libavformat/rtp_asf.c

   1 /*
   2  * Microsoft RTP/ASF support.
   3  * Copyright (c) 2008 Ronald S. Bultje
   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
  22 /**
  23  * @file libavformat/rtp_asf.c
  24  * @brief Microsoft RTP/ASF support
  25  * @author Ronald S. Bultje <rbultje@ronald.bitfreak.net>
  26  */
  27
  28 #include <libavutil/base64.h>
  29 #include <libavutil/avstring.h>
  30 #include "rtp_asf.h"
  31 #include "rtsp.h"
  32 #include "asf.h"
  33
  34 void ff_wms_parse_sdp_a_line(AVFormatContext *s, const char *p)
  35 {
  36     if (av_strstart(p, "pgmpu:data:application/vnd.ms.wms-hdr.asfv1;base64,", &p)) {
  37         ByteIOContext pb;
  38         RTSPState *rt = s->priv_data;
  39         int len = strlen(p) * 6 / 8;
  40         char *buf = av_mallocz(len);
  41         av_base64_decode(buf, p, len);
  42
  43         init_put_byte(&pb, buf, len, 0, NULL, NULL, NULL, NULL);
  44         if (rt->asf_ctx) {
  45             av_close_input_stream(rt->asf_ctx);
  46             rt->asf_ctx = NULL;
  47         }
  48         av_open_input_stream(&rt->asf_ctx, &pb, "", &asf_demuxer, NULL);
  49         av_free(buf);
  50         rt->asf_ctx->pb = NULL;
  51     }
  52 }