FFmpeg
img2_brender_pix.c
Go to the documentation of this file.
1 /*
2  * BRender PIX image demuxer
3  * Copyright (c) 2014 Michael Niedermayer
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "img2.h"
23 #include "libavutil/intreadwrite.h"
24 
25 static int brender_read_probe(const AVProbeData *p)
26 {
27  static const uint8_t brender_magic[16] = {
28  0,0,0,0x12,0,0,0,8,0,0,0,2,0,0,0,2
29  };
30 
31  if (memcmp(p->buf, brender_magic, sizeof(brender_magic)))
32  return 0;
33 
34  if (AV_RB32(p->buf+16) != 0x03 &&
35  AV_RB32(p->buf+16) != 0x3D)
36  return 0;
37 
38  return AVPROBE_SCORE_MAX-10;
39 }
40 
42  .class_name = "brender_pix demuxer",
43  .item_name = av_default_item_name,
44  .option = ff_img_options,
45  .version = LIBAVUTIL_VERSION_INT,
46 };
47 
49  .name = "brender_pix",
50  .long_name = NULL_IF_CONFIG_SMALL("BRender PIX image"),
51  .priv_data_size = sizeof(VideoDemuxData),
55  .raw_codec_id = AV_CODEC_ID_BRENDER_PIX,
56  .priv_class = &image2_brender_pix_class,
57 };
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
const AVOption ff_img_options[]
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:72
static int brender_read_probe(const AVProbeData *p)
uint8_t
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:87
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
AVInputFormat ff_image2_brender_pix_demuxer
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:530
int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
Definition: img2dec.c:377
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
Describe the class of an AVClass context structure.
Definition: log.h:67
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:458
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:654
static const AVClass image2_brender_pix_class
int ff_img_read_header(AVFormatContext *s1)
Definition: img2dec.c:182