You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
243 lines
7.1 KiB
243 lines
7.1 KiB
/****************************************************************************** |
|
* |
|
* 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 |
|
* ih264e_modify_frm_rate.c |
|
* |
|
* @brief |
|
* Functions used to modify frame rate |
|
* |
|
* @author |
|
* ittiam |
|
* |
|
* @par List of Functions: |
|
* - ih264e_pd_frm_rate_get_init_free_memtab() |
|
* - ih264e_init_pd_frm_rate() |
|
* - ih264e_update_pd_frm_rate() |
|
* - ih264e_get_pd_avg_frm_rate() |
|
* |
|
* @remarks |
|
* None |
|
* |
|
******************************************************************************* |
|
*/ |
|
|
|
/*****************************************************************************/ |
|
/* File Includes */ |
|
/*****************************************************************************/ |
|
|
|
/* User include files */ |
|
#include "irc_datatypes.h" |
|
#include "iv2.h" |
|
#include "ive2.h" |
|
#include "ih264_defs.h" |
|
#include "ih264_structs.h" |
|
#include "ih264_trans_quant_itrans_iquant.h" |
|
#include "ih264_inter_pred_filters.h" |
|
#include "ih264_mem_fns.h" |
|
#include "ih264_padding.h" |
|
#include "ih264_intra_pred_filters.h" |
|
#include "ih264_deblk_edge_filters.h" |
|
#include "ih264_cabac_tables.h" |
|
#include "ih264e_error.h" |
|
#include "ih264e_bitstream.h" |
|
#include "ih264e_defs.h" |
|
#include "ime_distortion_metrics.h" |
|
#include "ime_defs.h" |
|
#include "ime_structs.h" |
|
#include "irc_cntrl_param.h" |
|
#include "irc_frame_info_collector.h" |
|
#include "ih264e_rate_control.h" |
|
#include "ih264e_cabac_structs.h" |
|
#include "ih264e_structs.h" |
|
#include "ih264e_rc_mem_interface.h" |
|
#include "ih264e_time_stamp.h" |
|
#include "ih264e_modify_frm_rate.h" |
|
|
|
|
|
/*****************************************************************************/ |
|
/* Function Definitions */ |
|
/*****************************************************************************/ |
|
|
|
/** |
|
******************************************************************************* |
|
* |
|
* @brief Function to init pd frame rate memtab |
|
* |
|
* @par Description |
|
* Function to init pull down frame rate memtab |
|
* |
|
* @param[in] pps_pd_frm_rate |
|
* pull down frame rate context |
|
* |
|
* @param[in] ps_memtab |
|
* Handle to memtab |
|
* |
|
* @param[in] e_func_type |
|
* Function type (get memtab/ update memtab) |
|
* |
|
* @returns Number of memtabs used |
|
* |
|
* @remarks None |
|
* |
|
******************************************************************************* |
|
*/ |
|
WORD32 ih264e_pd_frm_rate_get_init_free_memtab(pd_frm_rate_handle *pps_pd_frm_rate, |
|
itt_memtab_t *ps_memtab, |
|
ITT_FUNC_TYPE_E e_func_type) |
|
{ |
|
WORD32 i4_mem_tab_idx = 0; |
|
pd_frm_rate_t s_temp_pd_frm_rate_t; |
|
|
|
/* Hack for al alloc, during which we dont have any state memory. |
|
Dereferencing can cause issues */ |
|
if (e_func_type == GET_NUM_MEMTAB || e_func_type == FILL_MEMTAB) |
|
(*pps_pd_frm_rate) = &s_temp_pd_frm_rate_t; |
|
|
|
/* for src rate control state structure */ |
|
if (e_func_type != GET_NUM_MEMTAB) |
|
{ |
|
fill_memtab(&ps_memtab[i4_mem_tab_idx], sizeof(pd_frm_rate_t), |
|
ALIGN_128_BYTE, PERSISTENT, DDR); |
|
use_or_fill_base(&ps_memtab[0], (void**) pps_pd_frm_rate, e_func_type); |
|
} |
|
i4_mem_tab_idx++; |
|
|
|
return (i4_mem_tab_idx); |
|
} |
|
|
|
/** |
|
******************************************************************************* |
|
* |
|
* @brief Initializes the pull down frame rate state structure based on input |
|
* frame rate |
|
* |
|
* @par Description |
|
* Initializes the pull down frame rate state structure based on input frame rate |
|
* |
|
* @param[in] ps_pd_frm_rate |
|
* Pull down frame rate context |
|
* |
|
* @param[in] u4_input_frm_rate |
|
* Input frame rate in frame per 1000sec |
|
* |
|
* @returns none |
|
* |
|
* @remarks |
|
* |
|
******************************************************************************* |
|
*/ |
|
void ih264e_init_pd_frm_rate(pd_frm_rate_t *ps_pd_frm_rate, |
|
UWORD32 u4_input_frm_rate) |
|
{ |
|
WORD32 i; |
|
|
|
ps_pd_frm_rate->u4_input_frm_rate = u4_input_frm_rate; |
|
|
|
for (i = 0; i < (WORD32) (u4_input_frm_rate / 1000); i++) |
|
{ |
|
ps_pd_frm_rate->u4_cur_frm_rate[i] = u4_input_frm_rate; |
|
} |
|
|
|
ps_pd_frm_rate->u4_frm_num = 0; |
|
|
|
ps_pd_frm_rate->u4_tot_frm_encoded = 0; |
|
} |
|
|
|
/** |
|
******************************************************************************* |
|
* |
|
* @brief Function to update pull down frame rate |
|
* |
|
* @par Description |
|
* For each frame a run time frame rate value is sent based on whether a frame |
|
* is skipped or not. If it is skipped for pull down then the current frame |
|
* rate for the pull down period is signaled as 4/5th of the original frame |
|
* rate. Thus when this is averaged the frame rate gradually switches from the |
|
* input frame rate to 4/5th of input frame rate as and when more 3:2 pull |
|
* down patterns are detected |
|
* |
|
* @param[in] ps_pd_frm_rate |
|
* Pull down frame rate context |
|
* |
|
* @param[in] u4_input_frm_rate |
|
* Input frame rate in frame per 1000sec |
|
* |
|
* @returns none |
|
* |
|
* @remarks |
|
* |
|
******************************************************************************* |
|
*/ |
|
void ih264e_update_pd_frm_rate(pd_frm_rate_t *ps_pd_frm_rate, |
|
UWORD32 u4_cur_frm_rate) |
|
{ |
|
ps_pd_frm_rate->u4_cur_frm_rate[ps_pd_frm_rate->u4_frm_num] = u4_cur_frm_rate; |
|
|
|
ps_pd_frm_rate->u4_frm_num++; |
|
|
|
/* Increment the frame number */ |
|
if (ps_pd_frm_rate->u4_tot_frm_encoded < (ps_pd_frm_rate->u4_input_frm_rate / 1000)) |
|
{ |
|
ps_pd_frm_rate->u4_tot_frm_encoded++; |
|
} |
|
|
|
/* Reset frm_num to zero */ |
|
if (ps_pd_frm_rate->u4_frm_num >= (ps_pd_frm_rate->u4_input_frm_rate / 1000)) |
|
{ |
|
ps_pd_frm_rate->u4_frm_num = 0; |
|
} |
|
} |
|
|
|
/** |
|
******************************************************************************* |
|
* |
|
* @brief returns average frame rate in 1 sec duration |
|
* |
|
* @par Description |
|
* Averages the last N frame in period(1 sec) and then gives that |
|
* as the current frames frame rate. Thus this averages out the sudden |
|
* variation in frame rate |
|
* |
|
* @param[in] ps_pd_frm_rate |
|
* Handle to pull down frame rate context |
|
* |
|
* @returns average frame rate |
|
* |
|
* @remarks |
|
* |
|
******************************************************************************* |
|
*/ |
|
UWORD32 ih264e_get_pd_avg_frm_rate(pd_frm_rate_t *ps_pd_frm_rate) |
|
{ |
|
WORD32 i; |
|
WORD32 i4_avg_frm_rate = 0; |
|
|
|
for (i = 0; i < (WORD32) ps_pd_frm_rate->u4_tot_frm_encoded; i++) |
|
{ |
|
i4_avg_frm_rate += ps_pd_frm_rate->u4_cur_frm_rate[i]; |
|
} |
|
|
|
i4_avg_frm_rate = i4_avg_frm_rate / ps_pd_frm_rate->u4_tot_frm_encoded; |
|
|
|
return i4_avg_frm_rate; |
|
}
|
|
|