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[libav.git] / libav / jpegenc.c
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1/*
2 * Miscellaneous MJPEG based formats
3 * Copyright (c) 2000 Gerard Lantau.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19#include <stdlib.h>
20#include <stdio.h>
21#include <netinet/in.h>
22#include <string.h>
23#include "avformat.h"
24
25/* Multipart JPEG */
26
27#define BOUNDARY_TAG "ffserver"
28
29static int mpjpeg_write_header(AVFormatContext *s)
30{
31 UINT8 buf1[256];
32
33 snprintf(buf1, sizeof(buf1), "--%s\n", BOUNDARY_TAG);
34 put_buffer(&s->pb, buf1, strlen(buf1));
35 put_flush_packet(&s->pb);
36 return 0;
37}
38
39static int mpjpeg_write_packet(AVFormatContext *s,
40 int stream_index, UINT8 *buf, int size)
41{
42 UINT8 buf1[256];
43
44 snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\n\n");
45 put_buffer(&s->pb, buf1, strlen(buf1));
46 put_buffer(&s->pb, buf, size);
47
48 snprintf(buf1, sizeof(buf1), "\n--%s\n", BOUNDARY_TAG);
49 put_buffer(&s->pb, buf1, strlen(buf1));
50 put_flush_packet(&s->pb);
51 return 0;
52}
53
54static int mpjpeg_write_trailer(AVFormatContext *s)
55{
56 return 0;
57}
58
59AVFormat mpjpeg_format = {
60 "mpjpeg",
61 "Mime multipart JPEG format",
62 "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
63 "mjpg",
64 CODEC_ID_NONE,
65 CODEC_ID_MJPEG,
66 mpjpeg_write_header,
67 mpjpeg_write_packet,
68 mpjpeg_write_trailer,
69};
70
71
72/* single frame JPEG */
73
74static int jpeg_write_header(AVFormatContext *s)
75{
76 return 0;
77}
78
79static int jpeg_write_packet(AVFormatContext *s, int stream_index,
80 UINT8 *buf, int size)
81{
82 put_buffer(&s->pb, buf, size);
83 put_flush_packet(&s->pb);
84 return 1; /* no more data can be sent */
85}
86
87static int jpeg_write_trailer(AVFormatContext *s)
88{
89 return 0;
90}
91
92AVFormat jpeg_format = {
93 "jpeg",
94 "JPEG image",
95 "image/jpeg",
96 "jpg,jpeg",
97 CODEC_ID_NONE,
98 CODEC_ID_MJPEG,
99 jpeg_write_header,
100 jpeg_write_packet,
101 jpeg_write_trailer,
102};