Cross Reference: /frameworks/base/media/java/android/media/AudioTrack.java

Lines Matching defs:AudioTrack
31  * The AudioTrack class manages and plays a single audio resource for Java applications.
33  * achieved by "pushing" the data to the AudioTrack object using one of the
36  * <p>An AudioTrack instance can operate under two modes: static or streaming.<br>
37  * In Streaming mode, the application writes a continuous stream of data to the AudioTrack, using
54  * <p>Upon creation, an AudioTrack object initializes its associated audio buffer.
55  * The size of this buffer, specified during the construction, determines how long an AudioTrack
57  * For an AudioTrack using the static mode, this size is the maximum size of the sound that can
62 public class AudioTrack
72     /** indicates AudioTrack state is stopped */
74     /** indicates AudioTrack state is paused */
76     /** indicates AudioTrack state is playing */
92      * State of an AudioTrack that was not successfully initialized upon creation.
96      * State of an AudioTrack that is ready to be used.
100      * State of a successfully initialized AudioTrack that uses static data,
131     // to keep in sync with frameworks/base/include/media/AudioTrack.h
141     private final static String TAG = "AudioTrack-Java";
148      * Indicates the state of the AudioTrack instance.
152      * Indicates the play state of the AudioTrack instance.
160      * The listener the AudioTrack notifies when the playback position reaches a marker
178      * Looper associated with the thread that creates the AudioTrack instance.
226      * Accessed by native methods: provides access to C++ AudioTrack object.
232      * the native AudioTrack object, but not stored in it).
255      *   from for playback. If using the AudioTrack in streaming mode, you can write data into
256      *   this buffer in smaller chunks than this size. If using the AudioTrack in static mode,
259      *   for the successful creation of an AudioTrack instance in streaming mode. Using values
264     public AudioTrack(int streamType, int sampleRateInHz, int channelConfig, int audioFormat,
272      * Class constructor with audio session. Use this constructor when the AudioTrack must be
274      * associate audio effects to a particular instance of AudioTrack: if an audio session ID
277      * When an AudioTrack is created without specifying a session, it will create its own session
279      * If a non-zero session ID is provided, this AudioTrack will share effects attached to this
295      *   from for playback. If using the AudioTrack in streaming mode, you can write data into
296      *   this buffer in smaller chunks than this size. If using the AudioTrack in static mode,
299      *   for the successful creation of an AudioTrack instance in streaming mode. Using values
302      * @param sessionId Id of audio session the AudioTrack must be attached to
305     public AudioTrack(int streamType, int sampleRateInHz, int channelConfig, int audioFormat,
310         // remember which looper is associated with the AudioTrack instantiation
326         int initResult = native_setup(new WeakReference<AudioTrack>(this),
330             loge("Error code "+initResult+" when initializing AudioTrack.");
444      * @return false if the AudioTrack can't be used with such a mask
493      * Releases the native AudioTrack resources.
496         // even though native_release() stops the native AudioTrack, we need to stop
497         // AudioTrack subclasses too.
521         return AudioTrack.VOLUME_MIN;
530         return AudioTrack.VOLUME_MAX;
556      * Returns the type of audio stream this AudioTrack is configured for.
584      * Returns the state of the AudioTrack instance. This is useful after the
585      * AudioTrack instance has been created to check if it was initialized
597      * Returns the playback state of the AudioTrack instance.
644      * Returns the minimum buffer size required for the successful creation of an AudioTrack
675                 return AudioTrack.ERROR_BAD_VALUE;
684             return AudioTrack.ERROR_BAD_VALUE;
690             return AudioTrack.ERROR_BAD_VALUE;
696             return AudioTrack.ERROR;
706      * @return the ID of the audio session this AudioTrack belongs to.
716      * Sets the listener the AudioTrack notifies when a previously set marker is reached or
718      * Notifications will be received in the same thread as the one in which the AudioTrack
727      * Sets the listener the AudioTrack notifies when a previously set marker is reached or
729      * Use this method to receive AudioTrack events in the Handler associated with another
730      * thread than the one in which you created the AudioTrack instance.
748      * Sets the specified left/right output volume values on the AudioTrack. Values are clamped
863      * Sets the initialization state of the instance. To be used in an AudioTrack subclass
865      * @param state the state of the AudioTrack instance
876      * Starts playing an AudioTrack.
883             throw(new IllegalStateException("play() called on uninitialized AudioTrack."));
903             throw(new IllegalStateException("stop() called on uninitialized AudioTrack."));
923             throw(new IllegalStateException("pause() called on uninitialized AudioTrack."));
1025      * layer. This call is only valid with AudioTrack instances that don't use the streaming
1100      * an AudioTrack has reached a notification marker or has increased by a certain period.
1107         void onMarkerReached(AudioTrack track);
1113         void onPeriodicNotification(AudioTrack track);
1125         private final AudioTrack mAudioTrack;
1128         NativeEventHandlerDelegate(AudioTrack track, Handler handler) {
1135                 // no given handler, use the looper the AudioTrack was created in
1164                             Log.e(TAG, "[ android.media.AudioTrack.NativeEventHandler ] " +
1188         AudioTrack track = (AudioTrack)((WeakReference)audiotrack_ref).get();
1262         Log.d(TAG, "[ android.media.AudioTrack ] " + msg);
1266         Log.e(TAG, "[ android.media.AudioTrack ] " + msg);