1 /* 2 * Copyright (C) 2014 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_AUDIOPOLICYEFFECTS_H 18 #define ANDROID_AUDIOPOLICYEFFECTS_H 19 20 #include <stdlib.h> 21 #include <stdio.h> 22 #include <string.h> 23 #include <cutils/misc.h> 24 #include <media/AudioEffect.h> 25 #include <system/audio.h> 26 #include <utils/Vector.h> 27 #include <utils/SortedVector.h> 28 #include <android-base/thread_annotations.h> 29 30 #include <future> 31 32 namespace android { 33 34 // ---------------------------------------------------------------------------- 35 36 // AudioPolicyEffects class 37 // This class will manage all effects attached to input and output streams in 38 // AudioPolicyService as configured in audio_effects.conf. 39 class AudioPolicyEffects : public RefBase 40 { 41 42 public: 43 44 // The constructor will parse audio_effects.conf 45 // First it will look whether vendor specific file exists, 46 // otherwise it will parse the system default file. 47 AudioPolicyEffects(); 48 virtual ~AudioPolicyEffects(); 49 50 // NOTE: methods on AudioPolicyEffects should never be called with the AudioPolicyService 51 // main mutex (mLock) held as they will indirectly call back into AudioPolicyService when 52 // managing audio effects. 53 54 // Return a list of effect descriptors for default input effects 55 // associated with audioSession 56 status_t queryDefaultInputEffects(audio_session_t audioSession, 57 effect_descriptor_t *descriptors, 58 uint32_t *count); 59 60 // Add all input effects associated with this input 61 // Effects are attached depending on the audio_source_t 62 status_t addInputEffects(audio_io_handle_t input, 63 audio_source_t inputSource, 64 audio_session_t audioSession); 65 66 // Add all input effects associated to this input 67 status_t releaseInputEffects(audio_io_handle_t input, 68 audio_session_t audioSession); 69 70 // Return a list of effect descriptors for default output effects 71 // associated with audioSession 72 status_t queryDefaultOutputSessionEffects(audio_session_t audioSession, 73 effect_descriptor_t *descriptors, 74 uint32_t *count); 75 76 // Add all output effects associated to this output 77 // Effects are attached depending on the audio_stream_type_t 78 status_t addOutputSessionEffects(audio_io_handle_t output, 79 audio_stream_type_t stream, 80 audio_session_t audioSession); 81 82 // release all output effects associated with this output stream and audiosession 83 status_t releaseOutputSessionEffects(audio_io_handle_t output, 84 audio_stream_type_t stream, 85 audio_session_t audioSession); 86 87 // Add the effect to the list of default effects for sources of type |source|. 88 status_t addSourceDefaultEffect(const effect_uuid_t *type, 89 const String16& opPackageName, 90 const effect_uuid_t *uuid, 91 int32_t priority, 92 audio_source_t source, 93 audio_unique_id_t* id); 94 95 // Add the effect to the list of default effects for streams of a given usage. 96 status_t addStreamDefaultEffect(const effect_uuid_t *type, 97 const String16& opPackageName, 98 const effect_uuid_t *uuid, 99 int32_t priority, 100 audio_usage_t usage, 101 audio_unique_id_t* id); 102 103 // Remove the default source effect from wherever it's attached. 104 status_t removeSourceDefaultEffect(audio_unique_id_t id); 105 106 // Remove the default stream effect from wherever it's attached. 107 status_t removeStreamDefaultEffect(audio_unique_id_t id); 108 109 private: 110 void initDefaultDeviceEffects(); 111 112 // class to store the description of an effects and its parameters 113 // as defined in audio_effects.conf 114 class EffectDesc { 115 public: EffectDesc(const char * name,const effect_uuid_t & typeUuid,const String16 & opPackageName,const effect_uuid_t & uuid,uint32_t priority,audio_unique_id_t id)116 EffectDesc(const char *name, 117 const effect_uuid_t& typeUuid, 118 const String16& opPackageName, 119 const effect_uuid_t& uuid, 120 uint32_t priority, 121 audio_unique_id_t id) : 122 mName(strdup(name)), 123 mTypeUuid(typeUuid), 124 mOpPackageName(opPackageName), 125 mUuid(uuid), 126 mPriority(priority), 127 mId(id) { } EffectDesc(const char * name,const effect_uuid_t & uuid)128 EffectDesc(const char *name, const effect_uuid_t& uuid) : 129 EffectDesc(name, 130 *EFFECT_UUID_NULL, 131 String16(""), 132 uuid, 133 0, 134 AUDIO_UNIQUE_ID_ALLOCATE) { } EffectDesc(const EffectDesc & orig)135 EffectDesc(const EffectDesc& orig) : 136 mName(strdup(orig.mName)), 137 mTypeUuid(orig.mTypeUuid), 138 mOpPackageName(orig.mOpPackageName), 139 mUuid(orig.mUuid), 140 mPriority(orig.mPriority), 141 mId(orig.mId) { 142 // deep copy mParams 143 for (size_t k = 0; k < orig.mParams.size(); k++) { 144 effect_param_t *origParam = orig.mParams[k]; 145 // psize and vsize are rounded up to an int boundary for allocation 146 size_t origSize = sizeof(effect_param_t) + 147 ((origParam->psize + 3) & ~3) + 148 ((origParam->vsize + 3) & ~3); 149 effect_param_t *dupParam = (effect_param_t *) malloc(origSize); 150 memcpy(dupParam, origParam, origSize); 151 // This works because the param buffer allocation is also done by 152 // multiples of 4 bytes originally. In theory we should memcpy only 153 // the actual param size, that is without rounding vsize. 154 mParams.add(dupParam); 155 } 156 } ~EffectDesc()157 /*virtual*/ ~EffectDesc() { 158 free(mName); 159 for (size_t k = 0; k < mParams.size(); k++) { 160 free(mParams[k]); 161 } 162 } 163 char *mName; 164 effect_uuid_t mTypeUuid; 165 String16 mOpPackageName; 166 effect_uuid_t mUuid; 167 int32_t mPriority; 168 audio_unique_id_t mId; 169 Vector <effect_param_t *> mParams; 170 }; 171 172 // class to store voctor of EffectDesc 173 class EffectDescVector { 174 public: EffectDescVector()175 EffectDescVector() {} ~EffectDescVector()176 /*virtual*/ ~EffectDescVector() { 177 for (size_t j = 0; j < mEffects.size(); j++) { 178 delete mEffects[j]; 179 } 180 } 181 Vector <EffectDesc *> mEffects; 182 }; 183 184 // class to store voctor of AudioEffects 185 class EffectVector { 186 public: EffectVector(audio_session_t session)187 explicit EffectVector(audio_session_t session) : mSessionId(session), mRefCount(0) {} ~EffectVector()188 /*virtual*/ ~EffectVector() {} 189 190 // Enable or disable all effects in effect vector 191 void setProcessorEnabled(bool enabled); 192 193 const audio_session_t mSessionId; 194 // AudioPolicyManager keeps mLock, no need for lock on reference count here 195 int mRefCount; 196 Vector< sp<AudioEffect> >mEffects; 197 }; 198 199 /** 200 * @brief The DeviceEffects class stores the effects associated to a given Device Port. 201 */ 202 class DeviceEffects { 203 public: DeviceEffects(std::unique_ptr<EffectDescVector> effectDescriptors,audio_devices_t device,const std::string & address)204 DeviceEffects(std::unique_ptr<EffectDescVector> effectDescriptors, 205 audio_devices_t device, const std::string& address) : 206 mEffectDescriptors(std::move(effectDescriptors)), 207 mDeviceType(device), mDeviceAddress(address) {} 208 /*virtual*/ ~DeviceEffects() = default; 209 210 std::vector< sp<AudioEffect> > mEffects; getDeviceType()211 audio_devices_t getDeviceType() const { return mDeviceType; } getDeviceAddress()212 std::string getDeviceAddress() const { return mDeviceAddress; } 213 const std::unique_ptr<EffectDescVector> mEffectDescriptors; 214 215 private: 216 const audio_devices_t mDeviceType; 217 const std::string mDeviceAddress; 218 219 }; 220 221 222 static const char * const kInputSourceNames[AUDIO_SOURCE_CNT -1]; 223 static audio_source_t inputSourceNameToEnum(const char *name); 224 225 static const char *kStreamNames[AUDIO_STREAM_PUBLIC_CNT+1]; //+1 required as streams start from -1 226 audio_stream_type_t streamNameToEnum(const char *name); 227 228 // Parse audio_effects.conf 229 status_t loadAudioEffectConfig(const char *path); // TODO: add legacy in the name 230 status_t loadAudioEffectXmlConfig(); // TODO: remove "Xml" in the name 231 232 // Load all effects descriptors in configuration file 233 status_t loadEffects(cnode *root, Vector <EffectDesc *>& effects); 234 EffectDesc *loadEffect(cnode *root); 235 236 // Load all automatic effect configurations 237 status_t loadInputEffectConfigurations(cnode *root, const Vector <EffectDesc *>& effects); 238 status_t loadStreamEffectConfigurations(cnode *root, const Vector <EffectDesc *>& effects); 239 EffectDescVector *loadEffectConfig(cnode *root, const Vector <EffectDesc *>& effects); 240 241 // Load all automatic effect parameters 242 void loadEffectParameters(cnode *root, Vector <effect_param_t *>& params); 243 effect_param_t *loadEffectParameter(cnode *root); 244 size_t readParamValue(cnode *node, 245 char **param, 246 size_t *curSize, 247 size_t *totSize); 248 size_t growParamSize(char **param, 249 size_t size, 250 size_t *curSize, 251 size_t *totSize); 252 253 // protects access to mInputSources, mInputSessions, mOutputStreams, mOutputSessions 254 // never hold AudioPolicyService::mLock when calling AudioPolicyEffects methods as 255 // those can call back into AudioPolicyService methods and try to acquire the mutex 256 Mutex mLock; 257 // Automatic input effects are configured per audio_source_t 258 KeyedVector< audio_source_t, EffectDescVector* > mInputSources; 259 // Automatic input effects are unique for audio_io_handle_t 260 KeyedVector< audio_session_t, EffectVector* > mInputSessions; 261 262 // Automatic output effects are organized per audio_stream_type_t 263 KeyedVector< audio_stream_type_t, EffectDescVector* > mOutputStreams; 264 // Automatic output effects are unique for audiosession ID 265 KeyedVector< audio_session_t, EffectVector* > mOutputSessions; 266 267 /** 268 * @brief mDeviceEffects map of device effects indexed by the device address 269 */ 270 std::map<std::string, std::unique_ptr<DeviceEffects>> mDeviceEffects GUARDED_BY(mLock); 271 272 /** 273 * Device Effect initialization must be asynchronous: the audio_policy service parses and init 274 * effect on first reference. AudioFlinger will handle effect creation and register these 275 * effect on audio_policy service. 276 * We must store the reference of the furture garantee real asynchronous operation. 277 */ 278 std::future<void> mDefaultDeviceEffectFuture; 279 }; 280 281 } // namespace android 282 283 #endif // ANDROID_AUDIOPOLICYEFFECTS_H 284