RTP/RTSP and MPEG4-AAC audio

  - preliminary support for mpeg4-aac rtp payload (no interleaving support)
  - use udp transport as default (makes more sense with rtp, doesn't it ?)
  - some code factorization, so adding support for new rtp payload will be easier
  (I hope ;-)
patch by (Romain DEGEZ: romain degez, smartjog com)

Originally committed as revision 4306 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 238 insertions, 110 deletions

diff --git a/libavformat/rtp.c b/libavformat/rtp.c
index 32711af405..d78a777bc6 100644
--- a/libavformat/rtp.c
+++ b/libavformat/rtp.c
@@ -18,6 +18,7 @@
  */
 #include "avformat.h"
 #include "mpegts.h"
+#include "bitstream.h"
 
 #include <unistd.h>
 #include <sys/types.h>
@@ -42,36 +43,146 @@
          'url_open_dyn_packet_buf') 
 */
 
-#define RTP_VERSION 2
-
-#define RTP_MAX_SDES 256   /* maximum text length for SDES */
-
-/* RTCP paquets use 0.5 % of the bandwidth */
-#define RTCP_TX_RATIO_NUM 5
-#define RTCP_TX_RATIO_DEN 1000
-
-typedef enum {
-  RTCP_SR   = 200,
-  RTCP_RR   = 201,
-  RTCP_SDES = 202,
-  RTCP_BYE  = 203,
-  RTCP_APP  = 204
-} rtcp_type_t;
-
-typedef enum {
-  RTCP_SDES_END    =  0,
-  RTCP_SDES_CNAME  =  1,
-  RTCP_SDES_NAME   =  2,
-  RTCP_SDES_EMAIL  =  3,
-  RTCP_SDES_PHONE  =  4,
-  RTCP_SDES_LOC    =  5,
-  RTCP_SDES_TOOL   =  6,
-  RTCP_SDES_NOTE   =  7,
-  RTCP_SDES_PRIV   =  8, 
-  RTCP_SDES_IMG    =  9,
-  RTCP_SDES_DOOR   = 10,
-  RTCP_SDES_SOURCE = 11
-} rtcp_sdes_type_t;
+/* from http://www.iana.org/assignments/rtp-parameters last updated 05 January 2005 */
+AVRtpPayloadType_t AVRtpPayloadTypes[]=
+{
+  {0, "PCMU",        CODEC_TYPE_AUDIO,   CODEC_ID_PCM_MULAW, 8000, 1},
+  {1, "Reserved",    CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {2, "Reserved",    CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {3, "GSM",         CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {4, "G723",        CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {5, "DVI4",        CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {6, "DVI4",        CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 16000, 1},
+  {7, "LPC",         CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {8, "PCMA",        CODEC_TYPE_AUDIO,   CODEC_ID_PCM_ALAW, 8000, 1},
+  {9, "G722",        CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {10, "L16",        CODEC_TYPE_AUDIO,   CODEC_ID_PCM_S16BE, 44100, 2},
+  {11, "L16",        CODEC_TYPE_AUDIO,   CODEC_ID_PCM_S16BE, 44100, 1},
+  {12, "QCELP",      CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {13, "CN",         CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {14, "MPA",        CODEC_TYPE_AUDIO,   CODEC_ID_MP2, 90000, -1},
+  {15, "G728",       CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {16, "DVI4",       CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 11025, 1},
+  {17, "DVI4",       CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 22050, 1},
+  {18, "G729",       CODEC_TYPE_AUDIO,   CODEC_ID_NONE, 8000, 1},
+  {19, "reserved",   CODEC_TYPE_AUDIO,   CODEC_ID_NONE, -1, -1},
+  {20, "unassigned", CODEC_TYPE_AUDIO,   CODEC_ID_NONE, -1, -1},
+  {21, "unassigned", CODEC_TYPE_AUDIO,   CODEC_ID_NONE, -1, -1},
+  {22, "unassigned", CODEC_TYPE_AUDIO,   CODEC_ID_NONE, -1, -1},
+  {23, "unassigned", CODEC_TYPE_AUDIO,   CODEC_ID_NONE, -1, -1},
+  {24, "unassigned", CODEC_TYPE_VIDEO,   CODEC_ID_NONE, -1, -1},
+  {25, "CelB",       CODEC_TYPE_VIDEO,   CODEC_ID_NONE, 90000, -1},
+  {26, "JPEG",       CODEC_TYPE_VIDEO,   CODEC_ID_MJPEG, 90000, -1},
+  {27, "unassigned", CODEC_TYPE_VIDEO,   CODEC_ID_NONE, -1, -1},
+  {28, "nv",         CODEC_TYPE_VIDEO,   CODEC_ID_NONE, 90000, -1},
+  {29, "unassigned", CODEC_TYPE_VIDEO,   CODEC_ID_NONE, -1, -1},
+  {30, "unassigned", CODEC_TYPE_VIDEO,   CODEC_ID_NONE, -1, -1},
+  {31, "H261",       CODEC_TYPE_VIDEO,   CODEC_ID_H261, 90000, -1},
+  {32, "MPV",        CODEC_TYPE_VIDEO,   CODEC_ID_MPEG1VIDEO, 90000, -1},
+  {33, "MP2T",       CODEC_TYPE_DATA,    CODEC_ID_MPEG2TS, 90000, -1},
+  {34, "H263",       CODEC_TYPE_VIDEO,   CODEC_ID_H263, 90000, -1},
+  {35, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {36, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {37, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {38, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {39, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {40, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {41, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {42, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {43, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {44, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {45, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {46, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {47, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {48, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {49, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {50, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {51, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {52, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {53, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {54, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {55, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {56, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {57, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {58, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {59, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {60, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {61, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {62, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {63, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {64, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {65, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {66, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {67, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {68, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {69, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {70, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {71, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {72, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {73, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {74, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {75, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {76, "reserved for RTCP conflict avoidance", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {77, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {78, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {79, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {80, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {81, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {82, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {83, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {84, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {85, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {86, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {87, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {88, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {89, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {90, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {91, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {92, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {93, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {94, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {95, "unassigned", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {96, "dynamic",    CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {97, "dynamic",    CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {98, "dynamic",    CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {99, "dynamic",    CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {100, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {101, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {102, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {103, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {104, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {105, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {106, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {107, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {108, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {109, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {110, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {111, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {112, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {113, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {114, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {115, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {116, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {117, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {118, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {119, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {120, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {121, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {122, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {123, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {124, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {125, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {126, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {127, "dynamic",   CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1},
+  {-1, "",           CODEC_TYPE_UNKNOWN, CODEC_ID_NONE, -1, -1}
+};
+
+AVRtpDynamicPayloadType_t AVRtpDynamicPayloadTypes[]=
+{
+    {"MP4V-ES", CODEC_TYPE_VIDEO, CODEC_ID_MPEG4},
+    {"mpeg4-generic", CODEC_TYPE_AUDIO, CODEC_ID_MPEG4AAC},
+    {"", CODEC_TYPE_UNKNOWN, CODEC_ID_NONE}
+};
 
 struct RTPDemuxContext {
     AVFormatContext *ic;
@@ -83,7 +194,7 @@ struct RTPDemuxContext {
     uint32_t base_timestamp;
     uint32_t cur_timestamp;
     int max_payload_size;
-    MpegTSContext *ts; /* only used for RTP_PT_MPEG2TS payloads */
+    MpegTSContext *ts; /* only used for MP2T payloads */
     int read_buf_index;
     int read_buf_size;
     
@@ -99,94 +210,37 @@ struct RTPDemuxContext {
     /* buffer for output */
     uint8_t buf[RTP_MAX_PACKET_LENGTH];
     uint8_t *buf_ptr;
+    /* special infos for au headers parsing */
+    rtp_payload_data_t *rtp_payload_data;
 };
 
 int rtp_get_codec_info(AVCodecContext *codec, int payload_type)
 {
-    switch(payload_type) {
-    case RTP_PT_ULAW:
-        codec->codec_type = CODEC_TYPE_AUDIO;
-        codec->codec_id = CODEC_ID_PCM_MULAW;
-        codec->channels = 1;
-        codec->sample_rate = 8000;
-        break;
-    case RTP_PT_ALAW:
-        codec->codec_type = CODEC_TYPE_AUDIO;
-        codec->codec_id = CODEC_ID_PCM_ALAW;
-        codec->channels = 1;
-        codec->sample_rate = 8000;
-        break;
-    case RTP_PT_S16BE_STEREO:
-        codec->codec_type = CODEC_TYPE_AUDIO;
-        codec->codec_id = CODEC_ID_PCM_S16BE;
-        codec->channels = 2;
-        codec->sample_rate = 44100;
-        break;
-    case RTP_PT_S16BE_MONO:
-        codec->codec_type = CODEC_TYPE_AUDIO;
-        codec->codec_id = CODEC_ID_PCM_S16BE;
-        codec->channels = 1;
-        codec->sample_rate = 44100;
-        break;
-    case RTP_PT_MPEGAUDIO:
-        codec->codec_type = CODEC_TYPE_AUDIO;
-        codec->codec_id = CODEC_ID_MP2;
-        break;
-    case RTP_PT_JPEG:
-        codec->codec_type = CODEC_TYPE_VIDEO;
-        codec->codec_id = CODEC_ID_MJPEG;
-        break;
-    case RTP_PT_MPEGVIDEO:
-        codec->codec_type = CODEC_TYPE_VIDEO;
-        codec->codec_id = CODEC_ID_MPEG1VIDEO;
-        break;
-    case RTP_PT_MPEG2TS:
-        codec->codec_type = CODEC_TYPE_DATA;
-        codec->codec_id = CODEC_ID_MPEG2TS;
-        break;
-    default:
-        return -1;
+    if (AVRtpPayloadTypes[payload_type].codec_id != CODEC_ID_NONE) {
+        codec->codec_type = AVRtpPayloadTypes[payload_type].codec_type;
+        codec->codec_id = AVRtpPayloadTypes[payload_type].codec_type;
+        if (AVRtpPayloadTypes[payload_type].audio_channels > 0)
+            codec->channels = AVRtpPayloadTypes[payload_type].audio_channels;
+        if (AVRtpPayloadTypes[payload_type].clock_rate > 0)
+            codec->sample_rate = AVRtpPayloadTypes[payload_type].clock_rate;
+        return 0;
     }
-    return 0;
+    return -1;
 }
 
 /* return < 0 if unknown payload type */
 int rtp_get_payload_type(AVCodecContext *codec)
 {
-    int payload_type;
+    int i, payload_type;
 
     /* compute the payload type */
-    payload_type = -1;
-    switch(codec->codec_id) {
-    case CODEC_ID_PCM_MULAW:
-        payload_type = RTP_PT_ULAW;
-        break;
-    case CODEC_ID_PCM_ALAW:
-        payload_type = RTP_PT_ALAW;
-        break;
-    case CODEC_ID_PCM_S16BE:
-        if (codec->channels == 1) {
-            payload_type = RTP_PT_S16BE_MONO;
-        } else if (codec->channels == 2) {
-            payload_type = RTP_PT_S16BE_STEREO;
+    for (payload_type = -1, i = 0; AVRtpPayloadTypes[i].pt >= 0; ++i)
+        if (AVRtpPayloadTypes[i].codec_id == codec->codec_id) {
+            if (codec->codec_id == CODEC_ID_PCM_S16BE)
+                if (codec->channels != AVRtpPayloadTypes[i].audio_channels)
+                    continue;
+            payload_type = AVRtpPayloadTypes[i].pt;
         }
-        break;
-    case CODEC_ID_MP2:
-    case CODEC_ID_MP3:
-        payload_type = RTP_PT_MPEGAUDIO;
-        break;
-    case CODEC_ID_MJPEG:
-        payload_type = RTP_PT_JPEG;
-        break;
-    case CODEC_ID_MPEG1VIDEO:
-        payload_type = RTP_PT_MPEGVIDEO;
-        break;
-    case CODEC_ID_MPEG2TS:
-        payload_type = RTP_PT_MPEG2TS;
-        break;
-    default:
-        break;
-    }
     return payload_type;
 }
 
@@ -216,7 +270,7 @@ static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int l
  * MPEG2TS streams to indicate that they should be demuxed inside the
  * rtp demux (otherwise CODEC_ID_MPEG2TS packets are returned) 
  */
-RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_type)
+RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_type, rtp_payload_data_t *rtp_payload_data)
 {
     RTPDemuxContext *s;
 
@@ -228,7 +282,8 @@ RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_t
     s->first_rtcp_ntp_time = AV_NOPTS_VALUE;
     s->ic = s1;
     s->st = st;
-    if (payload_type == RTP_PT_MPEG2TS) {
+    s->rtp_payload_data = rtp_payload_data;
+    if (!strcmp(AVRtpPayloadTypes[payload_type].enc_name, "MP2T")) {
         s->ts = mpegts_parse_open(s->ic);
         if (s->ts == NULL) {
             av_free(s);
@@ -250,6 +305,57 @@ RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_t
     return s;
 }
 
+static int rtp_parse_mp4_au(RTPDemuxContext *s, const uint8_t *buf)
+{
+    AVCodecContext codec;
+    int au_headers_length, au_header_size, i;
+    GetBitContext getbitcontext;
+    rtp_payload_data_t *infos;
+
+    infos = s->rtp_payload_data;
+
+    if (infos == NULL)
+        return -1;
+
+    codec = s->st->codec;
+
+    /* decode the first 2 bytes where are stored the AUHeader sections
+       length in bits */
+    au_headers_length = BE_16(buf);
+
+    if (au_headers_length > RTP_MAX_PACKET_LENGTH)
+      return -1;
+
+    infos->au_headers_length_bytes = (au_headers_length + 7) / 8;
+
+    /* skip AU headers length section (2 bytes) */
+    buf += 2;
+
+    init_get_bits(&getbitcontext, buf, infos->au_headers_length_bytes * 8);
+
+    /* XXX: Wrong if optionnal additional sections are present (cts, dts etc...) */
+    au_header_size = infos->sizelength + infos->indexlength;
+    if (au_header_size <= 0 || (au_headers_length % au_header_size != 0))
+        return -1;
+
+    infos->nb_au_headers = au_headers_length / au_header_size;
+    infos->au_headers = av_malloc(sizeof(struct AUHeaders) * infos->nb_au_headers);
+
+    /* XXX: We handle multiple AU Section as only one (need to fix this for interleaving)
+       In my test, the faad decoder doesnt behave correctly when sending each AU one by one
+       but does when sending the whole as one big packet...  */
+    infos->au_headers[0].size = 0;
+    infos->au_headers[0].index = 0;
+    for (i = 0; i < infos->nb_au_headers; ++i) {
+        infos->au_headers[0].size += get_bits_long(&getbitcontext, infos->sizelength);
+        infos->au_headers[0].index = get_bits_long(&getbitcontext, infos->indexlength);
+    }
+
+    infos->nb_au_headers = 1;
+
+    return 0;
+}
+
 /**
  * Parse an RTP or RTCP packet directly sent as a buffer. 
  * @param s RTP parse context.
@@ -304,8 +410,8 @@ int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
         av_log(&s->st->codec, AV_LOG_ERROR, "RTP: PT=%02x: bad cseq %04x expected=%04x\n", 
                payload_type, seq, ((s->seq + 1) & 0xffff));
     }
-    s->seq = seq;
 #endif
+    s->seq = seq;
     len -= 12;
     buf += 12;
 
@@ -370,6 +476,28 @@ int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
                 pkt->pts = addend + delta_timestamp;
             }
             break;
+        case CODEC_ID_MPEG4:
+            pkt->pts = timestamp;
+            break;
+        case CODEC_ID_MPEG4AAC:
+            if (rtp_parse_mp4_au(s, buf))
+              return -1;
+            rtp_payload_data_t *infos = s->rtp_payload_data;
+            if (infos == NULL)
+                return -1;
+            buf += infos->au_headers_length_bytes + 2;
+            len -= infos->au_headers_length_bytes + 2;
+
+            /* XXX: Fixme we only handle the case where rtp_parse_mp4_au define
+               one au_header */
+            av_new_packet(pkt, infos->au_headers[0].size);
+            memcpy(pkt->data, buf, infos->au_headers[0].size);
+            buf += infos->au_headers[0].size;
+            len -= infos->au_headers[0].size;
+            s->read_buf_size = len;
+            s->buf_ptr = (char *)buf;
+            pkt->stream_index = s->st->index;
+            return 0;
         default:
             /* no timestamp info yet */
             break;
@@ -381,7 +509,7 @@ int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
 
 void rtp_parse_close(RTPDemuxContext *s)
 {
-    if (s->payload_type == RTP_PT_MPEG2TS) {
+    if (!strcmp(AVRtpPayloadTypes[s->payload_type].enc_name, "MP2T")) {
         mpegts_parse_close(s->ts);
     }
     av_free(s);