/******************************************************************************
|
*
|
* Copyright (C) 2018 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 vbr_str_prms.c
|
*
|
* \brief
|
* This file contain
|
*
|
* \date
|
*
|
* \author
|
* ittiam
|
*
|
******************************************************************************
|
*/
|
/*****************************************************************************/
|
/* File Includes */
|
/*****************************************************************************/
|
/* System include files */
|
#include <stdio.h>
|
|
/* User include files */
|
#include "ittiam_datatypes.h"
|
#include "rc_cntrl_param.h"
|
#include "var_q_operator.h"
|
#include "rc_common.h"
|
#include "vbr_str_prms.h"
|
|
/******************************************************************************
|
Function Name : init_vbv_str_prms
|
Description : Initializes and calcuates the number of I frame and P frames
|
in the delay period
|
Arguments :
|
Return Values : void
|
Revision History:
|
Creation
|
*****************************************************************************/
|
#if NON_STEADSTATE_CODE
|
void init_vbv_str_prms(
|
vbr_str_prms_t *p_vbr_str_prms,
|
UWORD32 u4_intra_frm_interval,
|
UWORD32 u4_src_ticks,
|
UWORD32 u4_tgt_ticks,
|
UWORD32 u4_frms_in_delay_period)
|
{
|
p_vbr_str_prms->u4_frms_in_delay_prd = u4_frms_in_delay_period;
|
p_vbr_str_prms->u4_src_ticks = u4_src_ticks;
|
p_vbr_str_prms->u4_tgt_ticks = u4_tgt_ticks;
|
p_vbr_str_prms->u4_intra_frame_int = u4_intra_frm_interval;
|
}
|
#endif /* #if NON_STEADSTATE_CODE */
|
|
/*********************************************************************************
|
Function Name : change_vbr_str_prms
|
Description : Takes in changes of Intra frame interval, source and target ticks
|
and recalculates the position of the next I frame
|
Arguments :
|
Return Values : void
|
Revision History:
|
Creation
|
***********************************************************************************/
|
#if NON_STEADSTATE_CODE
|
void change_vsp_ifi(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_intra_frame_int)
|
{
|
init_vbv_str_prms(
|
p_vbr_str_prms,
|
u4_intra_frame_int,
|
p_vbr_str_prms->u4_src_ticks,
|
p_vbr_str_prms->u4_tgt_ticks,
|
p_vbr_str_prms->u4_frms_in_delay_prd);
|
}
|
/******************************************************************************
|
Function Name : change_vsp_tgt_ticks
|
Description :
|
Arguments : p_vbr_str_prms
|
Return Values : void
|
Revision History:
|
Creation
|
*****************************************************************************/
|
void change_vsp_tgt_ticks(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_tgt_ticks)
|
{
|
UWORD32 u4_rem_intra_per_scaled;
|
UWORD32 u4_prev_tgt_ticks = p_vbr_str_prms->u4_tgt_ticks;
|
|
/*
|
If the target frame rate is changed, recalculate the position of the next I frame based
|
on the new target frame rate
|
|
LIMITATIONS :
|
Currently no support is available for dynamic change in source frame rate
|
*/
|
|
u4_rem_intra_per_scaled =
|
((p_vbr_str_prms->u4_intra_prd_pos_in_tgt_ticks - p_vbr_str_prms->u4_cur_pos_in_src_ticks) /
|
u4_prev_tgt_ticks) *
|
u4_tgt_ticks;
|
|
p_vbr_str_prms->u4_intra_prd_pos_in_tgt_ticks =
|
u4_rem_intra_per_scaled + p_vbr_str_prms->u4_cur_pos_in_src_ticks;
|
}
|
/******************************************************************************
|
Function Name : change_vsp_src_ticks
|
Description :
|
Arguments : p_vbr_str_prms
|
Return Values : void
|
Revision History:
|
Creation
|
*****************************************************************************/
|
void change_vsp_src_ticks(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_src_ticks)
|
{
|
init_vbv_str_prms(
|
p_vbr_str_prms,
|
p_vbr_str_prms->u4_intra_frame_int,
|
u4_src_ticks,
|
p_vbr_str_prms->u4_tgt_ticks,
|
p_vbr_str_prms->u4_frms_in_delay_prd);
|
}
|
/******************************************************************************
|
Function Name : change_vsp_fidp
|
Description :
|
Arguments : p_vbr_str_prms
|
Return Values : void
|
Revision History:
|
Creation
|
*****************************************************************************/
|
void change_vsp_fidp(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_frms_in_delay_period)
|
{
|
init_vbv_str_prms(
|
p_vbr_str_prms,
|
p_vbr_str_prms->u4_intra_frame_int,
|
p_vbr_str_prms->u4_src_ticks,
|
p_vbr_str_prms->u4_tgt_ticks,
|
u4_frms_in_delay_period);
|
}
|
#endif /* #if NON_STEADSTATE_CODE */
|
