docs: public void adjustForVerticalVideo(SCREEN_ROTATION orientation, boolean scaleToFit) {
          synchronized (mDrawLock) {
              mCorrectVerticalVideo = true;
              mScaleToFit = scaleToFit;
              requestedOrientation = orientation;
              Matrix.setIdentityM(IDENTITY_MATRIX, 0);
              switch (orientation) {
                  case VERTICAL:
                      if (scaleToFit) {
                          Matrix.rotateM(IDENTITY_MATRIX, 0, -90, 0f, 0f, 1f);
                          Matrix.scaleM(IDENTITY_MATRIX, 0, 3.16f, 1.0f, 1f);
                      } else {
                          Matrix.scaleM(IDENTITY_MATRIX, 0, 0.316f, 1f, 1f);
                      }
                      break;
                  case UPSIDEDOWN_LANDSCAPE:
                      if (scaleToFit) {
                          Matrix.rotateM(IDENTITY_MATRIX, 0, -180, 0f, 0f, 1f);
                      }
                      break;
                  case UPSIDEDOWN_VERTICAL:
                      if (scaleToFit) {
                          Matrix.rotateM(IDENTITY_MATRIX, 0, 90, 0f, 0f, 1f);
                          Matrix.scaleM(IDENTITY_MATRIX, 0, 3.16f, 1.0f, 1f);
                      } else {
                          Matrix.scaleM(IDENTITY_MATRIX, 0, 0.316f, 1f, 1f);
                      }
                      break;
              }
          }
      }