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

   1 /*****************************************************************************
   2  * pvr.c
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Eric Petit <titer@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program 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
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <vlc/vlc.h>
  28 #include <vlc/input.h>
  29
  30 #include <stdlib.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #include <fcntl.h>
  34 #include <unistd.h>
  35 #include <errno.h>
  36 #include <linux/types.h>
  37 #include <sys/ioctl.h>
  38 #include "videodev2.h"
  39
  40 /*****************************************************************************
  41  * Module descriptor
  42  *****************************************************************************/
  43 static int  Open ( vlc_object_t * );
  44 static void Close( vlc_object_t * );
  45
  46 #define DEVICE_TEXT N_( "Device" )
  47 #define DEVICE_LONGTEXT N_( "PVR video device" )
  48
  49 #define NORM_TEXT N_( "Norm" )
  50 #define NORM_LONGTEXT N_( "Defines the norm of the stream (Automatic, SECAM, PAL, or NTSC)" )
  51 static int i_norm_list[] = { V4L2_STD_UNKNOWN, V4L2_STD_SECAM, V4L2_STD_PAL,
  52                              V4L2_STD_NTSC };
  53 static char *psz_norm_list_text[] = { N_("Automatic"), N_("SECAM"),
  54                                       N_("PAL"),  N_("NTSC") };
  55
  56 #define WIDTH_TEXT N_( "Width" )
  57 #define WIDTH_LONGTEXT N_( "Width of the stream to capture (-1 for " \
  58                            "autodetect)" )
  59 #define HEIGHT_TEXT N_( "Height" )
  60 #define HEIGHT_LONGTEXT N_( "Height of the stream to capture (-1 for " \
  61                            "autodetect)" )
  62 #define FREQUENCY_TEXT N_( "Frequency" )
  63 #define FREQUENCY_LONGTEXT N_( "Frequency to capture (in kHz), if applicable" )
  64 #define FRAMERATE_TEXT N_( "Framerate" )
  65 #define FRAMERATE_LONGTEXT N_( "Framerate to capture, if applicable (-1 for " \
  66                                "auto)" )
  67 #define KEYINT_TEXT N_( "Key interval" )
  68 #define KEYINT_LONGTEXT N_( "Interval between keyframes (-1 for " \
  69                                 " auto)" )
  70 #define BFRAMES_TEXT N_( "B Frames" )
  71 #define BFRAMES_LONGTEXT N_("If this option is set, B-Frames will be used. " \
  72                             "Use this option to set the number of B-Frames.")
  73 #define BITRATE_TEXT N_( "Bitrate" )
  74 #define BITRATE_LONGTEXT N_( "Bitrate to use (-1 for default)" )
  75 #define BITRATE_PEAK_TEXT N_( "Bitrate peak" )
  76 #define BITRATE_PEAK_LONGTEXT N_( "Peak bitrate in VBR mode" )
  77 #define BITRATE_MODE_TEXT N_( "Bitrate mode (vbr or cbr)" )
  78 #define BITRATE_MODE_LONGTEXT N_( "Bitrate mode to use" )
  79 #define BITMASK_TEXT N_( "Audio bitmask" )
  80 #define BITMASK_LONGTEXT N_("This option allows setting of bitmask that will get used by the audio part of the card." )
  81 #define CHAN_TEXT N_( "Channel" )
  82 #define CHAN_LONGTEXT N_( "Channel of the card to use (Usually, 0 = tuner, " \
  83                           "1 = composite, 2 = svideo)" )
  84
  85 static int i_bitrates[] = { 0, 1 };
  86 static char *psz_bitrates_list_text[] = { N_("vbr"), N_("cbr") };
  87
  88 vlc_module_begin();
  89     set_shortname( _("PVR") );
  90     set_description( _("MPEG Encoding cards input (with ivtv drivers)") );
  91     set_capability( "access2", 0 );
  92     add_shortcut( "pvr" );
  93
  94     add_string( "pvr-device", "/dev/video0", NULL, DEVICE_TEXT,
  95                             DEVICE_LONGTEXT, VLC_FALSE );
  96
  97     add_integer( "pvr-norm", V4L2_STD_UNKNOWN , NULL, NORM_TEXT,
  98                              NORM_LONGTEXT, VLC_FALSE );
  99        change_integer_list( i_norm_list, psz_norm_list_text, 0 );
 100
 101     add_integer( "pvr-width", -1, NULL, WIDTH_TEXT, WIDTH_LONGTEXT, VLC_TRUE );
 102     add_integer( "pvr-height", -1, NULL, WIDTH_TEXT, WIDTH_LONGTEXT,
 103                                          VLC_TRUE );
 104     add_integer( "pvr-frequency", -1, NULL, FREQUENCY_TEXT, FREQUENCY_LONGTEXT,
 105                                          VLC_FALSE );
 106     add_integer( "pvr-framerate", -1, NULL, FRAMERATE_TEXT, FRAMERATE_LONGTEXT,
 107                                          VLC_TRUE );
 108     add_integer( "pvr-keyint", -1, NULL, KEYINT_TEXT, KEYINT_LONGTEXT,
 109                                          VLC_TRUE );
 110     add_integer( "pvr-bframes", -1, NULL, FRAMERATE_TEXT, FRAMERATE_LONGTEXT,
 111                                          VLC_TRUE );
 112     add_integer( "pvr-bitrate", -1, NULL, BITRATE_TEXT, BITRATE_LONGTEXT,
 113                                          VLC_FALSE );
 114     add_integer( "pvr-bitrate-peak", -1, NULL, BITRATE_PEAK_TEXT,
 115                                          BITRATE_PEAK_LONGTEXT, VLC_TRUE );
 116     add_integer( "pvr-bitrate-mode", -1, NULL, BITRATE_MODE_TEXT,
 117                                          BITRATE_MODE_LONGTEXT, VLC_TRUE );
 118         change_integer_list( i_bitrates, psz_bitrates_list_text, 0 );
 119     add_integer( "pvr-audio-bitmask", -1, NULL, BITMASK_TEXT,
 120                                          BITMASK_LONGTEXT, VLC_TRUE );
 121     add_integer( "pvr-channel", -1, NULL, CHAN_TEXT,
 122                                           CHAN_LONGTEXT, VLC_TRUE );
 123
 124     set_callbacks( Open, Close );
 125 vlc_module_end();
 126
 127 /*****************************************************************************
 128  * Prototypes
 129  *****************************************************************************/
 130 static int Read   ( access_t *, uint8_t *, int );
 131 static int Control( access_t *, int, va_list );
 132
 133 /* ivtv specific ioctls */
 134 #define IVTV_IOC_G_CODEC    0xFFEE7703
 135 #define IVTV_IOC_S_CODEC    0xFFEE7704
 136
 137 /* for use with IVTV_IOC_G_CODEC and IVTV_IOC_S_CODEC */
 138
 139 struct ivtv_ioctl_codec {
 140         uint32_t aspect;
 141         uint32_t audio_bitmask;
 142         uint32_t bframes;
 143         uint32_t bitrate_mode;
 144         uint32_t bitrate;
 145         uint32_t bitrate_peak;
 146         uint32_t dnr_mode;
 147         uint32_t dnr_spatial;
 148         uint32_t dnr_temporal;
 149         uint32_t dnr_type;
 150         uint32_t framerate;
 151         uint32_t framespergop;
 152         uint32_t gop_closure;
 153         uint32_t pulldown;
 154         uint32_t stream_type;
 155 };
 156
 157 struct access_sys_t
 158 {
 159     /* file descriptor */
 160     int i_fd;
 161
 162     /* options */
 163     int i_standard;
 164     int i_width;
 165     int i_height;
 166     int i_frequency;
 167     int i_framerate;
 168     int i_keyint;
 169     int i_bframes;
 170     int i_bitrate;
 171     int i_bitrate_peak;
 172     int i_bitrate_mode;
 173     int i_audio_bitmask;
 174     int i_input;
 175 };
 176
 177 /*****************************************************************************
 178  * Open: open the device
 179  *****************************************************************************/
 180 static int Open( vlc_object_t * p_this )
 181 {
 182     access_t *p_access = (access_t*) p_this;
 183     access_sys_t * p_sys;
 184     char * psz_tofree, * psz_parser, * psz_device;
 185     vlc_value_t val;
 186
 187     struct v4l2_format vfmt;
 188     struct v4l2_frequency vf;
 189     struct ivtv_ioctl_codec codec;
 190
 191     //psz_device = calloc( strlen( "/dev/videox" ) + 1, 1 );
 192
 193     p_access->pf_read = Read;
 194     p_access->pf_block = NULL;
 195     p_access->pf_seek = NULL;
 196     p_access->pf_control = Control;
 197     p_access->info.i_update = 0;
 198     p_access->info.i_size = 0;
 199     p_access->info.i_pos = 0;
 200     p_access->info.b_eof = VLC_FALSE;
 201     p_access->info.i_title = 0;
 202     p_access->info.i_seekpoint = 0;
 203
 204     /* create private access data */
 205     p_sys = calloc( sizeof( access_sys_t ), 1 );
 206     p_access->p_sys = p_sys;
 207
 208     /* defaults values */
 209     var_Create( p_access, "pvr-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 210
 211     var_Create( p_access, "pvr-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 212     var_Get( p_access, "pvr-device" , &val);
 213     psz_device = val.psz_string;
 214
 215     var_Create( p_access, "pvr-norm", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 216     var_Get( p_access, "pvr-norm" , &val);
 217     p_sys->i_standard = val.i_int;
 218
 219     var_Create( p_access, "pvr-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 220     var_Get( p_access, "pvr-width" , &val);
 221     p_sys->i_width = val.i_int;
 222
 223     var_Create( p_access, "pvr-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 224     var_Get( p_access, "pvr-height" , &val);
 225     p_sys->i_height = val.i_int;
 226
 227     var_Create( p_access, "pvr-frequency", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 228     var_Get( p_access, "pvr-frequency" , &val);
 229     p_sys->i_frequency = val.i_int;
 230
 231     var_Create( p_access, "pvr-framerate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 232     var_Get( p_access, "pvr-framerate" , &val);
 233     p_sys->i_framerate = val.i_int;
 234
 235     var_Create( p_access, "pvr-keyint", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 236     var_Get( p_access, "pvr-keyint" , &val);
 237     p_sys->i_keyint = val.i_int;
 238
 239     var_Create( p_access, "pvr-bframes", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 240     var_Get( p_access, "pvr-bframes" , &val);
 241     p_sys->i_bframes = val.b_bool;
 242
 243     var_Create( p_access, "pvr-bitrate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 244     var_Get( p_access, "pvr-bitrate" , &val);
 245     p_sys->i_bitrate = val.i_int;
 246
 247     var_Create( p_access, "pvr-bitrate-peak", VLC_VAR_INTEGER |
 248                                               VLC_VAR_DOINHERIT );
 249     var_Get( p_access, "pvr-bitrate-peak" , &val);
 250     p_sys->i_bitrate_peak = val.i_int;
 251
 252     var_Create( p_access, "pvr-bitrate-mode", VLC_VAR_INTEGER |
 253                                               VLC_VAR_DOINHERIT );
 254     var_Get( p_access, "pvr-bitrate-mode" , &val);
 255     p_sys->i_bitrate_mode = val.i_int;
 256
 257     var_Create( p_access, "pvr-audio-bitmask", VLC_VAR_INTEGER |
 258                                               VLC_VAR_DOINHERIT );
 259     var_Get( p_access, "pvr-audio-bitmask" , &val);
 260     p_sys->i_audio_bitmask = val.i_int;
 261     var_Create( p_access, "pvr-channel", VLC_VAR_INTEGER |
 262                                               VLC_VAR_DOINHERIT );
 263     var_Get( p_access, "pvr-channel" , &val);
 264     p_sys->i_input = val.i_int;
 265
 266     /* parse command line options */
 267     psz_tofree = strdup( p_access->psz_path );
 268     psz_parser = psz_tofree;
 269
 270     if( *psz_parser )
 271     {
 272         for( ;; )
 273         {
 274             if ( !strncmp( psz_parser, "norm=", strlen( "norm=" ) ) )
 275             {
 276                 char *psz_parser_init;
 277                 psz_parser += strlen( "norm=" );
 278                 psz_parser_init = psz_parser;
 279                 while ( *psz_parser != ':' && *psz_parser != ','
 280                                                     && *psz_parser != '\0' )
 281                 {
 282                     psz_parser++;
 283                 }
 284
 285                 if ( !strncmp( psz_parser_init, "secam" ,
 286                                psz_parser - psz_parser_init ) )
 287                 {
 288                     p_sys->i_standard = V4L2_STD_SECAM;
 289                 }
 290                 else if ( !strncmp( psz_parser_init, "pal" ,
 291                                     psz_parser - psz_parser_init ) )
 292                 {
 293                     p_sys->i_standard = V4L2_STD_PAL;
 294                 }
 295                 else if ( !strncmp( psz_parser_init, "ntsc" ,
 296                                     psz_parser - psz_parser_init ) )
 297                 {
 298                     p_sys->i_standard = V4L2_STD_NTSC;
 299                 }
 300                 else
 301                 {
 302                     p_sys->i_standard = strtol( psz_parser_init ,
 303                                                 &psz_parser, 0 );
 304                 }
 305             }
 306             else if( !strncmp( psz_parser, "channel=",
 307                                strlen( "channel=" ) ) )
 308             {
 309                 p_sys->i_input =
 310                   strtol( psz_parser + strlen( "channel=" ),
 311                             &psz_parser, 0 );
 312             }
 313             else if( !strncmp( psz_parser, "device=", strlen( "device=" ) ) )
 314             {
 315                 psz_device = calloc( strlen( "/dev/videox" ) + 1, 1 );
 316                 sprintf( psz_device, "/dev/video%ld",
 317                             strtol( psz_parser + strlen( "device=" ),
 318                             &psz_parser, 0 ) );
 319             }
 320             else if( !strncmp( psz_parser, "frequency=",
 321                                strlen( "frequency=" ) ) )
 322             {
 323                 p_sys->i_frequency =
 324                   strtol( psz_parser + strlen( "frequency=" ),
 325                             &psz_parser, 0 );
 326             }
 327             else if( !strncmp( psz_parser, "framerate=",
 328                                strlen( "framerate=" ) ) )
 329             {
 330                 p_sys->i_framerate =
 331                     strtol( psz_parser + strlen( "framerate=" ),
 332                             &psz_parser, 0 );
 333             }
 334             else if( !strncmp( psz_parser, "keyint=",
 335                                strlen( "keyint=" ) ) )
 336             {
 337                 p_sys->i_keyint =
 338                     strtol( psz_parser + strlen( "keyint=" ),
 339                             &psz_parser, 0 );
 340             }
 341             else if( !strncmp( psz_parser, "bframes=",
 342                                strlen( "bframes=" ) ) )
 343             {
 344                 p_sys->i_bframes =
 345                     strtol( psz_parser + strlen( "bframes=" ),
 346                             &psz_parser, 0 );
 347             }
 348
 349             else if( !strncmp( psz_parser, "width=",
 350                                strlen( "width=" ) ) )
 351             {
 352                 p_sys->i_width =
 353                     strtol( psz_parser + strlen( "width=" ),
 354                             &psz_parser, 0 );
 355             }
 356             else if( !strncmp( psz_parser, "height=",
 357                                strlen( "height=" ) ) )
 358             {
 359                 p_sys->i_height =
 360                     strtol( psz_parser + strlen( "height=" ),
 361                             &psz_parser, 0 );
 362             }
 363             else if( !strncmp( psz_parser, "audio=",
 364                                strlen( "audio=" ) ) )
 365             {
 366                 p_sys->i_audio_bitmask =
 367                     strtol( psz_parser + strlen( "audio=" ),
 368                             &psz_parser, 0 );
 369             }
 370             else if( !strncmp( psz_parser, "bitrate=",
 371                                strlen( "bitrate=" ) ) )
 372             {
 373                 p_sys->i_bitrate =
 374                     strtol( psz_parser + strlen( "bitrate=" ),
 375                             &psz_parser, 0 );
 376             }
 377             else if( !strncmp( psz_parser, "maxbitrate=",
 378                                strlen( "maxbitrate=" ) ) )
 379             {
 380                 p_sys->i_bitrate_peak =
 381                     strtol( psz_parser + strlen( "maxbitrate=" ),
 382                             &psz_parser, 0 );
 383             }
 384             else if( !strncmp( psz_parser, "bitratemode=",
 385                                strlen( "bitratemode=" ) ) )
 386             {
 387                 char *psz_parser_init;
 388                 psz_parser += strlen( "bitratemode=" );
 389                 psz_parser_init = psz_parser;
 390                 while ( *psz_parser != ':' && *psz_parser != ','
 391                          && *psz_parser != '\0' )
 392                 {
 393                     psz_parser++;
 394                 }
 395
 396                 if ( !strncmp( psz_parser_init, "vbr" ,
 397                                psz_parser - psz_parser_init ) )
 398                 {
 399                      p_sys->i_bitrate_mode = 0;
 400                 }
 401                 else if ( !strncmp( psz_parser_init, "cbr" ,
 402                                     psz_parser - psz_parser_init ) )
 403                 {
 404                     p_sys->i_bitrate_mode = 1;
 405                 }
 406             }
 407             else if( !strncmp( psz_parser, "size=",
 408                                strlen( "size=" ) ) )
 409             {
 410                 p_sys->i_width =
 411                     strtol( psz_parser + strlen( "size=" ),
 412                             &psz_parser, 0 );
 413                 p_sys->i_height =
 414                     strtol( psz_parser + 1 ,
 415                             &psz_parser, 0 );
 416             }
 417             else
 418             {
 419                 char *psz_parser_init;
 420                 psz_parser_init = psz_parser;
 421                 while ( *psz_parser != ':' && *psz_parser != ',' && *psz_parser != '\0' )
 422                 {
 423                     psz_parser++;
 424                 }
 425                 psz_device = calloc( psz_parser - psz_parser_init + 1, 1 );
 426                 strncpy( psz_device, psz_parser_init,
 427                          psz_parser - psz_parser_init );
 428             }
 429             if( *psz_parser )
 430                 psz_parser++;
 431             else
 432                 break;
 433         }
 434     }
 435
 436     //give a default value to psz_device if none has bee specified
 437
 438     if (!psz_device)
 439     {
 440         psz_device = calloc( strlen( "/dev/videox" ) + 1, 1 );
 441         strcpy( psz_device, "/dev/video0" );
 442     }
 443
 444     free( psz_tofree );
 445
 446     /* open the device */
 447     if( ( p_sys->i_fd = open( psz_device, O_RDWR ) ) < 0 )
 448     {
 449         msg_Err( p_access, "cannot open device (%s)", strerror( errno ) );
 450         return VLC_EGENERIC;
 451     }
 452     else
 453     {
 454         msg_Dbg( p_access, "using video device: %s",psz_device);
 455     }
 456
 457     free( psz_device );
 458
 459     /* set the input */
 460     if ( p_sys->i_input != -1 )
 461     {
 462         if ( ioctl( p_sys->i_fd, VIDIOC_S_INPUT, &p_sys->i_input ) < 0 )
 463         {
 464             msg_Warn( p_access, "VIDIOC_S_INPUT failed" );
 465         }
 466         else
 467         {
 468             msg_Dbg( p_access, "input set to:%d", p_sys->i_input);
 469         }
 470     }
 471
 472     /* set the video standard */
 473     if ( p_sys->i_standard != V4L2_STD_UNKNOWN )
 474     {
 475         if ( ioctl( p_sys->i_fd, VIDIOC_S_STD, &p_sys->i_standard ) < 0 )
 476         {
 477             msg_Warn( p_access, "VIDIOC_S_STD failed" );
 478         }
 479         else
 480         {
 481             msg_Dbg( p_access, "video standard set to:%x", p_sys->i_standard);
 482         }
 483     }
 484
 485     /* set the picture size */
 486     if ( p_sys->i_width != -1 || p_sys->i_height != -1 )
 487     {
 488         if ( ioctl( p_sys->i_fd, VIDIOC_G_FMT, &vfmt ) < 0 )
 489         {
 490             msg_Warn( p_access, "VIDIOC_G_FMT failed" );
 491         }
 492         else
 493         {
 494             if ( p_sys->i_width != -1 )
 495             {
 496                 vfmt.fmt.pix.width = p_sys->i_width;
 497             }
 498
 499             if ( p_sys->i_height != -1 )
 500             {
 501                 vfmt.fmt.pix.height = p_sys->i_height;
 502             }
 503
 504             if ( ioctl( p_sys->i_fd, VIDIOC_S_FMT, &vfmt ) < 0 )
 505             {
 506                 msg_Warn( p_access, "VIDIOC_S_FMT failed" );
 507             }
 508             else
 509             {
 510                 msg_Dbg( p_access, "picture size set to:%dx%d",
 511                          vfmt.fmt.pix.width, vfmt.fmt.pix.height );
 512             }
 513         }
 514     }
 515
 516     /* set the frequency */
 517     if ( p_sys->i_frequency != -1 )
 518     {
 519         vf.tuner = 0; /* TODO: let the user choose the tuner */
 520         if ( ioctl( p_sys->i_fd, VIDIOC_G_FREQUENCY, &vf ) < 0 )
 521         {
 522             msg_Warn( p_access, "VIDIOC_G_FREQUENCY failed (%s)",
 523                       strerror( errno ) );
 524         }
 525         else
 526         {
 527             vf.frequency = p_sys->i_frequency * 16 / 1000;
 528             if( ioctl( p_sys->i_fd, VIDIOC_S_FREQUENCY, &vf ) < 0 )
 529             {
 530                 msg_Warn( p_access, "VIDIOC_S_FREQUENCY failed (%s)",
 531                           strerror( errno ) );
 532             }
 533             else
 534             {
 535                 msg_Dbg( p_access, "Tuner frequency set to:%d",
 536                          p_sys->i_frequency);
 537             }
 538         }
 539     }
 540
 541     /* codec parameters */
 542     if ( p_sys->i_framerate != -1
 543             || p_sys->i_bitrate_mode != -1
 544             || p_sys->i_bitrate_peak != -1
 545             || p_sys->i_keyint != -1
 546             || p_sys->i_bframes != -1
 547             || p_sys->i_bitrate != -1
 548             || p_sys->i_audio_bitmask != -1 )
 549     {
 550         if ( ioctl( p_sys->i_fd, IVTV_IOC_G_CODEC, &codec ) < 0 )
 551         {
 552             msg_Warn( p_access, "IVTV_IOC_G_CODEC failed" );
 553         }
 554         else
 555         {
 556             if ( p_sys->i_framerate != -1 )
 557             {
 558                 switch ( p_sys->i_framerate )
 559                 {
 560                     case 30:
 561                         codec.framerate = 0;
 562                         break;
 563
 564                     case 25:
 565                         codec.framerate = 1;
 566                         break;
 567
 568                     default:
 569                         msg_Warn( p_access, "invalid framerate, reverting to 25" );
 570                         codec.framerate = 1;
 571                         break;
 572                 }
 573             }
 574
 575             if ( p_sys->i_bitrate != -1 )
 576             {
 577                 codec.bitrate = p_sys->i_bitrate;
 578             }
 579
 580             if ( p_sys->i_bitrate_peak != -1 )
 581             {
 582                 codec.bitrate_peak = p_sys->i_bitrate_peak;
 583             }
 584
 585             if ( p_sys->i_bitrate_mode != -1 )
 586             {
 587                 codec.bitrate_mode = p_sys->i_bitrate_mode;
 588             }
 589
 590             if ( p_sys->i_audio_bitmask != -1 )
 591             {
 592                 codec.audio_bitmask = p_sys->i_audio_bitmask;
 593             }
 594             if ( p_sys->i_keyint != -1 )
 595             {
 596                 codec.framespergop = p_sys->i_keyint;
 597             }
 598
 599             if ( p_sys->i_bframes != -1 )
 600             {
 601                 codec.bframes = p_sys->i_bframes;
 602             }
 603             if( ioctl( p_sys->i_fd, IVTV_IOC_S_CODEC, &codec ) < 0 )
 604             {
 605                 msg_Warn( p_access, "IVTV_IOC_S_CODEC failed" );
 606             }
 607             else
 608             {
 609                 msg_Dbg( p_access, "Setting codec parameters to:  framerate: %d, bitrate: %d/%d/%d",
 610                codec.framerate, codec.bitrate, codec.bitrate_peak, codec.bitrate_mode );
 611             }
 612         }
 613     }
 614
 615     /* do a quick read */
 616 #if 0
 617     if ( p_sys->i_fd )
 618     {
 619         if ( read( p_sys->i_fd, psz_tmp, 1 ) )
 620         {
 621             msg_Dbg(p_input, "Could read byte from device");
 622         }
 623         else
 624         {
 625             msg_Warn(p_input, "Could not read byte from device");
 626         }
 627     }
 628 #endif
 629
 630     return VLC_SUCCESS;
 631 }
 632
 633 /*****************************************************************************
 634  * Close: close the device
 635  *****************************************************************************/
 636 static void Close( vlc_object_t * p_this )
 637 {
 638     access_t *p_access = (access_t*) p_this;
 639     access_sys_t * p_sys = p_access->p_sys;
 640
 641     close( p_sys->i_fd );
 642     free( p_sys );
 643 }
 644
 645 /*****************************************************************************
 646  * Read
 647  *****************************************************************************/
 648 static int Read( access_t * p_access, uint8_t * p_buffer, int i_len )
 649 {
 650     access_sys_t * p_sys = p_access->p_sys;
 651
 652     int i_ret;
 653
 654     struct timeval timeout;
 655     fd_set fds;
 656
 657     FD_ZERO( &fds );
 658     FD_SET( p_sys->i_fd, &fds );
 659     timeout.tv_sec = 0;
 660     timeout.tv_usec = 500000;
 661
 662     if( p_access->info.b_eof )
 663         return 0;
 664
 665     while( !( i_ret = select( p_sys->i_fd + 1, &fds, NULL, NULL, &timeout) ) )
 666     {
 667         FD_ZERO( &fds );
 668         FD_SET( p_sys->i_fd, &fds );
 669         timeout.tv_sec = 0;
 670         timeout.tv_usec = 500000;
 671
 672         if( p_access->b_die )
 673             return 0;
 674     }
 675
 676     if( i_ret < 0 )
 677     {
 678         msg_Err( p_access, "select error (%s)", strerror( errno ) );
 679         return -1;
 680     }
 681
 682     i_ret = read( p_sys->i_fd, p_buffer, i_len );
 683     if( i_ret == 0 )
 684     {
 685         p_access->info.b_eof = VLC_TRUE;
 686     }
 687     else if( i_ret > 0 )
 688     {
 689         p_access->info.i_pos += i_ret;
 690     }
 691
 692     return i_ret;
 693 }
 694
 695 /*****************************************************************************
 696  * Control
 697  *****************************************************************************/
 698 static int Control( access_t *p_access, int i_query, va_list args )
 699 {
 700     access_sys_t *p_sys = p_access->p_sys;
 701     vlc_bool_t   *pb_bool;
 702     int          *pi_int;
 703     int64_t      *pi_64;
 704
 705     switch( i_query )
 706     {
 707         /* */
 708         case ACCESS_CAN_SEEK:
 709         case ACCESS_CAN_FASTSEEK:
 710             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
 711             *pb_bool = VLC_FALSE;
 712             break;
 713         case ACCESS_CAN_PAUSE:
 714             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
 715             *pb_bool = VLC_FALSE;
 716             break;
 717         case ACCESS_CAN_CONTROL_PACE:
 718             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
 719             *pb_bool = VLC_FALSE;
 720             break;
 721
 722         /* */
 723         case ACCESS_GET_MTU:
 724             pi_int = (int*)va_arg( args, int * );
 725             *pi_int = 0;
 726             break;
 727
 728         case ACCESS_GET_PTS_DELAY:
 729             pi_64 = (int64_t*)va_arg( args, int64_t * );
 730             *pi_64 = (int64_t)var_GetInteger( p_access, "pvr-caching" ) * I64C(1000);
 731             break;
 732
 733         /* */
 734         case ACCESS_SET_PAUSE_STATE:
 735             /* Nothing to do */
 736             break;
 737
 738         case ACCESS_GET_TITLE_INFO:
 739         case ACCESS_SET_TITLE:
 740         case ACCESS_SET_SEEKPOINT:
 741         case ACCESS_SET_PRIVATE_ID_STATE:
 742             return VLC_EGENERIC;
 743
 744         default:
 745             msg_Warn( p_access, "unimplemented query in control" );
 746             return VLC_EGENERIC;
 747
 748     }
 749     return VLC_SUCCESS;
 750 }
 751