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.h |
| 24 | * |
| 25 | * @brief |
| 26 | * Function declarations used for buffer management |
| 27 | * |
| 28 | * @remarks |
| 29 | * None |
| 30 | * |
| 31 | ******************************************************************************* |
| 32 | */ |
| 33 | #ifndef _IH264_BUF_MGR_H_ |
| 34 | #define _IH264_BUF_MGR_H_ |
| 35 | |
| 36 | #define BUF_MGR_MAX_CNT 64 |
| 37 | |
| 38 | /** Flag for current encoding decoder */ |
| 39 | #define BUF_MGR_CODEC (1 << 1) |
| 40 | |
| 41 | /** Flag for reference status */ |
| 42 | #define BUF_MGR_REF (1 << 2) |
| 43 | |
| 44 | /** Flag for I/O - Display/output in case of decoder, capture/input in case of encoder */ |
| 45 | #define BUF_MGR_IO (1 << 3) |
| 46 | |
| 47 | typedef struct |
| 48 | { |
| 49 | /** |
| 50 | * Mutex used to keep the functions thread-safe |
| 51 | */ |
| 52 | void *pv_mutex; |
| 53 | |
| 54 | /** |
| 55 | * max_buf_cnt |
| 56 | */ |
| 57 | WORD32 i4_max_buf_cnt; |
| 58 | |
| 59 | /** |
| 60 | * active_buf_cnt |
| 61 | */ |
| 62 | WORD32 i4_active_buf_cnt; |
| 63 | |
| 64 | /** |
| 65 | * au4_status[BUF_MGR_MAX_CNT] |
| 66 | */ |
| 67 | UWORD32 au4_status[BUF_MGR_MAX_CNT]; |
| 68 | |
| 69 | /* The last three bit of status are: */ |
| 70 | |
| 71 | /* Bit 0 - IN USE */ |
| 72 | /* Bit 1 - CODEC */ |
| 73 | /* Bit 2 - REF */ |
| 74 | /* Bit 3 - DISP/IO/RECON */ |
| 75 | void *apv_ptr[BUF_MGR_MAX_CNT]; |
| 76 | |
| 77 | }buf_mgr_t; |
| 78 | |
| 79 | // Returns size of the buffer manager context |
| 80 | WORD32 ih264_buf_mgr_size(void); |
| 81 | |
| 82 | //Free buffer manager |
| 83 | IH264_ERROR_T ih264_buf_mgr_free(buf_mgr_t *ps_buf_mgr); |
| 84 | |
| 85 | // Initializes the buffer API structure |
| 86 | void *ih264_buf_mgr_init(void *pv_buf); |
| 87 | |
| 88 | // Add buffer to buffer manager. 0: success, -1: fail (u4_active_buf_cnt has reached u4_max_buf_cnt) |
| 89 | IH264_ERROR_T ih264_buf_mgr_add(buf_mgr_t *ps_buf_mgr, |
| 90 | void *pv_ptr, |
| 91 | WORD32 buf_id); |
| 92 | |
| 93 | // this function will set the buffer status to DEC |
| 94 | void* ih264_buf_mgr_get_next_free(buf_mgr_t *ps_buf_mgr, WORD32 *pi4_id); |
| 95 | |
| 96 | // this function will check if there are any free buffers |
| 97 | IH264_ERROR_T ih264_buf_mgr_check_free(buf_mgr_t *ps_buf_mgr); |
| 98 | |
| 99 | // mask will have who released it: DISP:REF:DEC |
| 100 | IH264_ERROR_T ih264_buf_mgr_release(buf_mgr_t *ps_buf_mgr, |
| 101 | WORD32 id, |
| 102 | UWORD32 mask); |
| 103 | |
| 104 | // sets the status to one or all of DISP:REF:DEC |
| 105 | IH264_ERROR_T ih264_buf_mgr_set_status(buf_mgr_t *ps_buf_mgr, |
| 106 | WORD32 id, |
| 107 | UWORD32 mask); |
| 108 | |
| 109 | // Gets status of the buffer |
| 110 | WORD32 ih264_buf_mgr_get_status(buf_mgr_t *ps_buf_mgr, WORD32 id); |
| 111 | |
| 112 | // pass the ID - buffer will be returned |
| 113 | void* ih264_buf_mgr_get_buf(buf_mgr_t *ps_buf_mgr, WORD32 id); |
| 114 | //Pass buffer to get ID |
| 115 | WORD32 ih264_buf_mgr_get_bufid(buf_mgr_t *ps_buf_mgr, void *pv_buf); |
| 116 | |
| 117 | // will return number of active buffers |
| 118 | UWORD32 ih264_buf_mgr_get_num_active_buf(buf_mgr_t *ps_buf_mgr); |
| 119 | |
| 120 | |
| 121 | |
| 122 | #endif /* _IH264_BUF_MGR_H_ */ |