libavformat/mpjpeg.c

   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 "avformat.h"
  22
  23 /* Multipart JPEG */
  24
  25 #define BOUNDARY_TAG "ffserver"
  26
  27 static int mpjpeg_write_header(AVFormatContext *s)
  28 {
  29     uint8_t buf1[256];
  30
  31     snprintf(buf1, sizeof(buf1), "--%s\n", BOUNDARY_TAG);
  32     put_buffer(s->pb, buf1, strlen(buf1));
  33     put_flush_packet(s->pb);
  34     return 0;
  35 }
  36
  37 static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt)
  38 {
  39     uint8_t buf1[256];
  40
  41     snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\n\n");
  42     put_buffer(s->pb, buf1, strlen(buf1));
  43     put_buffer(s->pb, pkt->data, pkt->size);
  44
  45     snprintf(buf1, sizeof(buf1), "\n--%s\n", BOUNDARY_TAG);
  46     put_buffer(s->pb, buf1, strlen(buf1));
  47     put_flush_packet(s->pb);
  48     return 0;
  49 }
  50
  51 static int mpjpeg_write_trailer(AVFormatContext *s)
  52 {
  53     return 0;
  54 }
  55
  56 AVOutputFormat mpjpeg_muxer = {
  57     "mpjpeg",
  58     NULL_IF_CONFIG_SMALL("MIME multipart JPEG format"),
  59     "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
  60     "mjpg",
  61     0,
  62     CODEC_ID_NONE,
  63     CODEC_ID_MJPEG,
  64     mpjpeg_write_header,
  65     mpjpeg_write_packet,
  66     mpjpeg_write_trailer,
  67 };