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/aom_dsp/bitreader.h | 160 ++++++++++++++++++++++++++++++++++++ 1 file changed, 160 insertions(+) create mode 100644 third_party/aom/aom_dsp/bitreader.h (limited to 'third_party/aom/aom_dsp/bitreader.h') diff --git a/third_party/aom/aom_dsp/bitreader.h b/third_party/aom/aom_dsp/bitreader.h new file mode 100644 index 0000000000..7c0efcc785 --- /dev/null +++ b/third_party/aom/aom_dsp/bitreader.h @@ -0,0 +1,160 @@ +/* + * 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_AOM_DSP_BITREADER_H_ +#define AOM_AOM_DSP_BITREADER_H_ + +#include +#include + +#include "config/aom_config.h" + +#include "aom/aomdx.h" +#include "aom/aom_integer.h" +#include "aom_dsp/daalaboolreader.h" +#include "aom_dsp/prob.h" +#include "av1/common/odintrin.h" + +#if CONFIG_ACCOUNTING +#include "av1/decoder/accounting.h" +#define ACCT_STR_NAME acct_str +#define ACCT_STR_PARAM , const char *ACCT_STR_NAME +#define ACCT_STR_ARG(s) , s +#else +#define ACCT_STR_PARAM +#define ACCT_STR_ARG(s) +#endif + +#define aom_read(r, prob, ACCT_STR_NAME) \ + aom_read_(r, prob ACCT_STR_ARG(ACCT_STR_NAME)) +#define aom_read_bit(r, ACCT_STR_NAME) \ + aom_read_bit_(r ACCT_STR_ARG(ACCT_STR_NAME)) +#define aom_read_tree(r, tree, probs, ACCT_STR_NAME) \ + aom_read_tree_(r, tree, probs ACCT_STR_ARG(ACCT_STR_NAME)) +#define aom_read_literal(r, bits, ACCT_STR_NAME) \ + aom_read_literal_(r, bits ACCT_STR_ARG(ACCT_STR_NAME)) +#define aom_read_cdf(r, cdf, nsymbs, ACCT_STR_NAME) \ + aom_read_cdf_(r, cdf, nsymbs ACCT_STR_ARG(ACCT_STR_NAME)) +#define aom_read_symbol(r, cdf, nsymbs, ACCT_STR_NAME) \ + aom_read_symbol_(r, cdf, nsymbs ACCT_STR_ARG(ACCT_STR_NAME)) + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct daala_reader aom_reader; + +static INLINE int aom_reader_init(aom_reader *r, const uint8_t *buffer, + size_t size) { + return aom_daala_reader_init(r, buffer, (int)size); +} + +static INLINE const uint8_t *aom_reader_find_begin(aom_reader *r) { + return aom_daala_reader_find_begin(r); +} + +static INLINE const uint8_t *aom_reader_find_end(aom_reader *r) { + return aom_daala_reader_find_end(r); +} + +static INLINE int aom_reader_has_error(aom_reader *r) { + return aom_daala_reader_has_error(r); +} + +// Returns true if the bit reader has tried to decode more data from the buffer +// than was actually provided. +static INLINE int aom_reader_has_overflowed(const aom_reader *r) { + return aom_daala_reader_has_overflowed(r); +} + +// Returns the position in the bit reader in bits. +static INLINE uint32_t aom_reader_tell(const aom_reader *r) { + return aom_daala_reader_tell(r); +} + +// Returns the position in the bit reader in 1/8th bits. +static INLINE uint32_t aom_reader_tell_frac(const aom_reader *r) { + return aom_daala_reader_tell_frac(r); +} + +#if CONFIG_ACCOUNTING +static INLINE void aom_process_accounting(const aom_reader *r ACCT_STR_PARAM) { + if (r->accounting != NULL) { + uint32_t tell_frac; + tell_frac = aom_reader_tell_frac(r); + aom_accounting_record(r->accounting, ACCT_STR_NAME, + tell_frac - r->accounting->last_tell_frac); + r->accounting->last_tell_frac = tell_frac; + } +} + +static INLINE void aom_update_symb_counts(const aom_reader *r, int is_binary) { + if (r->accounting != NULL) { + r->accounting->syms.num_multi_syms += !is_binary; + r->accounting->syms.num_binary_syms += !!is_binary; + } +} +#endif + +static INLINE int aom_read_(aom_reader *r, int prob ACCT_STR_PARAM) { + int ret; + ret = aom_daala_read(r, prob); +#if CONFIG_ACCOUNTING + if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME); + aom_update_symb_counts(r, 1); +#endif + return ret; +} + +static INLINE int aom_read_bit_(aom_reader *r ACCT_STR_PARAM) { + int ret; + ret = aom_read(r, 128, NULL); // aom_prob_half +#if CONFIG_ACCOUNTING + if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME); +#endif + return ret; +} + +static INLINE int aom_read_literal_(aom_reader *r, int bits ACCT_STR_PARAM) { + int literal = 0, bit; + + for (bit = bits - 1; bit >= 0; bit--) literal |= aom_read_bit(r, NULL) << bit; +#if CONFIG_ACCOUNTING + if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME); +#endif + return literal; +} + +static INLINE int aom_read_cdf_(aom_reader *r, const aom_cdf_prob *cdf, + int nsymbs ACCT_STR_PARAM) { + int ret; + ret = daala_read_symbol(r, cdf, nsymbs); + +#if CONFIG_ACCOUNTING + if (ACCT_STR_NAME) aom_process_accounting(r, ACCT_STR_NAME); + aom_update_symb_counts(r, (nsymbs == 2)); +#endif + return ret; +} + +static INLINE int aom_read_symbol_(aom_reader *r, aom_cdf_prob *cdf, + int nsymbs ACCT_STR_PARAM) { + int ret; + ret = aom_read_cdf(r, cdf, nsymbs, ACCT_STR_NAME); + if (r->allow_update_cdf) update_cdf(cdf, ret, nsymbs); + return ret; +} + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AOM_DSP_BITREADER_H_ -- cgit v1.2.3