java.lang.Object
- org.lwjgl.egl.NVStreamMetadata

```
public class NVStreamMetadata
extends java.lang.Object
```
Native bindings to the NV_stream_metadata extension.
Application suites which make use of streams to transmit images may need to communicate additional data between the producer and consumer, synchronized with the frame updates. This data may change infrequently, such as a movie title and track number to be displayed to the user, or every frame, such as a focal length and exposure time used to process the image. Transmitting this data outside the scope of the stream may be inconvenient, particularly in the case of cross-process streams. But the nature of the data is highly application-dependent, so it is not feasible for an EGL implementation to define specific extensions for a broad range of application data.

This extension provides a means for an application (or application suite in the cross-process case) to associate arbitrary metadata with a stream. Multiple metadata fields are available, allowing them to be updated and used independently by separate subcomponents of producers and consumers, respectively. The format of the data is determined by the application, which is responsible for writing and reading it correctly.

Requires KHR_stream.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`EGL_CONSUMER_METADATA_NV` Accepted as `name` by `QueryStreamMetadataNV`.
`static int`	`EGL_MAX_STREAM_METADATA_BLOCK_SIZE_NV EGL_MAX_STREAM_METADATA_BLOCKS_NV EGL_MAX_STREAM_METADATA_TOTAL_SIZE_NV` Accepted as `attribute` by `QueryDisplayAttribNV`.
`static int`	`EGL_METADATA0_SIZE_NV EGL_METADATA0_TYPE_NV EGL_METADATA1_SIZE_NV EGL_METADATA1_TYPE_NV EGL_METADATA2_SIZE_NV EGL_METADATA2_TYPE_NV EGL_METADATA3_SIZE_NV EGL_METADATA3_TYPE_NV` Accepted in `attrib_list` by `CreateStreamKHR` and as `attribute` by `QueryStreamKHR`.
`static int`	`EGL_PENDING_METADATA_NV EGL_PRODUCER_METADATA_NV` Accepted as `name` by `QueryStreamMetadataNV`.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`eglQueryDisplayAttribNV(long dpy, int attribute, PointerBuffer value)`
`static boolean`	`eglQueryStreamMetadataNV(long dpy, long stream, int name, int n, int offset, java.nio.ByteBuffer data)`
`static boolean`	`eglSetStreamMetadataNV(long dpy, long stream, int n, int offset, java.nio.ByteBuffer data)`

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

- Field Detail
  - EGL_MAX_STREAM_METADATA_BLOCKS_NV
```
public static final int EGL_MAX_STREAM_METADATA_BLOCKS_NV
```
    Accepted as attribute by QueryDisplayAttribNV.
    
    See Also:
    
    Constant Field Values
  - EGL_MAX_STREAM_METADATA_BLOCK_SIZE_NV
```
public static final int EGL_MAX_STREAM_METADATA_BLOCK_SIZE_NV
```
    Accepted as attribute by QueryDisplayAttribNV.
    
    See Also:
    
    Constant Field Values
  - EGL_MAX_STREAM_METADATA_TOTAL_SIZE_NV
```
public static final int EGL_MAX_STREAM_METADATA_TOTAL_SIZE_NV
```
    Accepted as attribute by QueryDisplayAttribNV.
    
    See Also:
    
    Constant Field Values
  - EGL_PRODUCER_METADATA_NV
```
public static final int EGL_PRODUCER_METADATA_NV
```
    Accepted as name by QueryStreamMetadataNV.
    
    See Also:
    
    Constant Field Values
  - EGL_CONSUMER_METADATA_NV
```
public static final int EGL_CONSUMER_METADATA_NV
```
    Accepted as name by QueryStreamMetadataNV.
    
    See Also:
    
    Constant Field Values
  - EGL_PENDING_METADATA_NV
```
public static final int EGL_PENDING_METADATA_NV
```
    Accepted as name by QueryStreamMetadataNV.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA0_SIZE_NV
```
public static final int EGL_METADATA0_SIZE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA1_SIZE_NV
```
public static final int EGL_METADATA1_SIZE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA2_SIZE_NV
```
public static final int EGL_METADATA2_SIZE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA3_SIZE_NV
```
public static final int EGL_METADATA3_SIZE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA0_TYPE_NV
```
public static final int EGL_METADATA0_TYPE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA1_TYPE_NV
```
public static final int EGL_METADATA1_TYPE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA2_TYPE_NV
```
public static final int EGL_METADATA2_TYPE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
  - EGL_METADATA3_TYPE_NV
```
public static final int EGL_METADATA3_TYPE_NV
```
    Accepted in attrib_list by CreateStreamKHR and as attribute by QueryStreamKHR.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - eglQueryDisplayAttribNV
```
public static boolean eglQueryDisplayAttribNV(long dpy,
                                              int attribute,
                                              PointerBuffer value)
```
  - eglSetStreamMetadataNV
```
public static boolean eglSetStreamMetadataNV(long dpy,
                                             long stream,
                                             int n,
                                             int offset,
                                             java.nio.ByteBuffer data)
```
  - eglQueryStreamMetadataNV
```
public static boolean eglQueryStreamMetadataNV(long dpy,
                                               long stream,
                                               int name,
                                               int n,
                                               int offset,
                                               java.nio.ByteBuffer data)
```

Class NVStreamMetadata

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EGL_MAX_STREAM_METADATA_BLOCKS_NV

EGL_MAX_STREAM_METADATA_BLOCK_SIZE_NV

EGL_MAX_STREAM_METADATA_TOTAL_SIZE_NV

EGL_PRODUCER_METADATA_NV

EGL_CONSUMER_METADATA_NV

EGL_PENDING_METADATA_NV

EGL_METADATA0_SIZE_NV

EGL_METADATA1_SIZE_NV

EGL_METADATA2_SIZE_NV

EGL_METADATA3_SIZE_NV

EGL_METADATA0_TYPE_NV

EGL_METADATA1_TYPE_NV

EGL_METADATA2_TYPE_NV

EGL_METADATA3_TYPE_NV

Method Detail

eglQueryDisplayAttribNV

eglSetStreamMetadataNV

eglQueryStreamMetadataNV