2 * Multipart JPEG format
3 * Copyright (c) 2000, 2001, 2002, 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/opt.h"
26 #define BOUNDARY_TAG "ffserver"
28 typedef struct MPJPEGContext
{
33 static int mpjpeg_write_header(AVFormatContext
*s
)
35 MPJPEGContext
*mpj
= s
->priv_data
;
38 snprintf(buf1
, sizeof(buf1
), "--%s\r\n", mpj
->boundary_tag
);
39 avio_write(s
->pb
, buf1
, strlen(buf1
));
44 static int mpjpeg_write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
46 MPJPEGContext
*mpj
= s
->priv_data
;
49 snprintf(buf1
, sizeof(buf1
), "Content-type: image/jpeg\r\n");
50 avio_write(s
->pb
, buf1
, strlen(buf1
));
52 snprintf(buf1
, sizeof(buf1
), "Content-length: %d\r\n\r\n", pkt
->size
);
53 avio_write(s
->pb
, buf1
, strlen(buf1
));
54 avio_write(s
->pb
, pkt
->data
, pkt
->size
);
56 snprintf(buf1
, sizeof(buf1
), "\r\n--%s\r\n", mpj
->boundary_tag
);
57 avio_write(s
->pb
, buf1
, strlen(buf1
));
61 static int mpjpeg_write_trailer(AVFormatContext
*s
)
66 static const AVOption options
[] = {
67 { "boundary_tag", "Boundary tag", offsetof(MPJPEGContext
, boundary_tag
), AV_OPT_TYPE_STRING
, {.str
= BOUNDARY_TAG
}, .flags
= AV_OPT_FLAG_ENCODING_PARAM
},
71 static const AVClass mpjpeg_muxer_class
= {
72 .class_name
= "mpjpeg_muxer",
73 .item_name
= av_default_item_name
,
75 .version
= LIBAVUTIL_VERSION_INT
,
78 AVOutputFormat ff_mpjpeg_muxer
= {
80 .long_name
= NULL_IF_CONFIG_SMALL("MIME multipart JPEG"),
81 .mime_type
= "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG
,
83 .priv_data_size
= sizeof(MPJPEGContext
),
84 .audio_codec
= AV_CODEC_ID_NONE
,
85 .video_codec
= AV_CODEC_ID_MJPEG
,
86 .write_header
= mpjpeg_write_header
,
87 .write_packet
= mpjpeg_write_packet
,
88 .write_trailer
= mpjpeg_write_trailer
,
89 .flags
= AVFMT_NOTIMESTAMPS
,
90 .priv_class
= &mpjpeg_muxer_class
,