[mirror_qemu.git] / ui / vnc.h

/*
 * 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 "crypto/tlssession.h"
#include "qemu/buffer.h"
#include "io/channel-socket.h"
#include "io/channel-tls.h"
#include <zlib.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 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;

#include "vnc-auth-vencrypt.h"
#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;
    QIOChannelSocket *lsock;
    guint lsock_tag;
    QIOChannelSocket *lwebsock;
    guint lwebsock_tag;
    DisplaySurface *ds;
    DisplayChangeListener dcl;
    kbd_layout_t *kbd_layout;
    int lock_key_sync;
    QEMUPutLEDEntry *led;
    int ledstate;
    int key_delay_ms;
    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 is_unix;
    char *password;
    time_t expires;
    int auth;
    int subauth; /* Used by VeNCrypt */
    int ws_auth; /* Used by websockets */
    int ws_subauth; /* Used by websockets */
    bool lossy;
    bool non_adaptive;
    QCryptoTLSCreds *tlscreds;
    char *tlsaclname;
#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
{
    QIOChannelSocket *sioc; /* The underlying socket */
    QIOChannel *ioc; /* The channel currently used for I/O */
    guint ioc_tag;
    gboolean disconnecting;

    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];
    QCryptoTLSSession *tls; /* Borrowed pointer from channel, don't free */
#ifdef CONFIG_VNC_SASL
    VncStateSASL sasl;
#endif
    bool encode_ws;
    bool websocket;

    VncClientInfo *info;

    Buffer output;
    Buffer input;
    /* 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];

    bool abort;
    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 */
gboolean vnc_client_io(QIOChannel *ioc,
                       GIOCondition condition,
                       void *opaque);

ssize_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
ssize_t 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_start_protocol(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);
ssize_t vnc_client_io_error(VncState *vs, ssize_t ret, Error **errp);

void start_client_init(VncState *vs);
void start_auth_vnc(VncState *vs);


/* Misc helpers */

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 */
Commit	Line	Data
19a490bf AL	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
2a6a4076 MA	27	#ifndef QEMU_VNC_H
2a6a4076 MA	28	#define QEMU_VNC_H
19a490bf AL	29
19a490bf AL	30	#include "qemu-common.h"
1de7afc9 PB	31	#include "qemu/queue.h"
1de7afc9 PB	32	#include "qemu/thread.h"
28ecbaee	33	#include "ui/console.h"
19a490bf	34	#include "audio/audio.h"
1de7afc9	35	#include "qemu/bitmap.h"
3e305e4a	36	#include "crypto/tlssession.h"
88c5f205	37	#include "qemu/buffer.h"
04d2529d	38	#include "io/channel-socket.h"
2cc45228	39	#include "io/channel-tls.h"
19a490bf AL	40	#include <zlib.h>
19a490bf AL	41
19a490bf	42	#include "keymaps.h"
148954fa CC	43	#include "vnc-palette.h"
148954fa CC	44	#include "vnc-enc-zrle.h"
fb6ba0d5	45	#include "qapi-types.h"
19a490bf	46
5fb6c7a8 AL	47	// #define _VNC_DEBUG 1
	48
	49	#ifdef _VNC_DEBUG
	50	#define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
	51	#else
	52	#define VNC_DEBUG(fmt, ...) do { } while (0)
	53	#endif
	54
19a490bf AL	55	/*****************************************************************************
	56	*
	57	* Core data structures
	58	*
	59	*****************************************************************************/
	60
19a490bf	61	typedef struct VncState VncState;
bd023f95 CC	62	typedef struct VncJob VncJob;
	63	typedef struct VncRect VncRect;
	64	typedef struct VncRectEntry VncRectEntry;
19a490bf AL	65
	66	typedef int VncReadEvent(VncState vs, uint8_t data, size_t len);
	67
9f64916d	68	typedef void VncWritePixels(VncState vs, void data, int size);
19a490bf AL	69
	70	typedef void VncSendHextileTile(VncState *vs,
	71	int x, int y, int w, int h,
	72	void *last_bg,
	73	void *last_fg,
	74	int has_bg, int has_fg);
	75
b4c85ddc	76	/* VNC_DIRTY_PIXELS_PER_BIT is the number of dirty pixels represented
bea60dd7	77	* by one bit in the dirty bitmap, should be a power of 2 */
b4c85ddc PL	78	#define VNC_DIRTY_PIXELS_PER_BIT 16
b4c85ddc PL	79
bea60dd7 PL	80	/* VNC_MAX_WIDTH must be a multiple of VNC_DIRTY_PIXELS_PER_BIT. */
	81
	82	#define VNC_MAX_WIDTH ROUND_UP(2560, VNC_DIRTY_PIXELS_PER_BIT)
	83	#define VNC_MAX_HEIGHT 2048
	84
23bfe28f	85	/* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */
b4c85ddc	86	#define VNC_DIRTY_BITS (VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT)
19a490bf	87
12b316d4 PL	88	/* VNC_DIRTY_BPL (BPL = bits per line) might be greater than
	89	* VNC_DIRTY_BITS due to alignment */
	90	#define VNC_DIRTY_BPL(x) (sizeof((x)->dirty) / VNC_MAX_HEIGHT * BITS_PER_BYTE)
	91
999342a0 CC	92	#define VNC_STAT_RECT 64
	93	#define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT)
	94	#define VNC_STAT_ROWS (VNC_MAX_HEIGHT / VNC_STAT_RECT)
	95
19a490bf AL	96	#define VNC_AUTH_CHALLENGE_SIZE 16
	97
	98	typedef struct VncDisplay VncDisplay;
	99
5fb6c7a8	100	#include "vnc-auth-vencrypt.h"
2f9606b3 AL	101	#ifdef CONFIG_VNC_SASL
	102	#include "vnc-auth-sasl.h"
	103	#endif
7536ee4b	104	#include "vnc-ws.h"
2f9606b3	105
999342a0 CC	106	struct VncRectStat
	107	{
	108	/* time of last 10 updates, to find update frequency */
	109	struct timeval times[10];
	110	int idx;
	111
	112	double freq; /* Update frequency (in Hz) */
	113	bool updated; /* Already updated during this refresh */
	114	};
	115
	116	typedef struct VncRectStat VncRectStat;
	117
1fc62412 SS	118	struct VncSurface
1fc62412 SS	119	{
999342a0	120	struct timeval last_freq_check;
bea60dd7 PL	121	DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT],
bea60dd7 PL	122	VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT);
999342a0	123	VncRectStat stats[VNC_STAT_ROWS][VNC_STAT_COLS];
9f64916d GH	124	pixman_image_t *fb;
9f64916d GH	125	pixman_format_code_t format;
1fc62412	126	};
5fb6c7a8	127
8cf36489 GH	128	typedef enum VncShareMode {
	129	VNC_SHARE_MODE_CONNECTING = 1,
	130	VNC_SHARE_MODE_SHARED,
	131	VNC_SHARE_MODE_EXCLUSIVE,
	132	VNC_SHARE_MODE_DISCONNECTED,
	133	} VncShareMode;
	134
	135	typedef enum VncSharePolicy {
	136	VNC_SHARE_POLICY_IGNORE = 1,
	137	VNC_SHARE_POLICY_ALLOW_EXCLUSIVE,
	138	VNC_SHARE_POLICY_FORCE_SHARED,
	139	} VncSharePolicy;
	140
19a490bf AL	141	struct VncDisplay
19a490bf AL	142	{
41b4bef6	143	QTAILQ_HEAD(, VncState) clients;
e5f34cdd GH	144	int num_connecting;
e5f34cdd GH	145	int num_shared;
8cf36489	146	int num_exclusive;
e5f34cdd	147	int connections_limit;
8cf36489	148	VncSharePolicy share_policy;
04d2529d DB	149	QIOChannelSocket *lsock;
	150	guint lsock_tag;
	151	QIOChannelSocket *lwebsock;
	152	guint lwebsock_tag;
d39fa6d8	153	DisplaySurface *ds;
21ef45d7	154	DisplayChangeListener dcl;
c227f099	155	kbd_layout_t *kbd_layout;
3a0558b5	156	int lock_key_sync;
a54f0d2b PO	157	QEMUPutLEDEntry *led;
a54f0d2b PO	158	int ledstate;
c5ce8333	159	int key_delay_ms;
bd023f95	160	QemuMutex mutex;
19a490bf	161
d467b679 GH	162	QEMUCursor *cursor;
	163	int cursor_msize;
	164	uint8_t *cursor_mask;
	165
1fc62412	166	struct VncSurface guest; /* guest visible surface (aka ds->surface) */
9f64916d	167	pixman_image_t server; / vnc server surface */
1fc62412	168
d616ccc5 GH	169	const char *id;
d616ccc5 GH	170	QTAILQ_ENTRY(VncDisplay) next;
bf7aa45e	171	bool is_unix;
19a490bf	172	char *password;
3c9405a0	173	time_t expires;
19a490bf	174	int auth;
d169f04b	175	int subauth; /* Used by VeNCrypt */
f9148c8a	176	int ws_auth; /* Used by websockets */
eda24e18	177	int ws_subauth; /* Used by websockets */
6f9c78c1	178	bool lossy;
80e0c8c3	179	bool non_adaptive;
3e305e4a DB	180	QCryptoTLSCreds *tlscreds;
3e305e4a DB	181	char *tlsaclname;
76655d6d AL	182	#ifdef CONFIG_VNC_SASL
	183	VncDisplaySASL sasl;
	184	#endif
19a490bf AL	185	};
19a490bf AL	186
d1af0e05 CC	187	typedef struct VncTight {
	188	int type;
	189	uint8_t quality;
	190	uint8_t compression;
	191	uint8_t pixel24;
	192	Buffer tight;
	193	Buffer tmp;
	194	Buffer zlib;
	195	Buffer gradient;
	196	#ifdef CONFIG_VNC_JPEG
	197	Buffer jpeg;
	198	#endif
	199	#ifdef CONFIG_VNC_PNG
	200	Buffer png;
	201	#endif
	202	int levels[4];
	203	z_stream stream[4];
	204	} VncTight;
	205
	206	typedef struct VncHextile {
	207	VncSendHextileTile *send_tile;
	208	} VncHextile;
	209
	210	typedef struct VncZlib {
	211	Buffer zlib;
	212	Buffer tmp;
	213	z_stream stream;
	214	int level;
	215	} VncZlib;
	216
148954fa CC	217	typedef struct VncZrle {
	218	int type;
	219	Buffer fb;
	220	Buffer zrle;
	221	Buffer tmp;
	222	Buffer zlib;
	223	z_stream stream;
	224	VncPalette palette;
	225	} VncZrle;
	226
	227	typedef struct VncZywrle {
	228	int buf[VNC_ZRLE_TILE_WIDTH * VNC_ZRLE_TILE_HEIGHT];
	229	} VncZywrle;
	230
bd023f95 CC	231	struct VncRect
	232	{
	233	int x;
	234	int y;
	235	int w;
	236	int h;
	237	};
	238
	239	struct VncRectEntry
	240	{
	241	struct VncRect rect;
	242	QLIST_ENTRY(VncRectEntry) next;
	243	};
	244
	245	struct VncJob
	246	{
	247	VncState *vs;
	248
	249	QLIST_HEAD(, VncRectEntry) rectangles;
	250	QTAILQ_ENTRY(VncJob) next;
	251	};
bd023f95	252
19a490bf AL	253	struct VncState
19a490bf AL	254	{
04d2529d DB	255	QIOChannelSocket sioc; / The underlying socket */
	256	QIOChannel ioc; / The channel currently used for I/O */
	257	guint ioc_tag;
	258	gboolean disconnecting;
6baebed7	259
23bfe28f	260	DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_DIRTY_BITS);
7d964c9d CC	261	uint8_t *lossy_rect; / Not an Array to avoid costly memcpy in
7d964c9d CC	262	* vnc-jobs-async.c */
6baebed7	263
19a490bf AL	264	VncDisplay *vd;
19a490bf AL	265	int need_update;
c522d0e2	266	int force_update;
63658280	267	int has_dirty;
19a490bf AL	268	uint32_t features;
	269	int absolute;
	270	int last_x;
	271	int last_y;
14768eba	272	uint32_t last_bmask;
5862d195 GH	273	int client_width;
5862d195 GH	274	int client_height;
8cf36489	275	VncShareMode share_mode;
19a490bf AL	276
19a490bf AL	277	uint32_t vnc_encoding;
19a490bf AL	278
	279	int major;
	280	int minor;
	281
7e7e2ebc	282	int auth;
d169f04b	283	int subauth; /* Used by VeNCrypt */
19a490bf	284	char challenge[VNC_AUTH_CHALLENGE_SIZE];
2cc45228	285	QCryptoTLSSession tls; / Borrowed pointer from channel, don't free */
2f9606b3 AL	286	#ifdef CONFIG_VNC_SASL
	287	VncStateSASL sasl;
	288	#endif
7536ee4b TH	289	bool encode_ws;
7536ee4b TH	290	bool websocket;
19a490bf	291
fb6ba0d5	292	VncClientInfo *info;
4a80dba3	293
19a490bf AL	294	Buffer output;
	295	Buffer input;
	296	/* current output mode information */
	297	VncWritePixels *write_pixels;
9f64916d GH	298	PixelFormat client_pf;
	299	pixman_format_code_t client_format;
	300	bool client_be;
19a490bf AL	301
	302	CaptureVoiceOut *audio_cap;
	303	struct audsettings as;
	304
	305	VncReadEvent *read_handler;
	306	size_t read_handler_expect;
	307	/* input */
	308	uint8_t modifiers_state[256];
	309
bd023f95	310	bool abort;
bd023f95	311	QemuMutex output_mutex;
175b2a6e CC	312	QEMUBH *bh;
175b2a6e CC	313	Buffer jobs_buffer;
bd023f95 CC	314
	315	/* Encoding specific, if you add something here, don't forget to
	316	* update vnc_async_encoding_start()
	317	*/
d1af0e05 CC	318	VncTight tight;
	319	VncZlib zlib;
	320	VncHextile hextile;
148954fa CC	321	VncZrle zrle;
148954fa CC	322	VncZywrle zywrle;
19a490bf	323
37c34d9d AL	324	Notifier mouse_mode_notifier;
37c34d9d AL	325
41b4bef6	326	QTAILQ_ENTRY(VncState) next;
19a490bf AL	327	};
19a490bf AL	328
e06679fb AL	329
	330	/*****************************************************************************
	331	*
	332	* Authentication modes
	333	*
	334	*****************************************************************************/
	335
	336	enum {
	337	VNC_AUTH_INVALID = 0,
	338	VNC_AUTH_NONE = 1,
	339	VNC_AUTH_VNC = 2,
	340	VNC_AUTH_RA2 = 5,
	341	VNC_AUTH_RA2NE = 6,
	342	VNC_AUTH_TIGHT = 16,
	343	VNC_AUTH_ULTRA = 17,
2f9606b3 AL	344	VNC_AUTH_TLS = 18, /* Supported in GTK-VNC & VINO */
	345	VNC_AUTH_VENCRYPT = 19, /* Supported in GTK-VNC & VeNCrypt */
	346	VNC_AUTH_SASL = 20, /* Supported in GTK-VNC & VINO */
e06679fb AL	347	};
e06679fb AL	348
e06679fb AL	349	enum {
	350	VNC_AUTH_VENCRYPT_PLAIN = 256,
	351	VNC_AUTH_VENCRYPT_TLSNONE = 257,
	352	VNC_AUTH_VENCRYPT_TLSVNC = 258,
	353	VNC_AUTH_VENCRYPT_TLSPLAIN = 259,
	354	VNC_AUTH_VENCRYPT_X509NONE = 260,
	355	VNC_AUTH_VENCRYPT_X509VNC = 261,
	356	VNC_AUTH_VENCRYPT_X509PLAIN = 262,
2f9606b3 AL	357	VNC_AUTH_VENCRYPT_X509SASL = 263,
2f9606b3 AL	358	VNC_AUTH_VENCRYPT_TLSSASL = 264,
e06679fb AL	359	};
e06679fb AL	360
e06679fb AL	361
	362	/*****************************************************************************
	363	*
	364	* Encoding types
	365	*
	366	*****************************************************************************/
	367
	368	#define VNC_ENCODING_RAW 0x00000000
	369	#define VNC_ENCODING_COPYRECT 0x00000001
	370	#define VNC_ENCODING_RRE 0x00000002
	371	#define VNC_ENCODING_CORRE 0x00000004
	372	#define VNC_ENCODING_HEXTILE 0x00000005
	373	#define VNC_ENCODING_ZLIB 0x00000006
	374	#define VNC_ENCODING_TIGHT 0x00000007
	375	#define VNC_ENCODING_ZLIBHEX 0x00000008
	376	#define VNC_ENCODING_TRLE 0x0000000f
	377	#define VNC_ENCODING_ZRLE 0x00000010
	378	#define VNC_ENCODING_ZYWRLE 0x00000011
	379	#define VNC_ENCODING_COMPRESSLEVEL0 0xFFFFFF00 /* -256 */
	380	#define VNC_ENCODING_QUALITYLEVEL0 0xFFFFFFE0 /* -32 */
	381	#define VNC_ENCODING_XCURSOR 0xFFFFFF10 /* -240 */
	382	#define VNC_ENCODING_RICH_CURSOR 0xFFFFFF11 /* -239 */
	383	#define VNC_ENCODING_POINTER_POS 0xFFFFFF18 /* -232 */
	384	#define VNC_ENCODING_LASTRECT 0xFFFFFF20 /* -224 */
	385	#define VNC_ENCODING_DESKTOPRESIZE 0xFFFFFF21 /* -223 */
	386	#define VNC_ENCODING_POINTER_TYPE_CHANGE 0XFFFFFEFF /* -257 */
	387	#define VNC_ENCODING_EXT_KEY_EVENT 0XFFFFFEFE /* -258 */
	388	#define VNC_ENCODING_AUDIO 0XFFFFFEFD /* -259 */
efe556ad	389	#define VNC_ENCODING_TIGHT_PNG 0xFFFFFEFC /* -260 */
ab99e5c1	390	#define VNC_ENCODING_LED_STATE 0XFFFFFEFB /* -261 */
e06679fb AL	391	#define VNC_ENCODING_WMVi 0x574D5669
	392
	393	/*****************************************************************************
	394	*
	395	* Other tight constants
	396	*
	397	*****************************************************************************/
	398
	399	/*
	400	* Vendors known by TightVNC: standard VNC/RealVNC, TridiaVNC, and TightVNC.
	401	*/
	402
	403	#define VNC_TIGHT_CCB_RESET_MASK (0x0f)
	404	#define VNC_TIGHT_CCB_TYPE_MASK (0x0f << 4)
	405	#define VNC_TIGHT_CCB_TYPE_FILL (0x08 << 4)
	406	#define VNC_TIGHT_CCB_TYPE_JPEG (0x09 << 4)
efe556ad	407	#define VNC_TIGHT_CCB_TYPE_PNG (0x0A << 4)
e06679fb AL	408	#define VNC_TIGHT_CCB_BASIC_MAX (0x07 << 4)
	409	#define VNC_TIGHT_CCB_BASIC_ZLIB (0x03 << 4)
	410	#define VNC_TIGHT_CCB_BASIC_FILTER (0x04 << 4)
	411
	412	/*****************************************************************************
	413	*
	414	* Features
	415	*
	416	*****************************************************************************/
	417
	418	#define VNC_FEATURE_RESIZE 0
	419	#define VNC_FEATURE_HEXTILE 1
	420	#define VNC_FEATURE_POINTER_TYPE_CHANGE 2
	421	#define VNC_FEATURE_WMVI 3
	422	#define VNC_FEATURE_TIGHT 4
	423	#define VNC_FEATURE_ZLIB 5
753b4053	424	#define VNC_FEATURE_COPYRECT 6
d467b679	425	#define VNC_FEATURE_RICH_CURSOR 7
efe556ad	426	#define VNC_FEATURE_TIGHT_PNG 8
148954fa CC	427	#define VNC_FEATURE_ZRLE 9
148954fa CC	428	#define VNC_FEATURE_ZYWRLE 10
ab99e5c1	429	#define VNC_FEATURE_LED_STATE 11
e06679fb AL	430
	431	#define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE)
	432	#define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE)
	433	#define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE)
	434	#define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI)
	435	#define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT)
	436	#define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB)
753b4053	437	#define VNC_FEATURE_COPYRECT_MASK (1 << VNC_FEATURE_COPYRECT)
d467b679	438	#define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR)
efe556ad	439	#define VNC_FEATURE_TIGHT_PNG_MASK (1 << VNC_FEATURE_TIGHT_PNG)
148954fa CC	440	#define VNC_FEATURE_ZRLE_MASK (1 << VNC_FEATURE_ZRLE)
148954fa CC	441	#define VNC_FEATURE_ZYWRLE_MASK (1 << VNC_FEATURE_ZYWRLE)
ab99e5c1	442	#define VNC_FEATURE_LED_STATE_MASK (1 << VNC_FEATURE_LED_STATE)
e06679fb	443
5fb6c7a8	444
46a183da DB	445	/* Client -> Server message IDs */
	446	#define VNC_MSG_CLIENT_SET_PIXEL_FORMAT 0
	447	#define VNC_MSG_CLIENT_SET_ENCODINGS 2
	448	#define VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST 3
	449	#define VNC_MSG_CLIENT_KEY_EVENT 4
	450	#define VNC_MSG_CLIENT_POINTER_EVENT 5
	451	#define VNC_MSG_CLIENT_CUT_TEXT 6
	452	#define VNC_MSG_CLIENT_VMWARE_0 127
	453	#define VNC_MSG_CLIENT_CALL_CONTROL 249
	454	#define VNC_MSG_CLIENT_XVP 250
	455	#define VNC_MSG_CLIENT_SET_DESKTOP_SIZE 251
	456	#define VNC_MSG_CLIENT_TIGHT 252
	457	#define VNC_MSG_CLIENT_GII 253
	458	#define VNC_MSG_CLIENT_VMWARE_1 254
	459	#define VNC_MSG_CLIENT_QEMU 255
	460
	461	/* Server -> Client message IDs */
	462	#define VNC_MSG_SERVER_FRAMEBUFFER_UPDATE 0
	463	#define VNC_MSG_SERVER_SET_COLOUR_MAP_ENTRIES 1
	464	#define VNC_MSG_SERVER_BELL 2
	465	#define VNC_MSG_SERVER_CUT_TEXT 3
	466	#define VNC_MSG_SERVER_VMWARE_0 127
	467	#define VNC_MSG_SERVER_CALL_CONTROL 249
	468	#define VNC_MSG_SERVER_XVP 250
	469	#define VNC_MSG_SERVER_TIGHT 252
	470	#define VNC_MSG_SERVER_GII 253
	471	#define VNC_MSG_SERVER_VMWARE_1 254
	472	#define VNC_MSG_SERVER_QEMU 255
	473
	474
	475
	476	/* QEMU client -> server message IDs */
	477	#define VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT 0
	478	#define VNC_MSG_CLIENT_QEMU_AUDIO 1
	479
	480	/* QEMU server -> client message IDs */
	481	#define VNC_MSG_SERVER_QEMU_AUDIO 1
	482
	483
	484
	485	/* QEMU client -> server audio message IDs */
	486	#define VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE 0
	487	#define VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE 1
	488	#define VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT 2
	489
	490	/* QEMU server -> client audio message IDs */
	491	#define VNC_MSG_SERVER_QEMU_AUDIO_END 0
	492	#define VNC_MSG_SERVER_QEMU_AUDIO_BEGIN 1
	493	#define VNC_MSG_SERVER_QEMU_AUDIO_DATA 2
	494
	495
5fb6c7a8 AL	496	/*****************************************************************************
	497	*
	498	* Internal APIs
	499	*
	500	*****************************************************************************/
	501
	502	/* Event loop functions */
04d2529d DB	503	gboolean vnc_client_io(QIOChannel *ioc,
	504	GIOCondition condition,
	505	void *opaque);
5fb6c7a8	506
fdd1ab6a DB	507	ssize_t vnc_client_read_buf(VncState vs, uint8_t data, size_t datalen);
fdd1ab6a DB	508	ssize_t vnc_client_write_buf(VncState vs, const uint8_t data, size_t datalen);
5fb6c7a8 AL	509
	510	/* Protocol I/O functions */
	511	void vnc_write(VncState vs, const void data, size_t len);
	512	void vnc_write_u32(VncState *vs, uint32_t value);
	513	void vnc_write_s32(VncState *vs, int32_t value);
	514	void vnc_write_u16(VncState *vs, uint16_t value);
	515	void vnc_write_u8(VncState *vs, uint8_t value);
	516	void vnc_flush(VncState *vs);
	517	void vnc_read_when(VncState vs, VncReadEvent func, size_t expecting);
7536ee4b	518	void vnc_disconnect_finish(VncState *vs);
dbee9897	519	void vnc_start_protocol(VncState *vs);
5fb6c7a8 AL	520
	521
	522	/* Buffer I/O functions */
5fb6c7a8 AL	523	uint32_t read_u32(uint8_t *data, size_t offset);
	524
	525	/* Protocol stage functions */
	526	void vnc_client_error(VncState *vs);
04d2529d	527	ssize_t vnc_client_io_error(VncState vs, ssize_t ret, Error *errp);
5fb6c7a8 AL	528
	529	void start_client_init(VncState *vs);
	530	void start_auth_vnc(VncState *vs);
	531
2f9606b3 AL	532
	533	/* Misc helpers */
	534
efe556ad CC	535	static inline uint32_t vnc_has_feature(VncState *vs, int feature) {
	536	return (vs->features & (1 << feature));
	537	}
	538
70a4568f CC	539	/* Framebuffer */
	540	void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
	541	int32_t encoding);
	542
9f64916d GH	543	/* server fb is in PIXMAN_x8r8g8b8 */
	544	#define VNC_SERVER_FB_FORMAT PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8)
	545	#define VNC_SERVER_FB_BITS (PIXMAN_FORMAT_BPP(VNC_SERVER_FB_FORMAT))
	546	#define VNC_SERVER_FB_BYTES ((VNC_SERVER_FB_BITS+7)/8)
	547
	548	void vnc_server_fb_ptr(VncDisplay vd, int x, int y);
	549	int vnc_server_fb_stride(VncDisplay *vd);
	550
70a4568f	551	void vnc_convert_pixel(VncState vs, uint8_t buf, uint32_t v);
999342a0	552	double vnc_update_freq(VncState *vs, int x, int y, int w, int h);
7d964c9d	553	void vnc_sent_lossy_rect(VncState *vs, int x, int y, int w, int h);
70a4568f CC	554
70a4568f CC	555	/* Encodings */
bd023f95 CC	556	int vnc_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
bd023f95 CC	557
a885211e	558	int vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
70a4568f	559
a885211e	560	int vnc_hextile_send_framebuffer_update(VncState *vs, int x,
70a4568f CC	561	int y, int w, int h);
	562	void vnc_hextile_set_pixel_conversion(VncState *vs, int generic);
	563
380282b0 CC	564	void vnc_zlib_zalloc(void x, unsigned items, unsigned size);
380282b0 CC	565	void vnc_zlib_zfree(void x, void addr);
a885211e	566	int vnc_zlib_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
161c4f20	567	void vnc_zlib_clear(VncState *vs);
70a4568f	568
380282b0	569	int vnc_tight_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
efe556ad CC	570	int vnc_tight_png_send_framebuffer_update(VncState *vs, int x, int y,
efe556ad CC	571	int w, int h);
380282b0 CC	572	void vnc_tight_clear(VncState *vs);
380282b0 CC	573
148954fa CC	574	int vnc_zrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
	575	int vnc_zywrle_send_framebuffer_update(VncState *vs, int x, int y, int w, int h);
	576	void vnc_zrle_clear(VncState *vs);
	577
2a6a4076	578	#endif /* QEMU_VNC_H */