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
63 typedef struct VncState VncState;
64 typedef struct VncJob VncJob;
65 typedef struct VncRect VncRect;
66 typedef struct VncRectEntry VncRectEntry;
67
68 typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len);
69
70 typedef void VncWritePixels(VncState *vs, void *data, int size);
71
72 typedef 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(5120, VNC_DIRTY_PIXELS_PER_BIT)
85 #define VNC_MAX_HEIGHT 2160
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
100 typedef 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
108 struct 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
118 typedef struct VncRectStat VncRectStat;
119
120 struct 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
130 typedef 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
137 typedef enum VncSharePolicy {
138 VNC_SHARE_POLICY_IGNORE = 1,
139 VNC_SHARE_POLICY_ALLOW_EXCLUSIVE,
140 VNC_SHARE_POLICY_FORCE_SHARED,
141 } VncSharePolicy;
142
143 struct 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 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_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 QemuClipboardPeer cbpeer;
352 QemuClipboardInfo *cbinfo;
353 uint32_t cbpending;
354
355 QTAILQ_ENTRY(VncState) next;
356 };
357
358
359 /*****************************************************************************
360 *
361 * Authentication modes
362 *
363 *****************************************************************************/
364
365 enum {
366 VNC_AUTH_INVALID = 0,
367 VNC_AUTH_NONE = 1,
368 VNC_AUTH_VNC = 2,
369 VNC_AUTH_RA2 = 5,
370 VNC_AUTH_RA2NE = 6,
371 VNC_AUTH_TIGHT = 16,
372 VNC_AUTH_ULTRA = 17,
373 VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */
374 VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */
375 VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */
376 };
377
378 enum {
379 VNC_AUTH_VENCRYPT_PLAIN = 256,
380 VNC_AUTH_VENCRYPT_TLSNONE = 257,
381 VNC_AUTH_VENCRYPT_TLSVNC = 258,
382 VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
383 VNC_AUTH_VENCRYPT_X509NONE = 260,
384 VNC_AUTH_VENCRYPT_X509VNC = 261,
385 VNC_AUTH_VENCRYPT_X509PLAIN = 262,
386 VNC_AUTH_VENCRYPT_X509SASL = 263,
387 VNC_AUTH_VENCRYPT_TLSSASL = 264,
388 };
389
390
391 /*****************************************************************************
392 *
393 * Encoding types
394 *
395 *****************************************************************************/
396
397 #define VNC_ENCODING_RAW 0x00000000
398 #define VNC_ENCODING_COPYRECT 0x00000001
399 #define VNC_ENCODING_RRE 0x00000002
400 #define VNC_ENCODING_CORRE 0x00000004
401 #define VNC_ENCODING_HEXTILE 0x00000005
402 #define VNC_ENCODING_ZLIB 0x00000006
403 #define VNC_ENCODING_TIGHT 0x00000007
404 #define VNC_ENCODING_ZLIBHEX 0x00000008
405 #define VNC_ENCODING_TRLE 0x0000000f
406 #define VNC_ENCODING_ZRLE 0x00000010
407 #define VNC_ENCODING_ZYWRLE 0x00000011
408 #define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */
409 #define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */
410 #define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */
411 #define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */
412 #define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */
413 #define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */
414 #define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */
415 #define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */
416 #define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */
417 #define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */
418 #define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */
419 #define VNC_ENCODING_LED_STATE 0XFFFFFEFB /* -261 */
420 #define VNC_ENCODING_DESKTOP_RESIZE_EXT 0XFFFFFECC /* -308 */
421 #define VNC_ENCODING_XVP 0XFFFFFECB /* -309 */
422 #define VNC_ENCODING_ALPHA_CURSOR 0XFFFFFEC6 /* -314 */
423 #define VNC_ENCODING_WMVi 0x574D5669
424 #define VNC_ENCODING_CLIPBOARD_EXT 0xc0a1e5ce
425
426 /*****************************************************************************
427 *
428 * Other tight constants
429 *
430 *****************************************************************************/
431
432 /*
433 * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC.
434 */
435
436 #define VNC_TIGHT_CCB_RESET_MASK (0x0f)
437 #define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4)
438 #define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4)
439 #define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4)
440 #define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4)
441 #define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4)
442 #define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4)
443 #define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4)
444
445 /*****************************************************************************
446 *
447 * Features
448 *
449 *****************************************************************************/
450
451 enum VncFeatures {
452 VNC_FEATURE_RESIZE,
453 VNC_FEATURE_RESIZE_EXT,
454 VNC_FEATURE_HEXTILE,
455 VNC_FEATURE_POINTER_TYPE_CHANGE,
456 VNC_FEATURE_WMVI,
457 VNC_FEATURE_TIGHT,
458 VNC_FEATURE_ZLIB,
459 VNC_FEATURE_RICH_CURSOR,
460 VNC_FEATURE_ALPHA_CURSOR,
461 VNC_FEATURE_TIGHT_PNG,
462 VNC_FEATURE_ZRLE,
463 VNC_FEATURE_ZYWRLE,
464 VNC_FEATURE_LED_STATE,
465 VNC_FEATURE_XVP,
466 VNC_FEATURE_CLIPBOARD_EXT,
467 VNC_FEATURE_AUDIO,
468 };
469
470
471 /* Client -> Server message IDs */
472 #define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0
473 #define VNC_MSG_CLIENT_SET_ENCODINGS 2
474 #define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3
475 #define VNC_MSG_CLIENT_KEY_EVENT 4
476 #define VNC_MSG_CLIENT_POINTER_EVENT 5
477 #define VNC_MSG_CLIENT_CUT_TEXT 6
478 #define VNC_MSG_CLIENT_VMWARE_0 127
479 #define VNC_MSG_CLIENT_CALL_CONTROL 249
480 #define VNC_MSG_CLIENT_XVP 250
481 #define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251
482 #define VNC_MSG_CLIENT_TIGHT 252
483 #define VNC_MSG_CLIENT_GII 253
484 #define VNC_MSG_CLIENT_VMWARE_1 254
485 #define VNC_MSG_CLIENT_QEMU 255
486
487 /* Server -> Client message IDs */
488 #define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0
489 #define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1
490 #define VNC_MSG_SERVER_BELL 2
491 #define VNC_MSG_SERVER_CUT_TEXT 3
492 #define VNC_MSG_SERVER_VMWARE_0 127
493 #define VNC_MSG_SERVER_CALL_CONTROL 249
494 #define VNC_MSG_SERVER_XVP 250
495 #define VNC_MSG_SERVER_TIGHT 252
496 #define VNC_MSG_SERVER_GII 253
497 #define VNC_MSG_SERVER_VMWARE_1 254
498 #define VNC_MSG_SERVER_QEMU 255
499
500
501
502 /* QEMU client -> server message IDs */
503 #define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0
504 #define VNC_MSG_CLIENT_QEMU_AUDIO 1
505
506 /* QEMU server -> client message IDs */
507 #define VNC_MSG_SERVER_QEMU_AUDIO 1
508
509
510
511 /* QEMU client -> server audio message IDs */
512 #define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0
513 #define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1
514 #define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2
515
516 /* QEMU server -> client audio message IDs */
517 #define VNC_MSG_SERVER_QEMU_AUDIO_END 0
518 #define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1
519 #define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2
520
521 /* XVP server -> client status code */
522 #define VNC_XVP_CODE_FAIL 0
523 #define VNC_XVP_CODE_INIT 1
524
525 /* XVP client -> server action request */
526 #define VNC_XVP_ACTION_SHUTDOWN 2
527 #define VNC_XVP_ACTION_REBOOT 3
528 #define VNC_XVP_ACTION_RESET 4
529
530 /* extended clipboard flags */
531 #define VNC_CLIPBOARD_TEXT (1 << 0)
532 #define VNC_CLIPBOARD_RTF (1 << 1)
533 #define VNC_CLIPBOARD_HTML (1 << 2)
534 #define VNC_CLIPBOARD_DIB (1 << 3)
535 #define VNC_CLIPBOARD_FILES (1 << 4)
536 #define VNC_CLIPBOARD_CAPS (1 << 24)
537 #define VNC_CLIPBOARD_REQUEST (1 << 25)
538 #define VNC_CLIPBOARD_PEEK (1 << 26)
539 #define VNC_CLIPBOARD_NOTIFY (1 << 27)
540 #define VNC_CLIPBOARD_PROVIDE (1 << 28)
541
542 /*****************************************************************************
543 *
544 * Internal APIs
545 *
546 *****************************************************************************/
547
548 /* Event loop functions */
549 gboolean vnc_client_io(QIOChannel *ioc,
550 GIOCondition condition,
551 void *opaque);
552
553 size_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
554 size_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen);
555
556 /* Protocol I/O functions */
557 void vnc_write(VncState *vs, const void *data, size_t len);
558 void vnc_write_u32(VncState *vs, uint32_t value);
559 void vnc_write_s32(VncState *vs, int32_t value);
560 void vnc_write_u16(VncState *vs, uint16_t value);
561 void vnc_write_u8(VncState *vs, uint8_t value);
562 void vnc_flush(VncState *vs);
563 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting);
564 void vnc_disconnect_finish(VncState *vs);
565 void vnc_start_protocol(VncState *vs);
566
567
568 /* Buffer I/O functions */
569 uint32_t read_u32(uint8_t *data, size_t offset);
570
571 /* Protocol stage functions */
572 void vnc_client_error(VncState *vs);
573 size_t vnc_client_io_error(VncState *vs, ssize_t ret, Error *err);
574
575 void start_client_init(VncState *vs);
576 void start_auth_vnc(VncState *vs);
577
578
579 /* Misc helpers */
580
vnc_has_feature(VncState * vs,int feature)581 static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
582 return (vs->features & (1 << feature));
583 }
584
vnc_set_feature(VncState * vs,enum VncFeatures feature)585 static inline void vnc_set_feature(VncState *vs, enum VncFeatures feature)
586 {
587 vs->features |= (1 << feature);
588 }
589
590 /* Framebuffer */
591 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
592 int32_t encoding);
593
594 /* server fb is in PIXMAN_x8r8g8b8 */
595 #define VNC_SERVER_FB_FORMAT PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8)
596 #define VNC_SERVER_FB_BITS (PIXMAN_FORMAT_BPP(VNC_SERVER_FB_FORMAT))
597 #define VNC_SERVER_FB_BYTES ((VNC_SERVER_FB_BITS+7)/8)
598
599 void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y);
600 int vnc_server_fb_stride(VncDisplay *vd);
601
602 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v);
603 double vnc_update_freq(VncState *vs, int x, int y, int w, int h);
604 void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h);
605
606 /* Encodings */
607 int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
608
609 int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
610
611 int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
612 int y, int w, int h);
613 void vnc_hextile_set_pixel_conversion(VncState *vs, int generic);
614
615 void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size);
616 void vnc_zlib_zfree(void *x, void *addr);
617 int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
618 void vnc_zlib_clear(VncState *vs);
619
620 int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
621 int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y,
622 int w, int h);
623 void vnc_tight_clear(VncState *vs);
624
625 int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
626 int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
627 void vnc_zrle_clear(VncState *vs);
628
629 /* vnc-clipboard.c */
630 void vnc_server_cut_text_caps(VncState *vs);
631 void vnc_client_cut_text(VncState *vs, size_t len, uint8_t *text);
632 void vnc_client_cut_text_ext(VncState *vs, int32_t len, uint32_t flags, uint8_t *data);
633
634 #endif /* QEMU_VNC_H */
635