[MPlayer-dev-eng] [PATCH] Support for MPEG-4 (AAC) audio RTSP/RTP streams

[Ross Finlayson]

The following patch allows MPlayer to be used (with the "LIVE.COM Streaming 
Media" libraries) to play MPEG-4 (i.e., AAC) RTSP/RTP streams.

In particular, 3GPP standard audio streams can now be played.

	Ross.
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Index: libmpdemux/demux_rtp.cpp
===================================================================
RCS file: /cvsroot/mplayer/main/libmpdemux/demux_rtp.cpp,v
retrieving revision 1.8
diff -u -r1.8 demux_rtp.cpp
--- libmpdemux/demux_rtp.cpp	6 Dec 2002 09:41:13 -0000	1.8
+++ libmpdemux/demux_rtp.cpp	17 Jan 2003 08:46:55 -0000
@@ -247,6 +247,19 @@
 	    wf->nBlockAlign = 33;
 	    wf->wBitsPerSample = 16;
 	    wf->cbSize = 0;
+	  } else if (strcmp(subsession->codecName(), "MP4A-LATM") == 0) {
+	    wf->wFormatTag = sh_audio->format = mmioFOURCC('m','p','4','a');
+	    // For the codec to work correctly, it needs "AudioSpecificConfig"
+	    // data, which is parsed from the "StreamMuxConfig" string that
+	    // was present (hopefully) in the SDP description:
+	    unsigned codecdata_len;
+	    sh_audio->codecdata
+	      = parseStreamMuxConfigStr(subsession->fmtp_config(),
+					codecdata_len);
+	    sh_audio->codecdata_len = codecdata_len;
+#ifndef HAVE_FAAD
+	    fprintf(stderr, "Warning: Playing MPEG-4 (AAC) Audio requires the \"faad\" library!\n");
+#endif
 	  } else {
 	    fprintf(stderr,
 		    "Unknown mplayer format code for MIME type \"audio/%s\"\n",