+use super::*;
+use super::bs::FrameClass;
+use super::dsp::{SBRAnalysis, SBRSynthesis};
+use nihav_codec_support::dsp::fft::{FFTComplex, FFTC_ZERO};
+
+const RANGE: f32 = 65536.0;
+
+const SMOOTH_DELAY: usize = 4;
+
+const NEW_BW: [[f32; 4]; 4] = [
+ [ 0.0, 0.6, 0.9, 0.98 ],
+ [ 0.6, 0.75, 0.9, 0.98 ],
+ [ 0.0, 0.75, 0.9, 0.98 ],
+ [ 0.0, 0.75, 0.9, 0.98 ]
+];
+
+#[derive(Clone, Copy)]
+pub enum QuantMode {
+ Single,
+ Left,
+ Right,
+}
+
+#[derive(Clone)]
+pub struct SBRChannel {
+ sbr_a: SBRAnalysis,
+ sbr_s: SBRSynthesis,
+
+ w: [[FFTComplex; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ x: [[FFTComplex; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ x_high: [[FFTComplex; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ y: [[FFTComplex; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ prev_y: [[FFTComplex; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+
+ bw_array: [f32; SBR_BANDS],
+ old_bw_array: [f32; SBR_BANDS],
+
+ pub qmode: QuantMode,
+ pub fclass: FrameClass,
+ pub amp_res: bool,
+ pub num_env: usize,
+ prev_num_env: usize,
+ pub freq_res: [bool; NUM_ENVELOPES],
+ pub env_border: [usize; NUM_ENVELOPES],
+ pub noise_env_border: [usize; 3],
+ pub pointer: u8,
+ pub num_noise: usize,
+ pub last_env_end: usize,
+
+ pub df_env: [bool; NUM_ENVELOPES],
+ pub df_noise: [bool; 2],
+
+ pub invf_mode: [u8; NUM_PATCHES],
+ old_invf_mode: [u8; NUM_PATCHES],
+
+ pub data_env: [[i8; SBR_BANDS]; NUM_PATCHES],
+ pub data_noise: [[i8; SBR_BANDS]; NUM_PATCHES],
+ pub data_env2: [[i8; SBR_BANDS]; NUM_PATCHES],
+ pub data_noise2: [[i8; SBR_BANDS]; NUM_PATCHES],
+ pub last_envelope: [i8; SBR_BANDS],
+ pub last_noise_env: [i8; SBR_BANDS],
+ pub last_freq_res: bool,
+
+ pub add_harmonic: [bool; SBR_BANDS],
+ prev_l_a: i8,
+
+ s_idx_mapped: [[bool; SBR_BANDS]; NUM_ENVELOPES],
+ prev_s_idx_mapped: [bool; SBR_BANDS],
+ index_sine: usize,
+ index_noise: usize,
+ g_temp: [[f32; SBR_BANDS]; MAX_SLOTS * 2 + QMF_DELAY + SMOOTH_DELAY],
+ q_temp: [[f32; SBR_BANDS]; MAX_SLOTS * 2 + QMF_DELAY + SMOOTH_DELAY],
+}
+
+impl SBRChannel {
+ pub fn new() -> Self {
+ Self {
+ sbr_a: SBRAnalysis::new(),
+ sbr_s: SBRSynthesis::new(),
+
+ w: [[FFTC_ZERO; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ x: [[FFTC_ZERO; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ x_high: [[FFTC_ZERO; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ y: [[FFTC_ZERO; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+ prev_y: [[FFTC_ZERO; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2],
+
+ bw_array: [0.0; SBR_BANDS],
+ old_bw_array: [0.0; SBR_BANDS],
+
+ qmode: QuantMode::Single,
+ fclass: FrameClass::FixFix,
+ amp_res: false,
+ num_env: 0,
+ prev_num_env: 0,
+ freq_res: [false; NUM_ENVELOPES],
+ env_border: [0; NUM_ENVELOPES],
+ noise_env_border: [0; 3],
+ pointer: 0,
+ num_noise: 0,
+ last_env_end: 0,
+
+ df_env: [false; NUM_ENVELOPES],
+ df_noise: [false; 2],
+
+ invf_mode: [0; NUM_PATCHES],
+ old_invf_mode: [0; NUM_PATCHES],
+
+ data_env: [[0; SBR_BANDS]; NUM_PATCHES],
+ data_noise: [[0; SBR_BANDS]; NUM_PATCHES],
+ data_env2: [[0; SBR_BANDS]; NUM_PATCHES],
+ data_noise2: [[0; SBR_BANDS]; NUM_PATCHES],
+ last_envelope: [0; SBR_BANDS],
+ last_noise_env: [0; SBR_BANDS],
+ last_freq_res: false,
+
+ add_harmonic: [false; SBR_BANDS],
+ prev_l_a: -1,
+
+ s_idx_mapped: [[false; SBR_BANDS]; NUM_ENVELOPES],
+ prev_s_idx_mapped: [false; SBR_BANDS],
+ index_sine: 0,
+ index_noise: 0,
+ g_temp: [[0.0; SBR_BANDS]; MAX_SLOTS * 2 + QMF_DELAY + SMOOTH_DELAY],
+ q_temp: [[0.0; SBR_BANDS]; MAX_SLOTS * 2 + QMF_DELAY + SMOOTH_DELAY],
+ }
+ }
+
+ pub fn reset(&mut self) {
+ self.prev_y = [[FFTC_ZERO; SBR_BANDS]; QMF_DELAY + MAX_SLOTS * 2];
+ self.old_bw_array = [0.0; SBR_BANDS];
+ self.last_envelope = [0; SBR_BANDS];
+ self.last_noise_env = [0; SBR_BANDS];
+ self.last_freq_res = false;
+ self.last_env_end = 0;
+ self.prev_num_env = 0;
+ self.old_invf_mode = [0; NUM_PATCHES];
+ self.prev_s_idx_mapped = [false; SBR_BANDS];
+ self.index_sine = 0;
+ self.index_noise = 0;
+ }
+
+ pub fn set_amp_res(&mut self, amp_res: bool) {
+ if self.fclass != FrameClass::FixFix || self.num_env != 1 {
+ self.amp_res = amp_res;
+ } else {
+ self.amp_res = false;
+ }
+ }
+
+ pub fn analysis(&mut self, dsp: &mut SBRDSP, src: &[f32]) {
+ for (src, dst) in src.chunks(32).zip(self.w[QMF_DELAY..].iter_mut()) {
+ self.sbr_a.analysis(dsp, src, dst);
+ }
+ }
+ pub fn synthesis(&mut self, dsp: &mut SBRDSP, dst: &mut [f32]) {
+ for (src, dst) in self.x.iter().zip(dst.chunks_mut(64)) {
+ self.sbr_s.synthesis(dsp, src, dst);
+ }
+ }
+ pub fn bypass(&mut self) {
+ self.x.copy_from_slice(&self.w);
+ }
+ pub fn hf_generate(&mut self, state: &SBRState) {
+ for (x, w) in self.x.iter_mut().zip(self.w.iter()) {
+ x[..state.k_x].copy_from_slice(&w[..state.k_x]);
+ for el in x[state.k_x..].iter_mut() {
+ *el = FFTC_ZERO;
+ }
+ }
+
+ let mut phi = [[[FFTC_ZERO; SBR_BANDS]; 3]; 3];
+ let mut a0 = [FFTC_ZERO; SBR_BANDS];
+ let mut a1 = [FFTC_ZERO; SBR_BANDS];
+ let k0 = state.f[0];
+ for (i, phi) in phi.iter_mut().enumerate() {
+ for (j, phi) in phi.iter_mut().enumerate().skip(1) {
+ let src0 = &self.x[HF_ADJ - i..][..MAX_SLOTS * 2 + 6 - 1];
+ let src1 = &self.x[HF_ADJ - j..][..MAX_SLOTS * 2 + 6 - 1];
+ for (slot0, slot1) in src0.iter().zip(src1.iter()) {
+ for (k, phi) in phi.iter_mut().take(k0).enumerate() {
+ *phi += slot0[k] * !slot1[k];
+ }
+ }
+ }
+ }
+ for (k, (a0, a1)) in a0.iter_mut().zip(a1.iter_mut()).take(k0).enumerate() {
+ let phi12 = phi[1][2][k];
+ let d_k = phi[2][2][k].re * phi[1][1][k].re - phi12.sq_modulus() / (1.0 + 1.0e-6);
+
+ if d_k != 0.0 {
+ *a1 = (phi[0][1][k] * phi[1][2][k] - phi[0][2][k] * phi[1][1][k]).scale(1.0 / d_k);
+ }
+ if phi[1][1][k].re != 0.0 {
+ *a0 = -(phi[0][1][k] + *a1 * !phi[1][2][k]).scale(1.0 / phi[1][1][k].re);
+ }
+ if a0.sq_modulus() >= 4.0*4.0 || a1.sq_modulus() >= 4.0*4.0 {
+ *a0 = FFTC_ZERO;
+ *a1 = FFTC_ZERO;
+ }
+ }
+
+ for k in 0..state.num_noise_bands {
+ let new_bw = NEW_BW[self.old_invf_mode[k] as usize][self.invf_mode[k] as usize];
+ let old_bw = self.old_bw_array[k];
+ let temp_bw = if new_bw < old_bw {
+ 0.75 * new_bw + 0.25 * old_bw
+ } else {
+ 0.90625 * new_bw + 0.09375 * old_bw
+ };
+ self.bw_array[k] = if temp_bw >= 0.015625 {
+ temp_bw
+ } else {
+ 0.0
+ };
+ }
+
+ for (l, x_high) in self.x_high.iter_mut().enumerate().skip(HF_ADJ).take(self.env_border[self.num_env - 1] * 2) {
+ *x_high = [FFTC_ZERO; SBR_BANDS];
+ let mut dst_k = state.k_x;
+ for (&patch_start, &patch_len) in state.patch_start_subband[..state.num_patches].iter().zip(state.patch_num_subbands.iter()) {
+ for (k, dst) in x_high[dst_k..][..patch_len].iter_mut().enumerate() {
+ let p = patch_start + k;
+ let cur_x = self.x[l][p];
+ let prev_x = self.x[l - 1][p];
+ let pprev_x = self.x[l - 2][p];
+ let g_k = match state.f_noise[..state.num_noise_bands].binary_search(&k) {
+ Ok(idx) | Err(idx) => idx.min(state.num_noise_bands - 1),
+ };
+ let bw_val = self.bw_array[g_k];
+ *dst = cur_x + a0[p] * prev_x.scale(bw_val) + a1[p] * pprev_x.scale(bw_val * bw_val);
+ }
+ dst_k += patch_len;
+ }
+ }
+ }
+ pub fn hf_adjust(&mut self, state: &SBRState, hdr: &SBRHeader) {
+ const LIM_GAIN: [f32; 4] = [0.70795, 1.0, 1.41254, 10000.0];
+ const H_SMOOTH: [f32; 5] = [
+ 1.0 / 3.0, 0.30150283239582, 0.21816949906249, 0.11516383427084, 0.03183050093751
+ ];
+ const PHI: [FFTComplex; 4] = [
+ FFTComplex{ re: 1.0, im: 0.0 },
+ FFTComplex{ re: 0.0, im: 1.0 },
+ FFTComplex{ re: -1.0, im: 0.0 },
+ FFTComplex{ re: 0.0, im: -1.0 },
+ ];
+
+ let kx = state.k_x;
+ let km = state.f[state.num_master];
+ let envelope_end = self.env_border[self.num_env - 1];
+
+ let high_start = state.f[..=state.num_master].binary_search(&state.k_x).unwrap();
+ let f_high = &state.f[..=state.num_master][high_start..];
+ let f_low = &state.f_low[..=state.num_env_bands[0]];
+
+ let l_a = match (self.fclass, self.pointer) {
+ (_, 0) => -1,
+ (FrameClass::FixFix, _) => -1,
+ (FrameClass::FixVar, _) |
+ (FrameClass::VarVar, _) => (self.num_env as i8) + 1 - (self.pointer as i8),
+ (FrameClass::VarFix, 1) => -1,
+ (FrameClass::VarFix, _) => (self.pointer as i8) - 1,
+ };
+
+ self.s_idx_mapped = [[false; SBR_BANDS]; NUM_ENVELOPES];
+ for (l, s_idx_mapped) in self.s_idx_mapped[..self.num_env].iter_mut().enumerate() {
+ let mut start = f_high[0];
+ for (i, &end) in f_high.iter().skip(1).enumerate() {
+ if self.add_harmonic[i] {
+ let mid = (start + end) / 2;
+ if ((l as i8) >= l_a) || self.prev_s_idx_mapped[mid] {
+ s_idx_mapped[mid] = true;
+ }
+ }
+ start = end;
+ }
+ }
+ self.prev_s_idx_mapped = self.s_idx_mapped[self.num_env - 1];
+
+ let mut s_mapped = [[false; SBR_BANDS]; NUM_ENVELOPES];
+ for ((s_mapped, s_idx_mapped), &freq_res) in s_mapped.iter_mut().zip(self.s_idx_mapped[..self.num_env].iter()).zip(self.freq_res.iter()) {
+ let mut band_start = kx;
+ if freq_res {
+ for (&add_sine, &band_end) in self.add_harmonic.iter().zip(f_high[1..].iter()) {
+ for el in s_mapped[band_start..band_end].iter_mut() {
+ *el = add_sine;
+ }
+ band_start = band_end;
+ }
+ } else {
+ for &band_end in f_low[1..].iter() {
+ let add_sine = s_idx_mapped[band_start..band_end].contains(&true);
+ for el in s_mapped[band_start..band_end].iter_mut() {
+ *el = add_sine;
+ }
+ band_start = band_end;
+ }
+ }
+ }
+
+ let mut e_orig_mapped = [[0.0; SBR_BANDS]; NUM_ENVELOPES];
+ let (a, pan_offset) = if self.amp_res { (1.0, 12.0) } else { (0.5, 24.0) };
+ match self.qmode {
+ QuantMode::Single => {
+ for (dst, (src, &freq_res)) in e_orig_mapped[..self.num_env].iter_mut().zip(self.data_env.iter().zip(self.freq_res.iter())) {
+ let bands = if freq_res { f_high } else { f_low };
+ let mut start = kx;
+ for (&val, &band_end) in src.iter().zip(bands.iter().skip(1)) {
+ let scale = 2.0f32.powf(6.0 + f32::from(val) * a);
+ for dst in dst[start..band_end].iter_mut() {
+ *dst = scale;
+ }
+ start = band_end;
+ }
+ }
+ },
+ QuantMode::Left => {
+ for (dst, ((e0, e1), &freq_res)) in e_orig_mapped[..self.num_env].iter_mut().zip(self.data_env.iter().zip(self.data_env2.iter()).zip(self.freq_res.iter())) {
+ let bands = if freq_res { f_high } else { f_low };
+ let mut start = kx;
+ for ((&e0, &e1), &band_end) in e0.iter().zip(e1.iter()).zip(bands.iter().skip(1)) {
+ let scale = 2.0f32.powf(6.0 + f32::from(e0) * a + 1.0) / (1.0 + 2.0f32.powf((pan_offset - f32::from(e1)) * a));
+ for dst in dst[start..band_end].iter_mut() {
+ *dst = scale;
+ }
+ start = band_end;
+ }
+ }
+ },
+ QuantMode::Right => {
+ for (dst, ((e0, e1), &freq_res)) in e_orig_mapped[..self.num_env].iter_mut().zip(self.data_env2.iter().zip(self.data_env.iter()).zip(self.freq_res.iter())) {
+ let bands = if freq_res { f_high } else { f_low };
+ let mut start = kx;
+ for ((&e0, &e1), &band_end) in e0.iter().zip(e1.iter()).zip(bands.iter().skip(1)) {
+ let scale = 2.0f32.powf(6.0 + f32::from(e0) * a + 1.0) / (1.0 + 2.0f32.powf((f32::from(e1) - pan_offset) * a));
+ for dst in dst[start..band_end].iter_mut() {
+ *dst = scale;
+ }
+ start = band_end;
+ }
+ }
+ }
+ };
+ let mut q_mapped = [[0.0; SBR_BANDS]; NUM_ENVELOPES];
+ let mut start = 0;
+ let noise_env = [0, self.noise_env_border[0], self.noise_env_border[1]];
+ match self.qmode {
+ QuantMode::Single => {
+ for (env_no, &env_end) in self.env_border[..self.num_env].iter().enumerate() {
+ let env_end = env_end;
+ let mut noise_env_no = 0;
+ for nenv in 0..self.num_noise {
+ if (start >= noise_env[nenv]) && (env_end <= noise_env[nenv + 1]) {
+ noise_env_no = nenv;
+ break;
+ }
+ }
+ let mut band_start = state.f_noise[0];
+ for (noise_band, &band_end) in state.f_noise[1..=state.num_noise_bands].iter().enumerate() {
+ let scale = 2.0f32.powf(6.0 - f32::from(self.data_noise[noise_env_no][noise_band]));
+ for el in q_mapped[env_no][band_start..band_end].iter_mut() {
+ *el = scale;
+ }
+ band_start = band_end;
+ }
+ start = env_end;
+ }
+ },
+ QuantMode::Left => {
+ for (env_no, &env_end) in self.env_border[..self.num_env].iter().enumerate() {
+ let env_end = env_end;
+ let mut noise_env_no = 0;
+ for nenv in 0..self.num_noise {
+ if (start >= noise_env[nenv]) && (env_end <= noise_env[nenv + 1]) {
+ noise_env_no = nenv;
+ break;
+ }
+ }
+ let mut band_start = state.f_noise[0];
+ for (noise_band, &band_end) in state.f_noise[1..=state.num_noise_bands].iter().enumerate() {
+ let scale = 2.0f32.powf(6.0 - f32::from(self.data_noise[noise_env_no][noise_band]) + 1.0) / (1.0 + 2.0f32.powf(12.0 - f32::from(self.data_noise2[noise_env_no][noise_band])));
+ for el in q_mapped[env_no][band_start..band_end].iter_mut() {
+ *el = scale;
+ }
+ band_start = band_end;
+ }
+ start = env_end;
+ }
+ },
+ QuantMode::Right => {
+ for (env_no, &env_end) in self.env_border[..self.num_env].iter().enumerate() {
+ let env_end = env_end;
+ let mut noise_env_no = 0;
+ for nenv in 0..self.num_noise {
+ if (start >= noise_env[nenv]) && (env_end <= noise_env[nenv + 1]) {
+ noise_env_no = nenv;
+ break;
+ }
+ }
+ let mut band_start = state.f_noise[0];
+ for (noise_band, &band_end) in state.f_noise[1..=state.num_noise_bands].iter().enumerate() {
+ let scale = 2.0f32.powf(6.0 - f32::from(self.data_noise2[noise_env_no][noise_band]) + 1.0) / (1.0 + 2.0f32.powf(f32::from(self.data_noise[noise_env_no][noise_band]) - 12.0));
+ for el in q_mapped[env_no][band_start..band_end].iter_mut() {
+ *el = scale;
+ }
+ band_start = band_end;
+ }
+ start = env_end;
+ }
+ },
+ };
+
+ let mut start = 0;
+ let mut e_curr = [[0.0f32; SBR_BANDS]; NUM_ENVELOPES];
+ for (e_curr, &env_end) in e_curr.iter_mut().zip(self.env_border[..self.num_env].iter()) {
+ for slot in self.x_high[HF_ADJ..][(start * 2)..(env_end * 2)].iter() {
+ for (dst, x) in e_curr[kx..km].iter_mut().zip(slot[kx..km].iter()) {
+ *dst += x.sq_modulus();
+ }
+ }
+ for el in e_curr[kx..km].iter_mut() {
+ *el *= RANGE * RANGE;
+ *el /= ((env_end - start) * 2) as f32;
+ }
+ start = env_end;
+ }
+
+ const EPS: f32 = 1.0;
+ const EPS0: f32 = 1.0e-12;
+ let la_prev = if self.prev_l_a == (self.prev_num_env as i8) { 0 } else { -1 };
+ let mut g_max_tmp;
+ let mut g_boost_tmp;
+ let mut g = [0.0; SBR_BANDS];
+ let mut q_m = [0.0; SBR_BANDS];
+ let mut s_m = [0.0; SBR_BANDS];
+ let mut q_m_lim = [0.0; SBR_BANDS];
+ let mut g_lim = [0.0; SBR_BANDS];
+ let mut g_lim_boost = [[0.0; SBR_BANDS]; NUM_ENVELOPES];
+ let mut q_m_lim_boost = [[0.0; SBR_BANDS]; NUM_ENVELOPES];
+ let mut s_m_boost = [[0.0; SBR_BANDS]; NUM_ENVELOPES];
+ for env in 0..self.num_env {
+ let mut start = kx;
+ g_max_tmp = [0.0; SBR_BANDS];
+ g_boost_tmp = [0.0; SBR_BANDS];
+ for (dst, &end) in g_max_tmp.iter_mut().zip(state.f_lim[1..=state.num_lim].iter()) {
+ let mut e_o_sum = EPS0;
+ let mut e_c_sum = EPS0;
+ for k in start..end {
+ e_o_sum += e_orig_mapped[env][k] as f32;
+ e_c_sum += e_curr[env][k];
+ }
+ *dst = (e_o_sum / e_c_sum).sqrt() * LIM_GAIN[hdr.limiter_gains as usize];
+ start = end;
+ }
+ for k in kx..km {
+ let e_orig = e_orig_mapped[env][k] as f32;
+ let q_orig = q_mapped[env][k] as f32;
+ let e_curr = e_curr[env][k];
+
+ q_m[k] = (e_orig * q_orig / (1.0 + q_orig)).sqrt();
+ s_m[k] = if self.s_idx_mapped[env][k] { (e_orig / (1.0 + q_orig)).sqrt() } else { 0.0 };
+ g[k] = if !s_mapped[env][k] {
+ let q_add = if (env as i8) != l_a && (env as i8) != la_prev { q_orig } else { 0.0 };
+ (e_orig / ((EPS + e_curr) * (1.0 + q_add))).sqrt()
+ } else {
+ (e_orig / (EPS + e_curr) * q_orig / (1.0 + q_orig)).sqrt()
+ };
+
+ let mut lidx = 0;
+ for i in 0..state.num_lim {
+ if (state.f_lim[i] <= k) && (k < state.f_lim[i + 1]) {
+ lidx = i;
+ break;
+ }
+ }
+
+ let g_max = g_max_tmp[lidx].min(1.0e5);
+ q_m_lim[k] = q_m[k].min(q_m[k] * g_max / g[k]);
+ g_lim[k] = g[k].min(g_max);
+ }
+ let mut start = kx;
+ for (lim_no, dst) in g_boost_tmp[..state.num_lim].iter_mut().enumerate() {
+ let end = state.f_lim[lim_no + 1];
+ let mut nsum = EPS0;
+ let mut dsum = EPS0;
+ for k in start..end {
+ nsum += e_orig_mapped[env][k] as f32;
+ dsum += e_curr[env][k] * g_lim[k] * g_lim[k];
+ if s_m[k] != 0.0 || (env as i8) == l_a || (env as i8) == la_prev {
+ dsum += s_m[k] * s_m[k];
+ } else {
+ dsum += q_m_lim[k] * q_m_lim[k];
+ }
+ }
+ *dst = (nsum / dsum).sqrt();
+ let g_boost = dst.min(1.584893192);
+ for k in start..end {
+ g_lim_boost[env][k] = g_lim[k] * g_boost;
+ q_m_lim_boost[env][k] = q_m_lim[k] * g_boost;
+ s_m_boost[env][k] = s_m[k] * g_boost;
+ }
+ start = end;
+ }
+ }
+
+ let mut env_map = [0; MAX_SLOTS * 2 + QMF_DELAY];
+ let mut start = 0;
+ for (env, &env_end) in self.env_border[..self.num_env].iter().enumerate() {
+ for l in (start * 2)..(env_end * 2) {
+ env_map[l] = env;
+ }
+ start = env_end;
+ }
+
+ let (ghead, gcur) = self.g_temp.split_at_mut(SMOOTH_DELAY);
+ let (qhead, qcur) = self.q_temp.split_at_mut(SMOOTH_DELAY);
+ if self.last_env_end > 0 {
+ ghead.copy_from_slice(&gcur[self.last_env_end - SMOOTH_DELAY..][..SMOOTH_DELAY]);
+ qhead.copy_from_slice(&qcur[self.last_env_end - SMOOTH_DELAY..][..SMOOTH_DELAY]);
+ let mut start = 0;
+ for (&env_end, (g_lim, q_lim)) in self.env_border[..self.num_env].iter().zip(g_lim_boost.iter().zip(q_m_lim_boost.iter())) {
+ for slot in (start * 2)..(env_end * 2) {
+ gcur[slot] = *g_lim;
+ qcur[slot] = *q_lim;
+ }
+ start = env_end;
+ }
+ } else {
+ for dst in ghead.iter_mut() {
+ *dst = g_lim_boost[0];
+ }
+ for dst in qhead.iter_mut() {
+ *dst = q_m_lim_boost[0];
+ }
+ let mut start = 0;
+ for (&env_end, (g_lim, q_lim)) in self.env_border[..self.num_env].iter().zip(g_lim_boost.iter().zip(q_m_lim_boost.iter())) {
+ for slot in (start * 2)..(env_end * 2) {
+ gcur[slot] = *g_lim;
+ qcur[slot] = *q_lim;
+ }
+ start = env_end;
+ }
+ }
+
+ let mut g_filt = [[0.0; SBR_BANDS]; MAX_SLOTS * 2 + QMF_DELAY];
+ let mut q_filt = [[0.0; SBR_BANDS]; MAX_SLOTS * 2 + QMF_DELAY];
+ if !hdr.smoothing_mode {
+ for slot in 0..(envelope_end * 2) {
+ if (slot as i8) == (la_prev * 2) {
+ g_filt[slot].copy_from_slice(&self.g_temp[slot + SMOOTH_DELAY]);
+ q_filt[slot].copy_from_slice(&self.q_temp[slot + SMOOTH_DELAY]);
+ continue;
+ }
+ for k in kx..km {
+ let mut gsum = 0.0;
+ let mut qsum = 0.0;
+ for (i, &coef) in H_SMOOTH.iter().enumerate() {
+ gsum += self.g_temp[slot + SMOOTH_DELAY - i][k] * coef;
+ qsum += self.q_temp[slot + SMOOTH_DELAY - i][k] * coef;
+ }
+ g_filt[slot][k] = gsum;
+ q_filt[slot][k] = qsum;
+ }
+ }
+ } else {
+ g_filt.copy_from_slice(gcur);
+ q_filt.copy_from_slice(qcur);
+ }
+
+ let index_noise = self.index_noise.wrapping_sub(self.env_border[0] * 2) & 511;
+ for (slot, y) in self.y.iter_mut().skip(HF_ADJ).take(envelope_end * 2).enumerate() {
+ for (k, y) in y.iter_mut().enumerate().skip(kx).take(km - kx) {
+ *y = self.x_high[HF_ADJ + slot][k].scale(g_filt[slot][k]);
+
+ let smb = s_m_boost[env_map[slot]][k] / RANGE;
+ if smb != 0.0 {
+ let mut s = FFTComplex { re: smb, im: smb };
+ if (k & 1) != 0 {
+ s = !s;
+ }
+ y.re += s.re * PHI[self.index_sine].re;
+ y.im += s.im * PHI[self.index_sine].im;
+ } else {
+ *y += SBR_NOISE_TABLE[(index_noise + slot * SBR_BANDS + k - kx + 1) & 511].scale(q_filt[slot][k] / RANGE);
+ }
+ }
+ self.index_sine = (self.index_sine + 1) & 3;
+ }
+ self.index_noise = (index_noise + km - kx) & 511;
+
+ let end = if self.last_env_end != 0 {
+ (self.last_env_end - MAX_SLOTS) * 2
+ } else {
+ 0
+ };
+ self.last_env_end = envelope_end;
+ for (i, x) in self.x[..end].iter_mut().enumerate() {
+ x[state.k_x..].copy_from_slice(&self.prev_y[HF_ADJ + MAX_SLOTS * 2 + i][state.k_x..]);
+ }
+ for (x, y) in self.x[end..].iter_mut().zip(self.y[HF_ADJ + end..].iter()) {
+ x[state.k_x..].copy_from_slice(&y[state.k_x..]);
+ }
+
+ self.prev_l_a = l_a;
+ }
+ pub fn update_frame(&mut self) {
+ let (start, tail) = self.w.split_at_mut(QMF_DELAY);
+ start.copy_from_slice(&tail[tail.len() - QMF_DELAY..]);
+ self.prev_y = self.y;
+ self.old_invf_mode = self.invf_mode;
+ self.old_bw_array = self.bw_array;
+
+ self.prev_num_env = self.num_env;
+ }
+}
+
+const SBR_NOISE_TABLE: [FFTComplex; 512] = [
+ FFTComplex{ re: -0.99948153278296, im: -0.59483417516607 },
+ FFTComplex{ re: 0.97113454393991, im: -0.67528515225647 },
+ FFTComplex{ re: 0.14130051758487, im: -0.95090983575689 },
+ FFTComplex{ re: -0.47005496701697, im: -0.37340549728647 },
+ FFTComplex{ re: 0.80705063769351, im: 0.29653668284408 },
+ FFTComplex{ re: -0.38981478896926, im: 0.89572605717087 },
+ FFTComplex{ re: -0.01053049862020, im: -0.66959058036166 },
+ FFTComplex{ re: -0.91266367957293, im: -0.11522938140034 },
+ FFTComplex{ re: 0.54840422910309, im: 0.75221367176302 },
+ FFTComplex{ re: 0.40009252867955, im: -0.98929400334421 },
+ FFTComplex{ re: -0.99867974711855, im: -0.88147068645358 },
+ FFTComplex{ re: -0.95531076805040, im: 0.90908757154593 },
+ FFTComplex{ re: -0.45725933317144, im: -0.56716323646760 },
+ FFTComplex{ re: -0.72929675029275, im: -0.98008272727324 },
+ FFTComplex{ re: 0.75622801399036, im: 0.20950329995549 },
+ FFTComplex{ re: 0.07069442601050, im: -0.78247898470706 },
+ FFTComplex{ re: 0.74496252926055, im: -0.91169004445807 },
+ FFTComplex{ re: -0.96440182703856, im: -0.94739918296622 },
+ FFTComplex{ re: 0.30424629369539, im: -0.49438267012479 },
+ FFTComplex{ re: 0.66565033746925, im: 0.64652935542491 },
+ FFTComplex{ re: 0.91697008020594, im: 0.17514097332009 },
+ FFTComplex{ re: -0.70774918760427, im: 0.52548653416543 },
+ FFTComplex{ re: -0.70051415345560, im: -0.45340028808763 },
+ FFTComplex{ re: -0.99496513054797, im: -0.90071908066973 },
+ FFTComplex{ re: 0.98164490790123, im: -0.77463155528697 },
+ FFTComplex{ re: -0.54671580548181, im: -0.02570928536004 },
+ FFTComplex{ re: -0.01689629065389, im: 0.00287506445732 },
+ FFTComplex{ re: -0.86110349531986, im: 0.42548583726477 },
+ FFTComplex{ re: -0.98892980586032, im: -0.87881132267556 },
+ FFTComplex{ re: 0.51756627678691, im: 0.66926784710139 },
+ FFTComplex{ re: -0.99635026409640, im: -0.58107730574765 },
+ FFTComplex{ re: -0.99969370862163, im: 0.98369989360250 },
+ FFTComplex{ re: 0.55266258627194, im: 0.59449057465591 },
+ FFTComplex{ re: 0.34581177741673, im: 0.94879421061866 },
+ FFTComplex{ re: 0.62664209577999, im: -0.74402970906471 },
+ FFTComplex{ re: -0.77149701404973, im: -0.33883658042801 },
+ FFTComplex{ re: -0.91592244254432, im: 0.03687901376713 },
+ FFTComplex{ re: -0.76285492357887, im: -0.91371867919124 },
+ FFTComplex{ re: 0.79788337195331, im: -0.93180971199849 },
+ FFTComplex{ re: 0.54473080610200, im: -0.11919206037186 },
+ FFTComplex{ re: -0.85639281671058, im: 0.42429854760451 },
+ FFTComplex{ re: -0.92882402971423, im: 0.27871809078609 },
+ FFTComplex{ re: -0.11708371046774, im: -0.99800843444966 },
+ FFTComplex{ re: 0.21356749817493, im: -0.90716295627033 },
+ FFTComplex{ re: -0.76191692573909, im: 0.99768118356265 },
+ FFTComplex{ re: 0.98111043100884, im: -0.95854459734407 },
+ FFTComplex{ re: -0.85913269895572, im: 0.95766566168880 },
+ FFTComplex{ re: -0.93307242253692, im: 0.49431757696466 },
+ FFTComplex{ re: 0.30485754879632, im: -0.70540034357529 },
+ FFTComplex{ re: 0.85289650925190, im: 0.46766131791044 },
+ FFTComplex{ re: 0.91328082618125, im: -0.99839597361769 },
+ FFTComplex{ re: -0.05890199924154, im: 0.70741827819497 },
+ FFTComplex{ re: 0.28398686150148, im: 0.34633555702188 },
+ FFTComplex{ re: 0.95258164539612, im: -0.54893416026939 },
+ FFTComplex{ re: -0.78566324168507, im: -0.75568541079691 },
+ FFTComplex{ re: -0.95789495447877, im: -0.20423194696966 },
+ FFTComplex{ re: 0.82411158711197, im: 0.96654618432562 },
+ FFTComplex{ re: -0.65185446735885, im: -0.88734990773289 },
+ FFTComplex{ re: -0.93643603134666, im: 0.99870790442385 },
+ FFTComplex{ re: 0.91427159529618, im: -0.98290505544444 },
+ FFTComplex{ re: -0.70395684036886, im: 0.58796798221039 },
+ FFTComplex{ re: 0.00563771969365, im: 0.61768196727244 },
+ FFTComplex{ re: 0.89065051931895, im: 0.52783352697585 },
+ FFTComplex{ re: -0.68683707712762, im: 0.80806944710339 },
+ FFTComplex{ re: 0.72165342518718, im: -0.69259857349564 },
+ FFTComplex{ re: -0.62928247730667, im: 0.13627037407335 },
+ FFTComplex{ re: 0.29938434065514, im: -0.46051329682246 },
+ FFTComplex{ re: -0.91781958879280, im: -0.74012716684186 },
+ FFTComplex{ re: 0.99298717043688, im: 0.40816610075661 },
+ FFTComplex{ re: 0.82368298622748, im: -0.74036047190173 },
+ FFTComplex{ re: -0.98512833386833, im: -0.99972330709594 },
+ FFTComplex{ re: -0.95915368242257, im: -0.99237800466040 },
+ FFTComplex{ re: -0.21411126572790, im: -0.93424819052545 },
+ FFTComplex{ re: -0.68821476106884, im: -0.26892306315457 },
+ FFTComplex{ re: 0.91851997982317, im: 0.09358228901785 },
+ FFTComplex{ re: -0.96062769559127, im: 0.36099095133739 },
+ FFTComplex{ re: 0.51646184922287, im: -0.71373332873917 },
+ FFTComplex{ re: 0.61130721139669, im: 0.46950141175917 },
+ FFTComplex{ re: 0.47336129371299, im: -0.27333178296162 },
+ FFTComplex{ re: 0.90998308703519, im: 0.96715662938132 },
+ FFTComplex{ re: 0.44844799194357, im: 0.99211574628306 },
+ FFTComplex{ re: 0.66614891079092, im: 0.96590176169121 },
+ FFTComplex{ re: 0.74922239129237, im: -0.89879858826087 },
+ FFTComplex{ re: -0.99571588506485, im: 0.52785521494349 },
+ FFTComplex{ re: 0.97401082477563, im: -0.16855870075190 },
+ FFTComplex{ re: 0.72683747733879, im: -0.48060774432251 },
+ FFTComplex{ re: 0.95432193457128, im: 0.68849603408441 },
+ FFTComplex{ re: -0.72962208425191, im: -0.76608443420917 },
+ FFTComplex{ re: -0.85359479233537, im: 0.88738125901579 },
+ FFTComplex{ re: -0.81412430338535, im: -0.97480768049637 },
+ FFTComplex{ re: -0.87930772356786, im: 0.74748307690436 },
+ FFTComplex{ re: -0.71573331064977, im: -0.98570608178923 },
+ FFTComplex{ re: 0.83524300028228, im: 0.83702537075163 },
+ FFTComplex{ re: -0.48086065601423, im: -0.98848504923531 },
+ FFTComplex{ re: 0.97139128574778, im: 0.80093621198236 },
+ FFTComplex{ re: 0.51992825347895, im: 0.80247631400510 },
+ FFTComplex{ re: -0.00848591195325, im: -0.76670128000486 },
+ FFTComplex{ re: -0.70294374303036, im: 0.55359910445577 },
+ FFTComplex{ re: -0.95894428168140, im: -0.43265504344783 },
+ FFTComplex{ re: 0.97079252950321, im: 0.09325857238682 },
+ FFTComplex{ re: -0.92404293670797, im: 0.85507704027855 },
+ FFTComplex{ re: -0.69506469500450, im: 0.98633412625459 },
+ FFTComplex{ re: 0.26559203620024, im: 0.73314307966524 },
+ FFTComplex{ re: 0.28038443336943, im: 0.14537913654427 },
+ FFTComplex{ re: -0.74138124825523, im: 0.99310339807762 },
+ FFTComplex{ re: -0.01752795995444, im: -0.82616635284178 },
+ FFTComplex{ re: -0.55126773094930, im: -0.98898543862153 },
+ FFTComplex{ re: 0.97960898850996, im: -0.94021446752851 },
+ FFTComplex{ re: -0.99196309146936, im: 0.67019017358456 },
+ FFTComplex{ re: -0.67684928085260, im: 0.12631491649378 },
+ FFTComplex{ re: 0.09140039465500, im: -0.20537731453108 },
+ FFTComplex{ re: -0.71658965751996, im: -0.97788200391224 },
+ FFTComplex{ re: 0.81014640078925, im: 0.53722648362443 },
+ FFTComplex{ re: 0.40616991671205, im: -0.26469008598449 },
+ FFTComplex{ re: -0.67680188682972, im: 0.94502052337695 },
+ FFTComplex{ re: 0.86849774348749, im: -0.18333598647899 },
+ FFTComplex{ re: -0.99500381284851, im: -0.02634122068550 },
+ FFTComplex{ re: 0.84329189340667, im: 0.10406957462213 },
+ FFTComplex{ re: -0.09215968531446, im: 0.69540012101253 },
+ FFTComplex{ re: 0.99956173327206, im: -0.12358542001404 },
+ FFTComplex{ re: -0.79732779473535, im: -0.91582524736159 },
+ FFTComplex{ re: 0.96349973642406, im: 0.96640458041000 },
+ FFTComplex{ re: -0.79942778496547, im: 0.64323902822857 },
+ FFTComplex{ re: -0.11566039853896, im: 0.28587846253726 },
+ FFTComplex{ re: -0.39922954514662, im: 0.94129601616966 },
+ FFTComplex{ re: 0.99089197565987, im: -0.92062625581587 },
+ FFTComplex{ re: 0.28631285179909, im: -0.91035047143603 },
+ FFTComplex{ re: -0.83302725605608, im: -0.67330410892084 },
+ FFTComplex{ re: 0.95404443402072, im: 0.49162765398743 },
+ FFTComplex{ re: -0.06449863579434, im: 0.03250560813135 },
+ FFTComplex{ re: -0.99575054486311, im: 0.42389784469507 },
+ FFTComplex{ re: -0.65501142790847, im: 0.82546114655624 },
+ FFTComplex{ re: -0.81254441908887, im: -0.51627234660629 },
+ FFTComplex{ re: -0.99646369485481, im: 0.84490533520752 },
+ FFTComplex{ re: 0.00287840603348, im: 0.64768261158166 },
+ FFTComplex{ re: 0.70176989408455, im: -0.20453028573322 },
+ FFTComplex{ re: 0.96361882270190, im: 0.40706967140989 },
+ FFTComplex{ re: -0.68883758192426, im: 0.91338958840772 },
+ FFTComplex{ re: -0.34875585502238, im: 0.71472290693300 },
+ FFTComplex{ re: 0.91980081243087, im: 0.66507455644919 },
+ FFTComplex{ re: -0.99009048343881, im: 0.85868021604848 },
+ FFTComplex{ re: 0.68865791458395, im: 0.55660316809678 },
+ FFTComplex{ re: -0.99484402129368, im: -0.20052559254934 },
+ FFTComplex{ re: 0.94214511408023, im: -0.99696425367461 },
+ FFTComplex{ re: -0.67414626793544, im: 0.49548221180078 },
+ FFTComplex{ re: -0.47339353684664, im: -0.85904328834047 },
+ FFTComplex{ re: 0.14323651387360, im: -0.94145598222488 },
+ FFTComplex{ re: -0.29268293575672, im: 0.05759224927952 },
+ FFTComplex{ re: 0.43793861458754, im: -0.78904969892724 },
+ FFTComplex{ re: -0.36345126374441, im: 0.64874435357162 },
+ FFTComplex{ re: -0.08750604656825, im: 0.97686944362527 },
+ FFTComplex{ re: -0.96495267812511, im: -0.53960305946511 },
+ FFTComplex{ re: 0.55526940659947, im: 0.78891523734774 },
+ FFTComplex{ re: 0.73538215752630, im: 0.96452072373404 },
+ FFTComplex{ re: -0.30889773919437, im: -0.80664389776860 },
+ FFTComplex{ re: 0.03574995626194, im: -0.97325616900959 },
+ FFTComplex{ re: 0.98720684660488, im: 0.48409133691962 },
+ FFTComplex{ re: -0.81689296271203, im: -0.90827703628298 },
+ FFTComplex{ re: 0.67866860118215, im: 0.81284503870856 },
+ FFTComplex{ re: -0.15808569732583, im: 0.85279555024382 },
+ FFTComplex{ re: 0.80723395114371, im: -0.24717418514605 },
+ FFTComplex{ re: 0.47788757329038, im: -0.46333147839295 },
+ FFTComplex{ re: 0.96367554763201, im: 0.38486749303242 },
+ FFTComplex{ re: -0.99143875716818, im: -0.24945277239809 },
+ FFTComplex{ re: 0.83081876925833, im: -0.94780851414763 },
+ FFTComplex{ re: -0.58753191905341, im: 0.01290772389163 },
+ FFTComplex{ re: 0.95538108220960, im: -0.85557052096538 },
+ FFTComplex{ re: -0.96490920476211, im: -0.64020970923102 },
+ FFTComplex{ re: -0.97327101028521, im: 0.12378128133110 },
+ FFTComplex{ re: 0.91400366022124, im: 0.57972471346930 },
+ FFTComplex{ re: -0.99925837363824, im: 0.71084847864067 },
+ FFTComplex{ re: -0.86875903507313, im: -0.20291699203564 },
+ FFTComplex{ re: -0.26240034795124, im: -0.68264554369108 },
+ FFTComplex{ re: -0.24664412953388, im: -0.87642273115183 },
+ FFTComplex{ re: 0.02416275806869, im: 0.27192914288905 },
+ FFTComplex{ re: 0.82068619590515, im: -0.85087787994476 },
+ FFTComplex{ re: 0.88547373760759, im: -0.89636802901469 },
+ FFTComplex{ re: -0.18173078152226, im: -0.26152145156800 },
+ FFTComplex{ re: 0.09355476558534, im: 0.54845123045604 },
+ FFTComplex{ re: -0.54668414224090, im: 0.95980774020221 },
+ FFTComplex{ re: 0.37050990604091, im: -0.59910140383171 },
+ FFTComplex{ re: -0.70373594262891, im: 0.91227665827081 },
+ FFTComplex{ re: -0.34600785879594, im: -0.99441426144200 },
+ FFTComplex{ re: -0.68774481731008, im: -0.30238837956299 },
+ FFTComplex{ re: -0.26843291251234, im: 0.83115668004362 },
+ FFTComplex{ re: 0.49072334613242, im: -0.45359708737775 },
+ FFTComplex{ re: 0.38975993093975, im: 0.95515358099121 },
+ FFTComplex{ re: -0.97757125224150, im: 0.05305894580606 },
+ FFTComplex{ re: -0.17325552859616, im: -0.92770672250494 },
+ FFTComplex{ re: 0.99948035025744, im: 0.58285545563426 },
+ FFTComplex{ re: -0.64946246527458, im: 0.68645507104960 },
+ FFTComplex{ re: -0.12016920576437, im: -0.57147322153312 },
+ FFTComplex{ re: -0.58947456517751, im: -0.34847132454388 },
+ FFTComplex{ re: -0.41815140454465, im: 0.16276422358861 },
+ FFTComplex{ re: 0.99885650204884, im: 0.11136095490444 },
+ FFTComplex{ re: -0.56649614128386, im: -0.90494866361587 },
+ FFTComplex{ re: 0.94138021032330, im: 0.35281916733018 },
+ FFTComplex{ re: -0.75725076534641, im: 0.53650549640587 },
+ FFTComplex{ re: 0.20541973692630, im: -0.94435144369918 },
+ FFTComplex{ re: 0.99980371023351, im: 0.79835913565599 },
+ FFTComplex{ re: 0.29078277605775, im: 0.35393777921520 },
+ FFTComplex{ re: -0.62858772103030, im: 0.38765693387102 },
+ FFTComplex{ re: 0.43440904467688, im: -0.98546330463232 },
+ FFTComplex{ re: -0.98298583762390, im: 0.21021524625209 },
+ FFTComplex{ re: 0.19513029146934, im: -0.94239832251867 },
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+ FFTComplex{ re: -0.95434497492853, im: -0.79607978501983 },
+ FFTComplex{ re: -0.49104783137150, im: 0.32895214359663 },
+ FFTComplex{ re: 0.99881175120751, im: 0.88993983831354 },
+ FFTComplex{ re: 0.50449166760303, im: -0.85995072408434 },
+ FFTComplex{ re: 0.47162891065108, im: -0.18680204049569 },
+ FFTComplex{ re: -0.62081581361840, im: 0.75000676218956 },
+ FFTComplex{ re: -0.43867015250812, im: 0.99998069244322 },
+ FFTComplex{ re: 0.98630563232075, im: -0.53578899600662 },
+ FFTComplex{ re: -0.61510362277374, im: -0.89515019899997 },
+ FFTComplex{ re: -0.03841517601843, im: -0.69888815681179 },
+ FFTComplex{ re: -0.30102157304644, im: -0.07667808922205 },
+ FFTComplex{ re: 0.41881284182683, im: 0.02188098922282 },
+ FFTComplex{ re: -0.86135454941237, im: 0.98947480909359 },
+ FFTComplex{ re: 0.67226861393788, im: -0.13494389011014 },
+ FFTComplex{ re: -0.70737398842068, im: -0.76547349325992 },
+ FFTComplex{ re: 0.94044946687963, im: 0.09026201157416 },
+ FFTComplex{ re: -0.82386352534327, im: 0.08924768823676 },
+ FFTComplex{ re: -0.32070666698656, im: 0.50143421908753 },
+ FFTComplex{ re: 0.57593163224487, im: -0.98966422921509 },
+ FFTComplex{ re: -0.36326018419965, im: 0.07440243123228 },
+ FFTComplex{ re: 0.99979044674350, im: -0.14130287347405 },
+ FFTComplex{ re: -0.92366023326932, im: -0.97979298068180 },
+ FFTComplex{ re: -0.44607178518598, im: -0.54233252016394 },
+ FFTComplex{ re: 0.44226800932956, im: 0.71326756742752 },
+ FFTComplex{ re: 0.03671907158312, im: 0.63606389366675 },
+ FFTComplex{ re: 0.52175424682195, im: -0.85396826735705 },
+ FFTComplex{ re: -0.94701139690956, im: -0.01826348194255 },
+ FFTComplex{ re: -0.98759606946049, im: 0.82288714303073 },
+ FFTComplex{ re: 0.87434794743625, im: 0.89399495655433 },
+ FFTComplex{ re: -0.93412041758744, im: 0.41374052024363 },
+ FFTComplex{ re: 0.96063943315511, im: 0.93116709541280 },
+ FFTComplex{ re: 0.97534253457837, im: 0.86150930812689 },
+ FFTComplex{ re: 0.99642466504163, im: 0.70190043427512 },
+ FFTComplex{ re: -0.94705089665984, im: -0.29580042814306 },
+ FFTComplex{ re: 0.91599807087376, im: -0.98147830385781 },
+];
projects / nihav.git / blobdiff