[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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[18e37d6] | 24 | int32_t lcd_verbose = 0;
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| 25 |
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[c8a92ef] | 26 | #define WIN_W (510 * 2)
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| 27 | #define WIN_H (64 * 2)
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[7ba68aa] | 28 |
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| 29 | #define CON_BGR 0x00000000
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[c8a92ef] | 30 | #define CON_DRW 0xFFFFFFFF
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[7ba68aa] | 31 | #define CON_FGR ((SDL_Color){ .r = 255, .b = 255, .g = 255, .a = 255 })
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| 32 |
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[18e37d6] | 33 | #define REG_ARG 0
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| 34 | #define REG_COM 1
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| 35 |
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| 36 | #define G_NONE 0x00
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[7ba68aa] | 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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[43ea417] | 49 | #define G_DSPOFF 0x58
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| 50 | #define G_DSPON 0x59
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[7ba68aa] | 51 | #define G_HSCRL 0x5A
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| 52 | #define G_OVRLAY 0x5B
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| 53 | #define G_CGRAM 0x5C
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| 54 | #define G_CRSFRM 0x5D
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| 55 |
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[c8a92ef] | 56 | #define TXT_W 85
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| 57 | #define TXT_H 8
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| 58 |
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| 59 | #define GFX_W 85
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| 60 | #define GFX_H 64
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| 61 |
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| 62 | #define BASE_TXT 0x0000
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| 63 | #define BASE_GFX 0x2000
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| 64 |
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[18e37d6] | 65 | #define DIR_UP -85
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| 66 | #define DIR_DOWN 85
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| 67 | #define DIR_RIGHT 1
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| 68 |
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[c8a92ef] | 69 | static uint8_t mem_txt[TXT_H * TXT_W];
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| 70 | static uint8_t mem_gfx[GFX_H * GFX_W];
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[7ba68aa] | 71 |
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| 72 | static SDL_Window *win;
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| 73 | static SDL_Renderer *ren;
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| 74 | static SDL_atomic_t frame;
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[18e37d6] | 75 | static SDL_atomic_t ena;
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[43ea417] | 76 |
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[7ba68aa] | 77 | static TTF_Font *fon;
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| 78 | static int32_t fon_w, fon_h;
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| 79 |
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| 80 | static int32_t sur_w, sur_h;
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| 81 | static SDL_Surface *sur;
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[c8a92ef] | 82 | static SDL_Surface *gfx_sur;
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| 83 |
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[18e37d6] | 84 | static int32_t com;
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| 85 | static int32_t n_arg;
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| 86 | static int32_t cur = BASE_TXT;
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| 87 | static int32_t dir = DIR_RIGHT;
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[a06aa8b] | 88 |
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[c8a92ef] | 89 | void lcd_sdl(void)
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[7ba68aa] | 90 | {
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[c8a92ef] | 91 | ver3("lcd_sdl()");
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[7ba68aa] | 92 |
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| 93 | static int32_t last = 0;
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| 94 | int32_t now = SDL_AtomicGet(&frame);
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| 95 |
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| 96 | if (last == now) {
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| 97 | ver3("no update");
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| 98 | return;
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| 99 | }
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| 100 |
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| 101 | last = now;
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| 102 |
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[c8a92ef] | 103 | if (SDL_FillRect(sur, NULL, CON_BGR) < 0) {
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[7ba68aa] | 104 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 105 | }
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| 106 |
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[18e37d6] | 107 | if (SDL_AtomicGet(&ena) == 0) {
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| 108 | return;
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| 109 | }
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| 110 |
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[c8a92ef] | 111 | for (int32_t y = 0; y < TXT_H; ++y) {
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| 112 | char line[TXT_W + 1];
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[7ba68aa] | 113 |
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| 114 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 115 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 116 | }
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| 117 |
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[18e37d6] | 118 | for (int32_t x = 0; x < TXT_W; ++x) {
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| 119 | uint8_t c = mem_txt[y * TXT_W + x];
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| 120 | line[x] = (char)(c == 0x00 ? ' ' : c);
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| 121 | }
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| 122 |
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[c8a92ef] | 123 | line[TXT_W] = 0;
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[7ba68aa] | 124 |
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| 125 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 126 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 127 | }
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| 128 |
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| 129 | SDL_Surface *lin = TTF_RenderText_Blended(fon, line, CON_FGR);
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| 130 |
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| 131 | if (lin == NULL) {
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| 132 | fail("TTF_RenderText_Blended() failed: %s", TTF_GetError());
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| 133 | }
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| 134 |
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| 135 | if (SDL_BlitSurface(lin, NULL, sur, &(SDL_Rect){
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| 136 | .x = 0,
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| 137 | .y = y * fon_h,
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[c8a92ef] | 138 | .w = TXT_W * fon_w,
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[7ba68aa] | 139 | .h = fon_h
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| 140 | })) {
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| 141 | fail("SDL_BlitSurface() failed: %s", SDL_GetError());
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| 142 | }
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| 143 |
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| 144 | SDL_FreeSurface(lin);
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| 145 | }
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| 146 |
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| 147 | SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, sur);
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| 148 |
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| 149 | if (tex == NULL) {
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| 150 | fail("SDL_CreateTextureFromSurface() failed: %s", SDL_GetError());
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| 151 | }
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| 152 |
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| 153 | if (SDL_RenderCopy(ren, tex, NULL, NULL) < 0) {
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| 154 | fail("SDL_RenderCopy() failed: %s", SDL_GetError());
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| 155 | }
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| 156 |
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[c8a92ef] | 157 | for (int32_t y = 0; y < GFX_H * GFX_W; ++y) {
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| 158 | for (int32_t p = 7; p > 1; --p) {
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| 159 | uint32_t col = CON_BGR;
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| 160 | if ((mem_gfx[y] & (1 << p)) > 0) {
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| 161 | col = CON_DRW;
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| 162 | }
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| 163 |
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| 164 | if (SDL_FillRect(gfx_sur, &(SDL_Rect){
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| 165 | .x = y % 85 * fon_w + (8 - p) * fon_w / 6,
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| 166 | .y = y / 85 * fon_h / 8,
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| 167 | .w = fon_w / 6 + 1,
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| 168 | .h = fon_h / 8 + 1
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| 169 | }, col) < 0) {
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| 170 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 171 | }
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| 172 | }
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| 173 | }
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| 174 |
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| 175 | SDL_Texture *gfx_tex = SDL_CreateTextureFromSurface(ren, gfx_sur);
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| 176 |
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| 177 | if (gfx_tex == NULL) {
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| 178 | fail("SDL_CreateTextureFromSurface() failed: %s", SDL_GetError());
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| 179 | }
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| 180 |
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| 181 | if (SDL_SetTextureBlendMode(gfx_tex, SDL_BLENDMODE_ADD) < 0) {
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| 182 | fail("SDL_SetTextureBlendMode() failed: %s", SDL_GetError());
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| 183 | }
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| 184 |
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| 185 | if (SDL_RenderCopy(ren, gfx_tex, NULL, NULL) < 0) {
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| 186 | fail("SDL_RenderCopy() failed: %s", SDL_GetError());
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| 187 | }
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| 188 |
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[7ba68aa] | 189 | SDL_DestroyTexture(tex);
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[c8a92ef] | 190 | SDL_DestroyTexture(gfx_tex);
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[7ba68aa] | 191 | SDL_RenderPresent(ren);
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| 192 | }
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| 193 |
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[a06aa8b] | 194 | void lcd_init(void)
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| 195 | {
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| 196 | ver("lcd init");
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[7ba68aa] | 197 |
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| 198 | win = SDL_CreateWindow("Front LCD", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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| 199 | WIN_W, WIN_H, 0);
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| 200 |
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| 201 | if (win == NULL) {
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| 202 | fail("SDL_CreateWindow() failed: %s", SDL_GetError());
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| 203 | }
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| 204 |
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| 205 | ren = SDL_CreateRenderer(win, -1, 0);
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| 206 |
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| 207 | if (ren == NULL) {
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| 208 | fail("SDL_CreateRenderer() failed: %s", SDL_GetError());
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| 209 | }
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| 210 |
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| 211 | SDL_AtomicSet(&frame, 1);
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[18e37d6] | 212 | SDL_AtomicSet(&ena, 0);
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[7ba68aa] | 213 |
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| 214 | SDL_RWops *ops = SDL_RWFromFile(font, "rb");
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| 215 |
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| 216 | if (ops == NULL) {
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| 217 | fail("error while opening font file %s: %s", font, SDL_GetError());
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| 218 | }
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| 219 |
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| 220 | fon = TTF_OpenFontRW(ops, 1, 32);
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| 221 |
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| 222 | if (fon == NULL) {
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| 223 | fail("error while loading font file %s: %s", font, TTF_GetError());
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| 224 | }
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| 225 |
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| 226 | fon_h = TTF_FontLineSkip(fon);
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| 227 |
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| 228 | if (TTF_GlyphMetrics(fon, 'X', NULL, NULL, NULL, NULL, &fon_w) < 0) {
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| 229 | fail("error while measuring font width: %s", TTF_GetError());
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| 230 | }
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| 231 |
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[c8a92ef] | 232 | sur_w = TXT_W * fon_w;
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| 233 | sur_h = TXT_H * fon_h;
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[7ba68aa] | 234 |
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| 235 | sur = SDL_CreateRGBSurface(0, sur_w, sur_h, 32, 0, 0, 0, 0);
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| 236 |
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| 237 | if (sur == NULL) {
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| 238 | fail("SDL_CreateRGBSurface() failed: %s", SDL_GetError());
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| 239 | }
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| 240 |
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[c8a92ef] | 241 | gfx_sur = SDL_CreateRGBSurface(0, sur_w, sur_h, 32, 0, 0, 0, 0);
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[7ba68aa] | 242 |
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[c8a92ef] | 243 | if (gfx_sur == NULL) {
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| 244 | fail("SDL_CreateRGBSurface() failed: %s", SDL_GetError());
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| 245 | }
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| 246 |
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| 247 | for (int32_t y = 0; y < TXT_W * TXT_H; ++y) {
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| 248 | mem_txt[y] = ' ';
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| 249 | }
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[a06aa8b] | 250 | }
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| 251 |
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| 252 | void lcd_quit(void)
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| 253 | {
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| 254 | ver("lcd quit");
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[7ba68aa] | 255 |
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| 256 | SDL_FreeSurface(sur);
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[c8a92ef] | 257 | SDL_FreeSurface(gfx_sur);
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[7ba68aa] | 258 | TTF_CloseFont(fon);
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| 259 |
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| 260 | SDL_DestroyRenderer(ren);
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| 261 | SDL_DestroyWindow(win);
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[a06aa8b] | 262 | }
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| 263 |
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[3c30832] | 264 | bool lcd_exec(void)
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[a06aa8b] | 265 | {
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[4c71d39] | 266 | ver3("lcd exec");
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[3c30832] | 267 | return false;
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[a06aa8b] | 268 | }
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| 269 |
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| 270 | uint32_t lcd_read(uint32_t off, int32_t sz)
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| 271 | {
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[4c71d39] | 272 | ver2("lcd rd %u:%d", off, sz * 8);
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[7ba68aa] | 273 |
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[18e37d6] | 274 | if (sz != 1 || off > 0) {
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| 275 | fail("invalid lcd rd %u:%d", off, sz * 8);
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| 276 | }
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[7ba68aa] | 277 |
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[18e37d6] | 278 | switch (com) {
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| 279 | case G_MREAD:
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| 280 | if (cur >= BASE_TXT && cur < BASE_TXT + TXT_W * TXT_H) {
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| 281 | return mem_txt[cur - BASE_TXT];
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| 282 | }
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| 283 |
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| 284 | if (cur >= BASE_GFX && cur < BASE_GFX + GFX_W * GFX_H) {
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| 285 | return mem_gfx[cur - BASE_GFX];
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| 286 | }
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| 287 |
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| 288 | return 0x00;
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[43ea417] | 289 |
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[18e37d6] | 290 | default:
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| 291 | return 0x00;
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[7ba68aa] | 292 | }
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[a06aa8b] | 293 | }
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| 294 |
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[18e37d6] | 295 | static void proc_arg(int32_t val)
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[a06aa8b] | 296 | {
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[18e37d6] | 297 | switch (com) {
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| 298 | case G_MWRITE:
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| 299 | if (cur >= BASE_TXT && cur < BASE_TXT + TXT_W * TXT_H) {
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| 300 | mem_txt[cur - BASE_TXT] = (uint8_t)val;
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[43ea417] | 301 | }
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[18e37d6] | 302 | else if (cur >= BASE_GFX && cur < BASE_GFX + GFX_W * GFX_H) {
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| 303 | mem_gfx[cur - BASE_GFX] = (uint8_t)val;
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[43ea417] | 304 | }
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| 305 |
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[18e37d6] | 306 | cur += dir;
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| 307 | SDL_AtomicAdd(&frame, 1);
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| 308 | break;
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| 309 |
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| 310 | case G_CRSWR:
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| 311 | if (n_arg == 0) {
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| 312 | cur = val;
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| 313 | }
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| 314 | else if (n_arg == 1) {
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| 315 | cur |= val << 8;
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| 316 |
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| 317 | if (cur < BASE_TXT ||
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| 318 | (cur >= BASE_TXT + TXT_W * TXT_H && cur < BASE_GFX) ||
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| 319 | cur >= BASE_GFX + GFX_W * GFX_H) {
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| 320 | fail("invalid address 0x%04x", cur);
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| 321 | }
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| 322 | }
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| 323 |
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| 324 | break;
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| 325 |
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| 326 | default:
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| 327 | break;
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[43ea417] | 328 | }
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[18e37d6] | 329 | }
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| 330 |
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| 331 | static void proc_com(int32_t val)
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| 332 | {
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| 333 | switch (val) {
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| 334 | case G_CRSWR:
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| 335 | case G_MREAD:
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| 336 | case G_MWRITE:
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| 337 | com = val;
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| 338 | break;
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| 339 |
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| 340 | case G_CRSMRT:
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| 341 | dir = DIR_RIGHT;
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| 342 | com = G_NONE;
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| 343 | break;
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| 344 |
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| 345 | case G_CRSMUP:
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| 346 | dir = DIR_UP;
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| 347 | com = G_NONE;
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| 348 | break;
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| 349 |
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| 350 | case G_CRSMDN:
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| 351 | dir = DIR_DOWN;
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| 352 | com = G_NONE;
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| 353 | break;
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| 354 |
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| 355 | case G_DSPOFF:
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| 356 | SDL_AtomicSet(&ena, 0);
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| 357 | com = G_NONE;
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| 358 | break;
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| 359 |
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| 360 | case G_DSPON:
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| 361 | SDL_AtomicSet(&ena, 1);
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| 362 | com = G_NONE;
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| 363 | break;
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| 364 |
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| 365 | default:
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| 366 | com = G_NONE;
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| 367 | break;
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[43ea417] | 368 | }
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[18e37d6] | 369 | }
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[43ea417] | 370 |
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[18e37d6] | 371 | void lcd_write(uint32_t off, int32_t sz, uint32_t val)
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| 372 | {
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| 373 | ver2("lcd wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
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| 374 |
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| 375 | if (sz != 1 || off > 1) {
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| 376 | fail("invalid lcd wr %u:%d", off, sz * 8);
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[7ba68aa] | 377 | }
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[18e37d6] | 378 |
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| 379 | switch (off) {
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| 380 | case REG_ARG:
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| 381 | proc_arg((int32_t)val);
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| 382 | ++n_arg;
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| 383 | break;
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| 384 |
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| 385 | case REG_COM:
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| 386 | proc_com((int32_t)val);
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| 387 | n_arg = 0;
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| 388 | break;
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| 389 |
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| 390 | default:
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| 391 | break;
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[7ba68aa] | 392 | }
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[a06aa8b] | 393 | }
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