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      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 
     26 using ::android::hardware::audio::V2_0::IDevice;
     27 using ::android::hardware::audio::V2_0::IPrimaryDevice;
     28 using ::android::hardware::Return;
     29 
     30 namespace android {
     31 
     32 class 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     // List microphones
    111     virtual status_t getMicrophones(std::vector<media::MicrophoneInfo> *microphones);
    112 
    113     virtual status_t dump(int fd);
    114 
    115   private:
    116     friend class DevicesFactoryHalHidl;
    117     sp<IDevice> mDevice;
    118     sp<IPrimaryDevice> mPrimaryDevice;  // Null if it's not a primary device.
    119 
    120     // Can not be constructed directly by clients.
    121     explicit DeviceHalHidl(const sp<IDevice>& device);
    122 
    123     // The destructor automatically closes the device.
    124     virtual ~DeviceHalHidl();
    125 };
    126 
    127 } // namespace android
    128 
    129 #endif // ANDROID_HARDWARE_DEVICE_HAL_HIDL_H
    130