symphonia_codec_aac/aac/ics/
ltp.rs

1// Symphonia
2// Copyright (c) 2019-2022 The Project Symphonia Developers.
3//
4// Previous Author: Kostya Shishkov <kostya.shiskov@gmail.com>
5//
6// This source file includes code originally written for the NihAV
7// project. With the author's permission, it has been relicensed for,
8// and ported to the Symphonia project.
9//
10// This Source Code Form is subject to the terms of the Mozilla Public
11// License, v. 2.0. If a copy of the MPL was not distributed with this
12// file, You can obtain one at https://mozilla.org/MPL/2.0/.
13
14use symphonia_core::errors::{unsupported_error, Result};
15use symphonia_core::io::ReadBitsLtr;
16
17#[derive(Clone, Copy)]
18pub struct LtpData {}
19
20impl LtpData {
21    pub fn read<B: ReadBitsLtr>(bs: &mut B) -> Result<Option<Self>> {
22        let predictor_data_present = bs.read_bool()?;
23
24        if !predictor_data_present {
25            return Ok(None);
26        }
27
28        /*
29        if is_main {
30            let predictor_reset                         = bs.read_bit()?;
31            if predictor_reset {
32                let predictor_reset_group_number        = bs.read_bits_leq32(5)?;
33            }
34            for sfb in 0..max_sfb.min(PRED_SFB_MAX) {
35                prediction_used[sfb]                    = bs.read_bit()?;
36            }
37        }
38        else {
39            let ltp_data_present                        = bs.read_bit()?;
40            if ltp_data_present {
41                //ltp data
42            }
43            if common_window {
44                let ltp_data_present                    = bs.read_bit()?;
45                if ltp_data_present {
46                    //ltp data
47                }
48            }
49        }
50        Ok(Some(Self { }))
51        */
52
53        unsupported_error("aac: predictor data")
54    }
55}
symphonia_codec_aac/aac/ics/ltp.rs

symphonia_codec_aac/aac/ics/
ltp.rs
