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 * ih264e_platform_macros.h 24 * 25 * @brief 26 * Contains platform specific routines used for codec context intialization 27 * 28 * @author 29 * ittiam 30 * 31 * @remarks 32 * none 33 * 34 ******************************************************************************* 35 */ 36 37 38 #ifndef IH264E_PLATFORM_MACROS_H_ 39 #define IH264E_PLATFORM_MACROS_H_ 40 41 /*****************************************************************************/ 42 /* Extern Function Declarations */ 43 /*****************************************************************************/ 44 45 /** 46 ******************************************************************************* 47 * 48 * @brief Initialize the intra/inter/transform/deblk function pointers of 49 * codec context 50 * 51 * @par Description: the current routine initializes the function pointers of 52 * codec context basing on the architecture in use 53 * 54 * @param[in] ps_codec 55 * Codec context pointer 56 * 57 * @returns none 58 * 59 * @remarks none 60 * 61 ******************************************************************************* 62 */ 63 void ih264e_init_function_ptr_generic(codec_t *ps_codec); 64 65 /** 66 ******************************************************************************* 67 * 68 * @brief Initialize the intra/inter/transform/deblk function pointers of 69 * codec context 70 * 71 * @par Description: the current routine initializes the function pointers of 72 * codec context basing on the architecture in use 73 * 74 * @param[in] ps_codec 75 * Codec context pointer 76 * 77 * @returns none 78 * 79 * @remarks none 80 * 81 ******************************************************************************* 82 */ 83 void ih264e_init_function_ptr(void *pv_codec); 84 85 /** 86 ******************************************************************************* 87 * 88 * @brief Determine the architecture of the encoder executing environment 89 * 90 * @par Description: This routine returns the architecture of the enviro- 91 * ment in which the current encoder is being tested 92 * 93 * @param[in] void 94 * 95 * @returns IV_ARCH_T 96 * architecture 97 * 98 * @remarks none 99 * 100 ******************************************************************************* 101 */ 102 IV_ARCH_T ih264e_default_arch(void); 103 104 /** 105 ******************************************************************************* 106 * 107 * @brief Data Memory Barrier, Data Synchronization Barrier 108 * 109 * 110 * @par Description: These functions do nothing on x86 side. But on arm platforms, 111 * 112 * Data Memory Barrier acts as a memory barrier. It ensures that all explicit 113 * memory accesses that appear in program order before the DMB instruction are 114 * observed before any explicit memory accesses that appear in program order 115 * after the DMB instruction. It does not affect the ordering of any other 116 * instructions executing on the processor 117 * 118 * Data Synchronization Barrier acts as a special kind of memory barrier. No 119 * instruction in program order after this instruction executes until this instruction 120 * completes. This instruction completes when: 121 * 1. All explicit memory accesses before this instruction complete. 122 * 2. All Cache, Branch predictor and TLB maintenance operations before 123 * this instruction complete. 124 * 125 * @param[in] void 126 * 127 * @returns void 128 * 129 * @remarks none 130 * 131 ******************************************************************************* 132 */ 133 134 #endif /* IH264E_PLATFORM_MACROS_H_ */ 135