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_EFFECTS_FACTORY_HAL_HIDL_H
18 #define ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_HIDL_H
19 
20 #include PATH(android/hardware/audio/effect/FILE_VERSION/IEffectsFactory.h)
21 #include <media/audiohal/EffectsFactoryHalInterface.h>
22 
23 #include "ConversionHelperHidl.h"
24 
25 namespace android {
26 namespace effect {
27 namespace CPP_VERSION {
28 
29 using ::android::hardware::hidl_vec;
30 using ::android::CPP_VERSION::ConversionHelperHidl;
31 using namespace ::android::hardware::audio::effect::CPP_VERSION;
32 
33 class EffectsFactoryHalHidl : public EffectsFactoryHalInterface, public ConversionHelperHidl
34 {
35   public:
36     EffectsFactoryHalHidl(sp<IEffectsFactory> effectsFactory);
37 
38     // Returns the number of different effects in all loaded libraries.
39     virtual status_t queryNumberEffects(uint32_t *pNumEffects);
40 
41     // Returns a descriptor of the next available effect.
42     virtual status_t getDescriptor(uint32_t index,
43             effect_descriptor_t *pDescriptor);
44 
45     virtual status_t getDescriptor(const effect_uuid_t *pEffectUuid,
46             effect_descriptor_t *pDescriptor);
47 
48     virtual status_t getDescriptors(const effect_uuid_t *pEffectType,
49                                     std::vector<effect_descriptor_t> *descriptors);
50 
51     // Creates an effect engine of the specified type.
52     // To release the effect engine, it is necessary to release references
53     // to the returned effect object.
54     virtual status_t createEffect(const effect_uuid_t *pEffectUuid,
55             int32_t sessionId, int32_t ioId, int32_t deviceId,
56             sp<EffectHalInterface> *effect);
57 
58     virtual status_t dumpEffects(int fd);
59 
getHalVersion()60     virtual float getHalVersion() { return MAJOR_VERSION + (float)MINOR_VERSION / 10; }
61 
62     status_t allocateBuffer(size_t size, sp<EffectBufferHalInterface>* buffer) override;
63     status_t mirrorBuffer(void* external, size_t size,
64                           sp<EffectBufferHalInterface>* buffer) override;
65 
66   private:
67     sp<IEffectsFactory> mEffectsFactory;
68     hidl_vec<EffectDescriptor> mLastDescriptors;
69 
70     status_t queryAllDescriptors();
71 };
72 
73 } // namespace CPP_VERSION
74 } // namespace effect
75 } // namespace android
76 
77 #endif // ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_HIDL_H
78