cpal/host/null/
mod.rs

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1use std::time::Duration;
2
3use crate::traits::{DeviceTrait, HostTrait, StreamTrait};
4use crate::{
5    BuildStreamError, Data, DefaultStreamConfigError, DeviceNameError, DevicesError,
6    InputCallbackInfo, OutputCallbackInfo, PauseStreamError, PlayStreamError, SampleFormat,
7    StreamConfig, StreamError, SupportedStreamConfig, SupportedStreamConfigRange,
8    SupportedStreamConfigsError,
9};
10
11#[derive(Default)]
12pub struct Devices;
13
14#[derive(Clone, Debug, PartialEq, Eq)]
15pub struct Device;
16
17pub struct Host;
18
19#[derive(Debug, Clone, PartialEq, Eq, Hash)]
20pub struct Stream;
21
22pub struct SupportedInputConfigs;
23pub struct SupportedOutputConfigs;
24
25impl Host {
26    #[allow(dead_code)]
27    pub fn new() -> Result<Self, crate::HostUnavailable> {
28        Ok(Host)
29    }
30}
31
32impl Devices {
33    pub fn new() -> Result<Self, DevicesError> {
34        Ok(Devices)
35    }
36}
37
38impl DeviceTrait for Device {
39    type SupportedInputConfigs = SupportedInputConfigs;
40    type SupportedOutputConfigs = SupportedOutputConfigs;
41    type Stream = Stream;
42
43    #[inline]
44    fn name(&self) -> Result<String, DeviceNameError> {
45        Ok("null".to_owned())
46    }
47
48    #[inline]
49    fn supported_input_configs(
50        &self,
51    ) -> Result<SupportedInputConfigs, SupportedStreamConfigsError> {
52        unimplemented!()
53    }
54
55    #[inline]
56    fn supported_output_configs(
57        &self,
58    ) -> Result<SupportedOutputConfigs, SupportedStreamConfigsError> {
59        unimplemented!()
60    }
61
62    #[inline]
63    fn default_input_config(&self) -> Result<SupportedStreamConfig, DefaultStreamConfigError> {
64        unimplemented!()
65    }
66
67    #[inline]
68    fn default_output_config(&self) -> Result<SupportedStreamConfig, DefaultStreamConfigError> {
69        unimplemented!()
70    }
71
72    fn build_input_stream_raw<D, E>(
73        &self,
74        _config: &StreamConfig,
75        _sample_format: SampleFormat,
76        _data_callback: D,
77        _error_callback: E,
78        _timeout: Option<Duration>,
79    ) -> Result<Self::Stream, BuildStreamError>
80    where
81        D: FnMut(&Data, &InputCallbackInfo) + Send + 'static,
82        E: FnMut(StreamError) + Send + 'static,
83    {
84        unimplemented!()
85    }
86
87    /// Create an output stream.
88    fn build_output_stream_raw<D, E>(
89        &self,
90        _config: &StreamConfig,
91        _sample_format: SampleFormat,
92        _data_callback: D,
93        _error_callback: E,
94        _timeout: Option<Duration>,
95    ) -> Result<Self::Stream, BuildStreamError>
96    where
97        D: FnMut(&mut Data, &OutputCallbackInfo) + Send + 'static,
98        E: FnMut(StreamError) + Send + 'static,
99    {
100        unimplemented!()
101    }
102}
103
104impl HostTrait for Host {
105    type Devices = Devices;
106    type Device = Device;
107
108    fn is_available() -> bool {
109        false
110    }
111
112    fn devices(&self) -> Result<Self::Devices, DevicesError> {
113        Devices::new()
114    }
115
116    fn default_input_device(&self) -> Option<Device> {
117        None
118    }
119
120    fn default_output_device(&self) -> Option<Device> {
121        None
122    }
123}
124
125impl StreamTrait for Stream {
126    fn play(&self) -> Result<(), PlayStreamError> {
127        unimplemented!()
128    }
129
130    fn pause(&self) -> Result<(), PauseStreamError> {
131        unimplemented!()
132    }
133}
134
135impl Iterator for Devices {
136    type Item = Device;
137
138    #[inline]
139    fn next(&mut self) -> Option<Device> {
140        None
141    }
142}
143
144impl Iterator for SupportedInputConfigs {
145    type Item = SupportedStreamConfigRange;
146
147    #[inline]
148    fn next(&mut self) -> Option<SupportedStreamConfigRange> {
149        None
150    }
151}
152
153impl Iterator for SupportedOutputConfigs {
154    type Item = SupportedStreamConfigRange;
155
156    #[inline]
157    fn next(&mut self) -> Option<SupportedStreamConfigRange> {
158        None
159    }
160}
cpal/host/null/mod.rs

cpal/host/null/
mod.rs
