1 // Copyright 2024 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 use crate::decoder::Image; 16 use crate::image::YuvRange; 17 use crate::internal_utils::*; 18 use crate::parser::mp4box::ContentLightLevelInformation; 19 use crate::*; 20 21 #[derive(Debug, Default)] 22 pub struct GainMapMetadata { 23 pub min: [Fraction; 3], 24 pub max: [Fraction; 3], 25 pub gamma: [UFraction; 3], 26 pub base_offset: [Fraction; 3], 27 pub alternate_offset: [Fraction; 3], 28 pub base_hdr_headroom: UFraction, 29 pub alternate_hdr_headroom: UFraction, 30 pub use_base_color_space: bool, 31 } 32 33 #[derive(Default)] 34 pub struct GainMap { 35 pub image: Image, 36 pub metadata: GainMapMetadata, 37 38 pub alt_icc: Vec<u8>, 39 pub alt_color_primaries: ColorPrimaries, 40 pub alt_transfer_characteristics: TransferCharacteristics, 41 pub alt_matrix_coefficients: MatrixCoefficients, 42 pub alt_yuv_range: YuvRange, 43 44 pub alt_plane_count: u8, 45 pub alt_plane_depth: u8, 46 47 pub alt_clli: ContentLightLevelInformation, 48 } 49