1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_EFFECTSFACTORY_H_ 18 #define ANDROID_EFFECTSFACTORY_H_ 19 20 #include <cutils/log.h> 21 #include <pthread.h> 22 #include <dirent.h> 23 #include <hardware/audio_effect.h> 24 25 #if __cplusplus 26 extern "C" { 27 #endif 28 29 #define PROPERTY_IGNORE_EFFECTS "ro.audio.ignore_effects" 30 31 typedef struct list_elem_s { 32 void *object; 33 struct list_elem_s *next; 34 } list_elem_t; 35 36 // Structure used for storing effects with their sub effects. 37 // Used in creating gSubEffectList. Here, 38 // object holds the effect desc and the list sub_elem holds the sub effects 39 typedef struct list_sub_elem_s { 40 void *object; 41 list_elem_t *sub_elem; 42 struct list_sub_elem_s *next; 43 } list_sub_elem_t; 44 45 typedef struct lib_entry_s { 46 audio_effect_library_t *desc; 47 char *name; 48 char *path; 49 void *handle; 50 list_elem_t *effects; //list of effect_descriptor_t 51 pthread_mutex_t lock; 52 } lib_entry_t; 53 54 typedef struct effect_entry_s { 55 struct effect_interface_s *itfe; 56 effect_handle_t subItfe; 57 lib_entry_t *lib; 58 } effect_entry_t; 59 60 // Structure used to store the lib entry 61 // and the descriptor of the sub effects. 62 // The library entry is to be stored in case of 63 // sub effects as the sub effects are not linked 64 // to the library list - gLibraryList. 65 typedef struct sub_effect_entry_s { 66 lib_entry_t *lib; 67 void *object; 68 } sub_effect_entry_t; 69 70 71 //////////////////////////////////////////////////////////////////////////////// 72 // 73 // Function: EffectGetSubEffects 74 // 75 // Description: Returns the descriptors of the sub effects of the effect 76 // whose uuid is pointed to by first argument. 77 // 78 // Input: 79 // pEffectUuid: pointer to the effect uuid. 80 // size: max number of sub_effect_entry_t * in pSube. 81 // 82 // Input/Output: 83 // pSube: address where to return the sub effect structures. 84 // Output: 85 // returned value: 0 successful operation. 86 // -ENODEV factory failed to initialize 87 // -EINVAL invalid pEffectUuid or pDescriptor 88 // -ENOENT no effect with this uuid found 89 // *pDescriptor: updated with the sub effect descriptors. 90 // 91 //////////////////////////////////////////////////////////////////////////////// 92 int EffectGetSubEffects(const effect_uuid_t *pEffectUuid, 93 sub_effect_entry_t **pSube, 94 size_t size); 95 96 #if __cplusplus 97 } // extern "C" 98 #endif 99 100 101 #endif /*ANDROID_EFFECTSFACTORY_H_*/ 102