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Lines Matching full:ppa

2762       png_const_bytep ppa, ppb;
2768       ppa = rowa;
2775       for (y=0, match=1; y<height && match; ++y, ppa += stridea, ppb += strideb)
2782             png_byte aval = ppa[x];
2965       png_const_bytep ppa, ppb;
2968       for (x=0, ppa=rowa, ppb=rowb; x<width; ++x)
2973             psa = (png_const_bytep)a->colormap + a_sample * *ppa++;
2975             psa = ppa, ppa += a_sample;