/src/libhevc/encoder/vbr_str_prms.c

Source (jump to first uncovered line)
/******************************************************************************
 *
 * 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 */

Line	Count	Source (jump to first uncovered line)
1		/******************************************************************************
2		*
3		* Copyright (C) 2018 The Android Open Source Project
4		*
5		* Licensed under the Apache License, Version 2.0 (the "License");
6		* you may not use this file except in compliance with the License.
7		* You may obtain a copy of the License at:
8		*
9		* http://www.apache.org/licenses/LICENSE-2.0
10		*
11		* Unless required by applicable law or agreed to in writing, software
12		* distributed under the License is distributed on an "AS IS" BASIS,
13		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14		* See the License for the specific language governing permissions and
15		* limitations under the License.
16		*
17		*****************************************************************************
18		* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19		*/
20		/*!
21		******************************************************************************
22		* \file vbr_str_prms.c
23		*
24		* \brief
25		* This file contain
26		*
27		* \date
28		*
29		* \author
30		* ittiam
31		*
32		******************************************************************************
33		*/
34		/*****************************************************************************/
35		/* File Includes */
36		/*****************************************************************************/
37		/* System include files */
38		#include <stdio.h>
39
40		/* User include files */
41		#include "ittiam_datatypes.h"
42		#include "rc_cntrl_param.h"
43		#include "var_q_operator.h"
44		#include "rc_common.h"
45		#include "vbr_str_prms.h"
46
47		/******************************************************************************
48		Function Name : init_vbv_str_prms
49		Description : Initializes and calcuates the number of I frame and P frames
50		in the delay period
51		Arguments :
52		Return Values : void
53		Revision History:
54		Creation
55		*****************************************************************************/
56		#if NON_STEADSTATE_CODE
57		void init_vbv_str_prms(
58		vbr_str_prms_t *p_vbr_str_prms,
59		UWORD32 u4_intra_frm_interval,
60		UWORD32 u4_src_ticks,
61		UWORD32 u4_tgt_ticks,
62		UWORD32 u4_frms_in_delay_period)
63	2.78k	{
64	2.78k	p_vbr_str_prms->u4_frms_in_delay_prd = u4_frms_in_delay_period;
65	2.78k	p_vbr_str_prms->u4_src_ticks = u4_src_ticks;
66	2.78k	p_vbr_str_prms->u4_tgt_ticks = u4_tgt_ticks;
67	2.78k	p_vbr_str_prms->u4_intra_frame_int = u4_intra_frm_interval;
68	2.78k	}
69		#endif /* #if NON_STEADSTATE_CODE */
70
71		/*********************************************************************************
72		Function Name : change_vbr_str_prms
73		Description : Takes in changes of Intra frame interval, source and target ticks
74		and recalculates the position of the next I frame
75		Arguments :
76		Return Values : void
77		Revision History:
78		Creation
79		***********************************************************************************/
80		#if NON_STEADSTATE_CODE
81		void change_vsp_ifi(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_intra_frame_int)
82	0	{
83	0	init_vbv_str_prms(
84	0	p_vbr_str_prms,
85	0	u4_intra_frame_int,
86	0	p_vbr_str_prms->u4_src_ticks,
87	0	p_vbr_str_prms->u4_tgt_ticks,
88	0	p_vbr_str_prms->u4_frms_in_delay_prd);
89	0	}
90		/******************************************************************************
91		Function Name : change_vsp_tgt_ticks
92		Description :
93		Arguments : p_vbr_str_prms
94		Return Values : void
95		Revision History:
96		Creation
97		*****************************************************************************/
98		void change_vsp_tgt_ticks(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_tgt_ticks)
99	0	{
100	0	UWORD32 u4_rem_intra_per_scaled;
101	0	UWORD32 u4_prev_tgt_ticks = p_vbr_str_prms->u4_tgt_ticks;
102
103		/*
104		If the target frame rate is changed, recalculate the position of the next I frame based
105		on the new target frame rate
106
107		LIMITATIONS :
108		Currently no support is available for dynamic change in source frame rate
109		*/
110
111	0	u4_rem_intra_per_scaled =
112	0	((p_vbr_str_prms->u4_intra_prd_pos_in_tgt_ticks - p_vbr_str_prms->u4_cur_pos_in_src_ticks) /
113	0	u4_prev_tgt_ticks) *
114	0	u4_tgt_ticks;
115
116	0	p_vbr_str_prms->u4_intra_prd_pos_in_tgt_ticks =
117	0	u4_rem_intra_per_scaled + p_vbr_str_prms->u4_cur_pos_in_src_ticks;
118	0	}
119		/******************************************************************************
120		Function Name : change_vsp_src_ticks
121		Description :
122		Arguments : p_vbr_str_prms
123		Return Values : void
124		Revision History:
125		Creation
126		*****************************************************************************/
127		void change_vsp_src_ticks(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_src_ticks)
128	0	{
129	0	init_vbv_str_prms(
130	0	p_vbr_str_prms,
131	0	p_vbr_str_prms->u4_intra_frame_int,
132	0	u4_src_ticks,
133	0	p_vbr_str_prms->u4_tgt_ticks,
134	0	p_vbr_str_prms->u4_frms_in_delay_prd);
135	0	}
136		/******************************************************************************
137		Function Name : change_vsp_fidp
138		Description :
139		Arguments : p_vbr_str_prms
140		Return Values : void
141		Revision History:
142		Creation
143		*****************************************************************************/
144		void change_vsp_fidp(vbr_str_prms_t *p_vbr_str_prms, UWORD32 u4_frms_in_delay_period)
145	0	{
146	0	init_vbv_str_prms(
147	0	p_vbr_str_prms,
148	0	p_vbr_str_prms->u4_intra_frame_int,
149	0	p_vbr_str_prms->u4_src_ticks,
150	0	p_vbr_str_prms->u4_tgt_ticks,
151	0	u4_frms_in_delay_period);
152	0	}
153		#endif /* #if NON_STEADSTATE_CODE */

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Created: 2025-08-03 06:13