FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/soxdec.c
Date: 2026-04-24 19:58:39
Exec Total Coverage
Lines: 35 59 59.3%
Functions: 2 2 100.0%
Branches: 16 36 44.4%
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1 /*
2 * SoX native format demuxer
3 * Copyright (c) 2009 Daniel Verkamp <daniel@drv.nu>
4 *
5 * Based on libSoX sox-fmt.c
6 * Copyright (c) 2008 robs@users.sourceforge.net
7 *
8 * This file is part of FFmpeg.
9 *
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 /**
26 * @file
27 * SoX native format demuxer
28 * @author Daniel Verkamp
29 * @see http://wiki.multimedia.cx/index.php?title=SoX_native_intermediate_format
30 */
31
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/intfloat.h"
34 #include "libavutil/dict.h"
35 #include "libavutil/mem.h"
36 #include "avformat.h"
37 #include "avio_internal.h"
38 #include "demux.h"
39 #include "internal.h"
40 #include "pcm.h"
41 #include "sox.h"
42
43 7480 static int sox_probe(const AVProbeData *p)
44 {
45
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 7480 if (AV_RL32(p->buf) != SOX_TAG && AV_RB32(p->buf) != SOX_TAG)
46 7479 return 0;
47
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 1 if (AV_RN32(p->buf+4) == 0)
48 ✗ return 0;
49
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 1 if (AV_RN32(p->buf+24) == 0)
50 ✗ return 0;
51 1 return AVPROBE_SCORE_MAX;
52 }
53
54 1 static int sox_read_header(AVFormatContext *s)
55 {
56 1 AVIOContext *pb = s->pb;
57 unsigned header_size, comment_size;
58 double sample_rate, sample_rate_frac;
59 int channels;
60 AVStream *st;
61
62 1 st = avformat_new_stream(s, NULL);
63
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 1 if (!st)
64 ✗ return AVERROR(ENOMEM);
65
66 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
67
68
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 1 if (avio_rl32(pb) == SOX_TAG) {
69 1 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE;
70 1 header_size = avio_rl32(pb);
71 1 avio_skip(pb, 8); /* sample count */
72 1 sample_rate = av_int2double(avio_rl64(pb));
73 1 channels = avio_rl32(pb);
74 1 comment_size = avio_rl32(pb);
75 } else {
76 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE;
77 ✗ header_size = avio_rb32(pb);
78 ✗ avio_skip(pb, 8); /* sample count */
79 ✗ sample_rate = av_int2double(avio_rb64(pb));
80 ✗ channels = avio_rb32(pb);
81 ✗ comment_size = avio_rb32(pb);
82 }
83
84 1 st->codecpar->ch_layout.nb_channels = channels;
85
86
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 1 if (comment_size > 0xFFFFFFFFU - SOX_FIXED_HDR - 4U) {
87 ✗ av_log(s, AV_LOG_ERROR, "invalid comment size (%u)\n", comment_size);
88 ✗ return AVERROR_INVALIDDATA;
89 }
90
91
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 1 if (sample_rate <= 0 || sample_rate > INT_MAX) {
92 ✗ av_log(s, AV_LOG_ERROR, "invalid sample rate (%f)\n", sample_rate);
93 ✗ return AVERROR_INVALIDDATA;
94 }
95
96 1 sample_rate_frac = sample_rate - floor(sample_rate);
97
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 1 if (sample_rate_frac)
98 ✗ av_log(s, AV_LOG_WARNING,
99 "truncating fractional part of sample rate (%f)\n",
100 sample_rate_frac);
101
102
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 1 if ((header_size + 4) & 7 || header_size < SOX_FIXED_HDR + comment_size
103
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 1 || channels > 65535 || channels <= 0) /* Reserve top 16 bits */ {
104 ✗ av_log(s, AV_LOG_ERROR, "invalid header\n");
105 ✗ return AVERROR_INVALIDDATA;
106 }
107
108
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 1 if (comment_size && comment_size < UINT_MAX) {
109 ✗ char *comment = av_malloc(comment_size+1);
110 int ret;
111 ✗ if(!comment)
112 ✗ return AVERROR(ENOMEM);
113 ✗ if ((ret = ffio_read_size(pb, comment, comment_size)) < 0) {
114 ✗ av_freep(&comment);
115 ✗ return ret;
116 }
117 ✗ comment[comment_size] = 0;
118
119 ✗ av_dict_set(&s->metadata, "comment", comment,
120 AV_DICT_DONT_STRDUP_VAL);
121 }
122
123 1 avio_skip(pb, header_size - SOX_FIXED_HDR - comment_size);
124
125 1 st->codecpar->sample_rate = sample_rate;
126 1 st->codecpar->bits_per_coded_sample = 32;
127 1 st->codecpar->bit_rate = (int64_t)st->codecpar->sample_rate *
128 1 st->codecpar->bits_per_coded_sample *
129 channels;
130 1 st->codecpar->block_align = st->codecpar->bits_per_coded_sample *
131 1 channels / 8;
132
133 1 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
134
135 1 return 0;
136 }
137
138 const FFInputFormat ff_sox_demuxer = {
139 .p.name = "sox",
140 .p.long_name = NULL_IF_CONFIG_SMALL("SoX (Sound eXchange) native"),
141 .read_probe = sox_probe,
142 .read_header = sox_read_header,
143 .read_packet = ff_pcm_read_packet,
144 .read_seek = ff_pcm_read_seek,
145 };
146