Remove dead code.
[qemu/mini2440.git] / vnc.c
blobaba60d4c24523470640d07421ffc2d2cebe22037
1 /*
2 * QEMU VNC display driver
3 *
4 * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
5 * Copyright (C) 2006 Fabrice Bellard
6 *
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
23 * THE SOFTWARE.
26 #include "vl.h"
27 #include "qemu_socket.h"
29 #define VNC_REFRESH_INTERVAL (1000 / 30)
31 #include "vnc_keysym.h"
32 #include "keymaps.c"
34 typedef struct Buffer
36 size_t capacity;
37 size_t offset;
38 char *buffer;
39 } Buffer;
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,
49 uint32_t *last_bg,
50 uint32_t *last_fg,
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))
57 struct VncState
59 QEMUTimer *timer;
60 int lsock;
61 int csock;
62 DisplayState *ds;
63 int need_update;
64 int width;
65 int height;
66 uint32_t dirty_row[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS];
67 char *old_data;
68 int depth; /* internal VNC frame buffer byte per pixel */
69 int has_resize;
70 int has_hextile;
71 int has_pointer_type_change;
72 int absolute;
73 int last_x;
74 int last_y;
76 const char *display;
78 Buffer output;
79 Buffer input;
80 kbd_layout_t *kbd_layout;
81 /* current output mode information */
82 VncWritePixels *write_pixels;
83 VncSendHextileTile *send_hextile_tile;
84 int pix_bpp, pix_big_endian;
85 int red_shift, red_max, red_shift1;
86 int green_shift, green_max, green_shift1;
87 int blue_shift, blue_max, blue_shift1;
89 VncReadEvent *read_handler;
90 size_t read_handler_expect;
91 /* input */
92 uint8_t modifiers_state[256];
95 static VncState *vnc_state; /* needed for info vnc */
97 void do_info_vnc(void)
99 if (vnc_state == NULL)
100 term_printf("VNC server disabled\n");
101 else {
102 term_printf("VNC server active on: ");
103 term_print_filename(vnc_state->display);
104 term_printf("\n");
106 if (vnc_state->csock == -1)
107 term_printf("No client connected\n");
108 else
109 term_printf("Client connected\n");
113 /* TODO
114 1) Get the queue working for IO.
115 2) there is some weirdness when using the -S option (the screen is grey
116 and not totally invalidated
117 3) resolutions > 1024
120 static void vnc_write(VncState *vs, const void *data, size_t len);
121 static void vnc_write_u32(VncState *vs, uint32_t value);
122 static void vnc_write_s32(VncState *vs, int32_t value);
123 static void vnc_write_u16(VncState *vs, uint16_t value);
124 static void vnc_write_u8(VncState *vs, uint8_t value);
125 static void vnc_flush(VncState *vs);
126 static void vnc_update_client(void *opaque);
127 static void vnc_client_read(void *opaque);
129 static inline void vnc_set_bit(uint32_t *d, int k)
131 d[k >> 5] |= 1 << (k & 0x1f);
134 static inline void vnc_clear_bit(uint32_t *d, int k)
136 d[k >> 5] &= ~(1 << (k & 0x1f));
139 static inline void vnc_set_bits(uint32_t *d, int n, int nb_words)
141 int j;
143 j = 0;
144 while (n >= 32) {
145 d[j++] = -1;
146 n -= 32;
148 if (n > 0)
149 d[j++] = (1 << n) - 1;
150 while (j < nb_words)
151 d[j++] = 0;
154 static inline int vnc_get_bit(const uint32_t *d, int k)
156 return (d[k >> 5] >> (k & 0x1f)) & 1;
159 static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2,
160 int nb_words)
162 int i;
163 for(i = 0; i < nb_words; i++) {
164 if ((d1[i] & d2[i]) != 0)
165 return 1;
167 return 0;
170 static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h)
172 VncState *vs = ds->opaque;
173 int i;
175 h += y;
177 for (; y < h; y++)
178 for (i = 0; i < w; i += 16)
179 vnc_set_bit(vs->dirty_row[y], (x + i) / 16);
182 static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
183 int32_t encoding)
185 vnc_write_u16(vs, x);
186 vnc_write_u16(vs, y);
187 vnc_write_u16(vs, w);
188 vnc_write_u16(vs, h);
190 vnc_write_s32(vs, encoding);
193 static void vnc_dpy_resize(DisplayState *ds, int w, int h)
195 int size_changed;
196 VncState *vs = ds->opaque;
198 ds->data = realloc(ds->data, w * h * vs->depth);
199 vs->old_data = realloc(vs->old_data, w * h * vs->depth);
201 if (ds->data == NULL || vs->old_data == NULL) {
202 fprintf(stderr, "vnc: memory allocation failed\n");
203 exit(1);
206 ds->depth = vs->depth * 8;
207 size_changed = ds->width != w || ds->height != h;
208 ds->width = w;
209 ds->height = h;
210 ds->linesize = w * vs->depth;
211 if (vs->csock != -1 && vs->has_resize && size_changed) {
212 vnc_write_u8(vs, 0); /* msg id */
213 vnc_write_u8(vs, 0);
214 vnc_write_u16(vs, 1); /* number of rects */
215 vnc_framebuffer_update(vs, 0, 0, ds->width, ds->height, -223);
216 vnc_flush(vs);
217 vs->width = ds->width;
218 vs->height = ds->height;
222 /* fastest code */
223 static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
225 vnc_write(vs, pixels, size);
228 /* slowest but generic code. */
229 static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
231 unsigned int r, g, b;
233 r = (v >> vs->red_shift1) & vs->red_max;
234 g = (v >> vs->green_shift1) & vs->green_max;
235 b = (v >> vs->blue_shift1) & vs->blue_max;
236 v = (r << vs->red_shift) |
237 (g << vs->green_shift) |
238 (b << vs->blue_shift);
239 switch(vs->pix_bpp) {
240 case 1:
241 buf[0] = v;
242 break;
243 case 2:
244 if (vs->pix_big_endian) {
245 buf[0] = v >> 8;
246 buf[1] = v;
247 } else {
248 buf[1] = v >> 8;
249 buf[0] = v;
251 break;
252 default:
253 case 4:
254 if (vs->pix_big_endian) {
255 buf[0] = v >> 24;
256 buf[1] = v >> 16;
257 buf[2] = v >> 8;
258 buf[3] = v;
259 } else {
260 buf[3] = v >> 24;
261 buf[2] = v >> 16;
262 buf[1] = v >> 8;
263 buf[0] = v;
265 break;
269 static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
271 uint32_t *pixels = pixels1;
272 uint8_t buf[4];
273 int n, i;
275 n = size >> 2;
276 for(i = 0; i < n; i++) {
277 vnc_convert_pixel(vs, buf, pixels[i]);
278 vnc_write(vs, buf, vs->pix_bpp);
282 static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
284 int i;
285 char *row;
287 vnc_framebuffer_update(vs, x, y, w, h, 0);
289 row = vs->ds->data + y * vs->ds->linesize + x * vs->depth;
290 for (i = 0; i < h; i++) {
291 vs->write_pixels(vs, row, w * vs->depth);
292 row += vs->ds->linesize;
296 static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
298 ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
299 ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
302 #define BPP 8
303 #include "vnchextile.h"
304 #undef BPP
306 #define BPP 16
307 #include "vnchextile.h"
308 #undef BPP
310 #define BPP 32
311 #include "vnchextile.h"
312 #undef BPP
314 #define GENERIC
315 #define BPP 32
316 #include "vnchextile.h"
317 #undef BPP
318 #undef GENERIC
320 static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
322 int i, j;
323 int has_fg, has_bg;
324 uint32_t last_fg32, last_bg32;
326 vnc_framebuffer_update(vs, x, y, w, h, 5);
328 has_fg = has_bg = 0;
329 for (j = y; j < (y + h); j += 16) {
330 for (i = x; i < (x + w); i += 16) {
331 vs->send_hextile_tile(vs, i, j,
332 MIN(16, x + w - i), MIN(16, y + h - j),
333 &last_bg32, &last_fg32, &has_bg, &has_fg);
338 static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
340 if (vs->has_hextile)
341 send_framebuffer_update_hextile(vs, x, y, w, h);
342 else
343 send_framebuffer_update_raw(vs, x, y, w, h);
346 static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
348 int src, dst;
349 char *src_row;
350 char *dst_row;
351 char *old_row;
352 int y = 0;
353 int pitch = ds->linesize;
354 VncState *vs = ds->opaque;
356 vnc_update_client(vs);
358 if (dst_y > src_y) {
359 y = h - 1;
360 pitch = -pitch;
363 src = (ds->linesize * (src_y + y) + vs->depth * src_x);
364 dst = (ds->linesize * (dst_y + y) + vs->depth * dst_x);
366 src_row = ds->data + src;
367 dst_row = ds->data + dst;
368 old_row = vs->old_data + dst;
370 for (y = 0; y < h; y++) {
371 memmove(old_row, src_row, w * vs->depth);
372 memmove(dst_row, src_row, w * vs->depth);
373 src_row += pitch;
374 dst_row += pitch;
375 old_row += pitch;
378 vnc_write_u8(vs, 0); /* msg id */
379 vnc_write_u8(vs, 0);
380 vnc_write_u16(vs, 1); /* number of rects */
381 vnc_framebuffer_update(vs, dst_x, dst_y, w, h, 1);
382 vnc_write_u16(vs, src_x);
383 vnc_write_u16(vs, src_y);
384 vnc_flush(vs);
387 static int find_dirty_height(VncState *vs, int y, int last_x, int x)
389 int h;
391 for (h = 1; h < (vs->height - y); h++) {
392 int tmp_x;
393 if (!vnc_get_bit(vs->dirty_row[y + h], last_x))
394 break;
395 for (tmp_x = last_x; tmp_x < x; tmp_x++)
396 vnc_clear_bit(vs->dirty_row[y + h], tmp_x);
399 return h;
402 static void vnc_update_client(void *opaque)
404 VncState *vs = opaque;
406 if (vs->need_update && vs->csock != -1) {
407 int y;
408 char *row;
409 char *old_row;
410 uint32_t width_mask[VNC_DIRTY_WORDS];
411 int n_rectangles;
412 int saved_offset;
413 int has_dirty = 0;
415 vnc_set_bits(width_mask, (vs->width / 16), VNC_DIRTY_WORDS);
417 /* Walk through the dirty map and eliminate tiles that
418 really aren't dirty */
419 row = vs->ds->data;
420 old_row = vs->old_data;
422 for (y = 0; y < vs->height; y++) {
423 if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) {
424 int x;
425 char *ptr, *old_ptr;
427 ptr = row;
428 old_ptr = old_row;
430 for (x = 0; x < vs->ds->width; x += 16) {
431 if (memcmp(old_ptr, ptr, 16 * vs->depth) == 0) {
432 vnc_clear_bit(vs->dirty_row[y], (x / 16));
433 } else {
434 has_dirty = 1;
435 memcpy(old_ptr, ptr, 16 * vs->depth);
438 ptr += 16 * vs->depth;
439 old_ptr += 16 * vs->depth;
443 row += vs->ds->linesize;
444 old_row += vs->ds->linesize;
447 if (!has_dirty) {
448 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
449 return;
452 /* Count rectangles */
453 n_rectangles = 0;
454 vnc_write_u8(vs, 0); /* msg id */
455 vnc_write_u8(vs, 0);
456 saved_offset = vs->output.offset;
457 vnc_write_u16(vs, 0);
459 for (y = 0; y < vs->height; y++) {
460 int x;
461 int last_x = -1;
462 for (x = 0; x < vs->width / 16; x++) {
463 if (vnc_get_bit(vs->dirty_row[y], x)) {
464 if (last_x == -1) {
465 last_x = x;
467 vnc_clear_bit(vs->dirty_row[y], x);
468 } else {
469 if (last_x != -1) {
470 int h = find_dirty_height(vs, y, last_x, x);
471 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
472 n_rectangles++;
474 last_x = -1;
477 if (last_x != -1) {
478 int h = find_dirty_height(vs, y, last_x, x);
479 send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h);
480 n_rectangles++;
483 vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF;
484 vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF;
485 vnc_flush(vs);
488 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL);
491 static void vnc_timer_init(VncState *vs)
493 if (vs->timer == NULL) {
494 vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs);
495 qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock));
499 static void vnc_dpy_refresh(DisplayState *ds)
501 VncState *vs = ds->opaque;
502 vnc_timer_init(vs);
503 vga_hw_update();
506 static int vnc_listen_poll(void *opaque)
508 VncState *vs = opaque;
509 if (vs->csock == -1)
510 return 1;
511 return 0;
514 static void buffer_reserve(Buffer *buffer, size_t len)
516 if ((buffer->capacity - buffer->offset) < len) {
517 buffer->capacity += (len + 1024);
518 buffer->buffer = realloc(buffer->buffer, buffer->capacity);
519 if (buffer->buffer == NULL) {
520 fprintf(stderr, "vnc: out of memory\n");
521 exit(1);
526 static int buffer_empty(Buffer *buffer)
528 return buffer->offset == 0;
531 static char *buffer_end(Buffer *buffer)
533 return buffer->buffer + buffer->offset;
536 static void buffer_reset(Buffer *buffer)
538 buffer->offset = 0;
541 static void buffer_append(Buffer *buffer, const void *data, size_t len)
543 memcpy(buffer->buffer + buffer->offset, data, len);
544 buffer->offset += len;
547 static int vnc_client_io_error(VncState *vs, int ret, int last_errno)
549 if (ret == 0 || ret == -1) {
550 if (ret == -1 && (last_errno == EINTR || last_errno == EAGAIN))
551 return 0;
553 qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL);
554 closesocket(vs->csock);
555 vs->csock = -1;
556 buffer_reset(&vs->input);
557 buffer_reset(&vs->output);
558 vs->need_update = 0;
559 return 0;
561 return ret;
564 static void vnc_client_error(VncState *vs)
566 vnc_client_io_error(vs, -1, EINVAL);
569 static void vnc_client_write(void *opaque)
571 long ret;
572 VncState *vs = opaque;
574 ret = send(vs->csock, vs->output.buffer, vs->output.offset, 0);
575 ret = vnc_client_io_error(vs, ret, socket_error());
576 if (!ret)
577 return;
579 memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret));
580 vs->output.offset -= ret;
582 if (vs->output.offset == 0) {
583 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
587 static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
589 vs->read_handler = func;
590 vs->read_handler_expect = expecting;
593 static void vnc_client_read(void *opaque)
595 VncState *vs = opaque;
596 long ret;
598 buffer_reserve(&vs->input, 4096);
600 ret = recv(vs->csock, buffer_end(&vs->input), 4096, 0);
601 ret = vnc_client_io_error(vs, ret, socket_error());
602 if (!ret)
603 return;
605 vs->input.offset += ret;
607 while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
608 size_t len = vs->read_handler_expect;
609 int ret;
611 ret = vs->read_handler(vs, vs->input.buffer, len);
612 if (vs->csock == -1)
613 return;
615 if (!ret) {
616 memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len));
617 vs->input.offset -= len;
618 } else {
619 vs->read_handler_expect = ret;
624 static void vnc_write(VncState *vs, const void *data, size_t len)
626 buffer_reserve(&vs->output, len);
628 if (buffer_empty(&vs->output)) {
629 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
632 buffer_append(&vs->output, data, len);
635 static void vnc_write_s32(VncState *vs, int32_t value)
637 vnc_write_u32(vs, *(uint32_t *)&value);
640 static void vnc_write_u32(VncState *vs, uint32_t value)
642 uint8_t buf[4];
644 buf[0] = (value >> 24) & 0xFF;
645 buf[1] = (value >> 16) & 0xFF;
646 buf[2] = (value >> 8) & 0xFF;
647 buf[3] = value & 0xFF;
649 vnc_write(vs, buf, 4);
652 static void vnc_write_u16(VncState *vs, uint16_t value)
654 uint8_t buf[2];
656 buf[0] = (value >> 8) & 0xFF;
657 buf[1] = value & 0xFF;
659 vnc_write(vs, buf, 2);
662 static void vnc_write_u8(VncState *vs, uint8_t value)
664 vnc_write(vs, (char *)&value, 1);
667 static void vnc_flush(VncState *vs)
669 if (vs->output.offset)
670 vnc_client_write(vs);
673 static uint8_t read_u8(uint8_t *data, size_t offset)
675 return data[offset];
678 static uint16_t read_u16(uint8_t *data, size_t offset)
680 return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF);
683 static int32_t read_s32(uint8_t *data, size_t offset)
685 return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) |
686 (data[offset + 2] << 8) | data[offset + 3]);
689 static uint32_t read_u32(uint8_t *data, size_t offset)
691 return ((data[offset] << 24) | (data[offset + 1] << 16) |
692 (data[offset + 2] << 8) | data[offset + 3]);
695 static void client_cut_text(VncState *vs, size_t len, char *text)
699 static void check_pointer_type_change(VncState *vs, int absolute)
701 if (vs->has_pointer_type_change && vs->absolute != absolute) {
702 vnc_write_u8(vs, 0);
703 vnc_write_u8(vs, 0);
704 vnc_write_u16(vs, 1);
705 vnc_framebuffer_update(vs, absolute, 0,
706 vs->ds->width, vs->ds->height, -257);
707 vnc_flush(vs);
709 vs->absolute = absolute;
712 static void pointer_event(VncState *vs, int button_mask, int x, int y)
714 int buttons = 0;
715 int dz = 0;
717 if (button_mask & 0x01)
718 buttons |= MOUSE_EVENT_LBUTTON;
719 if (button_mask & 0x02)
720 buttons |= MOUSE_EVENT_MBUTTON;
721 if (button_mask & 0x04)
722 buttons |= MOUSE_EVENT_RBUTTON;
723 if (button_mask & 0x08)
724 dz = -1;
725 if (button_mask & 0x10)
726 dz = 1;
728 if (vs->absolute) {
729 kbd_mouse_event(x * 0x7FFF / vs->ds->width,
730 y * 0x7FFF / vs->ds->height,
731 dz, buttons);
732 } else if (vs->has_pointer_type_change) {
733 x -= 0x7FFF;
734 y -= 0x7FFF;
736 kbd_mouse_event(x, y, dz, buttons);
737 } else {
738 if (vs->last_x != -1)
739 kbd_mouse_event(x - vs->last_x,
740 y - vs->last_y,
741 dz, buttons);
742 vs->last_x = x;
743 vs->last_y = y;
746 check_pointer_type_change(vs, kbd_mouse_is_absolute());
749 static void reset_keys(VncState *vs)
751 int i;
752 for(i = 0; i < 256; i++) {
753 if (vs->modifiers_state[i]) {
754 if (i & 0x80)
755 kbd_put_keycode(0xe0);
756 kbd_put_keycode(i | 0x80);
757 vs->modifiers_state[i] = 0;
762 static void do_key_event(VncState *vs, int down, uint32_t sym)
764 int keycode;
766 keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
768 /* QEMU console switch */
769 switch(keycode) {
770 case 0x2a: /* Left Shift */
771 case 0x36: /* Right Shift */
772 case 0x1d: /* Left CTRL */
773 case 0x9d: /* Right CTRL */
774 case 0x38: /* Left ALT */
775 case 0xb8: /* Right ALT */
776 if (down)
777 vs->modifiers_state[keycode] = 1;
778 else
779 vs->modifiers_state[keycode] = 0;
780 break;
781 case 0x02 ... 0x0a: /* '1' to '9' keys */
782 if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) {
783 /* Reset the modifiers sent to the current console */
784 reset_keys(vs);
785 console_select(keycode - 0x02);
786 return;
788 break;
791 if (is_graphic_console()) {
792 if (keycode & 0x80)
793 kbd_put_keycode(0xe0);
794 if (down)
795 kbd_put_keycode(keycode & 0x7f);
796 else
797 kbd_put_keycode(keycode | 0x80);
798 } else {
799 /* QEMU console emulation */
800 if (down) {
801 switch (keycode) {
802 case 0x2a: /* Left Shift */
803 case 0x36: /* Right Shift */
804 case 0x1d: /* Left CTRL */
805 case 0x9d: /* Right CTRL */
806 case 0x38: /* Left ALT */
807 case 0xb8: /* Right ALT */
808 break;
809 case 0xc8:
810 kbd_put_keysym(QEMU_KEY_UP);
811 break;
812 case 0xd0:
813 kbd_put_keysym(QEMU_KEY_DOWN);
814 break;
815 case 0xcb:
816 kbd_put_keysym(QEMU_KEY_LEFT);
817 break;
818 case 0xcd:
819 kbd_put_keysym(QEMU_KEY_RIGHT);
820 break;
821 case 0xd3:
822 kbd_put_keysym(QEMU_KEY_DELETE);
823 break;
824 case 0xc7:
825 kbd_put_keysym(QEMU_KEY_HOME);
826 break;
827 case 0xcf:
828 kbd_put_keysym(QEMU_KEY_END);
829 break;
830 case 0xc9:
831 kbd_put_keysym(QEMU_KEY_PAGEUP);
832 break;
833 case 0xd1:
834 kbd_put_keysym(QEMU_KEY_PAGEDOWN);
835 break;
836 default:
837 kbd_put_keysym(sym);
838 break;
844 static void key_event(VncState *vs, int down, uint32_t sym)
846 if (sym >= 'A' && sym <= 'Z')
847 sym = sym - 'A' + 'a';
848 do_key_event(vs, down, sym);
851 static void framebuffer_update_request(VncState *vs, int incremental,
852 int x_position, int y_position,
853 int w, int h)
855 int i;
856 vs->need_update = 1;
857 if (!incremental) {
858 char *old_row = vs->old_data + y_position * vs->ds->linesize;
860 for (i = 0; i < h; i++) {
861 vnc_set_bits(vs->dirty_row[y_position + i],
862 (vs->ds->width / 16), VNC_DIRTY_WORDS);
863 memset(old_row, 42, vs->ds->width * vs->depth);
864 old_row += vs->ds->linesize;
869 static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
871 int i;
873 vs->has_hextile = 0;
874 vs->has_resize = 0;
875 vs->has_pointer_type_change = 0;
876 vs->absolute = -1;
877 vs->ds->dpy_copy = NULL;
879 for (i = n_encodings - 1; i >= 0; i--) {
880 switch (encodings[i]) {
881 case 0: /* Raw */
882 vs->has_hextile = 0;
883 break;
884 case 1: /* CopyRect */
885 vs->ds->dpy_copy = vnc_copy;
886 break;
887 case 5: /* Hextile */
888 vs->has_hextile = 1;
889 break;
890 case -223: /* DesktopResize */
891 vs->has_resize = 1;
892 break;
893 case -257:
894 vs->has_pointer_type_change = 1;
895 break;
896 default:
897 break;
901 check_pointer_type_change(vs, kbd_mouse_is_absolute());
904 static int compute_nbits(unsigned int val)
906 int n;
907 n = 0;
908 while (val != 0) {
909 n++;
910 val >>= 1;
912 return n;
915 static void set_pixel_format(VncState *vs,
916 int bits_per_pixel, int depth,
917 int big_endian_flag, int true_color_flag,
918 int red_max, int green_max, int blue_max,
919 int red_shift, int green_shift, int blue_shift)
921 int host_big_endian_flag;
923 #ifdef WORDS_BIGENDIAN
924 host_big_endian_flag = 1;
925 #else
926 host_big_endian_flag = 0;
927 #endif
928 if (!true_color_flag) {
929 fail:
930 vnc_client_error(vs);
931 return;
933 if (bits_per_pixel == 32 &&
934 host_big_endian_flag == big_endian_flag &&
935 red_max == 0xff && green_max == 0xff && blue_max == 0xff &&
936 red_shift == 16 && green_shift == 8 && blue_shift == 0) {
937 vs->depth = 4;
938 vs->write_pixels = vnc_write_pixels_copy;
939 vs->send_hextile_tile = send_hextile_tile_32;
940 } else
941 if (bits_per_pixel == 16 &&
942 host_big_endian_flag == big_endian_flag &&
943 red_max == 31 && green_max == 63 && blue_max == 31 &&
944 red_shift == 11 && green_shift == 5 && blue_shift == 0) {
945 vs->depth = 2;
946 vs->write_pixels = vnc_write_pixels_copy;
947 vs->send_hextile_tile = send_hextile_tile_16;
948 } else
949 if (bits_per_pixel == 8 &&
950 red_max == 7 && green_max == 7 && blue_max == 3 &&
951 red_shift == 5 && green_shift == 2 && blue_shift == 0) {
952 vs->depth = 1;
953 vs->write_pixels = vnc_write_pixels_copy;
954 vs->send_hextile_tile = send_hextile_tile_8;
955 } else
957 /* generic and slower case */
958 if (bits_per_pixel != 8 &&
959 bits_per_pixel != 16 &&
960 bits_per_pixel != 32)
961 goto fail;
962 vs->depth = 4;
963 vs->red_shift = red_shift;
964 vs->red_max = red_max;
965 vs->red_shift1 = 24 - compute_nbits(red_max);
966 vs->green_shift = green_shift;
967 vs->green_max = green_max;
968 vs->green_shift1 = 16 - compute_nbits(green_max);
969 vs->blue_shift = blue_shift;
970 vs->blue_max = blue_max;
971 vs->blue_shift1 = 8 - compute_nbits(blue_max);
972 vs->pix_bpp = bits_per_pixel / 8;
973 vs->pix_big_endian = big_endian_flag;
974 vs->write_pixels = vnc_write_pixels_generic;
975 vs->send_hextile_tile = send_hextile_tile_generic;
978 vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height);
979 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
980 memset(vs->old_data, 42, vs->ds->linesize * vs->ds->height);
982 vga_hw_invalidate();
983 vga_hw_update();
986 static int protocol_client_msg(VncState *vs, char *data, size_t len)
988 int i;
989 uint16_t limit;
991 switch (data[0]) {
992 case 0:
993 if (len == 1)
994 return 20;
996 set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5),
997 read_u8(data, 6), read_u8(data, 7),
998 read_u16(data, 8), read_u16(data, 10),
999 read_u16(data, 12), read_u8(data, 14),
1000 read_u8(data, 15), read_u8(data, 16));
1001 break;
1002 case 2:
1003 if (len == 1)
1004 return 4;
1006 if (len == 4)
1007 return 4 + (read_u16(data, 2) * 4);
1009 limit = read_u16(data, 2);
1010 for (i = 0; i < limit; i++) {
1011 int32_t val = read_s32(data, 4 + (i * 4));
1012 memcpy(data + 4 + (i * 4), &val, sizeof(val));
1015 set_encodings(vs, (int32_t *)(data + 4), limit);
1016 break;
1017 case 3:
1018 if (len == 1)
1019 return 10;
1021 framebuffer_update_request(vs,
1022 read_u8(data, 1), read_u16(data, 2), read_u16(data, 4),
1023 read_u16(data, 6), read_u16(data, 8));
1024 break;
1025 case 4:
1026 if (len == 1)
1027 return 8;
1029 key_event(vs, read_u8(data, 1), read_u32(data, 4));
1030 break;
1031 case 5:
1032 if (len == 1)
1033 return 6;
1035 pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4));
1036 break;
1037 case 6:
1038 if (len == 1)
1039 return 8;
1041 if (len == 8)
1042 return 8 + read_u32(data, 4);
1044 client_cut_text(vs, read_u32(data, 4), data + 8);
1045 break;
1046 default:
1047 printf("Msg: %d\n", data[0]);
1048 vnc_client_error(vs);
1049 break;
1052 vnc_read_when(vs, protocol_client_msg, 1);
1053 return 0;
1056 static int protocol_client_init(VncState *vs, char *data, size_t len)
1058 char pad[3] = { 0, 0, 0 };
1059 char buf[1024];
1060 int size;
1062 vs->width = vs->ds->width;
1063 vs->height = vs->ds->height;
1064 vnc_write_u16(vs, vs->ds->width);
1065 vnc_write_u16(vs, vs->ds->height);
1067 vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
1068 vnc_write_u8(vs, vs->depth * 8); /* depth */
1069 #ifdef WORDS_BIGENDIAN
1070 vnc_write_u8(vs, 1); /* big-endian-flag */
1071 #else
1072 vnc_write_u8(vs, 0); /* big-endian-flag */
1073 #endif
1074 vnc_write_u8(vs, 1); /* true-color-flag */
1075 if (vs->depth == 4) {
1076 vnc_write_u16(vs, 0xFF); /* red-max */
1077 vnc_write_u16(vs, 0xFF); /* green-max */
1078 vnc_write_u16(vs, 0xFF); /* blue-max */
1079 vnc_write_u8(vs, 16); /* red-shift */
1080 vnc_write_u8(vs, 8); /* green-shift */
1081 vnc_write_u8(vs, 0); /* blue-shift */
1082 vs->send_hextile_tile = send_hextile_tile_32;
1083 } else if (vs->depth == 2) {
1084 vnc_write_u16(vs, 31); /* red-max */
1085 vnc_write_u16(vs, 63); /* green-max */
1086 vnc_write_u16(vs, 31); /* blue-max */
1087 vnc_write_u8(vs, 11); /* red-shift */
1088 vnc_write_u8(vs, 5); /* green-shift */
1089 vnc_write_u8(vs, 0); /* blue-shift */
1090 vs->send_hextile_tile = send_hextile_tile_16;
1091 } else if (vs->depth == 1) {
1092 /* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */
1093 vnc_write_u16(vs, 7); /* red-max */
1094 vnc_write_u16(vs, 7); /* green-max */
1095 vnc_write_u16(vs, 3); /* blue-max */
1096 vnc_write_u8(vs, 5); /* red-shift */
1097 vnc_write_u8(vs, 2); /* green-shift */
1098 vnc_write_u8(vs, 0); /* blue-shift */
1099 vs->send_hextile_tile = send_hextile_tile_8;
1101 vs->write_pixels = vnc_write_pixels_copy;
1103 vnc_write(vs, pad, 3); /* padding */
1105 if (qemu_name)
1106 size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name);
1107 else
1108 size = snprintf(buf, sizeof(buf), "QEMU");
1110 vnc_write_u32(vs, size);
1111 vnc_write(vs, buf, size);
1112 vnc_flush(vs);
1114 vnc_read_when(vs, protocol_client_msg, 1);
1116 return 0;
1119 static int protocol_version(VncState *vs, char *version, size_t len)
1121 char local[13];
1122 int maj, min;
1124 memcpy(local, version, 12);
1125 local[12] = 0;
1127 if (sscanf(local, "RFB %03d.%03d\n", &maj, &min) != 2) {
1128 vnc_client_error(vs);
1129 return 0;
1132 vnc_write_u32(vs, 1); /* None */
1133 vnc_flush(vs);
1135 vnc_read_when(vs, protocol_client_init, 1);
1137 return 0;
1140 static void vnc_listen_read(void *opaque)
1142 VncState *vs = opaque;
1143 struct sockaddr_in addr;
1144 socklen_t addrlen = sizeof(addr);
1146 vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
1147 if (vs->csock != -1) {
1148 socket_set_nonblock(vs->csock);
1149 qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, opaque);
1150 vnc_write(vs, "RFB 003.003\n", 12);
1151 vnc_flush(vs);
1152 vnc_read_when(vs, protocol_version, 12);
1153 memset(vs->old_data, 0, vs->ds->linesize * vs->ds->height);
1154 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1155 vs->has_resize = 0;
1156 vs->has_hextile = 0;
1157 vs->ds->dpy_copy = NULL;
1161 extern int parse_host_port(struct sockaddr_in *saddr, const char *str);
1163 void vnc_display_init(DisplayState *ds, const char *arg)
1165 struct sockaddr *addr;
1166 struct sockaddr_in iaddr;
1167 #ifndef _WIN32
1168 struct sockaddr_un uaddr;
1169 #endif
1170 int reuse_addr, ret;
1171 socklen_t addrlen;
1172 const char *p;
1173 VncState *vs;
1175 vs = qemu_mallocz(sizeof(VncState));
1176 if (!vs)
1177 exit(1);
1179 ds->opaque = vs;
1180 vnc_state = vs;
1181 vs->display = arg;
1183 vs->lsock = -1;
1184 vs->csock = -1;
1185 vs->depth = 4;
1186 vs->last_x = -1;
1187 vs->last_y = -1;
1189 vs->ds = ds;
1191 if (!keyboard_layout)
1192 keyboard_layout = "en-us";
1194 vs->kbd_layout = init_keyboard_layout(keyboard_layout);
1195 if (!vs->kbd_layout)
1196 exit(1);
1198 vs->ds->data = NULL;
1199 vs->ds->dpy_update = vnc_dpy_update;
1200 vs->ds->dpy_resize = vnc_dpy_resize;
1201 vs->ds->dpy_refresh = vnc_dpy_refresh;
1203 memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
1205 vnc_dpy_resize(vs->ds, 640, 400);
1207 #ifndef _WIN32
1208 if (strstart(arg, "unix:", &p)) {
1209 addr = (struct sockaddr *)&uaddr;
1210 addrlen = sizeof(uaddr);
1212 vs->lsock = socket(PF_UNIX, SOCK_STREAM, 0);
1213 if (vs->lsock == -1) {
1214 fprintf(stderr, "Could not create socket\n");
1215 exit(1);
1218 uaddr.sun_family = AF_UNIX;
1219 memset(uaddr.sun_path, 0, 108);
1220 snprintf(uaddr.sun_path, 108, "%s", p);
1222 unlink(uaddr.sun_path);
1223 } else
1224 #endif
1226 addr = (struct sockaddr *)&iaddr;
1227 addrlen = sizeof(iaddr);
1229 vs->lsock = socket(PF_INET, SOCK_STREAM, 0);
1230 if (vs->lsock == -1) {
1231 fprintf(stderr, "Could not create socket\n");
1232 exit(1);
1235 if (parse_host_port(&iaddr, arg) < 0) {
1236 fprintf(stderr, "Could not parse VNC address\n");
1237 exit(1);
1240 iaddr.sin_port = htons(ntohs(iaddr.sin_port) + 5900);
1242 reuse_addr = 1;
1243 ret = setsockopt(vs->lsock, SOL_SOCKET, SO_REUSEADDR,
1244 (const char *)&reuse_addr, sizeof(reuse_addr));
1245 if (ret == -1) {
1246 fprintf(stderr, "setsockopt() failed\n");
1247 exit(1);
1251 if (bind(vs->lsock, addr, addrlen) == -1) {
1252 fprintf(stderr, "bind() failed\n");
1253 exit(1);
1256 if (listen(vs->lsock, 1) == -1) {
1257 fprintf(stderr, "listen() failed\n");
1258 exit(1);
1261 ret = qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs);
1262 if (ret == -1) {
1263 exit(1);