| 1 | //! Audio and image sample format definitions. |
| 2 | //! |
| 3 | //! NihAV does not have a fixed list of supported formats but rather accepts format definitions both for audio and video. |
| 4 | //! In result exotic formats like YUV410+alpha plane that is used by Indeo 4 are supported without any additional case handing. |
| 5 | //! Some common format definitions are provided as constants for convenience. |
| 6 | use std::str::FromStr; |
| 7 | use std::string::*; |
| 8 | use std::fmt; |
| 9 | |
| 10 | /// Generic format parsing error. |
| 11 | #[derive(Clone,Copy,Debug,PartialEq)] |
| 12 | pub struct FormatParseError {} |
| 13 | |
| 14 | /// Audio format definition. |
| 15 | /// |
| 16 | /// The structure describes how audio samples are stored and what characteristics they have. |
| 17 | #[derive(Debug,Copy,Clone,PartialEq)] |
| 18 | pub struct NASoniton { |
| 19 | /// Bits per sample. |
| 20 | pub bits: u8, |
| 21 | /// Audio format is big-endian. |
| 22 | pub be: bool, |
| 23 | /// Audio samples are packed (e.g. 20-bit audio samples). |
| 24 | pub packed: bool, |
| 25 | /// Audio data is stored in planar format instead of interleaving samples for different channels. |
| 26 | pub planar: bool, |
| 27 | /// Audio data is in floating point format. |
| 28 | pub float: bool, |
| 29 | /// Audio data is signed (usually only 8-bit audio is unsigned). |
| 30 | pub signed: bool, |
| 31 | } |
| 32 | |
| 33 | /// Flag for specifying that audio format is big-endian in `NASoniton::`[`new`]`()`. Related to [`be`] field of `NASoniton`. |
| 34 | /// |
| 35 | /// [`new`]: ./struct.NASoniton.html#method.new |
| 36 | /// [`be`]: ./struct.NASoniton.html#structfield.be |
| 37 | pub const SONITON_FLAG_BE :u32 = 0x01; |
| 38 | /// Flag for specifying that audio format has packed samples in `NASoniton::`[`new`]`()`. Related to [`packed`] field of `NASoniton`. |
| 39 | /// |
| 40 | /// [`new`]: ./struct.NASoniton.html#method.new |
| 41 | /// [`packed`]: ./struct.NASoniton.html#structfield.packed |
| 42 | pub const SONITON_FLAG_PACKED :u32 = 0x02; |
| 43 | /// Flag for specifying that audio data is stored as planar in `NASoniton::`[`new`]`()`. Related to [`planar`] field of `NASoniton`. |
| 44 | /// |
| 45 | /// [`new`]: ./struct.NASoniton.html#method.new |
| 46 | /// [`planar`]: ./struct.NASoniton.html#structfield.planar |
| 47 | pub const SONITON_FLAG_PLANAR :u32 = 0x04; |
| 48 | /// Flag for specifying that audio samples are in floating point format in `NASoniton::`[`new`]`()`. Related to [`float`] field of `NASoniton`. |
| 49 | /// |
| 50 | /// [`new`]: ./struct.NASoniton.html#method.new |
| 51 | /// [`float`]: ./struct.NASoniton.html#structfield.float |
| 52 | pub const SONITON_FLAG_FLOAT :u32 = 0x08; |
| 53 | /// Flag for specifying that audio format is signed in `NASoniton::`[`new`]`()`. Related to [`signed`] field of `NASoniton`. |
| 54 | /// |
| 55 | /// [`new`]: ./struct.NASoniton.html#method.new |
| 56 | /// [`signed`]: ./struct.NASoniton.html#structfield.signed |
| 57 | pub const SONITON_FLAG_SIGNED :u32 = 0x10; |
| 58 | |
| 59 | /// Predefined format for interleaved 8-bit unsigned audio. |
| 60 | pub const SND_U8_FORMAT: NASoniton = NASoniton { bits: 8, be: false, packed: false, planar: false, float: false, signed: false }; |
| 61 | /// Predefined format for interleaved 16-bit signed audio. |
| 62 | pub const SND_S16_FORMAT: NASoniton = NASoniton { bits: 16, be: false, packed: false, planar: false, float: false, signed: true }; |
| 63 | /// Predefined format for planar 16-bit signed audio. |
| 64 | pub const SND_S16P_FORMAT: NASoniton = NASoniton { bits: 16, be: false, packed: false, planar: true, float: false, signed: true }; |
| 65 | /// Predefined format for planar 32-bit signed audio. |
| 66 | pub const SND_S32P_FORMAT: NASoniton = NASoniton { bits: 32, be: false, packed: false, planar: true, float: false, signed: true }; |
| 67 | /// Predefined format for planar 32-bit floating point audio. |
| 68 | pub const SND_F32P_FORMAT: NASoniton = NASoniton { bits: 32, be: false, packed: false, planar: true, float: true, signed: true }; |
| 69 | |
| 70 | impl NASoniton { |
| 71 | /// Constructs a new audio format definition using flags like [`SONITON_FLAG_BE`]. |
| 72 | /// |
| 73 | /// [`SONITON_FLAG_BE`]: ./constant.SONITON_FLAG_BE.html |
| 74 | pub fn new(bits: u8, flags: u32) -> Self { |
| 75 | let is_be = (flags & SONITON_FLAG_BE) != 0; |
| 76 | let is_pk = (flags & SONITON_FLAG_PACKED) != 0; |
| 77 | let is_pl = (flags & SONITON_FLAG_PLANAR) != 0; |
| 78 | let is_fl = (flags & SONITON_FLAG_FLOAT) != 0; |
| 79 | let is_sg = (flags & SONITON_FLAG_SIGNED) != 0; |
| 80 | NASoniton { bits, be: is_be, packed: is_pk, planar: is_pl, float: is_fl, signed: is_sg } |
| 81 | } |
| 82 | |
| 83 | /// Returns the number of bits per sample. |
| 84 | pub fn get_bits(self) -> u8 { self.bits } |
| 85 | /// Reports whether the format is big-endian. |
| 86 | pub fn is_be(self) -> bool { self.be } |
| 87 | /// Reports whether the format has packed samples. |
| 88 | pub fn is_packed(self) -> bool { self.packed } |
| 89 | /// Reports whether audio data is planar instead of interleaved. |
| 90 | pub fn is_planar(self) -> bool { self.planar } |
| 91 | /// Reports whether audio samples are in floating point format. |
| 92 | pub fn is_float(self) -> bool { self.float } |
| 93 | /// Reports whether audio samples are signed. |
| 94 | pub fn is_signed(self) -> bool { self.signed } |
| 95 | |
| 96 | /// Returns the amount of bytes needed to store the audio of requested length (in samples). |
| 97 | pub fn get_audio_size(self, length: u64) -> usize { |
| 98 | if self.packed { |
| 99 | ((length * u64::from(self.bits) + 7) >> 3) as usize |
| 100 | } else { |
| 101 | (length * u64::from((self.bits + 7) >> 3)) as usize |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | /// Returns soniton description as a short string. |
| 106 | pub fn to_short_string(self) -> String { |
| 107 | let ltype = if self.float { 'f' } else if self.signed { 's' } else { 'u' }; |
| 108 | let endianness = if self.bits == 8 { "" } else if self.be { "be" } else { "le" }; |
| 109 | let planar = if self.planar { "p" } else { "" }; |
| 110 | let packed = if self.packed { "x" } else { "" }; |
| 111 | format!("{}{}{}{}{}", ltype, self.bits, endianness, planar, packed) |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | impl fmt::Display for NASoniton { |
| 116 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 117 | let fmt = if self.float { "float" } else if self.signed { "int" } else { "uint" }; |
| 118 | let end = if self.be { "BE" } else { "LE" }; |
| 119 | write!(f, "({} bps, {} planar: {} packed: {} {})", self.bits, end, self.planar, self.packed, fmt) |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | impl FromStr for NASoniton { |
| 124 | type Err = FormatParseError; |
| 125 | |
| 126 | fn from_str(s: &str) -> Result<Self, Self::Err> { |
| 127 | match s { |
| 128 | "u8" => Ok(NASoniton { bits: 8, be: true, packed: false, planar: false, float: false, signed: false }), |
| 129 | "s16be" => Ok(NASoniton { bits: 16, be: true, packed: false, planar: false, float: false, signed: true }), |
| 130 | "s16le" => Ok(NASoniton { bits: 16, be: false, packed: false, planar: false, float: false, signed: true }), |
| 131 | "s24be" => Ok(NASoniton { bits: 24, be: true, packed: false, planar: false, float: false, signed: true }), |
| 132 | "s24le" => Ok(NASoniton { bits: 24, be: false, packed: false, planar: false, float: false, signed: true }), |
| 133 | "s32be" => Ok(NASoniton { bits: 32, be: true, packed: false, planar: false, float: false, signed: true }), |
| 134 | "s32le" => Ok(NASoniton { bits: 32, be: false, packed: false, planar: false, float: false, signed: true }), |
| 135 | "f32be" => Ok(NASoniton { bits: 32, be: true, packed: false, planar: false, float: true, signed: true }), |
| 136 | "f32le" => Ok(NASoniton { bits: 32, be: false, packed: false, planar: false, float: true, signed: true }), |
| 137 | _ => Err(FormatParseError{}), |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | /// Known channel types. |
| 143 | #[derive(Debug,Clone,Copy,PartialEq)] |
| 144 | pub enum NAChannelType { |
| 145 | C, L, R, Cs, Ls, Rs, Lss, Rss, LFE, Lc, Rc, Lh, Rh, Ch, LFE2, Lw, Rw, Ov, Lhs, Rhs, Chs, Ll, Rl, Cl, Lt, Rt, Lo, Ro |
| 146 | } |
| 147 | |
| 148 | impl NAChannelType { |
| 149 | /// Reports whether this is some center channel. |
| 150 | pub fn is_center(self) -> bool { |
| 151 | match self { |
| 152 | NAChannelType::C => true, NAChannelType::Ch => true, |
| 153 | NAChannelType::Cl => true, NAChannelType::Ov => true, |
| 154 | NAChannelType::LFE => true, NAChannelType::LFE2 => true, |
| 155 | NAChannelType::Cs => true, NAChannelType::Chs => true, |
| 156 | _ => false, |
| 157 | } |
| 158 | } |
| 159 | /// Reports whether this is some left channel. |
| 160 | pub fn is_left(self) -> bool { |
| 161 | match self { |
| 162 | NAChannelType::L => true, NAChannelType::Ls => true, |
| 163 | NAChannelType::Lss => true, NAChannelType::Lc => true, |
| 164 | NAChannelType::Lh => true, NAChannelType::Lw => true, |
| 165 | NAChannelType::Lhs => true, NAChannelType::Ll => true, |
| 166 | NAChannelType::Lt => true, NAChannelType::Lo => true, |
| 167 | _ => false, |
| 168 | } |
| 169 | } |
| 170 | /// Reports whether this is some right channel. |
| 171 | pub fn is_right(self) -> bool { |
| 172 | match self { |
| 173 | NAChannelType::R => true, NAChannelType::Rs => true, |
| 174 | NAChannelType::Rss => true, NAChannelType::Rc => true, |
| 175 | NAChannelType::Rh => true, NAChannelType::Rw => true, |
| 176 | NAChannelType::Rhs => true, NAChannelType::Rl => true, |
| 177 | NAChannelType::Rt => true, NAChannelType::Ro => true, |
| 178 | _ => false, |
| 179 | } |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | impl FromStr for NAChannelType { |
| 184 | type Err = FormatParseError; |
| 185 | |
| 186 | fn from_str(s: &str) -> Result<Self, Self::Err> { |
| 187 | match s { |
| 188 | "C" => Ok(NAChannelType::C), |
| 189 | "L" => Ok(NAChannelType::L), |
| 190 | "R" => Ok(NAChannelType::R), |
| 191 | "Cs" => Ok(NAChannelType::Cs), |
| 192 | "Ls" => Ok(NAChannelType::Ls), |
| 193 | "Rs" => Ok(NAChannelType::Rs), |
| 194 | "Lss" => Ok(NAChannelType::Lss), |
| 195 | "Rss" => Ok(NAChannelType::Rss), |
| 196 | "LFE" => Ok(NAChannelType::LFE), |
| 197 | "Lc" => Ok(NAChannelType::Lc), |
| 198 | "Rc" => Ok(NAChannelType::Rc), |
| 199 | "Lh" => Ok(NAChannelType::Lh), |
| 200 | "Rh" => Ok(NAChannelType::Rh), |
| 201 | "Ch" => Ok(NAChannelType::Ch), |
| 202 | "LFE2" => Ok(NAChannelType::LFE2), |
| 203 | "Lw" => Ok(NAChannelType::Lw), |
| 204 | "Rw" => Ok(NAChannelType::Rw), |
| 205 | "Ov" => Ok(NAChannelType::Ov), |
| 206 | "Lhs" => Ok(NAChannelType::Lhs), |
| 207 | "Rhs" => Ok(NAChannelType::Rhs), |
| 208 | "Chs" => Ok(NAChannelType::Chs), |
| 209 | "Ll" => Ok(NAChannelType::Ll), |
| 210 | "Rl" => Ok(NAChannelType::Rl), |
| 211 | "Cl" => Ok(NAChannelType::Cl), |
| 212 | "Lt" => Ok(NAChannelType::Lt), |
| 213 | "Rt" => Ok(NAChannelType::Rt), |
| 214 | "Lo" => Ok(NAChannelType::Lo), |
| 215 | "Ro" => Ok(NAChannelType::Ro), |
| 216 | _ => Err(FormatParseError{}), |
| 217 | } |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | impl fmt::Display for NAChannelType { |
| 222 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 223 | let name = match *self { |
| 224 | NAChannelType::C => "C".to_string(), |
| 225 | NAChannelType::L => "L".to_string(), |
| 226 | NAChannelType::R => "R".to_string(), |
| 227 | NAChannelType::Cs => "Cs".to_string(), |
| 228 | NAChannelType::Ls => "Ls".to_string(), |
| 229 | NAChannelType::Rs => "Rs".to_string(), |
| 230 | NAChannelType::Lss => "Lss".to_string(), |
| 231 | NAChannelType::Rss => "Rss".to_string(), |
| 232 | NAChannelType::LFE => "LFE".to_string(), |
| 233 | NAChannelType::Lc => "Lc".to_string(), |
| 234 | NAChannelType::Rc => "Rc".to_string(), |
| 235 | NAChannelType::Lh => "Lh".to_string(), |
| 236 | NAChannelType::Rh => "Rh".to_string(), |
| 237 | NAChannelType::Ch => "Ch".to_string(), |
| 238 | NAChannelType::LFE2 => "LFE2".to_string(), |
| 239 | NAChannelType::Lw => "Lw".to_string(), |
| 240 | NAChannelType::Rw => "Rw".to_string(), |
| 241 | NAChannelType::Ov => "Ov".to_string(), |
| 242 | NAChannelType::Lhs => "Lhs".to_string(), |
| 243 | NAChannelType::Rhs => "Rhs".to_string(), |
| 244 | NAChannelType::Chs => "Chs".to_string(), |
| 245 | NAChannelType::Ll => "Ll".to_string(), |
| 246 | NAChannelType::Rl => "Rl".to_string(), |
| 247 | NAChannelType::Cl => "Cl".to_string(), |
| 248 | NAChannelType::Lt => "Lt".to_string(), |
| 249 | NAChannelType::Rt => "Rt".to_string(), |
| 250 | NAChannelType::Lo => "Lo".to_string(), |
| 251 | NAChannelType::Ro => "Ro".to_string(), |
| 252 | }; |
| 253 | write!(f, "{}", name) |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /// Channel map. |
| 258 | /// |
| 259 | /// This is essentially an ordered sequence of channels. |
| 260 | #[derive(Clone,Default)] |
| 261 | pub struct NAChannelMap { |
| 262 | ids: Vec<NAChannelType>, |
| 263 | } |
| 264 | |
| 265 | const MS_CHANNEL_MAP: [NAChannelType; 11] = [ |
| 266 | NAChannelType::L, |
| 267 | NAChannelType::R, |
| 268 | NAChannelType::C, |
| 269 | NAChannelType::LFE, |
| 270 | NAChannelType::Ls, |
| 271 | NAChannelType::Rs, |
| 272 | NAChannelType::Lss, |
| 273 | NAChannelType::Rss, |
| 274 | NAChannelType::Cs, |
| 275 | NAChannelType::Lc, |
| 276 | NAChannelType::Rc, |
| 277 | ]; |
| 278 | |
| 279 | impl NAChannelMap { |
| 280 | /// Constructs a new `NAChannelMap` instance. |
| 281 | pub fn new() -> Self { NAChannelMap { ids: Vec::new() } } |
| 282 | /// Adds a new channel to the map. |
| 283 | pub fn add_channel(&mut self, ch: NAChannelType) { |
| 284 | self.ids.push(ch); |
| 285 | } |
| 286 | /// Adds several channels to the map at once. |
| 287 | pub fn add_channels(&mut self, chs: &[NAChannelType]) { |
| 288 | for e in chs.iter() { |
| 289 | self.ids.push(*e); |
| 290 | } |
| 291 | } |
| 292 | /// Returns the total number of channels. |
| 293 | pub fn num_channels(&self) -> usize { |
| 294 | self.ids.len() |
| 295 | } |
| 296 | /// Reports channel type for a requested index. |
| 297 | pub fn get_channel(&self, idx: usize) -> NAChannelType { |
| 298 | self.ids[idx] |
| 299 | } |
| 300 | /// Tries to find position of the channel with requested type. |
| 301 | pub fn find_channel_id(&self, t: NAChannelType) -> Option<u8> { |
| 302 | for i in 0..self.ids.len() { |
| 303 | if self.ids[i] as i32 == t as i32 { return Some(i as u8); } |
| 304 | } |
| 305 | None |
| 306 | } |
| 307 | /// Creates a new `NAChannelMap` using the channel mapping flags from WAVE format. |
| 308 | pub fn from_ms_mapping(chmap: u32) -> Self { |
| 309 | let mut cm = NAChannelMap::new(); |
| 310 | for (i, ch) in MS_CHANNEL_MAP.iter().enumerate() { |
| 311 | if ((chmap >> i) & 1) != 0 { |
| 312 | cm.add_channel(*ch); |
| 313 | } |
| 314 | } |
| 315 | cm |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | impl fmt::Display for NAChannelMap { |
| 320 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 321 | let mut map = String::new(); |
| 322 | for el in self.ids.iter() { |
| 323 | if !map.is_empty() { map.push(','); } |
| 324 | map.push_str(&*el.to_string()); |
| 325 | } |
| 326 | write!(f, "{}", map) |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | impl FromStr for NAChannelMap { |
| 331 | type Err = FormatParseError; |
| 332 | |
| 333 | fn from_str(s: &str) -> Result<Self, Self::Err> { |
| 334 | let mut chm = NAChannelMap::new(); |
| 335 | for tok in s.split(',') { |
| 336 | chm.add_channel(NAChannelType::from_str(tok)?); |
| 337 | } |
| 338 | Ok(chm) |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | /// A list of RGB colour model variants. |
| 343 | #[derive(Debug,Clone,Copy,PartialEq)] |
| 344 | pub enum RGBSubmodel { |
| 345 | RGB, |
| 346 | SRGB, |
| 347 | } |
| 348 | |
| 349 | impl fmt::Display for RGBSubmodel { |
| 350 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 351 | let name = match *self { |
| 352 | RGBSubmodel::RGB => "RGB".to_string(), |
| 353 | RGBSubmodel::SRGB => "sRGB".to_string(), |
| 354 | }; |
| 355 | write!(f, "{}", name) |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | /// A list of YUV colour model variants. |
| 360 | #[derive(Debug,Clone,Copy,PartialEq)] |
| 361 | pub enum YUVSubmodel { |
| 362 | YCbCr, |
| 363 | /// NTSC variant. |
| 364 | YIQ, |
| 365 | /// The YUV variant used by JPEG. |
| 366 | YUVJ, |
| 367 | } |
| 368 | |
| 369 | impl fmt::Display for YUVSubmodel { |
| 370 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 371 | let name = match *self { |
| 372 | YUVSubmodel::YCbCr => "YCbCr".to_string(), |
| 373 | YUVSubmodel::YIQ => "YIQ".to_string(), |
| 374 | YUVSubmodel::YUVJ => "YUVJ".to_string(), |
| 375 | }; |
| 376 | write!(f, "{}", name) |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | /// A list of known colour models. |
| 381 | #[derive(Debug, Clone,Copy,PartialEq)] |
| 382 | pub enum ColorModel { |
| 383 | RGB(RGBSubmodel), |
| 384 | YUV(YUVSubmodel), |
| 385 | CMYK, |
| 386 | HSV, |
| 387 | LAB, |
| 388 | XYZ, |
| 389 | } |
| 390 | |
| 391 | impl ColorModel { |
| 392 | /// Returns the number of colour model components. |
| 393 | /// |
| 394 | /// The actual image may have more components e.g. alpha component. |
| 395 | pub fn get_default_components(self) -> usize { |
| 396 | match self { |
| 397 | ColorModel::CMYK => 4, |
| 398 | _ => 3, |
| 399 | } |
| 400 | } |
| 401 | /// Reports whether the current colour model is RGB. |
| 402 | pub fn is_rgb(self) -> bool { |
| 403 | match self { |
| 404 | ColorModel::RGB(_) => true, |
| 405 | _ => false, |
| 406 | } |
| 407 | } |
| 408 | /// Reports whether the current colour model is YUV. |
| 409 | pub fn is_yuv(self) -> bool { |
| 410 | match self { |
| 411 | ColorModel::YUV(_) => true, |
| 412 | _ => false, |
| 413 | } |
| 414 | } |
| 415 | /// Returns short name for the current colour mode. |
| 416 | pub fn get_short_name(self) -> &'static str { |
| 417 | match self { |
| 418 | ColorModel::RGB(_) => "rgb", |
| 419 | ColorModel::YUV(_) => "yuv", |
| 420 | ColorModel::CMYK => "cmyk", |
| 421 | ColorModel::HSV => "hsv", |
| 422 | ColorModel::LAB => "lab", |
| 423 | ColorModel::XYZ => "xyz", |
| 424 | } |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | impl fmt::Display for ColorModel { |
| 429 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 430 | let name = match *self { |
| 431 | ColorModel::RGB(fmt) => format!("RGB({})", fmt), |
| 432 | ColorModel::YUV(fmt) => format!("YUV({})", fmt), |
| 433 | ColorModel::CMYK => "CMYK".to_string(), |
| 434 | ColorModel::HSV => "HSV".to_string(), |
| 435 | ColorModel::LAB => "LAB".to_string(), |
| 436 | ColorModel::XYZ => "XYZ".to_string(), |
| 437 | }; |
| 438 | write!(f, "{}", name) |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | /// Single colourspace component definition. |
| 443 | /// |
| 444 | /// This structure defines how components of a colourspace are subsampled and where and how they are stored. |
| 445 | #[derive(Clone,Copy,PartialEq)] |
| 446 | pub struct NAPixelChromaton { |
| 447 | /// Horizontal subsampling in power of two (e.g. `0` = no subsampling, `1` = only every second value is stored). |
| 448 | pub h_ss: u8, |
| 449 | /// Vertial subsampling in power of two (e.g. `0` = no subsampling, `1` = only every second value is stored). |
| 450 | pub v_ss: u8, |
| 451 | /// A flag to signal that component is packed. |
| 452 | pub packed: bool, |
| 453 | /// Bit depth of current component. |
| 454 | pub depth: u8, |
| 455 | /// Shift for packed components. |
| 456 | pub shift: u8, |
| 457 | /// Component offset for byte-packed components. |
| 458 | pub comp_offs: u8, |
| 459 | /// The distance to the next packed element in bytes. |
| 460 | pub next_elem: u8, |
| 461 | } |
| 462 | |
| 463 | /// Flag for specifying that image data is stored big-endian in `NAPixelFormaton::`[`new`]`()`. Related to its [`be`] field. |
| 464 | /// |
| 465 | /// [`new`]: ./struct.NAPixelFormaton.html#method.new |
| 466 | /// [`be`]: ./struct.NAPixelFormaton.html#structfield.new |
| 467 | pub const FORMATON_FLAG_BE :u32 = 0x01; |
| 468 | /// Flag for specifying that image data has alpha plane in `NAPixelFormaton::`[`new`]`()`. Related to its [`alpha`] field. |
| 469 | /// |
| 470 | /// [`new`]: ./struct.NAPixelFormaton.html#method.new |
| 471 | /// [`alpha`]: ./struct.NAPixelFormaton.html#structfield.alpha |
| 472 | pub const FORMATON_FLAG_ALPHA :u32 = 0x02; |
| 473 | /// Flag for specifying that image data is stored in paletted form for `NAPixelFormaton::`[`new`]`()`. Related to its [`palette`] field. |
| 474 | /// |
| 475 | /// [`new`]: ./struct.NAPixelFormaton.html#method.new |
| 476 | /// [`palette`]: ./struct.NAPixelFormaton.html#structfield.palette |
| 477 | pub const FORMATON_FLAG_PALETTE :u32 = 0x04; |
| 478 | |
| 479 | /// The current limit on number of components in image colourspace model (including alpha component). |
| 480 | pub const MAX_CHROMATONS: usize = 5; |
| 481 | |
| 482 | /// Image colourspace representation. |
| 483 | /// |
| 484 | /// This structure includes both definitions for each component and some common definitions. |
| 485 | /// For example the format can be paletted and then components describe the palette storage format while actual data is 8-bit palette indices. |
| 486 | #[derive(Clone,Copy,PartialEq)] |
| 487 | pub struct NAPixelFormaton { |
| 488 | /// Image colour model. |
| 489 | pub model: ColorModel, |
| 490 | /// Actual number of components present. |
| 491 | pub components: u8, |
| 492 | /// Format definition for each component. |
| 493 | pub comp_info: [Option<NAPixelChromaton>; MAX_CHROMATONS], |
| 494 | /// Single pixel size for packed formats. |
| 495 | pub elem_size: u8, |
| 496 | /// A flag signalling that data is stored as big-endian. |
| 497 | pub be: bool, |
| 498 | /// A flag signalling that image has alpha component. |
| 499 | pub alpha: bool, |
| 500 | /// A flag signalling that data is paletted. |
| 501 | /// |
| 502 | /// This means that image data is stored as 8-bit indices (in the first image component) for the palette stored as second component of the image and actual palette format is described in this structure. |
| 503 | pub palette: bool, |
| 504 | } |
| 505 | |
| 506 | macro_rules! chromaton { |
| 507 | ($hs: expr, $vs: expr, $pck: expr, $d: expr, $sh: expr, $co: expr, $ne: expr) => ({ |
| 508 | Some(NAPixelChromaton{ h_ss: $hs, v_ss: $vs, packed: $pck, depth: $d, shift: $sh, comp_offs: $co, next_elem: $ne }) |
| 509 | }); |
| 510 | (yuv8; $hs: expr, $vs: expr, $co: expr) => ({ |
| 511 | Some(NAPixelChromaton{ h_ss: $hs, v_ss: $vs, packed: false, depth: 8, shift: 0, comp_offs: $co, next_elem: 1 }) |
| 512 | }); |
| 513 | (packrgb; $d: expr, $s: expr, $co: expr, $ne: expr) => ({ |
| 514 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: $d, shift: $s, comp_offs: $co, next_elem: $ne }) |
| 515 | }); |
| 516 | (pal8; $co: expr) => ({ |
| 517 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: $co, next_elem: 3 }) |
| 518 | }); |
| 519 | } |
| 520 | |
| 521 | /// Predefined format for planar 8-bit YUV with 4:2:0 subsampling. |
| 522 | pub const YUV420_FORMAT: NAPixelFormaton = NAPixelFormaton { model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 3, |
| 523 | comp_info: [ |
| 524 | chromaton!(0, 0, false, 8, 0, 0, 1), |
| 525 | chromaton!(yuv8; 1, 1, 1), |
| 526 | chromaton!(yuv8; 1, 1, 2), |
| 527 | None, None], |
| 528 | elem_size: 0, be: false, alpha: false, palette: false }; |
| 529 | |
| 530 | /// Predefined format for planar 8-bit YUV with 4:1:0 subsampling. |
| 531 | pub const YUV410_FORMAT: NAPixelFormaton = NAPixelFormaton { model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 3, |
| 532 | comp_info: [ |
| 533 | chromaton!(0, 0, false, 8, 0, 0, 1), |
| 534 | chromaton!(yuv8; 2, 2, 1), |
| 535 | chromaton!(yuv8; 2, 2, 2), |
| 536 | None, None], |
| 537 | elem_size: 0, be: false, alpha: false, palette: false }; |
| 538 | /// Predefined format for planar 8-bit YUV with 4:1:0 subsampling and alpha component. |
| 539 | pub const YUVA410_FORMAT: NAPixelFormaton = NAPixelFormaton { model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 4, |
| 540 | comp_info: [ |
| 541 | chromaton!(0, 0, false, 8, 0, 0, 1), |
| 542 | chromaton!(yuv8; 2, 2, 1), |
| 543 | chromaton!(yuv8; 2, 2, 2), |
| 544 | chromaton!(0, 0, false, 8, 0, 3, 1), |
| 545 | None], |
| 546 | elem_size: 0, be: false, alpha: true, palette: false }; |
| 547 | |
| 548 | /// Predefined format with RGB24 palette. |
| 549 | pub const PAL8_FORMAT: NAPixelFormaton = NAPixelFormaton { model: ColorModel::RGB(RGBSubmodel::RGB), components: 3, |
| 550 | comp_info: [ |
| 551 | chromaton!(pal8; 0), |
| 552 | chromaton!(pal8; 1), |
| 553 | chromaton!(pal8; 2), |
| 554 | None, None], |
| 555 | elem_size: 3, be: false, alpha: false, palette: true }; |
| 556 | |
| 557 | /// Predefined format for RGB565 packed video. |
| 558 | pub const RGB565_FORMAT: NAPixelFormaton = NAPixelFormaton { model: ColorModel::RGB(RGBSubmodel::RGB), components: 3, |
| 559 | comp_info: [ |
| 560 | chromaton!(packrgb; 5, 11, 0, 2), |
| 561 | chromaton!(packrgb; 6, 5, 0, 2), |
| 562 | chromaton!(packrgb; 5, 0, 0, 2), |
| 563 | None, None], |
| 564 | elem_size: 2, be: false, alpha: false, palette: false }; |
| 565 | |
| 566 | /// Predefined format for RGB24. |
| 567 | pub const RGB24_FORMAT: NAPixelFormaton = NAPixelFormaton { model: ColorModel::RGB(RGBSubmodel::RGB), components: 3, |
| 568 | comp_info: [ |
| 569 | chromaton!(packrgb; 8, 0, 0, 3), |
| 570 | chromaton!(packrgb; 8, 0, 1, 3), |
| 571 | chromaton!(packrgb; 8, 0, 2, 3), |
| 572 | None, None], |
| 573 | elem_size: 3, be: false, alpha: false, palette: false }; |
| 574 | |
| 575 | impl NAPixelChromaton { |
| 576 | /// Constructs a new `NAPixelChromaton` instance. |
| 577 | pub fn new(h_ss: u8, v_ss: u8, packed: bool, depth: u8, shift: u8, comp_offs: u8, next_elem: u8) -> Self { |
| 578 | Self { h_ss, v_ss, packed, depth, shift, comp_offs, next_elem } |
| 579 | } |
| 580 | /// Returns subsampling for the current component. |
| 581 | pub fn get_subsampling(self) -> (u8, u8) { (self.h_ss, self.v_ss) } |
| 582 | /// Reports whether current component is packed. |
| 583 | pub fn is_packed(self) -> bool { self.packed } |
| 584 | /// Returns bit depth of current component. |
| 585 | pub fn get_depth(self) -> u8 { self.depth } |
| 586 | /// Returns bit shift for packed component. |
| 587 | pub fn get_shift(self) -> u8 { self.shift } |
| 588 | /// Returns byte offset for packed component. |
| 589 | pub fn get_offset(self) -> u8 { self.comp_offs } |
| 590 | /// Returns byte offset to the next element of current packed component. |
| 591 | pub fn get_step(self) -> u8 { self.next_elem } |
| 592 | |
| 593 | /// Calculates the width for current component from general image width. |
| 594 | pub fn get_width(self, width: usize) -> usize { |
| 595 | (width + ((1 << self.h_ss) - 1)) >> self.h_ss |
| 596 | } |
| 597 | /// Calculates the height for current component from general image height. |
| 598 | pub fn get_height(self, height: usize) -> usize { |
| 599 | (height + ((1 << self.v_ss) - 1)) >> self.v_ss |
| 600 | } |
| 601 | /// Calculates the minimal stride for current component from general image width. |
| 602 | pub fn get_linesize(self, width: usize) -> usize { |
| 603 | let d = self.depth as usize; |
| 604 | if self.packed { |
| 605 | (self.get_width(width) * d + d - 1) >> 3 |
| 606 | } else { |
| 607 | self.get_width(width) |
| 608 | } |
| 609 | } |
| 610 | /// Calculates the required image size in pixels for current component from general image width. |
| 611 | pub fn get_data_size(self, width: usize, height: usize) -> usize { |
| 612 | let nh = (height + ((1 << self.v_ss) - 1)) >> self.v_ss; |
| 613 | self.get_linesize(width) * nh |
| 614 | } |
| 615 | } |
| 616 | |
| 617 | impl fmt::Display for NAPixelChromaton { |
| 618 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 619 | let pfmt = if self.packed { |
| 620 | let mask = ((1 << self.depth) - 1) << self.shift; |
| 621 | format!("packed(+{},{:X}, step {})", self.comp_offs, mask, self.next_elem) |
| 622 | } else { |
| 623 | format!("planar({},{})", self.comp_offs, self.next_elem) |
| 624 | }; |
| 625 | write!(f, "({}x{}, {})", self.h_ss, self.v_ss, pfmt) |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | impl NAPixelFormaton { |
| 630 | /// Constructs a new instance of `NAPixelFormaton`. |
| 631 | pub fn new(model: ColorModel, |
| 632 | comp1: Option<NAPixelChromaton>, |
| 633 | comp2: Option<NAPixelChromaton>, |
| 634 | comp3: Option<NAPixelChromaton>, |
| 635 | comp4: Option<NAPixelChromaton>, |
| 636 | comp5: Option<NAPixelChromaton>, |
| 637 | flags: u32, elem_size: u8) -> Self { |
| 638 | let mut chromatons: [Option<NAPixelChromaton>; MAX_CHROMATONS] = [None; MAX_CHROMATONS]; |
| 639 | let mut ncomp = 0; |
| 640 | let be = (flags & FORMATON_FLAG_BE) != 0; |
| 641 | let alpha = (flags & FORMATON_FLAG_ALPHA) != 0; |
| 642 | let palette = (flags & FORMATON_FLAG_PALETTE) != 0; |
| 643 | if let Some(c) = comp1 { chromatons[0] = Some(c); ncomp += 1; } |
| 644 | if let Some(c) = comp2 { chromatons[1] = Some(c); ncomp += 1; } |
| 645 | if let Some(c) = comp3 { chromatons[2] = Some(c); ncomp += 1; } |
| 646 | if let Some(c) = comp4 { chromatons[3] = Some(c); ncomp += 1; } |
| 647 | if let Some(c) = comp5 { chromatons[4] = Some(c); ncomp += 1; } |
| 648 | NAPixelFormaton { model, |
| 649 | components: ncomp, |
| 650 | comp_info: chromatons, |
| 651 | elem_size, |
| 652 | be, alpha, palette } |
| 653 | } |
| 654 | |
| 655 | /// Returns current colour model. |
| 656 | pub fn get_model(&self) -> ColorModel { self.model } |
| 657 | /// Returns the number of components. |
| 658 | pub fn get_num_comp(&self) -> usize { self.components as usize } |
| 659 | /// Returns selected component information. |
| 660 | pub fn get_chromaton(&self, idx: usize) -> Option<NAPixelChromaton> { |
| 661 | if idx < self.comp_info.len() { return self.comp_info[idx]; } |
| 662 | None |
| 663 | } |
| 664 | /// Reports whether the packing format is big-endian. |
| 665 | pub fn is_be(self) -> bool { self.be } |
| 666 | /// Reports whether colourspace has alpha component. |
| 667 | pub fn has_alpha(self) -> bool { self.alpha } |
| 668 | /// Reports whether this is paletted format. |
| 669 | pub fn is_paletted(self) -> bool { self.palette } |
| 670 | /// Returns single packed pixel size. |
| 671 | pub fn get_elem_size(self) -> u8 { self.elem_size } |
| 672 | /// Reports whether the format is not packed. |
| 673 | pub fn is_unpacked(&self) -> bool { |
| 674 | if self.palette { return false; } |
| 675 | for chr in self.comp_info.iter() { |
| 676 | if let Some(ref chromaton) = chr { |
| 677 | if chromaton.is_packed() { return false; } |
| 678 | } |
| 679 | } |
| 680 | true |
| 681 | } |
| 682 | /// Returns the maximum component bit depth. |
| 683 | pub fn get_max_depth(&self) -> u8 { |
| 684 | let mut mdepth = 0; |
| 685 | for chr in self.comp_info.iter() { |
| 686 | if let Some(ref chromaton) = chr { |
| 687 | mdepth = mdepth.max(chromaton.depth); |
| 688 | } |
| 689 | } |
| 690 | mdepth |
| 691 | } |
| 692 | /// Returns the total amount of bits needed for components. |
| 693 | pub fn get_total_depth(&self) -> u8 { |
| 694 | let mut depth = 0; |
| 695 | for chr in self.comp_info.iter() { |
| 696 | if let Some(ref chromaton) = chr { |
| 697 | depth += chromaton.depth; |
| 698 | } |
| 699 | } |
| 700 | depth |
| 701 | } |
| 702 | /// Returns the maximum component subsampling. |
| 703 | pub fn get_max_subsampling(&self) -> u8 { |
| 704 | let mut ssamp = 0; |
| 705 | for chr in self.comp_info.iter() { |
| 706 | if let Some(ref chromaton) = chr { |
| 707 | let (ss_v, ss_h) = chromaton.get_subsampling(); |
| 708 | ssamp = ssamp.max(ss_v).max(ss_h); |
| 709 | } |
| 710 | } |
| 711 | ssamp |
| 712 | } |
| 713 | #[allow(clippy::cognitive_complexity)] |
| 714 | /// Returns a short string description of the format if possible. |
| 715 | pub fn to_short_string(&self) -> Option<String> { |
| 716 | match self.model { |
| 717 | ColorModel::RGB(_) => { |
| 718 | if self.is_paletted() { |
| 719 | if *self == PAL8_FORMAT { |
| 720 | return Some("pal8".to_string()); |
| 721 | } else { |
| 722 | return None; |
| 723 | } |
| 724 | } |
| 725 | let mut name = [b'z'; 4]; |
| 726 | let planar = self.is_unpacked(); |
| 727 | |
| 728 | let mut start_off = 0; |
| 729 | let mut start_shift = 0; |
| 730 | let mut use_shift = true; |
| 731 | for comp in self.comp_info.iter() { |
| 732 | if let Some(comp) = comp { |
| 733 | start_off = start_off.min(comp.comp_offs); |
| 734 | start_shift = start_shift.min(comp.shift); |
| 735 | if comp.comp_offs != 0 { use_shift = false; } |
| 736 | } |
| 737 | } |
| 738 | for component in 0..(self.components as usize) { |
| 739 | for (comp, cname) in self.comp_info.iter().zip(b"rgba".iter()) { |
| 740 | if let Some(comp) = comp { |
| 741 | if use_shift { |
| 742 | if comp.shift == start_shift { |
| 743 | name[component] = *cname; |
| 744 | start_shift += comp.depth; |
| 745 | } |
| 746 | } else if comp.comp_offs == start_off { |
| 747 | name[component] = *cname; |
| 748 | if planar { |
| 749 | start_off += 1; |
| 750 | } else { |
| 751 | start_off += (comp.depth + 7) / 8; |
| 752 | } |
| 753 | } |
| 754 | } |
| 755 | } |
| 756 | } |
| 757 | |
| 758 | for (comp, cname) in self.comp_info.iter().zip(b"rgba".iter()) { |
| 759 | if let Some(comp) = comp { |
| 760 | name[comp.comp_offs as usize] = *cname; |
| 761 | } else { |
| 762 | break; |
| 763 | } |
| 764 | } |
| 765 | let mut name = String::from_utf8(name[..self.components as usize].to_vec()).unwrap(); |
| 766 | let depth = self.get_total_depth(); |
| 767 | if depth == 15 || depth == 16 { |
| 768 | for c in self.comp_info.iter() { |
| 769 | if let Some(comp) = c { |
| 770 | name.push((b'0' + comp.depth) as char); |
| 771 | } else { |
| 772 | break; |
| 773 | } |
| 774 | } |
| 775 | name += if self.be { "be" } else { "le" }; |
| 776 | return Some(name); |
| 777 | } |
| 778 | if depth == 24 || depth != 8 * self.components { |
| 779 | name += depth.to_string().as_str(); |
| 780 | } |
| 781 | if planar { |
| 782 | name.push('p'); |
| 783 | } |
| 784 | if self.get_max_depth() > 8 { |
| 785 | name += if self.be { "be" } else { "le" }; |
| 786 | } |
| 787 | Some(name) |
| 788 | }, |
| 789 | ColorModel::YUV(_) => { |
| 790 | let max_depth = self.get_max_depth(); |
| 791 | if self.get_total_depth() != max_depth * self.components { |
| 792 | return None; |
| 793 | } |
| 794 | if self.components < 3 { |
| 795 | if self.components == 1 && max_depth == 8 { |
| 796 | return Some("y8".to_string()); |
| 797 | } |
| 798 | if self.components == 2 && self.alpha && max_depth == 8 { |
| 799 | return Some("y8a".to_string()); |
| 800 | } |
| 801 | return None; |
| 802 | } |
| 803 | let cu = self.comp_info[1].unwrap(); |
| 804 | let cv = self.comp_info[2].unwrap(); |
| 805 | if cu.h_ss != cv.h_ss || cu.v_ss != cv.v_ss || cu.h_ss > 2 || cu.v_ss > 2 { |
| 806 | return None; |
| 807 | } |
| 808 | let mut name = "yuv".to_string(); |
| 809 | if self.alpha { |
| 810 | name.push('a'); |
| 811 | } |
| 812 | name.push('4'); |
| 813 | let sch = b"421"[cu.h_ss as usize]; |
| 814 | let tch = if cu.v_ss > 1 { b'0' } else { sch }; |
| 815 | name.push(sch as char); |
| 816 | name.push(tch as char); |
| 817 | if self.is_unpacked() { |
| 818 | name.push('p'); |
| 819 | } |
| 820 | if max_depth != 8 { |
| 821 | name += max_depth.to_string().as_str(); |
| 822 | } |
| 823 | Some(name) |
| 824 | }, |
| 825 | _ => None, |
| 826 | } |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | impl fmt::Display for NAPixelFormaton { |
| 831 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 832 | let end = if self.be { "BE" } else { "LE" }; |
| 833 | let palstr = if self.palette { "palette " } else { "" }; |
| 834 | let astr = if self.alpha { "alpha " } else { "" }; |
| 835 | let mut str = format!("Formaton for {} ({}{}elem {} size {}): ", self.model, palstr, astr,end, self.elem_size); |
| 836 | for i in 0..self.comp_info.len() { |
| 837 | if let Some(chr) = self.comp_info[i] { |
| 838 | str = format!("{} {}", str, chr); |
| 839 | } |
| 840 | } |
| 841 | write!(f, "[{}]", str) |
| 842 | } |
| 843 | } |
| 844 | |
| 845 | fn parse_rgb_format(s: &str) -> Result<NAPixelFormaton, FormatParseError> { |
| 846 | let mut order = [0; 4]; |
| 847 | let mut is_be = s.ends_with("be"); |
| 848 | let mut has_alpha = false; |
| 849 | let mut pstate = 0; |
| 850 | let mut bits = 0; |
| 851 | let mut bits_start = 0; |
| 852 | for (i, ch) in s.chars().enumerate() { |
| 853 | match pstate { |
| 854 | 0 => { |
| 855 | if i > 4 { return Err(FormatParseError {}); } |
| 856 | match ch { |
| 857 | 'R' | 'r' => { order[0] = i; }, |
| 858 | 'G' | 'g' => { order[1] = i; }, |
| 859 | 'B' | 'b' => { order[2] = i; }, |
| 860 | 'A' | 'a' => { order[3] = i; has_alpha = true; }, |
| 861 | '0'..='9' => { |
| 862 | pstate = 1; bits_start = i; |
| 863 | bits = u32::from((ch as u8) - b'0'); |
| 864 | }, |
| 865 | _ => return Err(FormatParseError {}), |
| 866 | }; |
| 867 | }, |
| 868 | 1 => { |
| 869 | if i > 4 + bits_start { return Err(FormatParseError {}); } |
| 870 | match ch { |
| 871 | '0'..='9' => { |
| 872 | bits = (bits * 10) + u32::from((ch as u8) - b'0'); |
| 873 | }, |
| 874 | 'B' | 'b' => { pstate = 2; } |
| 875 | 'L' | 'l' => { pstate = 2; is_be = false; } |
| 876 | _ => return Err(FormatParseError {}), |
| 877 | } |
| 878 | }, |
| 879 | 2 => { |
| 880 | if ch != 'e' && ch != 'E' { return Err(FormatParseError {}); } |
| 881 | pstate = 3; |
| 882 | }, |
| 883 | _ => return Err(FormatParseError {}), |
| 884 | }; |
| 885 | } |
| 886 | let components: u8 = if has_alpha { 4 } else { 3 }; |
| 887 | for el in order.iter() { |
| 888 | if *el >= (components as usize) { |
| 889 | return Err(FormatParseError {}); |
| 890 | } |
| 891 | } |
| 892 | if order[0] == order[1] || order[0] == order[2] || order[1] == order[2] { |
| 893 | return Err(FormatParseError {}); |
| 894 | } |
| 895 | if has_alpha && order[0..3].contains(&order[3]) { |
| 896 | return Err(FormatParseError {}); |
| 897 | } |
| 898 | let mut chromatons = [None; 5]; |
| 899 | let elem_size = match bits { |
| 900 | 0 | 24 => { |
| 901 | for (chro, ord) in chromatons.iter_mut().take(components as usize).zip(order.iter()) { |
| 902 | *chro = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: *ord as u8, next_elem: components }); |
| 903 | } |
| 904 | components |
| 905 | }, |
| 906 | 555 => { |
| 907 | let rshift = (order[0] * 5) as u8; |
| 908 | let gshift = (order[1] * 5) as u8; |
| 909 | let bshift = (order[2] * 5) as u8; |
| 910 | chromatons[0] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: rshift, comp_offs: 0, next_elem: 2 }); |
| 911 | chromatons[1] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: gshift, comp_offs: 0, next_elem: 2 }); |
| 912 | chromatons[2] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: bshift, comp_offs: 0, next_elem: 2 }); |
| 913 | if has_alpha { return Err(FormatParseError {}); } |
| 914 | 2 |
| 915 | }, |
| 916 | 565 => { |
| 917 | let mut offs = [0; 3]; |
| 918 | for (ord, off) in order.iter().zip(offs.iter_mut()) { |
| 919 | *off = (*ord * 5) as u8; |
| 920 | } |
| 921 | match order[1] { |
| 922 | 0 => { offs[0] += 1; offs[2] += 1; }, |
| 923 | 1 => { for el in offs.iter_mut() { if *el == 10 { *el += 1; break; } } }, |
| 924 | _ => {}, |
| 925 | }; |
| 926 | chromatons[0] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: offs[0], comp_offs: 0, next_elem: 2 }); |
| 927 | chromatons[1] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 6, shift: offs[1], comp_offs: 0, next_elem: 2 }); |
| 928 | chromatons[2] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: offs[2], comp_offs: 0, next_elem: 2 }); |
| 929 | if has_alpha { return Err(FormatParseError {}); } |
| 930 | 2 |
| 931 | }, |
| 932 | 5551 => { |
| 933 | let mut offs = [0; 4]; |
| 934 | let depth = [ 5, 5, 5, 1 ]; |
| 935 | let mut cur_off = 0; |
| 936 | for comp in 0..4 { |
| 937 | for (off, ord) in offs.iter_mut().zip(order.iter()) { |
| 938 | if *ord == comp { |
| 939 | *off = cur_off; |
| 940 | cur_off += depth[comp]; |
| 941 | break; |
| 942 | } |
| 943 | } |
| 944 | } |
| 945 | chromatons[0] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: offs[0], comp_offs: 0, next_elem: 2 }); |
| 946 | chromatons[1] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: offs[1], comp_offs: 0, next_elem: 2 }); |
| 947 | chromatons[2] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: offs[2], comp_offs: 0, next_elem: 2 }); |
| 948 | chromatons[3] = Some(NAPixelChromaton { h_ss: 0, v_ss: 0, packed: true, depth: 1, shift: offs[3], comp_offs: 0, next_elem: 2 }); |
| 949 | if !has_alpha { return Err(FormatParseError {}); } |
| 950 | 2 |
| 951 | }, |
| 952 | _ => return Err(FormatParseError {}), |
| 953 | }; |
| 954 | Ok(NAPixelFormaton { model: ColorModel::RGB(RGBSubmodel::RGB), |
| 955 | components, |
| 956 | comp_info: chromatons, |
| 957 | elem_size, |
| 958 | be: is_be, alpha: has_alpha, palette: false }) |
| 959 | } |
| 960 | |
| 961 | fn parse_yuv_format(s: &str) -> Result<NAPixelFormaton, FormatParseError> { |
| 962 | match s { |
| 963 | "y8" | "y400" | "gray" => { |
| 964 | return Ok(NAPixelFormaton { |
| 965 | model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 1, |
| 966 | comp_info: [ |
| 967 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 0, next_elem: 1 }), |
| 968 | None, None, None, None], |
| 969 | elem_size: 1, be: true, alpha: false, palette: false }); |
| 970 | }, |
| 971 | "y8a" | "y400a" | "graya" => { |
| 972 | return Ok(NAPixelFormaton { |
| 973 | model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 2, |
| 974 | comp_info: [ |
| 975 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 0, next_elem: 2 }), |
| 976 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 1, next_elem: 2 }), |
| 977 | None, None, None], |
| 978 | elem_size: 1, be: true, alpha: true, palette: false }); |
| 979 | }, |
| 980 | "uyvy" | "y422" => { |
| 981 | return Ok(NAPixelFormaton { |
| 982 | model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 3, |
| 983 | comp_info: [ |
| 984 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 1, next_elem: 2 }), |
| 985 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 0, next_elem: 4 }), |
| 986 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 2, next_elem: 4 }), |
| 987 | None, None], |
| 988 | elem_size: 4, be: false, alpha: false, palette: false }); |
| 989 | }, |
| 990 | "yuy2" | "yuyv" | "v422" => { |
| 991 | return Ok(NAPixelFormaton { |
| 992 | model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 3, |
| 993 | comp_info: [ |
| 994 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 0, next_elem: 2 }), |
| 995 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 1, next_elem: 4 }), |
| 996 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 3, next_elem: 4 }), |
| 997 | None, None], |
| 998 | elem_size: 4, be: false, alpha: false, palette: false }); |
| 999 | }, |
| 1000 | "yvyu" => { |
| 1001 | return Ok(NAPixelFormaton { |
| 1002 | model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 3, |
| 1003 | comp_info: [ |
| 1004 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 0, next_elem: 2 }), |
| 1005 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 3, next_elem: 4 }), |
| 1006 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 1, next_elem: 4 }), |
| 1007 | None, None], |
| 1008 | elem_size: 4, be: false, alpha: false, palette: false }); |
| 1009 | }, |
| 1010 | "vyuy" => { |
| 1011 | return Ok(NAPixelFormaton { |
| 1012 | model: ColorModel::YUV(YUVSubmodel::YUVJ), components: 3, |
| 1013 | comp_info: [ |
| 1014 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 1, next_elem: 2 }), |
| 1015 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 2, next_elem: 4 }), |
| 1016 | Some(NAPixelChromaton{ h_ss: 1, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 0, next_elem: 4 }), |
| 1017 | None, None], |
| 1018 | elem_size: 4, be: false, alpha: false, palette: false }); |
| 1019 | }, |
| 1020 | _ => {}, |
| 1021 | }; |
| 1022 | if !s.starts_with("yuv") { |
| 1023 | return Err(FormatParseError {}); |
| 1024 | } |
| 1025 | let has_alpha = s.starts_with("yuva"); |
| 1026 | let components: u8 = if has_alpha { 4 } else { 3 }; |
| 1027 | let mut is_planar = false; |
| 1028 | let mut format = 0; |
| 1029 | let mut parse_end = components as usize; |
| 1030 | for ch in s.chars().skip(components as usize) { |
| 1031 | parse_end += 1; |
| 1032 | if ch >= '0' && ch <= '9' { |
| 1033 | format = format * 10 + u32::from((ch as u8) - b'0'); |
| 1034 | if format > 444 { return Err(FormatParseError {}); } |
| 1035 | } else { |
| 1036 | is_planar = ch == 'p'; |
| 1037 | break; |
| 1038 | } |
| 1039 | } |
| 1040 | if format == 0 { return Err(FormatParseError {}); } |
| 1041 | let depth = if s.len() == parse_end { 8 } else { |
| 1042 | let mut val = 0; |
| 1043 | for ch in s.chars().skip(parse_end) { |
| 1044 | if ch >= '0' && ch <= '9' { |
| 1045 | val = val * 10 + ((ch as u8) - b'0'); |
| 1046 | if val > 16 { return Err(FormatParseError {}); } |
| 1047 | } else { |
| 1048 | break; |
| 1049 | } |
| 1050 | } |
| 1051 | val |
| 1052 | }; |
| 1053 | if depth == 0 { return Err(FormatParseError {}); } |
| 1054 | let is_be = s.ends_with("be"); |
| 1055 | |
| 1056 | let mut chromatons = [None; 5]; |
| 1057 | let next_elem = if is_planar { (depth + 7) >> 3 } else { |
| 1058 | components * ((depth + 7) >> 3) }; |
| 1059 | let subsamp: [[u8; 2]; 4] = match format { |
| 1060 | 410 => [[0, 0], [2, 2], [2, 2], [0, 0]], |
| 1061 | 411 => [[0, 0], [2, 0], [2, 0], [0, 0]], |
| 1062 | 420 => [[0, 0], [1, 1], [1, 1], [0, 0]], |
| 1063 | 422 => [[0, 0], [1, 0], [1, 0], [0, 0]], |
| 1064 | 440 => [[0, 0], [0, 1], [0, 1], [0, 0]], |
| 1065 | 444 => [[0, 0], [0, 0], [0, 0], [0, 0]], |
| 1066 | _ => return Err(FormatParseError {}), |
| 1067 | }; |
| 1068 | for (chro, ss) in chromatons.iter_mut().take(components as usize).zip(subsamp.iter()) { |
| 1069 | *chro = Some(NAPixelChromaton{ h_ss: ss[0], v_ss: ss[1], packed: !is_planar, depth, shift: 0, comp_offs: next_elem, next_elem }); |
| 1070 | } |
| 1071 | Ok(NAPixelFormaton { model: ColorModel::YUV(YUVSubmodel::YUVJ), |
| 1072 | components, |
| 1073 | comp_info: chromatons, |
| 1074 | elem_size: components, |
| 1075 | be: is_be, alpha: has_alpha, palette: false }) |
| 1076 | } |
| 1077 | |
| 1078 | impl FromStr for NAPixelFormaton { |
| 1079 | type Err = FormatParseError; |
| 1080 | |
| 1081 | #[allow(clippy::single_match)] |
| 1082 | fn from_str(s: &str) -> Result<Self, Self::Err> { |
| 1083 | match s { |
| 1084 | "pal8" => return Ok(PAL8_FORMAT), |
| 1085 | _ => {}, |
| 1086 | } |
| 1087 | let ret = parse_rgb_format(s); |
| 1088 | if ret.is_ok() { |
| 1089 | return ret; |
| 1090 | } |
| 1091 | parse_yuv_format(s) |
| 1092 | } |
| 1093 | } |
| 1094 | |
| 1095 | #[cfg(test)] |
| 1096 | mod test { |
| 1097 | use super::*; |
| 1098 | |
| 1099 | #[test] |
| 1100 | fn test_fmt() { |
| 1101 | println!("{}", SND_S16_FORMAT); |
| 1102 | println!("{}", SND_U8_FORMAT); |
| 1103 | println!("{}", SND_F32P_FORMAT); |
| 1104 | assert_eq!(SND_U8_FORMAT.to_short_string(), "u8"); |
| 1105 | assert_eq!(SND_F32P_FORMAT.to_short_string(), "f32lep"); |
| 1106 | let s16fmt = SND_S16_FORMAT.to_short_string(); |
| 1107 | assert_eq!(NASoniton::from_str(s16fmt.as_str()).unwrap(), SND_S16_FORMAT); |
| 1108 | println!("formaton yuv- {}", YUV420_FORMAT); |
| 1109 | println!("formaton pal- {}", PAL8_FORMAT); |
| 1110 | println!("formaton rgb565- {}", RGB565_FORMAT); |
| 1111 | |
| 1112 | let pfmt = NAPixelFormaton::from_str("rgb24").unwrap(); |
| 1113 | assert!(pfmt == RGB24_FORMAT); |
| 1114 | let pfmt = "gbra"; |
| 1115 | assert_eq!(pfmt, NAPixelFormaton::from_str("gbra").unwrap().to_short_string().unwrap()); |
| 1116 | let pfmt = NAPixelFormaton::from_str("yuv420").unwrap(); |
| 1117 | println!("parsed pfmt as {} / {:?}", pfmt, pfmt.to_short_string()); |
| 1118 | let pfmt = NAPixelFormaton::from_str("yuva420p12").unwrap(); |
| 1119 | println!("parsed pfmt as {} / {:?}", pfmt, pfmt.to_short_string()); |
| 1120 | |
| 1121 | assert_eq!(RGB565_FORMAT.to_short_string().unwrap(), "bgr565le"); |
| 1122 | assert_eq!(PAL8_FORMAT.to_short_string().unwrap(), "pal8"); |
| 1123 | assert_eq!(YUV420_FORMAT.to_short_string().unwrap(), "yuv422p"); |
| 1124 | assert_eq!(YUVA410_FORMAT.to_short_string().unwrap(), "yuva410p"); |
| 1125 | } |
| 1126 | } |