FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/soxenc.c
Date: 2024-03-28 14:59:00
Exec Total Coverage
Lines: 31 43 72.1%
Functions: 2 2 100.0%
Branches: 5 12 41.7%

Line Branch Exec Source
1 /*
2 * SoX native format muxer
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 muxer
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 "avformat.h"
36 #include "avio_internal.h"
37 #include "mux.h"
38 #include "rawenc.h"
39 #include "sox.h"
40
41 typedef struct SoXContext {
42 int64_t header_size;
43 } SoXContext;
44
45 1 static int sox_write_header(AVFormatContext *s)
46 {
47 1 SoXContext *sox = s->priv_data;
48 1 AVIOContext *pb = s->pb;
49 1 AVCodecParameters *par = s->streams[0]->codecpar;
50 AVDictionaryEntry *comment;
51 1 size_t comment_len = 0, comment_size;
52
53 1 comment = av_dict_get(s->metadata, "comment", NULL, 0);
54
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1 if (comment)
55 comment_len = strlen(comment->value);
56 1 comment_size = FFALIGN(comment_len, 8);
57
58 1 sox->header_size = SOX_FIXED_HDR + comment_size;
59
60
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1 if (par->codec_id == AV_CODEC_ID_PCM_S32LE) {
61 1 ffio_wfourcc(pb, ".SoX");
62 1 avio_wl32(pb, sox->header_size);
63 1 avio_wl64(pb, 0); /* number of samples */
64 1 avio_wl64(pb, av_double2int(par->sample_rate));
65 1 avio_wl32(pb, par->ch_layout.nb_channels);
66 1 avio_wl32(pb, comment_size);
67 } else if (par->codec_id == AV_CODEC_ID_PCM_S32BE) {
68 ffio_wfourcc(pb, "XoS.");
69 avio_wb32(pb, sox->header_size);
70 avio_wb64(pb, 0); /* number of samples */
71 avio_wb64(pb, av_double2int(par->sample_rate));
72 avio_wb32(pb, par->ch_layout.nb_channels);
73 avio_wb32(pb, comment_size);
74 } else {
75 av_log(s, AV_LOG_ERROR, "invalid codec; use pcm_s32le or pcm_s32be\n");
76 return AVERROR(EINVAL);
77 }
78
79
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1 if (comment_len)
80 avio_write(pb, comment->value, comment_len);
81
82 1 ffio_fill(pb, 0, comment_size - comment_len);
83
84 1 return 0;
85 }
86
87 1 static int sox_write_trailer(AVFormatContext *s)
88 {
89 1 SoXContext *sox = s->priv_data;
90 1 AVIOContext *pb = s->pb;
91 1 AVCodecParameters *par = s->streams[0]->codecpar;
92
93
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1 if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
94 /* update number of samples */
95 1 int64_t file_size = avio_tell(pb);
96 1 int64_t num_samples = (file_size - sox->header_size - 4LL) >> 2LL;
97 1 avio_seek(pb, 8, SEEK_SET);
98
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1 if (par->codec_id == AV_CODEC_ID_PCM_S32LE) {
99 1 avio_wl64(pb, num_samples);
100 } else
101 avio_wb64(pb, num_samples);
102 1 avio_seek(pb, file_size, SEEK_SET);
103 }
104
105 1 return 0;
106 }
107
108 const FFOutputFormat ff_sox_muxer = {
109 .p.name = "sox",
110 .p.long_name = NULL_IF_CONFIG_SMALL("SoX (Sound eXchange) native"),
111 .p.extensions = "sox",
112 .priv_data_size = sizeof(SoXContext),
113 .p.audio_codec = AV_CODEC_ID_PCM_S32LE,
114 .p.video_codec = AV_CODEC_ID_NONE,
115 .p.subtitle_codec = AV_CODEC_ID_NONE,
116 .write_header = sox_write_header,
117 .write_packet = ff_raw_write_packet,
118 .write_trailer = sox_write_trailer,
119 .p.flags = AVFMT_NOTIMESTAMPS,
120 .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
121 };
122