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_buf_mgr.c |
| 24 | * |
| 25 | * @brief |
| 26 | * Contains function definitions for buffer management |
| 27 | * |
| 28 | * @author |
| 29 | * Srinivas T |
| 30 | * |
| 31 | * @par List of Functions: |
| 32 | * - ih264_buf_mgr_size() |
| 33 | * - ih264_buf_mgr_lock() |
| 34 | * - ih264_buf_mgr_unlock() |
| 35 | * - ih264_buf_mgr_yield() |
| 36 | * - ih264_buf_mgr_free() |
| 37 | * - ih264_buf_mgr_init() |
| 38 | * - ih264_buf_mgr_add() |
| 39 | * - ih264_buf_mgr_get_next_free() |
| 40 | * - ih264_buf_mgr_check_free() |
| 41 | * - ih264_buf_mgr_set_status() |
| 42 | * - ih264_buf_mgr_get_status() |
| 43 | * - ih264_buf_mgr_get_buf() |
| 44 | * - ih264_buf_mgr_get_bufid() |
| 45 | * - ih264_buf_mgr_get_num_active_buf() |
| 46 | * |
| 47 | * @remarks |
| 48 | * None |
| 49 | * |
| 50 | ******************************************************************************* |
| 51 | */ |
| 52 | #include <stdio.h> |
| 53 | #include <stdlib.h> |
| 54 | #include "ih264_typedefs.h" |
| 55 | #include "ih264_macros.h" |
| 56 | #include "ih264_defs.h" |
| 57 | #include "ih264_error.h" |
| 58 | #include "ih264_buf_mgr.h" |
| 59 | |
| 60 | #include "ithread.h" |
| 61 | |
| 62 | /** |
| 63 | ******************************************************************************* |
| 64 | * |
| 65 | * @brief Returns size for buf queue context. Does not include buf queue buffer |
| 66 | * requirements |
| 67 | * |
| 68 | * @par Description |
| 69 | * Returns size for buf queue context. Does not include buf queue buffer |
| 70 | * requirements. Buffer size required to store the bufs should be allocated in |
| 71 | * addition to the value returned here. |
| 72 | * |
| 73 | * @returns Size of the buf queue context |
| 74 | * |
| 75 | * @remarks |
| 76 | * |
| 77 | ******************************************************************************* |
| 78 | */ |
| 79 | WORD32 ih264_buf_mgr_size(void) |
| 80 | { |
| 81 | WORD32 size; |
| 82 | |
| 83 | size = sizeof(buf_mgr_t); |
| 84 | size += ithread_get_mutex_lock_size(); |
| 85 | |
| 86 | return size; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | ******************************************************************************* |
| 91 | * |
| 92 | * @brief |
| 93 | * Locks the buf_mgr context |
| 94 | * |
| 95 | * @par Description |
| 96 | * Locks the buf_mgr context by calling ithread_mutex_lock() |
| 97 | * |
| 98 | * @param[in] ps_buf_mgr |
| 99 | * Job Queue context |
| 100 | * |
| 101 | * @returns IH264_FAIL if mutex lock fails else IH264_SUCCESS |
| 102 | * |
| 103 | * @remarks |
| 104 | * |
| 105 | ******************************************************************************* |
| 106 | */ |
| 107 | IH264_ERROR_T ih264_buf_mgr_lock(buf_mgr_t *ps_buf_mgr) |
| 108 | { |
| 109 | WORD32 retval; |
| 110 | retval = ithread_mutex_lock(ps_buf_mgr->pv_mutex); |
| 111 | if(retval) |
| 112 | { |
| 113 | return IH264_FAIL; |
| 114 | } |
| 115 | return IH264_SUCCESS; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | ******************************************************************************* |
| 120 | * |
| 121 | * @brief |
| 122 | * Unlocks the buf_mgr context |
| 123 | * |
| 124 | * @par Description |
| 125 | * Unlocks the buf_mgr context by calling ithread_mutex_unlock() |
| 126 | * |
| 127 | * @param[in] ps_buf_mgr |
| 128 | * Job Queue context |
| 129 | * |
| 130 | * @returns IH264_FAIL if mutex unlock fails else IH264_SUCCESS |
| 131 | * |
| 132 | * @remarks |
| 133 | * |
| 134 | ******************************************************************************* |
| 135 | */ |
| 136 | |
| 137 | IH264_ERROR_T ih264_buf_mgr_unlock(buf_mgr_t *ps_buf_mgr) |
| 138 | { |
| 139 | WORD32 retval; |
| 140 | retval = ithread_mutex_unlock(ps_buf_mgr->pv_mutex); |
| 141 | if(retval) |
| 142 | { |
| 143 | return IH264_FAIL; |
| 144 | } |
| 145 | return IH264_SUCCESS; |
| 146 | |
| 147 | } |
| 148 | /** |
| 149 | ******************************************************************************* |
| 150 | * |
| 151 | * @brief |
| 152 | * Yeilds the thread |
| 153 | * |
| 154 | * @par Description |
| 155 | * Unlocks the buf_mgr context by calling |
| 156 | * ih264_buf_mgr_unlock(), ithread_yield() and then ih264_buf_mgr_lock() |
| 157 | * buf_mgr is unlocked before to ensure the buf_mgr can be accessed by other threads |
| 158 | * If unlock is not done before calling yield then no other thread can access |
| 159 | * the buf_mgr functions and update buf_mgr. |
| 160 | * |
| 161 | * @param[in] ps_buf_mgr |
| 162 | * Job Queue context |
| 163 | * |
| 164 | * @returns IH264_FAIL if mutex lock unlock or yield fails else IH264_SUCCESS |
| 165 | * |
| 166 | * @remarks |
| 167 | * |
| 168 | ******************************************************************************* |
| 169 | */ |
| 170 | IH264_ERROR_T ih264_buf_mgr_yield(buf_mgr_t *ps_buf_mgr) |
| 171 | { |
| 172 | |
| 173 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 174 | |
| 175 | IH264_ERROR_T rettmp; |
| 176 | rettmp = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 177 | RETURN_IF((rettmp != IH264_SUCCESS), rettmp); |
| 178 | |
| 179 | //ithread_usleep(10); |
| 180 | ithread_yield(); |
| 181 | |
| 182 | rettmp = ih264_buf_mgr_lock(ps_buf_mgr); |
| 183 | RETURN_IF((rettmp != IH264_SUCCESS), rettmp); |
| 184 | return ret; |
| 185 | } |
| 186 | |
| 187 | |
| 188 | /** |
| 189 | ******************************************************************************* |
| 190 | * |
| 191 | * @brief free the buf queue pointers |
| 192 | * |
| 193 | * @par Description |
| 194 | * Frees the buf_mgr context |
| 195 | * |
| 196 | * @param[in] pv_buf |
| 197 | * Memoy for buf queue buffer and buf queue context |
| 198 | * |
| 199 | * @returns Pointer to buf queue context |
| 200 | * |
| 201 | * @remarks |
| 202 | * Since it will be called only once by master thread this is not thread safe. |
| 203 | * |
| 204 | ******************************************************************************* |
| 205 | */ |
| 206 | IH264_ERROR_T ih264_buf_mgr_free(buf_mgr_t *ps_buf_mgr) |
| 207 | { |
| 208 | WORD32 ret; |
| 209 | ret = ithread_mutex_destroy(ps_buf_mgr->pv_mutex); |
| 210 | |
| 211 | if(0 == ret) |
| 212 | return IH264_SUCCESS; |
| 213 | else |
| 214 | return IH264_FAIL; |
| 215 | } |
| 216 | /** |
| 217 | ******************************************************************************* |
| 218 | * |
| 219 | * @brief |
| 220 | * Buffer manager initialization function. |
| 221 | * |
| 222 | * @par Description: |
| 223 | * Initializes the buffer manager structure |
| 224 | * |
| 225 | * @param[in] ps_buf_mgr |
| 226 | * Pointer to the buffer manager |
| 227 | * |
| 228 | * @returns |
| 229 | * |
| 230 | * @remarks |
| 231 | * None |
| 232 | * |
| 233 | ******************************************************************************* |
| 234 | */ |
| 235 | |
| 236 | |
| 237 | void *ih264_buf_mgr_init(void *pv_buf) |
| 238 | { |
| 239 | WORD32 id; |
| 240 | UWORD8 *pu1_buf; |
| 241 | buf_mgr_t *ps_buf_mgr; |
| 242 | pu1_buf = (UWORD8 *)pv_buf; |
| 243 | |
| 244 | ps_buf_mgr = (buf_mgr_t *)pu1_buf; |
| 245 | pu1_buf += sizeof(buf_mgr_t); |
| 246 | |
| 247 | ps_buf_mgr->pv_mutex = pu1_buf; |
| 248 | pu1_buf += ithread_get_mutex_lock_size(); |
| 249 | |
| 250 | ithread_mutex_init(ps_buf_mgr->pv_mutex); |
| 251 | |
| 252 | ps_buf_mgr->i4_max_buf_cnt = BUF_MGR_MAX_CNT; |
| 253 | ps_buf_mgr->i4_active_buf_cnt = 0; |
| 254 | |
| 255 | for(id = 0; id < BUF_MGR_MAX_CNT; id++) |
| 256 | { |
| 257 | ps_buf_mgr->au4_status[id] = 0; |
| 258 | ps_buf_mgr->apv_ptr[id] = NULL; |
| 259 | } |
| 260 | |
| 261 | return ps_buf_mgr; |
| 262 | } |
| 263 | |
| 264 | |
| 265 | /** |
| 266 | ******************************************************************************* |
| 267 | * |
| 268 | * @brief |
| 269 | * Adds and increments the buffer and buffer count. |
| 270 | * |
| 271 | * @par Description: |
| 272 | * Adds a buffer to the buffer manager if it is not already present and |
| 273 | * increments the active buffer count |
| 274 | * |
| 275 | * @param[in] ps_buf_mgr |
| 276 | * Pointer to the buffer manager |
| 277 | * |
| 278 | * @param[in] pv_ptr |
| 279 | * Pointer to the buffer to be added |
| 280 | * |
| 281 | * @returns Returns 0 on success, -1 otherwise |
| 282 | * |
| 283 | * @remarks |
| 284 | * None |
| 285 | * |
| 286 | ******************************************************************************* |
| 287 | */ |
| 288 | IH264_ERROR_T ih264_buf_mgr_add(buf_mgr_t *ps_buf_mgr, |
| 289 | void *pv_ptr, |
| 290 | WORD32 buf_id) |
| 291 | { |
| 292 | |
| 293 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 294 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 295 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 296 | |
| 297 | /* Check if buffer ID is within allowed range */ |
| 298 | if(buf_id >= ps_buf_mgr->i4_max_buf_cnt) |
| 299 | { |
| 300 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 301 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 302 | |
| 303 | return IH264_FAIL; |
| 304 | } |
| 305 | |
| 306 | /* Check if the current ID is being used to hold some other buffer */ |
| 307 | if((ps_buf_mgr->apv_ptr[buf_id] != NULL) && |
| 308 | (ps_buf_mgr->apv_ptr[buf_id] !=pv_ptr)) |
| 309 | { |
| 310 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 311 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 312 | |
| 313 | return IH264_FAIL; |
| 314 | } |
| 315 | ps_buf_mgr->apv_ptr[buf_id] = pv_ptr; |
| 316 | ps_buf_mgr->i4_active_buf_cnt++; |
| 317 | |
| 318 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 319 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 320 | |
| 321 | return ret; |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | ******************************************************************************* |
| 326 | * |
| 327 | * @brief |
| 328 | * Gets the next free buffer. |
| 329 | * |
| 330 | * @par Description: |
| 331 | * Returns the next free buffer available and sets the corresponding status |
| 332 | * to DEC |
| 333 | * |
| 334 | * @param[in] ps_buf_mgr |
| 335 | * Pointer to the buffer manager |
| 336 | * |
| 337 | * @param[in] pi4_buf_id |
| 338 | * Pointer to the id of the free buffer |
| 339 | * |
| 340 | * @returns Pointer to the free buffer |
| 341 | * |
| 342 | * @remarks |
| 343 | * None |
| 344 | * |
| 345 | ******************************************************************************* |
| 346 | */ |
| 347 | void* ih264_buf_mgr_get_next_free(buf_mgr_t *ps_buf_mgr, WORD32 *pi4_buf_id) |
| 348 | { |
| 349 | WORD32 id; |
| 350 | void *pv_ret_ptr; |
| 351 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 352 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 353 | RETURN_IF((ret != IH264_SUCCESS), NULL); |
| 354 | |
| 355 | pv_ret_ptr = NULL; |
| 356 | for(id = 0; id < ps_buf_mgr->i4_active_buf_cnt; id++) |
| 357 | { |
| 358 | /* Check if the buffer is non-null and status is zero */ |
| 359 | if((ps_buf_mgr->au4_status[id] == 0) && (ps_buf_mgr->apv_ptr[id])) |
| 360 | { |
| 361 | *pi4_buf_id = id; |
| 362 | /* DEC is set to 1 */ |
| 363 | ps_buf_mgr->au4_status[id] = 1; |
| 364 | pv_ret_ptr = ps_buf_mgr->apv_ptr[id]; |
| 365 | break; |
| 366 | } |
| 367 | } |
| 368 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 369 | RETURN_IF((ret != IH264_SUCCESS), NULL); |
| 370 | |
| 371 | return pv_ret_ptr; |
| 372 | } |
| 373 | |
| 374 | |
| 375 | /** |
| 376 | ******************************************************************************* |
| 377 | * |
| 378 | * @brief |
| 379 | * Checks the buffer manager for free buffers available. |
| 380 | * |
| 381 | * @par Description: |
| 382 | * Checks if there are any free buffers available |
| 383 | * |
| 384 | * @param[in] ps_buf_mgr |
| 385 | * Pointer to the buffer manager |
| 386 | * |
| 387 | * @returns Returns 0 if available, -1 otherwise |
| 388 | * |
| 389 | * @remarks |
| 390 | * None |
| 391 | * |
| 392 | ******************************************************************************* |
| 393 | */ |
| 394 | IH264_ERROR_T ih264_buf_mgr_check_free(buf_mgr_t *ps_buf_mgr) |
| 395 | { |
| 396 | WORD32 id; |
| 397 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 398 | IH264_ERROR_T rettmp = IH264_SUCCESS; |
| 399 | rettmp = ih264_buf_mgr_lock(ps_buf_mgr); |
| 400 | RETURN_IF((rettmp != IH264_SUCCESS), ret); |
| 401 | |
| 402 | ret = IH264_FAIL; |
| 403 | for(id = 0; id < ps_buf_mgr->i4_active_buf_cnt; id++) |
| 404 | { |
| 405 | if((ps_buf_mgr->au4_status[id] == 0) && |
| 406 | (ps_buf_mgr->apv_ptr[id])) |
| 407 | { |
| 408 | ret = IH264_SUCCESS; |
| 409 | break; |
| 410 | } |
| 411 | } |
| 412 | rettmp = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 413 | RETURN_IF((rettmp != IH264_SUCCESS), ret); |
| 414 | |
| 415 | return ret; |
| 416 | |
| 417 | } |
| 418 | |
| 419 | |
| 420 | /** |
| 421 | ******************************************************************************* |
| 422 | * |
| 423 | * @brief |
| 424 | * Resets the status bits. |
| 425 | * |
| 426 | * @par Description: |
| 427 | * resets the status bits that the mask contains (status corresponding to |
| 428 | * the id) |
| 429 | * |
| 430 | * @param[in] ps_buf_mgr |
| 431 | * Pointer to the buffer manager |
| 432 | * |
| 433 | * @param[in] buf_id |
| 434 | * ID of the buffer status to be released |
| 435 | * |
| 436 | * @param[in] mask |
| 437 | * Contains the bits that are to be reset |
| 438 | * |
| 439 | * @returns 0 if success, -1 otherwise |
| 440 | * |
| 441 | * @remarks |
| 442 | * None |
| 443 | * |
| 444 | ******************************************************************************* |
| 445 | */ |
| 446 | IH264_ERROR_T ih264_buf_mgr_release(buf_mgr_t *ps_buf_mgr, |
| 447 | WORD32 buf_id, |
| 448 | UWORD32 mask) |
| 449 | { |
| 450 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 451 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 452 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 453 | |
| 454 | |
| 455 | /* If the given id is pointing to an id which is not yet added */ |
| 456 | if(buf_id >= ps_buf_mgr->i4_active_buf_cnt) |
| 457 | { |
| 458 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 459 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 460 | return IH264_FAIL; |
| 461 | } |
| 462 | |
| 463 | ps_buf_mgr->au4_status[buf_id] &= ~mask; |
| 464 | |
| 465 | |
| 466 | /* If both the REF and DISP are zero, DEC is set to zero */ |
| 467 | if(ps_buf_mgr->au4_status[buf_id] == 1) |
| 468 | { |
| 469 | ps_buf_mgr->au4_status[buf_id] = 0; |
| 470 | } |
| 471 | |
| 472 | |
| 473 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 474 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 475 | |
| 476 | return ret; |
| 477 | } |
| 478 | |
| 479 | |
| 480 | /** |
| 481 | ******************************************************************************* |
| 482 | * |
| 483 | * @brief |
| 484 | * Sets the status bit. |
| 485 | * |
| 486 | * @par Description: |
| 487 | * sets the status bits that the mask contains (status corresponding to the |
| 488 | * id) |
| 489 | * |
| 490 | * |
| 491 | * @param[in] ps_buf_mgr |
| 492 | * Pointer to the buffer manager |
| 493 | * |
| 494 | * @param[in] buf_id |
| 495 | * ID of the buffer whose status needs to be modified |
| 496 | * |
| 497 | * |
| 498 | * @param[in] mask |
| 499 | * Contains the bits that are to be set |
| 500 | * |
| 501 | * @returns 0 if success, -1 otherwise |
| 502 | * |
| 503 | * @remarks |
| 504 | * None |
| 505 | * |
| 506 | ******************************************************************************* |
| 507 | */ |
| 508 | IH264_ERROR_T ih264_buf_mgr_set_status(buf_mgr_t *ps_buf_mgr, |
| 509 | WORD32 buf_id, |
| 510 | UWORD32 mask) |
| 511 | { |
| 512 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 513 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 514 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 515 | |
| 516 | if(buf_id >= ps_buf_mgr->i4_active_buf_cnt) |
| 517 | { |
| 518 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 519 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 520 | return IH264_FAIL; |
| 521 | } |
| 522 | |
| 523 | |
| 524 | if((ps_buf_mgr->au4_status[buf_id] & mask) != 0) |
| 525 | { |
| 526 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 527 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 528 | return IH264_FAIL; |
| 529 | } |
| 530 | |
| 531 | ps_buf_mgr->au4_status[buf_id] |= mask; |
| 532 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 533 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 534 | |
| 535 | return ret; |
| 536 | } |
| 537 | |
| 538 | |
| 539 | /** |
| 540 | ******************************************************************************* |
| 541 | * |
| 542 | * @brief |
| 543 | * Returns the status of the buffer. |
| 544 | * |
| 545 | * @par Description: |
| 546 | * Returns the status of the buffer corresponding to the id |
| 547 | * |
| 548 | * @param[in] ps_buf_mgr |
| 549 | * Pointer to the buffer manager |
| 550 | * |
| 551 | * @param[in] buf_id |
| 552 | * ID of the buffer status required |
| 553 | * |
| 554 | * @returns Status of the buffer corresponding to the id |
| 555 | * |
| 556 | * @remarks |
| 557 | * None |
| 558 | * |
| 559 | ******************************************************************************* |
| 560 | */ |
| 561 | WORD32 ih264_buf_mgr_get_status( buf_mgr_t *ps_buf_mgr, WORD32 buf_id ) |
| 562 | { |
| 563 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 564 | UWORD32 status; |
| 565 | |
| 566 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 567 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 568 | |
| 569 | status = ps_buf_mgr->au4_status[buf_id]; |
| 570 | |
| 571 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 572 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 573 | |
| 574 | return status; |
| 575 | } |
| 576 | |
| 577 | |
| 578 | /** |
| 579 | ******************************************************************************* |
| 580 | * |
| 581 | * @brief |
| 582 | * Gets the buffer from the buffer manager |
| 583 | * |
| 584 | * @par Description: |
| 585 | * Returns the pointer to the buffer corresponding to the id |
| 586 | * |
| 587 | * @param[in] ps_buf_mgr |
| 588 | * Pointer to the buffer manager |
| 589 | * |
| 590 | * @param[in] buf_id |
| 591 | * ID of the buffer required |
| 592 | * |
| 593 | * @returns Pointer to the buffer required |
| 594 | * |
| 595 | * @remarks |
| 596 | * None |
| 597 | * |
| 598 | ******************************************************************************* |
| 599 | */ |
| 600 | void* ih264_buf_mgr_get_buf(buf_mgr_t *ps_buf_mgr, WORD32 buf_id) |
| 601 | { |
| 602 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 603 | void *pv_buf; |
| 604 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 605 | RETURN_IF((ret != IH264_SUCCESS), NULL); |
| 606 | |
| 607 | pv_buf = ps_buf_mgr->apv_ptr[buf_id]; |
| 608 | |
| 609 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 610 | RETURN_IF((ret != IH264_SUCCESS), NULL); |
| 611 | |
| 612 | return pv_buf; |
| 613 | } |
| 614 | |
| 615 | |
| 616 | /** |
| 617 | ******************************************************************************* |
| 618 | * |
| 619 | * @brief |
| 620 | * Gets the buffer id from the buffer manager if the buffer is added to the |
| 621 | * buffer manager |
| 622 | * |
| 623 | * @par Description: |
| 624 | * Returns the buffer id corresponding to the given buffer if it exists |
| 625 | * |
| 626 | * @param[in] ps_buf_mgr |
| 627 | * Pointer to the buffer manager |
| 628 | * |
| 629 | * @param[in] pv_buf |
| 630 | * Pointer to the buffer |
| 631 | * |
| 632 | * @returns Buffer id if exists, else -1 |
| 633 | * |
| 634 | * @remarks |
| 635 | * None |
| 636 | * |
| 637 | ******************************************************************************* |
| 638 | */ |
| 639 | WORD32 ih264_buf_mgr_get_bufid(buf_mgr_t *ps_buf_mgr, void *pv_buf) |
| 640 | { |
| 641 | WORD32 id; |
| 642 | WORD32 buf_id = -1; |
| 643 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 644 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 645 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 646 | |
| 647 | for(id = 0; id < ps_buf_mgr->i4_active_buf_cnt; id++) |
| 648 | { |
| 649 | if(ps_buf_mgr->apv_ptr[id] == pv_buf) |
| 650 | { |
| 651 | buf_id = id; |
| 652 | break; |
| 653 | } |
| 654 | } |
| 655 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 656 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 657 | |
| 658 | return buf_id; |
| 659 | } |
| 660 | |
| 661 | |
| 662 | /** |
| 663 | ******************************************************************************* |
| 664 | * |
| 665 | * @brief |
| 666 | * Gets the no.of active buffer |
| 667 | * |
| 668 | * @par Description: |
| 669 | * Return the number of active buffers in the buffer manager |
| 670 | * |
| 671 | * @param[in] ps_buf_mgr |
| 672 | * Pointer to the buffer manager |
| 673 | * |
| 674 | * @returns number of active buffers |
| 675 | * |
| 676 | * @remarks |
| 677 | * None |
| 678 | * |
| 679 | ******************************************************************************* |
| 680 | */ |
| 681 | UWORD32 ih264_buf_mgr_get_num_active_buf(buf_mgr_t *ps_buf_mgr) |
| 682 | { |
| 683 | UWORD32 u4_buf_cnt; |
| 684 | IH264_ERROR_T ret = IH264_SUCCESS; |
| 685 | |
| 686 | u4_buf_cnt = 0; |
| 687 | |
| 688 | ret = ih264_buf_mgr_lock(ps_buf_mgr); |
| 689 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 690 | u4_buf_cnt = ps_buf_mgr->i4_active_buf_cnt; |
| 691 | |
| 692 | ret = ih264_buf_mgr_unlock(ps_buf_mgr); |
| 693 | RETURN_IF((ret != IH264_SUCCESS), ret); |
| 694 | |
| 695 | return u4_buf_cnt; |
| 696 | } |