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_rate_control.c |
| 25 | * |
| 26 | * @brief |
| 27 | * Contains api function definitions for h264 rate control |
| 28 | * |
| 29 | * @author |
| 30 | * ittiam |
| 31 | * |
| 32 | * @par List of Functions: |
| 33 | * - ih264e_rc_init() |
| 34 | * - ih264e_rc_get_picture_details() |
| 35 | * - ih264e_rc_pre_enc() |
| 36 | * - ih264e_update_rc_mb_info() |
| 37 | * - ih264e_rc_get_buffer_status() |
| 38 | * - ih264e_rc_post_enc() |
| 39 | * - ih264e_update_rc_bits_info() |
| 40 | * |
| 41 | * @remarks |
| 42 | * None |
| 43 | * |
| 44 | ******************************************************************************* |
| 45 | */ |
| 46 | |
| 47 | /*****************************************************************************/ |
| 48 | /* File Includes */ |
| 49 | /*****************************************************************************/ |
| 50 | |
| 51 | /* User include files */ |
| 52 | #include "irc_datatypes.h" |
| 53 | #include "iv2.h" |
| 54 | #include "ive2.h" |
| 55 | #include "ih264e.h" |
| 56 | #include "ih264_defs.h" |
| 57 | #include "ih264_macros.h" |
| 58 | #include "ih264_structs.h" |
| 59 | #include "ih264_trans_quant_itrans_iquant.h" |
| 60 | #include "ih264_inter_pred_filters.h" |
| 61 | #include "ih264_mem_fns.h" |
| 62 | #include "ih264_padding.h" |
| 63 | #include "ih264_intra_pred_filters.h" |
| 64 | #include "ih264_deblk_edge_filters.h" |
| 65 | #include "ih264_common_tables.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 66 | #include "ih264_cabac_tables.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 67 | #include "ih264e_defs.h" |
| 68 | #include "ih264e_globals.h" |
| 69 | #include "irc_mem_req_and_acq.h" |
| 70 | #include "irc_cntrl_param.h" |
| 71 | #include "irc_frame_info_collector.h" |
| 72 | #include "irc_rate_control_api.h" |
| 73 | #include "ih264e_time_stamp.h" |
| 74 | #include "ih264e_modify_frm_rate.h" |
| 75 | #include "ih264e_rate_control.h" |
| 76 | #include "ih264e_error.h" |
| 77 | #include "ih264e_bitstream.h" |
| 78 | #include "ime_distortion_metrics.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 79 | #include "ime_defs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 80 | #include "ime_structs.h" |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 81 | #include "ih264e_cabac_structs.h" |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 82 | #include "ih264e_structs.h" |
| 83 | #include "ih264e_utils.h" |
| 84 | #include "irc_trace_support.h" |
| 85 | |
| 86 | |
| 87 | /*****************************************************************************/ |
| 88 | /* Function Definitions */ |
| 89 | /*****************************************************************************/ |
| 90 | |
| 91 | /** |
| 92 | ******************************************************************************* |
| 93 | * |
| 94 | * @brief This function does nothing |
| 95 | * |
| 96 | * @par Description |
| 97 | * This function does nothing |
| 98 | * |
| 99 | * @param[in] variadic function |
| 100 | |
| 101 | * @returns none |
| 102 | * |
| 103 | * @remarks This function is used by the rc library for debugging purposes. |
| 104 | * However this function was not part of rc library. So this is defined here |
| 105 | * to resolve link issues. |
| 106 | * |
| 107 | ******************************************************************************* |
| 108 | */ |
| 109 | int trace_printf(const WORD8 *format, ...) |
| 110 | { |
| 111 | UNUSED(format); |
| 112 | return(0); |
| 113 | }; |
| 114 | |
| 115 | /** |
| 116 | ******************************************************************************* |
| 117 | * |
| 118 | * @brief |
| 119 | * This function initializes rate control context and variables |
| 120 | * |
| 121 | * @par Description |
| 122 | * This function initializes rate control type, source and target frame rate, |
| 123 | * average and peak bitrate, intra-inter frame interval and initial |
| 124 | * quantization parameter |
| 125 | * |
| 126 | * @param[in] pv_rc_api |
| 127 | * Handle to rate control api |
| 128 | * |
| 129 | * @param[in] pv_frame_time |
| 130 | * Handle to frame time context |
| 131 | * |
| 132 | * @param[in] pv_time_stamp |
| 133 | * Handle to time stamp context |
| 134 | * |
| 135 | * @param[in] pv_pd_frm_rate |
| 136 | * Handle to pull down frame time context |
| 137 | * |
| 138 | * @param[in] u4_max_frm_rate |
| 139 | * Maximum frame rate |
| 140 | * |
| 141 | * @param[in] u4_src_frm_rate |
| 142 | * Source frame rate |
| 143 | * |
| 144 | * @param[in] u4_tgt_frm_rate |
| 145 | * Target frame rate |
| 146 | * |
| 147 | * @param[in] e_rate_control_type |
| 148 | * Rate control type |
| 149 | * |
| 150 | * @param[in] u4_avg_bit_rate |
| 151 | * Average bit rate |
| 152 | * |
| 153 | * @param[in] u4_peak_bit_rate |
| 154 | * Peak bit rate |
| 155 | * |
| 156 | * @param[in] u4_max_delay |
| 157 | * Maximum delay between frames |
| 158 | * |
| 159 | * @param[in] u4_intra_frame_interval |
| 160 | * Intra frame interval |
| 161 | * |
| 162 | * @param[in] pu1_init_qp |
| 163 | * Initial qp |
| 164 | * |
| 165 | * @param[in] i4_max_inter_frm_int |
| 166 | * Maximum inter frame interval |
| 167 | * |
| 168 | * @param[in] pu1_min_max_qp |
| 169 | * Array of min/max qp |
| 170 | * |
| 171 | * @param[in] u1_profile_level |
| 172 | * Encoder profile level |
| 173 | * |
| 174 | * @returns none |
| 175 | * |
| 176 | * @remarks |
| 177 | * |
| 178 | ******************************************************************************* |
| 179 | */ |
| 180 | void ih264e_rc_init(void *pv_rc_api, |
| 181 | void *pv_frame_time, |
| 182 | void *pv_time_stamp, |
| 183 | void *pv_pd_frm_rate, |
| 184 | UWORD32 u4_max_frm_rate, |
| 185 | UWORD32 u4_src_frm_rate, |
| 186 | UWORD32 u4_tgt_frm_rate, |
| 187 | rc_type_e e_rate_control_type, |
| 188 | UWORD32 u4_avg_bit_rate, |
| 189 | UWORD32 u4_peak_bit_rate, |
| 190 | UWORD32 u4_max_delay, |
| 191 | UWORD32 u4_intra_frame_interval, |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 192 | WORD32 i4_inter_frm_int, |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 193 | UWORD8 *pu1_init_qp, |
| 194 | WORD32 i4_max_inter_frm_int, |
| 195 | UWORD8 *pu1_min_max_qp, |
| 196 | UWORD8 u1_profile_level) |
| 197 | { |
| 198 | // UWORD8 u1_is_mb_level_rc_on = 0; |
| 199 | UWORD32 au4_peak_bit_rate[2] = {0,0}; |
| 200 | UWORD32 u4_min_bit_rate = 0; |
Harinarayanan K K | aad4587 | 2015-06-26 15:20:33 +0530 | [diff] [blame] | 201 | WORD32 i4_is_gop_closed = 1; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 202 | // WORD32 i4_use_est_intra_sad = 1; |
| 203 | UWORD32 u4_src_ticks = 0; |
| 204 | UWORD32 u4_tgt_ticks = 0; |
| 205 | UWORD8 u1_level_idx = ih264e_get_lvl_idx(u1_profile_level); |
| 206 | UWORD32 u4_max_cpb_size = 1200 * gas_ih264_lvl_tbl[u1_level_idx].u4_max_cpb_size; |
| 207 | |
| 208 | /* Fill the params needed for the RC init */ |
| 209 | if (e_rate_control_type == CBR_NLDRC) |
| 210 | { |
| 211 | au4_peak_bit_rate[0] = u4_avg_bit_rate; |
| 212 | au4_peak_bit_rate[1] = u4_avg_bit_rate; |
| 213 | } |
| 214 | else |
| 215 | { |
| 216 | au4_peak_bit_rate[0] = u4_peak_bit_rate; |
| 217 | au4_peak_bit_rate[1] = u4_peak_bit_rate; |
| 218 | } |
| 219 | |
| 220 | /* Initialize frame time computation module*/ |
| 221 | ih264e_init_frame_time(pv_frame_time, |
| 222 | u4_src_frm_rate, /* u4_src_frm_rate */ |
| 223 | u4_tgt_frm_rate); /* u4_tgt_frm_rate */ |
| 224 | |
| 225 | /* Initialize the pull_down frame rate */ |
| 226 | ih264e_init_pd_frm_rate(pv_pd_frm_rate, |
| 227 | u4_src_frm_rate); /* u4_input_frm_rate */ |
| 228 | |
| 229 | /* Initialize time stamp structure */ |
| 230 | ih264e_init_time_stamp(pv_time_stamp, |
| 231 | u4_max_frm_rate, /* u4_max_frm_rate */ |
| 232 | u4_src_frm_rate); /* u4_src_frm_rate */ |
| 233 | |
| 234 | u4_src_ticks = ih264e_frame_time_get_src_ticks(pv_frame_time); |
| 235 | u4_tgt_ticks = ih264e_frame_time_get_tgt_ticks(pv_frame_time); |
| 236 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 237 | /* Init max_inter_frame int */ |
| 238 | i4_max_inter_frm_int = (i4_inter_frm_int == 1) ? 2 : (i4_inter_frm_int + 2); |
| 239 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 240 | /* Initialize the rate control */ |
| 241 | irc_initialise_rate_control(pv_rc_api, /* RC handle */ |
| 242 | e_rate_control_type, /* RC algo type */ |
| 243 | 0, /* MB activity on/off */ |
| 244 | u4_avg_bit_rate, /* Avg Bitrate */ |
| 245 | au4_peak_bit_rate, /* Peak bitrate array[2]:[I][P] */ |
| 246 | u4_min_bit_rate, /* Min Bitrate */ |
| 247 | u4_src_frm_rate, /* Src frame_rate */ |
| 248 | u4_max_delay, /* Max buffer delay */ |
| 249 | u4_intra_frame_interval, /* Intra frm_interval */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 250 | i4_inter_frm_int, /* Inter frame interval */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 251 | pu1_init_qp, /* Init QP array[3]:[I][P][B] */ |
| 252 | u4_max_cpb_size, /* Max VBV/CPB Buffer Size */ |
| 253 | i4_max_inter_frm_int, /* Max inter frm_interval */ |
| 254 | i4_is_gop_closed, /* Open/Closed GOP */ |
| 255 | pu1_min_max_qp, /* Min-max QP array[6]:[Imax][Imin][Pmax][Pmin][Bmax][Bmin] */ |
| 256 | 0, /* How to calc the I-frame estimated_sad */ |
| 257 | u4_src_ticks, /* Src_ticks = LCM(src_frm_rate,tgt_frm_rate)/src_frm_rate */ |
| 258 | u4_tgt_ticks); /* Tgt_ticks = LCM(src_frm_rate,tgt_frm_rate)/tgt_frm_rate */ |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | ******************************************************************************* |
| 263 | * |
| 264 | * @brief Function to get picture details |
| 265 | * |
| 266 | * @par Description |
| 267 | * This function returns the Picture type(I/P/B) |
| 268 | * |
| 269 | * @param[in] pv_rc_api |
| 270 | * Handle to Rate control api |
| 271 | * |
| 272 | * @returns |
| 273 | * Picture type |
| 274 | * |
| 275 | * @remarks none |
| 276 | * |
| 277 | ******************************************************************************* |
| 278 | */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 279 | picture_type_e ih264e_rc_get_picture_details(void *pv_rc_api, |
| 280 | WORD32 *pi4_pic_id, |
| 281 | WORD32 *pi4_pic_disp_order_no) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 282 | { |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 283 | picture_type_e e_rc_pic_type = P_PIC; |
| 284 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 285 | irc_get_picture_details(pv_rc_api, pi4_pic_id, pi4_pic_disp_order_no, |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 286 | &e_rc_pic_type); |
| 287 | |
| 288 | return (e_rc_pic_type); |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | ******************************************************************************* |
| 293 | * |
| 294 | * @brief Function to get rate control output before encoding |
| 295 | * |
| 296 | * @par Description |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 297 | * This function is called before queing the current frame. It decides if we should |
| 298 | * skip the current iput buffer due to frame rate mismatch. It also updates RC about |
| 299 | * the acehivble frame rate |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 300 | * |
| 301 | * @param[in] ps_rate_control_api |
| 302 | * Handle to rate control api |
| 303 | * |
| 304 | * @param[in] ps_pd_frm_rate |
| 305 | * Handle to pull down frm rate context |
| 306 | * |
| 307 | * @param[in] ps_time_stamp |
| 308 | * Handle to time stamp context |
| 309 | * |
| 310 | * @param[in] ps_frame_time |
| 311 | * Handle to frame time context |
| 312 | * |
| 313 | * @param[in] i4_delta_time_stamp |
| 314 | * Time stamp difference between frames |
| 315 | * |
| 316 | * @param[in] i4_total_mb_in_frame |
| 317 | * Total Macro Blocks in frame |
| 318 | * |
| 319 | * @param[in/out] pe_vop_coding_type |
| 320 | * Picture coding type(I/P/B) |
| 321 | * |
| 322 | * @param[in/out] pu1_frame_qp |
| 323 | * QP for current frame |
| 324 | * |
| 325 | * @returns |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 326 | * Skip or queue the current frame |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 327 | * |
| 328 | * @remarks |
| 329 | * |
| 330 | ******************************************************************************* |
| 331 | */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 332 | WORD32 ih264e_update_rc_framerates(void *ps_rate_control_api, |
| 333 | void *ps_pd_frm_rate, |
| 334 | void *ps_time_stamp, |
| 335 | void *ps_frame_time) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 336 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 337 | WORD8 i4_skip_src = 0; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 338 | UWORD32 u4_src_not_skipped_for_dts = 0; |
| 339 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 340 | /* Update the time stamp for the current frame */ |
| 341 | ih264e_update_time_stamp(ps_time_stamp); |
| 342 | |
| 343 | /* Check if a src not needs to be skipped */ |
| 344 | i4_skip_src = ih264e_should_src_be_skipped(ps_frame_time, |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 345 | 1, |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 346 | &u4_src_not_skipped_for_dts); |
| 347 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 348 | if (i4_skip_src) |
| 349 | { |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 350 | /*********************************************************************** |
| 351 | *Based on difference in source and target frame rate frames are skipped |
| 352 | ***********************************************************************/ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 353 | /*update the missing frames frm_rate with 0 */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 354 | ih264e_update_pd_frm_rate(ps_pd_frm_rate, 0); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 355 | } |
| 356 | else |
| 357 | { |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 358 | WORD32 i4_avg_frm_rate, i4_source_frame_rate; |
| 359 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 360 | i4_source_frame_rate = ih264e_frame_time_get_src_frame_rate( |
| 361 | ps_frame_time); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 362 | |
| 363 | /* Update the frame rate of the frame present with the tgt_frm_rate */ |
| 364 | /* If the frm was not skipped due to delta_time_stamp, update the |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 365 | frame_rate with double the tgt_frame_rate value, so that it makes |
| 366 | up for one of the frames skipped by the application */ |
| 367 | ih264e_update_pd_frm_rate(ps_pd_frm_rate, i4_source_frame_rate); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 368 | |
| 369 | /* Based on the update get the average frame rate */ |
| 370 | i4_avg_frm_rate = ih264e_get_pd_avg_frm_rate(ps_pd_frm_rate); |
| 371 | |
| 372 | /* Call the RC library function to change the frame_rate to the |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 373 | actually achieved frm_rate */ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 374 | irc_change_frm_rate_for_bit_alloc(ps_rate_control_api, i4_avg_frm_rate); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 375 | } |
| 376 | |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 377 | return (i4_skip_src); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | /** |
| 381 | ******************************************************************************* |
| 382 | * |
| 383 | * @brief Function to update mb info for rate control context |
| 384 | * |
| 385 | * @par Description |
| 386 | * After encoding a mb, information such as mb type, qp used, mb distortion |
| 387 | * resulted in encoding the block and so on needs to be preserved for modeling |
| 388 | * RC. This is preserved via this function call. |
| 389 | * |
| 390 | * @param[in] ps_frame_info |
| 391 | * Handle Frame info context |
| 392 | * |
| 393 | * @param[in] ps_proc |
| 394 | * Process context |
| 395 | * |
| 396 | * @returns |
| 397 | * |
| 398 | * @remarks |
| 399 | * |
| 400 | ******************************************************************************* |
| 401 | */ |
| 402 | void ih264e_update_rc_mb_info(frame_info_t *ps_frame_info, void *pv_proc) |
| 403 | { |
| 404 | /* proc ctxt */ |
| 405 | process_ctxt_t *ps_proc = pv_proc; |
| 406 | |
| 407 | /* is intra or inter */ |
| 408 | WORD32 mb_type = !ps_proc->u4_is_intra; |
| 409 | |
| 410 | /* distortion */ |
| 411 | ps_frame_info->tot_mb_sad[mb_type] += ps_proc->i4_mb_distortion; |
| 412 | |
| 413 | /* qp */ |
| 414 | ps_frame_info->qp_sum[mb_type] += gau1_h264_to_mpeg2_qmap[ps_proc->u4_mb_qp]; |
| 415 | |
| 416 | /* mb cnt */ |
| 417 | ps_frame_info->num_mbs[mb_type]++; |
| 418 | |
| 419 | /* cost */ |
| 420 | if (ps_proc->u4_is_intra) |
| 421 | { |
| 422 | ps_frame_info->intra_mb_cost_sum += ps_proc->i4_mb_cost; |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | ******************************************************************************* |
| 428 | * |
| 429 | * @brief Function to get rate control buffer status |
| 430 | * |
| 431 | * @par Description |
| 432 | * This function is used to get buffer status(underflow/overflow) by rate |
| 433 | * control module |
| 434 | * |
| 435 | * @param[in] pv_rc_api |
| 436 | * Handle to rate control api context |
| 437 | * |
| 438 | * @param[in] i4_total_frame_bits |
| 439 | * Total frame bits |
| 440 | * |
| 441 | * @param[in] u1_pic_type |
| 442 | * Picture type |
| 443 | * |
| 444 | * @param[in] pi4_num_bits_to_prevent_vbv_underflow |
| 445 | * Number of bits to prevent underflow |
| 446 | * |
| 447 | * @param[out] pu1_is_enc_buf_overflow |
| 448 | * Buffer overflow indication flag |
| 449 | * |
| 450 | * @param[out] pu1_is_enc_buf_underflow |
| 451 | * Buffer underflow indication flag |
| 452 | * |
| 453 | * @returns |
| 454 | * |
| 455 | * @remarks |
| 456 | * |
| 457 | ******************************************************************************* |
| 458 | */ |
| 459 | void ih264e_rc_get_buffer_status(void *pv_rc_api, |
| 460 | WORD32 i4_total_frame_bits, |
| 461 | picture_type_e e_pic_type, |
| 462 | WORD32 *pi4_num_bits_to_prevent_vbv_underflow, |
| 463 | UWORD8 *pu1_is_enc_buf_overflow, |
| 464 | UWORD8 *pu1_is_enc_buf_underflow) |
| 465 | { |
| 466 | vbv_buf_status_e e_vbv_buf_status = VBV_NORMAL; |
| 467 | |
| 468 | e_vbv_buf_status = irc_get_buffer_status(pv_rc_api, |
| 469 | i4_total_frame_bits, |
| 470 | e_pic_type, |
| 471 | pi4_num_bits_to_prevent_vbv_underflow); |
| 472 | |
| 473 | if (e_vbv_buf_status == VBV_OVERFLOW) |
| 474 | { |
| 475 | *pu1_is_enc_buf_underflow = 1; |
| 476 | *pu1_is_enc_buf_overflow = 0; |
| 477 | } |
| 478 | else if (e_vbv_buf_status == VBV_UNDERFLOW) |
| 479 | { |
| 480 | *pu1_is_enc_buf_underflow = 0; |
| 481 | *pu1_is_enc_buf_overflow = 1; |
| 482 | } |
| 483 | else |
| 484 | { |
| 485 | *pu1_is_enc_buf_underflow = 0; |
| 486 | *pu1_is_enc_buf_overflow = 0; |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | ******************************************************************************* |
| 492 | * |
| 493 | * @brief Function to update rate control module after encoding |
| 494 | * |
| 495 | * @par Description |
| 496 | * This function is used to update the rate control module after the current |
| 497 | * frame encoding is done with details such as bits consumed, SAD for I/P/B, |
| 498 | * intra cost ,mb type and other |
| 499 | * |
| 500 | * @param[in] ps_rate_control_api |
| 501 | * Handle to rate control api context |
| 502 | * |
| 503 | * @param[in] ps_frame_info |
| 504 | * Handle to frame info context |
| 505 | * |
| 506 | * @param[in] ps_pd_frm_rate |
| 507 | * Handle to pull down frame rate context |
| 508 | * |
| 509 | * @param[in] ps_time_stamp |
| 510 | * Handle to time stamp context |
| 511 | * |
| 512 | * @param[in] ps_frame_time |
| 513 | * Handle to frame time context |
| 514 | * |
| 515 | * @param[in] i4_total_mb_in_frame |
| 516 | * Total mb in frame |
| 517 | * |
| 518 | * @param[in] pe_vop_coding_type |
| 519 | * Picture coding type |
| 520 | * |
| 521 | * @param[in] i4_is_first_frame |
| 522 | * Is first frame |
| 523 | * |
| 524 | * @param[in] pi4_is_post_encode_skip |
| 525 | * Post encoding skip flag |
| 526 | * |
| 527 | * @param[in] u1_frame_qp |
| 528 | * Frame qp |
| 529 | * |
| 530 | * @param[in] pi4_num_intra_in_prev_frame |
| 531 | * Numberf of intra mbs in previous frame |
| 532 | * |
| 533 | * @param[in] pi4_avg_activity |
| 534 | * Average activity |
| 535 | * |
| 536 | * @returns |
| 537 | * |
| 538 | * @remarks |
| 539 | * |
| 540 | ******************************************************************************* |
| 541 | */ |
| 542 | WORD32 ih264e_rc_post_enc(void * ps_rate_control_api, |
| 543 | frame_info_t *ps_frame_info, |
| 544 | void * ps_pd_frm_rate, |
| 545 | void * ps_time_stamp, |
| 546 | void * ps_frame_time, |
| 547 | WORD32 i4_total_mb_in_frame, |
| 548 | picture_type_e *pe_vop_coding_type, |
| 549 | WORD32 i4_is_first_frame, |
| 550 | WORD32 *pi4_is_post_encode_skip, |
| 551 | UWORD8 u1_frame_qp, |
| 552 | WORD32 *pi4_num_intra_in_prev_frame, |
| 553 | WORD32 *pi4_avg_activity) |
| 554 | { |
| 555 | /* Variables for the update_frm_level_info */ |
| 556 | WORD32 ai4_tot_mb_in_type[MAX_MB_TYPE]; |
| 557 | WORD32 ai4_tot_mb_type_qp[MAX_MB_TYPE] = {0, 0}; |
| 558 | WORD32 ai4_mb_type_sad[MAX_MB_TYPE] = {0, 0}; |
| 559 | WORD32 ai4_mb_type_tex_bits[MAX_MB_TYPE] = {0, 0}; |
| 560 | WORD32 i4_total_frame_bits = 0; |
| 561 | WORD32 i4_total_hdr_bits = 0; |
| 562 | WORD32 i4_total_texturebits; |
| 563 | WORD32 i4_avg_mb_activity = 0; |
| 564 | WORD32 i4_intra_frm_cost = 0; |
| 565 | UWORD8 u1_is_scd = 0; |
| 566 | WORD32 i4_cbr_bits_to_stuff = 0; |
| 567 | UWORD32 u4_num_intra_in_prev_frame = *pi4_num_intra_in_prev_frame; |
| 568 | UNUSED(ps_pd_frm_rate); |
| 569 | UNUSED(ps_time_stamp); |
| 570 | UNUSED(ps_frame_time); |
| 571 | UNUSED(u1_frame_qp); |
| 572 | /* Accumulate RC stats */ |
| 573 | ai4_tot_mb_in_type[MB_TYPE_INTRA] = irc_fi_get_total_mb(ps_frame_info,MB_TYPE_INTRA); |
| 574 | ai4_tot_mb_in_type[MB_TYPE_INTER] = irc_fi_get_total_mb(ps_frame_info,MB_TYPE_INTER); |
| 575 | /* ai4_tot_mb_type_qp[MB_TYPE_INTRA] = 0; |
| 576 | ai4_tot_mb_type_qp[MB_TYPE_INTER] = ps_enc->pu1_h264_mpg2quant[u1_frame_qp] * i4_total_mb_in_frame;*/ |
| 577 | ai4_tot_mb_type_qp[MB_TYPE_INTRA] = irc_fi_get_total_mb_qp(ps_frame_info,MB_TYPE_INTRA); |
| 578 | ai4_tot_mb_type_qp[MB_TYPE_INTER] = irc_fi_get_total_mb_qp(ps_frame_info,MB_TYPE_INTER); |
| 579 | ai4_mb_type_sad[MB_TYPE_INTRA] = irc_fi_get_total_mb_sad(ps_frame_info,MB_TYPE_INTRA); |
| 580 | ai4_mb_type_sad[MB_TYPE_INTER] = irc_fi_get_total_mb_sad(ps_frame_info,MB_TYPE_INTER); |
| 581 | i4_intra_frm_cost = irc_fi_get_total_intra_mb_cost(ps_frame_info); |
| 582 | i4_avg_mb_activity = irc_fi_get_avg_activity(ps_frame_info); |
| 583 | i4_total_hdr_bits = irc_fi_get_total_header_bits(ps_frame_info); |
| 584 | i4_total_texturebits = irc_fi_get_total_mb_texture_bits(ps_frame_info,MB_TYPE_INTRA); |
| 585 | i4_total_texturebits += irc_fi_get_total_mb_texture_bits(ps_frame_info,MB_TYPE_INTER); |
| 586 | i4_total_frame_bits = i4_total_hdr_bits + i4_total_texturebits ; |
| 587 | |
| 588 | *pi4_avg_activity = i4_avg_mb_activity; |
| 589 | |
| 590 | |
| 591 | /* Texture bits are not accumulated. Hence subtracting hdr bits from total bits */ |
| 592 | ai4_mb_type_tex_bits[MB_TYPE_INTRA] = 0; |
| 593 | ai4_mb_type_tex_bits[MB_TYPE_INTER] = i4_total_frame_bits - i4_total_hdr_bits; |
| 594 | |
| 595 | /* Set post encode skip to zero */ |
| 596 | pi4_is_post_encode_skip[0]= 0; |
| 597 | |
| 598 | /* For NLDRC, get the buffer status for stuffing or skipping */ |
| 599 | if (irc_get_rc_type(ps_rate_control_api) == CBR_NLDRC) |
| 600 | { |
| 601 | WORD32 i4_get_num_bit_to_prevent_vbv_overflow; |
| 602 | UWORD8 u1_enc_buf_overflow,u1_enc_buf_underflow; |
| 603 | |
| 604 | /* Getting the buffer status */ |
| 605 | ih264e_rc_get_buffer_status(ps_rate_control_api, i4_total_frame_bits, |
| 606 | pe_vop_coding_type[0], &i4_get_num_bit_to_prevent_vbv_overflow, |
| 607 | &u1_enc_buf_overflow,&u1_enc_buf_underflow); |
| 608 | |
| 609 | /* We skip the frame if decoder buffer is underflowing. But we never skip first I frame */ |
Harinarayanan K K | 134291e | 2015-06-18 16:03:38 +0530 | [diff] [blame] | 610 | if ((u1_enc_buf_overflow == 1) && (i4_is_first_frame != 1)) |
| 611 | // if ((u1_enc_buf_overflow == 1) && (i4_is_first_frame != 0)) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 612 | { |
| 613 | irc_post_encode_frame_skip(ps_rate_control_api, (picture_type_e)pe_vop_coding_type[0]); |
| 614 | // i4_total_frame_bits = imp4_write_skip_frame_header(ps_enc); |
| 615 | i4_total_frame_bits = 0; |
| 616 | |
| 617 | *pi4_is_post_encode_skip = 1; |
| 618 | |
| 619 | /* Adjust the GOP if in case we skipped an I-frame */ |
| 620 | if (*pe_vop_coding_type == I_PIC) |
| 621 | irc_force_I_frame(ps_rate_control_api); |
| 622 | |
| 623 | /* Since this frame is skipped by writing 7 bytes header, we say this is a P frame */ |
| 624 | // *pe_vop_coding_type = P; |
| 625 | |
| 626 | /* Getting the buffer status again,to check if it underflows */ |
| 627 | irc_get_buffer_status(ps_rate_control_api, i4_total_frame_bits, |
| 628 | (picture_type_e)pe_vop_coding_type[0], &i4_get_num_bit_to_prevent_vbv_overflow); |
| 629 | |
| 630 | } |
| 631 | |
| 632 | /* In this case we stuff bytes as buffer is overflowing */ |
| 633 | if (u1_enc_buf_underflow == 1) |
| 634 | { |
| 635 | /* The stuffing function is directly pulled out from split controller workspace. |
| 636 | encode_vop_data() function makes sure alignment data is dumped at the end of a |
| 637 | frame. Split controller was identifying this alignment byte, overwriting it with |
| 638 | the stuff data and then finally aligning the buffer. Here every thing is inside |
| 639 | the DSP. So, ideally encode_vop_data needn't align, and we can start stuffing directly. |
| 640 | But in that case, it'll break the logic for a normal frame. |
| 641 | Hence for simplicity, not changing this part since it is ok to align and |
| 642 | then overwrite since stuffing is not done for every frame */ |
| 643 | i4_cbr_bits_to_stuff = irc_get_bits_to_stuff(ps_rate_control_api, i4_total_frame_bits, pe_vop_coding_type[0]); |
| 644 | |
| 645 | /* Just add extra 32 bits to make sure we don't stuff lesser */ |
| 646 | i4_cbr_bits_to_stuff += 32; |
| 647 | |
| 648 | /* We can not stuff more than the outbuf size. So have a check here */ |
| 649 | /* Add stuffed bits to total bits */ |
| 650 | i4_total_frame_bits += i4_cbr_bits_to_stuff; |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | #define ENABLE_SCD 1 |
| 655 | #if ENABLE_SCD |
| 656 | /* If number of intra MBs are more than 2/3rd of total MBs, assume it as a scene change */ |
| 657 | if ((ai4_tot_mb_in_type[MB_TYPE_INTRA] > ((2 * i4_total_mb_in_frame) / 3)) && |
| 658 | (*pe_vop_coding_type == P_PIC) && |
| 659 | (ai4_tot_mb_in_type[MB_TYPE_INTRA] > ((11 * (WORD32)u4_num_intra_in_prev_frame) / 10))) |
| 660 | { |
| 661 | u1_is_scd = 1; |
| 662 | } |
| 663 | #endif |
| 664 | |
| 665 | /* Update num intra mbs of this frame */ |
| 666 | if (pi4_is_post_encode_skip[0] == 0) |
| 667 | { |
| 668 | *pi4_num_intra_in_prev_frame = ai4_tot_mb_in_type[MB_TYPE_INTRA]; |
| 669 | } |
| 670 | |
| 671 | /* Reset intra count to zero, if u encounter an I frame */ |
| 672 | if (*pe_vop_coding_type == I_PIC) |
| 673 | { |
| 674 | *pi4_num_intra_in_prev_frame = 0; |
| 675 | } |
| 676 | |
| 677 | /* Do an update of rate control after post encode */ |
| 678 | irc_update_frame_level_info(ps_rate_control_api, /* RC state */ |
| 679 | pe_vop_coding_type[0], /* PIC type */ |
| 680 | ai4_mb_type_sad, /* SAD for [Intra/Inter] */ |
| 681 | i4_total_frame_bits, /* Total frame bits */ |
| 682 | i4_total_hdr_bits, /* header bits for */ |
| 683 | ai4_mb_type_tex_bits, /* for MB[Intra/Inter] */ |
| 684 | ai4_tot_mb_type_qp, /* for MB[Intra/Inter] */ |
| 685 | ai4_tot_mb_in_type, /* for MB[Intra/Inter] */ |
| 686 | i4_avg_mb_activity, /* Average mb activity in frame */ |
| 687 | u1_is_scd, /* Is a scene change detected */ |
| 688 | 0, /* Pre encode skip */ |
| 689 | (WORD32)i4_intra_frm_cost, /* Intra cost for frame */ |
| 690 | 0); /* Not done outside */ |
| 691 | |
| 692 | return (i4_cbr_bits_to_stuff >> 3); |
| 693 | } |
| 694 | |
| 695 | /** |
| 696 | ******************************************************************************* |
| 697 | * |
| 698 | * @brief Function to update bits consumed info to rate control context |
| 699 | * |
| 700 | * @par Description |
| 701 | * Function to update bits consume info to rate control context |
| 702 | * |
| 703 | * @param[in] ps_frame_info |
| 704 | * Frame info context |
| 705 | * |
| 706 | * @param[in] ps_entropy |
| 707 | * Entropy context |
| 708 | * |
| 709 | * @returns |
| 710 | * total bits consumed by the frame |
| 711 | * |
| 712 | * @remarks |
| 713 | * |
| 714 | ******************************************************************************* |
| 715 | */ |
| 716 | void ih264e_update_rc_bits_info(frame_info_t *ps_frame_info, void *pv_entropy) |
| 717 | { |
| 718 | entropy_ctxt_t *ps_entropy = pv_entropy; |
| 719 | |
| 720 | ps_frame_info->mb_header_bits[MB_TYPE_INTRA] += ps_entropy->u4_header_bits[MB_TYPE_INTRA]; |
| 721 | |
| 722 | ps_frame_info->mb_texture_bits[MB_TYPE_INTRA] += ps_entropy->u4_residue_bits[MB_TYPE_INTRA]; |
| 723 | |
| 724 | ps_frame_info->mb_header_bits[MB_TYPE_INTER] += ps_entropy->u4_header_bits[MB_TYPE_INTER]; |
| 725 | |
| 726 | ps_frame_info->mb_texture_bits[MB_TYPE_INTER] += ps_entropy->u4_residue_bits[MB_TYPE_INTER]; |
| 727 | |
| 728 | return; |
| 729 | } |
| 730 | |