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_INTERFACE_H 18 #define ANDROID_HARDWARE_DEVICE_HAL_INTERFACE_H 19 20 #include <android/media/audio/common/AudioMMapPolicyInfo.h> 21 #include <android/media/audio/common/AudioMMapPolicyType.h> 22 #include <error/Result.h> 23 #include <media/audiohal/EffectHalInterface.h> 24 #include <media/MicrophoneInfo.h> 25 #include <system/audio.h> 26 #include <utils/Errors.h> 27 #include <utils/RefBase.h> 28 #include <utils/String8.h> 29 30 namespace android { 31 32 class StreamInHalInterface; 33 class StreamOutHalInterface; 34 35 class DeviceHalInterface : public RefBase 36 { 37 public: 38 // Sets the value of 'devices' to a bitmask of 1 or more values of audio_devices_t. 39 virtual status_t getSupportedDevices(uint32_t *devices) = 0; 40 41 // Check to see if the audio hardware interface has been initialized. 42 virtual status_t initCheck() = 0; 43 44 // Set the audio volume of a voice call. Range is between 0.0 and 1.0. 45 virtual status_t setVoiceVolume(float volume) = 0; 46 47 // Set the audio volume for all audio activities other than voice call. 48 virtual status_t setMasterVolume(float volume) = 0; 49 50 // Get the current master volume value for the HAL. 51 virtual status_t getMasterVolume(float *volume) = 0; 52 53 // Called when the audio mode changes. 54 virtual status_t setMode(audio_mode_t mode) = 0; 55 56 // Muting control. 57 virtual status_t setMicMute(bool state) = 0; 58 virtual status_t getMicMute(bool *state) = 0; 59 virtual status_t setMasterMute(bool state) = 0; 60 virtual status_t getMasterMute(bool *state) = 0; 61 62 // Set global audio parameters. 63 virtual status_t setParameters(const String8& kvPairs) = 0; 64 65 // Get global audio parameters. 66 virtual status_t getParameters(const String8& keys, String8 *values) = 0; 67 68 // Returns audio input buffer size according to parameters passed. 69 virtual status_t getInputBufferSize(const struct audio_config *config, 70 size_t *size) = 0; 71 72 // Creates and opens the audio hardware output stream. The stream is closed 73 // by releasing all references to the returned object. 74 virtual status_t openOutputStream( 75 audio_io_handle_t handle, 76 audio_devices_t deviceType, 77 audio_output_flags_t flags, 78 struct audio_config *config, 79 const char *address, 80 sp<StreamOutHalInterface> *outStream) = 0; 81 82 // Creates and opens the audio hardware input stream. The stream is closed 83 // by releasing all references to the returned object. 84 virtual status_t openInputStream( 85 audio_io_handle_t handle, 86 audio_devices_t devices, 87 struct audio_config *config, 88 audio_input_flags_t flags, 89 const char *address, 90 audio_source_t source, 91 audio_devices_t outputDevice, 92 const char *outputDeviceAddress, 93 sp<StreamInHalInterface> *inStream) = 0; 94 95 // Returns whether createAudioPatch and releaseAudioPatch operations are supported. 96 virtual status_t supportsAudioPatches(bool *supportsPatches) = 0; 97 98 // Creates an audio patch between several source and sink ports. 99 virtual status_t createAudioPatch( 100 unsigned int num_sources, 101 const struct audio_port_config *sources, 102 unsigned int num_sinks, 103 const struct audio_port_config *sinks, 104 audio_patch_handle_t *patch) = 0; 105 106 // Releases an audio patch. 107 virtual status_t releaseAudioPatch(audio_patch_handle_t patch) = 0; 108 109 // Fills the list of supported attributes for a given audio port. 110 virtual status_t getAudioPort(struct audio_port *port) = 0; 111 112 // Fills the list of supported attributes for a given audio port. 113 virtual status_t getAudioPort(struct audio_port_v7 *port) = 0; 114 115 // Set audio port configuration. 116 virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0; 117 118 // List microphones 119 virtual status_t getMicrophones(std::vector<media::MicrophoneInfo> *microphones) = 0; 120 121 virtual status_t addDeviceEffect( 122 audio_port_handle_t device, sp<EffectHalInterface> effect) = 0; 123 virtual status_t removeDeviceEffect( 124 audio_port_handle_t device, sp<EffectHalInterface> effect) = 0; 125 126 virtual status_t getMmapPolicyInfos( 127 media::audio::common::AudioMMapPolicyType policyType, 128 std::vector<media::audio::common::AudioMMapPolicyInfo> *policyInfos) = 0; 129 virtual int32_t getAAudioMixerBurstCount() = 0; 130 virtual int32_t getAAudioHardwareBurstMinUsec() = 0; 131 132 // Update the connection status of an external device. 133 virtual status_t setConnectedState(const struct audio_port_v7 *port, bool connected) = 0; 134 135 virtual error::Result<audio_hw_sync_t> getHwAvSync() = 0; 136 137 virtual status_t dump(int fd, const Vector<String16>& args) = 0; 138 139 protected: 140 // Subclasses can not be constructed directly by clients. DeviceHalInterface()141 DeviceHalInterface() {} 142 143 // The destructor automatically closes the device. ~DeviceHalInterface()144 virtual ~DeviceHalInterface() {} 145 }; 146 147 } // namespace android 148 149 #endif // ANDROID_HARDWARE_DEVICE_HAL_INTERFACE_H 150