unsafe-libopus 0.2.0

libopus transpiled to rust by c2rust
Documentation 
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use crate::silk::lin2log::silk_lin2log;

use crate::silk::define::TYPE_VOICED;
use crate::silk::float::structs_FLP::silk_encoder_state_FLP;
use crate::silk::structs::silk_encoder_state;

pub unsafe fn silk_HP_variable_cutoff(state_Fxx: *mut silk_encoder_state_FLP) {
    let mut quality_Q15: i32 = 0;
    let mut pitch_freq_Hz_Q16: i32 = 0;
    let mut pitch_freq_log_Q7: i32 = 0;
    let mut delta_freq_Q7: i32 = 0;
    let psEncC1: *mut silk_encoder_state = &mut (*state_Fxx.offset(0 as isize)).sCmn;
    if (*psEncC1).prevSignalType as i32 == TYPE_VOICED {
        pitch_freq_Hz_Q16 = ((((*psEncC1).fs_kHz * 1000) as u32) << 16) as i32 / (*psEncC1).prevLag;
        pitch_freq_log_Q7 = silk_lin2log(pitch_freq_Hz_Q16) - ((16) << 7);
        quality_Q15 = (*psEncC1).input_quality_bands_Q15[0 as usize];
        pitch_freq_log_Q7 = (pitch_freq_log_Q7 as i64
            + ((((-quality_Q15 as u32) << 2) as i32 as i64 * quality_Q15 as i16 as i64 >> 16) as i32
                as i64
                * (pitch_freq_log_Q7
                    - (silk_lin2log(((60 * ((1) << 16)) as f64 + 0.5f64) as i32) - ((16) << 7)))
                    as i16 as i64
                >> 16)) as i32;
        delta_freq_Q7 = pitch_freq_log_Q7 - ((*psEncC1).variable_HP_smth1_Q15 >> 8);
        if delta_freq_Q7 < 0 {
            delta_freq_Q7 = delta_freq_Q7 * 3;
        }
        delta_freq_Q7 = if -(((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32)
            > ((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32
        {
            if delta_freq_Q7 > -(((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32) {
                -(((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32)
            } else if delta_freq_Q7 < ((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32 {
                ((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32
            } else {
                delta_freq_Q7
            }
        } else if delta_freq_Q7 > ((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32 {
            ((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32
        } else if delta_freq_Q7 < -(((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32) {
            -(((0.4f32 * ((1) << 7) as f32) as f64 + 0.5f64) as i32)
        } else {
            delta_freq_Q7
        };
        (*psEncC1).variable_HP_smth1_Q15 = ((*psEncC1).variable_HP_smth1_Q15 as i64
            + (((*psEncC1).speech_activity_Q8 as i16 as i32 * delta_freq_Q7 as i16 as i32) as i64
                * ((0.1f32 * ((1) << 16) as f32) as f64 + 0.5f64) as i32 as i16 as i64
                >> 16)) as i32;
        (*psEncC1).variable_HP_smth1_Q15 = if ((silk_lin2log(60) as u32) << 8) as i32
            > ((silk_lin2log(100) as u32) << 8) as i32
        {
            if (*psEncC1).variable_HP_smth1_Q15 > ((silk_lin2log(60) as u32) << 8) as i32 {
                ((silk_lin2log(60) as u32) << 8) as i32
            } else if (*psEncC1).variable_HP_smth1_Q15 < ((silk_lin2log(100) as u32) << 8) as i32 {
                ((silk_lin2log(100) as u32) << 8) as i32
            } else {
                (*psEncC1).variable_HP_smth1_Q15
            }
        } else if (*psEncC1).variable_HP_smth1_Q15 > ((silk_lin2log(100) as u32) << 8) as i32 {
            ((silk_lin2log(100) as u32) << 8) as i32
        } else if (*psEncC1).variable_HP_smth1_Q15 < ((silk_lin2log(60) as u32) << 8) as i32 {
            ((silk_lin2log(60) as u32) << 8) as i32
        } else {
            (*psEncC1).variable_HP_smth1_Q15
        };
    }
}