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 <android/hardware/audio/effect/2.0/IEffectsFactory.h>
21#include <android/hardware/audio/effect/2.0/types.h>
22#include <media/audiohal/EffectsFactoryHalInterface.h>
23
24namespace android {
25
26using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
27using ::android::hardware::audio::effect::V2_0::IEffectsFactory;
28using ::android::hardware::hidl_vec;
29
30class EffectsFactoryHalHidl : public EffectsFactoryHalInterface, public ConversionHelperHidl
31{
32  public:
33    // Returns the number of different effects in all loaded libraries.
34    virtual status_t queryNumberEffects(uint32_t *pNumEffects);
35
36    // Returns a descriptor of the next available effect.
37    virtual status_t getDescriptor(uint32_t index,
38            effect_descriptor_t *pDescriptor);
39
40    virtual status_t getDescriptor(const effect_uuid_t *pEffectUuid,
41            effect_descriptor_t *pDescriptor);
42
43    // Creates an effect engine of the specified type.
44    // To release the effect engine, it is necessary to release references
45    // to the returned effect object.
46    virtual status_t createEffect(const effect_uuid_t *pEffectUuid,
47            int32_t sessionId, int32_t ioId,
48            sp<EffectHalInterface> *effect);
49
50    virtual status_t dumpEffects(int fd);
51
52  private:
53    friend class EffectsFactoryHalInterface;
54
55    sp<IEffectsFactory> mEffectsFactory;
56    hidl_vec<EffectDescriptor> mLastDescriptors;
57
58    // Can not be constructed directly by clients.
59    EffectsFactoryHalHidl();
60    virtual ~EffectsFactoryHalHidl();
61
62    status_t queryAllDescriptors();
63};
64
65} // namespace android
66
67#endif // ANDROID_HARDWARE_EFFECTS_FACTORY_HAL_HIDL_H
68