Coverage Report

Created: 2024-06-18 06:05

/src/libwebp/src/enc/cost_enc.h
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// Copyright 2011 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// Cost tables for level and modes.
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//
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// Author: Skal (pascal.massimino@gmail.com)
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#ifndef WEBP_ENC_COST_ENC_H_
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#define WEBP_ENC_COST_ENC_H_
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#include <assert.h>
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#include <stdlib.h>
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#include "src/enc/vp8i_enc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// On-the-fly info about the current set of residuals. Handy to avoid
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// passing zillions of params.
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typedef struct VP8Residual VP8Residual;
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struct VP8Residual {
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  int first;
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  int last;
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  const int16_t* coeffs;
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  int coeff_type;
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  ProbaArray*   prob;
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  StatsArray*   stats;
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  CostArrayPtr  costs;
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};
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void VP8InitResidual(int first, int coeff_type,
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                     VP8Encoder* const enc, VP8Residual* const res);
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int VP8RecordCoeffs(int ctx, const VP8Residual* const res);
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// Record proba context used.
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static WEBP_INLINE int VP8RecordStats(int bit, proba_t* const stats) {
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  proba_t p = *stats;
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  // An overflow is inbound. Note we handle this at 0xfffe0000u instead of
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  // 0xffff0000u to make sure p + 1u does not overflow.
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  if (p >= 0xfffe0000u) {
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    p = ((p + 1u) >> 1) & 0x7fff7fffu;  // -> divide the stats by 2.
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  }
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  // record bit count (lower 16 bits) and increment total count (upper 16 bits).
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  p += 0x00010000u + bit;
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  *stats = p;
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  return bit;
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}
Unexecuted instantiation: webp_enc.c:VP8RecordStats
Unexecuted instantiation: cost.c:VP8RecordStats
Unexecuted instantiation: cost_sse2.c:VP8RecordStats
Unexecuted instantiation: enc_sse2.c:VP8RecordStats
Unexecuted instantiation: analysis_enc.c:VP8RecordStats
Unexecuted instantiation: frame_enc.c:VP8RecordStats
Unexecuted instantiation: quant_enc.c:VP8RecordStats
Unexecuted instantiation: token_enc.c:VP8RecordStats
Unexecuted instantiation: cost_enc.c:VP8RecordStats
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// Cost of coding one event with probability 'proba'.
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static WEBP_INLINE int VP8BitCost(int bit, uint8_t proba) {
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  return !bit ? VP8EntropyCost[proba] : VP8EntropyCost[255 - proba];
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}
Unexecuted instantiation: webp_enc.c:VP8BitCost
Unexecuted instantiation: cost.c:VP8BitCost
Unexecuted instantiation: cost_sse2.c:VP8BitCost
Unexecuted instantiation: enc_sse2.c:VP8BitCost
Unexecuted instantiation: analysis_enc.c:VP8BitCost
Unexecuted instantiation: frame_enc.c:VP8BitCost
Unexecuted instantiation: quant_enc.c:VP8BitCost
Unexecuted instantiation: token_enc.c:VP8BitCost
Unexecuted instantiation: cost_enc.c:VP8BitCost
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// Level cost calculations
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extern const uint16_t VP8LevelCodes[MAX_VARIABLE_LEVEL][2];
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void VP8CalculateLevelCosts(VP8EncProba* const proba);
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static WEBP_INLINE int VP8LevelCost(const uint16_t* const table, int level) {
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  return VP8LevelFixedCosts[level]
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       + table[(level > MAX_VARIABLE_LEVEL) ? MAX_VARIABLE_LEVEL : level];
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}
Unexecuted instantiation: webp_enc.c:VP8LevelCost
Unexecuted instantiation: cost.c:VP8LevelCost
Unexecuted instantiation: cost_sse2.c:VP8LevelCost
Unexecuted instantiation: enc_sse2.c:VP8LevelCost
Unexecuted instantiation: analysis_enc.c:VP8LevelCost
Unexecuted instantiation: frame_enc.c:VP8LevelCost
Unexecuted instantiation: quant_enc.c:VP8LevelCost
Unexecuted instantiation: token_enc.c:VP8LevelCost
Unexecuted instantiation: cost_enc.c:VP8LevelCost
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// Mode costs
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extern const uint16_t VP8FixedCostsUV[4];
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extern const uint16_t VP8FixedCostsI16[4];
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extern const uint16_t VP8FixedCostsI4[NUM_BMODES][NUM_BMODES][NUM_BMODES];
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//------------------------------------------------------------------------------
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#ifdef __cplusplus
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}    // extern "C"
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#endif
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#endif  // WEBP_ENC_COST_ENC_H_