# Copyright 2018 Kouhei Sutou <kou@clear-code.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

module GdkPixbuf
  class Pixbuf
    def to_arrow
      bytes = read_pixel_bytes
      buffer = Arrow::Buffer.new(bytes.to_s)
      buffer.instance_variable_set(:@bytes, bytes)
      shape = [height, width, n_channels]
      Arrow::Tensor.new(Arrow::UInt8DataType.new,
                        buffer,
                        shape,
                        nil,
                        nil)
    end
  end
end
