FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/audio.c
Date: 2026-04-19 10:56:23
Exec Total Coverage
Lines: 38 48 79.2%
Functions: 4 5 80.0%
Branches: 19 28 67.9%
Line Branch Exec Source
1 /*
2 * Copyright (c) Stefano Sabatini | stefasab at gmail.com
3 * Copyright (c) S.N. Hemanth Meenakshisundaram | smeenaks at ucsd.edu
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 "libavutil/avassert.h"
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/common.h"
25 #include "libavutil/cpu.h"
26 #include "libavutil/eval.h"
27
28 #include "audio.h"
29 #include "avfilter.h"
30 #include "avfilter_internal.h"
31 #include "filters.h"
32 #include "framepool.h"
33
34 const AVFilterPad ff_audio_default_filterpad[1] = {
35 {
36 .name = "default",
37 .type = AVMEDIA_TYPE_AUDIO,
38 }
39 };
40
41 ✗ AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples)
42 {
43 ✗ return ff_get_audio_buffer(link->dst->outputs[0], nb_samples);
44 }
45
46 277388 AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples)
47 {
48 277388 AVFrame *frame = NULL;
49 277388 FilterLinkInternal *const li = ff_link_internal(link);
50 277388 int channels = link->ch_layout.nb_channels;
51 277388 int align = av_cpu_max_align();
52
53
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 277388 if (ff_frame_pool_audio_reinit(&li->frame_pool, channels, nb_samples,
54 277388 link->format, align) < 0)
55 ✗ return NULL;
56
57 277388 frame = ff_frame_pool_get(&li->frame_pool);
58
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 277388 if (!frame)
59 ✗ return NULL;
60
61 277388 frame->nb_samples = nb_samples;
62
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 519472 if (link->ch_layout.order != AV_CHANNEL_ORDER_UNSPEC &&
63 242084 av_channel_layout_copy(&frame->ch_layout, &link->ch_layout) < 0) {
64 ✗ av_frame_free(&frame);
65 ✗ return NULL;
66 }
67 277388 frame->sample_rate = link->sample_rate;
68
69 277388 av_samples_set_silence(frame->extended_data, 0, nb_samples, channels, link->format);
70
71 277388 return frame;
72 }
73
74 277423 AVFrame *ff_get_audio_buffer(AVFilterLink *link, int nb_samples)
75 {
76 277423 AVFrame *ret = NULL;
77
78
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 277423 if (link->dstpad->get_buffer.audio)
79 350 ret = link->dstpad->get_buffer.audio(link, nb_samples);
80
81
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 277423 if (!ret)
82 277073 ret = ff_default_get_audio_buffer(link, nb_samples);
83
84 277423 return ret;
85 }
86
87 16 int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx)
88 {
89 char *tail;
90 16 double srate = av_strtod(arg, &tail);
91
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 16 if (*tail || srate < 1 || (int)srate != srate || srate > INT_MAX) {
92 ✗ av_log(log_ctx, AV_LOG_ERROR, "Invalid sample rate '%s'\n", arg);
93 ✗ return AVERROR(EINVAL);
94 }
95 16 *ret = srate;
96 16 return 0;
97 }
98
99 69 int ff_parse_channel_layout(AVChannelLayout *ret, int *nret, const char *arg,
100 void *log_ctx)
101 {
102 69 AVChannelLayout chlayout = { 0 };
103 int res;
104
105 69 res = av_channel_layout_from_string(&chlayout, arg);
106
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 69 if (res < 0) {
107 5 av_log(log_ctx, AV_LOG_ERROR, "Invalid channel layout '%s'\n", arg);
108 5 return AVERROR(EINVAL);
109 }
110
111
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 64 if (chlayout.order == AV_CHANNEL_ORDER_UNSPEC && !nret) {
112 ✗ av_log(log_ctx, AV_LOG_ERROR, "Unknown channel layout '%s' is not supported.\n", arg);
113 ✗ return AVERROR(EINVAL);
114 }
115 64 *ret = chlayout;
116
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 64 if (nret)
117 64 *nret = chlayout.nb_channels;
118
119 64 return 0;
120 }
121