live555.cpp

VLC Player Source Code

/*****************************************************************************
 * live555.cpp : LIVE555 Streaming Media support.
 *****************************************************************************
 * Copyright (C) 2003-2007 the VideoLAN team
 * $Id: aeba245bb46007e454d4ffd763171c6a32151221 $
 *
 * Authors: Laurent Aimar <[e-mail]>
 *          Derk-Jan Hartman <hartman at videolan. org>
 *          Derk-Jan Hartman <djhartman at m2x .dot. nl> for M2X
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/

/* For inttypes.h
 * Note: config.h may include inttypes.h, so make sure we define this option
 * early enough. */
#define __STDC_CONSTANT_MACROS 1

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <inttypes.h>

#include <vlc_common.h>
#include <vlc_plugin.h>

#include <vlc_demux.h>
#include <vlc_interface.h>
#include <vlc_network.h>
#include <vlc_url.h>

#include <iostream>
#include <limits.h>


#if defined( WIN32 )
#   include <winsock2.h>
#endif

#include "UsageEnvironment.hh"
#include "BasicUsageEnvironment.hh"
#include "GroupsockHelper.hh"
#include "liveMedia.hh"

extern "C" {
#include "../access/mms/asf.h"  /* Who said ugly ? */
}

using namespace std;

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
static int  Open ( vlc_object_t * );
static void Close( vlc_object_t * );

#define CACHING_TEXT N_("Caching value (ms)")
#define CACHING_LONGTEXT N_( \
    "Allows you to modify the default caching value for RTSP streams. This " \
    "value should be set in millisecond units." )

#define KASENNA_TEXT N_( "Kasenna RTSP dialect")
#define KASENNA_LONGTEXT N_( "Kasenna servers use an old and unstandard " \
    "dialect of RTSP. When you set this parameter, VLC will try this dialect "\
    "for communication. In this mode you cannot connect to normal RTSP servers." )

#define USER_TEXT N_("RTSP user name")
#define USER_LONGTEXT N_("Allows you to modify the user name that will " \
    "be used for authenticating the connection.")
#define PASS_TEXT N_("RTSP password")
#define PASS_LONGTEXT N_("Allows you to modify the password that will be " \
    "used for the connection.")

vlc_module_begin();
    set_description( N_("RTP/RTSP/SDP demuxer (using Live555)" ) );
    set_capability( "demux", 50 );
    set_shortname( "RTP/RTSP");
    set_callbacks( Open, Close );
    add_shortcut( "live" );
    add_shortcut( "livedotcom" );
    set_category( CAT_INPUT );
    set_subcategory( SUBCAT_INPUT_DEMUX );

    add_submodule();
        set_description( N_("RTSP/RTP access and demux") );
        add_shortcut( "rtsp" );
        add_shortcut( "sdp" );
        set_capability( "access_demux", 0 );
        set_callbacks( Open, Close );
        add_bool( "rtsp-tcp", 0, NULL,
                  N_("Use RTP over RTSP (TCP)"),
                  N_("Use RTP over RTSP (TCP)"), true );
        add_integer( "rtp-client-port", -1, NULL,
                  N_("Client port"),
                  N_("Port to use for the RTP source of the session"), true );
        add_bool( "rtsp-mcast", false, NULL,
                  N_("Force multicast RTP via RTSP"),
                  N_("Force multicast RTP via RTSP"), true );
        add_bool( "rtsp-http", 0, NULL,
                  N_("Tunnel RTSP and RTP over HTTP"),
                  N_("Tunnel RTSP and RTP over HTTP"), true );
        add_integer( "rtsp-http-port", 80, NULL,
                  N_("HTTP tunnel port"),
                  N_("Port to use for tunneling the RTSP/RTP over HTTP."),
                  true );
        add_integer("rtsp-caching", 4 * DEFAULT_PTS_DELAY / 1000, NULL,
                    CACHING_TEXT, CACHING_LONGTEXT, true );
        add_bool(   "rtsp-kasenna", false, NULL, KASENNA_TEXT,
                    KASENNA_LONGTEXT, true );
        add_string( "rtsp-user", NULL, NULL, USER_TEXT,
                    USER_LONGTEXT, true );
        add_string( "rtsp-pwd", NULL, NULL, PASS_TEXT,
                    PASS_LONGTEXT, true );
vlc_module_end();


/*****************************************************************************
 * Local prototypes
 *****************************************************************************/

typedef struct
{
    demux_t         *p_demux;
    MediaSubsession *sub;

    es_format_t     fmt;
    es_out_id_t     *p_es;

    bool            b_muxed;
    bool            b_quicktime;
    bool            b_asf;
    stream_t        *p_out_muxed;    /* for muxed stream */

    uint8_t         *p_buffer;
    unsigned int    i_buffer;

    bool            b_rtcp_sync;
    char            waiting;
    int64_t         i_pts;
    int64_t         i_npt;

} live_track_t;

struct timeout_thread_t
{
    VLC_COMMON_MEMBERS

    int64_t      i_remain;
    bool         b_handle_keep_alive;
    demux_sys_t  *p_sys;
};

struct demux_sys_t
{
    char            *p_sdp;    /* XXX mallocated */
    char            *psz_path; /* URL-encoded path */
    vlc_url_t       url;

    MediaSession     *ms;
    TaskScheduler    *scheduler;
    UsageEnvironment *env ;
    RTSPClient       *rtsp;

    /* */
    int              i_track;
    live_track_t     **track;   /* XXX mallocated */

    /* Weird formats */
    asf_header_t     asfh;
    stream_t         *p_out_asf;
    bool             b_real;

    /* */
    int64_t          i_pcr; /* The clock */
    int64_t          i_npt;
    int64_t          i_npt_length;
    int64_t          i_npt_start;

    /* timeout thread information */
    int              i_timeout;     /* session timeout value in seconds */
    bool             b_timeout_call;/* mark to send an RTSP call to prevent server timeout */
    timeout_thread_t *p_timeout;    /* the actual thread that makes sure we don't timeout */

    /* */
    bool             b_force_mcast;
    bool             b_multicast;   /* if one of the tracks is multicasted */
    bool             b_no_data;     /* if we never received any data */
    int              i_no_data_ti;  /* consecutive number of TaskInterrupt */

    char             event;

    bool             b_get_param;   /* Does the server support GET_PARAMETER */
};

static int Demux  ( demux_t * );
static int Control( demux_t *, int, va_list );

static int Connect      ( demux_t * );
static int SessionsSetup( demux_t * );
static int Play         ( demux_t *);
static int ParseASF     ( demux_t * );
static int RollOverTcp  ( demux_t * );

static void StreamRead  ( void *, unsigned int, unsigned int,
                          struct timeval, unsigned int );
static void StreamClose ( void * );
static void TaskInterrupt( void * );

static void* TimeoutPrevention( vlc_object_t * );

static unsigned char* parseH264ConfigStr( char const* configStr,
                                          unsigned int& configSize );

/*****************************************************************************
 * DemuxOpen:
 *****************************************************************************/
static int  Open ( vlc_object_t *p_this )
{
    demux_t     *p_demux = (demux_t*)p_this;
    demux_sys_t *p_sys = NULL;

    MediaSubsessionIterator *iter   = NULL;
    MediaSubsession         *sub    = NULL;
    int i, i_return;
    int i_error = VLC_EGENERIC;

    if( p_demux->s )
    {
        /* See if it looks like a SDP
           v, o, s fields are mandatory and in this order */
        const uint8_t *p_peek;
        if( stream_Peek( p_demux->s, &p_peek, 7 ) < 7 ) return VLC_EGENERIC;

        if( memcmp( p_peek, "v=0\r\n", 5 ) &&
            memcmp( p_peek, "v=0\n", 4 ) &&
            ( p_peek[0] < 'a' || p_peek[0] > 'z' || p_peek[1] != '=' ) )
        {
            return VLC_EGENERIC;
        }
    }
    else
    {
        var_Create( p_demux, "rtsp-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
    }

    p_demux->pf_demux  = Demux;
    p_demux->pf_control= Control;
    p_demux->p_sys     = p_sys = (demux_sys_t*)malloc( sizeof( demux_sys_t ) );
    if( !p_sys ) return VLC_ENOMEM;

    p_sys->p_sdp = NULL;
    p_sys->scheduler = NULL;
    p_sys->env = NULL;
    p_sys->ms = NULL;
    p_sys->rtsp = NULL;
    p_sys->i_track = 0;
    p_sys->track   = NULL;
    p_sys->i_pcr = 0;
    p_sys->i_npt = 0;
    p_sys->i_npt_start = 0;
    p_sys->i_npt_length = 0;
    p_sys->p_out_asf = NULL;
    p_sys->b_no_data = true;
    p_sys->i_no_data_ti = 0;
    p_sys->p_timeout = NULL;
    p_sys->i_timeout = 0;
    p_sys->b_timeout_call = false;
    p_sys->b_multicast = false;
    p_sys->b_real = false;
    p_sys->psz_path = strdup( p_demux->psz_path );
    p_sys->b_force_mcast = var_CreateGetBool( p_demux, "rtsp-mcast" );
    p_sys->b_get_param = false;

    /* parse URL for rtsp://[user:[passwd]@]serverip:port/options */
    vlc_UrlParse( &p_sys->url, p_sys->psz_path, 0 );

    if( ( p_sys->scheduler = BasicTaskScheduler::createNew() ) == NULL )
    {
        msg_Err( p_demux, "BasicTaskScheduler::createNew failed" );
        goto error;
    }
    if( !( p_sys->env = BasicUsageEnvironment::createNew(*p_sys->scheduler) ) )
    {
        msg_Err( p_demux, "BasicUsageEnvironment::createNew failed" );
        goto error;
    }

    if( strcasecmp( p_demux->psz_access, "sdp" ) )
    {
        char *p = p_sys->psz_path;
        while( (p = strchr( p, ' ' )) != NULL ) *p = '+';
    }

    if( p_demux->s != NULL )
    {
        /* Gather the complete sdp file */
        int     i_sdp       = 0;
        int     i_sdp_max   = 1000;
        uint8_t *p_sdp      = (uint8_t*) malloc( i_sdp_max );

        if( !p_sdp )
        {
            i_error = VLC_ENOMEM;
            goto error;
        }

        for( ;; )
        {
            int i_read = stream_Read( p_demux->s, &p_sdp[i_sdp],
                                      i_sdp_max - i_sdp - 1 );

            if( !vlc_object_alive (p_demux) || p_demux->b_error )
            {
                free( p_sdp );
                goto error;
            }

            if( i_read < 0 )
            {
                msg_Err( p_demux, "failed to read SDP" );
                free( p_sdp );
                goto error;
            }

            i_sdp += i_read;

            if( i_read < i_sdp_max - i_sdp - 1 )
            {
                p_sdp[i_sdp] = '\0';
                break;
            }

            i_sdp_max += 1000;
            p_sdp = (uint8_t*)realloc( p_sdp, i_sdp_max );
        }
        p_sys->p_sdp = (char*)p_sdp;
    }
    else if( ( p_demux->s == NULL ) &&
             !strcasecmp( p_demux->psz_access, "sdp" ) )
    {
        /* sdp:// link from SAP */
        p_sys->p_sdp = strdup( p_sys->psz_path );
    }
    else if( ( i_return = Connect( p_demux ) ) != VLC_SUCCESS )
    {
        msg_Err( p_demux, "Failed to connect with rtsp://%s", p_sys->psz_path );
        goto error;
    }

    if( p_sys->p_sdp == NULL )
    {
        msg_Err( p_demux, "Failed to retrieve the RTSP Session Description" );
        i_error = VLC_ENOMEM;
        goto error;
    }

    if( ( i_return = SessionsSetup( p_demux ) ) != VLC_SUCCESS )
    {
        msg_Err( p_demux, "Nothing to play for rtsp://%s", p_sys->psz_path );
        goto error;