DecoderVideoRenderer

Artifact: androidx.media3:media3-exoplayer

Kotlin |Java

@UnstableApi
public abstract class DecoderVideoRenderer extends BaseRenderer

java.lang.Object
↳	androidx.media3.exoplayer.BaseRenderer
	↳	androidx.media3.exoplayer.video.DecoderVideoRenderer

Decodes and renders video using a Decoder.

This renderer accepts the following messages sent via createMessage on the playback thread:

Message with type MSG_SET_VIDEO_OUTPUT to set the output surface. The message payload should be the target Surface or VideoDecoderOutputBufferRenderer, or null. Other non-null payloads have the effect of clearing the output.
Message with type MSG_SET_VIDEO_FRAME_METADATA_LISTENER to set a listener for metadata associated with frames being rendered. The message payload should be the , or null.

Summary

Protected fields
`DecoderCounters`	`decoderCounters` Decoder event counters used for debugging purposes.

Protected constructors
`DecoderVideoRenderer( long allowedJoiningTimeMs, @Nullable Handler eventHandler, @Nullable VideoRendererEventListener eventListener, int maxDroppedFramesToNotify )`

Public methods
`void`	`enableMayRenderStartOfStream()` Enables this renderer to render the start of the stream even if the state is not `STATE_STARTED` yet.
`void`	`handleMessage( @Renderer.MessageType int messageType, @Nullable Object message )` Handles a message delivered to the target.
`boolean`	`isEnded()` Whether the renderer is ready for the `ExoPlayer` instance to transition to `STATE_ENDED`.
`boolean`	`isReady()` Whether the renderer is able to immediately render media from the current position.
`void`	`render(long positionUs, long elapsedRealtimeUs)` Incrementally renders the `SampleStream`.

Protected methods
`DecoderReuseEvaluation`	`canReuseDecoder(String decoderName, Format oldFormat, Format newFormat)` Evaluates whether the existing decoder can be reused for a new `Format`.
`abstract Decoder<DecoderInputBuffer, VideoDecoderOutputBuffer, DecoderException>`	`createDecoder(Format format, @Nullable CryptoConfig cryptoConfig)` Creates a decoder for the given format.
`void`	`dropOutputBuffer(VideoDecoderOutputBuffer outputBuffer)` Drops the specified output buffer and releases it.
`void`	`@CallSuper flushDecoder()` Flushes the decoder.
`boolean`	`maybeDropBuffersToKeyframe(long positionUs)` Drops frames from the current output buffer to the next keyframe at or before the playback position.
`void`	`onDisabled()` Called when the renderer is disabled.
`void`	`onEnabled(boolean joining, boolean mayRenderStartOfStream)` Called when the renderer is enabled.
`void`	`@CallSuper onInputFormatChanged(FormatHolder formatHolder)` Called when a new format is read from the upstream source.
`void`	`onPositionReset(long positionUs, boolean joining)` Called when the position is reset.
`void`	`@CallSuper onProcessedOutputBuffer(long presentationTimeUs)` Called when an output buffer is successfully processed.
`void`	`onQueueInputBuffer(DecoderInputBuffer buffer)` Called immediately before an input buffer is queued into the decoder.
`void`	`onStarted()` Called when the renderer is started.
`void`	`onStopped()` Called when the renderer is stopped.
`void`	`onStreamChanged( Format[] formats, long startPositionUs, long offsetUs, MediaSource.MediaPeriodId mediaPeriodId )` Called when the renderer's stream has changed.
`void`	`@CallSuper releaseDecoder()` Releases the decoder.
`void`	`renderOutputBuffer( VideoDecoderOutputBuffer outputBuffer, long presentationTimeUs, Format outputFormat )` Renders the specified output buffer.
`abstract void`	`renderOutputBufferToSurface( VideoDecoderOutputBuffer outputBuffer, Surface surface )` Renders the specified output buffer to the passed surface.
`abstract void`	`setDecoderOutputMode(@C.VideoOutputMode int outputMode)` Sets output mode of the decoder.
`final void`	`setOutput(@Nullable Object output)` Sets the video output.
`boolean`	`shouldDropBuffersToKeyframe(long earlyUs, long elapsedRealtimeUs)` Returns whether to drop all buffers from the buffer being processed to the keyframe at or after the current playback position, if possible.
`boolean`	`shouldDropOutputBuffer(long earlyUs, long elapsedRealtimeUs)` Returns whether the buffer being processed should be dropped.
`boolean`	`shouldForceRenderOutputBuffer( long earlyUs, long elapsedSinceLastRenderUs )` Returns whether to force rendering an output buffer.
`void`	`skipOutputBuffer(VideoDecoderOutputBuffer outputBuffer)` Skips the specified output buffer and releases it.
`void`	`updateDroppedBufferCounters( int droppedInputBufferCount, int droppedDecoderBufferCount )` Updates local counters and `decoderCounters` to reflect that buffers were dropped.

Inherited Constants

From androidx.media3.exoplayer.Renderer

`static final long`	`DEFAULT_DURATION_TO_PROGRESS_US = 10000` Default minimum duration that the playback clock must advance before `render` can make progress.
`static final long`	`DEFAULT_IDLE_DURATION_TO_PROGRESS_US = 1000000` Default duration to progress reported if the renderer does not need calls to `render` to progress, if it's in `STATE_ENABLED` and already `ready` or `ended`.
`static final int`	`MSG_CUSTOM_BASE = 10000` Applications or extensions may define custom `MSG_*` constants that can be passed to renderers.
`static final int`	`MSG_SET_AUDIO_ATTRIBUTES = 3` A type of a message that can be passed to an audio renderer via `createMessage`.
`static final int`	`MSG_SET_AUDIO_SESSION_ID = 10` The type of a message that can be passed to audio and video renderers via `createMessage`.
`static final int`	`MSG_SET_AUX_EFFECT_INFO = 6` A type of a message that can be passed to an audio renderer via `createMessage`.
`static final int`	`MSG_SET_CAMERA_MOTION_LISTENER = 8` The type of a message that can be passed to a camera motion renderer via `createMessage`.
`static final int`	`MSG_SET_CHANGE_FRAME_RATE_STRATEGY = 5` The type of a message that can be passed to a video renderer via `createMessage`.
`static final int`	`MSG_SET_IMAGE_OUTPUT = 15` The type of message that can be passed to an image renderer to set a desired image output.
`static final int`	`MSG_SET_PREFERRED_AUDIO_DEVICE = 12` The type of a message that can be passed to audio renderers via `createMessage`.
`static final int`	`MSG_SET_PRIORITY = 16` The type of message that can be passed to a renderer to set its priority.
`static final int`	`MSG_SET_SCALING_MODE = 4` The type of a message that can be passed to a `MediaCodec`-based video renderer via `createMessage`.
`static final int`	`MSG_SET_SCRUBBING_MODE = 18` The type of message that can be passed to a renderer to direct it to enable or disable scrubbing mode.
`static final int`	`MSG_SET_SKIP_SILENCE_ENABLED = 9` The type of a message that can be passed to an audio renderer via `createMessage`.
`static final int`	`MSG_SET_VIDEO_EFFECTS = 13` The type of a message that can be passed to a video renderer.
`static final int`	`MSG_SET_VIDEO_FRAME_METADATA_LISTENER = 7` The type of a message that can be passed to a video renderer via `createMessage`.
`static final int`	`MSG_SET_VIDEO_OUTPUT = 1` The type of a message that can be passed to a video renderer via `createMessage`.
`static final int`	`MSG_SET_VIDEO_OUTPUT_RESOLUTION = 14` The type of a message that can be passed to a video renderer to set the desired output resolution.
`static final int`	`MSG_SET_VOLUME = 2` A type of a message that can be passed to an audio renderer via `createMessage`.
`static final int`	`MSG_SET_WAKEUP_LISTENER = 11` The type of a message that can be passed to a `Renderer` via `createMessage`, to inform the renderer that it can schedule waking up another component.
`static final int`	`MSG_TRANSFER_RESOURCES = 17` The type of message that can be passed to a renderer to direct it to transfer relevant resources to another renderer.
`static final int`	`STATE_DISABLED = 0` The renderer is disabled.
`static final int`	`STATE_ENABLED = 1` The renderer is enabled but not started.
`static final int`	`STATE_STARTED = 2` The renderer is started.

From androidx.media3.exoplayer.RendererCapabilities

`static final int`	`ADAPTIVE_NOT_SEAMLESS = 8` The `Renderer` can adapt between formats, but may suffer a brief discontinuity (~50-100ms) when adaptation occurs.
`static final int`	`ADAPTIVE_NOT_SUPPORTED = 0` The `Renderer` does not support adaptation between formats.
`static final int`	`ADAPTIVE_SEAMLESS = 16` The `Renderer` can seamlessly adapt between formats.
`static final int`	`ADAPTIVE_SUPPORT_MASK = 24` A mask to apply to `Capabilities` to obtain the `AdaptiveSupport` only.
`static final int`	`AUDIO_OFFLOAD_GAPLESS_SUPPORTED = 1024` The renderer supports audio offload and gapless transitions with this format.
`static final int`	`AUDIO_OFFLOAD_NOT_SUPPORTED = 0` Audio offload is not supported with this format.
`static final int`	`AUDIO_OFFLOAD_SPEED_CHANGE_SUPPORTED = 2048` The renderer supports audio offload and speed changes with this format.
`static final int`	`AUDIO_OFFLOAD_SUPPORTED = 512` The renderer supports audio offload with this format.
`static final int`	`AUDIO_OFFLOAD_SUPPORT_MASK = 3584` A mask to apply to `Capabilities` to obtain `AudioOffloadSupport` only.
`static final int`	`DECODER_SUPPORT_FALLBACK = 0` The format exceeds the primary decoder's capabilities but is supported by fallback decoder
`static final int`	`DECODER_SUPPORT_FALLBACK_MIMETYPE = 256` The format's MIME type is unsupported and the renderer may use a decoder for a fallback MIME type.
`static final int`	`DECODER_SUPPORT_MASK = 384` A mask to apply to `Capabilities` to obtain `DecoderSupport` only.
`static final int`	`DECODER_SUPPORT_PRIMARY = 128` The renderer is able to use the primary decoder for the format's MIME type.
`static final int`	`FORMAT_SUPPORT_MASK = 7` A mask to apply to `Capabilities` to obtain the `C.FormatSupport` only.
`static final int`	`HARDWARE_ACCELERATION_NOT_SUPPORTED = 0` The renderer is not able to use hardware acceleration.
`static final int`	`HARDWARE_ACCELERATION_SUPPORTED = 64` The renderer is able to use hardware acceleration.
`static final int`	`HARDWARE_ACCELERATION_SUPPORT_MASK = 64` A mask to apply to `Capabilities` to obtain `HardwareAccelerationSupport` only.
`static final int`	`TUNNELING_NOT_SUPPORTED = 0` The `Renderer` does not support tunneled output.
`static final int`	`TUNNELING_SUPPORTED = 32` The `Renderer` supports tunneled output.
`static final int`	`TUNNELING_SUPPORT_MASK = 32` A mask to apply to `Capabilities` to obtain `TunnelingSupport` only.

Inherited fields

From androidx.media3.exoplayer.BaseRenderer

`@MonotonicNonNull Clock`	`@MonotonicNonNull clock`
`@Nullable RendererConfiguration`	`configuration`
`final FormatHolder`	`formatHolder`
`int`	`index`
`long`	`lastResetPositionUs`
`@Nullable MediaSource.MediaPeriodId`	`mediaPeriodId`
`@MonotonicNonNull PlayerId`	`@MonotonicNonNull playerId`
`long`	`readingPositionUs`
`int`	`state`
`@Nullable SampleStream`	`stream`
`@Nullable Format[]`	`streamFormats`
`long`	`streamOffsetUs`
`Timeline`	`timeline`
`final int`	`@C.TrackType trackType`

Inherited methods

From androidx.media3.exoplayer.BaseRenderer

`final void`	`clearListener()` Clears the `Listener`.
`final ExoPlaybackException`	`createRendererException( Throwable cause, @Nullable Format format, @PlaybackException.ErrorCode int errorCode )` Creates an `ExoPlaybackException` of type `TYPE_RENDERER` for this renderer.
`final ExoPlaybackException`	`createRendererException( Throwable cause, @Nullable Format format, boolean isRecoverable, @PlaybackException.ErrorCode int errorCode )` Creates an `ExoPlaybackException` of type `TYPE_RENDERER` for this renderer.
`final void`	`disable()` Disable the renderer, transitioning it to the `STATE_DISABLED` state.
`final void`	`enable( RendererConfiguration configuration, Format[] formats, SampleStream stream, long positionUs, boolean joining, boolean mayRenderStartOfStream, long startPositionUs, long offsetUs, MediaSource.MediaPeriodId mediaPeriodId )` Enables the renderer to consume from the specified `SampleStream`.
`final RendererCapabilities`	`getCapabilities()` Returns the capabilities of the renderer.
`final Clock`	`getClock()` Returns the `Clock`.
`final RendererConfiguration`	`getConfiguration()` Returns the configuration set when the renderer was most recently enabled.
`final FormatHolder`	`getFormatHolder()` Returns a clear `FormatHolder`.
`final int`	`getIndex()` Returns the index of the renderer within the player.
`final long`	`getLastResetPositionUs()` Returns the position passed to the most recent call to `enable` or resetPosition.
`@Nullable MediaClock`	`getMediaClock()` If the renderer advances its own playback position then this method returns a corresponding `MediaClock`.
`final @Nullable MediaSource.MediaPeriodId`	`getMediaPeriodId()` The `MediaSource.MediaPeriodId` of the `MediaPeriod` producing the `stream`, or `null` if the renderer is disabled.
`final PlayerId`	`getPlayerId()` Returns the `PlayerId` of the player using this renderer.
`final long`	`getReadingPositionUs()` Returns the renderer time up to which the renderer has read samples, in microseconds, or `TIME_END_OF_SOURCE` if the renderer has read the current `SampleStream` to the end.
`final int`	`getState()` Returns the current state of the renderer.
`final @Nullable SampleStream`	`getStream()` Returns the `SampleStream` being consumed, or null if the renderer is disabled.
`final Format[]`	`getStreamFormats()` Returns the formats of the currently enabled stream.
`final long`	`getStreamOffsetUs()` Returns the offset added to timestamps of buffers read from the `SampleStream`.
`final Timeline`	`getTimeline()` Returns the current `Timeline` containing the rendered stream.
`final int`	`@C.TrackType getTrackType()` Returns the track type that the renderer handles.
`final boolean`	`hasReadStreamToEnd()` Returns whether the renderer has read the current `SampleStream` to the end.
`final void`	`init(int index, PlayerId playerId, Clock clock)` Initializes the renderer for playback with a player.
`final boolean`	`isCurrentStreamFinal()` Returns whether the current `SampleStream` will be the final one supplied before the renderer is next disabled or reset.
`final boolean`	`isSourceReady()` Returns whether the upstream source is ready.
`final void`	`maybeThrowStreamError()` Throws an error that's preventing the renderer from reading from its `SampleStream`.
`void`	`onInit()` Called when the renderer is initialized.
`void`	`onRelease()` Called when the renderer is released.
`final void`	`onRendererCapabilitiesChanged()` Called when the renderer capabilities are changed.
`void`	`onReset()` Called when the renderer is reset.
`void`	`onTimelineChanged(Timeline timeline)` Called when a new timeline is `set`.
`final int`	`@SampleStream.ReadDataResult readSource( FormatHolder formatHolder, DecoderInputBuffer buffer, @SampleStream.ReadFlags int readFlags )` Reads from the enabled upstream source.
`final void`	`release()` Releases the renderer.
`final void`	`replaceStream( Format[] formats, SampleStream stream, long startPositionUs, long offsetUs, MediaSource.MediaPeriodId mediaPeriodId )` Replaces the `SampleStream` from which samples will be consumed.
`final void`	`reset()` Forces the renderer to give u

DecoderVideoRenderer

Summary

Protected fields

Protected constructors

Public methods

Protected methods

Inherited Constants

Inherited fields

Inherited methods