1*c83a76b0SSuyog Pawar /****************************************************************************** 2*c83a76b0SSuyog Pawar * 3*c83a76b0SSuyog Pawar * Copyright (C) 2018 The Android Open Source Project 4*c83a76b0SSuyog Pawar * 5*c83a76b0SSuyog Pawar * Licensed under the Apache License, Version 2.0 (the "License"); 6*c83a76b0SSuyog Pawar * you may not use this file except in compliance with the License. 7*c83a76b0SSuyog Pawar * You may obtain a copy of the License at: 8*c83a76b0SSuyog Pawar * 9*c83a76b0SSuyog Pawar * http://www.apache.org/licenses/LICENSE-2.0 10*c83a76b0SSuyog Pawar * 11*c83a76b0SSuyog Pawar * Unless required by applicable law or agreed to in writing, software 12*c83a76b0SSuyog Pawar * distributed under the License is distributed on an "AS IS" BASIS, 13*c83a76b0SSuyog Pawar * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14*c83a76b0SSuyog Pawar * See the License for the specific language governing permissions and 15*c83a76b0SSuyog Pawar * limitations under the License. 16*c83a76b0SSuyog Pawar * 17*c83a76b0SSuyog Pawar ***************************************************************************** 18*c83a76b0SSuyog Pawar * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19*c83a76b0SSuyog Pawar */ 20*c83a76b0SSuyog Pawar /*! 21*c83a76b0SSuyog Pawar ****************************************************************************** 22*c83a76b0SSuyog Pawar * \file est_sad.h 23*c83a76b0SSuyog Pawar * 24*c83a76b0SSuyog Pawar * \brief 25*c83a76b0SSuyog Pawar * This file contain SAD estimation functions declarations 26*c83a76b0SSuyog Pawar * 27*c83a76b0SSuyog Pawar * \date 28*c83a76b0SSuyog Pawar * 29*c83a76b0SSuyog Pawar * \author 30*c83a76b0SSuyog Pawar * ittiam 31*c83a76b0SSuyog Pawar * 32*c83a76b0SSuyog Pawar ****************************************************************************** 33*c83a76b0SSuyog Pawar */ 34*c83a76b0SSuyog Pawar 35*c83a76b0SSuyog Pawar #ifndef _EST_SAD_H_ 36*c83a76b0SSuyog Pawar #define _EST_SAD_H_ 37*c83a76b0SSuyog Pawar 38*c83a76b0SSuyog Pawar /* "est_sad_t->i4_use_est_intra_sad" Flag to control how the I frame SAD is estimated. 39*c83a76b0SSuyog Pawar If set to zero 40*c83a76b0SSuyog Pawar - it uses the Intra sad calculated by the previous P frame as 41*c83a76b0SSuyog Pawar the estimated sad for the current I frame 42*c83a76b0SSuyog Pawar else 43*c83a76b0SSuyog Pawar - it uses the ratio of P frame sads of the previous two GOPS and 44*c83a76b0SSuyog Pawar scales the I Frame sad with this ratio to estimate the current 45*c83a76b0SSuyog Pawar I frame SAD 46*c83a76b0SSuyog Pawar */ 47*c83a76b0SSuyog Pawar 48*c83a76b0SSuyog Pawar /* Estimating the Average SAD for the current picture type is done by: 49*c83a76b0SSuyog Pawar 1) if picture_type is I 50*c83a76b0SSuyog Pawar - Estimated SAD = (n-1)th intra frame interval(ifi) P frame Avg SAD * 51*c83a76b0SSuyog Pawar ( prev I frame SAD / (n-2)nd intra frame interval(ifi) P frame Avg SAD) 52*c83a76b0SSuyog Pawar - if only one IFI is encoded use the previous I frame SAD 53*c83a76b0SSuyog Pawar 2) if picture type is P 54*c83a76b0SSuyog Pawar - Estimate SAD is previous P frame SAD 55*c83a76b0SSuyog Pawar 3) The first P frame in a IFI could use a little better logic to decide the 56*c83a76b0SSuyog Pawar estimated SAD but currently we assume the last coded P frames SAD */ 57*c83a76b0SSuyog Pawar 58*c83a76b0SSuyog Pawar /*****************************************************************************/ 59*c83a76b0SSuyog Pawar /* Structure */ 60*c83a76b0SSuyog Pawar /*****************************************************************************/ 61*c83a76b0SSuyog Pawar typedef struct est_sad_t *est_sad_handle; 62*c83a76b0SSuyog Pawar 63*c83a76b0SSuyog Pawar /*****************************************************************************/ 64*c83a76b0SSuyog Pawar /* Function Declarations */ 65*c83a76b0SSuyog Pawar /*****************************************************************************/ 66*c83a76b0SSuyog Pawar WORD32 est_sad_num_fill_use_free_memtab( 67*c83a76b0SSuyog Pawar est_sad_handle *est_sad, itt_memtab_t *ps_memtab, ITT_FUNC_TYPE_E e_func_type); 68*c83a76b0SSuyog Pawar 69*c83a76b0SSuyog Pawar void init_est_sad(est_sad_handle est_sad, WORD32 i4_use_est_frame_sad); 70*c83a76b0SSuyog Pawar 71*c83a76b0SSuyog Pawar UWORD32 get_est_sad(est_sad_handle est_sad, picture_type_e e_pic_type); 72*c83a76b0SSuyog Pawar 73*c83a76b0SSuyog Pawar void update_actual_sad(est_sad_handle est_sad, UWORD32 u4_actual_sad, picture_type_e e_pic_type); 74*c83a76b0SSuyog Pawar 75*c83a76b0SSuyog Pawar void update_actual_sad_for_intra(est_sad_handle est_sad, WORD32 i4_intra_frm_cost); 76*c83a76b0SSuyog Pawar 77*c83a76b0SSuyog Pawar void update_prev_frame_intra_sad(est_sad_handle ps_est_sad, WORD32 i4_intra_frm_sad); 78*c83a76b0SSuyog Pawar 79*c83a76b0SSuyog Pawar WORD32 get_prev_frame_intra_sad(est_sad_handle ps_est_sad); 80*c83a76b0SSuyog Pawar 81*c83a76b0SSuyog Pawar void update_prev_frame_sad(est_sad_handle ps_est_sad, WORD32 i4_frm_sad, picture_type_e e_pic_type); 82*c83a76b0SSuyog Pawar 83*c83a76b0SSuyog Pawar WORD32 get_prev_frame_sad(est_sad_handle ps_est_sad, picture_type_e e_pic_type); 84*c83a76b0SSuyog Pawar 85*c83a76b0SSuyog Pawar void reset_est_sad(est_sad_handle ps_est_sad); 86*c83a76b0SSuyog Pawar 87*c83a76b0SSuyog Pawar WORD32 update_ppic_sad(est_sad_handle est_sad, WORD32 i4_est_sad, WORD32 i4_prev_p_sad); 88*c83a76b0SSuyog Pawar #endif 89