Added dokka for generating documentation.

apng_library/build.gradle

@@ -1,6 +1,7 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
+apply plugin: "org.jetbrains.dokka"
 
 android {
     compileSdkVersion 29
@@ -40,4 +41,13 @@ dependencies {
 
 repositories {
     mavenCentral()
+}
+
+
+dokkaHtml.configure {
+    dokkaSourceSets {
+        named("main") {
+            noAndroidSdkLink.set(false)
+        }
+    }
 }

apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt

@@ -19,6 +19,7 @@ import oupson.apng.BuildConfig
 import oupson.apng.Loader
 import oupson.apng.chunks.IHDR
 import oupson.apng.chunks.fcTL
+import oupson.apng.decoder.ApngDecoder.Companion.decodeApng
 import oupson.apng.exceptions.BadApng
 import oupson.apng.exceptions.BadCRC
 import oupson.apng.utils.Utils
@@ -28,6 +29,10 @@ import java.net.URL
 import java.nio.ByteBuffer
 import java.util.zip.CRC32
 
+/**
+ * An APNG Decoder.
+ * Call [decodeApng]
+ */
 class ApngDecoder {
     interface Callback {
         /**

build.gradle

@@ -3,6 +3,7 @@
 buildscript {
     ext.kotlin_version = '1.4.10'
     ext.anko_version = '0.10.8'
+    ext.dokka_version = '1.4.0'
     repositories {
         google()
         jcenter()
@@ -12,6 +13,7 @@ buildscript {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
+        classpath "org.jetbrains.dokka:dokka-gradle-plugin:${dokka_version}"
     }
 }