aom_dsp/bitwriter_buffer.h

   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_BITWRITER_BUFFER_H_
  13 #define AOM_AOM_DSP_BITWRITER_BUFFER_H_
  14
  15 #include "aom/aom_integer.h"
  16
  17 #ifdef __cplusplus
  18 extern "C" {
  19 #endif
  20
  21 struct aom_write_bit_buffer {
  22   uint8_t *bit_buffer;
  23   uint32_t bit_offset;
  24 };
  25
  26 int aom_wb_is_byte_aligned(const struct aom_write_bit_buffer *wb);
  27
  28 uint32_t aom_wb_bytes_written(const struct aom_write_bit_buffer *wb);
  29
  30 void aom_wb_write_bit(struct aom_write_bit_buffer *wb, int bit);
  31
  32 void aom_wb_overwrite_bit(struct aom_write_bit_buffer *wb, int bit);
  33
  34 void aom_wb_write_literal(struct aom_write_bit_buffer *wb, int data, int bits);
  35
  36 void aom_wb_write_unsigned_literal(struct aom_write_bit_buffer *wb,
  37                                    uint32_t data, int bits);
  38
  39 void aom_wb_overwrite_literal(struct aom_write_bit_buffer *wb, int data,
  40                               int bits);
  41
  42 void aom_wb_write_inv_signed_literal(struct aom_write_bit_buffer *wb, int data,
  43                                      int bits);
  44
  45 void aom_wb_write_uvlc(struct aom_write_bit_buffer *wb, uint32_t v);
  46
  47 void aom_wb_write_signed_primitive_refsubexpfin(struct aom_write_bit_buffer *wb,
  48                                                 uint16_t n, uint16_t k,
  49                                                 int16_t ref, int16_t v);
  50
  51 #ifdef __cplusplus
  52 }  // extern "C"
  53 #endif
  54
  55 #endif  // AOM_AOM_DSP_BITWRITER_BUFFER_H_