Add singleVariant publishing config to all published gradle files

Docs:
* https://developer.android.com/build/publish-library/configure-pub-variants#single-pub-var
* https://developer.android.com/reference/tools/gradle-api/8.0/com/android/build/api/dsl/PublishingOptions

This resolves the following warning from Android Gradle Plugin 7.2.2 and
helps unblock the upgrade to AGP 8.0.1:

> Software Components will not be created automatically for Maven
> publishing from Android Gradle Plugin 8.0. To opt-in to the future
> behavior, set the Gradle property
> `android.disableAutomaticComponentCreation=true` in the
> `gradle.properties` file or use the new publishing DSL.
>
> Affected Modules: `lib-cast`, `lib-common`, `lib-container`,
> `lib-database`, `lib-datasource`, `lib-datasource-cronet`,
> `lib-datasource-okhttp`, `lib-datasource-rtmp`, `lib-decoder`,
> `lib-effect`, `lib-exoplayer`, `lib-exoplayer-all (legacy)`,
> `lib-exoplayer-dash`, `lib-exoplayer-hls`, `lib-exoplayer-ima`,
> `lib-exoplayer-rtsp`, `lib-exoplayer-smoothstreaming`,
> `lib-exoplayer-workmanager`, `lib-extractor`, `lib-media2 (legacy)`,
> `lib-mediasession (legacy)`, `lib-muxer`, `lib-session`,
> `lib-transformer`, `lib-ui`, `lib-ui-leanback`, `test-utils`,
> `test-utils-robolectric`

Issue: androidx/media#409
PiperOrigin-RevId: 533464133

libraries/cast/build.gradle

@@ -15,6 +15,12 @@ apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 
 android {
     namespace 'androidx.media3.cast'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/common/build.gradle

@@ -35,6 +35,11 @@ android {
     lint {
         baseline = file("lint-baseline.xml")
     }
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/container/build.gradle

@@ -33,6 +33,12 @@ android {
         androidTest.assets.srcDir '../test_data/src/test/assets/'
         test.assets.srcDir '../test_data/src/test/assets/'
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 ext {

libraries/database/build.gradle

@@ -21,6 +21,12 @@ android {
             testCoverageEnabled = true
         }
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/datasource/build.gradle

@@ -26,6 +26,12 @@ android {
         androidTest.assets.srcDir '../test_data/src/test/assets'
         test.assets.srcDir '../test_data/src/test/assets'
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/datasource_cronet/build.gradle

@@ -15,6 +15,12 @@ apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 
 android {
     namespace 'androidx.media3.datasource.cronet'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/datasource_okhttp/build.gradle

@@ -17,6 +17,12 @@ android {
     namespace 'androidx.media3.datasource.okhttp'
 
     defaultConfig.minSdkVersion 21
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/datasource_rtmp/build.gradle

@@ -15,6 +15,12 @@ apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 
 android {
     namespace 'androidx.media3.datasource.rtmp'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/decoder/build.gradle

@@ -21,6 +21,12 @@ android {
             testCoverageEnabled = true
         }
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/effect/build.gradle

@@ -33,6 +33,12 @@ android {
         androidTest.assets.srcDir '../test_data/src/test/assets/'
         test.assets.srcDir '../test_data/src/test/assets/'
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/exoplayer/build.gradle

@@ -33,6 +33,12 @@ android {
         androidTest.assets.srcDir '../test_data/src/test/assets'
         test.assets.srcDir '../test_data/src/test/assets/'
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/exoplayer_dash/build.gradle

@@ -23,6 +23,12 @@ android {
     }
 
     sourceSets.test.assets.srcDir '../test_data/src/test/assets/'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/exoplayer_hls/build.gradle

@@ -23,6 +23,12 @@ android {
     }
 
     sourceSets.test.assets.srcDir '../test_data/src/test/assets/'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/exoplayer_ima/build.gradle

@@ -19,6 +19,12 @@ android {
     sourceSets {
         androidTest.assets.srcDir '../test_data/src/test/assets'
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/exoplayer_rtsp/build.gradle

@@ -23,6 +23,12 @@ android {
     }
 
     sourceSets.test.assets.srcDir '../test_data/src/test/assets/'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/exoplayer_smoothstreaming/build.gradle

@@ -23,6 +23,12 @@ android {
     }
 
     sourceSets.test.assets.srcDir '../test_data/src/test/assets/'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/exoplayer_workmanager/build.gradle

@@ -17,6 +17,12 @@ apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 
 android {
     namespace 'androidx.media3.exoplayer.workmanager'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/extractor/build.gradle

@@ -23,6 +23,12 @@ android {
     }
 
     sourceSets.test.assets.srcDir '../test_data/src/test/assets/'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/muxer/build.gradle

@@ -33,6 +33,12 @@ android {
         androidTest.assets.srcDir '../test_data/src/test/assets/'
         test.assets.srcDir '../test_data/src/test/assets/'
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 ext {

libraries/session/build.gradle

@@ -28,6 +28,11 @@ android {
     lint {
         baseline = file("lint-baseline.xml")
     }
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 dependencies {
     api project(modulePrefix + 'lib-common')

libraries/test_utils/build.gradle

@@ -15,6 +15,12 @@ apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 
 android {
     namespace 'androidx.media3.test.utils'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/test_utils_robolectric/build.gradle

@@ -16,6 +16,12 @@ apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 
 android {
     namespace 'androidx.media3.test.utils.robolectric'
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/transformer/build.gradle

@@ -33,6 +33,12 @@ android {
         androidTest.assets.srcDir '../test_data/src/test/assets/'
         test.assets.srcDir '../test_data/src/test/assets/'
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/ui/build.gradle

@@ -21,6 +21,12 @@ android {
     lint {
         baseline = file("lint-baseline.xml")
     }
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

libraries/ui_leanback/build.gradle

@@ -17,6 +17,12 @@ android {
     namespace 'androidx.media3.ui.leanback'
 
     defaultConfig.minSdkVersion 17
+
+    publishing {
+        singleVariant('release') {
+            withSourcesJar()
+        }
+    }
 }
 
 dependencies {

publish.gradle

@@ -44,7 +44,6 @@ afterEvaluate {
                         variant.attributes.attribute(
                             DocsType.DOCS_TYPE_ATTRIBUTE,
                             project.objects.named(DocsType, DocsType.SOURCES))
-                        variant.outgoing.artifact(androidSourcesJar)
                         components.release.addVariantsFromConfiguration(variant) {}
                     }
                     pom {
@@ -81,8 +80,3 @@ afterEvaluate {
     }
 }
 tasks.withType(PublishToMavenRepository) { it.dependsOn lint, test }
-
-task androidSourcesJar(type: Jar) {
-    archiveClassifier.set('sources')
-    from android.sourceSets.main.java.srcDirs
-}