| 1 | use nihav_codec_support::data::GenericCache; |
| 2 | use super::vpcommon::*; |
| 3 | |
| 4 | pub enum VPTreeDef<T: Copy> { |
| 5 | Index(u8), |
| 6 | Value(T), |
| 7 | } |
| 8 | |
| 9 | pub trait VPTreeReader { |
| 10 | fn read_tree<T:Copy>(&mut self, tree_def: &[VPTreeDef<T>], tree_prob: &[u8]) -> T; |
| 11 | } |
| 12 | |
| 13 | impl<'a> VPTreeReader for BoolCoder<'a> { |
| 14 | fn read_tree<T:Copy>(&mut self, tree_def: &[VPTreeDef<T>], tree_prob: &[u8]) -> T { |
| 15 | let mut idx = 0; |
| 16 | |
| 17 | loop { |
| 18 | let bit = self.read_prob(tree_prob[idx >> 1]); |
| 19 | match tree_def[idx + (bit as usize)] { |
| 20 | VPTreeDef::Value(v) => return v, |
| 21 | VPTreeDef::Index(ix) => { idx = ix as usize; }, |
| 22 | }; |
| 23 | } |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | #[repr(u8)] |
| 28 | #[derive(Clone,Copy,PartialEq,Debug,Default)] |
| 29 | pub enum PredMode { |
| 30 | #[default] |
| 31 | DCPred, |
| 32 | HPred, |
| 33 | VPred, |
| 34 | TMPred, |
| 35 | BPred, |
| 36 | |
| 37 | //sub-block prediction modes |
| 38 | LDPred, |
| 39 | RDPred, |
| 40 | VRPred, |
| 41 | VLPred, |
| 42 | HDPred, |
| 43 | HUPred, |
| 44 | |
| 45 | Inter, |
| 46 | } |
| 47 | |
| 48 | impl PredMode { |
| 49 | pub fn to_b_mode(self) -> Self { |
| 50 | if self == PredMode::DCPred { |
| 51 | self |
| 52 | } else { |
| 53 | PredMode::TMPred |
| 54 | } |
| 55 | } |
| 56 | pub fn to_b_index(self) -> usize { |
| 57 | match self { |
| 58 | PredMode::DCPred => 0, |
| 59 | PredMode::TMPred => 1, |
| 60 | PredMode::VPred => 2, |
| 61 | PredMode::HPred => 3, |
| 62 | PredMode::LDPred => 4, |
| 63 | PredMode::RDPred => 5, |
| 64 | PredMode::VRPred => 6, |
| 65 | PredMode::VLPred => 7, |
| 66 | PredMode::HDPred => 8, |
| 67 | PredMode::HUPred => 9, |
| 68 | _ => unreachable!(), |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | #[derive(Clone,Copy,PartialEq)] |
| 74 | pub enum DCTToken { |
| 75 | Zero, |
| 76 | One, |
| 77 | Two, |
| 78 | Three, |
| 79 | Four, |
| 80 | Cat1, |
| 81 | Cat2, |
| 82 | Cat3, |
| 83 | Cat4, |
| 84 | Cat5, |
| 85 | Cat6, |
| 86 | EOB, |
| 87 | } |
| 88 | |
| 89 | pub fn expand_token(bc: &mut BoolCoder, token: DCTToken) -> i16 { |
| 90 | let cat; |
| 91 | match token { |
| 92 | DCTToken::Zero => return 0, |
| 93 | DCTToken::One => return if bc.read_bool() { -1 } else { 1 }, |
| 94 | DCTToken::Two => return if bc.read_bool() { -2 } else { 2 }, |
| 95 | DCTToken::Three => return if bc.read_bool() { -3 } else { 3 }, |
| 96 | DCTToken::Four => return if bc.read_bool() { -4 } else { 4 }, |
| 97 | DCTToken::Cat1 => cat = 0, |
| 98 | DCTToken::Cat2 => cat = 1, |
| 99 | DCTToken::Cat3 => cat = 2, |
| 100 | DCTToken::Cat4 => cat = 3, |
| 101 | DCTToken::Cat5 => cat = 4, |
| 102 | DCTToken::Cat6 => cat = 5, |
| 103 | _ => unreachable!(), |
| 104 | }; |
| 105 | let mut add = 0i16; |
| 106 | let add_probs = &VP56_COEF_ADD_PROBS[cat]; |
| 107 | for prob in add_probs.iter() { |
| 108 | if *prob == 128 { break; } |
| 109 | add = (add << 1) | (bc.read_prob(*prob) as i16); |
| 110 | } |
| 111 | let sign = bc.read_bool(); |
| 112 | let level = VP56_COEF_BASE[cat] + add; |
| 113 | if !sign { |
| 114 | level |
| 115 | } else { |
| 116 | -level |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | #[derive(Clone,Copy,Debug,PartialEq)] |
| 121 | pub enum MVSplitMode { |
| 122 | TopBottom, |
| 123 | LeftRight, |
| 124 | Quarters, |
| 125 | Sixteenths, |
| 126 | } |
| 127 | |
| 128 | #[derive(Clone,Copy,Debug,PartialEq)] |
| 129 | pub enum SubMVRef { |
| 130 | Left, |
| 131 | Above, |
| 132 | New, |
| 133 | Zero, |
| 134 | } |
| 135 | |
| 136 | pub struct PredCache { |
| 137 | pub y_pred: GenericCache<u8>, |
| 138 | pub u_pred: GenericCache<u8>, |
| 139 | pub v_pred: GenericCache<u8>, |
| 140 | pub y2_pred: GenericCache<u8>, |
| 141 | pub y_pred_left: [u8; 4], |
| 142 | pub u_pred_left: [u8; 2], |
| 143 | pub v_pred_left: [u8; 2], |
| 144 | pub y2_pred_left: u8, |
| 145 | } |
| 146 | |
| 147 | impl PredCache { |
| 148 | pub fn new() -> Self { |
| 149 | Self { |
| 150 | y_pred: GenericCache::new(1, 1, 0), |
| 151 | u_pred: GenericCache::new(1, 1, 0), |
| 152 | v_pred: GenericCache::new(1, 1, 0), |
| 153 | y2_pred: GenericCache::new(1, 1, 0), |
| 154 | y_pred_left: [0; 4], |
| 155 | u_pred_left: [0; 2], |
| 156 | v_pred_left: [0; 2], |
| 157 | y2_pred_left: 0, |
| 158 | } |
| 159 | } |
| 160 | pub fn resize(&mut self, mb_w: usize) { |
| 161 | self.y_pred = GenericCache::new(4, mb_w * 4 + 1, 0); |
| 162 | self.u_pred = GenericCache::new(2, mb_w * 2 + 1, 0); |
| 163 | self.v_pred = GenericCache::new(2, mb_w * 2 + 1, 0); |
| 164 | self.y2_pred = GenericCache::new(1, mb_w + 1, 0); |
| 165 | } |
| 166 | pub fn reset(&mut self) { |
| 167 | self.y_pred.reset(); |
| 168 | self.u_pred.reset(); |
| 169 | self.v_pred.reset(); |
| 170 | self.y2_pred.reset(); |
| 171 | self.y_pred_left = [0; 4]; |
| 172 | self.u_pred_left = [0; 2]; |
| 173 | self.v_pred_left = [0; 2]; |
| 174 | self.y2_pred_left = 0; |
| 175 | } |
| 176 | pub fn update_row(&mut self) { |
| 177 | self.y_pred.update_row(); |
| 178 | self.u_pred.update_row(); |
| 179 | self.v_pred.update_row(); |
| 180 | self.y2_pred.update_row(); |
| 181 | } |
| 182 | pub fn reset_left(&mut self) { |
| 183 | self.y_pred_left = [0; 4]; |
| 184 | self.u_pred_left = [0; 2]; |
| 185 | self.v_pred_left = [0; 2]; |
| 186 | self.y2_pred_left = 0; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | pub const Y_MODE_TREE: &[VPTreeDef<PredMode>] = &[ |
| 191 | VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Index(2), |
| 192 | VPTreeDef::Index(4), VPTreeDef::Index(6), |
| 193 | VPTreeDef::Value(PredMode::VPred), VPTreeDef::Value(PredMode::HPred), |
| 194 | VPTreeDef::Value(PredMode::TMPred), VPTreeDef::Value(PredMode::BPred), |
| 195 | ]; |
| 196 | pub const KF_Y_MODE_TREE: &[VPTreeDef<PredMode>] = &[ |
| 197 | VPTreeDef::Value(PredMode::BPred), VPTreeDef::Index(2), |
| 198 | VPTreeDef::Index(4), VPTreeDef::Index(6), |
| 199 | VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Value(PredMode::VPred), |
| 200 | VPTreeDef::Value(PredMode::HPred), VPTreeDef::Value(PredMode::TMPred), |
| 201 | ]; |
| 202 | pub const UV_MODE_TREE: &[VPTreeDef<PredMode>] = &[ |
| 203 | VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Index(2), |
| 204 | VPTreeDef::Value(PredMode::VPred), VPTreeDef::Index(4), |
| 205 | VPTreeDef::Value(PredMode::HPred), VPTreeDef::Value(PredMode::TMPred) |
| 206 | ]; |
| 207 | pub const B_MODE_TREE: &[VPTreeDef<PredMode>] = &[ |
| 208 | VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Index(2), |
| 209 | VPTreeDef::Value(PredMode::TMPred), VPTreeDef::Index(4), |
| 210 | VPTreeDef::Value(PredMode::VPred), VPTreeDef::Index(6), |
| 211 | VPTreeDef::Index(8), VPTreeDef::Index(12), |
| 212 | VPTreeDef::Value(PredMode::HPred), VPTreeDef::Index(10), |
| 213 | VPTreeDef::Value(PredMode::RDPred), VPTreeDef::Value(PredMode::VRPred), |
| 214 | VPTreeDef::Value(PredMode::LDPred), VPTreeDef::Index(14), |
| 215 | VPTreeDef::Value(PredMode::VLPred), VPTreeDef::Index(16), |
| 216 | VPTreeDef::Value(PredMode::HDPred), VPTreeDef::Value(PredMode::HUPred) |
| 217 | ]; |
| 218 | |
| 219 | pub const FEATURE_TREE: &[VPTreeDef<usize>] = &[ |
| 220 | VPTreeDef::Index(2), VPTreeDef::Index(4), |
| 221 | VPTreeDef::Value(0), VPTreeDef::Value(1), |
| 222 | VPTreeDef::Value(2), VPTreeDef::Value(3) |
| 223 | ]; |
| 224 | |
| 225 | pub const COEF_TREE: &[VPTreeDef<DCTToken>] = &[ |
| 226 | VPTreeDef::Value(DCTToken::EOB), VPTreeDef::Index(2), |
| 227 | VPTreeDef::Value(DCTToken::Zero), VPTreeDef::Index(4), |
| 228 | VPTreeDef::Value(DCTToken::One), VPTreeDef::Index(6), |
| 229 | VPTreeDef::Index(8), VPTreeDef::Index(12), |
| 230 | VPTreeDef::Value(DCTToken::Two), VPTreeDef::Index(10), |
| 231 | VPTreeDef::Value(DCTToken::Three), VPTreeDef::Value(DCTToken::Four), |
| 232 | VPTreeDef::Index(14), VPTreeDef::Index(16), |
| 233 | VPTreeDef::Value(DCTToken::Cat1), VPTreeDef::Value(DCTToken::Cat2), |
| 234 | VPTreeDef::Index(18), VPTreeDef::Index(20), |
| 235 | VPTreeDef::Value(DCTToken::Cat3), VPTreeDef::Value(DCTToken::Cat4), |
| 236 | VPTreeDef::Value(DCTToken::Cat5), VPTreeDef::Value(DCTToken::Cat6) |
| 237 | ]; |
| 238 | |
| 239 | pub const MV_REF_TREE: &[VPTreeDef<VPMBType>] = &[ |
| 240 | VPTreeDef::Value(VPMBType::InterNoMV), VPTreeDef::Index(2), |
| 241 | VPTreeDef::Value(VPMBType::InterNearest), VPTreeDef::Index(4), |
| 242 | VPTreeDef::Value(VPMBType::InterNear), VPTreeDef::Index(6), |
| 243 | VPTreeDef::Value(VPMBType::InterMV), VPTreeDef::Value(VPMBType::InterFourMV) |
| 244 | ]; |
| 245 | pub const SMALL_MV_TREE: &[VPTreeDef<i16>] = &[ |
| 246 | VPTreeDef::Index(2), VPTreeDef::Index(8), |
| 247 | VPTreeDef::Index(4), VPTreeDef::Index(6), |
| 248 | VPTreeDef::Value(0), VPTreeDef::Value(1), |
| 249 | VPTreeDef::Value(2), VPTreeDef::Value(3), |
| 250 | VPTreeDef::Index(10), VPTreeDef::Index(12), |
| 251 | VPTreeDef::Value(4), VPTreeDef::Value(5), |
| 252 | VPTreeDef::Value(6), VPTreeDef::Value(7) |
| 253 | ]; |
| 254 | pub const MV_SPLIT_MODE_TREE: &[VPTreeDef<MVSplitMode>] = &[ |
| 255 | VPTreeDef::Value(MVSplitMode::Sixteenths), VPTreeDef::Index(2), |
| 256 | VPTreeDef::Value(MVSplitMode::Quarters), VPTreeDef::Index(4), |
| 257 | VPTreeDef::Value(MVSplitMode::TopBottom), VPTreeDef::Value(MVSplitMode::LeftRight) |
| 258 | ]; |
| 259 | pub const SUB_MV_REF_TREE: &[VPTreeDef<SubMVRef>] = &[ |
| 260 | VPTreeDef::Value(SubMVRef::Left), VPTreeDef::Index(2), |
| 261 | VPTreeDef::Value(SubMVRef::Above), VPTreeDef::Index(4), |
| 262 | VPTreeDef::Value(SubMVRef::Zero), VPTreeDef::Value(SubMVRef::New) |
| 263 | ]; |
| 264 | |