mirror of
https://frontier.innolan.net/github/AmigaExamples.git
synced 2025-12-08 23:04:08 +00:00
563 lines
13 KiB
C
563 lines
13 KiB
C
/*
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* Amiga bitplane creation inspired (copied) from https://github.com/vilcans/amiga-startup
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <math.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <png.h>
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#include <pngquant/libimagequant.h>
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#include "imagecon.h"
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imagecon_config_t config = {
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.maxColors = MAX_PALETTE,
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.outputPalette = 0,
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.outputMask = 0,
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.outputPaletteAsm = 0,
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.outputBitplanes = 0,
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.outputCopperList = 0,
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.quantize = 0,
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.overridePalette = 0
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};
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void
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usage()
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{
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fprintf(stderr,
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"%s: --input <input1.png,input2.png...> [options]\n"\
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"options:\n"\
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" --output <output prefix>\n"\
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" --colors <max colors>\n"\
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" --quantize\n --output-mask\n"\
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" --output-bitplanes\n"\
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" --output-copperlist\n"\
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" --output-mask\n"\
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" --output-palette-asm\n"\
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" --output-palette\n"\
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" --use-palette <palette file>\n"\
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" --verbose\n", config.argv[0]);
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exit(1);
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}
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void
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abort_(const char * s, ...)
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{
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fprintf(stderr, "%s: ", config.argv[0]);
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va_list args;
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va_start(args, s);
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vfprintf(stderr, s, args);
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fprintf(stderr, "\n");
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va_end(args);
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exit(1);
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}
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FILE *
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openFileWrite(const char * s, ...)
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{
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char buffer[4096];
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va_list args;
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va_start(args, s);
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vsprintf(buffer, s, args);
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va_end(args);
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if (config.verbose) {
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printf("Opening %s for writing\n", buffer);
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}
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FILE* fp = fopen(buffer, "w+");
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if (!fp) {
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abort_("Failed to open %s for writing\n", buffer);
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}
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return fp;
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}
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FILE *
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openFileRead(const char * s, ...)
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{
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char buffer[4096];
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va_list args;
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va_start(args, s);
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vsprintf(buffer, s, args);
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va_end(args);
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FILE* fp = fopen(buffer, "r");
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if (!fp) {
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abort_("Failed to open %s for reading\n", buffer);
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}
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return fp;
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}
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void
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outputPalette(char* outFilename, imagecon_image_t* ic)
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{
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if (config.verbose) {
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printf("outputPalette...\n");
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}
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FILE* fp = 0;
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FILE* paletteFP = 0;
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FILE* paletteAsmFP = 0;
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if (config.outputCopperList) {
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fp = openFileWrite("%s-copper-list.s", outFilename);
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}
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if (config.outputPalette) {
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paletteFP = openFileWrite("%s.pal", outFilename);
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}
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if (config.outputPaletteAsm) {
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paletteAsmFP = openFileWrite("%s-palette.s", outFilename);
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fprintf(paletteAsmFP, "\tmovem.l d0-a6,-(sp)\n\tlea CUSTOM,a6\n");
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}
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if (config.verbose) {
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printf("outputPalette:\n");
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}
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for (int i = 0; i < ic->numColors; i++) {
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if (config.verbose) {
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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);
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}
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if (paletteFP) {
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fprintf(paletteFP, "%03x\n", ic->palette[i].r << 8 | ic->palette[i].g << 4 | ic->palette[i].b);
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}
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if (paletteAsmFP) {
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fprintf(paletteAsmFP, "\tlea COLOR%02d(a6),a0\n\tmove.w #$%03x,(a0)\n", i, ic->palette[i].r << 8 | ic->palette[i].g << 4 | ic->palette[i].b);
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}
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if (fp) {
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fprintf(fp, "\tdc.w $%x,$%x\n", 0x180+(i*2), ic->palette[i].r << 8 | ic->palette[i].g << 4 | ic->palette[i].b);
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}
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}
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if (paletteFP) {
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fclose(paletteFP);
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}
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if (paletteAsmFP) {
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fprintf(paletteAsmFP, "\tmovem.l (sp)+,d0-a6\n");
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fclose(paletteFP);
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}
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if (fp) {
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fclose(fp);
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}
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if (config.verbose) {
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printf("done\n\n");
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}
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}
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void
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generateQuantizedPalette(imagecon_image_t* ic)
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{
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if (config.verbose) {
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printf("generateQuantizedPalette...\n");
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}
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liq_attr *attr = liq_attr_create();
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liq_image *image = liq_image_create_rgba_rows(attr, (void**)ic->rowPointers, ic->width, ic->height, 0);
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if (config.overridePalette) {
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FILE* fp = openFileRead(config.overridePalette);
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int paletteIndex;
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for (paletteIndex = 0; paletteIndex < MAX_PALETTE; paletteIndex++) {
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unsigned int c;
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char buffer[255];
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char* line = fgets(buffer, 255, fp);
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liq_color color;
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if (!line) {
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break;
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}
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sscanf(buffer, "%x\n", &c);
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color.r = (c >> 8 & 0xF) << 4;
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color.g = (c >> 4 & 0xF) << 4;
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color.b = (c >> 0 & 0xF) << 4;
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color.a = 255;
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if (config.verbose) {
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printf("adding fixed color %d %d %d %d\n", paletteIndex, color.r, color.g, color.b);
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}
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liq_image_add_fixed_color(image, color);
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}
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config.maxColors = paletteIndex;
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}
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liq_set_max_colors(attr, config.maxColors);
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liq_set_speed(attr, 1);
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liq_result *res = liq_quantize_image(attr, image);
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liq_write_remapped_image(res, image, ic->amigaImage, ic->width*ic->height);
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const liq_palette *pal = liq_get_palette(res);
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if (config.verbose) {
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printf("pal->count = %d\n", pal->count);
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printf("generateQuantizedPalette: post liq_write_remapped_image\n");
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}
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for (unsigned i = 0; i < pal->count; i++) {
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if (config.verbose) {
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printf("%02d: r=%03d g=%03d b=%03d a=%03d\n", i, pal->entries[i].r, pal->entries[i].g, pal->entries[i].b, pal->entries[i].a);
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}
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ic->palette[i].r = pal->entries[i].r >> 4;
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ic->palette[i].g = pal->entries[i].g >> 4;
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ic->palette[i].b = pal->entries[i].b >> 4;
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ic->palette[i].a = pal->entries[i].a >> 4;
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}
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if (config.verbose) {
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printf("done\n\n");
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}
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ic->numColors = pal->count;
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}
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void
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generatePalette(imagecon_image_t* ic)
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{
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if (config.verbose) {
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printf("generatePalette...\n");
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}
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int paletteIndex = 0;
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for (int y=0; y< ic->height; y++) {
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png_byte* row = ic->rowPointers[y];
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for (int x=0; x < ic->width; x++) {
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png_byte* ptr = &(row[x*4]);
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amiga_color_t color;
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color.r = ptr[0] >> 4;
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color.g = ptr[1] >> 4;
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color.b = ptr[2] >> 4;
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color.a = ptr[3] >> 4;
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int index = -1;
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for (int i = 0; i < paletteIndex; i++) {
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if (memcmp(&ic->palette[i], &color, sizeof(amiga_color_t)) == 0) {
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index = i;
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break;
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}
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}
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if (index == -1 && paletteIndex < MAX_PALETTE) {
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index = paletteIndex;
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paletteIndex++;
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} else if (index == -1 && paletteIndex == MAX_PALETTE) {
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abort_("Too many colors. Use --quantize.\n");
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}
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ic->palette[index] = color ;
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ic->amigaImage[(ic->width*y)+x] = index;
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}
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}
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if (config.verbose) {
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printf("done\n\n");
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}
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ic->numColors = paletteIndex;
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}
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void
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outputBitplanes(char* outFilename, imagecon_image_t* ic)
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{
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if (config.verbose) {
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printf("outputBitplanes...\n");
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}
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int numBitPlanes = (int)(log(ic->numColors-1) / log(2))+1;
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if (config.verbose) {
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printf("number of colors = %d\n", ic->numColors);
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printf("number of bitplanes = %d\n", numBitPlanes);
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}
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int byteWidth = (ic->width + 7) / 8;
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char** bitplanes = malloc(sizeof(void*)*numBitPlanes);
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for (int i = 0; i < numBitPlanes; i++) {
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bitplanes[i] = calloc(byteWidth*ic->height, 1);
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}
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for (int y = 0, writeIndex = 0; y < ic->height; y++) {
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for (int byte = 0;byte < byteWidth; byte++) {
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for (int bit = 0; bit < 8; bit++) {
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int x = byte * 8 + 7 - bit;
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int palette_index = ic->amigaImage[(ic->width*y)+x];
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for (int plane_index = 0; plane_index < numBitPlanes; plane_index++) {
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char* plane = bitplanes[plane_index];
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plane[writeIndex] |= ((palette_index >> plane_index) & 1) << bit;
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}
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}
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writeIndex++;
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}
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}
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FILE* fp = openFileWrite("%s.bin", outFilename);
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for (int y = 0; y < ic->height; y++) {
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for (int plane_index = 0; plane_index < numBitPlanes; plane_index++) {
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char* plane = bitplanes[plane_index];
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fwrite(&plane[y*byteWidth], byteWidth, 1, fp);
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}
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}
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fclose(fp);
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if (config.verbose) {
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printf("done\n\n");
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}
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}
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void
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outputMask(char* outFilename, imagecon_image_t* ic)
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{
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if (config.verbose) {
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printf("outputMask...\n");
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}
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int numBitPlanes = (int)(log(ic->numColors-1) / log(2))+1;
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int byteWidth = (ic->width + 7) / 8;
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char** bitplanes = malloc(sizeof(void*)*numBitPlanes);
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for (int i = 0; i < numBitPlanes; i++) {
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bitplanes[i] = calloc(byteWidth*ic->height, 1);
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}
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for (int y = 0, writeIndex = 0; y < ic->height; y++) {
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for (int byte = 0;byte < byteWidth; byte++) {
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for (int bit = 0; bit < 8; bit++) {
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int x = byte * 8 + 7 - bit;
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int paletteIndex = ic->amigaImage[(ic->width*y)+x];
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int bitmask = ic->palette[paletteIndex].a > 0 ? 0xFF : 0;
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for (int plane_index = 0; plane_index < numBitPlanes; plane_index++) {
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char* plane = bitplanes[plane_index];
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plane[writeIndex] |= ((bitmask >> plane_index) & 1) << bit;
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}
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}
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writeIndex++;
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}
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}
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FILE* fp = openFileWrite("%s-mask.bin", outFilename);
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for (int y = 0; y < ic->height; y++) {
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for (int plane_index = 0; plane_index < numBitPlanes; plane_index++) {
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char* plane = bitplanes[plane_index];
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fwrite(&plane[y*byteWidth], byteWidth, 1, fp);
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}
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}
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fclose(fp);
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if (config.verbose) {
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printf("done\n\n");
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}
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}
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void
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processFile(char* outFilename, imagecon_image_t* ic)
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{
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if (config.verbose) {
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printf("processFile...\n");
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}
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if (config.quantize || config.overridePalette) {
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generateQuantizedPalette(ic);
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} else {
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generatePalette(ic);
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}
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if (config.outputBitplanes) {
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outputBitplanes(outFilename, ic);
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}
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if (config.outputMask) {
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outputMask(outFilename, ic);
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}
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outputPalette(outFilename, ic);
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if (config.verbose) {
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printf("done\n\n");
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}
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}
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void
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splitFiles(char* inputFile, int* count, char*** vector)
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{
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char* ptr = inputFile;
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char* end;
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char** files = calloc(sizeof(void*), 1);
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int index = 0;
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do {
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end = strchr(ptr, ',');
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char* file;
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if (end) {
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file = calloc(end-ptr+1, 1);
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strncpy(file, ptr, end-ptr);
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ptr = end+1;
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} else {
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file = calloc(strlen(ptr)+1, 1);
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strcpy(file, ptr);
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}
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files[index++] = file;
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files = realloc(files, index*sizeof(void*));
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} while (end != 0);
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*vector = files;
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*count = index;
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}
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#define max(x,y) (x > y ? x : y)
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void
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combineImages(imagecon_image_t** images, int numImages, imagecon_image_t* ic)
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{
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ic->width = 0;
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ic->height = 0;
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for (int i = 0; i < numImages; i++) {
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ic->width = max(images[i]->width, ic->width);
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ic->height += images[i]->height;
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}
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ic->rowPointers = (png_bytep*) malloc(sizeof(png_bytep) * ic->height);
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ic->amigaImage = calloc(ic->width*ic->height, 1);
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for (int y = 0; y < ic->height; y++) {
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ic->rowPointers[y] = (png_byte*) calloc(ic->width*4, 1);
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}
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for (int i = 0, ny = 0; i < numImages; i++) {
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for (int y = 0; y < images[i]->height; y++, ny++) {
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for (int r = 0; r < ic->width*4; r+=4) {
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memcpy(&ic->rowPointers[ny][0]+r, &images[i]->rowPointers[y][0], 4);
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}
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memcpy(ic->rowPointers[ny], images[i]->rowPointers[y], images[i]->width*4);
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}
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}
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}
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int
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main(int argc, char **argv)
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{
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config.argv = argv;
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char* inputFile = 0, *outputFile = 0;
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int c;
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while (1) {
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static struct option long_options[] = {
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{"verbose", no_argument, &config.verbose, 1},
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{"quantize", no_argument, &config.quantize, 1},
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{"output-copperlist", no_argument, &config.outputCopperList, 1},
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{"output-bitplanes", no_argument, &config.outputBitplanes, 1},
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{"output-palette", no_argument, &config.outputPalette, 1},
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{"output-palette-asm", no_argument, &config.outputPaletteAsm, 1},
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{"output-mask", no_argument, &config.outputMask, 1},
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{"use-palette", required_argument, 0, 'p'},
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{"output", required_argument, 0, 'o'},
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{"colors", required_argument, 0, 'c'},
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{"input", required_argument, 0, 'i'},
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{0, 0, 0, 0}
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};
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int option_index = 0;
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c = getopt_long (argc, argv, "o:c:i:", long_options, &option_index);
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if (c == -1)
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break;
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switch (c) {
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case 0:
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break;
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case 'i':
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inputFile = optarg;
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break;
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case 'o':
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outputFile = optarg;
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break;
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case 'p':
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config.overridePalette = optarg;
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break;
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case 'c':
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if (sscanf(optarg, "%d", &config.maxColors) != 1) {
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abort_("invalid number of colors");
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}
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if (config.maxColors > MAX_PALETTE) {
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abort_("Number of colors exceeds limit (%d colors)", MAX_PALETTE);
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}
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break;
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case '?':
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usage();
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break;
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default:
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usage();
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break;
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}
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}
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if (outputFile == 0 && inputFile != 0) {
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outputFile = basename(inputFile);
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char* ptr = malloc(strlen(outputFile)+1);
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strcpy(ptr, outputFile);
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outputFile = ptr;
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ptr = rindex(outputFile, '.');
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if (ptr) {
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*ptr = 0;
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|
}
|
|
}
|
|
|
|
if (inputFile == 0 || optind < argc) {
|
|
usage();
|
|
}
|
|
|
|
if (strchr(inputFile, ',') == 0) {
|
|
imagecon_image_t ic = {0};
|
|
png_read(inputFile, &ic);
|
|
processFile(outputFile, &ic);
|
|
} else {
|
|
char** files;
|
|
int numFiles;
|
|
splitFiles(inputFile, &numFiles, &files);
|
|
|
|
imagecon_image_t** images = malloc(sizeof(imagecon_image_t*)*numFiles);
|
|
|
|
for (int i = 0; i < numFiles; i++) {
|
|
images[i] = calloc(sizeof(imagecon_image_t), 1);
|
|
png_read(files[i], images[i]);
|
|
}
|
|
|
|
imagecon_image_t combined;
|
|
combineImages(images, numFiles, &combined);
|
|
processFile(outputFile, &combined);
|
|
}
|
|
|
|
return 0;
|
|
}
|