Add RTP/ASF header parsing, which is part of the SDP of these streams. See

patch discussion in "[PATCH] RTSP-MS 10/15: ASF header parsing" thread.

Originally committed as revision 18023 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 52 insertions, 0 deletions

diff --git a/libavformat/rtp_asf.c b/libavformat/rtp_asf.c
new file mode 100644
index 0000000000..0bc5c9e72c
--- /dev/null
+++ b/libavformat/rtp_asf.c
@@ -0,0 +1,52 @@
+/*
+ * Microsoft RTP/ASF support.
+ * Copyright (c) 2008 Ronald S. Bultje
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file rtp-asf.c
+ * @brief Microsoft RTP/ASF support
+ * @author Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ */
+
+#include <libavutil/base64.h>
+#include <libavutil/avstring.h>
+#include "rtp_asf.h"
+#include "rtsp.h"
+#include "asf.h"
+
+void ff_wms_parse_sdp_a_line(AVFormatContext *s, const char *p)
+{
+    if (av_strstart(p, "pgmpu:data:application/vnd.ms.wms-hdr.asfv1;base64,", &p)) {
+        ByteIOContext pb;
+        RTSPState *rt = s->priv_data;
+        int len = strlen(p) * 6 / 8;
+        char *buf = av_mallocz(len);
+        av_base64_decode(buf, p, len);
+
+        init_put_byte(&pb, buf, len, 0, NULL, NULL, NULL, NULL);
+        if (rt->asf_ctx) {
+            av_close_input_stream(rt->asf_ctx);
+            rt->asf_ctx = NULL;
+        }
+        av_open_input_stream(&rt->asf_ctx, &pb, "", &asf_demuxer, NULL);
+        av_free(buf);
+        rt->asf_ctx->pb = NULL;
+    }
+}