1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #ifndef AOM_AOM_DSP_BITREADER_BUFFER_H_ 13 #define AOM_AOM_DSP_BITREADER_BUFFER_H_ 14 15 #include <limits.h> 16 17 #include "aom/aom_integer.h" 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 typedef void (*aom_rb_error_handler)(void *data); 24 25 struct aom_read_bit_buffer { 26 const uint8_t *bit_buffer; 27 const uint8_t *bit_buffer_end; 28 uint32_t bit_offset; 29 30 void *error_handler_data; 31 aom_rb_error_handler error_handler; 32 }; 33 34 size_t aom_rb_bytes_read(const struct aom_read_bit_buffer *rb); 35 36 int aom_rb_read_bit(struct aom_read_bit_buffer *rb); 37 38 int aom_rb_read_literal(struct aom_read_bit_buffer *rb, int bits); 39 40 uint32_t aom_rb_read_unsigned_literal(struct aom_read_bit_buffer *rb, int bits); 41 42 int aom_rb_read_inv_signed_literal(struct aom_read_bit_buffer *rb, int bits); 43 44 uint32_t aom_rb_read_uvlc(struct aom_read_bit_buffer *rb); 45 46 int16_t aom_rb_read_signed_primitive_refsubexpfin( 47 struct aom_read_bit_buffer *rb, uint16_t n, uint16_t k, int16_t ref); 48 49 #ifdef __cplusplus 50 } // extern "C" 51 #endif 52 53 #endif // AOM_AOM_DSP_BITREADER_BUFFER_H_ 54
