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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/*
* Image format
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2004 Michael Niedermayer
*
* 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 "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "libavutil/opt.h"
typedef struct {
const AVClass *class; /**< Class for private options. */
int img_number;
int is_pipe;
int split_planes; /**< use independent file for each Y, U, V plane */
char path[1024];
int updatefirst;
} VideoMuxData;
static int write_header(AVFormatContext *s)
{
VideoMuxData *img = s->priv_data;
const char *str;
av_strlcpy(img->path, s->filename, sizeof(img->path));
/* find format */
if (s->oformat->flags & AVFMT_NOFILE)
img->is_pipe = 0;
else
img->is_pipe = 1;
str = strrchr(img->path, '.');
img->split_planes = str && !av_strcasecmp(str + 1, "y");
return 0;
}
static int write_packet(AVFormatContext *s, AVPacket *pkt)
{
VideoMuxData *img = s->priv_data;
AVIOContext *pb[3];
char filename[1024];
AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
int i;
if (!img->is_pipe) {
if (av_get_frame_filename(filename, sizeof(filename),
img->path, img->img_number) < 0 && img->img_number>1 && !img->updatefirst) {
av_log(s, AV_LOG_ERROR,
"Could not get frame filename number %d from pattern '%s'\n",
img->img_number, img->path);
return AVERROR(EINVAL);
}
for(i=0; i<3; i++){
if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL) < 0) {
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
return AVERROR(EIO);
}
if(!img->split_planes)
break;
filename[ strlen(filename) - 1 ]= 'U' + i;
}
} else {
pb[0] = s->pb;
}
if(img->split_planes){
int ysize = codec->width * codec->height;
avio_write(pb[0], pkt->data , ysize);
avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
avio_flush(pb[1]);
avio_flush(pb[2]);
avio_close(pb[1]);
avio_close(pb[2]);
}else{
if(ff_guess_image2_codec(s->filename) == CODEC_ID_JPEG2000){
AVStream *st = s->streams[0];
if(st->codec->extradata_size > 8 &&
AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
goto error;
avio_wb32(pb[0], 12);
ffio_wfourcc(pb[0], "jP ");
avio_wb32(pb[0], 0x0D0A870A); // signature
avio_wb32(pb[0], 20);
ffio_wfourcc(pb[0], "ftyp");
ffio_wfourcc(pb[0], "jp2 ");
avio_wb32(pb[0], 0);
ffio_wfourcc(pb[0], "jp2 ");
avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
}else if(pkt->size >= 8 && AV_RB32(pkt->data) == 0xFF4FFF51){
//jpeg2000 codestream
}else if(pkt->size < 8 ||
(!st->codec->extradata_size &&
AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
error:
av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream %X\n", AV_RB32(pkt->data));
return -1;
}
}
avio_write(pb[0], pkt->data, pkt->size);
}
avio_flush(pb[0]);
if (!img->is_pipe) {
avio_close(pb[0]);
}
img->img_number++;
return 0;
}
#define OFFSET(x) offsetof(VideoMuxData, x)
#define ENC AV_OPT_FLAG_ENCODING_PARAM
static const AVOption muxoptions[] = {
{ "updatefirst", "", OFFSET(updatefirst), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, ENC },
{ "start_number", "first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, {.dbl = 1}, 1, INT_MAX, ENC },
{ NULL },
};
#if CONFIG_IMAGE2_MUXER
static const AVClass img2mux_class = {
.class_name = "image2 muxer",
.item_name = av_default_item_name,
.option = muxoptions,
.version = LIBAVUTIL_VERSION_INT,
};
AVOutputFormat ff_image2_muxer = {
.name = "image2",
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
.extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
"ppm,sgi,tga,tif,tiff,jp2,j2c,xwd,sun,ras,rs,im1,im8,im24,"
"sunras,xbm",
.priv_data_size = sizeof(VideoMuxData),
.video_codec = CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
.priv_class = &img2mux_class,
};
#endif
#if CONFIG_IMAGE2PIPE_MUXER
AVOutputFormat ff_image2pipe_muxer = {
.name = "image2pipe",
.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
.priv_data_size = sizeof(VideoMuxData),
.video_codec = CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
};
#endif
|
