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1 #include "config.h"
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2
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3 #ifdef DRIVE_LINUXCON
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4
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5 #include <sys/stat.h>
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6 #include <sys/ioctl.h>
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7 #include <linux/kd.h>
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8
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9 #include "pwplib.h"
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10
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11 #include "tty.h"
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12
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13 /******************** vcsa code ********************/
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14
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15 struct{
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16 int fd;
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17 int width,height;
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18
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19 int fontw,fonth;
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20 u8*fontd;
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21 char*fontd_tab;
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22
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23 /* add cfd (control fd) or something */
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24 }pwp_linuxcon;
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25
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26 void vcsa_dump_attr()
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27 {
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28 char*buf=pwplib.videobuf.d;
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29 int ptr=4+pwp_linuxcon.width*
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30 ((pwp_linuxcon.height-pwplib.videobuf.height)&~1);
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31 if(ptr<4)ptr=4;
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32
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33 if(pwp_linuxcon.width==pwplib.videobuf.width)
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34 {
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35 lseek(pwp_linuxcon.fd,ptr,SEEK_SET);
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36 write(pwp_linuxcon.fd,buf,
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37 pwplib.videobuf.width*pwplib.videobuf.height*2);
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38 }else
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39 {
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40 int y=0,y1=pwplib.videobuf.height,w=pwplib.videobuf.width;
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41 ptr+=((pwp_linuxcon.width-pwplib.videobuf.width)&~1);
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42 if(y1>pwp_linuxcon.height)y1=pwp_linuxcon.height;
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43 if(w>pwp_linuxcon.width)w=pwp_linuxcon.width;
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44 w<<=1;
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45 for(;y<y1;y++)
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46 {
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47 lseek(pwp_linuxcon.fd,ptr,SEEK_SET);
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48 write(pwp_linuxcon.fd,buf,w);
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49 buf+=pwplib.videobuf.width*2;
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50 ptr+=pwp_linuxcon.width*2;
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51 }
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52 }
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53
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54 pwplib.timer_counter+=pwp_linuxcon.width*pwp_linuxcon.height*2;
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55 }
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56
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57 int vcsa_get()
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58 {
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59 int vcsa;
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60 int majmin;
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61
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62 { struct stat sbuf;
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63 int stderr2=dup(fileno(stderr));
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64 fstat(stderr2,&sbuf);
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65 majmin=sbuf.st_rdev;
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66 close(stderr2);
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67 }
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68
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69 if((majmin&~0x63)==4*256)
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70 {
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71 char buf[20];
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72 sprintf(buf,"/dev/vcsa%i",majmin&63);
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73 vcsa=open(buf,O_RDWR);
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74 if(vcsa>=0)return vcsa;
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75 }
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76 vcsa=open("/dev/vcsa",O_RDWR);
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77 if(vcsa>=0)return vcsa;
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78
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79 return -1;
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80 }
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81
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82 int vcsa_init() /* init vcsa device */
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83 {
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84 unsigned char vcsahdr[4];
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85 int vcsa=vcsa_get();
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86 if(vcsa<0)return 0;
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87
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88 read(vcsa,vcsahdr,4);
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89 pwp_linuxcon.fd=vcsa;
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90 pwplib.videobuf.height=pwp_linuxcon.height=vcsahdr[0];
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91 pwplib.videobuf.width=pwp_linuxcon.width=vcsahdr[1];
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92
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93 pwpwrite("* using vcsa device\n");
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94
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95 pwplib.dump_attr=vcsa_dump_attr;
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96 return 1;
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97 }
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98
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99
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100 /********************************************************/
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101
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102 /*** some people are lazy to update their headers ... ***/
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103
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104 #ifndef KDFONTOP
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105 #define KDFONTOP 0x4B72
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106
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107 struct console_font_op {
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108 unsigned int op;
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109 unsigned int flags;
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110 unsigned int width, height;
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111 unsigned int charcount;
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112 unsigned char *data;
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113 };
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114
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115 #define KD_FONT_OP_SET 0
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116 #define KD_FONT_OP_GET 1
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117 #define KD_FONT_OP_SET_DEFAULT 2
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118 #define KD_FONT_OP_COPY 3
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119
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120 #define KD_FONT_FLAG_DONT_RECALC 1
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121 #endif
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122
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123 /********************************************/
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124
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125 enum
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126 {
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127 GLY_CRAP=0,
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128 GLY_BLANK,
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129 GLY_FULL,
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130 GLY_TOP,
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131 GLY_BOTTOM,
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132 GLY_LEFT,
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133 GLY_RIGHT,
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134 };
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135
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136 int tty_linux_setfont(char*fontd,int w,int h)
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137 {
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138 struct console_font_op fontop;
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139 fontop.op=KD_FONT_OP_SET;
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140 fontop.flags=0;
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141 fontop.data=fontd;
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142 fontop.charcount=256;
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143 fontop.width=w;
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144 fontop.height=h;
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145
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146 return ioctl(2,KDFONTOP,&fontop);
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147 }
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148
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149 int tty_linux_setfont_tab()
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150 {
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151 char*font=malloc(pwp_linuxcon.fontw*32*sizeof(char));
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152 char*f=font,
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153 *s=pwp_linuxcon.fontd_tab;
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154
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155 int i,x,y;
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156
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157 for(i=0;i<256;i++)
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158 for(y=0;y<32;y++)
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159 {
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160 int b=0,x1=(pwp_linuxcon.fontw+7)&~7;
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161 for(x=0;x<x1;x++)
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162 {
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163 int pix;
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164
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165 if(y<pwp_linuxcon.fonth &&
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166 x<pwp_linuxcon.fontw)
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167 pix=*s++?1:0;else pix=0;
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168
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169 b<<=1;
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170 b|=pix;
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171
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172 if((x&7)==7)
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173 {
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174 *f++=b;
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175 b=0;
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176 }
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177 }
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178 }
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179
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180 return tty_linux_setfont(font,pwp_linuxcon.fontw,pwp_linuxcon.fonth);
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181 }
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182
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183 void tty_linux_restorefont()
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184 {
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185 tty_linux_setfont(
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186 pwp_linuxcon.fontd,
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187 pwp_linuxcon.fontw,
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188 pwp_linuxcon.fonth);
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189 }
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190
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191 int tty_linux_fixfont()
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192 {
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193 #if 0
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194 char newfont[pwp_linuxcon.fontw*
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195 pwp_linuxcon.fonth*sizeof(char)];
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196
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197 glyphgen_fixtoibm(
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198 pwp_linuxcon.fontd_tab,
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199 pwp_linuxcon.fontw,
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200 pwp_linuxcon.fonth);
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201
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202 return tty_linux_setfont_tab();
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203 #endif
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204
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205 return 0;
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206 }
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207
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208 /**********************************/
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209
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210 int tty_linux_analyzefont()
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211 {
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212 u8 analysis[256];
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213
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214 u8*s=pwp_linuxcon.fontd;
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215 char*d=pwp_linuxcon.fontd_tab;
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216 int c=0;
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217
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218 /* fprintf(stderr,"font analysis?\n");*/
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219
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220 for(;c<256;c++)
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221 {
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222 int x0=33,x1=-1,y0=33,y1=-1,x,y;
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223 int dens=0;
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224
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225 for(y=0;y<32;y++)
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226 {
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227 int byte;
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228 for(x=0;x<pwp_linuxcon.fontw;x++)
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229 {
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230 if(!(x&7))byte=*s++;
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231
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232 /* if(y<pwp_linuxcon.fonth)*d++=byte&128;*/
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233
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234 if(byte&128)
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235 {
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236 if(x<x0)x0=x;
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237 if(x>x1)x1=x+1;
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238 if(y<y0)y0=y;
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239 if(y>y1)y1=y+1;
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240 dens++;
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241 }
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242 byte<<=1;
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243 }
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244 }
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245
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246 {int a=GLY_CRAP;
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247 int w=(x1-x0),h=(y1-y0);
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248
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249 if(h<=0)a=GLY_BLANK;
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250 else
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251 {
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252 if(w>=pwp_linuxcon.fontw-1)
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253 {
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254 if(h>=pwp_linuxcon.fontw-1)a=GLY_FULL;
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255 else
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256 if(y1>=pwp_linuxcon.fontw-2)a=GLY_BOTTOM;
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257 else
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258 if(!y0)a=GLY_TOP;
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259 }
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260 else
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261 if(h>=pwp_linuxcon.fonth-1)
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262 {
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263 if(x1>=pwp_linuxcon.fonth-2)a=GLY_RIGHT;
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264 else
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265 if(!x0)a=GLY_LEFT;
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266 }
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267 }
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268 analysis[c]=a;
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269 /* if(a)fprintf(stderr,"char %d: %d\n",c,a);*/
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270 }
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271 }
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272
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273 if(analysis[176]==GLY_FULL &&
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274 analysis[177]==GLY_FULL &&
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275 analysis[178]==GLY_FULL &&
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276 analysis[219]==GLY_FULL &&
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277 analysis[220]==GLY_BOTTOM &&
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278 analysis[223]==GLY_TOP) return 2;
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279
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280 /* fprintf(stderr,"done\n");*/
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281
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282 return 1;
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283 }
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284
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285 int tty_linux_getfont()
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286 {
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287 {
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288 struct console_font_op fontop;
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289 fontop.op=KD_FONT_OP_GET;
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290 fontop.flags=0;
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291 fontop.data=NULL;
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292 fontop.charcount=0;
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293
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294 /* if handle 2 doesn't work, try handles 1 and 0?
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295 also with vcsa */
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296
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297 /* use this bitreverter somewhere (X11-1bpp code?) not here.
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298 replaces lookups in fast machines.
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299
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300 a=((a&0xf0f0f0f0)>>4)|((a&0x0f0f0f0f)<<4);
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301 a=((a&0xcccccccc)>>2)|((a&0x33333333)<<2);
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302 a=((a&0xaaaaaaaa)>>1)|((a&0x55555555)<<1);
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303 */
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304
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305 ioctl(2,KDFONTOP,&fontop);
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306 if(fontop.charcount)
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307 {
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308 pwp_linuxcon.fontw=fontop.width;
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309 pwp_linuxcon.fonth=fontop.height;
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310
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311 if(!fontop.data)
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312 {
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313 fontop.data=malloc(((pwp_linuxcon.fontw+7)>>3)*32*
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314 fontop.charcount*sizeof(u8));
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315 fontop.op=KD_FONT_OP_GET;
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316 fontop.flags=KD_FONT_FLAG_DONT_RECALC;
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317 if(ioctl(2,KDFONTOP,&fontop)<0)
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318 goto oldcall;
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319 }
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320
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321 pwp_linuxcon.fontd=fontop.data;
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322 goto gotfont;
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323 }
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324 }
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325
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326 oldcall:
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327 {
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328 struct consolefontdesc fontx;
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329 fontx.chardata=malloc(512*32*sizeof(u8));
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330
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331 if(ioctl(2,GIO_FONTX,&fontx)<0)return 0;
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332
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333 pwp_linuxcon.fontw=8;
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334 pwp_linuxcon.fonth=fontx.charheight;
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335 pwp_linuxcon.fontd=fontx.chardata;
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336 }
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337
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338 gotfont:
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339
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340 pwp_linuxcon.fontd_tab=
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341 malloc(pwp_linuxcon.fontw*pwp_linuxcon.fonth*sizeof(char));
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342
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343 return tty_linux_analyzefont();
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344 }
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345
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346 /********************************************************/
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347
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348 extern void tty_ansicol_dump_attr();
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349 extern void tty_ansicol_prep_attr();
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350
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351 int tty_linux_initstring()
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352 {
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353 write(pwp_tty.fd,"\33[11m",5*sizeof(char)); /* select ibmpc charset */
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354 tty_vt_initstring();
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355 }
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356
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357 int tty_linux_init()
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358 {
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359 if(!vcsa_init())
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360 {
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361 pwplib.dump_attr=tty_ansicol_dump_attr;
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362 pwplib.prep_attr=tty_ansicol_prep_attr;
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363 pwpwrite("* no vcsa access - using tty\n");
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364 /* send init */
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365 }
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366
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367 {int i=tty_linux_getfont();
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368
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369 pwpwrite("* font analysis: ");
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370
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371 if(i==0)pwpwrite("can't access - assuming ibm\n");else
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372 if(i==1)pwpwrite("no ibm rasters - using ascii\n");else
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373 if(i==2)pwpwrite("ibm rasters found - using ibm\n");
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374
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375 if(i==0 || i==2) conv_init(2,0,0);
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376 else conv_init(2,2,1);
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377 }
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378
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379 tty_linux_initstring();
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380 }
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381
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382 #endif
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383
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384 /*
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385 additional stuff:
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386
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387 - font customization:
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388 - save font
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389 - if evil: if font bigger than 8x8, change to 8x8
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390 - include rasterchars (64 chars as in vt220 driver)
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391 ...
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392 - restore old font
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393 */
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