1 /* 2 * Copyright (c) 2013 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef VPX_DSP_BITREADER_BUFFER_H_ 12 #define VPX_DSP_BITREADER_BUFFER_H_ 13 14 #include <limits.h> 15 16 #include "vpx/vpx_integer.h" 17 18 #ifdef __cplusplus 19 extern "C" { 20 #endif 21 22 typedef void (*vpx_rb_error_handler)(void *data); 23 24 struct vpx_read_bit_buffer { 25 const uint8_t *bit_buffer; 26 const uint8_t *bit_buffer_end; 27 size_t bit_offset; 28 29 void *error_handler_data; 30 vpx_rb_error_handler error_handler; 31 }; 32 33 size_t vpx_rb_bytes_read(struct vpx_read_bit_buffer *rb); 34 35 int vpx_rb_read_bit(struct vpx_read_bit_buffer *rb); 36 37 int vpx_rb_read_literal(struct vpx_read_bit_buffer *rb, int bits); 38 39 int vpx_rb_read_signed_literal(struct vpx_read_bit_buffer *rb, int bits); 40 41 int vpx_rb_read_inv_signed_literal(struct vpx_read_bit_buffer *rb, int bits); 42 43 #ifdef __cplusplus 44 } // extern "C" 45 #endif 46 47 #endif // VPX_DSP_BITREADER_BUFFER_H_ 48
