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 int true_width; /* server surface width before rounding up */ 168 169 const char *id; 170 QTAILQ_ENTRY(VncDisplay) next; 171 bool is_unix; 172 char *password; 173 time_t expires; 174 int auth; 175 int subauth; /* Used by VeNCrypt */ 176 int ws_auth; /* Used by websockets */ 177 int ws_subauth; /* Used by websockets */ 178 bool lossy; 179 bool non_adaptive; 180 bool power_control; 181 QCryptoTLSCreds *tlscreds; 182 QAuthZ *tlsauthz; 183 char *tlsauthzid; 184 #ifdef CONFIG_VNC_SASL 185 VncDisplaySASL sasl; 186 #endif 187 188 AudioState *audio_state; 189 }; 190 191 typedef struct VncTight { 192 int type; 193 uint8_t quality; 194 uint8_t compression; 195 uint8_t pixel24; 196 Buffer tight; 197 Buffer tmp; 198 Buffer zlib; 199 Buffer gradient; 200 #ifdef CONFIG_VNC_JPEG 201 Buffer jpeg; 202 #endif 203 #ifdef CONFIG_VNC_PNG 204 Buffer png; 205 #endif 206 int levels[4]; 207 z_stream stream[4]; 208 } VncTight; 209 210 typedef struct VncHextile { 211 VncSendHextileTile *send_tile; 212 } VncHextile; 213 214 typedef struct VncZlib { 215 Buffer zlib; 216 Buffer tmp; 217 z_stream stream; 218 int level; 219 } VncZlib; 220 221 typedef struct VncZrle { 222 int type; 223 Buffer fb; 224 Buffer zrle; 225 Buffer tmp; 226 Buffer zlib; 227 z_stream stream; 228 VncPalette palette; 229 } VncZrle; 230 231 typedef struct VncZywrle { 232 int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT]; 233 } VncZywrle; 234 235 struct VncRect 236 { 237 int x; 238 int y; 239 int w; 240 int h; 241 }; 242 243 struct VncRectEntry 244 { 245 struct VncRect rect; 246 QLIST_ENTRY(VncRectEntry) next; 247 }; 248 249 struct VncJob 250 { 251 VncState *vs; 252 253 QLIST_HEAD(, VncRectEntry) rectangles; 254 QTAILQ_ENTRY(VncJob) next; 255 }; 256 257 typedef enum { 258 VNC_STATE_UPDATE_NONE, 259 VNC_STATE_UPDATE_INCREMENTAL, 260 VNC_STATE_UPDATE_FORCE, 261 } VncStateUpdate; 262 263 #define VNC_MAGIC ((uint64_t)0x05b3f069b3d204bb) 264 265 struct VncState 266 { 267 uint64_t magic; 268 QIOChannelSocket *sioc; /* The underlying socket */ 269 QIOChannel *ioc; /* The channel currently used for I/O */ 270 guint ioc_tag; 271 gboolean disconnecting; 272 273 DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_DIRTY_BITS); 274 uint8_t **lossy_rect; /* Not an Array to avoid costly memcpy in 275 * vnc-jobs-async.c */ 276 277 VncDisplay *vd; 278 VncStateUpdate update; /* Most recent pending request from client */ 279 VncStateUpdate job_update; /* Currently processed by job thread */ 280 int has_dirty; 281 uint32_t features; 282 int absolute; 283 int last_x; 284 int last_y; 285 uint32_t last_bmask; 286 size_t client_width; /* limited to u16 by RFB proto */ 287 size_t client_height; /* limited to u16 by RFB proto */ 288 VncShareMode share_mode; 289 290 uint32_t vnc_encoding; 291 292 int major; 293 int minor; 294 295 int auth; 296 int subauth; /* Used by VeNCrypt */ 297 char challenge[VNC_AUTH_CHALLENGE_SIZE]; 298 QCryptoTLSSession *tls; /* Borrowed pointer from channel, don't free */ 299 #ifdef CONFIG_VNC_SASL 300 VncStateSASL sasl; 301 #endif 302 bool encode_ws; 303 bool websocket; 304 305 #ifdef CONFIG_VNC 306 VncClientInfo *info; 307 #endif 308 309 /* Job thread bottom half has put data for a forced update 310 * into the output buffer. This offset points to the end of 311 * the update data in the output buffer. This lets us determine 312 * when a force update is fully sent to the client, allowing 313 * us to process further forced updates. */ 314 size_t force_update_offset; 315 /* We allow multiple incremental updates or audio capture 316 * samples to be queued in output buffer, provided the 317 * buffer size doesn't exceed this threshold. The value 318 * is calculating dynamically based on framebuffer size 319 * and audio sample settings in vnc_update_throttle_offset() */ 320 size_t throttle_output_offset; 321 Buffer output; 322 Buffer input; 323 /* current output mode information */ 324 VncWritePixels *write_pixels; 325 PixelFormat client_pf; 326 pixman_format_code_t client_format; 327 bool client_be; 328 329 CaptureVoiceOut *audio_cap; 330 struct audsettings as; 331 332 VncReadEvent *read_handler; 333 size_t read_handler_expect; 334 335 bool abort; 336 QemuMutex output_mutex; 337 QEMUBH *bh; 338 Buffer jobs_buffer; 339 340 /* Encoding specific, if you add something here, don't forget to 341 * update vnc_async_encoding_start() 342 */ 343 VncTight *tight; 344 VncZlib zlib; 345 VncHextile hextile; 346 VncZrle *zrle; 347 VncZywrle zywrle; 348 349 Notifier mouse_mode_notifier; 350 351 QTAILQ_ENTRY(VncState) next; 352 }; 353 354 355 /***************************************************************************** 356 * 357 * Authentication modes 358 * 359 *****************************************************************************/ 360 361 enum { 362 VNC_AUTH_INVALID = 0, 363 VNC_AUTH_NONE = 1, 364 VNC_AUTH_VNC = 2, 365 VNC_AUTH_RA2 = 5, 366 VNC_AUTH_RA2NE = 6, 367 VNC_AUTH_TIGHT = 16, 368 VNC_AUTH_ULTRA = 17, 369 VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */ 370 VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */ 371 VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */ 372 }; 373 374 enum { 375 VNC_AUTH_VENCRYPT_PLAIN = 256, 376 VNC_AUTH_VENCRYPT_TLSNONE = 257, 377 VNC_AUTH_VENCRYPT_TLSVNC = 258, 378 VNC_AUTH_VENCRYPT_TLSPLAIN = 259, 379 VNC_AUTH_VENCRYPT_X509NONE = 260, 380 VNC_AUTH_VENCRYPT_X509VNC = 261, 381 VNC_AUTH_VENCRYPT_X509PLAIN = 262, 382 VNC_AUTH_VENCRYPT_X509SASL = 263, 383 VNC_AUTH_VENCRYPT_TLSSASL = 264, 384 }; 385 386 387 /***************************************************************************** 388 * 389 * Encoding types 390 * 391 *****************************************************************************/ 392 393 #define VNC_ENCODING_RAW 0x00000000 394 #define VNC_ENCODING_COPYRECT 0x00000001 395 #define VNC_ENCODING_RRE 0x00000002 396 #define VNC_ENCODING_CORRE 0x00000004 397 #define VNC_ENCODING_HEXTILE 0x00000005 398 #define VNC_ENCODING_ZLIB 0x00000006 399 #define VNC_ENCODING_TIGHT 0x00000007 400 #define VNC_ENCODING_ZLIBHEX 0x00000008 401 #define VNC_ENCODING_TRLE 0x0000000f 402 #define VNC_ENCODING_ZRLE 0x00000010 403 #define VNC_ENCODING_ZYWRLE 0x00000011 404 #define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */ 405 #define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */ 406 #define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */ 407 #define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */ 408 #define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */ 409 #define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */ 410 #define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */ 411 #define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */ 412 #define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */ 413 #define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */ 414 #define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */ 415 #define VNC_ENCODING_LED_STATE 0XFFFFFEFB /* -261 */ 416 #define VNC_ENCODING_DESKTOP_RESIZE_EXT 0XFFFFFECC /* -308 */ 417 #define VNC_ENCODING_XVP 0XFFFFFECB /* -309 */ 418 #define VNC_ENCODING_ALPHA_CURSOR 0XFFFFFEC6 /* -314 */ 419 #define VNC_ENCODING_WMVi 0x574D5669 420 421 /***************************************************************************** 422 * 423 * Other tight constants 424 * 425 *****************************************************************************/ 426 427 /* 428 * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC. 429 */ 430 431 #define VNC_TIGHT_CCB_RESET_MASK (0x0f) 432 #define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4) 433 #define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4) 434 #define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4) 435 #define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4) 436 #define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4) 437 #define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4) 438 #define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4) 439 440 /***************************************************************************** 441 * 442 * Features 443 * 444 *****************************************************************************/ 445 446 enum VncFeatures { 447 VNC_FEATURE_RESIZE, 448 VNC_FEATURE_RESIZE_EXT, 449 VNC_FEATURE_HEXTILE, 450 VNC_FEATURE_POINTER_TYPE_CHANGE, 451 VNC_FEATURE_WMVI, 452 VNC_FEATURE_TIGHT, 453 VNC_FEATURE_ZLIB, 454 VNC_FEATURE_RICH_CURSOR, 455 VNC_FEATURE_ALPHA_CURSOR, 456 VNC_FEATURE_TIGHT_PNG, 457 VNC_FEATURE_ZRLE, 458 VNC_FEATURE_ZYWRLE, 459 VNC_FEATURE_LED_STATE, 460 VNC_FEATURE_XVP, 461 }; 462 463 #define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE) 464 #define VNC_FEATURE_RESIZE_EXT_MASK (1 << VNC_FEATURE_RESIZE_EXT) 465 #define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE) 466 #define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE) 467 #define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI) 468 #define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT) 469 #define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB) 470 #define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR) 471 #define VNC_FEATURE_ALPHA_CURSOR_MASK (1 << VNC_FEATURE_ALPHA_CURSOR) 472 #define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG) 473 #define VNC_FEATURE_ZRLE_MASK (1 << VNC_FEATURE_ZRLE) 474 #define VNC_FEATURE_ZYWRLE_MASK (1 << VNC_FEATURE_ZYWRLE) 475 #define VNC_FEATURE_LED_STATE_MASK (1 << VNC_FEATURE_LED_STATE) 476 #define VNC_FEATURE_XVP_MASK (1 << VNC_FEATURE_XVP) 477 478 479 /* Client -> Server message IDs */ 480 #define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0 481 #define VNC_MSG_CLIENT_SET_ENCODINGS 2 482 #define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3 483 #define VNC_MSG_CLIENT_KEY_EVENT 4 484 #define VNC_MSG_CLIENT_POINTER_EVENT 5 485 #define VNC_MSG_CLIENT_CUT_TEXT 6 486 #define VNC_MSG_CLIENT_VMWARE_0 127 487 #define VNC_MSG_CLIENT_CALL_CONTROL 249 488 #define VNC_MSG_CLIENT_XVP 250 489 #define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251 490 #define VNC_MSG_CLIENT_TIGHT 252 491 #define VNC_MSG_CLIENT_GII 253 492 #define VNC_MSG_CLIENT_VMWARE_1 254 493 #define VNC_MSG_CLIENT_QEMU 255 494 495 /* Server -> Client message IDs */ 496 #define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0 497 #define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1 498 #define VNC_MSG_SERVER_BELL 2 499 #define VNC_MSG_SERVER_CUT_TEXT 3 500 #define VNC_MSG_SERVER_VMWARE_0 127 501 #define VNC_MSG_SERVER_CALL_CONTROL 249 502 #define VNC_MSG_SERVER_XVP 250 503 #define VNC_MSG_SERVER_TIGHT 252 504 #define VNC_MSG_SERVER_GII 253 505 #define VNC_MSG_SERVER_VMWARE_1 254 506 #define VNC_MSG_SERVER_QEMU 255 507 508 509 510 /* QEMU client -> server message IDs */ 511 #define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0 512 #define VNC_MSG_CLIENT_QEMU_AUDIO 1 513 514 /* QEMU server -> client message IDs */ 515 #define VNC_MSG_SERVER_QEMU_AUDIO 1 516 517 518 519 /* QEMU client -> server audio message IDs */ 520 #define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0 521 #define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1 522 #define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2 523 524 /* QEMU server -> client audio message IDs */ 525 #define VNC_MSG_SERVER_QEMU_AUDIO_END 0 526 #define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1 527 #define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2 528 529 /* XVP server -> client status code */ 530 #define VNC_XVP_CODE_FAIL 0 531 #define VNC_XVP_CODE_INIT 1 532 533 /* XVP client -> server action request */ 534 #define VNC_XVP_ACTION_SHUTDOWN 2 535 #define VNC_XVP_ACTION_REBOOT 3 536 #define VNC_XVP_ACTION_RESET 4 537 538 539 /***************************************************************************** 540 * 541 * Internal APIs 542 * 543 *****************************************************************************/ 544 545 /* Event loop functions */ 546 gboolean vnc_client_io(QIOChannel *ioc, 547 GIOCondition condition, 548 void *opaque); 549 550 size_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen); 551 size_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen); 552 553 /* Protocol I/O functions */ 554 void vnc_write(VncState *vs, const void *data, size_t len); 555 void vnc_write_u32(VncState *vs, uint32_t value); 556 void vnc_write_s32(VncState *vs, int32_t value); 557 void vnc_write_u16(VncState *vs, uint16_t value); 558 void vnc_write_u8(VncState *vs, uint8_t value); 559 void vnc_flush(VncState *vs); 560 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting); 561 void vnc_disconnect_finish(VncState *vs); 562 void vnc_start_protocol(VncState *vs); 563 564 565 /* Buffer I/O functions */ 566 uint32_t read_u32(uint8_t *data, size_t offset); 567 568 /* Protocol stage functions */ 569 void vnc_client_error(VncState *vs); 570 size_t vnc_client_io_error(VncState *vs, ssize_t ret, Error *err); 571 572 void start_client_init(VncState *vs); 573 void start_auth_vnc(VncState *vs); 574 575 576 /* Misc helpers */ 577 578 static inline uint32_t vnc_has_feature(VncState *vs, int feature) { 579 return (vs->features & (1 << feature)); 580 } 581 582 /* Framebuffer */ 583 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, 584 int32_t encoding); 585 586 /* server fb is in PIXMAN_x8r8g8b8 */ 587 #define VNC_SERVER_FB_FORMAT PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8) 588 #define VNC_SERVER_FB_BITS (PIXMAN_FORMAT_BPP(VNC_SERVER_FB_FORMAT)) 589 #define VNC_SERVER_FB_BYTES ((VNC_SERVER_FB_BITS+7)/8) 590 591 void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y); 592 int vnc_server_fb_stride(VncDisplay *vd); 593 594 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v); 595 double vnc_update_freq(VncState *vs, int x, int y, int w, int h); 596 void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h); 597 598 /* Encodings */ 599 int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 600 601 int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 602 603 int vnc_hextile_send_framebuffer_update(VncState *vs, int x, 604 int y, int w, int h); 605 void vnc_hextile_set_pixel_conversion(VncState *vs, int generic); 606 607 void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size); 608 void vnc_zlib_zfree(void *x, void *addr); 609 int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 610 void vnc_zlib_clear(VncState *vs); 611 612 int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 613 int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y, 614 int w, int h); 615 void vnc_tight_clear(VncState *vs); 616 617 int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 618 int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); 619 void vnc_zrle_clear(VncState *vs); 620 621 #endif /* QEMU_VNC_H */ 622