Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2015 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 | ******************************************************************************* |
| 23 | * @file |
| 24 | * ih264e_modify_frm_rate.c |
| 25 | * |
| 26 | * @brief |
| 27 | * Functions used to modify frame rate |
| 28 | * |
| 29 | * @author |
| 30 | * ittiam |
| 31 | * |
| 32 | * @par List of Functions: |
| 33 | * - ih264e_pd_frm_rate_get_init_free_memtab() |
| 34 | * - ih264e_init_pd_frm_rate() |
| 35 | * - ih264e_update_pd_frm_rate() |
| 36 | * - ih264e_get_pd_avg_frm_rate() |
| 37 | * |
| 38 | * @remarks |
| 39 | * None |
| 40 | * |
| 41 | ******************************************************************************* |
| 42 | */ |
| 43 | |
| 44 | /*****************************************************************************/ |
| 45 | /* File Includes */ |
| 46 | /*****************************************************************************/ |
| 47 | |
| 48 | /* User include files */ |
| 49 | #include "irc_datatypes.h" |
| 50 | #include "iv2.h" |
| 51 | #include "ive2.h" |
| 52 | #include "ih264_defs.h" |
| 53 | #include "ih264_structs.h" |
| 54 | #include "ih264_trans_quant_itrans_iquant.h" |
| 55 | #include "ih264_inter_pred_filters.h" |
| 56 | #include "ih264_mem_fns.h" |
| 57 | #include "ih264_padding.h" |
| 58 | #include "ih264_intra_pred_filters.h" |
| 59 | #include "ih264_deblk_edge_filters.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 60 | #include "ih264_cabac_tables.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 61 | #include "ih264e_error.h" |
| 62 | #include "ih264e_bitstream.h" |
| 63 | #include "ih264e_defs.h" |
| 64 | #include "ime_distortion_metrics.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 65 | #include "ime_defs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 66 | #include "ime_structs.h" |
| 67 | #include "irc_cntrl_param.h" |
| 68 | #include "irc_frame_info_collector.h" |
| 69 | #include "ih264e_rate_control.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 70 | #include "ih264e_cabac_structs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 71 | #include "ih264e_structs.h" |
| 72 | #include "ih264e_rc_mem_interface.h" |
| 73 | #include "ih264e_time_stamp.h" |
| 74 | #include "ih264e_modify_frm_rate.h" |
| 75 | |
| 76 | |
| 77 | /*****************************************************************************/ |
| 78 | /* Function Definitions */ |
| 79 | /*****************************************************************************/ |
| 80 | |
| 81 | /** |
| 82 | ******************************************************************************* |
| 83 | * |
| 84 | * @brief Function to init pd frame rate memtab |
| 85 | * |
| 86 | * @par Description |
| 87 | * Function to init pull down frame rate memtab |
| 88 | * |
| 89 | * @param[in] pps_pd_frm_rate |
| 90 | * pull down frame rate context |
| 91 | * |
| 92 | * @param[in] ps_memtab |
| 93 | * Handle to memtab |
| 94 | * |
| 95 | * @param[in] e_func_type |
| 96 | * Function type (get memtab/ update memtab) |
| 97 | * |
| 98 | * @returns Number of memtabs used |
| 99 | * |
| 100 | * @remarks None |
| 101 | * |
| 102 | ******************************************************************************* |
| 103 | */ |
| 104 | WORD32 ih264e_pd_frm_rate_get_init_free_memtab(pd_frm_rate_handle *pps_pd_frm_rate, |
| 105 | itt_memtab_t *ps_memtab, |
| 106 | ITT_FUNC_TYPE_E e_func_type) |
| 107 | { |
| 108 | WORD32 i4_mem_tab_idx = 0; |
Martin Storsjo | 7313602 | 2015-06-23 14:51:06 +0300 | [diff] [blame] | 109 | pd_frm_rate_t s_temp_pd_frm_rate_t; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 110 | |
| 111 | /* Hack for al alloc, during which we dont have any state memory. |
| 112 | Dereferencing can cause issues */ |
| 113 | if (e_func_type == GET_NUM_MEMTAB || e_func_type == FILL_MEMTAB) |
| 114 | (*pps_pd_frm_rate) = &s_temp_pd_frm_rate_t; |
| 115 | |
| 116 | /* for src rate control state structure */ |
| 117 | if (e_func_type != GET_NUM_MEMTAB) |
| 118 | { |
| 119 | fill_memtab(&ps_memtab[i4_mem_tab_idx], sizeof(pd_frm_rate_t), |
| 120 | ALIGN_128_BYTE, PERSISTENT, DDR); |
| 121 | use_or_fill_base(&ps_memtab[0], (void**) pps_pd_frm_rate, e_func_type); |
| 122 | } |
| 123 | i4_mem_tab_idx++; |
| 124 | |
| 125 | return (i4_mem_tab_idx); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | ******************************************************************************* |
| 130 | * |
| 131 | * @brief Initializes the pull down frame rate state structure based on input |
| 132 | * frame rate |
| 133 | * |
| 134 | * @par Description |
| 135 | * Initializes the pull down frame rate state structure based on input frame rate |
| 136 | * |
| 137 | * @param[in] ps_pd_frm_rate |
| 138 | * Pull down frame rate context |
| 139 | * |
| 140 | * @param[in] u4_input_frm_rate |
| 141 | * Input frame rate in frame per 1000sec |
| 142 | * |
| 143 | * @returns none |
| 144 | * |
| 145 | * @remarks |
| 146 | * |
| 147 | ******************************************************************************* |
| 148 | */ |
| 149 | void ih264e_init_pd_frm_rate(pd_frm_rate_t *ps_pd_frm_rate, |
| 150 | UWORD32 u4_input_frm_rate) |
| 151 | { |
| 152 | WORD32 i; |
| 153 | |
| 154 | ps_pd_frm_rate->u4_input_frm_rate = u4_input_frm_rate; |
| 155 | |
| 156 | for (i = 0; i < (WORD32) (u4_input_frm_rate / 1000); i++) |
| 157 | { |
| 158 | ps_pd_frm_rate->u4_cur_frm_rate[i] = u4_input_frm_rate; |
| 159 | } |
| 160 | |
| 161 | ps_pd_frm_rate->u4_frm_num = 0; |
| 162 | |
| 163 | ps_pd_frm_rate->u4_tot_frm_encoded = 0; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | ******************************************************************************* |
| 168 | * |
| 169 | * @brief Function to update pull down frame rate |
| 170 | * |
| 171 | * @par Description |
| 172 | * For each frame a run time frame rate value is sent based on whether a frame |
| 173 | * is skipped or not. If it is skipped for pull down then the current frame |
| 174 | * rate for the pull down period is signaled as 4/5th of the original frame |
| 175 | * rate. Thus when this is averaged the frame rate gradually switches from the |
| 176 | * input frame rate to 4/5th of input frame rate as and when more 3:2 pull |
| 177 | * down patterns are detected |
| 178 | * |
| 179 | * @param[in] ps_pd_frm_rate |
| 180 | * Pull down frame rate context |
| 181 | * |
| 182 | * @param[in] u4_input_frm_rate |
| 183 | * Input frame rate in frame per 1000sec |
| 184 | * |
| 185 | * @returns none |
| 186 | * |
| 187 | * @remarks |
| 188 | * |
| 189 | ******************************************************************************* |
| 190 | */ |
| 191 | void ih264e_update_pd_frm_rate(pd_frm_rate_t *ps_pd_frm_rate, |
| 192 | UWORD32 u4_cur_frm_rate) |
| 193 | { |
| 194 | ps_pd_frm_rate->u4_cur_frm_rate[ps_pd_frm_rate->u4_frm_num] = u4_cur_frm_rate; |
| 195 | |
| 196 | ps_pd_frm_rate->u4_frm_num++; |
| 197 | |
| 198 | /* Increment the frame number */ |
| 199 | if (ps_pd_frm_rate->u4_tot_frm_encoded < (ps_pd_frm_rate->u4_input_frm_rate / 1000)) |
| 200 | { |
| 201 | ps_pd_frm_rate->u4_tot_frm_encoded++; |
| 202 | } |
| 203 | |
| 204 | /* Reset frm_num to zero */ |
| 205 | if (ps_pd_frm_rate->u4_frm_num >= (ps_pd_frm_rate->u4_input_frm_rate / 1000)) |
| 206 | { |
| 207 | ps_pd_frm_rate->u4_frm_num = 0; |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | ******************************************************************************* |
| 213 | * |
| 214 | * @brief returns average frame rate in 1 sec duration |
| 215 | * |
| 216 | * @par Description |
| 217 | * Averages the last N frame in period(1 sec) and then gives that |
| 218 | * as the current frames frame rate. Thus this averages out the sudden |
| 219 | * variation in frame rate |
| 220 | * |
| 221 | * @param[in] ps_pd_frm_rate |
| 222 | * Handle to pull down frame rate context |
| 223 | * |
| 224 | * @returns average frame rate |
| 225 | * |
| 226 | * @remarks |
| 227 | * |
| 228 | ******************************************************************************* |
| 229 | */ |
| 230 | UWORD32 ih264e_get_pd_avg_frm_rate(pd_frm_rate_t *ps_pd_frm_rate) |
| 231 | { |
| 232 | WORD32 i; |
| 233 | WORD32 i4_avg_frm_rate = 0; |
| 234 | |
| 235 | for (i = 0; i < (WORD32) ps_pd_frm_rate->u4_tot_frm_encoded; i++) |
| 236 | { |
| 237 | i4_avg_frm_rate += ps_pd_frm_rate->u4_cur_frm_rate[i]; |
| 238 | } |
| 239 | |
| 240 | i4_avg_frm_rate = i4_avg_frm_rate / ps_pd_frm_rate->u4_tot_frm_encoded; |
| 241 | |
| 242 | return i4_avg_frm_rate; |
| 243 | } |