FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/rsodec.c
Date: 2024-03-29 01:21:52
Exec Total Coverage
Lines: 21 26 80.8%
Functions: 1 1 100.0%
Branches: 3 6 50.0%

Line Branch Exec Source
1 /*
2 * RSO demuxer
3 * Copyright (c) 2001 Fabrice Bellard (original AU code)
4 * Copyright (c) 2010 Rafael Carre
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/intreadwrite.h"
25 #include "avformat.h"
26 #include "demux.h"
27 #include "internal.h"
28 #include "pcm.h"
29 #include "rso.h"
30
31 1 static int rso_read_header(AVFormatContext *s)
32 {
33 1 AVIOContext *pb = s->pb;
34 int id, rate, bps;
35 unsigned int size;
36 enum AVCodecID codec;
37 AVStream *st;
38
39 1 id = avio_rb16(pb);
40 1 size = avio_rb16(pb);
41 1 rate = avio_rb16(pb);
42 1 avio_rb16(pb); /* play mode ? (0x0000 = don't loop) */
43
44 1 codec = ff_codec_get_id(ff_codec_rso_tags, id);
45
46
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1 if (codec == AV_CODEC_ID_ADPCM_IMA_WAV) {
47 avpriv_report_missing_feature(s, "ADPCM in RSO");
48 return AVERROR_PATCHWELCOME;
49 }
50
51 1 bps = av_get_bits_per_sample(codec);
52
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1 if (!bps) {
53 avpriv_request_sample(s, "Unknown bits per sample");
54 return AVERROR_PATCHWELCOME;
55 }
56
57 /* now we are ready: build format streams */
58 1 st = avformat_new_stream(s, NULL);
59
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1 if (!st)
60 return AVERROR(ENOMEM);
61
62 1 st->duration = (size * 8) / bps;
63 1 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
64 1 st->codecpar->codec_tag = id;
65 1 st->codecpar->codec_id = codec;
66 1 st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
67 1 st->codecpar->sample_rate = rate;
68 1 st->codecpar->block_align = 1;
69
70 1 avpriv_set_pts_info(st, 64, 1, rate);
71
72 1 return 0;
73 }
74
75 const FFInputFormat ff_rso_demuxer = {
76 .p.name = "rso",
77 .p.long_name = NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
78 .p.extensions = "rso",
79 .p.codec_tag = ff_rso_codec_tags_list,
80 .read_header = rso_read_header,
81 .read_packet = ff_pcm_read_packet,
82 .read_seek = ff_pcm_read_seek,
83 };
84