1cabdff1aSopenharmony_ci/* 2cabdff1aSopenharmony_ci * Multipart JPEG format 3cabdff1aSopenharmony_ci * Copyright (c) 2000, 2001, 2002, 2003 Fabrice Bellard 4cabdff1aSopenharmony_ci * 5cabdff1aSopenharmony_ci * This file is part of FFmpeg. 6cabdff1aSopenharmony_ci * 7cabdff1aSopenharmony_ci * FFmpeg is free software; you can redistribute it and/or 8cabdff1aSopenharmony_ci * modify it under the terms of the GNU Lesser General Public 9cabdff1aSopenharmony_ci * License as published by the Free Software Foundation; either 10cabdff1aSopenharmony_ci * version 2.1 of the License, or (at your option) any later version. 11cabdff1aSopenharmony_ci * 12cabdff1aSopenharmony_ci * FFmpeg is distributed in the hope that it will be useful, 13cabdff1aSopenharmony_ci * but WITHOUT ANY WARRANTY; without even the implied warranty of 14cabdff1aSopenharmony_ci * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15cabdff1aSopenharmony_ci * Lesser General Public License for more details. 16cabdff1aSopenharmony_ci * 17cabdff1aSopenharmony_ci * You should have received a copy of the GNU Lesser General Public 18cabdff1aSopenharmony_ci * License along with FFmpeg; if not, write to the Free Software 19cabdff1aSopenharmony_ci * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20cabdff1aSopenharmony_ci */ 21cabdff1aSopenharmony_ci#include "libavutil/opt.h" 22cabdff1aSopenharmony_ci#include "avformat.h" 23cabdff1aSopenharmony_ci 24cabdff1aSopenharmony_ci/* Multipart JPEG */ 25cabdff1aSopenharmony_ci 26cabdff1aSopenharmony_ci#define BOUNDARY_TAG "ffmpeg" 27cabdff1aSopenharmony_ci 28cabdff1aSopenharmony_citypedef struct MPJPEGContext { 29cabdff1aSopenharmony_ci AVClass *class; 30cabdff1aSopenharmony_ci char *boundary_tag; 31cabdff1aSopenharmony_ci} MPJPEGContext; 32cabdff1aSopenharmony_ci 33cabdff1aSopenharmony_cistatic int mpjpeg_write_header(AVFormatContext *s) 34cabdff1aSopenharmony_ci{ 35cabdff1aSopenharmony_ci MPJPEGContext *mpj = s->priv_data; 36cabdff1aSopenharmony_ci avio_printf(s->pb, "--%s\r\n", mpj->boundary_tag); 37cabdff1aSopenharmony_ci return 0; 38cabdff1aSopenharmony_ci} 39cabdff1aSopenharmony_ci 40cabdff1aSopenharmony_cistatic int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt) 41cabdff1aSopenharmony_ci{ 42cabdff1aSopenharmony_ci MPJPEGContext *mpj = s->priv_data; 43cabdff1aSopenharmony_ci avio_printf(s->pb, "Content-type: image/jpeg\r\n"); 44cabdff1aSopenharmony_ci avio_printf(s->pb, "Content-length: %d\r\n\r\n", 45cabdff1aSopenharmony_ci pkt->size); 46cabdff1aSopenharmony_ci avio_write(s->pb, pkt->data, pkt->size); 47cabdff1aSopenharmony_ci 48cabdff1aSopenharmony_ci avio_printf(s->pb, "\r\n--%s\r\n", mpj->boundary_tag); 49cabdff1aSopenharmony_ci return 0; 50cabdff1aSopenharmony_ci} 51cabdff1aSopenharmony_ci 52cabdff1aSopenharmony_cistatic const AVOption options[] = { 53cabdff1aSopenharmony_ci { "boundary_tag", "Boundary tag", offsetof(MPJPEGContext, boundary_tag), AV_OPT_TYPE_STRING, {.str = BOUNDARY_TAG}, .flags = AV_OPT_FLAG_ENCODING_PARAM }, 54cabdff1aSopenharmony_ci { NULL }, 55cabdff1aSopenharmony_ci}; 56cabdff1aSopenharmony_ci 57cabdff1aSopenharmony_cistatic const AVClass mpjpeg_muxer_class = { 58cabdff1aSopenharmony_ci .class_name = "mpjpeg_muxer", 59cabdff1aSopenharmony_ci .item_name = av_default_item_name, 60cabdff1aSopenharmony_ci .option = options, 61cabdff1aSopenharmony_ci .version = LIBAVUTIL_VERSION_INT, 62cabdff1aSopenharmony_ci}; 63cabdff1aSopenharmony_ci 64cabdff1aSopenharmony_ciconst AVOutputFormat ff_mpjpeg_muxer = { 65cabdff1aSopenharmony_ci .name = "mpjpeg", 66cabdff1aSopenharmony_ci .long_name = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"), 67cabdff1aSopenharmony_ci .mime_type = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG, 68cabdff1aSopenharmony_ci .extensions = "mjpg", 69cabdff1aSopenharmony_ci .priv_data_size = sizeof(MPJPEGContext), 70cabdff1aSopenharmony_ci .audio_codec = AV_CODEC_ID_NONE, 71cabdff1aSopenharmony_ci .video_codec = AV_CODEC_ID_MJPEG, 72cabdff1aSopenharmony_ci .write_header = mpjpeg_write_header, 73cabdff1aSopenharmony_ci .write_packet = mpjpeg_write_packet, 74cabdff1aSopenharmony_ci .flags = AVFMT_NOTIMESTAMPS, 75cabdff1aSopenharmony_ci .priv_class = &mpjpeg_muxer_class, 76cabdff1aSopenharmony_ci}; 77