bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 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)) |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 4 | #ifdef GENERIC |
aliguori | 7eac3a8 | 2008-09-15 16:03:41 +0000 | [diff] [blame] | 5 | #define NAME CONCAT(generic_, BPP) |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 6 | #else |
| 7 | #define NAME BPP |
| 8 | #endif |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 9 | |
Peter Maydell | e12acaf | 2023-08-18 16:10:56 +0100 | [diff] [blame] | 10 | #define MAX_BYTES_PER_PIXEL 4 |
| 11 | |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 12 | static void CONCAT(send_hextile_tile_, NAME)(VncState *vs, |
| 13 | int x, int y, int w, int h, |
aliguori | 7eac3a8 | 2008-09-15 16:03:41 +0000 | [diff] [blame] | 14 | void *last_bg_, |
| 15 | void *last_fg_, |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 16 | int *has_bg, int *has_fg) |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 17 | { |
Stefano Stabellini | 1fc6241 | 2009-08-03 10:54:32 +0100 | [diff] [blame] | 18 | VncDisplay *vd = vs->vd; |
Gerd Hoffmann | 9f64916 | 2012-10-10 13:29:43 +0200 | [diff] [blame] | 19 | uint8_t *row = vnc_server_fb_ptr(vd, x, y); |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 20 | pixel_t *irow = (pixel_t *)row; |
| 21 | int j, i; |
aliguori | 7eac3a8 | 2008-09-15 16:03:41 +0000 | [diff] [blame] | 22 | pixel_t *last_bg = (pixel_t *)last_bg_; |
| 23 | pixel_t *last_fg = (pixel_t *)last_fg_; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 24 | pixel_t bg = 0; |
| 25 | pixel_t fg = 0; |
| 26 | int n_colors = 0; |
| 27 | int bg_count = 0; |
| 28 | int fg_count = 0; |
| 29 | int flags = 0; |
Peter Maydell | e12acaf | 2023-08-18 16:10:56 +0100 | [diff] [blame] | 30 | uint8_t data[(MAX_BYTES_PER_PIXEL + 2) * 16 * 16]; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 31 | int n_data = 0; |
| 32 | int n_subtiles = 0; |
| 33 | |
Peter Maydell | e12acaf | 2023-08-18 16:10:56 +0100 | [diff] [blame] | 34 | /* Enforced by set_pixel_format() */ |
| 35 | assert(vs->client_pf.bytes_per_pixel <= MAX_BYTES_PER_PIXEL); |
| 36 | |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 37 | for (j = 0; j < h; j++) { |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 38 | for (i = 0; i < w; i++) { |
| 39 | switch (n_colors) { |
| 40 | case 0: |
| 41 | bg = irow[i]; |
| 42 | n_colors = 1; |
| 43 | break; |
| 44 | case 1: |
| 45 | if (irow[i] != bg) { |
| 46 | fg = irow[i]; |
| 47 | n_colors = 2; |
| 48 | } |
| 49 | break; |
| 50 | case 2: |
| 51 | if (irow[i] != bg && irow[i] != fg) { |
| 52 | n_colors = 3; |
| 53 | } else { |
| 54 | if (irow[i] == bg) |
| 55 | bg_count++; |
| 56 | else if (irow[i] == fg) |
| 57 | fg_count++; |
| 58 | } |
| 59 | break; |
| 60 | default: |
| 61 | break; |
| 62 | } |
| 63 | } |
| 64 | if (n_colors > 2) |
| 65 | break; |
| 66 | irow += vnc_server_fb_stride(vd) / sizeof(pixel_t); |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | if (n_colors > 1 && fg_count > bg_count) { |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 70 | pixel_t tmp = fg; |
| 71 | fg = bg; |
| 72 | bg = tmp; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | if (!*has_bg || *last_bg != bg) { |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 76 | flags |= 0x02; |
| 77 | *has_bg = 1; |
| 78 | *last_bg = bg; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 79 | } |
| 80 | |
Anthony Liguori | 02c2b87 | 2009-12-14 14:11:56 -0600 | [diff] [blame] | 81 | if (n_colors < 3 && (!*has_fg || *last_fg != fg)) { |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 82 | flags |= 0x04; |
| 83 | *has_fg = 1; |
| 84 | *last_fg = fg; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | switch (n_colors) { |
| 88 | case 1: |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 89 | n_data = 0; |
| 90 | break; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 91 | case 2: |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 92 | flags |= 0x08; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 93 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 94 | irow = (pixel_t *)row; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 95 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 96 | for (j = 0; j < h; j++) { |
| 97 | int min_x = -1; |
| 98 | for (i = 0; i < w; i++) { |
| 99 | if (irow[i] == fg) { |
| 100 | if (min_x == -1) |
| 101 | min_x = i; |
| 102 | } else if (min_x != -1) { |
| 103 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
| 104 | n_data += 2; |
| 105 | n_subtiles++; |
| 106 | min_x = -1; |
| 107 | } |
| 108 | } |
| 109 | if (min_x != -1) { |
| 110 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
| 111 | n_data += 2; |
| 112 | n_subtiles++; |
| 113 | } |
| 114 | irow += vnc_server_fb_stride(vd) / sizeof(pixel_t); |
| 115 | } |
| 116 | break; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 117 | case 3: |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 118 | flags |= 0x18; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 119 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 120 | irow = (pixel_t *)row; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 121 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 122 | if (!*has_bg || *last_bg != bg) |
| 123 | flags |= 0x02; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 124 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 125 | for (j = 0; j < h; j++) { |
| 126 | int has_color = 0; |
| 127 | int min_x = -1; |
| 128 | pixel_t color = 0; /* shut up gcc */ |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 129 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 130 | for (i = 0; i < w; i++) { |
| 131 | if (!has_color) { |
| 132 | if (irow[i] == bg) |
| 133 | continue; |
| 134 | color = irow[i]; |
| 135 | min_x = i; |
| 136 | has_color = 1; |
| 137 | } else if (irow[i] != color) { |
| 138 | has_color = 0; |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 139 | #ifdef GENERIC |
| 140 | vnc_convert_pixel(vs, data + n_data, color); |
Gerd Hoffmann | 9f64916 | 2012-10-10 13:29:43 +0200 | [diff] [blame] | 141 | n_data += vs->client_pf.bytes_per_pixel; |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 142 | #else |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 143 | memcpy(data + n_data, &color, sizeof(color)); |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 144 | n_data += sizeof(pixel_t); |
| 145 | #endif |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 146 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
| 147 | n_data += 2; |
| 148 | n_subtiles++; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 149 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 150 | min_x = -1; |
| 151 | if (irow[i] != bg) { |
| 152 | color = irow[i]; |
| 153 | min_x = i; |
| 154 | has_color = 1; |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | if (has_color) { |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 159 | #ifdef GENERIC |
| 160 | vnc_convert_pixel(vs, data + n_data, color); |
Gerd Hoffmann | 9f64916 | 2012-10-10 13:29:43 +0200 | [diff] [blame] | 161 | n_data += vs->client_pf.bytes_per_pixel; |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 162 | #else |
| 163 | memcpy(data + n_data, &color, sizeof(color)); |
| 164 | n_data += sizeof(pixel_t); |
| 165 | #endif |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 166 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
| 167 | n_data += 2; |
| 168 | n_subtiles++; |
| 169 | } |
| 170 | irow += vnc_server_fb_stride(vd) / sizeof(pixel_t); |
| 171 | } |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 172 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 173 | /* A SubrectsColoured subtile invalidates the foreground color */ |
| 174 | *has_fg = 0; |
| 175 | if (n_data > (w * h * sizeof(pixel_t))) { |
| 176 | n_colors = 4; |
| 177 | flags = 0x01; |
| 178 | *has_bg = 0; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 179 | |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 180 | /* we really don't have to invalidate either the bg or fg |
| 181 | but we've lost the old values. oh well. */ |
| 182 | } |
Stefan Weil | 0ea5c0c | 2012-02-25 14:57:03 +0100 | [diff] [blame] | 183 | break; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 184 | default: |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 185 | break; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | if (n_colors > 3) { |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 189 | flags = 0x01; |
| 190 | *has_fg = 0; |
| 191 | *has_bg = 0; |
| 192 | n_colors = 4; |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | vnc_write_u8(vs, flags); |
| 196 | if (n_colors < 4) { |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 197 | if (flags & 0x02) |
| 198 | vs->write_pixels(vs, last_bg, sizeof(pixel_t)); |
| 199 | if (flags & 0x04) |
| 200 | vs->write_pixels(vs, last_fg, sizeof(pixel_t)); |
| 201 | if (n_subtiles) { |
| 202 | vnc_write_u8(vs, n_subtiles); |
| 203 | vnc_write(vs, data, n_data); |
| 204 | } |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 205 | } else { |
Paolo Bonzini | b86d01b | 2018-12-14 12:38:28 +0100 | [diff] [blame] | 206 | for (j = 0; j < h; j++) { |
| 207 | vs->write_pixels(vs, row, w * 4); |
| 208 | row += vnc_server_fb_stride(vd); |
| 209 | } |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 210 | } |
| 211 | } |
| 212 | |
Peter Maydell | e12acaf | 2023-08-18 16:10:56 +0100 | [diff] [blame] | 213 | #undef MAX_BYTES_PER_PIXEL |
bellard | 3512779 | 2006-05-14 18:11:49 +0000 | [diff] [blame] | 214 | #undef NAME |
bellard | 2423686 | 2006-04-30 21:28:36 +0000 | [diff] [blame] | 215 | #undef pixel_t |
| 216 | #undef CONCAT_I |
| 217 | #undef CONCAT |