1 /* 2 * Copyright (C) 2016 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_HARDWARE_EFFECT_HAL_HIDL_H 18 #define ANDROID_HARDWARE_EFFECT_HAL_HIDL_H 19 20 #include PATH(android/hardware/audio/effect/FILE_VERSION/IEffect.h) 21 #include <media/audiohal/EffectHalInterface.h> 22 #include <fmq/EventFlag.h> 23 #include <fmq/MessageQueue.h> 24 #include <system/audio_effect.h> 25 26 using ::android::hardware::EventFlag; 27 using ::android::hardware::MessageQueue; 28 29 namespace android { 30 namespace effect { 31 namespace CPP_VERSION { 32 33 using namespace ::android::hardware::audio::effect::CPP_VERSION; 34 35 class EffectHalHidl : public EffectHalInterface 36 { 37 public: 38 // Set the input buffer. 39 virtual status_t setInBuffer(const sp<EffectBufferHalInterface>& buffer); 40 41 // Set the output buffer. 42 virtual status_t setOutBuffer(const sp<EffectBufferHalInterface>& buffer); 43 44 // Effect process function. 45 virtual status_t process(); 46 47 // Process reverse stream function. This function is used to pass 48 // a reference stream to the effect engine. 49 virtual status_t processReverse(); 50 51 // Send a command and receive a response to/from effect engine. 52 virtual status_t command(uint32_t cmdCode, uint32_t cmdSize, void *pCmdData, 53 uint32_t *replySize, void *pReplyData); 54 55 // Returns the effect descriptor. 56 virtual status_t getDescriptor(effect_descriptor_t *pDescriptor); 57 58 // Free resources on the remote side. 59 virtual status_t close(); 60 61 // Whether it's a local implementation. isLocal()62 virtual bool isLocal() const { return false; } 63 64 virtual status_t dump(int fd); 65 effectId()66 uint64_t effectId() const { return mEffectId; } 67 68 static void effectDescriptorToHal( 69 const EffectDescriptor& descriptor, effect_descriptor_t* halDescriptor); 70 71 private: 72 friend class EffectsFactoryHalHidl; 73 typedef MessageQueue<Result, hardware::kSynchronizedReadWrite> StatusMQ; 74 75 sp<IEffect> mEffect; 76 const uint64_t mEffectId; 77 sp<EffectBufferHalInterface> mInBuffer; 78 sp<EffectBufferHalInterface> mOutBuffer; 79 bool mBuffersChanged; 80 std::unique_ptr<StatusMQ> mStatusMQ; 81 EventFlag* mEfGroup; 82 83 static status_t analyzeResult(const Result& result); 84 static void effectBufferConfigFromHal( 85 const buffer_config_t& halConfig, EffectBufferConfig* config); 86 static void effectBufferConfigToHal( 87 const EffectBufferConfig& config, buffer_config_t* halConfig); 88 static void effectConfigFromHal(const effect_config_t& halConfig, EffectConfig* config); 89 static void effectConfigToHal(const EffectConfig& config, effect_config_t* halConfig); 90 91 // Can not be constructed directly by clients. 92 EffectHalHidl(const sp<IEffect>& effect, uint64_t effectId); 93 94 // The destructor automatically releases the effect. 95 virtual ~EffectHalHidl(); 96 97 status_t getConfigImpl(uint32_t cmdCode, uint32_t *replySize, void *pReplyData); 98 status_t prepareForProcessing(); 99 bool needToResetBuffers(); 100 status_t processImpl(uint32_t mqFlag); 101 status_t setConfigImpl( 102 uint32_t cmdCode, uint32_t cmdSize, void *pCmdData, 103 uint32_t *replySize, void *pReplyData); 104 status_t setProcessBuffers(); 105 }; 106 107 } // namespace CPP_VERSION 108 } // namespace effect 109 } // namespace android 110 111 #endif // ANDROID_HARDWARE_EFFECT_HAL_HIDL_H 112