gstreamer_pbutils/
audio_visualizer.rs

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1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use gst::prelude::*;
4
5use crate::{ffi, subclass::AudioVisualizerSetupToken, AudioVisualizer};
6
7pub trait AudioVisualizerExtManual: IsA<AudioVisualizer> + 'static {
8    // rustdoc-stripper-ignore-next
9    /// Returns the number of samples per frame required before calling the render method
10    fn req_spf(&self) -> u32 {
11        let sinkpad = self.as_ref().static_pad("sink").expect("sink pad presence");
12        let _stream_lock = sinkpad.stream_lock();
13
14        let ptr = self.as_ptr() as *mut ffi::GstAudioVisualizer;
15        unsafe { (*ptr).req_spf }
16    }
17
18    // rustdoc-stripper-ignore-next
19    /// Modify the request of samples per frame required to be present in buffer before calling
20    /// the render method
21    fn set_req_spf(&self, spf: u32, token: &AudioVisualizerSetupToken) {
22        assert_eq!(
23            self.as_ptr() as *mut ffi::GstAudioVisualizer,
24            token.0.as_ptr()
25        );
26
27        let sinkpad = self.as_ref().static_pad("sink").expect("sink pad presence");
28        let _stream_lock = sinkpad.stream_lock();
29
30        let ptr = self.as_ptr() as *mut ffi::GstAudioVisualizer;
31        unsafe {
32            (*ptr).req_spf = spf;
33        }
34    }
35
36    fn audio_info(&self) -> gst_audio::AudioInfo {
37        let sinkpad = self.as_ref().static_pad("sink").expect("sink pad presence");
38        let _stream_lock = sinkpad.stream_lock();
39
40        let ptr = self.as_ptr() as *mut ffi::GstAudioVisualizer;
41        unsafe {
42            let info = &(*ptr).ainfo;
43            glib::translate::from_glib_none(glib::translate::mut_override(
44                info as *const gst_audio::ffi::GstAudioInfo,
45            ))
46        }
47    }
48
49    fn video_info(&self) -> gst_video::VideoInfo {
50        let srcpad = self.as_ref().static_pad("src").expect("src pad presence");
51        let _stream_lock = srcpad.stream_lock();
52
53        let ptr = self.as_ptr() as *mut ffi::GstAudioVisualizer;
54        unsafe {
55            let info = &(*ptr).vinfo;
56            glib::translate::from_glib_none(glib::translate::mut_override(
57                info as *const gst_video::ffi::GstVideoInfo,
58            ))
59        }
60    }
61}
62
63impl<O: IsA<AudioVisualizer>> AudioVisualizerExtManual for O {}
gstreamer_pbutils/audio_visualizer.rs

gstreamer_pbutils/
audio_visualizer.rs
