FFmpeg
libavformat
img2_brender_pix.c
Go to the documentation of this file.
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/*
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* BRender PIX image demuxer
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* Copyright (c) 2014 Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "
demux.h
"
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#include "
img2.h
"
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#include "
libavutil/intreadwrite.h
"
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static
int
brender_read_probe
(
const
AVProbeData
*p)
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{
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static
const
uint8_t brender_magic[16] = {
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0,0,0,0x12,0,0,0,8,0,0,0,2,0,0,0,2
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};
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if
(memcmp(p->
buf
, brender_magic,
sizeof
(brender_magic)))
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return
0;
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if
(
AV_RB32
(p->
buf
+16) != 0x03 &&
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AV_RB32
(p->
buf
+16) != 0x3D)
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return
0;
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return
AVPROBE_SCORE_MAX
-10;
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}
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static
const
AVClass
image2_brender_pix_class
= {
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.
class_name
=
"brender_pix demuxer"
,
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.item_name =
av_default_item_name
,
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.option =
ff_img_options
,
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.version =
LIBAVUTIL_VERSION_INT
,
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};
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const
FFInputFormat
ff_image2_brender_pix_demuxer
= {
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.
p
.
name
=
"brender_pix"
,
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.p.long_name =
NULL_IF_CONFIG_SMALL
(
"BRender PIX image"
),
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.p.priv_class = &
image2_brender_pix_class
,
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.priv_data_size =
sizeof
(
VideoDemuxData
),
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.
read_probe
=
brender_read_probe
,
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.
read_header
=
ff_img_read_header
,
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.
read_packet
=
ff_img_read_packet
,
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.raw_codec_id =
AV_CODEC_ID_BRENDER_PIX
,
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};
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition:
avformat.h:463
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition:
avio_read_callback.c:42
intreadwrite.h
ff_image2_brender_pix_demuxer
const FFInputFormat ff_image2_brender_pix_demuxer
Definition:
img2_brender_pix.c:49
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition:
avformat.h:553
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition:
avformat.h:453
VideoDemuxData
Definition:
img2.h:41
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition:
version.h:85
read_header
static int read_header(FFV1Context *f)
Definition:
ffv1dec.c:538
AVClass
Describe the class of an AVClass context structure.
Definition:
log.h:75
ff_img_options
const AVOption ff_img_options[]
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition:
log.c:237
AVProbeData
This structure contains the data a format has to probe a file.
Definition:
avformat.h:451
image2_brender_pix_class
static const AVClass image2_brender_pix_class
Definition:
img2_brender_pix.c:42
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition:
internal.h:94
ff_img_read_header
int ff_img_read_header(AVFormatContext *s1)
Definition:
img2dec.c:189
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition:
bytestream.h:96
FFInputFormat::p
AVInputFormat p
The public AVInputFormat.
Definition:
demux.h:41
brender_read_probe
static int brender_read_probe(const AVProbeData *p)
Definition:
img2_brender_pix.c:26
img2.h
demux.h
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition:
log.h:80
read_probe
static int read_probe(const AVProbeData *p)
Definition:
cdg.c:30
FFInputFormat
Definition:
demux.h:37
AV_CODEC_ID_BRENDER_PIX
@ AV_CODEC_ID_BRENDER_PIX
Definition:
codec_id.h:230
ff_img_read_packet
int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
Definition:
img2dec.c:413
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