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@ -16,10 +16,10 @@ extern int verbosity; /* must be declared around main() */ |
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/* ---------------------------------------------------------------- */ |
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/*
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* A + B -> D |
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* A + B -> D |
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* why is this func so slow ? |
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*/ |
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int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d) |
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int fimg_add_3(FloatImg *a, FloatImg *b, FloatImg *d) |
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{ |
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int idx, nbpixels; |
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@ -40,13 +40,40 @@ for (idx=0; idx<nbpixels; idx++) { |
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d->B[idx] = a->B[idx] + b->B[idx]; |
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} |
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return 0; |
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} |
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/* ---------------------------------------------------------------- */ |
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/*
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* B += A may be faster than fimg_add_3 ? |
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*/ |
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int fimg_add_2(FloatImg *a, FloatImg *b) |
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{ |
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int idx, nbpixels; |
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#if DEBUG_LEVEL |
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fprintf(stderr, ">>> %s ( %p %p )\n", __func__, a, b); |
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#endif |
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if (3 != a->type || 3 != b->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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nbpixels = a->width * a->height; |
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for (idx=0; idx<nbpixels; idx++) { |
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b->R[idx] += a->R[idx]; |
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b->G[idx] += a->G[idx]; |
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b->B[idx] += a->B[idx]; |
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} |
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return 0; |
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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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int fimg_sub_3(FloatImg *a, FloatImg *b, FloatImg *d) |
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{ |
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int idx, nbpixels; |
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@ -57,7 +84,7 @@ fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, a, b, d); |
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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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} |
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nbpixels = a->width * a->height; |
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@ -76,7 +103,7 @@ return 0; |
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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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int fimg_mul_3(FloatImg *a, FloatImg *b, FloatImg *d) |
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{ |
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int idx, nbpixels; |
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