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 #include <sys/types.h>
39 #elif defined( WIN32 ) && !defined( UNDER_CE )
45 #include <libraw1394/raw1394.h>
46 #include <libraw1394/csr.h>
47 #include <libavc1394/avc1394.h>
48 #include <libavc1394/avc1394_vcr.h>
49 #include <libavc1394/rom1394.h>
51 /*****************************************************************************
53 *****************************************************************************/
54 static int Open ( vlc_object_t * );
55 static void Close( vlc_object_t * );
56 static block_t *Block( access_t * );
57 static int Control( access_t *, int, va_list );
59 #define CACHING_TEXT N_("Caching value in ms")
60 #define CACHING_LONGTEXT N_( \
61 "Caching value for DV streams. This " \
62 "value should be set in milliseconds." )
65 set_description( N_("Digital Video (Firewire/ieee1394) input") )
66 set_shortname( N_("DV") )
67 set_category( CAT_INPUT )
68 set_subcategory( SUBCAT_INPUT_ACCESS )
69 add_integer( "dv-caching", 60000 / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, true )
71 set_capability( "access", 0 )
72 add_shortcut( "dv", "dv1394", "raw1394" )
73 set_callbacks( Open, Close )
87 static void* Raw1394EventThread( vlc_object_t * );
88 static enum raw1394_iso_disposition
89 Raw1394Handler(raw1394handle_t, unsigned char *,
90 unsigned int, unsigned char,
91 unsigned char, unsigned char, unsigned int,
94 static int Raw1394GetNumPorts( access_t *p_access );
95 static raw1394handle_t Raw1394Open( access_t *, int );
96 static void Raw1394Close( raw1394handle_t );
98 static int DiscoverAVC( access_t *, int *, uint64_t );
99 static raw1394handle_t AVCOpen( access_t *, int );
100 static void AVCClose( access_t * );
101 static int AVCResetHandler( raw1394handle_t, unsigned int );
102 static int AVCPlay( access_t *, int );
103 static int AVCPause( access_t *, int );
104 static int AVCStop( access_t *, int );
108 raw1394handle_t p_avc1394;
109 raw1394handle_t p_raw1394;
110 struct pollfd raw1394_poll;
119 event_thread_t *p_ev;
124 #define ISOCHRONOUS_QUEUE_LENGTH 1000
125 #define ISOCHRONOUS_MAX_PACKET_SIZE 4096
127 /*****************************************************************************
128 * Open: open the file
129 *****************************************************************************/
130 static int Open( vlc_object_t *p_this )
132 access_t *p_access = (access_t*)p_this;
135 struct raw1394_portinfo port_inf[ 16 ];
137 msg_Dbg( p_access, "opening device" );
139 /* Set up p_access */
140 access_InitFields( p_access );
141 ACCESS_SET_CALLBACKS( NULL, Block, Control, NULL );
143 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
151 p_sys->i_channel = 63;
152 p_sys->p_raw1394 = NULL;
153 p_sys->p_avc1394 = NULL;
154 p_sys->p_frame = NULL;
157 vlc_mutex_init( &p_sys->lock );
159 p_sys->i_node = DiscoverAVC( p_access, &p_sys->i_port, p_sys->i_guid );
160 if( p_sys->i_node < 0 )
162 msg_Err( p_access, "failed to open a Firewire (IEEE1394) connection" );
167 p_sys->p_avc1394 = AVCOpen( p_access, p_sys->i_port );
168 if( !p_sys->p_avc1394 )
170 msg_Err( p_access, "no Digital Video Control device found" );
175 p_sys->p_raw1394 = raw1394_new_handle();
176 if( !p_sys->p_raw1394 )
178 msg_Err( p_access, "no Digital Video device found" );
183 p_sys->i_cards = raw1394_get_port_info( p_sys->p_raw1394, port_inf, 16 );
184 if( p_sys->i_cards < 0 )
186 msg_Err( p_access, "failed to get port info" );
191 if( raw1394_set_port( p_sys->p_raw1394, p_sys->i_port ) < 0 )
193 msg_Err( p_access, "failed to set port info" );
198 if ( raw1394_iso_recv_init( p_sys->p_raw1394, Raw1394Handler,
199 ISOCHRONOUS_QUEUE_LENGTH, ISOCHRONOUS_MAX_PACKET_SIZE,
200 p_sys->i_channel, RAW1394_DMA_PACKET_PER_BUFFER, -1 ) < 0 )
202 msg_Err( p_access, "failed to init isochronous recv" );
207 raw1394_set_userdata( p_sys->p_raw1394, p_access );
208 raw1394_iso_recv_start( p_sys->p_raw1394, -1, -1, 0 );
210 p_sys->raw1394_poll.fd = raw1394_get_fd( p_sys->p_raw1394 );
211 p_sys->raw1394_poll.events = POLLIN | POLLPRI;
213 /* Update default_pts to a suitable value for udp access */
214 var_Create( p_access, "dv-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
216 /* Now create our event thread catcher */
217 p_sys->p_ev = vlc_object_create( p_access, sizeof( event_thread_t ) );
220 msg_Err( p_access, "failed to create event thread" );
225 p_sys->p_ev->p_frame = NULL;
226 p_sys->p_ev->pp_last = &p_sys->p_ev->p_frame;
227 p_sys->p_ev->p_access = p_access;
228 vlc_mutex_init( &p_sys->p_ev->lock );
229 vlc_thread_create( p_sys->p_ev, "dv event thread handler",
230 Raw1394EventThread, VLC_THREAD_PRIORITY_OUTPUT );
235 /*****************************************************************************
236 * Close: free unused data structures
237 *****************************************************************************/
238 static void Close( vlc_object_t *p_this )
240 access_t *p_access = (access_t*)p_this;
241 access_sys_t *p_sys = p_access->p_sys;
245 /* stop the event handler */
246 vlc_object_kill( p_sys->p_ev );
248 if( p_sys->p_raw1394 )
249 raw1394_iso_shutdown( p_sys->p_raw1394 );
251 vlc_thread_join( p_sys->p_ev );
252 vlc_mutex_destroy( &p_sys->p_ev->lock );
254 /* Cleanup frame data */
255 if( p_sys->p_ev->p_frame )
257 block_ChainRelease( p_sys->p_ev->p_frame );
258 p_sys->p_ev->p_frame = NULL;
259 p_sys->p_ev->pp_last = &p_sys->p_frame;
261 vlc_object_release( p_sys->p_ev );
265 block_ChainRelease( p_sys->p_frame );
266 if( p_sys->p_raw1394 )
267 raw1394_destroy_handle( p_sys->p_raw1394 );
269 AVCClose( p_access );
271 vlc_mutex_destroy( &p_sys->lock );
275 /*****************************************************************************
277 *****************************************************************************/
278 static int Control( access_t *p_access, int i_query, va_list args )
283 case ACCESS_CAN_PAUSE:
284 *va_arg( args, bool* ) = true;
287 case ACCESS_CAN_SEEK:
288 case ACCESS_CAN_FASTSEEK:
289 case ACCESS_CAN_CONTROL_PACE:
290 *va_arg( args, bool* ) = false;
293 case ACCESS_GET_PTS_DELAY:
294 *va_arg( args, int64_t * )
295 = var_GetInteger( p_access, "dv-caching" ) * 1000;
299 case ACCESS_SET_PAUSE_STATE:
300 AVCPause( p_access, p_access->p_sys->i_node );
303 case ACCESS_GET_TITLE_INFO:
304 case ACCESS_SET_TITLE:
305 case ACCESS_SET_SEEKPOINT:
306 case ACCESS_SET_PRIVATE_ID_STATE:
307 case ACCESS_GET_CONTENT_TYPE:
311 msg_Warn( p_access, "unimplemented query in control" );
318 static block_t *Block( access_t *p_access )
320 access_sys_t *p_sys = p_access->p_sys;
321 block_t *p_block = NULL;
323 vlc_mutex_lock( &p_sys->lock );
324 p_block = p_sys->p_frame;
325 //msg_Dbg( p_access, "sending frame %p",p_block );
326 p_sys->p_frame = NULL;
327 vlc_mutex_unlock( &p_sys->lock );
332 static void* Raw1394EventThread( vlc_object_t *p_this )
334 event_thread_t *p_ev = (event_thread_t *) p_this;
335 access_t *p_access = (access_t *) p_ev->p_access;
336 access_sys_t *p_sys = (access_sys_t *) p_access->p_sys;
338 int canc = vlc_savecancel ();
340 AVCPlay( p_access, p_sys->i_node );
342 while( vlc_object_alive (p_sys->p_ev) )
344 while( ( result = poll( &(p_sys->raw1394_poll), 1, 200 ) ) < 0 )
346 if( !( errno == EAGAIN || errno == EINTR ) )
348 perror( "error: raw1394 poll" );
349 msg_Err( p_access, "retrying device raw1394" );
352 if( !vlc_object_alive (p_sys->p_ev) )
354 if( result > 0 && ( ( p_sys->raw1394_poll.revents & POLLIN )
355 || ( p_sys->raw1394_poll.revents & POLLPRI ) ) )
356 result = raw1394_loop_iterate( p_sys->p_raw1394 );
359 AVCStop( p_access, p_sys->i_node );
360 vlc_restorecancel (canc);
364 static enum raw1394_iso_disposition
365 Raw1394Handler(raw1394handle_t handle, unsigned char *data,
366 unsigned int length, unsigned char channel,
367 unsigned char tag, unsigned char sy, unsigned int cycle,
368 unsigned int dropped)
370 access_t *p_access = NULL;
371 access_sys_t *p_sys = NULL;
372 block_t *p_block = NULL;
373 VLC_UNUSED(channel); VLC_UNUSED(tag);
374 VLC_UNUSED(sy); VLC_UNUSED(cycle); VLC_UNUSED(dropped);
376 p_access = (access_t *) raw1394_get_userdata( handle );
377 if( !p_access ) return 0;
379 p_sys = p_access->p_sys;
381 /* skip empty packets */
384 unsigned char * p = data + 8;
385 int section_type = p[ 0 ] >> 5; /* section type is in bits 5 - 7 */
386 int dif_sequence = p[ 1 ] >> 4; /* dif sequence number is in bits 4 - 7 */
387 int dif_block = p[ 2 ];
389 vlc_mutex_lock( &p_sys->p_ev->lock );
391 /* if we are at the beginning of a frame, we put the previous
392 frame in our output_queue. */
393 if( (section_type == 0) && (dif_sequence == 0) )
395 vlc_mutex_lock( &p_sys->lock );
396 if( p_sys->p_ev->p_frame )
398 /* Push current frame to p_access thread. */
399 //p_sys->p_ev->p_frame->i_pts = mdate();
400 block_ChainAppend( &p_sys->p_frame, p_sys->p_ev->p_frame );
403 p_sys->p_ev->p_frame = block_New( p_access, 144000 );
404 p_sys->p_ev->pp_last = &p_sys->p_frame;
405 vlc_mutex_unlock( &p_sys->lock );
408 p_block = p_sys->p_ev->p_frame;
411 switch ( section_type )
413 case 0: /* 1 Header block */
414 /* p[3] |= 0x80; // hack to force PAL data */
415 memcpy( p_block->p_buffer + dif_sequence * 150 * 80, p, 480 );
418 case 1: /* 2 Subcode blocks */
419 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 1 + dif_block ) * 80, p, 480 );
422 case 2: /* 3 VAUX blocks */
423 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 3 + dif_block ) * 80, p, 480 );
426 case 3: /* 9 Audio blocks interleaved with video */
427 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 6 + dif_block * 16 ) * 80, p, 480 );
430 case 4: /* 135 Video blocks interleaved with audio */
431 memcpy( p_block->p_buffer + dif_sequence * 150 * 80 + ( 7 + ( dif_block / 15 ) + dif_block ) * 80, p, 480 );
434 default: /* we canĀ“t handle any other data */
435 block_Release( p_block );
441 vlc_mutex_unlock( &p_sys->p_ev->lock );
447 * Routing borrowed from dvgrab-1.8
448 * Copyright by Arne Schirmacher <dvgrab@schirmacher.de>
449 * Dan Dennedy <dan@dennedy.org> and others
451 static int Raw1394GetNumPorts( access_t *p_access )
454 struct raw1394_portinfo pinf[ 16 ];
455 raw1394handle_t handle;
457 /* get a raw1394 handle */
458 if( !( handle = raw1394_new_handle() ) )
460 msg_Err( p_access, "raw1394 - failed to get handle: %m." );
464 if( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
466 msg_Err( p_access, "raw1394 - failed to get port info: %m." );
467 raw1394_destroy_handle( handle );
470 raw1394_destroy_handle( handle );
475 static raw1394handle_t Raw1394Open( access_t *p_access, int port )
478 struct raw1394_portinfo pinf[ 16 ];
479 raw1394handle_t handle;
481 /* get a raw1394 handle */
482 handle = raw1394_new_handle();
485 msg_Err( p_access, "raw1394 - failed to get handle: %m." );
489 if( ( n_ports = raw1394_get_port_info( handle, pinf, 16 ) ) < 0 )
491 msg_Err( p_access, "raw1394 - failed to get port info: %m." );
492 raw1394_destroy_handle( handle );
496 /* tell raw1394 which host adapter to use */
497 if( raw1394_set_port( handle, port ) < 0 )
499 msg_Err( p_access, "raw1394 - failed to set set port: %m." );
506 static void Raw1394Close( raw1394handle_t handle )
508 raw1394_destroy_handle( handle );
511 static int DiscoverAVC( access_t *p_access, int* port, uint64_t guid )
513 rom1394_directory rom_dir;
514 raw1394handle_t handle = NULL;
517 int m = Raw1394GetNumPorts( p_access );
521 /* search on explicit port */
526 for( ; j < m && device == -1; j++ )
528 handle = Raw1394Open( p_access, j );
532 for( i = 0; i < raw1394_get_nodecount( handle ); ++i )
536 /* select explicitly by GUID */
537 if( guid == rom1394_get_guid( handle, i ) )
546 /* select first AV/C Tape Reccorder Player node */
547 if( rom1394_get_directory( handle, i, &rom_dir ) < 0 )
549 msg_Err( p_access, "error reading config rom directory for node %d", i );
552 if( ( rom1394_get_node_type( &rom_dir ) == ROM1394_NODE_TYPE_AVC ) &&
553 avc1394_check_subunit_type( handle, i, AVC1394_SUBUNIT_TYPE_VCR ) )
561 Raw1394Close( handle );
568 * Handle AVC commands
570 static raw1394handle_t AVCOpen( access_t *p_access, int port )
572 access_sys_t *p_sys = p_access->p_sys;
573 struct raw1394_portinfo pinf[ 16 ];
576 p_sys->p_avc1394 = raw1394_new_handle();
577 if( !p_sys->p_avc1394 )
580 numcards = raw1394_get_port_info( p_sys->p_avc1394, pinf, 16 );
583 if( raw1394_set_port( p_sys->p_avc1394, port ) < 0 )
586 raw1394_set_bus_reset_handler( p_sys->p_avc1394, AVCResetHandler );
588 return p_sys->p_avc1394;
591 static void AVCClose( access_t *p_access )
593 access_sys_t *p_sys = p_access->p_sys;
595 if( p_sys->p_avc1394 )
597 raw1394_destroy_handle( p_sys->p_avc1394 );
598 p_sys->p_avc1394 = NULL;
602 static int AVCResetHandler( raw1394handle_t handle, unsigned int generation )
604 raw1394_update_generation( handle, generation );
608 static int AVCPlay( access_t *p_access, int phyID )
610 access_sys_t *p_sys = p_access->p_sys;
612 msg_Dbg( p_access, "send play command over Digital Video control channel" );
614 if( p_sys->p_avc1394 && phyID >= 0 )
616 if( !avc1394_vcr_is_recording( p_sys->p_avc1394, phyID ) &&
617 avc1394_vcr_is_playing( p_sys->p_avc1394, phyID ) != AVC1394_VCR_OPERAND_PLAY_FORWARD )
618 avc1394_vcr_play( p_sys->p_avc1394, phyID );
623 static int AVCPause( access_t *p_access, int phyID )
625 access_sys_t *p_sys = p_access->p_sys;
627 if( p_sys->p_avc1394 && phyID >= 0 )
629 if( !avc1394_vcr_is_recording( p_sys->p_avc1394, phyID ) &&
630 ( avc1394_vcr_is_playing( p_sys->p_avc1394, phyID ) != AVC1394_VCR_OPERAND_PLAY_FORWARD_PAUSE ) )
631 avc1394_vcr_pause( p_sys->p_avc1394, phyID );
637 static int AVCStop( access_t *p_access, int phyID )
639 access_sys_t *p_sys = p_access->p_sys;
641 msg_Dbg( p_access, "closing Digital Video control channel" );
643 if ( p_sys->p_avc1394 && phyID >= 0 )
644 avc1394_vcr_stop( p_sys->p_avc1394, phyID );