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libavformat
rawvideodec.c
Go to the documentation of this file.
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/*
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* RAW video demuxer
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* Copyright (c) 2001 Fabrice Bellard
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "
avformat.h
"
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#include "
rawdec.h
"
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static
int
rawvideo_read_packet
(
AVFormatContext
*s,
AVPacket
*pkt)
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{
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int
packet_size, ret,
width
,
height
;
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AVStream
*st = s->
streams
[0];
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width = st->
codec
->
width
;
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height = st->
codec
->
height
;
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packet_size =
avpicture_get_size
(st->
codec
->
pix_fmt
, width, height);
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if
(packet_size < 0)
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return
-1;
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ret=
av_get_packet
(s->
pb
, pkt, packet_size);
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pkt->
pts
=
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pkt->
dts
= pkt->
pos
/ packet_size;
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pkt->
stream_index
= 0;
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if
(ret < 0)
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return
ret;
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return
0;
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}
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#define OFFSET(x) offsetof(FFRawVideoDemuxerContext, x)
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#define DEC AV_OPT_FLAG_DECODING_PARAM
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static
const
AVOption
rawvideo_options
[] = {
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{
"video_size"
,
"A string describing frame size, such as 640x480 or hd720."
,
OFFSET
(
video_size
),
AV_OPT_TYPE_STRING
, {.str =
NULL
}, 0, 0,
DEC
},
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{
"pixel_format"
,
""
,
OFFSET
(pixel_format),
AV_OPT_TYPE_STRING
, {.str =
"yuv420p"
}, 0, 0,
DEC
},
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{
"framerate"
,
""
,
OFFSET
(framerate),
AV_OPT_TYPE_STRING
, {.str =
"25"
}, 0, 0,
DEC
},
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{
NULL
},
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};
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static
const
AVClass
rawvideo_demuxer_class
= {
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.
class_name
=
"rawvideo demuxer"
,
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.item_name =
av_default_item_name
,
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.option =
rawvideo_options
,
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.version =
LIBAVUTIL_VERSION_INT
,
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};
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AVInputFormat
ff_rawvideo_demuxer
= {
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.
name
=
"rawvideo"
,
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.long_name =
NULL_IF_CONFIG_SMALL
(
"raw video format"
),
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.priv_data_size =
sizeof
(
FFRawVideoDemuxerContext
),
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.
read_header
=
ff_raw_read_header
,
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.
read_packet
=
rawvideo_read_packet
,
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.
flags
=
AVFMT_GENERIC_INDEX
,
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.extensions =
"yuv,cif,qcif,rgb"
,
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.value =
CODEC_ID_RAWVIDEO
,
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.priv_class = &rawvideo_demuxer_class,
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};