libavformat/mpjpeg.c

   1 /*
   2  * Multipart JPEG format
   3  * Copyright (c) 2000, 2001, 2002, 2003 Fabrice Bellard
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav 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  * Libav 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 Libav; 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 "avserver"
  26
  27 static int mpjpeg_write_header(AVFormatContext *s)
  28 {
  29     avio_printf(s->pb, "--%s\n", BOUNDARY_TAG);
  30     avio_flush(s->pb);
  31     return 0;
  32 }
  33
  34 static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt)
  35 {
  36     avio_printf(s->pb,
  37                 "Content-length: %i\n"
  38                 "Content-type: image/jpeg\n\n",
  39                 pkt->size);
  40     avio_write(s->pb, pkt->data, pkt->size);
  41
  42     avio_printf(s->pb, "\n--%s\n", BOUNDARY_TAG);
  43     return 0;
  44 }
  45
  46 static int mpjpeg_write_trailer(AVFormatContext *s)
  47 {
  48     return 0;
  49 }
  50
  51 AVOutputFormat ff_mpjpeg_muxer = {
  52     .name              = "mpjpeg",
  53     .long_name         = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"),
  54     .mime_type         = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
  55     .extensions        = "mjpg",
  56     .audio_codec       = AV_CODEC_ID_NONE,
  57     .video_codec       = AV_CODEC_ID_MJPEG,
  58     .write_header      = mpjpeg_write_header,
  59     .write_packet      = mpjpeg_write_packet,
  60     .write_trailer     = mpjpeg_write_trailer,
  61     .flags             = AVFMT_NOTIMESTAMPS,
  62 };