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/******************************************************************************
*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
/*****************************************************************************/
/* File Name : irc_rd_model.h */
/* */
/* Description : Implements all the Functions to Model the */
/* Rate Distortion Behaviour of the Codec over the Last */
/* Few Frames. */
/* */
/* List of Functions : irc_update_frame_rd_model */
/* estimate_mpeg2_qp_for_resbits */
/* update_mb_rd_model */
/* find_model_coeffs */
/* refine_set_of_points */
/* init_mb_rd_model */
/* irc_add_frame_to_rd_model */
/* irc_find_qp_for_target_bits */
/* */
/* */
/* Issues / Problems : None */
/* */
/* Revision History : */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 21 06 2006 Sarat Initial Version */
/*****************************************************************************/
#ifndef RC_RD_MODEL
#define RC_RD_MODEL
#define MAX_FRAMES_MODELLED 16
typedef float model_coeff;
typedef struct rc_rd_model_t *rc_rd_model_handle;
WORD32 irc_rd_model_num_fill_use_free_memtab(rc_rd_model_handle *pps_rc_rd_model,
itt_memtab_t *ps_memtab,
ITT_FUNC_TYPE_E e_func_type);
/* Interface Functions */
/* Initialise the rate distortion model */
void irc_init_frm_rc_rd_model(rc_rd_model_handle ps_rd_model,
UWORD8 u1_max_frames_modelled);
/* Reset the rate distortion model */
void irc_reset_frm_rc_rd_model(rc_rd_model_handle ps_rd_model);
/* Returns the Qp to be used for the given bits and SAD */
UWORD8 irc_find_qp_for_target_bits(rc_rd_model_handle ps_rd_model,
UWORD32 u4_target_res_bits,
UWORD32 u4_estimated_sad,
UWORD8 u1_max_qp,
UWORD8 u1_min_qp);
/* Updates the frame level statistics after encoding a frame */
void irc_add_frame_to_rd_model(rc_rd_model_handle ps_rd_model,
UWORD32 i4_res_bits,
UWORD8 u1_avg_mp2qp,
UWORD32 i4_sad_h264,
UWORD8 u1_num_skips);
UWORD32 irc_estimate_bits_for_qp(rc_rd_model_handle ps_rd_model,
UWORD32 u4_estimated_sad,
UWORD8 u1_avg_qp);
/* Get the Linear model coefficient */
model_coeff irc_get_linear_coefficient(rc_rd_model_handle ps_rd_model);
WORD32 irc_calc_per_frm_bits(rc_rd_model_handle ps_rd_model,
UWORD16 *pu2_num_pics_of_a_pic_type,
UWORD8 *pu1_update_pic_type_model,
UWORD8 u1_num_pic_types,
UWORD32 *pu4_num_skip_of_a_pic_type,
UWORD8 u1_base_pic_type,
float *pfl_gamma,
float *pfl_eta,
UWORD8 u1_curr_pic_type,
UWORD32 u4_bits_for_sub_gop,
UWORD32 u4_curr_estimated_sad,
UWORD8 *pu1_curr_pic_type_qp);
#endif
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