1/*
2 * Multipart JPEG format
3 * Copyright (c) 2000, 2001, 2002, 2003 Fabrice Bellard
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#include "avformat.h"
22
23/* Multipart JPEG */
24
25#define BOUNDARY_TAG "ffserver"
26
27static int mpjpeg_write_header(AVFormatContext *s)
28{
29    uint8_t buf1[256];
30
31    snprintf(buf1, sizeof(buf1), "--%s\r\n", BOUNDARY_TAG);
32    avio_write(s->pb, buf1, strlen(buf1));
33    avio_flush(s->pb);
34    return 0;
35}
36
37static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt)
38{
39    uint8_t buf1[256];
40
41    snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\r\n");
42    avio_write(s->pb, buf1, strlen(buf1));
43
44    snprintf(buf1, sizeof(buf1), "Content-length: %d\r\n\r\n", pkt->size);
45    avio_write(s->pb, buf1, strlen(buf1));
46    avio_write(s->pb, pkt->data, pkt->size);
47
48    snprintf(buf1, sizeof(buf1), "\r\n--%s\r\n", BOUNDARY_TAG);
49    avio_write(s->pb, buf1, strlen(buf1));
50    return 0;
51}
52
53static int mpjpeg_write_trailer(AVFormatContext *s)
54{
55    return 0;
56}
57
58AVOutputFormat ff_mpjpeg_muxer = {
59    .name              = "mpjpeg",
60    .long_name         = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"),
61    .mime_type         = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
62    .extensions        = "mjpg",
63    .audio_codec       = AV_CODEC_ID_NONE,
64    .video_codec       = AV_CODEC_ID_MJPEG,
65    .write_header      = mpjpeg_write_header,
66    .write_packet      = mpjpeg_write_packet,
67    .write_trailer     = mpjpeg_write_trailer,
68    .flags             = AVFMT_NOTIMESTAMPS,
69};
70