Basic dithering, file refactor

2026-10-15 07:31:22 +00:00 · 2016-03-08 12:32:16 +11:00
parent 8d55289214
commit 9000ad029c
15 changed files with 698 additions and 383 deletions
@@ -0,0 +1,103 @@
+#include "imagecon.h"
+
+void palette_loadFile(imagecon_image_t* ic)
+{
+  FILE* fp = file_openRead(config.overridePalette);
+  int paletteIndex;
+  
+  for (paletteIndex = 0; paletteIndex < MAX_PALETTE; paletteIndex++) {
+    unsigned int c;
+    char buffer[255];
+    char* line = fgets(buffer, 255, fp);
+    if (!line) {
+      break;
+    }
+    sscanf(buffer, "%x\n", &c);
+    
+    ic->palette[paletteIndex].r = (c >> 8 & 0xF) << 4;
+    ic->palette[paletteIndex].g = (c >> 4 & 0xF) << 4;
+    ic->palette[paletteIndex].b = (c >> 0 & 0xF) << 4;
+    ic->palette[paletteIndex].a = 255;
+  }
+
+  ic->numColors = paletteIndex;
+}
+
+
+void 
+palette_output(char* outFilename, imagecon_image_t* ic)
+{
+  if (config.verbose) {
+    printf("outputPalette...%d colors\n", ic->numColors);
+  }
+
+  FILE* fp = 0;
+  FILE* paletteFP = 0;
+  FILE* paletteAsmFP = 0;
+  FILE* paletteGreyFP = 0;
+
+  if (config.outputCopperList) {
+    fp = file_openWrite("%s-copper-list.s", outFilename);
+  }
+
+  if (config.outputPalette) {
+    paletteFP = file_openWrite("%s.pal", outFilename);
+  }
+
+  if (config.outputPaletteGrey) {
+    paletteGreyFP = file_openWrite("%s-grey.s", outFilename);
+    fprintf(paletteGreyFP, "\tmovem.l d0-a6,-(sp)\n\tlea CUSTOM,a6\n");
+  }
+
+  if (config.outputPaletteAsm) {
+    paletteAsmFP = file_openWrite("%s-palette.s", outFilename);
+    fprintf(paletteAsmFP, "\tmovem.l d0-a6,-(sp)\n\tlea CUSTOM,a6\n");
+  }
+
+  if (config.verbose) {
+    printf("outputPalette:\n");
+  }
+  
+  for (int i = 0; i < (config.ehbMode ? ic->numColors/2 : ic->numColors); i++) {
+    if (config.verbose) {
+      printf("%02d: hex=%03x r=%03d g=%03d b=%03d a=%03d\n", i , ic->palette[i].r << 8 | ic->palette[i].g << 4 | ic->palette[i].b, ic->palette[i].r, ic->palette[i].g, ic->palette[i].b, ic->palette[i].a);
+    }
+    if (paletteFP) {
+      fprintf(paletteFP, "%03x\n",  (ic->palette[i].r >> 4) << 8 | (ic->palette[i].g >>4) << 4 | (ic->palette[i].b >>4));
+    }
+    if (paletteAsmFP) {
+      fprintf(paletteAsmFP, "\tlea COLOR%02d(a6),a0\n\tmove.w #$%03x,(a0)\n", i, (ic->palette[i].r >> 4) << 8 | (ic->palette[i].g >>4) << 4 | (ic->palette[i].b >>4));
+    }
+    if (paletteGreyFP) {
+      // TODO: this is for compat, can be better
+      unsigned grey = (((ic->palette[i].r>>4) + (ic->palette[i].g>>4) + (ic->palette[i].b>>4))/3);
+      fprintf(paletteGreyFP, "\tlea COLOR%02d(a6),a0\n\tmove.w #$%03x,(a0)\n", i, grey << 8 | grey << 4 | grey);
+    }
+
+    if (fp) {
+      fprintf(fp, "\tdc.w $%x,$%x\n", 0x180+(i*2), (ic->palette[i].r >> 4) << 8 | (ic->palette[i].g >>4) << 4 | (ic->palette[i].b >>4));
+    }
+  }
+
+  if (paletteFP) {
+    fclose(paletteFP);
+  }
+
+  if (paletteGreyFP) {
+    fprintf(paletteGreyFP, "\tmovem.l (sp)+,d0-a6\n");
+    fclose(paletteGreyFP);
+  }
+
+  if (paletteAsmFP) {
+    fprintf(paletteAsmFP, "\tmovem.l (sp)+,d0-a6\n");
+    fclose(paletteFP);
+  }
+
+  if (fp) {
+    fclose(fp);
+  }
+
+  if (config.verbose) {
+    printf("done\n\n");
+  }
+}