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 | /** Includes */ |
| 22 | #include <stdio.h> |
| 23 | #include <string.h> |
| 24 | #include "irc_datatypes.h" |
| 25 | #include "irc_mem_req_and_acq.h" |
| 26 | #include "irc_common.h" |
| 27 | #include "irc_cntrl_param.h" |
| 28 | #include "irc_fixed_point_error_bits.h" |
| 29 | #include "irc_rd_model.h" |
| 30 | #include "irc_est_sad.h" |
| 31 | #include "irc_picture_type.h" |
| 32 | #include "irc_bit_allocation.h" |
| 33 | #include "irc_trace_support.h" |
| 34 | |
| 35 | /** Macros **/ |
| 36 | #define MIN(x,y) ((x) < (y))? (x) : (y) |
| 37 | |
| 38 | /* State structure for bit allocation */ |
| 39 | typedef struct |
| 40 | { |
| 41 | /* using var_q number as it can cross 31 bits for large intra frameinterval */ |
| 42 | number_t vq_rem_bits_in_period; |
| 43 | |
| 44 | /* Storing inputs */ |
| 45 | WORD32 i4_tot_frms_in_gop; |
| 46 | |
| 47 | WORD32 i4_num_intra_frm_interval; |
| 48 | |
| 49 | WORD32 i4_bits_per_frm; |
| 50 | |
| 51 | } rem_bit_in_prd_t; |
| 52 | |
| 53 | typedef struct bit_allocation_t |
| 54 | { |
| 55 | rem_bit_in_prd_t s_rbip; |
| 56 | |
| 57 | /* A universal constant giving the relative complexity between pictures */ |
| 58 | WORD32 i2_K[MAX_PIC_TYPE]; |
| 59 | |
| 60 | /* To get a estimate of the header bits consumed */ |
| 61 | WORD32 i4_prev_frm_header_bits[MAX_PIC_TYPE]; |
| 62 | |
| 63 | WORD32 i4_bits_per_frm; |
| 64 | |
| 65 | WORD32 i4_num_gops_in_period; |
| 66 | |
| 67 | /* Num gops as set by rate control module */ |
| 68 | WORD32 i4_actual_num_gops_in_period; |
| 69 | |
| 70 | number_t vq_saved_bits; |
| 71 | |
| 72 | WORD32 i4_max_bits_per_frm[MAX_NUM_DRAIN_RATES]; |
| 73 | |
| 74 | WORD32 i4_min_bits_per_frm; |
| 75 | |
| 76 | /* Error bits module */ |
| 77 | error_bits_handle ps_error_bits; |
| 78 | |
| 79 | /* Storing frame rate */ |
| 80 | WORD32 i4_frame_rate; |
| 81 | |
| 82 | WORD32 i4_bit_rate; |
| 83 | |
| 84 | WORD32 ai4_peak_bit_rate[MAX_NUM_DRAIN_RATES]; |
| 85 | |
| 86 | } bit_allocation_t; |
| 87 | |
| 88 | static WORD32 get_number_of_frms_in_a_gop(pic_handling_handle ps_pic_handling) |
| 89 | { |
| 90 | WORD32 i4_tot_frms_in_gop = 0, i; |
| 91 | WORD32 ai4_frms_in_gop[MAX_PIC_TYPE]; |
| 92 | |
| 93 | /* Query the pic_handling struct for the rem frames in the period */ |
| 94 | irc_pic_type_get_frms_in_gop(ps_pic_handling, ai4_frms_in_gop); |
| 95 | |
| 96 | /* Get the total frms in the gop */ |
| 97 | i4_tot_frms_in_gop = 0; |
| 98 | for(i = 0; i < MAX_PIC_TYPE; i++) |
| 99 | { |
| 100 | i4_tot_frms_in_gop += ai4_frms_in_gop[i]; |
| 101 | } |
| 102 | return (i4_tot_frms_in_gop); |
| 103 | } |
| 104 | |
| 105 | static void init_rbip(rem_bit_in_prd_t *ps_rbip, |
| 106 | pic_handling_handle ps_pic_handling, |
| 107 | WORD32 i4_bits_per_frm, |
| 108 | WORD32 i4_num_intra_frm_interval) |
| 109 | { |
| 110 | WORD32 i4_tot_frms_in_gop = get_number_of_frms_in_a_gop(ps_pic_handling); |
| 111 | |
| 112 | /* rem_bits_in_period = bits_per_frm * tot_frms_in_gop * num_intra_frm_interval */ |
| 113 | { |
| 114 | number_t vq_bits_per_frm, vq_tot_frms_in_gop, vq_num_intra_frm_interval; |
| 115 | number_t *pvq_rem_bits_in_period = &ps_rbip->vq_rem_bits_in_period; |
| 116 | |
| 117 | SET_VAR_Q(vq_bits_per_frm, i4_bits_per_frm, 0); |
| 118 | SET_VAR_Q(vq_tot_frms_in_gop, i4_tot_frms_in_gop, 0); |
| 119 | SET_VAR_Q(vq_num_intra_frm_interval, i4_num_intra_frm_interval, 0); |
| 120 | |
| 121 | /* rem_bits_in_period = bits_per_frm * tot_frms_in_gop */ |
| 122 | mult32_var_q(vq_bits_per_frm, vq_tot_frms_in_gop, |
| 123 | pvq_rem_bits_in_period); |
| 124 | |
| 125 | /* rem_bits_in_period *= num_intra_frm_interval */ |
| 126 | mult32_var_q(vq_num_intra_frm_interval, pvq_rem_bits_in_period[0], |
| 127 | pvq_rem_bits_in_period); |
| 128 | } |
| 129 | |
| 130 | /* |
| 131 | * Store the total number of frames in GOP value which is |
| 132 | * used from module A |
| 133 | */ |
| 134 | ps_rbip->i4_tot_frms_in_gop = i4_tot_frms_in_gop; |
| 135 | ps_rbip->i4_num_intra_frm_interval = i4_num_intra_frm_interval; |
| 136 | ps_rbip->i4_bits_per_frm = i4_bits_per_frm; |
| 137 | } |
| 138 | |
| 139 | static void check_update_rbip(rem_bit_in_prd_t *ps_rbip, |
| 140 | pic_handling_handle ps_pic_handling) |
| 141 | { |
| 142 | /* |
| 143 | * NOTE: Intra frame interval changes after the first I frame that is |
| 144 | * encoded in a GOP |
| 145 | */ |
| 146 | WORD32 i4_new_tot_frms_in_gop = get_number_of_frms_in_a_gop( |
| 147 | ps_pic_handling); |
| 148 | |
| 149 | if(i4_new_tot_frms_in_gop != ps_rbip->i4_tot_frms_in_gop) |
| 150 | { |
| 151 | WORD32 i4_rem_frames_in_period = |
| 152 | ps_rbip->i4_num_intra_frm_interval |
| 153 | * (i4_new_tot_frms_in_gop |
| 154 | - ps_rbip->i4_tot_frms_in_gop); |
| 155 | |
| 156 | number_t vq_rem_frms_in_period, s_bits_per_frm, vq_delta_bits_in_period; |
| 157 | |
| 158 | SET_VAR_Q(vq_rem_frms_in_period, i4_rem_frames_in_period, 0); |
| 159 | SET_VAR_Q(s_bits_per_frm, ps_rbip->i4_bits_per_frm, 0); |
| 160 | |
| 161 | /* delta_bits_in_period = bits_per_frm * rem_frms_in_period */ |
| 162 | mult32_var_q(s_bits_per_frm, vq_rem_frms_in_period, |
| 163 | &vq_delta_bits_in_period); |
| 164 | |
| 165 | /* rem_bits_in_period += delta_bits_in_period */ |
| 166 | add32_var_q(vq_delta_bits_in_period, ps_rbip->vq_rem_bits_in_period, |
| 167 | &ps_rbip->vq_rem_bits_in_period); |
| 168 | } |
| 169 | /* Updated the new values */ |
| 170 | ps_rbip->i4_tot_frms_in_gop = i4_new_tot_frms_in_gop; |
| 171 | } |
| 172 | |
| 173 | static void irc_ba_update_rbip(rem_bit_in_prd_t *ps_rbip, |
| 174 | pic_handling_handle ps_pic_handling, |
| 175 | WORD32 i4_num_of_bits) |
| 176 | { |
| 177 | number_t vq_num_bits; |
| 178 | |
| 179 | check_update_rbip(ps_rbip, ps_pic_handling); |
| 180 | |
| 181 | /* rem_bits_in_period += num_of_bits */ |
| 182 | SET_VAR_Q(vq_num_bits, i4_num_of_bits, 0); |
| 183 | add32_var_q(vq_num_bits, ps_rbip->vq_rem_bits_in_period, |
| 184 | &ps_rbip->vq_rem_bits_in_period); |
| 185 | } |
| 186 | |
| 187 | static void irc_ba_change_rbip(rem_bit_in_prd_t *ps_rbip, |
| 188 | pic_handling_handle ps_pic_handling, |
| 189 | WORD32 i4_new_bits_per_frm, |
| 190 | WORD32 i4_new_num_intra_frm_interval) |
| 191 | { |
| 192 | WORD32 ai4_rem_frms_in_period[MAX_PIC_TYPE], i4_rem_frms_in_gop, i; |
| 193 | irc_pic_type_get_rem_frms_in_gop(ps_pic_handling, ai4_rem_frms_in_period); |
| 194 | |
| 195 | i4_rem_frms_in_gop = 0; |
| 196 | for(i = 0; i < MAX_PIC_TYPE; i++) |
| 197 | i4_rem_frms_in_gop += ai4_rem_frms_in_period[i]; |
| 198 | |
| 199 | if(i4_new_bits_per_frm != ps_rbip->i4_bits_per_frm) |
| 200 | { |
| 201 | WORD32 i4_rem_frms_in_period = (ps_rbip->i4_num_intra_frm_interval - 1) |
| 202 | * ps_rbip->i4_tot_frms_in_gop + i4_rem_frms_in_gop; |
| 203 | |
| 204 | number_t vq_rem_frms_in_period, vq_delta_bits_per_frm, |
| 205 | vq_delta_bits_in_period; |
| 206 | |
| 207 | /* delta_bits_per_frm = new_bits_per_frm - old_bits_per_frm */ |
| 208 | SET_VAR_Q(vq_delta_bits_per_frm, |
| 209 | (i4_new_bits_per_frm - ps_rbip->i4_bits_per_frm), 0); |
| 210 | |
| 211 | SET_VAR_Q(vq_rem_frms_in_period, i4_rem_frms_in_period, 0); |
| 212 | |
| 213 | /* delta_bits_in_period = delta_bits_per_frm * rem_frms_in_period */ |
| 214 | mult32_var_q(vq_delta_bits_per_frm, vq_rem_frms_in_period, |
| 215 | &vq_delta_bits_in_period); |
| 216 | |
| 217 | /* ps_rbip->rem_bits_in_period += delta_bits_in_period */ |
| 218 | add32_var_q(vq_delta_bits_in_period, ps_rbip->vq_rem_bits_in_period, |
| 219 | &ps_rbip->vq_rem_bits_in_period); |
| 220 | } |
| 221 | |
| 222 | if(i4_new_num_intra_frm_interval != ps_rbip->i4_num_intra_frm_interval) |
| 223 | { |
| 224 | WORD32 i4_rem_frms_in_period = ps_rbip->i4_tot_frms_in_gop |
| 225 | * (i4_new_num_intra_frm_interval |
| 226 | - ps_rbip->i4_num_intra_frm_interval); |
| 227 | |
| 228 | number_t vq_rem_frms_in_period, vq_new_bits_per_frm, |
| 229 | vq_delta_bits_in_period; |
| 230 | |
| 231 | /* new_bits_per_frm = new_new_bits_per_frm - old_new_bits_per_frm */ |
| 232 | SET_VAR_Q(vq_new_bits_per_frm, i4_new_bits_per_frm, 0); |
| 233 | |
| 234 | SET_VAR_Q(vq_rem_frms_in_period, i4_rem_frms_in_period, 0); |
| 235 | |
| 236 | /* delta_bits_in_period = new_bits_per_frm * rem_frms_in_period */ |
| 237 | mult32_var_q(vq_new_bits_per_frm, vq_rem_frms_in_period, |
| 238 | &vq_delta_bits_in_period); |
| 239 | |
| 240 | /* ps_rbip->rem_bits_in_period += delta_bits_in_period */ |
| 241 | add32_var_q(vq_delta_bits_in_period, ps_rbip->vq_rem_bits_in_period, |
| 242 | &ps_rbip->vq_rem_bits_in_period); |
| 243 | } |
| 244 | /* Update the new value */ |
| 245 | ps_rbip->i4_num_intra_frm_interval = i4_new_num_intra_frm_interval; |
| 246 | ps_rbip->i4_bits_per_frm = i4_new_bits_per_frm; |
| 247 | } |
| 248 | |
| 249 | WORD32 irc_ba_num_fill_use_free_memtab(bit_allocation_t **pps_bit_allocation, |
| 250 | itt_memtab_t *ps_memtab, |
| 251 | ITT_FUNC_TYPE_E e_func_type) |
| 252 | { |
| 253 | WORD32 i4_mem_tab_idx = 0; |
Martin Storsjo | 7313602 | 2015-06-23 14:51:06 +0300 | [diff] [blame] | 254 | bit_allocation_t s_bit_allocation_temp; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 255 | |
| 256 | /* |
| 257 | * Hack for all alloc, during which we don't have any state memory. |
| 258 | * Dereferencing can cause issues |
| 259 | */ |
| 260 | if(e_func_type == GET_NUM_MEMTAB || e_func_type == FILL_MEMTAB) |
| 261 | (*pps_bit_allocation) = &s_bit_allocation_temp; |
| 262 | |
| 263 | /*for src rate control state structure*/ |
| 264 | if(e_func_type != GET_NUM_MEMTAB) |
| 265 | { |
| 266 | fill_memtab(&ps_memtab[i4_mem_tab_idx], sizeof(bit_allocation_t), |
| 267 | ALIGN_128_BYTE, PERSISTENT, DDR); |
| 268 | use_or_fill_base(&ps_memtab[0], (void**)pps_bit_allocation, |
| 269 | e_func_type); |
| 270 | } |
| 271 | i4_mem_tab_idx++; |
| 272 | |
| 273 | i4_mem_tab_idx += irc_error_bits_num_fill_use_free_memtab( |
| 274 | &pps_bit_allocation[0]->ps_error_bits, |
| 275 | &ps_memtab[i4_mem_tab_idx], e_func_type); |
| 276 | |
| 277 | return (i4_mem_tab_idx); |
| 278 | } |
| 279 | |
| 280 | /******************************************************************************* |
| 281 | Function Name : irc_ba_init_bit_allocation |
| 282 | Description : Initialize the bit_allocation structure. |
| 283 | ******************************************************************************/ |
| 284 | void irc_ba_init_bit_allocation(bit_allocation_t *ps_bit_allocation, |
| 285 | pic_handling_handle ps_pic_handling, |
| 286 | WORD32 i4_num_intra_frm_interval, |
| 287 | WORD32 i4_bit_rate, |
| 288 | WORD32 i4_frm_rate, |
| 289 | WORD32 *i4_peak_bit_rate, |
| 290 | WORD32 i4_min_bitrate) |
| 291 | { |
| 292 | WORD32 i; |
| 293 | WORD32 i4_bits_per_frm, i4_max_bits_per_frm[MAX_NUM_DRAIN_RATES]; |
| 294 | |
| 295 | /* Calculate the bits per frame */ |
| 296 | X_PROD_Y_DIV_Z(i4_bit_rate, 1000, i4_frm_rate, i4_bits_per_frm); |
| 297 | for(i = 0; i < MAX_NUM_DRAIN_RATES; i++) |
| 298 | { |
| 299 | X_PROD_Y_DIV_Z(i4_peak_bit_rate[i], 1000, i4_frm_rate, |
| 300 | i4_max_bits_per_frm[i]); |
| 301 | } |
| 302 | /* Initialize the bits_per_frame */ |
| 303 | ps_bit_allocation->i4_bits_per_frm = i4_bits_per_frm; |
| 304 | for(i = 0; i < MAX_NUM_DRAIN_RATES; i++) |
| 305 | { |
| 306 | ps_bit_allocation->i4_max_bits_per_frm[i] = i4_max_bits_per_frm[i]; |
| 307 | } |
| 308 | X_PROD_Y_DIV_Z(i4_min_bitrate, 1000, i4_frm_rate, |
| 309 | ps_bit_allocation->i4_min_bits_per_frm); |
| 310 | |
| 311 | /* |
| 312 | * Initialize the rem_bits in period |
| 313 | * The first gop in case of an OPEN GOP may have fewer B_PICs, |
| 314 | * That condition is not taken care of |
| 315 | */ |
| 316 | init_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, i4_bits_per_frm, |
| 317 | i4_num_intra_frm_interval); |
| 318 | |
| 319 | /* Initialize the num_gops_in_period */ |
| 320 | ps_bit_allocation->i4_num_gops_in_period = i4_num_intra_frm_interval; |
| 321 | ps_bit_allocation->i4_actual_num_gops_in_period = i4_num_intra_frm_interval; |
| 322 | |
| 323 | /* Relative complexity between I and P frames */ |
| 324 | ps_bit_allocation->i2_K[I_PIC] = (1 << K_Q); |
| 325 | ps_bit_allocation->i2_K[P_PIC] = I_TO_P_RATIO; |
| 326 | ps_bit_allocation->i2_K[B_PIC] = (P_TO_B_RATIO * I_TO_P_RATIO) >> K_Q; |
| 327 | |
| 328 | /* Initialize the saved bits to 0*/ |
| 329 | SET_VAR_Q(ps_bit_allocation->vq_saved_bits, 0, 0); |
| 330 | |
| 331 | /* Update the error bits module with average bits */ |
| 332 | irc_init_error_bits(ps_bit_allocation->ps_error_bits, i4_frm_rate, |
| 333 | i4_bit_rate); |
| 334 | /* Store the input for implementing change in values */ |
| 335 | ps_bit_allocation->i4_frame_rate = i4_frm_rate; |
| 336 | ps_bit_allocation->i4_bit_rate = i4_bit_rate; |
| 337 | |
| 338 | memset(ps_bit_allocation->i4_prev_frm_header_bits, 0, sizeof(ps_bit_allocation->i4_prev_frm_header_bits)); |
| 339 | for(i=0;i<MAX_NUM_DRAIN_RATES;i++) |
| 340 | ps_bit_allocation->ai4_peak_bit_rate[i] = i4_peak_bit_rate[i]; |
| 341 | } |
| 342 | |
| 343 | /******************************************************************************* |
| 344 | Function Name : get_cur_frm_est_bits |
| 345 | Description : Based on remaining bits in period and rd_model |
| 346 | the number of bits required for the current frame is estimated. |
| 347 | ******************************************************************************/ |
| 348 | WORD32 irc_ba_get_cur_frm_est_texture_bits(bit_allocation_t *ps_bit_allocation, |
| 349 | rc_rd_model_handle *pps_rd_model, |
| 350 | est_sad_handle ps_est_sad, |
| 351 | pic_handling_handle ps_pic_handling, |
| 352 | picture_type_e e_pic_type) |
| 353 | { |
| 354 | WORD32 i, j; |
| 355 | WORD32 i4_est_texture_bits_for_frm; |
| 356 | number_t vq_rem_texture_bits; |
| 357 | number_t vq_complexity_estimate[MAX_PIC_TYPE]; |
| 358 | WORD32 i4_rem_frms_in_period[MAX_PIC_TYPE], i4_frms_in_period[MAX_PIC_TYPE]; |
| 359 | number_t vq_max_consumable_bits; |
| 360 | number_t vq_rem_frms_in_period[MAX_PIC_TYPE], vq_est_texture_bits_for_frm; |
| 361 | number_t vq_prev_hdr_bits[MAX_PIC_TYPE]; |
| 362 | |
| 363 | WORD32 complexity_est = 0; |
| 364 | |
| 365 | /* Get the rem_frms_in_gop & the frms_in_gop from the pic_type state struct */ |
| 366 | irc_pic_type_get_rem_frms_in_gop(ps_pic_handling, i4_rem_frms_in_period); |
| 367 | irc_pic_type_get_frms_in_gop(ps_pic_handling, i4_frms_in_period); |
| 368 | |
| 369 | /* Depending on the number of gops in a period, find the num_frms_in_prd */ |
| 370 | for(j = 0; j < MAX_PIC_TYPE; j++) |
| 371 | { |
| 372 | i4_rem_frms_in_period[j] += (i4_frms_in_period[j] |
| 373 | * (ps_bit_allocation->i4_num_gops_in_period - 1)); |
| 374 | i4_frms_in_period[j] *= ps_bit_allocation->i4_num_gops_in_period; |
| 375 | } |
| 376 | |
| 377 | /* Remove the header bits from the remaining bits to find how many bits you |
| 378 | can transfer.*/ |
| 379 | irc_ba_update_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, 0); |
| 380 | for(i = 0; i < MAX_PIC_TYPE; i++) |
| 381 | { |
| 382 | SET_VAR_Q(vq_rem_frms_in_period[i], i4_rem_frms_in_period[i], 0); |
| 383 | SET_VAR_Q(vq_prev_hdr_bits[i], |
| 384 | ps_bit_allocation->i4_prev_frm_header_bits[i], 0); |
| 385 | } |
| 386 | { |
| 387 | /* |
| 388 | *rem_texture_bits = rem_bits_in_period - |
| 389 | *(rem_frms_in_period[I_PIC] * prev_frm_header_bits[I_PIC]) - |
| 390 | *(rem_frms_in_period[P_PIC] * prev_frm_header_bits[P_PIC]) - |
| 391 | *(rem_frms_in_period[B_PIC] * prev_frm_header_bits[B_PIC]); |
| 392 | */ |
| 393 | number_t vq_rem_hdr_bits; |
| 394 | vq_rem_texture_bits = ps_bit_allocation->s_rbip.vq_rem_bits_in_period; |
| 395 | |
| 396 | mult32_var_q(vq_prev_hdr_bits[I_PIC], vq_rem_frms_in_period[I_PIC], |
| 397 | &vq_rem_hdr_bits); |
| 398 | sub32_var_q(vq_rem_texture_bits, vq_rem_hdr_bits, &vq_rem_texture_bits); |
| 399 | |
| 400 | mult32_var_q(vq_prev_hdr_bits[P_PIC], vq_rem_frms_in_period[P_PIC], |
| 401 | &vq_rem_hdr_bits); |
| 402 | sub32_var_q(vq_rem_texture_bits, vq_rem_hdr_bits, &vq_rem_texture_bits); |
| 403 | |
| 404 | mult32_var_q(vq_prev_hdr_bits[B_PIC], vq_rem_frms_in_period[B_PIC], |
| 405 | &vq_rem_hdr_bits); |
| 406 | sub32_var_q(vq_rem_texture_bits, vq_rem_hdr_bits, &vq_rem_texture_bits); |
| 407 | } |
| 408 | { |
| 409 | /* max_consumable_bits = |
| 410 | *(frms_in_period[I_PIC] * max_bits_per_frm[0] ) + |
| 411 | *(frms_in_period[P_PIC] + frms_in_period[B_PIC] ) * max_bits_per_frm[1]; |
| 412 | */ |
| 413 | number_t vq_max_bits, vq_max_bits_per_frm[2]; |
| 414 | |
| 415 | SET_VAR_Q(vq_max_bits_per_frm[0], |
| 416 | ps_bit_allocation->i4_max_bits_per_frm[0], 0); |
| 417 | SET_VAR_Q(vq_max_bits_per_frm[1], |
| 418 | ps_bit_allocation->i4_max_bits_per_frm[1], 0); |
| 419 | |
| 420 | mult32_var_q(vq_rem_frms_in_period[I_PIC], vq_max_bits_per_frm[0], |
| 421 | &vq_max_bits); |
| 422 | vq_max_consumable_bits = vq_max_bits; |
| 423 | |
| 424 | mult32_var_q(vq_rem_frms_in_period[P_PIC], vq_max_bits_per_frm[1], |
| 425 | &vq_max_bits); |
| 426 | add32_var_q(vq_max_bits, vq_max_consumable_bits, |
| 427 | &vq_max_consumable_bits); |
| 428 | |
| 429 | mult32_var_q(vq_rem_frms_in_period[B_PIC], vq_max_bits_per_frm[1], |
| 430 | &vq_max_bits); |
| 431 | add32_var_q(vq_max_bits, vq_max_consumable_bits, |
| 432 | &vq_max_consumable_bits); |
| 433 | } |
| 434 | |
| 435 | /* rem_texture_bits = MIN(rem_texture_bits, max_consumable_bits) */ |
| 436 | MIN_VARQ(vq_max_consumable_bits, vq_rem_texture_bits, vq_rem_texture_bits); |
| 437 | |
| 438 | /* The bits are then allocated based on the relative complexity of the |
| 439 | current frame with respect to that of the rest of the frames in period */ |
| 440 | for(i = 0; i < MAX_PIC_TYPE; i++) |
| 441 | { |
| 442 | number_t vq_lin_mod_coeff, vq_est_sad, vq_K; |
| 443 | |
| 444 | /* Getting the linear model coefficient */ |
| 445 | vq_lin_mod_coeff = irc_get_linear_coefficient(pps_rd_model[i]); |
| 446 | |
| 447 | /* Getting the estimated SAD */ |
| 448 | SET_VAR_Q(vq_est_sad, irc_get_est_sad(ps_est_sad,i), 0); |
| 449 | |
| 450 | /* Making K factor a var Q format */ |
| 451 | SET_VAR_Q(vq_K, ps_bit_allocation->i2_K[i], K_Q); |
| 452 | |
| 453 | /* Complexity_estimate = [ (lin_mod_coeff * estimated_sad) / K factor ] */ |
| 454 | mult32_var_q(vq_lin_mod_coeff, vq_est_sad, &vq_lin_mod_coeff); |
| 455 | div32_var_q(vq_lin_mod_coeff, vq_K, &vq_complexity_estimate[i]); |
| 456 | } |
| 457 | |
| 458 | /* |
| 459 | * For simple cases, one of the complexities go to zero and in those cases |
| 460 | * distribute the bits evenly among frames based on I_TO_P_RATIO |
| 461 | */ |
| 462 | |
| 463 | /* Also check the B-pictures complexity only in case they are present*/ |
| 464 | if(i4_frms_in_period[B_PIC] == 0) |
| 465 | { |
| 466 | complexity_est = (vq_complexity_estimate[I_PIC] |
| 467 | && vq_complexity_estimate[P_PIC]); |
| 468 | } |
| 469 | else |
| 470 | { |
| 471 | complexity_est = (vq_complexity_estimate[I_PIC] |
| 472 | && vq_complexity_estimate[P_PIC] |
| 473 | && vq_complexity_estimate[B_PIC]); |
| 474 | } |
| 475 | |
| 476 | if(complexity_est) |
| 477 | { |
| 478 | /* |
| 479 | * Estimated texture bits = |
| 480 | * (remaining bits) * (cur frm complexity) |
| 481 | * --------------------------------------- |
| 482 | * (num_i_frm*i_frm_complexity) + (num_p_frm*pfrm_complexity) |
| 483 | * + (b_frm * b_frm_cm) |
| 484 | */ |
| 485 | mult32_var_q(vq_rem_texture_bits, vq_complexity_estimate[e_pic_type], |
| 486 | &vq_rem_texture_bits); |
| 487 | |
| 488 | for(i = 0; i < MAX_PIC_TYPE; i++) |
| 489 | { |
| 490 | mult32_var_q(vq_rem_frms_in_period[i], vq_complexity_estimate[i], |
| 491 | &vq_rem_frms_in_period[i]); |
| 492 | } |
| 493 | |
| 494 | add32_var_q(vq_rem_frms_in_period[I_PIC], vq_rem_frms_in_period[P_PIC], |
| 495 | &vq_rem_frms_in_period[I_PIC]); |
| 496 | |
| 497 | add32_var_q(vq_rem_frms_in_period[I_PIC], vq_rem_frms_in_period[B_PIC], |
| 498 | &vq_rem_frms_in_period[I_PIC]); |
| 499 | |
| 500 | div32_var_q(vq_rem_texture_bits, vq_rem_frms_in_period[I_PIC], |
| 501 | &vq_est_texture_bits_for_frm); |
| 502 | |
| 503 | number_t_to_word32(vq_est_texture_bits_for_frm, |
| 504 | &i4_est_texture_bits_for_frm); |
| 505 | } |
| 506 | else |
| 507 | { |
| 508 | number_t vq_i_to_p_bit_ratio, vq_rem_frms; |
| 509 | |
| 510 | SET_VAR_Q(vq_i_to_p_bit_ratio, I_TO_P_BIT_RATIO, 0); |
| 511 | |
| 512 | /* rem_frms = ((I_TO_P_BIT_RATIO * rem_frms_in_period[I_PIC]) + |
| 513 | * rem_frms_in_period[P_PIC] + rem_frms_in_period[B_PIC]); |
| 514 | */ |
| 515 | mult32_var_q(vq_rem_frms_in_period[I_PIC], vq_i_to_p_bit_ratio, |
| 516 | &vq_rem_frms); |
| 517 | add32_var_q(vq_rem_frms_in_period[P_PIC], vq_rem_frms, &vq_rem_frms); |
| 518 | add32_var_q(vq_rem_frms_in_period[B_PIC], vq_rem_frms, &vq_rem_frms); |
| 519 | |
| 520 | /* est_texture_bits_for_frm = rem_texture_bits / rem_frms */ |
| 521 | div32_var_q(vq_rem_texture_bits, vq_rem_frms, |
| 522 | &vq_est_texture_bits_for_frm); |
| 523 | number_t_to_word32(vq_est_texture_bits_for_frm, |
| 524 | &i4_est_texture_bits_for_frm); |
| 525 | |
| 526 | i4_est_texture_bits_for_frm = |
| 527 | (I_PIC == e_pic_type) ? |
| 528 | (i4_est_texture_bits_for_frm |
| 529 | * I_TO_P_BIT_RATIO) : |
| 530 | i4_est_texture_bits_for_frm; |
| 531 | } |
| 532 | |
| 533 | /* |
| 534 | * If the remaining bits in the period becomes negative then the estimated |
| 535 | * texture bits would also become negative. This would send a feedback to |
| 536 | * the model which may go for a toss. Thus sending the minimum possible |
| 537 | * value = 0 |
| 538 | */ |
| 539 | if(i4_est_texture_bits_for_frm < 0) |
| 540 | { |
| 541 | i4_est_texture_bits_for_frm = 0; |
| 542 | } |
| 543 | |
| 544 | return (i4_est_texture_bits_for_frm); |
| 545 | } |
| 546 | |
| 547 | /****************************************************************************** |
| 548 | Function Name : irc_ba_get_cur_frm_est_header_bits |
| 549 | Description : Based on remaining bits in period and rd_model |
| 550 | the number of bits required for the current frame is estimated. |
| 551 | ******************************************************************************/ |
| 552 | WORD32 irc_ba_get_cur_frm_est_header_bits(bit_allocation_t *ps_bit_allocation, |
| 553 | picture_type_e e_pic_type) |
| 554 | { |
| 555 | return (ps_bit_allocation->i4_prev_frm_header_bits[e_pic_type]); |
| 556 | } |
| 557 | |
| 558 | WORD32 irc_ba_get_rem_bits_in_period(bit_allocation_t *ps_bit_allocation, |
| 559 | pic_handling_handle ps_pic_handling) |
| 560 | { |
| 561 | WORD32 i4_rem_bits_in_gop = 0; |
| 562 | irc_ba_update_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, 0); |
| 563 | number_t_to_word32(ps_bit_allocation->s_rbip.vq_rem_bits_in_period, |
| 564 | &i4_rem_bits_in_gop); |
| 565 | return (i4_rem_bits_in_gop); |
| 566 | } |
| 567 | |
| 568 | /******************************************************************************* |
| 569 | Function Name : irc_ba_update_cur_frm_consumed_bits |
| 570 | Description : Based on remaining bits in period and rd_model |
| 571 | the number of bits required for the current frame is estimated. |
| 572 | ******************************************************************************/ |
| 573 | void irc_ba_update_cur_frm_consumed_bits(bit_allocation_t *ps_bit_allocation, |
| 574 | pic_handling_handle ps_pic_handling, |
| 575 | WORD32 i4_total_frame_bits, |
| 576 | WORD32 i4_model_updation_hdr_bits, |
| 577 | picture_type_e e_pic_type, |
| 578 | UWORD8 u1_is_scd, |
| 579 | WORD32 i4_last_frm_in_gop) |
| 580 | { |
| 581 | WORD32 i4_error_bits = irc_get_error_bits(ps_bit_allocation->ps_error_bits); |
| 582 | |
| 583 | /* Update the remaining bits in period */ |
| 584 | irc_ba_update_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, |
| 585 | (-i4_total_frame_bits + i4_error_bits)); |
| 586 | |
| 587 | /* |
| 588 | * Update the header bits so that it can be used as an estimate to the next |
| 589 | * frame |
| 590 | */ |
| 591 | if(u1_is_scd) |
| 592 | { |
| 593 | /* |
| 594 | * In case of SCD, even though the frame type is P, it is equivalent to |
| 595 | * a I frame and so the corresponding header bits is updated |
| 596 | */ |
| 597 | ps_bit_allocation->i4_prev_frm_header_bits[I_PIC] = |
| 598 | i4_model_updation_hdr_bits; |
| 599 | |
| 600 | #define MAX_NUM_GOPS_IN_PERIOD (3) |
| 601 | if(ps_bit_allocation->i4_num_gops_in_period < MAX_NUM_GOPS_IN_PERIOD) |
| 602 | { |
| 603 | /* |
| 604 | * Whenever there is a scene change increase the number of gops by |
| 605 | * 2 so that the number of bits allocated is not very constrained |
| 606 | */ |
| 607 | ps_bit_allocation->i4_num_gops_in_period += 2; |
| 608 | /* Add the extra bits in GOP to remaining bits in period */ |
| 609 | irc_ba_change_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, |
| 610 | ps_bit_allocation->i4_bits_per_frm, |
| 611 | ps_bit_allocation->i4_num_gops_in_period); |
| 612 | } |
| 613 | } |
| 614 | else |
| 615 | { |
| 616 | ps_bit_allocation->i4_prev_frm_header_bits[e_pic_type] = |
| 617 | i4_model_updation_hdr_bits; |
| 618 | } |
| 619 | |
| 620 | if(i4_last_frm_in_gop) |
| 621 | { |
| 622 | WORD32 i4_num_bits_in_a_gop = get_number_of_frms_in_a_gop( |
| 623 | ps_pic_handling) * ps_bit_allocation->i4_bits_per_frm; |
| 624 | /* |
| 625 | * If the number of gops in period has been increased due to scene |
| 626 | * change, slowly bring in down across the gops |
| 627 | */ |
| 628 | if(ps_bit_allocation->i4_num_gops_in_period |
| 629 | > ps_bit_allocation->i4_actual_num_gops_in_period) |
| 630 | { |
| 631 | ps_bit_allocation->i4_num_gops_in_period--; |
| 632 | irc_ba_change_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, |
| 633 | ps_bit_allocation->i4_bits_per_frm, |
| 634 | ps_bit_allocation->i4_num_gops_in_period); |
| 635 | } |
| 636 | /* |
| 637 | * If rem_bits_in_period < 0 decrease the number of bits allocated for |
| 638 | * the next period else increase it |
| 639 | */ |
| 640 | irc_ba_update_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, |
| 641 | i4_num_bits_in_a_gop); |
| 642 | } |
| 643 | /* Update the lower modules */ |
| 644 | irc_update_error_bits(ps_bit_allocation->ps_error_bits); |
| 645 | } |
| 646 | |
| 647 | void irc_ba_change_remaining_bits_in_period(bit_allocation_t *ps_bit_allocation, |
| 648 | pic_handling_handle ps_pic_handling, |
| 649 | WORD32 i4_bit_rate, |
| 650 | WORD32 i4_frame_rate, |
| 651 | WORD32 *i4_peak_bit_rate) |
| 652 | { |
| 653 | WORD32 i4_new_avg_bits_per_frm; |
| 654 | WORD32 i4_new_peak_bits_per_frm[MAX_NUM_DRAIN_RATES]; |
| 655 | WORD32 i4_rem_frms_in_period[MAX_PIC_TYPE]; |
| 656 | int i; |
| 657 | |
| 658 | /* Calculate the new per frame bits */ |
| 659 | X_PROD_Y_DIV_Z(i4_bit_rate, 1000, i4_frame_rate, i4_new_avg_bits_per_frm); |
| 660 | for(i = 0; i < MAX_NUM_DRAIN_RATES; i++) |
| 661 | { |
| 662 | X_PROD_Y_DIV_Z(i4_peak_bit_rate[i], 1000, i4_frame_rate, |
| 663 | i4_new_peak_bits_per_frm[i]); |
| 664 | } |
| 665 | |
| 666 | for(i = 0; i < MAX_NUM_DRAIN_RATES; i++) |
| 667 | { |
| 668 | ps_bit_allocation->i4_max_bits_per_frm[i] = i4_new_peak_bits_per_frm[i]; |
| 669 | } |
| 670 | |
| 671 | /* |
| 672 | * Get the rem_frms_in_prd & the frms_in_prd from the pic_type state |
| 673 | * struct |
| 674 | */ |
| 675 | irc_pic_type_get_rem_frms_in_gop(ps_pic_handling, i4_rem_frms_in_period); |
| 676 | |
| 677 | /* |
| 678 | * If the difference > 0(/ <0), the remaining bits in period needs to be |
| 679 | * increased(/decreased) based on the remaining number of frames |
| 680 | */ |
| 681 | irc_ba_change_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, |
| 682 | i4_new_avg_bits_per_frm, |
| 683 | ps_bit_allocation->i4_num_gops_in_period); |
| 684 | |
| 685 | /* Update the new average bits per frame */ |
| 686 | ps_bit_allocation->i4_bits_per_frm = i4_new_avg_bits_per_frm; |
| 687 | /* change the lower modules state */ |
| 688 | irc_change_bitrate_in_error_bits(ps_bit_allocation->ps_error_bits, |
| 689 | i4_bit_rate); |
| 690 | irc_change_frm_rate_in_error_bits(ps_bit_allocation->ps_error_bits, |
| 691 | i4_frame_rate); |
| 692 | |
| 693 | /* Store the modified frame_rate */ |
| 694 | ps_bit_allocation->i4_frame_rate = i4_frame_rate; |
| 695 | ps_bit_allocation->i4_bit_rate = i4_bit_rate; |
| 696 | for(i = 0; i < MAX_NUM_DRAIN_RATES; i++) |
| 697 | ps_bit_allocation->ai4_peak_bit_rate[i] = i4_peak_bit_rate[i]; |
| 698 | } |
| 699 | |
| 700 | void irc_ba_change_ba_peak_bit_rate(bit_allocation_t *ps_bit_allocation, |
| 701 | WORD32 *ai4_peak_bit_rate) |
| 702 | { |
| 703 | WORD32 i; |
| 704 | |
| 705 | /* Calculate the bits per frame */ |
| 706 | for(i = 0; i < MAX_NUM_DRAIN_RATES; i++) |
| 707 | { |
| 708 | X_PROD_Y_DIV_Z(ai4_peak_bit_rate[i], 1000, |
| 709 | ps_bit_allocation->i4_frame_rate, |
| 710 | ps_bit_allocation->i4_max_bits_per_frm[i]); |
| 711 | ps_bit_allocation->ai4_peak_bit_rate[i] = ai4_peak_bit_rate[i]; |
| 712 | } |
| 713 | } |
| 714 | |
| 715 | /****************************************************************************** |
| 716 | * @brief Modifies the remaining bit in period for the gop which has fif. |
| 717 | * since fif would cause a new gop to be created, we need to add the number |
| 718 | * of encoded frames in the fif GOP worth of bits to remaining bits in |
| 719 | * period |
| 720 | ******************************************************************************/ |
| 721 | void irc_ba_change_rem_bits_in_prd_at_force_I_frame(bit_allocation_t *ps_bit_allocation, |
| 722 | pic_handling_handle ps_pic_handling) |
| 723 | { |
| 724 | WORD32 i4_frms_in_period; |
| 725 | i4_frms_in_period = irc_pic_type_get_frms_in_gop_force_I_frm( |
| 726 | ps_pic_handling); |
| 727 | irc_ba_update_rbip(&ps_bit_allocation->s_rbip, ps_pic_handling, |
| 728 | ps_bit_allocation->i4_bits_per_frm * i4_frms_in_period); |
| 729 | } |
| 730 | |
| 731 | void irc_ba_check_and_update_bit_allocation(bit_allocation_t *ps_bit_allocation, |
| 732 | pic_handling_handle ps_pic_handling, |
| 733 | WORD32 i4_cur_buf_size, |
| 734 | WORD32 i4_max_buf_size, |
| 735 | WORD32 i4_max_bits_inflow_per_frm, |
| 736 | WORD32 i4_tot_frame_bits) |
| 737 | { |
| 738 | |
| 739 | number_t vq_max_drain_bits, vq_extra_bits, vq_less_bits, |
| 740 | vq_allocated_saved_bits, vq_min_bits_for_period; |
| 741 | WORD32 i4_num_frms_in_period = get_number_of_frms_in_a_gop(ps_pic_handling); |
| 742 | number_t vq_rem_bits_in_period, vq_num_frms_in_period, vq_zero; |
| 743 | WORD32 b_rem_bits_gt_max_drain, b_rem_bits_lt_min_bits, |
| 744 | b_saved_bits_gt_zero; |
| 745 | rem_bit_in_prd_t *ps_rbip = &ps_bit_allocation->s_rbip; |
| 746 | |
| 747 | UNUSED(i4_cur_buf_size); |
| 748 | UNUSED(i4_max_buf_size); |
| 749 | UNUSED(i4_tot_frame_bits); |
| 750 | |
| 751 | /* |
| 752 | * If the remaining bits is greater than what can be drained in that period |
| 753 | * Clip the remaining bits in period to the maximum it can drain in that |
| 754 | * period with the error of current buffer size.Accumulate the saved bits |
| 755 | * if any. else if the remaining bits is lesser than the minimum bit rate |
| 756 | * promised in that period Add the excess bits to remaining bits in period |
| 757 | * and reduce it from the saved bits Else Provide the extra bits from the |
| 758 | * "saved bits pool". |
| 759 | */ |
| 760 | /* |
| 761 | * max_drain_bits = num_gops_in_period * num_frms_in_period * |
| 762 | * * max_bits_inflow_per_frm |
| 763 | */ |
| 764 | SET_VAR_Q(vq_num_frms_in_period, |
| 765 | (ps_bit_allocation->i4_num_gops_in_period * i4_num_frms_in_period), |
| 766 | 0); |
| 767 | SET_VAR_Q(vq_max_drain_bits, i4_max_bits_inflow_per_frm, 0); |
| 768 | SET_VAR_Q(vq_zero, 0, 0); |
| 769 | mult32_var_q(vq_max_drain_bits, vq_num_frms_in_period, &vq_max_drain_bits); |
| 770 | |
| 771 | /* |
| 772 | * min_bits_for_period = num_gops_in_period * num_frms_in_period * |
| 773 | * min_bits_per_frm |
| 774 | */ |
| 775 | SET_VAR_Q(vq_min_bits_for_period, ps_bit_allocation->i4_min_bits_per_frm, |
| 776 | 0); |
| 777 | mult32_var_q(vq_min_bits_for_period, vq_num_frms_in_period, |
| 778 | &vq_min_bits_for_period); |
| 779 | |
| 780 | vq_rem_bits_in_period = ps_rbip->vq_rem_bits_in_period; |
| 781 | |
| 782 | /* Evaluate rem_bits_in_period > max_drain_bits */ |
| 783 | VQ_A_GT_VQ_B(ps_rbip->vq_rem_bits_in_period, vq_max_drain_bits, |
| 784 | b_rem_bits_gt_max_drain); |
| 785 | |
| 786 | /* Evaluate rem_bits_in_period < min_bits_for_period */ |
| 787 | VQ_A_LT_VQ_B(ps_rbip->vq_rem_bits_in_period, vq_min_bits_for_period, |
| 788 | b_rem_bits_lt_min_bits); |
| 789 | |
| 790 | /* Evaluate saved_bits > 0 */ |
| 791 | VQ_A_LT_VQ_B(ps_bit_allocation->vq_saved_bits, vq_zero, |
| 792 | b_saved_bits_gt_zero); |
| 793 | |
| 794 | /* (i4_rem_bits_in_period > i4_max_drain_bits) */ |
| 795 | if(b_rem_bits_gt_max_drain) |
| 796 | { |
| 797 | /* extra_bits = rem_bits_in_period - max_drain_bits */ |
| 798 | sub32_var_q(ps_rbip->vq_rem_bits_in_period, vq_max_drain_bits, |
| 799 | &vq_extra_bits); |
| 800 | |
| 801 | /* saved_bits += extra_bits */ |
| 802 | add32_var_q(ps_bit_allocation->vq_saved_bits, vq_extra_bits, |
| 803 | &ps_bit_allocation->vq_saved_bits); |
| 804 | |
| 805 | /* rem_bits_in_period = vq_max_drain_bits */ |
| 806 | ps_rbip->vq_rem_bits_in_period = vq_max_drain_bits; |
| 807 | } |
| 808 | else if(b_rem_bits_lt_min_bits) |
| 809 | { |
| 810 | /* extra_bits(-ve) = rem_bits_in_period - i4_min_bits_for_period */ |
| 811 | sub32_var_q(ps_rbip->vq_rem_bits_in_period, vq_min_bits_for_period, |
| 812 | &vq_extra_bits); |
| 813 | |
| 814 | /* saved_bits += extra_bits(-ve) */ |
| 815 | add32_var_q(ps_bit_allocation->vq_saved_bits, vq_extra_bits, |
| 816 | &ps_bit_allocation->vq_saved_bits); |
| 817 | |
| 818 | /* rem_bits_in_period = min_bits_for_period */ |
| 819 | ps_rbip->vq_rem_bits_in_period = vq_min_bits_for_period; |
| 820 | } |
| 821 | else if(b_saved_bits_gt_zero) |
| 822 | { |
| 823 | /* less_bits = max_drain_bits - _rem_bits_in_period */ |
| 824 | sub32_var_q(vq_max_drain_bits, vq_rem_bits_in_period, &vq_less_bits); |
| 825 | |
| 826 | /* allocated_saved_bits = MIN (less_bits, saved_bits) */ |
| 827 | MIN_VARQ(ps_bit_allocation->vq_saved_bits, vq_less_bits, |
| 828 | vq_allocated_saved_bits); |
| 829 | |
| 830 | /* rem_bits_in_period += allocted_save_bits */ |
| 831 | add32_var_q(ps_rbip->vq_rem_bits_in_period, vq_allocated_saved_bits, |
| 832 | &ps_rbip->vq_rem_bits_in_period); |
| 833 | |
| 834 | /* saved_bits -= allocted_save_bits */ |
| 835 | sub32_var_q(ps_bit_allocation->vq_saved_bits, vq_allocated_saved_bits, |
| 836 | &ps_bit_allocation->vq_saved_bits); |
| 837 | } |
| 838 | return; |
| 839 | } |
| 840 | |
| 841 | WORD32 irc_ba_get_frame_rate(bit_allocation_t *ps_bit_allocation) |
| 842 | { |
| 843 | return (ps_bit_allocation->i4_frame_rate); |
| 844 | } |
| 845 | |
| 846 | WORD32 irc_ba_get_bit_rate(bit_allocation_t *ps_bit_allocation) |
| 847 | { |
| 848 | return (ps_bit_allocation->i4_bit_rate); |
| 849 | } |
| 850 | |
| 851 | void irc_ba_get_peak_bit_rate(bit_allocation_t *ps_bit_allocation, |
| 852 | WORD32 *pi4_peak_bit_rate) |
| 853 | { |
| 854 | WORD32 i; |
| 855 | for(i = 0; i < MAX_NUM_DRAIN_RATES; i++) |
| 856 | { |
| 857 | pi4_peak_bit_rate[i] = ps_bit_allocation->ai4_peak_bit_rate[i]; |
| 858 | } |
| 859 | } |