bitreader_buffer.h 1.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10
/*
 *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

11 12
#ifndef VPX_DSP_BITREADER_BUFFER_H_
#define VPX_DSP_BITREADER_BUFFER_H_
13

14 15 16 17
#include <limits.h>

#include "vpx/vpx_integer.h"

18 19 20 21
#ifdef __cplusplus
extern "C" {
#endif

22
typedef void (*vpx_rb_error_handler)(void *data);
23

Yaowu Xu's avatar
Yaowu Xu committed
24
struct vpx_read_bit_buffer {
25 26 27 28 29
  const uint8_t *bit_buffer;
  const uint8_t *bit_buffer_end;
  size_t bit_offset;

  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 42
int vpx_rb_read_inv_signed_literal(struct vpx_read_bit_buffer *rb, int bits);

43 44 45 46
#ifdef __cplusplus
}  // extern "C"
#endif

47
#endif  // VPX_DSP_BITREADER_BUFFER_H_