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

   1 /*****************************************************************************
   2  * dc1394.c: firewire input module
   3  *****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   5  *
   6  * Authors: Xant Majere <xant@xant.net>
   7  *
   8  *****************************************************************************
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation;
  12  * version 2 of the License.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  *
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_vout.h>
  37 #include <vlc_demux.h>
  38
  39
  40 #ifdef HAVE_FCNTL_H
  41 #   include <fcntl.h>
  42 #endif
  43 #ifdef HAVE_UNISTD_H
  44 #   include <unistd.h>
  45 #elif defined( WIN32 ) && !defined( UNDER_CE )
  46 #   include <io.h>
  47 #endif
  48
  49 #include <sys/ioctl.h>
  50 #include <sys/soundcard.h>
  51
  52 #include <libraw1394/raw1394.h>
  53 #include <libdc1394/dc1394_control.h>
  54
  55 #define MAX_IEEE1394_HOSTS 32
  56 #define MAX_CAMERA_NODES 32
  57
  58 /*****************************************************************************
  59  * Module descriptor
  60  *****************************************************************************/
  61 static int  Open ( vlc_object_t * );
  62 static void Close( vlc_object_t * );
  63 static void OpenAudioDev( demux_t *p_demux );
  64 static inline void CloseAudioDev( demux_t *p_demux );
  65
  66 vlc_module_begin();
  67     set_description( N_("dc1394 input") );
  68     set_capability( "access_demux", 10 );
  69     add_shortcut( "dc1394" );
  70     set_callbacks( Open, Close );
  71 vlc_module_end();
  72
  73 typedef struct __dc_camera
  74 {
  75     int port;
  76     nodeid_t node;
  77     u_int64_t uid;
  78 } dc_camera;
  79
  80 typedef struct demux_sys_t
  81 {
  82     dc1394_cameracapture camera;
  83     picture_t            pic;
  84     int                  dma_capture;
  85 #define DMA_OFF 0
  86 #define DMA_ON 1
  87     int                 num_ports;
  88     int                 num_cameras;
  89     int                 selected_camera;
  90     u_int64_t           selected_uid;
  91
  92     dc_camera           *camera_nodes;
  93     dc1394_camerainfo   camera_info;
  94     dc1394_miscinfo     misc_info;
  95     raw1394handle_t     fd_video;
  96     quadlet_t           supported_framerates;
  97
  98     int                 width;
  99     int                 height;
 100     int                 frame_size;
 101     int                 frame_rate;
 102     unsigned int        brightness;
 103     unsigned int        focus;
 104     char                *dma_device;
 105     es_out_id_t         *p_es_video;
 106
 107     /* audio stuff */
 108     int                 i_sample_rate;
 109     int                 channels;
 110     int                 i_audio_max_frame_size;
 111     int                 fd_audio;
 112     char                *audio_device;
 113 #define NO_ROTATION 0
 114 #define ROTATION_LEFT 1
 115 #define ROTATION_RIGHT 2
 116     es_out_id_t         *p_es_audio;
 117 } dc1394_sys;
 118
 119 /*****************************************************************************
 120  * Local prototypes
 121  *****************************************************************************/
 122 static int Demux( demux_t *p_demux );
 123 static int Control( demux_t *, int, va_list );
 124 static block_t *GrabVideo( demux_t *p_demux );
 125 static block_t *GrabAudio( demux_t *p_demux );
 126 static int process_options( demux_t *p_demux);
 127
 128 /*****************************************************************************
 129  * ScanCameras
 130  *****************************************************************************/
 131 static void ScanCameras( dc1394_sys *sys, demux_t *p_demux )
 132 {
 133     struct raw1394_portinfo portinfo[MAX_IEEE1394_HOSTS];
 134     raw1394handle_t tempFd;
 135     dc1394_camerainfo  info;
 136     dc_camera *node_list = NULL;
 137     nodeid_t  *nodes = NULL;
 138     int num_ports = 0;
 139     int num_cameras = 0;
 140     int nodecount;
 141     int i, n;
 142
 143     memset( &portinfo, 0, sizeof(portinfo) );
 144
 145     msg_Dbg( p_demux, "Scanning for ieee1394 ports ..." );
 146
 147     tempFd = raw1394_new_handle();
 148     if( !tempFd )
 149         return VLC_EGENERIC;
 150     raw1394_get_port_info( tempFd, portinfo, MAX_IEEE1394_HOSTS);
 151     raw1394_destroy_handle( tempFd );
 152
 153     for( i=0; i < MAX_IEEE1394_HOSTS; i++ )
 154     {
 155         /* check if port exists and has at least one node*/
 156         if( !portinfo[i].nodes )
 157             continue;
 158         nodes = NULL;
 159         nodecount = 0;
 160         tempFd = dc1394_create_handle( i );
 161
 162         /* skip this port if we can't obtain a valid handle */
 163         if( !tempFd )
 164             continue;
 165         msg_Dbg( p_demux, "Found ieee1394 port %d (%s) ... "
 166                           "checking for camera nodes",
 167                           i, portinfo[i].name );
 168         num_ports++;
 169
 170         nodes = dc1394_get_camera_nodes( tempFd, &nodecount, 0 );
 171         if( nodecount )
 172         {
 173             msg_Dbg( p_demux, "Found %d dc1394 cameras on port %d (%s)",
 174                      nodecount, i, portinfo[i].name );
 175
 176             if( node_list )
 177                 node_list = realloc( node_list, sizeof(dc_camera) * (num_cameras+nodecount) );
 178             else
 179                 node_list = malloc( sizeof(dc_camera) * nodecount);
 180
 181             for( n = 0; n < nodecount; n++ )
 182             {
 183                 int result = 0;
 184
 185                 result = dc1394_get_camera_info( tempFd, nodes[n], &info );
 186                 if( result == DC1394_SUCCESS )
 187                 {
 188                     node_list[num_cameras+n].uid = info.euid_64;
 189                 }
 190                 node_list[num_cameras+n].node = nodes[n];
 191                 node_list[num_cameras+n].port = i;
 192             }
 193             num_cameras += nodecount;
 194         }
 195         else
 196             msg_Dbg( p_demux, "no cameras found  on port %d (%s)",
 197                      i, portinfo[i].name );
 198
 199         if( tempFd )
 200             dc1394_destroy_handle( tempFd );
 201     }
 202     sys->num_ports = num_ports;
 203     sys->num_cameras = num_cameras;
 204     sys->camera_nodes = node_list;
 205 }
 206
 207 /*****************************************************************************
 208  * Open:
 209  *****************************************************************************/
 210 static int Open( vlc_object_t *p_this )
 211 {
 212     demux_t     *p_demux = (demux_t*)p_this;
 213     demux_sys_t *p_sys;
 214     es_format_t fmt;
 215     int i;
 216     int i_width;
 217     int i_height;
 218     int i_aspect;
 219     int result = 0;
 220
 221     /* Set up p_demux */
 222     p_demux->pf_demux = Demux;
 223     p_demux->pf_control = Control;
 224     p_demux->info.i_update = 0;
 225     p_demux->info.i_title = 0;
 226     p_demux->info.i_seekpoint = 0;
 227
 228     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 229     if( !p_sys )
 230     {
 231         msg_Err( p_demux, "not enough memory available" );
 232         return VLC_ENOMEM;
 233     }
 234     memset( p_sys, 0, sizeof( demux_sys_t ) );
 235     memset( &fmt, 0, sizeof( es_format_t ) );
 236
 237     /* DEFAULTS */
 238     p_sys->frame_size = MODE_640x480_YUV422;
 239     p_sys->width      = 640;
 240     p_sys->height     = 480;
 241     p_sys->frame_rate = FRAMERATE_30;
 242     p_sys->brightness = 200;
 243     p_sys->focus      = 0;
 244     p_sys->dma_capture = DMA_ON; /* defaults to VIDEO1394 capture mode */
 245     p_sys->fd_audio   = -1;
 246     p_sys->fd_video   = NULL;
 247     p_sys->camera_nodes = NULL;
 248     p_sys->selected_camera = 0;
 249     p_sys->dma_device = NULL;
 250     p_sys->selected_uid = 0;
 251
 252     /* PROCESS INPUT OPTIONS */
 253     if( process_options(p_demux) != VLC_SUCCESS )
 254     {
 255         msg_Err( p_demux, "Bad MRL, please check the option line "
 256                           "(MRL was: %s)",
 257                           p_demux->psz_path );
 258         free( p_sys );
 259         p_demux->p_sys = NULL;
 260         return VLC_EGENERIC;
 261     }
 262
 263     msg_Dbg( p_demux, "Selected camera %d", p_sys->selected_camera );
 264     msg_Dbg( p_demux, "Selected uid 0x%llx", p_sys->selected_uid );
 265
 266     ScanCameras( p_sys, p_demux );
 267     if( !p_sys->camera_nodes )
 268     {
 269         msg_Err( p_demux, "No camera found !!" );
 270         free( p_sys );
 271         p_demux->p_sys = NULL;
 272         return VLC_EGENERIC;
 273     }
 274
 275     if( p_sys->selected_uid )
 276     {
 277         int found = 0;
 278         for( i=0; i < p_sys->num_cameras; i++ )
 279         {
 280             if( p_sys->camera_nodes[i].uid == p_sys->selected_uid )
 281             {
 282                 p_sys->selected_camera = i;
 283                 found++;
 284                 break;
 285             }
 286         }
 287         if( !found )
 288         {
 289             msg_Err( p_demux, "Can't find camera with uid : 0x%llx.",
 290                      p_sys->selected_uid );
 291             Close( p_this );
 292             return VLC_EGENERIC;
 293         }
 294     }
 295     else if( p_sys->selected_camera >= p_sys->num_cameras )
 296     {
 297         msg_Err( p_demux, "there are not this many cameras. (%d/%d)",
 298                           p_sys->selected_camera, p_sys->num_cameras );
 299         Close( p_this );
 300         return VLC_EGENERIC;
 301     }
 302
 303     p_sys->fd_video = dc1394_create_handle(
 304                         p_sys->camera_nodes[p_sys->selected_camera].port );
 305     if( (int)p_sys->fd_video < 0 )
 306     {
 307         msg_Err( p_demux, "Can't init dc1394 handle" );
 308         Close( p_this );
 309         return VLC_EGENERIC;
 310     }
 311
 312     /* get camera info */
 313     result = dc1394_get_camera_info( p_sys->fd_video,
 314                         p_sys->camera_nodes[p_sys->selected_camera].node,
 315                         &p_sys->camera_info );
 316     if( result != DC1394_SUCCESS )
 317     {
 318         msg_Err( p_demux ,"unable to get camera info" );
 319         Close( p_this );
 320         return VLC_EGENERIC;
 321     }
 322
 323     dc1394_print_camera_info( &p_sys->camera_info );
 324     result = dc1394_get_camera_misc_info( p_sys->fd_video,
 325                         p_sys->camera_nodes[p_sys->selected_camera].node,
 326                         &p_sys->misc_info );
 327     if( result != DC1394_SUCCESS )
 328     {
 329         msg_Err( p_demux, "unable to get camera misc info" );
 330         Close( p_this );
 331         return VLC_EGENERIC;
 332     }
 333
 334     /* init camera and set some video options  */
 335     result = dc1394_init_camera( p_sys->camera_info.handle,
 336                                  p_sys->camera_info.id );
 337     if( result != DC1394_SUCCESS )
 338     {
 339         msg_Err( p_demux, "unable to get init dc1394 camera" );
 340         Close( p_this );
 341         return VLC_EGENERIC;
 342     }
 343
 344     if( p_sys->focus )
 345     {
 346         result = dc1394_set_focus( p_sys->camera_info.handle,
 347                         p_sys->camera_nodes[p_sys->selected_camera].node,
 348                         p_sys->focus );
 349         if( result != DC1394_SUCCESS )
 350         {
 351             msg_Err( p_demux, "unable to set initial focus to %u",
 352                      p_sys->focus );
 353         }
 354         msg_Dbg( p_demux, "Initial focus set to %u", p_sys->focus );
 355     }
 356
 357     result = dc1394_set_brightness( p_sys->camera_info.handle,
 358                         p_sys->camera_nodes[p_sys->selected_camera].node,
 359                         p_sys->brightness );
 360     if( result != DC1394_SUCCESS )
 361     {
 362         msg_Err( p_demux, "unable to set init brightness to %d",
 363                  p_sys->brightness);
 364         Close( p_this );
 365         return VLC_EGENERIC;
 366     }
 367
 368     result = dc1394_set_video_framerate( p_sys->camera_info.handle,
 369                         p_sys->camera_nodes[p_sys->selected_camera].node,
 370                         p_sys->frame_rate );
 371     if( result != DC1394_SUCCESS )
 372     {
 373         msg_Err( p_demux, "unable to set framerate to %d",
 374                  p_sys->frame_rate );
 375         Close( p_this );
 376         return VLC_EGENERIC;
 377     }
 378     p_sys->misc_info.framerate = p_sys->frame_rate;
 379
 380     result = dc1394_set_video_format( p_sys->camera_info.handle,
 381                         p_sys->camera_nodes[p_sys->selected_camera].node,
 382                         FORMAT_VGA_NONCOMPRESSED );
 383     if( result != DC1394_SUCCESS )
 384     {
 385         msg_Err( p_demux, "unable to set video format to VGA_NONCOMPRESSED" );
 386         Close( p_this );
 387         return VLC_EGENERIC;
 388     }
 389     p_sys->misc_info.format = FORMAT_VGA_NONCOMPRESSED;
 390
 391     result = dc1394_set_video_mode( p_sys->camera_info.handle,
 392                         p_sys->camera_nodes[p_sys->selected_camera].node,
 393                         p_sys->frame_size );
 394     if( result != DC1394_SUCCESS )
 395     {
 396         msg_Err( p_demux, "unable to set video mode" );
 397         Close( p_this );
 398         return VLC_EGENERIC;
 399     }
 400     p_sys->misc_info.mode = p_sys->frame_size;
 401
 402     /* reprobe everything */
 403     result = dc1394_get_camera_info( p_sys->camera_info.handle,
 404                                      p_sys->camera_info.id,
 405                                      &p_sys->camera_info );
 406     if( result != DC1394_SUCCESS )
 407     {
 408         msg_Err( p_demux, "Could not get camera basic information!" );
 409         Close( p_this );
 410         return VLC_EGENERIC;
 411     }
 412
 413     result = dc1394_get_camera_misc_info( p_sys->camera_info.handle,
 414                                           p_sys->camera_info.id,
 415                                           &p_sys->misc_info );
 416     if( result != DC1394_SUCCESS )
 417     {
 418         msg_Err( p_demux, "Could not get camera misc information!" );
 419         Close( p_this );
 420         return VLC_EGENERIC;
 421     }
 422
 423     /* set iso_channel */
 424     result = dc1394_set_iso_channel_and_speed( p_sys->camera_info.handle,
 425                                                p_sys->camera_info.id,
 426                                                p_sys->selected_camera,
 427                                                SPEED_400 );
 428     if( result != DC1394_SUCCESS )
 429     {
 430         msg_Err( p_demux, "Could not set iso channel!" );
 431         Close( p_this );
 432         return VLC_EGENERIC;
 433     }
 434     msg_Dbg( p_demux, "Using ISO channel %d", p_sys->misc_info.iso_channel );
 435     p_sys->misc_info.iso_channel = p_sys->selected_camera;
 436
 437     /* and setup capture */
 438     if( p_sys->dma_capture )
 439     {
 440         result = dc1394_dma_setup_capture( p_sys->camera_info.handle,
 441                         p_sys->camera_info.id,
 442                         p_sys->misc_info.iso_channel,
 443                         p_sys->misc_info.format,
 444                         p_sys->misc_info.mode,
 445                         SPEED_400,
 446                         p_sys->misc_info.framerate,
 447                         10, 0,
 448                         p_sys->dma_device,
 449                         &p_sys->camera );
 450         if( result != DC1394_SUCCESS )
 451         {
 452             msg_Err( p_demux ,"unable to setup camera" );
 453             Close( p_this );
 454             return VLC_EGENERIC;
 455         }
 456     }
 457     else
 458     {
 459         result = dc1394_setup_capture( p_sys->camera_info.handle,
 460                     p_sys->camera_info.id,
 461                     p_sys->misc_info.iso_channel,
 462                     p_sys->misc_info.format,
 463                     p_sys->misc_info.mode,
 464                     SPEED_400,
 465                     p_sys->misc_info.framerate,
 466                     &p_sys->camera );
 467         if( result != DC1394_SUCCESS)
 468         {
 469             msg_Err( p_demux ,"unable to setup camera" );
 470             Close( p_this );
 471             return VLC_EGENERIC;
 472         }
 473     }
 474
 475     /* TODO - UYV444 chroma converter is missing, when it will be available
 476      * fourcc will become variable (and not just a fixed value for UYVY)
 477      */
 478     i_width = p_sys->camera.frame_width;
 479     i_height = p_sys->camera.frame_height;
 480
 481     i_aspect = vout_InitPicture( VLC_OBJECT(p_demux), &p_sys->pic,
 482                     VLC_FOURCC('U', 'Y', 'V', 'Y'),
 483                     i_width, i_height,
 484                     i_width * VOUT_ASPECT_FACTOR / i_height );
 485
 486     es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC('U', 'Y', 'V', 'Y') );
 487
 488     fmt.video.i_width = i_width;
 489     fmt.video.i_height = i_height;
 490
 491     msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
 492              (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 493
 494     p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
 495
 496     if( p_sys->audio_device )
 497     {
 498         OpenAudioDev( p_demux );
 499         if( p_sys->fd_audio >= 0 )
 500         {
 501             es_format_t fmt;
 502             es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC('a','r','a','w') );
 503
 504             fmt.audio.i_channels = p_sys->channels ? p_sys->channels : 1;
 505             fmt.audio.i_rate = p_sys->i_sample_rate;
 506             fmt.audio.i_bitspersample = 16; /* FIXME: hmm, ?? */
 507             fmt.audio.i_blockalign = fmt.audio.i_channels *
 508                                      fmt.audio.i_bitspersample / 8;
 509             fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
 510                             fmt.audio.i_bitspersample;
 511
 512             msg_Dbg( p_demux, "new audio es %d channels %dHz",
 513             fmt.audio.i_channels, fmt.audio.i_rate );
 514
 515             p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
 516         }
 517     }
 518
 519     /* have the camera start sending us data */
 520     result = dc1394_start_iso_transmission( p_sys->camera_info.handle,
 521                                             p_sys->camera_info.id );
 522     if( result != DC1394_SUCCESS )
 523     {
 524         msg_Err( p_demux, "unable to start camera iso transmission" );
 525         if( p_sys->dma_capture )
 526         {
 527             dc1394_dma_release_camera( p_sys->fd_video, &p_sys->camera );
 528         }
 529         else
 530         {
 531             dc1394_release_camera( p_sys->fd_video, &p_sys->camera );
 532         }
 533         Close( p_this );
 534         return VLC_EGENERIC;
 535     }
 536     p_sys->misc_info.is_iso_on = DC1394_TRUE;
 537     return VLC_SUCCESS;
 538 }
 539
 540 static void OpenAudioDev( demux_t *p_demux )
 541 {
 542     demux_sys_t *p_sys = p_demux->p_sys;
 543     char *psz_device = p_sys->audio_device;
 544     int i_format = AFMT_S16_LE;
 545     int result;
 546
 547     p_sys->fd_audio = open( psz_device, O_RDONLY | O_NONBLOCK );
 548     if( p_sys->fd_audio  < 0 )
 549     {
 550         msg_Err( p_demux, "cannot open audio device (%s)", psz_device );
 551         CloseAudioDev( p_demux );
 552     }
 553
 554     if( !p_sys->i_sample_rate )
 555         p_sys->i_sample_rate = 44100;
 556
 557     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SETFMT, &i_format );
 558     if( (result  < 0) || (i_format != AFMT_S16_LE) )
 559     {
 560         msg_Err( p_demux, "cannot set audio format (16b little endian) "
 561                           "(%d)", i_format );
 562         CloseAudioDev( p_demux );
 563     }
 564
 565     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_CHANNELS, &p_sys->channels );
 566     if( result < 0 )
 567     {
 568         msg_Err( p_demux, "cannot set audio channels count (%d)",
 569                  p_sys->channels );
 570         CloseAudioDev( p_demux );
 571     }
 572
 573     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SPEED, &p_sys->i_sample_rate );
 574     if( result < 0 )
 575     {
 576         msg_Err( p_demux, "cannot set audio sample rate (%s)", p_sys->i_sample_rate );
 577         CloseAudioDev( p_demux );
 578     }
 579
 580     msg_Dbg( p_demux, "opened adev=`%s' %s %dHz",
 581              psz_device,
 582              (p_sys->channels > 1) ? "stereo" : "mono",
 583              p_sys->i_sample_rate );
 584
 585     p_sys->i_audio_max_frame_size = 32 * 1024;
 586 }
 587
 588 static inline void CloseAudioDev( demux_t *p_demux )
 589 {
 590     demux_sys_t *p_sys = NULL;
 591
 592     if( p_demux )
 593     {
 594         p_sys = p_demux->p_sys;
 595         if( p_sys->fd_audio >= 0 )
 596             close( p_sys->fd_audio );
 597     }
 598 }
 599
 600 /*****************************************************************************
 601  * Close:
 602  *****************************************************************************/
 603 static void Close( vlc_object_t *p_this )
 604 {
 605     demux_t     *p_demux = (demux_t*)p_this;
 606     demux_sys_t *p_sys = p_demux->p_sys;
 607     int result = 0;
 608
 609     /* Stop data transmission */
 610     result = dc1394_stop_iso_transmission( p_sys->fd_video,
 611                                            p_sys->camera.node );
 612     if( result != DC1394_SUCCESS )
 613     {
 614         msg_Err( p_demux, "couldn't stop the camera" );
 615     }
 616
 617     /* Close camera */
 618     if( p_sys->dma_capture )
 619     {
 620         dc1394_dma_unlisten( p_sys->fd_video, &p_sys->camera );
 621         dc1394_dma_release_camera( p_sys->fd_video, &p_sys->camera );
 622     }
 623     else
 624     {
 625         dc1394_release_camera( p_sys->fd_video, &p_sys->camera );
 626     }
 627
 628     if( p_sys->fd_video )
 629         dc1394_destroy_handle( p_sys->fd_video );
 630     CloseAudioDev( p_demux );
 631
 632     free( p_sys->camera_nodes );
 633     free( p_sys->audio_device );
 634
 635     free( p_sys );
 636 }
 637
 638 static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
 639 {
 640     char u,v,y;
 641     u_char  *sc;
 642     u_char  *dc;
 643
 644     sc = (u_char *)src + (spos*2);
 645     if( spos % 2 )
 646     {
 647         v = sc[0];
 648         y = sc[1];
 649         u = *(sc -2);
 650     }
 651     else
 652     {
 653         u = sc[0];
 654         y = sc[1];
 655         v = sc[2];
 656     }
 657     dc = (u_char *)dst+(dpos*2);
 658     if( dpos % 2 )
 659     {
 660         dc[0] = v;
 661         dc[1] = y;
 662     }
 663     else
 664     {
 665         dc[0] = u;
 666         dc[1] = y;
 667     }
 668 }
 669
 670 /*****************************************************************************
 671  * Demux:
 672  *****************************************************************************/
 673 static block_t *GrabVideo( demux_t *p_demux )
 674 {
 675     demux_sys_t *p_sys = p_demux->p_sys;
 676     block_t     *p_block = NULL;
 677     int result = 0;
 678
 679     if( p_sys->dma_capture )
 680     {
 681         result = dc1394_dma_single_capture( &p_sys->camera );
 682         if( result != DC1394_SUCCESS )
 683         {
 684             msg_Err( p_demux, "unable to capture a frame" );
 685             return NULL;
 686         }
 687     }
 688     else
 689     {
 690         result = dc1394_single_capture( p_sys->camera_info.handle,
 691                                         &p_sys->camera );
 692         if( result != DC1394_SUCCESS )
 693         {
 694             msg_Err( p_demux, "unable to capture a frame" );
 695             return NULL;
 696         }
 697     }
 698
 699     p_block = block_New( p_demux, p_sys->camera.frame_width *
 700                                   p_sys->camera.frame_height * 2 );
 701     if( !p_block )
 702     {
 703         msg_Err( p_demux, "cannot get block" );
 704         return NULL;
 705     }
 706
 707     if( !p_sys->camera.capture_buffer )
 708     {
 709         msg_Err (p_demux, "caputer buffer empty");
 710         block_Release( p_block );
 711         return NULL;
 712     }
 713
 714     memcpy( p_block->p_buffer, (const char *)p_sys->camera.capture_buffer,
 715             p_sys->camera.frame_width * p_sys->camera.frame_height * 2 );
 716
 717     p_block->i_pts = p_block->i_dts = mdate();
 718     if( p_sys->dma_capture )
 719         dc1394_dma_done_with_buffer( &p_sys->camera );
 720     return p_block;
 721 }
 722
 723 static block_t *GrabAudio( demux_t *p_demux )
 724 {
 725     demux_sys_t *p_sys = p_demux->p_sys;
 726     struct audio_buf_info buf_info;
 727     block_t *p_block = NULL;
 728     int i_read = 0;
 729     int i_correct = 0;
 730     int result = 0;
 731
 732     p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
 733     if( !p_block )
 734     {
 735         msg_Warn( p_demux, "cannot get buffer" );
 736         return NULL;
 737     }
 738
 739     i_read = read( p_sys->fd_audio, p_block->p_buffer,
 740                    p_sys->i_audio_max_frame_size );
 741
 742     if( i_read <= 0 )
 743         return NULL;
 744
 745     p_block->i_buffer = i_read;
 746
 747     /* Correct the date because of kernel buffering */
 748     i_correct = i_read;
 749     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_GETISPACE, &buf_info );
 750     if( result == 0 )
 751         i_correct += buf_info.bytes;
 752
 753     p_block->i_pts = p_block->i_dts =
 754                         mdate() - INT64_C(1000000) * (mtime_t)i_correct /
 755                         2 / p_sys->channels / p_sys->i_sample_rate;
 756     return p_block;
 757 }
 758
 759 static int Demux( demux_t *p_demux )
 760 {
 761     demux_sys_t *p_sys = p_demux->p_sys;
 762     block_t *p_blocka = NULL;
 763     block_t *p_blockv = NULL;
 764
 765     /* Try grabbing audio frames first */
 766     if( p_sys->fd_audio > 0 )
 767         p_blocka = GrabAudio( p_demux );
 768
 769     /* Try grabbing video frame */
 770     if( (int)p_sys->fd_video > 0 )
 771         p_blockv = GrabVideo( p_demux );
 772
 773     if( !p_blocka && !p_blockv )
 774     {
 775         /* Sleep so we do not consume all the cpu, 10ms seems
 776          * like a good value (100fps)
 777          */
 778         msleep( 10000 );
 779         return 1;
 780     }
 781
 782     if( p_blocka )
 783     {
 784         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blocka->i_pts );
 785         es_out_Send( p_demux->out, p_sys->p_es_audio, p_blocka );
 786     }
 787
 788     if( p_blockv )
 789     {
 790         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blockv->i_pts );
 791         es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
 792     }
 793     return 1;
 794 }
 795
 796 /*****************************************************************************
 797  * Control:
 798  *****************************************************************************/
 799 static int Control( demux_t *p_demux, int i_query, va_list args )
 800 {
 801     bool *pb;
 802     int64_t    *pi64;
 803
 804     switch( i_query )
 805     {
 806         /* Special for access_demux */
 807         case DEMUX_CAN_PAUSE:
 808         case DEMUX_CAN_SEEK:
 809         case DEMUX_SET_PAUSE_STATE:
 810         case DEMUX_CAN_CONTROL_PACE:
 811             pb = (bool*)va_arg( args, bool * );
 812             *pb = false;
 813             return VLC_SUCCESS;
 814
 815         case DEMUX_GET_PTS_DELAY:
 816             pi64 = (int64_t*)va_arg( args, int64_t * );
 817             *pi64 = (int64_t)DEFAULT_PTS_DELAY;
 818             return VLC_SUCCESS;
 819
 820         case DEMUX_GET_TIME:
 821             pi64 = (int64_t*)va_arg( args, int64_t * );
 822             *pi64 = mdate();
 823             return VLC_SUCCESS;
 824
 825         /* TODO implement others */
 826         default:
 827             return VLC_EGENERIC;
 828     }
 829     return VLC_EGENERIC;
 830 }
 831
 832 static int process_options( demux_t *p_demux )
 833 {
 834     demux_sys_t *p_sys = p_demux->p_sys;
 835     char *psz_dup;
 836     char *psz_parser;
 837     char *token = NULL;
 838     char *state = NULL;
 839     float rate_f;
 840
 841     if( strncmp(p_demux->psz_access, "dc1394", 6) != 0 )
 842         return VLC_EGENERIC;
 843
 844     psz_dup = strdup( p_demux->psz_path );
 845     psz_parser = psz_dup;
 846     for( token = strtok_r( psz_parser,":",&state); token;
 847          token = strtok_r( NULL, ":", &state ) )
 848     {
 849         if( strncmp( token, "size=", strlen("size=") ) == 0 )
 850         {
 851             token += strlen("size=");
 852             if( strncmp( token, "160x120", 7 ) == 0 )
 853             {
 854                 /* TODO - UYV444 chroma converter is needed ...
 855                     * video size of 160x120 is temporarily disabled
 856                     */
 857                 msg_Err( p_demux,
 858                     "video size of 160x120 is actually disabled for lack of chroma "
 859                     "support. It will relased ASAP, until then try an higher size "
 860                     "(320x240 and 640x480 are fully supported)" );
 861                 free( psz_dup );
 862                 return VLC_EGENERIC;
 863 #if 0
 864                 p_sys->frame_size = MODE_160x120_YUV444;
 865                 p_sys->width = 160;
 866                 p_sys->height = 120;
 867 #endif
 868             }
 869             else if( strncmp( token, "320x240", 7 ) == 0 )
 870             {
 871                 p_sys->frame_size = MODE_320x240_YUV422;
 872                 p_sys->width = 320;
 873                 p_sys->height = 240;
 874             }
 875             else if( strncmp( token, "640x480", 7 ) == 0 )
 876             {
 877                 p_sys->frame_size = MODE_640x480_YUV422;
 878                 p_sys->width = 640;
 879                 p_sys->height = 480;
 880             }
 881             else
 882             {
 883                 msg_Err( p_demux,
 884                     "This program currently suppots frame sizes of"
 885                     " 160x120, 320x240, and 640x480. "
 886                     "Please specify one of them. You have specified %s.",
 887                     token );
 888                 free( psz_dup );
 889                 return VLC_EGENERIC;
 890             }
 891             msg_Dbg( p_demux, "Requested video size : %s",token );
 892         }
 893         else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
 894         {
 895             token += strlen("fps=");
 896             sscanf( token, "%g", &rate_f );
 897             if( rate_f == 1.875 )
 898                 p_sys->frame_rate = FRAMERATE_1_875;
 899             else if( rate_f == 3.75 )
 900                 p_sys->frame_rate = FRAMERATE_3_75;
 901             else if( rate_f == 7.5 )
 902                 p_sys->frame_rate = FRAMERATE_7_5;
 903             else if( rate_f == 15 )
 904                 p_sys->frame_rate = FRAMERATE_15;
 905             else if( rate_f == 30 )
 906                 p_sys->frame_rate = FRAMERATE_30;
 907             else if( rate_f == 60 )
 908                 p_sys->frame_rate = FRAMERATE_60;
 909             else
 910             {
 911                 msg_Err( p_demux ,
 912                     "This program supports framerates of"
 913                     " 1.875, 3.75, 7.5, 15, 30, 60. "
 914                     "Please specify one of them. You have specified %s.",
 915                     token);
 916                 free( psz_dup );
 917                 return VLC_EGENERIC;
 918             }
 919             msg_Dbg( p_demux, "Requested frame rate : %s",token );
 920         }
 921         else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
 922         {
 923             int nr = 0;
 924             token += strlen("brightness=");
 925             nr = sscanf( token, "%u", &p_sys->brightness);
 926             if( nr != 1 )
 927             {
 928                 msg_Err( p_demux, "Bad brightness value '%s', "
 929                                   "must be an unsigned integer.",
 930                                   token );
 931                 free( psz_dup );
 932                 return VLC_EGENERIC;
 933             }
 934         }
 935 #if 0
 936         else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
 937         {
 938             int nr = 0;
 939             token += strlen("controller=");
 940             nr = sscanf( token, "%u", &p_sys->controller );
 941             if( nr != 1)
 942             {
 943                 msg_Err(p_demux, "Bad controller value '%s', "
 944                                  "must be an unsigned integer.",
 945                                  token );
 946                 return VLC_EGENERIC;
 947             }
 948         }
 949 #endif
 950         else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
 951         {
 952             int nr = 0;
 953             token += strlen("camera=");
 954             nr = sscanf(token,"%u",&p_sys->selected_camera);
 955             if( nr != 1)
 956             {
 957                 msg_Err( p_demux, "Bad camera number '%s', "
 958                                   "must be an unsigned integer.",
 959                                   token );
 960                 free( psz_dup );
 961                 return VLC_EGENERIC;
 962             }
 963         }
 964         else if( strncmp( token, "capture=", strlen( "capture=" ) ) == 0)
 965         {
 966             token += strlen("capture=");
 967             if( strncmp(token, "raw1394",7) == 0 )
 968             {
 969                 msg_Dbg( p_demux, "DMA capture disabled!" );
 970                 p_sys->dma_capture = DMA_OFF;
 971             }
 972             else if( strncmp(token,"video1394",9) == 0 )
 973             {
 974                 msg_Dbg( p_demux, "DMA capture enabled!" );
 975                 p_sys->dma_capture = DMA_ON;
 976             }
 977             else
 978             {
 979                 msg_Err(p_demux, "Bad capture method value '%s', "
 980                                  "it can be 'raw1394' or 'video1394'.",
 981                                 token );
 982                 free( psz_dup );
 983                 return VLC_EGENERIC;
 984             }
 985         }
 986         else if( strncmp( token, "adev=", strlen( "adev=" ) ) == 0 )
 987         {
 988             token += strlen("adev=");
 989             p_sys->audio_device = strdup(token);
 990             msg_Dbg( p_demux, "Using audio device '%s'.", token );
 991         }
 992         else if( strncmp( token, "samplerate=", strlen( "samplerate=" ) ) == 0 )
 993         {
 994             token += strlen("samplerate=");
 995             sscanf( token, "%d", &p_sys->i_sample_rate );
 996         }
 997         else if( strncmp( token, "channels=", strlen("channels=" ) ) == 0 )
 998         {
 999             token += strlen("channels=");
1000             sscanf( token, "%d", &p_sys->channels );
1001         }
1002         else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
1003         {
1004             token += strlen("focus=");
1005             sscanf( token, "%u", &p_sys->focus );
1006         }
1007         else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
1008         {
1009             token += strlen("uid=");
1010             sscanf( token, "0x%llx", &p_sys->selected_uid );
1011         }
1012     }
1013     free( psz_dup );
1014     return VLC_SUCCESS;
1015 }
1016