mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
|
/*
|
||
|
|
* IPU video demuxer
|
||
|
|
* Copyright (c) 2020 Paul B Mahol
|
||
|
|
*
|
||
|
|
* 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 "avformat.h"
|
||
|
|
#include "internal.h"
|
||
|
|
#include "avio_internal.h"
|
||
|
|
#include "rawdec.h"
|
||
|
|
|
||
|
|
#include "libavutil/intreadwrite.h"
|
||
|
|
#include "libavcodec/internal.h"
|
||
|
|
|
||
|
|
static int ipu_read_probe(const AVProbeData *p)
|
||
|
|
{
|
||
|
|
if (AV_RB32(p->buf) != MKBETAG('i', 'p', 'u', 'm'))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
if (AV_RL32(p->buf + 4) == 0)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
if (AV_RL16(p->buf + 8) == 0)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
if (AV_RL16(p->buf + 10) == 0)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
if (AV_RL32(p->buf + 12) == 0)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return AVPROBE_SCORE_MAX;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ipu_read_header(AVFormatContext *s)
|
||
|
|
{
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
AVStream *st = avformat_new_stream(s, NULL);
|
||
|
|
|
||
|
|
if (!st)
|
||
|
|
return AVERROR(ENOMEM);
|
||
|
|
avio_skip(pb, 8);
|
||
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
|
||
|
|
st->codecpar->codec_id = AV_CODEC_ID_IPU;
|
||
|
|
st->codecpar->width = avio_rl16(pb);
|
||
|
|
st->codecpar->height = avio_rl16(pb);
|
||
|
|
st->start_time = 0;
|
||
|
|
st->duration =
|
||
|
|
st->nb_frames = avio_rl32(pb);
|
||
|
|
st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
|
||
|
|
avpriv_set_pts_info(st, 64, 1, 25);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const AVClass ipu_demuxer_class = {
|
||
|
|
.class_name = "ipu demuxer",
|
||
|
|
.item_name = av_default_item_name,
|
||
|
|
.option = ff_raw_options,
|
||
|
|
.version = LIBAVUTIL_VERSION_INT,
|
||
|
|
};
|
||
|
|
|
||
|
|
AVInputFormat ff_ipu_demuxer = {
|
||
|
|
.name = "ipu",
|
||
|
|
.long_name = NULL_IF_CONFIG_SMALL("raw IPU Video"),
|
||
|
|
.read_probe = ipu_read_probe,
|
||
|
|
.read_header = ipu_read_header,
|
||
|
|
.read_packet = ff_raw_read_partial_packet,
|
||
|
|
.extensions = "ipu",
|
||
|
|
.flags = AVFMT_GENERIC_INDEX,
|
||
|
|
.raw_codec_id = AV_CODEC_ID_IPU,
|
||
|
|
.priv_data_size = sizeof(FFRawDemuxerContext),
|
||
|
|
.priv_class = &ipu_demuxer_class,
|
||
|
|
};
|