58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AV1_ENCODER_SUBEXP_H_
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#define AV1_ENCODER_SUBEXP_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "aom_dsp/prob.h"
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struct aom_writer;
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void av1_write_prob_diff_update(struct aom_writer *w, aom_prob newp,
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aom_prob oldp);
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void av1_cond_prob_diff_update(struct aom_writer *w, aom_prob *oldp,
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const unsigned int ct[2]);
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int av1_prob_diff_update_savings_search(const unsigned int *ct, aom_prob oldp,
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aom_prob *bestp, aom_prob upd);
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int av1_prob_diff_update_savings_search_model(const unsigned int *ct,
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const aom_prob *oldp,
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aom_prob *bestp, aom_prob upd,
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int stepsize);
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int av1_cond_prob_diff_update_savings(aom_prob *oldp, const unsigned int ct[2]);
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#if CONFIG_ENTROPY
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int av1_prob_update_search_subframe(unsigned int ct[][2], aom_prob oldp,
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aom_prob *bestp, aom_prob upd, int n);
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int av1_prob_update_search_model_subframe(
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unsigned int ct[ENTROPY_NODES][COEF_PROBS_BUFS][2], const aom_prob *oldp,
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aom_prob *bestp, aom_prob upd, int stepsize, int n);
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#endif // CONFIG_ENTROPY
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//
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// mag_bits is number of bits for magnitude. The alphabet is of size
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// 2 * 2^mag_bits + 1, symmetric around 0, where one bit is used to
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// indicate 0 or non-zero, mag_bits bits are used to indicate magnitide
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// and 1 more bit for the sign if non-zero.
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void aom_write_primitive_symmetric(aom_writer *w, int word,
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unsigned int mag_bits);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_ENCODER_SUBEXP_H_
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