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      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_H_
     13 #define AOM_AOM_DSP_BITWRITER_H_
     14 
     15 #include <assert.h>
     16 
     17 #include "config/aom_config.h"
     18 
     19 #include "aom_dsp/daalaboolwriter.h"
     20 #include "aom_dsp/prob.h"
     21 
     22 #if CONFIG_RD_DEBUG
     23 #include "av1/common/blockd.h"
     24 #include "av1/encoder/cost.h"
     25 #endif
     26 
     27 #ifdef __cplusplus
     28 extern "C" {
     29 #endif
     30 
     31 typedef struct daala_writer aom_writer;
     32 
     33 typedef struct TOKEN_STATS {
     34   int cost;
     35 #if CONFIG_RD_DEBUG
     36   int txb_coeff_cost_map[TXB_COEFF_COST_MAP_SIZE][TXB_COEFF_COST_MAP_SIZE];
     37 #endif
     38 } TOKEN_STATS;
     39 
     40 static INLINE void init_token_stats(TOKEN_STATS *token_stats) {
     41 #if CONFIG_RD_DEBUG
     42   int r, c;
     43   for (r = 0; r < TXB_COEFF_COST_MAP_SIZE; ++r) {
     44     for (c = 0; c < TXB_COEFF_COST_MAP_SIZE; ++c) {
     45       token_stats->txb_coeff_cost_map[r][c] = 0;
     46     }
     47   }
     48 #endif
     49   token_stats->cost = 0;
     50 }
     51 
     52 static INLINE void aom_start_encode(aom_writer *bc, uint8_t *buffer) {
     53   aom_daala_start_encode(bc, buffer);
     54 }
     55 
     56 static INLINE int aom_stop_encode(aom_writer *bc) {
     57   return aom_daala_stop_encode(bc);
     58 }
     59 
     60 static INLINE void aom_write(aom_writer *br, int bit, int probability) {
     61   aom_daala_write(br, bit, probability);
     62 }
     63 
     64 static INLINE void aom_write_bit(aom_writer *w, int bit) {
     65   aom_write(w, bit, 128);  // aom_prob_half
     66 }
     67 
     68 static INLINE void aom_write_literal(aom_writer *w, int data, int bits) {
     69   int bit;
     70 
     71   for (bit = bits - 1; bit >= 0; bit--) aom_write_bit(w, 1 & (data >> bit));
     72 }
     73 
     74 static INLINE void aom_write_cdf(aom_writer *w, int symb,
     75                                  const aom_cdf_prob *cdf, int nsymbs) {
     76   daala_write_symbol(w, symb, cdf, nsymbs);
     77 }
     78 
     79 static INLINE void aom_write_symbol(aom_writer *w, int symb, aom_cdf_prob *cdf,
     80                                     int nsymbs) {
     81   aom_write_cdf(w, symb, cdf, nsymbs);
     82   if (w->allow_update_cdf) update_cdf(cdf, symb, nsymbs);
     83 }
     84 
     85 #ifdef __cplusplus
     86 }  // extern "C"
     87 #endif
     88 
     89 #endif  // AOM_AOM_DSP_BITWRITER_H_
     90