mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
b76e878f5b
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com> Signed-off-by: James Almer <jamrial@gmail.com>
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
|
|
* RSO demuxer
|
|
* Copyright (c) 2001 Fabrice Bellard (original AU code)
|
|
* Copyright (c) 2010 Rafael Carre
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/channel_layout.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "pcm.h"
|
|
#include "rso.h"
|
|
|
|
static int rso_read_header(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
int id, rate, bps;
|
|
unsigned int size;
|
|
enum AVCodecID codec;
|
|
AVStream *st;
|
|
|
|
id = avio_rb16(pb);
|
|
size = avio_rb16(pb);
|
|
rate = avio_rb16(pb);
|
|
avio_rb16(pb); /* play mode ? (0x0000 = don't loop) */
|
|
|
|
codec = ff_codec_get_id(ff_codec_rso_tags, id);
|
|
|
|
if (codec == AV_CODEC_ID_ADPCM_IMA_WAV) {
|
|
avpriv_report_missing_feature(s, "ADPCM in RSO");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
bps = av_get_bits_per_sample(codec);
|
|
if (!bps) {
|
|
avpriv_request_sample(s, "Unknown bits per sample");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
/* now we are ready: build format streams */
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
|
|
st->duration = (size * 8) / bps;
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codecpar->codec_tag = id;
|
|
st->codecpar->codec_id = codec;
|
|
st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
|
|
st->codecpar->sample_rate = rate;
|
|
st->codecpar->block_align = 1;
|
|
|
|
avpriv_set_pts_info(st, 64, 1, rate);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const AVInputFormat ff_rso_demuxer = {
|
|
.name = "rso",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
|
|
.extensions = "rso",
|
|
.read_header = rso_read_header,
|
|
.read_packet = ff_pcm_read_packet,
|
|
.read_seek = ff_pcm_read_seek,
|
|
.codec_tag = ff_rso_codec_tags_list,
|
|
};
|