git.sesse.net Git - vlc/blob - modules/video_filter/remoteosd.c

   1 /*****************************************************************************
   2  * remoteosd.c: remote osd over vnc filter module
   3  *****************************************************************************
   4  * Copyright (C) 2007-2008 Matthias Bauer
   5  * $Id$
   6  *
   7  * Authors: Matthias Bauer <matthias dot bauer #_at_# gmx dot ch>
   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 implid 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * RemoteOSD uses the RFB-Protocol of VNC to display an On-Screen-Display
  26  * menu generated by a streaming server as overlay for the streamed video.
  27  *
  28  * The streaming server that implements this is the ffnetdev plugin for VDR.
  29  * VDR (VideoDiskRecorder) is an Linux based OpenSource harddisk recorder
  30  * software.
  31  * The VDR ffnetdev plugin emulates the hardware MPEG decoder and streams the
  32  * video over the network instead of hardware video outputs.
  33  * The OSD menu of VDR is offered with the RFB protocol to a VNC client.
  34  *
  35  * In fact this video-filter is a simple VNC client that could be also used to
  36  * connect to a real VNC host.
  37  * Only 8-bit color is supported at the moment.
  38  * Using password protected VNC hosts is supported but not recommended, because
  39  * you need to insert the used password in the plugin configuration page of
  40  * VLC configuration in plain text and it's saved in plain text.
  41  *****************************************************************************/
  42
  43 //#define VNC_DEBUG
  44
  45 /*****************************************************************************
  46  * Preamble
  47  *****************************************************************************/
  48
  49 #ifdef HAVE_CONFIG_H
  50 # include "config.h"
  51 #endif
  52
  53 #include <vlc_common.h>
  54 #include <vlc_plugin.h>
  55 #include <vlc_vout.h>
  56
  57 #include "vlc_filter.h"
  58 #include "filter_common.h"
  59 #include "vlc_image.h"
  60 #include "vlc_osd.h"
  61 #include "vlc_keys.h"
  62
  63 #include <vlc_network.h>
  64 #include <gcrypt.h>              /* to encrypt password */
  65 #include <vlc_gcrypt.h>
  66
  67 #include "remoteosd_rfbproto.h" /* type definitions of the RFB protocol for VNC */
  68
  69 /*****************************************************************************
  70  * Module descriptor
  71  *****************************************************************************/
  72 #define READ_BUFFER_SIZE 1000000
  73
  74 #define RMTOSD_HOST_TEXT N_("VNC Host")
  75 #define RMTOSD_HOST_LONGTEXT N_( \
  76     "VNC hostname or IP address." )
  77
  78 #define RMTOSD_PORT_TEXT N_("VNC Port")
  79 #define RMTOSD_PORT_LONGTEXT N_( \
  80     "VNC portnumber." )
  81
  82 #define RMTOSD_PASSWORD_TEXT N_("VNC Password")
  83 #define RMTOSD_PASSWORD_LONGTEXT N_( \
  84     "VNC password." )
  85
  86 #define RMTOSD_UPDATE_TEXT N_("VNC poll interval" )
  87 #define RMTOSD_UPDATE_LONGTEXT N_( \
  88     "In this interval an update from VNC is requested, default every 300 ms. ")
  89
  90 #define RMTOSD_POLL_TEXT N_("VNC polling")
  91 #define RMTOSD_POLL_LONGTEXT N_( \
  92     "Activate VNC polling. Do NOT activate for use as VDR ffnetdev client." )
  93
  94 #define RMTOSD_MOUSE_TEXT N_("Mouse events")
  95 #define RMTOSD_MOUSE_LONGTEXT N_( \
  96     "Send mouse events to VNC host. Not needed for use as VDR ffnetdev client." )
  97
  98 #define RMTOSD_KEYS_TEXT N_("Key events")
  99 #define RMTOSD_KEYS_LONGTEXT N_( \
 100     "Send key events to VNC host." )
 101
 102 #define RMTOSD_ALPHA_TEXT N_("Alpha transparency value (default 255)")
 103 #define RMTOSD_ALPHA_LONGTEXT N_( \
 104     "The transparency of the OSD VNC can be changed by giving a value " \
 105     "between 0 and 255. A lower value specifies more transparency a higher " \
 106     "means less transparency. The default is being not transparent " \
 107     "(value 255) the minimum is fully transparent (value 0)." )
 108
 109 #define RMTOSD_CFG "rmtosd-"
 110
 111 #define RMTOSD_UPDATE_MIN     200
 112 #define RMTOSD_UPDATE_DEFAULT 1000
 113 #define RMTOSD_UPDATE_MAX     300
 114
 115 static int  CreateFilter ( vlc_object_t * );
 116 static void DestroyFilter( vlc_object_t * );
 117
 118 vlc_module_begin ()
 119     set_description( N_("Remote-OSD over VNC") )
 120     set_capability( "sub filter", 100 )
 121     set_shortname( N_("Remote-OSD") )
 122     set_category( CAT_VIDEO )
 123     set_subcategory( SUBCAT_VIDEO_SUBPIC )
 124     add_shortcut( "rmtosd" )
 125     set_callbacks( CreateFilter, DestroyFilter )
 126
 127     add_string( RMTOSD_CFG "host", "myvdr", NULL, RMTOSD_HOST_TEXT,
 128         RMTOSD_HOST_LONGTEXT, false )
 129     add_integer_with_range( RMTOSD_CFG "port", 20001, 1, 0xFFFF, NULL,
 130         RMTOSD_PORT_TEXT, RMTOSD_PORT_LONGTEXT, false )
 131     add_password( RMTOSD_CFG "password", "", NULL, RMTOSD_PASSWORD_TEXT,
 132         RMTOSD_PASSWORD_LONGTEXT, false )
 133     add_integer_with_range( RMTOSD_CFG "update", RMTOSD_UPDATE_DEFAULT,
 134         RMTOSD_UPDATE_MIN, RMTOSD_UPDATE_MAX, NULL, RMTOSD_UPDATE_TEXT,
 135         RMTOSD_UPDATE_LONGTEXT, true )
 136     add_bool( RMTOSD_CFG "vnc-polling", 0, NULL,
 137               RMTOSD_POLL_TEXT , RMTOSD_POLL_LONGTEXT, false )
 138     add_bool( RMTOSD_CFG "mouse-events", 0, NULL,
 139               RMTOSD_MOUSE_TEXT , RMTOSD_MOUSE_LONGTEXT, false )
 140     add_bool( RMTOSD_CFG "key-events", 0, NULL,
 141               RMTOSD_KEYS_TEXT , RMTOSD_KEYS_LONGTEXT, false )
 142     add_integer_with_range( RMTOSD_CFG "alpha", 255, 0, 255, NULL,
 143         RMTOSD_ALPHA_TEXT, RMTOSD_ALPHA_LONGTEXT, true )
 144
 145 vlc_module_end ()
 146
 147
 148 /*****************************************************************************
 149  * Local prototypes
 150  *****************************************************************************/
 151 #define CHALLENGESIZE 16
 152 #define MAX_VNC_SERVER_NAME_LENGTH 255
 153
 154 /* subfilter functions */
 155 static subpicture_t *Filter( filter_t *, mtime_t );
 156
 157 static int MouseEvent ( vlc_object_t *p_this, char const *psz_var,
 158                         vlc_value_t oldval, vlc_value_t newval, void *p_data );
 159
 160 static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
 161                      vlc_value_t oldval, vlc_value_t newval, void *p_data );
 162
 163 static void stop_osdvnc ( filter_t *p_filter );
 164
 165 static void* vnc_worker_thread ( vlc_object_t *p_thread_obj );
 166
 167 static void* update_request_thread( vlc_object_t *p_thread_obj );
 168
 169 static bool open_vnc_connection ( filter_t *p_filter );
 170
 171 static bool handshaking ( filter_t *p_filter );
 172
 173 static bool process_server_message ( filter_t *p_filter,
 174                                      rfbServerToClientMsg *msg );
 175
 176 static inline void rgb_to_yuv( uint8_t *y, uint8_t *u, uint8_t *v,
 177                                int r, int g, int b );
 178
 179 static inline bool fill_rect( filter_sys_t* p_sys,
 180                               uint16_t i_x, uint16_t i_y,
 181                               uint16_t i_w, uint16_t i_h,
 182                               uint8_t i_color );
 183 static inline bool copy_rect( filter_sys_t* p_sys,
 184                               uint16_t i_x, uint16_t i_y,
 185                               uint16_t i_w, uint16_t i_h,
 186                               uint16_t i_sx, uint16_t i_sy );
 187
 188
 189 static inline bool raw_line(  filter_sys_t* p_sys,
 190                               uint16_t i_x, uint16_t i_y,
 191                               uint16_t i_w );
 192
 193 static void vnc_encrypt_bytes( unsigned char *bytes, char *passwd );
 194
 195
 196 /*****************************************************************************
 197  * Sub filter code
 198  *****************************************************************************/
 199
 200 /*****************************************************************************
 201  * Local prototypes
 202  *****************************************************************************/
 203 struct filter_sys_t
 204 {
 205     VLC_COMMON_MEMBERS
 206
 207     bool          b_need_update;       /* VNC picture is updated, do update the OSD*/
 208     mtime_t       i_vnc_poll_interval; /* Update the OSD menu every n ms */
 209
 210     uint8_t       i_alpha;             /* alpha transparency value */
 211
 212     char          *psz_host;           /* VNC host */
 213     int           i_port;
 214
 215     char          *psz_passwd;         /* VNC password */
 216
 217     bool          b_vnc_poll;          /* Activate VNC polling ? */
 218     bool          b_vnc_mouse_events;  /* Send MouseEvents ? */
 219     bool          b_vnc_key_events;    /* Send KeyEvents ? */
 220
 221     bool          b_connection_active; /* Handshaking finished ? */
 222
 223     vlc_mutex_t   lock;                /* To lock for read/write on picture */
 224
 225     picture_t     *p_pic;              /* The picture with OSD data from VNC */
 226
 227     vout_thread_t *p_vout;             /* Pointer to video-out thread */
 228
 229     int           i_socket;            /* Socket used for VNC */
 230
 231     uint16_t      i_vnc_width;          /* The with of the VNC screen */
 232     uint16_t      i_vnc_height;         /* The height of the VNC screen */
 233         uint32_t      i_vnc_pixels;         /* The pixels of the VNC screen */
 234
 235     bool    b_alpha_from_vnc;    /* Special ffnetdev alpha feature enabled ? */
 236
 237     char          read_buffer[READ_BUFFER_SIZE];
 238
 239     bool          b_continue;
 240
 241     vlc_object_t* p_worker_thread;
 242
 243     uint8_t       ar_color_table_yuv[256][4];
 244 };
 245
 246 /*****************************************************************************
 247  * CreateFilter: Create the filter and open the definition file
 248  *****************************************************************************/
 249 static int CreateFilter ( vlc_object_t *p_this )
 250 {
 251     filter_t *p_filter = (filter_t *)p_this;
 252     filter_sys_t *p_sys = NULL;
 253
 254     msg_Dbg( p_filter, "Creating vnc osd filter..." );
 255
 256     p_filter->p_sys = p_sys = malloc( sizeof(*p_sys) );
 257     if( !p_filter->p_sys )
 258         return VLC_ENOMEM;
 259     memset( p_sys, 0, sizeof(*p_sys) );
 260
 261     /* Populating struct */
 262     vlc_mutex_init( &p_sys->lock );
 263     p_sys->b_continue = true;
 264     p_sys->i_socket = -1;
 265     p_sys->p_pic = NULL;
 266
 267     p_sys->psz_host = var_CreateGetString( p_this, RMTOSD_CFG "host" );
 268     if( EMPTY_STR(p_sys->psz_host) )
 269     {
 270         msg_Err( p_filter, "unable to get vnc host" );
 271         goto error;
 272     }
 273
 274     p_sys->psz_passwd = var_CreateGetString( p_this, RMTOSD_CFG "password" );
 275     if( !p_sys->psz_passwd )
 276     {
 277         msg_Err( p_filter, "unable to get vnc password" );
 278         goto error;
 279     }
 280
 281     p_sys->i_port = var_CreateGetIntegerCommand( p_this, RMTOSD_CFG "port" );
 282
 283     p_sys->i_alpha = var_CreateGetIntegerCommand( p_this, RMTOSD_CFG "alpha" );
 284
 285     /* in milliseconds, 0 disables polling, should not be lower than 100 */
 286     p_sys->i_vnc_poll_interval  = var_CreateGetIntegerCommand( p_this,
 287                                                        RMTOSD_CFG "update" );
 288     if ( p_sys->i_vnc_poll_interval < 100)
 289     {
 290        p_sys->i_vnc_poll_interval = 100;
 291     }
 292
 293     for ( int i = 0; i < 256; i++ )
 294     {
 295         p_sys->ar_color_table_yuv[i][0] = 255;
 296         p_sys->ar_color_table_yuv[i][1] = 255;
 297         p_sys->ar_color_table_yuv[i][2] = 255;
 298         p_sys->ar_color_table_yuv[i][3] = 255;
 299     }
 300
 301     p_sys->b_vnc_poll = var_CreateGetBoolCommand( p_this,
 302                                             RMTOSD_CFG "vnc-polling" );
 303     p_sys->b_vnc_mouse_events = var_CreateGetBoolCommand( p_this,
 304                                             RMTOSD_CFG "mouse-events" );
 305     p_sys->b_vnc_key_events = var_CreateGetBoolCommand( p_this,
 306                                             RMTOSD_CFG "key-events" );
 307
 308     /* Keep track of OSD Events */
 309     p_sys->b_need_update  = false;
 310
 311     /* Attach subpicture filter callback */
 312     p_filter->pf_sub_filter = Filter;
 313
 314     p_sys->p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_PARENT );
 315
 316     if( p_sys->p_vout )
 317     {
 318         var_AddCallback( p_sys->p_vout, "mouse-moved",
 319                          MouseEvent, p_this );
 320         var_AddCallback( p_sys->p_vout, "mouse-button-down",
 321                          MouseEvent, p_this );
 322         var_AddCallback( p_sys->p_vout->p_libvlc, "key-pressed",
 323                          KeyEvent, p_this );
 324     }
 325
 326     es_format_Init( &p_filter->fmt_out, SPU_ES, VLC_FOURCC( 's','p','u',' ' ) );
 327     p_filter->fmt_out.i_priority = 0;
 328
 329     vlc_gcrypt_init();
 330
 331     /* create the vnc worker thread */
 332     p_sys->p_worker_thread = vlc_object_create( p_this,
 333                                                 sizeof( vlc_object_t ) );
 334     vlc_object_attach( p_sys->p_worker_thread, p_this );
 335     if( vlc_thread_create( p_sys->p_worker_thread, "vnc worker thread",
 336                            vnc_worker_thread, VLC_THREAD_PRIORITY_LOW ) )
 337     {
 338         vlc_object_detach( p_sys->p_worker_thread );
 339         vlc_object_release( p_sys->p_worker_thread );
 340         msg_Err( p_filter, "cannot spawn vnc message reader thread" );
 341         goto error;
 342     }
 343
 344     msg_Dbg( p_filter, "osdvnc filter started" );
 345
 346     return VLC_SUCCESS;
 347
 348 error:
 349     msg_Err( p_filter, "osdvnc filter discarded" );
 350
 351     stop_osdvnc( p_filter );
 352
 353     vlc_mutex_destroy( &p_sys->lock );
 354     free( p_sys->psz_host );
 355     free( p_sys->psz_passwd );
 356     free( p_sys );
 357
 358     return VLC_EGENERIC;
 359 }
 360
 361 /*****************************************************************************
 362  * DestroyFilter: Make a clean exit of this plugin
 363  *****************************************************************************/
 364 static void DestroyFilter( vlc_object_t *p_this )
 365 {
 366     filter_t     *p_filter = (filter_t*)p_this;
 367     filter_sys_t *p_sys = p_filter->p_sys;
 368
 369     msg_Dbg( p_filter, "DestroyFilter called." );
 370
 371     stop_osdvnc( p_filter );
 372
 373     if( p_sys->p_vout )
 374     {
 375         var_DelCallback( p_sys->p_vout, "mouse-moved",
 376                          MouseEvent, p_this );
 377         var_DelCallback( p_sys->p_vout, "mouse-button-down",
 378                          MouseEvent, p_this );
 379         var_DelCallback( p_sys->p_vout->p_libvlc, "key-pressed",
 380                          KeyEvent, p_this );
 381
 382         vlc_object_release( p_sys->p_vout );
 383     }
 384
 385     var_Destroy( p_this, RMTOSD_CFG "host" );
 386     var_Destroy( p_this, RMTOSD_CFG "port" );
 387     var_Destroy( p_this, RMTOSD_CFG "password" );
 388     var_Destroy( p_this, RMTOSD_CFG "update" );
 389     var_Destroy( p_this, RMTOSD_CFG "vnc-polling" );
 390     var_Destroy( p_this, RMTOSD_CFG "mouse-events" );
 391     var_Destroy( p_this, RMTOSD_CFG "key-events" );
 392     var_Destroy( p_this, RMTOSD_CFG "alpha" );
 393
 394     vlc_mutex_destroy( &p_sys->lock );
 395     free( p_sys->psz_host );
 396     free( p_sys->psz_passwd );
 397     free( p_sys );
 398 }
 399
 400 static void stop_osdvnc ( filter_t *p_filter )
 401 {
 402     filter_sys_t *p_sys = p_filter->p_sys;
 403
 404     /* It will unlock socket reading */
 405     vlc_object_kill( p_filter );
 406
 407     /* */
 408     if( p_sys->p_worker_thread )
 409     {
 410         msg_Dbg( p_filter, "joining worker_thread" );
 411         vlc_object_kill( p_sys->p_worker_thread );
 412         vlc_thread_join( p_sys->p_worker_thread );
 413         vlc_object_detach( p_sys->p_worker_thread );
 414         vlc_object_release( p_sys->p_worker_thread );
 415         msg_Dbg( p_filter, "released worker_thread" );
 416     }
 417
 418     msg_Dbg( p_filter, "osdvnc stopped" );
 419 }
 420
 421 static bool read_exact( filter_t *p_filter,
 422                         int i_socket,
 423                         char* p_readbuf,
 424                         int i_bytes )
 425 {
 426     return i_bytes == net_Read( p_filter, i_socket, NULL,
 427                                   (unsigned char*)p_readbuf,
 428                                   i_bytes, true );
 429 }
 430
 431
 432 static bool write_exact( filter_t *p_filter,
 433                          int i_socket,
 434                          char* p_writebuf,
 435                          int i_bytes )
 436 {
 437     return i_bytes == net_Write( p_filter, i_socket, NULL,
 438                                   (unsigned char*)p_writebuf, i_bytes );
 439 }
 440
 441 static bool open_vnc_connection ( filter_t *p_filter )
 442 {
 443     filter_sys_t *p_sys = p_filter->p_sys;
 444
 445     msg_Dbg( p_filter, "Open socket to vnc server on %s:%u.",
 446               p_sys->psz_host, p_sys->i_port );
 447
 448     p_sys->i_socket = net_ConnectTCP( p_filter, p_sys->psz_host, p_sys->i_port );
 449
 450     if( p_sys->i_socket < 0 )
 451     {
 452         msg_Err( p_filter, "Could not open socket" );
 453         return false;
 454     }
 455
 456     msg_Dbg( p_filter, "socket is open." );
 457
 458     return true;
 459 }
 460
 461 static bool handshaking ( filter_t *p_filter )
 462 {
 463     filter_sys_t *p_sys = p_filter->p_sys;
 464
 465     msg_Dbg( p_filter, "Reading protocol version" );
 466
 467     rfbProtocolVersionMsg pv;
 468     if ( !read_exact( p_filter, p_sys->i_socket, pv,
 469                       sz_rfbProtocolVersionMsg ) )
 470     {
 471         msg_Err( p_filter, "Could not read version message" );
 472         return false;
 473     }
 474     pv[sz_rfbProtocolVersionMsg] = '\0'; /* pv size is sz_rfbProtocolVersionMsg+1 */
 475
 476     msg_Dbg( p_filter, "Server version is %s", pv );
 477
 478     strncpy(pv, "RFB 003.003\n", sz_rfbProtocolVersionMsg);
 479
 480     if( !write_exact(p_filter, p_sys->i_socket, pv,
 481                      sz_rfbProtocolVersionMsg) )
 482     {
 483         msg_Err( p_filter, "Could not write version message" );
 484         return false;
 485     }
 486
 487     msg_Dbg( p_filter, "Reading authentication scheme" );
 488     uint32_t i_authScheme;
 489     if( !read_exact( p_filter, p_sys->i_socket, (char*)&i_authScheme, 4 ) )
 490     {
 491         msg_Err( p_filter, "Could not read authentication scheme" );
 492         return false;
 493     }
 494     i_authScheme = htonl(i_authScheme);
 495
 496     msg_Dbg( p_filter, "Authentication scheme = %x", i_authScheme );
 497     if ( i_authScheme == rfbConnFailed )
 498     {
 499         msg_Err( p_filter, "Connection rejected by server" );
 500         return false;
 501     }
 502     if (i_authScheme == rfbVncAuth)
 503     {
 504         unsigned char challenge[CHALLENGESIZE];
 505         if ( !read_exact( p_filter, p_sys->i_socket,
 506                           (char*)challenge, CHALLENGESIZE ) )
 507         {
 508             msg_Err( p_filter, "Could not read password challenge" );
 509             return false;
 510         }
 511
 512         vnc_encrypt_bytes( challenge, p_sys->psz_passwd );
 513
 514         if( !write_exact(p_filter, p_sys->i_socket,
 515                          (char*)challenge, CHALLENGESIZE ) )
 516         {
 517             msg_Err( p_filter, "Could not write password" );
 518             return false;
 519         }
 520         uint32_t i_authResult;
 521         if( !read_exact( p_filter, p_sys->i_socket, (char*)&i_authResult, 4 ) )
 522         {
 523             msg_Err( p_filter, "Could not read authentication result" );
 524             return false;
 525         }
 526         i_authResult = htonl(i_authResult);
 527         if (i_authResult != rfbVncAuthOK)
 528         {
 529             msg_Err( p_filter, "VNC authentication failed" );
 530             return false;
 531         }
 532     }
 533
 534     msg_Dbg( p_filter, "Writing client init message" );
 535     rfbClientInitMsg ci;
 536     ci.shared = 1;
 537     if( !write_exact( p_filter, p_sys->i_socket,
 538                       (char*)&ci, sz_rfbClientInitMsg ) )
 539     {
 540         msg_Err( p_filter, "Could not write client init message" );
 541         return false;
 542     }
 543
 544     msg_Dbg( p_filter, "Reading server init message" );
 545     rfbServerInitMsg si;
 546     if( !read_exact( p_filter, p_sys->i_socket,
 547                      (char*)&si, sz_rfbServerInitMsg ) )
 548     {
 549         msg_Err( p_filter, "Could not read server init message" );
 550         return false;
 551     }
 552     si.framebufferWidth = htons(si.framebufferWidth);
 553     si.framebufferHeight = htons(si.framebufferHeight);
 554     si.format.redMax = htons(si.format.redMax);
 555     si.format.greenMax = htons(si.format.greenMax);
 556     si.format.blueMax = htons(si.format.blueMax);
 557
 558     p_sys->i_vnc_width = si.framebufferWidth;
 559     p_sys->i_vnc_height = si.framebufferHeight;
 560
 561     msg_Dbg( p_filter, "Servers preferred pixelformat: "
 562                         "%ux%u, R(%u),G(%u),B(%u), %u bit, depht=%u, %s",
 563                         si.framebufferWidth,
 564                         si.framebufferHeight,
 565                         si.format.redMax,
 566                         si.format.greenMax,
 567                         si.format.blueMax,
 568                         si.format.bitsPerPixel,
 569                         si.format.depth,
 570                         si.format.trueColour ? "TrueColor" : "Not-TrueColor");
 571
 572     uint32_t i_nameLength = htonl(si.nameLength);
 573     if( i_nameLength > MAX_VNC_SERVER_NAME_LENGTH )
 574     {
 575         msg_Err( p_filter, "Server name too long" );
 576         return false;
 577     }
 578     char s_ServerName[MAX_VNC_SERVER_NAME_LENGTH+1];
 579
 580     msg_Dbg( p_filter, "Reading server name with size = %u", i_nameLength );
 581     if( !read_exact( p_filter, p_sys->i_socket, s_ServerName, i_nameLength ) )
 582     {
 583         msg_Err( p_filter, "Could not read server name" );
 584         return false;
 585     }
 586     s_ServerName[i_nameLength] = '\0';
 587
 588     if( strcmp( s_ServerName, "VDR-OSD") == 0 )
 589     {
 590         msg_Dbg( p_filter, "Server is a VDR" );
 591         p_sys->b_alpha_from_vnc = true;
 592     }
 593     else
 594     {
 595         msg_Dbg( p_filter, "Server is a normal VNC" );
 596         p_sys->b_alpha_from_vnc = false;
 597     }
 598
 599
 600     msg_Dbg( p_filter, "Server init message read properly" );
 601     msg_Dbg( p_filter, "Server name is %s", s_ServerName );
 602
 603     msg_Dbg( p_filter, "Writing SetPixelFormat message" );
 604
 605     rfbSetPixelFormatMsg sp;
 606     sp.type = rfbSetPixelFormat;
 607     sp.pad1 = sp.pad2 = 0;
 608     sp.format.bitsPerPixel = 8;
 609     sp.format.depth = 8 ;
 610     sp.format.bigEndian = 1;
 611     sp.format.trueColour = 0;
 612     sp.format.redMax = htons(31);
 613     sp.format.greenMax = htons(31);
 614     sp.format.blueMax = htons(31);
 615     sp.format.redShift = 10;
 616     sp.format.greenShift = 5;
 617     sp.format.blueShift = 0;
 618     sp.format.pad1 = sp.format.pad2 = 0;
 619
 620     if( !write_exact( p_filter, p_sys->i_socket,
 621                       (char*)&sp, sz_rfbSetPixelFormatMsg) )
 622     {
 623         msg_Err( p_filter, "Could not write SetPixelFormat message" );
 624         return false;
 625     }
 626
 627     msg_Dbg( p_filter, "Writing SetEncodings message" );
 628
 629     rfbSetEncodingsMsg se;
 630     se.type = rfbSetEncodings;
 631     se.pad = 0;
 632     se.nEncodings = htons( p_sys->b_alpha_from_vnc ? 3 : 2 );
 633
 634     if( !write_exact( p_filter, p_sys->i_socket,
 635                       (char*)&se, sz_rfbSetEncodingsMsg) )
 636     {
 637         msg_Err( p_filter, "Could not write SetEncodings message begin" );
 638         return false;
 639     }
 640
 641     uint32_t i_encoding;
 642
 643     msg_Dbg( p_filter, "Writing SetEncodings rfbEncodingCopyRect" );
 644     i_encoding = htonl(rfbEncodingCopyRect);
 645     if( !write_exact( p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
 646     {
 647         msg_Err( p_filter, "Could not write encoding type rfbEncodingCopyRect." );
 648         return false;
 649     }
 650
 651     msg_Dbg( p_filter, "Writing SetEncodings rfbEncodingRRE" );
 652     i_encoding = htonl(rfbEncodingRRE);
 653     if( !write_exact(p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
 654     {
 655         msg_Err( p_filter, "Could not write encoding type rfbEncodingRRE." );
 656         return false;
 657     }
 658
 659     if( p_sys->b_alpha_from_vnc )
 660     {
 661         msg_Dbg( p_filter, "Writing SetEncodings rfbEncSpecialUseAlpha" );
 662         i_encoding = 0x00F0FFFF; /* rfbEncSpecialUseAlpha is 0xFFFFF000
 663                                   * before we swap it */
 664         if( !write_exact(p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
 665         {
 666             msg_Err( p_filter, "Could not write encoding type rfbEncSpecialUseAlpha." );
 667             return false;
 668         }
 669     }
 670     return true;
 671
 672 }
 673
 674 static void* vnc_worker_thread( vlc_object_t *p_thread_obj )
 675 {
 676     filter_t* p_filter = (filter_t*)(p_thread_obj->p_parent);
 677     filter_sys_t *p_sys = p_filter->p_sys;
 678     vlc_object_t *p_update_request_thread;
 679     int canc = vlc_savecancel ();
 680
 681     msg_Dbg( p_filter, "VNC worker thread started" );
 682
 683     if( !open_vnc_connection ( p_filter ) )
 684     {
 685         msg_Err( p_filter, "Could not connect to vnc host" );
 686         goto exit;
 687     }
 688
 689     if( !handshaking ( p_filter ) )
 690     {
 691         msg_Err( p_filter, "Error occured while handshaking vnc host" );
 692         goto exit;
 693     }
 694
 695     p_sys->b_connection_active = true; /* to enable sending key
 696                                             * and mouse events to host */
 697
 698     /* Create an empty picture for VNC the data */
 699     vlc_mutex_lock( &p_sys->lock );
 700     p_sys->p_pic = picture_New( VLC_FOURCC('Y','U','V','A'),
 701                                 p_sys->i_vnc_width, p_sys->i_vnc_height, VOUT_ASPECT_FACTOR );
 702     if( !p_sys->p_pic )
 703     {
 704         vlc_mutex_unlock( &p_sys->lock );
 705         goto exit;
 706     }
 707         p_sys->i_vnc_pixels = p_sys->i_vnc_width * p_sys->i_vnc_height;
 708
 709     vlc_mutex_unlock( &p_sys->lock );
 710
 711     /* create the update request thread */
 712     p_update_request_thread = vlc_object_create( p_filter,
 713                                                  sizeof( vlc_object_t ) );
 714     vlc_object_attach( p_update_request_thread, p_filter );
 715     if( vlc_thread_create( p_update_request_thread,
 716                            "vnc update request thread",
 717                            update_request_thread, VLC_THREAD_PRIORITY_LOW ) )
 718     {
 719         vlc_object_detach( p_update_request_thread );
 720         vlc_object_release( p_update_request_thread );
 721         msg_Err( p_filter, "cannot spawn vnc update request thread" );
 722         goto exit;
 723     }
 724
 725     /* connection is initialized, now read and handle server messages */
 726     while( vlc_object_alive( p_thread_obj ) )
 727     {
 728         rfbServerToClientMsg msg;
 729         int i_msgSize;
 730
 731         memset( &msg, 0, sizeof(msg) );
 732
 733         if( !read_exact(p_filter, p_sys->i_socket, (char*)&msg, 1 ) )
 734         {
 735             msg_Err( p_filter, "Error while waiting for next server message");
 736             break;
 737         }
 738         switch (msg.type)
 739         {
 740         case rfbFramebufferUpdate:
 741             i_msgSize = sz_rfbFramebufferUpdateMsg;
 742             break;
 743         case rfbSetColourMapEntries:
 744             i_msgSize = sz_rfbSetColourMapEntriesMsg;
 745             break;
 746         case rfbBell:
 747             i_msgSize = sz_rfbBellMsg;
 748             break;
 749         case rfbServerCutText:
 750             i_msgSize = sz_rfbServerCutTextMsg;
 751             break;
 752         case rfbReSizeFrameBuffer:
 753             i_msgSize = sz_rfbReSizeFrameBufferMsg;
 754             break;
 755         default:
 756             i_msgSize = 0;
 757             msg_Err( p_filter, "Invalid message %u received", msg.type );
 758             break;
 759         }
 760
 761         if( i_msgSize <= 0 )
 762             break;
 763
 764         if( --i_msgSize > 0 )
 765         {
 766             if ( !read_exact( p_filter, p_sys->i_socket,
 767                               ((char*)&msg)+1, i_msgSize ) )
 768             {
 769                 msg_Err( p_filter, "Error while reading message of type %u",
 770                          msg.type );
 771                 break;
 772             }
 773         }
 774         process_server_message( p_filter, &msg);
 775     }
 776
 777     msg_Dbg( p_filter, "joining update_request_thread" );
 778     vlc_object_kill( p_update_request_thread );
 779     vlc_thread_join( p_update_request_thread );
 780     vlc_object_detach( p_update_request_thread );
 781     vlc_object_release( p_update_request_thread );
 782     msg_Dbg( p_filter, "released update_request_thread" );
 783
 784 exit:
 785
 786     vlc_mutex_lock( &p_sys->lock );
 787     p_sys->b_connection_active = false;
 788
 789     if (p_sys->i_socket >= 0)
 790         net_Close(p_sys->i_socket);
 791
 792     if( p_sys->p_pic )
 793         picture_Release( p_sys->p_pic );
 794
 795     /* It will hide the subtitle */
 796     p_sys->b_continue = false;
 797     p_sys->b_need_update = true;
 798     vlc_mutex_unlock( &p_sys->lock );
 799
 800     msg_Dbg( p_filter, "VNC message reader thread ended" );
 801     vlc_restorecancel (canc);
 802     return NULL;
 803 }
 804
 805 static void* update_request_thread( vlc_object_t *p_thread_obj )
 806 {
 807     filter_t* p_filter = (filter_t*)(p_thread_obj->p_parent);
 808     filter_sys_t *p_sys = p_filter->p_sys;
 809     int canc = vlc_savecancel ();
 810
 811     msg_Dbg( p_filter, "VNC update request thread started" );
 812
 813     rfbFramebufferUpdateRequestMsg udr;
 814     udr.type = rfbFramebufferUpdateRequest;
 815     udr.incremental = 0;
 816     udr.x = 0;
 817     udr.y = 0;
 818     udr.w = htons(p_sys->i_vnc_width);
 819     udr.h = htons(p_sys->i_vnc_height);
 820
 821     if( write_exact(p_filter, p_sys->i_socket, (char*)&udr,
 822            sz_rfbFramebufferUpdateRequestMsg) == false)
 823     {
 824         msg_Err( p_filter, "Could not write rfbFramebufferUpdateRequestMsg." );
 825         p_sys->b_continue = false;
 826         return NULL;
 827     }
 828
 829     udr.incremental = 1;
 830     mtime_t i_poll_interval_microsec = p_sys->i_vnc_poll_interval * 1000;
 831
 832     if( p_sys->b_vnc_poll)
 833     {
 834         while( vlc_object_alive( p_thread_obj ) )
 835         {
 836             msleep( i_poll_interval_microsec );
 837             if( write_exact(p_filter, p_sys->i_socket, (char*)&udr,
 838                    sz_rfbFramebufferUpdateRequestMsg) == false)
 839             {
 840                 msg_Err( p_filter, "Could not write rfbFramebufferUpdateRequestMsg." );
 841                 break;
 842             }
 843         }
 844         p_sys->b_continue = false;
 845     }
 846     else
 847     {
 848         msg_Dbg( p_filter, "VNC polling disabled." );
 849     }
 850
 851     msg_Dbg( p_filter, "VNC update request thread ended" );
 852     vlc_restorecancel (canc);
 853     return NULL;
 854 }
 855
 856 static bool process_server_message ( filter_t *p_filter,
 857                                      rfbServerToClientMsg *msg )
 858 {
 859     filter_sys_t *p_sys = p_filter->p_sys;
 860
 861     switch (msg->type)
 862     {
 863     case rfbFramebufferUpdate:
 864         {
 865             msg->fu.nRects = htons(msg->fu.nRects);
 866             rfbFramebufferUpdateRectHeader hdr;
 867
 868             for (int i_rect = 0; i_rect < msg->fu.nRects; i_rect++)
 869             {
 870                 if (!read_exact(p_filter, p_sys->i_socket, (char*)&hdr,
 871                     sz_rfbFramebufferUpdateRectHeader ) )
 872                 {
 873                     msg_Err( p_filter, "Could not read FrameBufferUpdate header" );
 874                     return false;
 875                 }
 876                 hdr.r.x = htons(hdr.r.x);
 877                 hdr.r.y = htons(hdr.r.y);
 878                 hdr.r.w = htons(hdr.r.w);
 879                 hdr.r.h = htons(hdr.r.h);
 880                 hdr.encoding = htonl(hdr.encoding);
 881
 882                 switch (hdr.encoding)
 883                 {
 884                 case rfbEncodingRaw:
 885                     {
 886                         int i_line;
 887                         for (i_line = 0; i_line < hdr.r.h; i_line++)
 888                         {
 889                             if ( !read_exact( p_filter, p_sys->i_socket,
 890                                     p_sys->read_buffer, hdr.r.w ) )
 891                             {
 892                                 msg_Err( p_filter,
 893                                  "Could not read FrameBufferUpdate line data" );
 894                                return false;
 895                             }
 896                             vlc_mutex_lock( &p_sys->lock );
 897                             if ( !raw_line( p_sys, hdr.r.x,
 898                                             hdr.r.y + i_line,
 899                                             hdr.r.w ) )
 900                             {
 901                                 msg_Err( p_filter, "raw_line failed." );
 902                                 vlc_mutex_unlock( &p_sys->lock );
 903                                 return false;
 904                             }
 905                             vlc_mutex_unlock( &p_sys->lock );
 906                         }
 907                     }
 908                     break;
 909
 910                 case rfbEncodingCopyRect:
 911                     {
 912                         rfbCopyRect rect;
 913
 914                         if ( !read_exact( p_filter, p_sys->i_socket,
 915                                           (char*)&rect,
 916                                           sz_rfbCopyRect ) )
 917                         {
 918                             msg_Err( p_filter, "Could not read rfbCopyRect" );
 919                             return false;
 920                         }
 921                         rect.srcX = htons( rect.srcX );
 922                         rect.srcY = htons( rect.srcY );
 923
 924                         vlc_mutex_lock( &p_sys->lock );
 925                         if ( !copy_rect( p_sys,
 926                                          hdr.r.x,   hdr.r.y,
 927                                          hdr.r.w,   hdr.r.h,
 928                                          rect.srcX, rect.srcY ) )
 929                         {
 930                             msg_Err( p_filter, "copy_rect failed." );
 931                             vlc_mutex_unlock( &p_sys->lock );
 932                             return false;
 933                         }
 934                         vlc_mutex_unlock( &p_sys->lock );
 935                     }
 936                     break;
 937
 938                 case rfbEncodingRRE:
 939                     {
 940                         rfbRREHeader rrehdr;
 941                         if ( !read_exact( p_filter, p_sys->i_socket,
 942                                           (char*)&rrehdr,
 943                                           sz_rfbRREHeader ) )
 944                         {
 945                             msg_Err( p_filter, "Could not read rfbRREHeader" );
 946                             return false;
 947                         }
 948                         uint8_t i_pixcolor;
 949                         if ( !read_exact(p_filter, p_sys->i_socket,
 950                                          (char*)&i_pixcolor, 1 ) )
 951                         {
 952                             msg_Err( p_filter, "Could not read RRE pixcolor" );
 953                             return false;
 954                         }
 955
 956                         vlc_mutex_lock( &p_sys->lock );
 957                         if ( !fill_rect( p_sys,
 958                                         hdr.r.x, hdr.r.y,
 959                                         hdr.r.w, hdr.r.h,
 960                                         i_pixcolor) )
 961                         {
 962                             msg_Err( p_filter, "main fill_rect failed." );
 963                             vlc_mutex_unlock( &p_sys->lock );
 964                             return false;
 965                         }
 966                         vlc_mutex_unlock( &p_sys->lock );
 967
 968                         rrehdr.nSubrects = htonl(rrehdr.nSubrects);
 969
 970                         int i_datasize = rrehdr.nSubrects *
 971                                      ( sizeof(i_pixcolor) + sz_rfbRectangle ) ;
 972                         if ( i_datasize > READ_BUFFER_SIZE )
 973                         {
 974                             msg_Err( p_filter, "Buffer too small, "
 975                                      "need %u bytes", i_datasize );
 976                             return false;
 977                         }
 978                         if ( !read_exact( p_filter, p_sys->i_socket,
 979                                        p_sys->read_buffer, i_datasize ) )
 980                         {
 981                             msg_Err( p_filter,
 982                                      "Could not read RRE subrect data" );
 983                             return false;
 984                         }
 985
 986                         uint32_t i_subrect;
 987                         rfbRectangle* p_subrect;
 988                         int i_offset = 0;
 989                         vlc_mutex_lock( &p_sys->lock );
 990                         for ( i_subrect = 0;
 991                               i_subrect < rrehdr.nSubrects; i_subrect++)
 992                         {
 993                             i_pixcolor = p_sys->read_buffer[i_offset];
 994                             i_offset += sizeof(i_pixcolor);
 995                             p_subrect =
 996                                (rfbRectangle*)(p_sys->read_buffer + i_offset);
 997                             i_offset += sz_rfbRectangle;
 998
 999                             if (!fill_rect( p_sys,
1000                                             htons(p_subrect->x) + hdr.r.x,
1001                                             htons(p_subrect->y) + hdr.r.y,
1002                                             htons(p_subrect->w),
1003                                             htons(p_subrect->h),
1004                                             i_pixcolor) )
1005                             {
1006                                 msg_Err( p_filter,
1007                                     "subrect %u fill_rect failed.", i_subrect );
1008                                 vlc_mutex_unlock( &p_sys->lock );
1009                                 return false;
1010                             }
1011                         }
1012                         vlc_mutex_unlock( &p_sys->lock );
1013                     }
1014                     break;
1015
1016                 }
1017
1018             }
1019             vlc_mutex_lock( &p_sys->lock );
1020             p_sys->b_need_update = true;
1021             vlc_mutex_unlock( &p_sys->lock );
1022         }
1023         return true;
1024
1025     case rfbSetColourMapEntries:
1026         {
1027             msg->scme.nColours = htons(msg->scme.nColours);
1028             msg->scme.firstColour = htons(msg->scme.firstColour);
1029             int i_datasize;
1030             if ( p_sys->b_alpha_from_vnc == true )
1031             {
1032                 i_datasize = 2 * msg->scme.nColours * 4;
1033             }
1034             else
1035             {
1036                 i_datasize = 2 * msg->scme.nColours * 3;
1037             }
1038             if ( i_datasize > READ_BUFFER_SIZE )
1039             {
1040                 msg_Err( p_filter, "Buffer too small, need %u bytes",
1041                                    i_datasize );
1042                 return false;
1043             }
1044
1045             if ( !read_exact( p_filter, p_sys->i_socket,
1046                               p_sys->read_buffer, i_datasize ) )
1047             {
1048                 msg_Err( p_filter, "Could not read color map data" );
1049                 return false;
1050             }
1051
1052             uint8_t i_red, i_green, i_blue, i_alpha, i_color_index;
1053             uint16_t i_offset = 0;
1054             i_alpha = 255;
1055
1056             for (int i = 0; i < msg->scme.nColours; i++)
1057             {
1058                 i_color_index = i+msg->scme.firstColour;
1059                 if ( p_sys->b_alpha_from_vnc == true )
1060                 {
1061                     i_alpha = p_sys->read_buffer[i_offset];
1062                     i_offset += 2;
1063                 }
1064                 i_red   = p_sys->read_buffer[i_offset];
1065                 i_offset += 2;
1066                 i_green = p_sys->read_buffer[i_offset];
1067                 i_offset += 2;
1068                 i_blue  = p_sys->read_buffer[i_offset];
1069                 i_offset += 2;
1070                 rgb_to_yuv( &p_sys->ar_color_table_yuv[i_color_index][0],
1071                             &p_sys->ar_color_table_yuv[i_color_index][1],
1072                             &p_sys->ar_color_table_yuv[i_color_index][2],
1073                             i_red,
1074                             i_green,
1075                             i_blue );
1076                 p_sys->ar_color_table_yuv[i][3] = i_alpha;
1077             }
1078         }
1079         return true;
1080
1081     case rfbBell:
1082         msg_Err( p_filter, "rfbBell received" );
1083         return true;
1084
1085     case rfbServerCutText:
1086         msg->sct.length = htons(msg->sct.length);
1087         if ( msg->sct.length > READ_BUFFER_SIZE )
1088         {
1089             msg_Err( p_filter, "Buffer too small, need %u bytes", msg->sct.length );
1090             return false;
1091         }
1092         if ( !read_exact(p_filter, p_sys->i_socket,
1093                          p_sys->read_buffer, msg->sct.length ) )
1094         {
1095             msg_Err( p_filter, "Could not read Reading rfbServerCutText data" );
1096             return false;
1097         }
1098         return true;
1099
1100     case rfbReSizeFrameBuffer:
1101         msg_Err( p_filter, "Reading rfbReSizeFrameBuffer not implemented" );
1102         return false;
1103
1104     default:
1105         msg_Err( p_filter, "Invalid message %u received", msg->type );
1106         return false;
1107     }
1108     return false;
1109 }
1110
1111 /****************************************************************************
1112  * Filter: the whole thing
1113  ****************************************************************************
1114  * This function outputs subpictures at regular time intervals.
1115  ****************************************************************************/
1116 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
1117 {
1118     filter_sys_t *p_sys = p_filter->p_sys;
1119     subpicture_t *p_spu;
1120     subpicture_region_t *p_region;
1121     video_format_t fmt;
1122     picture_t *p_pic;
1123
1124     if( !p_sys->b_need_update )
1125     {
1126         return NULL;
1127     }
1128
1129     vlc_mutex_lock( &p_sys->lock );
1130
1131     p_pic = p_sys->p_pic;
1132
1133     if( !p_pic )
1134     {
1135         vlc_mutex_unlock( &p_sys->lock );
1136         return NULL;
1137     }
1138
1139     /* Allocate the subpicture internal data. */
1140     p_spu = filter_NewSubpicture( p_filter );
1141     if( !p_spu )
1142     {
1143         vlc_mutex_unlock( &p_sys->lock );
1144         return NULL;
1145     }
1146
1147     p_spu->b_absolute = false;
1148     p_spu->i_start = date;
1149     p_spu->i_stop = 0;
1150     p_spu->b_ephemer = true;
1151
1152     if( !p_sys->b_continue )
1153         p_spu->i_stop = p_spu->i_start + 1;
1154
1155     /* Create new SPU region */
1156     memset( &fmt, 0, sizeof(video_format_t) );
1157     fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
1158     fmt.i_aspect = VOUT_ASPECT_FACTOR;
1159     fmt.i_sar_num = fmt.i_sar_den = 1;
1160     fmt.i_width = fmt.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
1161     fmt.i_height = fmt.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
1162     fmt.i_x_offset = fmt.i_y_offset = 0;
1163     p_region = subpicture_region_New( &fmt );
1164     if( !p_region )
1165     {
1166         msg_Err( p_filter, "cannot allocate SPU region" );
1167         p_filter->pf_sub_buffer_del( p_filter, p_spu );
1168         vlc_mutex_unlock( &p_sys->lock );
1169         return NULL;
1170     }
1171
1172     /* FIXME the copy is probably not needed anymore */
1173     picture_Copy( p_region->p_picture, p_pic );
1174
1175     p_sys->b_need_update = false;
1176
1177     vlc_mutex_unlock( &p_sys->lock );
1178
1179     /* set to one of the 9 relative locations */
1180     p_region->i_align = 0; /* Center */
1181     p_spu->b_absolute = false;
1182
1183
1184     p_spu->i_original_picture_width = 0; /*Let vout core do the horizontal scaling */
1185     p_spu->i_original_picture_height = fmt.i_height;
1186
1187     p_spu->p_region = p_region;
1188
1189     p_spu->i_alpha = ( p_sys->i_alpha );
1190
1191     return p_spu;
1192 }
1193
1194
1195 static inline void rgb_to_yuv( uint8_t *y, uint8_t *u, uint8_t *v,
1196                                int r, int g, int b )
1197 {
1198     *y = ( ( (  66 * r + 129 * g +  25 * b + 128 ) >> 8 ) + 16 );
1199     *u =   ( ( -38 * r -  74 * g + 112 * b + 128 ) >> 8 ) + 128 ;
1200     *v =   ( ( 112 * r -  94 * g -  18 * b + 128 ) >> 8 ) + 128 ;
1201 }
1202
1203 static inline bool fill_rect( filter_sys_t* p_sys,
1204                               uint16_t i_x, uint16_t i_y,
1205                               uint16_t i_w, uint16_t i_h,
1206                               uint8_t i_color)
1207 {
1208     plane_t *p_outY = p_sys->p_pic->p+Y_PLANE;
1209     plane_t *p_outU = p_sys->p_pic->p+U_PLANE;
1210     plane_t *p_outV = p_sys->p_pic->p+V_PLANE;
1211     plane_t *p_outA = p_sys->p_pic->p+A_PLANE;
1212     int i_pitch = p_outY->i_pitch;
1213     int i_lines = p_outY->i_lines;
1214     if ( i_x + i_w > i_pitch)
1215         return false;
1216     if ( i_y + i_h > i_lines)
1217         return false;
1218     int i_line_offset = i_y * i_pitch;
1219     uint8_t i_yuv_y = p_sys->ar_color_table_yuv[i_color][0];
1220     uint8_t i_yuv_u = p_sys->ar_color_table_yuv[i_color][1];
1221     uint8_t i_yuv_v = p_sys->ar_color_table_yuv[i_color][2];
1222     uint8_t i_alpha = p_sys->ar_color_table_yuv[i_color][3];
1223     for( int i_line = 0; i_line < i_h; i_line++ )
1224     {
1225         for( int i_column = 0; i_column < i_w; i_column++ )
1226         {
1227             int i_total_offset = i_line_offset + i_x + i_column;
1228             p_outY->p_pixels[ i_total_offset ] = i_yuv_y;
1229             p_outU->p_pixels[ i_total_offset ] = i_yuv_u;
1230             p_outV->p_pixels[ i_total_offset ] = i_yuv_v;
1231             p_outA->p_pixels[ i_total_offset ] = i_alpha;
1232         }
1233         i_line_offset += i_pitch;
1234     }
1235     return true;
1236 }
1237
1238 static inline bool copy_rect( filter_sys_t* p_sys,
1239                               uint16_t i_x, uint16_t i_y,
1240                               uint16_t i_w, uint16_t i_h,
1241                               uint16_t i_sx, uint16_t i_sy )
1242 {
1243     plane_t *p_Y = p_sys->p_pic->p+Y_PLANE;
1244     plane_t *p_U = p_sys->p_pic->p+U_PLANE;
1245     plane_t *p_V = p_sys->p_pic->p+V_PLANE;
1246     plane_t *p_A = p_sys->p_pic->p+A_PLANE;
1247
1248     int i_pitch = p_Y->i_pitch;
1249     int i_lines = p_Y->i_lines;
1250
1251     fprintf( stderr, "copy_rect: (%d,%d)+(%d,%d) -> (%d,%d)\n", i_x, i_y, i_w, i_h, i_sx, i_sy );
1252
1253     if( i_x + i_w > i_pitch || i_sx + i_w > i_pitch )
1254         return false;
1255     if( i_y + i_h > i_lines || i_sy + i_h > i_lines)
1256         return false;
1257
1258     if( i_w <= 0 || i_h <= 0 )
1259         return true;
1260
1261     uint8_t *pb_buffer = calloc( i_w * i_h, 4 );
1262     if( !pb_buffer )
1263         return false;
1264
1265     for( int i_line = 0; i_line < i_h; i_line++ )
1266     {
1267         for( int i_column = 0; i_column < i_w; i_column++ )
1268         {
1269             const int i_src_offset = ( i_sy + i_line ) * i_pitch + i_sx + i_column;
1270             const int i_tmp_offset = (    0 + i_line ) *     i_w +    0 + i_column;
1271
1272             pb_buffer[4*i_tmp_offset + 0] = p_Y->p_pixels[i_src_offset];
1273             pb_buffer[4*i_tmp_offset + 1] = p_U->p_pixels[i_src_offset];
1274             pb_buffer[4*i_tmp_offset + 2] = p_V->p_pixels[i_src_offset];
1275             pb_buffer[4*i_tmp_offset + 3] = p_A->p_pixels[i_src_offset];
1276         }
1277     }
1278
1279     for( int i_line = 0; i_line < i_h; i_line++ )
1280     {
1281         for( int i_column = 0; i_column < i_w; i_column++ )
1282         {
1283             const int i_tmp_offset = (   0 + i_line ) *     i_w +   0 + i_column;
1284             const int i_dst_offset = ( i_y + i_line ) * i_pitch + i_x + i_column;
1285
1286             p_Y->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 0];
1287             p_U->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 1];
1288             p_V->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 2];
1289             p_A->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 3];
1290         }
1291     }
1292     free( pb_buffer );
1293     return true;
1294
1295 }
1296
1297 static inline bool raw_line(  filter_sys_t* p_sys,
1298                               uint16_t i_x, uint16_t i_y,
1299                               uint16_t i_w )
1300 {
1301     plane_t *p_outY = p_sys->p_pic->p+Y_PLANE;
1302     plane_t *p_outU = p_sys->p_pic->p+U_PLANE;
1303     plane_t *p_outV = p_sys->p_pic->p+V_PLANE;
1304     plane_t *p_outA = p_sys->p_pic->p+A_PLANE;
1305     int i_pitch = p_outY->i_pitch;
1306     int i_lines = p_outY->i_lines;
1307     if ( i_x + i_w > i_pitch)
1308         return false;
1309     if ( i_y > i_lines)
1310         return false;
1311
1312     int i_line_offset = i_y * i_pitch + i_x;
1313
1314     for( int i_column = 0; i_column < i_w; i_column++ )
1315     {
1316         int i_offset = i_line_offset + i_column;
1317         uint8_t i_color = p_sys->read_buffer[i_column];
1318         p_outY->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][0];
1319         p_outU->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][1];
1320         p_outV->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][2];
1321         p_outA->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][3];
1322     }
1323
1324     return true;
1325 }
1326
1327
1328 /*****************************************************************************
1329  * MouseEvent: callback for mouse events
1330  *****************************************************************************/
1331 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
1332                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1333 {
1334     VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1335
1336     filter_t *p_filter = (filter_t *)p_data;
1337     filter_sys_t *p_sys = p_filter->p_sys;
1338
1339     if( !p_sys->b_vnc_mouse_events )
1340         return VLC_SUCCESS;
1341
1342     vout_thread_t *p_vout = (vout_thread_t*)p_sys->p_vout;
1343     int i_x, i_y;
1344     int i_v;
1345
1346
1347     i_v = var_GetInteger( p_sys->p_vout, "mouse-button-down" );
1348     i_y = var_GetInteger( p_sys->p_vout, "mouse-y" );
1349     i_x = var_GetInteger( p_sys->p_vout, "mouse-x" );
1350
1351     vlc_mutex_lock( &p_sys->lock );
1352
1353     const int v_h = p_vout->fmt_in.i_visible_height;
1354     const int v_w = p_sys->i_vnc_width * v_h / p_sys->i_vnc_height;
1355     const int v_x = (p_vout->fmt_in.i_visible_width-v_w)/2;
1356
1357     i_x -= v_x;
1358
1359     if( i_y < 0 || i_x < 0 || i_y >= v_h || i_x >= v_w )
1360     {
1361         vlc_mutex_unlock( &p_sys->lock );
1362         msg_Dbg( p_this, "invalid mouse event? x=%d y=%d btn=%x", i_x, i_y, i_v );
1363         return VLC_SUCCESS;
1364     }
1365     if( !p_sys->b_connection_active )
1366     {
1367         vlc_mutex_unlock( &p_sys->lock );
1368         return VLC_SUCCESS;
1369     }
1370
1371 #ifdef VNC_DEBUG
1372     msg_Dbg( p_this, "mouse event x=%d y=%d btn=%x", i_x, i_y, i_v );
1373 #endif
1374
1375     /* */
1376     i_x = i_x * p_sys->i_vnc_width / v_w;
1377     i_y = i_y * p_sys->i_vnc_height / v_h;
1378
1379     /* buttonMask bits 0-7 are buttons 1-8, 0=up, 1=down */
1380     rfbPointerEventMsg ev;
1381     ev.type = rfbPointerEvent;
1382     ev.buttonMask = i_v;
1383     ev.x = htons(i_x);
1384     ev.y = htons(i_y);
1385
1386     write_exact( p_filter, p_sys->i_socket,
1387                  (char*)&ev, sz_rfbPointerEventMsg);
1388
1389     vlc_mutex_unlock( &p_sys->lock );
1390
1391     return VLC_SUCCESS;
1392 }
1393
1394 /*****************************************************************************
1395  * KeyEvent: callback for keyboard events
1396  *****************************************************************************/
1397 static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
1398                      vlc_value_t oldval, vlc_value_t newval, void *p_data )
1399 {
1400     VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
1401
1402     filter_t *p_filter = (filter_t *)p_data;
1403     filter_sys_t *p_sys = p_filter->p_sys;
1404
1405     if( !p_sys->b_vnc_key_events )
1406         return VLC_SUCCESS;
1407
1408     msg_Dbg( p_this, "key pressed (%d) ", newval.i_int );
1409
1410     if ( !newval.i_int )
1411     {
1412         msg_Err( p_this, "Received invalid key event %d", newval.i_int );
1413         return VLC_EGENERIC;
1414     }
1415
1416     vlc_mutex_lock( &p_sys->lock );
1417     if( !p_sys->b_connection_active )
1418     {
1419         vlc_mutex_unlock( &p_sys->lock );
1420         return VLC_SUCCESS;
1421     }
1422
1423     uint32_t i_key32 = newval.i_int;
1424     i_key32 = htonl(i_key32);
1425     rfbKeyEventMsg ev;
1426
1427     ev.type = rfbKeyEvent;
1428     ev.down = 1;
1429     ev.pad = 0;
1430
1431     /* first key-down for modifier-keys */
1432     if (newval.i_int & KEY_MODIFIER_CTRL)
1433     {
1434         ev.key = 0xffe3;
1435         write_exact( p_filter, p_sys->i_socket,
1436                      (char*)&ev, sz_rfbKeyEventMsg);
1437     }
1438     if (newval.i_int & KEY_MODIFIER_SHIFT)
1439     {
1440         ev.key = 0xffe1;
1441         write_exact( p_filter, p_sys->i_socket,
1442                      (char*)&ev, sz_rfbKeyEventMsg);
1443     }
1444     if (newval.i_int & KEY_MODIFIER_ALT)
1445     {
1446         ev.key = 0xffe9;
1447         write_exact( p_filter, p_sys->i_socket,
1448                      (char*)&ev, sz_rfbKeyEventMsg);
1449     }
1450
1451     /* then key-down for the pressed key */
1452     ev.key = i_key32;
1453     write_exact( p_filter, p_sys->i_socket,
1454                  (char*)&ev, sz_rfbKeyEventMsg);
1455
1456     ev.down = 0;
1457
1458     /* then key-up for the pressed key */
1459     write_exact( p_filter, p_sys->i_socket,
1460                  (char*)&ev, sz_rfbKeyEventMsg);
1461
1462     /* last key-down for modifier-keys */
1463     if (newval.i_int & KEY_MODIFIER_CTRL)
1464     {
1465         ev.key = 0xffe3;
1466         write_exact( p_filter, p_sys->i_socket,
1467                      (char*)&ev, sz_rfbKeyEventMsg);
1468     }
1469     if (newval.i_int & KEY_MODIFIER_SHIFT)
1470     {
1471         ev.key = 0xffe1;
1472         write_exact( p_filter, p_sys->i_socket,
1473                      (char*)&ev, sz_rfbKeyEventMsg);
1474     }
1475     if (newval.i_int & KEY_MODIFIER_ALT)
1476     {
1477        ev.key = 0xffe9;
1478        write_exact( p_filter, p_sys->i_socket,
1479                     (char*)&ev, sz_rfbKeyEventMsg);
1480     }
1481     vlc_mutex_unlock( &p_sys->lock );
1482
1483     return VLC_SUCCESS;
1484 }
1485
1486 static void vnc_encrypt_bytes( unsigned char *bytes, char *passwd )
1487 {
1488     unsigned char key[8];
1489     unsigned int i;
1490
1491     for (i = 0; i < 8; i++)
1492         key[i] = i < strlen( passwd ) ? passwd[i] : '\0';
1493
1494     gcry_cipher_hd_t ctx;
1495     gcry_cipher_open( &ctx, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB,0);
1496
1497     /* reverse bits of the key */
1498     for( i = 0 ; i < 8 ; i ++ )
1499         key[i] =
1500             (key[i] >> 7) +
1501             (((key[i] >> 6) & 0x01 ) << 1 ) +
1502             (((key[i] >> 5) & 0x01 ) << 2 ) +
1503             (((key[i] >> 4) & 0x01 ) << 3 ) +
1504             (((key[i] >> 3) & 0x01 ) << 4 ) +
1505             (((key[i] >> 2) & 0x01 ) << 5 ) +
1506             (((key[i] >> 1) & 0x01 ) << 6 ) +
1507             ((key[i] & 0x01) << 7 );
1508
1509     gcry_cipher_setkey( ctx, key, 8 );
1510     gcry_cipher_encrypt( ctx, bytes, CHALLENGESIZE, bytes, CHALLENGESIZE );
1511     gcry_cipher_close( ctx );
1512 }
1513