Initial implementation of WebP converter

.gitignore

@@ -0,0 +1,5 @@
+/build
+local.properties
+
+.idea
+*.iml

build.xml

@@ -0,0 +1,129 @@
+<project name="one-webp" default="build" basedir=".">
+    <property file="${basedir}/local.properties"/>
+
+    <property name="build.dir" value="build"/>
+    <property name="src.dir"   value="src"/>
+
+    <property name="libjpeg-turbo.dir" value="/usr"/>
+    <property name="libpng.dir"        value="/usr"/>
+    <property name="libwebp.dir"       value="/usr"/>
+
+    <property name="build.native.dir" value="${build.dir}/native"/>
+    <property name="src.native.dir"   value="${src.dir}/one/webp/native"/>
+    <property name="gcc.extra.args"   value=""/>
+
+    <target name="init">
+        <mkdir dir="${build.dir}"/>
+    </target>
+
+    <target name="clean">
+        <delete dir="${build.dir}"/>
+    </target>
+
+    <target name="build" depends="compile-classes, webp-exe, webp-dll"/>
+
+    <target name="compile-classes" depends="init">
+        <echo message="Compiling classes..."/>
+        <mkdir dir="${build.dir}/classes"/>
+        <javac srcdir="${src.dir}" destdir="${build.dir}/classes" includeantruntime="false"/>
+    </target>
+
+    <target name="webp-dll">
+        <mkdir dir="${build.native.dir}"/>
+
+        <property name="cl" value="cl.exe"/>
+        <exec osfamily="Windows" executable="${cl}" dir="${build.native.dir}">
+            <arg value="/O2"/>
+            <arg value="/LD"/>
+            <arg value="/I"/>
+            <arg path="${java.home}/../include"/>
+            <arg value="/I"/>
+            <arg path="${java.home}/../include/win32"/>
+            <arg value="/I"/>
+            <arg path="${libjpeg-turbo.dir}/include"/>
+            <arg value="/I"/>
+            <arg path="${libpng.dir}/include"/>
+            <arg value="/I"/>
+            <arg path="${libwebp.dir}/include"/>
+            <arg path="${src.native.dir}/onewebp.c"/>
+            <arg path="${src.native.dir}/jniwrapper.c"/>
+            <arg path="${libjpeg-turbo.dir}/lib/turbojpeg-static.lib"/>
+            <arg path="${libpng.dir}/lib/libpng.lib"/>
+            <arg path="${libpng.dir}/lib/libz.lib"/>
+            <arg path="${libwebp.dir}/lib/libwebp.lib"/>
+        </exec>
+
+        <property name="gcc" value="gcc"/>
+        <exec os="Linux" executable="${gcc}" dir="${build.native.dir}">
+            <arg value="-O3"/>
+            <arg value="-shared"/>
+            <arg value="-fPIC"/>
+            <arg value="-I"/>
+            <arg path="${java.home}/../include"/>
+            <arg value="-I"/>
+            <arg path="${java.home}/../include/linux"/>
+            <arg value="-I"/>
+            <arg path="${libjpeg-turbo.dir}/include"/>
+            <arg value="-I"/>
+            <arg path="${libpng.dir}/include"/>
+            <arg value="-I"/>
+            <arg path="${libwebp.dir}/include"/>
+            <arg path="${src.native.dir}/onewebp.c"/>
+            <arg path="${src.native.dir}/jniwrapper.c"/>
+            <arg path="${libjpeg-turbo.dir}/lib64/libturbojpeg.a"/>
+            <arg path="${libpng.dir}/lib/libpng.a"/>
+            <arg path="${libwebp.dir}/lib/libwebp.a"/>
+            <arg line="-o libonewebp.so"/>
+            <arg value="-Wl,-soname,libonewebp.so"/>
+        </exec>
+    </target>
+
+    <target name="webp-exe">
+        <mkdir dir="${build.native.dir}"/>
+
+        <property name="cl" value="cl.exe"/>
+        <exec osfamily="Windows" executable="${cl}" dir="${build.native.dir}">
+            <arg value="/O2"/>
+            <arg value="/I"/>
+            <arg path="${java.home}/../include"/>
+            <arg value="/I"/>
+            <arg path="${java.home}/../include/win32"/>
+            <arg value="/I"/>
+            <arg path="${libjpeg-turbo.dir}/include"/>
+            <arg value="/I"/>
+            <arg path="${libpng.dir}/include"/>
+            <arg value="/I"/>
+            <arg path="${libwebp.dir}/include"/>
+            <arg path="${src.native.dir}/onewebp.c"/>
+            <arg path="${src.native.dir}/main.c"/>
+            <arg path="${libjpeg-turbo.dir}/lib/turbojpeg-static.lib"/>
+            <arg path="${libpng.dir}/lib/libpng.lib"/>
+            <arg path="${libpng.dir}/lib/libz.lib"/>
+            <arg path="${libwebp.dir}/lib/libwebp.lib"/>
+        </exec>
+
+        <property name="gcc" value="gcc"/>
+        <exec os="Linux" executable="${gcc}" dir="${build.native.dir}">
+            <arg value="-O3"/>
+            <arg value="-I"/>
+            <arg path="${java.home}/../include"/>
+            <arg value="-I"/>
+            <arg path="${java.home}/../include/linux"/>
+            <arg value="-I"/>
+            <arg path="${libjpeg-turbo.dir}/include"/>
+            <arg value="-I"/>
+            <arg path="${libpng.dir}/include"/>
+            <arg value="-I"/>
+            <arg path="${libwebp.dir}/include"/>
+            <arg path="${src.native.dir}/onewebp.c"/>
+            <arg path="${src.native.dir}/main.c"/>
+            <arg path="${libjpeg-turbo.dir}/lib64/libturbojpeg.a"/>
+            <arg path="${libpng.dir}/lib/libpng.a"/>
+            <arg path="${libwebp.dir}/lib/libwebp.a"/>
+            <arg value="-lm"/>
+            <arg value="-lz"/>
+            <arg value="-lpthread"/>
+            <arg line="-o onewebp"/>
+        </exec>
+    </target>
+</project>

src/one/webp/Converter.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package one.webp;
+
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Arrays;
+
+import static java.nio.file.StandardOpenOption.*;
+
+public class Converter {
+
+    private static int parseParams(String[] args, Params params) {
+        int i = 0;
+        while (i < args.length - 2) {
+            switch (args[i++]) {
+                case "-q":
+                    params.quality(Integer.parseInt(args[i++]));
+                    break;
+                case "-c":
+                    params.compression(Integer.parseInt(args[i++]));
+                    break;
+                case "-w":
+                    params.maxWidth(Integer.parseInt(args[i++]));
+                    break;
+                case "-h":
+                    params.maxHeight(Integer.parseInt(args[i++]));
+                    break;
+                case "-j":
+                    params.useJpegScaling(true);
+                    break;
+                case "-l":
+                    params.lossless(true);
+                    break;
+                case "-mt":
+                    params.multithreaded(true);
+                    break;
+            }
+        }
+        return i;
+    }
+
+    public static void main(String[] args) throws Exception {
+        Params params = new Params();
+        int paramCount = parseParams(args, params);
+        if (paramCount + 2 != args.length) {
+            throw new IllegalArgumentException("[options] <input.jpg|png> <output.webp>");
+        }
+
+        String inFile = args[paramCount];
+        String outFile = args[paramCount + 1];
+
+        byte[] src = Files.readAllBytes(Paths.get(inFile));
+        byte[] dst = new byte[4 * 1024 * 1024];
+        int dstSize = WebP.convert(src, dst, params);
+        Files.write(Paths.get(outFile), Arrays.copyOf(dst, dstSize), CREATE, TRUNCATE_EXISTING);
+    }
+}

src/one/webp/Params.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package one.webp;
+
+public class Params {
+    private byte quality = 80;
+    private byte compression = 5;
+    private short maxWidth;
+    private short maxHeight;
+    private boolean useJpegScaling;
+    private boolean lossless;
+    private boolean multithreaded;
+
+    public Params quality(int quality) {
+        check(quality >= 0 && quality <= 100);
+        this.quality = (byte) quality;
+        return this;
+    }
+
+    public Params compression(int compression) {
+        check(compression >= 1 && compression <= 6);
+        this.compression = (byte) compression;
+        return this;
+    }
+
+    public Params maxWidth(int maxWidth) {
+        check(maxWidth >= 1 && maxWidth <= 16383);
+        this.maxWidth = (short) maxWidth;
+        return this;
+    }
+
+    public Params maxHeight(int maxHeight) {
+        check(maxHeight >= 1 && maxHeight <= 16383);
+        this.maxHeight = (short) maxHeight;
+        return this;
+    }
+
+    public Params useJpegScaling(boolean useJpegScaling) {
+        this.useJpegScaling = useJpegScaling;
+        return this;
+    }
+
+    public Params lossless(boolean lossless) {
+        this.lossless = lossless;
+        return this;
+    }
+
+    public Params multithreaded(boolean multithreaded) {
+        this.multithreaded = multithreaded;
+        return this;
+    }
+
+    // See struct Params in onewebp.h
+    long longValue() {
+        return (long) maxWidth
+                | (long) maxHeight << 16
+                | (long) quality << 32
+                | (long) compression << 40
+                | (useJpegScaling ? 1L << 48 : 0)
+                | (lossless ? 1L << 49 : 0)
+                | (multithreaded ? 1L << 50 : 0);
+    }
+
+    private void check(boolean condition) {
+        if (!condition) {
+            throw new IllegalArgumentException();
+        }
+    }
+}

src/one/webp/WebP.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package one.webp;
+
+public class WebP {
+
+    public static int convert(byte[] src, byte[] dst, Params params) throws WebPException {
+        return convert0(src, dst, params.longValue());
+    }
+
+    public static byte[] convert(byte[] src, Params params) throws WebPException {
+        return convert1(src, params.longValue());
+    }
+
+    private static native int convert0(byte[] src, byte[] dst, long options);
+    private static native byte[] convert1(byte[] src, long options);
+
+    static {
+        System.loadLibrary("onewebp");
+    }
+}

src/one/webp/WebPException.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package one.webp;
+
+public class WebPException extends RuntimeException {
+
+    public WebPException(String message) {
+        super(message);
+    }
+}