chromium/third_party/libaom/source/libaom/av1/encoder/av1_noise_estimate.c

/*
 * 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.
 */

#include <assert.h>
#include <limits.h>
#include <math.h>

#include "config/aom_dsp_rtcd.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_scale/yv12config.h"
#include "aom/aom_integer.h"
#include "av1/encoder/context_tree.h"
#include "av1/encoder/av1_noise_estimate.h"
#include "av1/encoder/encoder.h"
#if CONFIG_AV1_TEMPORAL_DENOISING
#include "av1/encoder/av1_temporal_denoiser.h"
#endif

#if CONFIG_AV1_TEMPORAL_DENOISING
// For SVC: only do noise estimation on top spatial layer.
static inline int noise_est_svc(const struct AV1_COMP *const cpi) { … }
#endif

void av1_noise_estimate_init(NOISE_ESTIMATE *const ne, int width, int height) { … }

static int enable_noise_estimation(AV1_COMP *const cpi) { … }

#if CONFIG_AV1_TEMPORAL_DENOISING
static void copy_frame(YV12_BUFFER_CONFIG *const dest,
                       const YV12_BUFFER_CONFIG *const src) { … }
#endif  // CONFIG_AV1_TEMPORAL_DENOISING

NOISE_LEVEL av1_noise_estimate_extract_level(NOISE_ESTIMATE *const ne) { … }

void av1_update_noise_estimate(AV1_COMP *const cpi) { … }