X-Git-Url: https://git.nihav.org/?p=nihav.git;a=blobdiff_plain;f=nihav-mpeg%2Fsrc%2Fcodecs%2Faac%2Fcoeff_read.rs;fp=nihav-mpeg%2Fsrc%2Fcodecs%2Faac%2Fcoeff_read.rs;h=d195b394f8b37b3a7314991c59db696deb64afd6;hp=0000000000000000000000000000000000000000;hb=999c25f70cce9929567ece9cb285a900f56727f7;hpb=2826a23f3a214e2f5d47d6dee6fb06754730dc0e diff --git a/nihav-mpeg/src/codecs/aac/coeff_read.rs b/nihav-mpeg/src/codecs/aac/coeff_read.rs new file mode 100644 index 0000000..d195b39 --- /dev/null +++ b/nihav-mpeg/src/codecs/aac/coeff_read.rs @@ -0,0 +1,567 @@ +use nihav_core::codecs::{DecoderResult, DecoderError}; +use nihav_core::io::bitreader::*; +use nihav_core::io::codebook::*; +use nihav_core::io::intcode::*; +use std::mem; +use std::ptr; +use super::{INTENSITY_SCALE_MIN, MAX_WINDOWS, MAX_SFBS, GASubbandInfo, ICSInfo}; + +pub const ZERO_HCB: u8 = 0; +pub const FIRST_PAIR_HCB: u8 = 5; +pub const ESC_HCB: u8 = 11; +pub const RESERVED_HCB: u8 = 12; +pub const NOISE_HCB: u8 = 13; +pub const INTENSITY_HCB2: u8 = 14; +pub const INTENSITY_HCB: u8 = 15; + +pub struct Codebooks { + pub scale_cb: Codebook, + pub spec_cb: [Codebook; 11], +} + +fn scale_map(idx: usize) -> i8 { (idx as i8) - 60 } +fn cb_map(idx: usize) -> u16 { idx as u16 } + +impl Codebooks { + pub fn new() -> Self { + let mut coderead = TableCodebookDescReader::new(AAC_SCF_CODEBOOK_CODES, AAC_SCF_CODEBOOK_BITS, scale_map); + let scale_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); + let spec_cb = unsafe { + let mut uspec_cb: mem::MaybeUninit::<[Codebook; 11]> = mem::MaybeUninit::uninit(); + for i in 0..AAC_SPEC_CODES.len() { + let mut coderead = TableCodebookDescReader::new(AAC_SPEC_CODES[i], AAC_SPEC_BITS[i], cb_map); + ptr::write(&mut (*uspec_cb.as_mut_ptr())[i], Codebook::new(&mut coderead, CodebookMode::MSB).unwrap()); + } + uspec_cb.assume_init() + }; + Self { scale_cb, spec_cb } + } +} + +pub fn get_scale(scale: u8) -> f32 { + 2.0f32.powf(0.25 * (f32::from(scale) - 100.0 - 56.0)) +} +pub fn iquant(val: f32) -> f32 { + if val < 0.0 { + -((-val).powf(4.0 / 3.0)) + } else { + val.powf(4.0 / 3.0) + } +} +pub fn requant(val: f32, scale: f32) -> f32 { + if scale == 0.0 { return 0.0; } + let bval = val / scale; + if bval >= 0.0 { + val.powf(3.0 / 4.0) + } else { + -((-val).powf(3.0 / 4.0)) + } +} +fn decode_quads(br: &mut BitReader, cb: &Codebook, unsigned: bool, scale: f32, dst: &mut [f32]) -> DecoderResult<()> { + for out in dst.chunks_mut(4) { + let cw = br.read_cb(cb)? as usize; + if unsigned { + for i in 0..4 { + let val = AAC_QUADS[cw][i]; + if val != 0 { + if br.read_bool()? { + out[i] = iquant(-f32::from(val)) * scale; + } else { + out[i] = iquant( f32::from(val)) * scale; + } + } + } + } else { + for i in 0..4 { + out[i] = iquant(f32::from(AAC_QUADS[cw][i] - 1)) * scale; + } + } + } + Ok(()) +} +fn decode_pairs(br: &mut BitReader, cb: &Codebook, unsigned: bool, escape: bool, modulo: u16, scale: f32, dst: &mut [f32]) -> DecoderResult<()> { + for out in dst.chunks_mut(2) { + let cw = br.read_cb(cb)?; + let mut x = (cw / modulo) as i16; + let mut y = (cw % modulo) as i16; + if unsigned { + if x != 0 && br.read_bool()? { + x = -x; + } + if y != 0 && br.read_bool()? { + y = -y; + } + } else { + x -= (modulo >> 1) as i16; + y -= (modulo >> 1) as i16; + } + if escape { + if (x == 16) || (x == -16) { + x += read_escape(br, x > 0)?; + } + if (y == 16) || (y == -16) { + y += read_escape(br, y > 0)?; + } + } + out[0] = iquant(f32::from(x)) * scale; + out[1] = iquant(f32::from(y)) * scale; + } + Ok(()) +} +fn read_escape(br: &mut BitReader, sign: bool) -> DecoderResult { + let prefix = br.read_code(UintCodeType::UnaryOnes)? as u8; + validate!(prefix < 9); + let bits = br.read(prefix + 4)? as i16; + let bits = bits | (1 << (prefix + 4)); + if sign { + Ok(bits) + } else { + Ok(-bits) + } +} + +fn get_band_start(info: &ICSInfo, sbinfo: &GASubbandInfo, swb: usize) -> usize { + if info.long_win { + sbinfo.long_bands[swb] + } else { + sbinfo.short_bands[swb] + } +} + +const NOISE_SCALE_MIN: i16 = -100; + +pub fn decode_scale_factor_data(br: &mut BitReader, scales: &mut [[u8; MAX_SFBS]; MAX_WINDOWS], global_gain: u8, info: &ICSInfo, sfb_cb: &[[u8; MAX_SFBS]; MAX_WINDOWS], codebooks: &Codebooks) -> DecoderResult<()> { + let mut noise_pcm_flag = true; + let mut scf_normal = i16::from(global_gain); + let mut scf_intensity = 0i16; + let mut scf_noise = 0i16; + for g in 0..info.window_groups { + for sfb in 0..info.max_sfb { + if sfb_cb[g][sfb] != ZERO_HCB { + if (sfb_cb[g][sfb] == INTENSITY_HCB) || (sfb_cb[g][sfb] == INTENSITY_HCB2) { + let diff = i16::from(br.read_cb(&codebooks.scale_cb)?); + scf_intensity += diff; + validate!((scf_intensity >= INTENSITY_SCALE_MIN) && (scf_intensity < INTENSITY_SCALE_MIN + 256)); + scales[g][sfb] = (scf_intensity - INTENSITY_SCALE_MIN) as u8; + } else if sfb_cb[g][sfb] == NOISE_HCB { + if noise_pcm_flag { + noise_pcm_flag = false; + scf_noise = (br.read(9)? as i16) - 256 + i16::from(global_gain) - 90; + } else { + scf_noise += i16::from(br.read_cb(&codebooks.scale_cb)?); + } + validate!((scf_noise >= NOISE_SCALE_MIN) && (scf_noise < NOISE_SCALE_MIN + 256)); + scales[g][sfb] = (scf_noise - NOISE_SCALE_MIN) as u8; + } else { + scf_normal += i16::from(br.read_cb(&codebooks.scale_cb)?); + validate!((scf_normal >= 0) && (scf_normal < 255)); + scales[g][sfb] = scf_normal as u8; + } + } + } + } + Ok(()) +} + +pub fn decode_spectrum(br: &mut BitReader, coeffs: &mut [f32; 1024], scales: &[[u8; MAX_SFBS]; MAX_WINDOWS], info: &ICSInfo, sbinfo: &GASubbandInfo, sfb_cb: &[[u8; MAX_SFBS]; MAX_WINDOWS], codebooks: &Codebooks) -> DecoderResult<()> { + for g in 0..info.window_groups { + let cur_w = info.get_group_start(g); + let next_w = info.get_group_start(g + 1); + for sfb in 0..info.max_sfb { + let start = get_band_start(info, sbinfo, sfb); + let end = get_band_start(info, sbinfo, sfb + 1); + let cb_idx = sfb_cb[g][sfb]; + for w in cur_w..next_w { + let dst = &mut coeffs[start + w*128..end + w*128]; + match cb_idx { + ZERO_HCB => { /* zeroes */ }, + NOISE_HCB => { /* noise */ }, + INTENSITY_HCB | INTENSITY_HCB2 => { /* intensity */ }, + _ => { + let unsigned = AAC_UNSIGNED_CODEBOOK[(cb_idx - 1) as usize]; + let scale = get_scale(scales[g][sfb]); + let cb = &codebooks.spec_cb[(cb_idx - 1) as usize]; + if cb_idx < FIRST_PAIR_HCB { + decode_quads(br, cb, unsigned, scale, dst)?; + } else { + decode_pairs(br, cb, unsigned, cb_idx == ESC_HCB, + AAC_CODEBOOK_MODULO[(cb_idx - FIRST_PAIR_HCB) as usize], scale, dst)?; + } + }, + }; + } + } + } + Ok(()) +} + +const AAC_SCF_CODEBOOK_BITS: &[u8] = &[ + 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, + 19, 19, 19, 18, 19, 18, 17, 17, 16, 17, 16, 16, 16, 16, 15, 15, + 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 12, 11, 12, 11, 10, 10, + 10, 9, 9, 8, 8, 8, 7, 6, 6, 5, 4, 3, 1, 4, 4, 5, + 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 10, 11, 11, 11, 11, 12, + 12, 13, 13, 13, 14, 14, 16, 15, 16, 15, 18, 19, 19, 19, 19, 19, + 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, + 19, 19, 19, 19, 19, 19, 19, 19, 19 +]; + +const AAC_SCF_CODEBOOK_CODES: &[u32] = &[ + 0x3FFE8, 0x3FFE6, 0x3FFE7, 0x3FFE5, 0x7FFF5, 0x7FFF1, 0x7FFED, 0x7FFF6, + 0x7FFEE, 0x7FFEF, 0x7FFF0, 0x7FFFC, 0x7FFFD, 0x7FFFF, 0x7FFFE, 0x7FFF7, + 0x7FFF8, 0x7FFFB, 0x7FFF9, 0x3FFE4, 0x7FFFA, 0x3FFE3, 0x1FFEF, 0x1FFF0, + 0x0FFF5, 0x1FFEE, 0x0FFF2, 0x0FFF3, 0x0FFF4, 0x0FFF1, 0x07FF6, 0x07FF7, + 0x03FF9, 0x03FF5, 0x03FF7, 0x03FF3, 0x03FF6, 0x03FF2, 0x01FF7, 0x01FF5, + 0x00FF9, 0x00FF7, 0x00FF6, 0x007F9, 0x00FF4, 0x007F8, 0x003F9, 0x003F7, + 0x003F5, 0x001F8, 0x001F7, 0x000FA, 0x000F8, 0x000F6, 0x00079, 0x0003A, + 0x00038, 0x0001A, 0x0000B, 0x00004, 0x00000, 0x0000A, 0x0000C, 0x0001B, + 0x00039, 0x0003B, 0x00078, 0x0007A, 0x000F7, 0x000F9, 0x001F6, 0x001F9, + 0x003F4, 0x003F6, 0x003F8, 0x007F5, 0x007F4, 0x007F6, 0x007F7, 0x00FF5, + 0x00FF8, 0x01FF4, 0x01FF6, 0x01FF8, 0x03FF8, 0x03FF4, 0x0FFF0, 0x07FF4, + 0x0FFF6, 0x07FF5, 0x3FFE2, 0x7FFD9, 0x7FFDA, 0x7FFDB, 0x7FFDC, 0x7FFDD, + 0x7FFDE, 0x7FFD8, 0x7FFD2, 0x7FFD3, 0x7FFD4, 0x7FFD5, 0x7FFD6, 0x7FFF2, + 0x7FFDF, 0x7FFE7, 0x7FFE8, 0x7FFE9, 0x7FFEA, 0x7FFEB, 0x7FFE6, 0x7FFE0, + 0x7FFE1, 0x7FFE2, 0x7FFE3, 0x7FFE4, 0x7FFE5, 0x7FFD7, 0x7FFEC, 0x7FFF4, + 0x7FFF3 +]; + +const AAC_SPEC_CB1_BITS: &[u8] = &[ + 11, 9, 11, 10, 7, 10, 11, 9, 11, 10, 7, 10, 7, 5, 7, 9, + 7, 10, 11, 9, 11, 9, 7, 9, 11, 9, 11, 9, 7, 9, 7, 5, + 7, 9, 7, 9, 7, 5, 7, 5, 1, 5, 7, 5, 7, 9, 7, 9, + 7, 5, 7, 9, 7, 9, 11, 9, 11, 9, 7, 9, 11, 9, 11, 10, + 7, 9, 7, 5, 7, 9, 7, 10, 11, 9, 11, 10, 7, 9, 11, 9, + 11 +]; +const AAC_SPEC_CB1_CODES: &[u16] = &[ + 0x7f8, 0x1f1, 0x7fd, 0x3f5, 0x068, 0x3f0, 0x7f7, 0x1ec, + 0x7f5, 0x3f1, 0x072, 0x3f4, 0x074, 0x011, 0x076, 0x1eb, + 0x06c, 0x3f6, 0x7fc, 0x1e1, 0x7f1, 0x1f0, 0x061, 0x1f6, + 0x7f2, 0x1ea, 0x7fb, 0x1f2, 0x069, 0x1ed, 0x077, 0x017, + 0x06f, 0x1e6, 0x064, 0x1e5, 0x067, 0x015, 0x062, 0x012, + 0x000, 0x014, 0x065, 0x016, 0x06d, 0x1e9, 0x063, 0x1e4, + 0x06b, 0x013, 0x071, 0x1e3, 0x070, 0x1f3, 0x7fe, 0x1e7, + 0x7f3, 0x1ef, 0x060, 0x1ee, 0x7f0, 0x1e2, 0x7fa, 0x3f3, + 0x06a, 0x1e8, 0x075, 0x010, 0x073, 0x1f4, 0x06e, 0x3f7, + 0x7f6, 0x1e0, 0x7f9, 0x3f2, 0x066, 0x1f5, 0x7ff, 0x1f7, + 0x7f4 +]; +const AAC_SPEC_CB2_BITS: &[u8] = &[ + 9, 7, 9, 8, 6, 8, 9, 8, 9, 8, 6, 7, 6, 5, 6, 7, + 6, 8, 9, 7, 8, 8, 6, 8, 9, 7, 9, 8, 6, 7, 6, 5, + 6, 7, 6, 8, 6, 5, 6, 5, 3, 5, 6, 5, 6, 8, 6, 7, + 6, 5, 6, 8, 6, 8, 9, 7, 9, 8, 6, 8, 8, 7, 9, 8, + 6, 7, 6, 4, 6, 8, 6, 7, 9, 7, 9, 7, 6, 8, 9, 7, + 9 +]; +const AAC_SPEC_CB2_CODES: &[u16] = &[ + 0x1f3, 0x06f, 0x1fd, 0x0eb, 0x023, 0x0ea, 0x1f7, 0x0e8, + 0x1fa, 0x0f2, 0x02d, 0x070, 0x020, 0x006, 0x02b, 0x06e, + 0x028, 0x0e9, 0x1f9, 0x066, 0x0f8, 0x0e7, 0x01b, 0x0f1, + 0x1f4, 0x06b, 0x1f5, 0x0ec, 0x02a, 0x06c, 0x02c, 0x00a, + 0x027, 0x067, 0x01a, 0x0f5, 0x024, 0x008, 0x01f, 0x009, + 0x000, 0x007, 0x01d, 0x00b, 0x030, 0x0ef, 0x01c, 0x064, + 0x01e, 0x00c, 0x029, 0x0f3, 0x02f, 0x0f0, 0x1fc, 0x071, + 0x1f2, 0x0f4, 0x021, 0x0e6, 0x0f7, 0x068, 0x1f8, 0x0ee, + 0x022, 0x065, 0x031, 0x002, 0x026, 0x0ed, 0x025, 0x06a, + 0x1fb, 0x072, 0x1fe, 0x069, 0x02e, 0x0f6, 0x1ff, 0x06d, + 0x1f6 +]; +const AAC_SPEC_CB3_BITS: &[u8] = &[ + 1, 4, 8, 4, 5, 8, 9, 9, 10, 4, 6, 9, 6, 6, 9, 9, + 9, 10, 9, 10, 13, 9, 9, 11, 11, 10, 12, 4, 6, 10, 6, 7, + 10, 10, 10, 12, 5, 7, 11, 6, 7, 10, 9, 9, 11, 9, 10, 13, + 8, 9, 12, 10, 11, 12, 8, 10, 15, 9, 11, 15, 13, 14, 16, 8, + 10, 14, 9, 10, 14, 12, 12, 15, 11, 12, 16, 10, 11, 15, 12, 12, + 15 +]; +const AAC_SPEC_CB3_CODES: &[u16] = &[ + 0x0000, 0x0009, 0x00ef, 0x000b, 0x0019, 0x00f0, 0x01eb, 0x01e6, + 0x03f2, 0x000a, 0x0035, 0x01ef, 0x0034, 0x0037, 0x01e9, 0x01ed, + 0x01e7, 0x03f3, 0x01ee, 0x03ed, 0x1ffa, 0x01ec, 0x01f2, 0x07f9, + 0x07f8, 0x03f8, 0x0ff8, 0x0008, 0x0038, 0x03f6, 0x0036, 0x0075, + 0x03f1, 0x03eb, 0x03ec, 0x0ff4, 0x0018, 0x0076, 0x07f4, 0x0039, + 0x0074, 0x03ef, 0x01f3, 0x01f4, 0x07f6, 0x01e8, 0x03ea, 0x1ffc, + 0x00f2, 0x01f1, 0x0ffb, 0x03f5, 0x07f3, 0x0ffc, 0x00ee, 0x03f7, + 0x7ffe, 0x01f0, 0x07f5, 0x7ffd, 0x1ffb, 0x3ffa, 0xffff, 0x00f1, + 0x03f0, 0x3ffc, 0x01ea, 0x03ee, 0x3ffb, 0x0ff6, 0x0ffa, 0x7ffc, + 0x07f2, 0x0ff5, 0xfffe, 0x03f4, 0x07f7, 0x7ffb, 0x0ff7, 0x0ff9, + 0x7ffa +]; +const AAC_SPEC_CB4_BITS: &[u8] = &[ + 4, 5, 8, 5, 4, 8, 9, 8, 11, 5, 5, 8, 5, 4, 8, 8, + 7, 10, 9, 8, 11, 8, 8, 10, 11, 10, 11, 4, 5, 8, 4, 4, + 8, 8, 8, 10, 4, 4, 8, 4, 4, 7, 8, 7, 9, 8, 8, 10, + 7, 7, 9, 10, 9, 10, 8, 8, 11, 8, 7, 10, 11, 10, 12, 8, + 7, 10, 7, 7, 9, 10, 9, 11, 11, 10, 12, 10, 9, 11, 11, 10, + 11 +]; +const AAC_SPEC_CB4_CODES: &[u16] = &[ + 0x007, 0x016, 0x0f6, 0x018, 0x008, 0x0ef, 0x1ef, 0x0f3, + 0x7f8, 0x019, 0x017, 0x0ed, 0x015, 0x001, 0x0e2, 0x0f0, + 0x070, 0x3f0, 0x1ee, 0x0f1, 0x7fa, 0x0ee, 0x0e4, 0x3f2, + 0x7f6, 0x3ef, 0x7fd, 0x005, 0x014, 0x0f2, 0x009, 0x004, + 0x0e5, 0x0f4, 0x0e8, 0x3f4, 0x006, 0x002, 0x0e7, 0x003, + 0x000, 0x06b, 0x0e3, 0x069, 0x1f3, 0x0eb, 0x0e6, 0x3f6, + 0x06e, 0x06a, 0x1f4, 0x3ec, 0x1f0, 0x3f9, 0x0f5, 0x0ec, + 0x7fb, 0x0ea, 0x06f, 0x3f7, 0x7f9, 0x3f3, 0xfff, 0x0e9, + 0x06d, 0x3f8, 0x06c, 0x068, 0x1f5, 0x3ee, 0x1f2, 0x7f4, + 0x7f7, 0x3f1, 0xffe, 0x3ed, 0x1f1, 0x7f5, 0x7fe, 0x3f5, + 0x7fc +]; +const AAC_SPEC_CB5_BITS: &[u8] = &[ + 13, 12, 11, 11, 10, 11, 11, 12, 13, 12, 11, 10, 9, 8, 9, 10, + 11, 12, 12, 10, 9, 8, 7, 8, 9, 10, 11, 11, 9, 8, 5, 4, + 5, 8, 9, 11, 10, 8, 7, 4, 1, 4, 7, 8, 11, 11, 9, 8, + 5, 4, 5, 8, 9, 11, 11, 10, 9, 8, 7, 8, 9, 10, 11, 12, + 11, 10, 9, 8, 9, 10, 11, 12, 13, 12, 12, 11, 10, 10, 11, 12, + 13 +]; +const AAC_SPEC_CB5_CODES: &[u16] = &[ + 0x1fff, 0x0ff7, 0x07f4, 0x07e8, 0x03f1, 0x07ee, 0x07f9, 0x0ff8, + 0x1ffd, 0x0ffd, 0x07f1, 0x03e8, 0x01e8, 0x00f0, 0x01ec, 0x03ee, + 0x07f2, 0x0ffa, 0x0ff4, 0x03ef, 0x01f2, 0x00e8, 0x0070, 0x00ec, + 0x01f0, 0x03ea, 0x07f3, 0x07eb, 0x01eb, 0x00ea, 0x001a, 0x0008, + 0x0019, 0x00ee, 0x01ef, 0x07ed, 0x03f0, 0x00f2, 0x0073, 0x000b, + 0x0000, 0x000a, 0x0071, 0x00f3, 0x07e9, 0x07ef, 0x01ee, 0x00ef, + 0x0018, 0x0009, 0x001b, 0x00eb, 0x01e9, 0x07ec, 0x07f6, 0x03eb, + 0x01f3, 0x00ed, 0x0072, 0x00e9, 0x01f1, 0x03ed, 0x07f7, 0x0ff6, + 0x07f0, 0x03e9, 0x01ed, 0x00f1, 0x01ea, 0x03ec, 0x07f8, 0x0ff9, + 0x1ffc, 0x0ffc, 0x0ff5, 0x07ea, 0x03f3, 0x03f2, 0x07f5, 0x0ffb, + 0x1ffe +]; +const AAC_SPEC_CB6_BITS: &[u8] = &[ + 11, 10, 9, 9, 9, 9, 9, 10, 11, 10, 9, 8, 7, 7, 7, 8, + 9, 10, 9, 8, 6, 6, 6, 6, 6, 8, 9, 9, 7, 6, 4, 4, + 4, 6, 7, 9, 9, 7, 6, 4, 4, 4, 6, 7, 9, 9, 7, 6, + 4, 4, 4, 6, 7, 9, 9, 8, 6, 6, 6, 6, 6, 8, 9, 10, + 9, 8, 7, 7, 7, 7, 8, 10, 11, 10, 9, 9, 9, 9, 9, 10, + 11 +]; +const AAC_SPEC_CB6_CODES: &[u16] = &[ + 0x7fe, 0x3fd, 0x1f1, 0x1eb, 0x1f4, 0x1ea, 0x1f0, 0x3fc, + 0x7fd, 0x3f6, 0x1e5, 0x0ea, 0x06c, 0x071, 0x068, 0x0f0, + 0x1e6, 0x3f7, 0x1f3, 0x0ef, 0x032, 0x027, 0x028, 0x026, + 0x031, 0x0eb, 0x1f7, 0x1e8, 0x06f, 0x02e, 0x008, 0x004, + 0x006, 0x029, 0x06b, 0x1ee, 0x1ef, 0x072, 0x02d, 0x002, + 0x000, 0x003, 0x02f, 0x073, 0x1fa, 0x1e7, 0x06e, 0x02b, + 0x007, 0x001, 0x005, 0x02c, 0x06d, 0x1ec, 0x1f9, 0x0ee, + 0x030, 0x024, 0x02a, 0x025, 0x033, 0x0ec, 0x1f2, 0x3f8, + 0x1e4, 0x0ed, 0x06a, 0x070, 0x069, 0x074, 0x0f1, 0x3fa, + 0x7ff, 0x3f9, 0x1f6, 0x1ed, 0x1f8, 0x1e9, 0x1f5, 0x3fb, + 0x7fc +]; +const AAC_SPEC_CB7_BITS: &[u8] = &[ + 1, 3, 6, 7, 8, 9, 10, 11, 3, 4, 6, 7, 8, 8, 9, 9, + 6, 6, 7, 8, 8, 9, 9, 10, 7, 7, 8, 8, 9, 9, 10, 10, + 8, 8, 9, 9, 10, 10, 10, 11, 9, 8, 9, 9, 10, 10, 11, 11, + 10, 9, 9, 10, 10, 11, 12, 12, 11, 10, 10, 10, 11, 11, 12, 12 +]; +const AAC_SPEC_CB7_CODES: &[u16] = &[ + 0x000, 0x005, 0x037, 0x074, 0x0f2, 0x1eb, 0x3ed, 0x7f7, + 0x004, 0x00c, 0x035, 0x071, 0x0ec, 0x0ee, 0x1ee, 0x1f5, + 0x036, 0x034, 0x072, 0x0ea, 0x0f1, 0x1e9, 0x1f3, 0x3f5, + 0x073, 0x070, 0x0eb, 0x0f0, 0x1f1, 0x1f0, 0x3ec, 0x3fa, + 0x0f3, 0x0ed, 0x1e8, 0x1ef, 0x3ef, 0x3f1, 0x3f9, 0x7fb, + 0x1ed, 0x0ef, 0x1ea, 0x1f2, 0x3f3, 0x3f8, 0x7f9, 0x7fc, + 0x3ee, 0x1ec, 0x1f4, 0x3f4, 0x3f7, 0x7f8, 0xffd, 0xffe, + 0x7f6, 0x3f0, 0x3f2, 0x3f6, 0x7fa, 0x7fd, 0xffc, 0xfff +]; +const AAC_SPEC_CB8_BITS: &[u8] = &[ + 5, 4, 5, 6, 7, 8, 9, 10, 4, 3, 4, 5, 6, 7, 7, 8, + 5, 4, 4, 5, 6, 7, 7, 8, 6, 5, 5, 6, 6, 7, 8, 8, + 7, 6, 6, 6, 7, 7, 8, 9, 8, 7, 6, 7, 7, 8, 8, 10, + 9, 7, 7, 8, 8, 8, 9, 9, 10, 8, 8, 8, 9, 9, 9, 10 +]; +const AAC_SPEC_CB8_CODES: &[u16] = &[ + 0x00e, 0x005, 0x010, 0x030, 0x06f, 0x0f1, 0x1fa, 0x3fe, + 0x003, 0x000, 0x004, 0x012, 0x02c, 0x06a, 0x075, 0x0f8, + 0x00f, 0x002, 0x006, 0x014, 0x02e, 0x069, 0x072, 0x0f5, + 0x02f, 0x011, 0x013, 0x02a, 0x032, 0x06c, 0x0ec, 0x0fa, + 0x071, 0x02b, 0x02d, 0x031, 0x06d, 0x070, 0x0f2, 0x1f9, + 0x0ef, 0x068, 0x033, 0x06b, 0x06e, 0x0ee, 0x0f9, 0x3fc, + 0x1f8, 0x074, 0x073, 0x0ed, 0x0f0, 0x0f6, 0x1f6, 0x1fd, + 0x3fd, 0x0f3, 0x0f4, 0x0f7, 0x1f7, 0x1fb, 0x1fc, 0x3ff +]; +const AAC_SPEC_CB9_BITS: &[u8] = &[ + 1, 3, 6, 8, 9, 10, 10, 11, 11, 12, 12, 13, 13, 3, 4, 6, + 7, 8, 8, 9, 10, 10, 10, 11, 12, 12, 6, 6, 7, 8, 8, 9, + 10, 10, 10, 11, 12, 12, 12, 8, 7, 8, 9, 9, 10, 10, 11, 11, + 11, 12, 12, 13, 9, 8, 9, 9, 10, 10, 11, 11, 11, 12, 12, 12, + 13, 10, 9, 9, 10, 11, 11, 11, 12, 11, 12, 12, 13, 13, 11, 9, + 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 11, 10, 10, 11, 11, + 12, 12, 13, 13, 13, 13, 13, 13, 11, 10, 10, 11, 11, 11, 12, 12, + 13, 13, 14, 13, 14, 11, 10, 11, 11, 12, 12, 12, 12, 13, 13, 14, + 14, 14, 12, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 12, + 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 15, 15, 13, 12, 12, 12, + 13, 13, 13, 13, 14, 14, 14, 14, 15 +]; +const AAC_SPEC_CB9_CODES: &[u16] = &[ + 0x0000, 0x0005, 0x0037, 0x00e7, 0x01de, 0x03ce, 0x03d9, 0x07c8, + 0x07cd, 0x0fc8, 0x0fdd, 0x1fe4, 0x1fec, 0x0004, 0x000c, 0x0035, + 0x0072, 0x00ea, 0x00ed, 0x01e2, 0x03d1, 0x03d3, 0x03e0, 0x07d8, + 0x0fcf, 0x0fd5, 0x0036, 0x0034, 0x0071, 0x00e8, 0x00ec, 0x01e1, + 0x03cf, 0x03dd, 0x03db, 0x07d0, 0x0fc7, 0x0fd4, 0x0fe4, 0x00e6, + 0x0070, 0x00e9, 0x01dd, 0x01e3, 0x03d2, 0x03dc, 0x07cc, 0x07ca, + 0x07de, 0x0fd8, 0x0fea, 0x1fdb, 0x01df, 0x00eb, 0x01dc, 0x01e6, + 0x03d5, 0x03de, 0x07cb, 0x07dd, 0x07dc, 0x0fcd, 0x0fe2, 0x0fe7, + 0x1fe1, 0x03d0, 0x01e0, 0x01e4, 0x03d6, 0x07c5, 0x07d1, 0x07db, + 0x0fd2, 0x07e0, 0x0fd9, 0x0feb, 0x1fe3, 0x1fe9, 0x07c4, 0x01e5, + 0x03d7, 0x07c6, 0x07cf, 0x07da, 0x0fcb, 0x0fda, 0x0fe3, 0x0fe9, + 0x1fe6, 0x1ff3, 0x1ff7, 0x07d3, 0x03d8, 0x03e1, 0x07d4, 0x07d9, + 0x0fd3, 0x0fde, 0x1fdd, 0x1fd9, 0x1fe2, 0x1fea, 0x1ff1, 0x1ff6, + 0x07d2, 0x03d4, 0x03da, 0x07c7, 0x07d7, 0x07e2, 0x0fce, 0x0fdb, + 0x1fd8, 0x1fee, 0x3ff0, 0x1ff4, 0x3ff2, 0x07e1, 0x03df, 0x07c9, + 0x07d6, 0x0fca, 0x0fd0, 0x0fe5, 0x0fe6, 0x1feb, 0x1fef, 0x3ff3, + 0x3ff4, 0x3ff5, 0x0fe0, 0x07ce, 0x07d5, 0x0fc6, 0x0fd1, 0x0fe1, + 0x1fe0, 0x1fe8, 0x1ff0, 0x3ff1, 0x3ff8, 0x3ff6, 0x7ffc, 0x0fe8, + 0x07df, 0x0fc9, 0x0fd7, 0x0fdc, 0x1fdc, 0x1fdf, 0x1fed, 0x1ff5, + 0x3ff9, 0x3ffb, 0x7ffd, 0x7ffe, 0x1fe7, 0x0fcc, 0x0fd6, 0x0fdf, + 0x1fde, 0x1fda, 0x1fe5, 0x1ff2, 0x3ffa, 0x3ff7, 0x3ffc, 0x3ffd, + 0x7fff +]; +const AAC_SPEC_CB10_BITS: &[u8] = &[ + 6, 5, 6, 6, 7, 8, 9, 10, 10, 10, 11, 11, 12, 5, 4, 4, + 5, 6, 7, 7, 8, 8, 9, 10, 10, 11, 6, 4, 5, 5, 6, 6, + 7, 8, 8, 9, 9, 10, 10, 6, 5, 5, 5, 6, 7, 7, 8, 8, + 9, 9, 10, 10, 7, 6, 6, 6, 6, 7, 7, 8, 8, 9, 9, 10, + 10, 8, 7, 6, 7, 7, 7, 8, 8, 8, 9, 10, 10, 11, 9, 7, + 7, 7, 7, 8, 8, 9, 9, 9, 10, 10, 11, 9, 8, 8, 8, 8, + 8, 9, 9, 9, 10, 10, 11, 11, 9, 8, 8, 8, 8, 8, 9, 9, + 10, 10, 10, 11, 11, 10, 9, 9, 9, 9, 9, 9, 10, 10, 10, 11, + 11, 12, 10, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 12, 11, + 10, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 12, 11, 10, 10, 10, + 10, 10, 10, 11, 11, 12, 12, 12, 12 +]; +const AAC_SPEC_CB10_CODES: &[u16] = &[ + 0x022, 0x008, 0x01d, 0x026, 0x05f, 0x0d3, 0x1cf, 0x3d0, + 0x3d7, 0x3ed, 0x7f0, 0x7f6, 0xffd, 0x007, 0x000, 0x001, + 0x009, 0x020, 0x054, 0x060, 0x0d5, 0x0dc, 0x1d4, 0x3cd, + 0x3de, 0x7e7, 0x01c, 0x002, 0x006, 0x00c, 0x01e, 0x028, + 0x05b, 0x0cd, 0x0d9, 0x1ce, 0x1dc, 0x3d9, 0x3f1, 0x025, + 0x00b, 0x00a, 0x00d, 0x024, 0x057, 0x061, 0x0cc, 0x0dd, + 0x1cc, 0x1de, 0x3d3, 0x3e7, 0x05d, 0x021, 0x01f, 0x023, + 0x027, 0x059, 0x064, 0x0d8, 0x0df, 0x1d2, 0x1e2, 0x3dd, + 0x3ee, 0x0d1, 0x055, 0x029, 0x056, 0x058, 0x062, 0x0ce, + 0x0e0, 0x0e2, 0x1da, 0x3d4, 0x3e3, 0x7eb, 0x1c9, 0x05e, + 0x05a, 0x05c, 0x063, 0x0ca, 0x0da, 0x1c7, 0x1ca, 0x1e0, + 0x3db, 0x3e8, 0x7ec, 0x1e3, 0x0d2, 0x0cb, 0x0d0, 0x0d7, + 0x0db, 0x1c6, 0x1d5, 0x1d8, 0x3ca, 0x3da, 0x7ea, 0x7f1, + 0x1e1, 0x0d4, 0x0cf, 0x0d6, 0x0de, 0x0e1, 0x1d0, 0x1d6, + 0x3d1, 0x3d5, 0x3f2, 0x7ee, 0x7fb, 0x3e9, 0x1cd, 0x1c8, + 0x1cb, 0x1d1, 0x1d7, 0x1df, 0x3cf, 0x3e0, 0x3ef, 0x7e6, + 0x7f8, 0xffa, 0x3eb, 0x1dd, 0x1d3, 0x1d9, 0x1db, 0x3d2, + 0x3cc, 0x3dc, 0x3ea, 0x7ed, 0x7f3, 0x7f9, 0xff9, 0x7f2, + 0x3ce, 0x1e4, 0x3cb, 0x3d8, 0x3d6, 0x3e2, 0x3e5, 0x7e8, + 0x7f4, 0x7f5, 0x7f7, 0xffb, 0x7fa, 0x3ec, 0x3df, 0x3e1, + 0x3e4, 0x3e6, 0x3f0, 0x7e9, 0x7ef, 0xff8, 0xffe, 0xffc, + 0xfff +]; +const AAC_SPEC_CB11_BITS: &[u8] = &[ + 4, 5, 6, 7, 8, 8, 9, 10, 10, 10, 11, 11, 12, 11, 12, 12, + 10, 5, 4, 5, 6, 7, 7, 8, 8, 9, 9, 9, 10, 10, 10, 10, + 11, 8, 6, 5, 5, 6, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, + 10, 10, 8, 7, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9, 9, 10, + 10, 10, 10, 8, 8, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, + 10, 10, 10, 10, 8, 8, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, + 9, 10, 10, 10, 10, 8, 9, 8, 8, 8, 8, 8, 8, 8, 9, 9, + 9, 10, 10, 10, 10, 10, 8, 9, 8, 8, 8, 8, 8, 8, 9, 9, + 9, 10, 10, 10, 10, 10, 10, 8, 10, 9, 8, 8, 9, 9, 9, 9, + 9, 10, 10, 10, 10, 10, 10, 11, 8, 10, 9, 9, 9, 9, 9, 9, + 9, 10, 10, 10, 10, 10, 10, 11, 11, 8, 11, 9, 9, 9, 9, 9, + 9, 10, 10, 10, 10, 10, 11, 10, 11, 11, 8, 11, 10, 9, 9, 10, + 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 8, 11, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 9, 11, 10, 9, + 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 9, 11, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 9, 12, + 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 9, + 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, + 5 +]; +const AAC_SPEC_CB11_CODES: &[u16] = &[ + 0x000, 0x006, 0x019, 0x03d, 0x09c, 0x0c6, 0x1a7, 0x390, + 0x3c2, 0x3df, 0x7e6, 0x7f3, 0xffb, 0x7ec, 0xffa, 0xffe, + 0x38e, 0x005, 0x001, 0x008, 0x014, 0x037, 0x042, 0x092, + 0x0af, 0x191, 0x1a5, 0x1b5, 0x39e, 0x3c0, 0x3a2, 0x3cd, + 0x7d6, 0x0ae, 0x017, 0x007, 0x009, 0x018, 0x039, 0x040, + 0x08e, 0x0a3, 0x0b8, 0x199, 0x1ac, 0x1c1, 0x3b1, 0x396, + 0x3be, 0x3ca, 0x09d, 0x03c, 0x015, 0x016, 0x01a, 0x03b, + 0x044, 0x091, 0x0a5, 0x0be, 0x196, 0x1ae, 0x1b9, 0x3a1, + 0x391, 0x3a5, 0x3d5, 0x094, 0x09a, 0x036, 0x038, 0x03a, + 0x041, 0x08c, 0x09b, 0x0b0, 0x0c3, 0x19e, 0x1ab, 0x1bc, + 0x39f, 0x38f, 0x3a9, 0x3cf, 0x093, 0x0bf, 0x03e, 0x03f, + 0x043, 0x045, 0x09e, 0x0a7, 0x0b9, 0x194, 0x1a2, 0x1ba, + 0x1c3, 0x3a6, 0x3a7, 0x3bb, 0x3d4, 0x09f, 0x1a0, 0x08f, + 0x08d, 0x090, 0x098, 0x0a6, 0x0b6, 0x0c4, 0x19f, 0x1af, + 0x1bf, 0x399, 0x3bf, 0x3b4, 0x3c9, 0x3e7, 0x0a8, 0x1b6, + 0x0ab, 0x0a4, 0x0aa, 0x0b2, 0x0c2, 0x0c5, 0x198, 0x1a4, + 0x1b8, 0x38c, 0x3a4, 0x3c4, 0x3c6, 0x3dd, 0x3e8, 0x0ad, + 0x3af, 0x192, 0x0bd, 0x0bc, 0x18e, 0x197, 0x19a, 0x1a3, + 0x1b1, 0x38d, 0x398, 0x3b7, 0x3d3, 0x3d1, 0x3db, 0x7dd, + 0x0b4, 0x3de, 0x1a9, 0x19b, 0x19c, 0x1a1, 0x1aa, 0x1ad, + 0x1b3, 0x38b, 0x3b2, 0x3b8, 0x3ce, 0x3e1, 0x3e0, 0x7d2, + 0x7e5, 0x0b7, 0x7e3, 0x1bb, 0x1a8, 0x1a6, 0x1b0, 0x1b2, + 0x1b7, 0x39b, 0x39a, 0x3ba, 0x3b5, 0x3d6, 0x7d7, 0x3e4, + 0x7d8, 0x7ea, 0x0ba, 0x7e8, 0x3a0, 0x1bd, 0x1b4, 0x38a, + 0x1c4, 0x392, 0x3aa, 0x3b0, 0x3bc, 0x3d7, 0x7d4, 0x7dc, + 0x7db, 0x7d5, 0x7f0, 0x0c1, 0x7fb, 0x3c8, 0x3a3, 0x395, + 0x39d, 0x3ac, 0x3ae, 0x3c5, 0x3d8, 0x3e2, 0x3e6, 0x7e4, + 0x7e7, 0x7e0, 0x7e9, 0x7f7, 0x190, 0x7f2, 0x393, 0x1be, + 0x1c0, 0x394, 0x397, 0x3ad, 0x3c3, 0x3c1, 0x3d2, 0x7da, + 0x7d9, 0x7df, 0x7eb, 0x7f4, 0x7fa, 0x195, 0x7f8, 0x3bd, + 0x39c, 0x3ab, 0x3a8, 0x3b3, 0x3b9, 0x3d0, 0x3e3, 0x3e5, + 0x7e2, 0x7de, 0x7ed, 0x7f1, 0x7f9, 0x7fc, 0x193, 0xffd, + 0x3dc, 0x3b6, 0x3c7, 0x3cc, 0x3cb, 0x3d9, 0x3da, 0x7d3, + 0x7e1, 0x7ee, 0x7ef, 0x7f5, 0x7f6, 0xffc, 0xfff, 0x19d, + 0x1c2, 0x0b5, 0x0a1, 0x096, 0x097, 0x095, 0x099, 0x0a0, + 0x0a2, 0x0ac, 0x0a9, 0x0b1, 0x0b3, 0x0bb, 0x0c0, 0x18f, + 0x004 +]; + +const AAC_SPEC_BITS: [&[u8]; 11] = [ + AAC_SPEC_CB1_BITS, AAC_SPEC_CB2_BITS, AAC_SPEC_CB3_BITS, AAC_SPEC_CB4_BITS, + AAC_SPEC_CB5_BITS, AAC_SPEC_CB6_BITS, AAC_SPEC_CB7_BITS, AAC_SPEC_CB8_BITS, + AAC_SPEC_CB9_BITS, AAC_SPEC_CB10_BITS, AAC_SPEC_CB11_BITS +]; +const AAC_SPEC_CODES: [&[u16]; 11] = [ + AAC_SPEC_CB1_CODES, AAC_SPEC_CB2_CODES, AAC_SPEC_CB3_CODES, AAC_SPEC_CB4_CODES, + AAC_SPEC_CB5_CODES, AAC_SPEC_CB6_CODES, AAC_SPEC_CB7_CODES, AAC_SPEC_CB8_CODES, + AAC_SPEC_CB9_CODES, AAC_SPEC_CB10_CODES, AAC_SPEC_CB11_CODES +]; +const AAC_UNSIGNED_CODEBOOK: [bool; 11] = [ + false, false, true, true, false, false, true, true, true, true, true +]; +const AAC_CODEBOOK_MODULO: [u16; 7] = [ + 9, 9, 8, 8, 13, 13, 17 +]; + +const AAC_QUADS: [[i8; 4]; 81] = [ + [ 0, 0, 0, 0 ], [ 0, 0, 0, 1 ], [ 0, 0, 0, 2 ], + [ 0, 0, 1, 0 ], [ 0, 0, 1, 1 ], [ 0, 0, 1, 2 ], + [ 0, 0, 2, 0 ], [ 0, 0, 2, 1 ], [ 0, 0, 2, 2 ], + [ 0, 1, 0, 0 ], [ 0, 1, 0, 1 ], [ 0, 1, 0, 2 ], + [ 0, 1, 1, 0 ], [ 0, 1, 1, 1 ], [ 0, 1, 1, 2 ], + [ 0, 1, 2, 0 ], [ 0, 1, 2, 1 ], [ 0, 1, 2, 2 ], + [ 0, 2, 0, 0 ], [ 0, 2, 0, 1 ], [ 0, 2, 0, 2 ], + [ 0, 2, 1, 0 ], [ 0, 2, 1, 1 ], [ 0, 2, 1, 2 ], + [ 0, 2, 2, 0 ], [ 0, 2, 2, 1 ], [ 0, 2, 2, 2 ], + [ 1, 0, 0, 0 ], [ 1, 0, 0, 1 ], [ 1, 0, 0, 2 ], + [ 1, 0, 1, 0 ], [ 1, 0, 1, 1 ], [ 1, 0, 1, 2 ], + [ 1, 0, 2, 0 ], [ 1, 0, 2, 1 ], [ 1, 0, 2, 2 ], + [ 1, 1, 0, 0 ], [ 1, 1, 0, 1 ], [ 1, 1, 0, 2 ], + [ 1, 1, 1, 0 ], [ 1, 1, 1, 1 ], [ 1, 1, 1, 2 ], + [ 1, 1, 2, 0 ], [ 1, 1, 2, 1 ], [ 1, 1, 2, 2 ], + [ 1, 2, 0, 0 ], [ 1, 2, 0, 1 ], [ 1, 2, 0, 2 ], + [ 1, 2, 1, 0 ], [ 1, 2, 1, 1 ], [ 1, 2, 1, 2 ], + [ 1, 2, 2, 0 ], [ 1, 2, 2, 1 ], [ 1, 2, 2, 2 ], + [ 2, 0, 0, 0 ], [ 2, 0, 0, 1 ], [ 2, 0, 0, 2 ], + [ 2, 0, 1, 0 ], [ 2, 0, 1, 1 ], [ 2, 0, 1, 2 ], + [ 2, 0, 2, 0 ], [ 2, 0, 2, 1 ], [ 2, 0, 2, 2 ], + [ 2, 1, 0, 0 ], [ 2, 1, 0, 1 ], [ 2, 1, 0, 2 ], + [ 2, 1, 1, 0 ], [ 2, 1, 1, 1 ], [ 2, 1, 1, 2 ], + [ 2, 1, 2, 0 ], [ 2, 1, 2, 1 ], [ 2, 1, 2, 2 ], + [ 2, 2, 0, 0 ], [ 2, 2, 0, 1 ], [ 2, 2, 0, 2 ], + [ 2, 2, 1, 0 ], [ 2, 2, 1, 1 ], [ 2, 2, 1, 2 ], + [ 2, 2, 2, 0 ], [ 2, 2, 2, 1 ], [ 2, 2, 2, 2 ], +]; +