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 ******************************************************************************* 23 * @file 24 * ih264_buf_mgr.h 25 * 26 * @brief 27 * Function declarations used for buffer management 28 * 29 * @author 30 * ittiam 31 * 32 * @remarks 33 * none 34 * 35 ******************************************************************************* 36 */ 37 38 #ifndef _IH264_BUF_MGR_H_ 39 #define _IH264_BUF_MGR_H_ 40 41 /*****************************************************************************/ 42 /* Constant Macros */ 43 /*****************************************************************************/ 44 #define BUF_MGR_MAX_CNT 64 45 46 /** Flag for current encoding decoder */ 47 #define BUF_MGR_CODEC (1 << 1) 48 49 /** Flag for reference status */ 50 #define BUF_MGR_REF (1 << 2) 51 52 /** Flag for I/O - Display/output in case of decoder, capture/input in case of encoder */ 53 #define BUF_MGR_IO (1 << 3) 54 55 /*****************************************************************************/ 56 /* Structure Definitions */ 57 /*****************************************************************************/ 58 typedef struct 59 { 60 /** 61 * Mutex used to keep the functions thread-safe 62 */ 63 void *pv_mutex; 64 65 /** 66 * max_buf_cnt 67 */ 68 WORD32 i4_max_buf_cnt; 69 70 /** 71 * active_buf_cnt 72 */ 73 WORD32 i4_active_buf_cnt; 74 75 /* The last three bit of status are: */ 76 /* Bit 0 - IN USE */ 77 /* Bit 1 - CODEC */ 78 /* Bit 2 - REF */ 79 /* Bit 3 - DISP/IO/RECON */ 80 UWORD32 au4_status[BUF_MGR_MAX_CNT]; 81 82 /** 83 * pointer to buffer 84 */ 85 void *apv_ptr[BUF_MGR_MAX_CNT]; 86 87 }buf_mgr_t; 88 89 /*****************************************************************************/ 90 /* Function Declarations */ 91 /*****************************************************************************/ 92 WORD32 ih264_buf_mgr_size(void); 93 94 IH264_ERROR_T ih264_buf_mgr_free(buf_mgr_t *ps_buf_mgr); 95 96 void *ih264_buf_mgr_init(void *pv_buf); 97 98 void ih264_buf_mgr_reset(void *pv_buf_mgr); 99 100 IH264_ERROR_T ih264_buf_mgr_add(buf_mgr_t *ps_buf_mgr, void *pv_ptr, 101 WORD32 buf_id); 102 103 void* ih264_buf_mgr_get_next_free(buf_mgr_t *ps_buf_mgr, WORD32 *pi4_id); 104 105 IH264_ERROR_T ih264_buf_mgr_check_free(buf_mgr_t *ps_buf_mgr); 106 107 IH264_ERROR_T ih264_buf_mgr_release(buf_mgr_t *ps_buf_mgr, WORD32 id, 108 UWORD32 mask); 109 110 IH264_ERROR_T ih264_buf_mgr_set_status(buf_mgr_t *ps_buf_mgr, WORD32 id, 111 UWORD32 mask); 112 113 WORD32 ih264_buf_mgr_get_status(buf_mgr_t *ps_buf_mgr, WORD32 id); 114 115 void* ih264_buf_mgr_get_buf(buf_mgr_t *ps_buf_mgr, WORD32 id); 116 117 WORD32 ih264_buf_mgr_get_bufid(buf_mgr_t *ps_buf_mgr, void *pv_buf); 118 119 UWORD32 ih264_buf_mgr_get_num_active_buf(buf_mgr_t *ps_buf_mgr); 120 121 #endif /* _IH264_BUF_MGR_H_ */ 122