mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
2.7 KiB
82 lines
2.7 KiB
/* |
|
* RAW PCM demuxers |
|
* Copyright (c) 2002 Fabrice Bellard |
|
* Copyright (c) 2022 Jack Bruienne |
|
* |
|
* 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/avstring.h" |
|
#include "avformat.h" |
|
#include "internal.h" |
|
#include "pcm.h" |
|
#include "libavutil/log.h" |
|
#include "libavutil/opt.h" |
|
#include "libavutil/avassert.h" |
|
|
|
typedef struct DFPWMAudioDemuxerContext { |
|
AVClass *class; |
|
int sample_rate; |
|
int channels; |
|
} DFPWMAudioDemuxerContext; |
|
|
|
static int dfpwm_read_header(AVFormatContext *s) |
|
{ |
|
DFPWMAudioDemuxerContext *s1 = s->priv_data; |
|
AVCodecParameters *par; |
|
AVStream *st; |
|
|
|
st = avformat_new_stream(s, NULL); |
|
if (!st) |
|
return AVERROR(ENOMEM); |
|
par = st->codecpar; |
|
|
|
par->codec_type = AVMEDIA_TYPE_AUDIO; |
|
par->codec_id = s->iformat->raw_codec_id; |
|
par->sample_rate = s1->sample_rate; |
|
par->ch_layout.nb_channels = s1->channels; |
|
par->bits_per_coded_sample = 1; |
|
par->block_align = 1; |
|
|
|
avpriv_set_pts_info(st, 64, 1, par->sample_rate); |
|
return 0; |
|
} |
|
|
|
static const AVOption dfpwm_options[] = { |
|
{ "sample_rate", "", offsetof(DFPWMAudioDemuxerContext, sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
|
{ "channels", "", offsetof(DFPWMAudioDemuxerContext, channels), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
|
{ NULL }, |
|
}; |
|
static const AVClass dfpwm_demuxer_class = { |
|
.class_name = "dfpwm demuxer", |
|
.item_name = av_default_item_name, |
|
.option = dfpwm_options, |
|
.version = LIBAVUTIL_VERSION_INT, |
|
}; |
|
|
|
const AVInputFormat ff_dfpwm_demuxer = { |
|
.name = "dfpwm", |
|
.long_name = NULL_IF_CONFIG_SMALL("raw DFPWM1a"), |
|
.priv_data_size = sizeof(DFPWMAudioDemuxerContext), |
|
.read_header = dfpwm_read_header, |
|
.read_packet = ff_pcm_read_packet, |
|
.read_seek = ff_pcm_read_seek, |
|
.flags = AVFMT_GENERIC_INDEX, |
|
.extensions = "dfpwm", |
|
.raw_codec_id = AV_CODEC_ID_DFPWM, |
|
.priv_class = &dfpwm_demuxer_class, |
|
};
|
|
|