Package org.lwjgl.stb

Interface STBIZlibCompressI

  • All Superinterfaces:
    CallbackI, CallbackI.P, Pointer
    All Known Implementing Classes:
    Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

    public interface STBIZlibCompressI
    extends CallbackI.P
    Instances of this interface may be set to STBImageWrite.stbi_zlib_compress.


     unsigned char * (*) (
         unsigned char *data,
         int data_len,
         int *out_len,
         int quality
    • Method Detail

      • getSignature

        default java.lang.String getSignature()
        Description copied from interface: CallbackI
        Returns the dyncall signature for this callback function. [INTERNAL API]
        Specified by:
        getSignature in interface CallbackI
        the dyncall signature
      • callback

        default long callback​(long args)
        Description copied from interface: CallbackI.P
        Will be called by native code.
        Specified by:
        callback in interface CallbackI.P
        args - pointer to a DCArgs iterator
        the value to store to the result DCValue
      • invoke

        long invoke​(long data,
                    int data_len,
                    long out_len,
                    int quality)
        Compresses a block of data using Zlib compression.

        The returned data will be freed with MemoryUtil.memFree(java.nio.Buffer) so it must be heap allocated with MemoryUtil.memAlloc(int).

        data - the data to compress
        data_len - the data length, in bytes
        out_len - returns the compressed data length, in bytes
        quality - the compression quality to use
        the compressed data