42 |
42 |
|
43 |
43 |
typedef int VncReadEvent(VncState *vs, char *data, size_t len);
|
44 |
44 |
|
|
45 |
typedef void VncWritePixels(VncState *vs, void *data, int size);
|
|
46 |
|
|
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);
|
|
52 |
|
45 |
53 |
struct VncState
|
46 |
54 |
{
|
47 |
55 |
QEMUTimer *timer;
|
... | ... | |
53 |
61 |
int height;
|
54 |
62 |
uint64_t dirty_row[768];
|
55 |
63 |
char *old_data;
|
56 |
|
int depth;
|
|
64 |
int depth; /* internal VNC frame buffer byte per pixel */
|
57 |
65 |
int has_resize;
|
58 |
66 |
int has_hextile;
|
59 |
67 |
Buffer output;
|
60 |
68 |
Buffer input;
|
61 |
69 |
kbd_layout_t *kbd_layout;
|
|
70 |
/* current output mode information */
|
|
71 |
VncWritePixels *write_pixels;
|
|
72 |
VncSendHextileTile *send_hextile_tile;
|
|
73 |
int pix_bpp, pix_big_endian;
|
|
74 |
int red_shift, red_max, red_shift1;
|
|
75 |
int green_shift, green_max, green_shift1;
|
|
76 |
int blue_shift, blue_max, blue_shift1;
|
62 |
77 |
|
63 |
78 |
VncReadEvent *read_handler;
|
64 |
79 |
size_t read_handler_expect;
|
... | ... | |
130 |
145 |
}
|
131 |
146 |
}
|
132 |
147 |
|
|
148 |
/* fastest code */
|
|
149 |
static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
|
|
150 |
{
|
|
151 |
vnc_write(vs, pixels, size);
|
|
152 |
}
|
|
153 |
|
|
154 |
/* slowest but generic code. */
|
|
155 |
static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
|
|
156 |
{
|
|
157 |
unsigned int r, g, b;
|
|
158 |
|
|
159 |
r = (v >> vs->red_shift1) & vs->red_max;
|
|
160 |
g = (v >> vs->green_shift1) & vs->green_max;
|
|
161 |
b = (v >> vs->blue_shift1) & vs->blue_max;
|
|
162 |
v = (r << vs->red_shift) |
|
|
163 |
(g << vs->green_shift) |
|
|
164 |
(b << vs->blue_shift);
|
|
165 |
switch(vs->pix_bpp) {
|
|
166 |
case 1:
|
|
167 |
buf[0] = v;
|
|
168 |
break;
|
|
169 |
case 2:
|
|
170 |
if (vs->pix_big_endian) {
|
|
171 |
buf[0] = v >> 8;
|
|
172 |
buf[1] = v;
|
|
173 |
} else {
|
|
174 |
buf[1] = v >> 8;
|
|
175 |
buf[0] = v;
|
|
176 |
}
|
|
177 |
break;
|
|
178 |
default:
|
|
179 |
case 4:
|
|
180 |
if (vs->pix_big_endian) {
|
|
181 |
buf[0] = v >> 24;
|
|
182 |
buf[1] = v >> 16;
|
|
183 |
buf[2] = v >> 8;
|
|
184 |
buf[3] = v;
|
|
185 |
} else {
|
|
186 |
buf[3] = v >> 24;
|
|
187 |
buf[2] = v >> 16;
|
|
188 |
buf[1] = v >> 8;
|
|
189 |
buf[0] = v;
|
|
190 |
}
|
|
191 |
break;
|
|
192 |
}
|
|
193 |
}
|
|
194 |
|
|
195 |
static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
|
|
196 |
{
|
|
197 |
uint32_t *pixels = pixels1;
|
|
198 |
uint8_t buf[4];
|
|
199 |
int n, i;
|
|
200 |
|
|
201 |
n = size >> 2;
|
|
202 |
for(i = 0; i < n; i++) {
|
|
203 |
vnc_convert_pixel(vs, buf, pixels[i]);
|
|
204 |
vnc_write(vs, buf, vs->pix_bpp);
|
|
205 |
}
|
|
206 |
}
|
|
207 |
|
133 |
208 |
static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h)
|
134 |
209 |
{
|
135 |
210 |
int i;
|
... | ... | |
139 |
214 |
|
140 |
215 |
row = vs->ds->data + y * vs->ds->linesize + x * vs->depth;
|
141 |
216 |
for (i = 0; i < h; i++) {
|
142 |
|
vnc_write(vs, row, w * vs->depth);
|
|
217 |
vs->write_pixels(vs, row, w * vs->depth);
|
143 |
218 |
row += vs->ds->linesize;
|
144 |
219 |
}
|
145 |
220 |
}
|
... | ... | |
162 |
237 |
#include "vnchextile.h"
|
163 |
238 |
#undef BPP
|
164 |
239 |
|
|
240 |
#define GENERIC
|
|
241 |
#define BPP 32
|
|
242 |
#include "vnchextile.h"
|
|
243 |
#undef BPP
|
|
244 |
#undef GENERIC
|
|
245 |
|
165 |
246 |
static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h)
|
166 |
247 |
{
|
167 |
248 |
int i, j;
|
168 |
249 |
int has_fg, has_bg;
|
169 |
250 |
uint32_t last_fg32, last_bg32;
|
170 |
|
uint16_t last_fg16, last_bg16;
|
171 |
|
uint8_t last_fg8, last_bg8;
|
172 |
251 |
|
173 |
252 |
vnc_framebuffer_update(vs, x, y, w, h, 5);
|
174 |
253 |
|
175 |
254 |
has_fg = has_bg = 0;
|
176 |
255 |
for (j = y; j < (y + h); j += 16) {
|
177 |
256 |
for (i = x; i < (x + w); i += 16) {
|
178 |
|
switch (vs->depth) {
|
179 |
|
case 1:
|
180 |
|
send_hextile_tile_8(vs, i, j, MIN(16, x + w - i), MIN(16, y + h - j),
|
181 |
|
&last_bg8, &last_fg8, &has_bg, &has_fg);
|
182 |
|
break;
|
183 |
|
case 2:
|
184 |
|
send_hextile_tile_16(vs, i, j, MIN(16, x + w - i), MIN(16, y + h - j),
|
185 |
|
&last_bg16, &last_fg16, &has_bg, &has_fg);
|
186 |
|
break;
|
187 |
|
case 4:
|
188 |
|
send_hextile_tile_32(vs, i, j, MIN(16, x + w - i), MIN(16, y + h - j),
|
189 |
|
&last_bg32, &last_fg32, &has_bg, &has_fg);
|
190 |
|
break;
|
191 |
|
default:
|
192 |
|
break;
|
193 |
|
}
|
|
257 |
vs->send_hextile_tile(vs, i, j,
|
|
258 |
MIN(16, x + w - i), MIN(16, y + h - j),
|
|
259 |
&last_bg32, &last_fg32, &has_bg, &has_fg);
|
194 |
260 |
}
|
195 |
261 |
}
|
196 |
262 |
}
|
... | ... | |
660 |
726 |
}
|
661 |
727 |
}
|
662 |
728 |
|
|
729 |
static int compute_nbits(unsigned int val)
|
|
730 |
{
|
|
731 |
int n;
|
|
732 |
n = 0;
|
|
733 |
while (val != 0) {
|
|
734 |
n++;
|
|
735 |
val >>= 1;
|
|
736 |
}
|
|
737 |
return n;
|
|
738 |
}
|
|
739 |
|
663 |
740 |
static void set_pixel_format(VncState *vs,
|
664 |
741 |
int bits_per_pixel, int depth,
|
665 |
742 |
int big_endian_flag, int true_color_flag,
|
666 |
743 |
int red_max, int green_max, int blue_max,
|
667 |
744 |
int red_shift, int green_shift, int blue_shift)
|
668 |
745 |
{
|
669 |
|
switch (bits_per_pixel) {
|
670 |
|
case 32:
|
671 |
|
case 24:
|
672 |
|
vs->depth = 4;
|
673 |
|
break;
|
674 |
|
case 16:
|
675 |
|
vs->depth = 2;
|
676 |
|
break;
|
677 |
|
case 8:
|
678 |
|
vs->depth = 1;
|
679 |
|
break;
|
680 |
|
default:
|
|
746 |
int host_big_endian_flag;
|
|
747 |
|
|
748 |
#ifdef WORDS_BIGENDIAN
|
|
749 |
host_big_endian_flag = 1;
|
|
750 |
#else
|
|
751 |
host_big_endian_flag = 0;
|
|
752 |
#endif
|
|
753 |
if (!true_color_flag) {
|
|
754 |
fail:
|
681 |
755 |
vnc_client_error(vs);
|
682 |
|
break;
|
|
756 |
return;
|
|
757 |
}
|
|
758 |
if (bits_per_pixel == 32 &&
|
|
759 |
host_big_endian_flag == big_endian_flag &&
|
|
760 |
red_max == 0xff && green_max == 0xff && blue_max == 0xff &&
|
|
761 |
red_shift == 16 && green_shift == 8 && blue_shift == 0) {
|
|
762 |
vs->depth = 4;
|
|
763 |
vs->write_pixels = vnc_write_pixels_copy;
|
|
764 |
vs->send_hextile_tile = send_hextile_tile_32;
|
|
765 |
} else
|
|
766 |
if (bits_per_pixel == 16 &&
|
|
767 |
host_big_endian_flag == big_endian_flag &&
|
|
768 |
red_max == 31 && green_max == 63 && blue_max == 31 &&
|
|
769 |
red_shift == 11 && green_shift == 5 && blue_shift == 0) {
|
|
770 |
vs->depth = 2;
|
|
771 |
vs->write_pixels = vnc_write_pixels_copy;
|
|
772 |
vs->send_hextile_tile = send_hextile_tile_16;
|
|
773 |
} else
|
|
774 |
if (bits_per_pixel == 8 &&
|
|
775 |
red_max == 7 && green_max == 7 && blue_max == 3 &&
|
|
776 |
red_shift == 5 && green_shift == 2 && blue_shift == 0) {
|
|
777 |
vs->depth = 1;
|
|
778 |
vs->write_pixels = vnc_write_pixels_copy;
|
|
779 |
vs->send_hextile_tile = send_hextile_tile_8;
|
|
780 |
} else
|
|
781 |
{
|
|
782 |
/* generic and slower case */
|
|
783 |
if (bits_per_pixel != 8 &&
|
|
784 |
bits_per_pixel != 16 &&
|
|
785 |
bits_per_pixel != 32)
|
|
786 |
goto fail;
|
|
787 |
vs->depth = 4;
|
|
788 |
vs->red_shift = red_shift;
|
|
789 |
vs->red_max = red_max;
|
|
790 |
vs->red_shift1 = 24 - compute_nbits(red_max);
|
|
791 |
vs->green_shift = green_shift;
|
|
792 |
vs->green_max = green_max;
|
|
793 |
vs->green_shift1 = 16 - compute_nbits(green_max);
|
|
794 |
vs->blue_shift = blue_shift;
|
|
795 |
vs->blue_max = blue_max;
|
|
796 |
vs->blue_shift1 = 8 - compute_nbits(blue_max);
|
|
797 |
vs->pix_bpp = bits_per_pixel / 8;
|
|
798 |
vs->pix_big_endian = big_endian_flag;
|
|
799 |
vs->write_pixels = vnc_write_pixels_generic;
|
|
800 |
vs->send_hextile_tile = send_hextile_tile_generic;
|
683 |
801 |
}
|
684 |
|
|
685 |
|
if (!true_color_flag)
|
686 |
|
vnc_client_error(vs);
|
687 |
802 |
|
688 |
803 |
vnc_dpy_resize(vs->ds, vs->ds->width, vs->ds->height);
|
689 |
804 |
memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
|
... | ... | |
774 |
889 |
|
775 |
890 |
vnc_write_u8(vs, vs->depth * 8); /* bits-per-pixel */
|
776 |
891 |
vnc_write_u8(vs, vs->depth * 8); /* depth */
|
|
892 |
#ifdef WORDS_BIGENDIAN
|
|
893 |
vnc_write_u8(vs, 1); /* big-endian-flag */
|
|
894 |
#else
|
777 |
895 |
vnc_write_u8(vs, 0); /* big-endian-flag */
|
|
896 |
#endif
|
778 |
897 |
vnc_write_u8(vs, 1); /* true-color-flag */
|
779 |
898 |
if (vs->depth == 4) {
|
780 |
899 |
vnc_write_u16(vs, 0xFF); /* red-max */
|
... | ... | |
783 |
902 |
vnc_write_u8(vs, 16); /* red-shift */
|
784 |
903 |
vnc_write_u8(vs, 8); /* green-shift */
|
785 |
904 |
vnc_write_u8(vs, 0); /* blue-shift */
|
|
905 |
vs->send_hextile_tile = send_hextile_tile_32;
|
786 |
906 |
} else if (vs->depth == 2) {
|
787 |
907 |
vnc_write_u16(vs, 31); /* red-max */
|
788 |
908 |
vnc_write_u16(vs, 63); /* green-max */
|
... | ... | |
790 |
910 |
vnc_write_u8(vs, 11); /* red-shift */
|
791 |
911 |
vnc_write_u8(vs, 5); /* green-shift */
|
792 |
912 |
vnc_write_u8(vs, 0); /* blue-shift */
|
|
913 |
vs->send_hextile_tile = send_hextile_tile_16;
|
793 |
914 |
} else if (vs->depth == 1) {
|
794 |
|
vnc_write_u16(vs, 3); /* red-max */
|
|
915 |
/* XXX: change QEMU pixel 8 bit pixel format to match the VNC one ? */
|
|
916 |
vnc_write_u16(vs, 7); /* red-max */
|
795 |
917 |
vnc_write_u16(vs, 7); /* green-max */
|
796 |
918 |
vnc_write_u16(vs, 3); /* blue-max */
|
797 |
919 |
vnc_write_u8(vs, 5); /* red-shift */
|
798 |
920 |
vnc_write_u8(vs, 2); /* green-shift */
|
799 |
921 |
vnc_write_u8(vs, 0); /* blue-shift */
|
|
922 |
vs->send_hextile_tile = send_hextile_tile_8;
|
800 |
923 |
}
|
|
924 |
vs->write_pixels = vnc_write_pixels_copy;
|
801 |
925 |
|
802 |
926 |
vnc_write(vs, pad, 3); /* padding */
|
803 |
927 |
|