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_common.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 = calloc( 1, sizeof( demux_sys_t ) );
 229     if( !p_sys )
 230         return VLC_ENOMEM;
 231     memset( &fmt, 0, sizeof( es_format_t ) );
 232
 233     /* DEFAULTS */
 234     p_sys->frame_size = MODE_640x480_YUV422;
 235     p_sys->width      = 640;
 236     p_sys->height     = 480;
 237     p_sys->frame_rate = FRAMERATE_30;
 238     p_sys->brightness = 200;
 239     p_sys->focus      = 0;
 240     p_sys->dma_capture = DMA_ON; /* defaults to VIDEO1394 capture mode */
 241     p_sys->fd_audio   = -1;
 242     p_sys->fd_video   = NULL;
 243     p_sys->camera_nodes = NULL;
 244     p_sys->selected_camera = 0;
 245     p_sys->dma_device = NULL;
 246     p_sys->selected_uid = 0;
 247
 248     /* PROCESS INPUT OPTIONS */
 249     if( process_options(p_demux) != VLC_SUCCESS )
 250     {
 251         msg_Err( p_demux, "Bad MRL, please check the option line "
 252                           "(MRL was: %s)",
 253                           p_demux->psz_path );
 254         free( p_sys );
 255         p_demux->p_sys = NULL;
 256         return VLC_EGENERIC;
 257     }
 258
 259     msg_Dbg( p_demux, "Selected camera %d", p_sys->selected_camera );
 260     msg_Dbg( p_demux, "Selected uid 0x%llx", p_sys->selected_uid );
 261
 262     ScanCameras( p_sys, p_demux );
 263     if( !p_sys->camera_nodes )
 264     {
 265         msg_Err( p_demux, "No camera found !!" );
 266         free( p_sys );
 267         p_demux->p_sys = NULL;
 268         return VLC_EGENERIC;
 269     }
 270
 271     if( p_sys->selected_uid )
 272     {
 273         int found = 0;
 274         for( i=0; i < p_sys->num_cameras; i++ )
 275         {
 276             if( p_sys->camera_nodes[i].uid == p_sys->selected_uid )
 277             {
 278                 p_sys->selected_camera = i;
 279                 found++;
 280                 break;
 281             }
 282         }
 283         if( !found )
 284         {
 285             msg_Err( p_demux, "Can't find camera with uid : 0x%llx.",
 286                      p_sys->selected_uid );
 287             Close( p_this );
 288             return VLC_EGENERIC;
 289         }
 290     }
 291     else if( p_sys->selected_camera >= p_sys->num_cameras )
 292     {
 293         msg_Err( p_demux, "there are not this many cameras. (%d/%d)",
 294                           p_sys->selected_camera, p_sys->num_cameras );
 295         Close( p_this );
 296         return VLC_EGENERIC;
 297     }
 298
 299     p_sys->fd_video = dc1394_create_handle(
 300                         p_sys->camera_nodes[p_sys->selected_camera].port );
 301     if( (int)p_sys->fd_video < 0 )
 302     {
 303         msg_Err( p_demux, "Can't init dc1394 handle" );
 304         Close( p_this );
 305         return VLC_EGENERIC;
 306     }
 307
 308     /* get camera info */
 309     result = dc1394_get_camera_info( p_sys->fd_video,
 310                         p_sys->camera_nodes[p_sys->selected_camera].node,
 311                         &p_sys->camera_info );
 312     if( result != DC1394_SUCCESS )
 313     {
 314         msg_Err( p_demux ,"unable to get camera info" );
 315         Close( p_this );
 316         return VLC_EGENERIC;
 317     }
 318
 319     dc1394_print_camera_info( &p_sys->camera_info );
 320     result = dc1394_get_camera_misc_info( p_sys->fd_video,
 321                         p_sys->camera_nodes[p_sys->selected_camera].node,
 322                         &p_sys->misc_info );
 323     if( result != DC1394_SUCCESS )
 324     {
 325         msg_Err( p_demux, "unable to get camera misc info" );
 326         Close( p_this );
 327         return VLC_EGENERIC;
 328     }
 329
 330     /* init camera and set some video options  */
 331     result = dc1394_init_camera( p_sys->camera_info.handle,
 332                                  p_sys->camera_info.id );
 333     if( result != DC1394_SUCCESS )
 334     {
 335         msg_Err( p_demux, "unable to get init dc1394 camera" );
 336         Close( p_this );
 337         return VLC_EGENERIC;
 338     }
 339
 340     if( p_sys->focus )
 341     {
 342         result = dc1394_set_focus( p_sys->camera_info.handle,
 343                         p_sys->camera_nodes[p_sys->selected_camera].node,
 344                         p_sys->focus );
 345         if( result != DC1394_SUCCESS )
 346         {
 347             msg_Err( p_demux, "unable to set initial focus to %u",
 348                      p_sys->focus );
 349         }
 350         msg_Dbg( p_demux, "Initial focus set to %u", p_sys->focus );
 351     }
 352
 353     result = dc1394_set_brightness( p_sys->camera_info.handle,
 354                         p_sys->camera_nodes[p_sys->selected_camera].node,
 355                         p_sys->brightness );
 356     if( result != DC1394_SUCCESS )
 357     {
 358         msg_Err( p_demux, "unable to set init brightness to %d",
 359                  p_sys->brightness);
 360         Close( p_this );
 361         return VLC_EGENERIC;
 362     }
 363
 364     result = dc1394_set_video_framerate( p_sys->camera_info.handle,
 365                         p_sys->camera_nodes[p_sys->selected_camera].node,
 366                         p_sys->frame_rate );
 367     if( result != DC1394_SUCCESS )
 368     {
 369         msg_Err( p_demux, "unable to set framerate to %d",
 370                  p_sys->frame_rate );
 371         Close( p_this );
 372         return VLC_EGENERIC;
 373     }
 374     p_sys->misc_info.framerate = p_sys->frame_rate;
 375
 376     result = dc1394_set_video_format( p_sys->camera_info.handle,
 377                         p_sys->camera_nodes[p_sys->selected_camera].node,
 378                         FORMAT_VGA_NONCOMPRESSED );
 379     if( result != DC1394_SUCCESS )
 380     {
 381         msg_Err( p_demux, "unable to set video format to VGA_NONCOMPRESSED" );
 382         Close( p_this );
 383         return VLC_EGENERIC;
 384     }
 385     p_sys->misc_info.format = FORMAT_VGA_NONCOMPRESSED;
 386
 387     result = dc1394_set_video_mode( p_sys->camera_info.handle,
 388                         p_sys->camera_nodes[p_sys->selected_camera].node,
 389                         p_sys->frame_size );
 390     if( result != DC1394_SUCCESS )
 391     {
 392         msg_Err( p_demux, "unable to set video mode" );
 393         Close( p_this );
 394         return VLC_EGENERIC;
 395     }
 396     p_sys->misc_info.mode = p_sys->frame_size;
 397
 398     /* reprobe everything */
 399     result = dc1394_get_camera_info( p_sys->camera_info.handle,
 400                                      p_sys->camera_info.id,
 401                                      &p_sys->camera_info );
 402     if( result != DC1394_SUCCESS )
 403     {
 404         msg_Err( p_demux, "Could not get camera basic information!" );
 405         Close( p_this );
 406         return VLC_EGENERIC;
 407     }
 408
 409     result = dc1394_get_camera_misc_info( p_sys->camera_info.handle,
 410                                           p_sys->camera_info.id,
 411                                           &p_sys->misc_info );
 412     if( result != DC1394_SUCCESS )
 413     {
 414         msg_Err( p_demux, "Could not get camera misc information!" );
 415         Close( p_this );
 416         return VLC_EGENERIC;
 417     }
 418
 419     /* set iso_channel */
 420     result = dc1394_set_iso_channel_and_speed( p_sys->camera_info.handle,
 421                                                p_sys->camera_info.id,
 422                                                p_sys->selected_camera,
 423                                                SPEED_400 );
 424     if( result != DC1394_SUCCESS )
 425     {
 426         msg_Err( p_demux, "Could not set iso channel!" );
 427         Close( p_this );
 428         return VLC_EGENERIC;
 429     }
 430     msg_Dbg( p_demux, "Using ISO channel %d", p_sys->misc_info.iso_channel );
 431     p_sys->misc_info.iso_channel = p_sys->selected_camera;
 432
 433     /* and setup capture */
 434     if( p_sys->dma_capture )
 435     {
 436         result = dc1394_dma_setup_capture( p_sys->camera_info.handle,
 437                         p_sys->camera_info.id,
 438                         p_sys->misc_info.iso_channel,
 439                         p_sys->misc_info.format,
 440                         p_sys->misc_info.mode,
 441                         SPEED_400,
 442                         p_sys->misc_info.framerate,
 443                         10, 0,
 444                         p_sys->dma_device,
 445                         &p_sys->camera );
 446         if( result != DC1394_SUCCESS )
 447         {
 448             msg_Err( p_demux ,"unable to setup camera" );
 449             Close( p_this );
 450             return VLC_EGENERIC;
 451         }
 452     }
 453     else
 454     {
 455         result = dc1394_setup_capture( p_sys->camera_info.handle,
 456                     p_sys->camera_info.id,
 457                     p_sys->misc_info.iso_channel,
 458                     p_sys->misc_info.format,
 459                     p_sys->misc_info.mode,
 460                     SPEED_400,
 461                     p_sys->misc_info.framerate,
 462                     &p_sys->camera );
 463         if( result != DC1394_SUCCESS)
 464         {
 465             msg_Err( p_demux ,"unable to setup camera" );
 466             Close( p_this );
 467             return VLC_EGENERIC;
 468         }
 469     }
 470
 471     /* TODO - UYV444 chroma converter is missing, when it will be available
 472      * fourcc will become variable (and not just a fixed value for UYVY)
 473      */
 474     i_width = p_sys->camera.frame_width;
 475     i_height = p_sys->camera.frame_height;
 476
 477     i_aspect = vout_InitPicture( VLC_OBJECT(p_demux), &p_sys->pic,
 478                     VLC_FOURCC('U', 'Y', 'V', 'Y'),
 479                     i_width, i_height,
 480                     i_width * VOUT_ASPECT_FACTOR / i_height );
 481
 482     es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC('U', 'Y', 'V', 'Y') );
 483
 484     fmt.video.i_width = i_width;
 485     fmt.video.i_height = i_height;
 486
 487     msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
 488              (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height );
 489
 490     p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
 491
 492     if( p_sys->audio_device )
 493     {
 494         OpenAudioDev( p_demux );
 495         if( p_sys->fd_audio >= 0 )
 496         {
 497             es_format_t fmt;
 498             es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC('a','r','a','w') );
 499
 500             fmt.audio.i_channels = p_sys->channels ? p_sys->channels : 1;
 501             fmt.audio.i_rate = p_sys->i_sample_rate;
 502             fmt.audio.i_bitspersample = 16; /* FIXME: hmm, ?? */
 503             fmt.audio.i_blockalign = fmt.audio.i_channels *
 504                                      fmt.audio.i_bitspersample / 8;
 505             fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
 506                             fmt.audio.i_bitspersample;
 507
 508             msg_Dbg( p_demux, "new audio es %d channels %dHz",
 509             fmt.audio.i_channels, fmt.audio.i_rate );
 510
 511             p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
 512         }
 513     }
 514
 515     /* have the camera start sending us data */
 516     result = dc1394_start_iso_transmission( p_sys->camera_info.handle,
 517                                             p_sys->camera_info.id );
 518     if( result != DC1394_SUCCESS )
 519     {
 520         msg_Err( p_demux, "unable to start camera iso transmission" );
 521         if( p_sys->dma_capture )
 522         {
 523             dc1394_dma_release_camera( p_sys->fd_video, &p_sys->camera );
 524         }
 525         else
 526         {
 527             dc1394_release_camera( p_sys->fd_video, &p_sys->camera );
 528         }
 529         Close( p_this );
 530         return VLC_EGENERIC;
 531     }
 532     p_sys->misc_info.is_iso_on = DC1394_TRUE;
 533     return VLC_SUCCESS;
 534 }
 535
 536 static void OpenAudioDev( demux_t *p_demux )
 537 {
 538     demux_sys_t *p_sys = p_demux->p_sys;
 539     char *psz_device = p_sys->audio_device;
 540     int i_format = AFMT_S16_LE;
 541     int result;
 542
 543     p_sys->fd_audio = open( psz_device, O_RDONLY | O_NONBLOCK );
 544     if( p_sys->fd_audio  < 0 )
 545     {
 546         msg_Err( p_demux, "cannot open audio device (%s)", psz_device );
 547         CloseAudioDev( p_demux );
 548     }
 549
 550     if( !p_sys->i_sample_rate )
 551         p_sys->i_sample_rate = 44100;
 552
 553     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SETFMT, &i_format );
 554     if( (result  < 0) || (i_format != AFMT_S16_LE) )
 555     {
 556         msg_Err( p_demux, "cannot set audio format (16b little endian) "
 557                           "(%d)", i_format );
 558         CloseAudioDev( p_demux );
 559     }
 560
 561     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_CHANNELS, &p_sys->channels );
 562     if( result < 0 )
 563     {
 564         msg_Err( p_demux, "cannot set audio channels count (%d)",
 565                  p_sys->channels );
 566         CloseAudioDev( p_demux );
 567     }
 568
 569     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_SPEED, &p_sys->i_sample_rate );
 570     if( result < 0 )
 571     {
 572         msg_Err( p_demux, "cannot set audio sample rate (%s)", p_sys->i_sample_rate );
 573         CloseAudioDev( p_demux );
 574     }
 575
 576     msg_Dbg( p_demux, "opened adev=`%s' %s %dHz",
 577              psz_device,
 578              (p_sys->channels > 1) ? "stereo" : "mono",
 579              p_sys->i_sample_rate );
 580
 581     p_sys->i_audio_max_frame_size = 32 * 1024;
 582 }
 583
 584 static inline void CloseAudioDev( demux_t *p_demux )
 585 {
 586     demux_sys_t *p_sys = NULL;
 587
 588     if( p_demux )
 589     {
 590         p_sys = p_demux->p_sys;
 591         if( p_sys->fd_audio >= 0 )
 592             close( p_sys->fd_audio );
 593     }
 594 }
 595
 596 /*****************************************************************************
 597  * Close:
 598  *****************************************************************************/
 599 static void Close( vlc_object_t *p_this )
 600 {
 601     demux_t     *p_demux = (demux_t*)p_this;
 602     demux_sys_t *p_sys = p_demux->p_sys;
 603     int result = 0;
 604
 605     /* Stop data transmission */
 606     result = dc1394_stop_iso_transmission( p_sys->fd_video,
 607                                            p_sys->camera.node );
 608     if( result != DC1394_SUCCESS )
 609     {
 610         msg_Err( p_demux, "couldn't stop the camera" );
 611     }
 612
 613     /* Close camera */
 614     if( p_sys->dma_capture )
 615     {
 616         dc1394_dma_unlisten( p_sys->fd_video, &p_sys->camera );
 617         dc1394_dma_release_camera( p_sys->fd_video, &p_sys->camera );
 618     }
 619     else
 620     {
 621         dc1394_release_camera( p_sys->fd_video, &p_sys->camera );
 622     }
 623
 624     if( p_sys->fd_video )
 625         dc1394_destroy_handle( p_sys->fd_video );
 626     CloseAudioDev( p_demux );
 627
 628     free( p_sys->camera_nodes );
 629     free( p_sys->audio_device );
 630
 631     free( p_sys );
 632 }
 633
 634 static void MovePixelUYVY( void *src, int spos, void *dst, int dpos )
 635 {
 636     char u,v,y;
 637     u_char  *sc;
 638     u_char  *dc;
 639
 640     sc = (u_char *)src + (spos*2);
 641     if( spos % 2 )
 642     {
 643         v = sc[0];
 644         y = sc[1];
 645         u = *(sc -2);
 646     }
 647     else
 648     {
 649         u = sc[0];
 650         y = sc[1];
 651         v = sc[2];
 652     }
 653     dc = (u_char *)dst+(dpos*2);
 654     if( dpos % 2 )
 655     {
 656         dc[0] = v;
 657         dc[1] = y;
 658     }
 659     else
 660     {
 661         dc[0] = u;
 662         dc[1] = y;
 663     }
 664 }
 665
 666 /*****************************************************************************
 667  * Demux:
 668  *****************************************************************************/
 669 static block_t *GrabVideo( demux_t *p_demux )
 670 {
 671     demux_sys_t *p_sys = p_demux->p_sys;
 672     block_t     *p_block = NULL;
 673     int result = 0;
 674
 675     if( p_sys->dma_capture )
 676     {
 677         result = dc1394_dma_single_capture( &p_sys->camera );
 678         if( result != DC1394_SUCCESS )
 679         {
 680             msg_Err( p_demux, "unable to capture a frame" );
 681             return NULL;
 682         }
 683     }
 684     else
 685     {
 686         result = dc1394_single_capture( p_sys->camera_info.handle,
 687                                         &p_sys->camera );
 688         if( result != DC1394_SUCCESS )
 689         {
 690             msg_Err( p_demux, "unable to capture a frame" );
 691             return NULL;
 692         }
 693     }
 694
 695     p_block = block_New( p_demux, p_sys->camera.frame_width *
 696                                   p_sys->camera.frame_height * 2 );
 697     if( !p_block )
 698     {
 699         msg_Err( p_demux, "cannot get block" );
 700         return NULL;
 701     }
 702
 703     if( !p_sys->camera.capture_buffer )
 704     {
 705         msg_Err (p_demux, "caputer buffer empty");
 706         block_Release( p_block );
 707         return NULL;
 708     }
 709
 710     memcpy( p_block->p_buffer, (const char *)p_sys->camera.capture_buffer,
 711             p_sys->camera.frame_width * p_sys->camera.frame_height * 2 );
 712
 713     p_block->i_pts = p_block->i_dts = mdate();
 714     if( p_sys->dma_capture )
 715         dc1394_dma_done_with_buffer( &p_sys->camera );
 716     return p_block;
 717 }
 718
 719 static block_t *GrabAudio( demux_t *p_demux )
 720 {
 721     demux_sys_t *p_sys = p_demux->p_sys;
 722     struct audio_buf_info buf_info;
 723     block_t *p_block = NULL;
 724     int i_read = 0;
 725     int i_correct = 0;
 726     int result = 0;
 727
 728     p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
 729     if( !p_block )
 730     {
 731         msg_Warn( p_demux, "cannot get buffer" );
 732         return NULL;
 733     }
 734
 735     i_read = read( p_sys->fd_audio, p_block->p_buffer,
 736                    p_sys->i_audio_max_frame_size );
 737
 738     if( i_read <= 0 )
 739         return NULL;
 740
 741     p_block->i_buffer = i_read;
 742
 743     /* Correct the date because of kernel buffering */
 744     i_correct = i_read;
 745     result = ioctl( p_sys->fd_audio, SNDCTL_DSP_GETISPACE, &buf_info );
 746     if( result == 0 )
 747         i_correct += buf_info.bytes;
 748
 749     p_block->i_pts = p_block->i_dts =
 750                         mdate() - INT64_C(1000000) * (mtime_t)i_correct /
 751                         2 / p_sys->channels / p_sys->i_sample_rate;
 752     return p_block;
 753 }
 754
 755 static int Demux( demux_t *p_demux )
 756 {
 757     demux_sys_t *p_sys = p_demux->p_sys;
 758     block_t *p_blocka = NULL;
 759     block_t *p_blockv = NULL;
 760
 761     /* Try grabbing audio frames first */
 762     if( p_sys->fd_audio > 0 )
 763         p_blocka = GrabAudio( p_demux );
 764
 765     /* Try grabbing video frame */
 766     if( (int)p_sys->fd_video > 0 )
 767         p_blockv = GrabVideo( p_demux );
 768
 769     if( !p_blocka && !p_blockv )
 770     {
 771         /* Sleep so we do not consume all the cpu, 10ms seems
 772          * like a good value (100fps)
 773          */
 774         msleep( 10000 );
 775         return 1;
 776     }
 777
 778     if( p_blocka )
 779     {
 780         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blocka->i_pts );
 781         es_out_Send( p_demux->out, p_sys->p_es_audio, p_blocka );
 782     }
 783
 784     if( p_blockv )
 785     {
 786         es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_blockv->i_pts );
 787         es_out_Send( p_demux->out, p_sys->p_es_video, p_blockv );
 788     }
 789     return 1;
 790 }
 791
 792 /*****************************************************************************
 793  * Control:
 794  *****************************************************************************/
 795 static int Control( demux_t *p_demux, int i_query, va_list args )
 796 {
 797     bool *pb;
 798     int64_t    *pi64;
 799
 800     switch( i_query )
 801     {
 802         /* Special for access_demux */
 803         case DEMUX_CAN_PAUSE:
 804         case DEMUX_CAN_SEEK:
 805         case DEMUX_SET_PAUSE_STATE:
 806         case DEMUX_CAN_CONTROL_PACE:
 807             pb = (bool*)va_arg( args, bool * );
 808             *pb = false;
 809             return VLC_SUCCESS;
 810
 811         case DEMUX_GET_PTS_DELAY:
 812             pi64 = (int64_t*)va_arg( args, int64_t * );
 813             *pi64 = (int64_t)DEFAULT_PTS_DELAY;
 814             return VLC_SUCCESS;
 815
 816         case DEMUX_GET_TIME:
 817             pi64 = (int64_t*)va_arg( args, int64_t * );
 818             *pi64 = mdate();
 819             return VLC_SUCCESS;
 820
 821         /* TODO implement others */
 822         default:
 823             return VLC_EGENERIC;
 824     }
 825     return VLC_EGENERIC;
 826 }
 827
 828 static int process_options( demux_t *p_demux )
 829 {
 830     demux_sys_t *p_sys = p_demux->p_sys;
 831     char *psz_dup;
 832     char *psz_parser;
 833     char *token = NULL;
 834     char *state = NULL;
 835     float rate_f;
 836
 837     if( strncmp(p_demux->psz_access, "dc1394", 6) != 0 )
 838         return VLC_EGENERIC;
 839
 840     psz_dup = strdup( p_demux->psz_path );
 841     psz_parser = psz_dup;
 842     for( token = strtok_r( psz_parser,":",&state); token;
 843          token = strtok_r( NULL, ":", &state ) )
 844     {
 845         if( strncmp( token, "size=", strlen("size=") ) == 0 )
 846         {
 847             token += strlen("size=");
 848             if( strncmp( token, "160x120", 7 ) == 0 )
 849             {
 850                 /* TODO - UYV444 chroma converter is needed ...
 851                     * video size of 160x120 is temporarily disabled
 852                     */
 853                 msg_Err( p_demux,
 854                     "video size of 160x120 is actually disabled for lack of chroma "
 855                     "support. It will relased ASAP, until then try an higher size "
 856                     "(320x240 and 640x480 are fully supported)" );
 857                 free( psz_dup );
 858                 return VLC_EGENERIC;
 859 #if 0
 860                 p_sys->frame_size = MODE_160x120_YUV444;
 861                 p_sys->width = 160;
 862                 p_sys->height = 120;
 863 #endif
 864             }
 865             else if( strncmp( token, "320x240", 7 ) == 0 )
 866             {
 867                 p_sys->frame_size = MODE_320x240_YUV422;
 868                 p_sys->width = 320;
 869                 p_sys->height = 240;
 870             }
 871             else if( strncmp( token, "640x480", 7 ) == 0 )
 872             {
 873                 p_sys->frame_size = MODE_640x480_YUV422;
 874                 p_sys->width = 640;
 875                 p_sys->height = 480;
 876             }
 877             else
 878             {
 879                 msg_Err( p_demux,
 880                     "This program currently suppots frame sizes of"
 881                     " 160x120, 320x240, and 640x480. "
 882                     "Please specify one of them. You have specified %s.",
 883                     token );
 884                 free( psz_dup );
 885                 return VLC_EGENERIC;
 886             }
 887             msg_Dbg( p_demux, "Requested video size : %s",token );
 888         }
 889         else if( strncmp( token, "fps=", strlen( "fps=" ) ) == 0 )
 890         {
 891             token += strlen("fps=");
 892             sscanf( token, "%g", &rate_f );
 893             if( rate_f == 1.875 )
 894                 p_sys->frame_rate = FRAMERATE_1_875;
 895             else if( rate_f == 3.75 )
 896                 p_sys->frame_rate = FRAMERATE_3_75;
 897             else if( rate_f == 7.5 )
 898                 p_sys->frame_rate = FRAMERATE_7_5;
 899             else if( rate_f == 15 )
 900                 p_sys->frame_rate = FRAMERATE_15;
 901             else if( rate_f == 30 )
 902                 p_sys->frame_rate = FRAMERATE_30;
 903             else if( rate_f == 60 )
 904                 p_sys->frame_rate = FRAMERATE_60;
 905             else
 906             {
 907                 msg_Err( p_demux ,
 908                     "This program supports framerates of"
 909                     " 1.875, 3.75, 7.5, 15, 30, 60. "
 910                     "Please specify one of them. You have specified %s.",
 911                     token);
 912                 free( psz_dup );
 913                 return VLC_EGENERIC;
 914             }
 915             msg_Dbg( p_demux, "Requested frame rate : %s",token );
 916         }
 917         else if( strncmp( token, "brightness=", strlen( "brightness=" ) ) == 0 )
 918         {
 919             int nr = 0;
 920             token += strlen("brightness=");
 921             nr = sscanf( token, "%u", &p_sys->brightness);
 922             if( nr != 1 )
 923             {
 924                 msg_Err( p_demux, "Bad brightness value '%s', "
 925                                   "must be an unsigned integer.",
 926                                   token );
 927                 free( psz_dup );
 928                 return VLC_EGENERIC;
 929             }
 930         }
 931 #if 0
 932         else if( strncmp( token, "controller=", strlen( "controller=" ) ) == 0 )
 933         {
 934             int nr = 0;
 935             token += strlen("controller=");
 936             nr = sscanf( token, "%u", &p_sys->controller );
 937             if( nr != 1)
 938             {
 939                 msg_Err(p_demux, "Bad controller value '%s', "
 940                                  "must be an unsigned integer.",
 941                                  token );
 942                 return VLC_EGENERIC;
 943             }
 944         }
 945 #endif
 946         else if( strncmp( token, "camera=", strlen( "camera=" ) ) == 0 )
 947         {
 948             int nr = 0;
 949             token += strlen("camera=");
 950             nr = sscanf(token,"%u",&p_sys->selected_camera);
 951             if( nr != 1)
 952             {
 953                 msg_Err( p_demux, "Bad camera number '%s', "
 954                                   "must be an unsigned integer.",
 955                                   token );
 956                 free( psz_dup );
 957                 return VLC_EGENERIC;
 958             }
 959         }
 960         else if( strncmp( token, "capture=", strlen( "capture=" ) ) == 0)
 961         {
 962             token += strlen("capture=");
 963             if( strncmp(token, "raw1394",7) == 0 )
 964             {
 965                 msg_Dbg( p_demux, "DMA capture disabled!" );
 966                 p_sys->dma_capture = DMA_OFF;
 967             }
 968             else if( strncmp(token,"video1394",9) == 0 )
 969             {
 970                 msg_Dbg( p_demux, "DMA capture enabled!" );
 971                 p_sys->dma_capture = DMA_ON;
 972             }
 973             else
 974             {
 975                 msg_Err(p_demux, "Bad capture method value '%s', "
 976                                  "it can be 'raw1394' or 'video1394'.",
 977                                 token );
 978                 free( psz_dup );
 979                 return VLC_EGENERIC;
 980             }
 981         }
 982         else if( strncmp( token, "adev=", strlen( "adev=" ) ) == 0 )
 983         {
 984             token += strlen("adev=");
 985             p_sys->audio_device = strdup(token);
 986             msg_Dbg( p_demux, "Using audio device '%s'.", token );
 987         }
 988         else if( strncmp( token, "samplerate=", strlen( "samplerate=" ) ) == 0 )
 989         {
 990             token += strlen("samplerate=");
 991             sscanf( token, "%d", &p_sys->i_sample_rate );
 992         }
 993         else if( strncmp( token, "channels=", strlen("channels=" ) ) == 0 )
 994         {
 995             token += strlen("channels=");
 996             sscanf( token, "%d", &p_sys->channels );
 997         }
 998         else if( strncmp( token, "focus=", strlen("focus=" ) ) == 0)
 999         {
1000             token += strlen("focus=");
1001             sscanf( token, "%u", &p_sys->focus );
1002         }
1003         else if( strncmp( token, "uid=", strlen("uid=") ) == 0)
1004         {
1005             token += strlen("uid=");
1006             sscanf( token, "0x%llx", &p_sys->selected_uid );
1007         }
1008     }
1009     free( psz_dup );
1010     return VLC_SUCCESS;
1011 }
1012