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99 lines
4.9 KiB
99 lines
4.9 KiB
/******************************************************************************
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*
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* Copyright (C) 2015 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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/* File Name : irc_rd_model.h */
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/* */
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/* Description : Implements all the Functions to Model the */
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/* Rate Distortion Behaviour of the Codec over the Last */
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/* Few Frames. */
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/* */
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/* List of Functions : irc_update_frame_rd_model */
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/* estimate_mpeg2_qp_for_resbits */
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/* update_mb_rd_model */
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/* find_model_coeffs */
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/* refine_set_of_points */
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/* init_mb_rd_model */
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/* irc_add_frame_to_rd_model */
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/* irc_find_qp_for_target_bits */
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/* */
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/* */
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/* Issues / Problems : None */
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/* */
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/* Revision History : */
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/* DD MM YYYY Author(s) Changes (Describe the changes made) */
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/* 21 06 2006 Sarat Initial Version */
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/*****************************************************************************/
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#ifndef RC_RD_MODEL
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#define RC_RD_MODEL
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#define MAX_FRAMES_MODELLED 16
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typedef float model_coeff;
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typedef struct rc_rd_model_t *rc_rd_model_handle;
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WORD32 irc_rd_model_num_fill_use_free_memtab(rc_rd_model_handle *pps_rc_rd_model,
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itt_memtab_t *ps_memtab,
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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 irc_init_frm_rc_rd_model(rc_rd_model_handle ps_rd_model,
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UWORD8 u1_max_frames_modelled);
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/* Reset the rate distortion model */
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void irc_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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UWORD8 irc_find_qp_for_target_bits(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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UWORD8 u1_max_qp,
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UWORD8 u1_min_qp);
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/* Updates the frame level statistics after encoding a frame */
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void irc_add_frame_to_rd_model(rc_rd_model_handle ps_rd_model,
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UWORD32 i4_res_bits,
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UWORD8 u1_avg_mp2qp,
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UWORD32 i4_sad_h264,
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UWORD8 u1_num_skips);
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UWORD32 irc_estimate_bits_for_qp(rc_rd_model_handle ps_rd_model,
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UWORD32 u4_estimated_sad,
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UWORD8 u1_avg_qp);
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/* Get the Linear model coefficient */
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model_coeff irc_get_linear_coefficient(rc_rd_model_handle ps_rd_model);
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WORD32 irc_calc_per_frm_bits(rc_rd_model_handle ps_rd_model,
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UWORD16 *pu2_num_pics_of_a_pic_type,
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UWORD8 *pu1_update_pic_type_model,
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UWORD8 u1_num_pic_types,
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UWORD32 *pu4_num_skip_of_a_pic_type,
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UWORD8 u1_base_pic_type,
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float *pfl_gamma,
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float *pfl_eta,
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UWORD8 u1_curr_pic_type,
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UWORD32 u4_bits_for_sub_gop,
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UWORD32 u4_curr_estimated_sad,
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UWORD8 *pu1_curr_pic_type_qp);
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#endif
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