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/* $Id: main.c 42 2024-09-02 04:07:45Z nishi $ */
#include <stdio.h>
#include <stdbool.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
#include <raylib.h>
#include "shiroi.h"
#define ON_COLOR ((Color){0xc0, 0, 0, 0xff})
#define OFF_COLOR ((Color){0x20, 0x20, 0x20, 0xff})
shiroi_t shiroi;
void thread_start(void);
void thread_end(void);
bool get_bit(int n, int f) { return (n & (1 << f)) ? true : false; }
int main(int argc, char** argv) {
FILE* fconf = fopen("shiroi.ini", "r");
if(fconf == NULL) {
printf("Creating config.\n");
fconf = fopen("shiroi.ini", "w");
if(fconf == NULL) {
fprintf(stderr, "Failed to create config\n");
return 1;
}
fprintf(fconf, "slot1=video_mark_1\n");
fprintf(fconf, "slot2=sound_mark_1\n");
fprintf(fconf, "slot3=math_mark_1\n");
fprintf(fconf, "slot4=text_mark_1\n");
fprintf(fconf, "rom=shiroi.rom\n");
fclose(fconf);
}
shiroi_init_cards(&shiroi);
fconf = fopen("shiroi.ini", "r");
struct stat s;
stat("shiroi.ini", &s);
char* ini = malloc(s.st_size + 1);
fread(ini, s.st_size, 1, fconf);
ini[s.st_size] = 0;
fclose(fconf);
int incr = 0;
int i;
for(i = 0;; i++) {
if(ini[i] == 0 || ini[i] == '\n') {
char oldc = ini[i];
ini[i] = 0;
char* line = ini + incr;
if(strlen(line) != 0 && line[0] != '#') {
int j;
for(j = 0; line[j] != 0; j++) {
if(line[j] == '=') {
line[j] = 0;
if(strcmp(line, "rom") == 0) {
printf("ROM: %s\n", line + j + 1);
if(stat(line + j + 1, &s) != 0) {
fprintf(stderr, "ROM not found\n");
free(ini);
return 1;
}
printf("ROM size: %d\n", s.st_size);
FILE* f = fopen(line + j + 1, "rb");
fread(shiroi.ram, s.st_size, 1, f);
fclose(f);
} else if(strcmp(line, "romcard") == 0) {
printf("ROMcard: %s\n", line + j + 1);
if(stat(line + j + 1, &s) != 0) {
fprintf(stderr, "ROM not found\n");
free(ini);
return 1;
}
printf("ROMcard size: %d\n", s.st_size);
shiroi_card_t* card = shiroi_get_romcard_card(&shiroi);
if(card != NULL) {
FILE* f = fopen(line + j + 1, "rb");
fread(card->romcard.data, s.st_size, 1, f);
fclose(f);
} else {
fprintf(stderr, "ROMcard is not installed ; ignored\n");
}
} else if(line[0] == 's' && line[1] == 'l' && line[2] == 'o' && line[3] == 't') {
int slot = atoi(line + 4);
const char* n = "";
int dev = -1;
if(strcmp(line + j + 1, "video_mark_1") == 0) {
dev = SHIROI_VIDEO_MARK_I;
n = "Video Mark I";
} else if(strcmp(line + j + 1, "video_mark_2") == 0) {
dev = SHIROI_VIDEO_MARK_II;
n = "Video Mark II";
} else if(strcmp(line + j + 1, "sound_mark_1") == 0) {
dev = SHIROI_SOUND_MARK_I;
n = "Sound Mark I";
} else if(strcmp(line + j + 1, "math_mark_1") == 0) {
dev = SHIROI_MATH_MARK_I;
n = "Math Mark I";
} else if(strcmp(line + j + 1, "text_mark_1") == 0) {
dev = SHIROI_TEXT_MARK_I;
n = "Text Mark I";
} else if(strcmp(line + j + 1, "debug") == 0) {
dev = SHIROI_DEBUG;
n = "Debug";
} else if(strcmp(line + j + 1, "romcard_mark_1") == 0) {
dev = SHIROI_ROMCARD_MARK_I;
n = "ROMcard Mark I";
}
if(dev == -1) {
fprintf(stderr, "No such device called `%s' ; ignoring\n", line + j + 1);
} else {
shiroi_install(&shiroi, slot, dev);
printf("Installed `%s' into slot %d\n", n, slot);
}
}
break;
}
}
}
incr = i + 1;
if(oldc == 0) break;
}
}
free(ini);
shiroi_init(&shiroi);
double scx = 2;
double scy = 2;
shiroi_card_t* videocard = shiroi_get_video_card(&shiroi);
shiroi_video_t* video = NULL;
if(videocard != NULL) {
video = videocard->videoptr;
}
shiroi_card_t* textcard = shiroi_get_text_card(&shiroi);
shiroi_text_t* text = NULL;
if(textcard != NULL) {
text = textcard->textptr;
}
shiroi_card_t* debugcard = shiroi_get_debug_card(&shiroi);
shiroi_debug_t* debug = NULL;
if(debugcard != NULL) {
debug = debugcard->debugptr;
}
SetTraceLogLevel(LOG_NONE);
if(video != NULL) {
InitWindow(video->width * scx + ((debug == NULL && text == NULL) ? 0 : 200), video->height * scy, "Shiroi Emulator");
} else {
InitWindow(640 + ((debug == NULL && text == NULL) ? 0 : 200), 480, "Shiroi Emulator");
}
SetExitKey(KEY_NULL);
InitAudioDevice();
SetAudioStreamBufferSizeDefault(512);
AudioStream as = LoadAudioStream(48000, 16, 1);
SetAudioStreamCallback(as, shiroi.play_audio);
SetTargetFPS(60);
uint32_t* fb = NULL;
if(video != NULL) {
fb = malloc(sizeof(*fb) * video->width * video->height);
int x, y;
for(y = 0; y < video->height; y++) {
for(x = 0; x < video->width; x++) {
fb[y * video->width + x] = 0xffffff;
}
}
}
RenderTexture r;
if(video != NULL) {
r = LoadRenderTexture(video->width, video->height);
BeginTextureMode(r);
ClearBackground(BLACK);
EndTextureMode();
}
PlayAudioStream(as);
thread_start();
while(!WindowShouldClose()) {
BeginDrawing();
ClearBackground(BLACK);
if(text != NULL) {
/*
* / 1 2 3 4 5 6 7 8 9 10 11 12 13
* 1 1 2 3 4 5 6 7 8 9 0 - = bs
* 2 q w e r t y u i o p [ ] rt
* 3 a s d f g h j k l ; ' \ cl
* 4 z x c v b n m , . / sp bk
*/
int c = GetKeyPressed();
if(KEY_ONE <= c && c <= KEY_NINE) {
text->key = (1 << 4) | (c - KEY_ONE + 1);
} else if(c == KEY_ZERO) {
text->key = (1 << 4) | 10;
} else if(c == KEY_MINUS) {
text->key = (1 << 4) | 11;
} else if(c == KEY_EQUAL) {
text->key = (1 << 4) | 12;
} else if(c == KEY_BACKSPACE) {
text->key = (1 << 4) | 13;
} else if(c == KEY_LEFT_BRACKET) {
text->key = (2 << 4) | 11;
} else if(c == KEY_RIGHT_BRACKET) {
text->key = (2 << 4) | 12;
} else if(c == KEY_ENTER) {
text->key = (2 << 4) | 13;
} else if(c == KEY_SEMICOLON) {
text->key = (3 << 4) | 10;
} else if(c == KEY_APOSTROPHE) {
text->key = (3 << 4) | 11;
} else if(c == KEY_BACKSLASH) {
text->key = (3 << 4) | 12;
} else if(c == KEY_LEFT_SHIFT || c == KEY_RIGHT_SHIFT) {
text->key = (3 << 4) | 13;
text->caps = !text->caps;
} else if(c == KEY_F1) {
if(shiroi.stop) {
shiroi.stop = false;
shiroi.reset = true;
thread_start();
} else {
shiroi.reset = true;
shiroi.stop = true;
thread_end();
}
} else if(c == KEY_F2) {
shiroi.reset = true;
} else if(c == KEY_COMMA) {
text->key = (4 << 4) | 8;
} else if(c == KEY_PERIOD) {
text->key = (4 << 4) | 9;
} else if(c == KEY_SLASH) {
text->key = (4 << 4) | 10;
} else if(c == KEY_SPACE) {
text->key = (4 << 4) | 11;
} else if((IsKeyDown(KEY_LEFT_CONTROL) || IsKeyDown(KEY_RIGHT_CONTROL)) && c == KEY_PAUSE) {
text->key = (4 << 4) | 12;
} else if(c == KEY_Q) {
text->key = (2 << 4) | 1;
} else if(c == KEY_W) {
text->key = (2 << 4) | 2;
} else if(c == KEY_E) {
text->key = (2 << 4) | 3;
} else if(c == KEY_R) {
text->key = (2 << 4) | 4;
} else if(c == KEY_T) {
text->key = (2 << 4) | 5;
} else if(c == KEY_Y) {
text->key = (2 << 4) | 6;
} else if(c == KEY_U) {
text->key = (2 << 4) | 7;
} else if(c == KEY_I) {
text->key = (2 << 4) | 8;
} else if(c == KEY_O) {
text->key = (2 << 4) | 9;
} else if(c == KEY_P) {
text->key = (2 << 4) | 10;
} else if(c == KEY_A) {
text->key = (3 << 4) | 1;
} else if(c == KEY_S) {
text->key = (3 << 4) | 2;
} else if(c == KEY_D) {
text->key = (3 << 4) | 3;
} else if(c == KEY_F) {
text->key = (3 << 4) | 4;
} else if(c == KEY_G) {
text->key = (3 << 4) | 5;
} else if(c == KEY_H) {
text->key = (3 << 4) | 6;
} else if(c == KEY_J) {
text->key = (3 << 4) | 7;
} else if(c == KEY_K) {
text->key = (3 << 4) | 8;
} else if(c == KEY_L) {
text->key = (3 << 4) | 9;
} else if(c == KEY_Z) {
text->key = (4 << 4) | 1;
} else if(c == KEY_X) {
text->key = (4 << 4) | 2;
} else if(c == KEY_C) {
text->key = (4 << 4) | 3;
} else if(c == KEY_V) {
text->key = (4 << 4) | 4;
} else if(c == KEY_B) {
text->key = (4 << 4) | 5;
} else if(c == KEY_N) {
text->key = (4 << 4) | 6;
} else if(c == KEY_M) {
text->key = (4 << 4) | 7;
}
}
if(video != NULL) {
BeginTextureMode(r);
int y, x;
for(y = 0; y < video->height; y++) {
for(x = 0; x < video->width; x++) {
if(video->fb[y * video->width + x] != fb[y * video->width + x]) {
uint32_t c = video->fb[y * video->width + x];
DrawPixel(x, y, (Color){(c >> 24) & 0xff, (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff});
fb[y * video->width + x] = c;
}
}
}
EndTextureMode();
DrawTexturePro(r.texture, (Rectangle){0, 0, video->width, -video->height}, (Rectangle){(text == NULL && debug == NULL) ? 0 : 200, 0, GetScreenWidth() - ((text == NULL && debug == NULL) ? 0 : 200), GetScreenHeight()}, (Vector2){0, 0}, 0, WHITE);
} else {
DrawText("No Video", 200 + 5, 5, 20, WHITE);
}
if(text != NULL) {
DrawText("Caps Lock", 5, 5, 10, WHITE);
DrawCircle(200 - 10, 10, 5, text->caps ? ON_COLOR : OFF_COLOR);
}
if(debug != NULL) {
DrawText("Debug", 5, 5 + 10 + 5, 10, WHITE);
for(i = 0; i < 4; i++) {
int shx = i * (5 + 20 + 5 + 5 + 10);
DrawRectangle(shx + 10, 5 + 5 + 10 + 5 + 10 + 5, 20, 5, get_bit(debug->latch[i], 0) ? ON_COLOR : OFF_COLOR);
DrawRectangle(shx + 5, 5 + 5 + 10 + 5 + 10 + 10, 5, 20, get_bit(debug->latch[i], 1) ? ON_COLOR : OFF_COLOR);
DrawRectangle(shx + 5 + 20 + 5, 5 + 5 + 10 + 5 + 10 + 10, 5, 20, get_bit(debug->latch[i], 2) ? ON_COLOR : OFF_COLOR);
DrawRectangle(shx + 10, 5 + 5 + 10 + 5 + 10 + 5 + 20 + 5, 20, 5, get_bit(debug->latch[i], 3) ? ON_COLOR : OFF_COLOR);
DrawRectangle(shx + 5, 5 + 5 + 10 + 5 + 10 + 10 + 5 + 20, 5, 20, get_bit(debug->latch[i], 4) ? ON_COLOR : OFF_COLOR);
DrawRectangle(shx + 5 + 20 + 5, 5 + 5 + 10 + 5 + 10 + 10 + 5 + 20, 5, 20, get_bit(debug->latch[i], 5) ? ON_COLOR : OFF_COLOR);
DrawRectangle(shx + 10, 5 + 5 + 10 + 5 + 10 + 5 + 20 + 5 + 20 + 5, 20, 5, get_bit(debug->latch[i], 6) ? ON_COLOR : OFF_COLOR);
DrawRectangle(shx + 5 + 5 + 20 + 5 + 5, 5 + 5 + 10 + 5 + 10 + 5 + 20 + 5 + 20 + 5, 5, 5, get_bit(debug->latch[i], 7) ? ON_COLOR : OFF_COLOR);
}
}
EndDrawing();
}
if(video != NULL) UnloadRenderTexture(r);
CloseWindow();
UnloadAudioStream(as);
shiroi.stop = true;
thread_end();
}