remoteosd.c 49.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
/*****************************************************************************
 * remoteosd.c: remote osd over vnc filter module
 *****************************************************************************
 * Copyright (C) 2007-2008 Matthias Bauer
 * $Id$
 *
 * Authors: Matthias Bauer <matthias dot bauer #_at_# gmx dot ch>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implid warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/*****************************************************************************
 * RemoteOSD uses the RFB-Protocol of VNC to display an On-Screen-Display
 * menu generated by a streaming server as overlay for the streamed video.
 *
 * The streaming server that implements this is the ffnetdev plugin for VDR.
 * VDR (VideoDiskRecorder) is an Linux based OpenSource harddisk recorder
 * software.
 * The VDR ffnetdev plugin emulates the hardware MPEG decoder and streams the
 * video over the network instead of hardware video outputs.
 * The OSD menu of VDR is offered with the RFB protocol to a VNC client.
 *
 * In fact this video-filter is a simple VNC client that could be also used to
 * connect to a real VNC host.
 * Only 8-bit color is supported at the moment.
 * Using password protected VNC hosts is supported but not recommended, because
 * you need to insert the used password in the plugin configuration page of
 * VLC configuration in plain text and it's saved in plain text.
 *****************************************************************************/

//#define VNC_DEBUG

/*****************************************************************************
 * Preamble
 *****************************************************************************/

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_vout.h>

Rémi Duraffort's avatar
Rémi Duraffort committed
57 58 59
#include <vlc_filter.h>
#include <vlc_image.h>
#include <vlc_keys.h>
60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77

#include <vlc_network.h>
#include <gcrypt.h>              /* to encrypt password */
#include <vlc_gcrypt.h>

#include "remoteosd_rfbproto.h" /* type definitions of the RFB protocol for VNC */

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
#define READ_BUFFER_SIZE 1000000

#define RMTOSD_HOST_TEXT N_("VNC Host")
#define RMTOSD_HOST_LONGTEXT N_( \
    "VNC hostname or IP address." )

#define RMTOSD_PORT_TEXT N_("VNC Port")
#define RMTOSD_PORT_LONGTEXT N_( \
Christophe Mutricy's avatar
Typos  
Christophe Mutricy committed
78
    "VNC port number." )
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112

#define RMTOSD_PASSWORD_TEXT N_("VNC Password")
#define RMTOSD_PASSWORD_LONGTEXT N_( \
    "VNC password." )

#define RMTOSD_UPDATE_TEXT N_("VNC poll interval" )
#define RMTOSD_UPDATE_LONGTEXT N_( \
    "In this interval an update from VNC is requested, default every 300 ms. ")

#define RMTOSD_POLL_TEXT N_("VNC polling")
#define RMTOSD_POLL_LONGTEXT N_( \
    "Activate VNC polling. Do NOT activate for use as VDR ffnetdev client." )

#define RMTOSD_MOUSE_TEXT N_("Mouse events")
#define RMTOSD_MOUSE_LONGTEXT N_( \
    "Send mouse events to VNC host. Not needed for use as VDR ffnetdev client." )

#define RMTOSD_KEYS_TEXT N_("Key events")
#define RMTOSD_KEYS_LONGTEXT N_( \
    "Send key events to VNC host." )

#define RMTOSD_ALPHA_TEXT N_("Alpha transparency value (default 255)")
#define RMTOSD_ALPHA_LONGTEXT N_( \
    "The transparency of the OSD VNC can be changed by giving a value " \
    "between 0 and 255. A lower value specifies more transparency a higher " \
    "means less transparency. The default is being not transparent " \
    "(value 255) the minimum is fully transparent (value 0)." )

#define RMTOSD_CFG "rmtosd-"

#define RMTOSD_UPDATE_MIN     200
#define RMTOSD_UPDATE_DEFAULT 1000
#define RMTOSD_UPDATE_MAX     300

113 114
static int  CreateFilter ( vlc_object_t * );
static void DestroyFilter( vlc_object_t * );
115

116 117
vlc_module_begin ()
    set_description( N_("Remote-OSD over VNC") )
118
    set_capability( "sub source", 100 )
119 120 121 122 123
    set_shortname( N_("Remote-OSD") )
    set_category( CAT_VIDEO )
    set_subcategory( SUBCAT_VIDEO_SUBPIC )
    add_shortcut( "rmtosd" )
    set_callbacks( CreateFilter, DestroyFilter )
124

125
    add_string( RMTOSD_CFG "host", "myvdr", RMTOSD_HOST_TEXT,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
126
        RMTOSD_HOST_LONGTEXT, false )
127
    add_integer_with_range( RMTOSD_CFG "port", 20001, 1, 0xFFFF, NULL,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
128
        RMTOSD_PORT_TEXT, RMTOSD_PORT_LONGTEXT, false )
129
    add_password( RMTOSD_CFG "password", "", RMTOSD_PASSWORD_TEXT,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
130
        RMTOSD_PASSWORD_LONGTEXT, false )
131 132
    add_integer_with_range( RMTOSD_CFG "update", RMTOSD_UPDATE_DEFAULT,
        RMTOSD_UPDATE_MIN, RMTOSD_UPDATE_MAX, NULL, RMTOSD_UPDATE_TEXT,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
133
        RMTOSD_UPDATE_LONGTEXT, true )
134
    add_bool( RMTOSD_CFG "vnc-polling", false,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
135
              RMTOSD_POLL_TEXT , RMTOSD_POLL_LONGTEXT, false )
136
    add_bool( RMTOSD_CFG "mouse-events", false,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
137
              RMTOSD_MOUSE_TEXT , RMTOSD_MOUSE_LONGTEXT, false )
138
    add_bool( RMTOSD_CFG "key-events", false,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
139
              RMTOSD_KEYS_TEXT , RMTOSD_KEYS_LONGTEXT, false )
140
    add_integer_with_range( RMTOSD_CFG "alpha", 255, 0, 255, NULL,
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
141
        RMTOSD_ALPHA_TEXT, RMTOSD_ALPHA_LONGTEXT, true )
142

143
vlc_module_end ()
144

145 146 147 148 149 150 151

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
#define CHALLENGESIZE 16
#define MAX_VNC_SERVER_NAME_LENGTH 255

152
/* subsource functions */
153 154
static subpicture_t *Filter( filter_t *, mtime_t );

155 156 157 158
static int MouseEvent( filter_t *,
                       const vlc_mouse_t *,
                       const vlc_mouse_t *,
                       const video_format_t * );
159 160 161 162 163 164

static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
                     vlc_value_t oldval, vlc_value_t newval, void *p_data );

static void stop_osdvnc ( filter_t *p_filter );

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 );
168 169 170 171 172 173 174 175 176 177 178 179 180 181 182

static bool open_vnc_connection ( filter_t *p_filter );

static bool handshaking ( filter_t *p_filter );

static bool process_server_message ( filter_t *p_filter,
                                     rfbServerToClientMsg *msg );

static inline void rgb_to_yuv( uint8_t *y, uint8_t *u, uint8_t *v,
                               int r, int g, int b );

static inline bool fill_rect( filter_sys_t* p_sys,
                              uint16_t i_x, uint16_t i_y,
                              uint16_t i_w, uint16_t i_h,
                              uint8_t i_color );
183 184 185 186 187
static inline bool copy_rect( filter_sys_t* p_sys,
                              uint16_t i_x, uint16_t i_y,
                              uint16_t i_w, uint16_t i_h,
                              uint16_t i_sx, uint16_t i_sy );

188 189 190 191 192 193 194 195

static inline bool raw_line(  filter_sys_t* p_sys,
                              uint16_t i_x, uint16_t i_y,
                              uint16_t i_w );

static void vnc_encrypt_bytes( unsigned char *bytes, char *passwd );


196
/*****************************************************************************
197
 * Sub source code
198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251
 *****************************************************************************/

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
struct filter_sys_t
{
    bool          b_need_update;       /* VNC picture is updated, do update the OSD*/
    mtime_t       i_vnc_poll_interval; /* Update the OSD menu every n ms */

    uint8_t       i_alpha;             /* alpha transparency value */

    char          *psz_host;           /* VNC host */
    int           i_port;

    char          *psz_passwd;         /* VNC password */

    bool          b_vnc_poll;          /* Activate VNC polling ? */
    bool          b_vnc_mouse_events;  /* Send MouseEvents ? */
    bool          b_vnc_key_events;    /* Send KeyEvents ? */

    bool          b_connection_active; /* Handshaking finished ? */

    vlc_mutex_t   lock;                /* To lock for read/write on picture */

    picture_t     *p_pic;              /* The picture with OSD data from VNC */

    int           i_socket;            /* Socket used for VNC */

    uint16_t      i_vnc_width;          /* The with of the VNC screen */
    uint16_t      i_vnc_height;         /* The height of the VNC screen */
	uint32_t      i_vnc_pixels;         /* The pixels of the VNC screen */

    bool    b_alpha_from_vnc;    /* Special ffnetdev alpha feature enabled ? */

    char          read_buffer[READ_BUFFER_SIZE];

    bool          b_continue;

    vlc_object_t* p_worker_thread;

    uint8_t       ar_color_table_yuv[256][4];
};

/*****************************************************************************
 * CreateFilter: Create the filter and open the definition file
 *****************************************************************************/
static int CreateFilter ( vlc_object_t *p_this )
{
    filter_t *p_filter = (filter_t *)p_this;
    filter_sys_t *p_sys = NULL;

    msg_Dbg( p_filter, "Creating vnc osd filter..." );

252
    p_filter->p_sys = p_sys = calloc( 1, sizeof(*p_sys) );
253 254 255 256 257 258 259
    if( !p_filter->p_sys )
        return VLC_ENOMEM;

    /* Populating struct */
    vlc_mutex_init( &p_sys->lock );
    p_sys->b_continue = true;
    p_sys->i_socket = -1;
260
    p_sys->p_pic = NULL;
261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279

    p_sys->psz_host = var_CreateGetString( p_this, RMTOSD_CFG "host" );
    if( EMPTY_STR(p_sys->psz_host) )
    {
        msg_Err( p_filter, "unable to get vnc host" );
        goto error;
    }

    p_sys->psz_passwd = var_CreateGetString( p_this, RMTOSD_CFG "password" );
    if( !p_sys->psz_passwd )
    {
        msg_Err( p_filter, "unable to get vnc password" );
        goto error;
    }

    p_sys->i_port = var_CreateGetIntegerCommand( p_this, RMTOSD_CFG "port" );

    p_sys->i_alpha = var_CreateGetIntegerCommand( p_this, RMTOSD_CFG "alpha" );

Pavlov Konstantin's avatar
Pavlov Konstantin committed
280
    /* in milliseconds, 0 disables polling, should not be lower than 100 */
281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305
    p_sys->i_vnc_poll_interval  = var_CreateGetIntegerCommand( p_this,
                                                       RMTOSD_CFG "update" );
    if ( p_sys->i_vnc_poll_interval < 100)
    {
       p_sys->i_vnc_poll_interval = 100;
    }

    for ( int i = 0; i < 256; i++ )
    {
        p_sys->ar_color_table_yuv[i][0] = 255;
        p_sys->ar_color_table_yuv[i][1] = 255;
        p_sys->ar_color_table_yuv[i][2] = 255;
        p_sys->ar_color_table_yuv[i][3] = 255;
    }

    p_sys->b_vnc_poll = var_CreateGetBoolCommand( p_this,
                                            RMTOSD_CFG "vnc-polling" );
    p_sys->b_vnc_mouse_events = var_CreateGetBoolCommand( p_this,
                                            RMTOSD_CFG "mouse-events" );
    p_sys->b_vnc_key_events = var_CreateGetBoolCommand( p_this,
                                            RMTOSD_CFG "key-events" );

    /* Keep track of OSD Events */
    p_sys->b_need_update  = false;

306 307
    /* Attach subpicture source callback */
    p_filter->pf_sub_source = Filter;
308
    p_filter->pf_sub_mouse  = MouseEvent;
309

310
    var_AddCallback( p_filter->p_libvlc, "key-pressed", KeyEvent, p_this );
311

312
    es_format_Init( &p_filter->fmt_out, SPU_ES, VLC_CODEC_SPU );
313 314
    p_filter->fmt_out.i_priority = 0;

315 316
    vlc_gcrypt_init();

317
    /* create the vnc worker thread */
318 319
    p_sys->p_worker_thread = vlc_object_create( p_this,
                                                sizeof( vlc_object_t ) );
320
    vlc_object_attach( p_sys->p_worker_thread, p_this );
321
    if( vlc_thread_create( p_sys->p_worker_thread,
322
                           vnc_worker_thread, VLC_THREAD_PRIORITY_LOW ) )
323 324 325 326 327 328 329 330 331 332 333 334 335 336 337
    {
        vlc_object_release( p_sys->p_worker_thread );
        msg_Err( p_filter, "cannot spawn vnc message reader thread" );
        goto error;
    }

    msg_Dbg( p_filter, "osdvnc filter started" );

    return VLC_SUCCESS;

error:
    msg_Err( p_filter, "osdvnc filter discarded" );

    stop_osdvnc( p_filter );

338
    vlc_mutex_destroy( &p_sys->lock );
339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357
    free( p_sys->psz_host );
    free( p_sys->psz_passwd );
    free( p_sys );

    return VLC_EGENERIC;
}

/*****************************************************************************
 * DestroyFilter: Make a clean exit of this plugin
 *****************************************************************************/
static void DestroyFilter( vlc_object_t *p_this )
{
    filter_t     *p_filter = (filter_t*)p_this;
    filter_sys_t *p_sys = p_filter->p_sys;

    msg_Dbg( p_filter, "DestroyFilter called." );

    stop_osdvnc( p_filter );

358
    var_DelCallback( p_filter->p_libvlc, "key-pressed", KeyEvent, p_this );
359 360 361 362 363 364 365 366 367 368

    var_Destroy( p_this, RMTOSD_CFG "host" );
    var_Destroy( p_this, RMTOSD_CFG "port" );
    var_Destroy( p_this, RMTOSD_CFG "password" );
    var_Destroy( p_this, RMTOSD_CFG "update" );
    var_Destroy( p_this, RMTOSD_CFG "vnc-polling" );
    var_Destroy( p_this, RMTOSD_CFG "mouse-events" );
    var_Destroy( p_this, RMTOSD_CFG "key-events" );
    var_Destroy( p_this, RMTOSD_CFG "alpha" );

369
    vlc_mutex_destroy( &p_sys->lock );
370 371 372 373 374 375 376 377 378
    free( p_sys->psz_host );
    free( p_sys->psz_passwd );
    free( p_sys );
}

static void stop_osdvnc ( filter_t *p_filter )
{
    filter_sys_t *p_sys = p_filter->p_sys;

379 380
    /* It will unlock socket reading */
    vlc_object_kill( p_filter );
381

382 383
    /* */
    if( p_sys->p_worker_thread )
384 385
    {
        msg_Dbg( p_filter, "joining worker_thread" );
386
        vlc_object_kill( p_sys->p_worker_thread );
387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580
        vlc_thread_join( p_sys->p_worker_thread );
        vlc_object_release( p_sys->p_worker_thread );
        msg_Dbg( p_filter, "released worker_thread" );
    }

    msg_Dbg( p_filter, "osdvnc stopped" );
}

static bool read_exact( filter_t *p_filter,
                        int i_socket,
                        char* p_readbuf,
                        int i_bytes )
{
    return i_bytes == net_Read( p_filter, i_socket, NULL,
                                  (unsigned char*)p_readbuf,
                                  i_bytes, true );
}


static bool write_exact( filter_t *p_filter,
                         int i_socket,
                         char* p_writebuf,
                         int i_bytes )
{
    return i_bytes == net_Write( p_filter, i_socket, NULL,
                                  (unsigned char*)p_writebuf, i_bytes );
}

static bool open_vnc_connection ( filter_t *p_filter )
{
    filter_sys_t *p_sys = p_filter->p_sys;

    msg_Dbg( p_filter, "Open socket to vnc server on %s:%u.",
              p_sys->psz_host, p_sys->i_port );

    p_sys->i_socket = net_ConnectTCP( p_filter, p_sys->psz_host, p_sys->i_port );

    if( p_sys->i_socket < 0 )
    {
        msg_Err( p_filter, "Could not open socket" );
        return false;
    }

    msg_Dbg( p_filter, "socket is open." );

    return true;
}

static bool handshaking ( filter_t *p_filter )
{
    filter_sys_t *p_sys = p_filter->p_sys;

    msg_Dbg( p_filter, "Reading protocol version" );

    rfbProtocolVersionMsg pv;
    if ( !read_exact( p_filter, p_sys->i_socket, pv,
                      sz_rfbProtocolVersionMsg ) )
    {
        msg_Err( p_filter, "Could not read version message" );
        return false;
    }
    pv[sz_rfbProtocolVersionMsg] = '\0'; /* pv size is sz_rfbProtocolVersionMsg+1 */

    msg_Dbg( p_filter, "Server version is %s", pv );

    strncpy(pv, "RFB 003.003\n", sz_rfbProtocolVersionMsg);

    if( !write_exact(p_filter, p_sys->i_socket, pv,
                     sz_rfbProtocolVersionMsg) )
    {
        msg_Err( p_filter, "Could not write version message" );
        return false;
    }

    msg_Dbg( p_filter, "Reading authentication scheme" );
    uint32_t i_authScheme;
    if( !read_exact( p_filter, p_sys->i_socket, (char*)&i_authScheme, 4 ) )
    {
        msg_Err( p_filter, "Could not read authentication scheme" );
        return false;
    }
    i_authScheme = htonl(i_authScheme);

    msg_Dbg( p_filter, "Authentication scheme = %x", i_authScheme );
    if ( i_authScheme == rfbConnFailed )
    {
        msg_Err( p_filter, "Connection rejected by server" );
        return false;
    }
    if (i_authScheme == rfbVncAuth)
    {
        unsigned char challenge[CHALLENGESIZE];
        if ( !read_exact( p_filter, p_sys->i_socket,
                          (char*)challenge, CHALLENGESIZE ) )
        {
            msg_Err( p_filter, "Could not read password challenge" );
            return false;
        }

        vnc_encrypt_bytes( challenge, p_sys->psz_passwd );

        if( !write_exact(p_filter, p_sys->i_socket,
                         (char*)challenge, CHALLENGESIZE ) )
        {
            msg_Err( p_filter, "Could not write password" );
            return false;
        }
        uint32_t i_authResult;
        if( !read_exact( p_filter, p_sys->i_socket, (char*)&i_authResult, 4 ) )
        {
            msg_Err( p_filter, "Could not read authentication result" );
            return false;
        }
        i_authResult = htonl(i_authResult);
        if (i_authResult != rfbVncAuthOK)
        {
            msg_Err( p_filter, "VNC authentication failed" );
            return false;
        }
    }

    msg_Dbg( p_filter, "Writing client init message" );
    rfbClientInitMsg ci;
    ci.shared = 1;
    if( !write_exact( p_filter, p_sys->i_socket,
                      (char*)&ci, sz_rfbClientInitMsg ) )
    {
        msg_Err( p_filter, "Could not write client init message" );
        return false;
    }

    msg_Dbg( p_filter, "Reading server init message" );
    rfbServerInitMsg si;
    if( !read_exact( p_filter, p_sys->i_socket,
                     (char*)&si, sz_rfbServerInitMsg ) )
    {
        msg_Err( p_filter, "Could not read server init message" );
        return false;
    }
    si.framebufferWidth = htons(si.framebufferWidth);
    si.framebufferHeight = htons(si.framebufferHeight);
    si.format.redMax = htons(si.format.redMax);
    si.format.greenMax = htons(si.format.greenMax);
    si.format.blueMax = htons(si.format.blueMax);

    p_sys->i_vnc_width = si.framebufferWidth;
    p_sys->i_vnc_height = si.framebufferHeight;

    msg_Dbg( p_filter, "Servers preferred pixelformat: "
                        "%ux%u, R(%u),G(%u),B(%u), %u bit, depht=%u, %s",
                        si.framebufferWidth,
                        si.framebufferHeight,
                        si.format.redMax,
                        si.format.greenMax,
                        si.format.blueMax,
                        si.format.bitsPerPixel,
                        si.format.depth,
                        si.format.trueColour ? "TrueColor" : "Not-TrueColor");

    uint32_t i_nameLength = htonl(si.nameLength);
    if( i_nameLength > MAX_VNC_SERVER_NAME_LENGTH )
    {
        msg_Err( p_filter, "Server name too long" );
        return false;
    }
    char s_ServerName[MAX_VNC_SERVER_NAME_LENGTH+1];

    msg_Dbg( p_filter, "Reading server name with size = %u", i_nameLength );
    if( !read_exact( p_filter, p_sys->i_socket, s_ServerName, i_nameLength ) )
    {
        msg_Err( p_filter, "Could not read server name" );
        return false;
    }
    s_ServerName[i_nameLength] = '\0';

    if( strcmp( s_ServerName, "VDR-OSD") == 0 )
    {
        msg_Dbg( p_filter, "Server is a VDR" );
        p_sys->b_alpha_from_vnc = true;
    }
    else
    {
        msg_Dbg( p_filter, "Server is a normal VNC" );
        p_sys->b_alpha_from_vnc = false;
    }


    msg_Dbg( p_filter, "Server init message read properly" );
    msg_Dbg( p_filter, "Server name is %s", s_ServerName );

    msg_Dbg( p_filter, "Writing SetPixelFormat message" );

    rfbSetPixelFormatMsg sp;
    sp.type = rfbSetPixelFormat;
581
    sp.pad1 = sp.pad2 = 0;
582 583 584 585 586 587 588 589 590 591
    sp.format.bitsPerPixel = 8;
    sp.format.depth = 8 ;
    sp.format.bigEndian = 1;
    sp.format.trueColour = 0;
    sp.format.redMax = htons(31);
    sp.format.greenMax = htons(31);
    sp.format.blueMax = htons(31);
    sp.format.redShift = 10;
    sp.format.greenShift = 5;
    sp.format.blueShift = 0;
592
    sp.format.pad1 = sp.format.pad2 = 0;
593 594 595 596 597 598 599 600 601 602 603 604

    if( !write_exact( p_filter, p_sys->i_socket,
                      (char*)&sp, sz_rfbSetPixelFormatMsg) )
    {
        msg_Err( p_filter, "Could not write SetPixelFormat message" );
        return false;
    }

    msg_Dbg( p_filter, "Writing SetEncodings message" );

    rfbSetEncodingsMsg se;
    se.type = rfbSetEncodings;
605
    se.pad = 0;
606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647
    se.nEncodings = htons( p_sys->b_alpha_from_vnc ? 3 : 2 );

    if( !write_exact( p_filter, p_sys->i_socket,
                      (char*)&se, sz_rfbSetEncodingsMsg) )
    {
        msg_Err( p_filter, "Could not write SetEncodings message begin" );
        return false;
    }

    uint32_t i_encoding;

    msg_Dbg( p_filter, "Writing SetEncodings rfbEncodingCopyRect" );
    i_encoding = htonl(rfbEncodingCopyRect);
    if( !write_exact( p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
    {
        msg_Err( p_filter, "Could not write encoding type rfbEncodingCopyRect." );
        return false;
    }

    msg_Dbg( p_filter, "Writing SetEncodings rfbEncodingRRE" );
    i_encoding = htonl(rfbEncodingRRE);
    if( !write_exact(p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
    {
        msg_Err( p_filter, "Could not write encoding type rfbEncodingRRE." );
        return false;
    }

    if( p_sys->b_alpha_from_vnc )
    {
        msg_Dbg( p_filter, "Writing SetEncodings rfbEncSpecialUseAlpha" );
        i_encoding = 0x00F0FFFF; /* rfbEncSpecialUseAlpha is 0xFFFFF000
                                  * before we swap it */
        if( !write_exact(p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
        {
            msg_Err( p_filter, "Could not write encoding type rfbEncSpecialUseAlpha." );
            return false;
        }
    }
    return true;

}

648
static void* vnc_worker_thread( vlc_object_t *p_thread_obj )
649 650 651
{
    filter_t* p_filter = (filter_t*)(p_thread_obj->p_parent);
    filter_sys_t *p_sys = p_filter->p_sys;
652
    vlc_object_t *p_update_request_thread;
653
    int canc = vlc_savecancel ();
654 655 656

    msg_Dbg( p_filter, "VNC worker thread started" );

657
    if( !open_vnc_connection ( p_filter ) )
658 659
    {
        msg_Err( p_filter, "Could not connect to vnc host" );
660
        goto exit;
661 662
    }

663
    if( !handshaking ( p_filter ) )
664 665
    {
        msg_Err( p_filter, "Error occured while handshaking vnc host" );
666
        goto exit;
667 668 669 670 671 672 673
    }

    p_sys->b_connection_active = true; /* to enable sending key
                                            * and mouse events to host */

    /* Create an empty picture for VNC the data */
    vlc_mutex_lock( &p_sys->lock );
674
    p_sys->p_pic = picture_New( VLC_CODEC_YUVA,
675
                                p_sys->i_vnc_width, p_sys->i_vnc_height, 1, 1 );
676 677 678
    if( !p_sys->p_pic )
    {
        vlc_mutex_unlock( &p_sys->lock );
679
        goto exit;
680 681 682 683 684 685
    }
	p_sys->i_vnc_pixels = p_sys->i_vnc_width * p_sys->i_vnc_height;

    vlc_mutex_unlock( &p_sys->lock );

    /* create the update request thread */
686 687 688 689
    p_update_request_thread = vlc_object_create( p_filter,
                                                 sizeof( vlc_object_t ) );
    vlc_object_attach( p_update_request_thread, p_filter );
    if( vlc_thread_create( p_update_request_thread,
690
                           update_request_thread, VLC_THREAD_PRIORITY_LOW ) )
691
    {
692
        vlc_object_release( p_update_request_thread );
693
        msg_Err( p_filter, "cannot spawn vnc update request thread" );
694
        goto exit;
695 696 697
    }

    /* connection is initialized, now read and handle server messages */
698 699 700 701 702 703
    while( vlc_object_alive( p_thread_obj ) )
    {
        rfbServerToClientMsg msg;
        int i_msgSize;

        memset( &msg, 0, sizeof(msg) );
704

705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
        if( !read_exact(p_filter, p_sys->i_socket, (char*)&msg, 1 ) )
        {
            msg_Err( p_filter, "Error while waiting for next server message");
            break;
        }
        switch (msg.type)
        {
        case rfbFramebufferUpdate:
            i_msgSize = sz_rfbFramebufferUpdateMsg;
            break;
        case rfbSetColourMapEntries:
            i_msgSize = sz_rfbSetColourMapEntriesMsg;
            break;
        case rfbBell:
            i_msgSize = sz_rfbBellMsg;
            break;
        case rfbServerCutText:
            i_msgSize = sz_rfbServerCutTextMsg;
            break;
        case rfbReSizeFrameBuffer:
            i_msgSize = sz_rfbReSizeFrameBufferMsg;
            break;
        default:
            i_msgSize = 0;
            msg_Err( p_filter, "Invalid message %u received", msg.type );
            break;
        }
732

733 734
        if( i_msgSize <= 0 )
            break;
735

736 737 738 739 740 741 742
        if( --i_msgSize > 0 )
        {
            if ( !read_exact( p_filter, p_sys->i_socket,
                              ((char*)&msg)+1, i_msgSize ) )
            {
                msg_Err( p_filter, "Error while reading message of type %u",
                         msg.type );
743
                break;
744 745 746
            }
        }
        process_server_message( p_filter, &msg);
747 748
    }

749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
    msg_Dbg( p_filter, "joining update_request_thread" );
    vlc_object_kill( p_update_request_thread );
    vlc_thread_join( p_update_request_thread );
    vlc_object_release( p_update_request_thread );
    msg_Dbg( p_filter, "released update_request_thread" );

exit:

    vlc_mutex_lock( &p_sys->lock );
    p_sys->b_connection_active = false;

    if (p_sys->i_socket >= 0)
        net_Close(p_sys->i_socket);

    if( p_sys->p_pic )
        picture_Release( p_sys->p_pic );

    /* It will hide the subtitle */
    p_sys->b_continue = false;
    p_sys->b_need_update = true;
    vlc_mutex_unlock( &p_sys->lock );
770

771
    msg_Dbg( p_filter, "VNC message reader thread ended" );
772
    vlc_restorecancel (canc);
773
    return NULL;
774 775
}

776
static void* update_request_thread( vlc_object_t *p_thread_obj )
777 778 779
{
    filter_t* p_filter = (filter_t*)(p_thread_obj->p_parent);
    filter_sys_t *p_sys = p_filter->p_sys;
780
    int canc = vlc_savecancel ();
781 782 783 784 785 786 787 788 789 790 791

    msg_Dbg( p_filter, "VNC update request thread started" );

    rfbFramebufferUpdateRequestMsg udr;
    udr.type = rfbFramebufferUpdateRequest;
    udr.incremental = 0;
    udr.x = 0;
    udr.y = 0;
    udr.w = htons(p_sys->i_vnc_width);
    udr.h = htons(p_sys->i_vnc_height);

Rémi Duraffort's avatar
Rémi Duraffort committed
792 793
    if( !write_exact(p_filter, p_sys->i_socket, (char*)&udr,
                     sz_rfbFramebufferUpdateRequestMsg) )
794 795 796
    {
        msg_Err( p_filter, "Could not write rfbFramebufferUpdateRequestMsg." );
        p_sys->b_continue = false;
797
        return NULL;
798 799 800 801 802
    }

    udr.incremental = 1;
    mtime_t i_poll_interval_microsec = p_sys->i_vnc_poll_interval * 1000;

803
    if( p_sys->b_vnc_poll)
804
    {
805
        while( vlc_object_alive( p_thread_obj ) )
806 807
        {
            msleep( i_poll_interval_microsec );
Rémi Duraffort's avatar
Rémi Duraffort committed
808 809
            if( !write_exact(p_filter, p_sys->i_socket, (char*)&udr,
                             sz_rfbFramebufferUpdateRequestMsg))
810 811
            {
                msg_Err( p_filter, "Could not write rfbFramebufferUpdateRequestMsg." );
812
                break;
813 814
            }
        }
815
        p_sys->b_continue = false;
816 817 818 819 820
    }
    else
    {
        msg_Dbg( p_filter, "VNC polling disabled." );
    }
821

822
    msg_Dbg( p_filter, "VNC update request thread ended" );
823
    vlc_restorecancel (canc);
824
    return NULL;
825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882
}

static bool process_server_message ( filter_t *p_filter,
                                     rfbServerToClientMsg *msg )
{
    filter_sys_t *p_sys = p_filter->p_sys;

    switch (msg->type)
    {
    case rfbFramebufferUpdate:
        {
            msg->fu.nRects = htons(msg->fu.nRects);
            rfbFramebufferUpdateRectHeader hdr;

            for (int i_rect = 0; i_rect < msg->fu.nRects; i_rect++)
            {
                if (!read_exact(p_filter, p_sys->i_socket, (char*)&hdr,
                    sz_rfbFramebufferUpdateRectHeader ) )
                {
                    msg_Err( p_filter, "Could not read FrameBufferUpdate header" );
                    return false;
                }
                hdr.r.x = htons(hdr.r.x);
                hdr.r.y = htons(hdr.r.y);
                hdr.r.w = htons(hdr.r.w);
                hdr.r.h = htons(hdr.r.h);
                hdr.encoding = htonl(hdr.encoding);

                switch (hdr.encoding)
                {
                case rfbEncodingRaw:
                    {
                        int i_line;
                        for (i_line = 0; i_line < hdr.r.h; i_line++)
                        {
                            if ( !read_exact( p_filter, p_sys->i_socket,
                                    p_sys->read_buffer, hdr.r.w ) )
                            {
                                msg_Err( p_filter,
                                 "Could not read FrameBufferUpdate line data" );
                               return false;
                            }
                            vlc_mutex_lock( &p_sys->lock );
                            if ( !raw_line( p_sys, hdr.r.x,
                                            hdr.r.y + i_line,
                                            hdr.r.w ) )
                            {
                                msg_Err( p_filter, "raw_line failed." );
                                vlc_mutex_unlock( &p_sys->lock );
                                return false;
                            }
                            vlc_mutex_unlock( &p_sys->lock );
                        }
                    }
                    break;

                case rfbEncodingCopyRect:
                    {
883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905
                        rfbCopyRect rect;

                        if ( !read_exact( p_filter, p_sys->i_socket,
                                          (char*)&rect,
                                          sz_rfbCopyRect ) )
                        {
                            msg_Err( p_filter, "Could not read rfbCopyRect" );
                            return false;
                        }
                        rect.srcX = htons( rect.srcX );
                        rect.srcY = htons( rect.srcY );

                        vlc_mutex_lock( &p_sys->lock );
                        if ( !copy_rect( p_sys,
                                         hdr.r.x,   hdr.r.y,
                                         hdr.r.w,   hdr.r.h,
                                         rect.srcX, rect.srcY ) )
                        {
                            msg_Err( p_filter, "copy_rect failed." );
                            vlc_mutex_unlock( &p_sys->lock );
                            return false;
                        }
                        vlc_mutex_unlock( &p_sys->lock );
906
                    }
907
                    break;
908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000

                case rfbEncodingRRE:
                    {
                        rfbRREHeader rrehdr;
                        if ( !read_exact( p_filter, p_sys->i_socket,
                                          (char*)&rrehdr,
                                          sz_rfbRREHeader ) )
                        {
                            msg_Err( p_filter, "Could not read rfbRREHeader" );
                            return false;
                        }
                        uint8_t i_pixcolor;
                        if ( !read_exact(p_filter, p_sys->i_socket,
                                         (char*)&i_pixcolor, 1 ) )
                        {
                            msg_Err( p_filter, "Could not read RRE pixcolor" );
                            return false;
                        }

                        vlc_mutex_lock( &p_sys->lock );
                        if ( !fill_rect( p_sys,
                                        hdr.r.x, hdr.r.y,
                                        hdr.r.w, hdr.r.h,
                                        i_pixcolor) )
                        {
                            msg_Err( p_filter, "main fill_rect failed." );
                            vlc_mutex_unlock( &p_sys->lock );
                            return false;
                        }
                        vlc_mutex_unlock( &p_sys->lock );

                        rrehdr.nSubrects = htonl(rrehdr.nSubrects);

                        int i_datasize = rrehdr.nSubrects *
                                     ( sizeof(i_pixcolor) + sz_rfbRectangle ) ;
                        if ( i_datasize > READ_BUFFER_SIZE )
                        {
                            msg_Err( p_filter, "Buffer too small, "
                                     "need %u bytes", i_datasize );
                            return false;
                        }
                        if ( !read_exact( p_filter, p_sys->i_socket,
                                       p_sys->read_buffer, i_datasize ) )
                        {
                            msg_Err( p_filter,
                                     "Could not read RRE subrect data" );
                            return false;
                        }

                        uint32_t i_subrect;
                        rfbRectangle* p_subrect;
                        int i_offset = 0;
                        vlc_mutex_lock( &p_sys->lock );
                        for ( i_subrect = 0;
                              i_subrect < rrehdr.nSubrects; i_subrect++)
                        {
                            i_pixcolor = p_sys->read_buffer[i_offset];
                            i_offset += sizeof(i_pixcolor);
                            p_subrect =
                               (rfbRectangle*)(p_sys->read_buffer + i_offset);
                            i_offset += sz_rfbRectangle;

                            if (!fill_rect( p_sys,
                                            htons(p_subrect->x) + hdr.r.x,
                                            htons(p_subrect->y) + hdr.r.y,
                                            htons(p_subrect->w),
                                            htons(p_subrect->h),
                                            i_pixcolor) )
                            {
                                msg_Err( p_filter,
                                    "subrect %u fill_rect failed.", i_subrect );
                                vlc_mutex_unlock( &p_sys->lock );
                                return false;
                            }
                        }
                        vlc_mutex_unlock( &p_sys->lock );
                    }
                    break;

                }

            }
            vlc_mutex_lock( &p_sys->lock );
            p_sys->b_need_update = true;
            vlc_mutex_unlock( &p_sys->lock );
        }
        return true;

    case rfbSetColourMapEntries:
        {
            msg->scme.nColours = htons(msg->scme.nColours);
            msg->scme.firstColour = htons(msg->scme.firstColour);
            int i_datasize;
Rémi Duraffort's avatar
Rémi Duraffort committed
1001
            if ( p_sys->b_alpha_from_vnc )
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
            {
                i_datasize = 2 * msg->scme.nColours * 4;
            }
            else
            {
                i_datasize = 2 * msg->scme.nColours * 3;
            }
            if ( i_datasize > READ_BUFFER_SIZE )
            {
                msg_Err( p_filter, "Buffer too small, need %u bytes",
                                   i_datasize );
                return false;
            }

            if ( !read_exact( p_filter, p_sys->i_socket,
                              p_sys->read_buffer, i_datasize ) )
            {
                msg_Err( p_filter, "Could not read color map data" );
                return false;
            }

            uint8_t i_red, i_green, i_blue, i_alpha, i_color_index;
            uint16_t i_offset = 0;
            i_alpha = 255;

            for (int i = 0; i < msg->scme.nColours; i++)
            {
                i_color_index = i+msg->scme.firstColour;
Rémi Duraffort's avatar
Rémi Duraffort committed
1030
                if ( p_sys->b_alpha_from_vnc )
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
                {
                    i_alpha = p_sys->read_buffer[i_offset];
                    i_offset += 2;
                }
                i_red   = p_sys->read_buffer[i_offset];
                i_offset += 2;
                i_green = p_sys->read_buffer[i_offset];
                i_offset += 2;
                i_blue  = p_sys->read_buffer[i_offset];
                i_offset += 2;
                rgb_to_yuv( &p_sys->ar_color_table_yuv[i_color_index][0],
                            &p_sys->ar_color_table_yuv[i_color_index][1],
                            &p_sys->ar_color_table_yuv[i_color_index][2],
                            i_red,
                            i_green,
                            i_blue );
                p_sys->ar_color_table_yuv[i][3] = i_alpha;
            }
        }
        return true;

    case rfbBell:
        msg_Err( p_filter, "rfbBell received" );
        return true;

    case rfbServerCutText:
        msg->sct.length = htons(msg->sct.length);
        if ( msg->sct.length > READ_BUFFER_SIZE )
        {
            msg_Err( p_filter, "Buffer too small, need %u bytes", msg->sct.length );
            return false;
        }
        if ( !read_exact(p_filter, p_sys->i_socket,
                         p_sys->read_buffer, msg->sct.length ) )
        {
            msg_Err( p_filter, "Could not read Reading rfbServerCutText data" );
            return false;
        }
        return true;

    case rfbReSizeFrameBuffer:
        msg_Err( p_filter, "Reading rfbReSizeFrameBuffer not implemented" );
        return false;

    default:
        msg_Err( p_filter, "Invalid message %u received", msg->type );
        return false;
    }
    return false;
}

/****************************************************************************
 * Filter: the whole thing
 ****************************************************************************
 * This function outputs subpictures at regular time intervals.
 ****************************************************************************/
static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
{
    filter_sys_t *p_sys = p_filter->p_sys;
    subpicture_t *p_spu;
    subpicture_region_t *p_region;
    video_format_t fmt;
    picture_t *p_pic;

    if( !p_sys->b_need_update )
    {
        return NULL;
    }

    vlc_mutex_lock( &p_sys->lock );

    p_pic = p_sys->p_pic;

    if( !p_pic )
    {
        vlc_mutex_unlock( &p_sys->lock );
        return NULL;
    }

    /* Allocate the subpicture internal data. */
Laurent Aimar's avatar
Laurent Aimar committed
1111
    p_spu = filter_NewSubpicture( p_filter );
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
    if( !p_spu )
    {
        vlc_mutex_unlock( &p_sys->lock );
        return NULL;
    }

    p_spu->b_absolute = false;
    p_spu->i_start = date;
    p_spu->i_stop = 0;
    p_spu->b_ephemer = true;

1123 1124 1125
    if( !p_sys->b_continue )
        p_spu->i_stop = p_spu->i_start + 1;

1126 1127
    /* Create new SPU region */
    memset( &fmt, 0, sizeof(video_format_t) );
1128
    fmt.i_chroma = VLC_CODEC_YUVA;
1129 1130 1131 1132
    fmt.i_sar_num = fmt.i_sar_den = 1;
    fmt.i_width = fmt.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
    fmt.i_height = fmt.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
    fmt.i_x_offset = fmt.i_y_offset = 0;
1133
    p_region = subpicture_region_New( &fmt );
1134 1135 1136 1137 1138 1139 1140 1141
    if( !p_region )
    {
        msg_Err( p_filter, "cannot allocate SPU region" );
        p_filter->pf_sub_buffer_del( p_filter, p_spu );
        vlc_mutex_unlock( &p_sys->lock );
        return NULL;
    }

1142
    /* FIXME the copy is probably not needed anymore */
1143
    picture_Copy( p_region->p_picture, p_pic );
1144 1145 1146 1147 1148 1149

    p_sys->b_need_update = false;

    vlc_mutex_unlock( &p_sys->lock );

    /* set to one of the 9 relative locations */
1150
    p_region->i_align = 0; /* Center */
1151 1152 1153
    p_spu->b_absolute = false;


1154 1155
    p_spu->i_original_picture_width = 0; /*Let vout core do the horizontal scaling */
    p_spu->i_original_picture_height = fmt.i_height;
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207

    p_spu->p_region = p_region;

    p_spu->i_alpha = ( p_sys->i_alpha );

    return p_spu;
}


static inline void rgb_to_yuv( uint8_t *y, uint8_t *u, uint8_t *v,
                               int r, int g, int b )
{
    *y = ( ( (  66 * r + 129 * g +  25 * b + 128 ) >> 8 ) + 16 );
    *u =   ( ( -38 * r -  74 * g + 112 * b + 128 ) >> 8 ) + 128 ;
    *v =   ( ( 112 * r -  94 * g -  18 * b + 128 ) >> 8 ) + 128 ;
}

static inline bool fill_rect( filter_sys_t* p_sys,
                              uint16_t i_x, uint16_t i_y,
                              uint16_t i_w, uint16_t i_h,
                              uint8_t i_color)
{
    plane_t *p_outY = p_sys->p_pic->p+Y_PLANE;
    plane_t *p_outU = p_sys->p_pic->p+U_PLANE;
    plane_t *p_outV = p_sys->p_pic->p+V_PLANE;
    plane_t *p_outA = p_sys->p_pic->p+A_PLANE;
    int i_pitch = p_outY->i_pitch;
    int i_lines = p_outY->i_lines;
    if ( i_x + i_w > i_pitch)
        return false;
    if ( i_y + i_h > i_lines)
        return false;
    int i_line_offset = i_y * i_pitch;
    uint8_t i_yuv_y = p_sys->ar_color_table_yuv[i_color][0];
    uint8_t i_yuv_u = p_sys->ar_color_table_yuv[i_color][1];
    uint8_t i_yuv_v = p_sys->ar_color_table_yuv[i_color][2];
    uint8_t i_alpha = p_sys->ar_color_table_yuv[i_color][3];
    for( int i_line = 0; i_line < i_h; i_line++ )
    {
        for( int i_column = 0; i_column < i_w; i_column++ )
        {
            int i_total_offset = i_line_offset + i_x + i_column;
            p_outY->p_pixels[ i_total_offset ] = i_yuv_y;
            p_outU->p_pixels[ i_total_offset ] = i_yuv_u;
            p_outV->p_pixels[ i_total_offset ] = i_yuv_v;
            p_outA->p_pixels[ i_total_offset ] = i_alpha;
        }
        i_line_offset += i_pitch;
    }
    return true;
}

1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
static inline bool copy_rect( filter_sys_t* p_sys,
                              uint16_t i_x, uint16_t i_y,
                              uint16_t i_w, uint16_t i_h,
                              uint16_t i_sx, uint16_t i_sy )
{
    plane_t *p_Y = p_sys->p_pic->p+Y_PLANE;
    plane_t *p_U = p_sys->p_pic->p+U_PLANE;
    plane_t *p_V = p_sys->p_pic->p+V_PLANE;
    plane_t *p_A = p_sys->p_pic->p+A_PLANE;

    int i_pitch = p_Y->i_pitch;
    int i_lines = p_Y->i_lines;

    fprintf( stderr, "copy_rect: (%d,%d)+(%d,%d) -> (%d,%d)\n", i_x, i_y, i_w, i_h, i_sx, i_sy );

    if( i_x + i_w > i_pitch || i_sx + i_w > i_pitch )
        return false;
    if( i_y + i_h > i_lines || i_sy + i_h > i_lines)
        return false;

    if( i_w <= 0 || i_h <= 0 )
        return true;

    uint8_t *pb_buffer = calloc( i_w * i_h, 4 );
    if( !pb_buffer )
        return false;

    for( int i_line = 0; i_line < i_h; i_line++ )
    {
        for( int i_column = 0; i_column < i_w; i_column++ )
        {
            const int i_src_offset = ( i_sy + i_line ) * i_pitch + i_sx + i_column;
            const int i_tmp_offset = (    0 + i_line ) *     i_w +    0 + i_column;

            pb_buffer[4*i_tmp_offset + 0] = p_Y->p_pixels[i_src_offset];
            pb_buffer[4*i_tmp_offset + 1] = p_U->p_pixels[i_src_offset];
            pb_buffer[4*i_tmp_offset + 2] = p_V->p_pixels[i_src_offset];
            pb_buffer[4*i_tmp_offset + 3] = p_A->p_pixels[i_src_offset];
        }
    }

    for( int i_line = 0; i_line < i_h; i_line++ )
    {
        for( int i_column = 0; i_column < i_w; i_column++ )
        {
            const int i_tmp_offset = (   0 + i_line ) *     i_w +   0 + i_column;
            const int i_dst_offset = ( i_y + i_line ) * i_pitch + i_x + i_column;

            p_Y->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 0];
            p_U->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 1];
            p_V->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 2];
            p_A->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 3];
        }
    }
    free( pb_buffer );
    return true;

}

1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
static inline bool raw_line(  filter_sys_t* p_sys,
                              uint16_t i_x, uint16_t i_y,
                              uint16_t i_w )
{
    plane_t *p_outY = p_sys->p_pic->p+Y_PLANE;
    plane_t *p_outU = p_sys->p_pic->p+U_PLANE;
    plane_t *p_outV = p_sys->p_pic->p+V_PLANE;
    plane_t *p_outA = p_sys->p_pic->p+A_PLANE;
    int i_pitch = p_outY->i_pitch;
    int i_lines = p_outY->i_lines;
    if ( i_x + i_w > i_pitch)
        return false;
    if ( i_y > i_lines)
        return false;

    int i_line_offset = i_y * i_pitch + i_x;

    for( int i_column = 0; i_column < i_w; i_column++ )
    {
        int i_offset = i_line_offset + i_column;
        uint8_t i_color = p_sys->read_buffer[i_column];
        p_outY->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][0];
        p_outU->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][1];
        p_outV->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][2];
        p_outA->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][3];
    }

    return true;
}


/*****************************************************************************
 * MouseEvent: callback for mouse events
 *****************************************************************************/
1301 1302 1303 1304
static int MouseEvent( filter_t *p_filter,
                       const vlc_mouse_t *p_old,
                       const vlc_mouse_t *p_new,
                       const video_format_t *p_fmt )
1305 1306
{
    filter_sys_t *p_sys = p_filter->p_sys;
1307
    VLC_UNUSED(p_old);
1308 1309 1310 1311

    if( !p_sys->b_vnc_mouse_events )
        return VLC_SUCCESS;

1312 1313 1314
    int i_v = p_new->i_pressed;
    int i_x = p_new->i_x;
    int i_y = p_new->i_y;
1315

1316 1317
    vlc_mutex_lock( &p_sys->lock );

1318
    const int v_h = p_fmt->i_visible_height;
1319
    const int v_w = p_sys->i_vnc_width * v_h / p_sys->i_vnc_height;
1320
    const int v_x = (p_fmt->i_visible_width-v_w)/2;
1321 1322 1323

    i_x -= v_x;

1324 1325
    if( i_y < 0 || i_x < 0 || i_y >= v_h || i_x >= v_w )
    {
1326
        vlc_mutex_unlock( &p_sys->lock );
1327
        msg_Dbg( p_filter, "invalid mouse event? x=%d y=%d btn=%x", i_x, i_y, i_v );
1328
        return VLC_SUCCESS;
1329
    }
1330 1331 1332 1333 1334 1335
    if( !p_sys->b_connection_active )
    {
        vlc_mutex_unlock( &p_sys->lock );
        return VLC_SUCCESS;
    }

1336
#ifdef VNC_DEBUG
1337
    msg_Dbg( p_filter, "mouse event x=%d y=%d btn=%x", i_x, i_y, i_v );
1338 1339 1340 1341 1342 1343
#endif

    /* */
    i_x = i_x * p_sys->i_vnc_width / v_w;
    i_y = i_y * p_sys->i_vnc_height / v_h;

1344 1345 1346 1347 1348 1349 1350 1351 1352 1353
    /* buttonMask bits 0-7 are buttons 1-8, 0=up, 1=down */
    rfbPointerEventMsg ev;
    ev.type = rfbPointerEvent;
    ev.buttonMask = i_v;
    ev.x = htons(i_x);
    ev.y = htons(i_y);

    write_exact( p_filter, p_sys->i_socket,
                 (char*)&ev, sz_rfbPointerEventMsg);

1354 1355
    vlc_mutex_unlock( &p_sys->lock );

1356
    return VLC_EGENERIC;
1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372
}

/*****************************************************************************
 * KeyEvent: callback for keyboard events
 *****************************************************************************/
static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
                     vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    VLC_UNUSED(psz_var); VLC_UNUSED(oldval);

    filter_t *p_filter = (filter_t *)p_data;
    filter_sys_t *p_sys = p_filter->p_sys;

    if( !p_sys->b_vnc_key_events )
        return VLC_SUCCESS;

1373
    msg_Dbg( p_this, "key pressed (%"PRId64") ", newval.i_int );
1374 1375 1376

    if ( !newval.i_int )
    {
1377
        msg_Err( p_this, "Received invalid key event 0" );
1378 1379 1380
        return VLC_EGENERIC;
    }

1381 1382 1383 1384 1385 1386 1387
    vlc_mutex_lock( &p_sys->lock );
    if( !p_sys->b_connection_active )
    {
        vlc_mutex_unlock( &p_sys->lock );
        return VLC_SUCCESS;
    }

1388 1389 1390
    uint32_t i_key32 = newval.i_int;
    i_key32 = htonl(i_key32);
    rfbKeyEventMsg ev;
1391

1392 1393
    ev.type = rfbKeyEvent;
    ev.down = 1;
1394
    ev.pad = 0;
1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445

    /* first key-down for modifier-keys */
    if (newval.i_int & KEY_MODIFIER_CTRL)
    {
        ev.key = 0xffe3;
        write_exact( p_filter, p_sys->i_socket,
                     (char*)&ev, sz_rfbKeyEventMsg);
    }
    if (newval.i_int & KEY_MODIFIER_SHIFT)
    {
        ev.key = 0xffe1;
        write_exact( p_filter, p_sys->i_socket,
                     (char*)&ev, sz_rfbKeyEventMsg);
    }
    if (newval.i_int & KEY_MODIFIER_ALT)
    {
        ev.key = 0xffe9;
        write_exact( p_filter, p_sys->i_socket,
                     (char*)&ev, sz_rfbKeyEventMsg);
    }

    /* then key-down for the pressed key */
    ev.key = i_key32;
    write_exact( p_filter, p_sys->i_socket,
                 (char*)&ev, sz_rfbKeyEventMsg);

    ev.down = 0;

    /* then key-up for the pressed key */
    write_exact( p_filter, p_sys->i_socket,
                 (char*)&ev, sz_rfbKeyEventMsg);

    /* last key-down for modifier-keys */
    if (newval.i_int & KEY_MODIFIER_CTRL)
    {
        ev.key = 0xffe3;
        write_exact( p_filter, p_sys->i_socket,
                     (char*)&ev, sz_rfbKeyEventMsg);
    }
    if (newval.i_int & KEY_MODIFIER_SHIFT)
    {
        ev.key = 0xffe1;
        write_exact( p_filter, p_sys->i_socket,
                     (char*)&ev, sz_rfbKeyEventMsg);
    }
    if (newval.i_int & KEY_MODIFIER_ALT)
    {
       ev.key = 0xffe9;
       write_exact( p_filter, p_sys->i_socket,
                    (char*)&ev, sz_rfbKeyEventMsg);
    }
1446
    vlc_mutex_unlock( &p_sys->lock );
1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477

    return VLC_SUCCESS;
}

static void vnc_encrypt_bytes( unsigned char *bytes, char *passwd )
{
    unsigned char key[8];
    unsigned int i;

    for (i = 0; i < 8; i++)
        key[i] = i < strlen( passwd ) ? passwd[i] : '\0';

    gcry_cipher_hd_t ctx;
    gcry_cipher_open( &ctx, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB,0);

    /* reverse bits of the key */
    for( i = 0 ; i < 8 ; i ++ )
        key[i] =
            (key[i] >> 7) +
            (((key[i] >> 6) & 0x01 ) << 1 ) +
            (((key[i] >> 5) & 0x01 ) << 2 ) +
            (((key[i] >> 4) & 0x01 ) << 3 ) +
            (((key[i] >> 3) & 0x01 ) << 4 ) +
            (((key[i] >> 2) & 0x01 ) << 5 ) +
            (((key[i] >> 1) & 0x01 ) << 6 ) +
            ((key[i] & 0x01) << 7 );

    gcry_cipher_setkey( ctx, key, 8 );
    gcry_cipher_encrypt( ctx, bytes, CHALLENGESIZE, bytes, CHALLENGESIZE );
    gcry_cipher_close( ctx );
}
1478