560     VP8LHistogramSet* const image_histo) {  in HistogramBuild()  argument
563   VP8LHistogram** const histograms = image_histo->histograms;  in HistogramBuild()
566   VP8LHistogramSetClear(image_histo);  in HistogramBuild()
583                                     VP8LHistogramSet* const image_histo,  in HistogramCopyAndAnalyze()  argument
589   VP8LHistogram** const histograms = image_histo->histograms;  in HistogramCopyAndAnalyze()
590   assert(image_histo->max_size == orig_histo->max_size);  in HistogramCopyAndAnalyze()
603       HistogramSetRemoveHistogram(image_histo, i, num_used);  in HistogramCopyAndAnalyze()
610       assert(cluster_id <= image_histo->max_size);  in HistogramCopyAndAnalyze()
617 static void HistogramAnalyzeEntropyBin(VP8LHistogramSet* const image_histo,  in HistogramAnalyzeEntropyBin()  argument
621   VP8LHistogram** const histograms = image_histo->histograms;  in HistogramAnalyzeEntropyBin()
622   const int histo_size = image_histo->size;  in HistogramAnalyzeEntropyBin()
644 static void HistogramCombineEntropyBin(VP8LHistogramSet* const image_histo,  in HistogramCombineEntropyBin()  argument
653   VP8LHistogram** const histograms = image_histo->histograms;  in HistogramCombineEntropyBin()
669   for (idx = 0; idx < image_histo->size; ++idx) {  in HistogramCombineEntropyBin()
678       HistogramSetRemoveHistogram(image_histo, idx, num_used);  in HistogramCombineEntropyBin()
702           HistogramSetRemoveHistogram(image_histo, idx, num_used);  in HistogramCombineEntropyBin()
712     for (idx = 0; idx < image_histo->size; ++idx) {  in HistogramCombineEntropyBin()
837 static int HistogramCombineGreedy(VP8LHistogramSet* const image_histo,  in HistogramCombineGreedy()  argument
840   const int image_histo_size = image_histo->size;  in HistogramCombineGreedy()
842   VP8LHistogram** const histograms = image_histo->histograms;  in HistogramCombineGreedy()
858     if (image_histo->histograms[i] == NULL) continue;  in HistogramCombineGreedy()
861       if (image_histo->histograms[j] == NULL) continue;  in HistogramCombineGreedy()
873     HistogramSetRemoveHistogram(image_histo, idx2, num_used);  in HistogramCombineGreedy()
888     for (i = 0; i < image_histo->size; ++i) {  in HistogramCombineGreedy()
889       if (i == idx1 || image_histo->histograms[i] == NULL) continue;  in HistogramCombineGreedy()
890       HistoQueuePush(&histo_queue, image_histo->histograms, idx1, i, 0.);  in HistogramCombineGreedy()
908 static int HistogramCombineStochastic(VP8LHistogramSet* const image_histo,  in HistogramCombineStochastic()  argument
916   VP8LHistogram** const histograms = image_histo->histograms;  in HistogramCombineStochastic()
936   for (j = 0, iter = 0; iter < image_histo->size; ++iter) {  in HistogramCombineStochastic()
992     HistogramSetRemoveHistogram(image_histo, best_idx2, num_used);  in HistogramCombineStochastic()
1161 static void RemoveEmptyHistograms(VP8LHistogramSet* const image_histo) {  in RemoveEmptyHistograms()  argument
1164   for (i = 0, size = 0; i < image_histo->size; ++i) {  in RemoveEmptyHistograms()
1165     if (image_histo->histograms[i] == NULL) continue;  in RemoveEmptyHistograms()
1166     image_histo->histograms[size++] = image_histo->histograms[i];  in RemoveEmptyHistograms()
1168   image_histo->size = size;  in RemoveEmptyHistograms()
1175                              VP8LHistogramSet* const image_histo,  in VP8LGetHistoImageSymbols()  argument
1199   HistogramCopyAndAnalyze(orig_histo, image_histo, &num_used,  in VP8LGetHistoImageSymbols()
1211     HistogramAnalyzeEntropyBin(image_histo, bin_map, low_effort);  in VP8LGetHistoImageSymbols()
1213     HistogramCombineEntropyBin(image_histo, &num_used, histogram_symbols,  in VP8LGetHistoImageSymbols()
1217     OptimizeHistogramSymbols(image_histo, cluster_mappings, num_clusters,  in VP8LGetHistoImageSymbols()
1228     if (!HistogramCombineStochastic(image_histo, &num_used, threshold_size,  in VP8LGetHistoImageSymbols()
1233       RemoveEmptyHistograms(image_histo);  in VP8LGetHistoImageSymbols()
1234       if (!HistogramCombineGreedy(image_histo, &num_used)) {  in VP8LGetHistoImageSymbols()
1241   RemoveEmptyHistograms(image_histo);  in VP8LGetHistoImageSymbols()
1242   HistogramRemap(orig_histo, image_histo, histogram_symbols);  in VP8LGetHistoImageSymbols()