dv.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:20k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * dv.c: Digital video/Firewire input (file: access plug-in)
- *****************************************************************************
- * Copyright (C) 2005 M2X
- * $Id: 665f83335ce3f919de4471b9a019131a5e6bf000 $
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_access.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_(
- "Caching value for DV streams. This "
- "value should be set in milliseconds." )
- vlc_module_begin ()
- set_description( N_("Digital Video (Firewire/ieee1394) input") )
- set_shortname( N_("DV") )
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_ACCESS )
- add_integer( "dv-caching", 60000 / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, true )
- change_safe()
- set_capability( "access", 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 void* Raw1394EventThread( vlc_object_t * );
- 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( 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;
- };
- #define ISOCHRONOUS_QUEUE_LENGTH 1000
- #define ISOCHRONOUS_MAX_PACKET_SIZE 4096
- /*****************************************************************************
- * 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 ];
- msg_Dbg( p_access, "opening device %s", psz_name );
- /* Set up p_access */
- access_InitFields( p_access );
- ACCESS_SET_CALLBACKS( NULL, Block, Control, NULL );
- 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;
- 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 );
- 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;
- }
- 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 for %s", psz_name );
- Close( p_this );
- free( psz_name );
- 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;
- /* 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 ) );
- if( !p_sys->p_ev )
- {
- msg_Err( p_access, "failed to create event thread for %s", psz_name );
- Close( p_this );
- free( psz_name );
- return VLC_EGENERIC;
- }
- 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 );
- vlc_thread_create( p_sys->p_ev, "dv event thread handler",
- Raw1394EventThread, VLC_THREAD_PRIORITY_OUTPUT );
- 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 */
- vlc_object_kill( p_sys->p_ev );
- if( p_sys->p_raw1394 )
- raw1394_iso_shutdown( p_sys->p_raw1394 );
- vlc_thread_join( p_sys->p_ev );
- vlc_mutex_destroy( &p_sys->p_ev->lock );
- /* 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;
- }
- vlc_object_release( 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;
- bool *pb_bool;
- int64_t *pi_64;
- switch( i_query )
- {
- /* */
- case ACCESS_CAN_PAUSE:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = true;
- break;
- case ACCESS_CAN_SEEK:
- case ACCESS_CAN_FASTSEEK:
- case ACCESS_CAN_CONTROL_PACE:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = 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:
- case ACCESS_GET_CONTENT_TYPE:
- 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 0
- if( !p_access->psz_demux )
- {
- free( p_access->psz_demux );
- p_access->psz_demux = strdup( "rawdv" );
- }
- #endif
- 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 void* 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;
- int canc = vlc_savecancel ();
- AVCPlay( p_access, p_sys->i_node );
- while( vlc_object_alive (p_sys->p_ev) )
- {
- 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( !vlc_object_alive (p_sys->p_ev) )
- 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 );
- vlc_restorecancel (canc);
- return NULL;
- }
- 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)
- {
- access_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 = (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 = 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 = 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: %m." );
- return VLC_EGENERIC;
- }
- if ( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
- {
- msg_Err( p_access, "raw1394 - failed to get port info: %m." );
- 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: %m." );
- return NULL;
- }
- if ( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
- {
- msg_Err( p_access, "raw1394 - failed to get port info: %m." );
- 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: %m." );
- 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", 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;
- }