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 | * @file |
| 23 | * ih264_dpb_mgr.c |
| 24 | * |
| 25 | * @brief |
| 26 | * Function definitions used for decoded picture buffer management |
| 27 | * |
| 28 | * @author |
| 29 | * Srinivas T |
| 30 | * |
| 31 | * @par List of Functions: |
| 32 | * - ih264_dpb_mgr_init() |
| 33 | * - ih264_dpb_mgr_sort_short_term_fields_by_frame_num() |
| 34 | * - ih264_dpb_mgr_sort_short_term_fields_by_poc_l0() |
| 35 | * - ih264_dpb_mgr_sort_short_term_fields_by_poc_l1() |
| 36 | * - ih264_dpb_mgr_sort_long_term_fields_by_frame_idx() |
| 37 | * - ih264_dpb_mgr_alternate_ref_fields() |
| 38 | * - ih264_dpb_mgr_insert_ref_field() |
| 39 | * - ih264_dpb_mgr_insert_ref_frame() |
| 40 | * - ih264_dpb_mgr_count_ref_frames() |
| 41 | * - ih264_dpb_mgr_delete_ref_frame() |
| 42 | * - ih264_dpb_mgr_delete_long_ref_fields_max_frame_idx() |
| 43 | * - ih264_dpb_mgr_delete_short_ref_frame() |
| 44 | * - ih264_dpb_mgr_delete_all_ref_frames() |
| 45 | * - ih264_dpb_mgr_reset() |
| 46 | * - ih264_dpb_mgr_release_pics() |
| 47 | * |
| 48 | * @remarks |
| 49 | * None |
| 50 | * |
| 51 | ******************************************************************************* |
| 52 | */ |
| 53 | |
| 54 | #include <stdio.h> |
| 55 | #include <stdlib.h> |
| 56 | #include <assert.h> |
| 57 | |
| 58 | #include "ih264_typedefs.h" |
| 59 | #include "ih264_defs.h" |
| 60 | #include "ih264_macros.h" |
| 61 | #include "ih264_error.h" |
| 62 | #include "ih264_structs.h" |
| 63 | #include "ih264_buf_mgr.h" |
| 64 | #include "ih264_dpb_mgr.h" |
| 65 | #include "ih264_debug.h" |
| 66 | |
| 67 | /** |
| 68 | ******************************************************************************* |
| 69 | * |
| 70 | * @brief |
| 71 | * DPB manager initializer |
| 72 | * |
| 73 | * @par Description: |
| 74 | * Initialises the DPB manager structure |
| 75 | * |
| 76 | * @param[in] ps_dpb_mgr |
| 77 | * Pointer to the DPB manager structure |
| 78 | * |
| 79 | * @returns |
| 80 | * |
| 81 | * @remarks |
| 82 | * |
| 83 | * |
| 84 | ******************************************************************************* |
| 85 | */ |
| 86 | |
| 87 | void ih264_dpb_mgr_init(dpb_mgr_t *ps_dpb_mgr) |
| 88 | { |
| 89 | UWORD32 i; |
| 90 | dpb_info_t *ps_dpb_info = ps_dpb_mgr->as_dpb_info; |
| 91 | for(i = 0; i < MAX_DPB_BUFS; i++) |
| 92 | { |
| 93 | ps_dpb_info[i].ps_prev_dpb = NULL; |
| 94 | ps_dpb_info[i].ps_pic_buf = NULL; |
| 95 | ps_dpb_mgr->as_top_field_pics[i].i4_used_as_ref = INVALID; |
| 96 | ps_dpb_mgr->as_bottom_field_pics[i].i4_used_as_ref = INVALID; |
| 97 | ps_dpb_mgr->as_top_field_pics[i].i1_field_type = INVALID; |
| 98 | ps_dpb_mgr->as_bottom_field_pics[i].i1_field_type = INVALID; |
| 99 | ps_dpb_mgr->as_top_field_pics[i].i4_long_term_frame_idx = -1; |
| 100 | ps_dpb_mgr->as_bottom_field_pics[i].i4_long_term_frame_idx = -1; |
| 101 | } |
| 102 | |
| 103 | ps_dpb_mgr->u1_num_short_term_ref_bufs = 0; |
| 104 | ps_dpb_mgr->u1_num_long_term_ref_bufs = 0; |
| 105 | ps_dpb_mgr->ps_dpb_short_term_head = NULL; |
| 106 | ps_dpb_mgr->ps_dpb_long_term_head = NULL; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | ******************************************************************************* |
| 111 | * |
| 112 | * @brief |
| 113 | * Function to sort sort term pics by frame_num. |
| 114 | * |
| 115 | * @par Description: |
| 116 | * Sorts short term fields by frame_num. For 2 fields having same frame_num, |
| 117 | * orders them based on requested first field type. |
| 118 | * |
| 119 | * @param[in] ps_dpb_mgr |
| 120 | * Pointer to the DPB manager structure |
| 121 | * |
| 122 | * @param[in] curr_frame_num |
| 123 | * frame_num of the current pic |
| 124 | * |
| 125 | * @param[in] first_field_type |
| 126 | * For complementary fields, required first field |
| 127 | * |
| 128 | * @param[in] max_frame_num |
| 129 | * Maximum frame_num allowed |
| 130 | * |
| 131 | * @returns |
| 132 | * |
| 133 | * @remarks |
| 134 | * |
| 135 | * |
| 136 | ******************************************************************************* |
| 137 | */ |
| 138 | WORD32 ih264_dpb_mgr_sort_short_term_fields_by_frame_num(dpb_mgr_t *ps_dpb_mgr, |
| 139 | WORD32 curr_frame_num, |
| 140 | WORD32 first_field_type, |
| 141 | WORD32 max_frame_num) |
| 142 | { |
| 143 | dpb_info_t *ps_dpb_node1 = ps_dpb_mgr->ps_dpb_short_term_head; |
| 144 | dpb_info_t *ps_dpb_node2; |
| 145 | WORD32 frame_num_node1; |
| 146 | WORD32 frame_num_node2; |
| 147 | pic_buf_t *ps_pic_buf; |
| 148 | |
| 149 | if(ps_dpb_node1 == NULL) |
| 150 | return -1; |
| 151 | |
| 152 | for (; ps_dpb_node1 != NULL; ps_dpb_node1 = ps_dpb_node1->ps_prev_dpb) |
| 153 | { |
| 154 | for (ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; ps_dpb_node2 != NULL; ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb) |
| 155 | { |
| 156 | frame_num_node1 = ps_dpb_node1->ps_pic_buf->i4_frame_num; |
| 157 | frame_num_node2 = ps_dpb_node2->ps_pic_buf->i4_frame_num; |
| 158 | |
| 159 | if(frame_num_node1 > curr_frame_num) |
| 160 | frame_num_node1 = frame_num_node1 - max_frame_num; |
| 161 | if(frame_num_node2 > curr_frame_num) |
| 162 | frame_num_node2 = frame_num_node2 - max_frame_num; |
| 163 | |
| 164 | if(frame_num_node1 < frame_num_node2) |
| 165 | { |
| 166 | ps_pic_buf = ps_dpb_node1->ps_pic_buf; |
| 167 | ps_dpb_node1->ps_pic_buf = ps_dpb_node2->ps_pic_buf; |
| 168 | ps_dpb_node2->ps_pic_buf = ps_pic_buf; |
| 169 | } |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * For frames and complementary field pairs, |
| 175 | * ensure first_field_type appears first in the list |
| 176 | */ |
| 177 | ps_dpb_node1 = ps_dpb_mgr->ps_dpb_short_term_head; |
| 178 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 179 | while(ps_dpb_node2 != NULL) |
| 180 | { |
| 181 | pic_buf_t *ps_pic_node1 = ps_dpb_node1->ps_pic_buf; |
| 182 | pic_buf_t *ps_pic_node2 = ps_dpb_node2->ps_pic_buf; |
| 183 | frame_num_node1 = ps_pic_node1->i4_frame_num; |
| 184 | frame_num_node2 = ps_pic_node2->i4_frame_num; |
| 185 | if(frame_num_node1 == frame_num_node2) |
| 186 | { |
| 187 | ASSERT(ps_pic_node1->i1_field_type != ps_pic_node2->i1_field_type); |
| 188 | if(ps_pic_node1->i1_field_type != first_field_type) |
| 189 | { |
| 190 | ps_dpb_node1->ps_pic_buf = ps_pic_node2; |
| 191 | ps_dpb_node2->ps_pic_buf = ps_pic_node1; |
| 192 | } |
| 193 | } |
| 194 | ps_dpb_node1 = ps_dpb_node2; |
| 195 | ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb; |
| 196 | } |
| 197 | return 0; |
| 198 | |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | ******************************************************************************* |
| 203 | * |
| 204 | * @brief |
| 205 | * Function to sort sort term pics by poc for list 0. |
| 206 | * |
| 207 | * @par Description: |
| 208 | * Orders all the pocs less than current poc in the descending order. |
| 209 | * Then orders all the pocs greater than current poc in the ascending order. |
| 210 | * |
| 211 | * @param[in] ps_dpb_mgr |
| 212 | * Pointer to the DPB manager structure |
| 213 | * |
| 214 | * @param[in] curr_poc |
| 215 | * Poc of the current pic |
| 216 | * |
| 217 | * @param[in] first_field_type |
| 218 | * For complementary fields, required first field |
| 219 | * |
| 220 | * @returns |
| 221 | * |
| 222 | * @remarks |
| 223 | * |
| 224 | * |
| 225 | ******************************************************************************* |
| 226 | */ |
| 227 | WORD32 ih264_dpb_mgr_sort_short_term_fields_by_poc_l0(dpb_mgr_t *ps_dpb_mgr, |
| 228 | WORD32 curr_poc, |
| 229 | WORD32 first_field_type) |
| 230 | { |
| 231 | dpb_info_t *ps_dpb_node1 = ps_dpb_mgr->ps_dpb_short_term_head; |
| 232 | dpb_info_t *ps_dpb_node2; |
| 233 | WORD32 poc_node1; |
| 234 | WORD32 poc_node2; |
| 235 | WORD32 frame_num_node1; |
| 236 | WORD32 frame_num_node2; |
| 237 | pic_buf_t *ps_pic_buf; |
| 238 | |
| 239 | if(ps_dpb_node1 == NULL) |
| 240 | return -1; |
| 241 | |
| 242 | /** |
| 243 | * Sort the fields by poc. |
| 244 | * All POCs less than current poc are first placed in the descending order. |
| 245 | * Then all POCs greater than current poc are placed in the ascending order. |
| 246 | */ |
| 247 | for (; ps_dpb_node1 != NULL; ps_dpb_node1 = ps_dpb_node1->ps_prev_dpb) |
| 248 | { |
| 249 | for (ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; ps_dpb_node2 != NULL; ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb) |
| 250 | { |
| 251 | poc_node1 = ps_dpb_node1->ps_pic_buf->i4_abs_poc; |
| 252 | poc_node2 = ps_dpb_node2->ps_pic_buf->i4_abs_poc; |
| 253 | ASSERT(poc_node1 != curr_poc); |
| 254 | ASSERT(poc_node2 != curr_poc); |
| 255 | if(((poc_node1 < curr_poc) && (poc_node2 > curr_poc)) || |
| 256 | ((poc_node1 < curr_poc) && (poc_node2 < curr_poc) && (poc_node1 > poc_node2)) || |
| 257 | ((poc_node1 > curr_poc) && (poc_node2 > curr_poc) && (poc_node1 < poc_node2))) |
| 258 | continue; |
| 259 | |
| 260 | ps_pic_buf = ps_dpb_node1->ps_pic_buf; |
| 261 | ps_dpb_node1->ps_pic_buf = ps_dpb_node2->ps_pic_buf; |
| 262 | ps_dpb_node2->ps_pic_buf = ps_pic_buf; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | ps_dpb_node1 = ps_dpb_mgr->ps_dpb_short_term_head; |
| 267 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 268 | while(ps_dpb_node2 != NULL) |
| 269 | { |
| 270 | pic_buf_t *ps_pic_node1 = ps_dpb_node1->ps_pic_buf; |
| 271 | pic_buf_t *ps_pic_node2 = ps_dpb_node2->ps_pic_buf; |
| 272 | frame_num_node1 = ps_pic_node1->i4_frame_num; |
| 273 | frame_num_node2 = ps_pic_node2->i4_frame_num; |
| 274 | if(frame_num_node1 == frame_num_node2) |
| 275 | { |
| 276 | ASSERT(ps_pic_node1->i1_field_type != ps_pic_node2->i1_field_type); |
| 277 | if(ps_pic_node1->i1_field_type != first_field_type) |
| 278 | { |
| 279 | ps_dpb_node1->ps_pic_buf = ps_pic_node2; |
| 280 | ps_dpb_node2->ps_pic_buf = ps_pic_node1; |
| 281 | } |
| 282 | } |
| 283 | ps_dpb_node1 = ps_dpb_node2; |
| 284 | ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb; |
| 285 | } |
| 286 | return 0; |
| 287 | |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | ******************************************************************************* |
| 292 | * |
| 293 | * @brief |
| 294 | * Function to sort sort term pics by poc for list 1. |
| 295 | * |
| 296 | * @par Description: |
| 297 | * Orders all the pocs greater than current poc in the ascending order. |
| 298 | * Then rrders all the pocs less than current poc in the descending order. |
| 299 | * |
| 300 | * @param[in] ps_dpb_mgr |
| 301 | * Pointer to the DPB manager structure |
| 302 | * |
| 303 | * @param[in] curr_poc |
| 304 | * Poc of the current pic |
| 305 | * |
| 306 | * @param[in] first_field_type |
| 307 | * For complementary fields, required first field |
| 308 | * |
| 309 | * @returns |
| 310 | * |
| 311 | * @remarks |
| 312 | * |
| 313 | * |
| 314 | ******************************************************************************* |
| 315 | */ |
| 316 | WORD32 ih264_dpb_mgr_sort_short_term_fields_by_poc_l1(dpb_mgr_t *ps_dpb_mgr, |
| 317 | WORD32 curr_poc, |
| 318 | WORD32 first_field_type) |
| 319 | { |
| 320 | dpb_info_t *ps_dpb_node1 = ps_dpb_mgr->ps_dpb_short_term_head; |
| 321 | dpb_info_t *ps_dpb_node2; |
| 322 | WORD32 poc_node1; |
| 323 | WORD32 poc_node2; |
| 324 | WORD32 frame_num_node1; |
| 325 | WORD32 frame_num_node2; |
| 326 | pic_buf_t *ps_pic_buf; |
| 327 | |
| 328 | if(ps_dpb_node1 == NULL) |
| 329 | return -1; |
| 330 | |
| 331 | /** |
| 332 | * Sort the fields by poc. |
| 333 | * All POCs greater than current poc are first placed in the ascending order. |
| 334 | * Then all POCs less than current poc are placed in the decending order. |
| 335 | */ |
| 336 | for (; ps_dpb_node1 != NULL; ps_dpb_node1 = ps_dpb_node1->ps_prev_dpb) |
| 337 | { |
| 338 | for (ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; ps_dpb_node2 != NULL; ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb) |
| 339 | { |
| 340 | poc_node1 = ps_dpb_node1->ps_pic_buf->i4_abs_poc; |
| 341 | poc_node2 = ps_dpb_node2->ps_pic_buf->i4_abs_poc; |
| 342 | ASSERT(poc_node1 != curr_poc); |
| 343 | ASSERT(poc_node2 != curr_poc); |
| 344 | if(((poc_node1 > curr_poc) && (poc_node2 < curr_poc)) || |
| 345 | ((poc_node1 < curr_poc) && (poc_node2 < curr_poc) && (poc_node1 > poc_node2)) || |
| 346 | ((poc_node1 > curr_poc) && (poc_node2 > curr_poc) && (poc_node1 < poc_node2))) |
| 347 | continue; |
| 348 | |
| 349 | ps_pic_buf = ps_dpb_node1->ps_pic_buf; |
| 350 | ps_dpb_node1->ps_pic_buf = ps_dpb_node2->ps_pic_buf; |
| 351 | ps_dpb_node2->ps_pic_buf = ps_pic_buf; |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | ps_dpb_node1 = ps_dpb_mgr->ps_dpb_short_term_head; |
| 356 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 357 | while(ps_dpb_node2 != NULL) |
| 358 | { |
| 359 | pic_buf_t *ps_pic_node1 = ps_dpb_node1->ps_pic_buf; |
| 360 | pic_buf_t *ps_pic_node2 = ps_dpb_node2->ps_pic_buf; |
| 361 | frame_num_node1 = ps_pic_node1->i4_frame_num; |
| 362 | frame_num_node2 = ps_pic_node2->i4_frame_num; |
| 363 | if(frame_num_node1 == frame_num_node2) |
| 364 | { |
| 365 | ASSERT(ps_pic_node1->i1_field_type != ps_pic_node2->i1_field_type); |
| 366 | if(ps_pic_node1->i1_field_type != first_field_type) |
| 367 | { |
| 368 | ps_dpb_node1->ps_pic_buf = ps_pic_node2; |
| 369 | ps_dpb_node2->ps_pic_buf = ps_pic_node1; |
| 370 | } |
| 371 | } |
| 372 | ps_dpb_node1 = ps_dpb_node2; |
| 373 | ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb; |
| 374 | } |
| 375 | return 0; |
| 376 | } |
| 377 | /** |
| 378 | ******************************************************************************* |
| 379 | * |
| 380 | * @brief |
| 381 | * Function to sort long term pics by long term frame idx. |
| 382 | * |
| 383 | * @par Description: |
| 384 | * Sorts long term fields by long term frame idx. For 2 fields |
| 385 | * having same frame_num, orders them based on requested first field type. |
| 386 | * |
| 387 | * @param[in] ps_dpb_mgr |
| 388 | * Pointer to the DPB manager structure |
| 389 | * |
| 390 | * @param[in] first_field_type |
| 391 | * For complementary fields, required first field |
| 392 | * |
| 393 | * @returns |
| 394 | * |
| 395 | * @remarks |
| 396 | * |
| 397 | * |
| 398 | ******************************************************************************* |
| 399 | */ |
| 400 | WORD32 ih264_dpb_mgr_sort_long_term_fields_by_frame_idx(dpb_mgr_t *ps_dpb_mgr, |
| 401 | WORD32 first_field_type) |
| 402 | { |
| 403 | dpb_info_t *ps_dpb_node1 = ps_dpb_mgr->ps_dpb_long_term_head; |
| 404 | dpb_info_t *ps_dpb_node2; |
| 405 | WORD32 frame_idx_node1; |
| 406 | WORD32 frame_idx_node2; |
| 407 | pic_buf_t *ps_pic_buf; |
| 408 | |
| 409 | if(ps_dpb_node1 == NULL) |
| 410 | return -1; |
| 411 | |
| 412 | /* Sort the fields by frame idx */ |
| 413 | for (; ps_dpb_node1 != NULL; ps_dpb_node1 = ps_dpb_node1->ps_prev_dpb) |
| 414 | { |
| 415 | for (ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; ps_dpb_node2 != NULL; ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb) |
| 416 | { |
| 417 | frame_idx_node1 = ps_dpb_node1->ps_pic_buf->i4_long_term_frame_idx; |
| 418 | frame_idx_node2 = ps_dpb_node2->ps_pic_buf->i4_long_term_frame_idx; |
| 419 | |
| 420 | if(frame_idx_node1 > frame_idx_node2) |
| 421 | { |
| 422 | ps_pic_buf = ps_dpb_node1->ps_pic_buf; |
| 423 | ps_dpb_node1->ps_pic_buf = ps_dpb_node2->ps_pic_buf; |
| 424 | ps_dpb_node2->ps_pic_buf = ps_pic_buf; |
| 425 | } |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | /** |
| 430 | * For frames and complementary field pairs, |
| 431 | * ensure first_field_type appears first in the list |
| 432 | */ |
| 433 | ps_dpb_node1 = ps_dpb_mgr->ps_dpb_long_term_head; |
| 434 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 435 | while(ps_dpb_node2 != NULL) |
| 436 | { |
| 437 | pic_buf_t *ps_pic_node1 = ps_dpb_node1->ps_pic_buf; |
| 438 | pic_buf_t *ps_pic_node2 = ps_dpb_node2->ps_pic_buf; |
| 439 | frame_idx_node1 = ps_pic_node1->i4_long_term_frame_idx; |
| 440 | frame_idx_node2 = ps_pic_node2->i4_long_term_frame_idx; |
| 441 | if(frame_idx_node1 == frame_idx_node2) |
| 442 | { |
| 443 | ASSERT(ps_pic_node1->i1_field_type != ps_pic_node2->i1_field_type); |
| 444 | if(ps_pic_node1->i1_field_type != first_field_type) |
| 445 | { |
| 446 | ps_dpb_node1->ps_pic_buf = ps_pic_node2; |
| 447 | ps_dpb_node2->ps_pic_buf = ps_pic_node1; |
| 448 | } |
| 449 | } |
| 450 | ps_dpb_node1 = ps_dpb_node2; |
| 451 | ps_dpb_node2 = ps_dpb_node2->ps_prev_dpb; |
| 452 | } |
| 453 | return 0; |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | ******************************************************************************* |
| 458 | * |
| 459 | * @brief |
| 460 | * Function to alternate fields. |
| 461 | * |
| 462 | * @par Description: |
| 463 | * In the ordered list of fields, alternate fields starting with |
| 464 | * first_field_type |
| 465 | * |
| 466 | * @param[in] ps_dpb_mgr |
| 467 | * Pointer to the DPB manager structure |
| 468 | * |
| 469 | * @param[in] reference_type |
| 470 | * This is used to select between short-term and long-term linked list. |
| 471 | * |
| 472 | * @param[in] first_field_type |
| 473 | * For complementary fields, required first field |
| 474 | * |
| 475 | * @returns |
| 476 | * |
| 477 | * @remarks |
| 478 | * |
| 479 | * |
| 480 | ******************************************************************************* |
| 481 | */ |
| 482 | WORD32 ih264_dpb_mgr_alternate_ref_fields(dpb_mgr_t *ps_dpb_mgr, |
| 483 | WORD32 reference_type, |
| 484 | WORD32 first_field_type) |
| 485 | { |
| 486 | dpb_info_t s_dpb_head; |
| 487 | dpb_info_t *ps_dpb_head; |
| 488 | dpb_info_t *ps_dpb_node1; |
| 489 | dpb_info_t *ps_dpb_node2; |
| 490 | dpb_info_t *ps_dpb_node3; |
| 491 | dpb_info_t *ps_dpb_node4; |
| 492 | WORD32 expected_field; |
| 493 | |
| 494 | expected_field = first_field_type; |
| 495 | |
| 496 | ps_dpb_head = &s_dpb_head; |
| 497 | |
| 498 | ps_dpb_head->ps_prev_dpb = (reference_type == SHORT_TERM_REF) ? |
| 499 | ps_dpb_mgr->ps_dpb_short_term_head: |
| 500 | ps_dpb_mgr->ps_dpb_long_term_head; |
| 501 | |
| 502 | ps_dpb_node1 = ps_dpb_head; |
| 503 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 504 | while(ps_dpb_node2 != NULL) |
| 505 | { |
| 506 | pic_buf_t *ps_pic_node2 = ps_dpb_node2->ps_pic_buf; |
| 507 | if(ps_pic_node2->i1_field_type != expected_field) |
| 508 | { |
| 509 | /* |
| 510 | * If it is not expected field, loop over the node till |
| 511 | * the expected field. |
| 512 | */ |
| 513 | ps_dpb_node3 = ps_dpb_node2; |
| 514 | ps_dpb_node4 = ps_dpb_node2->ps_prev_dpb; |
| 515 | while((ps_dpb_node4 != NULL) && |
| 516 | (ps_dpb_node4->ps_pic_buf->i1_field_type != expected_field)) |
| 517 | { |
| 518 | ps_dpb_node3 = ps_dpb_node4; |
| 519 | ps_dpb_node4 = ps_dpb_node4->ps_prev_dpb; |
| 520 | } |
| 521 | if(ps_dpb_node4 != NULL) |
| 522 | { |
| 523 | ps_dpb_node1->ps_prev_dpb = ps_dpb_node4; |
| 524 | ps_dpb_node3->ps_prev_dpb = ps_dpb_node4->ps_prev_dpb; |
| 525 | ps_dpb_node4->ps_prev_dpb = ps_dpb_node2; |
| 526 | } |
| 527 | else |
| 528 | { |
| 529 | /* node4 null means we have reached the end */ |
| 530 | break; |
| 531 | } |
| 532 | } |
| 533 | ps_dpb_node1 = ps_dpb_node1->ps_prev_dpb; |
| 534 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 535 | expected_field = (ps_dpb_node1->ps_pic_buf->i1_field_type == TOP_FIELD)? |
| 536 | BOTTOM_FIELD:TOP_FIELD; |
| 537 | } |
| 538 | |
Harish Mahendrakar | 7497191 | 2015-04-20 15:33:05 +0530 | [diff] [blame] | 539 | if(reference_type == SHORT_TERM_REF) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 540 | { |
| 541 | ps_dpb_mgr->ps_dpb_short_term_head = ps_dpb_head->ps_prev_dpb; |
| 542 | } |
| 543 | else |
| 544 | { |
| 545 | ps_dpb_mgr->ps_dpb_long_term_head = ps_dpb_head->ps_prev_dpb; |
| 546 | } |
| 547 | |
| 548 | return 0; |
| 549 | } |
| 550 | |
| 551 | /** |
| 552 | ******************************************************************************* |
| 553 | * |
| 554 | * @brief |
| 555 | * Add a ref field to short-term or long-term linked list. |
| 556 | * |
| 557 | * @par Description: |
| 558 | * This function adds a ref field to either short-term or long-term linked |
| 559 | * list. It picks up memory for the link from the array of dpb_info in |
| 560 | * dpb_mgr. The field is added to the beginning of the linked list and the |
| 561 | * head is set the the field. |
| 562 | * |
| 563 | * @param[in] ps_dpb_mgr |
| 564 | * Pointer to the DPB manager structure |
| 565 | * |
| 566 | * @param[in] ps_pic_buf |
| 567 | * Pic buf structure for the field being added. |
| 568 | * |
| 569 | * @param[in] reference_type |
| 570 | * This is used to select between short-term and long-term linked list. |
| 571 | * |
| 572 | * @param[in] frame_num |
| 573 | * frame_num for the field. |
| 574 | * |
| 575 | * @param[in] long_term_frame_idx |
| 576 | * If the ref being added is long-term, long_term_frame_idx of the field. |
| 577 | * Otherwise invalid. |
| 578 | * |
| 579 | * @returns |
| 580 | * |
| 581 | * @remarks |
| 582 | * |
| 583 | * |
| 584 | ******************************************************************************* |
| 585 | */ |
| 586 | WORD32 ih264_dpb_mgr_insert_ref_field(dpb_mgr_t *ps_dpb_mgr, |
| 587 | pic_buf_t *ps_pic_buf, |
| 588 | WORD32 reference_type, |
| 589 | UWORD32 frame_num, |
| 590 | WORD32 long_term_frame_idx) |
| 591 | { |
| 592 | WORD32 i; |
| 593 | dpb_info_t *ps_dpb_info; |
| 594 | dpb_info_t *ps_dpb_head; |
| 595 | |
| 596 | ps_dpb_info = ps_dpb_mgr->as_dpb_info; |
| 597 | |
| 598 | /* Return error if buffer is already present in the DPB */ |
| 599 | for(i = 0; i < MAX_DPB_BUFS; i++) |
| 600 | { |
| 601 | if( (ps_dpb_info[i].ps_pic_buf == ps_pic_buf) |
| 602 | && (ps_dpb_info[i].ps_pic_buf->i4_used_as_ref == reference_type) ) |
| 603 | { |
| 604 | return (-1); |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | /* Find an unused DPB location */ |
| 609 | for(i = 0; i < MAX_DPB_BUFS; i++) |
| 610 | { |
| 611 | if(NULL == ps_dpb_info[i].ps_pic_buf) |
| 612 | { |
| 613 | break; |
| 614 | } |
| 615 | } |
| 616 | if(i == MAX_DPB_BUFS) |
| 617 | { |
| 618 | return (-1); |
| 619 | } |
| 620 | |
| 621 | ps_dpb_head = (reference_type == SHORT_TERM_REF) |
| 622 | ?ps_dpb_mgr->ps_dpb_short_term_head |
| 623 | :ps_dpb_mgr->ps_dpb_long_term_head; |
| 624 | |
| 625 | if(reference_type == SHORT_TERM_REF) |
| 626 | long_term_frame_idx = -1; |
| 627 | |
| 628 | /* Create DPB info */ |
| 629 | ps_dpb_info[i].ps_pic_buf = ps_pic_buf; |
| 630 | ps_dpb_info[i].ps_prev_dpb = ps_dpb_head; |
| 631 | ps_dpb_info[i].ps_pic_buf->i4_used_as_ref = reference_type; |
| 632 | ps_dpb_info[i].ps_pic_buf->i4_frame_num = frame_num; |
| 633 | ps_dpb_info[i].ps_pic_buf->i4_long_term_frame_idx = long_term_frame_idx; |
| 634 | |
| 635 | /* update the head node of linked list to point to the current picture */ |
| 636 | if(reference_type == SHORT_TERM_REF) |
| 637 | { |
| 638 | ps_dpb_mgr->ps_dpb_short_term_head = ps_dpb_info + i; |
| 639 | |
| 640 | /* Increment Short term buffer count */ |
| 641 | ps_dpb_mgr->u1_num_short_term_ref_bufs++; |
| 642 | |
| 643 | } |
| 644 | else |
| 645 | { |
| 646 | ps_dpb_mgr->ps_dpb_long_term_head = ps_dpb_info + i; |
| 647 | |
| 648 | /* Increment Long term buffer count */ |
| 649 | ps_dpb_mgr->u1_num_long_term_ref_bufs++; |
| 650 | } |
| 651 | |
| 652 | return 0; |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | ******************************************************************************* |
| 657 | * |
| 658 | * @brief |
| 659 | * Add a ref frame to short-term or long-term linked list. |
| 660 | * |
| 661 | * @par Description: |
| 662 | * This function adds a ref frame to either short-term or long-term linked |
| 663 | * list. Internally it calls add ref field twice to add top and bottom field. |
| 664 | * |
| 665 | * @param[in] ps_dpb_mgr |
| 666 | * Pointer to the DPB manager structure |
| 667 | * |
| 668 | * @param[in] ps_pic_buf |
| 669 | * Pic buf structure for the field being added. |
| 670 | * |
| 671 | * @param[in] reference_type |
| 672 | * This is used to select between short-term and long-term linked list. |
| 673 | * |
| 674 | * @param[in] frame_num |
| 675 | * frame_num for the field. |
| 676 | * |
| 677 | * @param[in] long_term_frame_idx |
| 678 | * If the ref being added is long-term, long_term_frame_idx of the field. |
| 679 | * Otherwise invalid. |
| 680 | * |
| 681 | * @returns |
| 682 | * |
| 683 | * @remarks |
| 684 | * |
| 685 | * |
| 686 | ******************************************************************************* |
| 687 | */ |
| 688 | WORD32 ih264_dpb_mgr_insert_ref_frame(dpb_mgr_t *ps_dpb_mgr, |
| 689 | pic_buf_t *ps_pic_buf, |
| 690 | WORD32 reference_type, |
| 691 | UWORD32 frame_num, |
| 692 | WORD32 long_term_frame_idx) |
| 693 | { |
| 694 | WORD32 buf_id; |
| 695 | pic_buf_t *ps_pic_top; |
| 696 | pic_buf_t *ps_pic_bottom; |
| 697 | WORD32 ret; |
| 698 | |
| 699 | /* |
| 700 | * For a frame, since the ps_pic_buf passed to this function is that of top field |
| 701 | * obtain bottom field using buf_id. |
| 702 | */ |
| 703 | ps_pic_top = ps_pic_buf; |
| 704 | buf_id = ps_pic_top->i4_buf_id; |
| 705 | ps_pic_bottom = &ps_dpb_mgr->as_bottom_field_pics[buf_id]; |
| 706 | |
| 707 | /* Insert top field */ |
| 708 | ret = ih264_dpb_mgr_insert_ref_field(ps_dpb_mgr, |
| 709 | ps_pic_top, |
| 710 | reference_type, |
| 711 | frame_num, |
| 712 | long_term_frame_idx); |
| 713 | |
| 714 | if(ret != 0) |
| 715 | return ret; |
| 716 | |
| 717 | /* Insert bottom field */ |
| 718 | ret = ih264_dpb_mgr_insert_ref_field(ps_dpb_mgr, |
| 719 | ps_pic_bottom, |
| 720 | reference_type, |
| 721 | frame_num, |
| 722 | long_term_frame_idx); |
| 723 | |
| 724 | if(ret != 0) |
| 725 | return ret; |
| 726 | |
| 727 | return ret; |
| 728 | } |
| 729 | |
| 730 | /** |
| 731 | ******************************************************************************* |
| 732 | * |
| 733 | * @brief |
| 734 | * Returns the number of ref frames in both the linked list. |
| 735 | * |
| 736 | * @par Description: |
| 737 | * Returns the count of number of frames, number of complementary field pairs |
| 738 | * and number of unpaired fields. |
| 739 | * |
| 740 | * @param[in] ps_dpb_mgr |
| 741 | * Pointer to the DPB manager structure |
| 742 | * |
| 743 | * @param[in] curr_frame_num |
| 744 | * frame_num for the field. |
| 745 | * |
| 746 | * @param[in] max_frame_num |
| 747 | * Maximum frame_num allowed |
| 748 | * |
| 749 | * @returns |
| 750 | * |
| 751 | * @remarks |
| 752 | * |
| 753 | * |
| 754 | ******************************************************************************* |
| 755 | */ |
| 756 | WORD32 ih264_dpb_mgr_count_ref_frames(dpb_mgr_t *ps_dpb_mgr, |
| 757 | WORD32 curr_frame_num, |
| 758 | WORD32 max_frame_num) |
| 759 | { |
| 760 | WORD32 numShortTerm = 0; |
| 761 | WORD32 numLongTerm = 0; |
| 762 | dpb_info_t *ps_dpb_node; |
| 763 | WORD32 frame_num; |
| 764 | WORD32 prev_frame_num; |
| 765 | |
| 766 | /* |
| 767 | * Compute the number of short-term frames/complementary field pairs/ |
| 768 | * unpaired fields |
| 769 | */ |
| 770 | if(ps_dpb_mgr->ps_dpb_short_term_head != NULL) |
| 771 | { |
| 772 | /* Sort the short-term list by frame_num */ |
| 773 | ih264_dpb_mgr_sort_short_term_fields_by_frame_num(ps_dpb_mgr, |
| 774 | curr_frame_num, |
| 775 | TOP_FIELD, |
| 776 | max_frame_num); |
| 777 | |
| 778 | ps_dpb_node = ps_dpb_mgr->ps_dpb_short_term_head; |
| 779 | if(ps_dpb_node != NULL) |
| 780 | { |
| 781 | numShortTerm++; |
| 782 | prev_frame_num = ps_dpb_node->ps_pic_buf->i4_frame_num; |
| 783 | ps_dpb_node = ps_dpb_node->ps_prev_dpb; |
| 784 | } |
| 785 | |
| 786 | while(ps_dpb_node != NULL) |
| 787 | { |
| 788 | frame_num = ps_dpb_node->ps_pic_buf->i4_frame_num; |
| 789 | if(frame_num != prev_frame_num) |
| 790 | numShortTerm++; |
| 791 | prev_frame_num = ps_dpb_node->ps_pic_buf->i4_frame_num; |
| 792 | ps_dpb_node = ps_dpb_node->ps_prev_dpb; |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | /* |
| 797 | * Compute the number of long-term frames/complementary field pairs/ |
| 798 | * unpaired fields |
| 799 | */ |
| 800 | if(ps_dpb_mgr->ps_dpb_long_term_head != NULL) |
| 801 | { |
| 802 | ih264_dpb_mgr_sort_long_term_fields_by_frame_idx(ps_dpb_mgr, |
| 803 | TOP_FIELD); |
| 804 | |
| 805 | ps_dpb_node = ps_dpb_mgr->ps_dpb_long_term_head; |
| 806 | if(ps_dpb_node != NULL) |
| 807 | { |
| 808 | numLongTerm++; |
| 809 | prev_frame_num = ps_dpb_node->ps_pic_buf->i4_frame_num; |
| 810 | ps_dpb_node = ps_dpb_node->ps_prev_dpb; |
| 811 | } |
| 812 | |
| 813 | while(ps_dpb_node != NULL) |
| 814 | { |
| 815 | frame_num = ps_dpb_node->ps_pic_buf->i4_frame_num; |
| 816 | if(frame_num != prev_frame_num) |
| 817 | numLongTerm++; |
| 818 | prev_frame_num = ps_dpb_node->ps_pic_buf->i4_frame_num; |
| 819 | ps_dpb_node = ps_dpb_node->ps_prev_dpb; |
| 820 | } |
| 821 | } |
| 822 | return (numShortTerm + numLongTerm); |
| 823 | } |
| 824 | |
| 825 | /** |
| 826 | ******************************************************************************* |
| 827 | * |
| 828 | * @brief |
| 829 | * Deletes the ref frame at the end of the linked list. |
| 830 | * |
| 831 | * @par Description: |
| 832 | * Deletes the ref frame at the end of the linked list. For unpaired fields, |
| 833 | * it deletes just the last node. For frame or complementary field pair, it |
| 834 | * deletes the last two nodes. |
| 835 | * |
| 836 | * @param[in] ps_dpb_mgr |
| 837 | * Pointer to the DPB manager structure |
| 838 | * |
| 839 | * @param[in] reference_type |
| 840 | * This is used to select between short-term and long-term linked list. |
| 841 | * |
| 842 | * @returns |
| 843 | * |
| 844 | * @remarks |
| 845 | * |
| 846 | * |
| 847 | ******************************************************************************* |
| 848 | */ |
| 849 | WORD32 ih264_dpb_mgr_delete_ref_frame(dpb_mgr_t *ps_dpb_mgr, |
| 850 | WORD32 reference_type) |
| 851 | { |
| 852 | dpb_info_t *ps_dpb_node1; |
| 853 | dpb_info_t *ps_dpb_node2; |
| 854 | dpb_info_t *ps_dpb_node3; |
| 855 | |
| 856 | /* |
| 857 | * Assumption: The nodes sorted for frame num. |
| 858 | */ |
| 859 | |
| 860 | |
| 861 | /* Select bw short-term and long-term list. */ |
| 862 | ps_dpb_node1 = (reference_type == SHORT_TERM_REF) |
| 863 | ?ps_dpb_mgr->ps_dpb_short_term_head |
| 864 | :ps_dpb_mgr->ps_dpb_long_term_head; |
| 865 | /* If null, no entries in the list. Hence return. */ |
| 866 | if(ps_dpb_node1 == NULL) |
| 867 | return 0; |
| 868 | |
| 869 | /* If only one node in the list, set as unsed for refer and return. */ |
| 870 | if(ps_dpb_node1->ps_prev_dpb == NULL) |
| 871 | { |
| 872 | /* Set the picture as unused for reference */ |
| 873 | ps_dpb_node1->ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 874 | ps_dpb_node1->ps_pic_buf = NULL; |
| 875 | |
| 876 | if(reference_type == SHORT_TERM_REF) |
| 877 | { |
| 878 | ps_dpb_mgr->ps_dpb_short_term_head = NULL; |
| 879 | |
| 880 | /* Increment Short term buffer count */ |
| 881 | ps_dpb_mgr->u1_num_short_term_ref_bufs = 0; |
| 882 | |
| 883 | } |
| 884 | else |
| 885 | { |
| 886 | ps_dpb_mgr->ps_dpb_long_term_head = NULL; |
| 887 | |
| 888 | /* Increment Long term buffer count */ |
| 889 | ps_dpb_mgr->u1_num_long_term_ref_bufs = 0; |
| 890 | |
| 891 | } |
| 892 | return 0; |
| 893 | } |
| 894 | |
| 895 | /** |
| 896 | * If there are only 2 nodes in the list, set second node as unused for reference. |
| 897 | * If the frame_num of second node and first node is same, set first node also as |
| 898 | * unused for reference and set the corresponding head to NULL. |
| 899 | */ |
| 900 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 901 | if(ps_dpb_node2->ps_prev_dpb == NULL) |
| 902 | { |
| 903 | /* Set the picture as unused for reference */ |
| 904 | if(ps_dpb_node2->ps_pic_buf->i4_frame_num == ps_dpb_node1->ps_pic_buf->i4_frame_num) |
| 905 | { |
| 906 | /* Set the picture as unused for reference */ |
| 907 | ps_dpb_node1->ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 908 | ps_dpb_node1->ps_pic_buf = NULL; |
| 909 | if(reference_type == SHORT_TERM_REF) |
| 910 | { |
| 911 | ps_dpb_mgr->ps_dpb_short_term_head = NULL; |
| 912 | |
| 913 | /* Increment Short term buffer count */ |
| 914 | ps_dpb_mgr->u1_num_short_term_ref_bufs = 0; |
| 915 | |
| 916 | } |
| 917 | else |
| 918 | { |
| 919 | ps_dpb_mgr->ps_dpb_long_term_head = NULL; |
| 920 | |
| 921 | /* Increment Long term buffer count */ |
| 922 | ps_dpb_mgr->u1_num_long_term_ref_bufs = 0; |
| 923 | |
| 924 | } |
| 925 | |
| 926 | } |
| 927 | ps_dpb_node2->ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 928 | ps_dpb_node2->ps_pic_buf = NULL; |
| 929 | ps_dpb_node1->ps_prev_dpb = NULL; |
| 930 | return 0; |
| 931 | } |
| 932 | /* |
| 933 | * If there are more than 2 nodes, run a loop to get the last 3 nodes. |
| 934 | */ |
| 935 | ps_dpb_node3 = ps_dpb_node2->ps_prev_dpb; |
| 936 | while(ps_dpb_node3->ps_prev_dpb != NULL) |
| 937 | { |
| 938 | ps_dpb_node1 = ps_dpb_node2; |
| 939 | ps_dpb_node2 = ps_dpb_node3; |
| 940 | ps_dpb_node3 = ps_dpb_node3->ps_prev_dpb; |
| 941 | } |
| 942 | /* |
| 943 | * If node 2 and node 3 frame_nums are same, set node 2 also as unsed for |
| 944 | * reference and del reference from node1. |
| 945 | */ |
| 946 | if(ps_dpb_node2->ps_pic_buf->i4_frame_num == ps_dpb_node3->ps_pic_buf->i4_frame_num) |
| 947 | { |
| 948 | ps_dpb_node2->ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 949 | ps_dpb_node2->ps_pic_buf = NULL; |
| 950 | ps_dpb_node1->ps_prev_dpb = NULL; |
| 951 | |
| 952 | } |
| 953 | /* Set the third node as unused for reference */ |
| 954 | ps_dpb_node3->ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 955 | ps_dpb_node3->ps_pic_buf = NULL; |
| 956 | ps_dpb_node2->ps_prev_dpb = NULL; |
| 957 | |
| 958 | return 0; |
| 959 | } |
| 960 | /** |
| 961 | ******************************************************************************* |
| 962 | * |
| 963 | * @brief |
| 964 | * Delete long-term ref fields above max frame idx. |
| 965 | * |
| 966 | * @par Description: |
| 967 | * Deletes all the long-term ref fields having idx greater than max_frame_idx |
| 968 | * |
| 969 | * @param[in] ps_dpb_mgr |
| 970 | * Pointer to the DPB manager structure |
| 971 | * |
| 972 | * @param[in] max_frame_idx |
| 973 | * Max long-term frame idx allowed. |
| 974 | * |
| 975 | * @returns |
| 976 | * |
| 977 | * @remarks |
| 978 | * |
| 979 | * |
| 980 | ******************************************************************************* |
| 981 | */ |
| 982 | WORD32 ih264_dpb_mgr_delete_long_ref_fields_max_frame_idx(dpb_mgr_t *ps_dpb_mgr, |
| 983 | WORD32 max_frame_idx) |
| 984 | { |
| 985 | dpb_info_t *ps_dpb_node1; |
| 986 | dpb_info_t *ps_dpb_node2; |
| 987 | /* |
| 988 | * Loop until there is node which isn't to be deleted is encountered. |
| 989 | */ |
| 990 | while(ps_dpb_mgr->ps_dpb_long_term_head != NULL) |
| 991 | { |
| 992 | if(ps_dpb_mgr->ps_dpb_long_term_head->ps_pic_buf->i4_long_term_frame_idx |
| 993 | <= max_frame_idx) |
| 994 | { |
| 995 | break; |
| 996 | } |
| 997 | ps_dpb_mgr->ps_dpb_long_term_head->ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 998 | ps_dpb_mgr->ps_dpb_long_term_head->ps_pic_buf = NULL; |
| 999 | ps_dpb_mgr->ps_dpb_long_term_head = ps_dpb_mgr->ps_dpb_long_term_head->ps_prev_dpb; |
| 1000 | } |
| 1001 | |
| 1002 | ps_dpb_node1 = ps_dpb_mgr->ps_dpb_long_term_head; |
| 1003 | if(ps_dpb_node1 == NULL) |
| 1004 | return 0; |
| 1005 | /* |
| 1006 | * With the node that isn't to be deleted as head, loop until the end. |
| 1007 | */ |
| 1008 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 1009 | while(ps_dpb_node2 != NULL) |
| 1010 | { |
| 1011 | if(ps_dpb_node2->ps_pic_buf->i4_long_term_frame_idx > max_frame_idx) |
| 1012 | { |
| 1013 | ps_dpb_node2->ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 1014 | ps_dpb_node2->ps_pic_buf = NULL; |
| 1015 | ps_dpb_node1->ps_prev_dpb = ps_dpb_node2->ps_prev_dpb; |
| 1016 | } |
| 1017 | ps_dpb_node1 = ps_dpb_node1->ps_prev_dpb; |
| 1018 | if(ps_dpb_node1 == NULL) |
| 1019 | break; |
| 1020 | ps_dpb_node2 = ps_dpb_node1->ps_prev_dpb; |
| 1021 | } |
| 1022 | return 0; |
| 1023 | } |
| 1024 | |
| 1025 | /** |
| 1026 | ******************************************************************************* |
| 1027 | * |
| 1028 | * @brief |
| 1029 | * Deletes the short-term with least frame_num |
| 1030 | * |
| 1031 | * @par Description: |
| 1032 | * Deletes the short-term with least frame_num. It sorts the function the |
| 1033 | * short-term linked list by frame-num and the function that deletes the last |
| 1034 | * frame in the linked list. |
| 1035 | * |
| 1036 | * @param[in] ps_dpb_mgr |
| 1037 | * Pointer to the DPB manager structure |
| 1038 | * |
| 1039 | * @param[in] curr_frame_num |
| 1040 | * frame_num of the current pic |
| 1041 | * |
| 1042 | * @param[in] max_frame_num |
| 1043 | * Maximum frame_num allowed |
| 1044 | * |
| 1045 | * @returns |
| 1046 | * |
| 1047 | * @remarks |
| 1048 | * |
| 1049 | * |
| 1050 | ******************************************************************************* |
| 1051 | */ |
| 1052 | WORD32 ih264_dpb_mgr_delete_short_ref_frame(dpb_mgr_t *ps_dpb_mgr, |
| 1053 | WORD32 curr_frame_num, |
| 1054 | WORD32 max_frame_num) |
| 1055 | { |
| 1056 | WORD32 ret; |
| 1057 | /* Sort the short-term list by frame_num */ |
| 1058 | ret = ih264_dpb_mgr_sort_short_term_fields_by_frame_num(ps_dpb_mgr, |
| 1059 | curr_frame_num, |
| 1060 | TOP_FIELD, |
| 1061 | max_frame_num); |
| 1062 | |
| 1063 | /* Delete the last reference frame or field */ |
| 1064 | ret = ih264_dpb_mgr_delete_ref_frame(ps_dpb_mgr,SHORT_TERM_REF); |
| 1065 | |
| 1066 | if(ret != 0) |
| 1067 | { |
| 1068 | ASSERT(0); |
| 1069 | } |
| 1070 | |
| 1071 | return ret; |
| 1072 | } |
| 1073 | /** |
| 1074 | ******************************************************************************* |
| 1075 | * |
| 1076 | * @brief |
| 1077 | * Deletes all the ref frames. |
| 1078 | * |
| 1079 | * @par Description: |
| 1080 | * Deletes all of the ref frames/fields in the short-term and long-term linked |
| 1081 | * list. |
| 1082 | * |
| 1083 | * @param[in] ps_dpb_mgr |
| 1084 | * Pointer to the DPB manager structure |
| 1085 | * |
| 1086 | * @returns |
| 1087 | * |
| 1088 | * @remarks |
| 1089 | * |
| 1090 | * |
| 1091 | ******************************************************************************* |
| 1092 | */ |
| 1093 | WORD32 ih264_dpb_mgr_delete_all_ref_frames(dpb_mgr_t *ps_dpb_mgr) |
| 1094 | { |
| 1095 | /* Loop over short-term linked list. */ |
| 1096 | while(ps_dpb_mgr->ps_dpb_short_term_head != NULL) |
| 1097 | { |
| 1098 | ih264_dpb_mgr_delete_ref_frame(ps_dpb_mgr,SHORT_TERM_REF); |
| 1099 | } |
| 1100 | |
| 1101 | /* Loop over long-term linked list. */ |
| 1102 | while(ps_dpb_mgr->ps_dpb_long_term_head != NULL) |
| 1103 | { |
| 1104 | ih264_dpb_mgr_delete_ref_frame(ps_dpb_mgr,LONG_TERM_REF); |
| 1105 | } |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | |
| 1110 | void ih264_dpb_mgr_reset(dpb_mgr_t *ps_dpb_mgr, buf_mgr_t *ps_buf_mgr) |
| 1111 | { |
| 1112 | WORD32 i; |
| 1113 | dpb_info_t *ps_dpb_info; |
| 1114 | ASSERT(0); |
| 1115 | |
| 1116 | |
| 1117 | ps_dpb_info = ps_dpb_mgr->as_dpb_info; |
| 1118 | |
| 1119 | for(i = 0; i < MAX_DPB_BUFS; i++) |
| 1120 | { |
| 1121 | if(ps_dpb_info[i].ps_pic_buf->i4_used_as_ref) |
| 1122 | { |
| 1123 | ps_dpb_info[i].ps_pic_buf->i4_used_as_ref = UNUSED_FOR_REF; |
| 1124 | ps_dpb_info[i].ps_prev_dpb = NULL; |
| 1125 | //Release physical buffer |
| 1126 | ih264_buf_mgr_release(ps_buf_mgr, ps_dpb_info[i].ps_pic_buf->i4_buf_id, |
| 1127 | BUF_MGR_REF); |
| 1128 | |
| 1129 | ps_dpb_info[i].ps_pic_buf = NULL; |
| 1130 | } |
| 1131 | } |
| 1132 | ps_dpb_mgr->u1_num_short_term_ref_bufs = 0; |
| 1133 | ps_dpb_mgr->u1_num_long_term_ref_bufs = 0; |
| 1134 | ps_dpb_mgr->ps_dpb_short_term_head = NULL; |
| 1135 | ps_dpb_mgr->ps_dpb_long_term_head = NULL; |
| 1136 | |
| 1137 | } |
| 1138 | |
| 1139 | /** |
| 1140 | ******************************************************************************* |
| 1141 | * |
| 1142 | * @brief |
| 1143 | * deletes all pictures from DPB |
| 1144 | * |
| 1145 | * @par Description: |
| 1146 | * Deletes all pictures present in the DPB manager |
| 1147 | * |
| 1148 | * @param[in] ps_buf_mgr |
| 1149 | * Pointer to buffer manager structure |
| 1150 | * |
| 1151 | * @param[in] u1_disp_bufs |
| 1152 | * Number of buffers to be deleted |
| 1153 | * |
| 1154 | * @returns |
| 1155 | * |
| 1156 | * @remarks |
| 1157 | * |
| 1158 | * |
| 1159 | ******************************************************************************* |
| 1160 | */ |
| 1161 | |
| 1162 | void ih264_dpb_mgr_release_pics(buf_mgr_t *ps_buf_mgr, UWORD8 u1_disp_bufs) |
| 1163 | { |
| 1164 | WORD8 i; |
| 1165 | UWORD32 buf_status; |
| 1166 | ASSERT(0); |
| 1167 | |
| 1168 | for(i = 0; i < u1_disp_bufs; i++) |
| 1169 | { |
| 1170 | buf_status = ih264_buf_mgr_get_status(ps_buf_mgr, i); |
| 1171 | if(0 != buf_status) |
| 1172 | { |
| 1173 | ih264_buf_mgr_release((buf_mgr_t *)ps_buf_mgr, i, BUF_MGR_REF); |
| 1174 | } |
| 1175 | } |
| 1176 | } |