Returns the start time of a segment. @param segmentNum The segment number. @return The corresponding start time in microseconds.

* compute bitsperframe and mean_bits for a layer III frame **********************************************************************/

Returns whether the buffer currently holds a complete NAL unit of the target type.

Returns whether the player is currently playing an ad.

Called incrementally during a transfer. @param source The source performing the transfer. @param bytesTransferred The number of bytes transferred sin

Prepares a child source. <p>{@link #onChildSourceInfoRefreshed(Object, MediaSource, Timeline, Object)} will be called when the child source updates i

Processes an end of stream signal. @throws ExoPlaybackException If an error occurs processing the signal.

Reads from the enabled upstream source. If the upstream source has been read to the end then {@link C#RESULT_BUFFER_READ} is only returned if {@link #

Resolves the specified timeline period and position to a {@link MediaPeriodId} that should be played, returning an identifier for an ad group if one n

Rewinds the read position to the first sample in the queue.

Notifies the reader that a seek has occurred. <p> Following a call to this method, the data passed to the next invocation of {@link #consume(ParsableB

Attempts to set the playback parameters. Passing {@code null} sets the parameters to the default, {@link PlaybackParameters#DEFAULT}, which means ther

Returns the number of bits yet to be read.

Creates a composite {@link SequenceableLoader}. @param loaders The sub-loaders that make up the {@link SequenceableLoader} to be built. @return A com

Initializes the reader by providing outputs and ids for the tracks. @param extractorOutput The {@link ExtractorOutput} that receives the extracted da

Discards to the end of the queue. The read position is also advanced.

绘制四条分割线和四个角

Maps encoding byte from ID3v2 frame to a Charset. @param encodingByte The value of encoding byte from ID3v2 frame. @return Charset name.

Returns the cause of the error state.

Returns the index of the first sample in the specified track of the output that will originate from this chunk.

Returns the segment number of the first segment. @return The segment number of the first segment.

Returns the index in the track group of the track at a given index in the selection. @param index The index in the selection. @return The index of th

Returns the largest sample timestamp that has been queued since the last {@link #reset}. <p> Samples that were discarded by calling {@link #discardUps

Returns the index of the next timeline window to be played, which may depend on the current repeat mode and whether shuffle mode is enabled. Returns {

Returns a buffer containing processed output data between its position and limit. The buffer will always be a direct byte buffer with native byte orde

Returns the format of audio buffers output by the decoder. Will not be called until the first output buffer has been dequeued, so the decoder may use

{@link AudioTrack#getPlaybackHeadPosition()} returns a value intended to be interpreted as an unsigned 32 bit integer, which also wraps around periodi

Returns the index of the previous timeline window to be played, which may depend on the current repeat mode and whether shuffle mode is enabled. Retur

Returns the current absolute read index.

Returns the {@link C}{@code .TRACK_TYPE_ } constant that corresponds to a specified MIME type. {@link C#TRACK_TYPE_UNKNOWN} if the MIME type is not kn

Returns the upstream {@link Format} in which samples are being queued.

Returns whether {@link #data} is non-null.

Returns whether a sample is available to be read.

Returns whether seeking is supported. @return Whether seeking is supported.

Types of VBR. default = vbr_off = CBR */

Throws any pending error encountered while loading or refreshing source information. <p> Should not be called directly from application code.

Called when a transfer ends. @param source The source performing the transfer.

Called when a transfer starts. @param source The source performing the transfer. @param dataSpec Describes the data being transferred.

Parses the atom flags out of the additional integer component of a full atom.

Reads the next packet of the ogg stream. In case of an {@code IOException} the caller must make sure to pass the same instance of {@code ParsableByteA

Prepares the player to play the provided {@link MediaSource}. Equivalent to {@code prepare(mediaSource, true, true)}. <p> Note: {@link MediaSource} in

Attempts to read a discontinuity. <p>After this method has returned a value other than {@link C#TIME_UNSET}, all {@link SampleStream}s provided by th

Reads and returns a string of length {@code byteLength} from the {@link ExtractorInput}. @param input The {@link ExtractorInput} from which to read.

@see Handler#removeMessages(int)

* The spreading function. Values returned in units of energy */

Performs a track selection. <p>The call receives track {@code selections} for each renderer, {@code mayRetainStreamFlags} indicating whether the exis

Sets the length of the content.

Sets the value of a request header. The value will be used for subsequent connections established by the source. @param name The name of the header f

@see android.os.SystemClock#sleep(long)

Implements the pseudocode of page 98 of the IS */

Adds a listener for scrubbing events. @param listener The listener to add.