FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/acm.c
Date: 2022-12-05 03:11:11
Exec Total Coverage
Lines: 3 22 13.6%
Functions: 1 2 50.0%
Branches: 1 10 10.0%

Line Branch Exec Source
1 /*
2 * ACM demuxer
3 * Copyright (c) 2015 Paul B Mahol
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/intreadwrite.h"
23 #include "avformat.h"
24 #include "demux.h"
25 #include "rawdec.h"
26 #include "internal.h"
27
28 6782 static int acm_probe(const AVProbeData *p)
29 {
30
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✗ Branch 1 not taken.
6782 if (AV_RB32(p->buf) != 0x97280301)
31 6782 return 0;
32
33 return AVPROBE_SCORE_MAX / 3 * 2;
34 }
35
36 static int acm_read_header(AVFormatContext *s)
37 {
38 AVStream *st;
39 int ret;
40
41 st = avformat_new_stream(s, NULL);
42 if (!st)
43 return AVERROR(ENOMEM);
44
45 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
46 st->codecpar->codec_id = AV_CODEC_ID_INTERPLAY_ACM;
47
48 ret = ff_get_extradata(s, st->codecpar, s->pb, 14);
49 if (ret < 0)
50 return ret;
51
52 st->codecpar->ch_layout.nb_channels = AV_RL16(st->codecpar->extradata + 8);
53 st->codecpar->sample_rate = AV_RL16(st->codecpar->extradata + 10);
54 if (st->codecpar->ch_layout.nb_channels <= 0 || st->codecpar->sample_rate <= 0)
55 return AVERROR_INVALIDDATA;
56 st->start_time = 0;
57 st->duration = AV_RL32(st->codecpar->extradata + 4) / st->codecpar->ch_layout.nb_channels;
58 ffstream(st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
59 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
60
61 return 0;
62 }
63
64 const AVInputFormat ff_acm_demuxer = {
65 .name = "acm",
66 .long_name = NULL_IF_CONFIG_SMALL("Interplay ACM"),
67 .read_probe = acm_probe,
68 .read_header = acm_read_header,
69 .read_packet = ff_raw_read_partial_packet,
70 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK | AVFMT_NOTIMESTAMPS,
71 .extensions = "acm",
72 .raw_codec_id = AV_CODEC_ID_INTERPLAY_ACM,
73 .priv_data_size = sizeof(FFRawDemuxerContext),
74 .priv_class = &ff_raw_demuxer_class,
75 };
76