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      1 /******************************************************************************
      2  *
      3  * Copyright (C) 2015 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at:
      8  *
      9  * http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  *
     17  *****************************************************************************
     18  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
     19 */
     20 
     21 /**
     22 *******************************************************************************
     23 * @file
     24 *  ih264e_statistics.h
     25 *
     26 * @brief
     27 *  Contains macros for generating stats about h264 encoder
     28 *
     29 * @author
     30 *  ittiam
     31 *
     32 * @remarks
     33 *  None
     34 *
     35 *******************************************************************************
     36 */
     37 
     38 #ifndef IH264E_STATISTICS_H_
     39 #define IH264E_STATISTICS_H_
     40 
     41 #if  CAVLC_LEVEL_STATS
     42 
     43 /*****************************************************************************/
     44 /* Extern global declarations                                                */
     45 /*****************************************************************************/
     46 
     47 /**
     48  ******************************************************************************
     49  * @brief  In cavlc encoding, a lut is used for encoding levels. It is not possible
     50  * to use look up for all possible levels. The extent to which look up is generated
     51  * is based on the statistics that were collected in the following global variables.
     52  *
     53  * gu4_cavlc_level_bin_lt_4 represents the number coefficients with abs(level) < 4
     54  * gu4_cavlc_level_bin_lt_16 represents the number coefficients with 4 < abs(level) < 16
     55  * gu4_cavlc_level_bin_lt_32 represents the number coefficients with 16 < abs(level) < 32
     56  * and so on ...
     57  * ******************************************************************************
     58  */
     59 extern UWORD32 gu4_cavlc_level_bin_lt_4;
     60 extern UWORD32 gu4_cavlc_level_bin_lt_16;
     61 extern UWORD32 gu4_cavlc_level_bin_lt_32;
     62 extern UWORD32 gu4_cavlc_level_bin_lt_64;
     63 extern UWORD32 gu4_cavlc_level_bin_lt_128;
     64 extern UWORD32 gu4_cavlc_level_bin_else_where;
     65 extern UWORD32 gu4_cavlc_level_lut_hit_rate;
     66 
     67 /*****************************************************************************/
     68 /* Extern function declarations                                              */
     69 /*****************************************************************************/
     70 
     71 /**
     72 ******************************************************************************
     73 *  @brief print cavlc stats
     74 ******************************************************************************
     75 */
     76 void print_cavlc_level_stats(void);
     77 
     78 #define GATHER_CAVLC_STATS1() \
     79     if (u4_abs_level < 4)\
     80         gu4_cavlc_level_bin_lt_4 ++; \
     81     else if  (u4_abs_level < 16) \
     82         gu4_cavlc_level_bin_lt_16 ++; \
     83     else if  (u4_abs_level < 32) \
     84         gu4_cavlc_level_bin_lt_32 ++; \
     85     else if  (u4_abs_level < 64) \
     86         gu4_cavlc_level_bin_lt_64 ++; \
     87     else if  (u4_abs_level < 128) \
     88         gu4_cavlc_level_bin_lt_128 ++; \
     89     else \
     90         gu4_cavlc_level_bin_else_where ++;
     91 
     92 #define GATHER_CAVLC_STATS2() \
     93                 gu4_cavlc_level_lut_hit_rate ++;
     94 
     95 #else
     96 
     97 #define GATHER_CAVLC_STATS1()
     98 
     99 #define GATHER_CAVLC_STATS2()
    100 
    101 #endif
    102 
    103 
    104 #if  GATING_STATS
    105 
    106 /*****************************************************************************/
    107 /* Extern global declarations                                                */
    108 /*****************************************************************************/
    109 
    110 /**
    111 ******************************************************************************
    112 * @brief  During encoding at fastest preset, some times if the inter threshold
    113 * is lesser than the predefined threshold, intra analysis is not done. The
    114 * below variable keeps track of the number of mb for which intra analysis is not
    115 * done
    116 * ******************************************************************************
    117 */
    118 extern UWORD32 gu4_mb_gated_cnt;
    119 
    120 /*****************************************************************************/
    121 /* Extern function declarations                                              */
    122 /*****************************************************************************/
    123 
    124 /**
    125 ******************************************************************************
    126 *  @brief print gating stats
    127 ******************************************************************************
    128 */
    129 void print_gating_stats(void);
    130 
    131 #define GATHER_GATING_STATS() \
    132         gu4_mb_gated_cnt ++;
    133 
    134 #else
    135 
    136 #define GATHER_GATING_STATS()
    137 
    138 #endif
    139 
    140 
    141 #endif /* IH264E_STATISTICS_H_ */
    142