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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 #ifndef RC_RD_MODEL_STRUCT
     22 #define RC_RD_MODEL_STRUCT
     23 
     24 /*Enable or diable QUAD model*/
     25 #define ENABLE_QUAD_RC_MODEL       0
     26 #define ENABLE_LIN_MODEL_WITH_INTERCEPT  0
     27 
     28 /* Number of elements for QP */
     29 #define MPEG2_QP_ELEM       (MAX_MPEG2_QP + 1)
     30 
     31 
     32 #if ENABLE_QUAD_RC_MODEL
     33 #define QUAD                       1
     34 #define MIN_FRAMES_FOR_QUAD_MODEL  5
     35 #endif
     36 
     37 #define MAX_ACTIVE_FRAMES          16
     38 #define MIN_FRAMES_FOR_LIN_MODEL   3
     39 #define INVALID_FRAME_INDEX        255
     40 
     41 #define UP_THR_SM           1  /* (1  /pow(2,4) = 0.0625   */
     42 #define UP_THR_E            4
     43 
     44 #define LO_THR_SM           368  /* (368.64 / pow(2,14)) = 0.0225 */
     45 #define LO_THR_E            14
     46 
     47 #define LIN_DEV_THR_SM     1  /* (1 / pow(1,2)) = .25*/
     48 #define LIN_DEV_THR_E      2
     49 
     50 #define PREV_FRAME_MODEL    2
     51 
     52 /* Q Factors used for fixed point calculation */
     53 #define Q_FORMAT_GAMMA  8
     54 #define Q_FORMAT_ETA    8
     55 
     56 typedef struct rc_rd_model_t
     57 {
     58     UWORD8 u1_curr_frm_counter;
     59     UWORD8 u1_num_frms_in_model;
     60     UWORD8 u1_max_frms_to_model;
     61     UWORD8 u1_model_used;
     62 
     63     UWORD32 pi4_res_bits[MAX_FRAMES_MODELLED];
     64     UWORD32 pi4_sad[MAX_FRAMES_MODELLED];
     65 
     66     UWORD8 pu1_num_skips[MAX_FRAMES_MODELLED];
     67     UWORD8 pu1_avg_qp[MAX_FRAMES_MODELLED];
     68     UWORD8 au1_num_frames[MPEG2_QP_ELEM];
     69 
     70     model_coeff model_coeff_a_lin_wo_int;
     71     model_coeff model_coeff_b_lin_wo_int;
     72     model_coeff model_coeff_c_lin_wo_int;
     73 } rc_rd_model_t;
     74 
     75 #endif /* RC_RD_MODEL_STRUCT */
     76