am a0b06d8c: am 20a0edf1: Merge "Minor cleanup of comments and code" into mnc-dev (1ec5d55d) · Commits · e / os / android_frameworks_base

media/java/android/media/AudioTrack.java

+15 −12

Original line number	Diff line number	Diff line
		@@ -98,6 +98,7 @@ public class AudioTrack
		/** Maximum value for sample rate */
		private static final int SAMPLE_RATE_HZ_MAX = 192000;

		// FCC_8
		/** Maximum value for AudioTrack channel count */
		private static final int CHANNEL_COUNT_MAX = 8;

		@@ -206,14 +207,16 @@ public class AudioTrack
		//--------------------
		/**
		* Indicates the state of the AudioTrack instance.
		* One of STATE_UNINITIALIZED, STATE_INITIALIZED, or STATE_NO_STATIC_DATA.
		*/
		private int mState = STATE_UNINITIALIZED;
		/**
		* Indicates the play state of the AudioTrack instance.
		* One of PLAYSTATE_STOPPED, PLAYSTATE_PAUSED, or PLAYSTATE_PLAYING.
		*/
		private int mPlayState = PLAYSTATE_STOPPED;
		/**
		* Lock to make sure mPlayState updates are reflecting the actual state of the object.
		* Lock to ensure mPlayState updates reflect the actual state of the object.
		*/
		private final Object mPlayStateLock = new Object();
		/**
		@@ -234,9 +237,9 @@ public class AudioTrack
		/**
		* The audio data source sampling rate in Hz.
		*/
		private int mSampleRate; // initialized by all constructors
		private int mSampleRate; // initialized by all constructors via audioParamCheck()
		/**
		* The number of audio output channels (1 is mono, 2 is stereo).
		* The number of audio output channels (1 is mono, 2 is stereo, etc.).
		*/
		private int mChannelCount = 1;
		/**
		@@ -255,7 +258,7 @@ public class AudioTrack

		private final AudioAttributes mAttributes;
		/**
		* The way audio is consumed by the audio sink, streaming or static.
		* The way audio is consumed by the audio sink, one of MODE_STATIC or MODE_STREAM.
		*/
		private int mDataLoadMode = MODE_STREAM;
		/**
		@@ -265,7 +268,7 @@ public class AudioTrack
		*/
		private int mChannelConfiguration = AudioFormat.CHANNEL_OUT_MONO;
		/**
		* The current audio channel index configuration (if specified).
		* The channel index mask if specified, otherwise 0.
		*/
		private int mChannelIndexMask = 0;
		/**
		@@ -274,7 +277,7 @@ public class AudioTrack
		* @see AudioFormat#ENCODING_PCM_16BIT
		* @see AudioFormat#ENCODING_PCM_FLOAT
		*/
		private int mAudioFormat = AudioFormat.ENCODING_PCM_16BIT;
		private int mAudioFormat; // initialized by all constructors via audioParamCheck()
		/**
		* Audio session ID
		*/
		@@ -475,7 +478,7 @@ public class AudioTrack
		IBinder b = ServiceManager.getService(Context.APP_OPS_SERVICE);
		mAppOps = IAppOpsService.Stub.asInterface(b);

		mAttributes = (new AudioAttributes.Builder(attributes).build());
		mAttributes = new AudioAttributes.Builder(attributes).build();

		if (sessionId < 0) {
		throw new IllegalArgumentException("Invalid audio session ID: "+sessionId);
		@@ -683,7 +686,8 @@ public class AudioTrack
		}
		}

		// mask of all the channels supported by this implementation
		// mask of all the positional channels supported, however the allowed combinations
		// are further restricted by the matching left/right rule and CHANNEL_COUNT_MAX
		private static final int SUPPORTED_OUT_CHANNELS =
		AudioFormat.CHANNEL_OUT_FRONT_LEFT \|
		AudioFormat.CHANNEL_OUT_FRONT_RIGHT \|
		@@ -834,8 +838,7 @@ public class AudioTrack
		// To update when supporting compressed formats
		int frameSizeInBytes;
		if (AudioFormat.isEncodingLinearPcm(mAudioFormat)) {
		frameSizeInBytes = mChannelCount
		* (AudioFormat.getBytesPerSample(mAudioFormat));
		frameSizeInBytes = mChannelCount * AudioFormat.getBytesPerSample(mAudioFormat);
		} else {
		frameSizeInBytes = 1;
		}
		@@ -941,7 +944,7 @@ public class AudioTrack
		* <p> For example, refer to {@link AudioFormat#CHANNEL_OUT_MONO},
		* {@link AudioFormat#CHANNEL_OUT_STEREO}, {@link AudioFormat#CHANNEL_OUT_5POINT1}.
		* This method may return {@link AudioFormat#CHANNEL_INVALID} if
		* a channel index mask is used. Consider
		* a channel index mask was used. Consider
		* {@link #getFormat()} instead, to obtain an {@link AudioFormat},
		* which contains both the channel position mask and the channel index mask.
		*/
		@@ -978,9 +981,9 @@ public class AudioTrack
		* Returns the state of the AudioTrack instance. This is useful after the
		* AudioTrack instance has been created to check if it was initialized
		* properly. This ensures that the appropriate resources have been acquired.
		* @see #STATE_UNINITIALIZED
		* @see #STATE_INITIALIZED
		* @see #STATE_NO_STATIC_DATA
		* @see #STATE_UNINITIALIZED
		*/
		public int getState() {
		return mState;