| /* |
| * Copyright (C) 2008 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 java.lang.ref.WeakReference; |
| import java.nio.ByteBuffer; |
| import java.util.Iterator; |
| |
| import android.os.Binder; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.util.Log; |
| |
| /** |
| * The AudioRecord class manages the audio resources for Java applications |
| * to record audio from the audio input hardware of the platform. This is |
| * achieved by "pulling" (reading) the data from the AudioRecord object. The |
| * application is responsible for polling the AudioRecord object in time using one of |
| * the following three methods: {@link #read(byte[],int, int)}, {@link #read(short[], int, int)} |
| * or {@link #read(ByteBuffer, int)}. The choice of which method to use will be based |
| * on the audio data storage format that is the most convenient for the user of AudioRecord. |
| * <p>Upon creation, an AudioRecord object initializes its associated audio buffer that it will |
| * fill with the new audio data. The size of this buffer, specified during the construction, |
| * determines how long an AudioRecord can record before "over-running" data that has not |
| * been read yet. Data should be read from the audio hardware in chunks of sizes inferior to |
| * the total recording buffer size. |
| */ |
| public class AudioRecord |
| { |
| //--------------------------------------------------------- |
| // Constants |
| //-------------------- |
| /** |
| * indicates AudioRecord state is not successfully initialized. |
| */ |
| public static final int STATE_UNINITIALIZED = 0; |
| /** |
| * indicates AudioRecord state is ready to be used |
| */ |
| public static final int STATE_INITIALIZED = 1; |
| |
| /** |
| * indicates AudioRecord recording state is not recording |
| */ |
| public static final int RECORDSTATE_STOPPED = 1; // matches SL_RECORDSTATE_STOPPED |
| /** |
| * indicates AudioRecord recording state is recording |
| */ |
| public static final int RECORDSTATE_RECORDING = 3;// matches SL_RECORDSTATE_RECORDING |
| |
| /** |
| * Denotes a successful operation. |
| */ |
| public static final int SUCCESS = AudioSystem.SUCCESS; |
| /** |
| * Denotes a generic operation failure. |
| */ |
| public static final int ERROR = AudioSystem.ERROR; |
| /** |
| * Denotes a failure due to the use of an invalid value. |
| */ |
| public static final int ERROR_BAD_VALUE = AudioSystem.BAD_VALUE; |
| /** |
| * Denotes a failure due to the improper use of a method. |
| */ |
| public static final int ERROR_INVALID_OPERATION = AudioSystem.INVALID_OPERATION; |
| |
| // Error codes: |
| // to keep in sync with frameworks/base/core/jni/android_media_AudioRecord.cpp |
| private static final int AUDIORECORD_ERROR_SETUP_ZEROFRAMECOUNT = -16; |
| private static final int AUDIORECORD_ERROR_SETUP_INVALIDCHANNELMASK = -17; |
| private static final int AUDIORECORD_ERROR_SETUP_INVALIDFORMAT = -18; |
| private static final int AUDIORECORD_ERROR_SETUP_INVALIDSOURCE = -19; |
| private static final int AUDIORECORD_ERROR_SETUP_NATIVEINITFAILED = -20; |
| |
| // Events: |
| // to keep in sync with frameworks/av/include/media/AudioRecord.h |
| /** |
| * Event id denotes when record head has reached a previously set marker. |
| */ |
| private static final int NATIVE_EVENT_MARKER = 2; |
| /** |
| * Event id denotes when previously set update period has elapsed during recording. |
| */ |
| private static final int NATIVE_EVENT_NEW_POS = 3; |
| |
| private final static String TAG = "android.media.AudioRecord"; |
| |
| /** @hide */ |
| public final static String SUBMIX_FIXED_VOLUME = "fixedVolume"; |
| |
| //--------------------------------------------------------- |
| // Used exclusively by native code |
| //-------------------- |
| /** |
| * Accessed by native methods: provides access to C++ AudioRecord object |
| */ |
| @SuppressWarnings("unused") |
| private long mNativeRecorderInJavaObj; |
| |
| /** |
| * Accessed by native methods: provides access to the callback data. |
| */ |
| @SuppressWarnings("unused") |
| private long mNativeCallbackCookie; |
| |
| |
| //--------------------------------------------------------- |
| // Member variables |
| //-------------------- |
| /** |
| * The audio data sampling rate in Hz. |
| */ |
| private int mSampleRate; |
| /** |
| * The number of input audio channels (1 is mono, 2 is stereo) |
| */ |
| private int mChannelCount; |
| /** |
| * The audio channel mask |
| */ |
| private int mChannelMask; |
| /** |
| * The encoding of the audio samples. |
| * @see AudioFormat#ENCODING_PCM_8BIT |
| * @see AudioFormat#ENCODING_PCM_16BIT |
| */ |
| private int mAudioFormat; |
| /** |
| * Where the audio data is recorded from. |
| */ |
| private int mRecordSource; |
| /** |
| * Indicates the state of the AudioRecord instance. |
| */ |
| private int mState = STATE_UNINITIALIZED; |
| /** |
| * Indicates the recording state of the AudioRecord instance. |
| */ |
| private int mRecordingState = RECORDSTATE_STOPPED; |
| /** |
| * Lock to make sure mRecordingState updates are reflecting the actual state of the object. |
| */ |
| private final Object mRecordingStateLock = new Object(); |
| /** |
| * The listener the AudioRecord notifies when the record position reaches a marker |
| * or for periodic updates during the progression of the record head. |
| * @see #setRecordPositionUpdateListener(OnRecordPositionUpdateListener) |
| * @see #setRecordPositionUpdateListener(OnRecordPositionUpdateListener, Handler) |
| */ |
| private OnRecordPositionUpdateListener mPositionListener = null; |
| /** |
| * Lock to protect position listener updates against event notifications |
| */ |
| private final Object mPositionListenerLock = new Object(); |
| /** |
| * Handler for marker events coming from the native code |
| */ |
| private NativeEventHandler mEventHandler = null; |
| /** |
| * Looper associated with the thread that creates the AudioRecord instance |
| */ |
| private Looper mInitializationLooper = null; |
| /** |
| * Size of the native audio buffer. |
| */ |
| private int mNativeBufferSizeInBytes = 0; |
| /** |
| * Audio session ID |
| */ |
| private int mSessionId = AudioSystem.AUDIO_SESSION_ALLOCATE; |
| /** |
| * AudioAttributes |
| */ |
| private AudioAttributes mAudioAttributes; |
| private boolean mIsSubmixFullVolume = false; |
| |
| //--------------------------------------------------------- |
| // Constructor, Finalize |
| //-------------------- |
| /** |
| * Class constructor. |
| * Though some invalid parameters will result in an {@link IllegalArgumentException} exception, |
| * other errors do not. Thus you should call {@link #getState()} immediately after construction |
| * to confirm that the object is usable. |
| * @param audioSource the recording source (also referred to as capture preset). |
| * See {@link MediaRecorder.AudioSource} for the capture preset definitions. |
| * @param sampleRateInHz the sample rate expressed in Hertz. 44100Hz is currently the only |
| * rate that is guaranteed to work on all devices, but other rates such as 22050, |
| * 16000, and 11025 may work on some devices. |
| * @param channelConfig describes the configuration of the audio channels. |
| * See {@link AudioFormat#CHANNEL_IN_MONO} and |
| * {@link AudioFormat#CHANNEL_IN_STEREO}. {@link AudioFormat#CHANNEL_IN_MONO} is guaranteed |
| * to work on all devices. |
| * @param audioFormat the format in which the audio data is represented. |
| * See {@link AudioFormat#ENCODING_PCM_16BIT} and |
| * {@link AudioFormat#ENCODING_PCM_8BIT} |
| * @param bufferSizeInBytes the total size (in bytes) of the buffer where audio data is written |
| * to during the recording. New audio data can be read from this buffer in smaller chunks |
| * than this size. See {@link #getMinBufferSize(int, int, int)} to determine the minimum |
| * required buffer size for the successful creation of an AudioRecord instance. Using values |
| * smaller than getMinBufferSize() will result in an initialization failure. |
| * @throws java.lang.IllegalArgumentException |
| */ |
| public AudioRecord(int audioSource, int sampleRateInHz, int channelConfig, int audioFormat, |
| int bufferSizeInBytes) |
| throws IllegalArgumentException { |
| this((new AudioAttributes.Builder()) |
| .setInternalCapturePreset(audioSource) |
| .build(), |
| (new AudioFormat.Builder()) |
| .setChannelMask(getChannelMaskFromLegacyConfig(channelConfig, |
| true/*allow legacy configurations*/)) |
| .setEncoding(audioFormat) |
| .setSampleRate(sampleRateInHz) |
| .build(), |
| bufferSizeInBytes, |
| AudioManager.AUDIO_SESSION_ID_GENERATE); |
| } |
| |
| /** |
| * @hide |
| * CANDIDATE FOR PUBLIC API |
| * Class constructor with {@link AudioAttributes} and {@link AudioFormat}. |
| * @param attributes a non-null {@link AudioAttributes} instance. Use |
| * {@link AudioAttributes.Builder#setCapturePreset(int)} for configuring the capture |
| * preset for this instance. |
| * @param format a non-null {@link AudioFormat} instance describing the format of the data |
| * that will be recorded through this AudioRecord. See {@link AudioFormat.Builder} for |
| * configuring the audio format parameters such as encoding, channel mask and sample rate. |
| * @param bufferSizeInBytes the total size (in bytes) of the buffer where audio data is written |
| * to during the recording. New audio data can be read from this buffer in smaller chunks |
| * than this size. See {@link #getMinBufferSize(int, int, int)} to determine the minimum |
| * required buffer size for the successful creation of an AudioRecord instance. Using values |
| * smaller than getMinBufferSize() will result in an initialization failure. |
| * @param sessionId ID of audio session the AudioRecord must be attached to, or |
| * {@link AudioManager#AUDIO_SESSION_ID_GENERATE} if the session isn't known at construction |
| * time. See also {@link AudioManager#generateAudioSessionId()} to obtain a session ID before |
| * construction. |
| * @throws IllegalArgumentException |
| */ |
| public AudioRecord(AudioAttributes attributes, AudioFormat format, int bufferSizeInBytes, |
| int sessionId) throws IllegalArgumentException { |
| mRecordingState = RECORDSTATE_STOPPED; |
| |
| if (attributes == null) { |
| throw new IllegalArgumentException("Illegal null AudioAttributes"); |
| } |
| if (format == null) { |
| throw new IllegalArgumentException("Illegal null AudioFormat"); |
| } |
| |
| // remember which looper is associated with the AudioRecord instanciation |
| if ((mInitializationLooper = Looper.myLooper()) == null) { |
| mInitializationLooper = Looper.getMainLooper(); |
| } |
| |
| mAudioAttributes = attributes; |
| |
| // is this AudioRecord using REMOTE_SUBMIX at full volume? |
| if (mAudioAttributes.getCapturePreset() == MediaRecorder.AudioSource.REMOTE_SUBMIX) { |
| final Iterator<String> tagsIter = mAudioAttributes.getTags().iterator(); |
| while (tagsIter.hasNext()) { |
| if (tagsIter.next().equalsIgnoreCase(SUBMIX_FIXED_VOLUME)) { |
| mIsSubmixFullVolume = true; |
| Log.v(TAG, "Will record from REMOTE_SUBMIX at full fixed volume"); |
| break; |
| } |
| } |
| } |
| |
| int rate = 0; |
| if ((format.getPropertySetMask() |
| & AudioFormat.AUDIO_FORMAT_HAS_PROPERTY_SAMPLE_RATE) != 0) |
| { |
| rate = format.getSampleRate(); |
| } else { |
| rate = AudioSystem.getPrimaryOutputSamplingRate(); |
| if (rate <= 0) { |
| rate = 44100; |
| } |
| } |
| |
| int encoding = AudioFormat.ENCODING_DEFAULT; |
| if ((format.getPropertySetMask() & AudioFormat.AUDIO_FORMAT_HAS_PROPERTY_ENCODING) != 0) |
| { |
| encoding = format.getEncoding(); |
| } |
| |
| audioParamCheck(attributes.getCapturePreset(), rate, encoding); |
| |
| mChannelCount = AudioFormat.channelCountFromInChannelMask(format.getChannelMask()); |
| mChannelMask = getChannelMaskFromLegacyConfig(format.getChannelMask(), false); |
| |
| audioBuffSizeCheck(bufferSizeInBytes); |
| |
| int[] session = new int[1]; |
| session[0] = sessionId; |
| //TODO: update native initialization when information about hardware init failure |
| // due to capture device already open is available. |
| int initResult = native_setup( new WeakReference<AudioRecord>(this), |
| mAudioAttributes, mSampleRate, mChannelMask, mAudioFormat, mNativeBufferSizeInBytes, |
| session); |
| if (initResult != SUCCESS) { |
| loge("Error code "+initResult+" when initializing native AudioRecord object."); |
| return; // with mState == STATE_UNINITIALIZED |
| } |
| |
| mSessionId = session[0]; |
| |
| mState = STATE_INITIALIZED; |
| } |
| |
| // Convenience method for the constructor's parameter checks. |
| // This, getChannelMaskFromLegacyConfig and audioBuffSizeCheck are where constructor |
| // IllegalArgumentException-s are thrown |
| private static int getChannelMaskFromLegacyConfig(int inChannelConfig, |
| boolean allowLegacyConfig) { |
| int mask; |
| switch (inChannelConfig) { |
| case AudioFormat.CHANNEL_IN_DEFAULT: // AudioFormat.CHANNEL_CONFIGURATION_DEFAULT |
| case AudioFormat.CHANNEL_IN_MONO: |
| case AudioFormat.CHANNEL_CONFIGURATION_MONO: |
| mask = AudioFormat.CHANNEL_IN_MONO; |
| break; |
| case AudioFormat.CHANNEL_IN_STEREO: |
| case AudioFormat.CHANNEL_CONFIGURATION_STEREO: |
| mask = AudioFormat.CHANNEL_IN_STEREO; |
| break; |
| case (AudioFormat.CHANNEL_IN_FRONT | AudioFormat.CHANNEL_IN_BACK): |
| mask = inChannelConfig; |
| break; |
| default: |
| throw new IllegalArgumentException("Unsupported channel configuration."); |
| } |
| |
| if (!allowLegacyConfig && ((inChannelConfig == AudioFormat.CHANNEL_CONFIGURATION_MONO) |
| || (inChannelConfig == AudioFormat.CHANNEL_CONFIGURATION_STEREO))) { |
| // only happens with the constructor that uses AudioAttributes and AudioFormat |
| throw new IllegalArgumentException("Unsupported deprecated configuration."); |
| } |
| |
| return mask; |
| } |
| // postconditions: |
| // mRecordSource is valid |
| // mAudioFormat is valid |
| // mSampleRate is valid |
| private void audioParamCheck(int audioSource, int sampleRateInHz, int audioFormat) |
| throws IllegalArgumentException { |
| |
| //-------------- |
| // audio source |
| if ( (audioSource < MediaRecorder.AudioSource.DEFAULT) || |
| ((audioSource > MediaRecorder.getAudioSourceMax()) && |
| (audioSource != MediaRecorder.AudioSource.FM_TUNER) && |
| (audioSource != MediaRecorder.AudioSource.HOTWORD)) ) { |
| throw new IllegalArgumentException("Invalid audio source."); |
| } |
| mRecordSource = audioSource; |
| |
| //-------------- |
| // sample rate |
| if ( (sampleRateInHz < 4000) || (sampleRateInHz > 48000) ) { |
| throw new IllegalArgumentException(sampleRateInHz |
| + "Hz is not a supported sample rate."); |
| } |
| mSampleRate = sampleRateInHz; |
| |
| //-------------- |
| // audio format |
| switch (audioFormat) { |
| case AudioFormat.ENCODING_DEFAULT: |
| mAudioFormat = AudioFormat.ENCODING_PCM_16BIT; |
| break; |
| case AudioFormat.ENCODING_PCM_16BIT: |
| case AudioFormat.ENCODING_PCM_8BIT: |
| mAudioFormat = audioFormat; |
| break; |
| default: |
| throw new IllegalArgumentException("Unsupported sample encoding." |
| + " Should be ENCODING_PCM_8BIT or ENCODING_PCM_16BIT."); |
| } |
| } |
| |
| |
| // Convenience method for the contructor's audio buffer size check. |
| // preconditions: |
| // mChannelCount is valid |
| // mAudioFormat is AudioFormat.ENCODING_PCM_8BIT OR AudioFormat.ENCODING_PCM_16BIT |
| // postcondition: |
| // mNativeBufferSizeInBytes is valid (multiple of frame size, positive) |
| private void audioBuffSizeCheck(int audioBufferSize) throws IllegalArgumentException { |
| // NB: this section is only valid with PCM data. |
| // To update when supporting compressed formats |
| int frameSizeInBytes = mChannelCount |
| * (AudioFormat.getBytesPerSample(mAudioFormat)); |
| if ((audioBufferSize % frameSizeInBytes != 0) || (audioBufferSize < 1)) { |
| throw new IllegalArgumentException("Invalid audio buffer size."); |
| } |
| |
| mNativeBufferSizeInBytes = audioBufferSize; |
| } |
| |
| |
| |
| /** |
| * Releases the native AudioRecord resources. |
| * The object can no longer be used and the reference should be set to null |
| * after a call to release() |
| */ |
| public void release() { |
| try { |
| stop(); |
| } catch(IllegalStateException ise) { |
| // don't raise an exception, we're releasing the resources. |
| } |
| native_release(); |
| mState = STATE_UNINITIALIZED; |
| } |
| |
| |
| @Override |
| protected void finalize() { |
| // will cause stop() to be called, and if appropriate, will handle fixed volume recording |
| release(); |
| } |
| |
| |
| //-------------------------------------------------------------------------- |
| // Getters |
| //-------------------- |
| /** |
| * Returns the configured audio data sample rate in Hz |
| */ |
| public int getSampleRate() { |
| return mSampleRate; |
| } |
| |
| /** |
| * Returns the audio recording source. |
| * @see MediaRecorder.AudioSource |
| */ |
| public int getAudioSource() { |
| return mRecordSource; |
| } |
| |
| /** |
| * Returns the configured audio data format. See {@link AudioFormat#ENCODING_PCM_16BIT} |
| * and {@link AudioFormat#ENCODING_PCM_8BIT}. |
| */ |
| public int getAudioFormat() { |
| return mAudioFormat; |
| } |
| |
| /** |
| * Returns the configured channel configuration. |
| * See {@link AudioFormat#CHANNEL_IN_MONO} |
| * and {@link AudioFormat#CHANNEL_IN_STEREO}. |
| */ |
| public int getChannelConfiguration() { |
| return mChannelMask; |
| } |
| |
| /** |
| * Returns the configured number of channels. |
| */ |
| public int getChannelCount() { |
| return mChannelCount; |
| } |
| |
| /** |
| * Returns the state of the AudioRecord instance. This is useful after the |
| * AudioRecord instance has been created to check if it was initialized |
| * properly. This ensures that the appropriate hardware resources have been |
| * acquired. |
| * @see AudioRecord#STATE_INITIALIZED |
| * @see AudioRecord#STATE_UNINITIALIZED |
| */ |
| public int getState() { |
| return mState; |
| } |
| |
| /** |
| * Returns the recording state of the AudioRecord instance. |
| * @see AudioRecord#RECORDSTATE_STOPPED |
| * @see AudioRecord#RECORDSTATE_RECORDING |
| */ |
| public int getRecordingState() { |
| synchronized (mRecordingStateLock) { |
| return mRecordingState; |
| } |
| } |
| |
| /** |
| * Returns the notification marker position expressed in frames. |
| */ |
| public int getNotificationMarkerPosition() { |
| return native_get_marker_pos(); |
| } |
| |
| /** |
| * Returns the notification update period expressed in frames. |
| */ |
| public int getPositionNotificationPeriod() { |
| return native_get_pos_update_period(); |
| } |
| |
| /** |
| * Returns the minimum buffer size required for the successful creation of an AudioRecord |
| * object, in byte units. |
| * Note that this size doesn't guarantee a smooth recording under load, and higher values |
| * should be chosen according to the expected frequency at which the AudioRecord instance |
| * will be polled for new data. |
| * See {@link #AudioRecord(int, int, int, int, int)} for more information on valid |
| * configuration values. |
| * @param sampleRateInHz the sample rate expressed in Hertz. |
| * @param channelConfig describes the configuration of the audio channels. |
| * See {@link AudioFormat#CHANNEL_IN_MONO} and |
| * {@link AudioFormat#CHANNEL_IN_STEREO} |
| * @param audioFormat the format in which the audio data is represented. |
| * See {@link AudioFormat#ENCODING_PCM_16BIT}. |
| * @return {@link #ERROR_BAD_VALUE} if the recording parameters are not supported by the |
| * hardware, or an invalid parameter was passed, |
| * or {@link #ERROR} if the implementation was unable to query the hardware for its |
| * input properties, |
| * or the minimum buffer size expressed in bytes. |
| * @see #AudioRecord(int, int, int, int, int) |
| */ |
| static public int getMinBufferSize(int sampleRateInHz, int channelConfig, int audioFormat) { |
| int channelCount = 0; |
| switch (channelConfig) { |
| case AudioFormat.CHANNEL_IN_DEFAULT: // AudioFormat.CHANNEL_CONFIGURATION_DEFAULT |
| case AudioFormat.CHANNEL_IN_MONO: |
| case AudioFormat.CHANNEL_CONFIGURATION_MONO: |
| channelCount = 1; |
| break; |
| case AudioFormat.CHANNEL_IN_STEREO: |
| case AudioFormat.CHANNEL_CONFIGURATION_STEREO: |
| case (AudioFormat.CHANNEL_IN_FRONT | AudioFormat.CHANNEL_IN_BACK): |
| channelCount = 2; |
| break; |
| case AudioFormat.CHANNEL_INVALID: |
| default: |
| loge("getMinBufferSize(): Invalid channel configuration."); |
| return ERROR_BAD_VALUE; |
| } |
| |
| // PCM_8BIT is not supported at the moment |
| if (audioFormat != AudioFormat.ENCODING_PCM_16BIT) { |
| loge("getMinBufferSize(): Invalid audio format."); |
| return ERROR_BAD_VALUE; |
| } |
| |
| int size = native_get_min_buff_size(sampleRateInHz, channelCount, audioFormat); |
| if (size == 0) { |
| return ERROR_BAD_VALUE; |
| } |
| else if (size == -1) { |
| return ERROR; |
| } |
| else { |
| return size; |
| } |
| } |
| |
| /** |
| * Returns the audio session ID. |
| * |
| * @return the ID of the audio session this AudioRecord belongs to. |
| */ |
| public int getAudioSessionId() { |
| return mSessionId; |
| } |
| |
| //--------------------------------------------------------- |
| // Transport control methods |
| //-------------------- |
| /** |
| * Starts recording from the AudioRecord instance. |
| * @throws IllegalStateException |
| */ |
| public void startRecording() |
| throws IllegalStateException { |
| if (mState != STATE_INITIALIZED) { |
| throw new IllegalStateException("startRecording() called on an " |
| + "uninitialized AudioRecord."); |
| } |
| |
| // start recording |
| synchronized(mRecordingStateLock) { |
| if (native_start(MediaSyncEvent.SYNC_EVENT_NONE, 0) == SUCCESS) { |
| handleFullVolumeRec(true); |
| mRecordingState = RECORDSTATE_RECORDING; |
| } |
| } |
| } |
| |
| /** |
| * Starts recording from the AudioRecord instance when the specified synchronization event |
| * occurs on the specified audio session. |
| * @throws IllegalStateException |
| * @param syncEvent event that triggers the capture. |
| * @see MediaSyncEvent |
| */ |
| public void startRecording(MediaSyncEvent syncEvent) |
| throws IllegalStateException { |
| if (mState != STATE_INITIALIZED) { |
| throw new IllegalStateException("startRecording() called on an " |
| + "uninitialized AudioRecord."); |
| } |
| |
| // start recording |
| synchronized(mRecordingStateLock) { |
| if (native_start(syncEvent.getType(), syncEvent.getAudioSessionId()) == SUCCESS) { |
| handleFullVolumeRec(true); |
| mRecordingState = RECORDSTATE_RECORDING; |
| } |
| } |
| } |
| |
| /** |
| * Stops recording. |
| * @throws IllegalStateException |
| */ |
| public void stop() |
| throws IllegalStateException { |
| if (mState != STATE_INITIALIZED) { |
| throw new IllegalStateException("stop() called on an uninitialized AudioRecord."); |
| } |
| |
| // stop recording |
| synchronized(mRecordingStateLock) { |
| handleFullVolumeRec(false); |
| native_stop(); |
| mRecordingState = RECORDSTATE_STOPPED; |
| } |
| } |
| |
| private final IBinder mICallBack = new Binder(); |
| private void handleFullVolumeRec(boolean starting) { |
| if (!mIsSubmixFullVolume) { |
| return; |
| } |
| final IBinder b = ServiceManager.getService(android.content.Context.AUDIO_SERVICE); |
| final IAudioService ias = IAudioService.Stub.asInterface(b); |
| try { |
| ias.forceRemoteSubmixFullVolume(starting, mICallBack); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Error talking to AudioService when handling full submix volume", e); |
| } |
| } |
| |
| //--------------------------------------------------------- |
| // Audio data supply |
| //-------------------- |
| /** |
| * Reads audio data from the audio hardware for recording into a buffer. |
| * @param audioData the array to which the recorded audio data is written. |
| * @param offsetInBytes index in audioData from which the data is written expressed in bytes. |
| * @param sizeInBytes the number of requested bytes. |
| * @return the number of bytes that were read or or {@link #ERROR_INVALID_OPERATION} |
| * if the object wasn't properly initialized, or {@link #ERROR_BAD_VALUE} if |
| * the parameters don't resolve to valid data and indexes. |
| * The number of bytes will not exceed sizeInBytes. |
| */ |
| public int read(byte[] audioData, int offsetInBytes, int sizeInBytes) { |
| if (mState != STATE_INITIALIZED) { |
| return ERROR_INVALID_OPERATION; |
| } |
| |
| if ( (audioData == null) || (offsetInBytes < 0 ) || (sizeInBytes < 0) |
| || (offsetInBytes + sizeInBytes < 0) // detect integer overflow |
| || (offsetInBytes + sizeInBytes > audioData.length)) { |
| return ERROR_BAD_VALUE; |
| } |
| |
| return native_read_in_byte_array(audioData, offsetInBytes, sizeInBytes); |
| } |
| |
| |
| /** |
| * Reads audio data from the audio hardware for recording into a buffer. |
| * @param audioData the array to which the recorded audio data is written. |
| * @param offsetInShorts index in audioData from which the data is written expressed in shorts. |
| * @param sizeInShorts the number of requested shorts. |
| * @return the number of shorts that were read or or {@link #ERROR_INVALID_OPERATION} |
| * if the object wasn't properly initialized, or {@link #ERROR_BAD_VALUE} if |
| * the parameters don't resolve to valid data and indexes. |
| * The number of shorts will not exceed sizeInShorts. |
| */ |
| public int read(short[] audioData, int offsetInShorts, int sizeInShorts) { |
| if (mState != STATE_INITIALIZED) { |
| return ERROR_INVALID_OPERATION; |
| } |
| |
| if ( (audioData == null) || (offsetInShorts < 0 ) || (sizeInShorts < 0) |
| || (offsetInShorts + sizeInShorts < 0) // detect integer overflow |
| || (offsetInShorts + sizeInShorts > audioData.length)) { |
| return ERROR_BAD_VALUE; |
| } |
| |
| return native_read_in_short_array(audioData, offsetInShorts, sizeInShorts); |
| } |
| |
| |
| /** |
| * Reads audio data from the audio hardware for recording into a direct buffer. If this buffer |
| * is not a direct buffer, this method will always return 0. |
| * Note that the value returned by {@link java.nio.Buffer#position()} on this buffer is |
| * unchanged after a call to this method. |
| * @param audioBuffer the direct buffer to which the recorded audio data is written. |
| * @param sizeInBytes the number of requested bytes. |
| * @return the number of bytes that were read or or {@link #ERROR_INVALID_OPERATION} |
| * if the object wasn't properly initialized, or {@link #ERROR_BAD_VALUE} if |
| * the parameters don't resolve to valid data and indexes. |
| * The number of bytes will not exceed sizeInBytes. |
| */ |
| public int read(ByteBuffer audioBuffer, int sizeInBytes) { |
| if (mState != STATE_INITIALIZED) { |
| return ERROR_INVALID_OPERATION; |
| } |
| |
| if ( (audioBuffer == null) || (sizeInBytes < 0) ) { |
| return ERROR_BAD_VALUE; |
| } |
| |
| return native_read_in_direct_buffer(audioBuffer, sizeInBytes); |
| } |
| |
| |
| //-------------------------------------------------------------------------- |
| // Initialization / configuration |
| //-------------------- |
| /** |
| * Sets the listener the AudioRecord notifies when a previously set marker is reached or |
| * for each periodic record head position update. |
| * @param listener |
| */ |
| public void setRecordPositionUpdateListener(OnRecordPositionUpdateListener listener) { |
| setRecordPositionUpdateListener(listener, null); |
| } |
| |
| /** |
| * Sets the listener the AudioRecord notifies when a previously set marker is reached or |
| * for each periodic record head position update. |
| * Use this method to receive AudioRecord events in the Handler associated with another |
| * thread than the one in which you created the AudioTrack instance. |
| * @param listener |
| * @param handler the Handler that will receive the event notification messages. |
| */ |
| public void setRecordPositionUpdateListener(OnRecordPositionUpdateListener listener, |
| Handler handler) { |
| synchronized (mPositionListenerLock) { |
| |
| mPositionListener = listener; |
| |
| if (listener != null) { |
| if (handler != null) { |
| mEventHandler = new NativeEventHandler(this, handler.getLooper()); |
| } else { |
| // no given handler, use the looper the AudioRecord was created in |
| mEventHandler = new NativeEventHandler(this, mInitializationLooper); |
| } |
| } else { |
| mEventHandler = null; |
| } |
| } |
| |
| } |
| |
| |
| /** |
| * Sets the marker position at which the listener is called, if set with |
| * {@link #setRecordPositionUpdateListener(OnRecordPositionUpdateListener)} or |
| * {@link #setRecordPositionUpdateListener(OnRecordPositionUpdateListener, Handler)}. |
| * @param markerInFrames marker position expressed in frames |
| * @return error code or success, see {@link #SUCCESS}, {@link #ERROR_BAD_VALUE}, |
| * {@link #ERROR_INVALID_OPERATION} |
| */ |
| public int setNotificationMarkerPosition(int markerInFrames) { |
| if (mState == STATE_UNINITIALIZED) { |
| return ERROR_INVALID_OPERATION; |
| } |
| return native_set_marker_pos(markerInFrames); |
| } |
| |
| |
| /** |
| * Sets the period at which the listener is called, if set with |
| * {@link #setRecordPositionUpdateListener(OnRecordPositionUpdateListener)} or |
| * {@link #setRecordPositionUpdateListener(OnRecordPositionUpdateListener, Handler)}. |
| * It is possible for notifications to be lost if the period is too small. |
| * @param periodInFrames update period expressed in frames |
| * @return error code or success, see {@link #SUCCESS}, {@link #ERROR_INVALID_OPERATION} |
| */ |
| public int setPositionNotificationPeriod(int periodInFrames) { |
| if (mState == STATE_UNINITIALIZED) { |
| return ERROR_INVALID_OPERATION; |
| } |
| return native_set_pos_update_period(periodInFrames); |
| } |
| |
| |
| //--------------------------------------------------------- |
| // Interface definitions |
| //-------------------- |
| /** |
| * Interface definition for a callback to be invoked when an AudioRecord has |
| * reached a notification marker set by {@link AudioRecord#setNotificationMarkerPosition(int)} |
| * or for periodic updates on the progress of the record head, as set by |
| * {@link AudioRecord#setPositionNotificationPeriod(int)}. |
| */ |
| public interface OnRecordPositionUpdateListener { |
| /** |
| * Called on the listener to notify it that the previously set marker has been reached |
| * by the recording head. |
| */ |
| void onMarkerReached(AudioRecord recorder); |
| |
| /** |
| * Called on the listener to periodically notify it that the record head has reached |
| * a multiple of the notification period. |
| */ |
| void onPeriodicNotification(AudioRecord recorder); |
| } |
| |
| |
| |
| //--------------------------------------------------------- |
| // Inner classes |
| //-------------------- |
| |
| /** |
| * Helper class to handle the forwarding of native events to the appropriate listener |
| * (potentially) handled in a different thread |
| */ |
| private class NativeEventHandler extends Handler { |
| |
| private final AudioRecord mAudioRecord; |
| |
| NativeEventHandler(AudioRecord recorder, Looper looper) { |
| super(looper); |
| mAudioRecord = recorder; |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| OnRecordPositionUpdateListener listener = null; |
| synchronized (mPositionListenerLock) { |
| listener = mAudioRecord.mPositionListener; |
| } |
| |
| switch (msg.what) { |
| case NATIVE_EVENT_MARKER: |
| if (listener != null) { |
| listener.onMarkerReached(mAudioRecord); |
| } |
| break; |
| case NATIVE_EVENT_NEW_POS: |
| if (listener != null) { |
| listener.onPeriodicNotification(mAudioRecord); |
| } |
| break; |
| default: |
| loge("Unknown native event type: " + msg.what); |
| break; |
| } |
| } |
| }; |
| |
| |
| //--------------------------------------------------------- |
| // Java methods called from the native side |
| //-------------------- |
| @SuppressWarnings("unused") |
| private static void postEventFromNative(Object audiorecord_ref, |
| int what, int arg1, int arg2, Object obj) { |
| //logd("Event posted from the native side: event="+ what + " args="+ arg1+" "+arg2); |
| AudioRecord recorder = (AudioRecord)((WeakReference)audiorecord_ref).get(); |
| if (recorder == null) { |
| return; |
| } |
| |
| if (recorder.mEventHandler != null) { |
| Message m = |
| recorder.mEventHandler.obtainMessage(what, arg1, arg2, obj); |
| recorder.mEventHandler.sendMessage(m); |
| } |
| |
| } |
| |
| |
| //--------------------------------------------------------- |
| // Native methods called from the Java side |
| //-------------------- |
| |
| private native final int native_setup(Object audiorecord_this, |
| Object /*AudioAttributes*/ attributes, |
| int sampleRate, int channelMask, int audioFormat, |
| int buffSizeInBytes, int[] sessionId); |
| |
| // TODO remove: implementation calls directly into implementation of native_release() |
| private native final void native_finalize(); |
| |
| private native final void native_release(); |
| |
| private native final int native_start(int syncEvent, int sessionId); |
| |
| private native final void native_stop(); |
| |
| private native final int native_read_in_byte_array(byte[] audioData, |
| int offsetInBytes, int sizeInBytes); |
| |
| private native final int native_read_in_short_array(short[] audioData, |
| int offsetInShorts, int sizeInShorts); |
| |
| private native final int native_read_in_direct_buffer(Object jBuffer, int sizeInBytes); |
| |
| private native final int native_set_marker_pos(int marker); |
| private native final int native_get_marker_pos(); |
| |
| private native final int native_set_pos_update_period(int updatePeriod); |
| private native final int native_get_pos_update_period(); |
| |
| static private native final int native_get_min_buff_size( |
| int sampleRateInHz, int channelCount, int audioFormat); |
| |
| |
| //--------------------------------------------------------- |
| // Utility methods |
| //------------------ |
| |
| private static void logd(String msg) { |
| Log.d(TAG, msg); |
| } |
| |
| private static void loge(String msg) { |
| Log.e(TAG, msg); |
| } |
| |
| } |