Assign the x-pf-asf payload string to be decoded by rtp_asf.c, and add a

SDP line handler that parses the streamID in the SDP so that ASF stream
data can be matched to their respective streams in the RTSP demuxer. See
"[PATCH] RTSP-MS 12/15: ASF payload support" thread on mailinglist.



git-svn-id: file:///var/local/repositories/ffmpeg/trunk@18061 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/rtp_asf.c

@@ -27,6 +27,7 @@
 
 #include <libavutil/base64.h>
 #include <libavutil/avstring.h>
+#include "rtp.h"
 #include "rtp_asf.h"
 #include "rtsp.h"
 #include "asf.h"
@@ -50,3 +51,41 @@ void ff_wms_parse_sdp_a_line(AVFormatContext *s, const char *p)
         rt->asf_ctx->pb = NULL;
     }
 }
+
+static int
+asfrtp_parse_sdp_line (AVFormatContext *s, int stream_index,
+                       PayloadContext *asf, const char *line)
+{
+    if (av_strstart(line, "stream:", &line)) {
+        RTSPState *rt = s->priv_data;
+
+        s->streams[stream_index]->id = strtol(line, NULL, 10);
+
+        if (rt->asf_ctx) {
+            int i;
+
+            for (i = 0; i < rt->asf_ctx->nb_streams; i++) {
+                if (s->streams[stream_index]->id == rt->asf_ctx->streams[i]->id) {
+                    *s->streams[stream_index]->codec =
+                        *rt->asf_ctx->streams[i]->codec;
+                    rt->asf_ctx->streams[i]->codec->extradata_size = 0;
+                    rt->asf_ctx->streams[i]->codec->extradata = NULL;
+                    av_set_pts_info(s->streams[stream_index], 32, 1, 1000);
+                }
+           }
+        }
+    }
+
+    return 0;
+}
+
+#define RTP_ASF_HANDLER(n, s, t) \
+RTPDynamicProtocolHandler ff_ms_rtp_ ## n ## _handler = { \
+    s, \
+    t, \
+    CODEC_ID_NONE, \
+    asfrtp_parse_sdp_line, \
+};
+
+RTP_ASF_HANDLER(asf_pfv, "x-asf-pf",  CODEC_TYPE_VIDEO);
+RTP_ASF_HANDLER(asf_pfa, "x-asf-pf",  CODEC_TYPE_AUDIO);

libavformat/rtp_asf.h

@@ -23,6 +23,7 @@
 #define AVFORMAT_RTP_ASF_H
 
 #include "avformat.h"
+#include "rtpdec.h"
 
 /**
  * Parse a Windows Media Server-specific SDP line
@@ -32,4 +33,11 @@
  */
 void ff_wms_parse_sdp_a_line(AVFormatContext *s, const char *p);
 
+/**
+ * Handlers for the x-asf-pf payloads (the payload ID for RTP/ASF).
+ * Defined and implemented in rtp_asf.c, registered in rtpdec.c.
+ */
+extern RTPDynamicProtocolHandler ff_ms_rtp_asf_pfv_handler,
+                                 ff_ms_rtp_asf_pfa_handler;
+
 #endif /* AVFORMAT_RTP_ASF_H */

libavformat/rtpdec.c

@@ -30,6 +30,7 @@
 #include "network.h"
 
 #include "rtpdec.h"
+#include "rtp_asf.h"
 #include "rtp_h264.h"
 
 //#define DEBUG
@@ -60,6 +61,9 @@ void av_register_rtp_dynamic_payload_handlers(void)
     ff_register_dynamic_payload_handler(&mp4v_es_handler);
     ff_register_dynamic_payload_handler(&mpeg4_generic_handler);
     ff_register_dynamic_payload_handler(&ff_h264_dynamic_handler);
+
+    ff_register_dynamic_payload_handler(&ff_ms_rtp_asf_pfv_handler);
+    ff_register_dynamic_payload_handler(&ff_ms_rtp_asf_pfa_handler);
 }
 
 static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int len)