2 * QEMU VNC display driver
4 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
5 * Copyright (C) 2006 Fabrice Bellard
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 #include "qemu_socket.h"
29 #define VNC_REFRESH_INTERVAL (1000 / 30)
31 #include "vnc_keysym.h"
41 typedef struct VncState VncState;
43 typedef int VncReadEvent(VncState *vs, char *data, size_t len);
45 typedef void VncWritePixels(VncState *vs, void *data, int size);
47 typedef void VncSendHextileTile(VncState *vs,
48 int x, int y, int w, int h,
51 int *has_bg, int *has_fg);
53 #define VNC_MAX_WIDTH 2048
54 #define VNC_MAX_HEIGHT 2048
55 #define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32))
66 uint32_t dirty_row[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
68 int depth; /* internal VNC frame buffer byte per pixel */
73 kbd_layout_t *kbd_layout;
74 /* current output mode information */
75 VncWritePixels *write_pixels;
76 VncSendHextileTile *send_hextile_tile;
77 int pix_bpp, pix_big_endian;
78 int red_shift, red_max, red_shift1;
79 int green_shift, green_max, green_shift1;
80 int blue_shift, blue_max, blue_shift1;
82 VncReadEvent *read_handler;
83 size_t read_handler_expect;
87 1) Get the queue working for IO.
88 2) there is some weirdness when using the -S option (the screen is grey
89 and not totally invalidated
93 static void vnc_write(VncState *vs, const void *data, size_t len);
94 static void vnc_write_u32(VncState *vs, uint32_t value);
95 static void vnc_write_s32(VncState *vs, int32_t value);
96 static void vnc_write_u16(VncState *vs, uint16_t value);
97 static void vnc_write_u8(VncState *vs, uint8_t value);
98 static void vnc_flush(VncState *vs);
99 static void vnc_update_client(void *opaque);
100 static void vnc_client_read(void *opaque);
102 static inline void vnc_set_bit(uint32_t *d, int k)
104 d[k >> 5] |= 1 << (k & 0x1f);
107 static inline void vnc_clear_bit(uint32_t *d, int k)
109 d[k >> 5] &= ~(1 << (k & 0x1f));
112 static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
122 d[j++] = (1 << n) - 1;
127 static inline int vnc_get_bit(const uint32_t *d, int k)
129 return (d[k >> 5] >> (k & 0x1f)) & 1;
132 static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
136 for(i = 0; i < nb_words; i++) {
137 if ((d1[i] & d2[i]) != 0)
143 static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
145 VncState *vs = ds->opaque;
151 for (i = 0; i < w; i += 16)
152 vnc_set_bit(vs->dirty_row[y], (x + i) / 16);
155 static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
158 vnc_write_u16(vs, x);
159 vnc_write_u16(vs, y);
160 vnc_write_u16(vs, w);
161 vnc_write_u16(vs, h);
163 vnc_write_s32(vs, encoding);
166 static void vnc_dpy_resize(DisplayState *ds, int w, int h)
168 VncState *vs = ds->opaque;
170 ds->data = realloc(ds->data, w * h * vs->depth);
171 vs->old_data = realloc(vs->old_data, w * h * vs->depth);
173 if (ds->data == NULL || vs->old_data == NULL) {
174 fprintf(stderr, "vnc: memory allocation failed\n");
178 ds->depth = vs->depth * 8;
181 ds->linesize = w * vs->depth;
182 if (vs->csock != -1 && vs->has_resize) {
183 vnc_write_u8(vs, 0); /* msg id */
185 vnc_write_u16(vs, 1); /* number of rects */
186 vnc_framebuffer_update(vs, 0, 0, ds->width, ds->height, -223);
188 vs->width = ds->width;
189 vs->height = ds->height;
194 static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
196 vnc_write(vs, pixels, size);
199 /* slowest but generic code. */
200 static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
202 unsigned int r, g, b;
204 r = (v >> vs->red_shift1) & vs->red_max;
205 g = (v >> vs->green_shift1) & vs->green_max;
206 b = (v >> vs->blue_shift1) & vs->blue_max;
207 v = (r << vs->red_shift) |
208 (g << vs->green_shift) |
209 (b << vs->blue_shift);
210 switch(vs->pix_bpp) {
215 if (vs->pix_big_endian) {
225 if (vs->pix_big_endian) {
240 static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
242 uint32_t *pixels = pixels1;
247 for(i = 0; i < n; i++) {
248 vnc_convert_pixel(vs, buf, pixels[i]);
249 vnc_write(vs, buf, vs->pix_bpp);
253 static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
258 vnc_framebuffer_update(vs, x, y, w, h, 0);
260 row = vs->ds->data + y * vs->ds->linesize + x * vs->depth;
261 for (i = 0; i < h; i++) {
262 vs->write_pixels(vs, row, w * vs->depth);
263 row += vs->ds->linesize;
267 static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
269 ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
270 ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
274 #include "vnchextile.h"
278 #include "vnchextile.h"
282 #include "vnchextile.h"
287 #include "vnchextile.h"
291 static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
295 uint32_t last_fg32, last_bg32;
297 vnc_framebuffer_update(vs, x, y, w, h, 5);
300 for (j = y; j < (y + h); j += 16) {
301 for (i = x; i < (x + w); i += 16) {
302 vs->send_hextile_tile(vs, i, j,
303 MIN(16, x + w - i), MIN(16, y + h - j),
304 &last_bg32, &last_fg32, &has_bg, &has_fg);
309 static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
312 send_framebuffer_update_hextile(vs, x, y, w, h);
314 send_framebuffer_update_raw(vs, x, y, w, h);
317 static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
324 int pitch = ds->linesize;
325 VncState *vs = ds->opaque;
327 vnc_update_client(vs);
334 src = (ds->linesize * (src_y + y) + vs->depth * src_x);
335 dst = (ds->linesize * (dst_y + y) + vs->depth * dst_x);
337 src_row = ds->data + src;
338 dst_row = ds->data + dst;
339 old_row = vs->old_data + dst;
341 for (y = 0; y < h; y++) {
342 memmove(old_row, src_row, w * vs->depth);
343 memmove(dst_row, src_row, w * vs->depth);
349 vnc_write_u8(vs, 0); /* msg id */
351 vnc_write_u16(vs, 1); /* number of rects */
352 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, 1);
353 vnc_write_u16(vs, src_x);
354 vnc_write_u16(vs, src_y);
358 static int find_dirty_height(VncState *vs, int y, int last_x, int x)
362 for (h = 1; h < (vs->height - y); h++) {
364 if (!vnc_get_bit(vs->dirty_row[y + h], last_x))
366 for (tmp_x = last_x; tmp_x < x; tmp_x++)
367 vnc_clear_bit(vs->dirty_row[y + h], tmp_x);
373 static void vnc_update_client(void *opaque)
375 VncState *vs = opaque;
377 if (vs->need_update && vs->csock != -1) {
381 uint32_t width_mask[VNC_DIRTY_WORDS];
386 vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS);
388 /* Walk through the dirty map and eliminate tiles that
389 really aren't dirty */
391 old_row = vs->old_data;
393 for (y = 0; y < vs->height; y++) {
394 if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) {
401 for (x = 0; x < vs->ds->width; x += 16) {
402 if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) {
403 vnc_clear_bit(vs->dirty_row[y], (x / 16));
406 memcpy(old_ptr, ptr, 16 * vs->depth);
409 ptr += 16 * vs->depth;
410 old_ptr += 16 * vs->depth;
414 row += vs->ds->linesize;
415 old_row += vs->ds->linesize;
419 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
423 /* Count rectangles */
425 vnc_write_u8(vs, 0); /* msg id */
427 saved_offset = vs->output.offset;
428 vnc_write_u16(vs, 0);
430 for (y = 0; y < vs->height; y++) {
433 for (x = 0; x < vs->width / 16; x++) {
434 if (vnc_get_bit(vs->dirty_row[y], x)) {
438 vnc_clear_bit(vs->dirty_row[y], x);
441 int h = find_dirty_height(vs, y, last_x, x);
442 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
449 int h = find_dirty_height(vs, y, last_x, x);
450 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
454 vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
455 vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
459 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
462 static void vnc_timer_init(VncState *vs)
464 if (vs->timer == NULL) {
465 vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
466 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock));
470 static void vnc_dpy_refresh(DisplayState *ds)
472 VncState *vs = ds->opaque;
477 static int vnc_listen_poll(void *opaque)
479 VncState *vs = opaque;
485 static void buffer_reserve(Buffer *buffer, size_t len)
487 if ((buffer->capacity - buffer->offset) < len) {
488 buffer->capacity += (len + 1024);
489 buffer->buffer = realloc(buffer->buffer, buffer->capacity);
490 if (buffer->buffer == NULL) {
491 fprintf(stderr, "vnc: out of memory\n");
497 static int buffer_empty(Buffer *buffer)
499 return buffer->offset == 0;
502 static char *buffer_end(Buffer *buffer)
504 return buffer->buffer + buffer->offset;
507 static void buffer_reset(Buffer *buffer)
512 static void buffer_append(Buffer *buffer, const void *data, size_t len)
514 memcpy(buffer->buffer + buffer->offset, data, len);
515 buffer->offset += len;
518 static int vnc_client_io_error(VncState *vs, int ret, int last_errno)
520 if (ret == 0 || ret == -1) {
521 if (ret == -1 && (last_errno == EINTR || last_errno == EAGAIN))
524 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
525 closesocket(vs->csock);
527 buffer_reset(&vs->input);
528 buffer_reset(&vs->output);
535 static void vnc_client_error(VncState *vs)
537 vnc_client_io_error(vs, -1, EINVAL);
540 static void vnc_client_write(void *opaque)
543 VncState *vs = opaque;
545 ret = send(vs->csock, vs->output.buffer, vs->output.offset, 0);
546 ret = vnc_client_io_error(vs, ret, socket_error());
550 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
551 vs->output.offset -= ret;
553 if (vs->output.offset == 0) {
554 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
558 static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
560 vs->read_handler = func;
561 vs->read_handler_expect = expecting;
564 static void vnc_client_read(void *opaque)
566 VncState *vs = opaque;
569 buffer_reserve(&vs->input, 4096);
571 ret = recv(vs->csock, buffer_end(&vs->input), 4096, 0);
572 ret = vnc_client_io_error(vs, ret, socket_error());
576 vs->input.offset += ret;
578 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
579 size_t len = vs->read_handler_expect;
582 ret = vs->read_handler(vs, vs->input.buffer, len);
587 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
588 vs->input.offset -= len;
590 vs->read_handler_expect = ret;
595 static void vnc_write(VncState *vs, const void *data, size_t len)
597 buffer_reserve(&vs->output, len);
599 if (buffer_empty(&vs->output)) {
600 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
603 buffer_append(&vs->output, data, len);
606 static void vnc_write_s32(VncState *vs, int32_t value)
608 vnc_write_u32(vs, *(uint32_t *)&value);
611 static void vnc_write_u32(VncState *vs, uint32_t value)
615 buf[0] = (value >> 24) & 0xFF;
616 buf[1] = (value >> 16) & 0xFF;
617 buf[2] = (value >> 8) & 0xFF;
618 buf[3] = value & 0xFF;
620 vnc_write(vs, buf, 4);
623 static void vnc_write_u16(VncState *vs, uint16_t value)
627 buf[0] = (value >> 8) & 0xFF;
628 buf[1] = value & 0xFF;
630 vnc_write(vs, buf, 2);
633 static void vnc_write_u8(VncState *vs, uint8_t value)
635 vnc_write(vs, (char *)&value, 1);
638 static void vnc_flush(VncState *vs)
640 if (vs->output.offset)
641 vnc_client_write(vs);
644 static uint8_t read_u8(char *data, size_t offset)
649 static uint16_t read_u16(char *data, size_t offset)
651 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
654 static int32_t read_s32(char *data, size_t offset)
656 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
657 (data[offset + 2] << 8) | data[offset + 3]);
660 static uint32_t read_u32(char *data, size_t offset)
662 return ((data[offset] << 24) | (data[offset + 1] << 16) |
663 (data[offset + 2] << 8) | data[offset + 3]);
666 static void client_cut_text(VncState *vs, size_t len, char *text)
670 static void pointer_event(VncState *vs, int button_mask, int x, int y)
675 if (button_mask & 0x01)
676 buttons |= MOUSE_EVENT_LBUTTON;
677 if (button_mask & 0x02)
678 buttons |= MOUSE_EVENT_MBUTTON;
679 if (button_mask & 0x04)
680 buttons |= MOUSE_EVENT_RBUTTON;
681 if (button_mask & 0x08)
683 if (button_mask & 0x10)
686 if (kbd_mouse_is_absolute()) {
687 kbd_mouse_event(x * 0x7FFF / vs->ds->width,
688 y * 0x7FFF / vs->ds->height,
691 static int last_x = -1;
692 static int last_y = -1;
695 kbd_mouse_event(x - last_x, y - last_y, dz, buttons);
702 static void do_key_event(VncState *vs, int down, uint32_t sym)
706 keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
709 kbd_put_keycode(0xe0);
711 kbd_put_keycode(keycode & 0x7f);
713 kbd_put_keycode(keycode | 0x80);
716 static void key_event(VncState *vs, int down, uint32_t sym)
718 if (sym >= 'A' && sym <= 'Z')
719 sym = sym - 'A' + 'a';
720 do_key_event(vs, down, sym);
723 static void framebuffer_update_request(VncState *vs, int incremental,
724 int x_position, int y_position,
730 char *old_row = vs->old_data + y_position * vs->ds->linesize;
732 for (i = 0; i < h; i++) {
733 vnc_set_bits(vs->dirty_row[y_position + i],
734 (vs->ds->width / 16), VNC_DIRTY_WORDS);
735 memset(old_row, 42, vs->ds->width * vs->depth);
736 old_row += vs->ds->linesize;
741 static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
747 vs->ds->dpy_copy = NULL;
749 for (i = n_encodings - 1; i >= 0; i--) {
750 switch (encodings[i]) {
754 case 1: /* CopyRect */
755 vs->ds->dpy_copy = vnc_copy;
757 case 5: /* Hextile */
760 case -223: /* DesktopResize */
769 static int compute_nbits(unsigned int val)
780 static void set_pixel_format(VncState *vs,
781 int bits_per_pixel, int depth,
782 int big_endian_flag, int true_color_flag,
783 int red_max, int green_max, int blue_max,
784 int red_shift, int green_shift, int blue_shift)
786 int host_big_endian_flag;
788 #ifdef WORDS_BIGENDIAN
789 host_big_endian_flag = 1;
791 host_big_endian_flag = 0;
793 if (!true_color_flag) {
795 vnc_client_error(vs);
798 if (bits_per_pixel == 32 &&
799 host_big_endian_flag == big_endian_flag &&
800 red_max == 0xff && green_max == 0xff && blue_max == 0xff &&
801 red_shift == 16 && green_shift == 8 && blue_shift == 0) {
803 vs->write_pixels = vnc_write_pixels_copy;
804 vs->send_hextile_tile = send_hextile_tile_32;
806 if (bits_per_pixel == 16 &&
807 host_big_endian_flag == big_endian_flag &&
808 red_max == 31 && green_max == 63 && blue_max == 31 &&
809 red_shift == 11 && green_shift == 5 && blue_shift == 0) {
811 vs->write_pixels = vnc_write_pixels_copy;
812 vs->send_hextile_tile = send_hextile_tile_16;
814 if (bits_per_pixel == 8 &&
815 red_max == 7 && green_max == 7 && blue_max == 3 &&
816 red_shift == 5 && green_shift == 2 && blue_shift == 0) {
818 vs->write_pixels = vnc_write_pixels_copy;
819 vs->send_hextile_tile = send_hextile_tile_8;
822 /* generic and slower case */
823 if (bits_per_pixel != 8 &&
824 bits_per_pixel != 16 &&
825 bits_per_pixel != 32)
828 vs->red_shift = red_shift;
829 vs->red_max = red_max;
830 vs->red_shift1 = 24 - compute_nbits(red_max);
831 vs->green_shift = green_shift;
832 vs->green_max = green_max;
833 vs->green_shift1 = 16 - compute_nbits(green_max);
834 vs->blue_shift = blue_shift;
835 vs->blue_max = blue_max;
836 vs->blue_shift1 = 8 - compute_nbits(blue_max);
837 vs->pix_bpp = bits_per_pixel / 8;
838 vs->pix_big_endian = big_endian_flag;
839 vs->write_pixels = vnc_write_pixels_generic;
840 vs->send_hextile_tile = send_hextile_tile_generic;
843 vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height);
844 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
845 memset(vs->old_data, 42, vs->ds->linesize * vs->ds->height);
851 static int protocol_client_msg(VncState *vs, char *data, size_t len)
861 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
862 read_u8(data, 6), read_u8(data, 7),
863 read_u16(data, 8), read_u16(data, 10),
864 read_u16(data, 12), read_u8(data, 14),
865 read_u8(data, 15), read_u8(data, 16));
872 return 4 + (read_u16(data, 2) * 4);
874 limit = read_u16(data, 2);
875 for (i = 0; i < limit; i++) {
876 int32_t val = read_s32(data, 4 + (i * 4));
877 memcpy(data + 4 + (i * 4), &val, sizeof(val));
880 set_encodings(vs, (int32_t *)(data + 4), limit);
886 framebuffer_update_request(vs,
887 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
888 read_u16(data, 6), read_u16(data, 8));
894 key_event(vs, read_u8(data, 1), read_u32(data, 4));
900 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
907 return 8 + read_u32(data, 4);
909 client_cut_text(vs, read_u32(data, 4), data + 8);
912 printf("Msg: %d\n", data[0]);
913 vnc_client_error(vs);
917 vnc_read_when(vs, protocol_client_msg, 1);
921 static int protocol_client_init(VncState *vs, char *data, size_t len)
923 char pad[3] = { 0, 0, 0 };
925 vs->width = vs->ds->width;
926 vs->height = vs->ds->height;
927 vnc_write_u16(vs, vs->ds->width);
928 vnc_write_u16(vs, vs->ds->height);
930 vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
931 vnc_write_u8(vs, vs->depth * 8); /* depth */
932 #ifdef WORDS_BIGENDIAN
933 vnc_write_u8(vs, 1); /* big-endian-flag */
935 vnc_write_u8(vs, 0); /* big-endian-flag */
937 vnc_write_u8(vs, 1); /* true-color-flag */
938 if (vs->depth == 4) {
939 vnc_write_u16(vs, 0xFF); /* red-max */
940 vnc_write_u16(vs, 0xFF); /* green-max */
941 vnc_write_u16(vs, 0xFF); /* blue-max */
942 vnc_write_u8(vs, 16); /* red-shift */
943 vnc_write_u8(vs, 8); /* green-shift */
944 vnc_write_u8(vs, 0); /* blue-shift */
945 vs->send_hextile_tile = send_hextile_tile_32;
946 } else if (vs->depth == 2) {
947 vnc_write_u16(vs, 31); /* red-max */
948 vnc_write_u16(vs, 63); /* green-max */
949 vnc_write_u16(vs, 31); /* blue-max */
950 vnc_write_u8(vs, 11); /* red-shift */
951 vnc_write_u8(vs, 5); /* green-shift */
952 vnc_write_u8(vs, 0); /* blue-shift */
953 vs->send_hextile_tile = send_hextile_tile_16;
954 } else if (vs->depth == 1) {
955 /* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */
956 vnc_write_u16(vs, 7); /* red-max */
957 vnc_write_u16(vs, 7); /* green-max */
958 vnc_write_u16(vs, 3); /* blue-max */
959 vnc_write_u8(vs, 5); /* red-shift */
960 vnc_write_u8(vs, 2); /* green-shift */
961 vnc_write_u8(vs, 0); /* blue-shift */
962 vs->send_hextile_tile = send_hextile_tile_8;
964 vs->write_pixels = vnc_write_pixels_copy;
966 vnc_write(vs, pad, 3); /* padding */
968 vnc_write_u32(vs, 4);
969 vnc_write(vs, "QEMU", 4);
972 vnc_read_when(vs, protocol_client_msg, 1);
977 static int protocol_version(VncState *vs, char *version, size_t len)
982 memcpy(local, version, 12);
985 if (sscanf(local, "RFB %03d.%03d\n", &maj, &min) != 2) {
986 vnc_client_error(vs);
990 vnc_write_u32(vs, 1); /* None */
993 vnc_read_when(vs, protocol_client_init, 1);
998 static void vnc_listen_read(void *opaque)
1000 VncState *vs = opaque;
1001 struct sockaddr_in addr;
1002 socklen_t addrlen = sizeof(addr);
1004 vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
1005 if (vs->csock != -1) {
1006 socket_set_nonblock(vs->csock);
1007 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque);
1008 vnc_write(vs, "RFB 003.003\n", 12);
1010 vnc_read_when(vs, protocol_version, 12);
1011 memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height);
1012 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1014 vs->has_hextile = 0;
1015 vs->ds->dpy_copy = NULL;
1019 void vnc_display_init(DisplayState *ds, int display)
1021 struct sockaddr_in addr;
1022 int reuse_addr, ret;
1025 vs = qemu_mallocz(sizeof(VncState));
1037 if (!keyboard_layout)
1038 keyboard_layout = "en-us";
1040 vs->kbd_layout = init_keyboard_layout(keyboard_layout);
1041 if (!vs->kbd_layout)
1044 vs->lsock = socket(PF_INET, SOCK_STREAM, 0);
1045 if (vs->lsock == -1) {
1046 fprintf(stderr, "Could not create socket\n");
1050 addr.sin_family = AF_INET;
1051 addr.sin_port = htons(5900 + display);
1052 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
1055 ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR,
1056 (const char *)&reuse_addr, sizeof(reuse_addr));
1058 fprintf(stderr, "setsockopt() failed\n");
1062 if (bind(vs->lsock, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
1063 fprintf(stderr, "bind() failed\n");
1067 if (listen(vs->lsock, 1) == -1) {
1068 fprintf(stderr, "listen() failed\n");
1072 ret = qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs);
1077 vs->ds->data = NULL;
1078 vs->ds->dpy_update = vnc_dpy_update;
1079 vs->ds->dpy_resize = vnc_dpy_resize;
1080 vs->ds->dpy_refresh = vnc_dpy_refresh;
1082 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1084 vnc_dpy_resize(vs->ds, 640, 400);