAMPLE_FMT_NONE;
85
86 }
87
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 1973 if (s->nb_sample_rates) {
88 68 void *tmp = av_realloc_array(s->sample_rates, s->nb_sample_rates + 1,
89 sizeof(*s->sample_rates));
90
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 68 if (!tmp)
91 ✗ return AVERROR(ENOMEM);
92 68 s->sample_rates = tmp;
93 68 s->sample_rates[s->nb_sample_rates] = -1;
94 }
95
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 1973 if (s->nb_channel_layouts) {
96 93 void *tmp = av_realloc_array(s->channel_layouts, s->nb_channel_layouts + 1,
97 sizeof(*s->channel_layouts));
98
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 93 if (!tmp)
99 ✗ return AVERROR(ENOMEM);
100 93 s->channel_layouts = tmp;
101 93 s->channel_layouts[s->nb_channel_layouts] = (AVChannelLayout){ .nb_channels = 0 };
102 }
103
104 1973 return 0;
105 }
106
107 1656 static int query_formats(const AVFilterContext *ctx,
108 AVFilterFormatsConfig **cfg_in,
109 AVFilterFormatsConfig **cfg_out)
110 {
111 1656 const AFormatContext *s = ctx->priv;
112 int ret;
113
114
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 1656 if (s->nb_formats) {
115 1655 ret = ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, s->formats);
116
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 1655 if (ret < 0)
117 ✗ return ret;
118 }
119
120
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 1656 if (s->nb_sample_rates) {
121 68 ret = ff_set_common_samplerates_from_list2(ctx, cfg_in, cfg_out, s->sample_rates);
122
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 68 if (ret < 0)
123 ✗ return ret;
124 }
125
126
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 1656 if (s->nb_channel_layouts) {
127 92 ret = ff_set_common_channel_layouts_from_list2(ctx, cfg_in, cfg_out, s->channel_layouts);
128
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 92 if (ret < 0)
129 ✗ return ret;
130 }
131
132 1656 return 0;
133 }
134
135 const FFFilter ff_af_aformat = {
136 .p.name = "aformat",
137 .p.description = NULL_IF_CONFIG_SMALL("Convert the input audio to one of the specified formats."),
138 .p.priv_class = &aformat_class,
139 .p.flags = AVFILTER_FLAG_METADATA_ONLY,
140 .init = init,
141 .priv_size = sizeof(AFormatContext),
142 FILTER_INPUTS(ff_audio_default_filterpad),
143 FILTER_OUTPUTS(ff_audio_default_filterpad),
144 FILTER_QUERY_FUNC2(query_formats),
145 };
146