FrameWriterToHardwareBufferFrameQueueAdapter
@RequiresApi(value = 26)
@ExperimentalApi
public final class FrameWriterToHardwareBufferFrameQueueAdapter implements HardwareBufferFrameQueue
Adapts a FrameWriter to the HardwareBufferFrameQueue interface.
Summary
Public constructors |
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Public methods |
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@Nullable HardwareBufferFrame |
dequeue(Attempts to dequeue a |
void |
queue(HardwareBufferFrame frame)Queues a |
void |
release()Releases all resources associated with this instance. |
void |
Signals that no more frames will be queued. |
Public constructors
FrameWriterToHardwareBufferFrameQueueAdapter
public FrameWriterToHardwareBufferFrameQueueAdapter(FrameWriter writer)
Public methods
dequeue
public @Nullable HardwareBufferFrame dequeue(
HardwareBufferFrameQueue.FrameFormat format,
Runnable wakeupListener
)
Attempts to dequeue a HardwareBufferFrame matching the specified format.
If the queue has reached its capacity and no buffers are available for reuse, this method returns null. In this case, the wakeupListener will be invoked when a buffer is eventually returned to the pool.
If this method is called multiple times without returning a frame, only the most recent wakeupListener is guaranteed to be invoked.
If a dequeued HardwareBufferFrame cannot be filled and queued back for any reason, it must be released.
| Parameters | |
|---|---|
HardwareBufferFrameQueue.FrameFormat format |
The required format for the dequeued buffer. |
Runnable wakeupListener |
A callback to notify the caller when a buffer becomes available. |
| Returns | |
|---|---|
@Nullable HardwareBufferFrame |
A |
queue
public void queue(HardwareBufferFrame frame)
Queues a HardwareBufferFrame for consumption by the downstream component.
The implementation is responsible for ensuring the buffer is correctly reused or released once the downstream component has finished processing it.
| Parameters | |
|---|---|
HardwareBufferFrame frame |
The frame to be processed. |
signalEndOfStream
public void signalEndOfStream()
Signals that no more frames will be queued.
This propagates an end-of-stream signal to the downstream consumer.