84 строки
2.9 KiB
C
84 строки
2.9 KiB
C
/*
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* Copyright (c) 2001-2016, 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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/* clang-format off */
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#if !defined(_generic_code_H)
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# define _generic_code_H
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# include "aom_dsp/bitreader.h"
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# include "aom_dsp/bitwriter.h"
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# define GENERIC_TABLES 12
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#define generic_decode(r, model, max, ex_q16, integration, ACCT_STR_NAME) \
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generic_decode_(r, model, max, ex_q16, integration ACCT_STR_ARG(ACCT_STR_NAME))
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#define aom_decode_cdf_adapt_q15(r, cdf, n, count, rate, ACCT_STR_NAME) \
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aom_decode_cdf_adapt_q15_(r, cdf, n, count, rate ACCT_STR_ARG(ACCT_STR_NAME))
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#define aom_decode_cdf_adapt(r, cdf, n, increment, ACCT_STR_NAME) \
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aom_decode_cdf_adapt_(r, cdf, n, increment ACCT_STR_ARG(ACCT_STR_NAME))
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typedef struct {
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/** cdf for multiple expectations of x */
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uint16_t cdf[GENERIC_TABLES][16];
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/** Frequency increment for learning the cdfs */
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int increment;
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} generic_encoder;
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#define OD_IIR_DIADIC(y, x, shift) ((y) += ((x) - (y)) >> (shift))
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void generic_model_init(generic_encoder *model);
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#define OD_CDFS_INIT(cdf, val) aom_cdf_init(&cdf[0][0], \
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sizeof(cdf)/sizeof(cdf[0]), sizeof(cdf[0])/sizeof(cdf[0][0]), val, val)
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#define OD_CDFS_INIT_FIRST(cdf, val, first) aom_cdf_init(&cdf[0][0], \
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sizeof(cdf)/sizeof(cdf[0]), sizeof(cdf[0])/sizeof(cdf[0][0]), val, first)
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#define OD_SINGLE_CDF_INIT(cdf, val) aom_cdf_init(cdf, \
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1, sizeof(cdf)/sizeof(cdf[0]), val, val)
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#define OD_SINGLE_CDF_INIT_FIRST(cdf, val, first) aom_cdf_init(cdf, \
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1, sizeof(cdf)/sizeof(cdf[0]), val, first)
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void aom_cdf_init(uint16_t *cdf, int ncdfs, int nsyms, int val, int first);
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void aom_cdf_adapt_q15(int val, uint16_t *cdf, int n, int *count, int rate);
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void aom_encode_cdf_adapt_q15(aom_writer *w, int val, uint16_t *cdf, int n,
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int *count, int rate);
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void aom_encode_cdf_adapt(aom_writer *w, int val, uint16_t *cdf, int n,
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int increment);
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int aom_decode_cdf_adapt_(aom_reader *r, uint16_t *cdf, int n,
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int increment ACCT_STR_PARAM);
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void generic_encode(aom_writer *w, generic_encoder *model, int x, int max,
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int *ex_q16, int integration);
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double generic_encode_cost(generic_encoder *model, int x, int max,
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int *ex_q16);
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double od_encode_cdf_cost(int val, uint16_t *cdf, int n);
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int aom_decode_cdf_adapt_q15_(aom_reader *r, uint16_t *cdf, int n,
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int *count, int rate ACCT_STR_PARAM);
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int generic_decode_(aom_reader *r, generic_encoder *model, int max,
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int *ex_q16, int integration ACCT_STR_PARAM);
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int log_ex(int ex_q16);
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void generic_model_update(generic_encoder *model, int *ex_q16, int x, int xs,
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int id, int integration);
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#endif
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