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88 lines
3.1 KiB
88 lines
3.1 KiB
4 months ago
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/******************************************************************************
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*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/*!
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******************************************************************************
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* \file rc_rd_model.h
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*
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* \brief
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* This file contains all the necessary declarations for
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* Rate Distortion related functions
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*
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* \date
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*
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* \author
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* ittiam
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*
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******************************************************************************
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*/
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#ifndef RC_RD_MODEL
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#define RC_RD_MODEL
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/*****************************************************************************/
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/* Constant Macros */
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/*****************************************************************************/
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#define RC_FIXED_POINT 1
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#define MAX_FRAMES_MODELLED 16
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#if !RC_FIXED_POINT
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typedef float model_coeff;
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#else
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typedef number_t model_coeff;
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#endif
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typedef struct rc_rd_model_t *rc_rd_model_handle;
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/*****************************************************************************/
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/* Function Declarations */
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/*****************************************************************************/
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WORD32 rc_rd_model_num_fill_use_free_memtab(
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rc_rd_model_handle *pps_rc_rd_model, itt_memtab_t *ps_memtab, ITT_FUNC_TYPE_E e_func_type);
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/* Interface Functions */
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/* Initialise the rate distortion model */
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void init_frm_rc_rd_model(rc_rd_model_handle ps_rd_model, UWORD8 u1_max_frames_modelled);
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/* Reset the rate distortion model */
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void reset_frm_rc_rd_model(rc_rd_model_handle ps_rd_model);
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/* Returns the Qp to be used for the given bits and SAD */
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WORD32 find_qp_for_target_bits(
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rc_rd_model_handle ps_rd_model,
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UWORD32 u4_target_res_bits,
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UWORD32 u4_estimated_sad,
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WORD32 i4_max_qp_q6,
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WORD32 i4_min_qp_q6);
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/* Updates the frame level statistics after encoding a frame */
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void add_frame_to_rd_model(
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rc_rd_model_handle ps_rd_model,
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UWORD32 i4_res_bits,
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WORD32 i4_avg_mp2qp_q6,
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LWORD64 i8_sad_h264,
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UWORD8 u1_num_skips);
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UWORD32 estimate_bits_for_qp(
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rc_rd_model_handle ps_rd_model, UWORD32 u4_estimated_sad, WORD32 i4_avg_qp_q6);
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/* Get the Linear model coefficient */
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model_coeff get_linear_coefficient(rc_rd_model_handle ps_rd_model);
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void set_linear_coefficient(rc_rd_model_handle ps_rd_model, number_t model_coeff_a_lin_wo_int);
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WORD32 is_model_valid(rc_rd_model_handle ps_rd_model);
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#endif
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