git.sesse.net Git - vlc/blob - modules/access/dc1394.c

   1 /*****************************************************************************
   2  * dc1394.c: 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  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation;
  14  * version 2 of the License.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  24  *
  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_input.h>
  38 #include <vlc_demux.h>
  39 #include <vlc_charset.h>
  40 #include <vlc_picture.h>
  41
  42 #ifdef HAVE_FCNTL_H
  43 #   include <fcntl.h>
  44 #endif
  45 #ifdef HAVE_UNISTD_H
  46 #   include <unistd.h>
  47 #elif defined( WIN32 ) && !defined( UNDER_CE )
  48 #   include <io.h>
  49 #endif
  50
  51 #include <sys/ioctl.h>
  52 #include <sys/soundcard.h>
  53
  54 #include <libraw1394/raw1394.h>
  55 #include <dc1394/dc1394.h>
  56
  57 #define MAX_IEEE1394_HOSTS 32
  58 #define MAX_CAMERA_NODES 32
  59
  60 /*****************************************************************************
  61  * Module descriptor
  62  *****************************************************************************/
  63 static int  Open ( vlc_object_t * );
  64 static void Close( vlc_object_t * );
  65 static void OpenAudioDev( demux_t *p_demux );
  66 static inline void CloseAudioDev( demux_t *p_demux );
  67
  68 vlc_module_begin()
  69     set_description( N_("dc1394 input") )
  70     set_capability( "access_demux", 10 )
  71     add_shortcut( "dc1394" )
  72     set_callbacks( Open, Close )
  73 vlc_module_end()
  74
  75 struct demux_sys_t
  76 {
  77     /* camera info */
  78     dc1394_t            *p_dccontext;
  79     uint32_t            num_cameras;
  80     dc1394camera_t      *camera;
  81     int                 selected_camera;
  82     uint64_t            selected_uid;
  83     picture_t           pic;
  84     uint32_t            dma_buffers;
  85     dc1394featureset_t  features;
  86     quadlet_t           supported_framerates;
  87     bool                reset_bus;
  88
  89     /* video info */
  90     char                *video_device;
  91     dc1394video_mode_t  video_mode;
  92     int                 width;
  93     int                 height;
  94     int                 frame_size;
  95     int                 frame_rate;
  96     unsigned int        brightness;
  97     unsigned int        focus;
  98     es_out_id_t         *p_es_video;
  99     dc1394video_frame_t *frame;
 100
 101     /* audio stuff */
 102     int                 i_sample_rate;
 103     int                 channels;
 104     int                 i_audio_max_frame_size;
 105     int                 fd_audio;
 106     char                *audio_device;
 107     es_out_id_t         *p_es_audio;
 108 };
 109
 110 /*****************************************************************************
 111  * Local prototypes
 112  *****************************************************************************/
 113 static int Demux( demux_t *p_demux );
 114 static int Control( demux_t *, int, va_list );
 115 static block_t *GrabVideo( demux_t *p_demux );
 116 static block_t *GrabAudio( demux_t *p_demux );
 117 static int process_options( demux_t *p_demux);
 118
 119 /*****************************************************************************
 120  * FindCameras
 121  *****************************************************************************/
 122 static int FindCamera( demux_sys_t *sys, demux_t *p_demux )
 123 {
 124     dc1394camera_list_t *list;
 125
 126     msg_Dbg( p_demux, "Scanning for ieee1394 ports ..." );
 127
 128     if( dc1394_camera_enumerate (sys->p_dccontext, &list) != DC1394_SUCCESS )
 129     {
 130         msg_Err(p_demux, "Can not ennumerate cameras");
 131         dc1394_camera_free_list (list);
 132         return VLC_EGENERIC;
 133     }
 134
 135     if( list->num == 0 )
 136     {
 137         msg_Err(p_demux, "Can not find cameras");
 138         dc1394_camera_free_list (list);
 139         return VLC_EGENERIC;
 140     }
 141
 142     sys->num_cameras = list->num;
 143     msg_Dbg( p_demux, "Found %d dc1394 cameras.", list->num);
 144
 145     if( sys->selected_uid )
 146     {
 147         int found = 0;
 148         for( unsigned i = 0; i < sys->num_cameras; i++ )
 149         {
 150             if( list->ids[i].guid == sys->selected_uid )
 151             {
 152                 sys->camera = dc1394_camera_new(sys->p_dccontext,
 153                                                 list->ids[i].guid);
 154                 found++;
 155                 break;
 156             }
 157         }
 158         if( !found )
 159         {
 160             msg_Err( p_demux, "Can't find camera with uid : 0x%llx.",
 161                      sys->selected_uid );
 162             dc1394_camera_free_list (list);
 163             return VLC_EGENERIC;
 164         }
 165     }
 166     else if( sys->selected_camera >= (int)list->num )
 167     {
 168         msg_Err( p_demux, "There are not this many cameras. (%d/%d)",
 169                  sys->selected_camera, sys->num_cameras );
 170         dc1394_camera_free_list (list);
 171         return VLC_EGENERIC;
 172     }
 173     else if( sys->selected_camera >= 0 )
 174     {
 175         sys->camera = dc1394_camera_new(sys->p_dccontext,
 176                     list->ids[sys->selected_camera].guid);
 177     }
 178     else
 179     {
 180         sys->camera = dc1394_camera_new(sys->p_dccontext,
 181                                           list->ids[0].guid);
 182     }
 183
 184     dc1394_camera_free_list (list);
 185     return VLC_SUCCESS;
 186 }
 187
 188 /*****************************************************************************
 189  * Open:
 190  *****************************************************************************/
 191 static int Open( vlc_object_t *p_this )
 192 {
 193     demux_t      *p_demux = (demux_t*)p_this;
 194     demux_sys_t  *p_sys;
 195     es_format_t   fmt;
 196     dc1394error_t res;
 197     int           i_width;
 198     int           i_height;
 199
 200     if( strncmp(p_demux->psz_access, "dc1394", 6) != 0 )
 201         return VLC_EGENERIC;
 202
 203     /* Set up p_demux */
 204     p_demux->pf_demux = Demux;
 205     p_demux->pf_control = Control;
 206     p_demux->info.i_update = 0;
 207     p_demux->info.i_title = 0;
 208     p_demux->info.i_seekpoint = 0;
 209
 210     p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
 211     if( !p_sys )
 212         return VLC_ENOMEM;
 213
 214     memset( &fmt, 0, sizeof( es_format_t ) );
 215
 216     /* DEFAULTS */
 217     p_sys->video_mode      = DC1394_VIDEO_MODE_640x480_YUV422;
 218     p_sys->width           = 640;
 219     p_sys->height          = 480;
 220     p_sys->frame_rate      = DC1394_FRAMERATE_15;
 221     p_sys->brightness      = 200;
 222     p_sys->focus           = 0;
 223     p_sys->fd_audio        = -1;
 224     p_sys->p_dccontext     = NULL;
 225     p_sys->camera          = NULL;
 226     p_sys->selected_camera = -1;
 227     p_sys->dma_buffers     = 1;
 228     p_sys->reset_bus       = 0;
 229
 230     /* PROCESS INPUT OPTIONS */
 231     if( process_options(p_demux) != VLC_SUCCESS )
 232     {
 233         msg_Err( p_demux, "Bad MRL, please check the option line "
 234                           "(MRL was: %s)",
 235                           p_demux->psz_path );
 236         free( p_sys );
 237         return VLC_EGENERIC;
 238     }
 239
 240     p_sys->p_dccontext = dc1394_new();
 241     if( !p_sys->p_dccontext )
 242     {
 243         msg_Err( p_demux, "Failed to initialise libdc1394");
 244         free( p_sys );
 245         return VLC_EGENERIC;
 246     }
 247
 248     if( FindCamera( p_sys, p_demux ) != VLC_SUCCESS )
 249     {
 250         dc1394_free( p_sys->p_dccontext );
 251         free( p_sys );
 252         return VLC_EGENERIC;
 253     }
 254
 255     if( !p_sys->camera )
 256     {
 257         msg_Err( p_demux, "No camera found !!" );
 258         dc1394_free( p_sys->p_dccontext );
 259         free( p_sys );
 260         return VLC_EGENERIC;
 261     }
 262
 263     if( p_sys->reset_bus )
 264     {
 265         if( dc1394_reset_bus( p_sys->camera ) != DC1394_SUCCESS )
 266         {
 267             msg_Err( p_demux, "Unable to reset IEEE 1394 bus");
 268             Close( p_this );
 269             return VLC_EGENERIC;
 270         }
 271         else msg_Dbg( p_demux, "Successfully reset IEEE 1394 bus");
 272     }
 273
 274     if( dc1394_camera_reset( p_sys->camera ) != DC1394_SUCCESS )
 275     {
 276         msg_Err( p_demux, "Unable to reset camera");
 277         Close( p_this );
 278         return VLC_EGENERIC;
 279     }
 280
 281     if( dc1394_camera_print_info( p_sys->camera,
 282                   stderr ) != DC1394_SUCCESS )
 283     {
 284         msg_Err( p_demux, "Unable to print camera info");
 285         Close( p_this );
 286         return VLC_EGENERIC;
 287     }
 288
 289     if( dc1394_feature_get_all( p_sys->camera,
 290                 &p_sys->features ) != DC1394_SUCCESS )
 291     {
 292         msg_Err( p_demux, "Unable to get feature set");
 293         Close( p_this );
 294         return VLC_EGENERIC;
 295     }
 296     // TODO: only print features if verbosity increased
 297     dc1394_feature_print_all(&p_sys->features, stderr);
 298
 299 #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/
 300     if( p_sys->video_device )
 301     {
 302         if( dc1394_capture_set_device_filename( p_sys->camera,
 303                         p_sys->video_device ) != DC1394_SUCCESS )
 304         {
 305             msg_Err( p_demux, "Unable to set video device");
 306             Close( p_this );
 307             return VLC_EGENERIC;
 308         }
 309     }
 310 #endif
 311
 312     if( p_sys->focus )
 313     {
 314         if( dc1394_feature_set_value( p_sys->camera,
 315                       DC1394_FEATURE_FOCUS,
 316                       p_sys->focus ) != DC1394_SUCCESS )
 317         {
 318             msg_Err( p_demux, "Unable to set initial focus to %u",
 319                      p_sys->focus );
 320         }
 321         msg_Dbg( p_demux, "Initial focus set to %u", p_sys->focus );
 322     }
 323
 324     if( dc1394_feature_set_value( p_sys->camera,
 325                   DC1394_FEATURE_FOCUS,
 326                   p_sys->brightness ) != DC1394_SUCCESS )
 327     {
 328         msg_Err( p_demux, "Unable to set initial brightness to %u",
 329                  p_sys->brightness );
 330     }
 331     msg_Dbg( p_demux, "Initial brightness set to %u", p_sys->brightness );
 332
 333     if( dc1394_video_set_framerate( p_sys->camera,
 334                     p_sys->frame_rate ) != DC1394_SUCCESS )
 335     {
 336         msg_Err( p_demux, "Unable to set framerate");
 337         Close( p_this );
 338         return VLC_EGENERIC;
 339     }
 340
 341     if( dc1394_video_set_mode( p_sys->camera,
 342                    p_sys->video_mode ) != DC1394_SUCCESS )
 343     {
 344         msg_Err( p_demux, "Unable to set video mode");
 345         Close( p_this );
 346         return VLC_EGENERIC;
 347     }
 348
 349     if( dc1394_video_set_iso_speed( p_sys->camera,
 350                     DC1394_ISO_SPEED_400 ) != DC1394_SUCCESS )
 351     {
 352         msg_Err( p_demux, "Unable to set iso speed");
 353         Close( p_this );
 354         return VLC_EGENERIC;
 355     }
 356
 357     /* and setup capture */
 358     res = dc1394_capture_setup( p_sys->camera,
 359                     p_sys->dma_buffers,
 360                 DC1394_CAPTURE_FLAGS_DEFAULT);
 361     if( res != DC1394_SUCCESS )
 362     {
 363         if( res == DC1394_NO_BANDWIDTH )
 364         {
 365             msg_Err( p_demux ,"No bandwidth: try adding the "
 366              "\"resetbus\" option" );
 367         }
 368         else
 369         {
 370             msg_Err( p_demux ,"Unable to setup capture" );
 371         }
 372         Close( p_this );
 373         return VLC_EGENERIC;
 374     }
 375
 376     /* TODO - UYV444 chroma converter is missing, when it will be available
 377      * fourcc will become variable (and not just a fixed value for UYVY)
 378      */
 379     i_width = p_sys->width;
 380     i_height = p_sys->height;
 381
 382     if( picture_Setup( &p_sys->pic, VLC_CODEC_UYVY,
 383                        i_width, i_height,
 384                        i_width * VOUT_ASPECT_FACTOR / i_height ) )
 385     {
 386         msg_Err( p_demux ,"unknown chroma" );
 387         Close( p_this );
 388         return VLC_EGENERIC;
 389     }
 390
 391     es_format_Init( &fmt, VIDEO_ES, VLC_CODEC_UYVY );
 392
 393     fmt.video.i_width = i_width;
 394     fmt.video.i_height = i_height;
 395
 396     msg_Dbg( p_demux, "Added new video es %4.4s %dx%d",
 397              (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 398
 399     p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
 400
 401     if( p_sys->audio_device )
 402     {
 403         OpenAudioDev( p_demux );
 404         if( p_sys->fd_audio >= 0 )
 405         {
 406             es_format_t fmt;
 407             es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S16L ); /* FIXME: hmm, ?? */
 408
 409             fmt.audio.i_channels = p_sys->channels ? p_sys->channels : 1;
 410             fmt.audio.i_rate = p_sys->i_sample_rate;
 411             fmt.audio.i_bitspersample = 16;
 412             fmt.audio.i_blockalign = fmt.audio.i_channels *
 413                                      fmt.audio.i_bitspersample / 8;
 414             fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
 415                             fmt.audio.i_bitspersample;
 416
 417             msg_Dbg( p_demux, "New audio es %d channels %dHz",
 418             fmt.audio.i_channels, fmt.audio.i_rate );
 419
 420             p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
 421         }
 422     }
 423
 424     /* have the camera start sending us data */
 425     if( dc1394_video_set_transmission( p_sys->camera,
 426                        DC1394_ON ) != DC1394_SUCCESS )
 427     {
 428         msg_Err( p_demux, "Unable to start camera iso transmission" );
 429         dc1394_capture_stop( p_sys->camera );
 430         Close( p_this );
 431         return VLC_EGENERIC;
 432     }
 433     msg_Dbg( p_demux, "Set iso transmission" );
 434     // TODO: reread camera
 435     return VLC_SUCCESS;
 436 }
 437
 438 static void OpenAudioDev( demux_t *p_demux )
 439 {
 440     demux_sys_t *p_sys = p_demux->p_sys;
 441     char *psz_device = p_sys->audio_device;
 442     int i_format = AFMT_S16_LE;
 443     int result;
 444
 445     p_sys->fd_audio = utf8_open( psz_device, O_RDONLY | O_NONBLOCK );
 446     if( p_sys->fd_audio  < 0 )
 447     {
 448         msg_Err( p_demux, "Cannot open audio device (%s)", psz_device );
 449         CloseAudioDev( p_demux );
 450     }
 451
 452     if( !p_sys->i_sample_rate )
 453         p_sys->i_sample_rate = 44100;
 454
 455     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SETFMT, &i_format );
 456     if( (result  < 0) || (i_format != AFMT_S16_LE) )
 457     {
 458         msg_Err( p_demux, "Cannot set audio format (16b little endian) "
 459                           "(%d)", i_format );
 460         CloseAudioDev( p_demux );
 461     }
 462
 463     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_CHANNELS, &p_sys->channels );
 464     if( result < 0 )
 465     {
 466         msg_Err( p_demux, "Cannot set audio channels count (%d)",
 467                  p_sys->channels );
 468         CloseAudioDev( p_demux );
 469     }
 470
 471     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SPEED, &p_sys->i_sample_rate );
 472     if( result < 0 )
 473     {
 474         msg_Err( p_demux, "Cannot set audio sample rate (%d)",
 475          p_sys->i_sample_rate );
 476         CloseAudioDev( p_demux );
 477     }
 478
 479     msg_Dbg( p_demux, "Opened adev=`%s' %s %dHz",
 480              psz_device,
 481              (p_sys->channels > 1) ? "stereo" : "mono",
 482              p_sys->i_sample_rate );
 483
 484     p_sys->i_audio_max_frame_size = 32 * 1024;
 485 }
 486
 487 static inline void CloseAudioDev( demux_t *p_demux )
 488 {
 489     demux_sys_t *p_sys = p_demux->p_sys;
 490
 491     if( p_sys->fd_audio >= 0 )
 492         close( p_sys->fd_audio );
 493 }
 494
 495 /*****************************************************************************
 496  * Close:
 497  *****************************************************************************/
 498 static void Close( vlc_object_t *p_this )
 499 {
 500     demux_t     *p_demux = (demux_t*)p_this;
 501     demux_sys_t *p_sys = p_demux->p_sys;
 502
 503     /* Stop data transmission */
 504     if( dc1394_video_set_transmission( p_sys->camera,
 505                        DC1394_OFF ) != DC1394_SUCCESS )
 506         msg_Err( p_demux, "Unable to stop camera iso transmission" );
 507
 508     /* Close camera */
 509     dc1394_capture_stop( p_sys->camera );
 510
 511     CloseAudioDev( p_demux );
 512
 513     dc1394_camera_free(p_sys->camera);
 514     dc1394_free(p_sys->p_dccontext);
 515
 516     free( p_sys->audio_device );
 517     free( p_sys );
 518 }
 519
 520 #if 0
 521 static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
 522 {
 523     char u,v,y;
 524     u_char  *sc;
 525     u_char  *dc;
 526
 527     sc = (u_char *)src + (spos*2);
 528     if( spos % 2 )
 529     {
 530         v = sc[0];
 531         y = sc[1];
 532         u = *(sc -2);
 533     }
 534     else
 535     {
 536         u = sc[0];
 537         y = sc[1];
 538         v = sc[2];
 539     }
 540     dc = (u_char *)dst+(dpos*2);
 541     if( dpos % 2 )
 542     {
 543         dc[0] = v;
 544         dc[1] = y;
 545     }
 546     else
 547     {
 548         dc[0] = u;
 549         dc[1] = y;
 550     }
 551 }
 552 #endif
 553
 554 /*****************************************************************************
 555  * Demux:
 556  *****************************************************************************/
 557 static block_t *GrabVideo( demux_t *p_demux )
 558 {
 559     demux_sys_t *p_sys = p_demux->p_sys;
 560     block_t     *p_block = NULL;
 561
 562     if( dc1394_capture_dequeue( p_sys->camera,
 563                 DC1394_CAPTURE_POLICY_WAIT,
 564                 &p_sys->frame ) != DC1394_SUCCESS )
 565     {
 566         msg_Err( p_demux, "Unable to capture a frame" );
 567         return NULL;
 568     }
 569
 570     p_block = block_New( p_demux, p_sys->frame->size[0] *
 571                                   p_sys->frame->size[1] * 2 );
 572     if( !p_block )
 573     {
 574         msg_Err( p_demux, "Can not get block" );
 575         return NULL;
 576     }
 577
 578     if( !p_sys->frame->image )
 579     {
 580         msg_Err (p_demux, "Capture buffer empty");
 581         block_Release( p_block );
 582         return NULL;
 583     }
 584
 585     memcpy( p_block->p_buffer, (const char *)p_sys->frame->image,
 586             p_sys->width * p_sys->height * 2 );
 587
 588     p_block->i_pts = p_block->i_dts = mdate();
 589     dc1394_capture_enqueue( p_sys->camera, p_sys->frame );
 590     return p_block;
 591 }
 592
 593 static block_t *GrabAudio( demux_t *p_demux )
 594 {
 595     demux_sys_t *p_sys = p_demux->p_sys;
 596     struct audio_buf_info buf_info;
 597     block_t *p_block = NULL;
 598     int i_read = 0;
 599     int i_correct = 0;
 600     int result = 0;
 601
 602     p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
 603     if( !p_block )
 604     {
 605         msg_Warn( p_demux, "Cannot get buffer" );
 606         return NULL;
 607     }
 608
 609     i_read = read( p_sys->fd_audio, p_block->p_buffer,
 610                    p_sys->i_audio_max_frame_size );
 611
 612     if( i_read <= 0 )
 613         return NULL;
 614
 615     p_block->i_buffer = i_read;
 616
 617     /* Correct the date because of kernel buffering */
 618     i_correct = i_read;
 619     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_GETISPACE, &buf_info );
 620     if( result == 0 )
 621         i_correct += buf_info.bytes;
 622
 623     p_block->i_pts = p_block->i_dts =
 624                         mdate() - INT64_C(1000000) * (mtime_t)i_correct /
 625                         2 / p_sys->channels / p_sys->i_sample_rate;
 626     return p_block;
 627 }
 628
 629 static int Demux( demux_t *p_demux )
 630 {
 631     demux_sys_t *p_sys = p_demux->p_sys;
 632     block_t *p_blocka = NULL;
 633     block_t *p_blockv = NULL;
 634
 635     /* Try grabbing audio frames first */
 636     if( p_sys->fd_audio > 0 )
 637         p_blocka = GrabAudio( p_demux );
 638
 639     /* Try grabbing video frame */
 640     p_blockv = GrabVideo( p_demux );
 641
 642     if( !p_blocka && !p_blockv )
 643     {
 644         /* Sleep so we do not consume all the cpu, 10ms seems
 645          * like a good value (100fps)
 646          */
 647         msleep( 10000 );
 648         return 1;
 649     }
 650
 651     if( p_blocka )
 652     {
 653         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blocka->i_pts );
 654         es_out_Send( p_demux->out, p_sys->p_es_audio, p_blocka );
 655     }
 656
 657     if( p_blockv )
 658     {
 659         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blockv->i_pts );
 660         es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
 661     }
 662     return 1;
 663 }
 664
 665 /*****************************************************************************
 666  * Control:
 667  *****************************************************************************/
 668 static int Control( demux_t *p_demux, int i_query, va_list args )
 669 {
 670     VLC_UNUSED( p_demux );
 671     switch( i_query )
 672     {
 673         /* Special for access_demux */
 674         case DEMUX_CAN_PAUSE:
 675         case DEMUX_CAN_SEEK:
 676         case DEMUX_SET_PAUSE_STATE:
 677         case DEMUX_CAN_CONTROL_PACE:
 678             *va_arg( args, bool * ) = false;
 679             return VLC_SUCCESS;
 680
 681         case DEMUX_GET_PTS_DELAY:
 682             *va_arg( args, int64_t * ) = (int64_t)DEFAULT_PTS_DELAY;
 683             return VLC_SUCCESS;
 684
 685         case DEMUX_GET_TIME:
 686             *va_arg( args, int64_t * ) = mdate();
 687             return VLC_SUCCESS;
 688
 689         /* TODO implement others */
 690         default:
 691             return VLC_EGENERIC;
 692     }
 693     return VLC_EGENERIC;
 694 }
 695
 696 static int process_options( demux_t *p_demux )
 697 {
 698     demux_sys_t *p_sys = p_demux->p_sys;
 699     char *psz_dup;
 700     char *psz_parser;
 701     char *token = NULL;
 702     char *state = NULL;
 703     const char *in_size = NULL;
 704     const char *in_fmt = NULL;
 705     float rate_f;
 706
 707     psz_dup = strdup( p_demux->psz_path );
 708     psz_parser = psz_dup;
 709     for( token = strtok_r( psz_parser,":",&state); token;
 710          token = strtok_r( NULL, ":", &state ) )
 711     {
 712         if( strncmp( token, "size=", strlen("size=") ) == 0 )
 713         {
 714             token += strlen("size=");
 715             if( strncmp( token, "160x120", 7 ) == 0 )
 716             {
 717                 /* TODO - UYV444 chroma converter is needed ...
 718                     * video size of 160x120 is temporarily disabled
 719                     */
 720                 msg_Err( p_demux,
 721                     "video size of 160x120 is actually disabled for lack of"
 722                     "chroma support. It will relased ASAP, until then try "
 723                     "an higher size (320x240 and 640x480 are fully supported)" );
 724                 free(psz_dup);
 725                 return VLC_EGENERIC;
 726 #if 0
 727                 in_size = "160x120";
 728                 p_sys->width = 160;
 729                 p_sys->height = 120;
 730 #endif
 731             }
 732             else if( strncmp( token, "320x240", 7 ) == 0 )
 733             {
 734                 in_size = "320x240";
 735                 p_sys->width = 320;
 736                 p_sys->height = 240;
 737             }
 738             else if( strncmp( token, "640x480", 7 ) == 0 )
 739             {
 740                 in_size = "640x480";
 741                 p_sys->width = 640;
 742                 p_sys->height = 480;
 743             }
 744             else
 745             {
 746                 msg_Err( p_demux,
 747                     "This program currently suppots frame sizes of"
 748                     " 160x120, 320x240, and 640x480. "
 749                     "Please specify one of them. You have specified %s.",
 750                     token );
 751                 free(psz_dup);
 752                 return VLC_EGENERIC;
 753             }
 754             msg_Dbg( p_demux, "Requested video size : %s",token );
 755         }
 756         if( strncmp( token, "format=", strlen("format=") ) == 0 )
 757         {
 758             token += strlen("format=");
 759             if( strncmp( token, "YUV411", 6 ) == 0 )
 760             {
 761                 in_fmt = "YUV411";
 762             }
 763             else if( strncmp( token, "YUV422", 6 ) == 0 )
 764             {
 765                 in_fmt = "YUV422";
 766             }
 767             else if( strncmp( token, "YUV444", 6 ) == 0 )
 768             {
 769                 in_fmt = "YUV444";
 770             }
 771             else if( strncmp( token, "RGB8", 4 ) == 0 )
 772             {
 773                 in_fmt = "RGB8";
 774             }
 775             else if( strncmp( token, "MONO8", 5 ) == 0 )
 776             {
 777                 in_fmt = "MONO8";
 778             }
 779             else if( strncmp( token, "MONO16", 6 ) == 0 )
 780             {
 781                 in_fmt = "MONO16";
 782             }
 783             else
 784             {
 785                 msg_Err( p_demux, "Invalid format %s.", token );
 786                 free(psz_dup);
 787                 return VLC_EGENERIC;
 788             }
 789             msg_Dbg( p_demux, "Requested video format : %s", token );
 790         }
 791         else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
 792         {
 793             token += strlen("fps=");
 794             sscanf( token, "%g", &rate_f );
 795             if( rate_f == 1.875 )
 796                 p_sys->frame_rate = DC1394_FRAMERATE_1_875;
 797             else if( rate_f == 3.75 )
 798                 p_sys->frame_rate = DC1394_FRAMERATE_3_75;
 799             else if( rate_f == 7.5 )
 800                 p_sys->frame_rate = DC1394_FRAMERATE_7_5;
 801             else if( rate_f == 15 )
 802                 p_sys->frame_rate = DC1394_FRAMERATE_15;
 803             else if( rate_f == 30 )
 804                 p_sys->frame_rate = DC1394_FRAMERATE_30;
 805             else if( rate_f == 60 )
 806                 p_sys->frame_rate = DC1394_FRAMERATE_60;
 807             else
 808             {
 809                 msg_Err( p_demux ,
 810                     "This program supports framerates of"
 811                     " 1.875, 3.75, 7.5, 15, 30, 60. "
 812                     "Please specify one of them. You have specified %s.",
 813                     token);
 814                 free(psz_dup);
 815                 return VLC_EGENERIC;
 816             }
 817             msg_Dbg( p_demux, "Requested frame rate : %s",token );
 818         }
 819         else if( strncmp( token, "resetbus", strlen( "resetbus" ) ) == 0 )
 820         {
 821             token += strlen("resetbus");
 822             p_sys->reset_bus = 1;
 823         }
 824         else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
 825         {
 826             int nr = 0;
 827             token += strlen("brightness=");
 828             nr = sscanf( token, "%u", &p_sys->brightness);
 829             if( nr != 1 )
 830             {
 831                 msg_Err( p_demux, "Bad brightness value '%s', "
 832                                   "must be an unsigned integer.",
 833                                   token );
 834                 free(psz_dup);
 835                 return VLC_EGENERIC;
 836             }
 837         }
 838         else if( strncmp( token, "buffers=", strlen( "buffers=" ) ) == 0 )
 839         {
 840             int nr = 0;
 841             int in_buf = 0;
 842             token += strlen("buffers=");
 843             nr = sscanf( token, "%d", &in_buf);
 844             if( nr != 1 || in_buf < 1 )
 845             {
 846                 msg_Err( p_demux, "DMA buffers must be 1 or greater." );
 847                 free(psz_dup);
 848                 return VLC_EGENERIC;
 849             }
 850             else p_sys->dma_buffers = in_buf;
 851         }
 852 #if 0
 853         // NOTE: If controller support is added back, more logic will needed to be added
 854         //       after the cameras are scanned.
 855         else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
 856         {
 857             int nr = 0;
 858             token += strlen("controller=");
 859             nr = sscanf( token, "%u", &p_sys->controller );
 860             if( nr != 1)
 861             {
 862                 msg_Err(p_demux, "Bad controller value '%s', "
 863                                  "must be an unsigned integer.",
 864                                  token );
 865                 return VLC_EGENERIC;
 866             }
 867         }
 868 #endif
 869         else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
 870         {
 871             int nr = 0;
 872             token += strlen("camera=");
 873             nr = sscanf(token,"%u",&p_sys->selected_camera);
 874             if( nr != 1)
 875             {
 876                 msg_Err( p_demux, "Bad camera number '%s', "
 877                                   "must be an unsigned integer.",
 878                                   token );
 879                 free(psz_dup);
 880                 return VLC_EGENERIC;
 881             }
 882         }
 883         else if( strncmp( token, "vdev=", strlen( "vdev=" ) ) == 0)
 884         {
 885             token += strlen("vdev=");
 886             p_sys->video_device = strdup(token);
 887             msg_Dbg( p_demux, "Using video device '%s'.", token );
 888         }
 889         else if( strncmp( token, "adev=", strlen( "adev=" ) ) == 0 )
 890         {
 891             token += strlen("adev=");
 892             p_sys->audio_device = strdup(token);
 893             msg_Dbg( p_demux, "Using audio device '%s'.", token );
 894         }
 895         else if( strncmp( token, "samplerate=", strlen( "samplerate=" ) ) == 0 )
 896         {
 897             token += strlen("samplerate=");
 898             sscanf( token, "%d", &p_sys->i_sample_rate );
 899         }
 900         else if( strncmp( token, "channels=", strlen("channels=" ) ) == 0 )
 901         {
 902             token += strlen("channels=");
 903             sscanf( token, "%d", &p_sys->channels );
 904         }
 905         else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
 906         {
 907             int nr = 0;
 908             token += strlen("focus=");
 909             nr = sscanf( token, "%u", &p_sys->focus );
 910             if( nr != 1 )
 911             {
 912                 msg_Err( p_demux, "Bad focus value '%s', "
 913                                   "must be an unsigned integer.",
 914                                   token );
 915                 free(psz_dup);
 916                 return VLC_EGENERIC;
 917             }
 918         }
 919         else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
 920         {
 921             token += strlen("uid=");
 922             sscanf( token, "0x%llx", &p_sys->selected_uid );
 923         }
 924     }
 925
 926     // The mode is a combination of size and format and not every format
 927     // is supported by every size.
 928     if( in_size)
 929     {
 930         if( strcmp( in_size, "160x120") == 0)
 931         {
 932             if( in_fmt && (strcmp( in_fmt, "YUV444") != 0) )
 933                 msg_Err(p_demux, "160x120 only supports YUV444 - forcing");
 934             p_sys->video_mode = DC1394_VIDEO_MODE_160x120_YUV444;
 935         }
 936         else if( strcmp( in_size, "320x240") == 0)
 937         {
 938             if( in_fmt && (strcmp( in_fmt, "YUV422") != 0) )
 939                 msg_Err(p_demux, "320x240 only supports YUV422 - forcing");
 940             p_sys->video_mode = DC1394_VIDEO_MODE_320x240_YUV422;
 941         }
 942     }
 943     else
 944     { // 640x480 default
 945         if( in_fmt )
 946         {
 947             if( strcmp( in_fmt, "RGB8") == 0)
 948                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_RGB8;
 949             else if( strcmp( in_fmt, "MONO8") == 0)
 950                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO8;
 951             else if( strcmp( in_fmt, "MONO16") == 0)
 952                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO16;
 953             else if( strcmp( in_fmt, "YUV411") == 0)
 954                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV411;
 955             else // YUV422 default
 956                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 957         }
 958         else // YUV422 default
 959             p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 960     }
 961     return VLC_SUCCESS;
 962 }