de.digitalcollections.turbojpeg.lib.libturbojpeg Maven / Gradle / Ivy

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ImageIO plugin for reading and writing JPEG images via libjpeg-turbo/turbojpeg. Requires the libjpeg-turbo and turbojpeg shared native libraries to be installed on the system.

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package de.digitalcollections.turbojpeg.lib;

import de.digitalcollections.turbojpeg.lib.enums.TJPF;
import de.digitalcollections.turbojpeg.lib.enums.TJSAMP;
import de.digitalcollections.turbojpeg.lib.structs.tjtransform;
import java.nio.Buffer;
import jnr.ffi.Pointer;
import jnr.ffi.annotations.Direct;
import jnr.ffi.annotations.In;
import jnr.ffi.annotations.Out;
import jnr.ffi.byref.IntByReference;
import jnr.ffi.byref.NativeLongByReference;
import jnr.ffi.byref.PointerByReference;
import jnr.ffi.types.u_int32_t;

public interface libturbojpeg {
  int tjCompress2(Pointer handle, Buffer srcBuf, int width, int pitch, int height, TJPF pixelFormat,
                  @In PointerByReference jpegBuf, @Out NativeLongByReference jpegSize,
                  TJSAMP jpegSubsamp, int jpegQual, int flags);
  int tjDecompress2(Pointer handle, @In Buffer jpegBuf, @u_int32_t long jpegSize, @Out Buffer dstBuf,
                    int width, int pitch, int height, TJPF pixelFormat, int flags);
  int tjDecompressHeader2(Pointer handle, Buffer jpegBuf, @u_int32_t long jpegSize,
                          @Out IntByReference width, @Out IntByReference  height, @Out IntByReference jpegSubsamp);
  int tjTransform(Pointer handle, @In Buffer jpegBuf, @u_int32_t long jpegSize, int n, PointerByReference outBuf,
                  @Out NativeLongByReference dstSizes, @Direct tjtransform transform, int flags);
  int tjDestroy(Pointer handle);
  void tjFree(Pointer bufPtr);
  String tjGetErrorStr();
  Pointer tjGetScalingFactors(@Out IntByReference numscalingfactors);
  Pointer tjInitCompress();
  Pointer tjInitDecompress();
  Pointer tjInitTransform();
  Pointer tjAlloc(int bytes);
  long tjBufSize(int width, int height, TJSAMP subsamp);

}