All Known Implementing Classes:

SingleFrameGlTextureProcessor
```
public interface GlTextureProcessor
```
Processes frames from one OpenGL 2D texture to another.
The GlTextureProcessor consumes input frames it accepts via queueInputFrame(TextureInfo, long) and surrenders each texture back to the caller via its listener once the texture's contents have been processed.
The GlTextureProcessor produces output frames asynchronously and notifies its owner when they are available via its listener. The GlTextureProcessor instance's owner must surrender the texture back to the GlTextureProcessor via releaseOutputFrame(TextureInfo) when it has finished processing it.
GlTextureProcessor implementations can choose to produce output frames before receiving input frames or process several input frames before producing an output frame. However, GlTextureProcessor implementations cannot assume that they will receive more than one input frame at a time, so they must process each input frame they accept even if they cannot produce output yet.
The methods in this interface must be called on the thread that owns the parent OpenGL context. If the implementation uses another OpenGL context, e.g., on another thread, it must configure it to share data with the context of thread the interface methods are called on.

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static interface`	`GlTextureProcessor.ErrorListener`	Listener for frame processing errors.
`static interface`	`GlTextureProcessor.InputListener`	Listener for input-related frame processing events.
`static interface`	`GlTextureProcessor.OutputListener`	Listener for output-related frame processing events.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`queueInputFrame(TextureInfo inputTexture, long presentationTimeUs)`	Processes an input frame if possible.
`void`	`release()`	Releases all resources.
`void`	`releaseOutputFrame(TextureInfo outputTexture)`	Notifies the texture processor that the frame on the given output texture is no longer used and can be overwritten.
`void`	`setErrorListener(GlTextureProcessor.ErrorListener errorListener)`	Sets the `GlTextureProcessor.ErrorListener`.
`void`	`setInputListener(GlTextureProcessor.InputListener inputListener)`	Sets the `GlTextureProcessor.InputListener`.
`void`	`setOutputListener(GlTextureProcessor.OutputListener outputListener)`	Sets the `GlTextureProcessor.OutputListener`.
`void`	`signalEndOfCurrentInputStream()`	Notifies the `GlTextureProcessor` that no further input frames belonging to the current input stream will be queued.

- Method Detail
  - setInputListener
```
void setInputListener(GlTextureProcessor.InputListener inputListener)
```
    Sets the GlTextureProcessor.InputListener.
  - setOutputListener
```
void setOutputListener(GlTextureProcessor.OutputListener outputListener)
```
    Sets the GlTextureProcessor.OutputListener.
  - setErrorListener
```
void setErrorListener(GlTextureProcessor.ErrorListener errorListener)
```
    Sets the GlTextureProcessor.ErrorListener.
  - queueInputFrame
```
void queueInputFrame(TextureInfo inputTexture,
                     long presentationTimeUs)
```
    Processes an input frame if possible.
    The GlTextureProcessor owns the accepted frame until it calls GlTextureProcessor.InputListener.onInputFrameProcessed(TextureInfo). The caller should not overwrite or release the texture before the GlTextureProcessor has finished processing it.
    This method must only be called when the GlTextureProcessor can accept an input frame.
    
    Parameters:
    
    inputTexture - A TextureInfo describing the texture containing the input frame.
    
    presentationTimeUs - The presentation timestamp of the input frame, in microseconds.
  - releaseOutputFrame
```
void releaseOutputFrame(TextureInfo outputTexture)
```
    Notifies the texture processor that the frame on the given output texture is no longer used and can be overwritten.
  - signalEndOfCurrentInputStream
```
void signalEndOfCurrentInputStream()
```
    Notifies the GlTextureProcessor that no further input frames belonging to the current input stream will be queued.
    Input frames that are queued after this method is called belong to a different input stream, so presentation timestamps may reset to start from a smaller presentation timestamp than the last frame of the previous input stream.
  - release
```
void release()
      throws FrameProcessingException
```
    Releases all resources.
    
    Throws:
    
    FrameProcessingException - If an error occurs while releasing resources.

Interface GlTextureProcessor

Nested Class Summary

Method Summary

Method Detail

setInputListener

setOutputListener

setErrorListener

queueInputFrame

releaseOutputFrame

signalEndOfCurrentInputStream

release