blob: 3904ccb2b43f3ebf8e701d61801cab42d8de1786
| 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 "libavutil/opt.h" |
| 22 | #include "avformat.h" |
| 23 | |
| 24 | /* Multipart JPEG */ |
| 25 | |
| 26 | #define BOUNDARY_TAG "ffserver" |
| 27 | |
| 28 | typedef struct MPJPEGContext { |
| 29 | AVClass *class; |
| 30 | char *boundary_tag; |
| 31 | } MPJPEGContext; |
| 32 | |
| 33 | static int mpjpeg_write_header(AVFormatContext *s) |
| 34 | { |
| 35 | MPJPEGContext *mpj = s->priv_data; |
| 36 | avio_printf(s->pb, "--%s\r\n", mpj->boundary_tag); |
| 37 | avio_flush(s->pb); |
| 38 | return 0; |
| 39 | } |
| 40 | |
| 41 | static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt) |
| 42 | { |
| 43 | MPJPEGContext *mpj = s->priv_data; |
| 44 | avio_printf(s->pb, "Content-type: image/jpeg\r\n"); |
| 45 | avio_printf(s->pb, "Content-length: %d\r\n\r\n", |
| 46 | pkt->size); |
| 47 | avio_write(s->pb, pkt->data, pkt->size); |
| 48 | |
| 49 | avio_printf(s->pb, "\r\n--%s\r\n", mpj->boundary_tag); |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | static int mpjpeg_write_trailer(AVFormatContext *s) |
| 54 | { |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static const AVOption options[] = { |
| 59 | { "boundary_tag", "Boundary tag", offsetof(MPJPEGContext, boundary_tag), AV_OPT_TYPE_STRING, {.str = BOUNDARY_TAG}, .flags = AV_OPT_FLAG_ENCODING_PARAM }, |
| 60 | { NULL }, |
| 61 | }; |
| 62 | |
| 63 | static const AVClass mpjpeg_muxer_class = { |
| 64 | .class_name = "mpjpeg_muxer", |
| 65 | .item_name = av_default_item_name, |
| 66 | .option = options, |
| 67 | .version = LIBAVUTIL_VERSION_INT, |
| 68 | }; |
| 69 | |
| 70 | AVOutputFormat ff_mpjpeg_muxer = { |
| 71 | .name = "mpjpeg", |
| 72 | .long_name = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"), |
| 73 | .mime_type = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG, |
| 74 | .extensions = "mjpg", |
| 75 | .priv_data_size = sizeof(MPJPEGContext), |
| 76 | .audio_codec = AV_CODEC_ID_NONE, |
| 77 | .video_codec = AV_CODEC_ID_MJPEG, |
| 78 | .write_header = mpjpeg_write_header, |
| 79 | .write_packet = mpjpeg_write_packet, |
| 80 | .write_trailer = mpjpeg_write_trailer, |
| 81 | .flags = AVFMT_NOTIMESTAMPS, |
| 82 | .priv_class = &mpjpeg_muxer_class, |
| 83 | }; |
| 84 |