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