Stop explicitly creating a sourcesElement Gradle variant

This variant has been superceded by an equivalent
`releaseVariantReleaseRuntimePublication` variant which (I think) has
been created since d5f9cf4f19.

Before this change the `sourcesElement` variant was being created with
no `files` config, which resulted in build failures when generating
javadoc in AndroidX:

```
However we cannot choose between the following variants of androidx.media3:media3-cast:1.2.0-alpha01:
  - releaseVariantReleaseSourcePublication
  - sourcesElement
```

We can resolve this confusion by deleting the empty & unneeded
`sourcesElement` variant.

#minor-release

PiperOrigin-RevId: 558783471
(cherry picked from commit 849238a52f)

RELEASENOTES.md

@@ -1,6 +1,11 @@
 # Release notes
 
-### Unreleased changes
+## 1.2
+
+### 1.2.0-alpha01 (2023-08-17)
+
+This release includes the following changes since
+[1.1.1 release](#111-2023-08-14)):
 
 *   Common Library:
     *   Add a `@Nullable Throwable` parameter to the methods in the `Log.Logger`
@@ -40,7 +45,7 @@
         (([#33](https://github.com/androidx/media/issues/33)),([#9978](https://github.com/google/ExoPlayer/issues/9978))).
     *   Rename `MimeTypes.TEXT_EXOPLAYER_CUES` to
         `MimeTypes.APPLICATION_MEDIA3_CUES`.
-    *   Add `PngExtractor` that sends and reads a whole png file into the the
+    *   Add `PngExtractor` that sends and reads a whole PNG file into the
         `TrackOutput` as one sample.
     *   Enhance `SequenceableLoader.continueLoading(long)` method in the
         `SequenceableLoader` interface to
@@ -60,7 +65,6 @@
         associated constants. Use `Composition.HdrMode` and its associated
         constants instead.
     *   Simplify the `OverlaySettings` to fix rotation issues.
-*   Track Selection:
 *   Extractors:
     *   MPEG-TS: Ensure the last frame is rendered by passing the last access
         unit of a stream to the sample queue
@@ -73,7 +77,7 @@
         implementation details of an `Extractor` you must first call
         `Extractor.getUnderlyingInstance`.
 *   Audio:
-    *   Add support for 24/32-bit big endian PCM in MP4 and Matroska, and parse
+    *   Add support for 24/32-bit big-endian PCM in MP4 and Matroska, and parse
         PCM encoding for `lpcm` in MP4.
     *   Add support for extracting Vorbis audio in MP4.
 *   Audio Offload:
@@ -107,15 +111,9 @@
     *   Fix bug where the first frame couldn't be rendered if the audio stream
         starts with negative timestamps
         ([#291](https://github.com/androidx/media/issues/291)).
-*   Text:
-*   Metadata:
-*   DRM:
 *   Effect:
     *   Add `VideoFrameProcessor.queueInputBitmap(Bitmap, Iterator<Long>)`
         queuing bitmap input by timestamp.
-*   Muxers:
-*   IMA extension:
-*   Session:
 *   UI:
     *   Add a `Player.Listener` implementation for Wear OS devices that handles
         playback suppression due to
@@ -130,13 +128,6 @@
         add `dataSync` as `foregroundServiceType` in the manifest and add the
         `FOREGROUND_SERVICE_DATA_SYNC` permission
         ([#11239](https://github.com/google/ExoPlayer/issues/11239)).
-*   OkHttp Extension:
-*   Cronet Extension:
-*   RTMP Extension:
-*   HLS Extension:
-*   Smooth Streaming Extension:
-*   RTSP Extension:
-*   Decoder Extensions (FFmpeg, VP9, AV1, etc.):
 *   MIDI extension:
     *   Release the MIDI decoder module, which provides support for playback of
         standard MIDI files using the Jsyn library to synthesize audio.

constants.gradle

@@ -12,8 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 project.ext {
-    releaseVersion = '1.1.1'
+    releaseVersion = '1.2.0-alpha01'
-    releaseVersionCode = 1_001_001_3_00
+    releaseVersionCode = 1_002_000_0_01
     minSdkVersion = 16
     appTargetSdkVersion = 34
     // Upgrading this requires [Internal ref: b/193254928] to be fixed, or some

libraries/common/src/main/java/androidx/media3/common/MediaLibraryInfo.java

@@ -29,11 +29,11 @@ public final class MediaLibraryInfo {
 
   /** The version of the library expressed as a string, for example "1.2.3" or "1.2.3-beta01". */
   // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION_INT) or vice versa.
-  public static final String VERSION = "1.1.1";
+  public static final String VERSION = "1.2.0-alpha01";
 
   /** The version of the library expressed as {@code TAG + "/" + VERSION}. */
   // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa.
-  public static final String VERSION_SLASHY = "AndroidXMedia3/1.1.1";
+  public static final String VERSION_SLASHY = "AndroidXMedia3/1.2.0-alpha01";
 
   /**
    * The version of the library expressed as an integer, for example 1002003300.
@@ -47,7 +47,7 @@ public final class MediaLibraryInfo {
    * (123-045-006-3-00).
    */
   // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa.
-  public static final int VERSION_INT = 1_001_001_3_00;
+  public static final int VERSION_INT = 1_002_000_0_01;
 
   /** Whether the library was compiled with {@link Assertions} checks enabled. */
   public static final boolean ASSERTIONS_ENABLED = true;

missing_aar_type_workaround.gradle

@@ -36,6 +36,7 @@ def addMissingAarTypeToXml(xml) {
         "androidx.appcompat:appcompat",
         "androidx.core:core",
         "androidx.core:core-ktx",
+        "androidx.exifinterface:exifinterface",
         "androidx.leanback:leanback",
         "androidx.media:media",
         "androidx.media2:media2-session",

publish.gradle

@@ -29,23 +29,6 @@ afterEvaluate {
                     groupId = 'androidx.media3'
                     artifactId = findProperty('releaseArtifactId') ?: ''
                     version = findProperty('releaseVersion') ?: ''
-                    configurations.create("sourcesElement") { variant ->
-                        variant.visible = false
-                        variant.canBeResolved = false
-                        variant.attributes.attribute(
-                            Usage.USAGE_ATTRIBUTE,
-                            project.objects.named(Usage, Usage.JAVA_RUNTIME))
-                        variant.attributes.attribute(
-                            Category.CATEGORY_ATTRIBUTE,
-                            project.objects.named(Category, Category.DOCUMENTATION))
-                        variant.attributes.attribute(
-                            Bundling.BUNDLING_ATTRIBUTE,
-                            project.objects.named(Bundling, Bundling.EXTERNAL))
-                        variant.attributes.attribute(
-                            DocsType.DOCS_TYPE_ATTRIBUTE,
-                            project.objects.named(DocsType, DocsType.SOURCES))
-                        components.release.addVariantsFromConfiguration(variant) {}
-                    }
                     pom {
                         name =
                             findProperty('releaseName')