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 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 VMChangeStateEntry *vmstate_handler_entry;
190 };
191
192 typedef 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_PNG
205 Buffer png;
206 #endif
207 int levels[4];
208 z_stream stream[4];
209 } VncTight;
210
211 typedef struct VncHextile {
212 VncSendHextileTile *send_tile;
213 } VncHextile;
214
215 typedef struct VncZlib {
216 Buffer zlib;
217 Buffer tmp;
218 z_stream stream;
219 int level;
220 } VncZlib;
221
222 typedef 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
232 typedef struct VncZywrle {
233 int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT];
234 } VncZywrle;
235
236 struct VncRect
237 {
238 int x;
239 int y;
240 int w;
241 int h;
242 };
243
244 struct VncRectEntry
245 {
246 struct VncRect rect;
247 QLIST_ENTRY(VncRectEntry) next;
248 };
249
250 struct VncJob
251 {
252 VncState *vs;
253
254 QLIST_HEAD(, VncRectEntry) rectangles;
255 QTAILQ_ENTRY(VncJob) next;
256 };
257
258 typedef 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
266 struct 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
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 int client_endian; /* G_LITTLE_ENDIAN or G_BIG_ENDIAN */
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 VncHextile hextile;
343 VncZywrle zywrle;
344
345 Notifier mouse_mode_notifier;
346
347 QemuClipboardPeer cbpeer;
348 QemuClipboardInfo *cbinfo;
349 uint32_t cbpending;
350
351 QTAILQ_ENTRY(VncState) next;
352 };
353
354 typedef struct VncWorker {
355 uint8_t lossy_rect[VNC_STAT_ROWS][VNC_STAT_COLS];
356
357 VncTight tight;
358 VncZlib zlib;
359 VncZrle zrle;
360 } VncWorker;
361
362 typedef struct VncConnection {
363 VncState vs;
364 VncWorker worker;
365 } VncConnection;
366
367
368 /*****************************************************************************
369 *
370 * Authentication modes
371 *
372 *****************************************************************************/
373
374 enum {
375 VNC_AUTH_INVALID = 0,
376 VNC_AUTH_NONE = 1,
377 VNC_AUTH_VNC = 2,
378 VNC_AUTH_RA2 = 5,
379 VNC_AUTH_RA2NE = 6,
380 VNC_AUTH_TIGHT = 16,
381 VNC_AUTH_ULTRA = 17,
382 VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */
383 VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */
384 VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */
385 };
386
387 enum {
388 VNC_AUTH_VENCRYPT_PLAIN = 256,
389 VNC_AUTH_VENCRYPT_TLSNONE = 257,
390 VNC_AUTH_VENCRYPT_TLSVNC = 258,
391 VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
392 VNC_AUTH_VENCRYPT_X509NONE = 260,
393 VNC_AUTH_VENCRYPT_X509VNC = 261,
394 VNC_AUTH_VENCRYPT_X509PLAIN = 262,
395 VNC_AUTH_VENCRYPT_X509SASL = 263,
396 VNC_AUTH_VENCRYPT_TLSSASL = 264,
397 };
398
399
400 /*****************************************************************************
401 *
402 * Encoding types
403 *
404 *****************************************************************************/
405
406 #define VNC_ENCODING_RAW 0x00000000
407 #define VNC_ENCODING_COPYRECT 0x00000001
408 #define VNC_ENCODING_RRE 0x00000002
409 #define VNC_ENCODING_CORRE 0x00000004
410 #define VNC_ENCODING_HEXTILE 0x00000005
411 #define VNC_ENCODING_ZLIB 0x00000006
412 #define VNC_ENCODING_TIGHT 0x00000007
413 #define VNC_ENCODING_ZLIBHEX 0x00000008
414 #define VNC_ENCODING_TRLE 0x0000000f
415 #define VNC_ENCODING_ZRLE 0x00000010
416 #define VNC_ENCODING_ZYWRLE 0x00000011
417 #define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */
418 #define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */
419 #define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */
420 #define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */
421 #define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */
422 #define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */
423 #define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */
424 #define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */
425 #define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */
426 #define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */
427 #define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */
428 #define VNC_ENCODING_LED_STATE 0XFFFFFEFB /* -261 */
429 #define VNC_ENCODING_DESKTOP_RESIZE_EXT 0XFFFFFECC /* -308 */
430 #define VNC_ENCODING_XVP 0XFFFFFECB /* -309 */
431 #define VNC_ENCODING_ALPHA_CURSOR 0XFFFFFEC6 /* -314 */
432 #define VNC_ENCODING_WMVi 0x574D5669
433 #define VNC_ENCODING_CLIPBOARD_EXT 0xc0a1e5ce
434
435 /*****************************************************************************
436 *
437 * Other tight constants
438 *
439 *****************************************************************************/
440
441 /*
442 * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC.
443 */
444
445 #define VNC_TIGHT_CCB_RESET_MASK (0x0f)
446 #define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4)
447 #define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4)
448 #define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4)
449 #define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4)
450 #define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4)
451 #define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4)
452 #define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4)
453
454 /*****************************************************************************
455 *
456 * Features
457 *
458 *****************************************************************************/
459
460 enum VncFeatures {
461 VNC_FEATURE_RESIZE,
462 VNC_FEATURE_RESIZE_EXT,
463 VNC_FEATURE_HEXTILE,
464 VNC_FEATURE_POINTER_TYPE_CHANGE,
465 VNC_FEATURE_WMVI,
466 VNC_FEATURE_TIGHT,
467 VNC_FEATURE_ZLIB,
468 VNC_FEATURE_RICH_CURSOR,
469 VNC_FEATURE_ALPHA_CURSOR,
470 VNC_FEATURE_TIGHT_PNG,
471 VNC_FEATURE_ZRLE,
472 VNC_FEATURE_ZYWRLE,
473 VNC_FEATURE_LED_STATE,
474 VNC_FEATURE_XVP,
475 VNC_FEATURE_CLIPBOARD_EXT,
476 VNC_FEATURE_AUDIO,
477 };
478
479
480 /* Client -> Server message IDs */
481 #define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0
482 #define VNC_MSG_CLIENT_SET_ENCODINGS 2
483 #define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3
484 #define VNC_MSG_CLIENT_KEY_EVENT 4
485 #define VNC_MSG_CLIENT_POINTER_EVENT 5
486 #define VNC_MSG_CLIENT_CUT_TEXT 6
487 #define VNC_MSG_CLIENT_VMWARE_0 127
488 #define VNC_MSG_CLIENT_CALL_CONTROL 249
489 #define VNC_MSG_CLIENT_XVP 250
490 #define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251
491 #define VNC_MSG_CLIENT_TIGHT 252
492 #define VNC_MSG_CLIENT_GII 253
493 #define VNC_MSG_CLIENT_VMWARE_1 254
494 #define VNC_MSG_CLIENT_QEMU 255
495
496 /* Server -> Client message IDs */
497 #define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0
498 #define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1
499 #define VNC_MSG_SERVER_BELL 2
500 #define VNC_MSG_SERVER_CUT_TEXT 3
501 #define VNC_MSG_SERVER_VMWARE_0 127
502 #define VNC_MSG_SERVER_CALL_CONTROL 249
503 #define VNC_MSG_SERVER_XVP 250
504 #define VNC_MSG_SERVER_TIGHT 252
505 #define VNC_MSG_SERVER_GII 253
506 #define VNC_MSG_SERVER_VMWARE_1 254
507 #define VNC_MSG_SERVER_QEMU 255
508
509
510
511 /* QEMU client -> server message IDs */
512 #define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0
513 #define VNC_MSG_CLIENT_QEMU_AUDIO 1
514
515 /* QEMU server -> client message IDs */
516 #define VNC_MSG_SERVER_QEMU_AUDIO 1
517
518
519
520 /* QEMU client -> server audio message IDs */
521 #define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0
522 #define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1
523 #define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2
524
525 /* QEMU server -> client audio message IDs */
526 #define VNC_MSG_SERVER_QEMU_AUDIO_END 0
527 #define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1
528 #define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2
529
530 /* XVP server -> client status code */
531 #define VNC_XVP_CODE_FAIL 0
532 #define VNC_XVP_CODE_INIT 1
533
534 /* XVP client -> server action request */
535 #define VNC_XVP_ACTION_SHUTDOWN 2
536 #define VNC_XVP_ACTION_REBOOT 3
537 #define VNC_XVP_ACTION_RESET 4
538
539 /* extended clipboard flags */
540 #define VNC_CLIPBOARD_TEXT (1 << 0)
541 #define VNC_CLIPBOARD_RTF (1 << 1)
542 #define VNC_CLIPBOARD_HTML (1 << 2)
543 #define VNC_CLIPBOARD_DIB (1 << 3)
544 #define VNC_CLIPBOARD_FILES (1 << 4)
545 #define VNC_CLIPBOARD_CAPS (1 << 24)
546 #define VNC_CLIPBOARD_REQUEST (1 << 25)
547 #define VNC_CLIPBOARD_PEEK (1 << 26)
548 #define VNC_CLIPBOARD_NOTIFY (1 << 27)
549 #define VNC_CLIPBOARD_PROVIDE (1 << 28)
550
551 /*****************************************************************************
552 *
553 * Internal APIs
554 *
555 *****************************************************************************/
556
557 /* Event loop functions */
558 gboolean vnc_client_io(QIOChannel *ioc,
559 GIOCondition condition,
560 void *opaque);
561
562 size_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
563 size_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen);
564
565 /* Protocol I/O functions */
566 void vnc_write(VncState *vs, const void *data, size_t len);
567 void vnc_write_u32(VncState *vs, uint32_t value);
568 void vnc_write_s32(VncState *vs, int32_t value);
569 void vnc_write_u16(VncState *vs, uint16_t value);
570 void vnc_write_u8(VncState *vs, uint8_t value);
571 void vnc_flush(VncState *vs);
572 void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting);
573 void vnc_disconnect_finish(VncState *vs);
574 void vnc_start_protocol(VncState *vs);
575
576
577 /* Buffer I/O functions */
578 uint32_t read_u32(uint8_t *data, size_t offset);
579
580 /* Protocol stage functions */
581 void vnc_client_error(VncState *vs);
582 size_t vnc_client_io_error(VncState *vs, ssize_t ret, Error *err);
583
584 void start_client_init(VncState *vs);
585 void start_auth_vnc(VncState *vs);
586
587
588 /* Misc helpers */
589
vnc_has_feature(VncState * vs,int feature)590 static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
591 return (vs->features & (1 << feature));
592 }
593
vnc_set_feature(VncState * vs,enum VncFeatures feature)594 static inline void vnc_set_feature(VncState *vs, enum VncFeatures feature)
595 {
596 vs->features |= (1 << feature);
597 }
598
599 /* Framebuffer */
600 void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
601 int32_t encoding);
602
603 /* server fb is in PIXMAN_x8r8g8b8 */
604 #define VNC_SERVER_FB_FORMAT PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8)
605 #define VNC_SERVER_FB_BITS (PIXMAN_FORMAT_BPP(VNC_SERVER_FB_FORMAT))
606 #define VNC_SERVER_FB_BYTES ((VNC_SERVER_FB_BITS+7)/8)
607
608 void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y);
609 int vnc_server_fb_stride(VncDisplay *vd);
610
611 void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v);
612 double vnc_update_freq(VncState *vs, int x, int y, int w, int h);
613 void vnc_sent_lossy_rect(VncWorker *worker, int x, int y, int w, int h);
614
615 /* Encodings */
616 int vnc_send_framebuffer_update(VncState *vs, VncWorker *worker,
617 int x, int y, int w, int h);
618
619 int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
620
621 int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
622 int y, int w, int h);
623 void vnc_hextile_set_pixel_conversion(VncState *vs, int generic);
624
625 void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size);
626 void vnc_zlib_zfree(void *x, void *addr);
627 int vnc_zlib_send_framebuffer_update(VncState *vs, VncWorker *worker,
628 int x, int y, int w, int h);
629 void vnc_zlib_clear(VncWorker *worker);
630
631 int vnc_tight_send_framebuffer_update(VncState *vs, VncWorker *worker,
632 int x, int y, int w, int h);
633 int vnc_tight_png_send_framebuffer_update(VncState *vs, VncWorker *worker,
634 int x, int y, int w, int h);
635 void vnc_tight_clear(VncWorker *worker);
636
637 int vnc_zrle_send_framebuffer_update(VncState *vs, VncWorker *worker,
638 int x, int y, int w, int h);
639 int vnc_zywrle_send_framebuffer_update(VncState *vs, VncWorker *worker,
640 int x, int y, int w, int h);
641 void vnc_zrle_clear(VncWorker *worker);
642
643 /* vnc-clipboard.c */
644 void vnc_server_cut_text_caps(VncState *vs);
645 void vnc_client_cut_text(VncState *vs, size_t len, uint8_t *text);
646 void vnc_client_cut_text_ext(VncState *vs, int32_t len, uint32_t flags, uint8_t *data);
647
648 #endif /* QEMU_VNC_H */
649