Changeset 7ba68aa in buchla-emu for emu

Timestamp:

08/25/2017 07:04:14 PM (7 years ago)

Author:

Alexander Heinrich <alex.heinrich@…>

Branches:

master

Children:

43ea417

Parents:

657abdf

Message:

Basic text output for lcd

Basic text output for lcd, graphics drawing still needs to be done.

Location:

emu

Files:

• all.h (modified) (1 diff)
• lcd.c (modified) (4 diffs)
• sdl.c (modified) (1 diff)

emu/all.h

@@ -111 +111 @@
 extern void lcd_write(uint32_t off, int32_t sz, uint32_t val);
 
+extern void lcd_sdl(void);
+
 extern void ser_init(void);
 extern void ser_quit(void);

emu/lcd.c

@@ -22 +22 @@
 #define ver3(...) _ver(lcd_verbose, 2, __VA_ARGS__)
 
+#define WIN_W (1520 * 2 / 3)
+#define WIN_H (950 * 2 / 3)
+
+#define CON_W 86
+#define CON_H 25
+
+#define CON_BGR 0x00000000
+#define CON_BEL 0x00808080
+#define CON_CUR 0x00e87000
+#define CON_FGR ((SDL_Color){ .r = 255, .b = 255, .g = 255, .a = 255 })
+
+#define BEL_CYC 10000
+
+#define G_INIT          0x40
+#define G_MWRITE        0x42
+#define G_MREAD         0x43
+#define G_SETSAD        0x44
+#define G_CRSWR         0x46
+#define G_CRSRD         0x47
+#define G_CRSMRT        0x4C
+#define G_CRSMLT        0x4D
+#define G_CRSMUP        0x4E
+#define G_CRSMDN        0x4F
+#define G_ERASE         0x52
+#define G_SLEEP         0x53
+#define G_DSPCTL        0x58
+#define G_HSCRL         0x5A
+#define G_OVRLAY        0x5B
+#define G_CGRAM         0x5C
+#define G_CRSFRM        0x5D
+
+static uint8_t mem[CON_H][CON_W + 1];
+
+static SDL_Window *win;
+static SDL_Renderer *ren;
+static SDL_atomic_t frame;
+
+static TTF_Font *fon;
+static int32_t fon_w, fon_h;
+
+static int32_t sur_w, sur_h;
+static SDL_Surface *sur;
+
+static int32_t cur_x = 0, cur_y = 0;
+static int32_t bel = 0;
+
+static int32_t current_op = 0x00;
+static uint32_t cur_ad = 0;
+static int32_t cur_ad_c = 0;
+
 int32_t lcd_verbose = 0;
 
+static void scroll(void)
+{
+        memmove(mem, mem + 1, (CON_H - 1) * (CON_W + 1));
+        memset(mem + (CON_H - 1), ' ', CON_W);
+}
+
+static void forw(void)
+{
+        if (cur_x < CON_W - 1) {
+                ++cur_x;
+                return;
+        }
+
+        if (cur_y == CON_H - 1) {
+                cur_x = 0;
+                scroll();
+                return;
+        }
+
+        cur_x = 0;
+        ++cur_y;
+}
+
+static void back(void)
+{
+        if (cur_x > 0) {
+                --cur_x;
+                return;
+        }
+
+        if (cur_y == 0) {
+                return;
+        }
+
+        cur_x = CON_W - 1;
+        --cur_y;
+}
+
+static void down(void)
+{
+        if (cur_y < CON_H - 1) {
+                ++cur_y;
+                return;
+        }
+
+        scroll();
+}
+
+static void mvcur(uint32_t cur_addr) {
+        uint32_t n_cur_x = cur_addr % 85;
+        uint32_t n_cur_y = cur_addr / 85;
+
+        printf("Cur x %u\n", n_cur_x);
+        printf("Cur y %u\n", n_cur_y);
+        if (n_cur_x < CON_W - 1) {
+                cur_x = (int32_t) n_cur_x;
+        }
+        else {
+                err("invalid x cursor pos in lcd %u:%d", n_cur_x, CON_W);
+        }
+
+        if (n_cur_y < CON_H - 1) {
+                cur_y = (int32_t) n_cur_y;
+        }
+        else {
+                err("invalid y cursor pos in lcd %u:%d", n_cur_y, CON_H);
+        }
+}
+
+static void echo(uint8_t c)
+{
+        if (c < 32) {
+                switch (c) {
+                case '\r':
+                        cur_x = 0;
+                        break;
+
+                case '\n':
+                        down();
+                        break;
+
+                case '\b':
+                        back();
+                        break;
+
+                case '\a':
+                        bel = BEL_CYC;
+                        break;
+
+                case 0:
+                        mem[cur_y][cur_x] = ' ';
+                        forw();
+                        break;
+
+                case 28:
+                        // TODO
+                        echo('^');
+                        echo((uint8_t)(c + '@'));
+                        break;
+
+                default:
+                        echo('^');
+                        echo((uint8_t)(c + '@'));
+                        ver2("lcd default case echo %u", c);
+                        return;
+                }
+        }
+        else {
+                mem[cur_y][cur_x] = c;
+                forw();
+        }
+
+        SDL_AtomicAdd(&frame, 1);
+}
+
+void lcd_sdl(void)
+{
+        ver3("lcd_sdl()");
+
+        static int32_t last = 0;
+        int32_t now = SDL_AtomicGet(&frame);
+
+        if (last == now) {
+                ver3("no update");
+                return;
+        }
+
+        last = now;
+
+        if (SDL_FillRect(sur, NULL, bel == 0 ? CON_BGR : CON_BEL) < 0) {
+                fail("SDL_FillRect() failed: %s", SDL_GetError());
+        }
+
+        if (SDL_FillRect(sur, &(SDL_Rect){
+                .x = cur_x * fon_w,
+                .y = cur_y * fon_h,
+                .w = fon_w,
+                .h = fon_h
+        }, CON_CUR) < 0) {
+                fail("SDL_FillRect() failed: %s", SDL_GetError());
+        }
+
+        for (int32_t y = 0; y < CON_H; ++y) {
+                char line[CON_W + 1];
+
+                if (SDL_LockMutex(cpu_mutex) < 0) {
+                        fail("SDL_LockMutex() failed: %s", SDL_GetError());
+                }
+
+                memcpy(line, mem[y], CON_W + 1);
+
+                if (SDL_UnlockMutex(cpu_mutex) < 0) {
+                        fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
+                }
+
+                SDL_Surface *lin = TTF_RenderText_Blended(fon, line, CON_FGR);
+
+                if (lin == NULL) {
+                        fail("TTF_RenderText_Blended() failed: %s", TTF_GetError());
+                }
+
+                if (SDL_BlitSurface(lin, NULL, sur, &(SDL_Rect){
+                        .x = 0,
+                        .y = y * fon_h,
+                        .w = CON_W * fon_w,
+                        .h = fon_h
+                })) {
+                        fail("SDL_BlitSurface() failed: %s", SDL_GetError());
+                }
+
+                SDL_FreeSurface(lin);
+        }
+
+        SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, sur);
+
+        if (tex == NULL) {
+                fail("SDL_CreateTextureFromSurface() failed: %s", SDL_GetError());
+        }
+
+        if (SDL_RenderCopy(ren, tex, NULL, NULL) < 0) {
+                fail("SDL_RenderCopy() failed: %s", SDL_GetError());
+        }
+
+        SDL_DestroyTexture(tex);
+        SDL_RenderPresent(ren);
+}
+
+
 void lcd_init(void)
 {
         ver("lcd init");
+
+        win = SDL_CreateWindow("Front LCD", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+                        WIN_W, WIN_H, 0);
+
+        if (win == NULL) {
+                fail("SDL_CreateWindow() failed: %s", SDL_GetError());
+        }
+
+        ren = SDL_CreateRenderer(win, -1, 0);
+
+        if (ren == NULL) {
+                fail("SDL_CreateRenderer() failed: %s", SDL_GetError());
+        }
+
+        SDL_AtomicSet(&frame, 1);
+
+        SDL_RWops *ops = SDL_RWFromFile(font, "rb");
+
+        if (ops == NULL) {
+                fail("error while opening font file %s: %s", font, SDL_GetError());
+        }
+
+        fon = TTF_OpenFontRW(ops, 1, 32);
+
+        if (fon == NULL) {
+                fail("error while loading font file %s: %s", font, TTF_GetError());
+        }
+
+        fon_h = TTF_FontLineSkip(fon);
+
+        if (TTF_GlyphMetrics(fon, 'X', NULL, NULL, NULL, NULL, &fon_w) < 0) {
+                fail("error while measuring font width: %s", TTF_GetError());
+        }
+
+        sur_w = CON_W * fon_w;
+        sur_h = CON_H * fon_h;
+
+        sur = SDL_CreateRGBSurface(0, sur_w, sur_h, 32, 0, 0, 0, 0);
+
+        if (sur == NULL) {
+                fail("SDL_CreateRGBSurface() failed: %s", SDL_GetError());
+        }
+
+        for (int32_t y = 0; y < CON_H; ++y) {
+                for (int32_t x = 0; x < CON_W; ++x) {
+                        mem[y][x] = ' ';
+                }
+
+                mem[y][CON_W] = 0;
+        }
+
 }
 
@@ -32 +321 @@
 {
         ver("lcd quit");
+
+        SDL_FreeSurface(sur);
+        TTF_CloseFont(fon);
+
+        SDL_DestroyRenderer(ren);
+        SDL_DestroyWindow(win);
 }
 
@@ -43 +338 @@
 {
         ver2("lcd rd %u:%d", off, sz * 8);
-        return 0;
+
+        uint32_t rv;
+
+        switch (current_op) {
+                case G_MREAD:
+                        printf("current op: %d\n", current_op);
+                        rv = mem[cur_y][cur_x];
+                        break;
+                default:
+                        rv = 0x00;
+                        break;
+        }
+        return rv;
 }
 
@@ -49 +356 @@
 {
         ver2("lcd wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
-}
+
+        if (off == 0) {
+                switch (current_op) {
+                        case G_MWRITE:
+                                        echo((uint8_t)val);
+                                break;
+                        case G_CRSWR:
+                                if (cur_ad_c == 0) {
+                                        cur_ad = val;
+                                        cur_ad_c++;
+                                } else if (cur_ad_c == 1) {
+                                        cur_ad = cur_ad | (val << 8);
+                                        mvcur(cur_ad);
+                                        cur_ad_c = 0;
+                                }
+                                break;
+                        default:
+                                break;
+                }
+        }
+        else {
+                switch (val) {
+                        case G_MWRITE:
+                                current_op = G_MWRITE;
+                                break;
+                        case G_CRSMRT:
+                                forw();
+                                break;
+                        case G_CRSWR:
+                                current_op = G_CRSWR;
+                                break;
+                        case G_MREAD:
+                                current_op = G_MREAD;
+                                break;
+                        default:
+                                current_op = 0x00;
+                                break;
+                }
+        }
+}

emu/sdl.c

@@ -27 +27 @@
 
 static sdl_func_t sdl_funcs[] = {
-        ser_sdl, vid_sdl
+        lcd_sdl, ser_sdl, vid_sdl
 };