Method AddConstant

tests/gtest/avifsampletransformtest.cc:21–25

  ~AvifExpression() { avifArrayDestroy(this); }

  void AddConstant(int32_t constant) {
    avifSampleTransformToken& token = AddToken();
    token.type = AVIF_SAMPLE_TRANSFORM_CONSTANT;
    token.constant = constant;
  }
  void AddImage(uint8_t inputImageItemIndex) {
    avifSampleTransformToken& token = AddToken();
    token.type = AVIF_SAMPLE_TRANSFORM_INPUT_IMAGE_ITEM_INDEX;