FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/soxdec.c
Date: 2024-11-20 23:03:26
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 "demux.h"
38 #include "internal.h"
39 #include "pcm.h"
40 #include "sox.h"
41
42 7186 static int sox_probe(const AVProbeData *p)
43 {
44
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 7186 if (AV_RL32(p->buf) != SOX_TAG && AV_RB32(p->buf) != SOX_TAG)
45 7185 return 0;
46
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 1 if (AV_RN32(p->buf+4) == 0)
47 ✗ return 0;
48
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 1 if (AV_RN32(p->buf+24) == 0)
49 ✗ return 0;
50 1 return AVPROBE_SCORE_MAX;
51 }
52
53 1 static int sox_read_header(AVFormatContext *s)
54 {
55 1 AVIOContext *pb = s->pb;
56 unsigned header_size, comment_size;
57 double sample_rate, sample_rate_frac;
58 int channels;
59 AVStream *st;
60
61 1 st = avformat_new_stream(s, NULL);
62
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 1 if (!st)
63 ✗ return AVERROR(ENOMEM);
64
65 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
66
67
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 1 if (avio_rl32(pb) == SOX_TAG) {
68 1 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE;
69 1 header_size = avio_rl32(pb);
70 1 avio_skip(pb, 8); /* sample count */
71 1 sample_rate = av_int2double(avio_rl64(pb));
72 1 channels = avio_rl32(pb);
73 1 comment_size = avio_rl32(pb);
74 } else {
75 ✗ st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE;
76 ✗ header_size = avio_rb32(pb);
77 ✗ avio_skip(pb, 8); /* sample count */
78 ✗ sample_rate = av_int2double(avio_rb64(pb));
79 ✗ channels = avio_rb32(pb);
80 ✗ comment_size = avio_rb32(pb);
81 }
82
83 1 st->codecpar->ch_layout.nb_channels = channels;
84
85
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 1 if (comment_size > 0xFFFFFFFFU - SOX_FIXED_HDR - 4U) {
86 ✗ av_log(s, AV_LOG_ERROR, "invalid comment size (%u)\n", comment_size);
87 ✗ return AVERROR_INVALIDDATA;
88 }
89
90
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 1 if (sample_rate <= 0 || sample_rate > INT_MAX) {
91 ✗ av_log(s, AV_LOG_ERROR, "invalid sample rate (%f)\n", sample_rate);
92 ✗ return AVERROR_INVALIDDATA;
93 }
94
95 1 sample_rate_frac = sample_rate - floor(sample_rate);
96
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 1 if (sample_rate_frac)
97 ✗ av_log(s, AV_LOG_WARNING,
98 "truncating fractional part of sample rate (%f)\n",
99 sample_rate_frac);
100
101
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 1 if ((header_size + 4) & 7 || header_size < SOX_FIXED_HDR + comment_size
102
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 1 || channels > 65535 || channels <= 0) /* Reserve top 16 bits */ {
103 ✗ av_log(s, AV_LOG_ERROR, "invalid header\n");
104 ✗ return AVERROR_INVALIDDATA;
105 }
106
107
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 1 if (comment_size && comment_size < UINT_MAX) {
108 ✗ char *comment = av_malloc(comment_size+1);
109 ✗ if(!comment)
110 ✗ return AVERROR(ENOMEM);
111 ✗ if (avio_read(pb, comment, comment_size) != comment_size) {
112 ✗ av_freep(&comment);
113 ✗ return AVERROR(EIO);
114 }
115 ✗ comment[comment_size] = 0;
116
117 ✗ av_dict_set(&s->metadata, "comment", comment,
118 AV_DICT_DONT_STRDUP_VAL);
119 }
120
121 1 avio_skip(pb, header_size - SOX_FIXED_HDR - comment_size);
122
123 1 st->codecpar->sample_rate = sample_rate;
124 1 st->codecpar->bits_per_coded_sample = 32;
125 1 st->codecpar->bit_rate = (int64_t)st->codecpar->sample_rate *
126 1 st->codecpar->bits_per_coded_sample *
127 channels;
128 1 st->codecpar->block_align = st->codecpar->bits_per_coded_sample *
129 1 channels / 8;
130
131 1 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
132
133 1 return 0;
134 }
135
136 const FFInputFormat ff_sox_demuxer = {
137 .p.name = "sox",
138 .p.long_name = NULL_IF_CONFIG_SMALL("SoX (Sound eXchange) native"),
139 .read_probe = sox_probe,
140 .read_header = sox_read_header,
141 .read_packet = ff_pcm_read_packet,
142 .read_seek = ff_pcm_read_seek,
143 };
144