Generalize frame processing error codes.

TransformationException error codes were previously tied to OpenGL
but other FrameProcessor implementations are possible. So this CL
renames the error codes.
Also, remove GL_INIT_FAILED error code, as FrameProcessor
implemenations may initialize resources on a background thread
after the factory method returns, so it's not obvious how to
distinguish between initialization failures and processing failures.

PiperOrigin-RevId: 463704902
(cherry picked from commit bac323d3)

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

@@ -68,8 +68,7 @@ public final class TransformationException extends Exception {
         ERROR_CODE_ENCODING_FAILED,
         ERROR_CODE_OUTPUT_FORMAT_UNSUPPORTED,
         ERROR_CODE_HDR_EDITING_UNSUPPORTED,
-        ERROR_CODE_GL_INIT_FAILED,
-        ERROR_CODE_GL_PROCESSING_FAILED,
+        ERROR_CODE_FRAME_PROCESSING_FAILED,
         ERROR_CODE_MUXING_FAILED,
       })
   public @interface ErrorCode {}
@@ -155,10 +154,8 @@ public final class TransformationException extends Exception {
 
   // Video editing errors (5xxx).
 
-  /** Caused by a GL initialization failure. */
-  public static final int ERROR_CODE_GL_INIT_FAILED = 5001;
-  /** Caused by a failure while using or releasing a GL program. */
-  public static final int ERROR_CODE_GL_PROCESSING_FAILED = 5002;
+  /** Caused by a frame processing failure. */
+  public static final int ERROR_CODE_FRAME_PROCESSING_FAILED = 5001;
 
   // Muxing errors (6xxx).
   /** Caused by a failure while muxing media samples. */
@@ -183,8 +180,7 @@ public final class TransformationException extends Exception {
           .put("ERROR_CODE_ENCODING_FAILED", ERROR_CODE_ENCODING_FAILED)
           .put("ERROR_CODE_OUTPUT_FORMAT_UNSUPPORTED", ERROR_CODE_OUTPUT_FORMAT_UNSUPPORTED)
           .put("ERROR_CODE_HDR_EDITING_UNSUPPORTED", ERROR_CODE_HDR_EDITING_UNSUPPORTED)
-          .put("ERROR_CODE_GL_INIT_FAILED", ERROR_CODE_GL_INIT_FAILED)
-          .put("ERROR_CODE_GL_PROCESSING_FAILED", ERROR_CODE_GL_PROCESSING_FAILED)
+          .put("ERROR_CODE_FRAME_PROCESSING_FAILED", ERROR_CODE_FRAME_PROCESSING_FAILED)
           .put("ERROR_CODE_MUXING_FAILED", ERROR_CODE_MUXING_FAILED)
           .buildOrThrow();
 
@@ -202,7 +198,7 @@ public final class TransformationException extends Exception {
    * Equivalent to {@link TransformationException#getErrorCodeName(int)
    * TransformationException.getErrorCodeName(this.errorCode)}.
    */
-  public final String getErrorCodeName() {
+  public String getErrorCodeName() {
     return getErrorCodeName(errorCode);
   }
 

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

@@ -120,7 +120,7 @@ import org.checkerframework.dataflow.qual.Pure;
                 public void onFrameProcessingError(FrameProcessingException exception) {
                   asyncErrorListener.onTransformationException(
                       TransformationException.createForFrameProcessingException(
-                          exception, TransformationException.ERROR_CODE_GL_PROCESSING_FAILED));
+                          exception, TransformationException.ERROR_CODE_FRAME_PROCESSING_FAILED));
                 }
 
                 @Override
@@ -140,7 +140,7 @@ import org.checkerframework.dataflow.qual.Pure;
               /* useHdr= */ encoderWrapper.isHdrEditingEnabled());
     } catch (FrameProcessingException e) {
       throw TransformationException.createForFrameProcessingException(
-          e, TransformationException.ERROR_CODE_GL_INIT_FAILED);
+          e, TransformationException.ERROR_CODE_FRAME_PROCESSING_FAILED);
     }
     frameProcessor.setInputFrameInfo(
         new FrameInfo(