VideoGraph

abstract void flush()

Flushes the inputs of the VideoGraph.

abstract Surface getInputSurface(int inputIndex)

Returns the input Surface at inputIndex.

abstract int getPendingInputFrameCount(int inputIndex)

Returns the number of pending input frames at inputIndex that has not been processed yet.

abstract boolean hasProducedFrameWithTimestampZero()

Returns whether the VideoGraph has produced a frame with zero presentation timestamp.

abstract void initialize()

Initialize the VideoGraph.

This method must be called before calling other methods.

If the method throws, the caller must call release.

abstract boolean queueInputBitmap(
    int inputIndex,
    Bitmap inputBitmap,
    TimestampIterator timestampIterator
)

Queues the input Bitmap at inputIndex.

abstract boolean queueInputTexture(
    int inputIndex,
    int textureId,
    long presentationTimeUs
)

Queues the input texture at inputIndex.

abstract void redraw()

Updates an available frame with the modified effects.

abstract void registerInput(@IntRange(from = 0) int inputIndex)

Registers a new input to the VideoGraph.

All inputs must be registered before rendering frames by calling registerInputFrame, queueInputBitmap or queueInputTexture.

If the method throws, the caller must call release.

abstract boolean registerInputFrame(int inputIndex)

Registers a new input frame at inputIndex.

abstract void registerInputStream(
    int inputIndex,
    @VideoFrameProcessor.InputType int inputType,
    Format format,
    List<Effect> effects,
    long offsetToAddUs
)

Informs the graph that a new input stream will be queued to the graph input corresponding to inputIndex.

After registering the first input stream, this method must only be called for the same index after the last frame of the already-registered input stream has been registered, last bitmap queued or last texture id queued.

This method blocks the calling thread until the previous input stream corresponding to the same inputIndex has been fully registered internally.

abstract void release()

Releases the associated resources.

This VideoGraph instance must not be used after this method is called.

abstract void renderOutputFrame(long renderTimeNs)

Renders the output frame from the VideoGraph.

This method must be called only for frames that have become available, calling the method renders the frame that becomes available the earliest but not yet rendered.

abstract void setOnInputFrameProcessedListener(
    int inputIndex,
    OnInputFrameProcessedListener listener
)

Sets the OnInputFrameProcessedListener at inputIndex.

abstract void setOnInputSurfaceReadyListener(int inputIndex, Runnable listener)

Sets a listener that's called when the input surface is ready to use at inputIndex.

abstract void setOutputSurfaceInfo(@Nullable SurfaceInfo outputSurfaceInfo)

Sets the output surface and supporting information.

The new output SurfaceInfo is applied from the next output frame rendered onwards. If the output SurfaceInfo is null, the VideoGraph will stop rendering pending frames and resume rendering once a non-null SurfaceInfo is set.

If the dimensions given in SurfaceInfo do not match the output size after applying the final effect the frames are resized before rendering to the surface and letter/pillar-boxing is applied.

The caller is responsible for tracking the lifecycle of the surface including calling this method with a new surface if it is destroyed. When this method returns, the previous output surface is no longer being used and can safely be released by the caller.

abstract void signalEndOfInput(int inputIndex)

Informs that no further inputs should be accepted at inputIndex.