modules/access/dc1394.c

   1 /*****************************************************************************
   2  * dc1394.c: IIDC (DCAM) FireWire input module
   3  *****************************************************************************
   4  * Copyright (C) 2006-2009 VideoLAN
   5  *
   6  * Authors: Xant Majere <xant@xant.net>
   7  *          Rob Shortt <rob@tvcentric.com> - libdc1394 V2 API updates
   8  *          Frederic Benoist <fridorik@gmail.com> - updates from Rob's work
   9  *
  10  *****************************************************************************
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU Lesser General Public License as published by
  14  * the Free Software Foundation; either version 2.1 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20  * GNU Lesser General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public License
  23  * along with this program; if not, write to the Free Software Foundation,
  24  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  25  *****************************************************************************/
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30
  31 #ifdef HAVE_CONFIG_H
  32 # include "config.h"
  33 #endif
  34
  35 #include <vlc_common.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_demux.h>
  38
  39 #include <dc1394/dc1394.h>
  40
  41 #define MAX_IEEE1394_HOSTS 32
  42 #define MAX_CAMERA_NODES 32
  43
  44 /*****************************************************************************
  45  * Module descriptor
  46  *****************************************************************************/
  47 static int  Open ( vlc_object_t * );
  48 static void Close( vlc_object_t * );
  49
  50 vlc_module_begin()
  51     set_shortname( N_("DC1394") )
  52     set_description( N_("IIDC Digital Camera (FireWire) input") )
  53     set_capability( "access", 0 )
  54     set_callbacks( Open, Close )
  55 vlc_module_end()
  56
  57 typedef struct
  58 {
  59     /* camera info */
  60     dc1394_t            *p_dccontext;
  61     uint32_t            num_cameras;
  62     dc1394camera_t      *camera;
  63     int                 selected_camera;
  64     uint64_t            selected_uid;
  65     uint32_t            dma_buffers;
  66     dc1394featureset_t  features;
  67     bool                reset_bus;
  68
  69     /* video info */
  70     char                *video_device;
  71     dc1394video_mode_t  video_mode;
  72     int                 width;
  73     int                 height;
  74     int                 frame_size;
  75     int                 frame_rate;
  76     unsigned int        brightness;
  77     unsigned int        focus;
  78     es_out_id_t         *p_es_video;
  79     dc1394video_frame_t *frame;
  80 } demux_sys_t;
  81
  82 /*****************************************************************************
  83  * Local prototypes
  84  *****************************************************************************/
  85 static int Demux( demux_t *p_demux );
  86 static int Control( demux_t *, int, va_list );
  87 static block_t *GrabVideo( demux_t *p_demux );
  88 static int process_options( demux_t *p_demux);
  89
  90 /*****************************************************************************
  91  * FindCameras
  92  *****************************************************************************/
  93 static int FindCamera( demux_sys_t *sys, demux_t *p_demux )
  94 {
  95     dc1394camera_list_t *list;
  96     int i_ret = VLC_EGENERIC;
  97
  98     msg_Dbg( p_demux, "Scanning for ieee1394 ports ..." );
  99
 100     if( dc1394_camera_enumerate (sys->p_dccontext, &list) != DC1394_SUCCESS )
 101     {
 102         msg_Err(p_demux, "Can not ennumerate cameras");
 103         goto end;
 104     }
 105
 106     if( list->num == 0 )
 107     {
 108         msg_Err(p_demux, "Can not find cameras");
 109         goto end;
 110     }
 111
 112     sys->num_cameras = list->num;
 113     msg_Dbg( p_demux, "Found %d dc1394 cameras.", list->num);
 114
 115     if( sys->selected_uid )
 116     {
 117         int found = 0;
 118         for( unsigned i = 0; i < sys->num_cameras; i++ )
 119         {
 120             if( list->ids[i].guid == sys->selected_uid )
 121             {
 122                 sys->camera = dc1394_camera_new(sys->p_dccontext,
 123                                                 list->ids[i].guid);
 124                 found++;
 125                 break;
 126             }
 127         }
 128         if( !found )
 129         {
 130             msg_Err( p_demux, "Can't find camera with uid : 0x%"PRIx64".",
 131                      sys->selected_uid );
 132             goto end;
 133         }
 134     }
 135     else if( sys->selected_camera >= (int)list->num )
 136     {
 137         msg_Err( p_demux, "There are not this many cameras. (%d/%d)",
 138                  sys->selected_camera, sys->num_cameras );
 139         goto end;
 140     }
 141     else if( sys->selected_camera >= 0 )
 142     {
 143         sys->camera = dc1394_camera_new(sys->p_dccontext,
 144                     list->ids[sys->selected_camera].guid);
 145     }
 146     else
 147     {
 148         sys->camera = dc1394_camera_new(sys->p_dccontext,
 149                                           list->ids[0].guid);
 150     }
 151
 152     i_ret = VLC_SUCCESS;
 153
 154 end:
 155     dc1394_camera_free_list (list);
 156     return i_ret;
 157 }
 158
 159 /*****************************************************************************
 160  * Open:
 161  *****************************************************************************/
 162 static int Open( vlc_object_t *p_this )
 163 {
 164     demux_t      *p_demux = (demux_t*)p_this;
 165     demux_sys_t  *p_sys;
 166     es_format_t   fmt;
 167     dc1394error_t res;
 168
 169     if (p_demux->out == NULL)
 170         return VLC_EGENERIC;
 171
 172     /* Set up p_demux */
 173     p_demux->pf_demux = Demux;
 174     p_demux->pf_control = Control;
 175
 176     p_demux->p_sys = p_sys = vlc_obj_calloc( p_this, 1, sizeof( demux_sys_t ) );
 177     if( !p_sys )
 178         return VLC_ENOMEM;
 179
 180     memset( &fmt, 0, sizeof( es_format_t ) );
 181
 182     /* DEFAULTS */
 183     p_sys->video_mode      = DC1394_VIDEO_MODE_640x480_YUV422;
 184     p_sys->width           = 640;
 185     p_sys->height          = 480;
 186     p_sys->frame_rate      = DC1394_FRAMERATE_15;
 187     p_sys->brightness      = 200;
 188     p_sys->focus           = 0;
 189     p_sys->p_dccontext     = NULL;
 190     p_sys->camera          = NULL;
 191     p_sys->selected_camera = -1;
 192     p_sys->dma_buffers     = 1;
 193     p_sys->reset_bus       = 0;
 194
 195     /* PROCESS INPUT OPTIONS */
 196     if( process_options(p_demux) != VLC_SUCCESS )
 197     {
 198         msg_Err( p_demux, "Bad MRL, please check the option line "
 199                           "(MRL was: %s)",
 200                           p_demux->psz_location );
 201         return VLC_EGENERIC;
 202     }
 203
 204     p_sys->p_dccontext = dc1394_new();
 205     if( !p_sys->p_dccontext )
 206     {
 207         msg_Err( p_demux, "Failed to initialise libdc1394");
 208         return VLC_EGENERIC;
 209     }
 210
 211     if( FindCamera( p_sys, p_demux ) != VLC_SUCCESS )
 212     {
 213         dc1394_free( p_sys->p_dccontext );
 214         return VLC_EGENERIC;
 215     }
 216
 217     if( !p_sys->camera )
 218     {
 219         msg_Err( p_demux, "No camera found !!" );
 220         dc1394_free( p_sys->p_dccontext );
 221         return VLC_EGENERIC;
 222     }
 223
 224     if( p_sys->reset_bus )
 225     {
 226         if( dc1394_reset_bus( p_sys->camera ) != DC1394_SUCCESS )
 227         {
 228             msg_Err( p_demux, "Unable to reset IEEE 1394 bus");
 229             Close( p_this );
 230             return VLC_EGENERIC;
 231         }
 232         else msg_Dbg( p_demux, "Successfully reset IEEE 1394 bus");
 233     }
 234
 235     if( dc1394_camera_reset( p_sys->camera ) != DC1394_SUCCESS )
 236     {
 237         msg_Err( p_demux, "Unable to reset camera");
 238         Close( p_this );
 239         return VLC_EGENERIC;
 240     }
 241
 242     if( dc1394_camera_print_info( p_sys->camera,
 243                   stderr ) != DC1394_SUCCESS )
 244     {
 245         msg_Err( p_demux, "Unable to print camera info");
 246         Close( p_this );
 247         return VLC_EGENERIC;
 248     }
 249
 250     if( dc1394_feature_get_all( p_sys->camera,
 251                 &p_sys->features ) != DC1394_SUCCESS )
 252     {
 253         msg_Err( p_demux, "Unable to get feature set");
 254         Close( p_this );
 255         return VLC_EGENERIC;
 256     }
 257     // TODO: only print features if verbosity increased
 258     dc1394_feature_print_all(&p_sys->features, stderr);
 259
 260 #if 0 //"Note that you need to execute this function only if you use exotic video1394 device names. /dev/video1394, /dev/video1394/* and /dev/video1394-* are automatically recognized." http://damien.douxchamps.net/ieee1394/libdc1394/v2.x/api/capture/
 261     if( p_sys->video_device )
 262     {
 263         if( dc1394_capture_set_device_filename( p_sys->camera,
 264                         p_sys->video_device ) != DC1394_SUCCESS )
 265         {
 266             msg_Err( p_demux, "Unable to set video device");
 267             Close( p_this );
 268             return VLC_EGENERIC;
 269         }
 270     }
 271 #endif
 272
 273     if( p_sys->focus )
 274     {
 275         if( dc1394_feature_set_value( p_sys->camera,
 276                       DC1394_FEATURE_FOCUS,
 277                       p_sys->focus ) != DC1394_SUCCESS )
 278         {
 279             msg_Err( p_demux, "Unable to set initial focus to %u",
 280                      p_sys->focus );
 281         }
 282         else
 283             msg_Dbg( p_demux, "Initial focus set to %u", p_sys->focus );
 284     }
 285
 286     if( dc1394_feature_set_value( p_sys->camera,
 287                   DC1394_FEATURE_FOCUS,
 288                   p_sys->brightness ) != DC1394_SUCCESS )
 289     {
 290         msg_Err( p_demux, "Unable to set initial brightness to %u",
 291                  p_sys->brightness );
 292     }
 293     else
 294         msg_Dbg( p_demux, "Initial brightness set to %u", p_sys->brightness );
 295
 296     if( dc1394_video_set_framerate( p_sys->camera,
 297                     p_sys->frame_rate ) != DC1394_SUCCESS )
 298     {
 299         msg_Err( p_demux, "Unable to set framerate");
 300         Close( p_this );
 301         return VLC_EGENERIC;
 302     }
 303
 304     if( dc1394_video_set_mode( p_sys->camera,
 305                    p_sys->video_mode ) != DC1394_SUCCESS )
 306     {
 307         msg_Err( p_demux, "Unable to set video mode");
 308         Close( p_this );
 309         return VLC_EGENERIC;
 310     }
 311
 312     if( dc1394_video_set_iso_speed( p_sys->camera,
 313                     DC1394_ISO_SPEED_400 ) != DC1394_SUCCESS )
 314     {
 315         msg_Err( p_demux, "Unable to set iso speed");
 316         Close( p_this );
 317         return VLC_EGENERIC;
 318     }
 319
 320     /* and setup capture */
 321     res = dc1394_capture_setup( p_sys->camera,
 322                     p_sys->dma_buffers,
 323                 DC1394_CAPTURE_FLAGS_DEFAULT);
 324     if( res != DC1394_SUCCESS )
 325     {
 326         if( res == DC1394_NO_BANDWIDTH )
 327         {
 328             msg_Err( p_demux ,"No bandwidth: try adding the "
 329              "\"resetbus\" option" );
 330         }
 331         else
 332         {
 333             msg_Err( p_demux ,"Unable to setup capture" );
 334         }
 335         Close( p_this );
 336         return VLC_EGENERIC;
 337     }
 338
 339     /* TODO - UYV444 chroma converter is missing, when it will be available
 340      * fourcc will become variable (and not just a fixed value for UYVY)
 341      */
 342     es_format_Init( &fmt, VIDEO_ES, VLC_CODEC_UYVY );
 343
 344     fmt.video.i_width = p_sys->width;
 345     fmt.video.i_height = p_sys->height;
 346
 347     msg_Dbg( p_demux, "Added new video es %4.4s %dx%d",
 348              (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 349
 350     p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
 351
 352     /* have the camera start sending us data */
 353     if( dc1394_video_set_transmission( p_sys->camera,
 354                        DC1394_ON ) != DC1394_SUCCESS )
 355     {
 356         msg_Err( p_demux, "Unable to start camera iso transmission" );
 357         dc1394_capture_stop( p_sys->camera );
 358         Close( p_this );
 359         return VLC_EGENERIC;
 360     }
 361     msg_Dbg( p_demux, "Set iso transmission" );
 362     // TODO: reread camera
 363     return VLC_SUCCESS;
 364 }
 365
 366 /*****************************************************************************
 367  * Close:
 368  *****************************************************************************/
 369 static void Close( vlc_object_t *p_this )
 370 {
 371     demux_t     *p_demux = (demux_t*)p_this;
 372     demux_sys_t *p_sys = p_demux->p_sys;
 373
 374     /* Stop data transmission */
 375     if( dc1394_video_set_transmission( p_sys->camera,
 376                        DC1394_OFF ) != DC1394_SUCCESS )
 377         msg_Err( p_demux, "Unable to stop camera iso transmission" );
 378
 379     /* Close camera */
 380     dc1394_capture_stop( p_sys->camera );
 381
 382     dc1394_camera_free(p_sys->camera);
 383     dc1394_free(p_sys->p_dccontext);
 384
 385     free( p_sys->video_device );
 386 }
 387
 388 #if 0
 389 static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
 390 {
 391     char u,v,y;
 392     u_char  *sc;
 393     u_char  *dc;
 394
 395     sc = (u_char *)src + (spos*2);
 396     if( spos % 2 )
 397     {
 398         v = sc[0];
 399         y = sc[1];
 400         u = *(sc -2);
 401     }
 402     else
 403     {
 404         u = sc[0];
 405         y = sc[1];
 406         v = sc[2];
 407     }
 408     dc = (u_char *)dst+(dpos*2);
 409     if( dpos % 2 )
 410     {
 411         dc[0] = v;
 412         dc[1] = y;
 413     }
 414     else
 415     {
 416         dc[0] = u;
 417         dc[1] = y;
 418     }
 419 }
 420 #endif
 421
 422 /*****************************************************************************
 423  * Demux:
 424  *****************************************************************************/
 425 static block_t *GrabVideo( demux_t *p_demux )
 426 {
 427     demux_sys_t *p_sys = p_demux->p_sys;
 428     block_t     *p_block = NULL;
 429
 430     if( dc1394_capture_dequeue( p_sys->camera,
 431                 DC1394_CAPTURE_POLICY_WAIT,
 432                 &p_sys->frame ) != DC1394_SUCCESS )
 433     {
 434         msg_Err( p_demux, "Unable to capture a frame" );
 435         return NULL;
 436     }
 437
 438     p_block = block_Alloc( p_sys->frame->size[0] * p_sys->frame->size[1] * 2 );
 439     if( !p_block )
 440     {
 441         msg_Err( p_demux, "Can not get block" );
 442         return NULL;
 443     }
 444
 445     if( !p_sys->frame->image )
 446     {
 447         msg_Err (p_demux, "Capture buffer empty");
 448         block_Release( p_block );
 449         return NULL;
 450     }
 451
 452     memcpy( p_block->p_buffer, (const char *)p_sys->frame->image,
 453             p_sys->width * p_sys->height * 2 );
 454
 455     p_block->i_pts = p_block->i_dts = vlc_tick_now();
 456     dc1394_capture_enqueue( p_sys->camera, p_sys->frame );
 457     return p_block;
 458 }
 459
 460 static int Demux( demux_t *p_demux )
 461 {
 462     demux_sys_t *p_sys = p_demux->p_sys;
 463     block_t *p_blockv = NULL;
 464
 465     /* Try grabbing video frame */
 466     p_blockv = GrabVideo( p_demux );
 467
 468     if( !p_blockv )
 469     {
 470         /* Sleep so we do not consume all the cpu, 10ms seems
 471          * like a good value (100fps)
 472          */
 473         vlc_tick_sleep( VLC_HARD_MIN_SLEEP );
 474         return 1;
 475     }
 476
 477     if( p_blockv )
 478     {
 479         es_out_SetPCR( p_demux->out, p_blockv->i_pts );
 480         es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
 481     }
 482     return 1;
 483 }
 484
 485 /*****************************************************************************
 486  * Control:
 487  *****************************************************************************/
 488 static int Control( demux_t *p_demux, int i_query, va_list args )
 489 {
 490     VLC_UNUSED( p_demux );
 491     switch( i_query )
 492     {
 493         /* Special for access_demux */
 494         case DEMUX_CAN_PAUSE:
 495         case DEMUX_CAN_SEEK:
 496         case DEMUX_CAN_CONTROL_PACE:
 497             *va_arg( args, bool * ) = false;
 498             return VLC_SUCCESS;
 499
 500         case DEMUX_GET_PTS_DELAY:
 501             *va_arg( args, vlc_tick_t * ) = DEFAULT_PTS_DELAY;
 502             return VLC_SUCCESS;
 503
 504         case DEMUX_GET_TIME:
 505             *va_arg( args, vlc_tick_t * ) = vlc_tick_now();
 506             return VLC_SUCCESS;
 507
 508         /* TODO implement others */
 509         default:
 510             return VLC_EGENERIC;
 511     }
 512     return VLC_EGENERIC;
 513 }
 514
 515 static int process_options( demux_t *p_demux )
 516 {
 517     demux_sys_t *p_sys = p_demux->p_sys;
 518     char *psz_dup;
 519     char *psz_parser;
 520     char *token = NULL;
 521     char *state = NULL;
 522     const char *in_size = NULL;
 523     const char *in_fmt = NULL;
 524     float rate_f;
 525
 526     psz_dup = strdup( p_demux->psz_location );
 527     psz_parser = psz_dup;
 528     for( token = strtok_r( psz_parser,":",&state); token;
 529          token = strtok_r( NULL, ":", &state ) )
 530     {
 531         if( strncmp( token, "size=", strlen("size=") ) == 0 )
 532         {
 533             token += strlen("size=");
 534             if( strncmp( token, "160x120", 7 ) == 0 )
 535             {
 536                 /* TODO - UYV444 chroma converter is needed ...
 537                     * video size of 160x120 is temporarily disabled
 538                     */
 539                 msg_Err( p_demux,
 540                     "video size of 160x120 is actually disabled for lack of"
 541                     "chroma support. It will be released ASAP, until then try "
 542                     "an higher size (320x240 and 640x480 are fully supported)" );
 543                 free(psz_dup);
 544                 return VLC_EGENERIC;
 545 #if 0
 546                 in_size = "160x120";
 547                 p_sys->width = 160;
 548                 p_sys->height = 120;
 549 #endif
 550             }
 551             else if( strncmp( token, "320x240", 7 ) == 0 )
 552             {
 553                 in_size = "320x240";
 554                 p_sys->width = 320;
 555                 p_sys->height = 240;
 556             }
 557             else if( strncmp( token, "640x480", 7 ) == 0 )
 558             {
 559                 in_size = "640x480";
 560                 p_sys->width = 640;
 561                 p_sys->height = 480;
 562             }
 563             else
 564             {
 565                 msg_Err( p_demux,
 566                     "This program currently suppots frame sizes of"
 567                     " 160x120, 320x240, and 640x480. "
 568                     "Please specify one of them. You have specified %s.",
 569                     token );
 570                 free(psz_dup);
 571                 return VLC_EGENERIC;
 572             }
 573             msg_Dbg( p_demux, "Requested video size : %s",token );
 574         }
 575         if( strncmp( token, "format=", strlen("format=") ) == 0 )
 576         {
 577             token += strlen("format=");
 578             if( strncmp( token, "YUV411", 6 ) == 0 )
 579             {
 580                 in_fmt = "YUV411";
 581             }
 582             else if( strncmp( token, "YUV422", 6 ) == 0 )
 583             {
 584                 in_fmt = "YUV422";
 585             }
 586             else if( strncmp( token, "YUV444", 6 ) == 0 )
 587             {
 588                 in_fmt = "YUV444";
 589             }
 590             else if( strncmp( token, "RGB8", 4 ) == 0 )
 591             {
 592                 in_fmt = "RGB8";
 593             }
 594             else if( strncmp( token, "MONO8", 5 ) == 0 )
 595             {
 596                 in_fmt = "MONO8";
 597             }
 598             else if( strncmp( token, "MONO16", 6 ) == 0 )
 599             {
 600                 in_fmt = "MONO16";
 601             }
 602             else
 603             {
 604                 msg_Err( p_demux, "Invalid format %s.", token );
 605                 free(psz_dup);
 606                 return VLC_EGENERIC;
 607             }
 608             msg_Dbg( p_demux, "Requested video format : %s", token );
 609         }
 610         else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
 611         {
 612             token += strlen("fps=");
 613             sscanf( token, "%g", &rate_f );
 614             if( rate_f == 1.875 )
 615                 p_sys->frame_rate = DC1394_FRAMERATE_1_875;
 616             else if( rate_f == 3.75 )
 617                 p_sys->frame_rate = DC1394_FRAMERATE_3_75;
 618             else if( rate_f == 7.5 )
 619                 p_sys->frame_rate = DC1394_FRAMERATE_7_5;
 620             else if( rate_f == 15 )
 621                 p_sys->frame_rate = DC1394_FRAMERATE_15;
 622             else if( rate_f == 30 )
 623                 p_sys->frame_rate = DC1394_FRAMERATE_30;
 624             else if( rate_f == 60 )
 625                 p_sys->frame_rate = DC1394_FRAMERATE_60;
 626             else
 627             {
 628                 msg_Err( p_demux ,
 629                     "This program supports framerates of"
 630                     " 1.875, 3.75, 7.5, 15, 30, 60. "
 631                     "Please specify one of them. You have specified %s.",
 632                     token);
 633                 free(psz_dup);
 634                 return VLC_EGENERIC;
 635             }
 636             msg_Dbg( p_demux, "Requested frame rate : %s",token );
 637         }
 638         else if( strncmp( token, "resetbus", strlen( "resetbus" ) ) == 0 )
 639         {
 640             token += strlen("resetbus");
 641             p_sys->reset_bus = 1;
 642         }
 643         else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
 644         {
 645             int nr = 0;
 646             token += strlen("brightness=");
 647             nr = sscanf( token, "%u", &p_sys->brightness);
 648             if( nr != 1 )
 649             {
 650                 msg_Err( p_demux, "Bad brightness value '%s', "
 651                                   "must be an unsigned integer.",
 652                                   token );
 653                 free(psz_dup);
 654                 return VLC_EGENERIC;
 655             }
 656         }
 657         else if( strncmp( token, "buffers=", strlen( "buffers=" ) ) == 0 )
 658         {
 659             int nr = 0;
 660             int in_buf = 0;
 661             token += strlen("buffers=");
 662             nr = sscanf( token, "%d", &in_buf);
 663             if( nr != 1 || in_buf < 1 )
 664             {
 665                 msg_Err( p_demux, "DMA buffers must be 1 or greater." );
 666                 free(psz_dup);
 667                 return VLC_EGENERIC;
 668             }
 669             else p_sys->dma_buffers = in_buf;
 670         }
 671 #if 0
 672         // NOTE: If controller support is added back, more logic will needed to be added
 673         //       after the cameras are scanned.
 674         else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
 675         {
 676             int nr = 0;
 677             token += strlen("controller=");
 678             nr = sscanf( token, "%u", &p_sys->controller );
 679             if( nr != 1)
 680             {
 681                 msg_Err(p_demux, "Bad controller value '%s', "
 682                                  "must be an unsigned integer.",
 683                                  token );
 684                 return VLC_EGENERIC;
 685             }
 686         }
 687 #endif
 688         else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
 689         {
 690             int nr = 0;
 691             token += strlen("camera=");
 692             nr = sscanf(token,"%u",&p_sys->selected_camera);
 693             if( nr != 1)
 694             {
 695                 msg_Err( p_demux, "Bad camera number '%s', "
 696                                   "must be an unsigned integer.",
 697                                   token );
 698                 free(psz_dup);
 699                 return VLC_EGENERIC;
 700             }
 701         }
 702         else if( strncmp( token, "vdev=", strlen( "vdev=" ) ) == 0)
 703         {
 704             token += strlen("vdev=");
 705             p_sys->video_device = strdup(token);
 706             msg_Dbg( p_demux, "Using video device '%s'.", token );
 707         }
 708         else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
 709         {
 710             int nr = 0;
 711             token += strlen("focus=");
 712             nr = sscanf( token, "%u", &p_sys->focus );
 713             if( nr != 1 )
 714             {
 715                 msg_Err( p_demux, "Bad focus value '%s', "
 716                                   "must be an unsigned integer.",
 717                                   token );
 718                 free(psz_dup);
 719                 return VLC_EGENERIC;
 720             }
 721         }
 722         else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
 723         {
 724             token += strlen("uid=");
 725             sscanf( token, "0x%"SCNx64, &p_sys->selected_uid );
 726         }
 727     }
 728
 729     // The mode is a combination of size and format and not every format
 730     // is supported by every size.
 731     if( in_size)
 732     {
 733         if( strcmp( in_size, "160x120") == 0)
 734         {
 735             if( in_fmt && (strcmp( in_fmt, "YUV444") != 0) )
 736                 msg_Err(p_demux, "160x120 only supports YUV444 - forcing");
 737             p_sys->video_mode = DC1394_VIDEO_MODE_160x120_YUV444;
 738         }
 739         else if( strcmp( in_size, "320x240") == 0)
 740         {
 741             if( in_fmt && (strcmp( in_fmt, "YUV422") != 0) )
 742                 msg_Err(p_demux, "320x240 only supports YUV422 - forcing");
 743             p_sys->video_mode = DC1394_VIDEO_MODE_320x240_YUV422;
 744         }
 745     }
 746     else
 747     { // 640x480 default
 748         if( in_fmt )
 749         {
 750             if( strcmp( in_fmt, "RGB8") == 0)
 751                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_RGB8;
 752             else if( strcmp( in_fmt, "MONO8") == 0)
 753                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO8;
 754             else if( strcmp( in_fmt, "MONO16") == 0)
 755                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO16;
 756             else if( strcmp( in_fmt, "YUV411") == 0)
 757                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV411;
 758             else // YUV422 default
 759                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 760         }
 761         else // YUV422 default
 762             p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 763     }
 764
 765     free( psz_dup );
 766     return VLC_SUCCESS;
 767 }