Initial import of qemu-2.4.1HEADmaster

1 files changed, 598 insertions, 0 deletions

diff --git a/ui/vnc.h b/ui/vnc.h
new file mode 100644
index 00000000..814d720d
--- /dev/null
+++ b/ui/vnc.h
@@ -0,0 +1,598 @@
+/*
+ * QEMU VNC display driver
+ *
+ * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
+ * Copyright (C) 2006 Fabrice Bellard
+ * Copyright (C) 2009 Red Hat, Inc
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef __QEMU_VNC_H
+#define __QEMU_VNC_H
+
+#include "qemu-common.h"
+#include "qemu/queue.h"
+#include "qemu/thread.h"
+#include "ui/console.h"
+#include "audio/audio.h"
+#include "qemu/bitmap.h"
+#include <zlib.h>
+#include <stdbool.h>
+
+#include "keymaps.h"
+#include "vnc-palette.h"
+#include "vnc-enc-zrle.h"
+#include "qapi-types.h"
+
+// #define _VNC_DEBUG 1
+
+#ifdef _VNC_DEBUG
+#define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
+#else
+#define VNC_DEBUG(fmt, ...) do { } while (0)
+#endif
+
+/*****************************************************************************
+ *
+ * Core data structures
+ *
+ *****************************************************************************/
+
+typedef struct Buffer
+{
+    size_t capacity;
+    size_t offset;
+    uint8_t *buffer;
+} Buffer;
+
+typedef struct VncState VncState;
+typedef struct VncJob VncJob;
+typedef struct VncRect VncRect;
+typedef struct VncRectEntry VncRectEntry;
+
+typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len);
+
+typedef void VncWritePixels(VncState *vs, void *data, int size);
+
+typedef void VncSendHextileTile(VncState *vs,
+                                int x, int y, int w, int h,
+                                void *last_bg,
+                                void *last_fg,
+                                int *has_bg, int *has_fg);
+
+/* VNC_DIRTY_PIXELS_PER_BIT is the number of dirty pixels represented
+ * by one bit in the dirty bitmap, should be a power of 2 */
+#define VNC_DIRTY_PIXELS_PER_BIT 16
+
+/* VNC_MAX_WIDTH must be a multiple of VNC_DIRTY_PIXELS_PER_BIT. */
+
+#define VNC_MAX_WIDTH ROUND_UP(2560, VNC_DIRTY_PIXELS_PER_BIT)
+#define VNC_MAX_HEIGHT 2048
+
+/* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */
+#define VNC_DIRTY_BITS (VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT)
+
+/* VNC_DIRTY_BPL (BPL = bits per line) might be greater than
+ * VNC_DIRTY_BITS due to alignment */
+#define VNC_DIRTY_BPL(x) (sizeof((x)->dirty) / VNC_MAX_HEIGHT * BITS_PER_BYTE)
+
+#define VNC_STAT_RECT  64
+#define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT)
+#define VNC_STAT_ROWS (VNC_MAX_HEIGHT / VNC_STAT_RECT)
+
+#define VNC_AUTH_CHALLENGE_SIZE 16
+
+typedef struct VncDisplay VncDisplay;
+
+#ifdef CONFIG_VNC_TLS
+#include "vnc-tls.h"
+#include "vnc-auth-vencrypt.h"
+#endif
+#ifdef CONFIG_VNC_SASL
+#include "vnc-auth-sasl.h"
+#endif
+#include "vnc-ws.h"
+
+struct VncRectStat
+{
+    /* time of last 10 updates, to find update frequency */
+    struct timeval times[10];
+    int idx;
+
+    double freq;        /* Update frequency (in Hz) */
+    bool updated;       /* Already updated during this refresh */
+};
+
+typedef struct VncRectStat VncRectStat;
+
+struct VncSurface
+{
+    struct timeval last_freq_check;
+    DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT],
+                   VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT);
+    VncRectStat stats[VNC_STAT_ROWS][VNC_STAT_COLS];
+    pixman_image_t *fb;
+    pixman_format_code_t format;
+};
+
+typedef enum VncShareMode {
+    VNC_SHARE_MODE_CONNECTING = 1,
+    VNC_SHARE_MODE_SHARED,
+    VNC_SHARE_MODE_EXCLUSIVE,
+    VNC_SHARE_MODE_DISCONNECTED,
+} VncShareMode;
+
+typedef enum VncSharePolicy {
+    VNC_SHARE_POLICY_IGNORE = 1,
+    VNC_SHARE_POLICY_ALLOW_EXCLUSIVE,
+    VNC_SHARE_POLICY_FORCE_SHARED,
+} VncSharePolicy;
+
+struct VncDisplay
+{
+    QTAILQ_HEAD(, VncState) clients;
+    int num_connecting;
+    int num_shared;
+    int num_exclusive;
+    int connections_limit;
+    VncSharePolicy share_policy;
+    int lsock;
+    int lwebsock;
+    bool ws_enabled;
+    DisplaySurface *ds;
+    DisplayChangeListener dcl;
+    kbd_layout_t *kbd_layout;
+    int lock_key_sync;
+    QemuMutex mutex;
+
+    QEMUCursor *cursor;
+    int cursor_msize;
+    uint8_t *cursor_mask;
+
+    struct VncSurface guest;   /* guest visible surface (aka ds->surface) */
+    pixman_image_t *server;    /* vnc server surface */
+
+    const char *id;
+    QTAILQ_ENTRY(VncDisplay) next;
+    bool enabled;
+    bool is_unix;
+    char *password;
+    time_t expires;
+    int auth;
+    int subauth; /* Used by VeNCrypt */
+    int ws_auth; /* Used by websockets */
+    bool ws_tls; /* Used by websockets */
+    bool lossy;
+    bool non_adaptive;
+#ifdef CONFIG_VNC_TLS
+    VncDisplayTLS tls;
+#endif
+#ifdef CONFIG_VNC_SASL
+    VncDisplaySASL sasl;
+#endif
+};
+
+typedef struct VncTight {
+    int type;
+    uint8_t quality;
+    uint8_t compression;
+    uint8_t pixel24;
+    Buffer tight;
+    Buffer tmp;
+    Buffer zlib;
+    Buffer gradient;
+#ifdef CONFIG_VNC_JPEG
+    Buffer jpeg;
+#endif
+#ifdef CONFIG_VNC_PNG
+    Buffer png;
+#endif
+    int levels[4];
+    z_stream stream[4];
+} VncTight;
+
+typedef struct VncHextile {
+    VncSendHextileTile *send_tile;
+} VncHextile;
+
+typedef struct VncZlib {
+    Buffer zlib;
+    Buffer tmp;
+    z_stream stream;
+    int level;
+} VncZlib;
+
+typedef struct VncZrle {
+    int type;
+    Buffer fb;
+    Buffer zrle;
+    Buffer tmp;
+    Buffer zlib;
+    z_stream stream;
+    VncPalette palette;
+} VncZrle;
+
+typedef struct VncZywrle {
+    int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT];
+} VncZywrle;
+
+struct VncRect
+{
+    int x;
+    int y;
+    int w;
+    int h;
+};
+
+struct VncRectEntry
+{
+    struct VncRect rect;
+    QLIST_ENTRY(VncRectEntry) next;
+};
+
+struct VncJob
+{
+    VncState *vs;
+
+    QLIST_HEAD(, VncRectEntry) rectangles;
+    QTAILQ_ENTRY(VncJob) next;
+};
+
+struct VncState
+{
+    int csock;
+
+    DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_DIRTY_BITS);
+    uint8_t **lossy_rect; /* Not an Array to avoid costly memcpy in
+                           * vnc-jobs-async.c */
+
+    VncDisplay *vd;
+    int need_update;
+    int force_update;
+    int has_dirty;
+    uint32_t features;
+    int absolute;
+    int last_x;
+    int last_y;
+    uint32_t last_bmask;
+    int client_width;
+    int client_height;
+    VncShareMode share_mode;
+
+    uint32_t vnc_encoding;
+
+    int major;
+    int minor;
+
+    int auth;
+    int subauth; /* Used by VeNCrypt */
+    char challenge[VNC_AUTH_CHALLENGE_SIZE];
+#ifdef CONFIG_VNC_TLS
+    VncStateTLS tls;
+#endif
+#ifdef CONFIG_VNC_SASL
+    VncStateSASL sasl;
+#endif
+    bool encode_ws;
+    bool websocket;
+
+    VncClientInfo *info;
+
+    Buffer output;
+    Buffer input;
+    Buffer ws_input;
+    Buffer ws_output;
+    size_t ws_payload_remain;
+    WsMask ws_payload_mask;
+    /* current output mode information */
+    VncWritePixels *write_pixels;
+    PixelFormat client_pf;
+    pixman_format_code_t client_format;
+    bool client_be;
+
+    CaptureVoiceOut *audio_cap;
+    struct audsettings as;
+
+    VncReadEvent *read_handler;
+    size_t read_handler_expect;
+    /* input */
+    uint8_t modifiers_state[256];
+    QEMUPutLEDEntry *led;
+
+    bool abort;
+    bool initialized;
+    QemuMutex output_mutex;
+    QEMUBH *bh;
+    Buffer jobs_buffer;
+
+    /* Encoding specific, if you add something here, don't forget to
+     *  update vnc_async_encoding_start()
+     */
+    VncTight tight;
+    VncZlib zlib;
+    VncHextile hextile;
+    VncZrle zrle;
+    VncZywrle zywrle;
+
+    Notifier mouse_mode_notifier;
+
+    QTAILQ_ENTRY(VncState) next;
+};
+
+
+/*****************************************************************************
+ *
+ * Authentication modes
+ *
+ *****************************************************************************/
+
+enum {
+    VNC_AUTH_INVALID = 0,
+    VNC_AUTH_NONE = 1,
+    VNC_AUTH_VNC = 2,
+    VNC_AUTH_RA2 = 5,
+    VNC_AUTH_RA2NE = 6,
+    VNC_AUTH_TIGHT = 16,
+    VNC_AUTH_ULTRA = 17,
+    VNC_AUTH_TLS = 18,      /* Supported in GTK-VNC & VINO */
+    VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */
+    VNC_AUTH_SASL = 20,     /* Supported in GTK-VNC & VINO */
+};
+
+enum {
+    VNC_AUTH_VENCRYPT_PLAIN = 256,
+    VNC_AUTH_VENCRYPT_TLSNONE = 257,
+    VNC_AUTH_VENCRYPT_TLSVNC = 258,
+    VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
+    VNC_AUTH_VENCRYPT_X509NONE = 260,
+    VNC_AUTH_VENCRYPT_X509VNC = 261,
+    VNC_AUTH_VENCRYPT_X509PLAIN = 262,
+    VNC_AUTH_VENCRYPT_X509SASL = 263,
+    VNC_AUTH_VENCRYPT_TLSSASL = 264,
+};
+
+
+/*****************************************************************************
+ *
+ * Encoding types
+ *
+ *****************************************************************************/
+
+#define VNC_ENCODING_RAW                  0x00000000
+#define VNC_ENCODING_COPYRECT             0x00000001
+#define VNC_ENCODING_RRE                  0x00000002
+#define VNC_ENCODING_CORRE                0x00000004
+#define VNC_ENCODING_HEXTILE              0x00000005
+#define VNC_ENCODING_ZLIB                 0x00000006
+#define VNC_ENCODING_TIGHT                0x00000007
+#define VNC_ENCODING_ZLIBHEX              0x00000008
+#define VNC_ENCODING_TRLE                 0x0000000f
+#define VNC_ENCODING_ZRLE                 0x00000010
+#define VNC_ENCODING_ZYWRLE               0x00000011
+#define VNC_ENCODING_COMPRESSLEVEL0       0xFFFFFF00 /* -256 */
+#define VNC_ENCODING_QUALITYLEVEL0        0xFFFFFFE0 /* -32  */
+#define VNC_ENCODING_XCURSOR              0xFFFFFF10 /* -240 */
+#define VNC_ENCODING_RICH_CURSOR          0xFFFFFF11 /* -239 */
+#define VNC_ENCODING_POINTER_POS          0xFFFFFF18 /* -232 */
+#define VNC_ENCODING_LASTRECT             0xFFFFFF20 /* -224 */
+#define VNC_ENCODING_DESKTOPRESIZE        0xFFFFFF21 /* -223 */
+#define VNC_ENCODING_POINTER_TYPE_CHANGE  0XFFFFFEFF /* -257 */
+#define VNC_ENCODING_EXT_KEY_EVENT        0XFFFFFEFE /* -258 */
+#define VNC_ENCODING_AUDIO                0XFFFFFEFD /* -259 */
+#define VNC_ENCODING_TIGHT_PNG            0xFFFFFEFC /* -260 */
+#define VNC_ENCODING_LED_STATE            0XFFFFFEFB /* -261 */
+#define VNC_ENCODING_WMVi                 0x574D5669
+
+/*****************************************************************************
+ *
+ * Other tight constants
+ *
+ *****************************************************************************/
+
+/*
+ * Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC.
+ */
+
+#define VNC_TIGHT_CCB_RESET_MASK   (0x0f)
+#define VNC_TIGHT_CCB_TYPE_MASK    (0x0f << 4)
+#define VNC_TIGHT_CCB_TYPE_FILL    (0x08 << 4)
+#define VNC_TIGHT_CCB_TYPE_JPEG    (0x09 << 4)
+#define VNC_TIGHT_CCB_TYPE_PNG     (0x0A << 4)
+#define VNC_TIGHT_CCB_BASIC_MAX    (0x07 << 4)
+#define VNC_TIGHT_CCB_BASIC_ZLIB   (0x03 << 4)
+#define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4)
+
+/*****************************************************************************
+ *
+ * Features
+ *
+ *****************************************************************************/
+
+#define VNC_FEATURE_RESIZE                   0
+#define VNC_FEATURE_HEXTILE                  1
+#define VNC_FEATURE_POINTER_TYPE_CHANGE      2
+#define VNC_FEATURE_WMVI                     3
+#define VNC_FEATURE_TIGHT                    4
+#define VNC_FEATURE_ZLIB                     5
+#define VNC_FEATURE_COPYRECT                 6
+#define VNC_FEATURE_RICH_CURSOR              7
+#define VNC_FEATURE_TIGHT_PNG                8
+#define VNC_FEATURE_ZRLE                     9
+#define VNC_FEATURE_ZYWRLE                  10
+#define VNC_FEATURE_LED_STATE               11
+
+#define VNC_FEATURE_RESIZE_MASK              (1 << VNC_FEATURE_RESIZE)
+#define VNC_FEATURE_HEXTILE_MASK             (1 << VNC_FEATURE_HEXTILE)
+#define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE)
+#define VNC_FEATURE_WMVI_MASK                (1 << VNC_FEATURE_WMVI)
+#define VNC_FEATURE_TIGHT_MASK               (1 << VNC_FEATURE_TIGHT)
+#define VNC_FEATURE_ZLIB_MASK                (1 << VNC_FEATURE_ZLIB)
+#define VNC_FEATURE_COPYRECT_MASK            (1 << VNC_FEATURE_COPYRECT)
+#define VNC_FEATURE_RICH_CURSOR_MASK         (1 << VNC_FEATURE_RICH_CURSOR)
+#define VNC_FEATURE_TIGHT_PNG_MASK           (1 << VNC_FEATURE_TIGHT_PNG)
+#define VNC_FEATURE_ZRLE_MASK                (1 << VNC_FEATURE_ZRLE)
+#define VNC_FEATURE_ZYWRLE_MASK              (1 << VNC_FEATURE_ZYWRLE)
+#define VNC_FEATURE_LED_STATE_MASK           (1 << VNC_FEATURE_LED_STATE)
+
+
+/* Client -> Server message IDs */
+#define VNC_MSG_CLIENT_SET_PIXEL_FORMAT           0
+#define VNC_MSG_CLIENT_SET_ENCODINGS              2
+#define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3
+#define VNC_MSG_CLIENT_KEY_EVENT                  4
+#define VNC_MSG_CLIENT_POINTER_EVENT              5
+#define VNC_MSG_CLIENT_CUT_TEXT                   6
+#define VNC_MSG_CLIENT_VMWARE_0                   127
+#define VNC_MSG_CLIENT_CALL_CONTROL               249
+#define VNC_MSG_CLIENT_XVP                        250
+#define VNC_MSG_CLIENT_SET_DESKTOP_SIZE           251
+#define VNC_MSG_CLIENT_TIGHT                      252
+#define VNC_MSG_CLIENT_GII                        253
+#define VNC_MSG_CLIENT_VMWARE_1                   254
+#define VNC_MSG_CLIENT_QEMU                       255
+
+/* Server -> Client message IDs */
+#define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE         0
+#define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES     1
+#define VNC_MSG_SERVER_BELL                       2
+#define VNC_MSG_SERVER_CUT_TEXT                   3
+#define VNC_MSG_SERVER_VMWARE_0                   127
+#define VNC_MSG_SERVER_CALL_CONTROL               249
+#define VNC_MSG_SERVER_XVP                        250
+#define VNC_MSG_SERVER_TIGHT                      252
+#define VNC_MSG_SERVER_GII                        253
+#define VNC_MSG_SERVER_VMWARE_1                   254
+#define VNC_MSG_SERVER_QEMU                       255
+
+
+
+/* QEMU client -> server message IDs */
+#define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT         0
+#define VNC_MSG_CLIENT_QEMU_AUDIO                 1
+
+/* QEMU server -> client message IDs */
+#define VNC_MSG_SERVER_QEMU_AUDIO                 1
+
+
+
+/* QEMU client -> server audio message IDs */
+#define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE          0
+#define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE         1
+#define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT      2
+
+/* QEMU server -> client audio message IDs */
+#define VNC_MSG_SERVER_QEMU_AUDIO_END             0
+#define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN           1
+#define VNC_MSG_SERVER_QEMU_AUDIO_DATA            2
+
+
+/*****************************************************************************
+ *
+ * Internal APIs
+ *
+ *****************************************************************************/
+
+/* Event loop functions */
+void vnc_client_read(void *opaque);
+void vnc_client_write(void *opaque);
+
+long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
+long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen);
+
+/* Protocol I/O functions */
+void vnc_write(VncState *vs, const void *data, size_t len);
+void vnc_write_u32(VncState *vs, uint32_t value);
+void vnc_write_s32(VncState *vs, int32_t value);
+void vnc_write_u16(VncState *vs, uint16_t value);
+void vnc_write_u8(VncState *vs, uint8_t value);
+void vnc_flush(VncState *vs);
+void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting);
+void vnc_disconnect_finish(VncState *vs);
+void vnc_init_state(VncState *vs);
+
+
+/* Buffer I/O functions */
+uint32_t read_u32(uint8_t *data, size_t offset);
+
+/* Protocol stage functions */
+void vnc_client_error(VncState *vs);
+int vnc_client_io_error(VncState *vs, int ret, int last_errno);
+
+void start_client_init(VncState *vs);
+void start_auth_vnc(VncState *vs);
+
+/* Buffer management */
+void buffer_reserve(Buffer *buffer, size_t len);
+void buffer_reset(Buffer *buffer);
+void buffer_free(Buffer *buffer);
+void buffer_append(Buffer *buffer, const void *data, size_t len);
+void buffer_advance(Buffer *buf, size_t len);
+uint8_t *buffer_end(Buffer *buffer);
+
+
+/* Misc helpers */
+
+char *vnc_socket_local_addr(const char *format, int fd);
+char *vnc_socket_remote_addr(const char *format, int fd);
+
+static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
+    return (vs->features & (1 << feature));
+}
+
+/* Framebuffer */
+void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
+                            int32_t encoding);
+
+/* server fb is in PIXMAN_x8r8g8b8 */
+#define VNC_SERVER_FB_FORMAT PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8)
+#define VNC_SERVER_FB_BITS   (PIXMAN_FORMAT_BPP(VNC_SERVER_FB_FORMAT))
+#define VNC_SERVER_FB_BYTES  ((VNC_SERVER_FB_BITS+7)/8)
+
+void *vnc_server_fb_ptr(VncDisplay *vd, int x, int y);
+int vnc_server_fb_stride(VncDisplay *vd);
+
+void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v);
+double vnc_update_freq(VncState *vs, int x, int y, int w, int h);
+void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h);
+
+/* Encodings */
+int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
+
+int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
+
+int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
+                                         int y, int w, int h);
+void vnc_hextile_set_pixel_conversion(VncState *vs, int generic);
+
+void *vnc_zlib_zalloc(void *x, unsigned items, unsigned size);
+void vnc_zlib_zfree(void *x, void *addr);
+int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
+void vnc_zlib_clear(VncState *vs);
+
+int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
+int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y,
+                                          int w, int h);
+void vnc_tight_clear(VncState *vs);
+
+int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
+int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
+void vnc_zrle_clear(VncState *vs);
+
+#endif /* __QEMU_VNC_H */