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_("NSTC") };
  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
 186     vlc_value_t val;
 187
 188     struct v4l2_format vfmt;
 189     struct v4l2_frequency vf;
 190     struct ivtv_ioctl_codec codec;
 191
 192     //psz_device = calloc( strlen( "/dev/videox" ) + 1, 1 );
 193
 194     p_access->pf_read = Read;
 195     p_access->pf_block = NULL;
 196     p_access->pf_seek = NULL;
 197     p_access->pf_control = Control;
 198     p_access->info.i_update = 0;
 199     p_access->info.i_size = 0;
 200     p_access->info.i_pos = 0;
 201     p_access->info.b_eof = VLC_FALSE;
 202     p_access->info.i_title = 0;
 203     p_access->info.i_seekpoint = 0;
 204
 205     /* create private access data */
 206     p_sys = calloc( sizeof( access_sys_t ), 1 );
 207     p_access->p_sys = p_sys;
 208
 209     /* defaults values */
 210     var_Create( p_access, "pvr-device", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 211     var_Get( p_access, "pvr-device" , &val);
 212     psz_device = val.psz_string;
 213
 214     var_Create( p_access, "pvr-norm", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 215     var_Get( p_access, "pvr-norm" , &val);
 216     p_sys->i_standard = val.i_int;
 217
 218     var_Create( p_access, "pvr-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 219     var_Get( p_access, "pvr-width" , &val);
 220     p_sys->i_width = val.i_int;
 221
 222     var_Create( p_access, "pvr-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 223     var_Get( p_access, "pvr-height" , &val);
 224     p_sys->i_height = val.i_int;
 225
 226     var_Create( p_access, "pvr-frequency", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 227     var_Get( p_access, "pvr-frequency" , &val);
 228     p_sys->i_frequency = val.i_int;
 229
 230     var_Create( p_access, "pvr-framerate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 231     var_Get( p_access, "pvr-framerate" , &val);
 232     p_sys->i_framerate = val.i_int;
 233
 234     var_Create( p_access, "pvr-keyint", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 235     var_Get( p_access, "pvr-keyint" , &val);
 236     p_sys->i_keyint = val.i_int;
 237
 238     var_Create( p_access, "pvr-bframes", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 239     var_Get( p_access, "pvr-bframes" , &val);
 240     p_sys->i_bframes = val.b_bool;
 241
 242     var_Create( p_access, "pvr-bitrate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 243     var_Get( p_access, "pvr-bitrate" , &val);
 244     p_sys->i_bitrate = val.i_int;
 245
 246     var_Create( p_access, "pvr-bitrate-peak", VLC_VAR_INTEGER |
 247                                               VLC_VAR_DOINHERIT );
 248     var_Get( p_access, "pvr-bitrate-peak" , &val);
 249     p_sys->i_bitrate_peak = val.i_int;
 250
 251     var_Create( p_access, "pvr-bitrate-mode", VLC_VAR_INTEGER |
 252                                               VLC_VAR_DOINHERIT );
 253     var_Get( p_access, "pvr-bitrate-mode" , &val);
 254     p_sys->i_bitrate_mode = val.i_int;
 255
 256     var_Create( p_access, "pvr-audio-bitmask", VLC_VAR_INTEGER |
 257                                               VLC_VAR_DOINHERIT );
 258     var_Get( p_access, "pvr-audio-bitmask" , &val);
 259     p_sys->i_audio_bitmask = val.i_int;
 260     var_Create( p_access, "pvr-channel", VLC_VAR_INTEGER |
 261                                               VLC_VAR_DOINHERIT );
 262     var_Get( p_access, "pvr-channel" , &val);
 263     p_sys->i_input = val.i_int;
 264
 265     /* parse command line options */
 266     psz_tofree = strdup( p_access->psz_path );
 267     psz_parser = psz_tofree;
 268
 269     if( *psz_parser )
 270     {
 271         for( ;; )
 272         {
 273             if ( !strncmp( psz_parser, "norm=", strlen( "norm=" ) ) )
 274             {
 275                 char *psz_parser_init;
 276                 psz_parser += strlen( "norm=" );
 277                 psz_parser_init = psz_parser;
 278                 while ( *psz_parser != ':' && *psz_parser != ','
 279                                                     && *psz_parser != '\0' )
 280                 {
 281                     psz_parser++;
 282                 }
 283
 284                 if ( !strncmp( psz_parser_init, "secam" ,
 285                                psz_parser - psz_parser_init ) )
 286                 {
 287                     p_sys->i_standard = V4L2_STD_SECAM;
 288                 }
 289                 else if ( !strncmp( psz_parser_init, "pal" ,
 290                                     psz_parser - psz_parser_init ) )
 291                 {
 292                     p_sys->i_standard = V4L2_STD_PAL;
 293                 }
 294                 else if ( !strncmp( psz_parser_init, "ntsc" ,
 295                                     psz_parser - psz_parser_init ) )
 296                 {
 297                     p_sys->i_standard = V4L2_STD_NTSC;
 298                 }
 299                 else
 300                 {
 301                     p_sys->i_standard = strtol( psz_parser_init ,
 302                                                 &psz_parser, 0 );
 303                 }
 304             }
 305             else if( !strncmp( psz_parser, "channel=",
 306                                strlen( "channel=" ) ) )
 307             {
 308                 p_sys->i_input =
 309                   strtol( psz_parser + strlen( "channel=" ),
 310                             &psz_parser, 0 );
 311             }
 312             else if( !strncmp( psz_parser, "device=", strlen( "device=" ) ) )
 313             {
 314                 psz_device = calloc( strlen( "/dev/videox" ) + 1, 1 );
 315                 sprintf( psz_device, "/dev/video%ld",
 316                             strtol( psz_parser + strlen( "device=" ),
 317                             &psz_parser, 0 ) );
 318             }
 319             else if( !strncmp( psz_parser, "frequency=",
 320                                strlen( "frequency=" ) ) )
 321             {
 322                 p_sys->i_frequency =
 323                   strtol( psz_parser + strlen( "frequency=" ),
 324                             &psz_parser, 0 );
 325             }
 326             else if( !strncmp( psz_parser, "framerate=",
 327                                strlen( "framerate=" ) ) )
 328             {
 329                 p_sys->i_framerate =
 330                     strtol( psz_parser + strlen( "framerate=" ),
 331                             &psz_parser, 0 );
 332             }
 333             else if( !strncmp( psz_parser, "keyint=",
 334                                strlen( "keyint=" ) ) )
 335             {
 336                 p_sys->i_keyint =
 337                     strtol( psz_parser + strlen( "keyint=" ),
 338                             &psz_parser, 0 );
 339             }
 340             else if( !strncmp( psz_parser, "bframes=",
 341                                strlen( "bframes=" ) ) )
 342             {
 343                 p_sys->i_bframes =
 344                     strtol( psz_parser + strlen( "bframes=" ),
 345                             &psz_parser, 0 );
 346             }
 347
 348             else if( !strncmp( psz_parser, "width=",
 349                                strlen( "width=" ) ) )
 350             {
 351                 p_sys->i_width =
 352                     strtol( psz_parser + strlen( "width=" ),
 353                             &psz_parser, 0 );
 354             }
 355             else if( !strncmp( psz_parser, "height=",
 356                                strlen( "height=" ) ) )
 357             {
 358                 p_sys->i_height =
 359                     strtol( psz_parser + strlen( "height=" ),
 360                             &psz_parser, 0 );
 361             }
 362             else if( !strncmp( psz_parser, "audio=",
 363                                strlen( "audio=" ) ) )
 364             {
 365                 p_sys->i_audio_bitmask =
 366                     strtol( psz_parser + strlen( "audio=" ),
 367                             &psz_parser, 0 );
 368             }
 369             else if( !strncmp( psz_parser, "bitrate=",
 370                                strlen( "bitrate=" ) ) )
 371             {
 372                 p_sys->i_bitrate =
 373                     strtol( psz_parser + strlen( "bitrate=" ),
 374                             &psz_parser, 0 );
 375             }
 376             else if( !strncmp( psz_parser, "maxbitrate=",
 377                                strlen( "maxbitrate=" ) ) )
 378             {
 379                 p_sys->i_bitrate_peak =
 380                     strtol( psz_parser + strlen( "maxbitrate=" ),
 381                             &psz_parser, 0 );
 382             }
 383             else if( !strncmp( psz_parser, "bitratemode=",
 384                                strlen( "bitratemode=" ) ) )
 385             {
 386                 char *psz_parser_init;
 387                 psz_parser += strlen( "bitratemode=" );
 388                 psz_parser_init = psz_parser;
 389                 while ( *psz_parser != ':' && *psz_parser != ','
 390                          && *psz_parser != '\0' )
 391                 {
 392                     psz_parser++;
 393                 }
 394
 395                 if ( !strncmp( psz_parser_init, "vbr" ,
 396                                psz_parser - psz_parser_init ) )
 397                 {
 398                      p_sys->i_bitrate_mode = 0;
 399                 }
 400                 else if ( !strncmp( psz_parser_init, "cbr" ,
 401                                     psz_parser - psz_parser_init ) )
 402                 {
 403                     p_sys->i_bitrate_mode = 1;
 404                 }
 405             }
 406             else if( !strncmp( psz_parser, "size=",
 407                                strlen( "size=" ) ) )
 408             {
 409                 p_sys->i_width =
 410                     strtol( psz_parser + strlen( "size=" ),
 411                             &psz_parser, 0 );
 412                 p_sys->i_height =
 413                     strtol( psz_parser + 1 ,
 414                             &psz_parser, 0 );
 415             }
 416             else
 417             {
 418                 char *psz_parser_init;
 419                 psz_parser_init = psz_parser;
 420                 while ( *psz_parser != ':' && *psz_parser != ',' && *psz_parser != '\0' )
 421                 {
 422                     psz_parser++;
 423                 }
 424                 psz_device = calloc( psz_parser - psz_parser_init + 1, 1 );
 425                 strncpy( psz_device, psz_parser_init,
 426                          psz_parser - psz_parser_init );
 427             }
 428             if( *psz_parser )
 429                 psz_parser++;
 430             else
 431                 break;
 432         }
 433     }
 434
 435     //give a default value to psz_device if none has bee specified
 436
 437     if (!psz_device)
 438     {
 439         psz_device = calloc( strlen( "/dev/videox" ) + 1, 1 );
 440         strcpy( psz_device, "/dev/video0" );
 441     }
 442
 443     free( psz_tofree );
 444
 445     /* open the device */
 446     if( ( p_sys->i_fd = open( psz_device, O_RDWR ) ) < 0 )
 447     {
 448         msg_Err( p_access, "cannot open device (%s)", strerror( errno ) );
 449         return VLC_EGENERIC;
 450     }
 451     else
 452     {
 453         msg_Dbg( p_access, "using video device: %s",psz_device);
 454     }
 455
 456     free( psz_device );
 457
 458     /* set the input */
 459     if ( p_sys->i_input != -1 )
 460     {
 461         if ( ioctl( p_sys->i_fd, VIDIOC_S_INPUT, &p_sys->i_input ) < 0 )
 462         {
 463             msg_Warn( p_access, "VIDIOC_S_INPUT failed" );
 464         }
 465         else
 466         {
 467             msg_Dbg( p_access, "input set to:%d", p_sys->i_input);
 468         }
 469     }
 470
 471     /* set the video standard */
 472     if ( p_sys->i_standard != V4L2_STD_UNKNOWN )
 473     {
 474         if ( ioctl( p_sys->i_fd, VIDIOC_S_STD, &p_sys->i_standard ) < 0 )
 475         {
 476             msg_Warn( p_access, "VIDIOC_S_STD failed" );
 477         }
 478         else
 479         {
 480             msg_Dbg( p_access, "video standard set to:%x", p_sys->i_standard);
 481         }
 482     }
 483
 484     /* set the picture size */
 485     if ( p_sys->i_width != -1 || p_sys->i_height != -1 )
 486     {
 487         if ( ioctl( p_sys->i_fd, VIDIOC_G_FMT, &vfmt ) < 0 )
 488         {
 489             msg_Warn( p_access, "VIDIOC_G_FMT failed" );
 490         }
 491         else
 492         {
 493             if ( p_sys->i_width != -1 )
 494             {
 495                 vfmt.fmt.pix.width = p_sys->i_width;
 496             }
 497
 498             if ( p_sys->i_height != -1 )
 499             {
 500                 vfmt.fmt.pix.height = p_sys->i_height;
 501             }
 502
 503             if ( ioctl( p_sys->i_fd, VIDIOC_S_FMT, &vfmt ) < 0 )
 504             {
 505                 msg_Warn( p_access, "VIDIOC_S_FMT failed" );
 506             }
 507             else
 508             {
 509                 msg_Dbg( p_access, "picture size set to:%dx%d",
 510                          vfmt.fmt.pix.width, vfmt.fmt.pix.height );
 511             }
 512         }
 513     }
 514
 515     /* set the frequency */
 516     if ( p_sys->i_frequency != -1 )
 517     {
 518         vf.tuner = 0; /* TODO: let the user choose the tuner */
 519         if ( ioctl( p_sys->i_fd, VIDIOC_G_FREQUENCY, &vf ) < 0 )
 520         {
 521             msg_Warn( p_access, "VIDIOC_G_FREQUENCY failed (%s)",
 522                       strerror( errno ) );
 523         }
 524         else
 525         {
 526             vf.frequency = p_sys->i_frequency * 16 / 1000;
 527             if( ioctl( p_sys->i_fd, VIDIOC_S_FREQUENCY, &vf ) < 0 )
 528             {
 529                 msg_Warn( p_access, "VIDIOC_S_FREQUENCY failed (%s)",
 530                           strerror( errno ) );
 531             }
 532             else
 533             {
 534                 msg_Dbg( p_access, "Tuner frequency set to:%d",
 535                          p_sys->i_frequency);
 536             }
 537         }
 538     }
 539
 540     /* codec parameters */
 541     if ( p_sys->i_framerate != -1
 542             || p_sys->i_bitrate_mode != -1
 543             || p_sys->i_bitrate_peak != -1
 544             || p_sys->i_keyint != -1
 545             || p_sys->i_bframes != -1
 546             || p_sys->i_bitrate != -1
 547             || p_sys->i_audio_bitmask != -1 )
 548     {
 549         if ( ioctl( p_sys->i_fd, IVTV_IOC_G_CODEC, &codec ) < 0 )
 550         {
 551             msg_Warn( p_access, "IVTV_IOC_G_CODEC failed" );
 552         }
 553         else
 554         {
 555             if ( p_sys->i_framerate != -1 )
 556             {
 557                 switch ( p_sys->i_framerate )
 558                 {
 559                     case 30:
 560                         codec.framerate = 0;
 561                         break;
 562
 563                     case 25:
 564                         codec.framerate = 1;
 565                         break;
 566
 567                     default:
 568                         msg_Warn( p_access, "invalid framerate, reverting to 25" );
 569                         codec.framerate = 1;
 570                         break;
 571                 }
 572             }
 573
 574             if ( p_sys->i_bitrate != -1 )
 575             {
 576                 codec.bitrate = p_sys->i_bitrate;
 577             }
 578
 579             if ( p_sys->i_bitrate_peak != -1 )
 580             {
 581                 codec.bitrate_peak = p_sys->i_bitrate_peak;
 582             }
 583
 584             if ( p_sys->i_bitrate_mode != -1 )
 585             {
 586                 codec.bitrate_mode = p_sys->i_bitrate_mode;
 587             }
 588
 589             if ( p_sys->i_audio_bitmask != -1 )
 590             {
 591                 codec.audio_bitmask = p_sys->i_audio_bitmask;
 592             }
 593             if ( p_sys->i_keyint != -1 )
 594             {
 595                 codec.framespergop = p_sys->i_keyint;
 596             }
 597
 598             if ( p_sys->i_bframes != -1 )
 599             {
 600                 codec.bframes = p_sys->i_bframes;
 601             }
 602             if( ioctl( p_sys->i_fd, IVTV_IOC_S_CODEC, &codec ) < 0 )
 603             {
 604                 msg_Warn( p_access, "IVTV_IOC_S_CODEC failed" );
 605             }
 606             else
 607             {
 608                 msg_Dbg( p_access, "Setting codec parameters to:  framerate: %d, bitrate: %d/%d/%d",
 609                codec.framerate, codec.bitrate, codec.bitrate_peak, codec.bitrate_mode );
 610             }
 611         }
 612     }
 613
 614     /* do a quick read */
 615 #if 0
 616     if ( p_sys->i_fd )
 617     {
 618         if ( read( p_sys->i_fd, psz_tmp, 1 ) )
 619         {
 620             msg_Dbg(p_input, "Could read byte from device");
 621         }
 622         else
 623         {
 624             msg_Warn(p_input, "Could not read byte from device");
 625         }
 626     }
 627 #endif
 628     return VLC_SUCCESS;
 629 }
 630
 631 /*****************************************************************************
 632  * Close: close the device
 633  *****************************************************************************/
 634 static void Close( vlc_object_t * p_this )
 635 {
 636     access_t *p_access = (access_t*) p_this;
 637     access_sys_t * p_sys = p_access->p_sys;
 638
 639     close( p_sys->i_fd );
 640     free( p_sys );
 641 }
 642
 643 /*****************************************************************************
 644  * Read
 645  *****************************************************************************/
 646 static int Read( access_t * p_access, uint8_t * p_buffer, int i_len )
 647 {
 648     access_sys_t * p_sys = p_access->p_sys;
 649
 650     int i_ret;
 651
 652     struct timeval timeout;
 653     fd_set fds;
 654
 655     FD_ZERO( &fds );
 656     FD_SET( p_sys->i_fd, &fds );
 657     timeout.tv_sec = 0;
 658     timeout.tv_usec = 500000;
 659
 660     if( p_access->info.b_eof )
 661         return 0;
 662
 663     while( !( i_ret = select( p_sys->i_fd + 1, &fds, NULL, NULL, &timeout) ) )
 664     {
 665         FD_ZERO( &fds );
 666         FD_SET( p_sys->i_fd, &fds );
 667         timeout.tv_sec = 0;
 668         timeout.tv_usec = 500000;
 669
 670         if( p_access->b_die )
 671             return 0;
 672     }
 673
 674     if( i_ret < 0 )
 675     {
 676         msg_Err( p_access, "select error (%s)", strerror( errno ) );
 677         return -1;
 678     }
 679
 680     i_ret = read( p_sys->i_fd, p_buffer, i_len );
 681     if( i_ret == 0 )
 682     {
 683         p_access->info.b_eof = VLC_TRUE;
 684     }
 685     else if( i_ret > 0 )
 686     {
 687         p_access->info.i_pos += i_ret;
 688     }
 689
 690     return i_ret;
 691 }
 692
 693 /*****************************************************************************
 694  * Control
 695  *****************************************************************************/
 696 static int Control( access_t *p_access, int i_query, va_list args )
 697 {
 698     access_sys_t *p_sys = p_access->p_sys;
 699     vlc_bool_t   *pb_bool;
 700     int          *pi_int;
 701     int64_t      *pi_64;
 702
 703     switch( i_query )
 704     {
 705         /* */
 706         case ACCESS_CAN_SEEK:
 707         case ACCESS_CAN_FASTSEEK:
 708             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
 709             *pb_bool = VLC_FALSE;
 710             break;
 711         case ACCESS_CAN_PAUSE:
 712             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
 713             *pb_bool = VLC_FALSE;
 714             break;
 715         case ACCESS_CAN_CONTROL_PACE:
 716             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
 717             *pb_bool = VLC_FALSE;
 718             break;
 719
 720         /* */
 721         case ACCESS_GET_MTU:
 722             pi_int = (int*)va_arg( args, int * );
 723             *pi_int = 0;
 724             break;
 725
 726         case ACCESS_GET_PTS_DELAY:
 727             pi_64 = (int64_t*)va_arg( args, int64_t * );
 728             *pi_64 = 1000000;
 729             break;
 730
 731         /* */
 732         case ACCESS_SET_PAUSE_STATE:
 733             /* Nothing to do */
 734             break;
 735
 736         case ACCESS_GET_TITLE_INFO:
 737         case ACCESS_SET_TITLE:
 738         case ACCESS_SET_SEEKPOINT:
 739         case ACCESS_SET_PRIVATE_ID_STATE:
 740             return VLC_EGENERIC;
 741
 742         default:
 743             msg_Warn( p_access, "unimplemented query in control" );
 744             return VLC_EGENERIC;
 745
 746     }
 747     return VLC_SUCCESS;
 748 }
 749