Digital Video (Firewire/IEEE1394/I-Link) input for Camcorders

AUTHORS

@@ -332,6 +332,7 @@ D: Dutch Translation
 D: DVB-S/C/T on v4l2 API
 D: HD1000 port 
 D: OSD menu
+D: Digital Video (Firewire/IEEE1394/I-Link)
 S: Netherlands
 
 N: Arnaud Schauly

configure.ac

@@ -1485,6 +1485,128 @@ if test "${enable_livedotcom}" = "yes"; then
   fi
 fi
 
+dnl
+dnl dv module: digital video module check for libraw1394
+dnl
+AC_ARG_ENABLE(dv,
+[  --enable-dv             dv input module (default disabled)])
+if test "{enable_dv}" != "no"
+then
+  AC_ARG_WITH(dv-raw1394,
+  [    --with-dv-raw1394=PATH   libraw1394 headers and libraries])
+  AC_ARG_WITH(dv-raw1394-tree,
+  [    --with-dv-raw1394=PATH   libraw1394 tree for static linking])
+
+  if test -z "${with_dv_raw1394}" -a "${with_dv_raw1394}" != ""
+  then
+    AC_MSG_CHECKING(for raw1394 headers in ${with_dv_raw1394})
+    if test -f ${with_dv_raw1394}/include/libraw1394/raw1394.h
+    then
+      dnl  Use ${with_dv_raw1394}/include/libraw1394/raw1394.h
+      AC_MSG_RESULT(yes)
+      VLC_ADD_PLUGINS([access_dv])
+      VLC_ADD_LDFLAGS([access_dv],[-L${with_dv_raw1394}/lib -lraw1394 -lpthread])
+      VLC_ADD_CPPFLAGS([access_dv],[-I${with_dv_raw1394}/include])
+    else
+      dnl  No libraw1394 could be found, sorry
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot find ${with_dv_raw1394}/include/libraw1394/raw1394.h])
+    fi
+  else
+    AC_CHECK_HEADERS(libraw1394/raw1394.h,
+    [ VLC_ADD_PLUGINS([access_dv])
+        VLC_ADD_LDFLAGS([access_dv],[-lraw1394 -lavc1394])
+    ],[
+        if test -n "${enable_dv}"
+        then
+          AC_MSG_ERROR([cannot find libraw1394 headers])
+        fi
+    ])
+  fi
+
+  dnl Check for static linking of libraw1394
+  if test -z "${with_dv_raw1394_tree}" -a "${with_dv_raw1394_tree}" != ""
+  then
+    AC_MSG_CHECKING(for libraw1394.a in ${with_dv_raw1394_tree})
+    real_dv_raw1394_tree="`cd ${with_dv_raw1394_tree} 2>/dev/null && pwd`"
+    if test -z "${real_dv_raw1394_tree}"
+    then
+      dnl  The given directory can't be found
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot cd to ${real_dv_raw1394_tree}])
+    fi
+    if test -f "${real_dv_raw1394_tree}/src/.libs/libraw1394.a"
+    then
+      dnl  Use a custom libraw1394
+      AC_MSG_RESULT(${real_dv_raw1394_tree}/src/.libs/libraw1394.a)
+      VLC_ADD_BUILTINS([access_dv])
+      VLC_ADD_LDFLAGS([access_dv],[-L${real_dv_raw1394_tree}/src/.libs -lraw1394])
+      VLC_ADD_CPPFLAGS([access_dv],[-I${real_dv_raw1394_tree}])
+    else
+      dnl  The given libraw1394 wasn't built
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot find ${real_dv_raw1394_tree}/src/.libs/libraw1394.a, make sure you compiled libraw1394 in ${with_dv_raw1394_tree}])
+    fi
+  fi
+
+  dnl
+  dnl Check for libavc1394
+  dnl
+
+  AC_ARG_WITH(dv-avc1394,
+  [    --with-dv-avc1394=PATH   libavc1394 headers and libraries])
+  AC_ARG_WITH(dv-avc1394-tree,
+  [    --with-dv-avc1394=PATH   libavc1394 tree for static linking])
+
+  if test -z "${with_dv_avc1394}" -a "${with_dv_avc1394}" != ""
+  then
+    AC_MSG_CHECKING(for avc1394 headers in ${with_dv_avc1394})
+    if test -f ${with_dv_avc1394}/include/libavc1394/avc1394.h
+    then
+      dnl  Use ${with_dv_avc1394}/include/libavc1394/avc1394.h
+      AC_MSG_RESULT(yes)
+      VLC_ADD_LDFLAGS([access_dv],[-L${with_dv_avc1394}/lib -lavc1394 -lrom1394 -lpthread])
+      VLC_ADD_CPPFLAGS([access_dv],[-I${with_avc1394}/include])
+    else
+      dnl  No libavc1394 could be found, sorry
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot find ${with_dv_avc1394}/include/libavc1394/avc1394.h])
+    fi
+  else
+    AC_CHECK_HEADERS(libavc1394/avc1394.h,
+    [ VLC_ADD_LDFLAGS([access_dv],[-lavc1394 -lrom1394 -lpthread])
+    ],[
+        if test -n "${enable_dv}"
+        then
+          AC_MSG_ERROR([cannot find libavc1394 headers])
+        fi
+    ])
+  fi
+
+  dnl Check for static linking of libavc1394
+  if test -z "${with_dv_avc1394_tree}" -a "${with_dv_avc1394_tree}" != ""
+  then
+    AC_MSG_CHECKING(for libavc1394.a in ${with_dv_avc1394_tree})
+    real_dv_avc1394_tree="`cd ${with_dv_avc1394_tree} 2>/dev/null && pwd`"
+    if test -z "${real_dv_avc1394_tree}"
+    then
+      dnl  The given directory can't be found
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot cd to ${real_dv_avc1394_tree}])
+    fi
+    if test -f "${real_dv_avc1394_tree}/src/.libs/libavc1394.a"
+    then
+      dnl  Use a custom libavc1394
+      AC_MSG_RESULT(${real_dv_avc1394_tree}/src/.libs/libavc1394.a)
+      VLC_ADD_LDFLAGS([access_dv],[-L${real_dv_avc1394_tree}/src/.libs -lavc1394 -lrom1394 -lpthread])
+      VLC_ADD_CPPFLAGS([access_dv],[-I${real_dv_avc1394_tree}])
+    else
+      dnl  The given libavc1394 wasn't built
+      AC_MSG_RESULT(no)
+      AC_MSG_ERROR([cannot find ${real_dv_avc1394_tree}/src/.libs/libavc1394.a, make sure you compiled libavc1394 in ${with_dv_avc1394_tree}])
+    fi
+  fi
+fi
 
 dnl
 dnl dvdread module: check for libdvdread

modules/LIST

@@ -13,6 +13,8 @@ $Id$
 
  * access_directory: Access module to read files in a directory
 
+ * access_dv: Raw1394 Digital Video (Firewire/IEEE1394/I-Link) access module
+  
  * access_fake: Fake access to use for mosaic and other special streaming setups
 
  * access_file: File access module

modules/access/Modules.am

 SOURCES_access_file = file.c
 SOURCES_access_directory = directory.c
+SOURCES_access_dv = dv.c
 SOURCES_access_udp = udp.c
 SOURCES_access_tcp = tcp.c
 SOURCES_access_http = http.c

modules/access/dv.c

+/*****************************************************************************
+ * dv.c: Digital video/Firewire input (file: access plug-in)
+ *****************************************************************************
+ * Copyright (C) 2005 M2X
+ * $Id: dv.c 12318 2005-08-21 17:46:48Z jpsaman $
+ *
+ * Authors: Jean-Paul Saman <jpsaman at m2x dot nl>
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <vlc/vlc.h>
+#include <vlc/input.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#ifdef HAVE_SYS_TYPES_H
+#   include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_TIME_H
+#   include <sys/time.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#   include <sys/stat.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#   include <fcntl.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#elif defined( WIN32 ) && !defined( UNDER_CE )
+#   include <io.h>
+#endif
+
+#include <sys/poll.h>
+
+#include <libraw1394/raw1394.h>
+#include <libraw1394/csr.h>
+#include <libavc1394/avc1394.h>
+#include <libavc1394/avc1394_vcr.h>
+#include <libavc1394/rom1394.h>
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int  Open ( vlc_object_t * );
+static void Close( vlc_object_t * );
+static block_t *Block( access_t * );
+static int Control( access_t *, int, va_list );
+
+#define CACHING_TEXT N_("Caching value in ms")
+#define CACHING_LONGTEXT N_( \
+    "Allows you to modify the default caching value for file streams. This " \
+    "value should be set in millisecond units." )
+
+vlc_module_begin();
+    set_description( _("Digital Video (Firewire/ieee1394)  input") );
+    set_shortname( _("dv") );
+    set_category( CAT_INPUT );
+    set_subcategory( SUBCAT_INPUT_ACCESS );
+    add_integer( "dv-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
+    set_capability( "access2", 50 );
+    add_shortcut( "dv" );
+    add_shortcut( "dv1394" );
+    add_shortcut( "raw1394" );
+    set_callbacks( Open, Close );
+vlc_module_end();
+
+typedef struct
+{
+    VLC_COMMON_MEMBERS
+
+    access_t        *p_access;
+    vlc_mutex_t     lock;
+    block_t         *p_frame;
+    block_t         **pp_last;
+
+} event_thread_t;
+
+static int Raw1394EventThread( vlc_object_t * );
+static int Raw1394Handler( raw1394handle_t, int, size_t, quadlet_t * );
+
+static int Raw1394GetNumPorts( access_t *p_access );
+static raw1394handle_t Raw1394Open( access_t *, int );
+static void Raw1394Close( raw1394handle_t );
+
+static int DiscoverAVC( access_t *, int *, uint64_t );
+static raw1394handle_t AVCOpen( access_t *, int );
+static void AVCClose( access_t * );
+static int AVCResetHandler( raw1394handle_t, unsigned int );
+static int AVCPlay( access_t *, int );
+static int AVCPause( access_t *, int );
+static int AVCStop( access_t *, int );
+
+struct access_sys_t
+{
+    raw1394handle_t p_avc1394;
+    raw1394handle_t p_raw1394;
+    struct pollfd   raw1394_poll;
+
+    int i_cards;
+    int i_node;
+    int i_port;
+    int i_channel;
+    uint64_t i_guid;
+
+    /* event */
+    event_thread_t *p_ev;
+    vlc_mutex_t lock;
+    block_t *p_frame;
+};
+
+/*****************************************************************************
+ * Open: open the file
+ *****************************************************************************/
+static int Open( vlc_object_t *p_this )
+{
+    access_t     *p_access = (access_t*)p_this;
+    access_sys_t *p_sys;
+    char *psz_name = strdup( p_access->psz_path );
+
+    struct raw1394_portinfo port_inf[ 16 ];
+    iso_handler_t oldhandler;
+
+    msg_Dbg( p_access, "opening device %s", psz_name );
+
+    /* Set up p_access */
+    p_access->pf_read = NULL;
+    p_access->pf_block = Block;
+    p_access->pf_control = Control;
+    p_access->pf_seek = NULL;
+    p_access->info.i_update = 0;
+    p_access->info.i_size = 0;
+    p_access->info.i_pos = 0;
+    p_access->info.b_eof = VLC_FALSE;
+    p_access->info.b_prebuffered = VLC_FALSE;
+    p_access->info.i_title = 0;
+    p_access->info.i_seekpoint = 0;
+
+    p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
+    if( !p_sys )
+    {
+        free( psz_name );
+        return VLC_EGENERIC;
+    }
+
+    p_sys->i_cards = 0;
+    p_sys->i_node = 0;
+    p_sys->i_port = 0;
+    p_sys->i_guid = 0;
+    p_sys->i_channel = 63;
+    p_sys->p_raw1394 = NULL;
+    p_sys->p_avc1394 = NULL;
+    p_sys->p_frame = NULL;
+
+    vlc_mutex_init( p_access, &p_sys->lock );
+
+    p_sys->i_node = DiscoverAVC( p_access, &p_sys->i_port, p_sys->i_guid );
+    p_sys->p_avc1394 = AVCOpen( p_access, p_sys->i_port );
+    if( !p_sys->p_avc1394 )
+    {
+        msg_Err( p_access, "no Digital Video Control device found on %s", psz_name );
+        Close( p_this );
+        free( psz_name );
+        return VLC_EGENERIC;
+    }
+
+    p_sys->p_raw1394 = raw1394_new_handle();
+    if( !p_sys->p_raw1394 )
+    {
+        msg_Err( p_access, "no Digital Video device found on %s", psz_name );
+        Close( p_this );
+        free( psz_name );
+        return VLC_EGENERIC;
+    }
+
+    p_sys->i_cards = raw1394_get_port_info( p_sys->p_raw1394, port_inf, 16 );
+    if( p_sys->i_cards < 0 )
+    {
+        msg_Err( p_access, "failed to get port info for %s", psz_name );
+        Close( p_this );
+        free( psz_name );
+        return VLC_EGENERIC;
+    }
+
+    if( raw1394_set_port( p_sys->p_raw1394, p_sys->i_port ) < 0 )
+    {
+        msg_Err( p_access, "failed to set port info for %s", psz_name );
+        Close( p_this );
+        free( psz_name );
+        return VLC_EGENERIC;
+    }
+
+    oldhandler = raw1394_set_iso_handler( p_sys->p_raw1394,
+                                          p_sys->i_channel, Raw1394Handler );
+    raw1394_set_userdata( p_sys->p_raw1394, p_access );
+    raw1394_start_iso_rcv( p_sys->p_raw1394, p_sys->i_channel );
+
+    p_sys->raw1394_poll.fd = raw1394_get_fd( p_sys->p_raw1394 );
+    p_sys->raw1394_poll.events = POLLIN | POLLERR | POLLHUP | POLLPRI;
+
+    /* Update default_pts to a suitable value for udp access */
+    var_Create( p_access, "dv-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+
+    /* Now create our event thread catcher */
+    p_sys->p_ev = vlc_object_create( p_access, sizeof( event_thread_t ) );
+    p_sys->p_ev->p_frame = NULL;
+    p_sys->p_ev->pp_last = &p_sys->p_ev->p_frame;
+    p_sys->p_ev->p_access = p_access;
+    vlc_mutex_init( p_access, &p_sys->p_ev->lock );
+    vlc_thread_create( p_sys->p_ev, "dv event thread handler", Raw1394EventThread,
+                       VLC_THREAD_PRIORITY_INPUT, VLC_FALSE );
+
+    free( psz_name );
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close: free unused data structures
+ *****************************************************************************/
+static void Close( vlc_object_t *p_this )
+{
+    access_t     *p_access = (access_t*)p_this;
+    access_sys_t *p_sys = p_access->p_sys;
+
+    /* stop the event handler */
+    p_sys->p_ev->b_die = VLC_TRUE;
+
+    if( p_sys->p_raw1394)
+        raw1394_stop_iso_rcv( p_sys->p_raw1394, p_sys->i_channel );
+
+    vlc_mutex_destroy( &p_sys->p_ev->lock );
+    vlc_thread_join( p_sys->p_ev );
+
+    /* Cleanup frame data */
+    if( p_sys->p_ev->p_frame )
+    {
+        vlc_mutex_lock( &p_sys->p_ev->lock );
+        block_ChainRelease( p_sys->p_ev->p_frame );
+        p_sys->p_ev->p_frame = NULL;
+        p_sys->p_ev->pp_last = &p_sys->p_frame;
+        vlc_mutex_unlock( &p_sys->p_ev->lock );
+    }
+    vlc_object_destroy( p_sys->p_ev );
+
+    if( p_sys->p_frame )
+        block_ChainRelease( p_sys->p_frame );
+    if( p_sys->p_raw1394)
+        raw1394_destroy_handle( p_sys->p_raw1394 );
+
+    AVCClose( p_access );
+
+    vlc_mutex_destroy( &p_sys->lock );
+    free( p_sys );
+}
+
+/*****************************************************************************
+ * Control:
+ *****************************************************************************/
+static int Control( access_t *p_access, int i_query, va_list args )
+{
+    access_sys_t *p_sys = p_access->p_sys;
+    vlc_bool_t   *pb_bool;
+   // int          *pi_int;
+    int64_t      *pi_64;
+
+    switch( i_query )
+    {
+        /* */
+        case ACCESS_CAN_SEEK:
+        case ACCESS_CAN_FASTSEEK:
+        case ACCESS_CAN_PAUSE:
+        case ACCESS_CAN_CONTROL_PACE:
+            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
+            *pb_bool = VLC_FALSE;
+            break;
+
+        case ACCESS_GET_PTS_DELAY:
+            pi_64 = (int64_t*)va_arg( args, int64_t * );
+            *pi_64 = var_GetInteger( p_access, "dv-caching" ) * 1000;
+            break;
+
+        /* */
+        case ACCESS_SET_PAUSE_STATE:
+            AVCPause( p_access, p_sys->i_node );
+            break;
+
+        case ACCESS_GET_TITLE_INFO:
+        case ACCESS_SET_TITLE:
+        case ACCESS_SET_SEEKPOINT:
+        case ACCESS_SET_PRIVATE_ID_STATE:
+            return VLC_EGENERIC;
+
+        default:
+            msg_Warn( p_access, "unimplemented query in control" );
+            return VLC_EGENERIC;
+
+    }
+    return VLC_SUCCESS;
+}
+
+static block_t *Block( access_t *p_access )
+{
+    access_sys_t *p_sys = p_access->p_sys;
+    block_t *p_block = NULL;
+
+//     if( !p_access->psz_demux )
+//         p_access->psz_demux = strdup( "rawdv" );
+
+    vlc_mutex_lock( &p_sys->lock );
+    p_block = p_sys->p_frame;
+    //msg_Dbg( p_access, "sending frame %p",p_block );
+    p_sys->p_frame = NULL;
+    vlc_mutex_unlock( &p_sys->lock );
+
+    return p_block;
+}
+
+static int Raw1394EventThread( vlc_object_t *p_this )
+{
+    event_thread_t *p_ev = (event_thread_t *) p_this;
+    access_t *p_access = (access_t *) p_ev->p_access;
+    access_sys_t *p_sys = (access_sys_t *) p_access->p_sys;
+    int result = 0;
+
+    AVCPlay( p_access, p_sys->i_node );
+
+    vlc_thread_ready( p_this );
+
+    while( !p_sys->p_ev->b_die )
+    {
+        while( ( result = poll( &(p_sys->raw1394_poll), 1, 200 ) ) < 0 )
+        {
+            if( !( errno == EAGAIN || errno == EINTR ) )
+            {
+                perror( "error: raw1394 poll" );
+                msg_Err( p_access, "retrying device raw1394" );
+            }
+            if( p_sys->p_ev->b_die )
+                break;
+        }
+        if( p_sys->p_ev->b_die )
+                break;
+        if( result > 0 && ( ( p_sys->raw1394_poll.revents & POLLIN )
+                || ( p_sys->raw1394_poll.revents & POLLPRI ) ) )
+            result = raw1394_loop_iterate( p_sys->p_raw1394 );
+    }
+
+    AVCStop( p_access, p_sys->i_node );
+    return VLC_SUCCESS;
+}
+
+static int Raw1394Handler( raw1394handle_t handle, int channel, size_t length, quadlet_t *data )
+{
+    access_t *p_access = NULL;
+    access_sys_t *p_sys = NULL;
+    block_t *p_block = NULL;
+
+    p_access = (access_t *) raw1394_get_userdata( handle );
+    if( !p_access ) return 0;
+
+    p_sys = p_access->p_sys;
+
+    /* skip empty packets */
+    if ( length > 16 )
+    {
+        unsigned char * p = ( unsigned char* ) &data[ 3 ];
+        int section_type = p[ 0 ] >> 5;           /* section type is in bits 5 - 7 */
+        int dif_sequence = p[ 1 ] >> 4;           /* dif sequence number is in bits 4 - 7 */
+        int dif_block = p[ 2 ];
+
+        vlc_mutex_lock( &p_sys->p_ev->lock );
+
+        /* if we are at the beginning of a frame, we put the previous
+           frame in our output_queue. */
+        if( (section_type == 0) && (dif_sequence == 0) )
+        {
+            vlc_mutex_lock( &p_sys->lock );
+            if( p_sys->p_ev->p_frame )
+            {
+                /* Push current frame to p_access thread. */
+                //p_sys->p_ev->p_frame->i_pts = mdate();
+                block_ChainAppend( &p_sys->p_frame, p_sys->p_ev->p_frame );
+            }
+            /* reset list */
+            p_sys->p_ev->p_frame = block_New( p_access, 144000 );
+            p_sys->p_ev->pp_last = &p_sys->p_frame;
+            vlc_mutex_unlock( &p_sys->lock );
+        }
+
+        p_block = p_sys->p_ev->p_frame;
+        if( p_block )
+        {
+            switch ( section_type )
+            {
+            case 0:    /* 1 Header block */
+                /* p[3] |= 0x80; // hack to force PAL data */
+                memcpy( p_block->p_buffer + dif_sequence * 150 * 80, p, 480 );
+                break;
+
+            case 1:    /* 2 Subcode blocks */
+                memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 1 + dif_block ) * 80, p, 480 );
+                break;
+
+            case 2:    /* 3 VAUX blocks */
+                memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 3 + dif_block ) * 80, p, 480 );
+                break;
+
+            case 3:    /* 9 Audio blocks interleaved with video */
+                memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 6 + dif_block * 16 ) * 80, p, 480 );
+                break;
+
+            case 4:    /* 135 Video blocks interleaved with audio */
+                memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 7 + ( dif_block / 15 ) + dif_block ) * 80, p, 480 );
+                break;
+
+            default:    /* we can´t handle any other data */
+                block_Release( p_block );
+                p_block = NULL;
+                break;
+            }
+        }
+        vlc_mutex_unlock( &p_sys->p_ev->lock );
+    }
+    return 0;
+}
+
+/*
+ * Routing borrowed from dvgrab-1.8
+ * Copyright by Arne Schirmacher <dvgrab@schirmacher.de>
+ * Dan Dennedy <dan@dennedy.org> and others
+ */
+static int Raw1394GetNumPorts( access_t *p_access )
+{
+    int n_ports;
+    struct raw1394_portinfo pinf[ 16 ];
+    raw1394handle_t handle;
+
+    /* get a raw1394 handle */
+    if ( !( handle = raw1394_new_handle() ) )
+    {
+        msg_Err( p_access, "raw1394 - failed to get handle: %s.\n", strerror( errno ) );
+        return VLC_EGENERIC;
+    }
+
+    if ( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
+    {
+        msg_Err( p_access, "raw1394 - failed to get port info: %s.\n", strerror( errno ) );
+        raw1394_destroy_handle( handle );
+        return VLC_EGENERIC;
+    }
+    raw1394_destroy_handle( handle );
+
+    return n_ports;
+}
+
+static raw1394handle_t Raw1394Open( access_t *p_access, int port )
+{
+    int n_ports;
+    struct raw1394_portinfo pinf[ 16 ];
+    raw1394handle_t handle;
+
+    /* get a raw1394 handle */
+#ifdef RAW1394_V_0_8
+
+    handle = raw1394_get_handle();
+#else
+
+    handle = raw1394_new_handle();
+#endif
+
+    if ( !handle )
+    {
+        msg_Err( p_access, "raw1394 - failed to get handle: %s.\n", strerror( errno ) );
+        return NULL;
+    }
+
+    if ( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
+    {
+        msg_Err( p_access, "raw1394 - failed to get port info: %s.\n", strerror( errno ) );
+        raw1394_destroy_handle( handle );
+        return NULL;
+    }
+
+    /* tell raw1394 which host adapter to use */
+    if ( raw1394_set_port( handle, port ) < 0 )
+    {
+        msg_Err( p_access, "raw1394 - failed to set set port: %s.\n", strerror( errno ) );
+        return NULL;
+    }
+
+    return handle;
+}
+
+static void Raw1394Close( raw1394handle_t handle )
+{
+    raw1394_destroy_handle( handle );
+}
+
+static int DiscoverAVC( access_t *p_access, int* port, uint64_t guid )
+{
+    rom1394_directory rom_dir;
+    raw1394handle_t handle;
+    int device = -1;
+    int i, j = 0;
+    int m = Raw1394GetNumPorts( p_access );
+
+    if( *port >= 0 )
+    {
+        /* search on explicit port */
+        j = *port;
+        m = *port + 1;
+    }
+
+    for( ; j < m && device == -1; j++ )
+    {
+        handle = Raw1394Open( p_access, j );
+        for( i = 0; i < raw1394_get_nodecount( handle ); ++i )
+        {
+            if( guid != 0 )
+            {
+                /* select explicitly by GUID */
+                if( guid == rom1394_get_guid( handle, i ) )
+                {
+                    device = i;
+                    *port = j;
+                    break;
+                }
+            }
+            else
+            {
+                /* select first AV/C Tape Reccorder Player node */
+                if( rom1394_get_directory( handle, i, &rom_dir ) < 0 )
+                {
+                    msg_Err( p_access, "error reading config rom directory for node %d\n", i );
+                    continue;
+                }
+                if( ( rom1394_get_node_type( &rom_dir ) == ROM1394_NODE_TYPE_AVC ) &&
+                        avc1394_check_subunit_type( handle, i, AVC1394_SUBUNIT_TYPE_VCR ) )
+                {
+                    device = i;
+                    *port = j;
+                    break;
+                }
+            }
+        }
+        Raw1394Close( handle );
+    }
+
+    return device;
+}
+
+/*
+ * Handle AVC commands
+ */
+static raw1394handle_t AVCOpen( access_t *p_access, int port )
+{
+    access_sys_t *p_sys = p_access->p_sys;
+    int numcards;
+    struct raw1394_portinfo pinf[ 16 ];
+
+    p_sys->p_avc1394 = raw1394_new_handle();
+    if( !p_sys->p_avc1394 )
+        return NULL;
+
+    numcards = raw1394_get_port_info( p_sys->p_avc1394, pinf, 16 );
+    if( numcards < -1 )
+        return NULL;
+    if( raw1394_set_port( p_sys->p_avc1394, port ) < 0 )
+        return NULL;
+
+    raw1394_set_bus_reset_handler( p_sys->p_avc1394, AVCResetHandler );
+
+    return  p_sys->p_avc1394;
+}
+
+static void AVCClose( access_t *p_access )
+{
+    access_sys_t *p_sys = p_access->p_sys;
+
+    if( p_sys->p_avc1394 )
+    {
+        raw1394_destroy_handle( p_sys->p_avc1394 );
+        p_sys->p_avc1394 = NULL;
+    }
+}
+
+
+static int AVCResetHandler( raw1394handle_t handle, unsigned int generation )
+{
+    raw1394_update_generation( handle, generation );
+    return 0;
+}
+
+static int AVCPlay( access_t *p_access, int phyID )
+{
+    access_sys_t *p_sys = p_access->p_sys;
+
+    msg_Dbg( p_access, "send play command over Digital Video control channel" );
+    if( !p_sys->p_avc1394 )
+        return 0;
+
+    if( phyID >= 0 )
+    {
+        if( !avc1394_vcr_is_recording( p_sys->p_avc1394, phyID ) &&
+            avc1394_vcr_is_playing( p_sys->p_avc1394, phyID ) != AVC1394_VCR_OPERAND_PLAY_FORWARD )
+                avc1394_vcr_play( p_sys->p_avc1394, phyID );
+    }
+    return 0;
+}
+
+static int AVCPause( access_t *p_access, int phyID )
+{
+    access_sys_t *p_sys = p_access->p_sys;
+
+    if( !p_sys->p_avc1394 )
+        return 0;
+
+    if( phyID >= 0 )
+    {
+        if( !avc1394_vcr_is_recording( p_sys->p_avc1394, phyID ) &&
+            ( avc1394_vcr_is_playing( p_sys->p_avc1394, phyID ) != AVC1394_VCR_OPERAND_PLAY_FORWARD_PAUSE ) )
+                avc1394_vcr_pause( p_sys->p_avc1394, phyID );
+    }
+    return 0;
+}
+
+
+static int AVCStop( access_t *p_access, int phyID )
+{
+    access_sys_t *p_sys = p_access->p_sys;
+
+    msg_Dbg( p_access, "closing Digital Video control channel" );
+    if( !p_sys->p_avc1394 )
+        return 0;
+
+    if ( phyID >= 0 )
+        avc1394_vcr_stop( p_sys->p_avc1394, phyID );
+
+    return 0;
+}