| /* |
| * Copyright (C) 2016 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; |
| |
| import android.annotation.IntDef; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.Log; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.ArrayList; |
| import java.util.Objects; |
| |
| /** |
| * The AudioRecordingConfiguration class collects the information describing an audio recording |
| * session. |
| * <p>Direct polling (see {@link AudioManager#getActiveRecordingConfigurations()}) or callback |
| * (see {@link AudioManager#registerAudioRecordingCallback(android.media.AudioManager.AudioRecordingCallback, android.os.Handler)} |
| * methods are ways to receive information about the current recording configuration of the device. |
| * <p>An audio recording configuration contains information about the recording format as used by |
| * the application ({@link #getClientFormat()}, as well as the recording format actually used by |
| * the device ({@link #getFormat()}). The two recording formats may, for instance, be at different |
| * sampling rates due to hardware limitations (e.g. application recording at 44.1kHz whereas the |
| * device always records at 48kHz, and the Android framework resamples for the application). |
| * <p>The configuration also contains the use case for which audio is recorded |
| * ({@link #getClientAudioSource()}), enabling the ability to distinguish between different |
| * activities such as ongoing voice recognition or camcorder recording. |
| * |
| */ |
| public final class AudioRecordingConfiguration implements Parcelable { |
| private final static String TAG = new String("AudioRecordingConfiguration"); |
| |
| private final int mSessionId; |
| |
| private final int mClientSource; |
| |
| private final AudioFormat mDeviceFormat; |
| private final AudioFormat mClientFormat; |
| |
| private final int mPatchHandle; |
| |
| /** |
| * @hide |
| */ |
| public AudioRecordingConfiguration(int session, int source, AudioFormat clientFormat, |
| AudioFormat devFormat, int patchHandle) { |
| mSessionId = session; |
| mClientSource = source; |
| mClientFormat = clientFormat; |
| mDeviceFormat = devFormat; |
| mPatchHandle = patchHandle; |
| } |
| |
| // matches the sources that return false in MediaRecorder.isSystemOnlyAudioSource(source) |
| /** @hide */ |
| @IntDef({ |
| MediaRecorder.AudioSource.DEFAULT, |
| MediaRecorder.AudioSource.MIC, |
| MediaRecorder.AudioSource.VOICE_UPLINK, |
| MediaRecorder.AudioSource.VOICE_DOWNLINK, |
| MediaRecorder.AudioSource.VOICE_CALL, |
| MediaRecorder.AudioSource.CAMCORDER, |
| MediaRecorder.AudioSource.VOICE_RECOGNITION, |
| MediaRecorder.AudioSource.VOICE_COMMUNICATION, |
| MediaRecorder.AudioSource.UNPROCESSED |
| }) |
| @Retention(RetentionPolicy.SOURCE) |
| public @interface AudioSource {} |
| |
| // documented return values match the sources that return false |
| // in MediaRecorder.isSystemOnlyAudioSource(source) |
| /** |
| * Returns the audio source being used for the recording. |
| * @return one of {@link MediaRecorder.AudioSource#DEFAULT}, |
| * {@link MediaRecorder.AudioSource#MIC}, |
| * {@link MediaRecorder.AudioSource#VOICE_UPLINK}, |
| * {@link MediaRecorder.AudioSource#VOICE_DOWNLINK}, |
| * {@link MediaRecorder.AudioSource#VOICE_CALL}, |
| * {@link MediaRecorder.AudioSource#CAMCORDER}, |
| * {@link MediaRecorder.AudioSource#VOICE_RECOGNITION}, |
| * {@link MediaRecorder.AudioSource#VOICE_COMMUNICATION}, |
| * {@link MediaRecorder.AudioSource#UNPROCESSED}. |
| */ |
| public @AudioSource int getClientAudioSource() { return mClientSource; } |
| |
| /** |
| * Returns the session number of the recording, see {@link AudioRecord#getAudioSessionId()}. |
| * @return the session number. |
| */ |
| public int getClientAudioSessionId() { return mSessionId; } |
| |
| /** |
| * Returns the audio format at which audio is recorded on this Android device. |
| * Note that it may differ from the client application recording format |
| * (see {@link #getClientFormat()}). |
| * @return the device recording format |
| */ |
| public AudioFormat getFormat() { return mDeviceFormat; } |
| |
| /** |
| * Returns the audio format at which the client application is recording audio. |
| * Note that it may differ from the actual recording format (see {@link #getFormat()}). |
| * @return the recording format |
| */ |
| public AudioFormat getClientFormat() { return mClientFormat; } |
| |
| /** |
| * Returns information about the audio input device used for this recording. |
| * @return the audio recording device or null if this information cannot be retrieved |
| */ |
| public AudioDeviceInfo getAudioDevice() { |
| // build the AudioDeviceInfo from the patch handle |
| ArrayList<AudioPatch> patches = new ArrayList<AudioPatch>(); |
| if (AudioManager.listAudioPatches(patches) != AudioManager.SUCCESS) { |
| Log.e(TAG, "Error retrieving list of audio patches"); |
| return null; |
| } |
| for (int i = 0 ; i < patches.size() ; i++) { |
| final AudioPatch patch = patches.get(i); |
| if (patch.id() == mPatchHandle) { |
| final AudioPortConfig[] sources = patch.sources(); |
| if ((sources != null) && (sources.length > 0)) { |
| // not supporting multiple sources, so just look at the first source |
| final int devId = sources[0].port().id(); |
| final AudioDeviceInfo[] devices = |
| AudioManager.getDevicesStatic(AudioManager.GET_DEVICES_INPUTS); |
| for (int j = 0; j < devices.length; j++) { |
| if (devices[j].getId() == devId) { |
| return devices[j]; |
| } |
| } |
| } |
| // patch handle is unique, there won't be another with the same handle |
| break; |
| } |
| } |
| Log.e(TAG, "Couldn't find device for recording, did recording end already?"); |
| return null; |
| } |
| |
| public static final Parcelable.Creator<AudioRecordingConfiguration> CREATOR |
| = new Parcelable.Creator<AudioRecordingConfiguration>() { |
| /** |
| * Rebuilds an AudioRecordingConfiguration previously stored with writeToParcel(). |
| * @param p Parcel object to read the AudioRecordingConfiguration from |
| * @return a new AudioRecordingConfiguration created from the data in the parcel |
| */ |
| public AudioRecordingConfiguration createFromParcel(Parcel p) { |
| return new AudioRecordingConfiguration(p); |
| } |
| public AudioRecordingConfiguration[] newArray(int size) { |
| return new AudioRecordingConfiguration[size]; |
| } |
| }; |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mSessionId, mClientSource); |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeInt(mSessionId); |
| dest.writeInt(mClientSource); |
| mClientFormat.writeToParcel(dest, 0); |
| mDeviceFormat.writeToParcel(dest, 0); |
| dest.writeInt(mPatchHandle); |
| } |
| |
| private AudioRecordingConfiguration(Parcel in) { |
| mSessionId = in.readInt(); |
| mClientSource = in.readInt(); |
| mClientFormat = AudioFormat.CREATOR.createFromParcel(in); |
| mDeviceFormat = AudioFormat.CREATOR.createFromParcel(in); |
| mPatchHandle = in.readInt(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || !(o instanceof AudioRecordingConfiguration)) return false; |
| |
| AudioRecordingConfiguration that = (AudioRecordingConfiguration) o; |
| |
| return ((mSessionId == that.mSessionId) |
| && (mClientSource == that.mClientSource) |
| && (mPatchHandle == that.mPatchHandle) |
| && (mClientFormat.equals(that.mClientFormat)) |
| && (mDeviceFormat.equals(that.mDeviceFormat))); |
| } |
| } |