1 | #define CONCAT_I(a, b) a ## b |
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2 | #define CONCAT(a, b) CONCAT_I(a, b) |
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3 | #define pixel_t CONCAT(uint, CONCAT(BPP, _t)) |
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4 | #ifdef GENERIC |
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5 | #define NAME generic |
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6 | #else |
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7 | #define NAME BPP |
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8 | #endif |
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9 | |
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10 | static void CONCAT(send_hextile_tile_, NAME)(VncState *vs, |
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11 | int x, int y, int w, int h, |
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12 | uint32_t *last_bg32, |
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13 | uint32_t *last_fg32, |
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14 | int *has_bg, int *has_fg) |
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15 | { |
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16 | uint8_t *row = (vs->ds->data + y * vs->ds->linesize + x * vs->depth); |
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17 | pixel_t *irow = (pixel_t *)row; |
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18 | int j, i; |
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19 | pixel_t *last_bg = (pixel_t *)last_bg32; |
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20 | pixel_t *last_fg = (pixel_t *)last_fg32; |
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21 | pixel_t bg = 0; |
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22 | pixel_t fg = 0; |
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23 | int n_colors = 0; |
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24 | int bg_count = 0; |
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25 | int fg_count = 0; |
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26 | int flags = 0; |
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27 | uint8_t data[(sizeof(pixel_t) + 2) * 16 * 16]; |
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28 | int n_data = 0; |
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29 | int n_subtiles = 0; |
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30 | |
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31 | for (j = 0; j < h; j++) { |
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32 | for (i = 0; i < w; i++) { |
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33 | switch (n_colors) { |
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34 | case 0: |
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35 | bg = irow[i]; |
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36 | n_colors = 1; |
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37 | break; |
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38 | case 1: |
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39 | if (irow[i] != bg) { |
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40 | fg = irow[i]; |
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41 | n_colors = 2; |
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42 | } |
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43 | break; |
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44 | case 2: |
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45 | if (irow[i] != bg && irow[i] != fg) { |
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46 | n_colors = 3; |
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47 | } else { |
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48 | if (irow[i] == bg) |
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49 | bg_count++; |
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50 | else if (irow[i] == fg) |
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51 | fg_count++; |
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52 | } |
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53 | break; |
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54 | default: |
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55 | break; |
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56 | } |
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57 | } |
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58 | if (n_colors > 2) |
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59 | break; |
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60 | irow += vs->ds->linesize / sizeof(pixel_t); |
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61 | } |
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62 | |
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63 | if (n_colors > 1 && fg_count > bg_count) { |
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64 | pixel_t tmp = fg; |
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65 | fg = bg; |
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66 | bg = tmp; |
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67 | } |
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68 | |
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69 | if (!*has_bg || *last_bg != bg) { |
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70 | flags |= 0x02; |
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71 | *has_bg = 1; |
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72 | *last_bg = bg; |
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73 | } |
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74 | |
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75 | if (!*has_fg || *last_fg != fg) { |
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76 | flags |= 0x04; |
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77 | *has_fg = 1; |
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78 | *last_fg = fg; |
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79 | } |
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80 | |
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81 | switch (n_colors) { |
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82 | case 1: |
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83 | n_data = 0; |
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84 | break; |
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85 | case 2: |
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86 | flags |= 0x08; |
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87 | |
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88 | irow = (pixel_t *)row; |
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89 | |
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90 | for (j = 0; j < h; j++) { |
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91 | int min_x = -1; |
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92 | for (i = 0; i < w; i++) { |
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93 | if (irow[i] == fg) { |
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94 | if (min_x == -1) |
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95 | min_x = i; |
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96 | } else if (min_x != -1) { |
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97 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
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98 | n_data += 2; |
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99 | n_subtiles++; |
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100 | min_x = -1; |
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101 | } |
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102 | } |
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103 | if (min_x != -1) { |
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104 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
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105 | n_data += 2; |
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106 | n_subtiles++; |
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107 | } |
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108 | irow += vs->ds->linesize / sizeof(pixel_t); |
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109 | } |
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110 | break; |
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111 | case 3: |
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112 | flags |= 0x18; |
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113 | |
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114 | irow = (pixel_t *)row; |
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115 | |
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116 | if (!*has_bg || *last_bg != bg) |
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117 | flags |= 0x02; |
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118 | |
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119 | for (j = 0; j < h; j++) { |
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120 | int has_color = 0; |
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121 | int min_x = -1; |
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122 | pixel_t color = 0; |
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123 | |
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124 | for (i = 0; i < w; i++) { |
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125 | if (!has_color) { |
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126 | if (irow[i] == bg) |
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127 | continue; |
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128 | color = irow[i]; |
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129 | min_x = i; |
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130 | has_color = 1; |
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131 | } else if (irow[i] != color) { |
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132 | has_color = 0; |
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133 | #ifdef GENERIC |
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134 | vnc_convert_pixel(vs, data + n_data, color); |
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135 | n_data += vs->pix_bpp; |
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136 | #else |
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137 | memcpy(data + n_data, &color, sizeof(color)); |
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138 | n_data += sizeof(pixel_t); |
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139 | #endif |
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140 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
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141 | n_data += 2; |
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142 | n_subtiles++; |
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143 | |
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144 | min_x = -1; |
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145 | if (irow[i] != bg) { |
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146 | color = irow[i]; |
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147 | min_x = i; |
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148 | has_color = 1; |
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149 | } |
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150 | } |
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151 | } |
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152 | if (has_color) { |
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153 | #ifdef GENERIC |
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154 | vnc_convert_pixel(vs, data + n_data, color); |
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155 | n_data += vs->pix_bpp; |
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156 | #else |
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157 | memcpy(data + n_data, &color, sizeof(color)); |
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158 | n_data += sizeof(pixel_t); |
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159 | #endif |
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160 | hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1); |
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161 | n_data += 2; |
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162 | n_subtiles++; |
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163 | } |
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164 | irow += vs->ds->linesize / sizeof(pixel_t); |
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165 | } |
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166 | |
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167 | /* A SubrectsColoured subtile invalidates the foreground color */ |
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168 | *has_fg = 0; |
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169 | if (n_data > (w * h * sizeof(pixel_t))) { |
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170 | n_colors = 4; |
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171 | flags = 0x01; |
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172 | *has_bg = 0; |
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173 | |
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174 | /* we really don't have to invalidate either the bg or fg |
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175 | but we've lost the old values. oh well. */ |
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176 | } |
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177 | default: |
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178 | break; |
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179 | } |
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180 | |
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181 | if (n_colors > 3) { |
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182 | flags = 0x01; |
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183 | *has_fg = 0; |
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184 | *has_bg = 0; |
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185 | n_colors = 4; |
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186 | } |
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187 | |
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188 | vnc_write_u8(vs, flags); |
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189 | if (n_colors < 4) { |
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190 | if (flags & 0x02) |
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191 | vs->write_pixels(vs, last_bg, sizeof(pixel_t)); |
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192 | if (flags & 0x04) |
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193 | vs->write_pixels(vs, last_fg, sizeof(pixel_t)); |
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194 | if (n_subtiles) { |
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195 | vnc_write_u8(vs, n_subtiles); |
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196 | vnc_write(vs, data, n_data); |
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197 | } |
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198 | } else { |
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199 | for (j = 0; j < h; j++) { |
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200 | vs->write_pixels(vs, row, w * vs->depth); |
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201 | row += vs->ds->linesize; |
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202 | } |
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203 | } |
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204 | } |
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205 | |
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206 | #undef NAME |
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207 | #undef pixel_t |
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208 | #undef CONCAT_I |
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209 | #undef CONCAT |
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