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/*
* Copyright (c) 2020, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AV1_ENCODER_AV1_NOISE_ESTIMATE_H_
#define AOM_AV1_ENCODER_AV1_NOISE_ESTIMATE_H_
#include "av1/encoder/block.h"
#include "aom_scale/yv12config.h"
#ifdef __cplusplus
extern "C" {
#endif
#define MAX_VAR_HIST_BINS 20
typedef enum noise_level { kLowLow, kLow, kMedium, kHigh } NOISE_LEVEL;
typedef struct noise_estimate {
int enabled;
NOISE_LEVEL level;
int value;
int thresh;
int adapt_thresh;
int count;
int last_w;
int last_h;
int num_frames_estimate;
} NOISE_ESTIMATE;
struct AV1_COMP;
void av1_noise_estimate_init(NOISE_ESTIMATE *const ne, int width, int height);
NOISE_LEVEL av1_noise_estimate_extract_level(NOISE_ESTIMATE *const ne);
void av1_update_noise_estimate(struct AV1_COMP *const cpi);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_ENCODER_AV1_NOISE_ESTIMATE_H_