1 /*****************************************************************************
2 * dv.c: Digital video/Firewire input (file: access plug-in)
3 *****************************************************************************
4 * Copyright (C) 2005 M2X
7 * Authors: Jean-Paul Saman <jpsaman at m2x dot nl>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
33 #include <vlc_access.h>
36 #ifdef HAVE_SYS_TYPES_H
37 # include <sys/types.h>
39 #ifdef HAVE_SYS_TIME_H
40 # include <sys/time.h>
48 #elif defined( WIN32 ) && !defined( UNDER_CE )
54 #include <libraw1394/raw1394.h>
55 #include <libraw1394/csr.h>
56 #include <libavc1394/avc1394.h>
57 #include <libavc1394/avc1394_vcr.h>
58 #include <libavc1394/rom1394.h>
60 /*****************************************************************************
62 *****************************************************************************/
63 static int Open ( vlc_object_t * );
64 static void Close( vlc_object_t * );
65 static block_t *Block( access_t * );
66 static int Control( access_t *, int, va_list );
68 #define CACHING_TEXT N_("Caching value in ms")
69 #define CACHING_LONGTEXT N_( \
70 "Caching value for DV streams. This " \
71 "value should be set in milliseconds." )
74 set_description( N_("Digital Video (Firewire/ieee1394) input") )
75 set_shortname( N_("DV") )
76 set_category( CAT_INPUT )
77 set_subcategory( SUBCAT_INPUT_ACCESS )
78 add_integer( "dv-caching", 60000 / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, true )
80 set_capability( "access", 0 )
82 add_shortcut( "dv1394" )
83 add_shortcut( "raw1394" )
84 set_callbacks( Open, Close )
98 static void* Raw1394EventThread( vlc_object_t * );
99 static enum raw1394_iso_disposition
100 Raw1394Handler(raw1394handle_t, unsigned char *,
101 unsigned int, unsigned char,
102 unsigned char, unsigned char, unsigned int,
105 static int Raw1394GetNumPorts( access_t *p_access );
106 static raw1394handle_t Raw1394Open( access_t *, int );
107 static void Raw1394Close( raw1394handle_t );
109 static int DiscoverAVC( access_t *, int *, uint64_t );
110 static raw1394handle_t AVCOpen( access_t *, int );
111 static void AVCClose( access_t * );
112 static int AVCResetHandler( raw1394handle_t, unsigned int );
113 static int AVCPlay( access_t *, int );
114 static int AVCPause( access_t *, int );
115 static int AVCStop( access_t *, int );
119 raw1394handle_t p_avc1394;
120 raw1394handle_t p_raw1394;
121 struct pollfd raw1394_poll;
130 event_thread_t *p_ev;
135 #define ISOCHRONOUS_QUEUE_LENGTH 1000
136 #define ISOCHRONOUS_MAX_PACKET_SIZE 4096
138 /*****************************************************************************
139 * Open: open the file
140 *****************************************************************************/
141 static int Open( vlc_object_t *p_this )
143 access_t *p_access = (access_t*)p_this;
145 char *psz_name = strdup( p_access->psz_path );
147 struct raw1394_portinfo port_inf[ 16 ];
149 msg_Dbg( p_access, "opening device %s", psz_name );
151 /* Set up p_access */
152 access_InitFields( p_access );
153 ACCESS_SET_CALLBACKS( NULL, Block, Control, NULL );
155 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
166 p_sys->i_channel = 63;
167 p_sys->p_raw1394 = NULL;
168 p_sys->p_avc1394 = NULL;
169 p_sys->p_frame = NULL;
172 vlc_mutex_init( &p_sys->lock );
174 p_sys->i_node = DiscoverAVC( p_access, &p_sys->i_port, p_sys->i_guid );
175 if( p_sys->i_node < 0 )
177 msg_Err( p_access, "failed to open a Firewire (IEEE1394) connection" );
183 p_sys->p_avc1394 = AVCOpen( p_access, p_sys->i_port );
184 if( !p_sys->p_avc1394 )
186 msg_Err( p_access, "no Digital Video Control device found on %s", psz_name );
192 p_sys->p_raw1394 = raw1394_new_handle();
193 if( !p_sys->p_raw1394 )
195 msg_Err( p_access, "no Digital Video device found on %s", psz_name );
201 p_sys->i_cards = raw1394_get_port_info( p_sys->p_raw1394, port_inf, 16 );
202 if( p_sys->i_cards < 0 )
204 msg_Err( p_access, "failed to get port info for %s", psz_name );
210 if( raw1394_set_port( p_sys->p_raw1394, p_sys->i_port ) < 0 )
212 msg_Err( p_access, "failed to set port info for %s", psz_name );
218 if ( raw1394_iso_recv_init( p_sys->p_raw1394, Raw1394Handler,
219 ISOCHRONOUS_QUEUE_LENGTH, ISOCHRONOUS_MAX_PACKET_SIZE,
220 p_sys->i_channel, RAW1394_DMA_PACKET_PER_BUFFER, -1 ) < 0 )
222 msg_Err( p_access, "failed to init isochronous recv for %s", psz_name );
228 raw1394_set_userdata( p_sys->p_raw1394, p_access );
229 raw1394_iso_recv_start( p_sys->p_raw1394, -1, -1, 0 );
231 p_sys->raw1394_poll.fd = raw1394_get_fd( p_sys->p_raw1394 );
232 p_sys->raw1394_poll.events = POLLIN | POLLPRI;
234 /* Update default_pts to a suitable value for udp access */
235 var_Create( p_access, "dv-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
237 /* Now create our event thread catcher */
238 p_sys->p_ev = vlc_object_create( p_access, sizeof( event_thread_t ) );
241 msg_Err( p_access, "failed to create event thread for %s", psz_name );
247 p_sys->p_ev->p_frame = NULL;
248 p_sys->p_ev->pp_last = &p_sys->p_ev->p_frame;
249 p_sys->p_ev->p_access = p_access;
250 vlc_mutex_init( &p_sys->p_ev->lock );
251 vlc_thread_create( p_sys->p_ev, "dv event thread handler",
252 Raw1394EventThread, VLC_THREAD_PRIORITY_OUTPUT );
258 /*****************************************************************************
259 * Close: free unused data structures
260 *****************************************************************************/
261 static void Close( vlc_object_t *p_this )
263 access_t *p_access = (access_t*)p_this;
264 access_sys_t *p_sys = p_access->p_sys;
268 /* stop the event handler */
269 vlc_object_kill( p_sys->p_ev );
271 if( p_sys->p_raw1394 )
272 raw1394_iso_shutdown( p_sys->p_raw1394 );
274 vlc_thread_join( p_sys->p_ev );
275 vlc_mutex_destroy( &p_sys->p_ev->lock );
277 /* Cleanup frame data */
278 if( p_sys->p_ev->p_frame )
280 block_ChainRelease( p_sys->p_ev->p_frame );
281 p_sys->p_ev->p_frame = NULL;
282 p_sys->p_ev->pp_last = &p_sys->p_frame;
284 vlc_object_release( p_sys->p_ev );
288 block_ChainRelease( p_sys->p_frame );
289 if( p_sys->p_raw1394 )
290 raw1394_destroy_handle( p_sys->p_raw1394 );
292 AVCClose( p_access );
294 vlc_mutex_destroy( &p_sys->lock );
298 /*****************************************************************************
300 *****************************************************************************/
301 static int Control( access_t *p_access, int i_query, va_list args )
306 case ACCESS_CAN_PAUSE:
307 *va_arg( args, bool* ) = true;
310 case ACCESS_CAN_SEEK:
311 case ACCESS_CAN_FASTSEEK:
312 case ACCESS_CAN_CONTROL_PACE:
313 *va_arg( args, bool* ) = false;
316 case ACCESS_GET_PTS_DELAY:
317 *va_arg( args, int64_t * )
318 = (int64_t)var_GetInteger( p_access, "dv-caching" ) * 1000;
322 case ACCESS_SET_PAUSE_STATE:
323 AVCPause( p_access, p_access->p_sys->i_node );
326 case ACCESS_GET_TITLE_INFO:
327 case ACCESS_SET_TITLE:
328 case ACCESS_SET_SEEKPOINT:
329 case ACCESS_SET_PRIVATE_ID_STATE:
330 case ACCESS_GET_CONTENT_TYPE:
334 msg_Warn( p_access, "unimplemented query in control" );
341 static block_t *Block( access_t *p_access )
343 access_sys_t *p_sys = p_access->p_sys;
344 block_t *p_block = NULL;
346 vlc_mutex_lock( &p_sys->lock );
347 p_block = p_sys->p_frame;
348 //msg_Dbg( p_access, "sending frame %p",p_block );
349 p_sys->p_frame = NULL;
350 vlc_mutex_unlock( &p_sys->lock );
355 static void* Raw1394EventThread( vlc_object_t *p_this )
357 event_thread_t *p_ev = (event_thread_t *) p_this;
358 access_t *p_access = (access_t *) p_ev->p_access;
359 access_sys_t *p_sys = (access_sys_t *) p_access->p_sys;
361 int canc = vlc_savecancel ();
363 AVCPlay( p_access, p_sys->i_node );
365 while( vlc_object_alive (p_sys->p_ev) )
367 while( ( result = poll( &(p_sys->raw1394_poll), 1, 200 ) ) < 0 )
369 if( !( errno == EAGAIN || errno == EINTR ) )
371 perror( "error: raw1394 poll" );
372 msg_Err( p_access, "retrying device raw1394" );
375 if( !vlc_object_alive (p_sys->p_ev) )
377 if( result > 0 && ( ( p_sys->raw1394_poll.revents & POLLIN )
378 || ( p_sys->raw1394_poll.revents & POLLPRI ) ) )
379 result = raw1394_loop_iterate( p_sys->p_raw1394 );
382 AVCStop( p_access, p_sys->i_node );
383 vlc_restorecancel (canc);
387 static enum raw1394_iso_disposition
388 Raw1394Handler(raw1394handle_t handle, unsigned char *data,
389 unsigned int length, unsigned char channel,
390 unsigned char tag, unsigned char sy, unsigned int cycle,
391 unsigned int dropped)
393 access_t *p_access = NULL;
394 access_sys_t *p_sys = NULL;
395 block_t *p_block = NULL;
396 VLC_UNUSED(channel); VLC_UNUSED(tag);
397 VLC_UNUSED(sy); VLC_UNUSED(cycle); VLC_UNUSED(dropped);
399 p_access = (access_t *) raw1394_get_userdata( handle );
400 if( !p_access ) return 0;
402 p_sys = p_access->p_sys;
404 /* skip empty packets */
407 unsigned char * p = data + 8;
408 int section_type = p[ 0 ] >> 5; /* section type is in bits 5 - 7 */
409 int dif_sequence = p[ 1 ] >> 4; /* dif sequence number is in bits 4 - 7 */
410 int dif_block = p[ 2 ];
412 vlc_mutex_lock( &p_sys->p_ev->lock );
414 /* if we are at the beginning of a frame, we put the previous
415 frame in our output_queue. */
416 if( (section_type == 0) && (dif_sequence == 0) )
418 vlc_mutex_lock( &p_sys->lock );
419 if( p_sys->p_ev->p_frame )
421 /* Push current frame to p_access thread. */
422 //p_sys->p_ev->p_frame->i_pts = mdate();
423 block_ChainAppend( &p_sys->p_frame, p_sys->p_ev->p_frame );
426 p_sys->p_ev->p_frame = block_New( p_access, 144000 );
427 p_sys->p_ev->pp_last = &p_sys->p_frame;
428 vlc_mutex_unlock( &p_sys->lock );
431 p_block = p_sys->p_ev->p_frame;
434 switch ( section_type )
436 case 0: /* 1 Header block */
437 /* p[3] |= 0x80; // hack to force PAL data */
438 memcpy( p_block->p_buffer + dif_sequence * 150 * 80, p, 480 );
441 case 1: /* 2 Subcode blocks */
442 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 1 + dif_block ) * 80, p, 480 );
445 case 2: /* 3 VAUX blocks */
446 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 3 + dif_block ) * 80, p, 480 );
449 case 3: /* 9 Audio blocks interleaved with video */
450 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 6 + dif_block * 16 ) * 80, p, 480 );
453 case 4: /* 135 Video blocks interleaved with audio */
454 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 7 + ( dif_block / 15 ) + dif_block ) * 80, p, 480 );
457 default: /* we canĀ“t handle any other data */
458 block_Release( p_block );
464 vlc_mutex_unlock( &p_sys->p_ev->lock );
470 * Routing borrowed from dvgrab-1.8
471 * Copyright by Arne Schirmacher <dvgrab@schirmacher.de>
472 * Dan Dennedy <dan@dennedy.org> and others
474 static int Raw1394GetNumPorts( access_t *p_access )
477 struct raw1394_portinfo pinf[ 16 ];
478 raw1394handle_t handle;
480 /* get a raw1394 handle */
481 if( !( handle = raw1394_new_handle() ) )
483 msg_Err( p_access, "raw1394 - failed to get handle: %m." );
487 if( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
489 msg_Err( p_access, "raw1394 - failed to get port info: %m." );
490 raw1394_destroy_handle( handle );
493 raw1394_destroy_handle( handle );
498 static raw1394handle_t Raw1394Open( access_t *p_access, int port )
501 struct raw1394_portinfo pinf[ 16 ];
502 raw1394handle_t handle;
504 /* get a raw1394 handle */
505 handle = raw1394_new_handle();
508 msg_Err( p_access, "raw1394 - failed to get handle: %m." );
512 if( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
514 msg_Err( p_access, "raw1394 - failed to get port info: %m." );
515 raw1394_destroy_handle( handle );
519 /* tell raw1394 which host adapter to use */
520 if( raw1394_set_port( handle, port ) < 0 )
522 msg_Err( p_access, "raw1394 - failed to set set port: %m." );
529 static void Raw1394Close( raw1394handle_t handle )
531 raw1394_destroy_handle( handle );
534 static int DiscoverAVC( access_t *p_access, int* port, uint64_t guid )
536 rom1394_directory rom_dir;
537 raw1394handle_t handle = NULL;
540 int m = Raw1394GetNumPorts( p_access );
544 /* search on explicit port */
549 for( ; j < m && device == -1; j++ )
551 handle = Raw1394Open( p_access, j );
555 for( i = 0; i < raw1394_get_nodecount( handle ); ++i )
559 /* select explicitly by GUID */
560 if( guid == rom1394_get_guid( handle, i ) )
569 /* select first AV/C Tape Reccorder Player node */
570 if( rom1394_get_directory( handle, i, &rom_dir ) < 0 )
572 msg_Err( p_access, "error reading config rom directory for node %d", i );
575 if( ( rom1394_get_node_type( &rom_dir ) == ROM1394_NODE_TYPE_AVC ) &&
576 avc1394_check_subunit_type( handle, i, AVC1394_SUBUNIT_TYPE_VCR ) )
584 Raw1394Close( handle );
591 * Handle AVC commands
593 static raw1394handle_t AVCOpen( access_t *p_access, int port )
595 access_sys_t *p_sys = p_access->p_sys;
596 struct raw1394_portinfo pinf[ 16 ];
599 p_sys->p_avc1394 = raw1394_new_handle();
600 if( !p_sys->p_avc1394 )
603 numcards = raw1394_get_port_info( p_sys->p_avc1394, pinf, 16 );
606 if( raw1394_set_port( p_sys->p_avc1394, port ) < 0 )
609 raw1394_set_bus_reset_handler( p_sys->p_avc1394, AVCResetHandler );
611 return p_sys->p_avc1394;
614 static void AVCClose( access_t *p_access )
616 access_sys_t *p_sys = p_access->p_sys;
618 if( p_sys->p_avc1394 )
620 raw1394_destroy_handle( p_sys->p_avc1394 );
621 p_sys->p_avc1394 = NULL;
625 static int AVCResetHandler( raw1394handle_t handle, unsigned int generation )
627 raw1394_update_generation( handle, generation );
631 static int AVCPlay( access_t *p_access, int phyID )
633 access_sys_t *p_sys = p_access->p_sys;
635 msg_Dbg( p_access, "send play command over Digital Video control channel" );
637 if( p_sys->p_avc1394 && phyID >= 0 )
639 if( !avc1394_vcr_is_recording( p_sys->p_avc1394, phyID ) &&
640 avc1394_vcr_is_playing( p_sys->p_avc1394, phyID ) != AVC1394_VCR_OPERAND_PLAY_FORWARD )
641 avc1394_vcr_play( p_sys->p_avc1394, phyID );
646 static int AVCPause( access_t *p_access, int phyID )
648 access_sys_t *p_sys = p_access->p_sys;
650 if( p_sys->p_avc1394 && phyID >= 0 )
652 if( !avc1394_vcr_is_recording( p_sys->p_avc1394, phyID ) &&
653 ( avc1394_vcr_is_playing( p_sys->p_avc1394, phyID ) != AVC1394_VCR_OPERAND_PLAY_FORWARD_PAUSE ) )
654 avc1394_vcr_pause( p_sys->p_avc1394, phyID );
660 static int AVCStop( access_t *p_access, int phyID )
662 access_sys_t *p_sys = p_access->p_sys;
664 msg_Dbg( p_access, "closing Digital Video control channel" );
666 if ( p_sys->p_avc1394 && phyID >= 0 )
667 avc1394_vcr_stop( p_sys->p_avc1394, phyID );