From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/aom/av1/encoder/cost.h | 47 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 third_party/aom/av1/encoder/cost.h (limited to 'third_party/aom/av1/encoder/cost.h') diff --git a/third_party/aom/av1/encoder/cost.h b/third_party/aom/av1/encoder/cost.h new file mode 100644 index 0000000000..af5b098370 --- /dev/null +++ b/third_party/aom/av1/encoder/cost.h @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2016, 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_COST_H_ +#define AOM_AV1_ENCODER_COST_H_ + +#include "aom_dsp/prob.h" +#include "aom/aom_integer.h" + +#ifdef __cplusplus +extern "C" { +#endif + +extern const uint16_t av1_prob_cost[128]; + +// The factor to scale from cost in bits to cost in av1_prob_cost units. +#define AV1_PROB_COST_SHIFT 9 + +// Cost of coding an n bit literal, using 128 (i.e. 50%) probability +// for each bit. +#define av1_cost_literal(n) ((n) * (1 << AV1_PROB_COST_SHIFT)) + +// Calculate the cost of a symbol with probability p15 / 2^15 +static INLINE int av1_cost_symbol(aom_cdf_prob p15) { + assert(0 < p15 && p15 < CDF_PROB_TOP); + const int shift = CDF_PROB_BITS - 1 - get_msb(p15); + const int prob = get_prob(p15 << shift, CDF_PROB_TOP); + assert(prob >= 128); + return av1_prob_cost[prob - 128] + av1_cost_literal(shift); +} + +void av1_cost_tokens_from_cdf(int *costs, const aom_cdf_prob *cdf, + const int *inv_map); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_ENCODER_COST_H_ -- cgit v1.2.3