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