DefaultCodec

public static final int DEFAULT_PCM_ENCODING = 2

public final Format configurationFormat

public final @Nullable Surface inputSurface

public final int maxPendingFrameCount

public @Nullable ByteBuffer outputBuffer

public final MediaCodec.BufferInfo outputBufferInfo

@MonotonicNonNull
public @MonotonicNonNull Format outputFormat

public DefaultCodec(
    Context context,
    Format configurationFormat,
    MediaFormat configurationMediaFormat,
    String mediaCodecName,
    boolean isDecoder,
    @Nullable Surface outputSurface
)

Creates a DefaultCodec.

public Format getConfigurationFormat()

Returns the Format used for configuring the Codec.

The configuration Format is the input Format used by the or output Format used by the EncoderFactory for selecting and configuring the underlying decoder or encoder.

public Surface getInputSurface()

Returns the input Surface of an underlying video encoder.

This method must only be called on video encoders because audio/video decoders and audio encoders don't use a Surface as input.

public int getMaxPendingFrameCount()

Returns the maximum number of frames that may be pending in the output Codec at a time, or 5 as a default value.

public String getName()

Returns the name of the underlying codec.

This name is of the actual codec, which may not be the same as the mediaCodecName passed to DefaultCodec.

public @Nullable ByteBuffer getOutputBuffer()

Returns the current output ByteBuffer, or null if unavailable.

This method must not be called on video decoders because they must output to a .

public @Nullable MediaCodec.BufferInfo getOutputBufferInfo()

Returns the BufferInfo associated with the current output buffer, or null if there is no output buffer available.

This method returns null if and only if getOutputBuffer returns null.

public @Nullable Format getOutputFormat()

Returns the current output format, or null if unavailable.

public boolean isEnded()

Returns whether the Codec's output stream has ended, and no more data can be dequeued.

@EnsuresNonNullIf(expression = "#1.data", result = true)
public boolean maybeDequeueInputBuffer(DecoderInputBuffer inputBuffer)

Dequeues a writable input buffer, if available.

This method must not be called from video encoders because they must use a Surface to receive input.

public void queueInputBuffer(DecoderInputBuffer inputBuffer)

Queues an input buffer to the Codec. No buffers may be queued after end of stream buffer has been queued.

This method must not be called from video encoders because they must use a Surface to receive input.

public void release()

Releases the Codec.

public void releaseOutputBuffer(boolean render)

Releases the current output buffer.

Only set render to true when the Codec is a video decoder. Setting render to true will first render the buffer to the output surface. In this case, the surface will release the buffer back to the Codec once it is no longer used/displayed.

This should be called after the buffer has been processed. The next output buffer will not be available until the current output buffer has been released.

Calling this method with render set to true is equivalent to calling releaseOutputBuffer with the presentation timestamp of the output buffer info.

public void releaseOutputBuffer(long renderPresentationTimeUs)

Renders and releases the current output buffer.

This method must only be called on video decoders.

This method will first render the buffer to the output surface. The surface will then release the buffer back to the Codec once it is no longer used/displayed.

This should be called after the buffer has been processed. The next output buffer will not be available until the current output buffer has been released.

public void signalEndOfInputStream()

Signals end-of-stream on input to a video encoder.

This method must only be called on video encoders because they must use a Surface as input. For audio/video decoders or audio encoders, the BUFFER_FLAG_END_OF_STREAM flag should be set on the last input buffer queued.

@VisibleForTesting
protected void releaseOutputBuffer(boolean render, long renderPresentationTimeUs)

Releases the output buffer at renderPresentationTimeUs if render is true, otherwise release the buffer without rendering.