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 PATH(android/hardware/audio/FILE_VERSION/IDevice.h)
21 #include PATH(android/hardware/audio/FILE_VERSION/IPrimaryDevice.h)
22 #include <media/audiohal/DeviceHalInterface.h>
23 
24 #include "ConversionHelperHidl.h"
25 
26 using ::android::hardware::audio::CPP_VERSION::IDevice;
27 using ::android::hardware::audio::CPP_VERSION::IPrimaryDevice;
28 using ::android::hardware::Return;
29 
30 namespace android {
31 namespace CPP_VERSION {
32 
33 class DeviceHalHidl : public DeviceHalInterface, public ConversionHelperHidl
34 {
35   public:
36     // Sets the value of 'devices' to a bitmask of 1 or more values of audio_devices_t.
37     virtual status_t getSupportedDevices(uint32_t *devices);
38 
39     // Check to see if the audio hardware interface has been initialized.
40     virtual status_t initCheck();
41 
42     // Set the audio volume of a voice call. Range is between 0.0 and 1.0.
43     virtual status_t setVoiceVolume(float volume);
44 
45     // Set the audio volume for all audio activities other than voice call.
46     virtual status_t setMasterVolume(float volume);
47 
48     // Get the current master volume value for the HAL.
49     virtual status_t getMasterVolume(float *volume);
50 
51     // Called when the audio mode changes.
52     virtual status_t setMode(audio_mode_t mode);
53 
54     // Muting control.
55     virtual status_t setMicMute(bool state);
56     virtual status_t getMicMute(bool *state);
57     virtual status_t setMasterMute(bool state);
58     virtual status_t getMasterMute(bool *state);
59 
60     // Set global audio parameters.
61     virtual status_t setParameters(const String8& kvPairs);
62 
63     // Get global audio parameters.
64     virtual status_t getParameters(const String8& keys, String8 *values);
65 
66     // Returns audio input buffer size according to parameters passed.
67     virtual status_t getInputBufferSize(const struct audio_config *config,
68             size_t *size);
69 
70     // Creates and opens the audio hardware output stream. The stream is closed
71     // by releasing all references to the returned object.
72     virtual status_t openOutputStream(
73             audio_io_handle_t handle,
74             audio_devices_t devices,
75             audio_output_flags_t flags,
76             struct audio_config *config,
77             const char *address,
78             sp<StreamOutHalInterface> *outStream);
79 
80     // Creates and opens the audio hardware input stream. The stream is closed
81     // by releasing all references to the returned object.
82     virtual status_t openInputStream(
83             audio_io_handle_t handle,
84             audio_devices_t devices,
85             struct audio_config *config,
86             audio_input_flags_t flags,
87             const char *address,
88             audio_source_t source,
89             audio_devices_t outputDevice,
90             const char *outputDeviceAddress,
91             sp<StreamInHalInterface> *inStream);
92 
93     // Returns whether createAudioPatch and releaseAudioPatch operations are supported.
94     virtual status_t supportsAudioPatches(bool *supportsPatches);
95 
96     // Creates an audio patch between several source and sink ports.
97     virtual status_t createAudioPatch(
98             unsigned int num_sources,
99             const struct audio_port_config *sources,
100             unsigned int num_sinks,
101             const struct audio_port_config *sinks,
102             audio_patch_handle_t *patch);
103 
104     // Releases an audio patch.
105     virtual status_t releaseAudioPatch(audio_patch_handle_t patch);
106 
107     // Fills the list of supported attributes for a given audio port.
108     virtual status_t getAudioPort(struct audio_port *port);
109 
110     // Set audio port configuration.
111     virtual status_t setAudioPortConfig(const struct audio_port_config *config);
112 
113     // List microphones
114     virtual status_t getMicrophones(std::vector<media::MicrophoneInfo> *microphones);
115 
116     status_t addDeviceEffect(audio_port_handle_t device, sp<EffectHalInterface> effect) override;
117     status_t removeDeviceEffect(audio_port_handle_t device, sp<EffectHalInterface> effect) override;
118 
119     virtual status_t dump(int fd);
120 
121   private:
122     friend class DevicesFactoryHalHidl;
123     sp<IDevice> mDevice;
124     sp<IPrimaryDevice> mPrimaryDevice;  // Null if it's not a primary device.
125 
126     // Can not be constructed directly by clients.
127     explicit DeviceHalHidl(const sp<IDevice>& device);
128 
129     // The destructor automatically closes the device.
130     virtual ~DeviceHalHidl();
131 };
132 
133 } // namespace CPP_VERSION
134 } // namespace android
135 
136 #endif // ANDROID_HARDWARE_DEVICE_HAL_HIDL_H
137