rustpbx 0.4.9

A SIP PBX implementation in Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

//! Tests for FileAudioSource pre-decode cache behaviour.

use super::AudioSource;
use super::FileAudioSource;
use super::mix_stereo_to_mono;
use crate::media::wav_reader::{SampleFormat, WavSpec, WavWriter};
use tempfile::NamedTempFile;

fn write_wav(sample_rate: u32, samples: &[i16]) -> NamedTempFile {
    let mut tmp = NamedTempFile::with_suffix(".wav").expect("tempfile");
    {
        let spec = WavSpec {
            channels: 1,
            sample_rate,
            bits_per_sample: 16,
            sample_format: SampleFormat::Int,
        };
        let mut writer =
            WavWriter::new(std::io::BufWriter::new(tmp.as_file_mut()), spec).expect("WavWriter");
        for &s in samples {
            writer.write_sample(s).expect("write_sample");
        }
        writer.finalize().expect("finalize");
    }
    tmp
}

fn write_stereo_wav(sample_rate: u32, samples: &[i16]) -> NamedTempFile {
    let mut tmp = NamedTempFile::with_suffix(".wav").expect("tempfile");
    {
        let spec = WavSpec {
            channels: 2,
            sample_rate,
            bits_per_sample: 16,
            sample_format: SampleFormat::Int,
        };
        let mut writer =
            WavWriter::new(std::io::BufWriter::new(tmp.as_file_mut()), spec).expect("WavWriter");
        for &s in samples {
            writer.write_sample(s).expect("write_sample");
        }
        writer.finalize().expect("finalize");
    }
    tmp
}

#[tokio::test]
async fn test_predecode_small_wav() {
    let samples: Vec<i16> = (0..4000).map(|i| (i % 1024) as i16).collect();
    let tmp = write_wav(8000, &samples);
    let path = tmp.path().to_string_lossy().to_string();

    let mut src = FileAudioSource::new(path, false).await.unwrap();
    assert!(
        !src.pcm_cache.is_empty(),
        "small file should be pre-decoded"
    );
    assert_eq!(src.pcm_cache.len(), 4000);
    assert_eq!(src.cached_channels, 1);
    assert_eq!(src.cached_sample_rate, 8000);

    let mut buf = vec![0i16; 320];
    let n = src.read_samples(&mut buf);
    assert_eq!(n, 320);
    assert_eq!(buf[0], 0);
    assert_eq!(buf[159], 159);
    assert_eq!(src.pcm_cache_pos, 320);

    let remaining = src.pcm_cache.len() - src.pcm_cache_pos;
    let mut big = vec![0i16; 5000];
    let n = src.read_samples(&mut big);
    assert_eq!(n, remaining);
    assert!(src.eof_reached);

    let mut buf2 = vec![0i16; 160];
    assert_eq!(src.read_samples(&mut buf2), 0);
}

#[tokio::test]
async fn test_predecode_loop_reset() {
    let samples: Vec<i16> = (0..800).map(|i| i as i16).collect();
    let tmp = write_wav(8000, &samples);
    let path = tmp.path().to_string_lossy().to_string();

    let mut src = FileAudioSource::new(path, true).await.unwrap();
    assert!(!src.pcm_cache.is_empty());

    let mut buf = vec![0i16; 400];
    assert_eq!(src.read_samples(&mut buf), 400);
    assert_eq!(src.read_samples(&mut buf), 400);
    assert!(src.eof_reached);

    let mut buf2 = vec![0i16; 160];
    assert_eq!(src.read_samples(&mut buf2), 160);
    assert_eq!(buf2[0], 0);
    assert!(!src.eof_reached);
}

#[tokio::test]
async fn test_predecode_skip_large_file() {
    let samples = vec![0i16; 4_000_000];
    let tmp = write_wav(8000, &samples);
    let path = tmp.path().to_string_lossy().to_string();

    let src = FileAudioSource::new(path, false).await.unwrap();
    assert!(
        src.pcm_cache.is_empty(),
        "file > 5 MB should skip pre-decode"
    );
    assert!(
        src.wav_reader.is_some(),
        "streaming reader should be present"
    );
}

#[test]
fn test_mix_stereo_to_mono_two_channels() {
    let stereo = vec![10i16, 20, 30, 40, 50, 60];
    let mono = mix_stereo_to_mono(&stereo, 2);
    assert_eq!(mono.len(), 3);
    assert_eq!(mono[0], 15);
    assert_eq!(mono[1], 35);
    assert_eq!(mono[2], 55);
}

#[test]
fn test_mix_stereo_to_mono_identity() {
    let mono_in = vec![42i16, 100, -50];
    let mono_out = mix_stereo_to_mono(&mono_in, 1);
    assert_eq!(mono_out, mono_in);
}

#[tokio::test]
async fn test_predecode_respects_channels() {
    let samples: Vec<i16> = (0..800).map(|i| i as i16).collect();
    let tmp = write_stereo_wav(8000, &samples);
    let path = tmp.path().to_string_lossy().to_string();

    let src = FileAudioSource::new(path, false).await.unwrap();
    assert!(!src.pcm_cache.is_empty());
    assert_eq!(src.pcm_cache.len(), 400);
    assert_eq!(src.cached_channels, 1);
}