AudioManager: audio routing extensions (a198a292) · Commits · e / os / android_frameworks_base

media/java/android/media/AudioDevicePort.java

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		/*
		* Copyright (C) 2014 The Android Open Source Project
		*
		* 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.
		*/

		package android.media;

		/**
		* The AudioDevicePort is a specialized type of AudioPort
		* describing an input (e.g microphone) or output device (e.g speaker)
		* of the system.
		* An AudioDevicePort is an AudioPort controlled by the audio HAL, almost always a physical
		* device at the boundary of the audio system.
		* In addition to base audio port attributes, the device descriptor contains:
		* - the device type (e.g AudioManager.DEVICE_OUT_SPEAKER)
		* - the device address (e.g MAC adddress for AD2P sink).
		* @see AudioPort
		* @hide
		*/

		public class AudioDevicePort extends AudioPort {

		private final int mType;
		private final String mAddress;

		AudioDevicePort(AudioHandle handle, int[] samplingRates, int[] channelMasks,
		int[] formats, AudioGain[] gains, int type, String address) {
		super(handle,
		(AudioManager.isInputDevice(type) == true) ?
		AudioPort.ROLE_SOURCE : AudioPort.ROLE_SINK,
		samplingRates, channelMasks, formats, gains);
		mType = type;
		mAddress = address;
		}

		/**
		* Get the device type (e.g AudioManager.DEVICE_OUT_SPEAKER)
		*/
		public int type() {
		return mType;
		}

		/**
		* Get the device address. Address format varies with the device type.
		* - USB devices ({@link AudioManager#DEVICE_OUT_USB_DEVICE},
		* {@link AudioManager#DEVICE_IN_USB_DEVICE}) use an address composed of the ALSA card number
		* and device number: "card=2;device=1"
		* - Bluetooth devices ({@link AudioManager#DEVICE_OUT_BLUETOOTH_SCO},
		* {@link AudioManager#DEVICE_OUT_BLUETOOTH_SCO}, {@link AudioManager#DEVICE_OUT_BLUETOOTH_A2DP})
		* use the MAC address of the bluetooth device in the form "00:11:22:AA:BB:CC" as reported by
		* {@link BluetoothDevice#getAddress()}.
		* - Deivces that do not have an address will indicate an empty string "".
		*/
		public String address() {
		return mAddress;
		}

		/**
		* Build a specific configuration of this audio device port for use by methods
		* like AudioManager.connectAudioPatch().
		*/
		public AudioDevicePortConfig buildConfig(int samplingRate, int channelMask, int format,
		AudioGainConfig gain) {
		return new AudioDevicePortConfig(this, samplingRate, channelMask, format, gain);
		}

		@Override
		public boolean equals(Object o) {
		if (o == null \|\| !(o instanceof AudioDevicePort)) {
		return false;
		}
		return super.equals(o);
		}
		}

media/java/android/media/AudioDevicePortConfig.java

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		/*
		* Copyright (C) 2014 The Android Open Source Project
		*
		* 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.
		*/

		package android.media;

		/**
		* An AudioDevicePortConfig describes a possible configuration of an output or input device
		* (speaker, headphone, microphone ...).
		* It is used to specify a sink or source when creating a connection with
		* AudioManager.connectAudioPatch().
		* An AudioDevicePortConfig is obtained from AudioDevicePort.buildConfig().
		* @hide
		*/

		public class AudioDevicePortConfig extends AudioPortConfig {
		AudioDevicePortConfig(AudioDevicePort devicePort, int samplingRate, int channelMask,
		int format, AudioGainConfig gain) {
		super((AudioPort)devicePort, samplingRate, channelMask, format, gain);
		}

		/**
		* Returns the audio device port this AudioDevicePortConfig is issued from.
		*/
		public AudioDevicePort port() {
		return (AudioDevicePort)mPort;
		}
		}

media/java/android/media/AudioGain.java

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		/*
		* Copyright (C) 2014 The Android Open Source Project
		*
		* 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.
		*/

		package android.media;

		/**
		* The AudioGain describes a gain controller. Gain controllers are exposed by
		* audio ports when the gain is configurable at this port's input or output.
		* Gain values are expressed in millibels.
		* A gain controller has the following attributes:
		* - mode: defines modes of operation or features
		* MODE_JOINT: all channel gains are controlled simultaneously
		* MODE_CHANNELS: each channel gain is controlled individually
		* MODE_RAMP: ramps can be applied when gain changes
		* - channel mask: indicates for which channels the gain can be controlled
		* - min value: minimum gain value in millibel
		* - max value: maximum gain value in millibel
		* - default value: gain value after reset in millibel
		* - step value: granularity of gain control in millibel
		* - min ramp duration: minimum ramp duration in milliseconds
		* - max ramp duration: maximum ramp duration in milliseconds
		*
		* This object is always created by the framework and read only by applications.
		* Applications get a list of AudioGainDescriptors from AudioPortDescriptor.gains() and can build a
		* valid gain configuration from AudioGain.buildConfig()
		* @hide
		*/
		public class AudioGain {

		/**
		* Bit of AudioGain.mode() field indicating that
		* all channel gains are controlled simultaneously
		*/
		public static final int MODE_JOINT = 1;
		/**
		* Bit of AudioGain.mode() field indicating that
		* each channel gain is controlled individually
		*/
		public static final int MODE_CHANNELS = 2;
		/**
		* Bit of AudioGain.mode() field indicating that
		* ramps can be applied when gain changes. The type of ramp (linear, log etc...) is
		* implementation specific.
		*/
		public static final int MODE_RAMP = 4;

		private final int mIndex;
		private final int mMode;
		private final int mChannelMask;
		private final int mMinValue;
		private final int mMaxValue;
		private final int mDefaultValue;
		private final int mStepValue;
		private final int mRampDurationMinMs;
		private final int mRampDurationMaxMs;

		// The channel mask passed to the constructor is as specified in AudioFormat
		// (e.g. AudioFormat.CHANNEL_OUT_STEREO)
		AudioGain(int index, int mode, int channelMask,
		int minValue, int maxValue, int defaultValue, int stepValue,
		int rampDurationMinMs, int rampDurationMaxMs) {
		mIndex = index;
		mMode = mode;
		mChannelMask = channelMask;
		mMinValue = minValue;
		mMaxValue = maxValue;
		mDefaultValue = defaultValue;
		mStepValue = stepValue;
		mRampDurationMinMs = rampDurationMinMs;
		mRampDurationMaxMs = rampDurationMaxMs;
		}

		/**
		* Bit field indicating supported modes of operation
		*/
		public int mode() {
		return mMode;
		}

		/**
		* Indicates for which channels the gain can be controlled
		* (e.g. AudioFormat.CHANNEL_OUT_STEREO)
		*/
		public int channelMask() {
		return mChannelMask;
		}

		/**
		* Minimum gain value in millibel
		*/
		public int minValue() {
		return mMinValue;
		}

		/**
		* Maximum gain value in millibel
		*/
		public int maxValue() {
		return mMaxValue;
		}

		/**
		* Default gain value in millibel
		*/
		public int defaultValue() {
		return mDefaultValue;
		}

		/**
		* Granularity of gain control in millibel
		*/
		public int stepValue() {
		return mStepValue;
		}

		/**
		* Minimum ramp duration in milliseconds
		* 0 if MODE_RAMP not set
		*/
		public int rampDurationMinMs() {
		return mRampDurationMinMs;
		}

		/**
		* Maximum ramp duration in milliseconds
		* 0 if MODE_RAMP not set
		*/
		public int rampDurationMaxMs() {
		return mRampDurationMaxMs;
		}

		/**
		* Build a valid gain configuration for this gain controller for use by
		* AudioPortDescriptor.setGain()
		* @param mode: desired mode of operation
		* @param channelMask: channels of which the gain should be modified.
		* @param values: gain values for each channels.
		* @param rampDurationMs: ramp duration if mode MODE_RAMP is set.
		* ignored if MODE_JOINT.
		*/
		public AudioGainConfig buildConfig(int mode, int channelMask,
		int[] values, int rampDurationMs) {
		//TODO: check params here
		return new AudioGainConfig(mIndex, this, mode, channelMask, values, rampDurationMs);
		}
		}

media/java/android/media/AudioGainConfig.java

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		/*
		* Copyright (C) 2014 The Android Open Source Project
		*
		* 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.
		*/

		package android.media;

		/**
		* The AudioGainConfig is used by APIs setting or getting values on a given gain
		* controller. It contains a valid configuration (value, channels...) for a gain controller
		* exposed by an audio port.
		* @see AudioGain
		* @see AudioPort
		* @hide
		*/
		public class AudioGainConfig {
		AudioGain mGain;
		private final int mIndex;
		private final int mMode;
		private final int mChannelMask;
		private final int mValues[];
		private final int mRampDurationMs;

		AudioGainConfig(int index, AudioGain gain, int mode, int channelMask,
		int[] values, int rampDurationMs) {
		mIndex = index;
		mGain = gain;
		mMode = mode;
		mChannelMask = channelMask;
		mValues = values;
		mRampDurationMs = rampDurationMs;
		}

		/**
		* get the index of the parent gain.
		* frameworks use only.
		*/
		int index() {
		return mIndex;
		}

		/**
		* Bit field indicating requested modes of operation. See {@link AudioGain#MODE_JOINT},
		* {@link AudioGain#MODE_CHANNELS}, {@link AudioGain#MODE_RAMP}
		*/
		public int mode() {
		return mMode;
		}

		/**
		* Indicates for which channels the gain is set.
		* See {@link AudioFormat#CHANNEL_OUT_STEREO}, {@link AudioFormat#CHANNEL_OUT_MONO} ...
		*/
		public int channelMask() {
		return mChannelMask;
		}

		/**
		* Gain values for each channel in the order of bits set in
		* channelMask() from LSB to MSB
		*/
		public int[] values() {
		return mValues;
		}

		/**
		* Ramp duration in milliseconds. N/A if mode() does not
		* specify MODE_RAMP.
		*/
		public int rampDurationMs() {
		return mRampDurationMs;
		}
		}

media/java/android/media/AudioHandle.java

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		/*
		* Copyright (C) 2014 The Android Open Source Project
		*
		* 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.
		*/

		package android.media;

		/**
		* The AudioHandle is used by the audio framework implementation to
		* uniquely identify a particular component of the routing topology
		* (AudioPort or AudioPatch)
		* It is not visible or used at the API.
		*/
		class AudioHandle {
		private final int mId;

		AudioHandle(int id) {
		mId = id;
		}

		int id() {
		return mId;
		}

		@Override
		public boolean equals(Object o) {
		if (o == null \|\| !(o instanceof AudioHandle)) {
		return false;
		}
		AudioHandle ah = (AudioHandle)o;
		return mId == ah.id();
		}

		@Override
		public int hashCode() {
		return mId;
		}
		}