/* * 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_DSP_BITREADER_H_ #define AOM_DSP_BITREADER_H_ #include <assert.h> #include <limits.h> #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 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_DSP_BITREADER_H_