xref: /aosp_15_r20/external/libvpx/vp9/encoder/vp9_subexp.h (revision fb1b10ab9aebc7c7068eedab379b749d7e3900be)

/*
 *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef VPX_VP9_ENCODER_VP9_SUBEXP_H_
#define VPX_VP9_ENCODER_VP9_SUBEXP_H_

#ifdef __cplusplus
extern "C" {
#endif

#include "vpx_dsp/prob.h"

struct vpx_writer;

void vp9_write_prob_diff_update(struct vpx_writer *w, vpx_prob newp,
                                vpx_prob oldp);

void vp9_cond_prob_diff_update(struct vpx_writer *w, vpx_prob *oldp,
                               const unsigned int ct[2]);

int64_t vp9_prob_diff_update_savings_search(const unsigned int *ct,
                                            vpx_prob oldp, vpx_prob *bestp,
                                            vpx_prob upd);

int64_t vp9_prob_diff_update_savings_search_model(const unsigned int *ct,
                                                  const vpx_prob oldp,
                                                  vpx_prob *bestp, vpx_prob upd,
                                                  int stepsize);

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // VPX_VP9_ENCODER_VP9_SUBEXP_H_