/* * Copyright (c) 2022-2023 Huawei Device Co., Ltd. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @addtogroup HdiAudio * * @brief Provides unified APIs for audio services to access audio drivers. * * An audio service can obtain an audio driver object or agent and then call APIs provided by this object or agent to * access different types of audio devices based on the audio IDs, thereby obtaining audio information, * subscribing to or unsubscribing from audio data, enabling or disabling an audio, * setting the audio data reporting mode, and setting audio options such as the accuracy and measurement range. * * @since 4.0 * @version 1.0 */ package ohos.hdi.audio.v1_0; import ohos.hdi.audio.v1_0.AudioTypes; import ohos.hdi.audio.v1_0.IAudioRender; import ohos.hdi.audio.v1_0.IAudioCapture; import ohos.hdi.audio.v1_0.IAudioCallback; /** * @brief Provides audio adapter capabilities, including initializing ports, creating rendering and capturing tasks, * and obtaining the port capability set. * * @see IAudioRender * @see IAudioCapture * @since 4.0 * @version 1.0 */ interface IAudioAdapter { /** * @brief Initializes all ports of an audio adapter. * * Call this function before calling other driver functions to check whether the initialization is complete. * If the initialization is not complete, wait for a while (for example, 100 ms) and perform the check again * until the port initialization is complete. * * @param adapter Indicates the pointer to the audio adapter to operate. * @return Returns 0 if the initialization is successful; returns a negative value otherwise. */ InitAllPorts(); /** * @brief Creates an IAudioRender object. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param desc Indicates the pointer to the descriptor of the audio adapter to start. * @param attrs Indicates the pointer to the audio sampling attributes to open. * @param render Indicates the double pointer to the IAudioRender object. * @return Returns 0 if the IAudioRender object is created successfully; * returns a negative value otherwise. * @see GetPortCapability * @see DestroyRender */ CreateRender([in] struct AudioDeviceDescriptor desc, [in] struct AudioSampleAttributes attrs, [out] IAudioRender render, [out] unsigned int renderId); /** * @brief Destroys an IAudioRender object. * * @attention Do not destroy the object during audio rendering. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param render Indicates the pointer to the IAudioRender object to operate. * @return Returns 0 if the IAudioRender object is destroyed; returns a negative value otherwise. * @see CreateRender */ DestroyRender([in] unsigned int renderId); /** * @brief Creates an IAudioCapture object. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param desc Indicates the pointer to the descriptor of the audio adapter to start. * @param attrs Indicates the pointer to the audio sampling attributes to open. * @param capture Indicates the double pointer to the IAudioCapture object. * @return Returns 0 if the IAudioCapture object is created successfully; * returns a negative value otherwise. * @see GetPortCapability * @see DestroyCapture */ CreateCapture([in] struct AudioDeviceDescriptor desc, [in] struct AudioSampleAttributes attrs, [out] IAudioCapture capture, [out] unsigned int captureId); /** * @brief Destroys an IAudioCapture object. * * @attention Do not destroy the object during audio capturing. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param capture Indicates the pointer to the IAudioCapture object to operate. * @return Returns 0 if the IAudioCapture object is destroyed; returns a negative value otherwise. * @see CreateCapture */ DestroyCapture([in] unsigned int captureId); /** * @brief Obtains the capability set of the port driver for the audio adapter. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param port Indicates the pointer to the port. * @param capability Indicates the pointer to the capability set to obtain. * @return Returns 0 if the capability set is successfully obtained; returns a negative value otherwise. */ GetPortCapability([in] struct AudioPort port, [out] struct AudioPortCapability capability); /** * @brief Sets the passthrough data transmission mode of the audio port driver. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param port Indicates the pointer to the port. * @param mode Indicates the passthrough transmission mode to set. * @return Returns 0 if the setting is successful; returns a negative value otherwise. * @see GetPassthroughMode */ SetPassthroughMode([in] struct AudioPort port, [in] enum AudioPortPassthroughMode mode); /** * @brief Obtains the passthrough data transmission mode of the audio port driver. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param port Indicates the pointer to the port. * @param mode Indicates the pointer to the passthrough transmission mode to obtain. * @return Returns 0 if the mode is successfully obtained; returns a negative value otherwise. * @see SetPassthroughMode */ GetPassthroughMode([in] struct AudioPort port, [out] enum AudioPortPassthroughMode mode); /** * @brief Get the device status of an adapter. * * @param adapter Indicates the audio adapter. * @param status Indicates the status of device . * @return Returns 0 if the operation is successful; returns a negative value otherwise. */ GetDeviceStatus([out] struct AudioDeviceStatus status); /** * @brief Update audio route on several source and sink ports. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param route Indicates route information. * @param routeHandle Indicates route handle. * @return Returns 0 if the mode is successfully obtained; returns a negative value otherwise. * @see SetPassthroughMode */ UpdateAudioRoute([in] struct AudioRoute route, [out] int routeHandle); /** * @brief Release an audio route. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param routeHandle Indicates route handle. * @return Returns 0 if the mode is successfully obtained; returns a negative value otherwise. * @see SetPassthroughMode */ ReleaseAudioRoute([in] int routeHandle); /** * @brief Sets the mute operation for the audio. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param mute Specifies whether to mute the audio. Value true means to mute the audio, * and false means the opposite. * @return Returns 0 if the setting is successful; returns a negative value otherwise. * @see GetMute */ SetMicMute([in] boolean mute); /** * @brief Obtains the mute operation set for the audio. * * @param adapter Indicates the pointer to the audio adapter to operate. * @param mute Indicates the pointer to the mute operation set for the audio. Value true means that * the audio is muted, and false means the opposite. * @return Returns 0 if the mute operation is obtained; returns a negative value otherwise. * @see SetMute */ GetMicMute([out] boolean mute); /** * @brief Sets the audio volume for voice call. * * The volume ranges from 0.0 to 1.0. If the volume level in an audio service ranges from 0 to 15, * 0.0 indicates that the audio is muted, and 1.0 indicates the maximum volume level (15). * * @param adapter Indicates the pointer to the audio adapter to operate. * @param volume Indicates the volume to set. The value ranges from 0.0 to 1.0. * @return Returns 0 if the setting is successful; returns a negative value otherwise. * @see GetVolume */ SetVoiceVolume([in] float volume); /** * @brief Sets extra audio parameters. * * @param adapter Indicates the audio adapter. * @param key Indicates what kind of parameter type will be set. * @param condition Indicates the specific extend parameter condition of AudioExtParamKey. * @param value Indicates the value of the specified condition. * * The format of condition is key=value. Separate multiple key-value pairs by semicolons (;). * When key equals to AudioExtParamKey::AUDIO_EXT_PARAM_KEY_VOLUME, the format of condition must be like this: * "EVENT_TYPE=xxx;VOLUME_GROUP_ID=xxx;AUDIO_VOLUME_TYPE=xxx;" * EVENT_TYPE indicates sub volume event type: SetVolume = 1; SetMute = 4; * VOLUME_GROUP_ID indicates which volume group will be set; * AUDIO_VOLUME_TYPE indicates which volume type will be set; * * @return Returns 0 if the operation is successful; returns a negative value otherwise. */ SetExtraParams([in] enum AudioExtParamKey key, [in] String condition, [in] String value); /** * @brief Get extra audio parameters. * * @param adapter Indicates the audio adapter. * @param key Indicates what kind of parameter type will be get. * @param condition Indicates the specific extend parameter condition of AudioExtParamKey. * @param value Indicates the value of the specified condition. * @param lenth Indicates the length of the value pointer. * * The format of condition is key=value. Separate multiple key-value pairs by semicolons (;). * When key equals to AudioExtParamKey::AUDIO_EXT_PARAM_KEY_VOLUME, the format of condition must be like this: * "EVENT_TYPE=xxx;VOLUME_GROUP_ID=xxx;AUDIO_VOLUME_TYPE=xxx;" * EVENT_TYPE indicates sub volume event type: GetVolume = 1; GetMinVolume = 2; GetMaxVolume = 3; IsStreamMute = 4; * VOLUME_GROUP_ID indicates which volume group want get; * AUDIO_VOLUME_TYPE indicates which volume type want get; * * @return Returns 0 if the operation is successful; returns a negative value otherwise. */ GetExtraParams([in] enum AudioExtParamKey key, [in] String condition, [out] String value); /** * @brief Register extra audio parameters observer. * * @param adapter Indicates the audio adapter. * @param callback Indicates param observer. * @param cookie Indicates the pointer to the callback parameters; * @return Returns 0 if the operation is successful; returns a negative value otherwise. */ RegExtraParamObserver([in] IAudioCallback audioCallback, [in] byte cookie); } /** @} */