Adding mime type checking to Transformer to identify images.

PiperOrigin-RevId: 530711523

library/common/src/main/java/com/google/android/exoplayer2/util/MimeTypes.java

@@ -148,7 +148,11 @@ public final class MimeTypes {
 
   // image/ MIME types
 
+  public static final String IMAGE_PNG = BASE_TYPE_IMAGE + "/png";
+  public static final String IMAGE_WEBP = BASE_TYPE_IMAGE + "/webp";
   public static final String IMAGE_JPEG = BASE_TYPE_IMAGE + "/jpeg";
+  public static final String IMAGE_HEIC = BASE_TYPE_IMAGE + "/heic";
+  public static final String IMAGE_HEIF = BASE_TYPE_IMAGE + "/heif";
 
   /**
    * A non-standard codec string for E-AC3-JOC. Use of this constant allows for disambiguation

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/DefaultAssetLoaderFactory.java

@@ -24,6 +24,7 @@ import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.util.Clock;
+import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.common.collect.ImmutableList;
 import java.util.Locale;
 import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
@@ -113,6 +114,16 @@ public final class DefaultAssetLoaderFactory implements AssetLoader.Factory {
     if (localConfiguration == null) {
       return false;
     }
+    if (localConfiguration.mimeType != null) {
+      ImmutableList<String> supportedMimeTypes =
+          ImmutableList.of(
+              MimeTypes.IMAGE_PNG,
+              MimeTypes.IMAGE_WEBP,
+              MimeTypes.IMAGE_JPEG,
+              MimeTypes.IMAGE_HEIC,
+              MimeTypes.IMAGE_HEIF);
+      return supportedMimeTypes.contains(localConfiguration.mimeType);
+    }
     ImmutableList<String> supportedImageTypes =
         ImmutableList.of(".png", ".webp", ".jpg", ".jpeg", ".heic", ".heif");
     String uriPath = checkNotNull(localConfiguration.uri.getPath());