[a06aa8b] | 1 | /*
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| 2 | * Copyright (C) 2017 The Contributors
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| 3 | *
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| 4 | * This program is free software: you can redistribute it and/or modify
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| 5 | * it under the terms of the GNU General Public License as published by
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| 6 | * the Free Software Foundation, either version 3 of the License, or (at
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| 7 | * your option) any later version.
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| 8 | *
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| 9 | * This program is distributed in the hope that it will be useful, but
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| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 12 | * General Public License for more details.
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| 13 | *
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| 14 | * A copy of the GNU General Public License can be found in the file
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[2147e53] | 15 | * "gpl.txt" in the top directory of this repository.
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[a06aa8b] | 16 | */
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| 17 |
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| 18 | #include <all.h>
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| 19 |
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[4c71d39] | 20 | #define ver(...) _ver(lcd_verbose, 0, __VA_ARGS__)
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| 21 | #define ver2(...) _ver(lcd_verbose, 1, __VA_ARGS__)
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| 22 | #define ver3(...) _ver(lcd_verbose, 2, __VA_ARGS__)
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[a06aa8b] | 23 |
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[7ba68aa] | 24 | #define WIN_W (1520 * 2 / 3)
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| 25 | #define WIN_H (950 * 2 / 3)
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| 26 |
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| 27 | #define CON_W 86
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| 28 | #define CON_H 25
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| 29 |
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| 30 | #define CON_BGR 0x00000000
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| 31 | #define CON_BEL 0x00808080
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| 32 | #define CON_CUR 0x00e87000
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| 33 | #define CON_FGR ((SDL_Color){ .r = 255, .b = 255, .g = 255, .a = 255 })
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| 34 |
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| 35 | #define BEL_CYC 10000
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| 36 |
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| 37 | #define G_INIT 0x40
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| 38 | #define G_MWRITE 0x42
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| 39 | #define G_MREAD 0x43
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| 40 | #define G_SETSAD 0x44
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| 41 | #define G_CRSWR 0x46
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| 42 | #define G_CRSRD 0x47
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| 43 | #define G_CRSMRT 0x4C
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| 44 | #define G_CRSMLT 0x4D
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| 45 | #define G_CRSMUP 0x4E
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| 46 | #define G_CRSMDN 0x4F
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| 47 | #define G_ERASE 0x52
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| 48 | #define G_SLEEP 0x53
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| 49 | #define G_DSPCTL 0x58
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| 50 | #define G_HSCRL 0x5A
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| 51 | #define G_OVRLAY 0x5B
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| 52 | #define G_CGRAM 0x5C
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| 53 | #define G_CRSFRM 0x5D
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| 54 |
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| 55 | static uint8_t mem[CON_H][CON_W + 1];
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| 56 |
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| 57 | static SDL_Window *win;
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| 58 | static SDL_Renderer *ren;
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| 59 | static SDL_atomic_t frame;
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| 60 |
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| 61 | static TTF_Font *fon;
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| 62 | static int32_t fon_w, fon_h;
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| 63 |
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| 64 | static int32_t sur_w, sur_h;
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| 65 | static SDL_Surface *sur;
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| 66 |
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| 67 | static int32_t cur_x = 0, cur_y = 0;
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| 68 | static int32_t bel = 0;
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| 69 |
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| 70 | static int32_t current_op = 0x00;
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| 71 | static uint32_t cur_ad = 0;
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| 72 | static int32_t cur_ad_c = 0;
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| 73 |
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[4c71d39] | 74 | int32_t lcd_verbose = 0;
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[a06aa8b] | 75 |
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[7ba68aa] | 76 | static void scroll(void)
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| 77 | {
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| 78 | memmove(mem, mem + 1, (CON_H - 1) * (CON_W + 1));
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| 79 | memset(mem + (CON_H - 1), ' ', CON_W);
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| 80 | }
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| 81 |
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| 82 | static void forw(void)
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| 83 | {
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| 84 | if (cur_x < CON_W - 1) {
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| 85 | ++cur_x;
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| 86 | return;
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| 87 | }
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| 88 |
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| 89 | if (cur_y == CON_H - 1) {
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| 90 | cur_x = 0;
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| 91 | scroll();
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| 92 | return;
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| 93 | }
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| 94 |
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| 95 | cur_x = 0;
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| 96 | ++cur_y;
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| 97 | }
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| 98 |
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| 99 | static void back(void)
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| 100 | {
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| 101 | if (cur_x > 0) {
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| 102 | --cur_x;
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| 103 | return;
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| 104 | }
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| 105 |
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| 106 | if (cur_y == 0) {
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| 107 | return;
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| 108 | }
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| 109 |
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| 110 | cur_x = CON_W - 1;
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| 111 | --cur_y;
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| 112 | }
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| 113 |
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| 114 | static void down(void)
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| 115 | {
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| 116 | if (cur_y < CON_H - 1) {
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| 117 | ++cur_y;
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| 118 | return;
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| 119 | }
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| 120 |
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| 121 | scroll();
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| 122 | }
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| 123 |
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| 124 | static void mvcur(uint32_t cur_addr) {
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| 125 | uint32_t n_cur_x = cur_addr % 85;
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| 126 | uint32_t n_cur_y = cur_addr / 85;
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| 127 |
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| 128 | printf("Cur x %u\n", n_cur_x);
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| 129 | printf("Cur y %u\n", n_cur_y);
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| 130 | if (n_cur_x < CON_W - 1) {
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| 131 | cur_x = (int32_t) n_cur_x;
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| 132 | }
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| 133 | else {
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| 134 | err("invalid x cursor pos in lcd %u:%d", n_cur_x, CON_W);
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| 135 | }
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| 136 |
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| 137 | if (n_cur_y < CON_H - 1) {
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| 138 | cur_y = (int32_t) n_cur_y;
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| 139 | }
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| 140 | else {
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| 141 | err("invalid y cursor pos in lcd %u:%d", n_cur_y, CON_H);
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| 142 | }
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| 143 | }
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| 144 |
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| 145 | static void echo(uint8_t c)
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| 146 | {
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| 147 | if (c < 32) {
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| 148 | switch (c) {
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| 149 | case '\r':
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| 150 | cur_x = 0;
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| 151 | break;
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| 152 |
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| 153 | case '\n':
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| 154 | down();
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| 155 | break;
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| 156 |
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| 157 | case '\b':
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| 158 | back();
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| 159 | break;
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| 160 |
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| 161 | case '\a':
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| 162 | bel = BEL_CYC;
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| 163 | break;
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| 164 |
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| 165 | case 0:
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| 166 | mem[cur_y][cur_x] = ' ';
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| 167 | forw();
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| 168 | break;
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| 169 |
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| 170 | case 28:
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| 171 | // TODO
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| 172 | echo('^');
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| 173 | echo((uint8_t)(c + '@'));
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| 174 | break;
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| 175 |
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| 176 | default:
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| 177 | echo('^');
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| 178 | echo((uint8_t)(c + '@'));
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| 179 | ver2("lcd default case echo %u", c);
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| 180 | return;
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| 181 | }
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| 182 | }
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| 183 | else {
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| 184 | mem[cur_y][cur_x] = c;
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| 185 | forw();
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| 186 | }
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| 187 |
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| 188 | SDL_AtomicAdd(&frame, 1);
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| 189 | }
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| 190 |
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| 191 | void lcd_sdl(void)
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| 192 | {
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| 193 | ver3("lcd_sdl()");
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| 194 |
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| 195 | static int32_t last = 0;
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| 196 | int32_t now = SDL_AtomicGet(&frame);
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| 197 |
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| 198 | if (last == now) {
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| 199 | ver3("no update");
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| 200 | return;
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| 201 | }
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| 202 |
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| 203 | last = now;
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| 204 |
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| 205 | if (SDL_FillRect(sur, NULL, bel == 0 ? CON_BGR : CON_BEL) < 0) {
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| 206 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 207 | }
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| 208 |
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| 209 | if (SDL_FillRect(sur, &(SDL_Rect){
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| 210 | .x = cur_x * fon_w,
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| 211 | .y = cur_y * fon_h,
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| 212 | .w = fon_w,
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| 213 | .h = fon_h
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| 214 | }, CON_CUR) < 0) {
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| 215 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 216 | }
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| 217 |
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| 218 | for (int32_t y = 0; y < CON_H; ++y) {
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| 219 | char line[CON_W + 1];
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| 220 |
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| 221 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 222 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 223 | }
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| 224 |
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| 225 | memcpy(line, mem[y], CON_W + 1);
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| 226 |
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| 227 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 228 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 229 | }
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| 230 |
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| 231 | SDL_Surface *lin = TTF_RenderText_Blended(fon, line, CON_FGR);
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| 232 |
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| 233 | if (lin == NULL) {
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| 234 | fail("TTF_RenderText_Blended() failed: %s", TTF_GetError());
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| 235 | }
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| 236 |
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| 237 | if (SDL_BlitSurface(lin, NULL, sur, &(SDL_Rect){
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| 238 | .x = 0,
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| 239 | .y = y * fon_h,
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| 240 | .w = CON_W * fon_w,
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| 241 | .h = fon_h
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| 242 | })) {
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| 243 | fail("SDL_BlitSurface() failed: %s", SDL_GetError());
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| 244 | }
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| 245 |
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| 246 | SDL_FreeSurface(lin);
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| 247 | }
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| 248 |
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| 249 | SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, sur);
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| 250 |
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| 251 | if (tex == NULL) {
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| 252 | fail("SDL_CreateTextureFromSurface() failed: %s", SDL_GetError());
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| 253 | }
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| 254 |
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| 255 | if (SDL_RenderCopy(ren, tex, NULL, NULL) < 0) {
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| 256 | fail("SDL_RenderCopy() failed: %s", SDL_GetError());
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| 257 | }
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| 258 |
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| 259 | SDL_DestroyTexture(tex);
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| 260 | SDL_RenderPresent(ren);
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| 261 | }
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| 262 |
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| 263 |
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[a06aa8b] | 264 | void lcd_init(void)
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| 265 | {
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| 266 | ver("lcd init");
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[7ba68aa] | 267 |
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| 268 | win = SDL_CreateWindow("Front LCD", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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| 269 | WIN_W, WIN_H, 0);
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| 270 |
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| 271 | if (win == NULL) {
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| 272 | fail("SDL_CreateWindow() failed: %s", SDL_GetError());
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| 273 | }
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| 274 |
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| 275 | ren = SDL_CreateRenderer(win, -1, 0);
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| 276 |
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| 277 | if (ren == NULL) {
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| 278 | fail("SDL_CreateRenderer() failed: %s", SDL_GetError());
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| 279 | }
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| 280 |
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| 281 | SDL_AtomicSet(&frame, 1);
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| 282 |
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| 283 | SDL_RWops *ops = SDL_RWFromFile(font, "rb");
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| 284 |
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| 285 | if (ops == NULL) {
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| 286 | fail("error while opening font file %s: %s", font, SDL_GetError());
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| 287 | }
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| 288 |
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| 289 | fon = TTF_OpenFontRW(ops, 1, 32);
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| 290 |
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| 291 | if (fon == NULL) {
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| 292 | fail("error while loading font file %s: %s", font, TTF_GetError());
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| 293 | }
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| 294 |
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| 295 | fon_h = TTF_FontLineSkip(fon);
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| 296 |
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| 297 | if (TTF_GlyphMetrics(fon, 'X', NULL, NULL, NULL, NULL, &fon_w) < 0) {
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| 298 | fail("error while measuring font width: %s", TTF_GetError());
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| 299 | }
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| 300 |
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| 301 | sur_w = CON_W * fon_w;
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| 302 | sur_h = CON_H * fon_h;
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| 303 |
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| 304 | sur = SDL_CreateRGBSurface(0, sur_w, sur_h, 32, 0, 0, 0, 0);
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| 305 |
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| 306 | if (sur == NULL) {
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| 307 | fail("SDL_CreateRGBSurface() failed: %s", SDL_GetError());
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| 308 | }
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| 309 |
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| 310 | for (int32_t y = 0; y < CON_H; ++y) {
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| 311 | for (int32_t x = 0; x < CON_W; ++x) {
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| 312 | mem[y][x] = ' ';
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| 313 | }
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| 314 |
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| 315 | mem[y][CON_W] = 0;
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| 316 | }
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| 317 |
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[a06aa8b] | 318 | }
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| 319 |
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| 320 | void lcd_quit(void)
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| 321 | {
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| 322 | ver("lcd quit");
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[7ba68aa] | 323 |
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| 324 | SDL_FreeSurface(sur);
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| 325 | TTF_CloseFont(fon);
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| 326 |
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| 327 | SDL_DestroyRenderer(ren);
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| 328 | SDL_DestroyWindow(win);
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[a06aa8b] | 329 | }
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| 330 |
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[3c30832] | 331 | bool lcd_exec(void)
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[a06aa8b] | 332 | {
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[4c71d39] | 333 | ver3("lcd exec");
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[3c30832] | 334 | return false;
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[a06aa8b] | 335 | }
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| 336 |
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| 337 | uint32_t lcd_read(uint32_t off, int32_t sz)
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| 338 | {
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[4c71d39] | 339 | ver2("lcd rd %u:%d", off, sz * 8);
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[7ba68aa] | 340 |
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| 341 | uint32_t rv;
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| 342 |
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| 343 | switch (current_op) {
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| 344 | case G_MREAD:
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| 345 | printf("current op: %d\n", current_op);
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| 346 | rv = mem[cur_y][cur_x];
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| 347 | break;
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| 348 | default:
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| 349 | rv = 0x00;
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| 350 | break;
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| 351 | }
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| 352 | return rv;
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[a06aa8b] | 353 | }
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| 354 |
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| 355 | void lcd_write(uint32_t off, int32_t sz, uint32_t val)
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| 356 | {
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[4c71d39] | 357 | ver2("lcd wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
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[7ba68aa] | 358 |
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| 359 | if (off == 0) {
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| 360 | switch (current_op) {
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| 361 | case G_MWRITE:
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| 362 | echo((uint8_t)val);
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| 363 | break;
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| 364 | case G_CRSWR:
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| 365 | if (cur_ad_c == 0) {
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| 366 | cur_ad = val;
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| 367 | cur_ad_c++;
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| 368 | } else if (cur_ad_c == 1) {
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| 369 | cur_ad = cur_ad | (val << 8);
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| 370 | mvcur(cur_ad);
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| 371 | cur_ad_c = 0;
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| 372 | }
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| 373 | break;
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| 374 | default:
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| 375 | break;
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| 376 | }
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| 377 | }
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| 378 | else {
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| 379 | switch (val) {
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| 380 | case G_MWRITE:
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| 381 | current_op = G_MWRITE;
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| 382 | break;
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| 383 | case G_CRSMRT:
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| 384 | forw();
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| 385 | break;
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| 386 | case G_CRSWR:
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| 387 | current_op = G_CRSWR;
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| 388 | break;
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| 389 | case G_MREAD:
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| 390 | current_op = G_MREAD;
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| 391 | break;
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| 392 | default:
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| 393 | current_op = 0x00;
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| 394 | break;
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| 395 | }
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| 396 | }
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[a06aa8b] | 397 | }
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