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 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%llx.",
 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_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         if( OpenAudioDev( p_demux ) == VLC_SUCCESS )
 404         {
 405             es_format_t fmt;
 406             es_format_Init( &fmt, AUDIO_ES, VLC_CODEC_S16L ); /* FIXME: hmm, ?? */
 407
 408             fmt.audio.i_channels = p_sys->channels ? p_sys->channels : 1;
 409             fmt.audio.i_rate = p_sys->i_sample_rate;
 410             fmt.audio.i_bitspersample = 16;
 411             fmt.audio.i_blockalign = fmt.audio.i_channels *
 412                                      fmt.audio.i_bitspersample / 8;
 413             fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
 414                             fmt.audio.i_bitspersample;
 415
 416             msg_Dbg( p_demux, "New audio es %d channels %dHz",
 417             fmt.audio.i_channels, fmt.audio.i_rate );
 418
 419             p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
 420         }
 421     }
 422
 423     /* have the camera start sending us data */
 424     if( dc1394_video_set_transmission( p_sys->camera,
 425                        DC1394_ON ) != DC1394_SUCCESS )
 426     {
 427         msg_Err( p_demux, "Unable to start camera iso transmission" );
 428         dc1394_capture_stop( p_sys->camera );
 429         Close( p_this );
 430         return VLC_EGENERIC;
 431     }
 432     msg_Dbg( p_demux, "Set iso transmission" );
 433     // TODO: reread camera
 434     return VLC_SUCCESS;
 435 }
 436
 437 static int OpenAudioDev( demux_t *p_demux )
 438 {
 439     demux_sys_t *p_sys = p_demux->p_sys;
 440     char *psz_device = p_sys->audio_device;
 441     int i_format = AFMT_S16_LE;
 442     int result;
 443
 444     p_sys->fd_audio = utf8_open( psz_device, O_RDONLY | O_NONBLOCK );
 445     if( p_sys->fd_audio  < 0 )
 446     {
 447         msg_Err( p_demux, "Cannot open audio device (%s)", psz_device );
 448         return VLC_EGENERIC;
 449     }
 450
 451     if( !p_sys->i_sample_rate )
 452         p_sys->i_sample_rate = 44100;
 453
 454     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SETFMT, &i_format );
 455     if( (result  < 0) || (i_format != AFMT_S16_LE) )
 456     {
 457         msg_Err( p_demux, "Cannot set audio format (16b little endian) "
 458                           "(%d)", i_format );
 459         goto error;
 460     }
 461
 462     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_CHANNELS, &p_sys->channels );
 463     if( result < 0 )
 464     {
 465         msg_Err( p_demux, "Cannot set audio channels count (%d)",
 466                  p_sys->channels );
 467         goto error;
 468     }
 469
 470     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SPEED, &p_sys->i_sample_rate );
 471     if( result < 0 )
 472     {
 473         msg_Err( p_demux, "Cannot set audio sample rate (%d)",
 474          p_sys->i_sample_rate );
 475         goto error;
 476     }
 477
 478     msg_Dbg( p_demux, "Opened adev=`%s' %s %dHz",
 479              psz_device,
 480              (p_sys->channels > 1) ? "stereo" : "mono",
 481              p_sys->i_sample_rate );
 482
 483     p_sys->i_audio_max_frame_size = 32 * 1024;
 484
 485     return VLC_SUCCESS;
 486
 487 error:
 488     CloseAudioDev( p_demux );
 489     p_sys->fd_audio = -1;
 490     return VLC_EGENERIC;
 491 }
 492
 493 static inline void CloseAudioDev( demux_t *p_demux )
 494 {
 495     demux_sys_t *p_sys = p_demux->p_sys;
 496
 497     if( p_sys->fd_audio >= 0 )
 498         close( p_sys->fd_audio );
 499 }
 500
 501 /*****************************************************************************
 502  * Close:
 503  *****************************************************************************/
 504 static void Close( vlc_object_t *p_this )
 505 {
 506     demux_t     *p_demux = (demux_t*)p_this;
 507     demux_sys_t *p_sys = p_demux->p_sys;
 508
 509     /* Stop data transmission */
 510     if( dc1394_video_set_transmission( p_sys->camera,
 511                        DC1394_OFF ) != DC1394_SUCCESS )
 512         msg_Err( p_demux, "Unable to stop camera iso transmission" );
 513
 514     /* Close camera */
 515     dc1394_capture_stop( p_sys->camera );
 516
 517     CloseAudioDev( p_demux );
 518
 519     dc1394_camera_free(p_sys->camera);
 520     dc1394_free(p_sys->p_dccontext);
 521
 522     free( p_sys->audio_device );
 523     free( p_sys );
 524 }
 525
 526 #if 0
 527 static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
 528 {
 529     char u,v,y;
 530     u_char  *sc;
 531     u_char  *dc;
 532
 533     sc = (u_char *)src + (spos*2);
 534     if( spos % 2 )
 535     {
 536         v = sc[0];
 537         y = sc[1];
 538         u = *(sc -2);
 539     }
 540     else
 541     {
 542         u = sc[0];
 543         y = sc[1];
 544         v = sc[2];
 545     }
 546     dc = (u_char *)dst+(dpos*2);
 547     if( dpos % 2 )
 548     {
 549         dc[0] = v;
 550         dc[1] = y;
 551     }
 552     else
 553     {
 554         dc[0] = u;
 555         dc[1] = y;
 556     }
 557 }
 558 #endif
 559
 560 /*****************************************************************************
 561  * Demux:
 562  *****************************************************************************/
 563 static block_t *GrabVideo( demux_t *p_demux )
 564 {
 565     demux_sys_t *p_sys = p_demux->p_sys;
 566     block_t     *p_block = NULL;
 567
 568     if( dc1394_capture_dequeue( p_sys->camera,
 569                 DC1394_CAPTURE_POLICY_WAIT,
 570                 &p_sys->frame ) != DC1394_SUCCESS )
 571     {
 572         msg_Err( p_demux, "Unable to capture a frame" );
 573         return NULL;
 574     }
 575
 576     p_block = block_New( p_demux, p_sys->frame->size[0] *
 577                                   p_sys->frame->size[1] * 2 );
 578     if( !p_block )
 579     {
 580         msg_Err( p_demux, "Can not get block" );
 581         return NULL;
 582     }
 583
 584     if( !p_sys->frame->image )
 585     {
 586         msg_Err (p_demux, "Capture buffer empty");
 587         block_Release( p_block );
 588         return NULL;
 589     }
 590
 591     memcpy( p_block->p_buffer, (const char *)p_sys->frame->image,
 592             p_sys->width * p_sys->height * 2 );
 593
 594     p_block->i_pts = p_block->i_dts = mdate();
 595     dc1394_capture_enqueue( p_sys->camera, p_sys->frame );
 596     return p_block;
 597 }
 598
 599 static block_t *GrabAudio( demux_t *p_demux )
 600 {
 601     demux_sys_t *p_sys = p_demux->p_sys;
 602     struct audio_buf_info buf_info;
 603     block_t *p_block = NULL;
 604     int i_read = 0;
 605     int i_correct = 0;
 606     int result = 0;
 607
 608     p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
 609     if( !p_block )
 610     {
 611         msg_Warn( p_demux, "Cannot get buffer" );
 612         return NULL;
 613     }
 614
 615     i_read = read( p_sys->fd_audio, p_block->p_buffer,
 616                    p_sys->i_audio_max_frame_size );
 617
 618     if( i_read <= 0 )
 619         return NULL;
 620
 621     p_block->i_buffer = i_read;
 622
 623     /* Correct the date because of kernel buffering */
 624     i_correct = i_read;
 625     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_GETISPACE, &buf_info );
 626     if( result == 0 )
 627         i_correct += buf_info.bytes;
 628
 629     p_block->i_pts = p_block->i_dts =
 630                         mdate() - INT64_C(1000000) * (mtime_t)i_correct /
 631                         2 / p_sys->channels / p_sys->i_sample_rate;
 632     return p_block;
 633 }
 634
 635 static int Demux( demux_t *p_demux )
 636 {
 637     demux_sys_t *p_sys = p_demux->p_sys;
 638     block_t *p_blocka = NULL;
 639     block_t *p_blockv = NULL;
 640
 641     /* Try grabbing audio frames first */
 642     if( p_sys->fd_audio >= 0 )
 643         p_blocka = GrabAudio( p_demux );
 644
 645     /* Try grabbing video frame */
 646     p_blockv = GrabVideo( p_demux );
 647
 648     if( !p_blocka && !p_blockv )
 649     {
 650         /* Sleep so we do not consume all the cpu, 10ms seems
 651          * like a good value (100fps)
 652          */
 653         msleep( 10000 );
 654         return 1;
 655     }
 656
 657     if( p_blocka )
 658     {
 659         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blocka->i_pts );
 660         es_out_Send( p_demux->out, p_sys->p_es_audio, p_blocka );
 661     }
 662
 663     if( p_blockv )
 664     {
 665         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blockv->i_pts );
 666         es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
 667     }
 668     return 1;
 669 }
 670
 671 /*****************************************************************************
 672  * Control:
 673  *****************************************************************************/
 674 static int Control( demux_t *p_demux, int i_query, va_list args )
 675 {
 676     VLC_UNUSED( p_demux );
 677     switch( i_query )
 678     {
 679         /* Special for access_demux */
 680         case DEMUX_CAN_PAUSE:
 681         case DEMUX_CAN_SEEK:
 682         case DEMUX_SET_PAUSE_STATE:
 683         case DEMUX_CAN_CONTROL_PACE:
 684             *va_arg( args, bool * ) = false;
 685             return VLC_SUCCESS;
 686
 687         case DEMUX_GET_PTS_DELAY:
 688             *va_arg( args, int64_t * ) = (int64_t)DEFAULT_PTS_DELAY;
 689             return VLC_SUCCESS;
 690
 691         case DEMUX_GET_TIME:
 692             *va_arg( args, int64_t * ) = mdate();
 693             return VLC_SUCCESS;
 694
 695         /* TODO implement others */
 696         default:
 697             return VLC_EGENERIC;
 698     }
 699     return VLC_EGENERIC;
 700 }
 701
 702 static int process_options( demux_t *p_demux )
 703 {
 704     demux_sys_t *p_sys = p_demux->p_sys;
 705     char *psz_dup;
 706     char *psz_parser;
 707     char *token = NULL;
 708     char *state = NULL;
 709     const char *in_size = NULL;
 710     const char *in_fmt = NULL;
 711     float rate_f;
 712
 713     psz_dup = strdup( p_demux->psz_path );
 714     psz_parser = psz_dup;
 715     for( token = strtok_r( psz_parser,":",&state); token;
 716          token = strtok_r( NULL, ":", &state ) )
 717     {
 718         if( strncmp( token, "size=", strlen("size=") ) == 0 )
 719         {
 720             token += strlen("size=");
 721             if( strncmp( token, "160x120", 7 ) == 0 )
 722             {
 723                 /* TODO - UYV444 chroma converter is needed ...
 724                     * video size of 160x120 is temporarily disabled
 725                     */
 726                 msg_Err( p_demux,
 727                     "video size of 160x120 is actually disabled for lack of"
 728                     "chroma support. It will relased ASAP, until then try "
 729                     "an higher size (320x240 and 640x480 are fully supported)" );
 730                 free(psz_dup);
 731                 return VLC_EGENERIC;
 732 #if 0
 733                 in_size = "160x120";
 734                 p_sys->width = 160;
 735                 p_sys->height = 120;
 736 #endif
 737             }
 738             else if( strncmp( token, "320x240", 7 ) == 0 )
 739             {
 740                 in_size = "320x240";
 741                 p_sys->width = 320;
 742                 p_sys->height = 240;
 743             }
 744             else if( strncmp( token, "640x480", 7 ) == 0 )
 745             {
 746                 in_size = "640x480";
 747                 p_sys->width = 640;
 748                 p_sys->height = 480;
 749             }
 750             else
 751             {
 752                 msg_Err( p_demux,
 753                     "This program currently suppots frame sizes of"
 754                     " 160x120, 320x240, and 640x480. "
 755                     "Please specify one of them. You have specified %s.",
 756                     token );
 757                 free(psz_dup);
 758                 return VLC_EGENERIC;
 759             }
 760             msg_Dbg( p_demux, "Requested video size : %s",token );
 761         }
 762         if( strncmp( token, "format=", strlen("format=") ) == 0 )
 763         {
 764             token += strlen("format=");
 765             if( strncmp( token, "YUV411", 6 ) == 0 )
 766             {
 767                 in_fmt = "YUV411";
 768             }
 769             else if( strncmp( token, "YUV422", 6 ) == 0 )
 770             {
 771                 in_fmt = "YUV422";
 772             }
 773             else if( strncmp( token, "YUV444", 6 ) == 0 )
 774             {
 775                 in_fmt = "YUV444";
 776             }
 777             else if( strncmp( token, "RGB8", 4 ) == 0 )
 778             {
 779                 in_fmt = "RGB8";
 780             }
 781             else if( strncmp( token, "MONO8", 5 ) == 0 )
 782             {
 783                 in_fmt = "MONO8";
 784             }
 785             else if( strncmp( token, "MONO16", 6 ) == 0 )
 786             {
 787                 in_fmt = "MONO16";
 788             }
 789             else
 790             {
 791                 msg_Err( p_demux, "Invalid format %s.", token );
 792                 free(psz_dup);
 793                 return VLC_EGENERIC;
 794             }
 795             msg_Dbg( p_demux, "Requested video format : %s", token );
 796         }
 797         else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
 798         {
 799             token += strlen("fps=");
 800             sscanf( token, "%g", &rate_f );
 801             if( rate_f == 1.875 )
 802                 p_sys->frame_rate = DC1394_FRAMERATE_1_875;
 803             else if( rate_f == 3.75 )
 804                 p_sys->frame_rate = DC1394_FRAMERATE_3_75;
 805             else if( rate_f == 7.5 )
 806                 p_sys->frame_rate = DC1394_FRAMERATE_7_5;
 807             else if( rate_f == 15 )
 808                 p_sys->frame_rate = DC1394_FRAMERATE_15;
 809             else if( rate_f == 30 )
 810                 p_sys->frame_rate = DC1394_FRAMERATE_30;
 811             else if( rate_f == 60 )
 812                 p_sys->frame_rate = DC1394_FRAMERATE_60;
 813             else
 814             {
 815                 msg_Err( p_demux ,
 816                     "This program supports framerates of"
 817                     " 1.875, 3.75, 7.5, 15, 30, 60. "
 818                     "Please specify one of them. You have specified %s.",
 819                     token);
 820                 free(psz_dup);
 821                 return VLC_EGENERIC;
 822             }
 823             msg_Dbg( p_demux, "Requested frame rate : %s",token );
 824         }
 825         else if( strncmp( token, "resetbus", strlen( "resetbus" ) ) == 0 )
 826         {
 827             token += strlen("resetbus");
 828             p_sys->reset_bus = 1;
 829         }
 830         else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
 831         {
 832             int nr = 0;
 833             token += strlen("brightness=");
 834             nr = sscanf( token, "%u", &p_sys->brightness);
 835             if( nr != 1 )
 836             {
 837                 msg_Err( p_demux, "Bad brightness value '%s', "
 838                                   "must be an unsigned integer.",
 839                                   token );
 840                 free(psz_dup);
 841                 return VLC_EGENERIC;
 842             }
 843         }
 844         else if( strncmp( token, "buffers=", strlen( "buffers=" ) ) == 0 )
 845         {
 846             int nr = 0;
 847             int in_buf = 0;
 848             token += strlen("buffers=");
 849             nr = sscanf( token, "%d", &in_buf);
 850             if( nr != 1 || in_buf < 1 )
 851             {
 852                 msg_Err( p_demux, "DMA buffers must be 1 or greater." );
 853                 free(psz_dup);
 854                 return VLC_EGENERIC;
 855             }
 856             else p_sys->dma_buffers = in_buf;
 857         }
 858 #if 0
 859         // NOTE: If controller support is added back, more logic will needed to be added
 860         //       after the cameras are scanned.
 861         else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
 862         {
 863             int nr = 0;
 864             token += strlen("controller=");
 865             nr = sscanf( token, "%u", &p_sys->controller );
 866             if( nr != 1)
 867             {
 868                 msg_Err(p_demux, "Bad controller value '%s', "
 869                                  "must be an unsigned integer.",
 870                                  token );
 871                 return VLC_EGENERIC;
 872             }
 873         }
 874 #endif
 875         else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
 876         {
 877             int nr = 0;
 878             token += strlen("camera=");
 879             nr = sscanf(token,"%u",&p_sys->selected_camera);
 880             if( nr != 1)
 881             {
 882                 msg_Err( p_demux, "Bad camera number '%s', "
 883                                   "must be an unsigned integer.",
 884                                   token );
 885                 free(psz_dup);
 886                 return VLC_EGENERIC;
 887             }
 888         }
 889         else if( strncmp( token, "vdev=", strlen( "vdev=" ) ) == 0)
 890         {
 891             token += strlen("vdev=");
 892             p_sys->video_device = strdup(token);
 893             msg_Dbg( p_demux, "Using video device '%s'.", token );
 894         }
 895         else if( strncmp( token, "adev=", strlen( "adev=" ) ) == 0 )
 896         {
 897             token += strlen("adev=");
 898             p_sys->audio_device = strdup(token);
 899             msg_Dbg( p_demux, "Using audio device '%s'.", token );
 900         }
 901         else if( strncmp( token, "samplerate=", strlen( "samplerate=" ) ) == 0 )
 902         {
 903             token += strlen("samplerate=");
 904             sscanf( token, "%d", &p_sys->i_sample_rate );
 905         }
 906         else if( strncmp( token, "channels=", strlen("channels=" ) ) == 0 )
 907         {
 908             token += strlen("channels=");
 909             sscanf( token, "%d", &p_sys->channels );
 910         }
 911         else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
 912         {
 913             int nr = 0;
 914             token += strlen("focus=");
 915             nr = sscanf( token, "%u", &p_sys->focus );
 916             if( nr != 1 )
 917             {
 918                 msg_Err( p_demux, "Bad focus value '%s', "
 919                                   "must be an unsigned integer.",
 920                                   token );
 921                 free(psz_dup);
 922                 return VLC_EGENERIC;
 923             }
 924         }
 925         else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
 926         {
 927             token += strlen("uid=");
 928             sscanf( token, "0x%llx", &p_sys->selected_uid );
 929         }
 930     }
 931
 932     // The mode is a combination of size and format and not every format
 933     // is supported by every size.
 934     if( in_size)
 935     {
 936         if( strcmp( in_size, "160x120") == 0)
 937         {
 938             if( in_fmt && (strcmp( in_fmt, "YUV444") != 0) )
 939                 msg_Err(p_demux, "160x120 only supports YUV444 - forcing");
 940             p_sys->video_mode = DC1394_VIDEO_MODE_160x120_YUV444;
 941         }
 942         else if( strcmp( in_size, "320x240") == 0)
 943         {
 944             if( in_fmt && (strcmp( in_fmt, "YUV422") != 0) )
 945                 msg_Err(p_demux, "320x240 only supports YUV422 - forcing");
 946             p_sys->video_mode = DC1394_VIDEO_MODE_320x240_YUV422;
 947         }
 948     }
 949     else
 950     { // 640x480 default
 951         if( in_fmt )
 952         {
 953             if( strcmp( in_fmt, "RGB8") == 0)
 954                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_RGB8;
 955             else if( strcmp( in_fmt, "MONO8") == 0)
 956                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO8;
 957             else if( strcmp( in_fmt, "MONO16") == 0)
 958                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_MONO16;
 959             else if( strcmp( in_fmt, "YUV411") == 0)
 960                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV411;
 961             else // YUV422 default
 962                 p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 963         }
 964         else // YUV422 default
 965             p_sys->video_mode = DC1394_VIDEO_MODE_640x480_YUV422;
 966     }
 967     return VLC_SUCCESS;
 968 }