516     const int idx1 = bin_map[bin_offset + 1];  in HistogramCombineEntropyBin()  local
524         VP8LHistogramAdd(histograms[idx1], histograms[idx2], histograms[idx1]);  in HistogramCombineEntropyBin()
531               HistogramAddEval(histograms[idx1], histograms[idx2],  in HistogramCombineEntropyBin()
541                 ((histograms[idx1]->trivial_symbol_ == VP8L_NON_TRIVIAL_SYM) &&  in HistogramCombineEntropyBin()
545               HistogramSwap(&cur_combo, &histograms[idx1]);  in HistogramCombineEntropyBin()
556       UpdateHistogramCost(histograms[idx1]);  in HistogramCombineEntropyBin()
576   int idx1;  member
638 static void PreparePair(VP8LHistogram** histograms, int idx1, int idx2,  in PreparePair()  argument
641   if (idx1 > idx2) {  in PreparePair()
643     idx2 = idx1;  in PreparePair()
644     idx1 = tmp;  in PreparePair()
646   pair->idx1 = idx1;  in PreparePair()
649       HistogramAddEval(histograms[idx1], histograms[idx2], histos, 0);  in PreparePair()
683     const int idx1 = histo_queue.queue[0].idx1;  in HistogramCombineGreedy()  local
685     VP8LHistogramAdd(histograms[idx2], histograms[idx1], histograms[idx1]);  in HistogramCombineGreedy()
686     histograms[idx1]->bit_cost_ = histo_queue.queue[0].cost_combo;  in HistogramCombineGreedy()
700       if (p->idx1 == idx1 || p->idx2 == idx1 ||  in HistogramCombineGreedy()
701           p->idx1 == idx2 || p->idx2 == idx2) {  in HistogramCombineGreedy()
716       if (clusters[i] != idx1) {  in HistogramCombineGreedy()
717         PreparePair(histograms, idx1, clusters[i],  in HistogramCombineGreedy()
768       const uint32_t idx1 = MyRand(&seed) % image_histo_size;  in HistogramCombineStochastic()  local
772       const uint32_t idx2 = (idx1 + diff + 1) % image_histo_size;  in HistogramCombineStochastic()
773       if (idx1 == idx2) {  in HistogramCombineStochastic()
778       curr_cost_diff = HistogramAddEval(histograms[idx1], histograms[idx2],  in HistogramCombineStochastic()
783         best_idx1 = idx1;  in HistogramCombineStochastic()