31     const VP8DistoStats* const stats, uint32_t N  /*num samples*/) {  in SSIMCalculation()  argument
36   const uint64_t xmxm = (uint64_t)stats->xm * stats->xm;  in SSIMCalculation()
37   const uint64_t ymym = (uint64_t)stats->ym * stats->ym;  in SSIMCalculation()
39     const int64_t xmym = (int64_t)stats->xm * stats->ym;  in SSIMCalculation()
40     const int64_t sxy = (int64_t)stats->xym * N - xmym;    // can be negative  in SSIMCalculation()
41     const uint64_t sxx = (uint64_t)stats->xxm * N - xmxm;  in SSIMCalculation()
42     const uint64_t syy = (uint64_t)stats->yym * N - ymym;  in SSIMCalculation()
55 double VP8SSIMFromStats(const VP8DistoStats* const stats) {  in VP8SSIMFromStats()  argument
56   return SSIMCalculation(stats, kWeightSum);  in VP8SSIMFromStats()
59 double VP8SSIMFromStatsClipped(const VP8DistoStats* const stats) {  in VP8SSIMFromStatsClipped()  argument
60   return SSIMCalculation(stats, stats->w);  in VP8SSIMFromStatsClipped()
66   VP8DistoStats stats = { 0, 0, 0, 0, 0, 0 };  in SSIMGetClipped_C()  local
82       stats.w   += w;  in SSIMGetClipped_C()
83       stats.xm  += w * s1;  in SSIMGetClipped_C()
84       stats.ym  += w * s2;  in SSIMGetClipped_C()
85       stats.xxm += w * s1 * s1;  in SSIMGetClipped_C()
86       stats.xym += w * s1 * s2;  in SSIMGetClipped_C()
87       stats.yym += w * s2 * s2;  in SSIMGetClipped_C()
90   return VP8SSIMFromStatsClipped(&stats);  in SSIMGetClipped_C()
95   VP8DistoStats stats = { 0, 0, 0, 0, 0, 0 };  in SSIMGet_C()  local
102       stats.xm  += w * s1;  in SSIMGet_C()
103       stats.ym  += w * s2;  in SSIMGet_C()
104       stats.xxm += w * s1 * s1;  in SSIMGet_C()
105       stats.xym += w * s1 * s2;  in SSIMGet_C()
106       stats.yym += w * s2 * s2;  in SSIMGet_C()
109   return VP8SSIMFromStats(&stats);  in SSIMGet_C()