3 * Copyright (c) 2001 Fabrice Bellard (original AU code)
4 * Copyright (c) 2010 Rafael Carre
6 * This file is part of FFmpeg.
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.
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.
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
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/intreadwrite.h"
30 static int rso_read_header(AVFormatContext
*s
)
32 AVIOContext
*pb
= s
->pb
;
41 avio_rb16(pb
); /* play mode ? (0x0000 = don't loop) */
43 codec
= ff_codec_get_id(ff_codec_rso_tags
, id
);
45 if (codec
== AV_CODEC_ID_ADPCM_IMA_WAV
) {
46 avpriv_report_missing_feature(s
, "ADPCM in RSO");
47 return AVERROR_PATCHWELCOME
;
50 bps
= av_get_bits_per_sample(codec
);
52 avpriv_request_sample(s
, "Unknown bits per sample");
53 return AVERROR_PATCHWELCOME
;
56 /* now we are ready: build format streams */
57 st
= avformat_new_stream(s
, NULL
);
59 return AVERROR(ENOMEM
);
61 st
->duration
= (size
* 8) / bps
;
62 st
->codec
->codec_type
= AVMEDIA_TYPE_AUDIO
;
63 st
->codec
->codec_tag
= id
;
64 st
->codec
->codec_id
= codec
;
65 st
->codec
->channels
= 1;
66 st
->codec
->channel_layout
= AV_CH_LAYOUT_MONO
;
67 st
->codec
->sample_rate
= rate
;
68 st
->codec
->block_align
= 1;
70 avpriv_set_pts_info(st
, 64, 1, rate
);
75 AVInputFormat ff_rso_demuxer
= {
77 .long_name
= NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
79 .read_header
= rso_read_header
,
80 .read_packet
= ff_pcm_read_packet
,
81 .read_seek
= ff_pcm_read_seek
,
82 .codec_tag
= (const AVCodecTag
* const []){ff_codec_rso_tags
, 0},