BmpDecoder

java.lang.Object

org.ngengine.stbimage.BmpDecoder

All Implemented Interfaces:: StbDecoder

public class BmpDecoder extends Object implements StbDecoder

BMP decoder supporting 1/4/8/24/32-bit, uncompressed and RLE compressed.

Constructor Summary

Constructors

Constructor

Description

BmpDecoder(ByteBuffer buffer, IntFunction<ByteBuffer> allocator, boolean flipVertically)

Creates a BMP decoder instance.
Method Summary

Modifier and Type

Method

Description

IntFunction<ByteBuffer>

getAllocator()

Returns the allocator used by this decoder for output buffers.

StbImageInfo

info()

Reads image metadata without fully decoding pixel data.

static boolean

isBmp(ByteBuffer buffer)

Tests if the buffer starts with BMP magic bytes.

StbImageResult

load(int desiredChannels)

Decodes image pixels.

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

Methods inherited from interface org.ngengine.stbimage.StbDecoder
load16, loadAllFrames, loadf, loadNextFrame

Constructor Details
- BmpDecoder
  
  public BmpDecoder(ByteBuffer buffer, IntFunction<ByteBuffer> allocator, boolean flipVertically)
  
  Creates a BMP decoder instance.
  
  Parameters:
  
  buffer - source data
  
  allocator - output allocator
  
  flipVertically - true to flip decoded rows
Method Details
- isBmp
  
  public static boolean isBmp(ByteBuffer buffer)
  
  Tests if the buffer starts with BMP magic bytes.
  
  Parameters:
  
  buffer - source bytes
  
  Returns:
  
  true if BMP signature matches
- info
  
  public StbImageInfo info()
  
  Reads image metadata without fully decoding pixel data.
  
  Specified by:
  
  info in interface StbDecoder
  
  Returns:
  
  image information
- getAllocator
  
  public IntFunction<ByteBuffer> getAllocator()
  
  Returns the allocator used by this decoder for output buffers.
  
  Specified by:
  
  getAllocator in interface StbDecoder
  
  Returns:
  
  allocator function
- load
  
  public StbImageResult load(int desiredChannels)
  
  Decodes image pixels.
  
  Specified by:
  
  load in interface StbDecoder
  
  Parameters:
  
  desiredChannels - requested output channels (0 keeps source/default behavior)
  
  Returns:
  
  decoded image result