aom_dsp/bitreader_buffer.h

/*
 *  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.
 */

#ifndef AOM_DSP_BITREADER_BUFFER_H_
#define AOM_DSP_BITREADER_BUFFER_H_

#include <limits.h>

#include "aom/aom_integer.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef void (*aom_rb_error_handler)(void *data);

struct aom_read_bit_buffer {
  const uint8_t *bit_buffer;
  const uint8_t *bit_buffer_end;
  size_t bit_offset;

  void *error_handler_data;
  aom_rb_error_handler error_handler;
};

size_t aom_rb_bytes_read(struct aom_read_bit_buffer *rb);

int aom_rb_read_bit(struct aom_read_bit_buffer *rb);

int aom_rb_read_literal(struct aom_read_bit_buffer *rb, int bits);

int aom_rb_read_signed_literal(struct aom_read_bit_buffer *rb, int bits);

int aom_rb_read_inv_signed_literal(struct aom_read_bit_buffer *rb, int bits);

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // AOM_DSP_BITREADER_BUFFER_H_