FFmpeg
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mpjpeg.c
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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 
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 
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  avio_flush(s->pb);
51  return 0;
52 }
53 
55 {
56  return 0;
57 }
58 
60  .name = "mpjpeg",
61  .long_name = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"),
62  .mime_type = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
63  .extensions = "mjpg",
64  .audio_codec = AV_CODEC_ID_NONE,
65  .video_codec = AV_CODEC_ID_MJPEG,
66  .write_header = mpjpeg_write_header,
67  .write_packet = mpjpeg_write_packet,
68  .write_trailer = mpjpeg_write_trailer,
69 };