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https://frontier.innolan.net/github/AmigaExamples.git
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112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
#include "imagecon.h"
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static void
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_ham_outputBitplanes(char* outFilename, imagecon_image_t* ic)
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{
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if (config.verbose) {
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printf("outputHamBitplanes\n");
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}
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int numBitPlanes = 6;
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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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ham_control_t* hams;
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if (config.dither) {
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dither_image(ic, dither_getHamColor);
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hams = dither_createHams(ic);
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} else {
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hams = malloc(sizeof(ham_control_t)*ic->width*ic->height);
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for (int y = 0; y < ic->height; y++) {
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amiga_color_t lastPixel = { -1, -1, -1, -1};
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for (int x = 0; x < ic->width; x++) {
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amiga_color_t orig = color_getOriginalPixel(ic, x, y);
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ham_control_t ham = color_findClosestHamPixel(ic, orig, lastPixel);
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lastPixel = ham.pixel;
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hams[(y*ic->width)+x] = ham;
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}
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}
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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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ham_control_t ham = hams[(y*ic->width)+x];
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int _numBitPlanes = 4;
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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] |= ((ham.data >> plane_index) & 1) << bit;
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}
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for (int plane_index = 0; plane_index < 2; plane_index++) {
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char* plane = bitplanes[4+plane_index];
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plane[writeIndex] |= ((ham.control >> 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 = file_openWrite("%s-ham.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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#if 0
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void
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ham_process(char* outFilename, imagecon_image_t* ic)
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{
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config.maxColors = 256;
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generateQuantizedImage(ic, 0);
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dither_image(ic, dither_getPalettedColor);
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dither_transferToPaletted(ic);
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color_transferPalettedToOriginal(ic);
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config.maxColors = 16;
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generateQuantizedImage(ic, 0);
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if (config.outputBitplanes) {
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_ham_outputBitplanes(outFilename, ic);
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}
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palette_output(outFilename, ic);
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}
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#else
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void
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ham_process(char* outFilename, imagecon_image_t* ic)
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{
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config.maxColors = 16;
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generateQuantizedImage(ic, 0);
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if (config.outputBitplanes) {
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_ham_outputBitplanes(outFilename, ic);
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}
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palette_output(outFilename, ic);
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}
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#endif
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