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_demux", 10 )
  54     set_callbacks( Open, Close )
  55 vlc_module_end()
  56
  57 struct demux_sys_t
  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 };
  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( strncmp(p_demux->psz_access, "dc1394", 6) != 0 )
 170         return VLC_EGENERIC;
 171
 172     /* Set up p_demux */
 173     p_demux->pf_demux = Demux;
 174     p_demux->pf_control = Control;
 175     p_demux->info.i_update = 0;
 176     p_demux->info.i_title = 0;
 177     p_demux->info.i_seekpoint = 0;
 178
 179     p_demux->p_sys = p_sys = vlc_obj_calloc( p_this, 1, sizeof( demux_sys_t ) );
 180     if( !p_sys )
 181         return VLC_ENOMEM;
 182
 183     memset( &fmt, 0, sizeof( es_format_t ) );
 184
 185     /* DEFAULTS */
 186     p_sys->video_mode      = DC1394_VIDEO_MODE_640x480_YUV422;
 187     p_sys->width           = 640;
 188     p_sys->height          = 480;
 189     p_sys->frame_rate      = DC1394_FRAMERATE_15;
 190     p_sys->brightness      = 200;
 191     p_sys->focus           = 0;
 192     p_sys->p_dccontext     = NULL;
 193     p_sys->camera          = NULL;
 194     p_sys->selected_camera = -1;
 195     p_sys->dma_buffers     = 1;
 196     p_sys->reset_bus       = 0;
 197
 198     /* PROCESS INPUT OPTIONS */
 199     if( process_options(p_demux) != VLC_SUCCESS )
 200     {
 201         msg_Err( p_demux, "Bad MRL, please check the option line "
 202                           "(MRL was: %s)",
 203                           p_demux->psz_location );
 204         return VLC_EGENERIC;
 205     }
 206
 207     p_sys->p_dccontext = dc1394_new();
 208     if( !p_sys->p_dccontext )
 209     {
 210         msg_Err( p_demux, "Failed to initialise libdc1394");
 211         return VLC_EGENERIC;
 212     }
 213
 214     if( FindCamera( p_sys, p_demux ) != VLC_SUCCESS )
 215     {
 216         dc1394_free( p_sys->p_dccontext );
 217         return VLC_EGENERIC;
 218     }
 219
 220     if( !p_sys->camera )
 221     {
 222         msg_Err( p_demux, "No camera found !!" );
 223         dc1394_free( p_sys->p_dccontext );
 224         return VLC_EGENERIC;
 225     }
 226
 227     if( p_sys->reset_bus )
 228     {
 229         if( dc1394_reset_bus( p_sys->camera ) != DC1394_SUCCESS )
 230         {
 231             msg_Err( p_demux, "Unable to reset IEEE 1394 bus");
 232             Close( p_this );
 233             return VLC_EGENERIC;
 234         }
 235         else msg_Dbg( p_demux, "Successfully reset IEEE 1394 bus");
 236     }
 237
 238     if( dc1394_camera_reset( p_sys->camera ) != DC1394_SUCCESS )
 239     {
 240         msg_Err( p_demux, "Unable to reset camera");
 241         Close( p_this );
 242         return VLC_EGENERIC;
 243     }
 244
 245     if( dc1394_camera_print_info( p_sys->camera,
 246                   stderr ) != DC1394_SUCCESS )
 247     {
 248         msg_Err( p_demux, "Unable to print camera info");
 249         Close( p_this );
 250         return VLC_EGENERIC;
 251     }
 252
 253     if( dc1394_feature_get_all( p_sys->camera,
 254                 &p_sys->features ) != DC1394_SUCCESS )
 255     {
 256         msg_Err( p_demux, "Unable to get feature set");
 257         Close( p_this );
 258         return VLC_EGENERIC;
 259     }
 260     // TODO: only print features if verbosity increased
 261     dc1394_feature_print_all(&p_sys->features, stderr);
 262
 263 #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/
 264     if( p_sys->video_device )
 265     {
 266         if( dc1394_capture_set_device_filename( p_sys->camera,
 267                         p_sys->video_device ) != DC1394_SUCCESS )
 268         {
 269             msg_Err( p_demux, "Unable to set video device");
 270             Close( p_this );
 271             return VLC_EGENERIC;
 272         }
 273     }
 274 #endif
 275
 276     if( p_sys->focus )
 277     {
 278         if( dc1394_feature_set_value( p_sys->camera,
 279                       DC1394_FEATURE_FOCUS,
 280                       p_sys->focus ) != DC1394_SUCCESS )
 281         {
 282             msg_Err( p_demux, "Unable to set initial focus to %u",
 283                      p_sys->focus );
 284         }
 285         else
 286             msg_Dbg( p_demux, "Initial focus set to %u", p_sys->focus );
 287     }
 288
 289     if( dc1394_feature_set_value( p_sys->camera,
 290                   DC1394_FEATURE_FOCUS,
 291                   p_sys->brightness ) != DC1394_SUCCESS )
 292     {
 293         msg_Err( p_demux, "Unable to set initial brightness to %u",
 294                  p_sys->brightness );
 295     }
 296     else
 297         msg_Dbg( p_demux, "Initial brightness set to %u", p_sys->brightness );
 298
 299     if( dc1394_video_set_framerate( p_sys->camera,
 300                     p_sys->frame_rate ) != DC1394_SUCCESS )
 301     {
 302         msg_Err( p_demux, "Unable to set framerate");
 303         Close( p_this );
 304         return VLC_EGENERIC;
 305     }
 306
 307     if( dc1394_video_set_mode( p_sys->camera,
 308                    p_sys->video_mode ) != DC1394_SUCCESS )
 309     {
 310         msg_Err( p_demux, "Unable to set video mode");
 311         Close( p_this );
 312         return VLC_EGENERIC;
 313     }
 314
 315     if( dc1394_video_set_iso_speed( p_sys->camera,
 316                     DC1394_ISO_SPEED_400 ) != DC1394_SUCCESS )
 317     {
 318         msg_Err( p_demux, "Unable to set iso speed");
 319         Close( p_this );
 320         return VLC_EGENERIC;
 321     }
 322
 323     /* and setup capture */
 324     res = dc1394_capture_setup( p_sys->camera,
 325                     p_sys->dma_buffers,
 326                 DC1394_CAPTURE_FLAGS_DEFAULT);
 327     if( res != DC1394_SUCCESS )
 328     {
 329         if( res == DC1394_NO_BANDWIDTH )
 330         {
 331             msg_Err( p_demux ,"No bandwidth: try adding the "
 332              "\"resetbus\" option" );
 333         }
 334         else
 335         {
 336             msg_Err( p_demux ,"Unable to setup capture" );
 337         }
 338         Close( p_this );
 339         return VLC_EGENERIC;
 340     }
 341
 342     /* TODO - UYV444 chroma converter is missing, when it will be available
 343      * fourcc will become variable (and not just a fixed value for UYVY)
 344      */
 345     es_format_Init( &fmt, VIDEO_ES, VLC_CODEC_UYVY );
 346
 347     fmt.video.i_width = p_sys->width;
 348     fmt.video.i_height = p_sys->height;
 349
 350     msg_Dbg( p_demux, "Added new video es %4.4s %dx%d",
 351              (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 352
 353     p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
 354
 355     /* have the camera start sending us data */
 356     if( dc1394_video_set_transmission( p_sys->camera,
 357                        DC1394_ON ) != DC1394_SUCCESS )
 358     {
 359         msg_Err( p_demux, "Unable to start camera iso transmission" );
 360         dc1394_capture_stop( p_sys->camera );
 361         Close( p_this );
 362         return VLC_EGENERIC;
 363     }
 364     msg_Dbg( p_demux, "Set iso transmission" );
 365     // TODO: reread camera
 366     return VLC_SUCCESS;
 367 }
 368
 369 /*****************************************************************************
 370  * Close:
 371  *****************************************************************************/
 372 static void Close( vlc_object_t *p_this )
 373 {
 374     demux_t     *p_demux = (demux_t*)p_this;
 375     demux_sys_t *p_sys = p_demux->p_sys;
 376
 377     /* Stop data transmission */
 378     if( dc1394_video_set_transmission( p_sys->camera,
 379                        DC1394_OFF ) != DC1394_SUCCESS )
 380         msg_Err( p_demux, "Unable to stop camera iso transmission" );
 381
 382     /* Close camera */
 383     dc1394_capture_stop( p_sys->camera );
 384
 385     dc1394_camera_free(p_sys->camera);
 386     dc1394_free(p_sys->p_dccontext);
 387
 388     free( p_sys->video_device );
 389 }
 390
 391 #if 0
 392 static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
 393 {
 394     char u,v,y;
 395     u_char  *sc;
 396     u_char  *dc;
 397
 398     sc = (u_char *)src + (spos*2);
 399     if( spos % 2 )
 400     {
 401         v = sc[0];
 402         y = sc[1];
 403         u = *(sc -2);
 404     }
 405     else
 406     {
 407         u = sc[0];
 408         y = sc[1];
 409         v = sc[2];
 410     }
 411     dc = (u_char *)dst+(dpos*2);
 412     if( dpos % 2 )
 413     {
 414         dc[0] = v;
 415         dc[1] = y;
 416     }
 417     else
 418     {
 419         dc[0] = u;
 420         dc[1] = y;
 421     }
 422 }
 423 #endif
 424
 425 /*****************************************************************************
 426  * Demux:
 427  *****************************************************************************/
 428 static block_t *GrabVideo( demux_t *p_demux )
 429 {
 430     demux_sys_t *p_sys = p_demux->p_sys;
 431     block_t     *p_block = NULL;
 432
 433     if( dc1394_capture_dequeue( p_sys->camera,
 434                 DC1394_CAPTURE_POLICY_WAIT,
 435                 &p_sys->frame ) != DC1394_SUCCESS )
 436     {
 437         msg_Err( p_demux, "Unable to capture a frame" );
 438         return NULL;
 439     }
 440
 441     p_block = block_Alloc( p_sys->frame->size[0] * p_sys->frame->size[1] * 2 );
 442     if( !p_block )
 443     {
 444         msg_Err( p_demux, "Can not get block" );
 445         return NULL;
 446     }
 447
 448     if( !p_sys->frame->image )
 449     {
 450         msg_Err (p_demux, "Capture buffer empty");
 451         block_Release( p_block );
 452         return NULL;
 453     }
 454
 455     memcpy( p_block->p_buffer, (const char *)p_sys->frame->image,
 456             p_sys->width * p_sys->height * 2 );
 457
 458     p_block->i_pts = p_block->i_dts = mdate();
 459     dc1394_capture_enqueue( p_sys->camera, p_sys->frame );
 460     return p_block;
 461 }
 462
 463 static int Demux( demux_t *p_demux )
 464 {
 465     demux_sys_t *p_sys = p_demux->p_sys;
 466     block_t *p_blockv = NULL;
 467
 468     /* Try grabbing video frame */
 469     p_blockv = GrabVideo( p_demux );
 470
 471     if( !p_blockv )
 472     {
 473         /* Sleep so we do not consume all the cpu, 10ms seems
 474          * like a good value (100fps)
 475          */
 476         msleep( 10000 );
 477         return 1;
 478     }
 479
 480     if( p_blockv )
 481     {
 482         es_out_SetPCR( p_demux->out, p_blockv->i_pts );
 483         es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
 484     }
 485     return 1;
 486 }
 487
 488 /*****************************************************************************
 489  * Control:
 490  *****************************************************************************/
 491 static int Control( demux_t *p_demux, int i_query, va_list args )
 492 {
 493     VLC_UNUSED( p_demux );
 494     switch( i_query )
 495     {
 496         /* Special for access_demux */
 497         case DEMUX_CAN_PAUSE:
 498         case DEMUX_CAN_SEEK:
 499         case DEMUX_CAN_CONTROL_PACE:
 500             *va_arg( args, bool * ) = false;
 501             return VLC_SUCCESS;
 502
 503         case DEMUX_GET_PTS_DELAY:
 504             *va_arg( args, int64_t * ) = (int64_t)DEFAULT_PTS_DELAY;
 505             return VLC_SUCCESS;
 506
 507         case DEMUX_GET_TIME:
 508             *va_arg( args, int64_t * ) = mdate();
 509             return VLC_SUCCESS;
 510
 511         /* TODO implement others */
 512         default:
 513             return VLC_EGENERIC;
 514     }
 515     return VLC_EGENERIC;
 516 }
 517
 518 static int process_options( demux_t *p_demux )
 519 {
 520     demux_sys_t *p_sys = p_demux->p_sys;
 521     char *psz_dup;
 522     char *psz_parser;
 523     char *token = NULL;
 524     char *state = NULL;
 525     const char *in_size = NULL;
 526     const char *in_fmt = NULL;
 527     float rate_f;
 528
 529     psz_dup = strdup( p_demux->psz_location );
 530     psz_parser = psz_dup;
 531     for( token = strtok_r( psz_parser,":",&state); token;
 532          token = strtok_r( NULL, ":", &state ) )
 533     {
 534         if( strncmp( token, "size=", strlen("size=") ) == 0 )
 535         {
 536             token += strlen("size=");
 537             if( strncmp( token, "160x120", 7 ) == 0 )
 538             {
 539                 /* TODO - UYV444 chroma converter is needed ...
 540                     * video size of 160x120 is temporarily disabled
 541                     */
 542                 msg_Err( p_demux,
 543                     "video size of 160x120 is actually disabled for lack of"
 544                     "chroma support. It will be released ASAP, until then try "
 545                     "an higher size (320x240 and 640x480 are fully supported)" );
 546                 free(psz_dup);
 547                 return VLC_EGENERIC;
 548 #if 0
 549                 in_size = "160x120";
 550                 p_sys->width = 160;
 551                 p_sys->height = 120;
 552 #endif
 553             }
 554             else if( strncmp( token, "320x240", 7 ) == 0 )
 555             {
 556                 in_size = "320x240";
 557                 p_sys->width = 320;
 558                 p_sys->height = 240;
 559             }
 560             else if( strncmp( token, "640x480", 7 ) == 0 )
 561             {
 562                 in_size = "640x480";
 563                 p_sys->width = 640;
 564                 p_sys->height = 480;
 565             }
 566             else
 567             {
 568                 msg_Err( p_demux,
 569                     "This program currently suppots frame sizes of"
 570                     " 160x120, 320x240, and 640x480. "
 571                     "Please specify one of them. You have specified %s.",
 572                     token );
 573                 free(psz_dup);
 574                 return VLC_EGENERIC;
 575             }
 576             msg_Dbg( p_demux, "Requested video size : %s",token );
 577         }
 578         if( strncmp( token, "format=", strlen("format=") ) == 0 )
 579         {
 580             token += strlen("format=");
 581             if( strncmp( token, "YUV411", 6 ) == 0 )
 582             {
 583                 in_fmt = "YUV411";
 584             }
 585             else if( strncmp( token, "YUV422", 6 ) == 0 )
 586             {
 587                 in_fmt = "YUV422";
 588             }
 589             else if( strncmp( token, "YUV444", 6 ) == 0 )
 590             {
 591                 in_fmt = "YUV444";
 592             }
 593             else if( strncmp( token, "RGB8", 4 ) == 0 )
 594             {
 595                 in_fmt = "RGB8";
 596             }
 597             else if( strncmp( token, "MONO8", 5 ) == 0 )
 598             {
 599                 in_fmt = "MONO8";
 600             }
 601             else if( strncmp( token, "MONO16", 6 ) == 0 )
 602             {
 603                 in_fmt = "MONO16";
 604             }
 605             else
 606             {
 607                 msg_Err( p_demux, "Invalid format %s.", token );
 608                 free(psz_dup);
 609                 return VLC_EGENERIC;
 610             }
 611             msg_Dbg( p_demux, "Requested video format : %s", token );
 612         }
 613         else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
 614         {
 615             token += strlen("fps=");
 616             sscanf( token, "%g", &rate_f );
 617             if( rate_f == 1.875 )
 618                 p_sys->frame_rate = DC1394_FRAMERATE_1_875;
 619             else if( rate_f == 3.75 )
 620                 p_sys->frame_rate = DC1394_FRAMERATE_3_75;
 621             else if( rate_f == 7.5 )
 622                 p_sys->frame_rate = DC1394_FRAMERATE_7_5;
 623             else if( rate_f == 15 )
 624                 p_sys->frame_rate = DC1394_FRAMERATE_15;
 625             else if( rate_f == 30 )
 626                 p_sys->frame_rate = DC1394_FRAMERATE_30;
 627             else if( rate_f == 60 )
 628                 p_sys->frame_rate = DC1394_FRAMERATE_60;
 629             else
 630             {
 631                 msg_Err( p_demux ,
 632                     "This program supports framerates of"
 633                     " 1.875, 3.75, 7.5, 15, 30, 60. "
 634                     "Please specify one of them. You have specified %s.",
 635                     token);
 636                 free(psz_dup);
 637                 return VLC_EGENERIC;
 638             }
 639             msg_Dbg( p_demux, "Requested frame rate : %s",token );
 640         }
 641         else if( strncmp( token, "resetbus", strlen( "resetbus" ) ) == 0 )
 642         {
 643             token += strlen("resetbus");
 644             p_sys->reset_bus = 1;
 645         }
 646         else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
 647         {
 648             int nr = 0;
 649             token += strlen("brightness=");
 650             nr = sscanf( token, "%u", &p_sys->brightness);
 651             if( nr != 1 )
 652             {
 653                 msg_Err( p_demux, "Bad brightness value '%s', "
 654                                   "must be an unsigned integer.",
 655                                   token );
 656                 free(psz_dup);
 657                 return VLC_EGENERIC;
 658             }
 659         }
 660         else if( strncmp( token, "buffers=", strlen( "buffers=" ) ) == 0 )
 661         {
 662             int nr = 0;
 663             int in_buf = 0;
 664             token += strlen("buffers=");
 665             nr = sscanf( token, "%d", &in_buf);
 666             if( nr != 1 || in_buf < 1 )
 667             {
 668                 msg_Err( p_demux, "DMA buffers must be 1 or greater." );
 669                 free(psz_dup);
 670                 return VLC_EGENERIC;
 671             }
 672             else p_sys->dma_buffers = in_buf;
 673         }
 674 #if 0
 675         // NOTE: If controller support is added back, more logic will needed to be added
 676         //       after the cameras are scanned.
 677         else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
 678         {
 679             int nr = 0;
 680             token += strlen("controller=");
 681             nr = sscanf( token, "%u", &p_sys->controller );
 682             if( nr != 1)
 683             {
 684                 msg_Err(p_demux, "Bad controller value '%s', "
 685                                  "must be an unsigned integer.",
 686                                  token );
 687                 return VLC_EGENERIC;
 688             }
 689         }
 690 #endif
 691         else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
 692         {
 693             int nr = 0;
 694             token += strlen("camera=");
 695             nr = sscanf(token,"%u",&p_sys->selected_camera);
 696             if( nr != 1)
 697             {
 698                 msg_Err( p_demux, "Bad camera number '%s', "
 699                                   "must be an unsigned integer.",
 700                                   token );
 701                 free(psz_dup);
 702                 return VLC_EGENERIC;
 703             }
 704         }
 705         else if( strncmp( token, "vdev=", strlen( "vdev=" ) ) == 0)
 706         {
 707             token += strlen("vdev=");
 708             p_sys->video_device = strdup(token);
 709             msg_Dbg( p_demux, "Using video device '%s'.", token );
 710         }
 711         else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
 712         {
 713             int nr = 0;
 714             token += strlen("focus=");
 715             nr = sscanf( token, "%u", &p_sys->focus );
 716             if( nr != 1 )
 717             {
 718                 msg_Err( p_demux, "Bad focus value '%s', "
 719                                   "must be an unsigned integer.",
 720                                   token );
 721                 free(psz_dup);
 722                 return VLC_EGENERIC;
 723             }
 724         }
 725         else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
 726         {
 727             token += strlen("uid=");
 728             sscanf( token, "0x%"SCNx64, &p_sys->selected_uid );
 729         }
 730     }
 731
 732     // The mode is a combination of size and format and not every format
 733     // is supported by every size.
 734     if( in_size)
 735     {
 736         if( strcmp( in_size, "160x120") == 0)
 737         {
 738             if( in_fmt && (strcmp( in_fmt, "YUV444") != 0) )
 739                 msg_Err(p_demux, "160x120 only supports YUV444 - forcing");
 740             p_sys->video_mode = DC1394_VIDEO_MODE_160x120_YUV444;
 741         }
 742         else if( strcmp( in_size, "320x240") == 0)
 743         {
 744             if( in_fmt && (strcmp( in_fmt, "YUV422") != 0) )
 745                 msg_Err(p_demux, "320x240 only supports YUV422 - forcing");
 746             p_sys->video_mode = DC1394_VIDEO_MODE_320x240_YUV422;
 747         }
 748     }
 749     else
 750     { // 640x480 default
 751         if( in_fmt )
 752         {
 753             if( strcmp( in_fmt, "RGB8") == 0)
 754                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_RGB8;
 755             else if( strcmp( in_fmt, "MONO8") == 0)
 756                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO8;
 757             else if( strcmp( in_fmt, "MONO16") == 0)
 758                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO16;
 759             else if( strcmp( in_fmt, "YUV411") == 0)
 760                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV411;
 761             else // YUV422 default
 762                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 763         }
 764         else // YUV422 default
 765             p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 766     }
 767
 768     free( psz_dup );
 769     return VLC_SUCCESS;
 770 }