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 26extern "C" { 27#endif 28 29#define PROPERTY_IGNORE_EFFECTS "ro.audio.ignore_effects" 30 31typedef 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 39typedef 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 45typedef 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 54typedef 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. 65typedef 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//////////////////////////////////////////////////////////////////////////////// 92int 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