X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Faccess_output%2Fudp.c;h=9cc5d11d510c5a41da68858b5b9c600760c70139;hb=a396b96cc7981eb6aee5d3fb2b8437147b645d22;hp=91c856ab4065802f68d4bfbb1f0622f8061f71a3;hpb=0b1c15a38655d23327a74c577fc7c1297b3eb84e;p=vlc diff --git a/modules/access_output/udp.c b/modules/access_output/udp.c index 91c856ab40..9cc5d11d51 100644 --- a/modules/access_output/udp.c +++ b/modules/access_output/udp.c @@ -25,7 +25,12 @@ /***************************************************************************** * Preamble *****************************************************************************/ -#include +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include #include #include @@ -49,33 +54,8 @@ #include -#if defined (HAVE_NETINET_UDPLITE_H) -# include -#elif defined (__linux__) -# define UDPLITE_SEND_CSCOV 10 -# define UDPLITE_RECV_CSCOV 11 -#endif - -#ifndef IPPROTO_UDPLITE -# define IPPROTO_UDPLITE 136 /* from IANA */ -#endif -#ifndef SOL_UDPLITE -# define SOL_UDPLITE IPPROTO_UDPLITE -#endif - #define MAX_EMPTY_BLOCKS 200 -#if defined(WIN32) || defined(UNDER_CE) -# define WINSOCK_STRERROR_SIZE 20 -static const char *winsock_strerror( char *buf ) -{ - snprintf( buf, WINSOCK_STRERROR_SIZE, "Winsock error %d", - WSAGetLastError( ) ); - buf[WINSOCK_STRERROR_SIZE - 1] = '\0'; - return buf; -} -#endif - /***************************************************************************** * Module descriptor *****************************************************************************/ @@ -95,46 +75,20 @@ static void Close( vlc_object_t * ); "of packets that will be sent at a time. It " \ "helps reducing the scheduling load on " \ "heavily-loaded systems." ) -#define RAW_TEXT N_("Raw write") -#define RAW_LONGTEXT N_("Packets will be sent " \ - "directly, without trying to fill the MTU (ie, " \ - "without trying to make the biggest possible packets " \ - "in order to improve streaming)." ) -#define RTCP_TEXT N_("RTCP Sender Report") -#define RTCP_LONGTEXT N_("Send RTCP Sender Report packets") -#define RTCP_PORT_TEXT N_("RTCP destination port number") -#define RTCP_PORT_LONGTEXT N_("Sends RTCP packets to this port (0 = auto)") -#define AUTO_MCAST_TEXT N_("Automatic multicast streaming") -#define AUTO_MCAST_LONGTEXT N_("Allocates an outbound multicast address " \ - "automatically.") -#define UDPLITE_TEXT N_("UDP-Lite") -#define UDPLITE_LONGTEXT N_("Use UDP-Lite/IP instead of normal UDP/IP") -#define CSCOV_TEXT N_("Checksum coverage") -#define CSCOV_LONGTEXT N_("Payload bytes covered by layer-4 checksum") vlc_module_begin(); - set_description( _("UDP stream output") ); + set_description( N_("UDP stream output") ); set_shortname( "UDP" ); set_category( CAT_SOUT ); set_subcategory( SUBCAT_SOUT_ACO ); - add_integer( SOUT_CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE ); + add_integer( SOUT_CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, true ); add_integer( SOUT_CFG_PREFIX "group", 1, NULL, GROUP_TEXT, GROUP_LONGTEXT, - VLC_TRUE ); + true ); add_obsolete_integer( SOUT_CFG_PREFIX "late" ); - add_bool( SOUT_CFG_PREFIX "raw", VLC_FALSE, NULL, RAW_TEXT, RAW_LONGTEXT, - VLC_TRUE ); - add_bool( SOUT_CFG_PREFIX "rtcp", VLC_FALSE, NULL, RAW_TEXT, RAW_LONGTEXT, - VLC_TRUE ); - add_integer( SOUT_CFG_PREFIX "rtcp-port", 0, NULL, RTCP_PORT_TEXT, - RTCP_PORT_LONGTEXT, VLC_TRUE ); - add_bool( SOUT_CFG_PREFIX "auto-mcast", VLC_FALSE, NULL, AUTO_MCAST_TEXT, - AUTO_MCAST_LONGTEXT, VLC_TRUE ); - add_bool( SOUT_CFG_PREFIX "udplite", VLC_FALSE, NULL, UDPLITE_TEXT, UDPLITE_LONGTEXT, VLC_TRUE ); - add_integer( SOUT_CFG_PREFIX "cscov", 12, NULL, CSCOV_TEXT, CSCOV_LONGTEXT, VLC_TRUE ); + add_obsolete_bool( SOUT_CFG_PREFIX "raw" ); set_capability( "sout access", 100 ); add_shortcut( "udp" ); - add_shortcut( "rtp" ); // Will work only with ts muxer set_callbacks( Open, Close ); vlc_module_end(); @@ -143,14 +97,8 @@ vlc_module_end(); *****************************************************************************/ static const char *const ppsz_sout_options[] = { - "auto-mcast", "caching", "group", - "raw", - "rtcp", - "rtcp-port", - "lite", - "cscov", NULL }; @@ -163,20 +111,17 @@ static const char *const ppsz_core_options[] = { NULL }; -static int Write ( sout_access_out_t *, block_t * ); -static int WriteRaw( sout_access_out_t *, block_t * ); +static ssize_t Write ( sout_access_out_t *, block_t * ); static int Seek ( sout_access_out_t *, off_t ); +static int Control( sout_access_out_t *, int, va_list ); -static void ThreadWrite( vlc_object_t * ); +static void* ThreadWrite( vlc_object_t * ); static block_t *NewUDPPacket( sout_access_out_t *, mtime_t ); -static const char *MakeRandMulticast (int family, char *buf, size_t buflen); typedef struct sout_access_thread_t { VLC_COMMON_MEMBERS - sout_instance_t *p_sout; - block_fifo_t *p_fifo; int i_handle; @@ -185,23 +130,12 @@ typedef struct sout_access_thread_t int i_group; block_fifo_t *p_empty_blocks; - - uint32_t sent_pkts; - uint32_t sent_bytes; - size_t rtcp_size; - int rtcp_handle; - uint8_t rtcp_data[28 + 8 + (2 * 257)]; - } sout_access_thread_t; struct sout_access_out_sys_t { int i_mtu; - - vlc_bool_t b_rtpts; // true for RTP/MP2 encapsulation - vlc_bool_t b_mtu_warning; - uint16_t i_sequence_number; - uint32_t i_ssrc; + bool b_mtu_warning; block_t *p_buffer; @@ -210,11 +144,6 @@ struct sout_access_out_sys_t }; #define DEFAULT_PORT 1234 -#define RTP_HEADER_LENGTH 12 - -static int OpenRTCP (sout_access_out_t *obj, int proto, uint16_t dport); -static void SendRTCP (sout_access_thread_t *obj, uint32_t timestamp); -static void CloseRTCP (sout_access_thread_t *obj); /***************************************************************************** * Open: open the file @@ -225,8 +154,7 @@ static int Open( vlc_object_t *p_this ) sout_access_out_sys_t *p_sys; char *psz_dst_addr = NULL; - int i_dst_port, i_rtcp_port = 0, proto = IPPROTO_UDP; - const char *protoname = "UDP"; + int i_dst_port; int i_handle; @@ -244,79 +172,50 @@ static int Open( vlc_object_t *p_this ) } if( !( p_sys = calloc ( 1, sizeof( sout_access_out_sys_t ) ) ) ) - { - msg_Err( p_access, "not enough memory" ); return VLC_ENOMEM; - } p_access->p_sys = p_sys; - if( p_access->psz_access != NULL ) - { - if (strcmp (p_access->psz_access, "rtp") == 0) - p_sys->b_rtpts = VLC_TRUE; - } - - if (var_GetBool (p_access, SOUT_CFG_PREFIX"lite")) - { - protoname = "UDP-Lite"; - proto = IPPROTO_UDPLITE; - } - i_dst_port = DEFAULT_PORT; - if (var_GetBool (p_access, SOUT_CFG_PREFIX"auto-mcast")) + char *psz_parser = psz_dst_addr = strdup( p_access->psz_path ); + if( !psz_dst_addr ) { - char buf[INET6_ADDRSTRLEN]; - if (MakeRandMulticast (AF_INET, buf, sizeof (buf)) != NULL) - psz_dst_addr = strdup (buf); + free( p_sys ); + return VLC_ENOMEM; } - else - { - char *psz_parser = psz_dst_addr = strdup( p_access->psz_path ); - if (psz_parser[0] == '[') - psz_parser = strchr (psz_parser, ']'); + if (psz_parser[0] == '[') + psz_parser = strchr (psz_parser, ']'); - psz_parser = strchr (psz_parser ?: psz_dst_addr, ':'); - if (psz_parser != NULL) - { - *psz_parser++ = '\0'; - i_dst_port = atoi (psz_parser); - } - } - - if (var_GetBool (p_access, SOUT_CFG_PREFIX"rtcp")) + psz_parser = strchr (psz_parser ?: psz_dst_addr, ':'); + if (psz_parser != NULL) { - /* This is really only for the RTP sout plugin. - * Doing RTCP for non RTP packet is NOT a good idea. */ - i_rtcp_port = var_GetInteger (p_access, SOUT_CFG_PREFIX"rtcp-port"); - if (i_rtcp_port == 0) - i_rtcp_port = i_dst_port + 1; + *psz_parser++ = '\0'; + i_dst_port = atoi (psz_parser); } p_sys->p_thread = vlc_object_create( p_access, sizeof( sout_access_thread_t ) ); if( !p_sys->p_thread ) { - msg_Err( p_access, "out of memory" ); free (p_sys); free (psz_dst_addr); return VLC_ENOMEM; } vlc_object_attach( p_sys->p_thread, p_access ); - p_sys->p_thread->p_sout = p_access->p_sout; p_sys->p_thread->b_die = 0; p_sys->p_thread->b_error= 0; - p_sys->p_thread->p_fifo = block_FifoNew( p_access ); - p_sys->p_thread->p_empty_blocks = block_FifoNew( p_access ); + p_sys->p_thread->p_fifo = block_FifoNew(); + p_sys->p_thread->p_empty_blocks = block_FifoNew(); - i_handle = net_ConnectDgram( p_this, psz_dst_addr, i_dst_port, -1, proto ); + i_handle = net_ConnectDgram( p_this, psz_dst_addr, i_dst_port, -1, + IPPROTO_UDP ); free (psz_dst_addr); if( i_handle == -1 ) { - msg_Err( p_access, "failed to create %s socket", protoname ); - vlc_object_destroy (p_sys->p_thread); + msg_Err( p_access, "failed to create raw UDP socket" ); + vlc_object_release (p_sys->p_thread); free (p_sys); return VLC_EGENERIC; } @@ -342,74 +241,27 @@ static int Open( vlc_object_t *p_this ) p_sys->p_thread->i_handle = i_handle; shutdown( i_handle, SHUT_RD ); - int cscov = var_GetInteger (p_access, SOUT_CFG_PREFIX"cscov"); - if (cscov) - { - switch (proto) - { -#ifdef UDPLITE_SEND_CSCOV - case IPPROTO_UDPLITE: - cscov += 8; - setsockopt (i_handle, SOL_UDPLITE, UDPLITE_SEND_CSCOV, - &(int){ cscov }, sizeof (cscov)); - break; -#endif -#ifdef DCCP_SOCKOPT_RECV_CSCOV - /* FIXME: ^^is this the right name ? */ - /* FIXME: is this inherited by accept() ? */ - case IPPROTO_DCCP: - cscov = ((cscov + 3) >> 2) + 1; - if (cscov > 15) - break; /* out of DCCP cscov range */ - setsockopt (i_handle, SOL_DCCP, DCCP_SOCKOPT_RECV_CSCOV, - &(int){ cscov }, sizeof (cscov)); - break; -#endif - } - } - p_sys->p_thread->i_caching = (int64_t)1000 * var_GetInteger( p_access, SOUT_CFG_PREFIX "caching"); p_sys->p_thread->i_group = var_GetInteger( p_access, SOUT_CFG_PREFIX "group" ); p_sys->i_mtu = var_CreateGetInteger( p_this, "mtu" ); - if( p_sys->b_rtpts && ( p_sys->i_mtu < RTP_HEADER_LENGTH ) ) - p_sys->i_mtu = 576 - 20 - 8; - - srand( (uint32_t)mdate()); - p_sys->p_buffer = NULL; - p_sys->i_sequence_number = rand()&0xffff; - p_sys->i_ssrc = rand()&0xffffffff; - - if (i_rtcp_port && OpenRTCP (p_access, proto, i_rtcp_port)) - { - msg_Err (p_access, "cannot initialize RTCP sender"); - net_Close (i_handle); - vlc_object_destroy (p_sys->p_thread); - free (p_sys); - return VLC_EGENERIC; - } + p_sys->p_buffer = NULL; if( vlc_thread_create( p_sys->p_thread, "sout write thread", ThreadWrite, - VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) ) + VLC_THREAD_PRIORITY_HIGHEST, false ) ) { - msg_Err( p_access->p_sout, "cannot spawn sout access thread" ); + msg_Err( p_access, "cannot spawn sout access thread" ); net_Close (i_handle); - vlc_object_destroy( p_sys->p_thread ); + vlc_object_release( p_sys->p_thread ); free (p_sys); return VLC_EGENERIC; } - if (var_GetBool (p_access, SOUT_CFG_PREFIX"raw")) - p_access->pf_write = WriteRaw; - else - p_access->pf_write = Write; - + p_access->pf_write = Write; p_access->pf_seek = Seek; - - /* update p_sout->i_out_pace_nocontrol */ - p_access->p_sout->i_out_pace_nocontrol++; + p_access->pf_control = Control; return VLC_SUCCESS; } @@ -424,6 +276,7 @@ static void Close( vlc_object_t * p_this ) int i; vlc_object_kill( p_sys->p_thread ); + for( i = 0; i < 10; i++ ) { block_t *p_dummy = block_New( p_access, p_sys->i_mtu ); @@ -441,21 +294,34 @@ static void Close( vlc_object_t * p_this ) if( p_sys->p_buffer ) block_Release( p_sys->p_buffer ); net_Close( p_sys->p_thread->i_handle ); - CloseRTCP (p_sys->p_thread); vlc_object_detach( p_sys->p_thread ); - vlc_object_destroy( p_sys->p_thread ); - /* update p_sout->i_out_pace_nocontrol */ - p_access->p_sout->i_out_pace_nocontrol--; + vlc_object_release( p_sys->p_thread ); msg_Dbg( p_access, "UDP access output closed" ); free( p_sys ); } +static int Control( sout_access_out_t *p_access, int i_query, va_list args ) +{ + (void)p_access; + + switch( i_query ) + { + case ACCESS_OUT_CONTROLS_PACE: + *va_arg( args, bool * ) = false; + break; + + default: + return VLC_EGENERIC; + } + return VLC_SUCCESS; +} + /***************************************************************************** * Write: standard write on a file descriptor. *****************************************************************************/ -static int Write( sout_access_out_t *p_access, block_t *p_buffer ) +static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer ) { sout_access_out_sys_t *p_sys = p_access->p_sys; int i_len = 0; @@ -470,7 +336,7 @@ static int Write( sout_access_out_t *p_access, block_t *p_buffer ) { msg_Warn( p_access, "packet size > MTU, you should probably " "increase the MTU" ); - p_sys->b_mtu_warning = VLC_TRUE; + p_sys->b_mtu_warning = true; } /* Check if there is enough space in the buffer */ @@ -479,7 +345,7 @@ static int Write( sout_access_out_t *p_access, block_t *p_buffer ) { if( p_sys->p_buffer->i_dts + p_sys->p_thread->i_caching < now ) { - msg_Dbg( p_access, "late packet for UDP input (" I64Fd ")", + msg_Dbg( p_access, "late packet for UDP input (%"PRId64 ")", now - p_sys->p_buffer->i_dts - p_sys->p_thread->i_caching ); } @@ -491,8 +357,6 @@ static int Write( sout_access_out_t *p_access, block_t *p_buffer ) while( p_buffer->i_buffer ) { int i_payload_size = p_sys->i_mtu; - if( p_sys->b_rtpts ) - i_payload_size -= RTP_HEADER_LENGTH; int i_write = __MIN( p_buffer->i_buffer, i_payload_size ); @@ -522,7 +386,7 @@ static int Write( sout_access_out_t *p_access, block_t *p_buffer ) /* Flush */ if( p_sys->p_buffer->i_dts + p_sys->p_thread->i_caching < now ) { - msg_Dbg( p_access, "late packet for udp input (" I64Fd ")", + msg_Dbg( p_access, "late packet for udp input (%"PRId64 ")", mdate() - p_sys->p_buffer->i_dts - p_sys->p_thread->i_caching ); } @@ -539,27 +403,6 @@ static int Write( sout_access_out_t *p_access, block_t *p_buffer ) return( p_sys->p_thread->b_error ? -1 : i_len ); } -/***************************************************************************** - * WriteRaw: write p_buffer without trying to fill mtu - *****************************************************************************/ -static int WriteRaw( sout_access_out_t *p_access, block_t *p_buffer ) -{ - sout_access_out_sys_t *p_sys = p_access->p_sys; - block_t *p_buf; - int i_len; - - while ( p_sys->p_thread->p_empty_blocks->i_depth >= MAX_EMPTY_BLOCKS ) - { - p_buf = block_FifoGet(p_sys->p_thread->p_empty_blocks); - block_Release( p_buf ); - } - - i_len = p_buffer->i_buffer; - block_FifoPut( p_sys->p_thread->p_fifo, p_buffer ); - - return( p_sys->p_thread->b_error ? -1 : i_len ); -} - /***************************************************************************** * Seek: seek to a specific location in a file *****************************************************************************/ @@ -577,15 +420,15 @@ static block_t *NewUDPPacket( sout_access_out_t *p_access, mtime_t i_dts) sout_access_out_sys_t *p_sys = p_access->p_sys; block_t *p_buffer; - while ( p_sys->p_thread->p_empty_blocks->i_depth > MAX_EMPTY_BLOCKS ) + while ( block_FifoCount( p_sys->p_thread->p_empty_blocks ) > MAX_EMPTY_BLOCKS ) { p_buffer = block_FifoGet( p_sys->p_thread->p_empty_blocks ); block_Release( p_buffer ); } - if( p_sys->p_thread->p_empty_blocks->i_depth == 0 ) + if( block_FifoCount( p_sys->p_thread->p_empty_blocks ) == 0 ) { - p_buffer = block_New( p_access->p_sout, p_sys->i_mtu ); + p_buffer = block_Alloc( p_sys->i_mtu ); } else { @@ -597,41 +440,20 @@ static block_t *NewUDPPacket( sout_access_out_t *p_access, mtime_t i_dts) p_buffer->i_dts = i_dts; p_buffer->i_buffer = 0; - if( p_sys->b_rtpts ) - { - mtime_t i_timestamp = p_buffer->i_dts * 9 / 100; - - /* add rtp/ts header */ - p_buffer->p_buffer[0] = 0x80; - p_buffer->p_buffer[1] = 33; // mpeg2-ts - - SetWBE( p_buffer->p_buffer + 2, p_sys->i_sequence_number ); - p_sys->i_sequence_number++; - SetDWBE( p_buffer->p_buffer + 4, i_timestamp ); - SetDWBE( p_buffer->p_buffer + 8, p_sys->i_ssrc ); - - p_buffer->i_buffer = RTP_HEADER_LENGTH; - } - return p_buffer; } /***************************************************************************** * ThreadWrite: Write a packet on the network at the good time. *****************************************************************************/ -static void ThreadWrite( vlc_object_t *p_this ) +static void* ThreadWrite( vlc_object_t *p_this ) { sout_access_thread_t *p_thread = (sout_access_thread_t*)p_this; mtime_t i_date_last = -1; mtime_t i_to_send = p_thread->i_group; int i_dropped_packets = 0; -#if defined(WIN32) || defined(UNDER_CE) - char strerror_buf[WINSOCK_STRERROR_SIZE]; -# define strerror( x ) winsock_strerror( strerror_buf ) -#endif - size_t rtcp_counter = 0; - while( !p_thread->b_die ) + for (;;) { block_t *p_pk; mtime_t i_date, i_sent; @@ -655,7 +477,7 @@ static void ThreadWrite( vlc_object_t *p_this ) if( i_date - i_date_last > 2000000 ) { if( !i_dropped_packets ) - msg_Dbg( p_thread, "mmh, hole ("I64Fd" > 2s) -> drop", + msg_Dbg( p_thread, "mmh, hole (%"PRId64" > 2s) -> drop", i_date - i_date_last ); block_FifoPut( p_thread->p_empty_blocks, p_pk ); @@ -667,29 +489,22 @@ static void ThreadWrite( vlc_object_t *p_this ) else if( i_date - i_date_last < -1000 ) { if( !i_dropped_packets ) - msg_Dbg( p_thread, "mmh, packets in the past ("I64Fd")", + msg_Dbg( p_thread, "mmh, packets in the past (%"PRId64")", i_date_last - i_date ); } } + block_cleanup_push( p_pk ); i_to_send--; if( !i_to_send || (p_pk->i_flags & BLOCK_FLAG_CLOCK) ) { mwait( i_date ); i_to_send = p_thread->i_group; } - ssize_t val = send( p_thread->i_handle, p_pk->p_buffer, - p_pk->i_buffer, 0 ); - if (val == -1) - { - msg_Warn( p_thread, "send error: %s", strerror(errno) ); - } - else - { - p_thread->sent_pkts++; - p_thread->sent_bytes += val; - rtcp_counter += val; - } + if ( send( p_thread->i_handle, p_pk->p_buffer, + p_pk->i_buffer, 0 ) == -1 ) + msg_Warn( p_thread, "send error: %m" ); + vlc_cleanup_pop(); if( i_dropped_packets ) { @@ -701,169 +516,14 @@ static void ThreadWrite( vlc_object_t *p_this ) i_sent = mdate(); if ( i_sent > i_date + 20000 ) { - msg_Dbg( p_thread, "packet has been sent too late (" I64Fd ")", + msg_Dbg( p_thread, "packet has been sent too late (%"PRId64 ")", i_sent - i_date ); } #endif - if ((p_thread->rtcp_handle != -1) && (p_pk->i_buffer >= 8)) - { // 1.25% rate limit: - if ((rtcp_counter / 80) >= p_thread->rtcp_size) - { - SendRTCP (p_thread, GetDWBE (p_pk->p_buffer + 4)); - rtcp_counter = 0; - } - } - block_FifoPut( p_thread->p_empty_blocks, p_pk ); i_date_last = i_date; } -} - - -static const char *MakeRandMulticast (int family, char *buf, size_t buflen) -{ - uint32_t rand = (getpid() & 0xffff) - | (uint32_t)(((mdate () >> 10) & 0xffff) << 16); - - switch (family) - { -#ifdef AF_INET6 - case AF_INET6: - { - struct in6_addr addr; - memcpy (&addr, "\xff\x38\x00\x00" "\x00\x00\x00\x00" - "\x00\x00\x00\x00", 12); - rand |= 0x80000000; - memcpy (addr.s6_addr + 12, &(uint32_t){ htonl (rand) }, 4); - return inet_ntop (family, &addr, buf, buflen); - } -#endif - - case AF_INET: - { - struct in_addr addr; - addr.s_addr = htonl ((rand & 0xffffff) | 0xe8000000); - return inet_ntop (family, &addr, buf, buflen); - } - } -#ifdef EAFNOSUPPORT - errno = EAFNOSUPPORT; -#endif return NULL; } - - -/* - * NOTE on RTCP implementation: - * - there is a single sender (us), no conferencing here! => n = sender = 1, - * - as such we need not bother to include Receiver Reports, - * - in unicast case, there is a single receiver => members = 1 + 1 = 2, - * and obviously n > 25% of members, - * - in multicast case, we do not want to maintain the number of receivers - * and we assume it is big (i.e. than 3) because that's what broadcasting is - * all about, - * - it is assumed we_sent = true (could be wrong), since we are THE sender, - * - we always send SR + SDES, while running, - * - FIXME: we do not implement separate rate limiting for SDES, - * - we do not implement any profile-specific extensions for the time being. - */ -static int OpenRTCP (sout_access_out_t *obj, int proto, uint16_t dport) -{ - sout_access_out_sys_t *p_sys = obj->p_sys; - uint8_t *ptr; - int fd; - - char src[NI_MAXNUMERICHOST], dst[NI_MAXNUMERICHOST]; - int sport; - - fd = obj->p_sys->p_thread->i_handle; - if (net_GetSockAddress (fd, src, &sport) - || net_GetPeerAddress (fd, dst, NULL)) - return VLC_EGENERIC; - - sport++; - fd = net_OpenDgram (obj, src, sport, dst, dport, AF_UNSPEC, proto); - if (fd == -1) - return VLC_EGENERIC; - - obj->p_sys->p_thread->rtcp_handle = fd; - - ptr = (uint8_t *)strchr (src, '%'); - if (ptr != NULL) - *ptr = '\0'; /* remove scope ID frop IPv6 addresses */ - - ptr = obj->p_sys->p_thread->rtcp_data; - - /* Sender report */ - ptr[0] = 2 << 6; /* V = 2, P = RC = 0 */ - ptr[1] = 200; /* payload type: Sender Report */ - SetWBE (ptr + 2, 6); /* length = 6 (7 double words) */ - SetDWBE (ptr + 4, p_sys->i_ssrc); - SetQWBE (ptr + 8, NTPtime64 ()); - ptr += 28; - /* timestamp and counter are handled later */ - - /* Source description */ - uint8_t *sdes = ptr; - ptr[0] = (2 << 6) | 1; /* V = 2, P = 0, SC = 1 */ - ptr[1] = 202; /* payload type: Source Description */ - uint8_t *lenptr = ptr + 2; - SetDWBE (ptr + 4, p_sys->i_ssrc); - ptr += 8; - - ptr[0] = 1; /* CNAME - mandatory */ - assert (NI_MAXNUMERICHOST <= 256); - ptr[1] = strlen (src); - memcpy (ptr + 2, src, ptr[1]); - ptr += ptr[1] + 2; - - static const char tool[] = PACKAGE_STRING; - ptr[0] = 6; /* TOOL */ - ptr[1] = (sizeof (tool) > 256) ? 255 : (sizeof (tool) - 1); - memcpy (ptr + 2, tool, ptr[1]); - ptr += ptr[1] + 2; - - while ((ptr - sdes) & 3) /* 32-bits padding */ - *ptr++ = 0; - SetWBE (lenptr, ptr - sdes); - - obj->p_sys->p_thread->rtcp_size = ptr - obj->p_sys->p_thread->rtcp_data; - return VLC_SUCCESS; -} - -static void CloseRTCP (sout_access_thread_t *obj) -{ - if (obj->rtcp_handle == -1) - return; - - uint8_t *ptr = obj->rtcp_data; - /* Bye */ - ptr[0] = (2 << 6) | 1; /* V = 2, P = 0, SC = 1 */ - ptr[1] = 203; /* payload type: Bye */ - SetWBE (ptr + 2, 1); - /* SSRC is already there :) */ - - /* We are THE sender, so we are more important than anybody else, so - * we can afford not to check bandwidth constraints here. */ - send (obj->rtcp_handle, obj->rtcp_data, 8, 0); - net_Close (obj->rtcp_handle); -} - -static void SendRTCP (sout_access_thread_t *obj, uint32_t timestamp) -{ - uint8_t *ptr = obj->rtcp_data; - - uint32_t last = GetDWBE (ptr + 8); // last RTCP SR send time - uint64_t now64 = NTPtime64 (); - if ((now64 >> 32) < (last + 5)) - return; // no more than one SR every 5 seconds - - SetQWBE (ptr + 8, now64); - SetDWBE (ptr + 16, timestamp); - SetDWBE (ptr + 20, obj->sent_pkts); - SetDWBE (ptr + 24, obj->sent_bytes); - - send (obj->rtcp_handle, ptr, obj->rtcp_size, 0); -}