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