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_DEVICE_HAL_HIDL_H
18#define ANDROID_HARDWARE_DEVICE_HAL_HIDL_H
19
20#include <android/hardware/audio/2.0/IDevice.h>
21#include <android/hardware/audio/2.0/IPrimaryDevice.h>
22#include <media/audiohal/DeviceHalInterface.h>
23
24#include "ConversionHelperHidl.h"
25
26using ::android::hardware::audio::V2_0::IDevice;
27using ::android::hardware::audio::V2_0::IPrimaryDevice;
28using ::android::hardware::Return;
29
30namespace android {
31
32class DeviceHalHidl : public DeviceHalInterface, public ConversionHelperHidl
33{
34  public:
35    // Sets the value of 'devices' to a bitmask of 1 or more values of audio_devices_t.
36    virtual status_t getSupportedDevices(uint32_t *devices);
37
38    // Check to see if the audio hardware interface has been initialized.
39    virtual status_t initCheck();
40
41    // Set the audio volume of a voice call. Range is between 0.0 and 1.0.
42    virtual status_t setVoiceVolume(float volume);
43
44    // Set the audio volume for all audio activities other than voice call.
45    virtual status_t setMasterVolume(float volume);
46
47    // Get the current master volume value for the HAL.
48    virtual status_t getMasterVolume(float *volume);
49
50    // Called when the audio mode changes.
51    virtual status_t setMode(audio_mode_t mode);
52
53    // Muting control.
54    virtual status_t setMicMute(bool state);
55    virtual status_t getMicMute(bool *state);
56    virtual status_t setMasterMute(bool state);
57    virtual status_t getMasterMute(bool *state);
58
59    // Set global audio parameters.
60    virtual status_t setParameters(const String8& kvPairs);
61
62    // Get global audio parameters.
63    virtual status_t getParameters(const String8& keys, String8 *values);
64
65    // Returns audio input buffer size according to parameters passed.
66    virtual status_t getInputBufferSize(const struct audio_config *config,
67            size_t *size);
68
69    // Creates and opens the audio hardware output stream. The stream is closed
70    // by releasing all references to the returned object.
71    virtual status_t openOutputStream(
72            audio_io_handle_t handle,
73            audio_devices_t devices,
74            audio_output_flags_t flags,
75            struct audio_config *config,
76            const char *address,
77            sp<StreamOutHalInterface> *outStream);
78
79    // Creates and opens the audio hardware input stream. The stream is closed
80    // by releasing all references to the returned object.
81    virtual status_t openInputStream(
82            audio_io_handle_t handle,
83            audio_devices_t devices,
84            struct audio_config *config,
85            audio_input_flags_t flags,
86            const char *address,
87            audio_source_t source,
88            sp<StreamInHalInterface> *inStream);
89
90    // Returns whether createAudioPatch and releaseAudioPatch operations are supported.
91    virtual status_t supportsAudioPatches(bool *supportsPatches);
92
93    // Creates an audio patch between several source and sink ports.
94    virtual status_t createAudioPatch(
95            unsigned int num_sources,
96            const struct audio_port_config *sources,
97            unsigned int num_sinks,
98            const struct audio_port_config *sinks,
99            audio_patch_handle_t *patch);
100
101    // Releases an audio patch.
102    virtual status_t releaseAudioPatch(audio_patch_handle_t patch);
103
104    // Fills the list of supported attributes for a given audio port.
105    virtual status_t getAudioPort(struct audio_port *port);
106
107    // Set audio port configuration.
108    virtual status_t setAudioPortConfig(const struct audio_port_config *config);
109
110    virtual status_t dump(int fd);
111
112  private:
113    friend class DevicesFactoryHalHidl;
114    sp<IDevice> mDevice;
115    sp<IPrimaryDevice> mPrimaryDevice;  // Null if it's not a primary device.
116
117    // Can not be constructed directly by clients.
118    explicit DeviceHalHidl(const sp<IDevice>& device);
119
120    // The destructor automatically closes the device.
121    virtual ~DeviceHalHidl();
122};
123
124} // namespace android
125
126#endif // ANDROID_HARDWARE_DEVICE_HAL_HIDL_H
127