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/*
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* QEMU VNC display driver
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*
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* Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
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* Copyright (C) 2006 Fabrice Bellard
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* Copyright (C) 2009 Red Hat, Inc
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef __QEMU_VNC_H
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#define __QEMU_VNC_H
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#include "qemu-common.h" |
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#include "qemu-queue.h" |
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#ifdef CONFIG_VNC_THREAD
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#include "qemu-thread.h" |
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#endif
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#include "console.h" |
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#include "monitor.h" |
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#include "audio/audio.h" |
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#include "bitmap.h" |
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#include <zlib.h> |
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#include <stdbool.h> |
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#include "keymaps.h" |
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#include "vnc-palette.h" |
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#include "vnc-enc-zrle.h" |
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// #define _VNC_DEBUG 1
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#ifdef _VNC_DEBUG
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#define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
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#else
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#define VNC_DEBUG(fmt, ...) do { } while (0) |
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#endif
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/*****************************************************************************
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*
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* Core data structures
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*
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*****************************************************************************/
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typedef struct Buffer |
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{ |
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size_t capacity; |
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size_t offset; |
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uint8_t *buffer; |
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} Buffer; |
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typedef struct VncState VncState; |
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typedef struct VncJob VncJob; |
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typedef struct VncRect VncRect; |
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typedef struct VncRectEntry VncRectEntry; |
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typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len); |
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typedef void VncWritePixels(VncState *vs, struct PixelFormat *pf, void *data, int size); |
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typedef void VncSendHextileTile(VncState *vs, |
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int x, int y, int w, int h, |
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void *last_bg,
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void *last_fg,
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int *has_bg, int *has_fg); |
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/* VNC_MAX_WIDTH must be a multiple of 16. */
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#define VNC_MAX_WIDTH 2560 |
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#define VNC_MAX_HEIGHT 2048 |
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/* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */
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#define VNC_DIRTY_BITS (VNC_MAX_WIDTH / 16) |
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#define VNC_STAT_RECT 64 |
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#define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT)
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#define VNC_STAT_ROWS (VNC_MAX_HEIGHT / VNC_STAT_RECT)
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#define VNC_AUTH_CHALLENGE_SIZE 16 |
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typedef struct VncDisplay VncDisplay; |
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#ifdef CONFIG_VNC_TLS
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#include "vnc-tls.h" |
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#include "vnc-auth-vencrypt.h" |
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#endif
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#ifdef CONFIG_VNC_SASL
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#include "vnc-auth-sasl.h" |
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#endif
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struct VncRectStat
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{ |
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/* time of last 10 updates, to find update frequency */
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struct timeval times[10]; |
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int idx;
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double freq; /* Update frequency (in Hz) */ |
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bool updated; /* Already updated during this refresh */ |
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}; |
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typedef struct VncRectStat VncRectStat; |
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struct VncSurface
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{ |
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struct timeval last_freq_check;
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DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_MAX_WIDTH / 16);
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VncRectStat stats[VNC_STAT_ROWS][VNC_STAT_COLS]; |
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DisplaySurface *ds; |
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}; |
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struct VncDisplay
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{ |
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QTAILQ_HEAD(, VncState) clients; |
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QEMUTimer *timer; |
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int timer_interval;
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int lsock;
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DisplayState *ds; |
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kbd_layout_t *kbd_layout; |
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int lock_key_sync;
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#ifdef CONFIG_VNC_THREAD
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QemuMutex mutex; |
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#endif
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QEMUCursor *cursor; |
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int cursor_msize;
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uint8_t *cursor_mask; |
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struct VncSurface guest; /* guest visible surface (aka ds->surface) */ |
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DisplaySurface *server; /* vnc server surface */
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char *display;
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char *password;
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time_t expires; |
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int auth;
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bool lossy;
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bool non_adaptive;
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#ifdef CONFIG_VNC_TLS
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int subauth; /* Used by VeNCrypt */ |
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VncDisplayTLS tls; |
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#endif
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#ifdef CONFIG_VNC_SASL
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VncDisplaySASL sasl; |
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#endif
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}; |
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typedef struct VncTight { |
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int type;
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uint8_t quality; |
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uint8_t compression; |
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uint8_t pixel24; |
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Buffer tight; |
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Buffer tmp; |
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Buffer zlib; |
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Buffer gradient; |
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#ifdef CONFIG_VNC_JPEG
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Buffer jpeg; |
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#endif
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#ifdef CONFIG_VNC_PNG
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Buffer png; |
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#endif
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int levels[4]; |
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z_stream stream[4];
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} VncTight; |
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typedef struct VncHextile { |
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VncSendHextileTile *send_tile; |
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} VncHextile; |
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typedef struct VncZlib { |
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Buffer zlib; |
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Buffer tmp; |
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z_stream stream; |
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int level;
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} VncZlib; |
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typedef struct VncZrle { |
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int type;
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Buffer fb; |
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Buffer zrle; |
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Buffer tmp; |
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Buffer zlib; |
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z_stream stream; |
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VncPalette palette; |
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} VncZrle; |
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typedef struct VncZywrle { |
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int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT];
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} VncZywrle; |
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#ifdef CONFIG_VNC_THREAD
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struct VncRect
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{ |
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int x;
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int y;
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int w;
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int h;
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}; |
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struct VncRectEntry
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{ |
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struct VncRect rect;
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QLIST_ENTRY(VncRectEntry) next; |
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}; |
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struct VncJob
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{ |
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VncState *vs; |
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QLIST_HEAD(, VncRectEntry) rectangles; |
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QTAILQ_ENTRY(VncJob) next; |
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}; |
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#else
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struct VncJob
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{ |
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VncState *vs; |
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int rectangles;
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size_t saved_offset; |
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}; |
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#endif
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struct VncState
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{ |
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int csock;
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DisplayState *ds; |
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DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_DIRTY_BITS); |
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uint8_t **lossy_rect; /* Not an Array to avoid costly memcpy in
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* vnc-jobs-async.c */
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VncDisplay *vd; |
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int need_update;
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int force_update;
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uint32_t features; |
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int absolute;
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int last_x;
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int last_y;
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int client_width;
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int client_height;
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uint32_t vnc_encoding; |
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int major;
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int minor;
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int auth;
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char challenge[VNC_AUTH_CHALLENGE_SIZE];
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#ifdef CONFIG_VNC_TLS
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int subauth; /* Used by VeNCrypt */ |
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VncStateTLS tls; |
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#endif
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#ifdef CONFIG_VNC_SASL
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VncStateSASL sasl; |
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#endif
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QObject *info; |
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Buffer output; |
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Buffer input; |
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/* current output mode information */
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VncWritePixels *write_pixels; |
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DisplaySurface clientds; |
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CaptureVoiceOut *audio_cap; |
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struct audsettings as;
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VncReadEvent *read_handler; |
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size_t read_handler_expect; |
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/* input */
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uint8_t modifiers_state[256];
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QEMUPutLEDEntry *led; |
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bool abort;
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#ifndef CONFIG_VNC_THREAD
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VncJob job; |
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#else
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QemuMutex output_mutex; |
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#endif
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/* Encoding specific, if you add something here, don't forget to
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* update vnc_async_encoding_start()
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*/
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VncTight tight; |
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VncZlib zlib; |
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VncHextile hextile; |
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VncZrle zrle; |
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VncZywrle zywrle; |
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Notifier mouse_mode_notifier; |
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QTAILQ_ENTRY(VncState) next; |
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}; |
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/*****************************************************************************
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*
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* Authentication modes
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*
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*****************************************************************************/
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enum {
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VNC_AUTH_INVALID = 0,
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VNC_AUTH_NONE = 1,
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VNC_AUTH_VNC = 2,
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VNC_AUTH_RA2 = 5,
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VNC_AUTH_RA2NE = 6,
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VNC_AUTH_TIGHT = 16,
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VNC_AUTH_ULTRA = 17,
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VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */ |
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VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */ |
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VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */ |
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}; |
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enum {
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VNC_AUTH_VENCRYPT_PLAIN = 256,
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VNC_AUTH_VENCRYPT_TLSNONE = 257,
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VNC_AUTH_VENCRYPT_TLSVNC = 258,
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VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
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VNC_AUTH_VENCRYPT_X509NONE = 260,
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VNC_AUTH_VENCRYPT_X509VNC = 261,
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VNC_AUTH_VENCRYPT_X509PLAIN = 262,
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VNC_AUTH_VENCRYPT_X509SASL = 263,
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VNC_AUTH_VENCRYPT_TLSSASL = 264,
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}; |
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/*****************************************************************************
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*
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* Encoding types
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*
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*****************************************************************************/
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#define VNC_ENCODING_RAW 0x00000000 |
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#define VNC_ENCODING_COPYRECT 0x00000001 |
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#define VNC_ENCODING_RRE 0x00000002 |
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#define VNC_ENCODING_CORRE 0x00000004 |
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#define VNC_ENCODING_HEXTILE 0x00000005 |
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#define VNC_ENCODING_ZLIB 0x00000006 |
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#define VNC_ENCODING_TIGHT 0x00000007 |
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#define VNC_ENCODING_ZLIBHEX 0x00000008 |
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#define VNC_ENCODING_TRLE 0x0000000f |
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#define VNC_ENCODING_ZRLE 0x00000010 |
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#define VNC_ENCODING_ZYWRLE 0x00000011 |
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#define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */ |
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#define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */ |
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#define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */ |
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#define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */ |
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#define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */ |
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#define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */ |
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#define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */ |
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#define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */ |
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#define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */ |
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#define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */ |
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#define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */ |
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#define VNC_ENCODING_WMVi 0x574D5669 |
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/*****************************************************************************
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*
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* Other tight constants
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*
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*****************************************************************************/
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/*
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* Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC.
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*/
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#define VNC_TIGHT_CCB_RESET_MASK (0x0f) |
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#define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4) |
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#define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4) |
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#define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4) |
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#define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4) |
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#define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4) |
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#define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4) |
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#define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4) |
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/*****************************************************************************
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*
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* Features
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*
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*****************************************************************************/
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#define VNC_FEATURE_RESIZE 0 |
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#define VNC_FEATURE_HEXTILE 1 |
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#define VNC_FEATURE_POINTER_TYPE_CHANGE 2 |
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#define VNC_FEATURE_WMVI 3 |
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#define VNC_FEATURE_TIGHT 4 |
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#define VNC_FEATURE_ZLIB 5 |
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#define VNC_FEATURE_COPYRECT 6 |
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#define VNC_FEATURE_RICH_CURSOR 7 |
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#define VNC_FEATURE_TIGHT_PNG 8 |
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#define VNC_FEATURE_ZRLE 9 |
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#define VNC_FEATURE_ZYWRLE 10 |
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#define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE) |
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#define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE) |
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#define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE) |
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#define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI) |
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#define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT) |
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#define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB) |
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#define VNC_FEATURE_COPYRECT_MASK (1 << VNC_FEATURE_COPYRECT) |
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#define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR) |
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#define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG) |
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#define VNC_FEATURE_ZRLE_MASK (1 << VNC_FEATURE_ZRLE) |
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#define VNC_FEATURE_ZYWRLE_MASK (1 << VNC_FEATURE_ZYWRLE) |
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/* Client -> Server message IDs */
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#define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0 |
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#define VNC_MSG_CLIENT_SET_ENCODINGS 2 |
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#define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3 |
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#define VNC_MSG_CLIENT_KEY_EVENT 4 |
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#define VNC_MSG_CLIENT_POINTER_EVENT 5 |
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#define VNC_MSG_CLIENT_CUT_TEXT 6 |
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#define VNC_MSG_CLIENT_VMWARE_0 127 |
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#define VNC_MSG_CLIENT_CALL_CONTROL 249 |
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#define VNC_MSG_CLIENT_XVP 250 |
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#define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251 |
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#define VNC_MSG_CLIENT_TIGHT 252 |
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#define VNC_MSG_CLIENT_GII 253 |
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#define VNC_MSG_CLIENT_VMWARE_1 254 |
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#define VNC_MSG_CLIENT_QEMU 255 |
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|
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/* Server -> Client message IDs */
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#define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0 |
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#define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1 |
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#define VNC_MSG_SERVER_BELL 2 |
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#define VNC_MSG_SERVER_CUT_TEXT 3 |
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#define VNC_MSG_SERVER_VMWARE_0 127 |
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#define VNC_MSG_SERVER_CALL_CONTROL 249 |
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#define VNC_MSG_SERVER_XVP 250 |
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#define VNC_MSG_SERVER_TIGHT 252 |
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#define VNC_MSG_SERVER_GII 253 |
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#define VNC_MSG_SERVER_VMWARE_1 254 |
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#define VNC_MSG_SERVER_QEMU 255 |
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|
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/* QEMU client -> server message IDs */
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#define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0 |
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#define VNC_MSG_CLIENT_QEMU_AUDIO 1 |
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/* QEMU server -> client message IDs */
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#define VNC_MSG_SERVER_QEMU_AUDIO 1 |
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/* QEMU client -> server audio message IDs */
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#define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0 |
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#define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1 |
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#define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2 |
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|
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/* QEMU server -> client audio message IDs */
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#define VNC_MSG_SERVER_QEMU_AUDIO_END 0 |
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#define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1 |
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#define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2 |
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/*****************************************************************************
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*
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* Internal APIs
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*
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*****************************************************************************/
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|
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/* Event loop functions */
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void vnc_client_read(void *opaque); |
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void vnc_client_write(void *opaque); |
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long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
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long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen); |
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|
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/* Protocol I/O functions */
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void vnc_write(VncState *vs, const void *data, size_t len); |
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void vnc_write_u32(VncState *vs, uint32_t value);
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void vnc_write_s32(VncState *vs, int32_t value);
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void vnc_write_u16(VncState *vs, uint16_t value);
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void vnc_write_u8(VncState *vs, uint8_t value);
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void vnc_flush(VncState *vs);
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void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting);
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/* Buffer I/O functions */
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uint8_t read_u8(uint8_t *data, size_t offset); |
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uint16_t read_u16(uint8_t *data, size_t offset); |
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int32_t read_s32(uint8_t *data, size_t offset); |
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uint32_t read_u32(uint8_t *data, size_t offset); |
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/* Protocol stage functions */
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void vnc_client_error(VncState *vs);
|
502 |
int vnc_client_io_error(VncState *vs, int ret, int last_errno); |
503 |
|
504 |
void start_client_init(VncState *vs);
|
505 |
void start_auth_vnc(VncState *vs);
|
506 |
|
507 |
/* Buffer management */
|
508 |
void buffer_reserve(Buffer *buffer, size_t len);
|
509 |
int buffer_empty(Buffer *buffer);
|
510 |
uint8_t *buffer_end(Buffer *buffer); |
511 |
void buffer_reset(Buffer *buffer);
|
512 |
void buffer_free(Buffer *buffer);
|
513 |
void buffer_append(Buffer *buffer, const void *data, size_t len); |
514 |
|
515 |
|
516 |
/* Misc helpers */
|
517 |
|
518 |
char *vnc_socket_local_addr(const char *format, int fd); |
519 |
char *vnc_socket_remote_addr(const char *format, int fd); |
520 |
|
521 |
static inline uint32_t vnc_has_feature(VncState *vs, int feature) { |
522 |
return (vs->features & (1 << feature)); |
523 |
} |
524 |
|
525 |
/* Framebuffer */
|
526 |
void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
527 |
int32_t encoding); |
528 |
|
529 |
void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v);
|
530 |
double vnc_update_freq(VncState *vs, int x, int y, int w, int h); |
531 |
void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h); |
532 |
|
533 |
/* Encodings */
|
534 |
int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); |
535 |
|
536 |
int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); |
537 |
|
538 |
int vnc_hextile_send_framebuffer_update(VncState *vs, int x, |
539 |
int y, int w, int h); |
540 |
void vnc_hextile_set_pixel_conversion(VncState *vs, int generic); |
541 |
|
542 |
void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size); |
543 |
void vnc_zlib_zfree(void *x, void *addr); |
544 |
int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); |
545 |
void vnc_zlib_clear(VncState *vs);
|
546 |
|
547 |
int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); |
548 |
int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y, |
549 |
int w, int h); |
550 |
void vnc_tight_clear(VncState *vs);
|
551 |
|
552 |
int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); |
553 |
int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h); |
554 |
void vnc_zrle_clear(VncState *vs);
|
555 |
|
556 |
#endif /* __QEMU_VNC_H */ |