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_ */ 123
