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_4_0_H
18 #define ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_HIDL_4_0_H
19 
20 #include <android/hardware/audio/effect/4.0/IEffectsFactory.h>
21 #include <android/hardware/audio/effect/4.0/types.h>
22 #include <media/audiohal/EffectsFactoryHalInterface.h>
23 
24 #include "ConversionHelperHidl.h"
25 
26 namespace android {
27 namespace V4_0 {
28 
29 using ::android::hardware::audio::effect::V4_0::EffectDescriptor;
30 using ::android::hardware::audio::effect::V4_0::IEffectsFactory;
31 using ::android::hardware::hidl_vec;
32 
33 class EffectsFactoryHalHidl : public EffectsFactoryHalInterface, public ConversionHelperHidl
34 {
35   public:
36     // Returns the number of different effects in all loaded libraries.
37     virtual status_t queryNumberEffects(uint32_t *pNumEffects);
38 
39     // Returns a descriptor of the next available effect.
40     virtual status_t getDescriptor(uint32_t index,
41             effect_descriptor_t *pDescriptor);
42 
43     virtual status_t getDescriptor(const effect_uuid_t *pEffectUuid,
44             effect_descriptor_t *pDescriptor);
45 
46     // Creates an effect engine of the specified type.
47     // To release the effect engine, it is necessary to release references
48     // to the returned effect object.
49     virtual status_t createEffect(const effect_uuid_t *pEffectUuid,
50             int32_t sessionId, int32_t ioId,
51             sp<EffectHalInterface> *effect);
52 
53     virtual status_t dumpEffects(int fd);
54 
55     status_t allocateBuffer(size_t size, sp<EffectBufferHalInterface>* buffer) override;
56     status_t mirrorBuffer(void* external, size_t size,
57                           sp<EffectBufferHalInterface>* buffer) override;
58 
59   private:
60     friend class EffectsFactoryHalInterface;
61 
62     sp<IEffectsFactory> mEffectsFactory;
63     hidl_vec<EffectDescriptor> mLastDescriptors;
64 
65     // Can not be constructed directly by clients.
66     EffectsFactoryHalHidl();
67     virtual ~EffectsFactoryHalHidl();
68 
69     status_t queryAllDescriptors();
70 };
71 
72 } // namespace V4_0
73 } // namespace android
74 
75 #endif // ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_HIDL_4_0_H
76