1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
/* Ported from libquicktime */
#include <stdlib.h>
#include <avdec_private.h>
#include <codecs.h>
#include <RTjpeg.h>
#define BLOCK_SIZE 16
#define PADD(x) ((x+BLOCK_SIZE-1)/BLOCK_SIZE)*BLOCK_SIZE
typedef struct
{
gavl_video_frame_t * frame;
RTjpeg_t * rtjpeg;
} rtjpeg_priv_t;
static int init_rtjpeg(bgav_stream_t * s)
{
rtjpeg_priv_t * priv;
priv = calloc(1, sizeof(*priv));
s->decoder_priv = priv;
priv->rtjpeg = RTjpeg_init();
s->data.video.format->frame_width = PADD(s->data.video.format->image_width);
s->data.video.format->frame_height = PADD(s->data.video.format->image_height);
s->data.video.format->pixelformat = GAVL_YUV_420_P;
priv->frame = gavl_video_frame_create(s->data.video.format);
gavl_dictionary_set_string(s->m, GAVL_META_FORMAT,
"RTjpeg");
return 1;
}
static gavl_source_status_t decode_rtjpeg(bgav_stream_t * s, gavl_video_frame_t * f)
{
rtjpeg_priv_t * priv;
bgav_packet_t * p = NULL;
gavl_source_status_t st;
priv = s->decoder_priv;
/* We assume one frame per packet */
if((st = bgav_stream_get_packet_read(s, &p)) != GAVL_SOURCE_OK)
return st;
/* Skip frame */
if(!f)
{
bgav_stream_done_packet_read(s, p);
return GAVL_SOURCE_OK;
}
RTjpeg_decompress(priv->rtjpeg, p->data, priv->frame->planes);
gavl_video_frame_copy(s->data.video.format,
f, priv->frame);
bgav_set_video_frame_from_packet(p, f);
bgav_stream_done_packet_read(s, p);
return GAVL_SOURCE_OK;
}
static void close_rtjpeg(bgav_stream_t * s)
{
rtjpeg_priv_t * priv;
priv = s->decoder_priv;
RTjpeg_close(priv->rtjpeg);
gavl_video_frame_destroy(priv->frame);
free(priv);
}
static bgav_video_decoder_t rtjpeg_decoder =
{
.name = "rtjpeg video decoder",
.fourccs = (uint32_t[]){ BGAV_MK_FOURCC('R', 'T', 'J', '0'), 0x00 },
.init = init_rtjpeg,
.decode = decode_rtjpeg,
.close = close_rtjpeg,
};
void bgav_init_video_decoders_rtjpeg()
{
bgav_video_decoder_register(&rtjpeg_decoder);
}
|
