MediaCodecAdapter

abstract int dequeueInputBufferIndex()

Returns the next available input buffer index from the underlying MediaCodec or INFO_TRY_AGAIN_LATER if no such buffer exists.

abstract int dequeueOutputBufferIndex(MediaCodec.BufferInfo bufferInfo)

Returns the next available output buffer index from the underlying MediaCodec. If the next available output is a MediaFormat change, it will return INFO_OUTPUT_FORMAT_CHANGED and you should call getOutputFormat to get the format. If there is no available output, this method will return INFO_TRY_AGAIN_LATER.

@RequiresApi(value = 35)
abstract void detachOutputSurface()

Detaches the current output surface.

abstract void flush()

Flushes the adapter and the underlying MediaCodec.

abstract @Nullable ByteBuffer getInputBuffer(int index)

Returns a writable ByteBuffer object for a dequeued input buffer index.

@RequiresApi(value = 26)
abstract PersistableBundle getMetrics()

Returns metrics data about the current codec instance.

abstract @Nullable ByteBuffer getOutputBuffer(int index)

Returns a read-only ByteBuffer for a dequeued output buffer index.

abstract MediaFormat getOutputFormat()

Gets the MediaFormat that was output from the MediaCodec.

Call this method if a previous call to dequeueOutputBufferIndex returned INFO_OUTPUT_FORMAT_CHANGED.

abstract boolean needsReconfiguration()

Whether the adapter needs to be reconfigured before it is used.

abstract void queueInputBuffer(
    int index,
    int offset,
    int size,
    long presentationTimeUs,
    int flags
)

Submit an input buffer for decoding.

The index must be an input buffer index that has been obtained from a previous call to dequeueInputBufferIndex.

abstract void queueSecureInputBuffer(
    int index,
    int offset,
    CryptoInfo info,
    long presentationTimeUs,
    int flags
)

Submit an input buffer that is potentially encrypted for decoding.

The index must be an input buffer index that has been obtained from a previous call to dequeueInputBufferIndex.

This method behaves like queueSecureInputBuffer, with the difference that info is of type CryptoInfo and not android.media.MediaCodec.CryptoInfo.

default boolean registerOnBufferAvailableListener(
    MediaCodecAdapter.OnBufferAvailableListener listener
)

Registers a listener that will be called when an input or output buffer becomes available.

Returns false if listener was not successfully registered for callbacks.

abstract void release()

Releases the adapter and the underlying MediaCodec.

abstract void releaseOutputBuffer(int index, boolean render)

Returns the buffer to the MediaCodec. If the MediaCodec was configured with an output surface, setting render to true will first send the buffer to the output surface. The surface will release the buffer back to the codec once it is no longer used/displayed.

abstract void releaseOutputBuffer(int index, long renderTimeStampNs)

Updates the output buffer's surface timestamp and sends it to the MediaCodec to render it on the output surface. If the MediaCodec is not configured with an output surface, this call will simply return the buffer to the MediaCodec.

abstract void setOnFrameRenderedListener(
    MediaCodecAdapter.OnFrameRenderedListener listener,
    Handler handler
)

Registers a callback to be invoked when an output frame is rendered on the output surface.

abstract void setOutputSurface(Surface surface)

Dynamically sets the output surface of a MediaCodec.

abstract void setParameters(Bundle params)

Communicate additional parameter changes to the MediaCodec instance.

abstract void setVideoScalingMode(@C.VideoScalingMode int scalingMode)

Specifies the scaling mode to use, if a surface was specified when the codec was created.

@RequiresApi(value = 31)
abstract void subscribeToVendorParameters(List<String> names)

Subscribe to vendor parameters, so that these parameters will be present in getOutputFormat and changes to these parameters generate output format change event.

@RequiresApi(value = 31)
abstract void unsubscribeFromVendorParameters(List<String> names)

Unsubscribe from vendor parameters, so that these parameters will not be present in getOutputFormat and changes to these parameters no longer generate output format change event.

default void useInputBuffer(Runnable runnable)

Uses an acquired input buffer (e.g. to write data to it).

This can be used for error handling, e.g. to guarantee no operation can invalidate the buffer while it's being used.