TextureLoader (groundsdk 1.7.0 API)

java.lang.Object
- com.parrot.drone.groundsdk.stream.TextureLoader

```
public abstract class TextureLoader
extends Object
```
Allows to bypass default GL texture loading step when rendering a stream using GsdkStreamView.
Client code must specify dimensions for the GL texture that the renderer will provide.
Then, for each frame to be rendered, loadTexture(com.parrot.drone.groundsdk.stream.TextureLoader.TextureContext, com.parrot.drone.groundsdk.stream.TextureLoader.FrameContext) will be called; client code must override this callback to fill the GL texture according to its needs.
The renderer will then scale, pad and render the loaded texture as appropriate.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static interface`	`TextureLoader.FrameContext`	Contextual information on a frame.
`static interface`	`TextureLoader.TextureContext`	Contextual information on the texture.
`static class`	`TextureLoader.TextureSpec`	Allows to specify GL texture dimensions.

Constructor Summary

Constructors
Modifier Constructor Description

protected TextureLoader(TextureLoader.TextureSpec textureSpec)
Constructor.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`TextureLoader.TextureSpec`	`getTextureSpec()`	Retrieves configured texture specification.
`abstract boolean`	`loadTexture(TextureLoader.TextureContext textureContext, TextureLoader.FrameContext frameContext)`	Loads GL texture.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TextureLoader
```
protected TextureLoader(@NonNull
                        TextureLoader.TextureSpec textureSpec)
```
    Constructor.
    
    Parameters:
    
    textureSpec - texture specification
- Method Detail
  - getTextureSpec
```
@NonNull
public final TextureLoader.TextureSpec getTextureSpec()
```
    Retrieves configured texture specification.
    
    Returns:
    
    texture spec
  - loadTexture
```
public abstract boolean loadTexture(@NonNull
                                    TextureLoader.TextureContext textureContext,
                                    @NonNull
                                    TextureLoader.FrameContext frameContext)
```
    Loads GL texture.
    Called on GsdkStreamView GL rendering thread.
    
    Parameters:
    
    textureContext - contextual information about the texture where the frame is rendered, invalid after this method returns
    
    frameContext - contextual information about the frame to be rendered, invalid after this method returns
    
    Returns:
    
    true to indicate that texture loading was successful, otherwise false