vnc.h (20688B)
1/* 2 * QEMU VNC display driver 3 * 4 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws> 5 * Copyright (C) 2006 Fabrice Bellard 6 * Copyright (C) 2009 Red Hat, Inc 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 */ 26 27#ifndef QEMU_VNC_H 28#define QEMU_VNC_H 29 30#include "qemu/queue.h" 31#include "qemu/thread.h" 32#include "ui/clipboard.h" 33#include "ui/console.h" 34#include "audio/audio.h" 35#include "qemu/bitmap.h" 36#include "crypto/tlssession.h" 37#include "qemu/buffer.h" 38#include "io/channel-socket.h" 39#include "io/channel-tls.h" 40#include "io/net-listener.h" 41#include "authz/base.h" 42#include <zlib.h> 43 44#include "keymaps.h" 45#include "vnc-palette.h" 46#include "vnc-enc-zrle.h" 47#include "ui/kbd-state.h" 48 49// #define _VNC_DEBUG 1 50 51#ifdef _VNC_DEBUG 52#define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) 53#else 54#define VNC_DEBUG(fmt, ...) do { } while (0) 55#endif 56 57/***************************************************************************** 58 * 59 * Core data structures 60 * 61 *****************************************************************************/ 62 63typedef struct VncState VncState; 64typedef struct VncJob VncJob; 65typedef struct VncRect VncRect; 66typedef struct VncRectEntry VncRectEntry; 67 68typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len); 69 70typedef void VncWritePixels(VncState *vs, void *data, int size); 71 72typedef void VncSendHextileTile(VncState *vs, 73 int x, int y, int w, int h, 74 void *last_bg, 75 void *last_fg, 76 int *has_bg, int *has_fg); 77 78/* VNC_DIRTY_PIXELS_PER_BIT is the number of dirty pixels represented 79 * by one bit in the dirty bitmap, should be a power of 2 */ 80#define VNC_DIRTY_PIXELS_PER_BIT 16 81 82/* VNC_MAX_WIDTH must be a multiple of VNC_DIRTY_PIXELS_PER_BIT. */ 83 84#define VNC_MAX_WIDTH ROUND_UP(2560, VNC_DIRTY_PIXELS_PER_BIT) 85#define VNC_MAX_HEIGHT 2048 86 87/* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */ 88#define VNC_DIRTY_BITS (VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT) 89 90/* VNC_DIRTY_BPL (BPL = bits per line) might be greater than 91 * VNC_DIRTY_BITS due to alignment */ 92#define VNC_DIRTY_BPL(x) (sizeof((x)->dirty) / VNC_MAX_HEIGHT * BITS_PER_BYTE) 93 94#define VNC_STAT_RECT 64 95#define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT) 96#define VNC_STAT_ROWS (VNC_MAX_HEIGHT / VNC_STAT_RECT) 97 98#define VNC_AUTH_CHALLENGE_SIZE 16 99 100typedef struct VncDisplay VncDisplay; 101 102#include "vnc-auth-vencrypt.h" 103#ifdef CONFIG_VNC_SASL 104#include "vnc-auth-sasl.h" 105#endif 106#include "vnc-ws.h" 107 108struct VncRectStat 109{ 110 /* time of last 10 updates, to find update frequency */ 111 struct timeval times[10]; 112 int idx; 113 114 double freq; /* Update frequency (in Hz) */ 115 bool updated; /* Already updated during this refresh */ 116}; 117 118typedef struct VncRectStat VncRectStat; 119 120struct VncSurface 121{ 122 struct timeval last_freq_check; 123 DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], 124 VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT); 125 VncRectStat stats[VNC_STAT_ROWS][VNC_STAT_COLS]; 126 pixman_image_t *fb; 127 pixman_format_code_t format; 128}; 129 130typedef enum VncShareMode { 131 VNC_SHARE_MODE_CONNECTING = 1, 132 VNC_SHARE_MODE_SHARED, 133 VNC_SHARE_MODE_EXCLUSIVE, 134 VNC_SHARE_MODE_DISCONNECTED, 135} VncShareMode; 136 137typedef enum VncSharePolicy { 138 VNC_SHARE_POLICY_IGNORE = 1, 139 VNC_SHARE_POLICY_ALLOW_EXCLUSIVE, 140 VNC_SHARE_POLICY_FORCE_SHARED, 141} VncSharePolicy; 142 143struct VncDisplay 144{ 145 QTAILQ_HEAD(, VncState) clients; 146 int num_connecting; 147 int num_shared; 148 int num_exclusive; 149 int connections_limit; 150 VncSharePolicy share_policy; 151 QIONetListener *listener; 152 QIONetListener *wslistener; 153 DisplaySurface *ds; 154 DisplayChangeListener dcl; 155 kbd_layout_t *kbd_layout; 156 int lock_key_sync; 157 QEMUPutLEDEntry *led; 158 int ledstate; 159 QKbdState *kbd; 160 QemuMutex mutex; 161 162 QEMUCursor *cursor; 163 int cursor_msize; 164 uint8_t *cursor_mask; 165 166 struct VncSurface guest; /* guest visible surface (aka ds->surface) */ 167 pixman_image_t *server; /* vnc server surface */ 168 int true_width; /* server surface width before rounding up */ 169 170 const char *id; 171 QTAILQ_ENTRY(VncDisplay) next; 172 bool is_unix; 173 char *password; 174 time_t expires; 175 int auth; 176 int subauth; /* Used by VeNCrypt */ 177 int ws_auth; /* Used by websockets */ 178 int ws_subauth; /* Used by websockets */ 179 bool lossy; 180 bool non_adaptive; 181 bool power_control; 182 QCryptoTLSCreds *tlscreds; 183 QAuthZ *tlsauthz; 184 char *tlsauthzid; 185#ifdef CONFIG_VNC_SASL 186 VncDisplaySASL sasl; 187#endif 188 189 AudioState *audio_state; 190}; 191 192typedef struct VncTight { 193 int type; 194 uint8_t quality; 195 uint8_t compression; 196 uint8_t pixel24; 197 Buffer tight; 198 Buffer tmp; 199 Buffer zlib; 200 Buffer gradient; 201#ifdef CONFIG_VNC_JPEG 202 Buffer jpeg; 203#endif 204#ifdef CONFIG_VNC_PNG 205 Buffer png; 206#endif 207 int levels[4]; 208 z_stream stream[4]; 209} VncTight; 210 211typedef struct VncHextile { 212 VncSendHextileTile *send_tile; 213} VncHextile; 214 215typedef struct VncZlib { 216 Buffer zlib; 217 Buffer tmp; 218 z_stream stream; 219 int level; 220} VncZlib; 221 222typedef struct VncZrle { 223 int type; 224 Buffer fb; 225 Buffer zrle; 226 Buffer tmp; 227 Buffer zlib; 228 z_stream stream; 229 VncPalette palette; 230} VncZrle; 231 232typedef struct VncZywrle { 233 int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT]; 234} VncZywrle; 235 236struct VncRect 237{ 238 int x; 239 int y; 240 int w; 241 int h; 242}; 243 244struct VncRectEntry 245{ 246 struct VncRect rect; 247 QLIST_ENTRY(VncRectEntry) next; 248}; 249 250struct VncJob 251{ 252 VncState *vs; 253 254 QLIST_HEAD(, VncRectEntry) rectangles; 255 QTAILQ_ENTRY(VncJob) next; 256}; 257 258typedef enum { 259 VNC_STATE_UPDATE_NONE, 260 VNC_STATE_UPDATE_INCREMENTAL, 261 VNC_STATE_UPDATE_FORCE, 262} VncStateUpdate; 263 264#define VNC_MAGIC ((uint64_t)0x05b3f069b3d204bb) 265 266struct VncState 267{ 268 uint64_t magic; 269 QIOChannelSocket *sioc; /* The underlying socket */ 270 QIOChannel *ioc; /* The channel currently used for I/O */ 271 guint ioc_tag; 272 gboolean disconnecting; 273 274 DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_DIRTY_BITS); 275 uint8_t **lossy_rect; /* Not an Array to avoid costly memcpy in 276 * vnc-jobs-async.c */ 277 278 VncDisplay *vd; 279 VncStateUpdate update; /* Most recent pending request from client */ 280 VncStateUpdate job_update; /* Currently processed by job thread */ 281 int has_dirty; 282 uint32_t features; 283 int absolute; 284 int last_x; 285 int last_y; 286 uint32_t last_bmask; 287 size_t client_width; /* limited to u16 by RFB proto */ 288 size_t client_height; /* limited to u16 by RFB proto */ 289 VncShareMode share_mode; 290 291 uint32_t vnc_encoding; 292 293 int major; 294 int minor; 295 296 int auth; 297 int subauth; /* Used by VeNCrypt */ 298 char challenge[VNC_AUTH_CHALLENGE_SIZE]; 299 QCryptoTLSSession *tls; /* Borrowed pointer from channel, don't free */ 300#ifdef CONFIG_VNC_SASL 301 VncStateSASL sasl; 302#endif 303 bool encode_ws; 304 bool websocket; 305 306#ifdef CONFIG_VNC 307 VncClientInfo *info; 308#endif 309 310 /* Job thread bottom half has put data for a forced update 311 * into the output buffer. This offset points to the end of 312 * the update data in the output buffer. This lets us determine 313 * when a force update is fully sent to the client, allowing 314 * us to process further forced updates. */ 315 size_t force_update_offset; 316 /* We allow multiple incremental updates or audio capture 317 * samples to be queued in output buffer, provided the 318 * buffer size doesn't exceed this threshold. The value 319 * is calculating dynamically based on framebuffer size 320 * and audio sample settings in vnc_update_throttle_offset() */ 321 size_t throttle_output_offset; 322 Buffer output; 323 Buffer input; 324 /* current output mode information */ 325 VncWritePixels *write_pixels; 326 PixelFormat client_pf; 327 pixman_format_code_t client_format; 328 bool client_be; 329 330 CaptureVoiceOut *audio_cap; 331 struct audsettings as; 332 333 VncReadEvent *read_handler; 334 size_t read_handler_expect; 335 336 bool abort; 337 QemuMutex output_mutex; 338 QEMUBH *bh; 339 Buffer jobs_buffer; 340 341 /* Encoding specific, if you add something here, don't forget to 342 * update vnc_async_encoding_start() 343 */ 344 VncTight *tight; 345 VncZlib zlib; 346 VncHextile hextile; 347 VncZrle *zrle; 348 VncZywrle zywrle; 349 350 Notifier mouse_mode_notifier; 351 352 QemuClipboardPeer cbpeer; 353 QemuClipboardInfo *cbinfo; 354 uint32_t cbpending; 355 356 QTAILQ_ENTRY(VncState) next; 357}; 358 359 360/***************************************************************************** 361 * 362 * Authentication modes 363 * 364 *****************************************************************************/ 365 366enum { 367 VNC_AUTH_INVALID = 0, 368 VNC_AUTH_NONE = 1, 369 VNC_AUTH_VNC = 2, 370 VNC_AUTH_RA2 = 5, 371 VNC_AUTH_RA2NE = 6, 372 VNC_AUTH_TIGHT = 16, 373 VNC_AUTH_ULTRA = 17, 374 VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */ 375 VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */ 376 VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */ 377}; 378 379enum { 380 VNC_AUTH_VENCRYPT_PLAIN = 256, 381 VNC_AUTH_VENCRYPT_TLSNONE = 257, 382 VNC_AUTH_VENCRYPT_TLSVNC = 258, 383 VNC_AUTH_VENCRYPT_TLSPLAIN = 259, 384 VNC_AUTH_VENCRYPT_X509NONE = 260, 385 VNC_AUTH_VENCRYPT_X509VNC = 261, 386 VNC_AUTH_VENCRYPT_X509PLAIN = 262, 387 VNC_AUTH_VENCRYPT_X509SASL = 263, 388 VNC_AUTH_VENCRYPT_TLSSASL = 264, 389}; 390 391 392/***************************************************************************** 393 * 394 * Encoding types 395 * 396 *****************************************************************************/ 397 398#define VNC_ENCODING_RAW 0x00000000 399#define VNC_ENCODING_COPYRECT 0x00000001 400#define VNC_ENCODING_RRE 0x00000002 401#define VNC_ENCODING_CORRE 0x00000004 402#define VNC_ENCODING_HEXTILE 0x00000005 403#define VNC_ENCODING_ZLIB 0x00000006 404#define VNC_ENCODING_TIGHT 0x00000007 405#define VNC_ENCODING_ZLIBHEX 0x00000008 406#define VNC_ENCODING_TRLE 0x0000000f 407#define VNC_ENCODING_ZRLE 0x00000010 408#define VNC_ENCODING_ZYWRLE 0x00000011 409#define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */ 410#define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */ 411#define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */ 412#define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */ 413#define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */ 414#define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */ 415#define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */ 416#define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */ 417#define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */ 418#define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */ 419#define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */ 420#define VNC_ENCODING_LED_STATE 0XFFFFFEFB /* -261 */ 421#define VNC_ENCODING_DESKTOP_RESIZE_EXT 0XFFFFFECC /* -308 */ 422#define VNC_ENCODING_XVP 0XFFFFFECB /* -309 */ 423#define VNC_ENCODING_ALPHA_CURSOR 0XFFFFFEC6 /* -314 */ 424#define VNC_ENCODING_WMVi 0x574D5669 425#define VNC_ENCODING_CLIPBOARD_EXT 0xc0a1e5ce 426 427/***************************************************************************** 428 * 429 * Other tight constants 430 * 431 *****************************************************************************/ 432 433/* 434 * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC. 435 */ 436 437#define VNC_TIGHT_CCB_RESET_MASK (0x0f) 438#define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4) 439#define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4) 440#define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4) 441#define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4) 442#define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4) 443#define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4) 444#define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4) 445 446/***************************************************************************** 447 * 448 * Features 449 * 450 *****************************************************************************/ 451 452enum VncFeatures { 453 VNC_FEATURE_RESIZE, 454 VNC_FEATURE_RESIZE_EXT, 455 VNC_FEATURE_HEXTILE, 456 VNC_FEATURE_POINTER_TYPE_CHANGE, 457 VNC_FEATURE_WMVI, 458 VNC_FEATURE_TIGHT, 459 VNC_FEATURE_ZLIB, 460 VNC_FEATURE_RICH_CURSOR, 461 VNC_FEATURE_ALPHA_CURSOR, 462 VNC_FEATURE_TIGHT_PNG, 463 VNC_FEATURE_ZRLE, 464 VNC_FEATURE_ZYWRLE, 465 VNC_FEATURE_LED_STATE, 466 VNC_FEATURE_XVP, 467 VNC_FEATURE_CLIPBOARD_EXT, 468}; 469 470#define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE) 471#define VNC_FEATURE_RESIZE_EXT_MASK (1 << VNC_FEATURE_RESIZE_EXT) 472#define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE) 473#define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE) 474#define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI) 475#define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT) 476#define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB) 477#define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR) 478#define VNC_FEATURE_ALPHA_CURSOR_MASK (1 << VNC_FEATURE_ALPHA_CURSOR) 479#define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG) 480#define VNC_FEATURE_ZRLE_MASK (1 << VNC_FEATURE_ZRLE) 481#define VNC_FEATURE_ZYWRLE_MASK (1 << VNC_FEATURE_ZYWRLE) 482#define VNC_FEATURE_LED_STATE_MASK (1 << VNC_FEATURE_LED_STATE) 483#define VNC_FEATURE_XVP_MASK (1 << VNC_FEATURE_XVP) 484#define VNC_FEATURE_CLIPBOARD_EXT_MASK (1 << VNC_FEATURE_CLIPBOARD_EXT) 485 486 487/* Client -> Server message IDs */ 488#define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0 489#define VNC_MSG_CLIENT_SET_ENCODINGS 2 490#define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3 491#define VNC_MSG_CLIENT_KEY_EVENT 4 492#define VNC_MSG_CLIENT_POINTER_EVENT 5 493#define VNC_MSG_CLIENT_CUT_TEXT 6 494#define VNC_MSG_CLIENT_VMWARE_0 127 495#define VNC_MSG_CLIENT_CALL_CONTROL 249 496#define VNC_MSG_CLIENT_XVP 250 497#define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251 498#define VNC_MSG_CLIENT_TIGHT 252 499#define VNC_MSG_CLIENT_GII 253 500#define VNC_MSG_CLIENT_VMWARE_1 254 501#define VNC_MSG_CLIENT_QEMU 255 502 503/* Server -> Client message IDs */ 504#define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0 505#define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1 506#define VNC_MSG_SERVER_BELL 2 507#define VNC_MSG_SERVER_CUT_TEXT 3 508#define VNC_MSG_SERVER_VMWARE_0 127 509#define VNC_MSG_SERVER_CALL_CONTROL 249 510#define VNC_MSG_SERVER_XVP 250 511#define VNC_MSG_SERVER_TIGHT 252 512#define VNC_MSG_SERVER_GII 253 513#define VNC_MSG_SERVER_VMWARE_1 254 514#define VNC_MSG_SERVER_QEMU 255 515 516 517 518/* QEMU client -> server message IDs */ 519#define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0 520#define VNC_MSG_CLIENT_QEMU_AUDIO 1 521 522/* QEMU server -> client message IDs */ 523#define VNC_MSG_SERVER_QEMU_AUDIO 1 524 525 526 527/* QEMU client -> server audio message IDs */ 528#define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0 529#define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1 530#define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2 531 532/* QEMU server -> client audio message IDs */ 533#define VNC_MSG_SERVER_QEMU_AUDIO_END 0 534#define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1 535#define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2 536 537/* XVP server -> client status code */ 538#define VNC_XVP_CODE_FAIL 0 539#define VNC_XVP_CODE_INIT 1 540 541/* XVP client -> server action request */ 542#define VNC_XVP_ACTION_SHUTDOWN 2 543#define VNC_XVP_ACTION_REBOOT 3 544#define VNC_XVP_ACTION_RESET 4 545 546/* extended clipboard flags */ 547#define VNC_CLIPBOARD_TEXT (1 << 0) 548#define VNC_CLIPBOARD_RTF (1 << 1) 549#define VNC_CLIPBOARD_HTML (1 << 2) 550#define VNC_CLIPBOARD_DIB (1 << 3) 551#define VNC_CLIPBOARD_FILES (1 << 4) 552#define VNC_CLIPBOARD_CAPS (1 << 24) 553#define VNC_CLIPBOARD_REQUEST (1 << 25) 554#define VNC_CLIPBOARD_PEEK (1 << 26) 555#define VNC_CLIPBOARD_NOTIFY (1 << 27) 556#define VNC_CLIPBOARD_PROVIDE (1 << 28) 557 558/***************************************************************************** 559 * 560 * Internal APIs 561 * 562 *****************************************************************************/ 563 564/* Event loop functions */ 565gboolean vnc_client_io(QIOChannel *ioc, 566 GIOCondition condition, 567 void *opaque); 568 569size_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen); 570size_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen); 571 572/* Protocol I/O functions */ 573void vnc_write(VncState *vs, const void *data, size_t len); 574void vnc_write_u32(VncState *vs, uint32_t value); 575void vnc_write_s32(VncState *vs, int32_t value); 576void vnc_write_u16(VncState *vs, uint16_t value); 577void vnc_write_u8(VncState *vs, uint8_t value); 578void vnc_flush(VncState *vs); 579void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting); 580void vnc_disconnect_finish(VncState *vs); 581void vnc_start_protocol(VncState *vs); 582 583 584/* Buffer I/O functions */ 585uint32_t read_u32(uint8_t *data, size_t offset); 586 587/* Protocol stage functions */ 588void vnc_client_error(VncState *vs); 589size_t vnc_client_io_error(VncState *vs, ssize_t ret, Error *err); 590 591void start_client_init(VncState *vs); 592void start_auth_vnc(VncState *vs); 593 594 595/* Misc helpers */ 596 597static inline uint32_t vnc_has_feature(VncState *vs, int feature) { 598 return (vs->features & (1 << feature)); 599} 600 601/* Framebuffer */ 602void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, 603 int32_t encoding); 604 605/* server fb is in PIXMAN_x8r8g8b8 */ 606#define VNC_SERVER_FB_FORMAT PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8) 607#define VNC_SERVER_FB_BITS (PIXMAN_FORMAT_BPP(VNC_SERVER_FB_FORMAT)) 608#define VNC_SERVER_FB_BYTES ((VNC_SERVER_FB_BITS+7)/8) 609 610void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y); 611int vnc_server_fb_stride(VncDisplay *vd); 612 613void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v); 614double vnc_update_freq(VncState *vs, int x, int y, int w, int h); 615void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h); 616 617/* Encodings */ 618int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 619 620int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 621 622int vnc_hextile_send_framebuffer_update(VncState *vs, int x, 623 int y, int w, int h); 624void vnc_hextile_set_pixel_conversion(VncState *vs, int generic); 625 626void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size); 627void vnc_zlib_zfree(void *x, void *addr); 628int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 629void vnc_zlib_clear(VncState *vs); 630 631int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 632int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y, 633 int w, int h); 634void vnc_tight_clear(VncState *vs); 635 636int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 637int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 638void vnc_zrle_clear(VncState *vs); 639 640/* vnc-clipboard.c */ 641void vnc_server_cut_text_caps(VncState *vs); 642void vnc_client_cut_text(VncState *vs, size_t len, uint8_t *text); 643void vnc_client_cut_text_ext(VncState *vs, int32_t len, uint32_t flags, uint8_t *data); 644 645#endif /* QEMU_VNC_H */