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/*
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* OPERATORS |
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* |
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* |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include "../floatimg.h" |
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extern int verbosity; /* must be declared around main() */ |
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/* ---------------------------------------------------------------- */ |
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int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d) |
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{ |
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int idx, nbiter; |
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#if DEBUG_LEVEL |
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fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, a, b, d); |
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#endif |
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if (3 != a->type || 3 != b->type || 3 != d->type) { |
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fprintf(stderr, "%s : got a bad type fimg\n", __func__); |
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return -8; |
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}
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nbiter = a->width * a->height; |
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for (idx=0; idx<nbiter; idx++) { |
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d->R[idx] = a->R[idx] + b->R[idx]; |
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d->G[idx] = a->G[idx] + b->G[idx]; |
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d->B[idx] = a->B[idx] + b->B[idx]; |
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} |
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return -1; |
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} |
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/* ---------------------------------------------------------------- */ |
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/*
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* A - B -> D |
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*/ |
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int fimg_sub(FloatImg *a, FloatImg *b, FloatImg *d) |
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{ |
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int idx, nbiter; |
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#if DEBUG_LEVEL |
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fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, a, b, d); |
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#endif |
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if (3 != a->type || 3 != b->type || 3 != d->type) { |
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fprintf(stderr, "%s : got a bad type fimg\n", __func__); |
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return -8; |
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}
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nbiter = a->width * a->height; |
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for (idx=0; idx<nbiter; idx++) { |
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d->R[idx] = fabs(a->R[idx] - b->R[idx]); |
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d->G[idx] = fabs(a->G[idx] - b->G[idx]); |
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d->B[idx] = fabs(a->B[idx] - b->B[idx]); |
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} |
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return -1; |
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} |
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/* ---------------------------------------------------------------- */ |
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/* ---------------------------------------------------------------- */ |
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/*
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* A * B -> D |
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*/ |
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int fimg_mul(FloatImg *a, FloatImg *b, FloatImg *d) |
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{ |
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int idx, nbiter; |
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#if DEBUG_LEVEL |
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fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, a, b, d); |
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#endif |
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if (3 != a->type || 3 != b->type || 3 != d->type) { |
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fprintf(stderr, "%s : got a bad type fimg\n", __func__); |
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return -8; |
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}
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nbiter = a->width * a->height; |
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for (idx=0; idx<nbiter; idx++) { |
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d->R[idx] = a->R[idx] * b->R[idx]; |
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d->G[idx] = a->G[idx] * b->G[idx]; |
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d->B[idx] = a->B[idx] * b->B[idx]; |
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} |
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return -1; |
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} |
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/* ---------------------------------------------------------------- */ |
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