Merge "Update documentation of MediaCodec regarding partial frame." into oc-dev

 <h4>Compressed Buffers</h4>

 <p>

 Input buffers (for decoders) and output buffers (for encoders) contain compressed data according

 to the {@linkplain MediaFormat#KEY_MIME format's type}. For video types this is a single

 to the {@linkplain MediaFormat#KEY_MIME format's type}. For video types this is normally a single

 compressed video frame. For audio data this is normally a single access unit (an encoded audio

 segment typically containing a few milliseconds of audio as dictated by the format type), but

 this requirement is slightly relaxed in that a buffer may contain multiple encoded access units

 of audio. In either case, buffers do not start or end on arbitrary byte boundaries, but rather on

 frame/access unit boundaries.

 frame/access unit boundaries unless they are flagged with {@link #BUFFER_FLAG_PARTIAL_FRAME}.

 <h4>Raw Audio Buffers</h4>

 <p>

import java.util.List;

/**

 * MediaSync class can be used to synchronously playback audio and video streams.

 * MediaSync class can be used to synchronously play audio and video streams.

 * It can be used to play audio-only or video-only stream, too.

 *

 * <p>MediaSync is generally used like this: