Make it easier to use ExoPlayer modules in other projects

It's currently difficult to use ExoPlayer modules in other gradle
projects because they rely on constants and dependencies defined
in our own top level gradle file. This change moves the constants
into a separate file referenced directly from each module. It also
removes the need for the top level gradle file to declare a
dependency on com.novoda:bintray-release. This is now only needed
if "exoplayerPublishEnabled = true" is specified.

Issue: #2851
Issue: #2974

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=160272072

build.gradle

@@ -33,23 +33,7 @@ allprojects {
         jcenter()
     }
     project.ext {
-        // Important: ExoPlayer specifies a minSdkVersion of 9 because various
-        // components provided by the library may be of use on older devices.
-        // However, please note that the core media playback functionality
-        // provided by the library requires API level 16 or greater.
-        minSdkVersion = 9
-        compileSdkVersion = 25
-        targetSdkVersion = 25
-        buildToolsVersion = '25'
-        testSupportLibraryVersion = '0.5'
-        supportLibraryVersion = '25.3.1'
-        dexmakerVersion = '1.2'
-        mockitoVersion = '1.9.5'
-        releaseRepoName = getBintrayRepo()
-        releaseUserOrg = 'google'
-        releaseGroupId = 'com.google.android.exoplayer'
-        releaseVersion = 'r2.4.2'
-        releaseWebsite = 'https://github.com/google/ExoPlayer'
+        exoplayerPublishEnabled = true
     }
     if (it.hasProperty('externalBuildDir')) {
         if (!new File(externalBuildDir).isAbsolute()) {
@@ -59,10 +43,4 @@ allprojects {
     }
 }
 
-def getBintrayRepo() {
-    boolean publicRepo = hasProperty('publicRepo') &&
-        property('publicRepo').toBoolean()
-    return publicRepo ? 'exoplayer' : 'exoplayer-test'
-}
-
 apply from: 'javadoc_combined.gradle'

demo/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../version_constants.gradle'
 apply plugin: 'com.android.application'
 
 android {

extensions/cronet/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

extensions/ffmpeg/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

extensions/flac/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

extensions/gvr/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

extensions/ima/build.gradle

@@ -1,3 +1,4 @@
+apply from: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

extensions/okhttp/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

extensions/opus/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

extensions/vp9/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

library/all/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

library/core/build.gradle

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 apply plugin: 'com.android.library'
+apply from: '../../version_constants.gradle'
 
 android {
     compileSdkVersion project.ext.compileSdkVersion

library/dash/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

library/hls/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

library/smoothstreaming/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

library/ui/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

playbacktests/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

publish.gradle

@@ -11,14 +11,22 @@
 // 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.
+if (project.ext.has("exoplayerPublishEnabled")
+        && project.ext.exoplayerPublishEnabled) {
     apply plugin: 'bintray-release'
-
     publish {
         artifactId = releaseArtifact
         description = releaseDescription
-    repoName = releaseRepoName
-    userOrg = releaseUserOrg
-    groupId = releaseGroupId
         version = releaseVersion
-    website = releaseWebsite
+        repoName = getBintrayRepo()
+        userOrg = 'google'
+        groupId = 'com.google.android.exoplayer'
+        website = 'https://github.com/google/ExoPlayer'
+    }
+}
+
+def getBintrayRepo() {
+    boolean publicRepo = hasProperty('publicRepo') &&
+        property('publicRepo').toBoolean()
+    return publicRepo ? 'exoplayer' : 'exoplayer-test'
 }

testutils/build.gradle

@@ -11,6 +11,7 @@
 // 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: '../version_constants.gradle'
 apply plugin: 'com.android.library'
 
 android {

version_constants.gradle

@@ -0,0 +1,28 @@
+// 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.
+ext {
+    // Important: ExoPlayer specifies a minSdkVersion of 9 because various
+    // components provided by the library may be of use on older devices.
+    // However, please note that the core media playback functionality provided
+    // by the library requires API level 16 or greater.
+    minSdkVersion = 9
+    compileSdkVersion = 25
+    targetSdkVersion = 25
+    buildToolsVersion = '25'
+    testSupportLibraryVersion = '0.5'
+    supportLibraryVersion = '25.3.1'
+    dexmakerVersion = '1.2'
+    mockitoVersion = '1.9.5'
+    releaseVersion = 'r2.4.2'
+}