| 1 | use nihav_core::formats::*; |
| 2 | use nihav_core::frame::*; |
| 3 | use nihav_core::codecs::*; |
| 4 | use nihav_codec_support::dsp::mdct::IMDCT; |
| 5 | use nihav_codec_support::dsp::window::*; |
| 6 | use nihav_core::io::bitreader::*; |
| 7 | use nihav_core::io::codebook::*; |
| 8 | use std::fmt; |
| 9 | use nihav_core::io::intcode::*; |
| 10 | use std::mem; |
| 11 | use std::ptr; |
| 12 | use std::str::FromStr; |
| 13 | use std::f32::consts; |
| 14 | |
| 15 | #[allow(non_camel_case_types)] |
| 16 | #[derive(Clone,Copy,PartialEq)] |
| 17 | enum M4AType { |
| 18 | None, |
| 19 | Main, |
| 20 | LC, |
| 21 | SSR, |
| 22 | LTP, |
| 23 | SBR, |
| 24 | Scalable, |
| 25 | TwinVQ, |
| 26 | CELP, |
| 27 | HVXC, |
| 28 | TTSI, |
| 29 | MainSynth, |
| 30 | WavetableSynth, |
| 31 | GeneralMIDI, |
| 32 | Algorithmic, |
| 33 | ER_AAC_LC, |
| 34 | ER_AAC_LTP, |
| 35 | ER_AAC_Scalable, |
| 36 | ER_TwinVQ, |
| 37 | ER_BSAC, |
| 38 | ER_AAC_LD, |
| 39 | ER_CELP, |
| 40 | ER_HVXC, |
| 41 | ER_HILN, |
| 42 | ER_Parametric, |
| 43 | SSC, |
| 44 | PS, |
| 45 | MPEGSurround, |
| 46 | Layer1, |
| 47 | Layer2, |
| 48 | Layer3, |
| 49 | DST, |
| 50 | ALS, |
| 51 | SLS, |
| 52 | SLSNonCore, |
| 53 | ER_AAC_ELD, |
| 54 | SMRSimple, |
| 55 | SMRMain, |
| 56 | Reserved, |
| 57 | Unknown, |
| 58 | } |
| 59 | |
| 60 | const M4A_TYPES: &[M4AType] = &[ |
| 61 | M4AType::None, M4AType::Main, M4AType::LC, M4AType::SSR, |
| 62 | M4AType::LTP, M4AType::SBR, M4AType::Scalable, M4AType::TwinVQ, |
| 63 | M4AType::CELP, M4AType::HVXC, M4AType::Reserved, M4AType::Reserved, |
| 64 | M4AType::TTSI, M4AType::MainSynth, M4AType::WavetableSynth, M4AType::GeneralMIDI, |
| 65 | M4AType::Algorithmic, M4AType::ER_AAC_LC, M4AType::Reserved, M4AType::ER_AAC_LTP, |
| 66 | M4AType::ER_AAC_Scalable, M4AType::ER_TwinVQ, M4AType::ER_BSAC, M4AType::ER_AAC_LD, |
| 67 | M4AType::ER_CELP, M4AType::ER_HVXC, M4AType::ER_HILN, M4AType::ER_Parametric, |
| 68 | M4AType::SSC, M4AType::PS, M4AType::MPEGSurround, M4AType::Reserved /*escape*/, |
| 69 | M4AType::Layer1, M4AType::Layer2, M4AType::Layer3, M4AType::DST, |
| 70 | M4AType::ALS, M4AType::SLS, M4AType::SLSNonCore, M4AType::ER_AAC_ELD, |
| 71 | M4AType::SMRSimple, M4AType::SMRMain, |
| 72 | ]; |
| 73 | const M4A_TYPE_NAMES: &[&str] = &[ |
| 74 | "None", "AAC Main", "AAC LC", "AAC SSR", "AAC LTP", "SBR", "AAC Scalable", "TwinVQ", "CELP", "HVXC", |
| 75 | /*"(reserved10)", "(reserved11)", */ "TTSI", |
| 76 | "Main synthetic", "Wavetable synthesis", "General MIDI", "Algorithmic Synthesis and Audio FX", |
| 77 | "ER AAC LC", /*"(reserved18)",*/ "ER AAC LTP", "ER AAC Scalable", "ER TwinVQ", "ER BSAC", "ER AAC LD", |
| 78 | "ER CELP", "ER HVXC", "ER HILN", "ER Parametric", "SSC", "PS", "MPEG Surround", /*"(escape)",*/ |
| 79 | "Layer-1", "Layer-2", "Layer-3", "DST", "ALS", "SLS", "SLS non-core", "ER AAC ELD", "SMR Simple", "SMR Main", |
| 80 | "(reserved)", "(unknown)", |
| 81 | ]; |
| 82 | |
| 83 | impl fmt::Display for M4AType { |
| 84 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 85 | write!(f, "{}", M4A_TYPE_NAMES[*self as usize]) |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | const AAC_SAMPLE_RATES: [u32; 16] = [ |
| 90 | 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, |
| 91 | 16000, 12000, 11025, 8000, 7350, 0, 0, 0 |
| 92 | ]; |
| 93 | |
| 94 | const AAC_CHANNELS: [usize; 8] = [ 0, 1, 2, 3, 4, 5, 6, 8 ]; |
| 95 | |
| 96 | struct M4AInfo { |
| 97 | otype: M4AType, |
| 98 | srate: u32, |
| 99 | channels: usize, |
| 100 | samples: usize, |
| 101 | sbr_ps_info: Option<(u32, usize)>, |
| 102 | sbr_present: bool, |
| 103 | ps_present: bool, |
| 104 | } |
| 105 | |
| 106 | impl M4AInfo { |
| 107 | fn new() -> Self { |
| 108 | Self { |
| 109 | otype: M4AType::None, |
| 110 | srate: 0, |
| 111 | channels: 0, |
| 112 | samples: 0, |
| 113 | sbr_ps_info: Option::None, |
| 114 | sbr_present: false, |
| 115 | ps_present: false, |
| 116 | } |
| 117 | } |
| 118 | fn read_object_type(br: &mut BitReader) -> DecoderResult<M4AType> { |
| 119 | let otypeidx; |
| 120 | if br.peek(5) == 31 { |
| 121 | br.skip(5)?; |
| 122 | otypeidx = (br.read(6)? as usize) + 32; |
| 123 | } else { |
| 124 | otypeidx = br.read(5)? as usize; |
| 125 | } |
| 126 | if otypeidx >= M4A_TYPES.len() { |
| 127 | Ok(M4AType::Unknown) |
| 128 | } else { |
| 129 | Ok(M4A_TYPES[otypeidx]) |
| 130 | } |
| 131 | } |
| 132 | fn read_sampling_frequency(br: &mut BitReader) -> DecoderResult<u32> { |
| 133 | if br.peek(4) == 15 { |
| 134 | let srate = br.read(24)?; |
| 135 | Ok(srate) |
| 136 | } else { |
| 137 | let srate_idx = br.read(4)? as usize; |
| 138 | Ok(AAC_SAMPLE_RATES[srate_idx]) |
| 139 | } |
| 140 | } |
| 141 | fn read_channel_config(br: &mut BitReader) -> DecoderResult<usize> { |
| 142 | let chidx = br.read(4)? as usize; |
| 143 | if chidx < AAC_CHANNELS.len() { |
| 144 | Ok(AAC_CHANNELS[chidx]) |
| 145 | } else { |
| 146 | Ok(chidx) |
| 147 | } |
| 148 | } |
| 149 | fn read(&mut self, src: &[u8]) -> DecoderResult<()> { |
| 150 | let mut br = BitReader::new(src, BitReaderMode::BE); |
| 151 | self.otype = Self::read_object_type(&mut br)?; |
| 152 | self.srate = Self::read_sampling_frequency(&mut br)?; |
| 153 | validate!(self.srate > 0); |
| 154 | self.channels = Self::read_channel_config(&mut br)?; |
| 155 | |
| 156 | if (self.otype == M4AType::SBR) || (self.otype == M4AType::PS) { |
| 157 | let ext_srate = Self::read_sampling_frequency(&mut br)?; |
| 158 | self.otype = Self::read_object_type(&mut br)?; |
| 159 | let ext_chans; |
| 160 | if self.otype == M4AType::ER_BSAC { |
| 161 | ext_chans = Self::read_channel_config(&mut br)?; |
| 162 | } else { |
| 163 | ext_chans = 0; |
| 164 | } |
| 165 | self.sbr_ps_info = Some((ext_srate, ext_chans)); |
| 166 | } |
| 167 | |
| 168 | match self.otype { |
| 169 | M4AType::Main | M4AType::LC | M4AType::SSR | M4AType::Scalable | M4AType::TwinVQ | |
| 170 | M4AType::ER_AAC_LC | M4AType::ER_AAC_LTP | M4AType::ER_AAC_Scalable | M4AType::ER_TwinVQ | |
| 171 | M4AType::ER_BSAC | M4AType::ER_AAC_LD => { |
| 172 | // GASpecificConfig |
| 173 | let short_frame = br.read_bool()?; |
| 174 | self.samples = if short_frame { 960 } else { 1024 }; |
| 175 | let depends_on_core = br.read_bool()?; |
| 176 | if depends_on_core { |
| 177 | let _delay = br.read(14)?; |
| 178 | } |
| 179 | let extension_flag = br.read_bool()?; |
| 180 | if self.channels == 0 { |
| 181 | unimplemented!("program config element"); |
| 182 | } |
| 183 | if (self.otype == M4AType::Scalable) || (self.otype == M4AType::ER_AAC_Scalable) { |
| 184 | let _layer = br.read(3)?; |
| 185 | } |
| 186 | if extension_flag { |
| 187 | if self.otype == M4AType::ER_BSAC { |
| 188 | let _num_subframes = br.read(5)? as usize; |
| 189 | let _layer_length = br.read(11)?; |
| 190 | } |
| 191 | if (self.otype == M4AType::ER_AAC_LC) || |
| 192 | (self.otype == M4AType::ER_AAC_LTP) || |
| 193 | (self.otype == M4AType::ER_AAC_Scalable) || |
| 194 | (self.otype == M4AType::ER_AAC_LD) { |
| 195 | let _section_data_resilience = br.read_bool()?; |
| 196 | let _scalefactors_resilience = br.read_bool()?; |
| 197 | let _spectral_data_resilience = br.read_bool()?; |
| 198 | } |
| 199 | let extension_flag3 = br.read_bool()?; |
| 200 | if extension_flag3 { |
| 201 | unimplemented!("version3 extensions"); |
| 202 | } |
| 203 | } |
| 204 | }, |
| 205 | M4AType::CELP => { unimplemented!("CELP config"); }, |
| 206 | M4AType::HVXC => { unimplemented!("HVXC config"); }, |
| 207 | M4AType::TTSI => { unimplemented!("TTS config"); }, |
| 208 | M4AType::MainSynth | M4AType::WavetableSynth | M4AType::GeneralMIDI | M4AType::Algorithmic => { unimplemented!("structured audio config"); }, |
| 209 | M4AType::ER_CELP => { unimplemented!("ER CELP config"); }, |
| 210 | M4AType::ER_HVXC => { unimplemented!("ER HVXC config"); }, |
| 211 | M4AType::ER_HILN | M4AType::ER_Parametric => { unimplemented!("parametric config"); }, |
| 212 | M4AType::SSC => { unimplemented!("SSC config"); }, |
| 213 | M4AType::MPEGSurround => { |
| 214 | br.skip(1)?; // sacPayloadEmbedding |
| 215 | unimplemented!("MPEG Surround config"); |
| 216 | }, |
| 217 | M4AType::Layer1 | M4AType::Layer2 | M4AType::Layer3 => { unimplemented!("MPEG Layer 1/2/3 config"); }, |
| 218 | M4AType::DST => { unimplemented!("DST config"); }, |
| 219 | M4AType::ALS => { |
| 220 | br.skip(5)?; // fillBits |
| 221 | unimplemented!("ALS config"); |
| 222 | }, |
| 223 | M4AType::SLS | M4AType::SLSNonCore => { unimplemented!("SLS config"); }, |
| 224 | M4AType::ER_AAC_ELD => { unimplemented!("ELD config"); }, |
| 225 | M4AType::SMRSimple | M4AType::SMRMain => { unimplemented!("symbolic music config"); }, |
| 226 | _ => {}, |
| 227 | }; |
| 228 | match self.otype { |
| 229 | M4AType::ER_AAC_LC | M4AType::ER_AAC_LTP | M4AType::ER_AAC_Scalable | M4AType::ER_TwinVQ | |
| 230 | M4AType::ER_BSAC | M4AType::ER_AAC_LD | M4AType::ER_CELP | M4AType::ER_HVXC | |
| 231 | M4AType::ER_HILN | M4AType::ER_Parametric | M4AType::ER_AAC_ELD => { |
| 232 | let ep_config = br.read(2)?; |
| 233 | if (ep_config == 2) || (ep_config == 3) { |
| 234 | unimplemented!("error protection config"); |
| 235 | } |
| 236 | if ep_config == 3 { |
| 237 | let direct_mapping = br.read_bool()?; |
| 238 | validate!(direct_mapping); |
| 239 | } |
| 240 | }, |
| 241 | _ => {}, |
| 242 | }; |
| 243 | if self.sbr_ps_info.is_some() && (br.left() >= 16) { |
| 244 | let sync = br.read(11)?; |
| 245 | if sync == 0x2B7 { |
| 246 | let ext_otype = Self::read_object_type(&mut br)?; |
| 247 | if ext_otype == M4AType::SBR { |
| 248 | self.sbr_present = br.read_bool()?; |
| 249 | if self.sbr_present { |
| 250 | let _ext_srate = Self::read_sampling_frequency(&mut br)?; |
| 251 | if br.left() >= 12 { |
| 252 | let sync = br.read(11)?; |
| 253 | if sync == 0x548 { |
| 254 | self.ps_present = br.read_bool()?; |
| 255 | } |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | if ext_otype == M4AType::PS { |
| 260 | self.sbr_present = br.read_bool()?; |
| 261 | if self.sbr_present { |
| 262 | let _ext_srate = Self::read_sampling_frequency(&mut br)?; |
| 263 | } |
| 264 | let _ext_channels = br.read(4)?; |
| 265 | } |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | Ok(()) |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | impl fmt::Display for M4AInfo { |
| 274 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 275 | write!(f, "MPEG 4 Audio {}, {} Hz, {} channels, {} samples per frame", |
| 276 | self.otype, self.srate, self.channels, self.samples) |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | const MAX_WINDOWS: usize = 8; |
| 281 | const MAX_SFBS: usize = 64; |
| 282 | |
| 283 | #[derive(Clone,Copy)] |
| 284 | struct ICSInfo { |
| 285 | window_sequence: u8, |
| 286 | prev_window_sequence: u8, |
| 287 | window_shape: bool, |
| 288 | prev_window_shape: bool, |
| 289 | scale_factor_grouping: [bool; MAX_WINDOWS], |
| 290 | group_start: [usize; MAX_WINDOWS], |
| 291 | window_groups: usize, |
| 292 | num_windows: usize, |
| 293 | max_sfb: usize, |
| 294 | predictor_data: Option<LTPData>, |
| 295 | long_win: bool, |
| 296 | } |
| 297 | |
| 298 | const ONLY_LONG_SEQUENCE: u8 = 0; |
| 299 | const LONG_START_SEQUENCE: u8 = 1; |
| 300 | const EIGHT_SHORT_SEQUENCE: u8 = 2; |
| 301 | const LONG_STOP_SEQUENCE: u8 = 3; |
| 302 | |
| 303 | impl ICSInfo { |
| 304 | fn new() -> Self { |
| 305 | Self { |
| 306 | window_sequence: 0, |
| 307 | prev_window_sequence: 0, |
| 308 | window_shape: false, |
| 309 | prev_window_shape: false, |
| 310 | scale_factor_grouping: [false; MAX_WINDOWS], |
| 311 | group_start: [0; MAX_WINDOWS], |
| 312 | num_windows: 0, |
| 313 | window_groups: 0, |
| 314 | max_sfb: 0, |
| 315 | predictor_data: None, |
| 316 | long_win: true, |
| 317 | } |
| 318 | } |
| 319 | fn decode_ics_info(&mut self, br: &mut BitReader) -> DecoderResult<()> { |
| 320 | self.prev_window_sequence = self.window_sequence; |
| 321 | self.prev_window_shape = self.window_shape; |
| 322 | let ics_reserved_bit = br.read(1)?; |
| 323 | validate!(ics_reserved_bit == 0); |
| 324 | self.window_sequence = br.read(2)? as u8; |
| 325 | match self.prev_window_sequence { |
| 326 | ONLY_LONG_SEQUENCE | LONG_STOP_SEQUENCE => { |
| 327 | validate!((self.window_sequence == ONLY_LONG_SEQUENCE) || |
| 328 | (self.window_sequence == LONG_START_SEQUENCE)); |
| 329 | }, |
| 330 | LONG_START_SEQUENCE | EIGHT_SHORT_SEQUENCE => { |
| 331 | validate!((self.window_sequence == EIGHT_SHORT_SEQUENCE) || |
| 332 | (self.window_sequence == LONG_STOP_SEQUENCE)); |
| 333 | }, |
| 334 | _ => {}, |
| 335 | }; |
| 336 | self.window_shape = br.read_bool()?; |
| 337 | self.window_groups = 1; |
| 338 | if self.window_sequence == EIGHT_SHORT_SEQUENCE { |
| 339 | self.long_win = false; |
| 340 | self.num_windows = 8; |
| 341 | self.max_sfb = br.read(4)? as usize; |
| 342 | for i in 0..MAX_WINDOWS-1 { |
| 343 | self.scale_factor_grouping[i] = br.read_bool()?; |
| 344 | if !self.scale_factor_grouping[i] { |
| 345 | self.group_start[self.window_groups] = i + 1; |
| 346 | self.window_groups += 1; |
| 347 | } |
| 348 | } |
| 349 | } else { |
| 350 | self.long_win = true; |
| 351 | self.num_windows = 1; |
| 352 | self.max_sfb = br.read(6)? as usize; |
| 353 | self.predictor_data = LTPData::read(br)?; |
| 354 | } |
| 355 | Ok(()) |
| 356 | } |
| 357 | fn get_group_start(&self, g: usize) -> usize { |
| 358 | if g == 0 { |
| 359 | 0 |
| 360 | } else if g >= self.window_groups { |
| 361 | if self.long_win { 1 } else { 8 } |
| 362 | } else { |
| 363 | self.group_start[g] |
| 364 | } |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | #[derive(Clone,Copy)] |
| 369 | struct LTPData { |
| 370 | } |
| 371 | |
| 372 | impl LTPData { |
| 373 | fn read(br: &mut BitReader) -> DecoderResult<Option<Self>> { |
| 374 | let predictor_data_present = br.read_bool()?; |
| 375 | if !predictor_data_present { return Ok(None); } |
| 376 | unimplemented!("predictor data"); |
| 377 | /* |
| 378 | if is_main { |
| 379 | let predictor_reset = br.read_bool()?; |
| 380 | if predictor_reset { |
| 381 | let predictor_reset_group_number = br.read(5)?; |
| 382 | } |
| 383 | for sfb in 0..max_sfb.min(PRED_SFB_MAX) { |
| 384 | prediction_used[sfb] = br.read_bool()?; |
| 385 | } |
| 386 | } else { |
| 387 | let ltp_data_present = br.read_bool()?; |
| 388 | if ltp_data_present { |
| 389 | //ltp data |
| 390 | } |
| 391 | if common_window { |
| 392 | let ltp_data_present = br.read_bool()?; |
| 393 | if ltp_data_present { |
| 394 | //ltp data |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | Ok(Some(Self { })) |
| 399 | */ |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | #[derive(Clone,Copy)] |
| 404 | #[allow(dead_code)] |
| 405 | struct PulseData { |
| 406 | number_pulse: usize, |
| 407 | pulse_start_sfb: usize, |
| 408 | pulse_offset: [u8; 4], |
| 409 | pulse_amp: [u8; 4], |
| 410 | } |
| 411 | |
| 412 | impl PulseData { |
| 413 | fn read(br: &mut BitReader) -> DecoderResult<Option<Self>> { |
| 414 | let pulse_data_present = br.read_bool()?; |
| 415 | if !pulse_data_present { return Ok(None); } |
| 416 | |
| 417 | let number_pulse = (br.read(2)? as usize) + 1; |
| 418 | let pulse_start_sfb = br.read(6)? as usize; |
| 419 | let mut pulse_offset: [u8; 4] = [0; 4]; |
| 420 | let mut pulse_amp: [u8; 4] = [0; 4]; |
| 421 | for i in 0..number_pulse { |
| 422 | pulse_offset[i] = br.read(5)? as u8; |
| 423 | pulse_amp[i] = br.read(4)? as u8; |
| 424 | } |
| 425 | Ok(Some(Self{ number_pulse, pulse_start_sfb, pulse_offset, pulse_amp })) |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | const TNS_MAX_ORDER: usize = 20; |
| 430 | const TNS_MAX_LONG_BANDS: [usize; 12] = [ 31, 31, 34, 40, 42, 51, 46, 46, 42, 42, 42, 39 ]; |
| 431 | const TNS_MAX_SHORT_BANDS: [usize; 12] = [ 9, 9, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14 ]; |
| 432 | |
| 433 | #[derive(Clone,Copy)] |
| 434 | struct TNSCoeffs { |
| 435 | length: usize, |
| 436 | order: usize, |
| 437 | direction: bool, |
| 438 | compress: bool, |
| 439 | coef: [f32; TNS_MAX_ORDER + 1], |
| 440 | } |
| 441 | |
| 442 | impl TNSCoeffs { |
| 443 | fn new() -> Self { |
| 444 | Self { |
| 445 | length: 0, order: 0, direction: false, compress: false, coef: [0.0; TNS_MAX_ORDER + 1], |
| 446 | } |
| 447 | } |
| 448 | fn read(&mut self, br: &mut BitReader, long_win: bool, coef_res: bool, max_order: usize) -> DecoderResult<()> { |
| 449 | self.length = br.read(if long_win { 6 } else { 4 })? as usize; |
| 450 | self.order = br.read(if long_win { 5 } else { 3 })? as usize; |
| 451 | validate!(self.order <= max_order); |
| 452 | if self.order > 0 { |
| 453 | self.direction = br.read_bool()?; |
| 454 | self.compress = br.read_bool()?; |
| 455 | let mut coef_bits = 3; |
| 456 | if coef_res { coef_bits += 1; } |
| 457 | if self.compress { coef_bits -= 1; } |
| 458 | let sign_mask = 1 << (coef_bits - 1); |
| 459 | let neg_mask = !(sign_mask * 2 - 1); |
| 460 | |
| 461 | let fac_base = if coef_res { 1 << 3 } else { 1 << 2 } as f32; |
| 462 | let iqfac = (fac_base - 0.5) / (consts::PI / 2.0); |
| 463 | let iqfac_m = (fac_base + 0.5) / (consts::PI / 2.0); |
| 464 | let mut tmp: [f32; TNS_MAX_ORDER] = [0.0; TNS_MAX_ORDER]; |
| 465 | for el in tmp.iter_mut().take(self.order) { |
| 466 | let val = br.read(coef_bits)? as i8; |
| 467 | let c = f32::from(if (val & sign_mask) != 0 { val | neg_mask } else { val }); |
| 468 | *el = (if c >= 0.0 { c / iqfac } else { c / iqfac_m }).sin(); |
| 469 | } |
| 470 | // convert to LPC coefficients |
| 471 | let mut b: [f32; TNS_MAX_ORDER + 1] = [0.0; TNS_MAX_ORDER + 1]; |
| 472 | for m in 1..=self.order { |
| 473 | for i in 1..m { |
| 474 | b[i] = self.coef[i - 1] + tmp[m - 1] * self.coef[m - i - 1]; |
| 475 | } |
| 476 | for i in 1..m { |
| 477 | self.coef[i - 1] = b[i]; |
| 478 | } |
| 479 | self.coef[m - 1] = tmp[m - 1]; |
| 480 | } |
| 481 | } |
| 482 | Ok(()) |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | #[derive(Clone,Copy)] |
| 487 | #[allow(dead_code)] |
| 488 | struct TNSData { |
| 489 | n_filt: [usize; MAX_WINDOWS], |
| 490 | coef_res: [bool; MAX_WINDOWS], |
| 491 | coeffs: [[TNSCoeffs; 4]; MAX_WINDOWS], |
| 492 | } |
| 493 | |
| 494 | impl TNSData { |
| 495 | fn read(br: &mut BitReader, long_win: bool, num_windows: usize, max_order: usize) -> DecoderResult<Option<Self>> { |
| 496 | let tns_data_present = br.read_bool()?; |
| 497 | if !tns_data_present { return Ok(None); } |
| 498 | let mut n_filt: [usize; MAX_WINDOWS] = [0; MAX_WINDOWS]; |
| 499 | let mut coef_res: [bool; MAX_WINDOWS] = [false; MAX_WINDOWS]; |
| 500 | let mut coeffs: [[TNSCoeffs; 4]; MAX_WINDOWS] = [[TNSCoeffs::new(); 4]; MAX_WINDOWS]; |
| 501 | for w in 0..num_windows { |
| 502 | n_filt[w] = br.read(if long_win { 2 } else { 1 })? as usize; |
| 503 | if n_filt[w] != 0 { |
| 504 | coef_res[w] = br.read_bool()?; |
| 505 | } |
| 506 | for filt in 0..n_filt[w] { |
| 507 | coeffs[w][filt].read(br, long_win, coef_res[w], max_order)?; |
| 508 | } |
| 509 | } |
| 510 | Ok(Some(Self { n_filt, coef_res, coeffs })) |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | #[derive(Clone,Copy)] |
| 515 | #[allow(dead_code)] |
| 516 | struct GainControlData { |
| 517 | max_band: u8, |
| 518 | } |
| 519 | |
| 520 | impl GainControlData { |
| 521 | fn read(br: &mut BitReader) -> DecoderResult<Option<Self>> { |
| 522 | let gain_control_data_present = br.read_bool()?; |
| 523 | if !gain_control_data_present { return Ok(None); } |
| 524 | unimplemented!("gain control data"); |
| 525 | /* self.max_band = br.read(2)? as u8; |
| 526 | if window_sequence == ONLY_LONG_SEQUENCE { |
| 527 | for bd in 0..max_band |
| 528 | ... |
| 529 | } |
| 530 | Ok(Some(Self { }))*/ |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | const ZERO_HCB: u8 = 0; |
| 535 | const FIRST_PAIR_HCB: u8 = 5; |
| 536 | const ESC_HCB: u8 = 11; |
| 537 | const RESERVED_HCB: u8 = 12; |
| 538 | const NOISE_HCB: u8 = 13; |
| 539 | const INTENSITY_HCB2: u8 = 14; |
| 540 | const INTENSITY_HCB: u8 = 15; |
| 541 | |
| 542 | struct Codebooks { |
| 543 | scale_cb: Codebook<i8>, |
| 544 | spec_cb: [Codebook<u16>; 11], |
| 545 | } |
| 546 | |
| 547 | fn scale_map(idx: usize) -> i8 { (idx as i8) - 60 } |
| 548 | fn cb_map(idx: usize) -> u16 { idx as u16 } |
| 549 | |
| 550 | impl Codebooks { |
| 551 | fn new() -> Self { |
| 552 | let mut coderead = TableCodebookDescReader::new(AAC_SCF_CODEBOOK_CODES, AAC_SCF_CODEBOOK_BITS, scale_map); |
| 553 | let scale_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 554 | let mut spec_cb: [Codebook<u16>; 11]; |
| 555 | unsafe { |
| 556 | spec_cb = mem::uninitialized(); |
| 557 | for i in 0..AAC_SPEC_CODES.len() { |
| 558 | let mut coderead = TableCodebookDescReader::new(AAC_SPEC_CODES[i], AAC_SPEC_BITS[i], cb_map); |
| 559 | ptr::write(&mut spec_cb[i], Codebook::new(&mut coderead, CodebookMode::MSB).unwrap()); |
| 560 | } |
| 561 | } |
| 562 | Self { scale_cb, spec_cb } |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | #[derive(Clone)] |
| 567 | struct ICS { |
| 568 | global_gain: u8, |
| 569 | info: ICSInfo, |
| 570 | pulse_data: Option<PulseData>, |
| 571 | tns_data: Option<TNSData>, |
| 572 | gain_control: Option<GainControlData>, |
| 573 | sect_cb: [[u8; MAX_SFBS]; MAX_WINDOWS], |
| 574 | sect_len: [[usize; MAX_SFBS]; MAX_WINDOWS], |
| 575 | sfb_cb: [[u8; MAX_SFBS]; MAX_WINDOWS], |
| 576 | num_sec: [usize; MAX_WINDOWS], |
| 577 | scales: [[u8; MAX_SFBS]; MAX_WINDOWS], |
| 578 | sbinfo: GASubbandInfo, |
| 579 | coeffs: [f32; 1024], |
| 580 | delay: [f32; 1024], |
| 581 | } |
| 582 | |
| 583 | const INTENSITY_SCALE_MIN: i16 = -155; |
| 584 | const NOISE_SCALE_MIN: i16 = -100; |
| 585 | impl ICS { |
| 586 | fn new(sbinfo: GASubbandInfo) -> Self { |
| 587 | Self { |
| 588 | global_gain: 0, |
| 589 | info: ICSInfo::new(), |
| 590 | pulse_data: None, |
| 591 | tns_data: None, |
| 592 | gain_control: None, |
| 593 | sect_cb: [[0; MAX_SFBS]; MAX_WINDOWS], |
| 594 | sect_len: [[0; MAX_SFBS]; MAX_WINDOWS], |
| 595 | sfb_cb: [[0; MAX_SFBS]; MAX_WINDOWS], |
| 596 | scales: [[0; MAX_SFBS]; MAX_WINDOWS], |
| 597 | num_sec: [0; MAX_WINDOWS], |
| 598 | sbinfo, |
| 599 | coeffs: [0.0; 1024], |
| 600 | delay: [0.0; 1024], |
| 601 | } |
| 602 | } |
| 603 | fn decode_section_data(&mut self, br: &mut BitReader, may_have_intensity: bool) -> DecoderResult<()> { |
| 604 | let sect_bits = if self.info.long_win { 5 } else { 3 }; |
| 605 | let sect_esc_val = (1 << sect_bits) - 1; |
| 606 | |
| 607 | for g in 0..self.info.window_groups { |
| 608 | let mut k = 0; |
| 609 | let mut l = 0; |
| 610 | while k < self.info.max_sfb { |
| 611 | self.sect_cb[g][l] = br.read(4)? as u8; |
| 612 | self.sect_len[g][l] = 0; |
| 613 | validate!(self.sect_cb[g][l] != RESERVED_HCB); |
| 614 | if ((self.sect_cb[g][l] == INTENSITY_HCB) || (self.sect_cb[g][l] == INTENSITY_HCB2)) && !may_have_intensity { |
| 615 | return Err(DecoderError::InvalidData); |
| 616 | } |
| 617 | loop { |
| 618 | let sect_len_incr = br.read(sect_bits)? as usize; |
| 619 | self.sect_len[g][l] += sect_len_incr; |
| 620 | if sect_len_incr < sect_esc_val { break; } |
| 621 | } |
| 622 | validate!(k + self.sect_len[g][l] <= self.info.max_sfb); |
| 623 | for _ in 0..self.sect_len[g][l] { |
| 624 | self.sfb_cb[g][k] = self.sect_cb[g][l]; |
| 625 | k += 1; |
| 626 | } |
| 627 | l += 1; |
| 628 | } |
| 629 | self.num_sec[g] = l; |
| 630 | } |
| 631 | Ok(()) |
| 632 | } |
| 633 | fn is_intensity(&self, g: usize, sfb: usize) -> bool { |
| 634 | (self.sfb_cb[g][sfb] == INTENSITY_HCB) || (self.sfb_cb[g][sfb] == INTENSITY_HCB2) |
| 635 | } |
| 636 | fn get_intensity_dir(&self, g: usize, sfb: usize) -> bool { |
| 637 | self.sfb_cb[g][sfb] == INTENSITY_HCB |
| 638 | } |
| 639 | fn decode_scale_factor_data(&mut self, br: &mut BitReader, codebooks: &Codebooks) -> DecoderResult<()> { |
| 640 | let mut noise_pcm_flag = true; |
| 641 | let mut scf_normal = i16::from(self.global_gain); |
| 642 | let mut scf_intensity = 0i16; |
| 643 | let mut scf_noise = 0i16; |
| 644 | for g in 0..self.info.window_groups { |
| 645 | for sfb in 0..self.info.max_sfb { |
| 646 | if self.sfb_cb[g][sfb] != ZERO_HCB { |
| 647 | if self.is_intensity(g, sfb) { |
| 648 | let diff = i16::from(br.read_cb(&codebooks.scale_cb)?); |
| 649 | scf_intensity += diff; |
| 650 | validate!((scf_intensity >= INTENSITY_SCALE_MIN) && (scf_intensity < INTENSITY_SCALE_MIN + 256)); |
| 651 | self.scales[g][sfb] = (scf_intensity - INTENSITY_SCALE_MIN) as u8; |
| 652 | } else if self.sfb_cb[g][sfb] == NOISE_HCB { |
| 653 | if noise_pcm_flag { |
| 654 | noise_pcm_flag = false; |
| 655 | scf_noise = (br.read(9)? as i16) - 256 + i16::from(self.global_gain) - 90; |
| 656 | } else { |
| 657 | scf_noise += i16::from(br.read_cb(&codebooks.scale_cb)?); |
| 658 | } |
| 659 | validate!((scf_noise >= NOISE_SCALE_MIN) && (scf_noise < NOISE_SCALE_MIN + 256)); |
| 660 | self.scales[g][sfb] = (scf_noise - NOISE_SCALE_MIN) as u8; |
| 661 | } else { |
| 662 | scf_normal += i16::from(br.read_cb(&codebooks.scale_cb)?); |
| 663 | validate!((scf_normal >= 0) && (scf_normal < 255)); |
| 664 | self.scales[g][sfb] = scf_normal as u8; |
| 665 | } |
| 666 | } |
| 667 | } |
| 668 | } |
| 669 | Ok(()) |
| 670 | } |
| 671 | fn get_band_start(&self, swb: usize) -> usize { |
| 672 | if self.info.long_win { |
| 673 | self.sbinfo.long_bands[swb] |
| 674 | } else { |
| 675 | self.sbinfo.short_bands[swb] |
| 676 | } |
| 677 | } |
| 678 | fn get_num_bands(&self) -> usize { |
| 679 | if self.info.long_win { |
| 680 | self.sbinfo.long_bands.len() - 1 |
| 681 | } else { |
| 682 | self.sbinfo.short_bands.len() - 1 |
| 683 | } |
| 684 | } |
| 685 | fn decode_spectrum(&mut self, br: &mut BitReader, codebooks: &Codebooks) -> DecoderResult<()> { |
| 686 | self.coeffs = [0.0; 1024]; |
| 687 | for g in 0..self.info.window_groups { |
| 688 | let cur_w = self.info.get_group_start(g); |
| 689 | let next_w = self.info.get_group_start(g + 1); |
| 690 | for sfb in 0..self.info.max_sfb { |
| 691 | let start = self.get_band_start(sfb); |
| 692 | let end = self.get_band_start(sfb + 1); |
| 693 | let cb_idx = self.sfb_cb[g][sfb]; |
| 694 | for w in cur_w..next_w { |
| 695 | let dst = &mut self.coeffs[start + w*128..end + w*128]; |
| 696 | match cb_idx { |
| 697 | ZERO_HCB => { /* zeroes */ }, |
| 698 | NOISE_HCB => { /* noise */ }, |
| 699 | INTENSITY_HCB | INTENSITY_HCB2 => { /* intensity */ }, |
| 700 | _ => { |
| 701 | let unsigned = AAC_UNSIGNED_CODEBOOK[(cb_idx - 1) as usize]; |
| 702 | let scale = get_scale(self.scales[g][sfb]); |
| 703 | let cb = &codebooks.spec_cb[(cb_idx - 1) as usize]; |
| 704 | if cb_idx < FIRST_PAIR_HCB { |
| 705 | decode_quads(br, cb, unsigned, scale, dst)?; |
| 706 | } else { |
| 707 | decode_pairs(br, cb, unsigned, cb_idx == ESC_HCB, |
| 708 | AAC_CODEBOOK_MODULO[(cb_idx - FIRST_PAIR_HCB) as usize], scale, dst)?; |
| 709 | } |
| 710 | }, |
| 711 | }; |
| 712 | } |
| 713 | } |
| 714 | } |
| 715 | Ok(()) |
| 716 | } |
| 717 | fn place_pulses(&mut self) { |
| 718 | if let Some(ref pdata) = self.pulse_data { |
| 719 | if pdata.pulse_start_sfb >= self.sbinfo.long_bands.len() - 1 { return; } |
| 720 | let mut k = self.get_band_start(pdata.pulse_start_sfb); |
| 721 | let mut band = pdata.pulse_start_sfb; |
| 722 | for pno in 0..pdata.number_pulse { |
| 723 | k += pdata.pulse_offset[pno] as usize; |
| 724 | if k >= 1024 { return; } |
| 725 | while self.get_band_start(band + 1) <= k { band += 1; } |
| 726 | let scale = get_scale(self.scales[0][band]); |
| 727 | let mut base = self.coeffs[k]; |
| 728 | if base != 0.0 { |
| 729 | base = requant(self.coeffs[k], scale); |
| 730 | } |
| 731 | if base > 0.0 { |
| 732 | base += f32::from(pdata.pulse_amp[pno]); |
| 733 | } else { |
| 734 | base -= f32::from(pdata.pulse_amp[pno]); |
| 735 | } |
| 736 | self.coeffs[k] = iquant(base) * scale; |
| 737 | } |
| 738 | } |
| 739 | } |
| 740 | fn decode_ics(&mut self, br: &mut BitReader, codebooks: &Codebooks, m4atype: M4AType, common_window: bool, may_have_intensity: bool) -> DecoderResult<()> { |
| 741 | self.global_gain = br.read(8)? as u8; |
| 742 | if !common_window { |
| 743 | self.info.decode_ics_info(br)?; |
| 744 | } |
| 745 | self.decode_section_data(br, may_have_intensity)?; |
| 746 | self.decode_scale_factor_data(br, codebooks)?; |
| 747 | self.pulse_data = PulseData::read(br)?; |
| 748 | validate!(self.pulse_data.is_none() || self.info.long_win); |
| 749 | let tns_max_order; |
| 750 | if !self.info.long_win { |
| 751 | tns_max_order = 7; |
| 752 | } else if m4atype == M4AType::LC { |
| 753 | tns_max_order = 12; |
| 754 | } else { |
| 755 | tns_max_order = TNS_MAX_ORDER; |
| 756 | } |
| 757 | self.tns_data = TNSData::read(br, self.info.long_win, self.info.num_windows, tns_max_order)?; |
| 758 | if m4atype == M4AType::SSR { |
| 759 | self.gain_control = GainControlData::read(br)?; |
| 760 | } else { |
| 761 | let gain_control_data_present = br.read_bool()?; |
| 762 | validate!(!gain_control_data_present); |
| 763 | } |
| 764 | self.decode_spectrum(br, codebooks)?; |
| 765 | Ok(()) |
| 766 | } |
| 767 | fn synth_channel(&mut self, dsp: &mut DSP, dst: &mut [f32], srate_idx: usize) { |
| 768 | self.place_pulses(); |
| 769 | if let Some(ref tns_data) = self.tns_data { |
| 770 | let tns_max_bands = (if self.info.long_win { |
| 771 | TNS_MAX_LONG_BANDS[srate_idx] |
| 772 | } else { |
| 773 | TNS_MAX_SHORT_BANDS[srate_idx] |
| 774 | }).min(self.info.max_sfb); |
| 775 | for w in 0..self.info.num_windows { |
| 776 | let mut bottom = self.get_num_bands(); |
| 777 | for f in 0..tns_data.n_filt[w] { |
| 778 | let top = bottom; |
| 779 | bottom = if top >= tns_data.coeffs[w][f].length { top - tns_data.coeffs[w][f].length } else { 0 }; |
| 780 | let order = tns_data.coeffs[w][f].order; |
| 781 | if order == 0 { continue; } |
| 782 | let start = w * 128 + self.get_band_start(tns_max_bands.min(bottom)); |
| 783 | let end = w * 128 + self.get_band_start(tns_max_bands.min(top)); |
| 784 | let lpc = &tns_data.coeffs[w][f].coef; |
| 785 | if !tns_data.coeffs[w][f].direction { |
| 786 | for m in start..end { |
| 787 | for i in 0..order.min(m) { |
| 788 | self.coeffs[m] -= self.coeffs[m - i - 1] * lpc[i]; |
| 789 | } |
| 790 | } |
| 791 | } else { |
| 792 | for m in (start..end).rev() { |
| 793 | for i in 0..order.min(m) { |
| 794 | self.coeffs[m] -= self.coeffs[m + i - 1] * lpc[i]; |
| 795 | } |
| 796 | } |
| 797 | } |
| 798 | } |
| 799 | } |
| 800 | } |
| 801 | dsp.synth(&self.coeffs, &mut self.delay, self.info.window_sequence, self.info.window_shape, self.info.prev_window_shape, dst); |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | fn get_scale(scale: u8) -> f32 { |
| 806 | 2.0f32.powf(0.25 * (f32::from(scale) - 100.0 - 56.0)) |
| 807 | } |
| 808 | fn iquant(val: f32) -> f32 { |
| 809 | if val < 0.0 { |
| 810 | -((-val).powf(4.0 / 3.0)) |
| 811 | } else { |
| 812 | val.powf(4.0 / 3.0) |
| 813 | } |
| 814 | } |
| 815 | fn requant(val: f32, scale: f32) -> f32 { |
| 816 | if scale == 0.0 { return 0.0; } |
| 817 | let bval = val / scale; |
| 818 | if bval >= 0.0 { |
| 819 | val.powf(3.0 / 4.0) |
| 820 | } else { |
| 821 | -((-val).powf(3.0 / 4.0)) |
| 822 | } |
| 823 | } |
| 824 | fn decode_quads(br: &mut BitReader, cb: &Codebook<u16>, unsigned: bool, scale: f32, dst: &mut [f32]) -> DecoderResult<()> { |
| 825 | for out in dst.chunks_mut(4) { |
| 826 | let cw = br.read_cb(cb)? as usize; |
| 827 | if unsigned { |
| 828 | for i in 0..4 { |
| 829 | let val = AAC_QUADS[cw][i]; |
| 830 | if val != 0 { |
| 831 | if br.read_bool()? { |
| 832 | out[i] = iquant(-f32::from(val)) * scale; |
| 833 | } else { |
| 834 | out[i] = iquant( f32::from(val)) * scale; |
| 835 | } |
| 836 | } |
| 837 | } |
| 838 | } else { |
| 839 | for i in 0..4 { |
| 840 | out[i] = iquant(f32::from(AAC_QUADS[cw][i] - 1)) * scale; |
| 841 | } |
| 842 | } |
| 843 | } |
| 844 | Ok(()) |
| 845 | } |
| 846 | fn decode_pairs(br: &mut BitReader, cb: &Codebook<u16>, unsigned: bool, escape: bool, modulo: u16, scale: f32, dst: &mut [f32]) -> DecoderResult<()> { |
| 847 | for out in dst.chunks_mut(2) { |
| 848 | let cw = br.read_cb(cb)?; |
| 849 | let mut x = (cw / modulo) as i16; |
| 850 | let mut y = (cw % modulo) as i16; |
| 851 | if unsigned { |
| 852 | if x != 0 && br.read_bool()? { |
| 853 | x = -x; |
| 854 | } |
| 855 | if y != 0 && br.read_bool()? { |
| 856 | y = -y; |
| 857 | } |
| 858 | } else { |
| 859 | x -= (modulo >> 1) as i16; |
| 860 | y -= (modulo >> 1) as i16; |
| 861 | } |
| 862 | if escape { |
| 863 | if (x == 16) || (x == -16) { |
| 864 | x += read_escape(br, x > 0)?; |
| 865 | } |
| 866 | if (y == 16) || (y == -16) { |
| 867 | y += read_escape(br, y > 0)?; |
| 868 | } |
| 869 | } |
| 870 | out[0] = iquant(f32::from(x)) * scale; |
| 871 | out[1] = iquant(f32::from(y)) * scale; |
| 872 | } |
| 873 | Ok(()) |
| 874 | } |
| 875 | fn read_escape(br: &mut BitReader, sign: bool) -> DecoderResult<i16> { |
| 876 | let prefix = br.read_code(UintCodeType::UnaryOnes)? as u8; |
| 877 | validate!(prefix < 9); |
| 878 | let bits = br.read(prefix + 4)? as i16; |
| 879 | if sign { |
| 880 | Ok(bits) |
| 881 | } else { |
| 882 | Ok(-bits) |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | #[derive(Clone)] |
| 887 | struct ChannelPair { |
| 888 | pair: bool, |
| 889 | channel: usize, |
| 890 | common_window: bool, |
| 891 | ms_mask_present: u8, |
| 892 | ms_used: [[bool; MAX_SFBS]; MAX_WINDOWS], |
| 893 | ics: [ICS; 2], |
| 894 | } |
| 895 | |
| 896 | impl ChannelPair { |
| 897 | fn new(pair: bool, channel: usize, sbinfo: GASubbandInfo) -> Self { |
| 898 | Self { |
| 899 | pair, channel, |
| 900 | common_window: false, |
| 901 | ms_mask_present: 0, |
| 902 | ms_used: [[false; MAX_SFBS]; MAX_WINDOWS], |
| 903 | ics: [ICS::new(sbinfo), ICS::new(sbinfo)], |
| 904 | } |
| 905 | } |
| 906 | fn decode_ga_sce(&mut self, br: &mut BitReader, codebooks: &Codebooks, m4atype: M4AType) -> DecoderResult<()> { |
| 907 | self.ics[0].decode_ics(br, codebooks, m4atype, false, false)?; |
| 908 | Ok(()) |
| 909 | } |
| 910 | fn decode_ga_cpe(&mut self, br: &mut BitReader, codebooks: &Codebooks, m4atype: M4AType) -> DecoderResult<()> { |
| 911 | let common_window = br.read_bool()?; |
| 912 | self.common_window = common_window; |
| 913 | if common_window { |
| 914 | self.ics[0].info.decode_ics_info(br)?; |
| 915 | self.ms_mask_present = br.read(2)? as u8; |
| 916 | validate!(self.ms_mask_present != 3); |
| 917 | if self.ms_mask_present == 1 { |
| 918 | for g in 0..self.ics[0].info.window_groups { |
| 919 | for sfb in 0..self.ics[0].info.max_sfb { |
| 920 | self.ms_used[g][sfb] = br.read_bool()?; |
| 921 | } |
| 922 | } |
| 923 | } |
| 924 | self.ics[1].info = self.ics[0].info; |
| 925 | } |
| 926 | self.ics[0].decode_ics(br, codebooks, m4atype, common_window, true)?; |
| 927 | self.ics[1].decode_ics(br, codebooks, m4atype, common_window, false)?; |
| 928 | if common_window && self.ms_mask_present != 0 { |
| 929 | let mut g = 0; |
| 930 | for w in 0..self.ics[0].info.num_windows { |
| 931 | if w > 0 && self.ics[0].info.scale_factor_grouping[w - 1] { |
| 932 | g += 1; |
| 933 | } |
| 934 | for sfb in 0..self.ics[0].info.max_sfb { |
| 935 | let start = w * 128 + self.ics[0].get_band_start(sfb); |
| 936 | let end = w * 128 + self.ics[0].get_band_start(sfb + 1); |
| 937 | if self.ics[0].is_intensity(g, sfb) { |
| 938 | let invert = (self.ms_mask_present == 1) && self.ms_used[g][sfb]; |
| 939 | let dir = self.ics[0].get_intensity_dir(g, sfb) ^ invert; |
| 940 | let scale = 0.5f32.powf(0.25 * (f32::from(self.ics[0].scales[g][sfb]) + f32::from(INTENSITY_SCALE_MIN))); |
| 941 | if !dir { |
| 942 | for i in start..end { |
| 943 | self.ics[1].coeffs[i] = scale * self.ics[0].coeffs[i]; |
| 944 | } |
| 945 | } else { |
| 946 | for i in start..end { |
| 947 | self.ics[1].coeffs[i] = -scale * self.ics[0].coeffs[i]; |
| 948 | } |
| 949 | } |
| 950 | } else if (self.ms_mask_present == 2) || self.ms_used[g][sfb] { |
| 951 | for i in start..end { |
| 952 | let tmp = self.ics[0].coeffs[i] - self.ics[1].coeffs[i]; |
| 953 | self.ics[0].coeffs[i] += self.ics[1].coeffs[i]; |
| 954 | self.ics[1].coeffs[i] = tmp; |
| 955 | } |
| 956 | } |
| 957 | } |
| 958 | } |
| 959 | } |
| 960 | Ok(()) |
| 961 | } |
| 962 | fn synth_audio(&mut self, dsp: &mut DSP, abuf: &mut NABufferType, srate_idx: usize) { |
| 963 | let mut adata = abuf.get_abuf_f32().unwrap(); |
| 964 | let output = adata.get_data_mut().unwrap(); |
| 965 | let off0 = abuf.get_offset(self.channel); |
| 966 | let off1 = abuf.get_offset(self.channel + 1); |
| 967 | self.ics[0].synth_channel(dsp, &mut output[off0..], srate_idx); |
| 968 | if self.pair { |
| 969 | self.ics[1].synth_channel(dsp, &mut output[off1..], srate_idx); |
| 970 | } |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | struct DSP { |
| 975 | kbd_long_win: [f32; 1024], |
| 976 | kbd_short_win: [f32; 128], |
| 977 | sine_long_win: [f32; 1024], |
| 978 | sine_short_win: [f32; 128], |
| 979 | imdct_long: IMDCT, |
| 980 | imdct_short: IMDCT, |
| 981 | tmp: [f32; 2048], |
| 982 | ew_buf: [f32; 1152], |
| 983 | } |
| 984 | |
| 985 | const SHORT_WIN_POINT0: usize = 512 - 64; |
| 986 | const SHORT_WIN_POINT1: usize = 512 + 64; |
| 987 | |
| 988 | impl DSP { |
| 989 | fn new() -> Self { |
| 990 | let mut kbd_long_win: [f32; 1024] = [0.0; 1024]; |
| 991 | let mut kbd_short_win: [f32; 128] = [0.0; 128]; |
| 992 | generate_window(WindowType::KaiserBessel(4.0), 1.0, 1024, true, &mut kbd_long_win); |
| 993 | generate_window(WindowType::KaiserBessel(6.0), 1.0, 128, true, &mut kbd_short_win); |
| 994 | let mut sine_long_win: [f32; 1024] = [0.0; 1024]; |
| 995 | let mut sine_short_win: [f32; 128] = [0.0; 128]; |
| 996 | generate_window(WindowType::Sine, 1.0, 1024, true, &mut sine_long_win); |
| 997 | generate_window(WindowType::Sine, 1.0, 128, true, &mut sine_short_win); |
| 998 | Self { |
| 999 | kbd_long_win, kbd_short_win, |
| 1000 | sine_long_win, sine_short_win, |
| 1001 | imdct_long: IMDCT::new(1024 * 2, true), |
| 1002 | imdct_short: IMDCT::new(128 * 2, true), |
| 1003 | tmp: [0.0; 2048], ew_buf: [0.0; 1152], |
| 1004 | } |
| 1005 | } |
| 1006 | #[allow(clippy::cyclomatic_complexity)] |
| 1007 | fn synth(&mut self, coeffs: &[f32; 1024], delay: &mut [f32; 1024], seq: u8, window_shape: bool, prev_window_shape: bool, dst: &mut [f32]) { |
| 1008 | let long_win = if window_shape { &self.kbd_long_win } else { &self.sine_long_win }; |
| 1009 | let short_win = if window_shape { &self.kbd_short_win } else { &self.sine_short_win }; |
| 1010 | let left_long_win = if prev_window_shape { &self.kbd_long_win } else { &self.sine_long_win }; |
| 1011 | let left_short_win = if prev_window_shape { &self.kbd_short_win } else { &self.sine_short_win }; |
| 1012 | if seq != EIGHT_SHORT_SEQUENCE { |
| 1013 | self.imdct_long.imdct(coeffs, &mut self.tmp); |
| 1014 | } else { |
| 1015 | for (ain, aout) in coeffs.chunks(128).zip(self.tmp.chunks_mut(256)) { |
| 1016 | self.imdct_short.imdct(ain, aout); |
| 1017 | } |
| 1018 | self.ew_buf = [0.0; 1152]; |
| 1019 | for (w, src) in self.tmp.chunks(256).enumerate() { |
| 1020 | if w > 0 { |
| 1021 | for i in 0..128 { |
| 1022 | self.ew_buf[w * 128 + i] += src[i] * short_win[i]; |
| 1023 | } |
| 1024 | } else { // to be left-windowed |
| 1025 | for i in 0..128 { |
| 1026 | self.ew_buf[i] = src[i]; |
| 1027 | } |
| 1028 | } |
| 1029 | for i in 0..128 { |
| 1030 | self.ew_buf[w * 128 + i + 128] += src[i + 128] * short_win[127 - i]; |
| 1031 | } |
| 1032 | } |
| 1033 | } |
| 1034 | if seq == ONLY_LONG_SEQUENCE { // should be the most common case |
| 1035 | for i in 0..1024 { |
| 1036 | dst[i] = delay[i] + self.tmp[i] * left_long_win[i]; |
| 1037 | delay[i] = self.tmp[i + 1024] * long_win[1023 - i]; |
| 1038 | } |
| 1039 | return; |
| 1040 | } |
| 1041 | // output new data |
| 1042 | match seq { |
| 1043 | ONLY_LONG_SEQUENCE | LONG_START_SEQUENCE => { |
| 1044 | for i in 0..1024 { |
| 1045 | dst[i] = self.tmp[i] * left_long_win[i] + delay[i]; |
| 1046 | } |
| 1047 | }, |
| 1048 | EIGHT_SHORT_SEQUENCE => { |
| 1049 | for i in 0..SHORT_WIN_POINT0 { |
| 1050 | dst[i] = delay[i]; |
| 1051 | } |
| 1052 | for i in SHORT_WIN_POINT0..SHORT_WIN_POINT1 { |
| 1053 | let j = i - SHORT_WIN_POINT0; |
| 1054 | dst[i] = delay[i] + self.ew_buf[j] * left_short_win[j]; |
| 1055 | } |
| 1056 | for i in SHORT_WIN_POINT1..1024 { |
| 1057 | let j = i - SHORT_WIN_POINT0; |
| 1058 | dst[i] = self.ew_buf[j]; |
| 1059 | } |
| 1060 | }, |
| 1061 | LONG_STOP_SEQUENCE => { |
| 1062 | for i in 0..SHORT_WIN_POINT0 { |
| 1063 | dst[i] = delay[i]; |
| 1064 | } |
| 1065 | for i in SHORT_WIN_POINT0..SHORT_WIN_POINT1 { |
| 1066 | dst[i] = delay[i] + self.tmp[i] * left_short_win[i - SHORT_WIN_POINT0]; |
| 1067 | } |
| 1068 | for i in SHORT_WIN_POINT1..1024 { |
| 1069 | dst[i] = self.tmp[i]; |
| 1070 | } |
| 1071 | }, |
| 1072 | _ => unreachable!(""), |
| 1073 | }; |
| 1074 | // save delay |
| 1075 | match seq { |
| 1076 | ONLY_LONG_SEQUENCE | LONG_STOP_SEQUENCE => { |
| 1077 | for i in 0..1024 { |
| 1078 | delay[i] = self.tmp[i + 1024] * long_win[1023 - i]; |
| 1079 | } |
| 1080 | }, |
| 1081 | EIGHT_SHORT_SEQUENCE => { |
| 1082 | for i in 0..SHORT_WIN_POINT1 { // last part is already windowed |
| 1083 | delay[i] = self.ew_buf[i + 512+64]; |
| 1084 | } |
| 1085 | for i in SHORT_WIN_POINT1..1024 { |
| 1086 | delay[i] = 0.0; |
| 1087 | } |
| 1088 | }, |
| 1089 | LONG_START_SEQUENCE => { |
| 1090 | for i in 0..SHORT_WIN_POINT0 { |
| 1091 | delay[i] = self.tmp[i + 1024]; |
| 1092 | } |
| 1093 | for i in SHORT_WIN_POINT0..SHORT_WIN_POINT1 { |
| 1094 | delay[i] = self.tmp[i + 1024] * short_win[127 - (i - SHORT_WIN_POINT0)]; |
| 1095 | } |
| 1096 | for i in SHORT_WIN_POINT1..1024 { |
| 1097 | delay[i] = 0.0; |
| 1098 | } |
| 1099 | }, |
| 1100 | _ => unreachable!(""), |
| 1101 | }; |
| 1102 | } |
| 1103 | } |
| 1104 | |
| 1105 | struct AACDecoder { |
| 1106 | info: NACodecInfoRef, |
| 1107 | chmap: NAChannelMap, |
| 1108 | m4ainfo: M4AInfo, |
| 1109 | pairs: Vec<ChannelPair>, |
| 1110 | codebooks: Codebooks, |
| 1111 | dsp: DSP, |
| 1112 | sbinfo: GASubbandInfo, |
| 1113 | } |
| 1114 | |
| 1115 | impl AACDecoder { |
| 1116 | fn new() -> Self { |
| 1117 | AACDecoder { |
| 1118 | info: NACodecInfo::new_dummy(), |
| 1119 | chmap: NAChannelMap::new(), |
| 1120 | m4ainfo: M4AInfo::new(), |
| 1121 | pairs: Vec::new(), |
| 1122 | codebooks: Codebooks::new(), |
| 1123 | dsp: DSP::new(), |
| 1124 | sbinfo: AAC_SUBBAND_INFO[0], |
| 1125 | } |
| 1126 | } |
| 1127 | fn set_pair(&mut self, pair_no: usize, channel: usize, pair: bool) -> DecoderResult<()> { |
| 1128 | if self.pairs.len() <= pair_no { |
| 1129 | self.pairs.push(ChannelPair::new(pair, channel, self.sbinfo)); |
| 1130 | } else { |
| 1131 | validate!(self.pairs[pair_no].channel == channel); |
| 1132 | validate!(self.pairs[pair_no].pair == pair); |
| 1133 | } |
| 1134 | validate!(if pair { channel + 1 } else { channel } < self.m4ainfo.channels); |
| 1135 | Ok(()) |
| 1136 | } |
| 1137 | fn decode_ga(&mut self, br: &mut BitReader, abuf: &mut NABufferType) -> DecoderResult<()> { |
| 1138 | let mut cur_pair = 0; |
| 1139 | let mut cur_ch = 0; |
| 1140 | while br.left() > 3 { |
| 1141 | let id = br.read(3)?; |
| 1142 | match id { |
| 1143 | 0 => { // ID_SCE |
| 1144 | let _tag = br.read(4)?; |
| 1145 | self.set_pair(cur_pair, cur_ch, false)?; |
| 1146 | self.pairs[cur_pair].decode_ga_sce(br, &self.codebooks, self.m4ainfo.otype)?; |
| 1147 | cur_pair += 1; |
| 1148 | cur_ch += 1; |
| 1149 | }, |
| 1150 | 1 => { // ID_CPE |
| 1151 | let _tag = br.read(4)?; |
| 1152 | self.set_pair(cur_pair, cur_ch, true)?; |
| 1153 | self.pairs[cur_pair].decode_ga_cpe(br, &self.codebooks, self.m4ainfo.otype)?; |
| 1154 | cur_pair += 1; |
| 1155 | cur_ch += 2; |
| 1156 | }, |
| 1157 | 2 => { // ID_CCE |
| 1158 | unimplemented!("coupling channel element"); |
| 1159 | }, |
| 1160 | 3 => { // ID_LFE |
| 1161 | let _tag = br.read(4)?; |
| 1162 | self.set_pair(cur_pair, cur_ch, false)?; |
| 1163 | self.pairs[cur_pair].decode_ga_sce(br, &self.codebooks, self.m4ainfo.otype)?; |
| 1164 | cur_pair += 1; |
| 1165 | cur_ch += 1; |
| 1166 | }, |
| 1167 | 4 => { // ID_DSE |
| 1168 | let _id = br.read(4)?; |
| 1169 | let align = br.read_bool()?; |
| 1170 | let mut count = br.read(8)? as u32; |
| 1171 | if count == 255 { count += br.read(8)? as u32; } |
| 1172 | if align { br.align(); } |
| 1173 | br.skip(count * 8)?; // no SBR payload or such |
| 1174 | }, |
| 1175 | 5 => { // ID_PCE |
| 1176 | unimplemented!("program config"); |
| 1177 | }, |
| 1178 | 6 => { // ID_FIL |
| 1179 | let mut count = br.read(4)? as usize; |
| 1180 | if count == 15 { |
| 1181 | count += br.read(8)? as usize; |
| 1182 | count -= 1; |
| 1183 | } |
| 1184 | for _ in 0..count { |
| 1185 | // ext payload |
| 1186 | br.skip(8)?; |
| 1187 | } |
| 1188 | }, |
| 1189 | 7 => { // ID_TERM |
| 1190 | break; |
| 1191 | }, |
| 1192 | _ => { unreachable!(); }, |
| 1193 | }; |
| 1194 | } |
| 1195 | let srate_idx = GASubbandInfo::find_idx(self.m4ainfo.srate); |
| 1196 | for pair in 0..cur_pair { |
| 1197 | self.pairs[pair].synth_audio(&mut self.dsp, abuf, srate_idx); |
| 1198 | } |
| 1199 | Ok(()) |
| 1200 | } |
| 1201 | } |
| 1202 | |
| 1203 | impl NADecoder for AACDecoder { |
| 1204 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
| 1205 | if let NACodecTypeInfo::Audio(_) = info.get_properties() { |
| 1206 | let edata = info.get_extradata().unwrap(); |
| 1207 | validate!(edata.len() >= 2); |
| 1208 | |
| 1209 | //print!("edata:"); for s in edata.iter() { print!(" {:02X}", *s);}println!(""); |
| 1210 | self.m4ainfo.read(&edata)?; |
| 1211 | |
| 1212 | //println!("{}", self.m4ainfo); |
| 1213 | if (self.m4ainfo.otype != M4AType::LC) || (self.m4ainfo.channels > 2) || (self.m4ainfo.samples != 1024) { |
| 1214 | return Err(DecoderError::NotImplemented); |
| 1215 | } |
| 1216 | self.sbinfo = GASubbandInfo::find(self.m4ainfo.srate); |
| 1217 | |
| 1218 | let ainfo = NAAudioInfo::new(self.m4ainfo.srate, self.m4ainfo.channels as u8, |
| 1219 | SND_F32P_FORMAT, self.m4ainfo.samples); |
| 1220 | self.info = info.replace_info(NACodecTypeInfo::Audio(ainfo)); |
| 1221 | |
| 1222 | if self.m4ainfo.channels >= DEFAULT_CHANNEL_MAP.len() { |
| 1223 | return Err(DecoderError::NotImplemented); |
| 1224 | } |
| 1225 | let chmap_str = DEFAULT_CHANNEL_MAP[self.m4ainfo.channels]; |
| 1226 | if chmap_str.is_empty() { return Err(DecoderError::NotImplemented); } |
| 1227 | self.chmap = NAChannelMap::from_str(chmap_str).unwrap(); |
| 1228 | |
| 1229 | Ok(()) |
| 1230 | } else { |
| 1231 | Err(DecoderError::InvalidData) |
| 1232 | } |
| 1233 | } |
| 1234 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 1235 | let info = pkt.get_stream().get_info(); |
| 1236 | validate!(info.get_properties().is_audio()); |
| 1237 | let pktbuf = pkt.get_buffer(); |
| 1238 | |
| 1239 | let ainfo = self.info.get_properties().get_audio_info().unwrap(); |
| 1240 | let mut abuf = alloc_audio_buffer(ainfo, self.m4ainfo.samples, self.chmap.clone())?; |
| 1241 | |
| 1242 | let mut br = BitReader::new(&pktbuf, BitReaderMode::BE); |
| 1243 | match self.m4ainfo.otype { |
| 1244 | M4AType::LC => { |
| 1245 | self.decode_ga(&mut br, &mut abuf)?; |
| 1246 | }, |
| 1247 | _ => { unimplemented!(""); } |
| 1248 | } |
| 1249 | |
| 1250 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.replace_info(NACodecTypeInfo::Audio(ainfo)), abuf); |
| 1251 | frm.set_keyframe(true); |
| 1252 | Ok(frm.into_ref()) |
| 1253 | } |
| 1254 | fn flush(&mut self) { |
| 1255 | for pair in self.pairs.iter_mut() { |
| 1256 | pair.ics[0].delay = [0.0; 1024]; |
| 1257 | pair.ics[1].delay = [0.0; 1024]; |
| 1258 | } |
| 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | impl NAOptionHandler for AACDecoder { |
| 1263 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } |
| 1264 | fn set_options(&mut self, _options: &[NAOption]) { } |
| 1265 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } |
| 1266 | } |
| 1267 | |
| 1268 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
| 1269 | Box::new(AACDecoder::new()) |
| 1270 | } |
| 1271 | |
| 1272 | #[cfg(test)] |
| 1273 | mod test { |
| 1274 | use nihav_core::codecs::RegisteredDecoders; |
| 1275 | use nihav_core::demuxers::RegisteredDemuxers; |
| 1276 | use nihav_codec_support::test::dec_video::test_decode_audio; |
| 1277 | use crate::generic_register_all_decoders; |
| 1278 | use nihav_realmedia::realmedia_register_all_demuxers; |
| 1279 | #[test] |
| 1280 | fn test_aac() { |
| 1281 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 1282 | realmedia_register_all_demuxers(&mut dmx_reg); |
| 1283 | let mut dec_reg = RegisteredDecoders::new(); |
| 1284 | generic_register_all_decoders(&mut dec_reg); |
| 1285 | |
| 1286 | // let file = "assets/RV/rv40_weighted_mc.rmvb"; |
| 1287 | let file = "assets/RV/rv40_weighted_mc_2.rmvb"; |
| 1288 | test_decode_audio("realmedia", file, Some(12000), None/*Some("aac")*/, &dmx_reg, &dec_reg); |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | const AAC_SCF_CODEBOOK_BITS: &[u8] = &[ |
| 1293 | 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, |
| 1294 | 19, 19, 19, 18, 19, 18, 17, 17, 16, 17, 16, 16, 16, 16, 15, 15, |
| 1295 | 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 12, 11, 12, 11, 10, 10, |
| 1296 | 10, 9, 9, 8, 8, 8, 7, 6, 6, 5, 4, 3, 1, 4, 4, 5, |
| 1297 | 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 10, 11, 11, 11, 11, 12, |
| 1298 | 12, 13, 13, 13, 14, 14, 16, 15, 16, 15, 18, 19, 19, 19, 19, 19, |
| 1299 | 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, |
| 1300 | 19, 19, 19, 19, 19, 19, 19, 19, 19 |
| 1301 | ]; |
| 1302 | |
| 1303 | const AAC_SCF_CODEBOOK_CODES: &[u32] = &[ |
| 1304 | 0x3FFE8, 0x3FFE6, 0x3FFE7, 0x3FFE5, 0x7FFF5, 0x7FFF1, 0x7FFED, 0x7FFF6, |
| 1305 | 0x7FFEE, 0x7FFEF, 0x7FFF0, 0x7FFFC, 0x7FFFD, 0x7FFFF, 0x7FFFE, 0x7FFF7, |
| 1306 | 0x7FFF8, 0x7FFFB, 0x7FFF9, 0x3FFE4, 0x7FFFA, 0x3FFE3, 0x1FFEF, 0x1FFF0, |
| 1307 | 0x0FFF5, 0x1FFEE, 0x0FFF2, 0x0FFF3, 0x0FFF4, 0x0FFF1, 0x07FF6, 0x07FF7, |
| 1308 | 0x03FF9, 0x03FF5, 0x03FF7, 0x03FF3, 0x03FF6, 0x03FF2, 0x01FF7, 0x01FF5, |
| 1309 | 0x00FF9, 0x00FF7, 0x00FF6, 0x007F9, 0x00FF4, 0x007F8, 0x003F9, 0x003F7, |
| 1310 | 0x003F5, 0x001F8, 0x001F7, 0x000FA, 0x000F8, 0x000F6, 0x00079, 0x0003A, |
| 1311 | 0x00038, 0x0001A, 0x0000B, 0x00004, 0x00000, 0x0000A, 0x0000C, 0x0001B, |
| 1312 | 0x00039, 0x0003B, 0x00078, 0x0007A, 0x000F7, 0x000F9, 0x001F6, 0x001F9, |
| 1313 | 0x003F4, 0x003F6, 0x003F8, 0x007F5, 0x007F4, 0x007F6, 0x007F7, 0x00FF5, |
| 1314 | 0x00FF8, 0x01FF4, 0x01FF6, 0x01FF8, 0x03FF8, 0x03FF4, 0x0FFF0, 0x07FF4, |
| 1315 | 0x0FFF6, 0x07FF5, 0x3FFE2, 0x7FFD9, 0x7FFDA, 0x7FFDB, 0x7FFDC, 0x7FFDD, |
| 1316 | 0x7FFDE, 0x7FFD8, 0x7FFD2, 0x7FFD3, 0x7FFD4, 0x7FFD5, 0x7FFD6, 0x7FFF2, |
| 1317 | 0x7FFDF, 0x7FFE7, 0x7FFE8, 0x7FFE9, 0x7FFEA, 0x7FFEB, 0x7FFE6, 0x7FFE0, |
| 1318 | 0x7FFE1, 0x7FFE2, 0x7FFE3, 0x7FFE4, 0x7FFE5, 0x7FFD7, 0x7FFEC, 0x7FFF4, |
| 1319 | 0x7FFF3 |
| 1320 | ]; |
| 1321 | |
| 1322 | const AAC_SPEC_CB1_BITS: &[u8] = &[ |
| 1323 | 11, 9, 11, 10, 7, 10, 11, 9, 11, 10, 7, 10, 7, 5, 7, 9, |
| 1324 | 7, 10, 11, 9, 11, 9, 7, 9, 11, 9, 11, 9, 7, 9, 7, 5, |
| 1325 | 7, 9, 7, 9, 7, 5, 7, 5, 1, 5, 7, 5, 7, 9, 7, 9, |
| 1326 | 7, 5, 7, 9, 7, 9, 11, 9, 11, 9, 7, 9, 11, 9, 11, 10, |
| 1327 | 7, 9, 7, 5, 7, 9, 7, 10, 11, 9, 11, 10, 7, 9, 11, 9, |
| 1328 | 11 |
| 1329 | ]; |
| 1330 | const AAC_SPEC_CB1_CODES: &[u16] = &[ |
| 1331 | 0x7f8, 0x1f1, 0x7fd, 0x3f5, 0x068, 0x3f0, 0x7f7, 0x1ec, |
| 1332 | 0x7f5, 0x3f1, 0x072, 0x3f4, 0x074, 0x011, 0x076, 0x1eb, |
| 1333 | 0x06c, 0x3f6, 0x7fc, 0x1e1, 0x7f1, 0x1f0, 0x061, 0x1f6, |
| 1334 | 0x7f2, 0x1ea, 0x7fb, 0x1f2, 0x069, 0x1ed, 0x077, 0x017, |
| 1335 | 0x06f, 0x1e6, 0x064, 0x1e5, 0x067, 0x015, 0x062, 0x012, |
| 1336 | 0x000, 0x014, 0x065, 0x016, 0x06d, 0x1e9, 0x063, 0x1e4, |
| 1337 | 0x06b, 0x013, 0x071, 0x1e3, 0x070, 0x1f3, 0x7fe, 0x1e7, |
| 1338 | 0x7f3, 0x1ef, 0x060, 0x1ee, 0x7f0, 0x1e2, 0x7fa, 0x3f3, |
| 1339 | 0x06a, 0x1e8, 0x075, 0x010, 0x073, 0x1f4, 0x06e, 0x3f7, |
| 1340 | 0x7f6, 0x1e0, 0x7f9, 0x3f2, 0x066, 0x1f5, 0x7ff, 0x1f7, |
| 1341 | 0x7f4 |
| 1342 | ]; |
| 1343 | const AAC_SPEC_CB2_BITS: &[u8] = &[ |
| 1344 | 9, 7, 9, 8, 6, 8, 9, 8, 9, 8, 6, 7, 6, 5, 6, 7, |
| 1345 | 6, 8, 9, 7, 8, 8, 6, 8, 9, 7, 9, 8, 6, 7, 6, 5, |
| 1346 | 6, 7, 6, 8, 6, 5, 6, 5, 3, 5, 6, 5, 6, 8, 6, 7, |
| 1347 | 6, 5, 6, 8, 6, 8, 9, 7, 9, 8, 6, 8, 8, 7, 9, 8, |
| 1348 | 6, 7, 6, 4, 6, 8, 6, 7, 9, 7, 9, 7, 6, 8, 9, 7, |
| 1349 | 9 |
| 1350 | ]; |
| 1351 | const AAC_SPEC_CB2_CODES: &[u16] = &[ |
| 1352 | 0x1f3, 0x06f, 0x1fd, 0x0eb, 0x023, 0x0ea, 0x1f7, 0x0e8, |
| 1353 | 0x1fa, 0x0f2, 0x02d, 0x070, 0x020, 0x006, 0x02b, 0x06e, |
| 1354 | 0x028, 0x0e9, 0x1f9, 0x066, 0x0f8, 0x0e7, 0x01b, 0x0f1, |
| 1355 | 0x1f4, 0x06b, 0x1f5, 0x0ec, 0x02a, 0x06c, 0x02c, 0x00a, |
| 1356 | 0x027, 0x067, 0x01a, 0x0f5, 0x024, 0x008, 0x01f, 0x009, |
| 1357 | 0x000, 0x007, 0x01d, 0x00b, 0x030, 0x0ef, 0x01c, 0x064, |
| 1358 | 0x01e, 0x00c, 0x029, 0x0f3, 0x02f, 0x0f0, 0x1fc, 0x071, |
| 1359 | 0x1f2, 0x0f4, 0x021, 0x0e6, 0x0f7, 0x068, 0x1f8, 0x0ee, |
| 1360 | 0x022, 0x065, 0x031, 0x002, 0x026, 0x0ed, 0x025, 0x06a, |
| 1361 | 0x1fb, 0x072, 0x1fe, 0x069, 0x02e, 0x0f6, 0x1ff, 0x06d, |
| 1362 | 0x1f6 |
| 1363 | ]; |
| 1364 | const AAC_SPEC_CB3_BITS: &[u8] = &[ |
| 1365 | 1, 4, 8, 4, 5, 8, 9, 9, 10, 4, 6, 9, 6, 6, 9, 9, |
| 1366 | 9, 10, 9, 10, 13, 9, 9, 11, 11, 10, 12, 4, 6, 10, 6, 7, |
| 1367 | 10, 10, 10, 12, 5, 7, 11, 6, 7, 10, 9, 9, 11, 9, 10, 13, |
| 1368 | 8, 9, 12, 10, 11, 12, 8, 10, 15, 9, 11, 15, 13, 14, 16, 8, |
| 1369 | 10, 14, 9, 10, 14, 12, 12, 15, 11, 12, 16, 10, 11, 15, 12, 12, |
| 1370 | 15 |
| 1371 | ]; |
| 1372 | const AAC_SPEC_CB3_CODES: &[u16] = &[ |
| 1373 | 0x0000, 0x0009, 0x00ef, 0x000b, 0x0019, 0x00f0, 0x01eb, 0x01e6, |
| 1374 | 0x03f2, 0x000a, 0x0035, 0x01ef, 0x0034, 0x0037, 0x01e9, 0x01ed, |
| 1375 | 0x01e7, 0x03f3, 0x01ee, 0x03ed, 0x1ffa, 0x01ec, 0x01f2, 0x07f9, |
| 1376 | 0x07f8, 0x03f8, 0x0ff8, 0x0008, 0x0038, 0x03f6, 0x0036, 0x0075, |
| 1377 | 0x03f1, 0x03eb, 0x03ec, 0x0ff4, 0x0018, 0x0076, 0x07f4, 0x0039, |
| 1378 | 0x0074, 0x03ef, 0x01f3, 0x01f4, 0x07f6, 0x01e8, 0x03ea, 0x1ffc, |
| 1379 | 0x00f2, 0x01f1, 0x0ffb, 0x03f5, 0x07f3, 0x0ffc, 0x00ee, 0x03f7, |
| 1380 | 0x7ffe, 0x01f0, 0x07f5, 0x7ffd, 0x1ffb, 0x3ffa, 0xffff, 0x00f1, |
| 1381 | 0x03f0, 0x3ffc, 0x01ea, 0x03ee, 0x3ffb, 0x0ff6, 0x0ffa, 0x7ffc, |
| 1382 | 0x07f2, 0x0ff5, 0xfffe, 0x03f4, 0x07f7, 0x7ffb, 0x0ff7, 0x0ff9, |
| 1383 | 0x7ffa |
| 1384 | ]; |
| 1385 | const AAC_SPEC_CB4_BITS: &[u8] = &[ |
| 1386 | 4, 5, 8, 5, 4, 8, 9, 8, 11, 5, 5, 8, 5, 4, 8, 8, |
| 1387 | 7, 10, 9, 8, 11, 8, 8, 10, 11, 10, 11, 4, 5, 8, 4, 4, |
| 1388 | 8, 8, 8, 10, 4, 4, 8, 4, 4, 7, 8, 7, 9, 8, 8, 10, |
| 1389 | 7, 7, 9, 10, 9, 10, 8, 8, 11, 8, 7, 10, 11, 10, 12, 8, |
| 1390 | 7, 10, 7, 7, 9, 10, 9, 11, 11, 10, 12, 10, 9, 11, 11, 10, |
| 1391 | 11 |
| 1392 | ]; |
| 1393 | const AAC_SPEC_CB4_CODES: &[u16] = &[ |
| 1394 | 0x007, 0x016, 0x0f6, 0x018, 0x008, 0x0ef, 0x1ef, 0x0f3, |
| 1395 | 0x7f8, 0x019, 0x017, 0x0ed, 0x015, 0x001, 0x0e2, 0x0f0, |
| 1396 | 0x070, 0x3f0, 0x1ee, 0x0f1, 0x7fa, 0x0ee, 0x0e4, 0x3f2, |
| 1397 | 0x7f6, 0x3ef, 0x7fd, 0x005, 0x014, 0x0f2, 0x009, 0x004, |
| 1398 | 0x0e5, 0x0f4, 0x0e8, 0x3f4, 0x006, 0x002, 0x0e7, 0x003, |
| 1399 | 0x000, 0x06b, 0x0e3, 0x069, 0x1f3, 0x0eb, 0x0e6, 0x3f6, |
| 1400 | 0x06e, 0x06a, 0x1f4, 0x3ec, 0x1f0, 0x3f9, 0x0f5, 0x0ec, |
| 1401 | 0x7fb, 0x0ea, 0x06f, 0x3f7, 0x7f9, 0x3f3, 0xfff, 0x0e9, |
| 1402 | 0x06d, 0x3f8, 0x06c, 0x068, 0x1f5, 0x3ee, 0x1f2, 0x7f4, |
| 1403 | 0x7f7, 0x3f1, 0xffe, 0x3ed, 0x1f1, 0x7f5, 0x7fe, 0x3f5, |
| 1404 | 0x7fc |
| 1405 | ]; |
| 1406 | const AAC_SPEC_CB5_BITS: &[u8] = &[ |
| 1407 | 13, 12, 11, 11, 10, 11, 11, 12, 13, 12, 11, 10, 9, 8, 9, 10, |
| 1408 | 11, 12, 12, 10, 9, 8, 7, 8, 9, 10, 11, 11, 9, 8, 5, 4, |
| 1409 | 5, 8, 9, 11, 10, 8, 7, 4, 1, 4, 7, 8, 11, 11, 9, 8, |
| 1410 | 5, 4, 5, 8, 9, 11, 11, 10, 9, 8, 7, 8, 9, 10, 11, 12, |
| 1411 | 11, 10, 9, 8, 9, 10, 11, 12, 13, 12, 12, 11, 10, 10, 11, 12, |
| 1412 | 13 |
| 1413 | ]; |
| 1414 | const AAC_SPEC_CB5_CODES: &[u16] = &[ |
| 1415 | 0x1fff, 0x0ff7, 0x07f4, 0x07e8, 0x03f1, 0x07ee, 0x07f9, 0x0ff8, |
| 1416 | 0x1ffd, 0x0ffd, 0x07f1, 0x03e8, 0x01e8, 0x00f0, 0x01ec, 0x03ee, |
| 1417 | 0x07f2, 0x0ffa, 0x0ff4, 0x03ef, 0x01f2, 0x00e8, 0x0070, 0x00ec, |
| 1418 | 0x01f0, 0x03ea, 0x07f3, 0x07eb, 0x01eb, 0x00ea, 0x001a, 0x0008, |
| 1419 | 0x0019, 0x00ee, 0x01ef, 0x07ed, 0x03f0, 0x00f2, 0x0073, 0x000b, |
| 1420 | 0x0000, 0x000a, 0x0071, 0x00f3, 0x07e9, 0x07ef, 0x01ee, 0x00ef, |
| 1421 | 0x0018, 0x0009, 0x001b, 0x00eb, 0x01e9, 0x07ec, 0x07f6, 0x03eb, |
| 1422 | 0x01f3, 0x00ed, 0x0072, 0x00e9, 0x01f1, 0x03ed, 0x07f7, 0x0ff6, |
| 1423 | 0x07f0, 0x03e9, 0x01ed, 0x00f1, 0x01ea, 0x03ec, 0x07f8, 0x0ff9, |
| 1424 | 0x1ffc, 0x0ffc, 0x0ff5, 0x07ea, 0x03f3, 0x03f2, 0x07f5, 0x0ffb, |
| 1425 | 0x1ffe |
| 1426 | ]; |
| 1427 | const AAC_SPEC_CB6_BITS: &[u8] = &[ |
| 1428 | 11, 10, 9, 9, 9, 9, 9, 10, 11, 10, 9, 8, 7, 7, 7, 8, |
| 1429 | 9, 10, 9, 8, 6, 6, 6, 6, 6, 8, 9, 9, 7, 6, 4, 4, |
| 1430 | 4, 6, 7, 9, 9, 7, 6, 4, 4, 4, 6, 7, 9, 9, 7, 6, |
| 1431 | 4, 4, 4, 6, 7, 9, 9, 8, 6, 6, 6, 6, 6, 8, 9, 10, |
| 1432 | 9, 8, 7, 7, 7, 7, 8, 10, 11, 10, 9, 9, 9, 9, 9, 10, |
| 1433 | 11 |
| 1434 | ]; |
| 1435 | const AAC_SPEC_CB6_CODES: &[u16] = &[ |
| 1436 | 0x7fe, 0x3fd, 0x1f1, 0x1eb, 0x1f4, 0x1ea, 0x1f0, 0x3fc, |
| 1437 | 0x7fd, 0x3f6, 0x1e5, 0x0ea, 0x06c, 0x071, 0x068, 0x0f0, |
| 1438 | 0x1e6, 0x3f7, 0x1f3, 0x0ef, 0x032, 0x027, 0x028, 0x026, |
| 1439 | 0x031, 0x0eb, 0x1f7, 0x1e8, 0x06f, 0x02e, 0x008, 0x004, |
| 1440 | 0x006, 0x029, 0x06b, 0x1ee, 0x1ef, 0x072, 0x02d, 0x002, |
| 1441 | 0x000, 0x003, 0x02f, 0x073, 0x1fa, 0x1e7, 0x06e, 0x02b, |
| 1442 | 0x007, 0x001, 0x005, 0x02c, 0x06d, 0x1ec, 0x1f9, 0x0ee, |
| 1443 | 0x030, 0x024, 0x02a, 0x025, 0x033, 0x0ec, 0x1f2, 0x3f8, |
| 1444 | 0x1e4, 0x0ed, 0x06a, 0x070, 0x069, 0x074, 0x0f1, 0x3fa, |
| 1445 | 0x7ff, 0x3f9, 0x1f6, 0x1ed, 0x1f8, 0x1e9, 0x1f5, 0x3fb, |
| 1446 | 0x7fc |
| 1447 | ]; |
| 1448 | const AAC_SPEC_CB7_BITS: &[u8] = &[ |
| 1449 | 1, 3, 6, 7, 8, 9, 10, 11, 3, 4, 6, 7, 8, 8, 9, 9, |
| 1450 | 6, 6, 7, 8, 8, 9, 9, 10, 7, 7, 8, 8, 9, 9, 10, 10, |
| 1451 | 8, 8, 9, 9, 10, 10, 10, 11, 9, 8, 9, 9, 10, 10, 11, 11, |
| 1452 | 10, 9, 9, 10, 10, 11, 12, 12, 11, 10, 10, 10, 11, 11, 12, 12 |
| 1453 | ]; |
| 1454 | const AAC_SPEC_CB7_CODES: &[u16] = &[ |
| 1455 | 0x000, 0x005, 0x037, 0x074, 0x0f2, 0x1eb, 0x3ed, 0x7f7, |
| 1456 | 0x004, 0x00c, 0x035, 0x071, 0x0ec, 0x0ee, 0x1ee, 0x1f5, |
| 1457 | 0x036, 0x034, 0x072, 0x0ea, 0x0f1, 0x1e9, 0x1f3, 0x3f5, |
| 1458 | 0x073, 0x070, 0x0eb, 0x0f0, 0x1f1, 0x1f0, 0x3ec, 0x3fa, |
| 1459 | 0x0f3, 0x0ed, 0x1e8, 0x1ef, 0x3ef, 0x3f1, 0x3f9, 0x7fb, |
| 1460 | 0x1ed, 0x0ef, 0x1ea, 0x1f2, 0x3f3, 0x3f8, 0x7f9, 0x7fc, |
| 1461 | 0x3ee, 0x1ec, 0x1f4, 0x3f4, 0x3f7, 0x7f8, 0xffd, 0xffe, |
| 1462 | 0x7f6, 0x3f0, 0x3f2, 0x3f6, 0x7fa, 0x7fd, 0xffc, 0xfff |
| 1463 | ]; |
| 1464 | const AAC_SPEC_CB8_BITS: &[u8] = &[ |
| 1465 | 5, 4, 5, 6, 7, 8, 9, 10, 4, 3, 4, 5, 6, 7, 7, 8, |
| 1466 | 5, 4, 4, 5, 6, 7, 7, 8, 6, 5, 5, 6, 6, 7, 8, 8, |
| 1467 | 7, 6, 6, 6, 7, 7, 8, 9, 8, 7, 6, 7, 7, 8, 8, 10, |
| 1468 | 9, 7, 7, 8, 8, 8, 9, 9, 10, 8, 8, 8, 9, 9, 9, 10 |
| 1469 | ]; |
| 1470 | const AAC_SPEC_CB8_CODES: &[u16] = &[ |
| 1471 | 0x00e, 0x005, 0x010, 0x030, 0x06f, 0x0f1, 0x1fa, 0x3fe, |
| 1472 | 0x003, 0x000, 0x004, 0x012, 0x02c, 0x06a, 0x075, 0x0f8, |
| 1473 | 0x00f, 0x002, 0x006, 0x014, 0x02e, 0x069, 0x072, 0x0f5, |
| 1474 | 0x02f, 0x011, 0x013, 0x02a, 0x032, 0x06c, 0x0ec, 0x0fa, |
| 1475 | 0x071, 0x02b, 0x02d, 0x031, 0x06d, 0x070, 0x0f2, 0x1f9, |
| 1476 | 0x0ef, 0x068, 0x033, 0x06b, 0x06e, 0x0ee, 0x0f9, 0x3fc, |
| 1477 | 0x1f8, 0x074, 0x073, 0x0ed, 0x0f0, 0x0f6, 0x1f6, 0x1fd, |
| 1478 | 0x3fd, 0x0f3, 0x0f4, 0x0f7, 0x1f7, 0x1fb, 0x1fc, 0x3ff |
| 1479 | ]; |
| 1480 | const AAC_SPEC_CB9_BITS: &[u8] = &[ |
| 1481 | 1, 3, 6, 8, 9, 10, 10, 11, 11, 12, 12, 13, 13, 3, 4, 6, |
| 1482 | 7, 8, 8, 9, 10, 10, 10, 11, 12, 12, 6, 6, 7, 8, 8, 9, |
| 1483 | 10, 10, 10, 11, 12, 12, 12, 8, 7, 8, 9, 9, 10, 10, 11, 11, |
| 1484 | 11, 12, 12, 13, 9, 8, 9, 9, 10, 10, 11, 11, 11, 12, 12, 12, |
| 1485 | 13, 10, 9, 9, 10, 11, 11, 11, 12, 11, 12, 12, 13, 13, 11, 9, |
| 1486 | 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 11, 10, 10, 11, 11, |
| 1487 | 12, 12, 13, 13, 13, 13, 13, 13, 11, 10, 10, 11, 11, 11, 12, 12, |
| 1488 | 13, 13, 14, 13, 14, 11, 10, 11, 11, 12, 12, 12, 12, 13, 13, 14, |
| 1489 | 14, 14, 12, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 12, |
| 1490 | 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 15, 15, 13, 12, 12, 12, |
| 1491 | 13, 13, 13, 13, 14, 14, 14, 14, 15 |
| 1492 | ]; |
| 1493 | const AAC_SPEC_CB9_CODES: &[u16] = &[ |
| 1494 | 0x0000, 0x0005, 0x0037, 0x00e7, 0x01de, 0x03ce, 0x03d9, 0x07c8, |
| 1495 | 0x07cd, 0x0fc8, 0x0fdd, 0x1fe4, 0x1fec, 0x0004, 0x000c, 0x0035, |
| 1496 | 0x0072, 0x00ea, 0x00ed, 0x01e2, 0x03d1, 0x03d3, 0x03e0, 0x07d8, |
| 1497 | 0x0fcf, 0x0fd5, 0x0036, 0x0034, 0x0071, 0x00e8, 0x00ec, 0x01e1, |
| 1498 | 0x03cf, 0x03dd, 0x03db, 0x07d0, 0x0fc7, 0x0fd4, 0x0fe4, 0x00e6, |
| 1499 | 0x0070, 0x00e9, 0x01dd, 0x01e3, 0x03d2, 0x03dc, 0x07cc, 0x07ca, |
| 1500 | 0x07de, 0x0fd8, 0x0fea, 0x1fdb, 0x01df, 0x00eb, 0x01dc, 0x01e6, |
| 1501 | 0x03d5, 0x03de, 0x07cb, 0x07dd, 0x07dc, 0x0fcd, 0x0fe2, 0x0fe7, |
| 1502 | 0x1fe1, 0x03d0, 0x01e0, 0x01e4, 0x03d6, 0x07c5, 0x07d1, 0x07db, |
| 1503 | 0x0fd2, 0x07e0, 0x0fd9, 0x0feb, 0x1fe3, 0x1fe9, 0x07c4, 0x01e5, |
| 1504 | 0x03d7, 0x07c6, 0x07cf, 0x07da, 0x0fcb, 0x0fda, 0x0fe3, 0x0fe9, |
| 1505 | 0x1fe6, 0x1ff3, 0x1ff7, 0x07d3, 0x03d8, 0x03e1, 0x07d4, 0x07d9, |
| 1506 | 0x0fd3, 0x0fde, 0x1fdd, 0x1fd9, 0x1fe2, 0x1fea, 0x1ff1, 0x1ff6, |
| 1507 | 0x07d2, 0x03d4, 0x03da, 0x07c7, 0x07d7, 0x07e2, 0x0fce, 0x0fdb, |
| 1508 | 0x1fd8, 0x1fee, 0x3ff0, 0x1ff4, 0x3ff2, 0x07e1, 0x03df, 0x07c9, |
| 1509 | 0x07d6, 0x0fca, 0x0fd0, 0x0fe5, 0x0fe6, 0x1feb, 0x1fef, 0x3ff3, |
| 1510 | 0x3ff4, 0x3ff5, 0x0fe0, 0x07ce, 0x07d5, 0x0fc6, 0x0fd1, 0x0fe1, |
| 1511 | 0x1fe0, 0x1fe8, 0x1ff0, 0x3ff1, 0x3ff8, 0x3ff6, 0x7ffc, 0x0fe8, |
| 1512 | 0x07df, 0x0fc9, 0x0fd7, 0x0fdc, 0x1fdc, 0x1fdf, 0x1fed, 0x1ff5, |
| 1513 | 0x3ff9, 0x3ffb, 0x7ffd, 0x7ffe, 0x1fe7, 0x0fcc, 0x0fd6, 0x0fdf, |
| 1514 | 0x1fde, 0x1fda, 0x1fe5, 0x1ff2, 0x3ffa, 0x3ff7, 0x3ffc, 0x3ffd, |
| 1515 | 0x7fff |
| 1516 | ]; |
| 1517 | const AAC_SPEC_CB10_BITS: &[u8] = &[ |
| 1518 | 6, 5, 6, 6, 7, 8, 9, 10, 10, 10, 11, 11, 12, 5, 4, 4, |
| 1519 | 5, 6, 7, 7, 8, 8, 9, 10, 10, 11, 6, 4, 5, 5, 6, 6, |
| 1520 | 7, 8, 8, 9, 9, 10, 10, 6, 5, 5, 5, 6, 7, 7, 8, 8, |
| 1521 | 9, 9, 10, 10, 7, 6, 6, 6, 6, 7, 7, 8, 8, 9, 9, 10, |
| 1522 | 10, 8, 7, 6, 7, 7, 7, 8, 8, 8, 9, 10, 10, 11, 9, 7, |
| 1523 | 7, 7, 7, 8, 8, 9, 9, 9, 10, 10, 11, 9, 8, 8, 8, 8, |
| 1524 | 8, 9, 9, 9, 10, 10, 11, 11, 9, 8, 8, 8, 8, 8, 9, 9, |
| 1525 | 10, 10, 10, 11, 11, 10, 9, 9, 9, 9, 9, 9, 10, 10, 10, 11, |
| 1526 | 11, 12, 10, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 12, 11, |
| 1527 | 10, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 12, 11, 10, 10, 10, |
| 1528 | 10, 10, 10, 11, 11, 12, 12, 12, 12 |
| 1529 | ]; |
| 1530 | const AAC_SPEC_CB10_CODES: &[u16] = &[ |
| 1531 | 0x022, 0x008, 0x01d, 0x026, 0x05f, 0x0d3, 0x1cf, 0x3d0, |
| 1532 | 0x3d7, 0x3ed, 0x7f0, 0x7f6, 0xffd, 0x007, 0x000, 0x001, |
| 1533 | 0x009, 0x020, 0x054, 0x060, 0x0d5, 0x0dc, 0x1d4, 0x3cd, |
| 1534 | 0x3de, 0x7e7, 0x01c, 0x002, 0x006, 0x00c, 0x01e, 0x028, |
| 1535 | 0x05b, 0x0cd, 0x0d9, 0x1ce, 0x1dc, 0x3d9, 0x3f1, 0x025, |
| 1536 | 0x00b, 0x00a, 0x00d, 0x024, 0x057, 0x061, 0x0cc, 0x0dd, |
| 1537 | 0x1cc, 0x1de, 0x3d3, 0x3e7, 0x05d, 0x021, 0x01f, 0x023, |
| 1538 | 0x027, 0x059, 0x064, 0x0d8, 0x0df, 0x1d2, 0x1e2, 0x3dd, |
| 1539 | 0x3ee, 0x0d1, 0x055, 0x029, 0x056, 0x058, 0x062, 0x0ce, |
| 1540 | 0x0e0, 0x0e2, 0x1da, 0x3d4, 0x3e3, 0x7eb, 0x1c9, 0x05e, |
| 1541 | 0x05a, 0x05c, 0x063, 0x0ca, 0x0da, 0x1c7, 0x1ca, 0x1e0, |
| 1542 | 0x3db, 0x3e8, 0x7ec, 0x1e3, 0x0d2, 0x0cb, 0x0d0, 0x0d7, |
| 1543 | 0x0db, 0x1c6, 0x1d5, 0x1d8, 0x3ca, 0x3da, 0x7ea, 0x7f1, |
| 1544 | 0x1e1, 0x0d4, 0x0cf, 0x0d6, 0x0de, 0x0e1, 0x1d0, 0x1d6, |
| 1545 | 0x3d1, 0x3d5, 0x3f2, 0x7ee, 0x7fb, 0x3e9, 0x1cd, 0x1c8, |
| 1546 | 0x1cb, 0x1d1, 0x1d7, 0x1df, 0x3cf, 0x3e0, 0x3ef, 0x7e6, |
| 1547 | 0x7f8, 0xffa, 0x3eb, 0x1dd, 0x1d3, 0x1d9, 0x1db, 0x3d2, |
| 1548 | 0x3cc, 0x3dc, 0x3ea, 0x7ed, 0x7f3, 0x7f9, 0xff9, 0x7f2, |
| 1549 | 0x3ce, 0x1e4, 0x3cb, 0x3d8, 0x3d6, 0x3e2, 0x3e5, 0x7e8, |
| 1550 | 0x7f4, 0x7f5, 0x7f7, 0xffb, 0x7fa, 0x3ec, 0x3df, 0x3e1, |
| 1551 | 0x3e4, 0x3e6, 0x3f0, 0x7e9, 0x7ef, 0xff8, 0xffe, 0xffc, |
| 1552 | 0xfff |
| 1553 | ]; |
| 1554 | const AAC_SPEC_CB11_BITS: &[u8] = &[ |
| 1555 | 4, 5, 6, 7, 8, 8, 9, 10, 10, 10, 11, 11, 12, 11, 12, 12, |
| 1556 | 10, 5, 4, 5, 6, 7, 7, 8, 8, 9, 9, 9, 10, 10, 10, 10, |
| 1557 | 11, 8, 6, 5, 5, 6, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, |
| 1558 | 10, 10, 8, 7, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9, 9, 10, |
| 1559 | 10, 10, 10, 8, 8, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, |
| 1560 | 10, 10, 10, 10, 8, 8, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, |
| 1561 | 9, 10, 10, 10, 10, 8, 9, 8, 8, 8, 8, 8, 8, 8, 9, 9, |
| 1562 | 9, 10, 10, 10, 10, 10, 8, 9, 8, 8, 8, 8, 8, 8, 9, 9, |
| 1563 | 9, 10, 10, 10, 10, 10, 10, 8, 10, 9, 8, 8, 9, 9, 9, 9, |
| 1564 | 9, 10, 10, 10, 10, 10, 10, 11, 8, 10, 9, 9, 9, 9, 9, 9, |
| 1565 | 9, 10, 10, 10, 10, 10, 10, 11, 11, 8, 11, 9, 9, 9, 9, 9, |
| 1566 | 9, 10, 10, 10, 10, 10, 11, 10, 11, 11, 8, 11, 10, 9, 9, 10, |
| 1567 | 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 8, 11, 10, 10, 10, |
| 1568 | 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 9, 11, 10, 9, |
| 1569 | 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 9, 11, 10, |
| 1570 | 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 9, 12, |
| 1571 | 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 9, |
| 1572 | 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, |
| 1573 | 5 |
| 1574 | ]; |
| 1575 | const AAC_SPEC_CB11_CODES: &[u16] = &[ |
| 1576 | 0x000, 0x006, 0x019, 0x03d, 0x09c, 0x0c6, 0x1a7, 0x390, |
| 1577 | 0x3c2, 0x3df, 0x7e6, 0x7f3, 0xffb, 0x7ec, 0xffa, 0xffe, |
| 1578 | 0x38e, 0x005, 0x001, 0x008, 0x014, 0x037, 0x042, 0x092, |
| 1579 | 0x0af, 0x191, 0x1a5, 0x1b5, 0x39e, 0x3c0, 0x3a2, 0x3cd, |
| 1580 | 0x7d6, 0x0ae, 0x017, 0x007, 0x009, 0x018, 0x039, 0x040, |
| 1581 | 0x08e, 0x0a3, 0x0b8, 0x199, 0x1ac, 0x1c1, 0x3b1, 0x396, |
| 1582 | 0x3be, 0x3ca, 0x09d, 0x03c, 0x015, 0x016, 0x01a, 0x03b, |
| 1583 | 0x044, 0x091, 0x0a5, 0x0be, 0x196, 0x1ae, 0x1b9, 0x3a1, |
| 1584 | 0x391, 0x3a5, 0x3d5, 0x094, 0x09a, 0x036, 0x038, 0x03a, |
| 1585 | 0x041, 0x08c, 0x09b, 0x0b0, 0x0c3, 0x19e, 0x1ab, 0x1bc, |
| 1586 | 0x39f, 0x38f, 0x3a9, 0x3cf, 0x093, 0x0bf, 0x03e, 0x03f, |
| 1587 | 0x043, 0x045, 0x09e, 0x0a7, 0x0b9, 0x194, 0x1a2, 0x1ba, |
| 1588 | 0x1c3, 0x3a6, 0x3a7, 0x3bb, 0x3d4, 0x09f, 0x1a0, 0x08f, |
| 1589 | 0x08d, 0x090, 0x098, 0x0a6, 0x0b6, 0x0c4, 0x19f, 0x1af, |
| 1590 | 0x1bf, 0x399, 0x3bf, 0x3b4, 0x3c9, 0x3e7, 0x0a8, 0x1b6, |
| 1591 | 0x0ab, 0x0a4, 0x0aa, 0x0b2, 0x0c2, 0x0c5, 0x198, 0x1a4, |
| 1592 | 0x1b8, 0x38c, 0x3a4, 0x3c4, 0x3c6, 0x3dd, 0x3e8, 0x0ad, |
| 1593 | 0x3af, 0x192, 0x0bd, 0x0bc, 0x18e, 0x197, 0x19a, 0x1a3, |
| 1594 | 0x1b1, 0x38d, 0x398, 0x3b7, 0x3d3, 0x3d1, 0x3db, 0x7dd, |
| 1595 | 0x0b4, 0x3de, 0x1a9, 0x19b, 0x19c, 0x1a1, 0x1aa, 0x1ad, |
| 1596 | 0x1b3, 0x38b, 0x3b2, 0x3b8, 0x3ce, 0x3e1, 0x3e0, 0x7d2, |
| 1597 | 0x7e5, 0x0b7, 0x7e3, 0x1bb, 0x1a8, 0x1a6, 0x1b0, 0x1b2, |
| 1598 | 0x1b7, 0x39b, 0x39a, 0x3ba, 0x3b5, 0x3d6, 0x7d7, 0x3e4, |
| 1599 | 0x7d8, 0x7ea, 0x0ba, 0x7e8, 0x3a0, 0x1bd, 0x1b4, 0x38a, |
| 1600 | 0x1c4, 0x392, 0x3aa, 0x3b0, 0x3bc, 0x3d7, 0x7d4, 0x7dc, |
| 1601 | 0x7db, 0x7d5, 0x7f0, 0x0c1, 0x7fb, 0x3c8, 0x3a3, 0x395, |
| 1602 | 0x39d, 0x3ac, 0x3ae, 0x3c5, 0x3d8, 0x3e2, 0x3e6, 0x7e4, |
| 1603 | 0x7e7, 0x7e0, 0x7e9, 0x7f7, 0x190, 0x7f2, 0x393, 0x1be, |
| 1604 | 0x1c0, 0x394, 0x397, 0x3ad, 0x3c3, 0x3c1, 0x3d2, 0x7da, |
| 1605 | 0x7d9, 0x7df, 0x7eb, 0x7f4, 0x7fa, 0x195, 0x7f8, 0x3bd, |
| 1606 | 0x39c, 0x3ab, 0x3a8, 0x3b3, 0x3b9, 0x3d0, 0x3e3, 0x3e5, |
| 1607 | 0x7e2, 0x7de, 0x7ed, 0x7f1, 0x7f9, 0x7fc, 0x193, 0xffd, |
| 1608 | 0x3dc, 0x3b6, 0x3c7, 0x3cc, 0x3cb, 0x3d9, 0x3da, 0x7d3, |
| 1609 | 0x7e1, 0x7ee, 0x7ef, 0x7f5, 0x7f6, 0xffc, 0xfff, 0x19d, |
| 1610 | 0x1c2, 0x0b5, 0x0a1, 0x096, 0x097, 0x095, 0x099, 0x0a0, |
| 1611 | 0x0a2, 0x0ac, 0x0a9, 0x0b1, 0x0b3, 0x0bb, 0x0c0, 0x18f, |
| 1612 | 0x004 |
| 1613 | ]; |
| 1614 | |
| 1615 | const AAC_SPEC_BITS: [&[u8]; 11] = [ |
| 1616 | AAC_SPEC_CB1_BITS, AAC_SPEC_CB2_BITS, AAC_SPEC_CB3_BITS, AAC_SPEC_CB4_BITS, |
| 1617 | AAC_SPEC_CB5_BITS, AAC_SPEC_CB6_BITS, AAC_SPEC_CB7_BITS, AAC_SPEC_CB8_BITS, |
| 1618 | AAC_SPEC_CB9_BITS, AAC_SPEC_CB10_BITS, AAC_SPEC_CB11_BITS |
| 1619 | ]; |
| 1620 | const AAC_SPEC_CODES: [&[u16]; 11] = [ |
| 1621 | AAC_SPEC_CB1_CODES, AAC_SPEC_CB2_CODES, AAC_SPEC_CB3_CODES, AAC_SPEC_CB4_CODES, |
| 1622 | AAC_SPEC_CB5_CODES, AAC_SPEC_CB6_CODES, AAC_SPEC_CB7_CODES, AAC_SPEC_CB8_CODES, |
| 1623 | AAC_SPEC_CB9_CODES, AAC_SPEC_CB10_CODES, AAC_SPEC_CB11_CODES |
| 1624 | ]; |
| 1625 | const AAC_UNSIGNED_CODEBOOK: [bool; 11] = [ |
| 1626 | false, false, true, true, false, false, true, true, true, true, true |
| 1627 | ]; |
| 1628 | const AAC_CODEBOOK_MODULO: [u16; 7] = [ |
| 1629 | 9, 9, 8, 8, 13, 13, 17 |
| 1630 | ]; |
| 1631 | |
| 1632 | const AAC_QUADS: [[i8; 4]; 81] = [ |
| 1633 | [ 0, 0, 0, 0 ], [ 0, 0, 0, 1 ], [ 0, 0, 0, 2 ], |
| 1634 | [ 0, 0, 1, 0 ], [ 0, 0, 1, 1 ], [ 0, 0, 1, 2 ], |
| 1635 | [ 0, 0, 2, 0 ], [ 0, 0, 2, 1 ], [ 0, 0, 2, 2 ], |
| 1636 | [ 0, 1, 0, 0 ], [ 0, 1, 0, 1 ], [ 0, 1, 0, 2 ], |
| 1637 | [ 0, 1, 1, 0 ], [ 0, 1, 1, 1 ], [ 0, 1, 1, 2 ], |
| 1638 | [ 0, 1, 2, 0 ], [ 0, 1, 2, 1 ], [ 0, 1, 2, 2 ], |
| 1639 | [ 0, 2, 0, 0 ], [ 0, 2, 0, 1 ], [ 0, 2, 0, 2 ], |
| 1640 | [ 0, 2, 1, 0 ], [ 0, 2, 1, 1 ], [ 0, 2, 1, 2 ], |
| 1641 | [ 0, 2, 2, 0 ], [ 0, 2, 2, 1 ], [ 0, 2, 2, 2 ], |
| 1642 | [ 1, 0, 0, 0 ], [ 1, 0, 0, 1 ], [ 1, 0, 0, 2 ], |
| 1643 | [ 1, 0, 1, 0 ], [ 1, 0, 1, 1 ], [ 1, 0, 1, 2 ], |
| 1644 | [ 1, 0, 2, 0 ], [ 1, 0, 2, 1 ], [ 1, 0, 2, 2 ], |
| 1645 | [ 1, 1, 0, 0 ], [ 1, 1, 0, 1 ], [ 1, 1, 0, 2 ], |
| 1646 | [ 1, 1, 1, 0 ], [ 1, 1, 1, 1 ], [ 1, 1, 1, 2 ], |
| 1647 | [ 1, 1, 2, 0 ], [ 1, 1, 2, 1 ], [ 1, 1, 2, 2 ], |
| 1648 | [ 1, 2, 0, 0 ], [ 1, 2, 0, 1 ], [ 1, 2, 0, 2 ], |
| 1649 | [ 1, 2, 1, 0 ], [ 1, 2, 1, 1 ], [ 1, 2, 1, 2 ], |
| 1650 | [ 1, 2, 2, 0 ], [ 1, 2, 2, 1 ], [ 1, 2, 2, 2 ], |
| 1651 | [ 2, 0, 0, 0 ], [ 2, 0, 0, 1 ], [ 2, 0, 0, 2 ], |
| 1652 | [ 2, 0, 1, 0 ], [ 2, 0, 1, 1 ], [ 2, 0, 1, 2 ], |
| 1653 | [ 2, 0, 2, 0 ], [ 2, 0, 2, 1 ], [ 2, 0, 2, 2 ], |
| 1654 | [ 2, 1, 0, 0 ], [ 2, 1, 0, 1 ], [ 2, 1, 0, 2 ], |
| 1655 | [ 2, 1, 1, 0 ], [ 2, 1, 1, 1 ], [ 2, 1, 1, 2 ], |
| 1656 | [ 2, 1, 2, 0 ], [ 2, 1, 2, 1 ], [ 2, 1, 2, 2 ], |
| 1657 | [ 2, 2, 0, 0 ], [ 2, 2, 0, 1 ], [ 2, 2, 0, 2 ], |
| 1658 | [ 2, 2, 1, 0 ], [ 2, 2, 1, 1 ], [ 2, 2, 1, 2 ], |
| 1659 | [ 2, 2, 2, 0 ], [ 2, 2, 2, 1 ], [ 2, 2, 2, 2 ], |
| 1660 | ]; |
| 1661 | |
| 1662 | const DEFAULT_CHANNEL_MAP: [&str; 9] = [ |
| 1663 | "", |
| 1664 | "C", |
| 1665 | "L,R", |
| 1666 | "C,L,R", |
| 1667 | "C,L,R,Cs", |
| 1668 | "C,L,R,Ls,Rs", |
| 1669 | "C,L,R,Ls,Rs,LFE", |
| 1670 | "", |
| 1671 | "C,L,R,Ls,Rs,Lss,Rss,LFE", |
| 1672 | ]; |
| 1673 | |
| 1674 | const SWB_OFFSET_48K_LONG: [usize; 49+1] = [ |
| 1675 | 0, 4, 8, 12, 16, 20, 24, 28, |
| 1676 | 32, 36, 40, 48, 56, 64, 72, 80, |
| 1677 | 88, 96, 108, 120, 132, 144, 160, 176, |
| 1678 | 196, 216, 240, 264, 292, 320, 352, 384, |
| 1679 | 416, 448, 480, 512, 544, 576, 608, 640, |
| 1680 | 672, 704, 736, 768, 800, 832, 864, 896, |
| 1681 | 928, 1024 |
| 1682 | ]; |
| 1683 | const SWB_OFFSET_48K_SHORT: [usize; 14+1] = [ |
| 1684 | 0, 4, 8, 12, 16, 20, 28, 36, 44, 56, 68, 80, 96, 112, 128 |
| 1685 | ]; |
| 1686 | const SWB_OFFSET_32K_LONG: [usize; 51+1] = [ |
| 1687 | 0, 4, 8, 12, 16, 20, 24, 28, |
| 1688 | 32, 36, 40, 48, 56, 64, 72, 80, |
| 1689 | 88, 96, 108, 120, 132, 144, 160, 176, |
| 1690 | 196, 216, 240, 264, 292, 320, 352, 384, |
| 1691 | 416, 448, 480, 512, 544, 576, 608, 640, |
| 1692 | 672, 704, 736, 768, 800, 832, 864, 896, |
| 1693 | 928, 960, 992, 1024 |
| 1694 | ]; |
| 1695 | const SWB_OFFSET_8K_LONG: [usize; 40+1] = [ |
| 1696 | 0, 12, 24, 36, 48, 60, 72, 84, |
| 1697 | 96, 108, 120, 132, 144, 156, 172, 188, |
| 1698 | 204, 220, 236, 252, 268, 288, 308, 328, |
| 1699 | 348, 372, 396, 420, 448, 476, 508, 544, |
| 1700 | 580, 620, 664, 712, 764, 820, 880, 944, |
| 1701 | 1024 |
| 1702 | ]; |
| 1703 | const SWB_OFFSET_8K_SHORT: [usize; 15+1] = [ |
| 1704 | 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 60, 72, 88, 108, 128 |
| 1705 | ]; |
| 1706 | const SWB_OFFSET_16K_LONG: [usize; 43+1] = [ |
| 1707 | 0, 8, 16, 24, 32, 40, 48, 56, |
| 1708 | 64, 72, 80, 88, 100, 112, 124, 136, |
| 1709 | 148, 160, 172, 184, 196, 212, 228, 244, |
| 1710 | 260, 280, 300, 320, 344, 368, 396, 424, |
| 1711 | 456, 492, 532, 572, 616, 664, 716, 772, |
| 1712 | 832, 896, 960, 1024 |
| 1713 | ]; |
| 1714 | const SWB_OFFSET_16K_SHORT: [usize; 15+1] = [ |
| 1715 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 60, 72, 88, 108, 128 |
| 1716 | ]; |
| 1717 | const SWB_OFFSET_24K_LONG: [usize; 47+1] = [ |
| 1718 | 0, 4, 8, 12, 16, 20, 24, 28, |
| 1719 | 32, 36, 40, 44, 52, 60, 68, 76, |
| 1720 | 84, 92, 100, 108, 116, 124, 136, 148, |
| 1721 | 160, 172, 188, 204, 220, 240, 260, 284, |
| 1722 | 308, 336, 364, 396, 432, 468, 508, 552, |
| 1723 | 600, 652, 704, 768, 832, 896, 960, 1024 |
| 1724 | ]; |
| 1725 | const SWB_OFFSET_24K_SHORT: [usize; 15+1] = [ |
| 1726 | 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 64, 76, 92, 108, 128 |
| 1727 | ]; |
| 1728 | const SWB_OFFSET_64K_LONG: [usize; 47+1] = [ |
| 1729 | 0, 4, 8, 12, 16, 20, 24, 28, |
| 1730 | 32, 36, 40, 44, 48, 52, 56, 64, |
| 1731 | 72, 80, 88, 100, 112, 124, 140, 156, |
| 1732 | 172, 192, 216, 240, 268, 304, 344, 384, |
| 1733 | 424, 464, 504, 544, 584, 624, 664, 704, |
| 1734 | 744, 784, 824, 864, 904, 944, 984, 1024 |
| 1735 | ]; |
| 1736 | const SWB_OFFSET_64K_SHORT: [usize; 12+1] = [ |
| 1737 | 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128 |
| 1738 | ]; |
| 1739 | const SWB_OFFSET_96K_LONG: [usize; 41+1] = [ |
| 1740 | 0, 4, 8, 12, 16, 20, 24, 28, |
| 1741 | 32, 36, 40, 44, 48, 52, 56, 64, |
| 1742 | 72, 80, 88, 96, 108, 120, 132, 144, |
| 1743 | 156, 172, 188, 212, 240, 276, 320, 384, |
| 1744 | 448, 512, 576, 640, 704, 768, 832, 896, |
| 1745 | 960, 1024 |
| 1746 | ]; |
| 1747 | |
| 1748 | #[derive(Clone,Copy)] |
| 1749 | struct GASubbandInfo { |
| 1750 | min_srate: u32, |
| 1751 | long_bands: &'static [usize], |
| 1752 | short_bands: &'static [usize], |
| 1753 | } |
| 1754 | |
| 1755 | impl GASubbandInfo { |
| 1756 | fn find(srate: u32) -> GASubbandInfo { |
| 1757 | for sbi in AAC_SUBBAND_INFO.iter() { |
| 1758 | if srate >= sbi.min_srate { |
| 1759 | return *sbi; |
| 1760 | } |
| 1761 | } |
| 1762 | unreachable!("") |
| 1763 | } |
| 1764 | fn find_idx(srate: u32) -> usize { |
| 1765 | for (i, sbi) in AAC_SUBBAND_INFO.iter().enumerate() { |
| 1766 | if srate >= sbi.min_srate { |
| 1767 | return i; |
| 1768 | } |
| 1769 | } |
| 1770 | unreachable!("") |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | const AAC_SUBBAND_INFO: [GASubbandInfo; 12] = [ |
| 1775 | GASubbandInfo { min_srate: 92017, long_bands: &SWB_OFFSET_96K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //96K |
| 1776 | GASubbandInfo { min_srate: 75132, long_bands: &SWB_OFFSET_96K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //88.2K |
| 1777 | GASubbandInfo { min_srate: 55426, long_bands: &SWB_OFFSET_64K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //64K |
| 1778 | GASubbandInfo { min_srate: 46009, long_bands: &SWB_OFFSET_48K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //48K |
| 1779 | GASubbandInfo { min_srate: 37566, long_bands: &SWB_OFFSET_48K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //44.1K |
| 1780 | GASubbandInfo { min_srate: 27713, long_bands: &SWB_OFFSET_32K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //32K |
| 1781 | GASubbandInfo { min_srate: 23004, long_bands: &SWB_OFFSET_24K_LONG, short_bands: &SWB_OFFSET_24K_SHORT }, //24K |
| 1782 | GASubbandInfo { min_srate: 18783, long_bands: &SWB_OFFSET_24K_LONG, short_bands: &SWB_OFFSET_24K_SHORT }, //22.05K |
| 1783 | GASubbandInfo { min_srate: 13856, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //16K |
| 1784 | GASubbandInfo { min_srate: 11502, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //12K |
| 1785 | GASubbandInfo { min_srate: 9391, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //11.025K |
| 1786 | GASubbandInfo { min_srate: 0, long_bands: &SWB_OFFSET_8K_LONG, short_bands: &SWB_OFFSET_8K_SHORT }, //8K |
| 1787 | ]; |