FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/ads.c
Date: 2022-12-05 03:11:11
Exec Total Coverage
Lines: 3 36 8.3%
Functions: 1 3 33.3%
Branches: 1 20 5.0%

Line Branch Exec Source
1 /*
2 * ADS/SS2 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/channel_layout.h"
23 #include "avformat.h"
24 #include "internal.h"
25
26 6782 static int ads_probe(const AVProbeData *p)
27 {
28
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✓ Branch 1 taken 6782 times.
6782 if (memcmp(p->buf, "SShd", 4) ||
29 memcmp(p->buf+32, "SSbd", 4))
30 6782 return 0;
31
32 return AVPROBE_SCORE_MAX / 3 * 2;
33 }
34
35 static int ads_read_header(AVFormatContext *s)
36 {
37 int align, codec;
38 AVStream *st;
39 int64_t size;
40
41 st = avformat_new_stream(s, NULL);
42 if (!st)
43 return AVERROR(ENOMEM);
44
45 avio_skip(s->pb, 8);
46 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
47 codec = avio_rl32(s->pb);
48 st->codecpar->sample_rate = avio_rl32(s->pb);
49 if (st->codecpar->sample_rate <= 0)
50 return AVERROR_INVALIDDATA;
51 st->codecpar->ch_layout.nb_channels = avio_rl32(s->pb);
52 if (st->codecpar->ch_layout.nb_channels <= 0)
53 return AVERROR_INVALIDDATA;
54 align = avio_rl32(s->pb);
55 if (align <= 0 || align > INT_MAX / st->codecpar->ch_layout.nb_channels)
56 return AVERROR_INVALIDDATA;
57
58 if (codec == 1)
59 st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE_PLANAR;
60 else
61 st->codecpar->codec_id = AV_CODEC_ID_ADPCM_PSX;
62
63 st->codecpar->block_align = st->codecpar->ch_layout.nb_channels * align;
64 avio_skip(s->pb, 12);
65 size = avio_rl32(s->pb);
66 if (st->codecpar->codec_id == AV_CODEC_ID_ADPCM_PSX && size >= 0x40)
67 st->duration = (size - 0x40) / 16 / st->codecpar->ch_layout.nb_channels * 28;
68 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
69
70 return 0;
71 }
72
73 static int ads_read_packet(AVFormatContext *s, AVPacket *pkt)
74 {
75 AVCodecParameters *par = s->streams[0]->codecpar;
76 int ret;
77
78 ret = av_get_packet(s->pb, pkt, par->block_align);
79 pkt->stream_index = 0;
80 return ret;
81 }
82
83 const AVInputFormat ff_ads_demuxer = {
84 .name = "ads",
85 .long_name = NULL_IF_CONFIG_SMALL("Sony PS2 ADS"),
86 .read_probe = ads_probe,
87 .read_header = ads_read_header,
88 .read_packet = ads_read_packet,
89 .extensions = "ads,ss2",
90 };
91