videolan
/
vlc
mirror of https://gitea.goldendeliverer.com/videolan/vlc.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109462 Commits
7 Branches
132 Tags
718 MiB
 
 
 
 
 
 
Branch: master
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'master'
${ noResults }
vlc/modules/access/dv.c

642 lines
18 KiB
Raw Permalink Blame History

/*****************************************************************************
* dv.c: Digital video/Firewire input (file: access plug-in)
*****************************************************************************
* Copyright (C) 2005 M2X
*
* 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 Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>
#include <vlc_common.h>
#include <vlc_threads.h>
#include <vlc_poll.h>
#include <vlc_plugin.h>
#include <vlc_access.h>
#include <errno.h>
#include <sys/types.h>
#include <unistd.h>
#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( stream_t *, bool * );
static int Control( stream_t *, int, va_list );
vlc_module_begin ()
set_description( N_("Digital Video (Firewire/ieee1394) input") )
set_shortname( N_("DV") )
set_subcategory( SUBCAT_INPUT_ACCESS )
set_capability( "access", 0 )
add_shortcut( "dv", "raw1394" )
set_callbacks( Open, Close )
vlc_module_end ()
typedef struct
{
vlc_thread_t thread;
stream_t *p_access;
vlc_mutex_t lock;
block_t *p_frame;
block_t **pp_last;
} event_thread_t;
static void* Raw1394EventThread( void * );
static enum raw1394_iso_disposition
Raw1394Handler(raw1394handle_t, unsigned char *,
unsigned int, unsigned char,
unsigned char, unsigned char, unsigned int,
unsigned int);
static int Raw1394GetNumPorts( stream_t *p_access );
static raw1394handle_t Raw1394Open( stream_t *, int );
static void Raw1394Close( raw1394handle_t );
static int DiscoverAVC( stream_t *, int *, uint64_t );
static raw1394handle_t AVCOpen( stream_t *, int );
static void AVCClose( stream_t * );
static int AVCResetHandler( raw1394handle_t, unsigned int );
static int AVCPlay( stream_t *, int );
static int AVCPause( stream_t *, int );
static int AVCStop( stream_t *, int );
typedef struct
{
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;
} access_sys_t;
#define ISOCHRONOUS_QUEUE_LENGTH 1000
#define ISOCHRONOUS_MAX_PACKET_SIZE 4096
/*****************************************************************************
* Open: open the file
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
stream_t *p_access = (stream_t*)p_this;
access_sys_t *p_sys;
struct raw1394_portinfo port_inf[ 16 ];
msg_Dbg( p_access, "opening device" );
/* Set up p_access */
ACCESS_SET_CALLBACKS( NULL, Block, Control, NULL );
p_access->p_sys = p_sys = vlc_obj_malloc( p_this, sizeof( *p_sys ) );
if( !p_sys )
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;
p_sys->p_ev = NULL;
vlc_mutex_init( &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 );
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" );
Close( p_this );
return VLC_EGENERIC;
}
p_sys->p_raw1394 = raw1394_new_handle();
if( !p_sys->p_raw1394 )
{
msg_Err( p_access, "no Digital Video device found" );
Close( p_this );
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" );
Close( p_this );
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" );
Close( p_this );
return VLC_EGENERIC;
}
if ( raw1394_iso_recv_init( p_sys->p_raw1394, Raw1394Handler,
ISOCHRONOUS_QUEUE_LENGTH, ISOCHRONOUS_MAX_PACKET_SIZE,
p_sys->i_channel, RAW1394_DMA_PACKET_PER_BUFFER, -1 ) < 0 )
{
msg_Err( p_access, "failed to init isochronous recv" );
Close( p_this );
return VLC_EGENERIC;
}
raw1394_set_userdata( p_sys->p_raw1394, p_access );
raw1394_iso_recv_start( p_sys->p_raw1394, -1, -1, 0 );
p_sys->raw1394_poll.fd = raw1394_get_fd( p_sys->p_raw1394 );
p_sys->raw1394_poll.events = POLLIN | POLLPRI;
/* Now create our event thread catcher */
p_sys->p_ev = calloc( 1, sizeof( *p_sys->p_ev ) );
if( !p_sys->p_ev )
{
Close( p_this );
return VLC_ENOMEM;
}
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_sys->p_ev->lock );
if( vlc_clone( &p_sys->p_ev->thread, Raw1394EventThread, p_sys->p_ev ) )
{
msg_Err( p_access, "failed to clone event thread" );
Close( p_this );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: free unused data structures
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
stream_t *p_access = (stream_t*)p_this;
access_sys_t *p_sys = p_access->p_sys;
if( p_sys->p_ev )
{
/* stop the event handler */
vlc_cancel( p_sys->p_ev->thread );
if( p_sys->p_raw1394 )
raw1394_iso_shutdown( p_sys->p_raw1394 );
vlc_join( p_sys->p_ev->thread, NULL );
/* Cleanup frame data */
if( p_sys->p_ev->p_frame )
{
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;
}
free( 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 );
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( stream_t *p_access, int i_query, va_list args )
{
access_sys_t *sys = p_access->p_sys;
switch( i_query )
{
/* */
case STREAM_CAN_PAUSE:
*va_arg( args, bool* ) = true;
break;
case STREAM_CAN_SEEK:
case STREAM_CAN_FASTSEEK:
case STREAM_CAN_CONTROL_PACE:
*va_arg( args, bool* ) = false;
break;
case STREAM_GET_PTS_DELAY:
*va_arg( args, vlc_tick_t * ) =
VLC_TICK_FROM_MS( var_InheritInteger( p_access, "live-caching" ) );
break;
/* */
case STREAM_SET_PAUSE_STATE:
AVCPause( p_access, sys->i_node );
break;
default:
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static block_t *Block( stream_t *p_access, bool *restrict eof )
{
access_sys_t *p_sys = p_access->p_sys;
block_t *p_block = NULL;
vlc_mutex_lock( &p_sys->lock );
p_block = p_sys->p_frame;
//msg_Dbg( p_access, "sending frame %p", (void *)p_block );
p_sys->p_frame = NULL;
vlc_mutex_unlock( &p_sys->lock );
(void) eof;
return p_block;
}
static void Raw1394EventThreadCleanup( void *obj )
{
event_thread_t *p_ev = (event_thread_t *)obj;
access_sys_t *sys = p_ev->p_access->p_sys;
AVCStop( p_ev->p_access, sys->i_node );
}
static void* Raw1394EventThread( void *obj )
{
event_thread_t *p_ev = (event_thread_t *)obj;
stream_t *p_access = (stream_t *) p_ev->p_access;
access_sys_t *p_sys = (access_sys_t *) p_access->p_sys;
int result = 0;
int canc = vlc_savecancel();
vlc_thread_set_name("vlc-dv-1394");
AVCPlay( p_access, p_sys->i_node );
vlc_cleanup_push( Raw1394EventThreadCleanup, p_ev );
vlc_restorecancel( canc );
for( ;; )
{
while( ( result = poll( &p_sys->raw1394_poll, 1, -1 ) ) < 0 )
{
if( errno != EINTR )
msg_Err( p_access, "poll error: %s", vlc_strerror_c(errno) );
}
if( result > 0 && ( ( p_sys->raw1394_poll.revents & POLLIN )
|| ( p_sys->raw1394_poll.revents & POLLPRI ) ) )
{
canc = vlc_savecancel();
result = raw1394_loop_iterate( p_sys->p_raw1394 );
vlc_restorecancel( canc );
}
}
vlc_cleanup_pop();
vlc_assert_unreachable();
}
static enum raw1394_iso_disposition
Raw1394Handler(raw1394handle_t handle, unsigned char *data,
unsigned int length, unsigned char channel,
unsigned char tag, unsigned char sy, unsigned int cycle,
unsigned int dropped)
{
stream_t *p_access = NULL;
access_sys_t *p_sys = NULL;
block_t *p_block = NULL;
VLC_UNUSED(channel); VLC_UNUSED(tag);
VLC_UNUSED(sy); VLC_UNUSED(cycle); VLC_UNUSED(dropped);
p_access = (stream_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 = data + 8;
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 = vlc_tick_now();
block_ChainAppend( &p_sys->p_frame, p_sys->p_ev->p_frame );
}
/* reset list */
p_sys->p_ev->p_frame = block_Alloc( 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( stream_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",
vlc_strerror_c(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",
vlc_strerror_c(errno) );
raw1394_destroy_handle( handle );
return VLC_EGENERIC;
}
raw1394_destroy_handle( handle );
return n_ports;
}
static raw1394handle_t Raw1394Open( stream_t *p_access, int port )
{
int n_ports;
struct raw1394_portinfo pinf[ 16 ];
raw1394handle_t handle;
/* get a raw1394 handle */
handle = raw1394_new_handle();
if( !handle )
{
msg_Err( p_access, "raw1394 - failed to get handle: %s",
vlc_strerror_c(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",
vlc_strerror_c(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",
vlc_strerror_c(errno) );
return NULL;
}
return handle;
}
static void Raw1394Close( raw1394handle_t handle )
{
raw1394_destroy_handle( handle );
}
static int DiscoverAVC( stream_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", 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( stream_t *p_access, int port )
{
access_sys_t *p_sys = p_access->p_sys;
struct raw1394_portinfo pinf[ 16 ];
int numcards;
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( stream_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( stream_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 && 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( stream_t *p_access, int phyID )
{
access_sys_t *p_sys = p_access->p_sys;
if( p_sys->p_avc1394 && 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( stream_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 && phyID >= 0 )
avc1394_vcr_stop( p_sys->p_avc1394, phyID );
return 0;
}