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 */
71 int has_pointer_type_change;
78 kbd_layout_t *kbd_layout;
79 /* current output mode information */
80 VncWritePixels *write_pixels;
81 VncSendHextileTile *send_hextile_tile;
82 int pix_bpp, pix_big_endian;
83 int red_shift, red_max, red_shift1;
84 int green_shift, green_max, green_shift1;
85 int blue_shift, blue_max, blue_shift1;
87 VncReadEvent *read_handler;
88 size_t read_handler_expect;
90 uint8_t modifiers_state[256];
94 1) Get the queue working for IO.
95 2) there is some weirdness when using the -S option (the screen is grey
96 and not totally invalidated
100 static void vnc_write(VncState *vs, const void *data, size_t len);
101 static void vnc_write_u32(VncState *vs, uint32_t value);
102 static void vnc_write_s32(VncState *vs, int32_t value);
103 static void vnc_write_u16(VncState *vs, uint16_t value);
104 static void vnc_write_u8(VncState *vs, uint8_t value);
105 static void vnc_flush(VncState *vs);
106 static void vnc_update_client(void *opaque);
107 static void vnc_client_read(void *opaque);
109 static inline void vnc_set_bit(uint32_t *d, int k)
111 d[k >> 5] |= 1 << (k & 0x1f);
114 static inline void vnc_clear_bit(uint32_t *d, int k)
116 d[k >> 5] &= ~(1 << (k & 0x1f));
119 static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
129 d[j++] = (1 << n) - 1;
134 static inline int vnc_get_bit(const uint32_t *d, int k)
136 return (d[k >> 5] >> (k & 0x1f)) & 1;
139 static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
143 for(i = 0; i < nb_words; i++) {
144 if ((d1[i] & d2[i]) != 0)
150 static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
152 VncState *vs = ds->opaque;
158 for (i = 0; i < w; i += 16)
159 vnc_set_bit(vs->dirty_row[y], (x + i) / 16);
162 static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
165 vnc_write_u16(vs, x);
166 vnc_write_u16(vs, y);
167 vnc_write_u16(vs, w);
168 vnc_write_u16(vs, h);
170 vnc_write_s32(vs, encoding);
173 static void vnc_dpy_resize(DisplayState *ds, int w, int h)
176 VncState *vs = ds->opaque;
178 ds->data = realloc(ds->data, w * h * vs->depth);
179 vs->old_data = realloc(vs->old_data, w * h * vs->depth);
181 if (ds->data == NULL || vs->old_data == NULL) {
182 fprintf(stderr, "vnc: memory allocation failed\n");
186 ds->depth = vs->depth * 8;
187 size_changed = ds->width != w || ds->height != h;
190 ds->linesize = w * vs->depth;
191 if (vs->csock != -1 && vs->has_resize && size_changed) {
192 vnc_write_u8(vs, 0); /* msg id */
194 vnc_write_u16(vs, 1); /* number of rects */
195 vnc_framebuffer_update(vs, 0, 0, ds->width, ds->height, -223);
197 vs->width = ds->width;
198 vs->height = ds->height;
203 static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
205 vnc_write(vs, pixels, size);
208 /* slowest but generic code. */
209 static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
211 unsigned int r, g, b;
213 r = (v >> vs->red_shift1) & vs->red_max;
214 g = (v >> vs->green_shift1) & vs->green_max;
215 b = (v >> vs->blue_shift1) & vs->blue_max;
216 v = (r << vs->red_shift) |
217 (g << vs->green_shift) |
218 (b << vs->blue_shift);
219 switch(vs->pix_bpp) {
224 if (vs->pix_big_endian) {
234 if (vs->pix_big_endian) {
249 static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
251 uint32_t *pixels = pixels1;
256 for(i = 0; i < n; i++) {
257 vnc_convert_pixel(vs, buf, pixels[i]);
258 vnc_write(vs, buf, vs->pix_bpp);
262 static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
267 vnc_framebuffer_update(vs, x, y, w, h, 0);
269 row = vs->ds->data + y * vs->ds->linesize + x * vs->depth;
270 for (i = 0; i < h; i++) {
271 vs->write_pixels(vs, row, w * vs->depth);
272 row += vs->ds->linesize;
276 static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
278 ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
279 ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
283 #include "vnchextile.h"
287 #include "vnchextile.h"
291 #include "vnchextile.h"
296 #include "vnchextile.h"
300 static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
304 uint32_t last_fg32, last_bg32;
306 vnc_framebuffer_update(vs, x, y, w, h, 5);
309 for (j = y; j < (y + h); j += 16) {
310 for (i = x; i < (x + w); i += 16) {
311 vs->send_hextile_tile(vs, i, j,
312 MIN(16, x + w - i), MIN(16, y + h - j),
313 &last_bg32, &last_fg32, &has_bg, &has_fg);
318 static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
321 send_framebuffer_update_hextile(vs, x, y, w, h);
323 send_framebuffer_update_raw(vs, x, y, w, h);
326 static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
333 int pitch = ds->linesize;
334 VncState *vs = ds->opaque;
336 vnc_update_client(vs);
343 src = (ds->linesize * (src_y + y) + vs->depth * src_x);
344 dst = (ds->linesize * (dst_y + y) + vs->depth * dst_x);
346 src_row = ds->data + src;
347 dst_row = ds->data + dst;
348 old_row = vs->old_data + dst;
350 for (y = 0; y < h; y++) {
351 memmove(old_row, src_row, w * vs->depth);
352 memmove(dst_row, src_row, w * vs->depth);
358 vnc_write_u8(vs, 0); /* msg id */
360 vnc_write_u16(vs, 1); /* number of rects */
361 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, 1);
362 vnc_write_u16(vs, src_x);
363 vnc_write_u16(vs, src_y);
367 static int find_dirty_height(VncState *vs, int y, int last_x, int x)
371 for (h = 1; h < (vs->height - y); h++) {
373 if (!vnc_get_bit(vs->dirty_row[y + h], last_x))
375 for (tmp_x = last_x; tmp_x < x; tmp_x++)
376 vnc_clear_bit(vs->dirty_row[y + h], tmp_x);
382 static void vnc_update_client(void *opaque)
384 VncState *vs = opaque;
386 if (vs->need_update && vs->csock != -1) {
390 uint32_t width_mask[VNC_DIRTY_WORDS];
395 vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS);
397 /* Walk through the dirty map and eliminate tiles that
398 really aren't dirty */
400 old_row = vs->old_data;
402 for (y = 0; y < vs->height; y++) {
403 if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) {
410 for (x = 0; x < vs->ds->width; x += 16) {
411 if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) {
412 vnc_clear_bit(vs->dirty_row[y], (x / 16));
415 memcpy(old_ptr, ptr, 16 * vs->depth);
418 ptr += 16 * vs->depth;
419 old_ptr += 16 * vs->depth;
423 row += vs->ds->linesize;
424 old_row += vs->ds->linesize;
428 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
432 /* Count rectangles */
434 vnc_write_u8(vs, 0); /* msg id */
436 saved_offset = vs->output.offset;
437 vnc_write_u16(vs, 0);
439 for (y = 0; y < vs->height; y++) {
442 for (x = 0; x < vs->width / 16; x++) {
443 if (vnc_get_bit(vs->dirty_row[y], x)) {
447 vnc_clear_bit(vs->dirty_row[y], x);
450 int h = find_dirty_height(vs, y, last_x, x);
451 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
458 int h = find_dirty_height(vs, y, last_x, x);
459 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
463 vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
464 vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
468 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
471 static void vnc_timer_init(VncState *vs)
473 if (vs->timer == NULL) {
474 vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
475 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock));
479 static void vnc_dpy_refresh(DisplayState *ds)
481 VncState *vs = ds->opaque;
486 static int vnc_listen_poll(void *opaque)
488 VncState *vs = opaque;
494 static void buffer_reserve(Buffer *buffer, size_t len)
496 if ((buffer->capacity - buffer->offset) < len) {
497 buffer->capacity += (len + 1024);
498 buffer->buffer = realloc(buffer->buffer, buffer->capacity);
499 if (buffer->buffer == NULL) {
500 fprintf(stderr, "vnc: out of memory\n");
506 static int buffer_empty(Buffer *buffer)
508 return buffer->offset == 0;
511 static char *buffer_end(Buffer *buffer)
513 return buffer->buffer + buffer->offset;
516 static void buffer_reset(Buffer *buffer)
521 static void buffer_append(Buffer *buffer, const void *data, size_t len)
523 memcpy(buffer->buffer + buffer->offset, data, len);
524 buffer->offset += len;
527 static int vnc_client_io_error(VncState *vs, int ret, int last_errno)
529 if (ret == 0 || ret == -1) {
530 if (ret == -1 && (last_errno == EINTR || last_errno == EAGAIN))
533 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
534 closesocket(vs->csock);
536 buffer_reset(&vs->input);
537 buffer_reset(&vs->output);
544 static void vnc_client_error(VncState *vs)
546 vnc_client_io_error(vs, -1, EINVAL);
549 static void vnc_client_write(void *opaque)
552 VncState *vs = opaque;
554 ret = send(vs->csock, vs->output.buffer, vs->output.offset, 0);
555 ret = vnc_client_io_error(vs, ret, socket_error());
559 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
560 vs->output.offset -= ret;
562 if (vs->output.offset == 0) {
563 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
567 static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
569 vs->read_handler = func;
570 vs->read_handler_expect = expecting;
573 static void vnc_client_read(void *opaque)
575 VncState *vs = opaque;
578 buffer_reserve(&vs->input, 4096);
580 ret = recv(vs->csock, buffer_end(&vs->input), 4096, 0);
581 ret = vnc_client_io_error(vs, ret, socket_error());
585 vs->input.offset += ret;
587 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
588 size_t len = vs->read_handler_expect;
591 ret = vs->read_handler(vs, vs->input.buffer, len);
596 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
597 vs->input.offset -= len;
599 vs->read_handler_expect = ret;
604 static void vnc_write(VncState *vs, const void *data, size_t len)
606 buffer_reserve(&vs->output, len);
608 if (buffer_empty(&vs->output)) {
609 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
612 buffer_append(&vs->output, data, len);
615 static void vnc_write_s32(VncState *vs, int32_t value)
617 vnc_write_u32(vs, *(uint32_t *)&value);
620 static void vnc_write_u32(VncState *vs, uint32_t value)
624 buf[0] = (value >> 24) & 0xFF;
625 buf[1] = (value >> 16) & 0xFF;
626 buf[2] = (value >> 8) & 0xFF;
627 buf[3] = value & 0xFF;
629 vnc_write(vs, buf, 4);
632 static void vnc_write_u16(VncState *vs, uint16_t value)
636 buf[0] = (value >> 8) & 0xFF;
637 buf[1] = value & 0xFF;
639 vnc_write(vs, buf, 2);
642 static void vnc_write_u8(VncState *vs, uint8_t value)
644 vnc_write(vs, (char *)&value, 1);
647 static void vnc_flush(VncState *vs)
649 if (vs->output.offset)
650 vnc_client_write(vs);
653 static uint8_t read_u8(uint8_t *data, size_t offset)
658 static uint16_t read_u16(uint8_t *data, size_t offset)
660 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
663 static int32_t read_s32(uint8_t *data, size_t offset)
665 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
666 (data[offset + 2] << 8) | data[offset + 3]);
669 static uint32_t read_u32(uint8_t *data, size_t offset)
671 return ((data[offset] << 24) | (data[offset + 1] << 16) |
672 (data[offset + 2] << 8) | data[offset + 3]);
675 static void client_cut_text(VncState *vs, size_t len, char *text)
679 static void check_pointer_type_change(VncState *vs, int absolute)
681 if (vs->has_pointer_type_change && vs->absolute != absolute) {
684 vnc_write_u16(vs, 1);
685 vnc_framebuffer_update(vs, absolute, 0,
686 vs->ds->width, vs->ds->height, -257);
689 vs->absolute = absolute;
692 static void pointer_event(VncState *vs, int button_mask, int x, int y)
697 if (button_mask & 0x01)
698 buttons |= MOUSE_EVENT_LBUTTON;
699 if (button_mask & 0x02)
700 buttons |= MOUSE_EVENT_MBUTTON;
701 if (button_mask & 0x04)
702 buttons |= MOUSE_EVENT_RBUTTON;
703 if (button_mask & 0x08)
705 if (button_mask & 0x10)
709 kbd_mouse_event(x * 0x7FFF / vs->ds->width,
710 y * 0x7FFF / vs->ds->height,
712 } else if (vs->has_pointer_type_change) {
716 kbd_mouse_event(x, y, dz, buttons);
718 if (vs->last_x != -1)
719 kbd_mouse_event(x - vs->last_x,
726 check_pointer_type_change(vs, kbd_mouse_is_absolute());
729 static void reset_keys(VncState *vs)
732 for(i = 0; i < 256; i++) {
733 if (vs->modifiers_state[i]) {
735 kbd_put_keycode(0xe0);
736 kbd_put_keycode(i | 0x80);
737 vs->modifiers_state[i] = 0;
742 static void do_key_event(VncState *vs, int down, uint32_t sym)
746 keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
748 /* QEMU console switch */
750 case 0x2a: /* Left Shift */
751 case 0x36: /* Right Shift */
752 case 0x1d: /* Left CTRL */
753 case 0x9d: /* Right CTRL */
754 case 0x38: /* Left ALT */
755 case 0xb8: /* Right ALT */
757 vs->modifiers_state[keycode] = 1;
759 vs->modifiers_state[keycode] = 0;
761 case 0x02 ... 0x0a: /* '1' to '9' keys */
762 if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
763 /* Reset the modifiers sent to the current console */
765 console_select(keycode - 0x02);
771 if (is_graphic_console()) {
773 kbd_put_keycode(0xe0);
775 kbd_put_keycode(keycode & 0x7f);
777 kbd_put_keycode(keycode | 0x80);
779 /* QEMU console emulation */
782 case 0x2a: /* Left Shift */
783 case 0x36: /* Right Shift */
784 case 0x1d: /* Left CTRL */
785 case 0x9d: /* Right CTRL */
786 case 0x38: /* Left ALT */
787 case 0xb8: /* Right ALT */
790 kbd_put_keysym(QEMU_KEY_UP);
793 kbd_put_keysym(QEMU_KEY_DOWN);
796 kbd_put_keysym(QEMU_KEY_LEFT);
799 kbd_put_keysym(QEMU_KEY_RIGHT);
802 kbd_put_keysym(QEMU_KEY_DELETE);
805 kbd_put_keysym(QEMU_KEY_HOME);
808 kbd_put_keysym(QEMU_KEY_END);
811 kbd_put_keysym(QEMU_KEY_PAGEUP);
814 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
824 static void key_event(VncState *vs, int down, uint32_t sym)
826 if (sym >= 'A' && sym <= 'Z')
827 sym = sym - 'A' + 'a';
828 do_key_event(vs, down, sym);
831 static void framebuffer_update_request(VncState *vs, int incremental,
832 int x_position, int y_position,
838 char *old_row = vs->old_data + y_position * vs->ds->linesize;
840 for (i = 0; i < h; i++) {
841 vnc_set_bits(vs->dirty_row[y_position + i],
842 (vs->ds->width / 16), VNC_DIRTY_WORDS);
843 memset(old_row, 42, vs->ds->width * vs->depth);
844 old_row += vs->ds->linesize;
849 static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
855 vs->has_pointer_type_change = 0;
857 vs->ds->dpy_copy = NULL;
859 for (i = n_encodings - 1; i >= 0; i--) {
860 switch (encodings[i]) {
864 case 1: /* CopyRect */
865 vs->ds->dpy_copy = vnc_copy;
867 case 5: /* Hextile */
870 case -223: /* DesktopResize */
874 vs->has_pointer_type_change = 1;
881 check_pointer_type_change(vs, kbd_mouse_is_absolute());
884 static int compute_nbits(unsigned int val)
895 static void set_pixel_format(VncState *vs,
896 int bits_per_pixel, int depth,
897 int big_endian_flag, int true_color_flag,
898 int red_max, int green_max, int blue_max,
899 int red_shift, int green_shift, int blue_shift)
901 int host_big_endian_flag;
903 #ifdef WORDS_BIGENDIAN
904 host_big_endian_flag = 1;
906 host_big_endian_flag = 0;
908 if (!true_color_flag) {
910 vnc_client_error(vs);
913 if (bits_per_pixel == 32 &&
914 host_big_endian_flag == big_endian_flag &&
915 red_max == 0xff && green_max == 0xff && blue_max == 0xff &&
916 red_shift == 16 && green_shift == 8 && blue_shift == 0) {
918 vs->write_pixels = vnc_write_pixels_copy;
919 vs->send_hextile_tile = send_hextile_tile_32;
921 if (bits_per_pixel == 16 &&
922 host_big_endian_flag == big_endian_flag &&
923 red_max == 31 && green_max == 63 && blue_max == 31 &&
924 red_shift == 11 && green_shift == 5 && blue_shift == 0) {
926 vs->write_pixels = vnc_write_pixels_copy;
927 vs->send_hextile_tile = send_hextile_tile_16;
929 if (bits_per_pixel == 8 &&
930 red_max == 7 && green_max == 7 && blue_max == 3 &&
931 red_shift == 5 && green_shift == 2 && blue_shift == 0) {
933 vs->write_pixels = vnc_write_pixels_copy;
934 vs->send_hextile_tile = send_hextile_tile_8;
937 /* generic and slower case */
938 if (bits_per_pixel != 8 &&
939 bits_per_pixel != 16 &&
940 bits_per_pixel != 32)
943 vs->red_shift = red_shift;
944 vs->red_max = red_max;
945 vs->red_shift1 = 24 - compute_nbits(red_max);
946 vs->green_shift = green_shift;
947 vs->green_max = green_max;
948 vs->green_shift1 = 16 - compute_nbits(green_max);
949 vs->blue_shift = blue_shift;
950 vs->blue_max = blue_max;
951 vs->blue_shift1 = 8 - compute_nbits(blue_max);
952 vs->pix_bpp = bits_per_pixel / 8;
953 vs->pix_big_endian = big_endian_flag;
954 vs->write_pixels = vnc_write_pixels_generic;
955 vs->send_hextile_tile = send_hextile_tile_generic;
958 vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height);
959 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
960 memset(vs->old_data, 42, vs->ds->linesize * vs->ds->height);
966 static int protocol_client_msg(VncState *vs, char *data, size_t len)
976 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
977 read_u8(data, 6), read_u8(data, 7),
978 read_u16(data, 8), read_u16(data, 10),
979 read_u16(data, 12), read_u8(data, 14),
980 read_u8(data, 15), read_u8(data, 16));
987 return 4 + (read_u16(data, 2) * 4);
989 limit = read_u16(data, 2);
990 for (i = 0; i < limit; i++) {
991 int32_t val = read_s32(data, 4 + (i * 4));
992 memcpy(data + 4 + (i * 4), &val, sizeof(val));
995 set_encodings(vs, (int32_t *)(data + 4), limit);
1001 framebuffer_update_request(vs,
1002 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
1003 read_u16(data, 6), read_u16(data, 8));
1009 key_event(vs, read_u8(data, 1), read_u32(data, 4));
1015 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
1022 return 8 + read_u32(data, 4);
1024 client_cut_text(vs, read_u32(data, 4), data + 8);
1027 printf("Msg: %d\n", data[0]);
1028 vnc_client_error(vs);
1032 vnc_read_when(vs, protocol_client_msg, 1);
1036 static int protocol_client_init(VncState *vs, char *data, size_t len)
1038 char pad[3] = { 0, 0, 0 };
1040 vs->width = vs->ds->width;
1041 vs->height = vs->ds->height;
1042 vnc_write_u16(vs, vs->ds->width);
1043 vnc_write_u16(vs, vs->ds->height);
1045 vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
1046 vnc_write_u8(vs, vs->depth * 8); /* depth */
1047 #ifdef WORDS_BIGENDIAN
1048 vnc_write_u8(vs, 1); /* big-endian-flag */
1050 vnc_write_u8(vs, 0); /* big-endian-flag */
1052 vnc_write_u8(vs, 1); /* true-color-flag */
1053 if (vs->depth == 4) {
1054 vnc_write_u16(vs, 0xFF); /* red-max */
1055 vnc_write_u16(vs, 0xFF); /* green-max */
1056 vnc_write_u16(vs, 0xFF); /* blue-max */
1057 vnc_write_u8(vs, 16); /* red-shift */
1058 vnc_write_u8(vs, 8); /* green-shift */
1059 vnc_write_u8(vs, 0); /* blue-shift */
1060 vs->send_hextile_tile = send_hextile_tile_32;
1061 } else if (vs->depth == 2) {
1062 vnc_write_u16(vs, 31); /* red-max */
1063 vnc_write_u16(vs, 63); /* green-max */
1064 vnc_write_u16(vs, 31); /* blue-max */
1065 vnc_write_u8(vs, 11); /* red-shift */
1066 vnc_write_u8(vs, 5); /* green-shift */
1067 vnc_write_u8(vs, 0); /* blue-shift */
1068 vs->send_hextile_tile = send_hextile_tile_16;
1069 } else if (vs->depth == 1) {
1070 /* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */
1071 vnc_write_u16(vs, 7); /* red-max */
1072 vnc_write_u16(vs, 7); /* green-max */
1073 vnc_write_u16(vs, 3); /* blue-max */
1074 vnc_write_u8(vs, 5); /* red-shift */
1075 vnc_write_u8(vs, 2); /* green-shift */
1076 vnc_write_u8(vs, 0); /* blue-shift */
1077 vs->send_hextile_tile = send_hextile_tile_8;
1079 vs->write_pixels = vnc_write_pixels_copy;
1081 vnc_write(vs, pad, 3); /* padding */
1083 vnc_write_u32(vs, 4);
1084 vnc_write(vs, "QEMU", 4);
1087 vnc_read_when(vs, protocol_client_msg, 1);
1092 static int protocol_version(VncState *vs, char *version, size_t len)
1097 memcpy(local, version, 12);
1100 if (sscanf(local, "RFB %03d.%03d\n", &maj, &min) != 2) {
1101 vnc_client_error(vs);
1105 vnc_write_u32(vs, 1); /* None */
1108 vnc_read_when(vs, protocol_client_init, 1);
1113 static void vnc_listen_read(void *opaque)
1115 VncState *vs = opaque;
1116 struct sockaddr_in addr;
1117 socklen_t addrlen = sizeof(addr);
1119 vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
1120 if (vs->csock != -1) {
1121 socket_set_nonblock(vs->csock);
1122 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque);
1123 vnc_write(vs, "RFB 003.003\n", 12);
1125 vnc_read_when(vs, protocol_version, 12);
1126 memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height);
1127 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1129 vs->has_hextile = 0;
1130 vs->ds->dpy_copy = NULL;
1134 extern int parse_host_port(struct sockaddr_in *saddr, const char *str);
1136 void vnc_display_init(DisplayState *ds, const char *arg)
1138 struct sockaddr *addr;
1139 struct sockaddr_in iaddr;
1141 struct sockaddr_un uaddr;
1143 int reuse_addr, ret;
1148 vs = qemu_mallocz(sizeof(VncState));
1162 if (!keyboard_layout)
1163 keyboard_layout = "en-us";
1165 vs->kbd_layout = init_keyboard_layout(keyboard_layout);
1166 if (!vs->kbd_layout)
1169 vs->ds->data = NULL;
1170 vs->ds->dpy_update = vnc_dpy_update;
1171 vs->ds->dpy_resize = vnc_dpy_resize;
1172 vs->ds->dpy_refresh = vnc_dpy_refresh;
1174 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1176 vnc_dpy_resize(vs->ds, 640, 400);
1179 if (strstart(arg, "unix:", &p)) {
1180 addr = (struct sockaddr *)&uaddr;
1181 addrlen = sizeof(uaddr);
1183 vs->lsock = socket(PF_UNIX, SOCK_STREAM, 0);
1184 if (vs->lsock == -1) {
1185 fprintf(stderr, "Could not create socket\n");
1189 uaddr.sun_family = AF_UNIX;
1190 memset(uaddr.sun_path, 0, 108);
1191 snprintf(uaddr.sun_path, 108, "%s", p);
1193 unlink(uaddr.sun_path);
1197 addr = (struct sockaddr *)&iaddr;
1198 addrlen = sizeof(iaddr);
1200 vs->lsock = socket(PF_INET, SOCK_STREAM, 0);
1201 if (vs->lsock == -1) {
1202 fprintf(stderr, "Could not create socket\n");
1206 if (parse_host_port(&iaddr, arg) < 0) {
1207 fprintf(stderr, "Could not parse VNC address\n");
1211 iaddr.sin_port = htons(ntohs(iaddr.sin_port) + 5900);
1214 ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR,
1215 (const char *)&reuse_addr, sizeof(reuse_addr));
1217 fprintf(stderr, "setsockopt() failed\n");
1222 if (bind(vs->lsock, addr, addrlen) == -1) {
1223 fprintf(stderr, "bind() failed\n");
1227 if (listen(vs->lsock, 1) == -1) {
1228 fprintf(stderr, "listen() failed\n");
1232 ret = qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs);