Add ICY demo application

build.gradle

@@ -20,6 +20,7 @@ buildscript {
         classpath 'com.android.tools.build:gradle:3.1.4'
         classpath 'com.novoda:bintray-release:0.8.1'
         classpath 'com.google.android.gms:strict-version-matcher-plugin:1.0.3'
+        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.71'
     }
     // Workaround for the following test coverage issue. Remove when fixed:
     // https://code.google.com/p/android/issues/detail?id=226070

demos/icy/README.md

@@ -0,0 +1,4 @@
+# ICY demo application #
+
+This folder contains a demo application that showcases the ExoPlayer Shoutcast
+Metadata (ICY) extension.

demos/icy/build.gradle

@@ -0,0 +1,62 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// 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.
+apply from: '../../constants.gradle'
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion project.ext.compileSdkVersion
+    buildToolsVersion project.ext.buildToolsVersion
+
+    compileOptions {
+        sourceCompatibility 1.8
+        targetCompatibility 1.8
+    }
+
+    defaultConfig {
+        versionName project.ext.releaseVersion
+        versionCode project.ext.releaseVersionCode
+        minSdkVersion 23
+        targetSdkVersion project.ext.targetSdkVersion
+    }
+
+    buildTypes {
+        release {
+            shrinkResources true
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt')
+        }
+        debug {
+            jniDebuggable = true
+        }
+    }
+
+    lintOptions {
+        // The demo app does not have translations.
+        disable 'MissingTranslation'
+    }
+}
+
+dependencies {
+    implementation project(modulePrefix + 'extension-icy')
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.android.support:design:28.0.0'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.2.71"
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:0.26.1'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:0.26.1'
+}
+
+apply plugin: 'com.google.android.gms.strict-version-matcher-plugin'

demos/icy/src/main/AndroidManifest.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 The Android Open Source Project
+
+     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.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:tools="http://schemas.android.com/tools"
+  package="com.google.android.exoplayer2.icydemo">
+
+  <uses-permission android:name="android.permission.INTERNET"/>
+
+  <application
+    android:allowBackup="true"
+    android:icon="@mipmap/ic_launcher"
+    android:label="@string/app_name"
+    android:roundIcon="@mipmap/ic_launcher_round"
+    android:supportsRtl="true"
+    android:theme="@style/AppTheme"
+    android:usesCleartextTraffic="true"
+    tools:ignore="AllowBackup,GoogleAppIndexingWarning">
+
+    <activity android:name=".MainActivity">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
+
+        <category android:name="android.intent.category.LAUNCHER"/>
+      </intent-filter>
+    </activity>
+
+  </application>
+
+</manifest>

demos/icy/src/main/java/com/google/android/exoplayer2/icydemo/MainActivity.kt

@@ -0,0 +1,160 @@
+package com.google.android.exoplayer2.icydemo
+
+import android.net.Uri
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.util.Log
+import com.google.android.exoplayer2.*
+import com.google.android.exoplayer2.audio.AudioAttributes
+import com.google.android.exoplayer2.ext.icy.IcyHttpDataSourceFactory
+import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory
+import com.google.android.exoplayer2.source.ExtractorMediaSource
+import com.google.android.exoplayer2.source.TrackGroupArray
+import com.google.android.exoplayer2.trackselection.DefaultTrackSelector
+import com.google.android.exoplayer2.trackselection.TrackSelectionArray
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory
+import com.google.android.exoplayer2.util.Util
+import kotlinx.android.synthetic.main.activity_main.*
+import kotlinx.coroutines.experimental.CoroutineStart
+import kotlinx.coroutines.experimental.Dispatchers
+import kotlinx.coroutines.experimental.GlobalScope
+import kotlinx.coroutines.experimental.async
+import okhttp3.OkHttpClient
+
+/**
+ * Test application, doesn't necessarily show the best way to do things.
+ */
+class MainActivity : AppCompatActivity() {
+    private var exoPlayer: SimpleExoPlayer? = null
+    private val exoPlayerEventListener = ExoPlayerEventListener()
+    private lateinit var userAgent: String
+    private var isPlaying = false
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        stream.setText(DEFAULT_STREAM)
+
+        userAgent = Util.getUserAgent(applicationContext, applicationContext.getString(R.string.app_name))
+
+        play_pause.setOnClickListener {
+            if (isPlaying) {
+                stop()
+                play_pause.setImageDrawable(resources.getDrawable(R.drawable.ic_play_arrow_black_24dp, null))
+            } else {
+                play()
+                play_pause.setImageDrawable(resources.getDrawable(R.drawable.ic_stop_black_24dp, null))
+            }
+        }
+    }
+
+    private fun play() {
+        GlobalScope.async(Dispatchers.Default, CoroutineStart.DEFAULT, null, {
+            if (exoPlayer == null) {
+                exoPlayer = ExoPlayerFactory.newSimpleInstance(applicationContext,
+                        DefaultRenderersFactory(applicationContext),
+                        DefaultTrackSelector(),
+                        DefaultLoadControl()
+                )
+                exoPlayer?.addListener(exoPlayerEventListener)
+            }
+
+            val audioAttributes = AudioAttributes.Builder()
+                    .setContentType(C.CONTENT_TYPE_MUSIC)
+                    .setUsage(C.USAGE_MEDIA)
+                    .build()
+            exoPlayer?.audioAttributes = audioAttributes
+
+            // Custom HTTP data source factory which requests Icy metadata and parses it if
+            // the stream server supports it
+            val client = OkHttpClient.Builder().build()
+            val icyHttpDataSourceFactory = IcyHttpDataSourceFactory.Builder(client)
+                    .setUserAgent(userAgent)
+                    .setIcyHeadersListener { icyHeaders ->
+                        Log.d(TAG, "onIcyMetaData: icyHeaders=$icyHeaders")
+                    }
+                    .setIcyMetadataChangeListener { icyMetadata ->
+                        Log.d(TAG, "onIcyMetaData: icyMetadata=$icyMetadata")
+                    }
+                    .build()
+
+            // Produces DataSource instances through which media data is loaded
+            val dataSourceFactory = DefaultDataSourceFactory(
+                    applicationContext, null, icyHttpDataSourceFactory
+            )
+            // Produces Extractor instances for parsing the media data
+            val extractorsFactory = DefaultExtractorsFactory()
+
+            // The MediaSource represents the media to be played
+            val mediaSource = ExtractorMediaSource.Factory(dataSourceFactory)
+                    .setExtractorsFactory(extractorsFactory)
+                    .createMediaSource(Uri.parse(stream.text.toString()))
+
+            // Prepares media to play (happens on background thread) and triggers
+            // {@code onPlayerStateChanged} callback when the stream is ready to play
+            exoPlayer?.prepare(mediaSource)
+        })
+    }
+
+    private fun stop() {
+        releaseResources(true)
+        isPlaying = false
+    }
+
+    private fun releaseResources(releasePlayer: Boolean) {
+        Log.d(TAG, "releaseResources: releasePlayer=$releasePlayer")
+
+        // Stops and releases player (if requested and available).
+        if (releasePlayer && exoPlayer != null) {
+            exoPlayer?.release()
+            exoPlayer?.removeListener(exoPlayerEventListener)
+            exoPlayer = null
+        }
+    }
+
+    private inner class ExoPlayerEventListener : Player.EventListener {
+        override fun onTimelineChanged(timeline: Timeline, manifest: Any?, reason: Int) {
+        }
+
+        override fun onTracksChanged(trackGroups: TrackGroupArray, trackSelections: TrackSelectionArray) {
+        }
+
+        override fun onLoadingChanged(isLoading: Boolean) {
+        }
+
+        override fun onPlayerStateChanged(playWhenReady: Boolean, playbackState: Int) {
+            Log.i(TAG, "onPlayerStateChanged: playWhenReady=$playWhenReady, playbackState=$playbackState")
+            when (playbackState) {
+                Player.STATE_IDLE, Player.STATE_BUFFERING, Player.STATE_READY ->
+                    isPlaying = true
+                Player.STATE_ENDED ->
+                    stop()
+            }
+        }
+
+        override fun onPlayerError(error: ExoPlaybackException) {
+            Log.e(TAG, "onPlayerStateChanged: error=$error")
+        }
+
+        override fun onPositionDiscontinuity(reason: Int) {
+        }
+
+        override fun onPlaybackParametersChanged(playbackParameters: PlaybackParameters) {
+        }
+
+        override fun onSeekProcessed() {
+        }
+
+        override fun onRepeatModeChanged(repeatMode: Int) {
+        }
+
+        override fun onShuffleModeEnabledChanged(shuffleModeEnabled: Boolean) {
+        }
+    }
+
+    companion object {
+        private const val TAG = "MainActivity"
+        private const val DEFAULT_STREAM = "http://ice1.somafm.com/indiepop-128-mp3"
+    }
+}

demos/icy/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillType="evenOdd"
+        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="78.5885"
+                android:endY="90.9159"
+                android:startX="48.7653"
+                android:startY="61.0927"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>