libwebp

README

SWIG bindings

Building

JNI SWIG bindings

 $ gcc -shared -fPIC -fno-strict-aliasing -O2 \
       -I/path/to/your/jdk/includes \
       libwebp_java_wrap.c \
       -lwebp \
       -o libwebp_jni.so

Example usage:

import com.google.webp.libwebp;

import java.lang.reflect.Method;

public class libwebp_jni_example {
  static {
    System.loadLibrary("webp_jni");
  }

  /**
   * usage: java -cp libwebp.jar:. libwebp_jni_example
   */
  public static void main(String argv[]) {
    final int version = libwebp.WebPGetDecoderVersion();
    System.out.println("libwebp version: " + Integer.toHexString(version));

    System.out.println("libwebp methods:");
    final Method[] libwebpMethods = libwebp.class.getDeclaredMethods();
    for (int i = 0; i < libwebpMethods.length; i++) {
      System.out.println(libwebpMethods[i]);
    }
  }
}

 $ javac -cp libwebp.jar libwebp_jni_example.java
 $ java -Djava.library.path=. -cp libwebp.jar:. libwebp_jni_example

Python SWIG bindings:

 $ python setup.py build_ext
 $ python setup.py install --prefix=pylocal

Example usage:

import glob
import sys
sys.path.append(glob.glob('pylocal/lib/python*/site-packages')[0])

from com.google.webp import libwebp
print "libwebp decoder version: %x" % libwebp.WebPGetDecoderVersion()

print "libwebp attributes:"
for attr in dir(libwebp): print attr

Documentation

Index

• func SwigCgocall()
• func SwigCgocallBack()
• func SwigCgocallBackDone()
• func SwigCgocallDone()
• func WebPGetDecoderVersion() int
• func WebPGetInfo(webp []byte) (ok bool, width int, height int)
• func Wrapped_WebPGetInfo(string, []int, []int) int

Functions

func SwigCgocall

func SwigCgocall()

func SwigCgocallBack

func SwigCgocallBack()

func SwigCgocallBackDone

func SwigCgocallBackDone()

func SwigCgocallDone

func SwigCgocallDone()

func WebPGetDecoderVersion

func WebPGetDecoderVersion() int

func WebPGetInfo

func WebPGetInfo(webp []byte) (ok bool, width int, height int)

WebPGetInfo has 2 output parameters, provide a version in the more natural go idiom:

func Wrapped_WebPGetInfo

func Wrapped_WebPGetInfo(string, []int, []int) int