public abstract class SimpleDecoderAudioRenderer extends BaseRenderer implements MediaClock
SimpleDecoder
.STATE_DISABLED, STATE_ENABLED, STATE_STARTED
ADAPTIVE_NOT_SEAMLESS, ADAPTIVE_NOT_SUPPORTED, ADAPTIVE_SEAMLESS, ADAPTIVE_SUPPORT_MASK, FORMAT_EXCEEDS_CAPABILITIES, FORMAT_HANDLED, FORMAT_SUPPORT_MASK, FORMAT_UNSUPPORTED_SUBTYPE, FORMAT_UNSUPPORTED_TYPE
Constructor and Description |
---|
SimpleDecoderAudioRenderer() |
SimpleDecoderAudioRenderer(Handler eventHandler,
AudioRendererEventListener eventListener) |
SimpleDecoderAudioRenderer(Handler eventHandler,
AudioRendererEventListener eventListener,
AudioCapabilities audioCapabilities,
int streamType) |
Modifier and Type | Method and Description |
---|---|
protected abstract SimpleDecoder<DecoderInputBuffer,? extends SimpleOutputBuffer,? extends AudioDecoderException> |
createDecoder(Format format)
Creates a decoder for the given format.
|
MediaClock |
getMediaClock()
If the renderer advances its own playback position then this method returns a corresponding
MediaClock . |
protected Format |
getOutputFormat()
Returns the format of audio buffers output by the decoder.
|
long |
getPositionUs()
Returns the current media position in microseconds.
|
void |
handleMessage(int messageType,
Object message)
Handles a message delivered to the component.
|
boolean |
isEnded()
Whether the renderer is ready for the
ExoPlayer instance to transition to
ExoPlayer.STATE_ENDED . |
boolean |
isReady()
Whether the renderer is able to immediately render media from the current position.
|
protected void |
onAudioSessionId(int audioSessionId)
Called when the audio session id becomes known.
|
protected void |
onDisabled()
Called when the renderer is disabled.
|
protected void |
onEnabled(boolean joining)
Called when the renderer is enabled.
|
protected void |
onPositionReset(long positionUs,
boolean joining)
Called when the position is reset.
|
protected void |
onStarted()
Called when the renderer is started.
|
protected void |
onStopped()
Called when the renderer is stopped.
|
void |
render(long positionUs,
long elapsedRealtimeUs)
Incrementally renders the
SampleStream . |
disable, enable, getCapabilities, getIndex, getState, getStream, getTrackType, hasReadStreamToEnd, isSourceReady, maybeThrowStreamError, onStreamChanged, readSource, replaceStream, resetPosition, setCurrentStreamIsFinal, setIndex, skipToKeyframeBefore, start, stop, supportsMixedMimeTypeAdaptation
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
supportsFormat
public SimpleDecoderAudioRenderer()
public SimpleDecoderAudioRenderer(Handler eventHandler, AudioRendererEventListener eventListener)
eventHandler
- A handler to use when delivering events to eventListener
. May be
null if delivery of events is not required.eventListener
- A listener of events. May be null if delivery of events is not required.public SimpleDecoderAudioRenderer(Handler eventHandler, AudioRendererEventListener eventListener, AudioCapabilities audioCapabilities, int streamType)
eventHandler
- A handler to use when delivering events to eventListener
. May be
null if delivery of events is not required.eventListener
- A listener of events. May be null if delivery of events is not required.audioCapabilities
- The audio capabilities for playback on this device. May be null if the
default capabilities (no encoded audio passthrough support) should be assumed.streamType
- The type of audio stream for the AudioTrack
.public MediaClock getMediaClock()
Renderer
MediaClock
. If provided, the player will use the returned MediaClock
as its
source of time during playback. A player may have at most one renderer that returns a
MediaClock
from this method.getMediaClock
in interface Renderer
getMediaClock
in class BaseRenderer
MediaClock
tracking the playback position of the renderer, or null.public void render(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException
Renderer
SampleStream
.
If the renderer is in the Renderer.STATE_ENABLED
state then each call to this method will do
work toward being ready to render the SampleStream
when the renderer is started. It may
also render the very start of the media, for example the first frame of a video stream. If the
renderer is in the Renderer.STATE_STARTED
state then calls to this method will render the
SampleStream
in sync with the specified media positions.
This method should return quickly, and should not block if the renderer is unable to make useful progress.
This method may be called when the renderer is in the following states:
Renderer.STATE_ENABLED
, Renderer.STATE_STARTED
.
render
in interface Renderer
positionUs
- The current media time in microseconds, measured at the start of the
current iteration of the rendering loop.elapsedRealtimeUs
- SystemClock.elapsedRealtime()
in microseconds,
measured at the start of the current iteration of the rendering loop.ExoPlaybackException
- If an error occurs.protected abstract SimpleDecoder<DecoderInputBuffer,? extends SimpleOutputBuffer,? extends AudioDecoderException> createDecoder(Format format) throws AudioDecoderException
format
- The format for which a decoder is required.AudioDecoderException
- If an error occurred creating a suitable decoder.protected Format getOutputFormat()
The default implementation returns a 16-bit PCM format with the same channel count and sample rate as the input.
public boolean isEnded()
Renderer
ExoPlayer
instance to transition to
ExoPlayer.STATE_ENDED
. The player will make this transition as soon as true
is
returned by all of its Renderer
s.
This method may be called when the renderer is in the following states:
Renderer.STATE_ENABLED
, Renderer.STATE_STARTED
.
public boolean isReady()
Renderer
If the renderer is in the Renderer.STATE_STARTED
state then returning true indicates that the
renderer has everything that it needs to continue playback. Returning false indicates that
the player should pause until the renderer is ready.
If the renderer is in the Renderer.STATE_ENABLED
state then returning true indicates that the
renderer is ready for playback to be started. Returning false indicates that it is not.
This method may be called when the renderer is in the following states:
Renderer.STATE_ENABLED
, Renderer.STATE_STARTED
.
public long getPositionUs()
MediaClock
getPositionUs
in interface MediaClock
protected void onAudioSessionId(int audioSessionId)
The default implementation is a no-op.
audioSessionId
- The audio session id.protected void onEnabled(boolean joining) throws ExoPlaybackException
BaseRenderer
The default implementation is a no-op.
onEnabled
in class BaseRenderer
joining
- Whether this renderer is being enabled to join an ongoing playback.ExoPlaybackException
- If an error occurs.protected void onPositionReset(long positionUs, boolean joining)
BaseRenderer
BaseRenderer.onStreamChanged(Format[])
has been called, and also when a position discontinuity
is encountered.
After a position reset, the renderer's SampleStream
is guaranteed to provide samples
starting from a key frame.
The default implementation is a no-op.
onPositionReset
in class BaseRenderer
positionUs
- The new playback position in microseconds.joining
- Whether this renderer is being enabled to join an ongoing playback.protected void onStarted()
BaseRenderer
The default implementation is a no-op.
onStarted
in class BaseRenderer
protected void onStopped()
BaseRenderer
The default implementation is a no-op.
onStopped
in class BaseRenderer
protected void onDisabled()
BaseRenderer
The default implementation is a no-op.
onDisabled
in class BaseRenderer
public void handleMessage(int messageType, Object message) throws ExoPlaybackException
ExoPlayer.ExoPlayerComponent
handleMessage
in interface ExoPlayer.ExoPlayerComponent
handleMessage
in class BaseRenderer
messageType
- The message type.message
- The message.ExoPlaybackException
- If an error occurred whilst handling the message.