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2ba45a60 DM |
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 | */ | |
f6fa7814 | 21 | #include "libavutil/opt.h" |
2ba45a60 DM |
22 | #include "avformat.h" |
23 | ||
24 | /* Multipart JPEG */ | |
25 | ||
26 | #define BOUNDARY_TAG "ffserver" | |
27 | ||
f6fa7814 DM |
28 | typedef struct MPJPEGContext { |
29 | AVClass *class; | |
30 | char *boundary_tag; | |
31 | } MPJPEGContext; | |
32 | ||
2ba45a60 DM |
33 | static int mpjpeg_write_header(AVFormatContext *s) |
34 | { | |
f6fa7814 | 35 | MPJPEGContext *mpj = s->priv_data; |
2ba45a60 DM |
36 | uint8_t buf1[256]; |
37 | ||
f6fa7814 | 38 | snprintf(buf1, sizeof(buf1), "--%s\r\n", mpj->boundary_tag); |
2ba45a60 DM |
39 | avio_write(s->pb, buf1, strlen(buf1)); |
40 | avio_flush(s->pb); | |
41 | return 0; | |
42 | } | |
43 | ||
44 | static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt) | |
45 | { | |
f6fa7814 | 46 | MPJPEGContext *mpj = s->priv_data; |
2ba45a60 DM |
47 | uint8_t buf1[256]; |
48 | ||
49 | snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\r\n"); | |
50 | avio_write(s->pb, buf1, strlen(buf1)); | |
51 | ||
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); | |
55 | ||
f6fa7814 | 56 | snprintf(buf1, sizeof(buf1), "\r\n--%s\r\n", mpj->boundary_tag); |
2ba45a60 DM |
57 | avio_write(s->pb, buf1, strlen(buf1)); |
58 | return 0; | |
59 | } | |
60 | ||
61 | static int mpjpeg_write_trailer(AVFormatContext *s) | |
62 | { | |
63 | return 0; | |
64 | } | |
65 | ||
f6fa7814 DM |
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 }, | |
68 | { NULL }, | |
69 | }; | |
70 | ||
71 | static const AVClass mpjpeg_muxer_class = { | |
72 | .class_name = "mpjpeg_muxer", | |
73 | .item_name = av_default_item_name, | |
74 | .option = options, | |
75 | .version = LIBAVUTIL_VERSION_INT, | |
76 | }; | |
77 | ||
2ba45a60 DM |
78 | AVOutputFormat ff_mpjpeg_muxer = { |
79 | .name = "mpjpeg", | |
80 | .long_name = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"), | |
81 | .mime_type = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG, | |
82 | .extensions = "mjpg", | |
f6fa7814 | 83 | .priv_data_size = sizeof(MPJPEGContext), |
2ba45a60 DM |
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, | |
f6fa7814 | 90 | .priv_class = &mpjpeg_muxer_class, |
2ba45a60 | 91 | }; |