Move CachedRegionTracker to upstream root

PiperOrigin-RevId: 403914807

RELEASENOTES.md

@@ -14,6 +14,8 @@
         `com.google.android.exoplayer2.DeviceInfo`.
     *   Move `com.google.android.exoplayer2.drm.DecryptionException` to
         `com.google.android.exoplayer2.decoder.CryptoException`.
+    *   Move `com.google.android.exoplayer2.upstream.cache.CachedRegionTracker`
+        to `com.google.android.exoplayer2.upstream.CachedRegionTracker`.
     *   Make `ExoPlayer.Builder` return a `SimpleExoPlayer` instance.
     *   Deprecate `SimpleExoPlayer.Builder`. Use `ExoPlayer.Builder` instead.
     *   Remove `ExoPlayerLibraryInfo.GL_ASSERTIONS_ENABLED`. Use

library/core/src/main/java/com/google/android/exoplayer2/upstream/cache/CachedRegionTracker.java → library/core/src/main/java/com/google/android/exoplayer2/upstream/CachedRegionTracker.java

@@ -13,10 +13,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.upstream.cache;
+package com.google.android.exoplayer2.upstream;
 
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.extractor.ChunkIndex;
+import com.google.android.exoplayer2.upstream.cache.Cache;
+import com.google.android.exoplayer2.upstream.cache.CacheSpan;
 import com.google.android.exoplayer2.util.Log;
 import com.google.android.exoplayer2.util.Util;
 import java.util.Arrays;

library/core/src/test/java/com/google/android/exoplayer2/upstream/cache/CachedRegionTrackerTest.java → library/core/src/test/java/com/google/android/exoplayer2/upstream/CachedRegionTrackerTest.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.android.exoplayer2.upstream.cache;
+package com.google.android.exoplayer2.upstream;
 
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.ArgumentMatchers.any;
@@ -23,7 +23,8 @@ import static org.mockito.Mockito.when;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import com.google.android.exoplayer2.extractor.ChunkIndex;
-import com.google.android.exoplayer2.testutil.TestUtil;
+import com.google.android.exoplayer2.upstream.cache.Cache;
+import com.google.android.exoplayer2.upstream.cache.CacheSpan;
 import com.google.android.exoplayer2.util.Util;
 import java.io.File;
 import java.io.FileOutputStream;
@@ -56,7 +57,6 @@ public final class CachedRegionTrackerTest {
   @Mock private Cache cache;
   private CachedRegionTracker tracker;
 
-  private CachedContentIndex index;
   private File cacheDir;
 
   @Before
@@ -66,7 +66,6 @@ public final class CachedRegionTrackerTest {
     tracker = new CachedRegionTracker(cache, CACHE_KEY, CHUNK_INDEX);
     cacheDir =
         Util.createTempDirectory(ApplicationProvider.getApplicationContext(), "ExoPlayerTest");
-    index = new CachedContentIndex(TestUtil.getInMemoryDatabaseProvider());
   }
 
   @After
@@ -128,14 +127,13 @@ public final class CachedRegionTrackerTest {
   }
 
   private CacheSpan newCacheSpan(int position, int length) throws IOException {
-    int id = index.assignIdForKey(CACHE_KEY);
-    File cacheFile = createCacheSpanFile(cacheDir, id, position, length, 0);
-    return SimpleCacheSpan.createCacheEntry(cacheFile, length, index);
+    File cacheFile = createCacheSpanFile(cacheDir, position, length);
+    return new CacheSpan(CACHE_KEY, position, length, /* lastTouchTimestamp= */ 0, cacheFile);
   }
 
-  public static File createCacheSpanFile(
-      File cacheDir, int id, long offset, int length, long lastTouchTimestamp) throws IOException {
-    File cacheFile = SimpleCacheSpan.getCacheFile(cacheDir, id, offset, lastTouchTimestamp);
+  public static File createCacheSpanFile(File cacheDir, long position, int length)
+      throws IOException {
+    File cacheFile = new File(cacheDir, "test." + position);
     createTestFile(cacheFile, length);
     return cacheFile;
   }