82 строки
3.0 KiB
C
82 строки
3.0 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, ex_q16, integration, ACCT_STR_NAME) \
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generic_decode_(r, model, 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][CDF_SIZE(16)];
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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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/* Initialize a CDF for use by aom_write_symbol_pvq()/aom_read_symbol_pvq().
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This is used for CDFs whose size might not match the declared array size.
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The only real requirement is that the first value of every CDF be zero.
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Then aom_cdf_init_q15_1D() will be called with the real size the first time
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the CDF is used. */
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#define OD_CDFS_INIT_DYNAMIC(cdf) (memset(cdf, 0, sizeof(cdf)))
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// WARNING: DO NOT USE this init function,
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// if the size of cdf is different from what is declared by code.
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#define OD_CDFS_INIT_Q15(cdfs) \
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{ int n_cdfs = sizeof(cdfs)/sizeof(cdfs[0]); \
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int cdf_size = sizeof(cdfs[0])/sizeof(cdfs[0][0]); \
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int nsyms = cdf_size - CONFIG_EC_ADAPT; \
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int i_; \
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for (i_ = 0; i_ < n_cdfs; i_++) \
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aom_cdf_init_q15_1D(cdfs[i_], nsyms, cdf_size); \
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}
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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_init_q15_1D(uint16_t *cdf, int nsyms, int cdf_size);
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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 generic_encode(aom_writer *w, generic_encoder *model, int x,
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int *ex_q16, int integration);
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double generic_encode_cost(generic_encoder *model, int x, 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,
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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(int *ex_q16, int x, int integration);
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#endif
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