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