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_fs.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 int 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     int i_ret = VLC_EGENERIC;
 126
 127     msg_Dbg( p_demux, "Scanning for ieee1394 ports ..." );
 128
 129     if( dc1394_camera_enumerate (sys->p_dccontext, &list) != DC1394_SUCCESS )
 130     {
 131         msg_Err(p_demux, "Can not ennumerate cameras");
 132         goto end;
 133     }
 134
 135     if( list->num == 0 )
 136     {
 137         msg_Err(p_demux, "Can not find cameras");
 138         goto end;
 139     }
 140
 141     sys->num_cameras = list->num;
 142     msg_Dbg( p_demux, "Found %d dc1394 cameras.", list->num);
 143
 144     if( sys->selected_uid )
 145     {
 146         int found = 0;
 147         for( unsigned i = 0; i < sys->num_cameras; i++ )
 148         {
 149             if( list->ids[i].guid == sys->selected_uid )
 150             {
 151                 sys->camera = dc1394_camera_new(sys->p_dccontext,
 152                                                 list->ids[i].guid);
 153                 found++;
 154                 break;
 155             }
 156         }
 157         if( !found )
 158         {
 159             msg_Err( p_demux, "Can't find camera with uid : 0x%"PRIx64".",
 160                      sys->selected_uid );
 161             goto end;
 162         }
 163     }
 164     else if( sys->selected_camera >= (int)list->num )
 165     {
 166         msg_Err( p_demux, "There are not this many cameras. (%d/%d)",
 167                  sys->selected_camera, sys->num_cameras );
 168         goto end;
 169     }
 170     else if( sys->selected_camera >= 0 )
 171     {
 172         sys->camera = dc1394_camera_new(sys->p_dccontext,
 173                     list->ids[sys->selected_camera].guid);
 174     }
 175     else
 176     {
 177         sys->camera = dc1394_camera_new(sys->p_dccontext,
 178                                           list->ids[0].guid);
 179     }
 180
 181     i_ret = VLC_SUCCESS;
 182
 183 end:
 184     dc1394_camera_free_list (list);
 185     return i_ret;
 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_location );
 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         else
 322             msg_Dbg( p_demux, "Initial focus set to %u", p_sys->focus );
 323     }
 324
 325     if( dc1394_feature_set_value( p_sys->camera,
 326                   DC1394_FEATURE_FOCUS,
 327                   p_sys->brightness ) != DC1394_SUCCESS )
 328     {
 329         msg_Err( p_demux, "Unable to set initial brightness to %u",
 330                  p_sys->brightness );
 331     }
 332     else
 333         msg_Dbg( p_demux, "Initial brightness set to %u", p_sys->brightness );
 334
 335     if( dc1394_video_set_framerate( p_sys->camera,
 336                     p_sys->frame_rate ) != DC1394_SUCCESS )
 337     {
 338         msg_Err( p_demux, "Unable to set framerate");
 339         Close( p_this );
 340         return VLC_EGENERIC;
 341     }
 342
 343     if( dc1394_video_set_mode( p_sys->camera,
 344                    p_sys->video_mode ) != DC1394_SUCCESS )
 345     {
 346         msg_Err( p_demux, "Unable to set video mode");
 347         Close( p_this );
 348         return VLC_EGENERIC;
 349     }
 350
 351     if( dc1394_video_set_iso_speed( p_sys->camera,
 352                     DC1394_ISO_SPEED_400 ) != DC1394_SUCCESS )
 353     {
 354         msg_Err( p_demux, "Unable to set iso speed");
 355         Close( p_this );
 356         return VLC_EGENERIC;
 357     }
 358
 359     /* and setup capture */
 360     res = dc1394_capture_setup( p_sys->camera,
 361                     p_sys->dma_buffers,
 362                 DC1394_CAPTURE_FLAGS_DEFAULT);
 363     if( res != DC1394_SUCCESS )
 364     {
 365         if( res == DC1394_NO_BANDWIDTH )
 366         {
 367             msg_Err( p_demux ,"No bandwidth: try adding the "
 368              "\"resetbus\" option" );
 369         }
 370         else
 371         {
 372             msg_Err( p_demux ,"Unable to setup capture" );
 373         }
 374         Close( p_this );
 375         return VLC_EGENERIC;
 376     }
 377
 378     /* TODO - UYV444 chroma converter is missing, when it will be available
 379      * fourcc will become variable (and not just a fixed value for UYVY)
 380      */
 381     i_width = p_sys->width;
 382     i_height = p_sys->height;
 383
 384     if( picture_Setup( &p_sys->pic, VLC_CODEC_UYVY,
 385                        i_width, i_height, 1, 1 ) )
 386     {
 387         msg_Err( p_demux ,"unknown chroma" );
 388         Close( p_this );
 389         return VLC_EGENERIC;
 390     }
 391
 392     es_format_Init( &fmt, VIDEO_ES, VLC_CODEC_UYVY );
 393
 394     fmt.video.i_width = i_width;
 395     fmt.video.i_height = i_height;
 396
 397     msg_Dbg( p_demux, "Added new video es %4.4s %dx%d",
 398              (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 399
 400     p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
 401
 402     if( p_sys->audio_device )
 403     {
 404         if( OpenAudioDev( p_demux ) == VLC_SUCCESS )
 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 int 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 = vlc_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         return VLC_EGENERIC;
 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         goto error;
 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         goto error;
 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         goto error;
 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     return VLC_SUCCESS;
 487
 488 error:
 489     CloseAudioDev( p_demux );
 490     p_sys->fd_audio = -1;
 491     return VLC_EGENERIC;
 492 }
 493
 494 static inline void CloseAudioDev( demux_t *p_demux )
 495 {
 496     demux_sys_t *p_sys = p_demux->p_sys;
 497
 498     if( p_sys->fd_audio >= 0 )
 499         close( p_sys->fd_audio );
 500 }
 501
 502 /*****************************************************************************
 503  * Close:
 504  *****************************************************************************/
 505 static void Close( vlc_object_t *p_this )
 506 {
 507     demux_t     *p_demux = (demux_t*)p_this;
 508     demux_sys_t *p_sys = p_demux->p_sys;
 509
 510     /* Stop data transmission */
 511     if( dc1394_video_set_transmission( p_sys->camera,
 512                        DC1394_OFF ) != DC1394_SUCCESS )
 513         msg_Err( p_demux, "Unable to stop camera iso transmission" );
 514
 515     /* Close camera */
 516     dc1394_capture_stop( p_sys->camera );
 517
 518     CloseAudioDev( p_demux );
 519
 520     dc1394_camera_free(p_sys->camera);
 521     dc1394_free(p_sys->p_dccontext);
 522
 523     free( p_sys->video_device );
 524     free( p_sys->audio_device );
 525     free( p_sys );
 526 }
 527
 528 #if 0
 529 static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
 530 {
 531     char u,v,y;
 532     u_char  *sc;
 533     u_char  *dc;
 534
 535     sc = (u_char *)src + (spos*2);
 536     if( spos % 2 )
 537     {
 538         v = sc[0];
 539         y = sc[1];
 540         u = *(sc -2);
 541     }
 542     else
 543     {
 544         u = sc[0];
 545         y = sc[1];
 546         v = sc[2];
 547     }
 548     dc = (u_char *)dst+(dpos*2);
 549     if( dpos % 2 )
 550     {
 551         dc[0] = v;
 552         dc[1] = y;
 553     }
 554     else
 555     {
 556         dc[0] = u;
 557         dc[1] = y;
 558     }
 559 }
 560 #endif
 561
 562 /*****************************************************************************
 563  * Demux:
 564  *****************************************************************************/
 565 static block_t *GrabVideo( demux_t *p_demux )
 566 {
 567     demux_sys_t *p_sys = p_demux->p_sys;
 568     block_t     *p_block = NULL;
 569
 570     if( dc1394_capture_dequeue( p_sys->camera,
 571                 DC1394_CAPTURE_POLICY_WAIT,
 572                 &p_sys->frame ) != DC1394_SUCCESS )
 573     {
 574         msg_Err( p_demux, "Unable to capture a frame" );
 575         return NULL;
 576     }
 577
 578     p_block = block_New( p_demux, p_sys->frame->size[0] *
 579                                   p_sys->frame->size[1] * 2 );
 580     if( !p_block )
 581     {
 582         msg_Err( p_demux, "Can not get block" );
 583         return NULL;
 584     }
 585
 586     if( !p_sys->frame->image )
 587     {
 588         msg_Err (p_demux, "Capture buffer empty");
 589         block_Release( p_block );
 590         return NULL;
 591     }
 592
 593     memcpy( p_block->p_buffer, (const char *)p_sys->frame->image,
 594             p_sys->width * p_sys->height * 2 );
 595
 596     p_block->i_pts = p_block->i_dts = mdate();
 597     dc1394_capture_enqueue( p_sys->camera, p_sys->frame );
 598     return p_block;
 599 }
 600
 601 static block_t *GrabAudio( demux_t *p_demux )
 602 {
 603     demux_sys_t *p_sys = p_demux->p_sys;
 604     struct audio_buf_info buf_info;
 605     block_t *p_block = NULL;
 606     int i_read = 0;
 607     int i_correct = 0;
 608     int result = 0;
 609
 610     p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
 611     if( !p_block )
 612     {
 613         msg_Warn( p_demux, "Cannot get buffer" );
 614         return NULL;
 615     }
 616
 617     i_read = read( p_sys->fd_audio, p_block->p_buffer,
 618                    p_sys->i_audio_max_frame_size );
 619
 620     if( i_read <= 0 )
 621     {
 622         block_Release( p_block );
 623         return NULL;
 624     }
 625
 626     p_block->i_buffer = i_read;
 627
 628     /* Correct the date because of kernel buffering */
 629     i_correct = i_read;
 630     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_GETISPACE, &buf_info );
 631     if( result == 0 )
 632         i_correct += buf_info.bytes;
 633
 634     p_block->i_pts = p_block->i_dts =
 635                         mdate() - INT64_C(1000000) * (mtime_t)i_correct /
 636                         2 / p_sys->channels / p_sys->i_sample_rate;
 637     return p_block;
 638 }
 639
 640 static int Demux( demux_t *p_demux )
 641 {
 642     demux_sys_t *p_sys = p_demux->p_sys;
 643     block_t *p_blocka = NULL;
 644     block_t *p_blockv = NULL;
 645
 646     /* Try grabbing audio frames first */
 647     if( p_sys->fd_audio >= 0 )
 648         p_blocka = GrabAudio( p_demux );
 649
 650     /* Try grabbing video frame */
 651     p_blockv = GrabVideo( p_demux );
 652
 653     if( !p_blocka && !p_blockv )
 654     {
 655         /* Sleep so we do not consume all the cpu, 10ms seems
 656          * like a good value (100fps)
 657          */
 658         msleep( 10000 );
 659         return 1;
 660     }
 661
 662     if( p_blocka )
 663     {
 664         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blocka->i_pts );
 665         es_out_Send( p_demux->out, p_sys->p_es_audio, p_blocka );
 666     }
 667
 668     if( p_blockv )
 669     {
 670         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blockv->i_pts );
 671         es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
 672     }
 673     return 1;
 674 }
 675
 676 /*****************************************************************************
 677  * Control:
 678  *****************************************************************************/
 679 static int Control( demux_t *p_demux, int i_query, va_list args )
 680 {
 681     VLC_UNUSED( p_demux );
 682     switch( i_query )
 683     {
 684         /* Special for access_demux */
 685         case DEMUX_CAN_PAUSE:
 686         case DEMUX_CAN_SEEK:
 687         case DEMUX_SET_PAUSE_STATE:
 688         case DEMUX_CAN_CONTROL_PACE:
 689             *va_arg( args, bool * ) = false;
 690             return VLC_SUCCESS;
 691
 692         case DEMUX_GET_PTS_DELAY:
 693             *va_arg( args, int64_t * ) = (int64_t)DEFAULT_PTS_DELAY;
 694             return VLC_SUCCESS;
 695
 696         case DEMUX_GET_TIME:
 697             *va_arg( args, int64_t * ) = mdate();
 698             return VLC_SUCCESS;
 699
 700         /* TODO implement others */
 701         default:
 702             return VLC_EGENERIC;
 703     }
 704     return VLC_EGENERIC;
 705 }
 706
 707 static int process_options( demux_t *p_demux )
 708 {
 709     demux_sys_t *p_sys = p_demux->p_sys;
 710     char *psz_dup;
 711     char *psz_parser;
 712     char *token = NULL;
 713     char *state = NULL;
 714     const char *in_size = NULL;
 715     const char *in_fmt = NULL;
 716     float rate_f;
 717
 718     psz_dup = strdup( p_demux->psz_location );
 719     psz_parser = psz_dup;
 720     for( token = strtok_r( psz_parser,":",&state); token;
 721          token = strtok_r( NULL, ":", &state ) )
 722     {
 723         if( strncmp( token, "size=", strlen("size=") ) == 0 )
 724         {
 725             token += strlen("size=");
 726             if( strncmp( token, "160x120", 7 ) == 0 )
 727             {
 728                 /* TODO - UYV444 chroma converter is needed ...
 729                     * video size of 160x120 is temporarily disabled
 730                     */
 731                 msg_Err( p_demux,
 732                     "video size of 160x120 is actually disabled for lack of"
 733                     "chroma support. It will relased ASAP, until then try "
 734                     "an higher size (320x240 and 640x480 are fully supported)" );
 735                 free(psz_dup);
 736                 return VLC_EGENERIC;
 737 #if 0
 738                 in_size = "160x120";
 739                 p_sys->width = 160;
 740                 p_sys->height = 120;
 741 #endif
 742             }
 743             else if( strncmp( token, "320x240", 7 ) == 0 )
 744             {
 745                 in_size = "320x240";
 746                 p_sys->width = 320;
 747                 p_sys->height = 240;
 748             }
 749             else if( strncmp( token, "640x480", 7 ) == 0 )
 750             {
 751                 in_size = "640x480";
 752                 p_sys->width = 640;
 753                 p_sys->height = 480;
 754             }
 755             else
 756             {
 757                 msg_Err( p_demux,
 758                     "This program currently suppots frame sizes of"
 759                     " 160x120, 320x240, and 640x480. "
 760                     "Please specify one of them. You have specified %s.",
 761                     token );
 762                 free(psz_dup);
 763                 return VLC_EGENERIC;
 764             }
 765             msg_Dbg( p_demux, "Requested video size : %s",token );
 766         }
 767         if( strncmp( token, "format=", strlen("format=") ) == 0 )
 768         {
 769             token += strlen("format=");
 770             if( strncmp( token, "YUV411", 6 ) == 0 )
 771             {
 772                 in_fmt = "YUV411";
 773             }
 774             else if( strncmp( token, "YUV422", 6 ) == 0 )
 775             {
 776                 in_fmt = "YUV422";
 777             }
 778             else if( strncmp( token, "YUV444", 6 ) == 0 )
 779             {
 780                 in_fmt = "YUV444";
 781             }
 782             else if( strncmp( token, "RGB8", 4 ) == 0 )
 783             {
 784                 in_fmt = "RGB8";
 785             }
 786             else if( strncmp( token, "MONO8", 5 ) == 0 )
 787             {
 788                 in_fmt = "MONO8";
 789             }
 790             else if( strncmp( token, "MONO16", 6 ) == 0 )
 791             {
 792                 in_fmt = "MONO16";
 793             }
 794             else
 795             {
 796                 msg_Err( p_demux, "Invalid format %s.", token );
 797                 free(psz_dup);
 798                 return VLC_EGENERIC;
 799             }
 800             msg_Dbg( p_demux, "Requested video format : %s", token );
 801         }
 802         else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
 803         {
 804             token += strlen("fps=");
 805             sscanf( token, "%g", &rate_f );
 806             if( rate_f == 1.875 )
 807                 p_sys->frame_rate = DC1394_FRAMERATE_1_875;
 808             else if( rate_f == 3.75 )
 809                 p_sys->frame_rate = DC1394_FRAMERATE_3_75;
 810             else if( rate_f == 7.5 )
 811                 p_sys->frame_rate = DC1394_FRAMERATE_7_5;
 812             else if( rate_f == 15 )
 813                 p_sys->frame_rate = DC1394_FRAMERATE_15;
 814             else if( rate_f == 30 )
 815                 p_sys->frame_rate = DC1394_FRAMERATE_30;
 816             else if( rate_f == 60 )
 817                 p_sys->frame_rate = DC1394_FRAMERATE_60;
 818             else
 819             {
 820                 msg_Err( p_demux ,
 821                     "This program supports framerates of"
 822                     " 1.875, 3.75, 7.5, 15, 30, 60. "
 823                     "Please specify one of them. You have specified %s.",
 824                     token);
 825                 free(psz_dup);
 826                 return VLC_EGENERIC;
 827             }
 828             msg_Dbg( p_demux, "Requested frame rate : %s",token );
 829         }
 830         else if( strncmp( token, "resetbus", strlen( "resetbus" ) ) == 0 )
 831         {
 832             token += strlen("resetbus");
 833             p_sys->reset_bus = 1;
 834         }
 835         else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
 836         {
 837             int nr = 0;
 838             token += strlen("brightness=");
 839             nr = sscanf( token, "%u", &p_sys->brightness);
 840             if( nr != 1 )
 841             {
 842                 msg_Err( p_demux, "Bad brightness value '%s', "
 843                                   "must be an unsigned integer.",
 844                                   token );
 845                 free(psz_dup);
 846                 return VLC_EGENERIC;
 847             }
 848         }
 849         else if( strncmp( token, "buffers=", strlen( "buffers=" ) ) == 0 )
 850         {
 851             int nr = 0;
 852             int in_buf = 0;
 853             token += strlen("buffers=");
 854             nr = sscanf( token, "%d", &in_buf);
 855             if( nr != 1 || in_buf < 1 )
 856             {
 857                 msg_Err( p_demux, "DMA buffers must be 1 or greater." );
 858                 free(psz_dup);
 859                 return VLC_EGENERIC;
 860             }
 861             else p_sys->dma_buffers = in_buf;
 862         }
 863 #if 0
 864         // NOTE: If controller support is added back, more logic will needed to be added
 865         //       after the cameras are scanned.
 866         else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
 867         {
 868             int nr = 0;
 869             token += strlen("controller=");
 870             nr = sscanf( token, "%u", &p_sys->controller );
 871             if( nr != 1)
 872             {
 873                 msg_Err(p_demux, "Bad controller value '%s', "
 874                                  "must be an unsigned integer.",
 875                                  token );
 876                 return VLC_EGENERIC;
 877             }
 878         }
 879 #endif
 880         else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
 881         {
 882             int nr = 0;
 883             token += strlen("camera=");
 884             nr = sscanf(token,"%u",&p_sys->selected_camera);
 885             if( nr != 1)
 886             {
 887                 msg_Err( p_demux, "Bad camera number '%s', "
 888                                   "must be an unsigned integer.",
 889                                   token );
 890                 free(psz_dup);
 891                 return VLC_EGENERIC;
 892             }
 893         }
 894         else if( strncmp( token, "vdev=", strlen( "vdev=" ) ) == 0)
 895         {
 896             token += strlen("vdev=");
 897             p_sys->video_device = strdup(token);
 898             msg_Dbg( p_demux, "Using video device '%s'.", token );
 899         }
 900         else if( strncmp( token, "adev=", strlen( "adev=" ) ) == 0 )
 901         {
 902             token += strlen("adev=");
 903             p_sys->audio_device = strdup(token);
 904             msg_Dbg( p_demux, "Using audio device '%s'.", token );
 905         }
 906         else if( strncmp( token, "samplerate=", strlen( "samplerate=" ) ) == 0 )
 907         {
 908             token += strlen("samplerate=");
 909             sscanf( token, "%d", &p_sys->i_sample_rate );
 910         }
 911         else if( strncmp( token, "channels=", strlen("channels=" ) ) == 0 )
 912         {
 913             token += strlen("channels=");
 914             sscanf( token, "%d", &p_sys->channels );
 915         }
 916         else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
 917         {
 918             int nr = 0;
 919             token += strlen("focus=");
 920             nr = sscanf( token, "%u", &p_sys->focus );
 921             if( nr != 1 )
 922             {
 923                 msg_Err( p_demux, "Bad focus value '%s', "
 924                                   "must be an unsigned integer.",
 925                                   token );
 926                 free(psz_dup);
 927                 return VLC_EGENERIC;
 928             }
 929         }
 930         else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
 931         {
 932             token += strlen("uid=");
 933             sscanf( token, "0x%"SCNx64, &p_sys->selected_uid );
 934         }
 935     }
 936
 937     // The mode is a combination of size and format and not every format
 938     // is supported by every size.
 939     if( in_size)
 940     {
 941         if( strcmp( in_size, "160x120") == 0)
 942         {
 943             if( in_fmt && (strcmp( in_fmt, "YUV444") != 0) )
 944                 msg_Err(p_demux, "160x120 only supports YUV444 - forcing");
 945             p_sys->video_mode = DC1394_VIDEO_MODE_160x120_YUV444;
 946         }
 947         else if( strcmp( in_size, "320x240") == 0)
 948         {
 949             if( in_fmt && (strcmp( in_fmt, "YUV422") != 0) )
 950                 msg_Err(p_demux, "320x240 only supports YUV422 - forcing");
 951             p_sys->video_mode = DC1394_VIDEO_MODE_320x240_YUV422;
 952         }
 953     }
 954     else
 955     { // 640x480 default
 956         if( in_fmt )
 957         {
 958             if( strcmp( in_fmt, "RGB8") == 0)
 959                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_RGB8;
 960             else if( strcmp( in_fmt, "MONO8") == 0)
 961                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO8;
 962             else if( strcmp( in_fmt, "MONO16") == 0)
 963                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO16;
 964             else if( strcmp( in_fmt, "YUV411") == 0)
 965                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV411;
 966             else // YUV422 default
 967                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 968         }
 969         else // YUV422 default
 970             p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 971     }
 972
 973     free( psz_dup );
 974     return VLC_SUCCESS;
 975 }