1 /* 2 * cmodule.h, component module interface class 3 * 4 * Copyright (c) 2009-2010 Wind River Systems, Inc. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 #ifndef __CMODULE_H 20 #define __CMODULE_H 21 22 #include <module.h> 23 24 /* 25 * WRS OMX-IL Component Module Symbol 26 */ 27 #define WRS_OMXIL_CMODULE_SYMBOL WRS_OMXIL_CMODULE 28 #define WRS_OMXIL_CMODULE_SYMBOL_STRING "WRS_OMXIL_CMODULE" 29 30 struct wrs_omxil_cmodule_ops_s { 31 OMX_ERRORTYPE (*instantiate)(OMX_PTR *); 32 }; 33 34 struct wrs_omxil_cmodule_s { 35 const char *name; 36 37 const char **roles; 38 const int nr_roles; 39 40 struct wrs_omxil_cmodule_ops_s *ops; 41 }; 42 43 class ComponentBase; 44 45 class CModule { 46 public: 47 CModule(const OMX_STRING lname); 48 ~CModule(); 49 50 /* 51 * library loading / unloading 52 */ 53 OMX_ERRORTYPE Load(int flag); 54 OMX_U32 Unload(void); 55 56 /* end of library loading / unloading */ 57 58 /* 59 * accessor 60 */ 61 /* library name */ 62 OMX_STRING GetLibraryName(void); 63 64 /* component name and roles */ 65 OMX_STRING GetComponentName(void); 66 OMX_ERRORTYPE GetComponentRoles(OMX_U32 *nr_roles, OMX_U8 **roles); 67 68 bool QueryHavingThisRole(const OMX_STRING role); 69 70 /* end of accessor */ 71 72 /* library symbol method and helpers */ 73 OMX_ERRORTYPE QueryComponentNameAndRoles(void); 74 OMX_ERRORTYPE InstantiateComponent(ComponentBase **instance); 75 76 /* end of library symbol method and helpers */ 77 78 private: 79 /* 80 * library symbol 81 */ 82 struct wrs_omxil_cmodule_s *wrs_omxil_cmodule; 83 84 /* end of library symbol */ 85 86 /* component name */ 87 char cname[OMX_MAX_STRINGNAME_SIZE]; 88 89 /* component roles */ 90 OMX_U8 **roles; 91 OMX_U32 nr_roles; 92 93 /* library name */ 94 char lname[OMX_MAX_STRINGNAME_SIZE]; 95 /* utils::module */ 96 struct module *module; 97 }; 98 99 #endif /* __CMODULE_H */ 100