Throw if tone-mapping is requested but not enabled

In the case where this check fails, the downstream frame processor chain won't be able to handle the incoming (SDR) data anyway as we've already set it up for HDR.

PiperOrigin-RevId: 465584814

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

@@ -16,6 +16,7 @@
 
 package com.google.android.exoplayer2.transformer;
 
+import static com.google.android.exoplayer2.util.Assertions.checkArgument;
 import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
 import static com.google.android.exoplayer2.util.Assertions.checkState;
 import static com.google.android.exoplayer2.util.Assertions.checkStateNotNull;
@@ -27,7 +28,9 @@ import android.media.MediaCodec.BufferInfo;
 import android.media.MediaCrypto;
 import android.media.MediaFormat;
 import android.view.Surface;
+import androidx.annotation.DoNotInline;
 import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
 import androidx.annotation.VisibleForTesting;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
@@ -35,6 +38,7 @@ import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
 import com.google.android.exoplayer2.util.MediaFormatUtil;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.TraceUtil;
+import com.google.android.exoplayer2.util.Util;
 import com.google.android.exoplayer2.video.ColorInfo;
 import com.google.common.base.Ascii;
 import com.google.common.collect.ImmutableList;
@@ -54,12 +58,8 @@ public final class DefaultCodec implements Codec {
   private final MediaFormat configurationMediaFormat;
 
   private final Format configurationFormat;
-  /** The expected {@link ColorInfo} output from the codec. */
-  @Nullable private final ColorInfo configuredOutputColor;
-
   private final MediaCodec mediaCodec;
   @Nullable private final Surface inputSurface;
-
   private final boolean decoderNeedsFrameDroppingWorkaround;
 
   private @MonotonicNonNull Format outputFormat;
@@ -101,8 +101,18 @@ public final class DefaultCodec implements Codec {
     @Nullable MediaCodec mediaCodec = null;
     @Nullable Surface inputSurface = null;
     try {
+      boolean requestedHdrToneMapping =
+          Util.SDK_INT >= 29 && Api29.isSdrToneMappingEnabled(configurationMediaFormat);
       mediaCodec = MediaCodec.createByCodecName(mediaCodecName);
       configureCodec(mediaCodec, configurationMediaFormat, isDecoder, outputSurface);
+      if (SDK_INT >= 29 && requestedHdrToneMapping) {
+        // The MediaCodec input format reflects whether tone-mapping is possible after configure().
+        // See
+        // https://developer.android.com/reference/android/media/MediaFormat#KEY_COLOR_TRANSFER_REQUEST.
+        checkArgument(
+            Api29.isSdrToneMappingEnabled(mediaCodec.getInputFormat()),
+            "Tone-mapping requested but not supported by the decoder");
+      }
       if (isVideo && !isDecoder) {
         inputSurface = mediaCodec.createInputSurface();
       }
@@ -119,12 +129,6 @@ public final class DefaultCodec implements Codec {
           e, configurationMediaFormat, isVideo, isDecoder, mediaCodecName);
     }
     this.mediaCodec = mediaCodec;
-    boolean toneMapRequested =
-        SDK_INT >= 31
-            && isDecoder
-            && (configurationMediaFormat.getInteger(MediaFormat.KEY_COLOR_TRANSFER_REQUEST, 0)
-                == MediaFormat.COLOR_TRANSFER_SDR_VIDEO);
-    configuredOutputColor = toneMapRequested ? null : configurationFormat.colorInfo;
     this.inputSurface = inputSurface;
     decoderNeedsFrameDroppingWorkaround = decoderNeedsFrameDroppingWorkaround(context);
   }
@@ -281,11 +285,7 @@ public final class DefaultCodec implements Codec {
    */
   @Override
   public String getName() {
-    if (SDK_INT >= 29) {
-      return mediaCodec.getCanonicalName();
-    }
-
-    return mediaCodec.getName();
+    return SDK_INT >= 29 ? Api29.getCanonicalName(mediaCodec) : mediaCodec.getName();
   }
 
   @VisibleForTesting
@@ -318,15 +318,19 @@ public final class DefaultCodec implements Codec {
     if (outputBufferIndex < 0) {
       if (outputBufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
         outputFormat = convertToFormat(mediaCodec.getOutputFormat());
-        if (!areColorTransfersEqual(configuredOutputColor, outputFormat.colorInfo)) {
+        boolean isToneMappingEnabled =
+            SDK_INT >= 29 && Api29.isSdrToneMappingEnabled(configurationMediaFormat);
+        ColorInfo expectedColorInfo =
+            isToneMappingEnabled ? ColorInfo.SDR_BT709_LIMITED : configurationFormat.colorInfo;
+        if (!areColorTransfersEqual(expectedColorInfo, outputFormat.colorInfo)) {
           // TODO(b/237674316): These exceptions throw when the container ColorInfo doesn't match
           //  the video ColorInfo. Instead of throwing when seeing unexpected ColorInfos, consider
           //  reconfiguring downstream components (ex. FrameProcessor and encoder) when different
           //  ColorInfo values are output.
           throw createTransformationException(
               new IllegalStateException(
-                  "Codec output color format does not match configured color format. Configured: "
-                      + configuredOutputColor
+                  "Codec output color format does not match configured color format. Expected: "
+                      + expectedColorInfo
                       + ". Actual: "
                       + outputFormat.colorInfo));
         }
@@ -478,4 +482,21 @@ public final class DefaultCodec implements Codec {
     return SDK_INT < 29
         || context.getApplicationContext().getApplicationInfo().targetSdkVersion < 29;
   }
+
+  @RequiresApi(29)
+  private static final class Api29 {
+    @DoNotInline
+    public static String getCanonicalName(MediaCodec mediaCodec) {
+      return mediaCodec.getCanonicalName();
+    }
+
+    @DoNotInline
+    public static boolean isSdrToneMappingEnabled(MediaFormat mediaFormat) {
+      // MediaFormat.getInteger(String, int) was added in API 29 but applying a color transfer
+      // request is only possible from API 31.
+      return SDK_INT >= 31
+          && mediaFormat.getInteger(MediaFormat.KEY_COLOR_TRANSFER_REQUEST, /* defaultValue= */ 0)
+              == MediaFormat.COLOR_TRANSFER_SDR_VIDEO;
+    }
+  }
 }