/******************************************************************************
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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 ihevce_sub_pic_rc.c
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*
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* \brief
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*
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* \date
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* 18/09/2012
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*
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* \author
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* Ittiam
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*
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* List of Functions
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*
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******************************************************************************
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*/
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/*****************************************************************************/
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/* File Includes */
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/*****************************************************************************/
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/* System include files */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <stdarg.h>
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#include <math.h>
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/* User include files */
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#include "ihevc_typedefs.h"
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#include "itt_video_api.h"
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#include "ihevce_api.h"
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#include "rc_cntrl_param.h"
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#include "rc_frame_info_collector.h"
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#include "rc_look_ahead_params.h"
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#include "ihevc_defs.h"
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#include "ihevc_debug.h"
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#include "ihevc_structs.h"
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#include "ihevc_platform_macros.h"
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#include "ihevc_deblk.h"
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#include "ihevc_itrans_recon.h"
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#include "ihevc_chroma_itrans_recon.h"
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#include "ihevc_chroma_intra_pred.h"
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#include "ihevc_intra_pred.h"
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#include "ihevc_inter_pred.h"
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#include "ihevc_mem_fns.h"
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#include "ihevc_padding.h"
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#include "ihevc_weighted_pred.h"
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#include "ihevc_sao.h"
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#include "ihevc_resi_trans.h"
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#include "ihevc_quant_iquant_ssd.h"
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#include "ihevc_cabac_tables.h"
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|
#include "ihevce_defs.h"
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#include "ihevce_buffer_que_interface.h"
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#include "ihevce_hle_interface.h"
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#include "ihevce_hle_q_func.h"
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#include "ihevce_lap_enc_structs.h"
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#include "ihevce_multi_thrd_structs.h"
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#include "ihevce_me_common_defs.h"
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#include "ihevce_had_satd.h"
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#include "ihevce_error_checks.h"
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#include "ihevce_error_codes.h"
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#include "ihevce_bitstream.h"
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#include "ihevce_cabac.h"
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#include "ihevce_trace.h"
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#include "ihevce_function_selector.h"
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#include "ihevce_enc_structs.h"
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#include "ihevce_global_tables.h"
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#include "ihevce_cmn_utils_instr_set_router.h"
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#include "ihevce_rdoq_macros.h"
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#include "ihevce_entropy_structs.h"
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#include "ihevce_entropy_interface.h"
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#include "ihevce_enc_loop_structs.h"
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#include "hme_datatype.h"
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#include "hme_interface.h"
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#include "hme_common_defs.h"
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#include "hme_defs.h"
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#include "ihevce_rc_enc_structs.h"
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#include "ihevce_rc_interface.h"
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#include "ihevce_sub_pic_rc.h"
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#include "cast_types.h"
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#include "osal.h"
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#include "osal_defaults.h"
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/*****************************************************************************/
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/* Globals */
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/*****************************************************************************/
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/* @ brief : Qp deviation of -6 to 6 is mapped */
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float qp_scale_dev[13] = { 0.5, 0.56, 0.630, 0.707, 0.794, 0.891, 1.00,
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1.122, 1.259, 1.414, 1.587, 1.782, 2.00 };
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/*****************************************************************************/
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/* Constant Macros */
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/*****************************************************************************/
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#define IN_FRAME_RC_PRINT 0
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#define IN_FRAME_RC_FRAME_NUM 4
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|
/*****************************************************************************/
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/* Function Definitions */
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/*****************************************************************************/
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/*!
|
******************************************************************************
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* \if Function name : ihevce_sub_pic_rc_bits_fill \endif
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*
|
* \brief
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* Sub-pic RC thread interface function
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*
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* \param[in] Frame process pointer
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*
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* \return
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* None
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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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void ihevce_sub_pic_rc_in_data(
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void *pv_multi_thrd_ctxt, void *pv_ctxt, void *pv_ctb_ipe_analyse, void *pv_frm_ctb_prms)
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{
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multi_thrd_ctxt_t *ps_multi_thrd_ctxt = (multi_thrd_ctxt_t *)pv_multi_thrd_ctxt;
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ihevce_enc_loop_ctxt_t *ps_ctxt = (ihevce_enc_loop_ctxt_t *)pv_ctxt;
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ipe_l0_ctb_analyse_for_me_t *ps_ctb_ipe_analyse =
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(ipe_l0_ctb_analyse_for_me_t *)pv_ctb_ipe_analyse;
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frm_ctb_ctxt_t *ps_frm_ctb_prms = (frm_ctb_ctxt_t *)pv_frm_ctb_prms;
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WORD32 j = 0;
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WORD32 i4_frm_id = ps_ctxt->i4_enc_frm_id;
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WORD32 i4_br_id = ps_ctxt->i4_bitrate_instance_num;
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WORD32 i4_thrd_id = ps_ctxt->thrd_id;
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WORD32 i4_ctb_count_flag = 0;
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WORD32 i4_is_intra_pic = (ISLICE == ps_ctxt->i1_slice_type);
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/*Accumalate all the variables in shared memory */
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for(j = 0; j < (MAX_CU_IN_CTB >> 2); j++)
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{
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ps_multi_thrd_ctxt->ai8_nctb_ipe_sad[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctb_ipe_analyse->ai4_best_sad_8x8_l1_ipe[j];
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ps_multi_thrd_ctxt->ai8_nctb_me_sad[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctb_ipe_analyse->ai4_best_sad_8x8_l1_me[j];
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ps_multi_thrd_ctxt->ai8_nctb_act_factor[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctb_ipe_analyse->ai4_8x8_act_factor[j];
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}
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ps_multi_thrd_ctxt->ai8_nctb_l0_ipe_sad[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctb_ipe_analyse->i4_ctb_acc_satd;
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/*Accumalte L0 MPM bits for N CTB*/
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ps_multi_thrd_ctxt->ai8_nctb_mpm_bits_consumed[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctb_ipe_analyse->i4_ctb_acc_mpm_bits;
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/*Accumate the total bits and hdr bits for N Ctbs*/
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ps_multi_thrd_ctxt->ai8_nctb_bits_consumed[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctxt->u4_total_cu_bits;
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ps_multi_thrd_ctxt->ai8_acc_bits_consumed[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctxt->u4_total_cu_bits;
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ps_multi_thrd_ctxt->ai8_acc_bits_mul_qs_consumed[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctxt->u4_total_cu_bits_mul_qs;
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ps_multi_thrd_ctxt->ai8_nctb_hdr_bits_consumed[i4_frm_id][i4_br_id][i4_thrd_id] +=
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ps_ctxt->u4_total_cu_hdr_bits;
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/*Reset the total CU bits, accumalated for all CTBS*/
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ps_ctxt->u4_total_cu_bits = 0;
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ps_ctxt->u4_total_cu_hdr_bits = 0;
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ps_ctxt->u4_total_cu_bits_mul_qs = 0;
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/*Put mutex lock for incrementing cb count */
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osal_mutex_lock(ps_multi_thrd_ctxt->pv_sub_pic_rc_mutex_lock_hdl);
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ps_multi_thrd_ctxt->ai4_acc_ctb_ctr[i4_frm_id][i4_br_id] += 1;
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ps_multi_thrd_ctxt->ai4_ctb_ctr[i4_frm_id][i4_br_id] += 1;
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/*Check if the acc ctb counter across thread has reached the required threshold */
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if(ps_multi_thrd_ctxt->ai4_acc_ctb_ctr[i4_frm_id][i4_br_id] >=
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ps_ctxt->i4_num_ctb_for_out_scale)
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{
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i4_ctb_count_flag = 1;
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/*Reset accumalated CTB counter appropriately s */
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ps_multi_thrd_ctxt->ai4_acc_ctb_ctr[i4_frm_id][i4_br_id] = 0;
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}
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/*Variables to be sent in the queue after required ctb count is reached */
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if(1 == i4_ctb_count_flag)
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{
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WORD32 i4_temp_thrd_id;
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LWORD64 i8_nctb_l1_me_sad = 0, i8_nctb_l1_ipe_sad = 0;
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LWORD64 i8_nctb_l0_ipe_satd = 0, i8_nctb_l1_activity_fact = 0;
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LWORD64 i8_nctb_hdr_bits_consumed = 0, i8_nctb_l0_mpm_bits = 0;
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LWORD64 i8_nctb_bits_consumed = 0, i8_acc_bits_consumed = 0,
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i8_acc_bits_mul_qs_consumed = 0;
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LWORD64 i8_frame_l1_ipe_sad, i8_frame_l0_ipe_satd, i8_frame_l1_me_sad;
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LWORD64 i8_frame_l1_activity_fact, i8_frame_bits_estimated;
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for(i4_temp_thrd_id = 0; i4_temp_thrd_id < ps_ctxt->i4_num_proc_thrds; i4_temp_thrd_id++)
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{
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/*Accumalte only if thread id is valid */
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if(ps_multi_thrd_ctxt->ai4_thrd_id_valid_flag[i4_frm_id][i4_br_id][i4_temp_thrd_id] ==
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1)
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{
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/*store complexities for the ctbs across all threads till then */
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i8_nctb_l1_me_sad +=
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ps_multi_thrd_ctxt->ai8_nctb_me_sad[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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i8_nctb_l1_ipe_sad +=
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ps_multi_thrd_ctxt->ai8_nctb_ipe_sad[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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i8_nctb_l0_ipe_satd +=
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ps_multi_thrd_ctxt->ai8_nctb_l0_ipe_sad[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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i8_nctb_l1_activity_fact +=
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ps_multi_thrd_ctxt->ai8_nctb_act_factor[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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/*Set encoder total and hdr bits and mpm bits for that N ctbs */
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i8_nctb_hdr_bits_consumed +=
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ps_multi_thrd_ctxt
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->ai8_nctb_hdr_bits_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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i8_nctb_l0_mpm_bits +=
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ps_multi_thrd_ctxt
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->ai8_nctb_mpm_bits_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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i8_nctb_bits_consumed +=
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ps_multi_thrd_ctxt->ai8_nctb_bits_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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/*Set encoder total bits for ctbs till then */
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i8_acc_bits_consumed +=
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ps_multi_thrd_ctxt->ai8_acc_bits_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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i8_acc_bits_mul_qs_consumed +=
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ps_multi_thrd_ctxt
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->ai8_acc_bits_mul_qs_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id];
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|
/*Reset NCTB total and hdr, mpm bits counter to zero */
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ps_multi_thrd_ctxt->ai8_nctb_bits_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id] =
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0;
|
ps_multi_thrd_ctxt
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->ai8_nctb_hdr_bits_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id] = 0;
|
ps_multi_thrd_ctxt
|
->ai8_nctb_mpm_bits_consumed[i4_frm_id][i4_br_id][i4_temp_thrd_id] = 0;
|
}
|
}
|
|
/*Store all frame level params */
|
i8_frame_l1_ipe_sad = ps_ctxt->i8_frame_l1_ipe_sad;
|
i8_frame_l0_ipe_satd = ps_ctxt->i8_frame_l0_ipe_satd;
|
i8_frame_l1_me_sad = ps_ctxt->i8_frame_l1_me_sad;
|
i8_frame_l1_activity_fact = ps_ctxt->i8_frame_l1_activity_fact;
|
i8_frame_bits_estimated = ps_ctxt->ai4_frame_bits_estimated[i4_frm_id][i4_br_id];
|
|
/*If CU level RC is disabled reset the nctb and frame level factor */
|
if(0 == ps_ctxt->i4_qp_mod)
|
{
|
i8_frame_l1_activity_fact = 0;
|
}
|
|
ASSERT(ps_ctxt->ai4_frame_bits_estimated[i4_frm_id][i4_br_id] != 0);
|
|
{
|
float bits_estimated, activity_ratio = 1;
|
WORD32 i8_ctb_bits_estimated;
|
float f_bit_deviation;
|
WORD32 i4_tot_frame_ctb =
|
ps_frm_ctb_prms->i4_num_ctbs_vert * ps_frm_ctb_prms->i4_num_ctbs_horz;
|
|
/*The QP limit can only increment/decrement by 3/1 */
|
float f_qp_increase_limit = (1.414);
|
//float f_qp_decrease_limit = (0.891);
|
|
/*Frame level activity is set to 0 for cu-level rc off*/
|
if(i8_frame_l1_activity_fact != 0)
|
activity_ratio =
|
(float)(i8_frame_l1_activity_fact) / (float)(i8_nctb_l1_activity_fact);
|
|
activity_ratio = 1;
|
|
/*Estimate the bits to be consumed based on the intra and inter complexity */
|
if(i4_is_intra_pic)
|
{
|
float sad_ratio = (float)(i8_nctb_l0_ipe_satd) / (float)(i8_frame_l0_ipe_satd);
|
bits_estimated = sad_ratio * activity_ratio * ((float)i8_frame_bits_estimated);
|
}
|
else
|
{
|
float sad_ratio = (float)(i8_nctb_l1_me_sad) / (float)(i8_frame_l1_me_sad);
|
bits_estimated = sad_ratio * activity_ratio * ((float)i8_frame_bits_estimated);
|
}
|
|
i8_ctb_bits_estimated = (i8_frame_bits_estimated / i4_tot_frame_ctb);
|
|
/*for better control on both sides*/
|
f_bit_deviation = ((i8_acc_bits_consumed * 1.0) / bits_estimated);
|
//printf("\n dev = %f\t",f_bit_deviation);
|
/* if consumed bits is higher than 7.5% or consumed bits is lower by 20%)*/
|
if((f_bit_deviation > 1.075) ||
|
((f_bit_deviation < 0.8) &&
|
(ps_ctxt->i4_is_model_valid == 0 ||
|
(ps_multi_thrd_ctxt->ai4_threshold_reached[i4_frm_id][i4_br_id]))))
|
{
|
float f_qscale_avg_factor;
|
WORD32 i4_cu_qp_sub_pic_rc_curr;
|
/*get the Qscale of Frame QP*/
|
WORD32 i4_frm_qs_q3 =
|
(ps_ctxt->ps_rc_quant_ctxt->pi4_qp_to_qscale
|
[ps_ctxt->i4_frame_qp + ps_ctxt->ps_rc_quant_ctxt->i1_qp_offset]);
|
WORD32 i4_prev_qp = ps_ctxt->i4_frame_mod_qp;
|
|
ps_multi_thrd_ctxt->ai4_threshold_reached[i4_frm_id][i4_br_id] = 1;
|
|
/*Calculating Intra scale factor */
|
if(i4_is_intra_pic)
|
{
|
/*In case of lower QP, Qscale increase at every step is very low, which doesn't allow QP increase
|
to meet the rate, hence disable deviation clip below QP 4 for all bitdepth*/
|
if(i4_prev_qp > MIN_QP_NO_CLIP_DEV)
|
{
|
/* Clip the bits deviation such that it never cross +3 qp shifts from average QP so far coded with in-frame rc*/
|
if(f_bit_deviation > f_qp_increase_limit)
|
{
|
f_bit_deviation = f_qp_increase_limit;
|
}
|
}
|
|
/*The current qscale should do not deviate +/- 3 QP from the previous qscale */
|
f_qscale_avg_factor =
|
(((float)(i8_acc_bits_mul_qs_consumed * (1 << QSCALE_Q_FAC_3))) /
|
(i8_acc_bits_consumed * i4_frm_qs_q3));
|
i4_cu_qp_sub_pic_rc_curr =
|
f_qscale_avg_factor * f_bit_deviation * (1 << QP_LEVEL_MOD_ACT_FACTOR);
|
}
|
else /*Calculating Inter scale factor */
|
{
|
/*In case of lower QP, Qscale increase at every step is very low, which doesn't allow QP increase
|
to meet the rate, hence disable deviation clip below QP 4 for all bitdepth*/
|
if(i4_prev_qp > MIN_QP_NO_CLIP_DEV)
|
{
|
/* Clip the bits deviation such that it never cross +3 qp shifts from average QP so far coded with in-frame rc*/
|
if(f_bit_deviation > f_qp_increase_limit)
|
{
|
f_bit_deviation = f_qp_increase_limit;
|
}
|
}
|
|
/*The current qscale should do not deviate +/- 3 QP from the previous qscale */
|
f_qscale_avg_factor =
|
(((float)(i8_acc_bits_mul_qs_consumed * (1 << QSCALE_Q_FAC_3))) /
|
(i8_acc_bits_consumed * i4_frm_qs_q3));
|
i4_cu_qp_sub_pic_rc_curr =
|
f_qscale_avg_factor * f_bit_deviation * (1 << QP_LEVEL_MOD_ACT_FACTOR);
|
}
|
//printf("Avg_qscale = %f\t qs_inq3 = %d",f_qscale_avg_factor,i4_frm_qs_q3);
|
/*update of previous chunk QP in multi-thread context, so that all threads can use it from now onwards*/
|
{
|
ps_multi_thrd_ctxt->ai4_prev_chunk_qp[i4_frm_id][i4_br_id] =
|
ps_ctxt->i4_frame_mod_qp;
|
}
|
/*Limit the qp from decreasing less than 6 compared to frame qp */
|
{
|
osal_mutex_lock(ps_multi_thrd_ctxt->pv_sub_pic_rc_for_qp_update_mutex_lock_hdl);
|
ps_multi_thrd_ctxt->ai4_curr_qp_estimated[i4_frm_id][i4_br_id] =
|
i4_cu_qp_sub_pic_rc_curr;
|
osal_mutex_unlock(
|
ps_multi_thrd_ctxt->pv_sub_pic_rc_for_qp_update_mutex_lock_hdl);
|
}
|
}
|
}
|
}
|
osal_mutex_unlock(ps_multi_thrd_ctxt->pv_sub_pic_rc_mutex_lock_hdl);
|
return;
|
}
|
|
/*!
|
******************************************************************************
|
* \if Function name : ihevce_sub_pic_rc_qp_query \endif
|
*
|
* \brief
|
* Sub-pic RC thread interface function
|
*
|
* \param[in] Frame process pointer
|
*
|
* \return
|
* None
|
*
|
* \author
|
* Ittiam
|
*
|
*****************************************************************************
|
*/
|
void ihevce_sub_pic_rc_scale_query(void *pv_multi_thrd_ctxt, void *pv_ctxt)
|
{
|
multi_thrd_ctxt_t *ps_multi_thrd_ctxt = (multi_thrd_ctxt_t *)pv_multi_thrd_ctxt;
|
ihevce_enc_loop_ctxt_t *ps_ctxt = (ihevce_enc_loop_ctxt_t *)pv_ctxt;
|
WORD32 i4_mod_qp, i4_prev_qs;
|
WORD32 i4_previous_chunk_qp;
|
|
WORD32 i4_qp_delata_max_limit, i4_qp_delata_min_limit;
|
|
osal_mutex_lock(ps_multi_thrd_ctxt->pv_sub_pic_rc_for_qp_update_mutex_lock_hdl);
|
|
i4_mod_qp =
|
(ps_ctxt->ps_rc_quant_ctxt
|
->pi4_qp_to_qscale[ps_ctxt->i4_frame_qp + ps_ctxt->ps_rc_quant_ctxt->i1_qp_offset]);
|
i4_previous_chunk_qp =
|
ps_multi_thrd_ctxt
|
->ai4_prev_chunk_qp[ps_ctxt->i4_enc_frm_id][ps_ctxt->i4_bitrate_instance_num];
|
i4_prev_qs =
|
(ps_ctxt->ps_rc_quant_ctxt
|
->pi4_qp_to_qscale[i4_previous_chunk_qp + ps_ctxt->ps_rc_quant_ctxt->i1_qp_offset]);
|
/*Limit the qp_delta_scale if it exceeds the limit of QP51 and QP 1 */
|
|
i4_qp_delata_max_limit =
|
ps_ctxt->ps_rc_quant_ctxt->i2_max_qscale * (1 << QP_LEVEL_MOD_ACT_FACTOR);
|
i4_qp_delata_max_limit = i4_qp_delata_max_limit / i4_mod_qp;
|
|
i4_qp_delata_min_limit =
|
ps_ctxt->ps_rc_quant_ctxt->i2_min_qscale * (1 << QP_LEVEL_MOD_ACT_FACTOR);
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i4_qp_delata_min_limit = i4_qp_delata_min_limit / i4_mod_qp;
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{
|
/*For Non-I SCD and Frames after SCD*/
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/*The scale is tweeked to only increase qp (increased by 6) if the bits consumed is higher than bits
|
estimated */
|
ps_ctxt->i4_cu_qp_sub_pic_rc =
|
ps_multi_thrd_ctxt
|
->ai4_curr_qp_estimated[ps_ctxt->i4_enc_frm_id][ps_ctxt->i4_bitrate_instance_num];
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/*Limit the Qscale */
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if(ps_ctxt->i4_cu_qp_sub_pic_rc > i4_qp_delata_max_limit)
|
{
|
ps_ctxt->i4_cu_qp_sub_pic_rc = i4_qp_delata_max_limit;
|
}
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else if(ps_ctxt->i4_cu_qp_sub_pic_rc < i4_qp_delata_min_limit)
|
{
|
ps_ctxt->i4_cu_qp_sub_pic_rc = i4_qp_delata_min_limit;
|
}
|
|
ps_multi_thrd_ctxt
|
->ai4_curr_qp_estimated[ps_ctxt->i4_enc_frm_id][ps_ctxt->i4_bitrate_instance_num] =
|
ps_ctxt->i4_cu_qp_sub_pic_rc;
|
}
|
|
/*Accumalate the CTB level QP here and feed to rc as average qp*/
|
{
|
WORD32 i4_mod_cur_qp, i4_mod_prev_qp;
|
|
i4_mod_cur_qp =
|
((i4_mod_qp * ps_ctxt->i4_cu_qp_sub_pic_rc) + (1 << (QP_LEVEL_MOD_ACT_FACTOR - 1))) >>
|
QP_LEVEL_MOD_ACT_FACTOR;
|
|
/*Limit the qscale and qp */
|
if(i4_mod_cur_qp > ps_ctxt->ps_rc_quant_ctxt->i2_max_qscale)
|
{
|
i4_mod_cur_qp = ps_ctxt->ps_rc_quant_ctxt->i2_max_qscale;
|
ASSERT(0);
|
}
|
else if(i4_mod_cur_qp < ps_ctxt->ps_rc_quant_ctxt->i2_min_qscale)
|
{
|
i4_mod_cur_qp = ps_ctxt->ps_rc_quant_ctxt->i2_min_qscale;
|
ASSERT(0);
|
}
|
|
i4_mod_cur_qp = ps_ctxt->ps_rc_quant_ctxt->pi4_qscale_to_qp[i4_mod_cur_qp];
|
/*limit the prev qs*/
|
if(i4_prev_qs > ps_ctxt->ps_rc_quant_ctxt->i2_max_qscale)
|
{
|
i4_prev_qs = ps_ctxt->ps_rc_quant_ctxt->i2_max_qscale;
|
}
|
else if(i4_prev_qs < ps_ctxt->ps_rc_quant_ctxt->i2_min_qscale)
|
{
|
i4_prev_qs = ps_ctxt->ps_rc_quant_ctxt->i2_min_qscale;
|
}
|
|
i4_mod_prev_qp = ps_ctxt->ps_rc_quant_ctxt->pi4_qscale_to_qp[i4_prev_qs];
|
|
/*cur qp < prev qp, then allow only -1*/
|
if(i4_mod_cur_qp < i4_mod_prev_qp)
|
{
|
i4_mod_cur_qp = i4_mod_prev_qp - 1;
|
if(i4_mod_cur_qp < (ps_ctxt->i4_frame_qp - 6))
|
{
|
i4_mod_cur_qp = (ps_ctxt->i4_frame_qp - 6);
|
}
|
}
|
|
/*In case of lower QP, Qscale increase at every step is very low, which doesn't allow QP increase
|
to meet the rate, hence disable deviation clip below QP 4 for all bitdepth*/
|
if(i4_mod_cur_qp > i4_mod_prev_qp)
|
{
|
i4_mod_cur_qp = MIN(i4_mod_prev_qp + 3, i4_mod_cur_qp);
|
}
|
|
/* CLIP to maintain Qp between user configured and min and max Qp values*/
|
if(i4_mod_cur_qp > ps_ctxt->ps_rc_quant_ctxt->i2_max_qp)
|
i4_mod_cur_qp = ps_ctxt->ps_rc_quant_ctxt->i2_max_qp;
|
else if(i4_mod_cur_qp < ps_ctxt->ps_rc_quant_ctxt->i2_min_qp)
|
i4_mod_cur_qp = ps_ctxt->ps_rc_quant_ctxt->i2_min_qp;
|
|
/*Modify the qp based on delta*/
|
ps_ctxt->i4_frame_mod_qp = i4_mod_cur_qp;
|
ps_ctxt->i4_is_first_query = 0;
|
if(ps_ctxt->i4_frame_mod_qp != ps_ctxt->i4_frame_qp)
|
{
|
ps_ctxt->i4_is_ctb_qp_modified = 1;
|
}
|
}
|
|
ps_multi_thrd_ctxt->ai4_curr_qp_acc[ps_ctxt->i4_enc_frm_id][ps_ctxt->i4_bitrate_instance_num] +=
|
ps_ctxt->i4_frame_mod_qp;
|
|
osal_mutex_unlock(ps_multi_thrd_ctxt->pv_sub_pic_rc_for_qp_update_mutex_lock_hdl);
|
|
return;
|
}
|
