| /****************************************************************************** |
| * |
| * 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; |
| } |