Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/brotli/c/enc/histogram_inc.h @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
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b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 /* NOLINT(build/header_guard) */
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2 /* Copyright 2013 Google Inc. All Rights Reserved.
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4 Distributed under MIT license.
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5 See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
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6 */
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8 /* template parameters: Histogram, DATA_SIZE, DataType */
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10 /* A simple container for histograms of data in blocks. */
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12 typedef struct FN(Histogram) {
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13 uint32_t data_[DATA_SIZE];
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14 size_t total_count_;
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15 double bit_cost_;
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16 } FN(Histogram);
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18 static BROTLI_INLINE void FN(HistogramClear)(FN(Histogram)* self) {
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19 memset(self->data_, 0, sizeof(self->data_));
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20 self->total_count_ = 0;
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21 self->bit_cost_ = HUGE_VAL;
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22 }
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24 static BROTLI_INLINE void FN(ClearHistograms)(
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25 FN(Histogram)* array, size_t length) {
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26 size_t i;
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27 for (i = 0; i < length; ++i) FN(HistogramClear)(array + i);
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28 }
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30 static BROTLI_INLINE void FN(HistogramAdd)(FN(Histogram)* self, size_t val) {
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31 ++self->data_[val];
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32 ++self->total_count_;
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33 }
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35 static BROTLI_INLINE void FN(HistogramAddVector)(FN(Histogram)* self,
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36 const DataType* p, size_t n) {
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37 self->total_count_ += n;
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38 n += 1;
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39 while (--n) ++self->data_[*p++];
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40 }
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42 static BROTLI_INLINE void FN(HistogramAddHistogram)(FN(Histogram)* self,
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43 const FN(Histogram)* v) {
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44 size_t i;
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45 self->total_count_ += v->total_count_;
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46 for (i = 0; i < DATA_SIZE; ++i) {
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47 self->data_[i] += v->data_[i];
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48 }
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49 }
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51 static BROTLI_INLINE size_t FN(HistogramDataSize)(void) { return DATA_SIZE; }