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vlc/modules/access/dv.c

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/*****************************************************************************
* dv.c: Digital video/Firewire input (file: access plug-in)
*****************************************************************************
* Copyright (C) 2005 M2X
* $Id$
*
* 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", 60000 / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
set_capability( "access2", 0 );
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 );
if( p_sys->i_node < 0 )
{
msg_Err( p_access, "failed to open a Firewire (IEEE1394) connection" );
Close( p_this );
free( psz_name );
return VLC_EGENERIC;
}
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_OUTPUT, 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;
if( p_sys->p_ev )
{
/* 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;
int64_t *pi_64;
switch( i_query )
{
/* */
case ACCESS_CAN_SEEK:
case ACCESS_CAN_FASTSEEK:
case ACCESS_CAN_PAUSE:
pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
*pb_bool = VLC_TRUE;
break;
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 = NULL;
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 );
if( !handle )
return -1;
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;
}