scap 0.0.8

Modern, high-performance screen capture library for Rust. Cross-platform.
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

use std::sync::mpsc;

use super::Options;
use crate::frame::Frame;

#[cfg(target_os = "macos")]
pub mod mac;

#[cfg(target_os = "windows")]
mod win;

#[cfg(target_os = "linux")]
mod linux;

#[cfg(target_os = "macos")]
pub type ChannelItem = (
    screencapturekit::cm_sample_buffer::CMSampleBuffer,
    screencapturekit::sc_output_handler::SCStreamOutputType,
);
#[cfg(not(target_os = "macos"))]
pub type ChannelItem = Frame;

pub fn get_output_frame_size(options: &Options) -> [u32; 2] {
    #[cfg(target_os = "macos")]
    {
        mac::get_output_frame_size(options)
    }

    #[cfg(target_os = "windows")]
    {
        win::get_output_frame_size(options)
    }

    #[cfg(target_os = "linux")]
    {
        // TODO: How to calculate this on Linux?
        return [0, 0];
    }
}

pub struct Engine {
    options: Options,

    #[cfg(target_os = "macos")]
    mac: screencapturekit::sc_stream::SCStream,
    #[cfg(target_os = "macos")]
    error_flag: std::sync::Arc<std::sync::atomic::AtomicBool>,

    #[cfg(target_os = "windows")]
    win: win::WCStream,

    #[cfg(target_os = "linux")]
    linux: linux::LinuxCapturer,
}

impl Engine {
    pub fn new(options: &Options, tx: mpsc::Sender<ChannelItem>) -> Engine {
        #[cfg(target_os = "macos")]
        {
            let error_flag = std::sync::Arc::new(std::sync::atomic::AtomicBool::new(false));
            let mac = mac::create_capturer(options, tx, error_flag.clone());

            Engine {
                mac,
                error_flag,
                options: (*options).clone(),
            }
        }

        #[cfg(target_os = "windows")]
        {
            let win = win::create_capturer(&options, tx);
            return Engine {
                win,
                options: (*options).clone(),
            };
        }

        #[cfg(target_os = "linux")]
        {
            let linux = linux::create_capturer(&options, tx);
            return Engine {
                linux,
                options: (*options).clone(),
            };
        }
    }

    pub fn start(&mut self) {
        #[cfg(target_os = "macos")]
        {
            // self.mac.add_output(Capturer::new(tx));
            self.mac.start_capture().expect("Failed to start capture");
        }

        #[cfg(target_os = "windows")]
        {
            self.win.start_capture();
        }

        #[cfg(target_os = "linux")]
        {
            self.linux.start_capture();
        }
    }

    pub fn stop(&mut self) {
        #[cfg(target_os = "macos")]
        {
            self.mac.stop_capture().expect("Failed to stop capture");
        }

        #[cfg(target_os = "windows")]
        {
            self.win.stop_capture();
        }

        #[cfg(target_os = "linux")]
        {
            self.linux.stop_capture();
        }
    }

    pub fn get_output_frame_size(&mut self) -> [u32; 2] {
        get_output_frame_size(&self.options)
    }

    pub fn process_channel_item(&self, data: ChannelItem) -> Option<Frame> {
        #[cfg(target_os = "macos")]
        {
            mac::process_sample_buffer(data.0, data.1, self.options.output_type)
        }
        #[cfg(not(target_os = "macos"))]
        return Some(data);
    }
}