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2011-06-24 Initial commit of d32e8d0 from qemu-kvm
1 #define CONCAT_I(a, b) a ## b
2 #define CONCAT(a, b) CONCAT_I(a, b)
3 #define pixel_t CONCAT(uint, CONCAT(BPP, _t))
4 #ifdef GENERIC
5 #define NAME CONCAT(generic_, BPP)
6 #else
7 #define NAME BPP
8 #endif
9
10 static void CONCAT(send_hextile_tile_, NAME)(VncState *vs,
11 int x, int y, int w, int h,
12 void *last_bg_,
13 void *last_fg_,
14 int *has_bg, int *has_fg)
15 {
16 VncDisplay *vd = vs->vd;
17 uint8_t *row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds);
18 pixel_t *irow = (pixel_t *)row;
19 int j, i;
20 pixel_t *last_bg = (pixel_t *)last_bg_;
21 pixel_t *last_fg = (pixel_t *)last_fg_;
22 pixel_t bg = 0;
23 pixel_t fg = 0;
24 int n_colors = 0;
25 int bg_count = 0;
26 int fg_count = 0;
27 int flags = 0;
28 uint8_t data[(vs->clientds.pf.bytes_per_pixel + 2) * 16 * 16];
29 int n_data = 0;
30 int n_subtiles = 0;
31
32 for (j = 0; j < h; j++) {
33 for (i = 0; i < w; i++) {
34 switch (n_colors) {
35 case 0:
36 bg = irow[i];
37 n_colors = 1;
38 break;
39 case 1:
40 if (irow[i] != bg) {
41 fg = irow[i];
42 n_colors = 2;
43 }
44 break;
45 case 2:
46 if (irow[i] != bg && irow[i] != fg) {
47 n_colors = 3;
48 } else {
49 if (irow[i] == bg)
50 bg_count++;
51 else if (irow[i] == fg)
52 fg_count++;
53 }
54 break;
55 default:
56 break;
57 }
58 }
59 if (n_colors > 2)
60 break;
61 irow += ds_get_linesize(vs->ds) / sizeof(pixel_t);
62 }
63
64 if (n_colors > 1 && fg_count > bg_count) {
65 pixel_t tmp = fg;
66 fg = bg;
67 bg = tmp;
68 }
69
70 if (!*has_bg || *last_bg != bg) {
71 flags |= 0x02;
72 *has_bg = 1;
73 *last_bg = bg;
74 }
75
76 if (n_colors < 3 && (!*has_fg || *last_fg != fg)) {
77 flags |= 0x04;
78 *has_fg = 1;
79 *last_fg = fg;
80 }
81
82 switch (n_colors) {
83 case 1:
84 n_data = 0;
85 break;
86 case 2:
87 flags |= 0x08;
88
89 irow = (pixel_t *)row;
90
91 for (j = 0; j < h; j++) {
92 int min_x = -1;
93 for (i = 0; i < w; i++) {
94 if (irow[i] == fg) {
95 if (min_x == -1)
96 min_x = i;
97 } else if (min_x != -1) {
98 hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
99 n_data += 2;
100 n_subtiles++;
101 min_x = -1;
102 }
103 }
104 if (min_x != -1) {
105 hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
106 n_data += 2;
107 n_subtiles++;
108 }
109 irow += ds_get_linesize(vs->ds) / sizeof(pixel_t);
110 }
111 break;
112 case 3:
113 flags |= 0x18;
114
115 irow = (pixel_t *)row;
116
117 if (!*has_bg || *last_bg != bg)
118 flags |= 0x02;
119
120 for (j = 0; j < h; j++) {
121 int has_color = 0;
122 int min_x = -1;
123 pixel_t color = 0; /* shut up gcc */
124
125 for (i = 0; i < w; i++) {
126 if (!has_color) {
127 if (irow[i] == bg)
128 continue;
129 color = irow[i];
130 min_x = i;
131 has_color = 1;
132 } else if (irow[i] != color) {
133 has_color = 0;
134 #ifdef GENERIC
135 vnc_convert_pixel(vs, data + n_data, color);
136 n_data += vs->clientds.pf.bytes_per_pixel;
137 #else
138 memcpy(data + n_data, &color, sizeof(color));
139 n_data += sizeof(pixel_t);
140 #endif
141 hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
142 n_data += 2;
143 n_subtiles++;
144
145 min_x = -1;
146 if (irow[i] != bg) {
147 color = irow[i];
148 min_x = i;
149 has_color = 1;
150 }
151 }
152 }
153 if (has_color) {
154 #ifdef GENERIC
155 vnc_convert_pixel(vs, data + n_data, color);
156 n_data += vs->clientds.pf.bytes_per_pixel;
157 #else
158 memcpy(data + n_data, &color, sizeof(color));
159 n_data += sizeof(pixel_t);
160 #endif
161 hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
162 n_data += 2;
163 n_subtiles++;
164 }
165 irow += ds_get_linesize(vs->ds) / sizeof(pixel_t);
166 }
167
168 /* A SubrectsColoured subtile invalidates the foreground color */
169 *has_fg = 0;
170 if (n_data > (w * h * sizeof(pixel_t))) {
171 n_colors = 4;
172 flags = 0x01;
173 *has_bg = 0;
174
175 /* we really don't have to invalidate either the bg or fg
176 but we've lost the old values. oh well. */
177 }
178 default:
179 break;
180 }
181
182 if (n_colors > 3) {
183 flags = 0x01;
184 *has_fg = 0;
185 *has_bg = 0;
186 n_colors = 4;
187 }
188
189 vnc_write_u8(vs, flags);
190 if (n_colors < 4) {
191 if (flags & 0x02)
192 vs->write_pixels(vs, &vd->server->pf, last_bg, sizeof(pixel_t));
193 if (flags & 0x04)
194 vs->write_pixels(vs, &vd->server->pf, last_fg, sizeof(pixel_t));
195 if (n_subtiles) {
196 vnc_write_u8(vs, n_subtiles);
197 vnc_write(vs, data, n_data);
198 }
199 } else {
200 for (j = 0; j < h; j++) {
201 vs->write_pixels(vs, &vd->server->pf, row,
202 w * ds_get_bytes_per_pixel(vs->ds));
203 row += ds_get_linesize(vs->ds);
204 }
205 }
206 }
207
208 #undef NAME
209 #undef pixel_t
210 #undef CONCAT_I
211 #undef CONCAT
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