]> git.sesse.net Git - vlc/blobdiff - modules/stream_out/rtp.c
IP6 "MUST NOT" have a TTL.
[vlc] / modules / stream_out / rtp.c
index 03ec6bb68b1f91c9fd0e34b0ad4005cc85cc8de2..22def1bf5b9380784571e21bd4fec4781b522228 100644 (file)
 /*****************************************************************************
  * Preamble
  *****************************************************************************/
+#include "config.h"
+#include <stdio.h>
 #include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#endif
 
 #include <errno.h>
 
 #include <vlc/vlc.h>
-#include <vlc/input.h>
-#include <vlc/sout.h>
+#include <vlc_sout.h>
+#include <vlc_block.h>
 
-#include "vlc_httpd.h"
-#include "vlc_url.h"
-#include "network.h"
-#include "charset.h"
+#include <vlc_httpd.h>
+#include <vlc_url.h>
+#include <vlc_network.h>
+#include <vlc_charset.h>
 
 /*****************************************************************************
  * Module descriptor
 #define PORT_VIDEO_LONGTEXT N_( \
     "This allows you to specify the default video port for the RTP streaming." )
 
-#define TTL_TEXT N_("Time-To-Live (TTL)")
+#define TTL_TEXT N_("Hop limit (TTL)")
 #define TTL_LONGTEXT N_( \
-    "This allows you to specify the Time-To-Live for the output stream." )
+    "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
+    "the multicast packets sent by the stream output (0 = use operating " \
+    "system built-in default).")
 
 #define RFC3016_TEXT N_("MP4A LATM")
 #define RFC3016_LONGTEXT N_( \
@@ -244,6 +251,7 @@ struct sout_stream_id_t
     char        *psz_destination;
     int         i_port;
     int         i_cat;
+    int         i_bitrate;
 
     /* Packetizer specific fields */
     pf_rtp_packetizer_t pf_packetize;
@@ -278,8 +286,8 @@ static int  RtspCallbackId( httpd_callback_sys_t *, httpd_client_t *,
                             httpd_message_t *, httpd_message_t * );
 
 
-static rtsp_client_t *RtspClientNew( sout_stream_t *, char *psz_session );
-static rtsp_client_t *RtspClientGet( sout_stream_t *, char *psz_session );
+static rtsp_client_t *RtspClientNew( sout_stream_t *, const char *psz_session );
+static rtsp_client_t *RtspClientGet( sout_stream_t *, const char *psz_session );
 static void           RtspClientDel( sout_stream_t *, rtsp_client_t * );
 
 /*****************************************************************************
@@ -290,11 +298,12 @@ static int Open( vlc_object_t *p_this )
     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
     sout_instance_t     *p_sout = p_stream->p_sout;
     sout_stream_sys_t   *p_sys = NULL;
-    sout_cfg_t          *p_cfg = NULL;
+    config_chain_t      *p_cfg = NULL;
     vlc_value_t         val;
     vlc_bool_t          b_rtsp = VLC_FALSE;
 
-    sout_CfgParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options, p_stream->p_cfg );
+    config_ChainParse( p_stream, SOUT_CFG_PREFIX,
+                       ppsz_sout_options, p_stream->p_cfg );
 
     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 
@@ -382,9 +391,8 @@ static int Open( vlc_object_t *p_this )
 
     if( val.i_int < 0 )
     {
-        msg_Err( p_stream, "illegal TTL %d", val.i_int );
-        free( p_sys );
-        return VLC_EGENERIC;
+        msg_Warn( p_stream, "illegal TTL %d, using 1", val.i_int );
+        val.i_int = -1;
     }
     p_sys->i_ttl = val.i_int;
 
@@ -427,13 +435,14 @@ static int Open( vlc_object_t *p_this )
     if( *val.psz_string )
     {
         sout_access_out_t *p_grab;
-        char *psz_rtpmap, url[NI_MAXHOST + 8], access[17], psz_ttl[5], ipv;
+        const char *psz_rtpmap;
+        char url[NI_MAXHOST + 8], access[17], psz_ttl[5], ipv;
 
         if( b_rtsp )
         {
-        //    msg_Err( p_stream, "muxing is not supported in RTSP mode" );
-        //    free( p_sys );
-        //    return VLC_EGENERIC;
+            msg_Err( p_stream, "muxing is not supported in RTSP mode" );
+            free( p_sys );
+            return VLC_EGENERIC;
         }
         else if( !p_sys->psz_destination || *p_sys->psz_destination == '\0' )
         {
@@ -504,7 +513,7 @@ static int Open( vlc_object_t *p_this )
         p_grab->p_sout      = p_sout;
         p_grab->psz_access  = strdup( "grab" );
         p_grab->p_cfg       = NULL;
-        p_grab->psz_name    = strdup( "" );
+        p_grab->psz_path    = strdup( "" );
         p_grab->p_sys       = (sout_access_out_sys_t*)p_stream;
         p_grab->pf_seek     = NULL;
         p_grab->pf_write    = AccessOutGrabberWrite;
@@ -520,20 +529,15 @@ static int Open( vlc_object_t *p_this )
         }
 
         /* create the SDP for a muxed stream (only once) */
-        /* FIXME  http://www.faqs.org/rfcs/rfc2327.html
-           All text fields should be UTF-8 encoded. Use global a:charset to announce this.
+        /* FIXME  http://www.faqs.org/rfcs/rfc4566.html
            o= - should be local username (no spaces allowed)
-           o= time should be hashed with some other value to garantue uniqueness
-           o= we need IP6 support?
+           o= time should be hashed with some other value to garantee uniqueness
            o= don't use the localhost address. use fully qualified domain name or IP4 address
-           p= international phone number (pass via vars?)
-           c= IP6 support
-           a= recvonly (missing)
-           a= type:broadcast (missing)
-           a= charset: (normally charset should be UTF-8, this can be used to override s= and i=)
+          a= source-filter: we need our source address
            a= x-plgroup: (missing)
            RTP packets need to get the correct src IP address  */
-        if( net_AddressIsMulticast( (vlc_object_t *)p_stream, p_sys->psz_destination ) )
+        if( (ipv == 4)
+        && net_AddressIsMulticast( (vlc_object_t *)p_stream, p_sys->psz_destination ) )
         {
             snprintf( psz_ttl, sizeof( psz_ttl ), "/%d", p_sys->i_ttl );
             psz_ttl[sizeof( psz_ttl ) - 1] = '\0';
@@ -551,9 +555,11 @@ static int Open( vlc_object_t *p_this )
                   "i=%s\r\n"
                   "u=%s\r\n"
                   "e=%s\r\n"
+                  "c=IN IP%c %s%s\r\n"
                   "t=0 0\r\n" /* permanent stream */ /* when scheduled from vlm, we should set this info correctly */
                   "a=tool:"PACKAGE_STRING"\r\n"
-                  "c=IN IP%c %s%s\r\n"
+                  "a=recvonly\r\n"
+                  "a=type:broadcast\r\n"
                   "m=video %d RTP/AVP %d\r\n"
                   "a=rtpmap:%d %s\r\n",
                   p_sys->i_sdp_id, p_sys->i_sdp_version,
@@ -588,7 +594,7 @@ static int Open( vlc_object_t *p_this )
     var_Get( p_stream, SOUT_CFG_PREFIX "sdp", &val );
     if( *val.psz_string )
     {
-        sout_cfg_t *p_cfg;
+        config_chain_t *p_cfg;
 
         SDPHandleUrl( p_stream, val.psz_string );
 
@@ -689,6 +695,13 @@ static void Close( vlc_object_t * p_this )
         free( p_sys->psz_sdp );
         p_sys->psz_sdp = NULL;
     }
+    if( p_sys->b_export_sdp_file )
+    {
+#ifdef HAVE_UNISTD_H
+        unlink( p_sys->psz_sdp_file );
+#endif
+        free( p_sys->psz_sdp_file );
+    }
     free( p_sys );
 }
 
@@ -806,6 +819,10 @@ static char *SDPGenerate( const sout_stream_t *p_stream,
         {
             i_size += strlen( "a=fmtp:* *\r\n" ) + strlen( id->psz_fmtp ) + 10;
         }
+        if ( id->i_bitrate)
+        {
+            i_size += strlen( "b=AS: *\r\n") + 10;
+        }
         if( b_rtsp )
         {
             i_size += strlen( "a=control:*/trackID=*\r\n" ) + strlen( p_sys->psz_rtsp_control ) + 10;
@@ -876,9 +893,13 @@ static char *SDPGenerate( const sout_stream_t *p_stream,
             p += sprintf( p, "a=fmtp:%d %s\r\n", id->i_payload_type,
                           id->psz_fmtp );
         }
+        if ( id->i_bitrate)
+        {
+            p += sprintf(p,"b=AS:%d\r\n",id->i_bitrate);
+        }
         if( b_rtsp )
         {
-            p += sprintf( p, "a=control:trackID=%d\r\n", i );
+            p += sprintf( p, "a=control:/trackID=%d\r\n", i );
         }
     }
     if( p_sys->p_mux )
@@ -902,6 +923,7 @@ static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * )
 static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * );
 static int rtp_packetize_mp4a_latm ( sout_stream_t *, sout_stream_id_t *, block_t * );
 static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * );
+static int rtp_packetize_h264 ( sout_stream_t *, sout_stream_id_t *, block_t * );
 static int rtp_packetize_amr  ( sout_stream_t *, sout_stream_id_t *, block_t * );
 
 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
@@ -1067,6 +1089,64 @@ static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
             id->psz_rtpmap = strdup( "H263-1998/90000" );
             id->pf_packetize = rtp_packetize_h263;
             break;
+        case VLC_FOURCC( 'h', '2', '6', '4' ):
+            id->i_payload_type = p_sys->i_payload_type++;
+            id->i_clock_rate = 90000;
+            id->psz_rtpmap = strdup( "H264/90000" );
+            id->pf_packetize = rtp_packetize_h264;
+            id->psz_fmtp = NULL;
+
+            if( p_fmt->i_extra > 0 )
+            {
+                uint8_t *p_buffer = p_fmt->p_extra;
+                int     i_buffer = p_fmt->i_extra;
+                char    *p_64_sps = NULL;
+                char    *p_64_pps = NULL;
+                char    hexa[6+1];
+
+                while( i_buffer > 4 && 
+                       p_buffer[0] == 0 && p_buffer[1] == 0 &&
+                       p_buffer[2] == 0 && p_buffer[3] == 1 )
+                {
+                    const int i_nal_type = p_buffer[4]&0x1f;
+                    int i_offset;
+                    int i_size      = 0;
+
+                    msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
+
+                    i_size = i_buffer;
+                    for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
+                    {
+                        if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
+                        {
+                            /* we found another startcode */
+                            i_size = i_offset;
+                            break;
+                        } 
+                    }
+                    if( i_nal_type == 7 )
+                    {
+                        p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
+                        sprintf_hexa( hexa, &p_buffer[5], 3 );
+                    }
+                    else if( i_nal_type == 8 )
+                    {
+                        p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
+                    }
+                    i_buffer -= i_size;
+                    p_buffer += i_size;
+                }
+                /* */
+                if( p_64_sps && p_64_pps )
+                    asprintf( &id->psz_fmtp, "packetization-mode=1;profile-level-id=%s;sprop-parameter-sets=%s,%s;", hexa, p_64_sps, p_64_pps );
+                if( p_64_sps )
+                    free( p_64_sps );
+                if( p_64_pps )
+                    free( p_64_pps );
+            }
+            if( !id->psz_fmtp )
+                id->psz_fmtp = strdup( "packetization-mode=1" );
+            break;
 
         case VLC_FOURCC( 'm', 'p', '4', 'v' ):
         {
@@ -1168,6 +1248,7 @@ static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
     id->ssrc[3] = rand()&0xff;
     id->i_sequence = rand()&0xffff;
     id->i_timestamp_start = rand()&0xffffffff;
+    id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
 
     id->i_mtu    = config_GetInt( p_stream, "mtu" );  /* XXX beuk */
     if( id->i_mtu <= 16 + MTU_REDUCE )
@@ -1387,7 +1468,7 @@ static int SapSetup( sout_stream_t *p_stream )
 {
     sout_stream_sys_t *p_sys = p_stream->p_sys;
     sout_instance_t   *p_sout = p_stream->p_sout;
-    announce_method_t *p_method = sout_AnnounceMethodCreate( METHOD_TYPE_SAP );
+    announce_method_t *p_method = sout_SAPMethod();
 
     /* Remove the previous session */
     if( p_sys->p_session != NULL)
@@ -1399,12 +1480,13 @@ static int SapSetup( sout_stream_t *p_stream )
 
     if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
     {
-        p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, p_sys->psz_sdp,
+        p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, SOUT_CFG_PREFIX,
+                                                     p_sys->psz_sdp,
                                                      p_sys->psz_destination,
                                                      p_method );
     }
 
-    free( p_method );
+    sout_MethodRelease( p_method );
     return VLC_SUCCESS;
 }
 
@@ -1482,11 +1564,11 @@ static int  HttpCallback( httpd_file_sys_t *p_args,
 /****************************************************************************
  * RTSP:
  ****************************************************************************/
-static rtsp_client_t *RtspClientNew( sout_stream_t *p_stream, char *psz_session )
+static rtsp_client_t *RtspClientNew( sout_stream_t *p_stream, const char *psz_session )
 {
     rtsp_client_t *rtsp = malloc( sizeof( rtsp_client_t ));
 
-    rtsp->psz_session = psz_session;
+    rtsp->psz_session = strdup( psz_session );
     rtsp->i_last = 0;
     rtsp->b_playing = VLC_FALSE;
     rtsp->i_id = 0;
@@ -1498,11 +1580,11 @@ static rtsp_client_t *RtspClientNew( sout_stream_t *p_stream, char *psz_session
 
     return rtsp;
 }
-static rtsp_client_t *RtspClientGet( sout_stream_t *p_stream, char *psz_session )
+static rtsp_client_t *RtspClientGet( sout_stream_t *p_stream, const char *psz_session )
 {
     int i;
 
-    if( psz_session ) return NULL;
+    if( !psz_session ) return NULL;
 
     for( i = 0; i < p_stream->p_sys->i_rtsp; i++ )
     {
@@ -1567,8 +1649,8 @@ static int  RtspCallback( httpd_callback_sys_t *p_args,
     sout_stream_t *p_stream = (sout_stream_t*)p_args;
     sout_stream_sys_t *p_sys = p_stream->p_sys;
     char *psz_destination = p_sys->psz_destination;
-    char *psz_session = NULL;
-    char *psz_cseq = NULL;
+    const char *psz_session = NULL;
+    const char *psz_cseq = NULL;
     int i_cseq = 0;
 
     if( answer == NULL || query == NULL )
@@ -1590,7 +1672,7 @@ static int  RtspCallback( httpd_callback_sys_t *p_args,
             answer->i_status = 200;
             answer->psz_status = strdup( "OK" );
             httpd_MsgAdd( answer, "Content-type",  "%s", "application/sdp" );
-
+            httpd_MsgAdd( answer, "Content-Base",  "%s", p_sys->psz_rtsp_control );
             answer->p_body = (uint8_t *)psz_sdp;
             answer->i_body = strlen( psz_sdp );
             break;
@@ -1691,9 +1773,7 @@ static int  RtspCallback( httpd_callback_sys_t *p_args,
     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 
     if( psz_session )
-    {
         httpd_MsgAdd( answer, "Session", "%s;timeout=5", psz_session );
-    }
     return VLC_SUCCESS;
 }
 
@@ -1704,17 +1784,20 @@ static int RtspCallbackId( httpd_callback_sys_t *p_args,
     sout_stream_id_t *id = (sout_stream_id_t*)p_args;
     sout_stream_t    *p_stream = id->p_stream;
     sout_stream_sys_t *p_sys = p_stream->p_sys;
-    char *psz_session = NULL;
-    char *psz_cseq = NULL;
+    char psz_session_init[100];
+    const char *psz_session = NULL;
+    const char *psz_cseq = NULL;
     int  i_cseq = 0;
 
 
     if( answer == NULL || query == NULL )
-    {
         return VLC_SUCCESS;
-    }
     //fprintf( stderr, "RtspCallback query: type=%d\n", query->i_type );
 
+    /* */
+    snprintf( psz_session_init, sizeof(psz_session_init), "%d", rand() );
+
+    /* */
     answer->i_proto = HTTPD_PROTO_RTSP;
     answer->i_version= query->i_version;
     answer->i_type   = HTTPD_MSG_ANSWER;
@@ -1723,7 +1806,7 @@ static int RtspCallbackId( httpd_callback_sys_t *p_args,
     {
         case HTTPD_MSG_SETUP:
         {
-            char *psz_transport = httpd_MsgGet( query, "Transport" );
+            const char *psz_transport = httpd_MsgGet( query, "Transport" );
 
             //fprintf( stderr, "HTTPD_MSG_SETUP: transport=%s\n", psz_transport );
 
@@ -1734,12 +1817,11 @@ static int RtspCallbackId( httpd_callback_sys_t *p_args,
                 answer->psz_status = strdup( "OK" );
                 answer->i_body = 0;
                 answer->p_body = NULL;
+
                 psz_session = httpd_MsgGet( query, "Session" );
                 if( !psz_session )
-                {
-                    psz_session = malloc( 100 );
-                    sprintf( psz_session, "%d", rand() );
-                }
+                    psz_session = psz_session_init;
+
                 httpd_MsgAdd( answer, "Transport",
                               "RTP/AVP/UDP;destination=%s;port=%d-%d;ttl=%d",
                               id->psz_destination, id->i_port,id->i_port+1,
@@ -1768,10 +1850,8 @@ static int RtspCallbackId( httpd_callback_sys_t *p_args,
                 psz_session = httpd_MsgGet( query, "Session" );
                 if( !psz_session )
                 {
-                    psz_session = malloc( 100 );
-                    sprintf( psz_session, "%d", rand() );
-
-                    rtsp = RtspClientNew( p_stream, psz_session );
+                    psz_session = psz_session_init;
+                    rtsp = RtspClientNew( p_stream, psz_session_init );
                 }
                 else
                 {
@@ -1791,8 +1871,7 @@ static int RtspCallbackId( httpd_callback_sys_t *p_args,
                     snprintf( psz_access, sizeof( psz_access ),
                               "udp{raw,ttl=%d}", p_sys->i_ttl );
                 else
-                    strncpy( psz_access, "udp{raw}", sizeof( psz_access ) );
-                psz_access[sizeof( psz_access ) - 1] = '\0';
+                    strlcpy( psz_access, "udp{raw}", sizeof( psz_access ) );
 
                 snprintf( psz_url, sizeof( psz_url ),
                          ( strchr( ip, ':' ) != NULL ) ? "[%s]:%d" : "%s:%d",
@@ -1844,9 +1923,7 @@ static int RtspCallbackId( httpd_callback_sys_t *p_args,
     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 
     if( psz_session )
-    {
         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
-    }
     return VLC_SUCCESS;
 }
 
@@ -2335,6 +2412,122 @@ static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id,
     return VLC_SUCCESS;
 }
 
+/* rfc3984 */
+static int rtp_packetize_h264_nal( sout_stream_t *p_stream, sout_stream_id_t *id,
+                                   const uint8_t *p_data, int i_data, int64_t i_pts, int64_t i_dts, vlc_bool_t b_last, int64_t i_length )
+{
+    const int i_max = id->i_mtu - 12; /* payload max in one packet */
+    int i_nal_hdr;
+    int i_nal_type;
+
+    if( i_data < 5 )
+        return VLC_SUCCESS;
+
+    i_nal_hdr = p_data[3];
+    i_nal_type = i_nal_hdr&0x1f;
+    if( i_nal_type == 7 || i_nal_type == 8 )
+    {
+        /* XXX Why do you want to remove them ? It will break streaming with 
+         * SPS/PPS change (broadcast) ? */
+        return VLC_SUCCESS;
+    }
+
+    /* Skip start code */
+    p_data += 3;
+    i_data -= 3;
+
+    /* */
+    if( i_data <= i_max )
+    {
+        /* Single NAL unit packet */
+        block_t *out = block_New( p_stream, 12 + i_data );
+        out->i_dts    = i_dts;
+        out->i_length = i_length;
+
+        /* */
+        rtp_packetize_common( id, out, b_last, i_pts );
+        out->i_buffer = 12 + i_data;
+
+        memcpy( &out->p_buffer[12], p_data, i_data );
+
+        rtp_packetize_send( id, out );
+    }
+    else
+    {
+        /* FU-A Fragmentation Unit without interleaving */
+        const int i_count = ( i_data-1 + i_max-2 - 1 ) / (i_max-2);
+        int i;
+
+        p_data++;
+        i_data--;
+
+        for( i = 0; i < i_count; i++ )
+        {
+            const int i_payload = __MIN( i_data, i_max-2 );
+            block_t *out = block_New( p_stream, 12 + 2 + i_payload );
+            out->i_dts    = i_dts + i * i_length / i_count;
+            out->i_length = i_length / i_count;
+
+            /* */
+            rtp_packetize_common( id, out, (b_last && i_payload == i_data), i_pts );
+            out->i_buffer = 14 + i_payload;
+
+            /* FU indicator */
+            out->p_buffer[12] = 0x00 | (i_nal_hdr & 0x60) | 28;
+            /* FU header */
+            out->p_buffer[13] = ( i == 0 ? 0x80 : 0x00 ) | ( (i == i_count-1) ? 0x40 : 0x00 )  | i_nal_type;
+            memcpy( &out->p_buffer[14], p_data, i_payload );
+
+            rtp_packetize_send( id, out );
+
+            i_data -= i_payload;
+            p_data += i_payload;
+        }
+    }
+    return VLC_SUCCESS;
+}
+
+static int rtp_packetize_h264( sout_stream_t *p_stream, sout_stream_id_t *id,
+                               block_t *in )
+{
+    const uint8_t *p_buffer = in->p_buffer;
+    int i_buffer = in->i_buffer;
+
+    while( i_buffer > 4 && ( p_buffer[0] != 0 || p_buffer[1] != 0 || p_buffer[2] != 1 ) )
+    {
+        i_buffer--;
+        p_buffer++;
+    }
+
+    /* Split nal units */
+    while( i_buffer > 4 )
+    {
+        int i_offset;
+        int i_size = i_buffer;
+        int i_skip = i_buffer;
+
+        /* search nal end */
+        for( i_offset = 4; i_offset+2 < i_buffer ; i_offset++)
+        {
+            if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 1 )
+            {
+                /* we found another startcode */
+                i_size = i_offset - ( p_buffer[i_offset-1] == 0 ? 1 : 0);
+                i_skip = i_offset;
+                break;
+            } 
+        }
+        /* TODO add STAP-A to remove a lot of overhead with small slice/sei/... */
+        rtp_packetize_h264_nal( p_stream, id, p_buffer, i_size,
+                                (in->i_pts > 0 ? in->i_pts : in->i_dts), in->i_dts,
+                                (i_size >= i_buffer), in->i_length * i_size / in->i_buffer );
+
+        i_buffer -= i_skip;
+        p_buffer += i_skip;
+    }
+    return VLC_SUCCESS;
+}
+
 static int rtp_packetize_amr( sout_stream_t *p_stream, sout_stream_id_t *id,
                               block_t *in )
 {